GUL Interoperability
Overview
www.huawei.com
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Objectives

Upon completion of this course, you will be able to:

Describe GUL Interoperability Networking Strategy

Understand GUL Interoperability Networking Strategy

Outline GUL Interoperability Performance Estimation

Know Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page2
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page3
LTE Network Challenges
Maturity Bottleneck
Risk of Customer Experience
• Lack of End to End Solution
• Voice & SMS on LTE
Provider
• Seamless Handover between
• Lack of Network Deployment
G/U/L
Experience
• Terminals
LTE
Challenges
Profit-Oriented Approach
Economical LTE Rollout
• Flexible Site Solution
• Cost-effective Backhaul Solution
• Easy O&M
• Service Innovation Create
Customer Value
• Flexible Third Party Cooperation
Mechanism
LTE is the future, but opportunities always stay with challenges
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page4
Operator’s Main Concerns
 Impact
of LTE
introduction
 Ecosystem’s
Spectrum

Technology selection for
different services;
Change on existing NE.
UE
maturity
availability;
availability;
Data
service first.
GSM/UMTS/LTE
Interoperability
 Efficiency
of investment
 High
Focus
on hotspot and dense
urban in initial phase.
end user experience
QoE
of new LTE subs;
Service
continuity and
diversity.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page5
Function Requirement for Interoperability
from Operators
The Best Service Experience

Ensure Service Continuity

Try to receive data services as
far as possible in LTE so as to
get the best business
GSM/UMTS is required to
compensate the lack of LTE
coverage
experience
Reasonable Inter-system
Service/Load-sharing

GSM/UMTS provide voice service to make up the
deficiency of LTE service type


Minimum Influence

Impose the minimum influence
Make use of GSM/UMTS to share the load of LTE
on networks and subscribes
service
during network upgrading
Make UEs in low data service rate handover to
GSM/ UMTS system, raising GSM/UMTS system
utilization ratio and, exerting LTE high-speed data
service advantage
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page6
Performance Requirements for
Interoperability from Operators

Require High Speed Service

reasonably
Experience

Set IRAT parameters
Service experience trend：
LTE > UMTS > GSM

Performance
…
Requirements

Avoid IRAT ping-pang
handover/reselection
Satisfy KPI

IRAT Interoperability success rate

IRAT Interoperability time delay
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page7
LTE Deployment Strategy
Hot spot / Dense Urban
in initial phase
Urban / Rural
in expanding / mature phase

Limited spectrum options

More spectrum available

Mainly dedicated for data service

Convergent PS Core

Independent EPC to minimize impact on CN

Load sharing strategy

Keep service continuity via 2G/3G network

Service based mobility

No impact on the stability of 2G/3G network

Enhance Network performance and end
user experience
Enable seamless service experience between LTE and G/U systems
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page8
Connected state
Network interworking design
Seamless Mobility
Best QoS
L1800
Continuous
service
U2100
Load balance
U900/850
Idle state
L1800
IDLE
Camp/Cell
Selection
U2100
Cell
Reselection
U900/850
Handover/R
edirection
Data
Service
Continuity
CONNE
CTED
Voice
Service
Continuity
GSM900/1800
CCO
CS Fall
Back
SRVCC
• Reselection
• Camp on high priority
techonology first(LTE with
the highest priority in
default situation);
• Camp on low priority
technology by coverage
based reselection
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
GSM900/1800
• Handover based on coverage（CS
handover/PS Cell change）
• Handover based on coverage（CS
handover/PS Cell change）(U900
edge area)
• PS reselection based on coverage
(G->U)
• Inter-Freq handover based on
coverage( UMTS center)
• Dual Inter-Freq handover based on
coverage （U900 edge area)
• CSFB（L->U，L->G)
• PS handover/CCO/redirection based
on coverage（L->U，L->G)
• PS handover/redirection based on
service（U->L)
Page9
(GUL Scenario)
Two Optional Network Structures for
Interworking (Gn/Gp, S3/S4)
Lu-CS
Interfaces for GSMBTS
S3/S4 structure
BSC
Interfaces for
Gn/Gp structure
Gb
Affected NE while
implementing
LTE
S12
UMTS NodeB
To MME
S10
MSC/
VLR/eMSC
SGSN
Lu-PS
RNC
A
To Foreign
PLMN
Gp
S3 Gn
MME
S1-MME
Gn
S4
Gr
S6a
HSS
S11
S1u
SGW
LTE TDD/FDD eNodeB
Advantage of Option 1: Gn/Gp (GTP V1)
• Fast to market.
• Connect to the EPC with only minor change to
installed network.
• Implement Gn/Gp structure in the first phase of LTE
deployment.
• NE: GGSN should be upgraded or replaced or
integrated with PGW.
• Gn/Gp is the most applied structure due to legacy
2G/3G version.
SGs
Proxy
SGs/Sv
S8
S5
GGSN/
PGW
To Foreign PLMN
SGi
IP Services
e.g. IMS,
PSS, etc
Advantage of Option 2: S3/S4 (GTP V2 )
• Simple architecture
• PCC, E2E QoE and GTP V2 is introduced.
• This architecture will deployed when LTE
services obviously increased.
• NE: SGSN, GGSN, MSC needs to be
upgraded.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page10
GUL Interworking Procedure with Scenes
Access
Flow
Routing
Area
Update
GnGp
SGSN
Tracking
Area
Update
Handover
Flow Scenario
Trigger Scenario
Protocol reference
MME to Gn/Gp
SGSN Routing
Area Update
• Cell reselection, PLMN
reselection
•RRC Release and redirection
•Cell Change Order
•Cell Change Order with NACC
3GPP TS23.401
section Appendix D
3GPP TS23.401
section 5.6
Gn/Gp SGSN to
MME Tracking
Area Update
•Cell reselection, PLMN
reselection
•RRC release and redirection
• TCH/SDCCH release and
redirection
•Cell Change Order
•Cell Change Order with NACC
3GPP TS23.401
section Appendix D
3GPP TS23.401
section 5.6
MME to Gn/Gp
SGSN handover
• Cover Based, loading based,
service based (CSFB&SRVCC)
3GPP TS23.401
section Appendix D
Gn/Gp SGSN to
MME handover
• Cover Based, loading based
3GPP TS23.401
section Appendix D
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page11
GUL Interworking Procedure with Scenes
Access
Flow
Tracking
Area
Update
S4
SGSN
Routing
Area
Update
Handover
Flow Scenario
Trigger Scenario
Protocol reference
E-UTRAN
Tracking Area
Update
• Cell reselection, PLMN
reselection,
• RRC Release and redirection.
• Cell Change Order.
• Cell Change Order with NACC
3GPP TS23.401
section 5.3.3,5.6
3GPP TS23.401
section 5.3.3,5.6
UTRAN/GERAN
Routing Area
Update
• Cell reselection, PLMN
reselection,
• RRC release and Redirection
• TCH/SDCCH Release and
Redirection
• Cell Change Order
• Cell Change Order with NACC
E-UTRAN to
UTRAN/GERAN
Inter
RAT handover
• Cover Based, loading based,
service based (CSFB&SRVCC)
3GPP TS23.401
section 5.5.2
UTRAN/GERAN
to E-UTRAN Inter
RAT handover
• Cover Based, loading based
3GPP TS23.401
section 5.5.2
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page12
Standard of Interworking Progress
R11
R10
R9
R8
EPC, LTE TDD/FDD
Defined
GUL,TDSL,CL
Interworking Defined
VoLTE;
CSFB, SRVCC
eCSFB
(Flash CSFB)
GUL TL eSRVCC
GUL TL aSRVCC
2011
2009
2008
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page13
GUL TL rSRVCC
OSCAR
VoLTE Roaming
CL MOCN IWK
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
2.1 Interoperability Networking Requirement Overview from Operators
2.2 Interoperability Networking Scenarios and Strategies
3. GUL Interoperability Solution
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page14
Operator Requirements Overview for
Interoperability Networking
GL
Networking

