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Emerson Eduardo Rodrigues - ENGINEERING STUDIES1 Rp 160571-mark new si proposal study on hspa and lte joint operation
1. 3GPP TSG RAN Meeting #71 RP-160571
Gothenburg, Sweden, Mar 7 - 10, 2016 revision of RP-160311
Source: China Unicom
Title: New SI Proposal: Study on HSPA and LTE Joint Operation
Document for: Approval
Agenda Item: 10.1.3
3GPP™ Work Item Description
For guidance, see 3GPP Working Procedures, article 39; and 3GPP TR 21.900.
Comprehensive instructions can be found at http://www.3gpp.org/Work-Items
Title: Study on HSPA and LTE Joint Operation
Acronym: FS_UTRA_LTE_JOP
Unique identifier:
NOTE: If this is a RAN WID including Core and Perf. part, then Title, Acronym and Unique identifier refer to
the feature WI. Please tick (X) the applicable box(es) in the table below:
This WID includes a Core part
This WID includes a Performance part
1 3GPP Work Area
X Radio Access
Core Network
Services
2 Classification of WI and linked work items
2.0 Primary classification
This work item is a …
X Study Item (go to 2.1)
Feature (go to 2.2)
Building Block (go to 2.3)
Work Task (go to 2.4)
NOTE: Core, Performance and Testing parts of RAN WIs are usually Building Blocks.
If you are in doubt,please contact MCC.
2.1 Study Item
Related Work Item(s) (if any]
Unique ID Title Nature of relationship
Go to §3.
2. 2.2 Feature
Related Study Item or Feature (if any)
Unique ID Title Nature of relationship
Go to §3.
2.3 Building Block
Parent Feature (or Study Item)
Unique ID Title TS
This work item is …
Stage 1 (go to 2.3.1)
Stage 2 (go to 2.3.2)
Stage 3 (go to 2.3.3)
Test spec (go to 2.3.4)
Other (go to 2.3.5)
2.3.1 Stage 1
Source of external requirements (if any)
Organization Document Remarks
Go to §3.
2.3.2 Stage 2
Corresponding stage 1 work item
Unique ID Title TS
Other source of stage 1 information
TS or CR(s) Clause Remarks
If no identified source of stage 1 information, justify:
Go to §3.
2.3.3 Stage 3
Corresponding stage 2 work item (if any)
Unique ID Title TS
Else, corresponding stage 1 work item
Unique ID Title TS
Other justification
TS or CR(s) or externaldocument Clause Remarks
If no identified source of stage 2 information, justify:
3. Go to §3.
2.3.4 Test spec
Related Work Item(s)
Unique ID Title TS
Go to §3.
2.3.5 Other
Related Work Item(s)
Unique ID Title Nature of relationship TS / TR
Go to §3.
2.4 Work task
Parent Building Block
Unique ID Title TS
3 Justification
With the increasing of LTE subscribers,it is critical for UMTS operators to consider how to achieve satisfied utilization
of UMTS resources.Spectrum refarming needs in long term since the data traffic still increases in the HSPA networks
(operators reduce the data tariff). For voice supporting,CSFB still be the common mechanism for LTE devices ,and
UMTS networks is needed for voice services.
It will be a long-term situation that voice over CS will be existed for long time paralleling with voice over LTE. VoLTE
could be a challenge for operators as it needs to deploy IMS and bring with the problems of cell planning, network
optimization. For CS voice, the advantage of coverage is obvious since UMTS has been deployed and optimized for
long time. Furthermore, CS voice solutions are still under evolutions to provide even better voice service, e.g. EVS etc.
The specified UMTS and LTE interworking mechanisms are not sufficient, as the user experience is restricted by the
available radio resource and the channel quality in single RAT. Subscribers could only camp on and access to either
LTE or HSPA, who could be scheduled from one RAT to another RAT for inter-RAT load balance.
Tight-integration of HSPA and LTE could be a way for satisfied voice supporting and high data rate. Firstly, the
continuous wide coverage of HSPA network can provide satisfactory voice services.Secondly, LTE has attractive
abilities for high data rate PS services.
