RAN14.0 Introduction
www.huawei.com
HUAWEI TECHNOLOGIES CO., LTD.
Content
1
RAN14.0 Features Overview
2
Huawei RAN14.0 Features in Details
HUAWEI
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HISILICON
SEMICONDUCTOR
Page 2
HSPA+
Capacity for hot Site
Experience
Smartphone
Performance
Security
Easy Network
RAN14.0 Key Values
Smart Phone
Experience
HSPA+
1, DC HSUPA (23Mbps).
Capacity for hot Site
1, NodeB Improvements：
• Signaling：1500 CNBAP/s;
• CEs: new WBBPf board 512CE;
• 2BBU per site: 48 cells.
1, Voice Service Experience Imp
rovement for Weak Reception
UEs;
2, PLVA improve AMR voice quality ;
3, Service-Based PS Handover from
UMTS to LTE;
4, CS Fallback Guarantee for LTE
Emergency Calls;
5, Fast CS Fallback Based on RIM.
Performance
1, Layered Paging in URA_PCH;
2, Control Channel Parallel Interference
Cancellation (Phase 2);
3, Dynamic Configuration of HSDPA CQI
Feedback Period;
4, Adaptive Adjustment of HSUPA Small
Target Retransmissions (Try);
5, Intelligent Access Class Control.
2, RNC Improvements：
• Support 40G、5300KBHCA;
• Max CNBAP Process of one Node
B: 1800 CNBAP/s;
3, Multi Sectors Solution.
Easy Network
1, Fault Management Enhancement ;
2, Iub Transmission Resource Pool in RNC;
3, Iu/Iur Transmission Resource Pool in RNC;
4, MOCN cell resource demarcation;
5, Micro NodeB Self-Planning;
6, Intelligent Battery Management;
7, One Tunnel (Enhanced);
8, Link aggregation (Enhaced).
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1, Dynamic Target ROT Adjustment;
2, Outer Loop Power Control
Enhancement;
3, Inter-Frequency Load Balance
Based on Configurable Load
Threshold;
4, Inter-frequency Load Handover
based CE Congestion;
5, CE Overbooking;
6, Load-based Uplink Target BLER
Configuration;
7, HSDPA Scheduling Based on UE
Location;
8, Adaptive Configuration of Typical
HSPA Rate;
9, Independent Demodulation of
Signals from Multiple RRUs in One
Cell.
Security
1, NodeB Integrated IPSec;
2, NodeB PKI Support.
Page 3
RAN14.0 Feature List
No. Feature ID
1
WRFD-140102
2
WRFD-020503
3
WRFD-140201
4
5
6
7
8
9
Feature Name
CS Fallback Guarantee for LTE
Emergency Calls
Outer Loop Power Control
Property Owner
Liyi
New
00133305
Liuqiang
Enh
00173017
Weiyuejun
New
00129478
AMR Voice Quality Improvement
Based on PLVA
WRFD-01061201 HSUPA UE Category Support
Enh
WRFD-140203
HSPA+ Uplink 23 Mbit/s per User
New
WRFD-140204
DC-HSUPA
New
Control Channel Parallel Interference
WRFD-140202
New
Cancellation (Phase 2)
Voice Service Experience
WRFD-140205
New
Improvement for Weak Reception UEs
WRFD-140206
10 WRFD-140207
11 WRFD-140208
Layered Paging in URA_PCH
New
Iu/Iur Transmission Resource Pool in
New
RNC
Iub Transmission Resource Pool in
New
RNC
12 WRFD-140209
NodeB Integrated IPSec
New
13 WRFD-140210
NodeB PKI Support
New
14 WRFD-020103
Inter Frequency Load Balance
Multi Frequency Band Networking
Management
Enh
Enhanced Multiband Management
Enh
15 WRFD-020110
16 WRFD-020160
17 WRFD-140211
Dynamic Target ROT Adjustment
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Enh
New
Liuqi 51062
DC HSUPA
Panyongchao
51088
Jiaweijie
00178255
Yuyang
62071
Guochengxu
00151766
Guochengxu
00151767
Zhangling
00160446
Chenjiajia
00149149
Wuxianbin
00126768
“Interfrequency
Load Handover
based CE
Congestion”
Daidingzhang
60522
No.
Feature ID
Feature Name
18
WRFD-140212 CE Overbooking
New
19
WRFD-140213 Intelligent Access Class Control
New
20
WRFD-140218
21
WRFD-140219 Micro NodeB Self-Planning
New
22
WRFD-140220 Intelligent Battery Management
New
23
WRFD-030004
24
WRFD-140215
25
WRFD-140216
26
WRFD-140217
27
WRFD-140221
28
WRFD-140222
29
MRFD-210304 Fault Management
30
WRFD-021350
31
WRFD-020111 One Tunnel
Enh
32
MRFD-210103 Link aggregation
Enh
33
WRFD-140223 MOCN Cell Resource Demarcation
New
34
WRFD-140224 Fast CS Fallback Based on RIM
New
Service-Based PS Handover from
UMTS to LTE
Adaptive Configuration of Typical
HSPA Rate
Dynamic Configuration of HSDPA
CQI Feedback Period
Load-based Uplink Target BLER
Configuration
Inter-Frequency Load Balance Based
on Configurable Load Threshold
HSDPA Scheduling Based on UE
Location
Adaptive Adjustment of HSUPA
Small Target Retransmissions (Trial)
Property Owner
New
New
New
New
New
New
New
Enh
Independent Demodulation of Signals
Enh
from Multiple RRUs in One Cell
Page 4
Wanghaidan
00136487
Liulin
62462
Liyi
00133305
Qiyan
00140461
Jiangwei
00150661
Yangqi
00143105
Wangxiaoxia
00151683
Wangxiaoxia
00151683
Fenghuamin
51298
Sunyafei
53745
Zhengxiang
00126531
Houyue
120480
Jinyu
00114921
Liyi
00133305
Zhujiajun
50243
Xubing
00141968
Xukai
00136474
Capacity for hot Site
HSPA+
Experience
Smartphone
Capacity for hot Site
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Performance
Security
Easy Network
Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
Easy Network
RNC Ability Enhancement
…TGbps
 Iub/Iu interface board pool
 Optimized software efficiency
 40 Gbps Iub throughput
 5300KBHCA (without SMS)
New switching board-SCUb
 Max CNBAP Process of one
NodeB: 1800 CNBAP/s
BSC6900
 Enhancement in user plane and
control plane
RAN14
 Up to 24Gbps Iub throughput
Service Awareness board
BSC6900
Enhancement in user plane.
 PS Throughput: 12Gbps

New Processor Tech.
 PS Throughput: 8Gbps

RAN13
BSC6900
RAN12
BSC6900
RAN11.1
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1.
2.
3.
All IP based PARC Platform
Same platform for multimode
More powerful MBB processing capacity
Page 6
Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
New BBU Boards Increase Capacity
Huge signaling capacity
UMPT（Universal Main Processing & Transmission
Board ）
Hardware ready for IPv6
Support IPsec
UTRPc（Universal Transmission Processing Board ）
The signaling capacity of BBU3900
CNBAP/S
WBBPf (WCDMA Baseband Processing Unit)
Higher CE: 512/768 CE for UL/DL
6 MIMO Cells per board, better evolution for HSPA+
One board can be shared by 2 UL recourse groups, better
efficiency when expansion
1600
1400
1200
1000
800
600
400
200
0
RAN12.0
RAN13.0
RAN14.0
BBU3900 with new daughter boards provides 6X signaling capacity
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Easy Network
Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
BBU Configuration for High Capacity
WBBPf
WBBPf
WBBPf
WBBPf
WBBPf
UTRPc
WBBPf
WMPT
WBBPf
WBBPf
Scenario 2: insert new board UMPT and 6 WBBPf boards for new sites;
WBBPf
WBBPf
Scenario 3: Replace the old board WMPT by new board UMPT and insert 6 WBBPf boards;
WBBPf
UMPT
WBBPf
WBBPf
WBBPf
WBBPf
UCIU
WBBPf
WBBPf
WBBPf
WBBPf
WBBPf
WBBPf
WBBPf
One BBU to support 1500CNBAP/s, 3072/4608 CEs for UL/DL and maximum 24 cells:
Scenario 1: Based on WMPT, insert a new board UTRPC and 6 WBBPf boards;
One BBU to support 1500CNBAP/s, 3072/4608 CEs for UL/DL and maximum 24 cells:
WBBPf
Two BBU connection of one site to support 1500CNBAP/s, 5632 / 8448 CEs for UL/DL
and maximum 48 cells :
Scenario 4: insert new board UMPT and 11 WBBPf boards for very hot site;
Notify: the old baseband processing board can be used in the capacity expansion in suburban or rural.
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WMPT
UMPT
Easy Network
Multi-Sectors
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Multi-Sectors Background
 Why Multi-Sectors solution is needed?
 As smart phone users are boosted rapidly, the higher UU capacity is required,
power and code resource is not enough for high traffic;
 The Multi carriers should be used to improve the UU capacity, but frequency
resource is usually limited;
 The new sites could be established to improve the UU capacity, but new sites
acquisition is usually difficult;
The Multi-Sectors solution is a suitable way for capacity expansion.
3 Sectors
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6 Sectors
Page 10
Multi-Sectors Solution
3-sectors site solution
S 1/1/1
Multi-Sectors site solution (an example for DBS3900)
Antenna
RRU
BBU


DBS3800 is not suggested for the 6-sector
solution.
DBS3900 and BTS3900/A are suggested for
the 6-sector solution:
Traditional antennas should be replaced by
split antennas to reduce the interference of
inter cell overlap;
The additional 3 RF modules should be added;
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2G+3G Coexist Solution for Multi Sectors
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Combiner
Splitter
Page 12
3G RRU

Antennas
3G RRU

There is split antennas for 900MHz;
 Use splitter and combiner to share
split antennas by 2G and 3G.
There is split antennas for
1800+2100MHz;
 Use splitter and combiner to share
split antennas by 2G and 3G.
Note: For 2G the splitter reduces the
transmitted power 3dB, the split
antennas with higher gain will
complement power loss, which has no
impact on 2G performance.
2G RRU

