B.3 Option of localized user plane of MBMS CN functions

23.2853GPPArchitecture enhancements for V2X servicesRelease 17TS

In this case user plane of MBMS CN functions (BM-SC and MBMS-GW) is located close to the eNB. This option is shown in Figure B.3-1.

Figure B.3-1: Localized user plane of MBMS CN functions

The user plane of MBMS CN functions can implement the following user plane functionalities:

– Receive user data from V2X Application Server over MB2-U.

– IP multicast distribution of MBMS user plane data to E-UTRAN (M1 reference point).

– Data synchronization (as for the BM-SC in legacy MBMS mechanisms).

– If used, apply favourable error resilient schemes, e.g. specialized MBMS codecs or Forward Error Correction schemes.

– If used, MBMS data encryption.

The procedure for Local MBMS based MBMS data delivery described in clause 5.4.2.2 makes this type of deployment option possible to improve V2X latency.

The separation of control and user plane functions in this option is for illustration only.

Annex C (informative):
Example hybrid operation modes for V2X communication over PC5 and LTE-Uu