diff options
| author | Keith <keith@rhizomatica.org> | 2021-09-26 22:13:23 +0200 |
|---|---|---|
| committer | laforge <laforge@osmocom.org> | 2021-09-28 18:54:18 +0000 |
| commit | b7c4d801ffb1494012042bd23d240dc198accb0c (patch) | |
| tree | e6e22a951ad9f1bb8944f70edffb6a089bd565dc /src/osmo-bsc/abis_rsl.c | |
| parent | df612507d656305d92e1bae12983af6d51ddf35c (diff) | |
Fix MEAS parsing, as Ericsson RBS reports TA shifted by 2 bits.
This fixes call setup issues when more than ~1km from the tower.
NOTE: We use the last reported TA from the UE in the CHANnel ACTIVation.
When the UE is more than 1km from the tower, (unshifted) TA in the
measurement report can be 8 or greater. Once we send TA of 8 in the
CHAN ACTIV message, the lchan is unrecoverable.
Change-Id: I1c9bd5bf2fd126e62bcbec419f3499d2e0465559
Diffstat (limited to 'src/osmo-bsc/abis_rsl.c')
| -rw-r--r-- | src/osmo-bsc/abis_rsl.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/osmo-bsc/abis_rsl.c b/src/osmo-bsc/abis_rsl.c index c7399ebef..fb8e3867a 100644 --- a/src/osmo-bsc/abis_rsl.c +++ b/src/osmo-bsc/abis_rsl.c @@ -1319,9 +1319,10 @@ static int rsl_rx_meas_res(struct msgb *msg) if (val[0] & 0x04) mr->flags |= MEAS_REP_F_FPC; mr->ms_l1.ta = val[1]; - /* BS11 and Nokia reports TA shifted by 2 bits */ + /* BS11, Nokia and RBS report TA shifted by 2 bits */ if (msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11 - || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) + || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE + || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_RBS2000) mr->ms_l1.ta >>= 2; /* store TA for handover decision, and for intra-cell re-assignment */ mr->lchan->last_ta = mr->ms_l1.ta; |