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TR 33.881
Study on Non-Seamless WLAN Offload (NSWO) in 5G System (5GS) using 3GPP credentials
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Partial Content
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V17.1.0 (Wzip)
2022/03 21 p.
Rapporteur:
Mr. M Dhanasekaran, Ranganathan
Nokia Corporation
full Table of Contents for
TR 33.881
Word version: 17.1.0
each clause number in
'red'
refers to the equivalent title in the Partial Content
0
Introduction
p. 5
1
Scope
p. 6
2
References
p. 6
3
Definitions of terms, symbols and abbreviations
p. 6
3.1
Terms
p. 6
3.2
Symbols
p. 6
3.3
Abbreviations
p. 7
4
Void
p. …
5
Key issues
p. 7
5.1
Key Issue #1: Support of EAP-AKA' authentication for NSWO
p. 7
5.1.1
Key issue details
p. 7
5.1.2
Security threats
p. 7
5.1.3
Potential security requirements
p. 7
6
Solutions
p. 8
6.1
Solution #1: Non-Seamless WLAN offload Authentication in 5GS
p. 8
6.1.1
Introduction
p. 8
6.1.2
Solution details
p. 8
6.1.2.1
Architectural overview
p. 8
6.1.2.2
NSWO authentication procedure
p. 9
6.1.3
System impact
p. 10
6.1.4
Evaluation
p. 11
6.2
Solution #2: NSWO authentication using credentials retrieved from UDM/ARPF
p. 11
6.2.1
Introduction
p. 11
6.2.2
Solution Details
p. 11
6.2.2.1
Architecture Overview
p. 11
6.2.2.2
Flows
p. 12
6.2.2.3
Subscriber Privacy
p. 14
6.2.2.4
Key derivation
p. 14
6.2.3
System impact
p. 14
6.2.4
Evaluation
p. 15
6.3
Solution #3: NSWO authentication using credentials retrieved from UDM/ARPF via HSS
p. 15
6.3.1
Introduction
p. 15
6.3.2
Solution Details
p. 15
6.3.2.1
Architecture Overview
p. 15
6.3.2.2
Flows
p. 17
6.3.2.3
SUPI Privacy
p. 18
6.3.2.4
Key derivation
p. 18
6.3.3
System impact
p. 18
6.3.4
Evaluation
p. 19
7
Conclusions
p. 19
7.1
Conclusion for key issue #1
p. 19
$
Change history
p. 21