Multi-Sectors Solution: Benefit
Coverage comparison in DU(dense urban) and U(urban) simulation scenarios
RSCP Comparison of 3-sector vs. 6-sector
100
90
80
70
60
50
40
30
20
10
0
-120
DU
EcIo Comparison of 3-sector vs. 6-sector
CDF (%)
3-sector
General 6-sector
Split 6-sector
-40
U
-50
-60
-70
-80
-90
RSCP (dBm)
-100
-110
RSCP Comparison of 3-sector vs. 6-sector
3-sector
Split 6-sector
General 6-sector
-8
U
-10
-12
-14
EcIo (dB)
-16
-18
-20
EcIo Comparison of 3-sector vs. 6-sector
网络容量提升约19%~49%
-40
-50
-60
-70
-80
-90
RSCP (dBm)
-100
-110
Average RSCP of general and split 6-sectors have
2~3dB improvement compared with 3-sectors;
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100
90
80
70
60
50
40
30
20
10
0
CDF (%)
CDF (%)
3-sector
General 6-sector
Split 6-sector
100
90
80
70
60
50
40
30
20
10
0
-120
100
90
80
70
60
50
40
30
20
10
0
CDF (%)
DU
3-sector
Split 6-sector
General 6-sector
-8
-10
-12
-14
EcIo (dB)
-16
-18
-20
Average Ec/Io of general 6-sectors and split 6sectors have 1.4dB and 0.8dB worse than 3-sectors
in DU respectively;
Page 13
Multi-Sectors Site Solution: Benefit
Capacity comparison in DU(dense urban) and U(urban) simulation scenarios
General 6-sectors vs 3 sectors gain (DU) : 26%
Split 6-sectors vs 3 sectors gain (DU) : 52%
General 6-sectors vs 3 sectors gain (U) : 43%
Split 6-sectors vs 3 sectors gain (U) : 70%
Split 6-sectors has better capacity improvement than general 6-sectors
because of less inter-cell interference
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Page 14
Multi-Sectors deployment
Start
Statistics
analysis
MR analysis
Network
Evaluation
Antenna &feeder
para
Neighbor Cell and
SC
Network
Planning
Location Area
Cell Para
RNC Extension
Civil Works
DC/MIMO/..
Muti-Carrier
Solution
Selection
Antenna &feeder
installation
Site
Engineering
BTS modules
installation
Split BTS
Muti-Sector
Site
Selection
Antenna &feeder
survey
Site
Launching
Configuration Data
Preparation
Launching
Verification
Site
survey
Engineering
Optimization
RNC
NodeB
Network
Design
Network
Optimization
Traffic Balance
RF and Parameter
Optimization
End
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
HSPA+:
1,RAN12.0 Uplink 16QAM
2,RAN12.0 Uplink Layer2 Improvement
3,RAN13.0 DC-HSDPA+MIMO
4,RAN13.0 E-DPCCH Boosting
5,RAN14.0 DC HSUPA
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Security
Easy Network
Uplink 16QAM (RAN12)
UL Modulation Schemes
RAN11.0: QPSK
2bits/symbol
RAN12.0: UL 16QAM
4bits/symbol
UL Rate >
4Mbps
Scheduling Method: The scheduler determines to use 16QAM or QPSK according to uplink
interference and service rate requirement (~4Mbps)
Page 17
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Uplink 16QAM (RAN12)
16QAM can get gain when RoT is higher than 6dB
wrap-around Micro, PA3, 16 Users
100%
*Note: In RAN 12.0, UL peak rate can not be up to theoretical
value(11.5Mbps), RAN13.0 available.
Source: Huawei simu。
UE
NodeB HW
RNC HW
SW License
Other Feature
CN
Time
√ Cat 7
√EULPd or EBBCd
or WBBPd or
WBBPf
–
√ in Node B
Per cell
√ HSUPA Intro.
Pack
–
Sys. 10Q1
UE 12Q1
NOTE: –: not involved
√: involved
Benefit
Raise the user peak rate and cell throughput up to 35%
Obtain higher performance in Micro cell and indoor area than in Macro cell
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Uplink Layer2 Improvement (RAN12)
Fixed RLC
PDU size
336bit
656bit
Flexible RLC
PDU size
L2 Enhancement:
Support flexible PDU size
PDU size vs Transmission Efficiency
UE
NodeB HW
RNC HW
SW License
Other Feature
CN
Time
√
√ WBBPb or
WBBPd or WBBPf
–
√ Node B
Per cell
√ HSUPA Intro.
Pack.
–
Sys. 10Q1
UE 12Q1
NOTE: –: not involved
√: involved
Benefit
Support UL to reach higher data throughput
Improve UL throughput in the edge of cell
Improve transmission efficiency on the Iub and Uu interfaces
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DC-HSDPA+MIMO (RAN13)
Higher DL peak rate and enhanced user experience
Data stream 1
64QAM
MIMO
Data stream 2
DC + MIMO
Carrier frequency 2
Carrier frequency 1
Data stream 1
DC
Data stream 2
Flexible Combination
Benefit:
DC-MIMO Performance Gain Comparison (Bursty Traffic)
16
• 27% to 50% higher average users’ throughput
compared to DC-HSDPA
• MIMO can be configured on both carriers or one
of the dual carriers to smooth the network
evolution.
User's Average Data Rate(Mbps)
• DL peak data rate reaches 84Mbps
DC-HSDPA+MIMO+64QAM
14
DC-HSDPA+64QAM
12
10
8
6
4
2
0
0
2
4
6
8
10
12
User Number/sector
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14
16
18
E-DPCCH Boosting (RAN13)
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
E-DCH
UE(Cat8,9)
E-DCH
F2
F1
Adjacent Carrier
DC-HSUPA Introduction
NodeB
DC HSUPA
•
Introduction
›
›
›
›
•
DC-HSUPA allows UE transmit uplink data with E-DCH on two adjacent carriers.
DC-HSUPA is able to combine with 16QAM for reaching 23mbps peak rate.
DC-HSUPA need new UE which category is cat8~cat9.
DC-HSUPA will be used for streaming, BE traffic.
Channel
›
›
›
›
DC-HSUPA need two independent close loop power control on two carrier.
For the downlink, F-DPCH channel must be used, so SRB over HSPA is required.
Regarding E-DCH schedule, DC-HSUPA UE will receive AG/RG schedule on each carrier.
Also, UE will report Happy Bit and Schedule Information(SI) on each carrier.
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Easy Network
Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
Easy Network
DC-HSUPA introduce (Cont.)
•
DC-HSUPA scheduling
›
›
NodeB supports DC-HSUPA jointed scheduling on two carrier;
DC-HSUPA scheduling will consider the uplink load of two carrier, and allocates serving
grant on each carrier for the better efficiency usage of the uplink load;
› One DC HSUPA user will be scheduled fair with SC HSUPA users in one carrier;
› The remain resource in another carrier could be used by the DC HSUPA user for higher
throughput;
›
•
In order to achieve scheduling fairness , DC-HSUPA UE will consider the sum of two
carrier ‘s throughput in scheduling , while SC-HSUPA UE uses throughput on single
carrier.
DC –HSUPA Mobility
›
›
There are two E-DCH active sets, one active set for one carrier.
Base on primary carrier measurement, RNC add/remove/reconfigure the E-DCH RL in
active sets.
› If all the E-DCH RLs in active set support DC HSUPA, the user keeps DC HSUPA in mobility by
soft/softer handover;
› If any E-DCH RL in active set doesn’t support DC-HSUPA, the user will fall back from DC
HSUPA to SC HSUPA first, and the mobility management will be based on SC-HSUPA.
›
At the edge of coverage, DC-HSUPA will fall back to SC-HSUPA/DCH for ensuring
service.
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
DC-HSUPA Benefits
•
Throughput
DC-HSUPA UE will be more easier to get
higher throughput than normal HSUPA UE.
» DC-HSUPA will significantly improve UE
uplink throughput by two carriers resource
available.
» DC-HSUPA with UL16QAM will get 23Mbps
peak rate.
» Without UL 16QAM,DC-HSUPA will provide
11.5Mbps peak rate.
» The peak data rate is dependent on RoT and
propagation quality. Based on simulation, DC
HSUPA can achieve about 10Mbps with 6dB
RoT and PA channel.
›
•
•
•
DC-HSUPA will not improve cell throughput
in high loading , because it’s equivalent to
two SC HSUPA in this scenario.
Gain
UE Burst throughput gain (%)
›
Traffic define: Burst ; size: mean 125KByte; interval: mean
5s
DC-HSUPA user achieves higher throughput gain in lower uplink load.
DC-HSUPA user throughput gain decreases when uplink load increasing.
DC-HSUPA will not increase the uplink coverage.
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Easy Network
DC-HSUPA Benefits
•
Throughput
DC-HSUPA UE will be more easier to get
higher throughput than normal HSUPA UE.
» DC-HSUPA will significantly improve UE
uplink throughput by two carriers resource
available;
›
›
•
•
•
DC-HSUPA will not improve cell throughput
in high loading , because it’s equivalent to
two SC HSUPA in this scenario.
The peak data rate is dependent on RoT and
propagation quality. Based on simulation,
DC HSUPA can achieve about 10Mbps with
6dB RoT and PA channel.
Gain
UE Burst throughput gain (%)
›
Traffic define: Burst ; size: mean 125KByte; interval: mean
5s
DC-HSUPA user achieves higher throughput gain in lower uplink load;
DC-HSUPA user throughput gain decreases when uplink load increasing,
DC-HSUPA will not increase the uplink coverage.
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
Easy Network
DC-HSUPA Activation
•
DC-HSUPA depends on following features
›
›
›
›
›
›
›
•
Hardware dependants
›
›
›
›
•
WRFD-010614 HSUPA Phase 2
WRFD-010695 UL Layer 2 Improvement
WRFD-010652 SRB over HSDPA
WRFD-010636 SRB over HSUPA
WRFD-010696 DC-HSDPA
WRFD-010638 Dynamic CE Resource Management
Additional UL 23Mbps feature license is need for reaching 23mbps peak rate
NodeB BTS3900/DBS3900 will support this feature. WBBP(d/f) board is needed;
DBS3800,BTS3812E need EBBC(d),EDLP+EULP(d) board;
RNC shall configured with DPUb/e board;
New Category UE (Cat8 -> 11.5Mbps, Cat9 ->23Mbps).
Activation
›
Pre-request
» Iub transport network uplink bandwidth higher than 25Mbps;
» Core network support 23Mbps subscriber data rate.
›
Configuration
»
»
»
»
Configure DC-HSDPA : ADD DUALCELLGRP cell1,cell2;
Configure DC-HSUPA : ADD ULDUALCELLGRP cell1,cell2;
Set SRB bearer : SET UFRCCHLTYPEPARA SrbChlType=HSPA;
Open cell DC-HSUPA capability: SET UCELLALGOSWITCH HspaPlusSwitch
DC_HSUPA;
» Set traffic bearer: SET UCORRMALGOSWITCH CfgSwtich CFG_HSUPA_DC_SWITCH.
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
Experience
1, Voice Service Experience Improvement for
Weak Reception UEs;
2, PLVA improve AMR voice quality ;
3, Service-Based PS Handover from UMTS to LTE;
4, CS Fallback Guarantee for LTE Emergency Calls;
5, Fast CS Fallback Based on RIM.
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Easy Network
Voice Service Experience Improvement for Weak
Reception UEs
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Voice Service Experience Improvement for Weak Reception UEs: background
iPhones have higher AmrCallDropRatio than other smartphones.
iPhone user experience guarantee is so important to operators.
AMR Call drop times
DATA FROM OPERATOR IN CHINA
18
16
14
12
10
8
6
4
2
0
■ WCDMA only，long call duration
■ WCDMA/GSM，long call duration
■ WCDMA/GSM，short call duration
Why iPhone call drop more frequent:
As we know， iPhone3GS and iPhone4 have weak receiver sensitivity compared with other
smartphones, especially when making an AMR call with hand holding the iPhone4.
Huawei give an iPhone differentiation solution to help operators
guarantee the iPhone users’s AMR call experience.
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Voice Service Experience Improvement for Weak Reception UEs: Solution

Improve the downlink max power of AMR:
Identify Smartphone* by IMEI TAC when an
AMR call request occurs;
 Improve the downlink max power of AMR call
to compensate weak receiver sensitivity .

3G
Normal DL max power
Other smartphone
Higher DL max power
3G
NodeB
Smartphone*

Reduce Ping-Pong of compress mode:
Identify Smartphone* by IMEI TAC when an
AMR call request occurs;
 Assign different 2D/2F parameters with other
Smartphones, which reduces Ping-Pong of
compress mode，decreases the call drop.

Note：Smartphone* means some types of smart phones have weak receiver sensitivity, such as iphone3GS and iphone4.
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Voice Service Experience Improvement for Weak Reception UEs: Benefits
Before solution implemented
AmrCall
DropRat
io
total
2.47%
iPhone
3.02%
other
2.31%
solution implemented, Amr calldrop
reduce 15%,by estimate
2.56%
Example: one network statistics in May 2011
Higher downlink max power may reduce cell capacity.
For example, in extreme situation we assumpt below:
• 30: AMR call user number at the same time in one cell;
• 30% : iPhone penetration rate;
• 20%: distribution rate at cell edge, cell use higher downlink power;
• 20W:cell max total power.
We can calculate that 30*30%*20%=2 users are making AMR call at cell edge, and the cell uses higher DL max power
we configured. DL max power adds 3db(33dbm to 36dbm,2W) for one iPhone user. The 2 AMR cell edge users
consume more 4W power in DL, which occupy 20% of total DL power(4W/20W=20%). Correspondingly cell capacity
reduces by 20% in estimation.
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Voice Service Experience Improvement for Weak Reception UEs: Activation
This solution should be deployed when:
 iPhone penetration rate>10%
 iPhone call drop rate> average call drop rate
Preparation before deployment:
 Obtain the iPhone IMEI TAC information and license for this solution
Check whether 3G coverage better than 2G obviously，or not, and Deployment step 2 are different according to the check result.
Deployment step:
1, enable IMEI obtain function :
SET URRCTRLSWITCH: PROCESSSWITCH2=RNC_CS_QUERY_UE_IMEI_SWITCH-1
2, ADD iPhone TAC and enable differentiation solution:
(All the parameter values below are only for reference use,the actual value rely on operators live network environment.)
 if WCDMA coverage better than GSM obviously, enable both DL MAX power and handover parameters
ADD UIMEITAC: TAC_FUNC=Special_User_Enhance, TAC=XXXX, Description="iPhone",
SpecUserFunctionSwitch=SPECUSER_AMR_HOENHANCE_SWITCH-1&SPECUSER_AMR_PWRENHANCE_SWITCH-1;
ADD UCELLLDM:
CellId=XX, SpecUserPwrEnDlPwrTrigThd =85;
MOD UCELLRLPWR:
CellId=XX, CNDomainId=CS_DOMAIN, MaxBitRate=12200, RlMaxDlPwr=0, SpecUserRlMaxDlPwr =30;
SET UHOCOMM:
SpecUserHystFor2D=6, SpecUserCSThd2DEcN0=-13, SpecUserCSThd2FEcN0=-10, SpecUserCSThd2DRSCP=-93, SpecUserCSThd2FRSCP=-90 ;
no GSM or GSM coverage is weak,only DL MAX power parameters enabled
ADD UIMEITAC: TAC_FUNC=Special_User_Enhance, TAC=XXXX, Description="iPhone",
SpecUserFunctionSwitch=SPECUSER_AMR_HOENHANCE_SWITCH-0&SPECUSER_AMR_PWRENHANCE_SWITCH-1;
ADD UCELLLDM:
CellId=XX, SpecUserPwrEnDlPwrTrigThd =85;
MOD UCELLRLPWR:
CellId=XX, CNDomainId=CS_DOMAIN, MaxBitRate=12200, RlMaxDlPwr=0, SpecUserRlMaxDlPwr =30;
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AMR Voice Quality Improvement Based on PLVA
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AMR Voice Quality Improvement Based on PLVA: Background
•
In UMTS, Convolutional Codes(CC) are used to perform channel coding and a power control mechanism
is used to ensure voice quality.
UE
Node B
Uu
RNC
Iub
CN
Iu
AMR Speech
Codec
AMR Speech
Codec
Decoded data
CC Encoder
CC Decoder
CRCI
Power
Transmitter
Inner-Loop
Outer-Loop
Power
Control
Power
Control
Power
Target
Commander
SIR
Measured
SIR
•
•
Uplink
But in some weak coverage areas, the voice quality can not be ensured due to UE power limitation, fast
channel change, or strong interference
Huawei uses an enhanced Viterbi algorithm named PLVA to decode the Convolutional Codes to make
the voice service more robust, especially in poor radio condition
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AMR Voice Quality Improvement Based on PLVA: Solution
Viterbi Decoding
PLVA Decoding
1st path
Vitebi
decoding
(produces the
optimal path)
Data in
•
Viterbi CRCI
Optimal path
CRC
Data in
Viterbi decoded bits
Viterbi algorithm:
›
The Viterbi algorithm selects the
optimal path based on the
maximum likelihood theory.
•
2nd path
Viterbi CRCI
CRC &
Choose
PLVA CRCI
PLVA decoded bits
Nth path
PLVA in RAN14.0
›
›
›
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Vitebi
decoding
(produces Noptimal paths)
the PLVA selects the top N optimal paths and
performs CRC on the data decoded on these
paths.
The PLVA outperforms the Viterbi algorithm:
When Viterbi CRCI is correct, the PLVA CRCI is
always correct; but when PLVA CRCI is correct,
the Viterbi CRCI is not necessarily correct.
Only the uplink voice improved, the downlink voice
improvement requires UE to implement it.
Page 35
AMR Voice Quality Improvement Based on PLVA: Benefits
•
Scenario:
›
•
Usually the uplink coverage is limited, the feature is beneficial for weak coverage with low
AMR experience, such as high BLER and low MoS.
Benefit:
›
The feature is effective for both AMR-NB and AMR-WB. For AMR-NB the MOS improvement
is about 0.1~0.3.
MOS comparison for narrow band AMR voice in UL
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MOS comparison for wide band AMR voice in UL
Page 36
AMR Voice Quality Improvement Based on PLVA:Activation

Dependency

Hardware Dependency





The BTS3812E, BTS3812A, and BTS3812AE must be configured with the EULPd board.
The BBU3806 must be configured with the EBBCd board.
The BBU3900 must be configured with the WBBPd or WBBPf board.
The BTS3902E supports this feature
Software Dependency
Introduced in RAN14



UE Dependency：NA
Feature Dependency：NA
License Dependency
License of optional feature WRFD-140201 AMR Voice Quality Improvement Based on PLVA.

