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TR 23.750 (SA2)
Study for
Robust Call Setup
for VoLTE Subscriber in LTE

3GPP‑Page   full‑ToC    
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V14.0.0 (Wzip)  2016/06  30 p.


Rapporteur:  Mr. Wu, Xiaobo
See also:

The study is to investigate solutions to minimize call setup failure and improve user experience for VoLTE subscriber in LTE with bad coverage. The study shall consider the scenarios where UE is both PS and CS registered or only PS registered and UE is already IMS registered initially.

full Table of Contents for  TR 23.750  Word version:   14.0.0

 

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1  ScopeWord-p. 6
2  References
3  Definitions and abbreviationsWord-p. 7
4  Architectural Assumption
5  Key Issues
6  SolutionsWord-p. 8
6.1  Solution #1 to key issue 1: VoLTE→(e)CSFBUp
6.1a  Solution #1a to key issue 1a: VoLTE→CSFBWord-p. 15
6.2  Solution #2 to key issue 1: SRVCC temporary rejection
6.3  Solution #3: Optimised CSFB Procedure
6.4  Solution #4: UE radio capabilities consideration during PLMN and RAT
6.5  Solution #5: Enabling provisioning of target cell(s) system information
6.6  Solution #6 to key issue 1: Retry in CS domainUp
7  Overall Evaluation
8  ConclusionsWord-p. 29
A  Change historyWord-p. 30

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