Germany TMO: Legacy network:GSM900 and UMTS2100, plans to launch
a LTE network in 800M and 1800M respectively，UMTS completely
disappears, therefore forming GL Network scenario.

Canada Bell/Telus：Continously coverage areas via UMTS850 and UMTS1900 , plan to
introduce LTE to co-existed expansion building, therefore forming UL Network
scenario.

UL
Networking
HongKong Genius：MOCN of HUT and PCCW. Legacy network: UMTS system
respectively owned by HUT and PCCW.

Singapore M1：Current GSM1800 exits to provide 10M available for LTE, and last GSM
completely disappears, thereby considering UL Network scenario.

Japan eMobile：currently there are two carriers available for UMTS, 10M available for
LTE. Plans to provide 5M of UMTS for LTE via refarming so as to form UL Network
scenario.
GUL
Networking

Sweden N4M ：LTE possibly uses 2600/1800/800，UMTS occupies
2100/900，GSM 1800/900, existed UMTS can not form continuous
coverage areas, so GUL Network scenario appears.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page15
Interoperability General Strategy(1/2)

Preferentially camp on LTE frequency band

Reselect and handover from LTE edge area to GU network

Before deploying VoIP，voice call falls back to GU network via
CSFB strategy

Reduce the difficulty of LTE configuration via a brief and efficient
strategy. Via existed GU interoperability strategy, LTE can
interoperate with one of GU frequency bands( or carriers) .
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page16
Interoperability General Strategy(2/2)
LTE
CSFB
G/U/T(Data)
Camping by default
Camping by default
Reselection
LTE
Redirection
G/U/T(Voice)
VoLTE
SRVCC
G/U/T(Data)
Reselection
Redirection
PSHO
G/U/T(Voice)
Load Balance
Phase 1: LTE Initial Deployment with Limited
Coverage & subscribers in hotpot/dense urban
•
LTE Mainly dedicated for data service
•
Voice Service Continuity via CSFB to 2G/3G
network
•
•
Use PS handover for inter-RAT
switching
•
Keep service continuity via 2G/3G network by
coverage based Interworking
•
Phase 2 and after: LTE with expanded
Coverage & more subscribers in urban/rural
Introduce VoLTE, voice continuity with
2G/3G via SRVCC
•
Load balance between LTE and 3G/2G
Load balance within LTE
Different interoperability strategies are adoptable in various LTE deployment phases
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page17
GL Networking Strategy（1/2）
Idle Mode
1）Camping priority: LTE > GSM
2）Support cell reselection between
LTE and GSM

1）Supports LTE-> GSM coverage-based handover
2）Supports LTE-> GSM handover types：PSHO, SRVCC,
CCO/NACC, Redirection.


CCO/NACC and Redirection are suitable for PS, which
requires low time delay;
Supports GSM ->LTE reselection
when moving into LTE coverage
PSHO can ensure PS continuity before and after
handover;
Supports LTE->GSM reselection at
the edge of LTE network;

Connection Mode

VoIP is deployed in LTE not in GSM, so SRVCC is
used to handover VoIP to GSM CS domain;
area.

