Content for TR 23.709 Word version: 13.0.0
4 Scenarios p. 6
4.1 Scenario A: Downlink packet transmission to UE applying power saving function p. 6
4.2 Scenario B: Coordination of maximum latency between the application and the network p. 7
5 Potential solutions p. 8
5.1 Solution 1: Enabler for coordination of SCS/AS initiated downlink transmission p. 8
5.2 Solution 2: DL data buffering in S-GW or Gn-SGSN p. 8
5.2.1 Description p. 8
5.2.2 Impacts on existing nodes and functionality p. 16
5.2.3 Evaluation p. 16
5.3 Solution 3: Using Monitoring Event "UE Reachability" p. 16
5.3.1 Functional Description p. 16
5.3.2 UE Reachability configuration and reporting p. 17
5.3.3 Impacts on existing nodes and functionality p. 17
5.3.4 Evaluation p. 17
5.4 Solution 4: Availability Notification after DDN Failure p. 17
5.4.1 General p. 17
5.4.2 Architecture p. 18
5.4.3 Registration p. 19
5.4.4 Notification p. 19
5.4.5 Solution Impacts on Existing Nodes p. 21
5.4.6 Solution Evaluation p. 21
5.5 Solution 5: DL data buffering in SGW with SCS/AS Assistance p. 22
5.5.1 Description p. 22
5.5.2 Impacts on existing nodes and functionality p. 23
5.5.3 Evaluation p. 23
5.6 Void
5.7 Solution 7: Coordination using the UE application p. 23
5.7.1 Description p. 23
5.7.2 Recommendations for Cellular IoT application developers p. 25
5.7.3 Impacts on existing nodes and functionality p. 26
5.7.4 Evaluation p. 26
5.8 Solution 8: Enhanced Power Saving Mode (ePSM) p. 27
6 Evaluation p. 30
7 Conclusion p. 30
$ Change History p. 32
