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Feature #4047
closedBTS support for generating ETWS primary notifications
Start date:
06/05/2019
Due date:
% Done:
100%
Spec Reference:
Description
ETWS (Earthquake and Tsunami Warning System) doesn't only use SMSCB, but also contains parts that ensure notification of all MS as quickly as possible. Specifically, this means
- there's a special PAGING REQUEST TYPE 1 sent on all sub-channels of the PCH
- there's a PACKET APPLICATION INFO message sent over PACCH to all MS with TBF established
This ticket is about implementing the required features in the BTS. One of the problems is that TS 48.058 (RSL) doesn't appear to have been updated for support of ETWS.
The paging messages are not encoded by the BSC but by the BTS; RSL PAGING COMMAND contains only the MS Identity, so there's no way to send a pre-encoded message with the ETWS bits in the rest octets.
Checklist
- PAGING REQUEST TYPE 1 with ETWS primary notification
- handing ETWS primary notification to PCU for transmission over PACCH
- segmentation of primary notification message
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