In GSM connection mode, UE does not support inter-
RAT measurement, then it will adaptively adopt
handover without measurement which need configure
blind priorities of neighbour cells of GSM cells
3）Quick redirection, NACCor Flash CSFB. It requires
network side to support RIM procedure
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page18
GL Networking Strategy（2/2）
Voice Solution
Load Control and service steering
1）Before LTE supports VoIP, Voice service falls back to
1）Supports LTE-> GSM loadcontrol-based redirection

GSM via CSFB

In GSM connection mode, UE does not support
inter-RAT measurement, then it will adaptively uses
Redirect UE to GSM when
CSFB without measurement which need configure
overload occurs in a cell
blind priorities of neighbour cells of GERAN cells
2）Supports LTE-> GSM loadbased handover

Let certain services with a
specifics QCI (such as VoIP)
fall back to GSM

In case of unspecific GSM handover function
supported by the network and UEs, only enable the
switch of redirection.
2）If VoIP is deployed in LTE not in GSM, SRVCC is
applied at the edge of LTE network so as to handover
voice service to GSM CS domain.
3） If VoIP is deployed in both LTE and GSM, PSHO is
adopted at the edge of LTE network so as to
handover VoIP service to GSM network.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page19
UL Networking Strategy（1/2）
Idle Mode
1） Camping priority: LTE > UMTS
Connection Mode
1） Supports LTE-> UMTS coverage-based handover
2） Supports LTE-> UMTS handover types: PSHO，SRVCC，
2） Support cell reselection between
LTE and UMTS



Redirection is suitable for PS, which requires low delay;

VoIP is deployed in LTE not in UMTS, so SRVCC is
Supports UMTS ->LTE reselection
when moving into LTE coverage area.
PSHO can ensure PS continuity before and after
handover;
Supports LTE-> UMTS reselection at
the edge of LTE network;

Redirection 。
used to handover VoIP to UMTS CS domain;

In UMTS connection mode, UE does not support interRAT measurement, then it will adaptively adopt
handover without measurement which need configure
blind priorities of neighbour cells of UMTS cells
3） Quick redirection and flash CSFB. It requires network side
to support RIM procedure
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Page20
UL Networking Strategy（2/2）
Load Control and service steering
1） Supports LTE-> UMTS load-controlbased redirection

Redirect UE to UMTS when overload
Voice Solution
1）Before LTE supports VoIP, Voice service falls
back to UMTS via CSFB:

RAT measurement, then it will adaptively adopt CSFB
occurs in a cell
without measurement which need configure blind
2） Supports LTE-> UMTS load-based
handover

In UMTS connection mode, UE does not support inter-
priorities of neighbour cells of UMTS cells

In case of unspecific UMTS handover function
Let certain services with a specifics
supported by the network and UEs, only enable the
QCI (such as VoIP) fall back to UMST
switch of redirection.
3）Supports LTE-> UMTS CS/PS service
2） If VoIP is deployed in LTE not in UMTS, SRVCC
steering，CS service（such as CSFB）is
is applied at the edge of LTE network so as to
suggested to fall back carriers in R99,
handover voice service to UMTS CS domain.
while PS service(such as coverage-base
3）If VoIP is deployed in both LTE and GSM, PSHO is
service) is recommended to fall back to
adopted at the edge of LTE network so as to handover
carriers in HSPA
VoIP service to UMTS network.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page21
GUL Networking Strategy

UMTS can not realize the
continuous coverage, while
operators require to
preferentially interoperate to
UMTS, therefore forming
GUL scenario

Uses the same strategy with
before, so only differences
list here
Connection Mode / Voice Solution
1）LTE->GU intersystem handover: Current commercial
UEs are not able to support GSM but UMTS intersystem
measurement, therefore, eNodeB only delivers UMTS
measuring to UE. When the quality of UMTS is better
and UE reports event B1, and eNodeB will handover UE
to a UMTS neighbour cell. If there is no UMTS coverage
are and UE does not report event B1, eNodeB will
directly blind redirect UE whose receiving level in the
serving cell is lower than certain threshold(coveragebased) or sometime later(CSFB) to GSM.
2）After UE supporting GSM measuring, via adjusting GSM
parameters(suggest to longer UMTS measuring time) to
ensure UE report B1 MR of UMTS to realize to
Idle Mode
空闲态
handover to UMTS preferentially
3）If UE does not support GU measuring, prefer blind
Camping priority ：LTE > UMTS > GSM
handover to UMTS can be realized via configuration.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page22
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page23
Target of GSM/UMTS/LTE
Interworking
Expanding / Mature Phase
 Voice service introduced;
 Load based mobility management;
 Service based mobility management;
Initial Phase
 Data service only;
 Keep service continuity via GSM/UMTS network ;
 Avoid the impact on the GSM/UMTS network stability;
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page24
Interworking Procedure Components

