Attention is currently required from: osmith. laforge has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bsc-nat/+/27704 )
Change subject: bssap: forward paging from MSC to all BSCs ......................................................................
Patch Set 1:
(1 comment)
Patchset:
PS1: I think it is ok to merge this kind of approach now, but for later we definitely want to be smarter about this. In a larger-than-trivial network you would likely quickly saturate the PCH (downlink CCCH) if you push all paging requests everywhere.
If the MSC wants to page the entire netwrok (bsc coverage area) it will say that in the paging request. But in most normal cases it would request to only page in a specific LA.
Dynamically learning from the LU is a smart idea, and I like it - but unfortuantely it wouldn't work at the moment we start (or restart) bsc-nat. Then we don't have a (complete) table of the LAC yet, and we wouldn't be able to rout paging, even while there are still phones out there in those LA/BTS which could be paged.
The other option would be to introduce some osmocom proprietary IE to the BSSMAP RESET which contains the LAC[s] of all the cells in the BSC. As we are developing osmo-bsc_nat primarily for use with osmo-bsc, this would be an elegant solution for the primary use caes.