Activation
›
This feature can be enabled by activating the AMR Voice Quality Improvement Based on PLVA
license.
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Service-based PS handover from UMTS to LTE
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Service-based PS handover from UMTS to LTE：
Background
•
In the overlap area of UMTS and LTE, if
the UE starts a PS call in UMTS
network and the LTE coverage is good,
then handover the PS service to LTE.
LTE
Coverage
LTE
Coverage
PS HO from U to L
based on service
UMTS Coverage
•
If a UE starts PS call in LTE and then
add a voice call, the eNodeB will
trigger UE CSFB to UMTS. When voice
call is terminated, if the PS call is still
on-going, do "PS HO" for the on-going
PS call to LTE .
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LTE
Coverage
LTE
Coverage
CSFB for CS+PS
UMTS Coverage
Page 39
Switch back for PS
Service-based PS handover from UMTS to LTE: Solution
•
When a UE has the action on RAB setup, RAB modification, RAB release or PS
service rate changed or the UE state transferred to cell DCH, RNC decide whether
the UE should be handover to LTE.
Start
RAB setup, modification, release or PS service rate
changed or the UE state transferred to cell DCH
If the UE supports
LTE measurement ?
No
Yes
All the remaining RAB are PS RAB and all
the PS RAB are allowed to LTE?
No
Yes
No
If the signal quality of the target
LTE cell good enough?
Yes
If the UE supports PS
HO to LTE?
Yes
Handover the UE to target LTE cell
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No
No
If the UE supports PS
redirect to LTE?
Yes
redirect the UE to target LTE cell
Page 40
Service-based PS handover from UMTS to LTE: Benefit
• Benefits:
› Improved user experience for PS services.
› Reduced service interruption time compared with redirection.
› Reduced UMTS traffic load and increased LTE network utilization.
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Service-based PS handover from UMTS to LTE: Activation
•
Activation method
step 1:RNC updates to RAN14;
step 2:License of service-based PS handover from UMTS to LTE is activated;
step 3: Turn on the switch：
SET UCORRMALGOSWITCH: HoSwitch=HO_LTE_PS_OUT_SWITCH-1&HO_LTE_SERVICE_PS_OUT_SWITCH-1;.
step 4: Set the basic information for LTE cell:
ADD ULTECELL: LTECellIndex=1, LTECellName="LTE CELL1", EUTRANCELLID=100, MCC="460", MNC="01", TAC=10, CnOpGrpIndex=1,
CellPHYID=100, LTEBand=10, LTEArfcn=500, SuppPSHOFlag=Support;
Note: for PS handover from UMTS to LTE, SuppPSHOFlag must be set as “support”.
step 5: Set the neighboring LTE cell to a UMTS cell :
ADD ULTENCELL: RNCId=1, CellId=2, LTECellIndex=1;
step 6: Set measurement algorithm parameters for non-coverage-based UMTS-LTE handovers:
RNC-oriented:
SET UU2LTEHONCOV: LTEMeasTypOf3C=MeasurementQuantity, U2LTEFilterCoef=D6, U2LTEMeasTime=30, LTEMeasQuanOf3C=RSRP,
Hystfor3C=2, TrigTime3C=D10, TargetRatThdRSRP=20, TargetRatThdRSRQ=30;
Cell-oriented:
ADD UCELLU2LTEHONCOV: CellId=1, LTEMeasTypOf3C=MeasurementQuantity, U2LTEFilterCoef=D6, U2LTEMeasTime=30,
LTEMeasQuanOf3C=RSRP, Hystfor3C=2, TrigTime3C=D10, TargetRatThdRSRP=20, TargetRatThdRSRQ=30;
step 7: Set the service handover parameter:
ADD UTYPRABBASIC: EUTRANSHIND=HO_TO_EUTRAN_SHOULD_BE_PERFORM.
•
Deactivation method
step 1: set the handover flag for LTE cell:
MOD ULTECELL: SuppPSHOFlag=NotSupport.
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CSFB guarantee for LTE emergency
call
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CS Fallback Guarantee for LTE Emergency Calls:
Background
•
Disadvantage of LTE Emergency Calls based on traditional CSFB from LTE
to UMTS
›
When the LTE does not support VoIP, the voice call need fallback to UMTS network.
›
If a UE initiates an emergency call in idle mode on the LTE network, the UE must transit
to connected mode and establish a default PS bearer in the LTE network.
›
The eNodeB decides whether the UE should be handover or redirect to UMTS.
» For redirect mode: eNodeB release the UE, and the UE automatically initiate to access the
UMTS network with emergency call; the disadvantage is long delay and not controlled by
network.
» For handover mode: eNodeB inform RNC the handover is triggered by the LTE emergency call
CSFB, RNC will admit this PS service as normal priority, if the admission of the PS service is
successful, the UE will initiate a emergency call in UMTS, otherwise, the handover is failed.
•
Purpose of Huawei CSFB guarantee for LTE emergency calls
›
The emergency call can be set up successfully only after the PS bearer is admitted to
the UMTS network. In order to ensure the emergency call setup successfully, we must
ensure the PS bearer admission to the UMTS.
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CS Fallback Guarantee for LTE Emergency Calls: Solution
• In order to ensure the emergency call
setup successfully, we must ensure the
PS bearer admission to the UMTS:
•
•
CSFB
RNC received is a CSFB information IE in the Source
RNC to Target RNC Transparent Container IE, If the
value of CSFB information IE is ‘CS High Priority’, the PS
handover is due to CSFB of LTE emergency call.
CSFB information IE
(CS High Priority)
If the PS service is BE service:
•
•
•
eNB
RNC
The admission data rate is decreased to 8kbps in
order to improve the admission successful ratio.
If the PS service admission is failure, RNC will
preempt resources of other users from the lowest
priority, and guarantee the admission of PS service
triggered by emergency call.
If the PS service is not BE service:
•
•
The PS service is admitted with required data rate.
If the PS service admission is failure, RNC will
preempt resources of other users from the lowest
priority, and guarantee the admission of PS service
triggered by emergency call.
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•
Guarantee the
admission of the PS
Benefits：
•
Page 45
Guarantee the call success ratio of LTE
emergency call.
CS Fallback Guarantee for LTE Emergency Calls: Activation
• Activation method
This feature is a basic feature. There is no license for this feature.
step 1: RNC updates to RAN14
Step 2: Switch on：SET UCORRMALGOSWITCH: HoSwitch=HO_UMTS_TO_LTE_FAST_RETURN_SWITCH-1;
• Deactivation method
Switch off：SET UCORRMALGOSWITCH: HoSwitch=HO_UMTS_TO_LTE_FAST_RETURN_SWITCH-0;
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Fast CS Fallback Based on RIM
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Fast CSFB Based on RIM: background
Network architecture for
CSFB
Normal CSFB

Normal CSFB based on redirection in R8 version, eNodeB just sends RRC_CONN_REL message with
frequency of UMTS cells, not including target cells ID(PSC) and other information. after redirect to UMTS,
UE should search available cell and read the system information blocks first, then it can initial the service
request. This process cost much time and effect on the voice service experience of access delay.
Fast CSFB

CSFB With SIB（enhanced CSFB based on redirection) is used to reduce the access delay for CS
Fallback .
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Page 48
Fast CSFB Based on RIM: solution
•
Step1： get the system information of UMTS cells based on RIM

Initial process:
»
when configure interRAT neighbor cells or restart the eNodeB in LTE, eNodeB will initials the RIM request process to get the
SIBs of the UMTS neighbor cells.
»

after receiving the RIM Request, RNC sends the system information block of required cells to the LTE cell.
Update process:
»
When the system information context is changed(except UL interference in SIB7), RNC will send the updated system
information block to the correlative LTE cells.
•
Step2：redirection

When UE initial a voice call in LTE, eNodeB triggers CS Fallback to UTRAN with sending RRC_CONN_REL message which contains
the system information blocks of the target redirection cell.
•
Step3： service initial

Because UE can get the system information block in the RRC_CONN_REL message, UE can initial the service request directly in
UTRAN, avoid reading system information block to decrease the access delay.
Figure 1: overview of the feature
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Figure 2: RIM initial process
Figure 3: RIM Update
Page 49
Fast CSFB Based on RIM: Benefits
Benefits:

No need to read the MIB/SB/SIB after redirect to UMTS cells before launch the
RRC_CONN_REQ based on the feature.

Max benefit for access delay is 1.28 seconds compared with Normal CSFB(R8).
Improved 1280ms
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Page 50
Fast CSFB Based on RIM: Activation
• Dependency：
•
•
Dependency on the UE
The UE should be complied to Release 9 and support CSFB with SIB.
Dependency on the CN
The mobility management entity (MME) and serving GPRS support node (SGSN) must support the RIM
procedure of Release 8.
The CN earlier than Release 8 must support conversion of eNodeB ID.
• Activation method
step 1: Active the RIM Request in LTE
MOD ENODEBALGOSWITCH: RimSwitch: UTRAN_RIM_SWITCH-1;
step 2: Add license in UMTS
SET LICENSE: FUNCTIONSWITCH6 FastCSFallbackBasedonRIM-1;
Step 3: Active the RIM feature in UMTS
SET URRCTRLSWITCH: PROCESSSWITCH: FastCSFBonRIM-1 ;
Step 4: Active the correlative feature in LTE (Flash CSFB to UTRAN)



Add license：CS Fall Back to UTRAN and Flash CS Fallback to UTRAN;
MOD ENODEBALGOSWITCH：HoModeSwitch： UtranRedirectSwitch-1;
MOD ENODEBALGOSWITCH ：HoAlgoSwitch： UtranCsfbSwitch-1.
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
Easy Network
Smartphone
1, Layered Paging in URA_PCH;
2, Control Channel Parallel Interference Cancellation Phase 2;
3, Dynamic Configuration of HSDPA CQI Feedback Period;
4, Adaptive Adjustment of HSUPA Small Target Retransmissions
(Try);
5, Intelligent Access Class Control.
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URA PCH Layered Paging
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URA PCH Layered Paging: Background
The Problem of traditional URA PCH
1. URA PCH is a choice to save signaling in cell
reselection compared with Cell PCH;
2. But URA PCH has to be paged in all URA
area, which usually leads to page channel
congested.
3. URA area planning based on Traffic map
analysis is complex to avoid paging
congestion.
user
URA
PCH
Traditional URA PCH
Layered Paging in URA_PCH:
user
URA
PCH
1. Layer1: the paging is first sent to the latest
cell and neighbor cells of UE;
2. Layer2: if the paging is failure, the UE is
paged again in whole URA area.
Layered Paging in
URA_PCH
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URA PCH Layered Paging: Solution
1. RNC remember cell ID where UE last
stayed;
2. When RNC needs paging the UE;
3. RNC will paging the UE only in the
area where the last cell and neighbor
cells of the last cell;
user
URA
PCH
Layer1: Paging in cell level
4. If UE has not response to the paging,
RNC will paging the UE in whole URA
area.
user
URA
PCH
URA PCH Layered Paging can be set
for RT/NRT service independently.
Layer2: Paging in URA level
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URA PCH Layered Paging: Benefit
•
Benefit :
›
Save signaling in cell reselection compared with Cell PCH, the FACH consumption relative gain is
about 10~20%.
The successful rate of layer1 paging(Paging in cell level) in URA PCH is about 90% according to one
live network’s statistics.
Easy to deploy URA PCH, save OPEX.
›
›
An example for FACH consumption in one live network
Top Cell Success
Update No. in
BH(Cell PCH)
14934
38851
13428
15210
39625
13995
44680
43157
•
Cell reselection
Consumption on
FACH(Cell PCH)
4.15%
10.79%
3.73%
4.23%
11.01%
3.89%
12.41%
11.99%
Total Utilization on
FACH(Cell PCH)
Total Utilization on
FACH(URA PCH)
FACH Consumption
Gain(URA PCH vs Cell PCH)
24.50%
68.34%
20.22%
22.02%
55.80%
36.16%
62.64%
66.72%
20.35%
57.55%
16.49%
17.80%
44.79%
32.27%
50.23%
54.73%
16.93%
15.79%
18.45%
19.19%
19.73%
10.75%
19.81%
17.97%
Negative Impaction:
›
›
The paging number is increased, compared with Cell PCH.
The increased paging loading is about 3~5%, which is depend on the ratio of idle state and Cell PCH
state user number in the network.
» If the paging loading of cell is too high, URA PCH is not suggested.
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URA PCH Layered Paging: Activation

Dependency





Hardware Dependency：NA
Software Dependency：Introduced in RAN14
UE Dependency：NA
Feature Dependency：NA
License Dependency
License of optional feature WRFD-140206 URA_PCH layered Paging.
• Activation method
step 1:RNC updates to RAN14;
step 2:License of basic feature WRFD-140206 URA_PCH layered Paging;
step 3:Switch on the feature.
SET URRCTRLSWITCH: URAPCH_LAYERED_PAGING_NO_RT_SWITCH =ON,
URAPCH_LAYERED_PAGING_RT_SWITCH=ON;
• Deactivation method
switch off the feature:
SET URRCTRLSWITCH: URAPCH_LAYERED_PAGING_NO_RT_SWITCH =OFF,
URAPCH_LAYERED_PAGING_RT_SWITCH=OFF;
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Control Channel Parallel Interference Cancellation Phase2
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CCPIC Phase2: Background
•
•
The self interference in the WCDMA system greatly affects its capacity and coverage.
The high Smartphone penetration network indicate users usually have low data rate and low
activity services, the UL DPCCHs are always on and form a substantial source of interference.
The DPCCH of low data rate transmission can occupy above 30% power in the uplink based
on the following figure.
DPCCH Power Ratio(CAT5)
40,00%
Ratio of DPCCH power to Total Power
•
35,00%
30,00%
25,00%
20,00%
15,00%
10,00%
5,00%
0,00%
1900
1700
1500
1300
1100
900
700
500
300
100
TbSize(bit)
Control channel Parallel Interference Cancellation (CCPIC) cancels the uplink interference
from DPCCH signal, and improves the capacity and performance. The ratio of all users’
DPCCH Power to RTWP is more larger, the CCPIC gain is more larger.
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CCPIC Phase2: Solution

Description (cont.)