4 Objective
4.1 Objective of SI or Core part WI or Testing part WI
The objective of the study item is to study some possible solutions to support CS in UMTS and PS in LTE, evaluate the
impacts on network architecture and interface, e.g.
1) Assumption: UE always camps on LTE and voice service is on UMTS.
2) Study the possible solutions,on top of current mechanism, as the following cases .
i. An idle UE in LTE initiating MT/MO voice call, both network and UE side behaviours
ii. A connected UE in LTE initiating MT/MO voice call, both network and UE side behaviours
iii. A connected UE in UMTS with CS service, UE tries to establish PS service
4. 3) Study the possible solution and impacts on architecture, signalling flow enhancement, with the working
assumption that impacts should be as less as possible, e.g. LTE specs.
4.2 Objective of Performance part WI
NOTE: Leave empty if the WI proposaldoes not contain a RAN performance part.
4.3 RAN time budgetproposal
NOTE: For WIs/SIs under RAN WG5 leadership this section is not filled out.Otherwise:
For a not yet approved WI/SI the rapporteur has to fill out the last row of the table(s) below up to the
target date of the WI/SI (if necessary add further tables): Indicate the number of time units (1 TU ~ 2h),
i.e. one value for each session/field.If no time unit is needed,leave the field empty.
Once the WI/SI is approved, the tables below will no longer be updated in the WI/SI description (i.e. the
tables reflect the status of the initial approval). But changes can be proposed in the status report of the
WI/SI.
RAN #71 Q2/2016 RAN #72
R1L R1U R2L R2U R2J R3 R4RF
Core
R4RD
Core
R4RF
Perf
R4RD
Perf
R1L R1U R2L R2U R2J R3 R4RF
Core
R4RD
Core
R4RF
Perf
R4RD
Perf
84bis 84bis 93bis 93bis 93bis 91bis 78bis 78bis 78bis 78bis 85 85 94 94 94 92 79 79 79 79
0.5 1 1 1
RAN #72 Q3/2016 RAN #73
R1L R1U R2L R2U R2J R3 R4RF
Core
R4RD Core R4RF
Perf
R4RD Perf
86 86 95 95 95 93 80 80 80 80
1 1
L: LTE, U: UMTS, J: Joint, RD: RRM/demodulation
NOTE: In case further explanation of the time budget proposalis needed, then please explain this below.
additional comments to the time budget proposal:
5 Service Aspects
6 MMI-Aspects
7 Charging Aspects
8 Security Aspects
9 Impacts
Affects: UICC apps ME AN CN Others
Yes X X
No X X X
Don't know
5. 10 Expected Output and Time scale
New specifications [If Study Item, one TR is anticipated]
Spec No. Title 1st rsp.
WG
2nd rsp.
WG(s)
Presented for
information at
plenary#
Approved at
plenary #
Comments
TR 37.8xx Study on HSPA and LTE Joint
Operation
RAN3 RAN2 RAN #71 RAN #73
NOTE: If this is a RAN WID including Core and Perf. part, then all new Core part specs have to be listed first
and then all new Perf. part specs.Indicate "Core part" or "Perf. part" under Comments for each spec.
By default a new specs can only be new for one of both parts.
Affected existing specifications [None in the case of Study Items]
Spec No. CR Subject of the CR Approved at plenary#Comments
NOTE: If this is a RAN WID including Core and Perf. part, then all new Core part specs have to be listed first
and then all new Perf. part specs.Indicate "Core part" or "Perf. part" under Comments for each spec.
If an existing spec is affected by both (Core part and Perf. part), then it has to be listed twice with
appropriate approval dates.
11 Work item rapporteur(s)
CAO, Gen
Company: China Unicom
Email: caogen(at)chinaunicom(dot)cn
12 Work item leadership
RAN3 <Primary>, RAN2 <Secondary>
NOTE: If this is a RAN WID including Core and Perf. part, then this WG specifies the WG leading the Core part.
RAN WG4 is by default leading the Perf. part.
13 Supporting Individual Members
Supporting IM name
China Unicom
Huawei
Hisilicon
Nokia Networks
ZTE
Spreadtrum
Xinwei