Interworking procedure includes 4 steps: Trigger, Measurement, Decision
and Execution.
PS Voice
…
Servic
e
QoS
Load
Satisfa
ction Covera
with
Measure
ment
IDLE
UE Make
Decision
Re-Selection
ge
RRC
Connected
BS Make
Decision
Redirection
PS Handover
Blind
CCO/eNACC
CCO: cell change order
eNACC: network assisted cell change
RRC: radio resource control
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page25
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
3.1 Coverage-Based Interoperability Solution
3.2 Load-Based Interoperability Solution
3.3 Voice Service Continuity Solution
3.4 Interoperability Strategy Cases of Operators
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page26
Camping Procedure
Common Camping Priority
Last RPLMN
UE
Camping
SIM
Common priority is sent to UE in SIB
HPLMN & EHPLMN
UE
PLMN of “User Controlled PLMN
Selector with Access Technology”
SIM
PLMN of “Operator Controlled PLMN
Selector with Access Technology”
> LTE FDD > UMTS/TDS > GSM
or LTE TDD > LTE FDD > HRPD > 1x
LTE TDD
Verify if
target is
forbidden
+
1, Faster loading up LTE network;
2, Less impact to G/U network and
subscribers.
UE Individual Priority
Various UE individual priorities can be
The PLMN of Better Wireless Quality
applied to distribute subscribers to specific
networks based on operator policy.
Other PLMN Base On Wireless Quality
1, SPID-based UE Individual Priority
2, PLMN-based UE Individual Priority
RPLMN(registered PLMN)
EHPLMN（Equivalent HPLMN)
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Page27
Common Frequency Priority with SIB
Broadcasting
TDD
SIB 3
Serving
Frequency
Priority
Serving = 5
SIB 5
InterFrequency
Priority
FFDD = 4
SIB 6
UTRAN
Frequency
Priority
FUTRAN = 2
SIB 7
GERAN
Frequency
Priority
FGERAN = 1
FDD
SIB 3
Serving
Frequency
Priority
Serving = 4
SIB 5
InterFrequency
Priority
FFDD = 5
SIB 6
UTRAN
Frequency
Priority
FUTRAN = 2
SIB 7
GERAN
Frequency
Priority
FGERAN = 1
UTRAN
UTRAN
SIB 19
Serving = 2
FGERAN = 1
FFDD = 4
FTDD = 5
GERAN
GERAN
SIB 2 quater
Serving = 1
FUTRAN = 2
FFDD = 4
FTDD = 5
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
TDD
FDD
Page28
SPID-Based UE Individual Priority
HSS set SPID info for each subscriber,
and send to eNodeB via MME
HSS
HSS
SPID
TDD Priority 5
UE with Data package (i.e. SPID =10):
FDD Priority 4
The common priority in SIB will work,
UE will prefer camping on LTE TDD
Data
UTRAN Priority 3
package
GERAN Priority 2
Mobile
Terminal
S6a
(SPID)
Strategy
Cell reselection Info
Data package
Mobile
Terminal
Cell reselection Info
UE with voice package(i.e. SPID=20):
GERAN Priority 5
eNodeB will send UE individual priority
with GSM higher than LTE in RRC
Connection Release message.
TDD Priority 4
MME
S1-MME
(SPID)
FDD Priority 3
Voice
UTRAN Priority 2
package
Mobile
Cell reselection Info
Terminal
Voice package The individual cell reselection priority
will overwrite common priority.
Mobile
Terminal
UE will prefer camping on GSM
TDD Priority 5
FDD Priority 4
eNodeB
CPE
UTRAN Priority 3
GERAN Priority 2
CPE
CPE (i.e. SPID=30), the eNodeB will
not send UE individual priority to UE,
the common priority in SIB will work,
then CPE will prefer camping on LTE
TDD
SPID Service Profile Identifier
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Page29
UE Individual Priority based on PLMN
Concept
Policy
 Priority based on SPID
 Priority based on PLMN
LTE TDD
PLMN1
PLMN2
RRC Connection
Release
RRC Connection
Release
TDD Priority 5
FDD Priority 5
FDD Priority 4
TDD Priority 4
UMTS Priority 3
UMTS Priority 3
GSM Priority 2
GSM Priority 2
LTE FDD
HPLMN is PLMN1
High Priority
HPLMN is PLMN2
 Cell Common Priority
Low Priority
According to the PLMN which UE is
registered to, the eNodeB may send
individual priority with RAT1 (e.g.
FDD) higher than RAT 2 (e.g. TDD) in
RRC Connection Release message,
the individual priority will overwrite
common priority, then UE will prefer
camping on its Home Network (e.g.
FDD).
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page30
Coverage-Based Re-Selection in IDLE Mode
Intra-frequency
Scan by default
Serving cell
Inter-frequency (including Inter-RAT)
From Low priority to High priority
Scan by default
From High priority to Low or Equal
priority
Target cell
Low
priority
Broadcast
Serving cell
• Good quality in serving cell(Level and
Quality)：not to measure neighbour
cells
• Bad quality in serving cell(Level or
Quality)：measure neighbour cells
• Measure or not via switch CFG
High
High
priority priority Broadcast
Target cell
•Always measure neighbour cells
Serving cell
Target > Threshold
Target cell
• Good quality in serving cell(Level and
Quality)：not to measure neighbour cells
• Bad quality in serving cell(Level or
Quality)：measure neighbour cells
• Measure or not via switch CFG
Scan
Target – Serving > Offset
Low
priority
Serving <
Threshold1
Re-selection
Target >
Threshold 2
Common priority sequence and threshold is broadcasted in SIB message, should be the same for the entire
network. SIB 3 5 6 broadcasted in LTE, SIB 19 broadcasted in UMTS.
* Threshold based on RSRP or RSRQ
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page31
Coverage-Based Interworking in RRC
Connected Mode
Coverage based Interworking is triggered by A2 Event:
Serving < Threshold1
Intra-frequency
Serving cell
Target cell
HO/Redirection
A3 :
Target – Serving > Offset
Inter-frequency (Intra-RAT)
Serving cell
Target cell
Inter-frequency (Inter-RAT)
Serving cell
HO/Redirection
Target cell
HO/Redirection
Event: A3/A4/A5
A4 is recommended
Event: B1/B2
Coverage based PS handover is recommended to enable by default.
Blind PSHO or redirection will be used, if Inter-frequency (including inter-RAT) measurement is not supported by UE
* Threshold based on RSRP or RSRQ
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page32
PS Handover Execution Procedure

Example: Inter-RAT handover instance: Handover from LTE cell to G/U cell
HO Trigger, Measurement and Decision
SGW
①
③
LTE
eNode
B
PGW
② ⑥
⑥
③
MME
② MME sends relocation to target SGSN
Target GU network establish access connection
⑤
③ eNodeB sends HO command to UE
② ⑤
④ MS detected by target GU network
SGSN
⑤ Target network finish relocation.
Context exchange with source PGW
④
②
⑤
BSC/RNC
⑤
① HO decision: LTE to GU
eNodeB sends HO request
GGSN
⑥ Release source network resources
G/U/T
BTS
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page33
eNACC Procedure

Example: Inter-RAT handover instance: eNACC from LTE
cell to GSM cell
HO Trigger, Measurement and Decision
SGW
PGW
⑥
②
③
①
LTE
eNodeB
MME
⑥
②
② eNodeB gets target cell info. by RIM
procedure
⑤
③ eNodeB sends HO command to UE
⑤
④
④ MS detected by target GSM network
②
⑤
BSC
⑤
① UE send target cell measurement to
eNodeB. eNodeB makes HO decision
SGSN
GGSN
GSM BTS
⑤ Target network finish relocation.
Context exchange with source PGW
⑥ MME release source network resources
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page34
Redirection Procedure
Inter-RAT handover instance: Redirection from LTE cell to G/U cell

