Security Level:
UL Spectrum sharing based on DCHSDPA Solution
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Contents

1. UL Spectrum sharing based on DC-HSDPA Solution Introduction

2. Spectrum Design

3. Hardware Reconstruction Requirements

4. Site Selection

5. Feature Dependency

6. Feature Deployment

7. Use Guidelines
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1 Solution Introduction-UL Spectrum sharing based
on DC-HSDPA
Challenge: traditional
refarming not satisfy traffic
evolution perfectly
spectrum
3U
UMTS Traffic Loss
UL Spectrum sharing based on DC-HSDPA
U10+L10@15MHz
LTE
UMTS Downlink 100% share to LTE
15MHz
2U
UMTS1
1U
UMTS2’
LTE
DC-HSDPA
UE
U 10MHz
UMTS
Scenario 1，
U capacity > 1 carrier
Time
Scenario 2，
U capacity ≤ 1carrier
UMTS DC main carrier
L10MHz
UMTS
LTE
+40%~50% vs U5MHz +90% vs L5MHz
UMTS DC second carrier，only for DCHSDPA service
Pre-condition
Traditional
refarming
UMTS traffic loss
Refarming
on-demand
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Total Bandwidth ≥ 15MHz 2 U required traffic 3 More LTE
（if U1=4.2MHz，then total
>1 Carrier
spectrum required
BW≥14.6MHz）
for better LTE
experience
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2 Spectrum Design
19.8M Sharing 5M UL Spectrum sharing based on DC-HSDPA
2135.1M
NOW：2U or 1U+1L in UL 0 Bufferzone area
2130.1M
10663
2140.1M
1.03M
1.63M
10688
2U
2132.6M
2135.1M
2136.73M
2137.6M
2139.07M
324
10663
4.6M
1U+1L
2132.6M
2134.9M
2130.1M
0123456789 11111111112222222222333333333344444444445555555555666666666677777
01234567890123456789012345678901234567890123456789012345678901234
2149.9
2142.4M
2U+1L UL Spectrum sharing based on DC-HSDPA
10M
2.5M
2.3M
4.6M
BASELINE
349
10688
10663
4.6M
2132.6M
2130.1M
2137.4M
2134.9
0123456789 11111111112222222222 33333333334444444444
01234567890123456789 01234567890123456789
2.5M
324
10688
10663
5M
4.6M
AFTER
2149.9
2144.9M
2132.6M
0123456789 11111111112222222222 333333333344444444445555555555666666666677777
01234567890123456789 012345678901234567890123456789012345678901234
2130.1M
2142.4M
2137.4M
2134.9M
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15M
LTE Downlink available RBs：0-74
LTE uplink available RBs：0-74
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2149.9
3 Hardware Reconstruction Requirements
Category
Site name
UMTS site
(original UL 0
Bufferzone
UMTS site)
GUL-U-96D
GUL-U-98B
Version
UMPT
UBBP
RRU/RFU
Optical
module
15.1
Satisfied
UBBPe4(UO)>UBBPe4(U*L)
Satisfied
一线核查
UMTS：ACT 1 UMTS CELL，
LTE：ADD 3 LTE CELL
YES
15.1
Satisfied
UBBPd3(0-0-3)>UBBPe4
Satisfied
一线核查
UMTS：ADD 3 UMTS CELL，
LTE：ADD 3 LTE CELL
YES
15.1
Satisfied
UBBPe4(UO)>UBBPe4(U*L)
No change-have
changed
一线核查
UMTS：ACT 1 UMTS CELL and
decrease 3 UMTS cell power to
430
LTE：add 3 LTE CELL
YES
15.0，Need to
be upgraded
Satisfied
UBBPei(LO)>UBBPei(U*L)
WBBP->UBBP
（0-0-3）
Satisfied
一线核查
UMTS：ACT 3 UMTS CELL
LTE：Disable UL 0 bufferzone，
LTE refarming 15M->10M，
DlEarfcn 324->349
YES
15.1
Satisfied
Satisfied
Satisfied
一线核查
UMTS：ADD 3 UMTS CELL
LTE：Disable UL 0 bufferzone，
LTE refarming 15M->10M，
DlEarfcn 324->349
YES
15.1
Satisfied
Satisfied
Satisfied
一线核查
UMTS：ACT 3 UMTS CELL
LTE：Disable UL 0 bufferzone，
LTE refarming 15M->10M，
DlEarfcn 324->349
YES
LTE：Disable UL 0 bufferzone，
LTE refarming 15mM->10M,
DlEarfcn 324->349
NO
GUL-U-117
LTE site
(original UL 0
Bufferzone
LTE site)
GUL-U-068
GUL-U-897
GUL-U-895
GUL-U-177
15.0
3 RRU not support UL SDR
Cell adjustment
UL0
DC
1. One baseband boards are added, three baseband boards are reconstructed.
2. Disable the UL0Bufferzone feature for seven sites.
3. UMTS10688 cells are activated at four sites, and UMTS10688 cells are added to the two sites. LTE cells are added to
three sites, and LTE cells are replanned for four sites.
