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Content for TR 23.789 Word version: 13.0.0

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5 Key Issues p. 7

5.1 Key Issue 1 - Monitoring p. 7

5.1.1 Description p. 7

5.1.2 Required Functionality p. 7

6 Solutions p. 8

6.1 Solution 1: Monitoring via HSS p. 8

6.1.1 Description p. 8

6.1.1.1 General p. 8

6.1.1.2 Flow for Monitoring event configuration p. 8

6.1.1.3 Monitoring event reporting flows p. 10

6.1.1.3.1 Monitoring event reporting via HSS p. 10

6.1.1.4 Specific Monitoring Event handling p. 10

6.1.2 Impacts on existing nodes and functionality p. 11

6.1.3 Solution Evaluation p. 11

6.2 Solution 2: Monitoring via PCC p. 11

6.2.1 Description p. 11

6.2.1.1 General p. 11

6.2.1.2 Flow for Monitoring event configuration p. 12

6.2.1.2.1 Information flow to configure loss of connectivity p. 14

6.2.1.3 Monitoring event reporting flows p. 14

6.2.1.3.1 Monitoring event reporting via PCRF p. 14

6.2.1.3.2 Information flow to retrieve location p. 15

6.2.1.4 Specific Monitoring Event handling p. 15

6.2.2 Impacts on existing nodes and functionality p. 16

6.2.3 Solution Evaluation p. 17

6.3 Solution 3 - Monitoring via MME/SGSN and HSS p. 17

6.3.1 General description p. 17

6.3.1.1 MTC monitoring configuration at SGSN/MME p. 17

6.3.1.2 Reporting of monitoring events from SGSN/MME p. 19

6.3.1.3 Charging p. 19

6.3.1.4 Specific Monitoring Event Handling p. 20

6.3.2 Impacts on existing nodes and functionality p. 21

6.3.3 Solution evaluation p. 21

6.4 Solution 4: Monitor UE location using GMLC p. 22

6.4.1 Description p. 22

6.4.1.1 General p. 23

6.4.1.2 Flow for Monitoring UE location using GMLC p. 23

6.4.2 Impacts on existing nodes and functionality p. 24

6.4.3 Solution Evaluation p. 24

7 Overall Evaluation p. 24

7.1 General p. 24

7.2 Roaming status of MTC device p. 24

7.2.1 One-time Roaming status of UE p. 24

7.2.2 Change in Roaming status of UE p. 25

7.3 Serving Network of MTC device p. 26

7.4 Location of MTC device p. 26

7.4.1 One-time retrieval of UE Location p. 26

7.4.1.1 Current Location of UE p. 26

7.4.1.2 Last known Location of UE p. 27

7.4.2 Change in UE Location p. 28

7.4.2.1 Reporting upon change of location area p. 28

7.4.2.2 Continuous Reporting of Location p. 29

8 Conclusions p. 30

8.1 General Conclusions p. 30

8.2 Conclusions for Specific Monitoring Events p. 31

8.2.1 Roaming status, and Serving Network of the UE p. 31

8.2.2 Location of the UE p. 31

8.2.3 Change in association of the MTC Device and UICC p. 31

8.2.4 Loss of connectivity p. 31

8.2.5 UE Reachability p. 31

8.2.6 Communication Failure p. 31

8.2.7 Reporting the number of UEs present in a certain area p. 32

$ Change History p. 33