HO Trigger, Measurement and Decision
SGW
PGW
① UE send target cell measurement to
eNodeB. eNodeB makes HO decision
③
②
①
② eNodeB send RRC Release message to
UE, carrying RedirectedCarrierInfo that
specifies the frequency of the target
GERAN/UTRAN cell.
MME
③
LTE
eNodeB
③
BSC
③
SGSN
GGSN
G/U BTS
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
③ UE in RRC IDLE state, reselect the
GERAN/UTRAN cell with the specified
frequency according to redirection information.
eNodeB requests MME release LTE
RRC_Connect.
UE initiates an RAU procedure.
Page35
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
3.1 Coverage-Based Interoperability Solution
3.2 Load-Based Interoperability Solution
3.3 Voice Service Continuity Solution
3.4 Interoperability Strategy Cases of Operators
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page36
Load Balance Scenarios
Highload
Serving cell
Load status Offload
exchange
Normal
Cell load based activities
RB use rate
Concept
Serving
Cell Load
Target cell
Policy
• Intra-RAT Load balance can be enabled
when LTE has limited coverage and
subscriber.
• Inter-RAT can be enabled when LTE
Intra-RAT MLB
PS Handover;
expanded coverage and has more
subscribers.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Load Control
Inter-RAT MLB
PS Handover;
Redirection;
Page37
Reject+Redirection;
Release+Redirection;
For GBR
Intra-RAT MLB Procedure with X2
6 Option 1: Choose target cell by Blind
HO priority (if blind HO enabled)
Option 2: Require UE to scan
candidate target cells. Choose target
cell on UE report.
Option 3: If No UE supports PSHO.
Redirection can be applied.
2 Request neighbor cell
Uu
load information
X2
3
1
Serving cell load exceeds Intra-RAT
MLB threshold
4
Make target cell candidate list
5
Make UE candidate list, based on
RB usage and QoS configuration
Reply with
cell load
information
7
HO Execution
LTE UE
LTE TDD eNodeB
LTE FDD/TDD
Not recommend Intra-RAT MLB w/o X2 for limited performance than X2 based MLB
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page38
Inter-RAT MLB Procedure
6 Option 1: Choose target cell by Blind
HO priority (if blind HO enabled)
Option 2: Require UE to scan
candidate target cells. Choose target
cell on UE report.
Option 3: If No UE supports PSHO.
Redirection can be applied.
2
Request neighbor cell
load status by RIM
(Consider as normal,
if status exchange by
RIM is not supported)
Uu
S1 MME
3
1
Reply with
cell load
status by RIM
Serving cell load exceeds
Inter-RAT MLB threshold
MME
7
4
Make target cell candidate list
5
Make UE candidate list, based on
RB usage and QoS configuration
HO Execution
Multi-Mode UE
Lu-ps
S3/Gn
SGSN
LTE TDD eNodeB
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
GSM/UMTS
Page39
Inter-RAT Load Sharing via Redirection in IDLE
Mode
UE RRC Connected
which has no traffic
will be released to
IDLE Mode.
?
UE
Target cell
Serving cell
RRC Connection
Release
UMTS Priority 5
TDD Priority 4
FDD Priority 3
2
TDD sends Individual
Priority to UE during
Idle Enter Procedures
Multi-Mode UE
Status
Unknown
1
eNodeB send RRC Release message to UE (which
is inactive for 20s), carrying RedirectedCarrierInfo
that specifies the frequency of the target cell.
T320 timer will work. Specified priority will be
effective until T320 expires.
(T320 will expire when UE service is active and
finished.)
3
UE redirected to target
based on the specified
frequency in redirection
message.
UE performs network entry.
LTE TDD eNodeB
GSM/UMTS
•This solution doesn’t impact UE experience.
•UE doesn’t support PSHO can be offload to G/U with this scheme.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page40
Load-Control-Based Redirection(GBR
Service)
Either UE in RRC
Connected mode or
UE attempting to enter.
Based on UE priority.
?
Status
Unknown
UE
Overloaded
TDD Priority 5
FDD Priority 4
UMTS Priority 3
GSM Priority 2
2
1
eNodeB send RRC Release message
to UE, carrying RedirectedCarrierInfo
that specifies the frequency of the
target cell.
Either Inter-RAT redirection or
Intra-RAT redirection when
UE doesn’t support PSHO.
3
UE redirected to target based
on the specified frequency in
redirection message.
UE performs network entry.
TDD sends Individual
Priority to UE during
Idle Enter Procedures
Multi-Mode UE
Target cell
Serving cell
RRC Connection
Release
LTE TDD eNodeB
GSM/UMTS
It is recommended to reduce load through MLB, not load control.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page41
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
3.1 Coverage-Based Interoperability Solution
3.2 Load-Based Interoperability Solution
3.3 Voice Service Continuity Solution
3.4 Interoperability Strategy Cases of Operators
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page42
Voice Service Continuity Solution
CS Fall Back
SRVCC
CS Voice
Paging
VoLTE
CS Voice
VoLTE
Dual-Standby
G/U/C
LTE
LTE
LTE
G/U/C
Handover
EPC
Voice / PS Data
G/U/C
G/U/C
LTE
LTE Data
PS Voice
VoLTE
SGs
CS Core
EPC
Sv
CS Core
Handover
EPC
S3/S4
PS Core
No Handover
EPC
PS Core
Access Transfer
Call
Access
st
• 2010Q4, world’s 1 LTE to
UMTS/GSM CSFB call.
st
• Jan. 2011, world’s 1 CSFB
call with commercial smart
phone.
• Apr. 2012, 11 commercial
CSFB networks.
Call
IMS
Call
IMS
Call
IMS
st
SRVCC: Single Radio Voice
Call Continuity
• May. 2011, world’s 1 VoLTE call.
• Feb. 2012, joint VoLTE demo with
VDF in MWC 2012.
• 2013, CMCC Commercial
Leverage CS Voice Legacy and Introduce IMS PS Voice Service Progressively
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page43
CS Fall Back Solution for Voice
LTE
G/U/T/C
Voice falls
back to G/U/C
In the overlapped
coverage of LTE
and G/U/T/C…
•Reuse G/U/T/C Core;
•No additional core
equipment
Principle
Provide voice service through G/U/C
network.
 Two options for the PS data service:
 Service handover to G/U/T PS service;
 Service suspended until voice call is over,
then continue in LTE network. (Suspending
is enabled in CL PS now).