4.UMTS 10688 need change to10687.
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4. Site Selection
Site
UMTS
ONLY
LTE
Site name
UMTS Frequency
LTE
LTE
Frequency bandwidth
GUL-U-96D
10663&10688
NA
NA
GUL-U-98B
10663&10688
NA
NA
GUL-U-117
10663&10688&10713
&10737
NA
NA
GUL-U-068
10663&10688
324
15M
GUL-U-897
10663&10688
324
15M
GUL-U-895
10663&10688
324
15M
RNC
board
UBBP Change To
UMPTb
UBBPe4
1
UMPTb
ORH02 GTMUc
UBBPd3
1
UMPTe
ORH02 GTMUb
UBBPe4
1
UMPTb
ORH02 GTMUb
UBBPd3
1
UMPTe
ORH02 GTMUb
UBBPe4
1
UMPTb UBBPe4、
ORH02 GTMUb
1
UBBPe1
ORH02 GTMUb
RRU38
39
RRU38
39
RRU55
02
MRFU
V6
MRFU
V6
RRU55
02
no need
no need
no need
no need
no need
no need
We need to do in this area:
1. Close the UL 0 bufferzone solution firstly;
2. In UMTS Bufferzone area sites, add 10M LTE in Green area;
3. In LTE Bufferzone area sites, Change the bandwidth of 15M LTE to 10M in Red area and act UMTS cell 10688;
4. Open DC-HSDPA switch of UMTS cells;
5. After the Baseline test, we change 10M LTE to 15M and open UL Spectrum sharing based on DC-HSDPA in Beta area;
6. Beta test.
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5 Feature Dependency –Specifications and
Hardware Constraints
Hardware
Requirement
Main control boards
• UMPT
Baseband boards
• UBBP
RF modules
(RRUs/RFUs/AAUs)
•RFUs/RRUs
All RFUs or RRUs supporting LTE or UMTS, excluding the LRFU, MRFU V1, MRFU V2, MRFU
V2a, RRU3203, RRU3801C, RRU3801E, RRU3804, RRU3805, RRU3806, RRU3808, RRU3908
V1, RRU3908 V2, and WRFU
•AAUs
AAU3910, AAU3911, AAU3920, AAU3940, AAU3961, and AAU5940
Antenna specifications
Base station types
• LTE:1T1R、2T2R、2T4R、4T4R
• UMTS:1T1R、1T2R
3900 series base stations and 5900 series base stations
Note：
•UMTS: The downlink services of cells must be set up on a UBBP or BBU3910A. Uplink access resources
cannot be set up on a WBBPa.
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Feature Dependency -License
RAT
LTE
License Control Item
Model
Sales Unit
UMTS and LTE Spectrum Sharing (LTE FDD) (per Cell)
LT1SULSSBODH
Per Cell
RF Spectrum Sharing License (FDD)(per Band per RU)
LT1SRFSPCS00
Per Band Per RU
Spectrum Sharing License for 5000 Series RF Module (FDD)(per Band per RU)
LT1S5000RFSS
Per Band Per RU
UMTS and LTE Spectrum Sharing Based on DC-HSDPA (UMTS)
LQW9DCDPASL01 Per Cell
UMTS RF spectrum sharing license (UMTS)
LQW9RFSSH01
Spectrum sharing license for 5000 series RF modules (UMTS)
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Per Band Per RU
Per Band Per RU
Feature Dependency – Mutually Exclusive Functionson the LTE Side
Function Name
Function Switch
Short TTI
Massive MIMO Introduction
GSM and LTE Buffer Zone Optimization
CellShortTtiAlgo.SttiAlgoSwitch
N/A
AvoidGeranInterfSwitch option of the
CellAlgoSwitch.AvoidInterfSwitch parameter
GLZeroBufferZoneSwitch option of the
CellAlgoSwitch.DynSpectrumShareSwitch
parameter
GLDynSpectrumShareSwitch option of the
CellAlgoSwitch.DynSpectrumShareSwitch
parameter
GL_SPECTRUM_CONCURRENCY option of the
SpectrumCloud.SpectrumCloudSwitch parameter
AvoidUtranInterfSwitch option of the
CellAlgoSwitch.AvoidInterfSwitch parameter
LTE_NR_UPLINK_SPECTRUM_SHR option of the
SpectrumCloud.SpectrumCloudSwitch parameter
AvoidCDMAInterfSwitch option of the
CellAlgoSwitch.AvoidInterfSwitch parameter
Cell.CustomizedBandWidthCfgInd
N/A
GSM and LTE Zero Bufferzone
GSM and LTE FDD Dynamic Spectrum Sharing
GSM and LTE Spectrum Concurrency
UL Refarming Zero Bufferzone
LTE FDD and NR Uplink Spectrum Sharing
CDMA and LTE Zero Bufferzone
Compact Bandwidth
Flexible Bandwidth based on Overlap Carriers
Reference (eRAN Feature Parameter Description
Document)
Short TTI (FDD)
Massive MIMO (FDD)
GSM and LTE Buffer Zone Optimization
GSM and LTE Zero Bufferzone
GSM and LTE FDD Dynamic Spectrum Sharing
GSM and LTE Spectrum Concurrency
