Architectural enhancements for 5G multicast-broadcast services
The present document specifies architectural enhancements to the 5G system using NR to support multicast and broadcast communication services, complying to the requirements in TS 22.146 [2], TS 22.246 [3] and TS 22.261 [4]. This document encompasses support for functions such as how to deliver multicast and broadcast communications including support within certain location areas, mobility, MBS session management, policy control and QoS, and support for features e.g. group message delivery.
The present document also covers interworking with E-UTRAN and EPC based eMBMS for Public Safety (e.g. MCX services).