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draft-TR 33.842 (SA3)
Study on Lawful Interception (LI) service in 5G

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V0.0.0 (Wzip)    2017/11    15 p.

Rapporteur:  Mr. McQuaid, Gerald
See also:  –

The present document is a study based on the output (both studies and normative specifications) from other 3GPP groups such as those for 5G Phase 1 as well as issues which arise out of regulatory LI requirements as well LI service specific issues such as those arising from national regulations. Potential solutions will be examined along with considerations of the trade-offs between the solutions will be described. These solutions can include changes to the LI service, architecture and/or stage 3 along.

It is expected that this TR will address stage 1, 2 and 3 aspects, and the completion of each stage's section will correspond at least to the overall Release 15 schedule with the corresponding start of SA 3 LI stage normative work.


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1   Scope   Word-p. 6
2   References
3   Definitions, symbols and abbreviations
4   Assumptions and requirements
5   Key Issues
5.1   LI Service Key Issues
5.2   LI Architecture Key Issues
5.2.1   Key Architecture Issue #2.1 - Roaming System Architecture
5.2.2   Key Architecture Issue #2.2 - Roaming Architecture for Non-3GPP Access
5.2.3   Key Architecture Issue #2.3 - Home routing interworking between 5GS and EPS
5.2.4   Key Architecture Issue #2.4 - SMS over NAS      Up
5.2.5   Key Architecture Issue #2.5 - Mobility Pattern
5.2.6   Key Architecture Issue #2.6 - Roaming
5.2.7   Key Architecture Issue #2.7 - Network Slicing
5.2.8   Key Architecture Issue #2.8 - Network Slicing
5.2.9   Key Architecture Issue #2.9 - New 5G Core Functions      Up
5.2.10   Key Architecture Issue #2.10 - N3IWF
5.2.11   Key Architecture Issue #2.11 - Network Function Discovery and Selection
5.2.12   Key Architecture Issue #2.12 - UE Policy
5.2.13   Key Architecture Issue #2.13 - Policy Control Subscription Information Management
5.2.14   Key Architecture Issue #2.14 - Location Services      Up
5.2.15   Key Architecture Issue #2.15 - IMS
5.2.16   Key Architecture Issue #2.16 - Extending CUPS LI model to 5G
5.3   LI Protocol Key Issues   Word-p. 15
6   Solutions
7   Deployment Considerations
8   Overall Evaluation
9   Conclusions
A   Evaluation of Retained Data Solutions   Word-p. 16
B   Change history

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