When starting the first time there are no tables, doing a revision
check will fail and bsc_hack will exit without tables created. Do
the revision check within db_prepare and allow new tables to be
created before.
As it turns out, we start to allocate SDCCH for voice calls. Since we
don't yet implement switching from SDCCH to TCH during call setup,
this leads to various problems.
This is only relevant for TRX1, since TRX0 will always opwerate at constant
power. However, when channels on TRX0 are activated, we should provide
a reasonable BS poewr level.
* send more pending messages after RP-ACK of DELIVER has been received
* send pending messages after RP-SMMA has been received
* clear the transaction when sending CP-ACK in MT/DELIVER case
* always use the same transaction ID (since my assumptions about
SMS transactions were wrong)
* try to deliver messages through existing lchan rather than starting
paging
* send pending SM's after LOCATION UPDATE ACCEPT has been sent
You can now type commands like
'sms send extentsion 1003 This is a test message'
to trigger paging and delivery of the message 'This is a test message'
to the subscriber with extension 1003. There's also a variant that uses
the IMSI of the subscriber.
Messages sent this way are only attempted to deliver immediately. If
immediate delivery fails, there is no attempt to store it in the database.
SM's need to be transferred over their own RLL connection on SAPI3, rather than
the default SAPI0 connection that we're using for signalling like 04.08
RR/MM/CC.
This is not that much of a problem in the case of SMS SUBMIT from the MS to
the netwrok. In that case, the MS will start its primary RLL connection
with SAPI3, and we can just respond with SAPI3.
However, in the case of SMS DELIVER to a MS, we first page the MS, it then
establishes SAPI0. We then need to explicitly request the establishment of
a SAPI3 RLL connection, before we can send CP-DATA with our RP-DATA and DELIVER
RPDU
Now that we have the bsc_rll.c code, we can actually wait for a paging
response, and from the paging response request the establishment of the SAPI3
connection. We will be called back once that connection is open and can
successively start transmission of the SM.
A caller can call rll_establish(lchan, link_id) and a callback to the GSM RLL
code. He will get called back if the RLL link is established or receives some
error message, or the establishment times out.
We need this for proper SMS implementation, where we need to restablish a SAPI3
RLL link before transmitting the actual CP-DATA messages.
we now have the full path from the MS into the database (SUBMIT), as well as
back from the database to the MS (DELIVER). The database gets correctly
updated once a SMS has been successfully delivered.
What's still missing is the periodic scan over all undelivered messages,
trying to deliver them to the respective MS. So far, you have to manually
trigger this on the telnet interface with 'sms send pending 1'
The existing code always paged for a TCH/F, which is really wasteful
when considering the delivery of SMS messages.
Also, increase the verbosity of the debug message a bit.
So far, we immediately disable the RF channel without following a proper
RLL RELEASE procedure. This patch changes this.
If we locally terminate the connection, the channel allocator now triggers a
RLL RELEASE REQuest, which is responsed by the MS with a RLL RELEASE CONFirm,
based on which we send the RF CHANnel RELease to the BTS.
If the MS terminates the connection, we receive a RLL RELEASE INDication,
based on which we trigger RF CHANnel RELease to the BTS.
Holger Hans Peter Freyther
Harald Welte