Before RAN14, CCPIC can only be done within baseband board, so the gain is fluctuated according to
the different boards configuration.
From RAN14, CCPIC phase 2 improves the channel estimation performance and support CCPIC pool,
which takes baseband boards as a pool to do CCPIC, so the CCPIC gain can be maximized.
CCPIC
pool
cell1
board
1
UE A
board
2
UE B
CCPIC
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UE C
CCPIC
CCPIC
Phase II
UE D
CCPIC Phase2 : Benefit

Scenario


Benefits



More users can be accepted if RNC perform admission control according to RTWP.
Higher total cell throughput can be achieved in hot spot during busy hours. The actual gain is decided
by the proportion of UL DPCCH in RTWP.
If the traffic is not quite heavy, RTWP reducation can be seen as the gain.
Impact of Network

No negative impact.
35.00%
30.00%
capacity improvement

High Smartphone penetration and quite a lot of online users.
25.00%
• From lab test: CCPIC PHASE 2 improves
20.00%
CCPIC
15.00%
CCPIC PHASE 2
up to 20% UL capacity improvement
under 24 HSUPA users online and ftp
upload, more users more gain.
10.00%
5.00%
0.00%
8
12
16
20
24
user number(Hsupa CAT5)
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CCPIC PHASE 2: Activation

Dependency

Hardware Dependency
•Only 3900 series base stations support this feature.
•At least one WBBPd1, WBBPd2, WBBPd3, WBBPf1, WBBPf2, WBBPf3, or WBBPf4 must be configured.
•If inter-board CCPIC is needed, a minimum of one WBBPd or WBBPf board needs to be configured in the uplink
resource group. In addition, at least one of the boards is configured in slot 2 or slot 3.
•This feature has no special hardware requirement for the BTS3902E base station.



Software Dependency：Introduced in RAN14
UE Dependency：NA
Feature Dependency
WRFD-010210 Control Channel Parallel Interference Cancellation (CCPIC)

License Dependency
License of optional feature WRFD-140202 Control Channel Parallel Interference Cancellation (Phase 2)
Activation method
•
›
›
•
step 1: Activate the license for the CCPIC feature .
step 2: Activate the license for the CCPIC (Phase 2) feature.
Deactivation method
›
Deactivate the license for the CCPIC (Phase 2) feature to deactivate this feature.
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Dynamical HSDPA CQI Feedback Period
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Dynamic Configuration of HSDPA CQI Feedback Period: overview
Normal CQI Period
CQI
CQI
CQI
CQI
Advantage:
More CQI transmission, smaller CQI delay.
Shortage:
Higher power is required in UE, higher UL load.
CQI Period switch could be triggered by UL load
Longer CQI Period
CQI
CQI
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Advantage:
Smaller power is required in UE, lower UL load.
Shortage:
longer CQI delay.
Page 64
Dynamic Configuration of HSDPA CQI Feedback Period: Solution
UL Load
Total UL load
Normal CQI Period
Congest Threshold 1
Controllable Load
UL uncontrollable load
CQI
CQI
CQI
CQI
UL load is reduced.
Congest Threshold 2
Longer CQI Period
Uncontrollable Load
CQI
CQI
Time
Normal CQI Period
•
•
•
Uncontrollable Load: R99 load + control channel load + load of QoS guarantee.
Controllable load: load of HSUPA scheduled service.
If the uncontrollable load is higher than congest threshold 2 and total load is
higher than congest threshold 1.
›
•
Longer CQI Period
The CQI feedback Period for new user will be configured as longer one to reduce the uplink
load.
Otherwise
›
normal CQI period is configured to new user.
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Dynamic Configuration of HSDPA CQI Feedback Period: Benefit
Scenario:
34%
It is suitable for high UL load and a lot of HSDPA
users on line.
Benefits:
From Simulation: The longer CQI and more
HSDPA users, the gain of UL load is bigger.
Refer to the left figure it is about 10%~30%.
Impact:
Longer CQI period may impact the DL peak
throughput due to CQI delay. But it may be
not a question because DL throughput per
user is not high when longer CQI period is
used.
Traffic model: Burst service in the downlink on HSDPA, the
corresponding TCP ACK is carried on HSUPA
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Dynamic Configuration of HSDPA CQI Feedback Period: Activation

Dependency




Hardware Dependency：NA
Software Dependency：Introduced in RAN14
UE Dependency：NA
Feature Dependency
WRFD-010610 HSDPA Introduction Package
WRFD-010611 HSDPA Enhanced Package

License Dependency
License of Dynamical HSDPA CQI configuration.
• Actiation
› The license of Dynamical HSDPA CQI configuration feature is required.
› The switch of Dynamical HSDPA CQI Feedback Period based on UL Load
should be ON to start the function.
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Adaptive Adjustment of HSUPA Small Target
Retransmissions
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Adaptive Adjustment of HSUPA Small Target Retransmissions: Solution
Set NHR target
In multi HSUPA users scenario, when uplink load is limited,
increasing retransmission number can improve cell throughput.
UE initial Access
MAX(EdchTargetLittleRetransNum,
EdchAltTarLittleRetransNum)
Uplink load is not limited and
UE throughput > upper threshold
No
Yes
HARQ retransmission number is used as the target value of
HSUPA uplink outer loop power control.
1. When uplink load is not limited, using smaller NHR target to
improve UE power to achieve more throughput.
2.When uplink load is limited, using bigger NHR target can
increase throughput because of higher HARQ gain.
NHR: Numbers of HARQ Retransmission
MIN(EdchTargetLittleRetransNum,
EdchAltTarLittleRetransNum)
Inner-loop
Outer-loop
No
Uplink load is limited and
UE throughput <lower
threshold
NHR target
Adjust
SIR target
SIR target
Generate
TPC to UE
Yes
NHR
Typical threshold
MBR（Mbit/s）
10ms（MBR=2.048）
2ms (MBR=5.44)
E-DCH Data
RNC
upper threshold(Mbit/s）
1.84
4.08
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SIR
NodeB
lower threshold(Mbit/s）
1.43
3.81
Page 69
TPC
TPC
Adjust
Power
UE
Adaptive Adjustment of HSUPA Small Target Retransmissions: Benefits
• Scenario
• It is suitable for high UL load and a lot of 10ms HSUPA TTI users on line.
• Benefit
• When uplink load is limited, increasing retransmission number can improve cell
throughput. 2ms HSUPA TTI users have configured NHR=10% before RAN14.0, it’s
beneficial for 10ms HSUPA TTI users.
If uplink load is limited(Rot = 6dB) and
NHR=10%, the more 10ms HSUPA TTI
users is, the more throughput gain can be
got. The average gain is about 10%.
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Adaptive Adjustment of HSUPA Small Target Retransmissions: Activation

Dependency
Hardware
Dependency：NA
Software Dependency： Introduced in RAN14
UE Dependency：NA
Feature Dependency
WRFD-010612 HSUPA Introduction Package
License
Dependency: NA
• Set the following parameters to enable this feature:
[RNC] SET UCORRMALGOSWITCH: PcSwitch=
PC_HSUPA_LITRETNUM_INIT_SEL_SWITCH-1
&PC_HSUPA_LITRETNUM_AUTO_ADJUST_SWITCH-1.
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Intelligent Access Class Control
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Intelligent Access Class Control: Background
CHALLENGE:


GREEC
E
SPAI
N
Massive concentration traffic exists in a single site/cell,
especially in the scenarios of concert, sport stadium, etc.
Smartphone penetration keeps increasing.
Impact on system stability
INTENTION:

In case of extremely congestion, Intelligent Access Class Control can bar some ACs dynamically to
keep a stable system.
SOLUTION
RNC
Intelligent AC
restriction
Cell A
Block service
request in a short
time period.
Iub
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Intelligent Access Class Control: Solution Introduction(1/4)
Intelligent Access Class Control Overall:
Check the congestion
Congestion
trigger
status of Cell
Other
Congestion
Release
ΔT1
Increase the number
of barred AC
Keep the number
of barred AC
Decrease the number
of barred AC
Select barred ACs in round robin mode
and broadcasts the barred ACs in SIB3.
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ΔT2
The RNC checks the cell status and
dynamically adjusts the number of
barred ACs based on latest cell
congestion decision every period
specified by ΔT1.
The RNC Bars the ACs in round robin
mode and broadcasts the barred ACs
information every polling period specified
by ΔT2
Page 74
Intelligent Access Class Control: Solution Introduction(2/4)
Cell Congestion Check:
Based on
Based on
RRC Setup rejectionRAB Setup rejection
Rate(Mandatory)
Rate(Optional)
Decisi
on
result
Based on
Uplink Load
(Optional)
Based on
SPU CPU
(Optional)
1. The RNC makes independent congestion
decisions based on the enabled conditions(1
or more ), and output the decision result
separately:


Decisi
on
result

Joint congestion decision based on
RRC Setup rejection rate
and RAB Setup rejection rate
Decisi
on
result
Decisi
on
result
2. Joint congestion decision based on RRC
Setup rejection rate and RAB Setup rejection
rate:


Decisi
on
result

Comprehensive cell congestion decision


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If either is Congestion-Trigger, the joint
decision result is Congestion-Trigger.
If both are Congestion-Release, the joint
decision result is Congestion-Release.
Otherwise, the joint decision is CongestionNormal.
3. Comprehensive cell congestion decision:

Decisi
on
result
Congestion-Trigger state
Congestion-Release state
Congestion-Normal state
If all decision results are Congestion-Trigger,
the comprehensive decision result is
Congestion-Trigger.
If any of decision results is CongestionRelease, the comprehensive decision result is
Congestion-Release.
Otherwise, the comprehensive cell congestion
decision
is Congestion-Normal..
Page
75
Intelligent Access Class Control: Solution Introduction(3/4)
Dynamically Adjusting the Number of Barred ACs:
Adjust the Number of barred ACs based on the latest
comprehensive cell congestion decision,



Be possible of ensuring the priority of CS
Services.
Increasing:
Congestion-Trigger: increase the number of
barred ACs.
Congestion-Release: decrease the number of
barred ACs.
Congestion-Normal: keep the number of barred
ACs.
The RNC divides services-initiated behaviors into
three levels ,



Level 1: PS services initiated by UEs complying
with 3GPP Release 6 and later.
Level 2: CS and PS services initiated by UEs
complying with versions earlier than 3GPP
Release 6
Level 3: CS services initiated by UEs complying
with 3GPP Release 6 and later
Decreasing:
Increase/decrease the number of barred ACs based
on the level priority,


Increasing: Level 1  Level 2  Level 3
Decreasing: Level 3  Level 2  Level 1
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Intelligent Access Class Control: Solution Introduction(4/4)
Bar ACs in Round Robin Mode:
20 seconds, Meet
Congestion trigger Condition
Benefits :
Ensure access fairness between
UEs from different ACs
R6
PS
R5
R6
CS
R6
PS
R5
20 seconds, Meet
20 seconds, Meet
Congestion trigger Condition Congestion trigger Condition
R6
CS
R6
PS
R5
R6
CS
R6
PS
R5
R6
CS
R6
PS
R5
R6
CS
R6
PS
R5
R6
CS
AC0
AC1
Example :

Judge Cell Congestion
Condition every 20
seconds(ΔT1)
• AC polls every 10
seconds(ΔT2)
• Restriction Priority:
R6 PS -> R5 -> R6 CS
• AC Restriction Range:
AC0-AC9
AC2
…
AC3
AC4
AC5
AC6
AC7
AC8
AC9
AC Poll
Interval
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…
AC Poll
Interval
AC Poll
Interval
Page 77
AC Poll
Interval
AC Poll
Interval
AC Poll
Interval
Intelligent Access Class Control: Impact Analysis
Benefit:


In case of extremely congestion, barring some ACs can save the UL power
and signaling operation resources to enhance system stability.
Intelligent AC control can increase the RRC/RAB success rate in the
congestion scenarios.
Impact:




The experience of the UE whose AC is barred is impacted.
If the UE is in PCH state, the service request cannot be forbidden by AC
restriction.
If the distribution of AC is not uniformity, the effect of AC control will be
influenced.
For the R99/R4/R5, it is impossible to bar only PS and keep CS.
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Intelligent Access Class Control: Activation Guide
Activation method:
step 1: Update the RNC to RAN14
step 2: Activate the License of WRFD-140213 Intelligent Access Class Control
SET LICENSE: SETOBJECT = UMTS, OperatorType = XXX,
FUNCTIONSWITCH6 = INTELLIGENT_ACCESS_CLASS_CONTROL -1
step 3: Switch on Intelligent AC Control
ADD UCELLCONGACALGO : CongACSwitch = ON.
step 4: Run the ADD UCELLCONGACALGO command on RNC to configure
the AC restriction range specified by ACRstrctRange.
Deactivation method:
step 1:Switch off Intelligent AC Control.
ADD/MOD UCELLCONGACALGO : CongACSwitch =OFF.
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Intelligent Access Class Control: Verification
Activation Observation :

The VS.AC.CongCtl.Time counter reflects feature effectiveness. If the value of
the VS.AC.CongCtl.Time counter is not zero, this feature has taken effect.
Performance Verification:
After activating the feature , check if the RRC/RAB success rate increase in the
congestion by observing the KPI as follow：
 RRC Setup Success Ratio (Cell.Service)
 RRC Setup Success Ratio (Cell.Other)
 AMR RAB Setup Success Ratio(Cell)
 CS RAB Setup Success Ratio (Cell)
 PS RAB Setup Success Ratio (Cell)
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Capacity for hot Site
HSPA+
Experience
Smartphone
Performance
Security
Performance
1, Dynamic Target ROT Adjustment;
2, Outer Loop Power Control Enhancement;
3, Inter-Frequency Load Balance Based on Configurable Load Threshold;
4 Inter-frequency Load Handover based CE Congestion;
5, CE Overbooking;
6, Load-based Uplink Target BLER Configuration;
7, HSDPA Scheduling Based on UE Location;
8, Adaptive Configuration of Typical HSPA Rate;
9, Inter-frequency Load Handover based CE Congestion;
10, Independent Demodulation of Signals from Multiple RRUs in One Cell.
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Easy Network
Dynamic Target RoT Adjustment
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Dynamic Target RoT Adjustment: Solution


Description

This feature provides a mechanism to dynamically adjust the ROT (Rise Over Thermal) target for
HSUPA, which will increase the capacity of HSUPA without impacting other users.

