Tech-invite 3GPPspace IETFspace

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Content for TR 23.853 Word version: 12.0.0

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4 Requirements p. 6

4.1 Scenarios p. 6

4.1.1 Scenario #1: Multiple PDN connections p. 6

4.1.2 Scenario #2: Multiple PDN connections from a CSG cell p. 6

4.1.3 Scenario #3: Multiple PDN connections and non-seamless WLAN offload p. 7

4.2 Architectural requirements p. 8

5 Solutions p. 8

5.1 Solution 1: Inter-APN Routing Policies p. 8

5.1.1 Description p. 8

5.1.2 Impact on existing nodes or functionality p. 10

5.2 Solution 2: Extension of existing ISRPs with addition of Filter Rules for Inter-APN Routing p. 10

5.2.1 Description p. 10

5.2.2 Impact on existing nodes or functionality p. 11

5.3 Solution 3: Consolidation of Solution 1 and Solution 2 p. 11

5.3.1 Description p. 11

5.3.2 Impact on existing nodes or functionality p. 12

5.4 Solution 4: Select the IP interface based on the routing configuration p. 13

5.4.1 Description p. 13

5.4.2 Impact on existing nodes or functionality p. 14

5.4.3 Evaluation p. 14

6 Other considerations p. 15

6.1 Potential Implications of Co-existence of OPIIS and IETF mechanisms p. 15

7 Conclusions p. 16

7.1 Analysis of solutions p. 16

7.2 Recommendation p. 16

$ Change history p. 17