TR 33.883
Study on Security enhancements for 5G Multicast-Broadcast services
Phase 2
V18.0.1 (Wzip)
2023/06 16 p.
- Rapporteur:
- Mr. Guo, Longhua
HUAWEI TECH. GmbH
full Table of Contents for TR 33.883 Word version: 18.0.1
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
4 Assumptions
5 Key issues
6 Proposed solutions
7 Conclusions
$ Change history
1 Scope p. 6
The present document is to identify key issues, potential security and privacy requirements and solutions with respect to enhancement for 5G multicast-broadcast services. Specifically:
- Study the security enhancement enabling UE's receiving Multicast MBS Session data in RRC Inactive state. Analysis whether existing security mechanisms for UE in RRC connected state can be reused or new security enhancement are needed.
- Study the security impact and potential enhancement if supporting feasible and efficient resource utilization for the same broadcast content to be provided to 5G MOCN network sharing scenarios.
- Other security issues if identified.
2 References p. 6
3 Definitions of terms, symbols and abbreviations p. 6
4 Assumptions p. 7
5 Key issues p. 7
5.1 Key issue#1: security handling in MOCN network sharing scenario p. 7
5.2 Key issue#2: TMGI Protection p. 8
6 Proposed solutions p. 8
6.1 Mapping of solutions to key issues p. 8
6.2 Solution #1: MBS Traffic Key distribution for MOCN deployment scenarios p. 8
6.2.1 Introduction p. 8
6.2.2 Solution details p. 9
6.2.2.1 General p. 9
6.2.2.2 Control plane procedures p. 9
6.2.2.3 User plane procedures p. 9
6.2.2.4 Key update procedure p. 10
6.2.3 System impact p. 10
6.2.4 Evaluation p. 10
6.3 Solution #2: MOCN security handling for MBS p. 10
6.3.1 Introduction p. 10
6.3.2 Solution details p. 11
6.3.2.1 MOCN Broadcast Procedure p. 11
6.3.2.2 Common MOCN TMGI p. 11
6.3.2.3 MOCN keys MSK MTK p. 12
6.3.3 System impact p. 13
6.3.4 Evaluation p. 13
6.4 Solution #3: security protection for UEs in MOCN network sharing scenario p. 14
6.4.1 Introduction p. 14
6.4.2 Solution details p. 14
6.4.3 System impact p. 15
6.4.4 Evaluation p. 15
7 Conclusions p. 15
$ Change history p. 16