Higher ROT will lead to the coverage
shrinking (the circle with dashed line
represents cell coverage edge in the
right figure). So RNC will monitor
whether some UEs’ uplink power are
limited and decide to step up or step
down the ROT target periodically.
Scenario


The uplink coverage is not limited, such
as indoor case.
There is some coverage margin in urban
area, which can be dynamically adjusted
to improve uplink capacity.
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Dynamic Target RoT Adjustment : Benefits

Benefits
The uplink capacity is expanded:
 More users can be accepted if RNC
perform admission control according to
RTWP.
 Higher cell total throughput (up to 20%
gain) can be achieved during the busy
hours in uplink load congestion.
Simulation result on the right figure
indicates above 20% capacity gain
when RoT is dynamically adjusted from
6dB to 10dB under good RF condition
scenario in high load.


If the uplink load is low, the ROT
adjustment is not necessary and no gain.
Impact of Network

Expanded uplink capacity leads to higher uplink load, so the KPI of access and
call drop may get a little potential negative impact.
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Dynamic Target RoT Adjustment: Activation

Dependency




Hardware Dependency: NA
Software Dependency: Introduced in RAN14
UE Dependency: NA
Feature Dependency
WRFD-010612 HSUPA Introduction Package.

License Dependency
License of optional feature WRFD-140211 Dynamic Target RoT Adjustment.
•
Activation method
step 1:RNC updates to RAN14.
step 2:License of optional feature WRFD-140211 Dynamic Target RoT Adjustment is activated.
step 3: MOD UCELLHSUPA: CellId=XX, DynTgtRoTCtrlSwitch=ON; switch on Dynamic Target RoT
Adjustment.
•
Deactivation method
switch off Dynamic Target RoT Adjustment: MOD UCELLHSUPA: CellId=XX, DynTgtRoTCtrlSwitch=Off.
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Outer Loop Power Control Enhancement
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Outer Loop Power Control Enhancement: Background
•
Background
Uplink SIRtarget is fast increased but slowly decreased, which wastes uplink power and capacity.
SIRtarget(dB)
SIRtarget
4,5
4,4
4,3
4,2
4,1
4
3,9
0
2
4
TIme(s)
6
8
• OLPC Enhancement
OLPC Enhancement realizes quick adjustment of uplink SIRtarget, then reduces waste of uplink power,
and finally improves network capacity.
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Outer Loop Power Control Enhancement: Solution
 First scenario: To ensure service setup success
ratio, initial SIRtarget is generally set to a large
value.
In OLPC enhancement, after service setup, a
larger step is used to quickly adjust SIRtarget, until
SIRtarget <= reference SIRtarget , or
BLERmeas>0.
ΔSIRtarget(i) = -SIRtargetDownSpeed *
SIRADJUSTPERIOD.
 Second scenario: Burst interference generally
results in a far large BLERmeas, then SIRtarget
quickly increases.
In OLPC enhancement, when BLERmeas>50%,
SIRtarget is not increased for a short period.
 Third scenario: UE transmit power becomes
limited, then SIRtarget quickly increase.
In OLPC enhancement, once UE transmit power
becomes limited, SIRtarget=initial SIRtarget. When
UE transmit power becomes unlimited, a larger
step size is used to quickly adjust the SIRtarget,
the same as scenario one.
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Outer Loop Power Control Enhancement: Benefits
•
•
Capacity gains can be mainly introduced by first scenario, and the second
and third scenario is difficult to estimate.
Traffic model of first scenario
User Num per 90 second
Service Type
Operator A/cell users
Operator B/cell users
•
Non-busy hour
Busy hour
64k interactive
5
15
AMR 12.2k
6
28
128k interactive
2
6
64k interactive
6
26
AMR 12.2k
5
30
Capacity gain of first scenario
Scenario
Operator A/cell
Operator B/cell
HSUPA available
payload(%)
Payload Saving
Cell Throughput
HSUPA available
payload(%)
Payload Saving
Cell Throughput
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Non-busy hours
Busy hours
Huawei OLPC
Huawei OLPC
Huawei OLPC
Huawei OLPC
enhancement
enhancement
64.61%
65.05%
35.92%
0.43%
0.88%
65.97%
37.37%
1.46%
7.12%
66.35%
29.26%
0.38%
0.86%
31.06%
1.79%
9.48%
Page 89
Outer Loop Power Control Enhancement: Activation
• Activation method
step 1:RNC updates to RAN14.
step 2:License of basic feature WRFD-020503 Outer Loop Power Control is activated.
step 3:Switch on OLPC enhancement. SET UCORRMALGOSWITCH：
PcSwitch=PC_OLPC_FastDown_Optimize_SWITCH-1.
• Deactivation method
Switch off OLPC enhancement. SET UCORRMALGOSWITCH:PcSwitch=
PC_OLPC_FastDown_Optimize_SWITCH-0.
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Inter-Frequency Load Balancing Based on
Configurable Load Threshold
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Inter-Frequency Load Balancing Based on
Configurable Load Threshold:Background
•
Overlay Cells Problem


•
Load balance Requirement among Hetnet Cells



•
In some special scenarios, one site is established by two
vendors, for example: F1/F2 cells of one site are belong to
RNC1(vendor A), and F3 cells of the site are belong to
RNC2(vendor B). The load balancing of multi-frequency in one
site can’t be achieved between two vendors equipments.
This scenario need to do Load balance between vendors
mostly is inter-RNC scenario.
Macro cells have continuous coverage, most of users attempt
to stay in the macro cells, which cause the high loading in
macro cells.
Micro cells are used to absorb the PS users with low speed, the
load management is required. If micro cell load is too high,
push the users back to Macro cells.
This scenario maybe include intra-RNC and inter RNC
scenario, and need to do the Load balance before cell
congestion.
DL Total Throughput（MByte）
1,000
800
600
400
200
0
0
50
F1 Belong to RNC1

Micro
F2
F3 Belong to RNC2
Micro
Micro
Offload
Macro
F1
Solve the cells load balancing of sectors in one site which
belong to intra-RNC or inter-RNC.
Provide another way to configure the load threshold for load
balancing, except for LDR for load balancing in high loading.
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150
Hetnet
The Goal

100
F2 Belong to RNC1
Page 92
Macro
200
Inter-Frequency Load Balancing Based on Configurable Load
Threshold:Solution
Start
Next CLB Period
Is Cel l in CLB State
No
Yes
Handover users selection
a) User service selection : CS or PS
b) User Integrated Priority of
scheduling : Lower Priority
c) User Speed: Low speed
Next CLB Period
CLB Target Cell selection
a) Cell with CLB Flag
b) Cell support UE frequency
c) Cell priority: Highest priority
CLB State Trigger and Release process
RNC A
RNC B
Cell
Compressible Mode User
No.< thresholds
No
Yes
CLB Target cell is low
when it is not in CLB State
Is in CLB
state
Is high load
Cell
Using an independent
Statistic Module to get the num of
inter-frequency handover failures.
If num is higher then Threshold,
RNC A can know the target CELL
Is high load ,and don’t select it.
Inter-frequency Measurement and
handover
CLB Target Cell
CLB Target Cell
End
CLB Target Cell
CLB Target Cell
Inter-Frequency Load Balancing Based on
Configurable Load Threshold Flow Chart
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How to judge the CLB Target cell load
Page 93
Inter-Frequency Load Balancing Based on Configurable Load
Threshold:Benefit
• Advantage:
› Overlay Scenario
 Solve the cells load balancing of sectors in one site which belong to intraRNC or inter-RNC.
 Get better resources usage(such as power,CE,code ) between multifrequency.
› Hetnet scenario
 Provide anther way to configure the load threshold for load balancing,
except for LDR for load balancing in high loading.
 More traffic of macro cells can be offloaded to micro cells and improve
the micro cells usage in hot point.
 The CS resource thresholds can be set higher than PS service, which
help micro cells to absorb PS service.
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Inter-Frequency Load Balancing Based on
Configurable Load Threshold: Activation
• Activation method
step 1: RNC updates to RAN14.
step 2: License of Optional feature WRFD-140217 Inter-Frequency Load Balancing Based on
Configurable Load Threshold is activated.
step 3: If load balancing between multiband frequency ,make sure License of Optional
feature WRFD-020110 Multi Frequency Band Networking Management is activated.
step 4: Switch on CLB. ADD UCELLALGOSWITCH：NBMLdcAlgoSwith=UL_UU_CLB1&DL_UU_CLB-1&CELL_CODE_CLB-1&CELL_CREDIT_CLB-1.
step 5: Choose the cell load balancing range, such as inter-RNC. ADD UCELLCLB：
CellLoadBalanceRange = ONLY_TO_INTRA_RNC (or ONLY_TO_INTER_RNC, or
BOTH_TO_INTRA_RNC_AND_INTER_RNC).
step 6: CLB parameters set, such as load threshold, user number threshold and so on.
• Deactivation method
Switch off CLB. MOD UCELLALGOSWITCH：NBMLdcAlgoSwith=UL_UU_CLB0&DL_UU_CLB-0&CELL_CODE_CLB-0&CELL_CREDIT_CLB-0
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Inter-freqency Load Handover based CE
Congestion
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Inter-frequency Load Handover based CE Congestion:
Background
Before RAN14.0, CE usage of multi cell
groups in one NodeB(intra NodeB) or CE
usage of multi NodeBs(inter NodeB) maybe
not balance, which has negative impact on
system capacity and RAB setup success ratio;
Intra-NodeB
Cell
Group1
Used
CEs
Inter-NodeB
Cell
Used
Group2
CEs
NodeB 1
Used
CEs
Intra-NodeB
RAN14.0 enhance “inter-freqency load
handover”, not only power and code can
trigger inter-frequency load handover, CE
congestion also can trigger inter-frequency
load handover, which improves CE usage
balance intra-NodeB or inter-NodeB;
Cell
Group1
Used
CEs
CE
congestion
threshold
Inter-NodeB
NodeB 1
Cell
Group2
Used
CEs
Used
CEs
NodeB 2
Used
CEs
Code
Inter-freq
Power
load handover
CE
RAN14.0
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NodeB 2
Used
CEs
Page 97
CE
congestion
threshold
Inter-freqency Load Handover based CE Congestion:
Solution
RAN14.0 enhance “inter-freqency load handover”, select some users of CE congested cell group of NodeB
or CE congested NodeB to hand over to no congested cell group of NodeB or no congested NodeB:
Is the used
CE higher than
Threshold?
Select handover users that must
be PS service and the lowest
priority, and its throughput is
lower than UlInterFreqHoBWTh .
This threshold can be
configured by the
UlLdrCreditSfResT
hd
Parameter.
N
Y
N
According to
InterFreqLDHOMethodSelection
parameter, select Blind Handover
or Measurement Handover.
Select handover user
Y
Target cell’s freq band is supported by the
handover user , and target cell has enough
spare CEs resource which is higher than
UlInterFreqHoCeLDRSpaceThd.
Blind
Blind or Measurement
handover
Select blind handover
neighboring cell
N
N
Measurement
Select Measurement handover
neighboring cell
Y
Y
Based blind handover, Select
user to the target cell
Based measurement handover,
Select user to the target cell
Next period: repeat above steps
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Inter-freqency Load Handover based CE Congestion:
Benefit
• Benefit
› Improve CE used ratio by balancing CE resource between cell groups
of intra NodeB or inter NodeBs, which improves UL capacity
throughput.
› when there are no blind handover inter-freq neighbor cells for the CE
congested cell, this solution can improve RAB setup success ratio.
• Negative Impaction
› The CE congestion fault decision will increase the inter-frequency
handover number, which has small impaction on the call drop ratio.
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Inter-freqency Load Handover based CE Congestion:
Activation

Scenario



Multi carrier coverage.
Cells covering the same area belong to more than one uplink cell groups in NodeB or more than one
NodeB.
Dependency





