diff options
| author | Harald Welte <laforge@osmocom.org> | 2023-05-11 13:14:20 +0200 |
|---|---|---|
| committer | laforge <laforge@osmocom.org> | 2023-07-21 10:52:07 +0000 |
| commit | 2ae45aba3f9d9000522b4ba7f0f72b92bce6278f (patch) | |
| tree | 5a21d9a19f763793c340b3761475d6dc3903f95f /include/osmo-bts/bts.h | |
| parent | 6c83527e62c27c22dbfbccb7a1cacaf2fa3194a0 (diff) | |
ASCI: VGCS/VBS RACH -> RSL TALKER/LISTENER DETECT
Random access is allowed on VGCS / VBS channels to access the uplink or
to detect listeners. Uplink Access from a listener is only reported once
after activating the channel. Uplink Access from a talker is reported
each time the uplink becomes occupied. RSL TALKER/LISTENER DETECT
messages are sent to the bsc.
The VGCS UPLINK GRANT message is sent by the BTS itself. Timer T3115 is
used to repeat the message up to NY2 times until one valid frame is
received from the MS (CM service request). The UPLINK BUSY / UPLINK FREE
message must be sent by the BSC.
The uplink is released by UPLINK RELEASE message from the MS or from the
BSC. Afterwards the UPLINK FREE message causes the MS to leave the
uplink without any acknowlege. An RSL REL-REQ must be used to terminate
the link locally. (Without layer 2 DISC procedure.)
Change-Id: I1bd07ab6802341b09a06e89df356665ffaf6d2bf
Related: OS#4851
Diffstat (limited to 'include/osmo-bts/bts.h')
| -rw-r--r-- | include/osmo-bts/bts.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/osmo-bts/bts.h b/include/osmo-bts/bts.h index a17278e4..191a9f4e 100644 --- a/include/osmo-bts/bts.h +++ b/include/osmo-bts/bts.h @@ -25,6 +25,7 @@ enum { BTS_CTR_RACH_RCVD, BTS_CTR_RACH_DROP, BTS_CTR_RACH_HO, + BTS_CTR_RACH_VGCS, BTS_CTR_RACH_CS, BTS_CTR_RACH_PS, BTS_CTR_AGCH_RCVD, @@ -239,6 +240,7 @@ struct gsm_bts { } interference; unsigned int t200_ms[7]; unsigned int t3105_ms; + unsigned int t3115_ms; /* VGCS UPLINK GRANT repeat timer */ struct { uint8_t overload_period; struct { @@ -261,6 +263,7 @@ struct gsm_bts { } rach; } load; uint8_t ny1; + uint8_t ny2; /* maximum number of repetitions for the VGCS UPLINK GRANT */ uint8_t max_ta; /* AGCH queuing */ |