UL Refarming Zero Bufferzone
LTE and NR Spectrum Sharing
CDMA and LTE Zero Bufferzone
Compact Bandwidth (FDD)
Flexible Bandwidth based on Overlap Carriers (FDD)
ePDCCH
EpdcchFunctionSwitch option of the
Physical Channel Resource Management
CellPdcchAlgo.EpdcchAlgoSwitch parameter
RF Channel Intelligent Shutdowna
CellRfShutdown.RfShutdownSwitch
Energy Conservation and Emission Reduction
SFN cella
Cell.MultiRruCellMode
SFN
Service guarantee for UEs running unlimited
UsUeGuaranteeSwitch option of the
N/A
servicesa
CellUSParaCfg.UsAlgoSwitch parameter
On-Demand TX Power Allocation Under EMEa
PDSCHCfg.EmfPowerLimitSwitch
On-Demand TX Power Allocation Under EME
Static shared beam
N/A
Massive MIMO (FDD)
Dynamic dedicated beam
N/A
Massive MIMO (FDD)
a: After this function is enabled, if the PDSCHCfg.CellPowerLimit parameter is set to an above-zero value to limit the maximum transmit power of a single RF
channel for an LTE cell, the maximum transmit power limitation function is mutually exclusive with RF Channel Intelligent Shutdown, SFN cell, service
guarantee for UEs running unlimited services, and On-Demand TX Power Allocation Under EME.
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Feature Dependency – Mutually Exclusive Functions
on the UMTS Side
Function Name
Function Switch
Reference
Independent Demodulation of Signals from
Multiple Small Cell RRUs in One Cell
N/A
Independent Demodulation of Signals from Multiple Small Cell
RRUs in One Cell
Extended Cell Coverage up to 200km
N/A
Extended Range
Transmit Diversity
UCELL.TxDiversityInd or ULOCELL.TTW
TX Diversity and RX Diversity
Independent Demodulation of Signals from
Multiple RRUs in One Cell
N/A
Multiple RRUs in One Cell
Cell Digital Combination and Split
N/A
Multiple RRUs in One Cell
0.5/0.5 configuration mode
ULOCELL.LOCELLTYPE
Multiple RRUs in One Cell
UMTS 4T Beam Optimization
ULOCELL.BFMODE
UMTS 4T Beam Optimization
UMTS Massive Beam 8T8R
ULOCELL.BFMODE
Massive Beam
Intelligent 2T VAM
ULOCELL.INTEL2TVAM
Intelligent 2T VAM
HSUPA FDE
ULOCELL.FDEMODE
Frequency Domain Equalization
Dual Carriers over Narrowband
ULOCELL.DLASYMFILTER
Dual Carriers over Narrowband
Hitless Cell Rehoming
NODEBALGPARA.DLAUTORESHUFFLESW
Hitless Cell Rehoming
ULOCELL.UL0BUFFERZONE
UMTS and LTE Zero Bufferzone
ULOCELL.ULSPECTRUMSHARINGPHASE2
UMTS and LTE Spectrum Sharing
ULOCELLMACHSPARA.SECCELLACTDEASW
Traffic-Based Activation and Deactivation of the
Supplementary Carrier In Multi-carrier
UMTS and LTE Zero Bufferzone
UMTS and LTE Spectrum Sharing Phase
2a
Traffic-Based Activation and Deactivation of the
Supplementary Carrier In Multi-carriera
a: Traffic-Based Activation and Deactivation of the Supplementary Carrier In Multi-carrier cannot be enabled in the primary cell.
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6 Feature Deployment – Deployment Requirements
•UMTS secondary cells and LTE cells must be deployed in 1:1 co-site and co-coverage
mode.
•It is recommended that the Power Spectral Density (PSD) of the UMTS secondary cells be
equal to that of the LTE cells.
•This function can be enabled on either of the following:
◾Specific areas of the network
A buffer zone must be planned to prevent co-channel interference between UMTS and LTE.
The method for planning the buffer zone is the same as that for planning the buffer zone
in UMTS and LTE refarming scenarios. During buffer zone planning, operators must
consider the spectrum resources of both radio access technologies (RATs). For more
information, contact Huawei engineers.
◾Entire network
No buffer zone is required.
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7 Use Guidelines – Activation
• LTE Side
• Deactivate LTE cells, and perform the following operations to configure related parameters before reactivating these cells.