Hardware Dependency：NA
Software Dependency：Introduced in RAN14.
UE Dependency：NA
Feature Dependency：NA
License Dependency
License of option feature WRFD-020103/ WRFD 020110/ WRFD 020160.
•
Activation method
step 1:RNC updates to RAN14.
step 2:License of option feature WRFD-020103/ WRFD 020110/ WRFD 020160 is activated.
step 3:Switch on inter-freqency handover based CE congestion.
ADD/MOD UNODEBLDR ： Set one action of UlLdrFirstAction~ UlLdrEighthAction to InterFreqLDHO .
•
Deactivation method
Switch off inter-freqency handover based CE congestion.
MOD UNODEBLDR：Set InterFreqLDHO of UlLdrFirstAction~ UlLdrEighthAction to NoAct.
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CE Overbooking
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CE Overbooking: Background
•
Current Status of CE Resource Management
After WRFD-010638 Dynamic CE Resource Management is applied, the NodeB calculates the actual CE usage based on the
UE rate. The RNC calculates the credit resource usage of an admitted HSUPA UE with the following formula to ensure HSUPA
user experience:
Credit resource usage = Max (Credit resources required for ensuring the GBR, Credit resources required for transmitting one
RLC PDU)
For 2ms TTI HSUPA smartphones, PS data transmission is discontinuous, the actual UE data rate may be much lower than
the GBR or the data rate at which an RLC PDU can be transmitted. As a result, in a network with many on-line 2ms TTI
HSUPA smartphones, the RNC may reject new UE access attempts even if the actual CE usage of the NodeB is low.
•
Purpose of Huawei CE Overbooking
When many on-line 2ms TTI HSUPA smartphones and the HSUPA average throughput is low, enabling this feature reduces
the credit resource usage of admitted UEs, improving RNC‘s capability to perform admission control based on credit resource
usage. Much more HSUPA users can use 2ms TTI to achieve a higher peak rate and a shorter scheduling delay.
•
Scenario
›
Many on-line 2ms TTI HSUPA smartphones and frequent HSUPA PS calls access.
›
Dissatisfactory HSUPA RAB setup success rate when CE usage is relatively low in NodeB because of low average
HSUPA throughput.
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CE Overbooking: Solution Introduction (1/2)
CE Overbooking Overall:
UE
RNC
NodeB
Iub
Uu


The NodeB Modified the credit resource
usage of admitted UEs based on the
actual CE resource usage in NodeB .
NodeB periodically reports the credit
resource usage to RNC through the Iub
private interface, which is added in the
COMMON MEASUREMENT REPORT
message.
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CN
Iu

RNC receives the credit resource
usage through the Iub interface and
performs CAC,LDR or TTI selection
based on the credit resource usage.
Page 103
CE Overbooking: Solution Introduction (2/2)
Credit resource calculation methods before and after activating this feature
CE Overbooking
Credit Resource Usage
RNC calculates with the following formula :
Not activated
R99：Credit resource usage = Credit resources required for ensuring the MBR。
HSUPA：Credit resource usage = Max (Credit resources required for ensuring the
GBR, Credit resources required for transmitting one RLC PDU)
RNC calculates with the following formula :
R99：Credit resource usage = Credit resources required for ensuring the MBR。
Activated
HSUPA：Credit resource usage is adjusted by the CE consumed and the paramete of
CeResFor2msQos, at the same time, assuring that Credit resource usage doesn’t
exceed MIN{ Max (Credit resources required for ensuring the GBR, Credit resources
required for transmitting one RLC PDU)}
Table bellow is an example for the Credit resource usage
Scenario (2ms,GBR=64kbps)
CE Overbooking
UL actual rate = 0kbps
CE
actually allocated = 1CE
Not Activated
CE Overbooking
UL actual rate = 0kbps
CE
actually allocated = 1CE
Activated
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CE actual
usage In
NodeB
Credit resource usage for
admission control In
RNC(( 1CE=2credit )
1CE
16Credit
1CE
2Credit
Page 104
CE Overbooking: Impact Analysis
• Benefits
When the HSUPA users average throughput is low, CE Overbooking will reduced
the credit congestion :



More UEs can access.
The probability of load reshuffling (LDR) actions caused by credit resource congestion is
reduced.
The probability of “admission-CE-based dynamic TTI adjustment” from 2 ms to 10 ms HSUPA is
reduced. More HSUPA UEs can use the 2 ms TTI.
• Risk
When lots of UEs have data to transmit at the same time, the required CEs can’t be full
satisfied:


A few UEs’ GBR cannot be satisfied.
if the function “admission-CE-based dynamic TTI adjustment” is not used, 2ms TTI HSUPA
user can’t reconfigured to 10ms TTI in the shortage of CEs, which cause some calls drop.
Suggest switch on the function “admission-CE-based dynamic TTI adjustment”.
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CE Overbooking: Activation Guide
• Dependency





Hardware Dependency
» The EBBI , EBOI , EULP or EULPd board is configured on the BTS3812E/A/AE.
» The EBBC or EBBCd board is configured on the DBS3800.The EBBM board is configured on the
BBU3806C.
» The WBBPb ,WBBPd or WBBPf board is configured on the 3900 series base stations.
Software Dependency：Introduced in RAN14.
UE Dependency：NA
Feature Dependency： WRFD-010638 Dynamic CE Resource Management.
After CE Overbooking is activated, it is recommended that DRA_BASE_ADM_CE_BE_TTI_RECFG_SWITCH
under the DraSwitch parameter be set to ON.
License Dependency： License of basic feature WRFD-140212 CE overbooking is activated.
• Activation method
step 1:RNC updates to RAN14.
step 2:NodeB updates to RAN14.
step 3:License of basic feature WRFD-140212 CE overbooking is activated.
• Deactivation method
Deactivated the license of CE Overbooking.
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CE Overbooking: Key Parameter
• CeResFor2msQos





Meaning：
» The minimum admission CE reserved for 2ms HSUPA.
MML
» SET NODEBRSVP：REVDPARA4.
Actual Value Range ：
» 1-8.
Default Value ：
» 4.
Commended Value setting：
» Suggest parameter value：4-8.
» When the parameter is set in the range from 1 to 3，the credit resource usage for 2ms
HSUPA UE is smaller. excessive number of HSUPA UEs will be admitted, and
increases the call drop rate for HSUPA UEs, affect KPI seriously.
» When the parameter is set in the range from 4 to 8，the credit resource usage for 2ms
HSUPA UE is bigger. Moderate number of HSUPA UEs will be admitted, the impaction
of KPI is slight.
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CE Overbooking: Verification(1/2)
• When to Use CE Overbooking




A large number of 2 ms HSUPA smart-phones in the network
Insufficient credit resources in RNC
Low HSUPA UE’s average throughput
CE resource utilization of the NodeB lower than the credit resource utilization of
the RNC
• Information to Be Collected



VS.LC.ULCreditUsed.Mean：measures the credit resource usage
VS.LC.ULMean.LicenseGroup：measures the CE resource usage
VS.RRC.Rej.ULCE.Cong and VS.RAC.NewCallReq.Fail.ULCE.Cong：indicates
whether credit resources are congested
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CE Overbooking: Verification(2/2)
• Performance Monitoring
After CE Overbooking is activated in a network with many 2ms TTI HSUPA smartphones,
monitor the following counters :





VS.RRC.Rej.ULCE.Cong, VS.RAC.NewCallReq.Fail.ULCE.Cong and
VS.HSUPA.RAB.FailEstab.ULCE.Cong
Check these counters to determine whether the credit resource congestion decreases .
VS.HSUPA.TTI2to10.Succ
Check this counter to determine whether the number of TTI adjustments caused by CE
congestion decreases.
VS.MeanRTWP
Check this counter to determine whether the air interface load increases.
VS.HSUPA.MeanBitRate
Check this counter to determine the average cell throughput increases.
VS.HSUPA.UE.Mean.TTI2ms
Check this counter to determine the 2ms HSUPA user number in the cell
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Dynamical UL BLER target based on UL Load
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Load-based Uplink Target BLER Configuration: Solution
UL Load
Total UL load
Congest Threshold 1
Controllable Load
UL uncontrollable load
Congest Threshold 2
Uncontrollable Load
Time
Normal BLER target



Uncontrollable Load: R99 load + control channel load + load of QoS
guarantee.
Controllable load: load of HSUPA scheduled service.
if the uncontrollable load is higher than congest threshold 2 and total UL load is
higher than congest threshold 1.


Larger BLER target
The UL BLER target for new R99 service will be set larger value to reduce the
uplink load.
Otherwise
 UL BLER for new R99 service is the normal value.
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Load-based Uplink Target BLER Configuration: Benefits
Scenario:

It’s suitable for high uplink load and a lot of R99 in uplink online.

Benefits

From Simulation: the UL load is reduced by 15% when 30 UL R99 users are online if UL
BLER target is increased from 1% to 10%.

UL Load (%)
TU3 UL Bandwidth =32kbps

User number
Impact of Network

Larger BLER will decrease the peak throughput of R99 user, this feature is suggested to take
effect when the traffic is heavy, therefore congest threshold 2 is suggested not to be set too low.
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Load-based Uplink Target BLER Configuration: Activation

Dependency

Hardware Dependency
NA

Software Dependency
Introduced in RAN14.

UE Dependency
NA

Feature Dependency
NA

License Dependency
License of Dynamical UL BLER target based on UL Load.

Activation
› The license of Dynamical UL BLER target based on UL Load is required.
› The switch of Dynamical UL BLER target based on UL Load should be
ON.
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Adaptive Configuration of Typical HSPA Rate
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Adaptive Configuration of Typical HSPA Rate:Background
•
The fixed and separated data rate problem:
›
An example for the fixed and separated data rate configuration list
Typical traffic rate is configured at the RNC with fixed
and separated data rate, and may be inconsistent with
the MBR required by mobile operators.
›
If a traffic rate inconsistency occurs between the RNC
and CN, RNC selects a typical traffic rate closest to
the MBR assigned by the CN.
• Optimization
›
RNC can use the MBR assigned by the CN to calculate the actual maximum traffic rate
when the MBR cannot be mapped onto any fixed typical traffic rate.
›
Note that the final MBR is also decided by the maximum rate supported by the UE, the
maximum rate supported by the serving cell, and the rate specified in the license file.
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Adaptive Configuration of Typical HSPA Rate: Solution
Typical traffic
rate in RNC
Typical traffic
rate in RNC
MBR
from CN
High data rate
MBR
from CN
High data rate
UE
UE
Low data rate
RNC
Low data rate
CN
Choose the closest typical rate to the UE
RNC
Keep the same MBR from CN to the UE
• RNC uses the MBR assigned by the CN to calculate the actual maximum traffic
rate.
• This feature is applicable only to PS BE services and HSPA Bears.
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CN
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Adaptive Configuration of Typical HSPA Rate: Impaction

The actual achieved traffic rate of user with the feature maybe different with
that data rate without the feature:


If the MBR assigned by the CN is greater than the TYPICAL RAB rate closest to
the MBR pre-configured at the RNC, end user may find its traffic rate is
increased after the feature is enabled.
If the MBR assigned by the CN is smaller than the TYPICAL RAB rate closest to
the MBR pre-configured at the RNC, end user may find its traffic rate is
decreased after the feature is enabled.
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Page 117
Adaptive Configuration of Typical HSPA Rate: Activation

Scenario



Dependency






Hardware Dependencyz : NA
Software Dependency : Introduced in RAN14.
UE Dependency: NA
Feature Dependency
WRFD-010610 HSDPA Introduction Package;
WRFD-010612 HSUPA Introduction Package.
License Dependency
License of optional feature WRFD-030004 Adaptive Configuration of Typical HSPA Rate.
Configuration Limitation (MBR>= max(GBR，one RLC PDU/TTI) ):




Applicable only to any PS BE services, including a single PS BE service, multiple PS BE services, or the PS BE service of
combined services.
When MBR from CN is different from any TYPICAL RAB rate pre-configured in RNC.
the MBR from CN assigned to UEs with HSUPA TTI of 10 ms must be higher than 32 kbit/s;
the MBR assigned to UEs with HSUPA TTI of 2 ms must be higher than144 kbit/s.
Otherwise, these UEs cannot achieve traffic rates higher than corresponding MBRs.
Hardware Limitation

BTS3812E/E/AE series need EBBI or EBOI or EULP&EDLP or EULPd&EDLP boards ,and the downlink of cell must be
setup on EBBI or EBOI or EDLP board.

DBS3800 series need EBBC or EBBCd board，and the downlink of cell must be setup on EBBC and EBBCd board。The
BBU3806C must be with EBBM board ，and the downlink must be setup on EBBM board.

DBS3900 series need WBBPb or WBBPd or WBBPf board， and the downlink of cell must be setup on the WBBPb or
WBBPd or WBBPf board.
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Adaptive Configuration of Typical HSPA Rate: Activation
 Feature Activation
 Run the BSC6900 MML command SET LICENSE to activate the license controlling
this feature. Example:
SET LICENSE: SETOBJECT=UMTS, ISPRIMARYPLMN=YES,
FUNCTIONSWITCH5=
RNC_LICENSE_HSPA_TYPICAL_THROUGHPUT_ADAPTION -1;
 Run the BSC6900 MML command SET UCORRMALGOSWITCH to enable this
feature. Example:
SET UCORRMALGOSWITCH: PsSwitch=
HSPA_ADAPTIVE_RATE_ALGO_SWITCH -1;
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HSDPA Scheduling Based on UE Location
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HSDPA Scheduling Based on UE Location: Solution
• Differential scheduling based on CQI:
CQI=23
CQI=15
coefficient
• Current EPF: Enhanced Proportional Fair
CQI=13
scheduling gives almost same opportunity to
CQI=29
CQI=21
all UEs with same SPI weight.
• The new HSDPA scheduling algorithm based
on UE location gives more scheduling
opportunity to the UEs with good RF point, i.e. This feature gives more scheduling
opportunity to the UEs with higher CQI
higher CQI value.
• A coefficient added on scheduling priority
300
calculating, to change the scheduling
opportunity;
250
• The coefficient has a mapping relationship
with CQI. The bigger CQI value means more
200
scheduling opportunity;
Alpha=1
150
Alpha=2
• The mapping relationship has 5 grades, like
Alpha=3
α=1,2,3,4,5(α=1 points to previous EPF).
100
Alpha=4
The bigger of α value means the higher
Alpha=5
slope, accordingly stronger contrast of
50
HSDPA throughput.
0
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29
CQI
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HSDPA Scheduling Based on UE Location: Benefits
Scenario

Improve DL capacity at the cost of lower data rate for cell edge users.