Advantage

Enable Voice service quickly and
minimize new investment.
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page44
Architecture and Functionalities of NE for CSFB
• Above 3GPP R8
• SGs/ISUP Connection
with MME or SGs Proxy
• Multi-mode G/U/L;
• CSFB capability;
Mobility management and
paging procedures
between EPS and CS
domain.
MSC/
VLR
Gs
SGs
BSC/
RNC
SGSN
G/U
BTS
Gr
HSS
Gn
S6a
• Mirroring VLR number
and LAI with TAI.
• SGs connection for
EPS/IMSI Attached UE
• Paging to eNodeB & UE
MME
Gn
• Paging to UE for
CS domain.
• Indicate UE to the
target CS cell.
LTE
eNodeB
S1-MME
S11
S1u
SGW
S5
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
PGW
Gx
PCRF
Page45
Fast Return From G/U to LTE
At the End
of A Voice
Call
Solution1:
Adjust IDLE
Timer
Less impact to
NodeB and EPC
Solution2:
NodeB Force
UE Return to
LTE
Need NodeB and
EPC support
redirection or
PSHO
No PS
service
With PS
service:
Wait until
service stops
With or
without PS
service
If there is LTE
UE reselect to LTE
Frequency
There is NO
LTE
UE stay IDLE in UMTS
If there is LTE
NodeB redirect / PSHO
UE to LTE
RRC Connected
There is NO
LTE
NodeB should not
initiate redirection or
PSHO
There are 2 ways to determine if there is LTE coverage: (RRC connected)
1, Need UE support IRAT measurement. NodeB request UE measures LTE
neighbor before PSHO or redirection.
2, Only enable Solution 2 on NodeB when there is LTE in same area
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page46
Fast Return to LTE at the End of CSFB
Without fast return
BSC/
RNC
Release call with
CSFB indication
PS Ready LTE
PS
CSFB
CS call
LTE
cell
reselection
Enter IDLE and Reselect to LTE
With fast return
PS
Direct access
CSFB
GSM/UMTS
PS Ready
CS call
LTE
GSM/UMTS
frequency
info.
G/U
Back to LTE
after CS call
Description
• At the end of a CSFB call in GSM/UMTS network, the frequency information of LTE cell is sent in RRC Connection
Release message in order to instruct the UE to camp on the LTE cell instead of cell re-selection to LTE.
Benefits
• This feature accelerate the camping back to LTE after voice call release and reduce unreachable time of LTE user
• Avoid the impact to non-CSFB user(e.g. UE may be out of network when trying to access LTE for about 10 seconds)
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page47
SRVCC Solution for Voice
LTE
GU
LTE
When UE
moving from
LTE coverage
to GSM/UMTS
with voice
service…
SRVCC to GUT
Requires IMS and
EMSC deployment
Advantage
Principle


Provide VoLTE service for LTE
subscribers via IMS;
SRVCC for VoLTE to G/U CS call via
handover procedure;
GSM/UMTS


Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Introduce IMS solution;
PCC structure, future oriented
Convergent solution;
Page48
SRVCC: Architecture and
Functionalities of NE
• Enhanced MSC (with IWF)
• SRVCC capability
• Relocation procedure to CS.
• Invoking session transfer procedure,
voice continuity through SCC AS.
• Coordinating CS handover and
session transfer.
MSC/
VLR/IWF
• Multi-mode G/U/L UE
• IMS/SRVCC capability
Gs
Sv
BSC/
RNC
G/U BTS
SGSN
S12
S3
HSS
S6a
MME
S1-MME
LTE
eNodeB
S1u
S4
S11
SGW
S5
• PS bearer splitting voice bearer (QCI=1)
from the non-voice bearer
• Handling the non-voice HO to target cell
• Initiating SRVCC of the IMS voice call to
the 2G/3G cell via Sv
PGW
SGi
Gx
• Indication to MME about SRVCC
• Determine the neighbor cell supports
SRVCC \
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
PCRF
Page49
Rx
IMS
eSRVCC Solution
SRVCC (R8)
eSRVCC (R10)
CS Voice
CS Voice
G/U
CS
G/U
CS
MSC
MSC
IMS
IMS
ATCF
LTE PS
EPC
LTE PS
SBC
PS Voice
•Re-establish the call signaling and bearer end
to end.
•IMS session transfer for remote end has
uncertain interruption, especially for:
long service handling duration
multiple nodes involved
complex service logic and triggering
roaming out of home network
EPC
SBC
ATGW
PS Voice
signaling after HO
bearer after HO
signaling before HO
bearer before HO
•Remote end update is avoided to reduce
the interruption significantly (equal to HO
interruption of radio access, usually <
300ms).
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page50
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
3.1 Coverage-Based Interoperability Solution
3.2 Load-Based Interoperability Solution
3.3 Voice Service Continuity Solution
3.4 Interoperability Strategy Cases of Operators
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page51
Interworking Strategy of Operator S
Redirection
(Based on coverage.
PS handover will be
enabled when
terminal is available)
LTE TDD 2.6G
Huawei
Voice CSFB
(Based on
voice service)
Reselection/
Fast Return
(As soon as
voice service
is finished
and UE
under LTE
coverage)
1.5G UMTS
(Data)
Offload
(Default camping on
LTE TDD. Reselect to
LTE TDD when UE is
under LTE coverage.
Redirection or PSHO
will be enabled when
UMTS is able to be
upgraded)
Ericsson
2.1G UMTS
(Voice/Data)
Ericsson
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page52
Interworking Strategy of Operator B
Load Balance
LTE TDD 2.3G
Voice CSFB
To G/U
(Based on
voice service)
Redirection
(Based on coverage.
PS handover will be
enabled when
terminal is available)
LTE FDD
1.8G/2.6G
Huawei
900M/2.1G
UMTS
(Data)
Offload to LTE
(Default camping on
LTE TDD. Reselect to
LTE TDD when UE is
under LTE coverage.
Redirection or PSHO
will be enabled when
UMTS is able to be
upgraded)
Huawei, XXX(aother
operator)
Reselection
(As soon as
voice service is
finished and UE
under LTE
900M/1.8G GSM
coverage)
(Voice)
huawei
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page53
Interworking Strategy of Operator C
Default Camping
LTE TDD 2.6G
GL Reselection
Voice CSFB
To G/T
(SRVCC in
future)
TL Reselection
TL Redirection
Fast Return
（rSRVCC in
future）
TDS-CDMA
GL Redirection
CCO/ eNACC
GSM
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page54
Interworking Cases(1)
Country /
Operator
region
Japan
SBM
GU
Vendor
Ericsson
G/U
Huawei
G/U
NSN U
Huawei
LTE
FDD/TDD
Ericsson ,
Huawei,
NSN G/U
Hong
Kong
GB
(PCCW/H
utchison)
Saudi
STC
China
CMCC
Huawei
TDS
SA
Telkom
Huawei
G/U
Sweden
Net4M
UMTS
EPC
Interwork
ing
Voice
PS
Network
Structure
Huawei
Coverage
-based
CSFB
Reselection between
LTE and UMTS
Gn/Gp
Redirection from LTE to
UMTS
Huawei
Coverage
-based
CSFB(EMSC)
to G/U
(blind
redirection)
Reselection between
LTE and UMTS
Gn/Gp
Redirection from LTE to
UMTS
Huawei
Coverage
-based
CSFB
Redirection
Gn/Gp
Gn/Gp
Huawei
NSN
Gn/Gp
Coverage
- based
CSFB to
UMTS
(blind
redirection)
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Reselection between
LTE and UMTS
Gn/Gp
Redirection from LTE to
UMTS
Page55
Interworking Cases(2)
Country /
region
Canada
Singapore
Germany
Japan
Operator
Bell/Telus
M1
VDF D2
eAccess
GU
Vendor
Huawei
UTMS
Huawei
GU
NSN
UMTS
Huawei
GU
Interworki
ng
Voice
CISCO
Coverage
- based
CSFB to
UMTS
(blind
redirectio
n)
Huawei
Coverage
- based
Loadbased
CSFB
EPC
NSN
Coveragebased
Ericsson
Coveragebased
Loadbased
CSFB to
GSM
(blind
redirectio
n)
CSFB to
UMTS
(blind
redirectio
n or
PSHO)
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
PS
Network
Structure
Reselection
between LTE and
UMTS
Gn/Gp
Redirection from
LTE to UMTS
Reselection
between LTE and
UMTS
Gn/Gp
PSHO from LTE to
UMTS
Reselection among
LTE UMTS GSM
Redirection from
LTE to UMTS or
GSM
Gn/Gp
Reselection among
LTE UMTS GSM
Redirection from
LTE to UMTS or
GSM
Gn/Gp
Page56
Interworking Cases(3)
Country
GU
Operator
/ region
Vendor
EPC
Norway
Telenor
Huawei
umts
Cisco
Norway
Netcom
Huawei
GU
Huawei
Kuwait
Zain
Huawei
Huawei
UAE
Etsalat
Huawei
huawei
Saudi
Zain
Huawei
Huawei
UAE
DU
huawei
Cisco
Interworki
ng
Voice
CSFB to
Coverage UMTS
-based
(blind
redirection)
CSFB to
Coverage UMTS
-based
(blind
redirection)
PS
Reselection between
LTE and UMTS
Redirection from LTE
to UMTS
Reselection between
LTE and UMTS
Redirection from LTE
to UMTS
Network
Strucuture
Gn/Gp
Gn/Gp
Gn/Gp
Coverage
-based
Reselection between
LTE and UMTS
Redirection from LTE
to UMTS
Gn/Gp
Gn/Gp
Coverage
-based
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Reselection between
LTE and UMTS
Redirection from LTE
to UMTS
Page57
Gn/Gp
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page58
KPI Related to Interoperability(1/2)
Counter ID