//Binding a cell that requires this function to a baseband processing board supporting this function
ADD EUCELLSECTOREQM: LocalCellId=0, SectorEqmId=1, BaseBandEqmId=12;
//(Optional) Reconfiguring the LTE center E-UTRA absolute radio frequency channel number (EARFCN) and bandwidths if necessary
MOD CELL: LocalCellId=0, DlEarfcn=3600, DlBandWidth=CELL_BW_N50, UlBandWidth=CELL_BW_N50;
//Configuring the RBs reserved for LTE (range of available RBs). The following uses the RB configuration in a 10 MHz LTE bandwidth scenario as an
example.
ADD ULSPECTRUMSHRCONFIG: ULSpectrumSharingConfigId=0, PrbRsvType=LTE_DL_AVAILABLE_PRB, LtePrbStartIndex=0, LtePrbEndIndex=49;
ADD ULSPECTRUMSHRCONFIG: ULSpectrumSharingConfigId=0, PrbRsvType=LTE_UL_AVAILABLE_PRB, LtePrbStartIndex=0, LtePrbEndIndex=49;
ADD ULSPECTRUMSHRCONFIG: ULSpectrumSharingConfigId=0, PrbRsvType=LTE_DL_HIGH_PRIORITY_PRB, LtePrbStartIndex=0,
LtePrbEndIndex=24;
//Enabling UMTS and LTE Spectrum Sharing Based on DC-HSDPA
ADD SPECTRUMCLOUD: LocalCellId=0, SpectrumCloudSwitch=DC_HSDPA_BASED_UL_SPECTRUM_SHR, DlCchSendStrategy=ADAPTIVE,
ULSpectrumSharingConfigId=0;
//Configuring the PRACH frequency offset policy
MOD RACHCFG: LocalCellId=0, PrachFreqOffsetStrategy=FULLY_AUTOMATIC;
//Configuring the SRS ACK/NACK simultaneous transmission policy
MOD SRSCFG: LocalCellId=0, AnSrsSimuTrans=BOOLEAN_TRUE;
//Setting the non-standard bandwidth algorithm switch, PUCCH resource adjustment switch, and maximum transmit power switch for cells using a nonstandard bandwidth in the downlink
MOD CELLALGOSWITCH: LocalCellId=0, PucchAlgoSwitch=PucchSwitch-1, NonStandardBwAlgoSw=PCFICH_POWER_OPT_SWITCH1&PDCCH_POWER_OPT_SWITCH-1, DlPcAlgoSwitch=DlNonStandardBwMaxPwrSwitch-1;
//Setting RptCqiFltInitSwitch, AdaptiveStepVarySwitch, and PreciseMcsAdaptSwitch
MOD CELLALGOSWITCH: LocalCellId=0, CqiAdjAlgoSwitch=RptCqiFltInitSwitch-1&AdaptiveStepVarySwitch-1&PreciseMcsAdaptSwitch-1;
• UMTS Side
//Activating UMTS and LTE Spectrum Sharing Based on DC-HSDPA (UMTS) and configuring the co-site co-coverage LTE cell
MOD ULOCELL: ULOCELLID=14601, LOCELLTYPE=NORMAL_CELL, DCHSDPASHAREDWITHLTE=DYNAMICBANDWIDTH, COCOVERLTECI=1,
COCOVERLTESECTORID=65536;
//(Optional. This operation is required when the secondary cell is configured as a neighboring cell on an adjacent RNC) Configuring the DC-HSDPA
sharing with LTE flag
MOD UEXT3GCELL: NRncId=9, CellId=14601, DCHSDPAShareWithLTEFlag=TRUE;
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Use Guidelines –Deactivation
•
LTE Side
•
Deactivate LTE cells, and perform the following operations to configure related parameters before reactivating these cells.
//Turning off the non-standard bandwidth algorithm switch and PUCCH resource adjustment switch
MOD CELLALGOSWITCH: LocalCellId=0, PucchAlgoSwitch=PucchSwitch-0, NonStandardBwAlgoSw=PCFICH_POWER_OPT_SWITCH0&PDCCH_POWER_OPT_SWITCH-0;
//Disabling UMTS and LTE Spectrum Sharing Based on DC-HSDPA
MOD SPECTRUMCLOUD: LocalCellId=0, SpectrumCloudSwitch=OFF;
//(Optional) Modifying the LTE cell downlink EARFCN, uplink bandwidth, and downlink bandwidth as required
MOD CELL: LocalCellId=0, DlEarfcn=3600, DlBandWidth=CELL_BW_N25, UlBandWidth=CELL_BW_N25;
•
UMTS Side
//Deactivating UMTS and LTE Spectrum Sharing Based on DC-HSDPA (UMTS)
MOD ULOCELL: ULOCELLID=14601, LOCELLTYPE=NORMAL_CELL, DCHSDPASHAREDWITHLTE=NOTSUPPORT;
//(Optional) Deactivating the secondary cell (This operation is required when the function deactivation on the LTE side involves the modification of
the downlink EARFCN and the uplink and downlink bandwidths, to avoid interference to LTE.)
DEA UCELL: CELLID=14601;
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Use Guidelines – Activation observation