Benefit




This feature improves cell HSDPA throughput by giving more scheduling opportunity to the UEs
With good RF point.
Simulation: 3 UE respectively located in Good、Medium or Bad RF point in a cell, full-buffer traffic.
The gain of cell throughput (Total in Figure above) comparing with previous EPF(Alpha=1) :
11%(Alpha=2)、21%(Alpha=3) 、33%(Alpha=4) 、38%(Alpha=5)
Impact of Network

This feature deprives much scheduling opportunity of the UEs With bad RF point, resulting
in their throughput declined to GBR if configure. So it is suggested strongly to configure
GBR for all users with PS BE service, and ensure basic experience of UEs in the edge of
cell.
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HSDPA Scheduling Based on UE Location: Activation

Dependency
Hardware
Dependency：NA
Software Dependency： Introduced in RAN14.
UE Dependency：NA
Feature Dependency
WRFD-010610 HSDPA Introduction Package;
WRFD-010611 HSDPA Enhanced Package.
License
Dependency
License of HSDPA Scheduling Based on UE Location.
• Set the following parameters to enable this feature:
[NodeB] SET MACHSPARA: SM=EPF_LOC, LOCWEIGHT= 0 (or 1,2,3)
Note: This feature deprives much scheduling opportunity of the UEs With bad RF
point, resulting in their throughput declined to GBR if config. So it is suggested strongly
to configure GBR for all users with PS BE service, and ensure basic experience of UEs
in the edge of cell.
(e.g. [RNC] SET UUSERGBR: TrafficClass=INTERACTIVE, THPClass=Low,
BearType=HSPA, UserPriority=COPPER, UlGBR=D64, DlGBR=D64; )
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Independent Demodulation of Signals from Multiple
RRUs in One Cell
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Independent Demodulation of Signals from Multiple RRUs in One Cell
• Shortage with Old version feature
½”Jumper
›
In RAN13.0, this feature operates with the
fixed setting of two-antenna RX.
›
This setting may affect uplink coverage in
indoor coverage scenarios where RRUs are
configured with single RX antennas.
RRU
RRU
• Purpose of Enhanced feature
›
In RAN14.0, Users can configure the actual
antenna number of every RRU, such as one
or two antennas.
›
NodeB process according to the configuration
value, which will get better uplink coverage
performance compare with fixed setting.
RRU
BBU
An example of multi RRUs in one cell for indoor
coverage
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Capacity for hot Site
HSPA+
Experience
Smartphone
Security
1, NodeB Integrated IPSec;
2, NodeB PKI Support
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Performance
Security
Easy Network
NodeB Integrated IPSec
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NodeB Integrated IPSec: Background
• Security risk
›
There is generally a security risk in the IP bearer network.
›
If BTS do not support IPSec, the base station data of signaling plane, user plane,
management plane is carried with clear text, the transmission packets can be easily
intercepted or tampered with.
• IPSec is required
›
IPSec is used to protect, authenticate and encrypt data flow for necessary security
between two network entities at the IP layer.
Backhaul
Core Network
IPsec Tunnel
NodeB
RNC
SeGW
M2000
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NodeB Integrated IPSec: Solution
NodeB
BSC/
RNC
SeGW
insecurity area
Security area
Ipsec tunnel
1. NodeB implements IPSec;
2. SeGW(security Gateway) is deployed between NodeB and security area;
3. NodeB establish a IPSec tunnel with SeGW across through the insecurity area;
4. IPSec tunnel isolates and protects all the traffic data transported from the insecurity
area.
›
NodeB can map all encrypted traffic according to each of the traffic types.
›
Various security policies can be applied to different data streams.
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NodeB Integrated IPSec: Benefit
• Benefit
› The privacy, integrity, authenticity of transmitted IP packets are
ensured by encryption and authentication, etc. between the
IPsec peers.
 Negative Impaction
› if the IPSec is activated, the IPSec header will be added with
50bytes, which will decrease transmission efficiency.
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NodeB Integrated IPSec: Activation
• The hardware required:
› UMPT or UTRPc.
• Activation method
step 1:NodeB updates to RAN14.
step 2:License of feature IPsec is activated.
step 3:Switch on IPsec function.
• Deactivation method
Switch off IPsec function.
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NodeB PKI Support
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NodeB PKI Support: Background
•
Digital Certificate provides an alternative method of authentication between two transport
points and improves security in network domain.
•
“ NodeB PKI Support” is based on CMPv2, supports certificate management, including
certificate application, update, abolition, CRL (Certificate Revocation List) distribution and so
on.
PKI
CRL Server/
Certificate Repository
RA/CA
MBTS
Security GW
MBTS
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OMC
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NodeB PKI Support: Solution
The certificate management of CMPv2 is in the following:
2、Identity Huawei Cert.
and issue OPKI Cert.
CRL server
DMZ
Firewall
CA
RA
1、Initiate CMPv2,carry
the Huawei Cert.
Core Network
Firewall
IPSec Tunnel
AR
NodeB
4、Replaced by OPKI Cert.
instead of Huawei Cert.
SeGW
3、Obtain OPKI Cert. by CMPv2.
5、Establish the IPsec
Tunnel with OPKI Cert.
The CMPv2 solution is suggested for IPSec certification.
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NodeB PKI Support: Activation
• Requirements:
›
›
the Operator should deploy the PKI system in the network.
PnP process is required to obtain the OPKI certificate.
• Activation method
step 1:NodeB updates to RAN14.
step 2:License of basic feature CMPv2 is activated.
step 3:Switch on CMPv2.
• Deactivation method
Switch off CMPv2.
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Capacity for hot Site
HSPA+
Experience
Smartphone
Easy Network
1, Fault Management Enhancement ;
2, Iub Transmission Resource Pool in RNC;
3, Iu/Iur Transmission Resource Pool in RNC;
4, MOCN cell resource demarcation;
5, Micro NodeB Self-Planning;
6, Intelligent Battery Management ;
7, One Tunnel (Enhanced);
8, Link aggregation (Enhaced).
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Performance
Security
Easy Network
BSC Fault Diagnosis
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BSC Fault Diagnosis(Principle)
• Purpose: help the user to find the root cause of the network
fault and locate it to specific board or subsystem.
1、List all the
scenarios
Weblmt
2、 User select the scenarios
and start analyze
5、 Upload report
OMU
Alarm
Performance
Log
4、Generate
report
Diagnosis expert system
3、using the rules to
analyze the alarm, log
and performance data
Diagnosis rules
If (Object1.GetAlarm(id)
== 0) and Object2.
GetKPI(id) == 1)
{
……
Object1.FaultAnalyze()
}
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Report
• Category network fault by scenario ,
such as CS traffic fault / CS Drop / PS
traffic fault , etc.
• Provide diagnosis rules for each
scenario
• Online diagnosis expert system using
the rules to analyze the alarm, log and
performance data, to locate the network
fault to specific board or subsystem.
• Output diagnosis report for further
analysis.
Page 138
BSC Fault Diagnosis(Benefits)
• Shorten the recovery time of network fault .
› Finish all the diagnosis work in 15 minutes.
• Shorten the downtime of the service and avoid severe
accident.
› Purpose: reduce downtime to 60 minutes.
• Reduce the workload of maintenance work.
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Enable BSC Fault Diagnosis
• Select “Fault Management
Assiatant” from WebLMT.
• In the GUI, select the
scenario of the fault.
• Select startup, and the
diagnosis report is
generated.
• View the diagnosis report
and take necessary fault
recovery step according to it.
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Iu/Iur Transmission Resource Pool in RNC
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Iu/Iur Transmission Resource Pool in RNC: Background
•
Iu/Iur IP networking before RAN14.0
MGW POOL
Router1
IPPATH
GOUc/FG2c
DIP
Subrack1
DIP
IP1
VRRP
Subrack0
xGSN POOL
IP2
Active
•
DIP
Standby
DIP
DIP
DIP
Router2
Shortage
 Transmission resource (GOUc/FG2c board, GE Port) 1+1 backup protection.
 Bad load-balance between inter-subrack boards.
 Complex IPPATHs configuration: based on every RNC IP and MGW/xGSN IP.
 RNC need to add IPPATHs and IP Routers when MGW/xGSN expanding user plane IP address.
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Iu/Iur Transmission Resource Pool in RNC (Solution1)
•
Iu/Iur Transmission Resource POOL (All active boards)
MGW POOL
Router1
GOUc/FG2c
DIP
DIP
DIP
Subrack1
IP1
xGSN POOL
Subrack0
IP2
IP POOL
•
DIP
DIP
Router2
Solution description:
 All Iu/Iur Interface boards are working as active board.
 Improved load-balance between inter-subrack boards.
 No need to add IPPATHs on RNC.
 No configuration on RNC when MGW/xGSN expanding user plane IP address.
•
Shortage : Ongoing Calls will drop when RNC interface board fault.
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DIP
Iu/Iur Transmission Resource Pool in RNC (Solution2)
•
Iu/Iur Transmission Resource POOL (with active-standby boards)
MGW POOL
Router1
GOUc/FG2c
DIP
DIP
DIP
Subrack1
IP1 IP2
xGSN POOL
Subrack0
IP3 IP4
DIP
IP POOL
Active
•
Standby
Router2
Solution description:
 GOUc/FG2c are working as 1+1 backup protection, and all GE ports are active.
 Improved load-balance between inter-subrack boards.
 No need to add IPPATHs on RNC.
 No configuration on RNC when MGW/xGSN expanding user plane IP address.
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DIP
DIP
Iu/Iur Transmission Resource Pool in RNC: Activation

Dependency

Hardware Dependency：



Software Dependency： Introduced in RAN14
Transmission requirements：




WRFD-050409 IP transmission introduction on IU interface;
WRFD-050410 IP transmission introduction on Iur interface;
License Dependency:


ETH layer 3 transmission network.
IP route available between peer end and RNC pool IP address.
Feature Dependency


RNC: GOUc/FG2c
License of Iu/Iur Transmission Resource Pool in RNC.
Deployment method
step 1:RNC software version is RAN14.0;
step 2:RNC interface board: GOUc or FG2c;
step 3:License of optional feature WRFD-140207 Iu/Iur Transmission Resource Pool in RNC;
step 4:Using ADD IPPOOL to create an IPPOOL;
step 5:Using ADD IPPOOLIP to add Iu/Iur user plane IP to IPPOOL;
step 6:Using ADD ADJNODE to create IuCS/IuPS/Iur type ADJNODE, set ISIPPOOL= “Yes”, and IPPOOLINDEX
refer to IPPOOL;
step 7:Iu/Iur CP configuration: No change.
note: Please refer to initial configuration manual for detail information.
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Iub Transmission Resource Pool in RNC
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Iub Transmission Resource Pool in RNC: background
•
Iub IP networking before RAN14.0
NodeBs
Router1
IPPATH
GOUc/FG2c
DIP
DIP
DIP
Subrack1
IP1
VRRP
Subrack0
IP2
Active
•
NodeBs
DIP
Standby
DIP
DIP
Router2
Shortage
 Transmission resource (GOUc/FG2c board, GE Port) 1+1 backup protection.
 Each NodeB connects to one pair RNC interface board.
 No Load-balance between RNC interface board automatically.
 When RNC expand GE port or GOUc/FG2c, Some NodeBs be re-homed to new GE port or
GOUc/FG2c.
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Iub Transmission Resource Pool in RNC (Solution1)
•
Iub Transmission Resource POOL (All active boards)
NodeBs
Router1
GOUc/FG2c
DIP
DIP
DIP
Subrack1
IP1
NodeBs
Subrack0
IP2
IP POOL
•
DIP
DIP
DIP
Router2
Solution description:
 All Iub Interface boards are working as active board.
 All NodeBs share the whole IP Pool Rescoure.
 No need to add IPPATHs on RNC and NodeBs.
 No NodeB re-homing is needed when RNC expanding Iub GE ports or GOUc/FG2c board.
•
Shortage : Ongoing Calls will drop when RNC interface board fault.
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Iub Transmission Resource Pool in RNC (Solution2)
•
Iub Transmission Resource POOL (with active-standby boards)
NodeBs
Router1
GOUc/FG2c
DIP
DIP
DIP
Subrack1
IP1 IP2
NodeBs
Subrack0
IP3 IP4
DIP
DIP
IP POOL
Active
•
Standby
DIP
Router2
Solution description:
 GOUc/FG2c are working as 1+1 backup protection, and all GE ports are active.
 All NodeBs share the whole IP Pool Rescoure.
 No need to add IPPATHs on RNC and NodeBs.
 No NodeB re-homing is needed when RNC expanding Iub GE ports or GOUc/FG2c board.
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Iub Transmission Resource Pool in RNC (Solution3)
•
Iub Transmission Resource POOL (with active-standby Ports)
NodeBs
Router1
GOUc/FG2c
DIP
DIP
DIP
Subrack1
IP1
Subrack0
VRRP
NodeBs
IP3
DIP
DIP
IP POOL
Active
Active Port
•
Standby
DIP
Router2
Standby Port
Solution description:
 This solution is used on upgrading scenarios where VRRP has been deployed in live network.
 From router point of view, VRRP is still used, no changes on Routers.
 From RNC point of view, two pairs of GOUc/FG2c to form a Iub transmission resource pool.
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Iub Transmission Resource Pool in RNC: Activation

