TR 23.715 ★
Study on System enhancements
for Provision of Access
to Restricted Local Operator Services
by an Unauthenticated UE

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V16.0.0 (PDF) 2018/09 38 p.

essential Table of Contents for TR 23.715 Word version: 16.0.0

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2 References Word‑p. 6

3 Definitions, symbols and abbreviations Word‑p. 6

4 Architectural Assumptions and Requirements Word‑p. 7

5 Key Issues for EPC Word‑p. 8

5.1 Key Issue #EPC-1: Network indicating support for Restricted Local Operator Services and related UE behaviour Word‑p. 8

5.2 Key Issue #EPC-2: RLOS request indication Word‑p. 8

5.3 Key Issue #EPC-3: Support of unauthenticated UEs access to RLOS Word‑p. 8

5.4 Key Issue #EPC-4: Support of authenticated UEs access to RLOS Word‑p. 9

5.5 Void

5.6 Key Issue #EPC-6: Collection of charging information Word‑p. 9

5.7 Key Issue #EPC-7: Level of security Word‑p. 9

6 Key Issues for IMS Word‑p. 9

6.1 Key issue #IMS-1: Support for unauthenticated and authenticated user Word‑p. 9

6.2 Key issue #IMS-2: Identification of Restricted Local Operator Services at IMS layer Word‑p. 9

6.3 Key issue #IMS-3: Handling IMS session for Restricted Local Operator Service Word‑p. 10

6.4 Key issue #IMS-4: Support of emergency services by UEs attached for RLOS Word‑p. 10

7 Solutions Word‑p. 10

7.1 Solution #1: New SIB indicating support for Restricted Local Operator Services Word‑p. 10

7.2 Solution #2: EPC attach/PDN connection for RLOS from unauthenticated/authenticated UE Word‑p. 11

7.3 Solution #3: IMS procedures for RLOS Word‑p. 12

7.4 Solution #4: EPC solution using dedicated RLOS-APN Word‑p. 13

7.5 Solution #5: IMS solution with dedicated RLOS-APN and RLOS-specific P/S-CSCF Word‑p. 18

7.6 Solution #6: Solution to key issue #EPC-3 & #EPC-4 to enable IMS calls after initial attachment Word‑p. 21

7.7 Solution #7 to key issues #IMS-1, #IMS-2, and #IMS-3: IMS support for RLOS users Word‑p. 23

7.8 Solution #8: Solution to key issues #IMS-4: Support of emergency services by UEs attached for RLOS Word‑p. 25

7.9 Solution #9: PLMN selection, radio access for RLOS and overload handling Word‑p. 27

7.10 Solution #10: IMS solution with dedicated RLOS-APN and skipping IMS registration Word‑p. 28

7.11 Solution #11: Partial security solution for key issue #EPC-7 Word‑p. 31

8 Evaluation Word‑p. 32

9 Conclusions Word‑p. 36

$ Change History Word‑p. 38