Activation observation of LTE side
Counters for measuring the downlink capacity of LTE cells：
Counter
Calculation Formula
Downlink capacity of LTE cells

L.ChMeas.PRB.DL.Avail x ((L.Traffic.DL.SCH.QPSK.TB.bits +
L.Traffic.DL.SCH.16QAM.TB.bits +
L.Traffic.DL.SCH.64QAM.TB.bits +
L.Traffic.DL.SCH.256QAM.TB.bits)/L.ChMeas.PRB.DL.Used.A
vg/Traffic statistical period/1000000)
Activation observation of UMTS
If both of the following conditions are met, the function has been activated:

The value of the VS.HSDPA.DC.SEC.UE.Mean.Cell counter on the RNC is greater than zero.

The value of the VS.ULFreShared.CombFilter.Bandwidth.Mean counter on the NodeB is greater than zero.
After this function is enabled, observe the values of the following counters to determine the capacity decrease of the UMTS secondary
cell:

Number of TTIs in which scheduling is disallowed due to spectrum sharing for cell:
VS.HSDPA.NotAllowSchedule.FreqShare•Average single HSDPA UE throughput:
VS.HSDPA.DataOutput.Traffic/(VS.HSDPA.DataTtiNum.User x 2)

Average single DC-HSDPA UE throughput: VS.DataOutput.DCHSDPA.Traffic/(Sum of VS.DCHSDPA.DataTtiNum.User values of
the primary and secondary carriers on the sector x 2)

Average throughput of an HSDPA cell: VS.HSDPA.DataOutput.Traffic/[(VS.DataTtiRatio.Mean –
VS.HSDPA.InactiveDataTtiRatio.Mean) x Statistical period x 60]
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Thank you
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Copyright©2011 Huawei Technologies Co., Ltd. All Rights Reserved.
The information in this document may contain predictive statements including, without limitation,
statements regarding the future financial and operating results, future product portfolio, new technology,
etc. There are a number of factors that could cause actual results and developments to differ materially
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information at any time without notice.