Feature #4046
closedBSC support for generating ETWS primary notifications
100%
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 an RR APPLICATION INFO message sent over L3 DCCH to all MS with DCH established
- 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 BSC. 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
Checklist
- generating + sending PAGING REQUEST TYPE 1 with ETWS primary notification
- designing method how pre-encoded PAGING REQUEST TYPE 1 can be sent over A-bis
- generating + sending RR APPLICATION INFO to all established DCCH
- designing method to inform PCU about primary ETWS notification
Related issues
Updated by laforge almost 5 years ago
- Related to Feature #4047: BTS support for generating ETWS primary notifications added
Updated by laforge almost 5 years ago
- Related to Feature #4048: PCU support for sending ETWS primary notifications added
Updated by laforge almost 5 years ago
- Related to Feature #3537: BSC support for CBSP (cell broadcast service protocol) added
Updated by laforge almost 5 years ago
The RSL PAGING CMD is not suitable for ETWS primary notification, as it only transfers a single identity to be paged, while the ETWS primary notification is more something like "background traffic" on the PCH. It fills the PCH PAGING CMD1 rest octets with (segments of) the ETWS primary notification.
So as a result, the best option is to have a vendor-specific Abis RSL message for enabling/disabling ETWS primary notification broadcasting in the BTS downlink PCH.
Updated by laforge over 4 years ago
- Checklist item generating + sending RR APPLICATION INFO to all established DCCH set to Done
- Status changed from New to In Progress
- % Done changed from 0 to 20
generating it from CBSP and sending it to dedicated channels now implemented in change-id I913d0237cffdcb95037da8489acef5f32a7fc02e available from laforge/cbsp branch of osmo-bsc.git.
Updated by laforge over 4 years ago
- Checklist item generating + sending PAGING REQUEST TYPE 1 with ETWS primary notification set to Done
- Checklist item designing method how pre-encoded PAGING REQUEST TYPE 1 can be sent over A-bis set to Done
- % Done changed from 20 to 60
Updated by laforge over 4 years ago
- Checklist item designing method to inform PCU about primary ETWS notification set to Done
- % Done changed from 60 to 80
Forwardign to PCU implemented in https://gerrit.osmocom.org/c/osmo-bts/+/15420 and tested in https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/15421
Updated by laforge over 4 years ago
- Status changed from In Progress to Resolved
- % Done changed from 80 to 100
patches merged
