TR 23.828 ★
Earthquake and Tsunami Warning System (ETWS) –
Requirements and Solutions

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V8.0.0 (Wzip) 2008/09 22 p.

essential Table of Contents for TR 23.828 Word version: 8.0.0

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2 References Word‑p. 5

3 Definitions and abbreviations Word‑p. 5

4 Overview of ETWS Word‑p. 6

4.1 General Word‑p. 6

4.2 Technical requirements Word‑p. 6

4.3 Architectural considerations Word‑p. 6

5 Alternative 1: CBS with IMSI paging Word‑p. 6

5.1 General Word‑p. 6

5.2 Description Word‑p. 7

5.2.1 Solution for Idle-Mode UE Word‑p. 7

5.2.2 Suggested Information Elements Word‑p. 8

5.3 Summary Word‑p. 10

6 Alternative 2: E-MBMS Word‑p. 11

6.1 General Word‑p. 11

6.2 Description Word‑p. 12

6.2.1 Alternative 2-1: Pure eMBMS Word‑p. 12

6.2.2 Alternative 2: Primary Notification in Session Start Word‑p. 13

6.3 Summary Word‑p. 14

7 Alternative 3: MBMS Word‑p. 14

8 Alternative 4: Enhanced CBS over GERAN with idle and connected mode solutions Word‑p. 14

8.1 General Word‑p. 14

8.2 Idle mode description Word‑p. 14

8.3 Connected mode solution Word‑p. 16

9 Alternative 5: Enhanced CBS with Optional Information Elements Over Paging Message Word‑p. 17

9.1 Architecture Overview Word‑p. 17

9.2 High Level Description for GERAN, UTRAN and E-UTRAN Word‑p. 17

9.2.1 UE support Word‑p. 17

9.2.2 Solution for Idle-Mode UE Word‑p. 17

9.2.3 Solution for Connected-Mode UE Word‑p. 18

9.2.4 Security Word‑p. 18

9.3 Information Flow Word‑p. 18

10 Conclusion Word‑p. 21

$ Change history Word‑p. 22