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Content for TR 22.968 Word version: 18.0.1

1… 2…

2 References p. 6

3 Definitions, symbols and abbreviations p. 6

3.1 Definitions p. 6

3.2 Abbreviations p. 7

4 Background p. 7

4.1 Regional requirements p. 7

4.1.1 Japan p. 7

4.1.2 United States of America (USA) p. 7

4.1.2.1 WARN Act Summary p. 7

4.1.2.1.1 Draft Conclusions and Working Assumptions p. 9

4.1.2.2 EAS Usage for Earthquake Warnings p. 11

4.1.3 Europe p. 11

4.1.3.1 Service objectives and features p. 11

5 Aspects p. 12

5.1 Duration of delivery time p. 12

5.1.1 Delivery time for most urgent warning notifications p. 13

5.2 Granularity of the distribution p. 13

5.3 Information element and volume p. 13

5.3.1 Information element and volume for most urgent warning notifications p. 14

5.4 Network Resilience p. 14

5.5 User Interface p. 14

5.6 Priority p. 15

5.7 Security p. 15

5.8 Support of roaming subscribers p. 15

5.9 Support in legacy handsets p. 15

5.10 Support of Warning Notification Providers p. 15

5.11 UE Aspects p. 15

5.11.1 User Interface p. 15

5.11.2 Support in legacy handsets p. 16

5.11.3 Physical Aspects p. 16

5.11.4 Enabling and disabling of PWS warning notifications p. 17

5.12 Subscription & Charging Aspects p. 17

5.13 Delivery & Receipt Confirmation Aspects p. 17

5.14 Periodic Testing Aspects p. 17

5.15 Relationship of PWS with Other Regulatory Aspects p. 17

5.16 Congestion situation p. 17

5.17 Enabling and disabling of PWS service p. 17

7 Conclusion p. 18

7.1 Overall Conclusions p. 18

A US - Public Warning System (PWS) use cases p. 19

A.1 Public Warning System (PWS) use cases p. 19

A.1.1 Common Parameters for use cases 1-5 p. 19

A.2 Use case #1 - Small Local Area p. 20

A.3 Use case #2 - Small Town or City p. 20

A.4 Use case #3 - Average Size City p. 20

A.5 Use case #4 - Large City or Metropolitan Area p. 21

A.6 Use case #5 - National (entire United States) p. 21

A.7.1 Use case: Provide Information to UE p. 22

A.7.2 Emergency Type p. 22

B Japan - Public Warning System (PWS) use cases Earthquake and Tsunami warning p. 23

B.1 General description - earthquake p. 23

B.1.1 Importance of shortening delivery time p. 23

B.1.1.1 Delivery time for Earthquake Early Warning p. 23

B.1.1.2 Delivery time analysis over current CBS p. 24

B.1.1.3 Effect of shortening delivery time p. 24

B.1.2 Information element and volume for Earthquake Early Warning p. 26

B.1.3 Earthquake Early Warning to handsets with some communications p. 26

B.2 Emergency types in the case of earthquake p. 27

B.3 General description - tsunami p. 27

B.3.1 Importance of shortening delivery time p. 27

B.3.1.1 Delivery time for Tsunami Warning p. 27

B.4 Correspondence of emergency type to message category p. 28

B.5 Priority control for PWS p. 28

B.5.1 Sequencing of warning notifications p. 28

C Europe - Public Warning System (PWS) use cases p. 30

C.1 Use case #01 - accident in nuclear power plant p. 30

C.2 Use case #02 - coastal flooding p. 30

C.3 Use case #03 - dam failure p. 30

C.4 Use case #04 - volcanic eruption p. 30

C.5 Use case #05 - accident in a chemical plant p. 30

D Threat in warning information delivery p. 31

D.1 Threat analysis p. 31

D.2 Key delivery p. 31

E Relationship between PWS and ETWS p. 32

F Service Provisioning p. 33

F.1 PWS overview p. 33

F.2 Provisioning p. 33

$ Change history p. 34