Dependency

Hardware Dependency：




Software Dependency： Introduced in RAN14.
Transmission requirements：



WRFD-050410 IP transmission introduction on Iub interface.
License Dependency:


ETH layer 3 transmission network.
IP route available between peer end and RNC pool IP address.
Feature Dependency


RNC: GOUc/FG2c
NodeB: 3900 serials
License of Iub Transmission Resource Pool in RNC.
Deployment method
step 1:RNC and NodeB software version is RAN14.0;
step 2:RNC interface board is GOUc or FG2c, and NodeB hardware is 3900 series;
step 3:License of optional feature WRFD-140208 Iub Transmission Resource Pool in RNC;
step 4:Using ADD IPPOOL to create an IPPOOL on RNC;
step 5:Using ADD IPPOOLIP to add Iub user plane IP to IPPOOL on RNC;
step 6:Using ADD ADJNODE to create Iub type ADJNODE, set ISIPPOOL= “Yes”, and IPPOOLINDEX refer to
IPPOOL on RNC;
step 7:Using ADD SERVIP to add Iub user plane IP on NodeB;
step 8: Iub CP configuration: SCTP link multi-homing to RNC 2 IP address;
note: Please refer to initial configuration manual for detail information.
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MOCN cell resource demarcation
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MOCN cell resource demarcation: Background
•
Shortage with traditional MOCN
In traditional MOCN solution, cell resource is totally shared by multiple operators’ users; In some cells, it
maybe happen that one shared operator’s users occupying too much resource and the other operator’s
users has not enough resource to use.
• Purpose of MOCN cell resource demarcation
This feature provides a mechanism for defining resource allocation among operators in an MOCN cell. In
non-busy hours, each operator can use the cell resource exceeding it’s proportion; In busy hour ,each
operator’s resource usage is making towards the pre-defined percentage. This prevents the UEs of one
operator from occupying too much cell resource in a MOCN cell.
Operator A CN
MSC
Operator B CN
SGSN
OP A ：
CS erlang;
PS throughput;
MSC
RNC
SGSN
OP B ：
CS erlang;
PS throughput;
NodeB
Operator A CN
MSC
SGSN
OP A ：
CS erlang;
PS throughput
MSC
RNC
OP A ：
R99 SF code;
HSDPA power;
resource shared
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Operator B CN
OP B ：
CS erlang;
PS throughput
OP B ：
R99 SF code;
HSDPA power;
RAN14
Page 153
SGSN
MOCN cell resource demarcation solution: Solution
•
R99 DL spreading code demarcation for each
operator:
›
›
•
DL SF code for R99
Predefined proportion
Actually usage
SF code trigger CAC
Operator A
33%
30%
pre-emption
B’s user
SF code trigger LDR
Operator B
33%
50%
fail
Operator C
33%
20%
pre-emption
B’s user
First do rate
reduction,
handover
HSDPA power scheduling demarcation for each
operator:
›
›
›
•
When R99 DL SF code trigger LDR, RNC will first choose the
user of the operator whose R99 code usage exceed the
predefine proportion to do the LDR actions: BE rate reduction,
Inter-Frequency Load Handover, Inter-RAT Handover in CS
Domain;
When R99 DL SF code resource-based admission fail, the
RNC select the user of the operator whose R99 code usage
exceed the predefine proportion and execute preemption.
An Example for SF code demarcation
RNC configure the cell-level HSDPA power proportion for each
operator and inform NodeB;
In each TTI’s scheduling, NodeB adjust the scheduling priority
of the operators according to the latest period actual used and
predefined power ratio;
When power resource-based admission is failed, the RNC
select the user of the operator whose GBP usage exceed the
predefined proportion and execute preemption.
Measure and report CE\R99 codes\ HSDPA
power usage for each operator in cell level.
OP A schedule queue
Configured
proportion
Usage of latest period
40% for OP A
OP B schedule queue
60% for OP B
Next TTI increase the
priority of OP B;
An example for HSDPA power scheduling demarcation
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MOCN cell resource demarcation: Benefit
Advantage:
• In non busy hour, operator can use the cell resource exceed to pre-defined
proportion to maximize the resource usage.
• In busy hour, each operator’s resource usage will trend to the pre-defined
proportion according to the LDR,CAC, scheduling method.
Disadvantage:
• In busy hour, preemption in CAC fail may make call drop.
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MOCN cell resource demarcation: Activation
•
Activation method
step 1:RNC updates to RAN14;
step 2:License of option feature WRFD-021311 MOCN Introduction Package is activated;
step 3:License of option feature WRFD-140223 MOCN cell resource demarcation is activated;
step 3:Configure the operator’s resource usage;

ADD UCELLMOCNSFDEMAR: CellId=1, OpIndex=0, DLAvaiSFRatio=50;CellId=1, OpIndex=1, DLAvaiSFRatio=50;

ADD UCELLMOCNDPAPOWERDEMAR: CellId=1, OpIndex=0, DPAAvaiPwrRatio=40; CellId=1, OpIndex=1, DPAAvaiPwrRatio=40;
step 4: Open the MOCN demarcation preemption switch;

ADD UCELLALGOSWITCH:DemarcPreemptSwitch= MOCN_DEMARC_PREEMPT_GBP-1; MOCN_DEMARC_PREEMPT_SF-1;
step 5: Open GBP measure switch;

ADD UCELLALGOSWITCH: CellId=1, NBMCacAlgoSwitch=HSDPA_GBP_MEAS-1
Step6: Set Non-HSPA Power Threshold for GBP-based Preemption;

ADD UCELLCAC: CellId=1, NonHPwrForGBPPreemp=40;
step7: Configure SF based LDR user choose switch;

ADD UCELLALGOSWITCH: CellId=1, NbmLdcIRatUeSelSwitch=NBM_LDC_ICR_OPER_UE_FIRST;
step9: NodeB Configure power-code balance arithmetic;

•
SET MACHSPARA: SCALLOCM=POWERCODE_BAL
Deactivation method
switch off the cell-level MOCN resource demarcation license.
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Micro NodeB Self Planning
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Micro NodeB Self Planning: Background
•
•
Micro NodeB is an efficiency way to
improve the capacity and coverage for
hot sites.
›
hot spots in street, indoor, etc to absorb traffic;
›
Some weak coverage to improve performance;
②
• Plug & Play
• Self Planning
① available micro zone
SON largely improves efficiency:
›
›
Plug & Play (RAN13.0)
»
self-discovery
»
Self-configuration
»
Auto-commissioning
Micro
Macro
Self Planning (RAN14.0)
»
Auto SC and Frequency planning
»
Auto Neighbor planning
»
Auto LAC,RAC, SAC planning
Nastar (Traffic Map RAN13.0)
Micro Provision Flow
Cell
coverage
area
Network
Coverage
(Rscp /ECIO)
Coverage map
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Traffic Map
Micro NodeB Self Planning: Solution
Perform automatic
network planning
algorithm
Micro NodeB network planning procedure
Parameter list of Micro
NodeB Self planning
Start
Self
planning
Information
collection
Manual
planning
M2000
Scan result
of receiver
Pre-planning of
radio network
Configuration
Cell planning of radio
network
NodeB 1
NodeB 4
Micro NodeB
RNC
GBTS 2
GBSC
Area
planning
Frequency
planning
Scrambling
code
planning
Neighbori
ng cell
planning
LCS
planning
Micro NB 3
End
• Automatic planning: Enable the scanning function of special-purpose receiver to acquire radio
environment information and realize automatic planning of radio parameters
（frequency/Scrambling Neighboring cell /LAC/RAC/SAC） for micro NodeB based on the
automatic network planning algorithm.
• Automatic configuration: The planning parameters acquired during automatic network planning
are automatically delivered to NEs (Macro & Micro)by M2000 to realize the automatic update
of network planning parameters without manual intervention.
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Advantages
1. Reduce the cost of automatic planning of radio
parameters.
2. Planning parameters are automatically updated for
NE without manual operation to reduce the
investment.
Page43
Page
159
Micro NodeB Self Planning: Enable
• Dependency features:
›
›
›
WRFD-031101 NodeB Self-discovery Based on IP Mode
WRFD-031102 NodeB Remote Self-configuration
WRFD-WOFD-280200 NodeB auto-deployment
• Enable operation
step 1:Micro NodeB/RNC/GBSC updates to RAN14, and M2000 updates to iManager R12.
step 2:License of option feature WRFD-140219 Micro NodeB Self Planning is activated
step 3:Config the Parameter list of Micro NodeB Self planning to M2000
step4: Switch on the Micro NodeB Self Planning though the M2000 basic feature Automatic
Deployment ‘s GUI.
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Intelligent Battery Management
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Intelligent Battery Management: Solution
• Solution
› Automatic change of the battery management mode
Change battery charging mode from floating charge state to hibernation state, which helps Prolonged battery life.
Power
Estimated
Supply
Charge
current Hibernatio Hibernatio Battery
Cutoff
and
Grid Type
Life
limitation n Voltage n Duration
Duration
Discharge
(V)
(Days) Improveme
Valve
Within 15
Mode
nt Rate
Days
≤5h
5~30h
30~120h
≥120h
1
2
3
4
Mode A
Mode B
Mode C
Mode C
0.10 C
0.15 C
0.15 C
52
52
N/A
N/A
13
6
N/A
N/A
100%
50%
0%
› Battery self-protection under high temperature
When the battery temperature rises, the charging voltage of batteries is automatically adjusted or batteries are automatically powered off.
› Display of the battery runtime
After the mains supply is cut off, the base station works out the runtime of batteries based on the remaining power capacity, discharge
current, and other data.
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Intelligent Battery Management: Benefit
• Improve battery life 100% in grid type 1, 50% in grid type 2.
• Avoid battery damaged or battery life shortened in high
temperature environment.
• Arrange appropriate work before battery running out.
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Intelligent Battery Management: Activation
• Activation method
step 1: Update base station to UMTS14.0.
step 2: Active license of “Intelligent Battery Management” feature (WRFD-140220).
step 3: Configure the battery management data “BATIMS” to “ON”.
• Deactivation method
Configure the battery management data “BATIMS” to “OFF”.
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One Tunnel Enhancement for S12 interface
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One Tunnel Enhancement for S12 interface: background
UTRAN
R8-SGSN
HSS
GERAN
S3
S1-MME
S6a
MME
PCRF
S11
S10
LTE-Uu
UE
S12
S4
Serving
Gateway
E-UTRAN
S1-U
•
S5
Rx
Gx
PDN
Gateway
SGi
Operator's IP
Services
(e.g. IMS, PSS etc.)
In UMTS, the one tunnel feature provide direct tunnel between RNC and GGSN for PS service
user plane, it avoids the SGSN to be the bottleneck of the network when high PS traffic occurs.
•
In the inter-working of UMTS and LTE, the GGSN replaced by Serving Gateway + PDN Gateway,
the direct tunnel between RNC and Serving Gateway for PS service user plane is S12 interface.
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Page 166
One Tunnel Enhancement for S12 interface: solution
Solution:
•
S12 interface and one tunnel are both
complied to GTP-U. The difference is that
the target node for one tunnel is GGSN
and the target node for S12 interface is
Serving-Gateway.
IP networks
Gi
SGi
PDN GW
GGSN
Gn/Gp
SGW
S4
S11
CS Core
SGSN
Iu
S3
MME
S12
S1 UP S1 CP
RNC
eNode B
Node B
3G
LTE
Benefits:

Reducing SGSN user plane resource investment and thus reducing CAPEX and
OPEX for operators

Supporting expansion of the user plane with upgrade of only the Serving-Gateway
and the RNC , and thus improving the network expansibility
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One Tunnel Enhancement for S12 interface: Activation
• Activation method
step 1: Active the license.
SET LICENSE: SETOBJECT=UMTS, OperatorType=PRIM, FUNCTIONSWITCH4=ONE_TUNNEL-1;
step 2: Add the Serving-Gateway node.
ADD ADJNODE: ANI=0, NAME="S-GW NAME", NODET=IUPS, TRANST=IP, ISIPPOOL=NO,
SGSNFLG=NO;
Step 3: Add the user plane path and the IPPATH to S-GW.
ADD IPPATH: ANI=0, PATHID=1, ITFT=IUPS, PATHT=BE, IPADDR="80.1.1.1", PEERIPADDR="10.161.0.1",
PEERMASK="255.255.255.0", TXBW=1000, RXBW=1000
Step 4: Add the routing to S-GW.
ADD IPRT: SRN=0, SN=14, DSTIP="10.161.0.1", DSTMASK="255.255.255.0", NEXTHOP="80.1.1.10",
PRIORITY=HIGH, REMARK="TO S-GW ROUTE";
• Deactivation method
step 1: Deactive the license.
SET LICENSE: SETOBJECT=UMTS, OperatorType=PRIM, FUNCTIONSWITCH4=ONE_TUNNEL-0;
step 1: Delete the Serving-Gateway node.
RMV ADJNODE: ANI=0;
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Link Aggregation Enhancement
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Link Aggregation Enhancement
NodeBs
PTN 1
GOUc/FG2c
Subrack1
Subrack0
IP1
LAG-1
NodeBs
LAG-2
IP2
PTN 2
•
Shortage of RAN13 LAG
 When using LAG, IPPM cannot be supported. Therefore, RNC/NodeB cannot detect the
packet loss on Iub interface.
 When manual LAG is working on active-Standby, BFD/ARP cannot bind to LAG
switchover.
•
Enhancement of RAN14 LAG
 When LAG is working on active-standby, IPPM can be supported. Therefore, RNC/NodeB
can detect the packet loss on Iub interface.
 When manual LAG is working on active-Standby, BFD/ARP can bind to LAG switchover.
BFD/ARP can detect the soft-fault that physical link can not found.
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THANK YOU
www.huawei.com
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