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Content for TR 23.976 Word version: 17.0.0

1… 5…

5 Push architecture overview p. 8

5.1 PS domain delivery networks supporting push p. 9

5.1.1 PS domain network elements and interfaces supporting Push p. 9

5.1.2 NRPCA with static IP address assignment p. 10

5.1.3 Push using SMS in the PS domain p. 10

5.1.3.1 Push notification with user connect scenario p. 11

5.1.3.2 Push broadcast scenario p. 11

5.1.3.3 Addressing p. 12

5.1.3.4 Delivery reliability p. 12

5.1.4 Push using Long-Lived PDP Context p. 13

5.1.4.1 Internet Control Message Protocol p. 13

5.1.4.2 PDP Context State Notification message p. 13

5.1.4.3 Radius Accounting START/STOP messages p. 14

5.1.4.4 COPS DRQ operation p. 14

5.1.4.5 Keep alive messages p. 14

5.1.4.6 PDP context re-establishment p. 14

5.1.4.7 Presence information p. 14

5.1.4.8 Comparison p. 14

5.1.5 NRPCA with dynamic IP address assignment p. 15

5.1.5.1 NRPCA with one GGSN per Push service APN p. 15

5.1.5.1.1 Deactivate PDP Context and update Address Resolver p. 17

5.1.5.1.2 Address Resolver and User-ID p. 18

5.1.5.2 NRPCA using a Presence server p. 18

5.1.5.3 Comparison of NRPCA approaches p. 19

5.2 CS domain delivery networks supporting Push p. 20

5.2.1 CS domain network elements and interfaces supporting Push p. 20

5.2.2 Push using SMS in the CS domain p. 21

5.3 IMS delivery networks supporting Push p. 21

5.3.1 IMS network elements and interfaces supporting Push p. 21

5.3.2 Push based on SIP p. 21

5.4 MBMS delivery networks supporting Push p. 22

5.5 WLAN delivery networks supporting Push p. 22

6 Analysis and conclusion p. 22

6.1 Comparison summary of Push requirements to Push mechanisms p. 22

6.2 Conclusion p. 27

A PDP Context State Notification message procedures p. 29

B NRPCA with no restrictions on APN and GPRS configuration p. 31

$ Change history p. 35