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bhargava_abhyankar gerrit-no-reply at lists.osmocom.orgReview at https://gerrit.osmocom.org/434 Update parameters in osmo-bts for 11 bit RACH Based on the indication from L1, number of bits in RACH and burst type is determined. Appropriate parameters are filled in osmo-bts. These parameters are sent to osmo-pcu for processing of the RACH. Change-Id: I93831ddfb3f31b637e6a576f23a9bb4557758582 --- M src/osmo-bts-sysmo/l1_if.c 1 file changed, 25 insertions(+), 8 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/34/434/1 diff --git a/src/osmo-bts-sysmo/l1_if.c b/src/osmo-bts-sysmo/l1_if.c index 168e004..64bf65e 100644 --- a/src/osmo-bts-sysmo/l1_if.c +++ b/src/osmo-bts-sysmo/l1_if.c @@ -919,7 +919,7 @@ struct gsm_lchan *lchan; struct osmo_phsap_prim *l1sap; uint32_t fn; - uint8_t ra, acc_delay = 0; + uint16_t ra = 0, acc_delay = 0, is_11bit = 0, burst_type = 0, temp = 0; int rc; /* increment number of busy RACH slots, if required */ @@ -941,16 +941,36 @@ btsb->load.rach.access++; dump_meas_res(LOGL_DEBUG, &ra_ind->measParam); + burst_type = ra_ind->burstType; - if (ra_ind->msgUnitParam.u8Size != 1) { + if ((ra_ind->msgUnitParam.u8Size != 1) && + (ra_ind->msgUnitParam.u8Size != 2)) { LOGP(DL1C, LOGL_ERROR, "PH-RACH-INDICATION has %d bits\n", ra_ind->sapi); msgb_free(l1p_msg); return 0; } + if (ra_ind->msgUnitParam.u8Size == 2) { + is_11bit = 1; + ra = ra_ind->msgUnitParam.u8Buffer[0]; + ra = ra << 3; + temp = (ra_ind->msgUnitParam.u8Buffer[1] & 0x7); + ra = ra | temp; + + LOGP(DL1P, LOGL_DEBUG, "11 bit RACH :%d and burst type :%d ", + ra, burst_type); + LOGP(DL1P, LOGL_DEBUG, " 0th byte :%d \n and 1st byte: %d \n", + ra_ind->msgUnitParam.u8Buffer[0], + ra_ind->msgUnitParam.u8Buffer[1]); + } else { + is_11bit = 0; + ra = ra_ind->msgUnitParam.u8Buffer[0]; + LOGP(DL1P, LOGL_DEBUG, "8 bit RACH ra:%d and burst type %d\n", + ra, burst_type); + } + fn = ra_ind->u32Fn; - ra = ra_ind->msgUnitParam.u8Buffer[0]; rc = msgb_trim(l1p_msg, sizeof(*l1sap)); if (rc < 0) MSGB_ABORT(l1p_msg, "No room for primitive data\n"); @@ -960,11 +980,8 @@ l1sap->u.rach_ind.ra = ra; l1sap->u.rach_ind.acc_delay = acc_delay; l1sap->u.rach_ind.fn = fn; - - /* Initialising the parameters needs to be handled when 11 bit RACH */ - - l1sap->u.rach_ind.is_11bit = 0; - l1sap->u.rach_ind.burst = GSM_L1_BURST_TYPE_ACCESS_0; + l1sap->u.rach_ind.is_11bit = is_11bit; /* no of bits in 11 bit RACH */ + l1sap->u.rach_ind.burst = burst_type; /* type of burst */ if (!lchan || lchan->ts->pchan == GSM_PCHAN_CCCH || lchan->ts->pchan == GSM_PCHAN_CCCH_SDCCH4) -- To view, visit https://gerrit.osmocom.org/434 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I93831ddfb3f31b637e6a576f23a9bb4557758582 Gerrit-PatchSet: 1 Gerrit-Project: osmo-bts Gerrit-Branch: master Gerrit-Owner: bhargava_abhyankar <Bhargava.Abhyankar at radisys.com>