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TR 23.751 (SA2)
Study on support of voice over WLAN

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(W-zip) V15.0.0    2017/06    26 p.


Rapporteur:  Mr. Drevon, Nicolas
See also:  –


The present document studies enhancements required for the support of VoIMS via Trusted and Untrusted WLAN access related with QoS differentiation for better user experience. This includes:
  • potential user plane impacts for the support of QoS differentiation;
  • potential UE-TWAN and UE-ePDG signalling enhancements for the support of QoS differentiation.


 

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1   Scope   Word-p. 6
2   References
3   Definitions, symbols and abbreviations
4   Architectural considerations
5   Key issues
6   Solutions
6.1   Solution 1: Solution to Key Issue#1 for untrusted WLAN based on IPsec child security associations
6.2   Solution 2: Solution to Key Issue #3 for untrusted WLAN based on reflective QoS
6.3   Solution 3: Solution to Key Issue #3 for sending TFTs to UE for untrusted WLAN based on IKEv2
6.4   Solution 4 to Key Issue #2: QoS differentiation for trusted WLAN based on DSCP mapping      Up
6.5   Solution 5 to Key Issue #4 using WLCP for sending TFTs to UE for trusted WLAN
6.6   Solution 6 to Key Issue #4 : Using WLCP bearers for sending TFTs to UE for trusted WLAN   Word-p. 19
6.7   Solution 7 to Key Issue #2: QoS differentiation for trusted WLAN based on WLCP bearer
7   Overall evaluation   Word-p. 24
8   Conclusions   Word-p. 25
A   Change history   Word-p. 26

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