Counter Name
Counter Description
1526726989
L.IRATHO.E2W.PrepAttOut
Number of Outgoing Handover Attempts from EUTRAN to UTRAN
1526726990
L.IRATHO.E2W.ExecAttOut
Number of Performed Outgoing Handovers from EUTRAN to UTRAN
1526726991
L.IRATHO.E2W.ExecSuccOut
Number of Successful Outgoing Handovers from EUTRAN to UTRAN
1526726992
L.IRATHO.E2G.PrepAttOut
Number of Outgoing Handover Attempts from EUTRAN to GERAN
1526726993
L.IRATHO.E2G.ExecAttOut
Number of Performed Outgoing Handovers from EUTRAN to GERAN
1526726994
L.IRATHO.E2G.ExecSuccOut
Number of Successful Outgoing Handovers from EUTRAN to GERAN
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page59
KPI Related to Interoperability(2/2)
LTE->WCDMA IRATHO _ E 2W _ SRout 
L.IRATHO.E 2W.ExecSuc cOut
100%
L.IRATHO.E 2W.ExecAtt Out
IRATHO _ E 2G _ SRout 
L.IRATHO.E 2G.ExecSuc cOut
100%
L.IRATHO.E 2G.ExecAtt Out
LTE->GSM
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page60
Traffic Statistics(1/2)
Redirection
Counter ID
Counter Name
Counter Description
1526728326
L.RRCRedirection.E2W
Number of Redirction to WCDMA
1526728330 L.RRCRedirection.E2W.PrepAtt
1526728327
L.RRCRedirection.E2G
1526728331 L.RRCRedirection.E2G.PrepAtt
Number of attempt Redirction to WCDMA
Number of Redirction to GERAN
Number of attempt Redirection to GERAN
CSFB
Counter ID
Counter Name
Counter Description
1526728321
L.CSFB.PrepAtt
Number of CS fallback indicators received by
the eNodeB
1526728322
L.CSFB.PrepSucc
Number of successful CS fallback responses
from the eNodeB
1526728323
L.CSFB.E2W
Number of CS fallback procedures to UTRAN
1526728324
L.CSFB.E2G
Number of CS fallback procedures to GERAN
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page61
Traffic Statistics(2/2)
Reasons of handover failure:
Counter ID
Counter Name
1526728316 L.IRATHO.E2W.Prep.FailOut.MME
Counter Description
Number of handover prepare failure from LTE
to WCDMA for MME reason
Number of handover prepare failure from LTE
1526728317 L.IRATHO.E2W.Prep.FailOut.PrepFailure to WCDMA for prepare failure indication from
WCDMA
1526728318 L.IRATHO.E2C.Prep.FailOut.NoReply
Number of handover prepare failure from LTE
to WCDMA for no reply with WCDMA
1526728306 L.IRATHO.E2G.Prep.FailOut.MME
Number of handover prepare failure from LTE
to GERAN for MME reason
1526728307 L.IRATHO.E2G.Prep.FailOut.NoReply
Number of handover prepare failure from LTE
to GERAN for no reply with GERAN
Number of handover prepare failure from LTE
1526728308 L.IRATHO.E2G.Prep.FailOut.PrepFailure to GERAN for prepare failure indication from
GERAN
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page62
Drive Test Index
Via Assistant-based tool
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page63
Contents
1. GUL Interoperability Overview
2. GUL Interoperability Networking Strategy
3. GUL Interoperability Solution
4. GUL Interoperability Performance Estimation
5. GUL Interoperability Ecosystem Developing
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page64
Huawei Leading CSFB
Commercialization
Nov. 2010
Huawei made
World’s 1st LTE to
UMTS CSFB Call
Dec. 2010
Huawei made
World’s 1st LTE to
GSM CSFB Call
Jan. 2011
Oct. 2012
Oct. 2012
World’s 1st CSFB
Call with Commercial
Smartphone
World’s 1st LTE TDD
CSFB with Commercial
SmartPhone
11 Commercial
CSFB
Networks
See the red star
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page65
Huawei LTE IOT Status (Main
Terminals)
Module
Vendor
Chipset
Type
RAT
E398(1st LTE FDD/TDD USB
Dongle)
Huawei
Hisilicon Balong 700
USB Dongle
LTE(FDD/TDD)
E392u(1st GUL(F/T) USB
Dongle)
Huawei
Qualcomm MDM 9200
USB Dongle
GUL(FDD/TDD)
E589u(1st GUL(F/T) mobile
wifi)
Huawei
Qualcomm MDM 9200
USB Dongle
GUL(FDD/TDD)
B593(1st GUL(F/T) CPE)
Huawei
Hisilicon Balong 700
CPE
GUL(FDD/TDD)
B222s(1st outdoor CPE)
Huawei
Altair FG3100
CPE
LTE(TDD)
9201L(1st GULSmartPhone)
(Chipset F/T Ready)
Huawei
Qualcomm MSM 8960
Smartphone
GUL(FDD/TDD)
E5776
Huawei
Hisilicon Balong 710
Mobile WiFi
GUL(FDD/TDD)
E3276
Huawei
Hisilicon Balong 710
USB Dongle
GUL(FDD/TDD)
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page66
Huawei LTE IOT Status (Main
Chipsets)
Module
Vendor
3GPP
version
Cat
RAT
MDM 9200
Qualcomm
R8
Cat 3
GUCL
MDM9600
Qualcomm
R8
Cat 3
GUCL
MSM 8960
Qualcomm
R9
Cat 3
GUTCL
MDM 9X15
Qualcomm
R9
Cat 3
GUTCL
XMM7060
Intel
R8
Cat 3
GUL
Balong 700
Hisilicon
R8
Cat3
LTE
Balong 710
Hisilicon
R9
Cat 4
GUL
FG3100
Altair
R9
Cat 4
GUL
LC1760
LeadCore
R8
Cat 3
TDS-CDMA, LTE TDD
SQN3010
Sequans
R8
Cat 3
LTE
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page67
Mainstream Chipset Capabilities
Balong 710
Snapdragon MSM 8960
3GPP R9
LTE TDD/FDD/HSPA+/GSM
CSFB,
Redirection, PSHO,
IRAT Measurement
3GPP R9
LTE TDD/FDD/TDS-CDMA/UMTS/GSM
CSFB/SRVCC(2013Q1)
Redirection, PSHO
IRAT Measurement
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page68
Summary

Incentive of Interoperability

Structure Key Interface of Interoperability

Deployment Strategy of Interoperability

Networking Strategy of Interoperability

Procedure of Interoperability

Coverage-based/Load-based Solution of of Interoperability

KPI Related of Interoperability

Cases of Interoperability
Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved.
Page69
GU Matching Version List
Target
System
GSM
UMTS
Capacity of Target RAN
The Lowest
Version
The Version
Suggested
GSM->LTE Cell Reselection
GBSS12.0
GBSS14.0
LTE->GSM PSHO
GBSS12.0
GBSS14.0
LTE->GSM CCO/NACC
GBSS12.0
GBSS14.0
LTE->GSM SRVCC
GBSS12.0
GBSS14.0
UMTS->LTE Cell Reselection
RAN 12
RAN 14
LTE->UMTS PSHO
RAN 13
RAN 14
LTE->UMTS SRVCC
RAN 15
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