Change in ...libosmocore[master]: libosmogsm/l1sap.h: extend ph_rach_ind_param with lqual_cb

Vadim Yanitskiy gerrit-no-reply at
Wed Jul 10 15:48:33 UTC 2019

Vadim Yanitskiy has submitted this change and it was merged. ( )

Change subject: libosmogsm/l1sap.h: extend ph_rach_ind_param with lqual_cb

libosmogsm/l1sap.h: extend ph_rach_ind_param with lqual_cb

The link quality, defined by C/I (Carrier-to-Interference) ratio,
can be computed from the training sequence of each burst, where we
can compare the "ideal" training sequence with the actual training
sequence and then express that in cB (centiBels, dB * 10).

By analogy with both RSSI and ToA, it can be used to filter out
false-positive detections and ghost Access Bursts.

Change-Id: Ie2a66ebd040b61d6daf49e04bf8a84d3d64764ee
M include/osmocom/gsm/l1sap.h
1 file changed, 1 insertion(+), 0 deletions(-)

  laforge: Looks good to me, but someone else must approve
  osmith: Looks good to me, approved
  Jenkins Builder: Verified

diff --git a/include/osmocom/gsm/l1sap.h b/include/osmocom/gsm/l1sap.h
index 9a9c008..19cc87a 100644
--- a/include/osmocom/gsm/l1sap.h
+++ b/include/osmocom/gsm/l1sap.h
@@ -68,6 +68,7 @@
 	int8_t rssi;		/*!< RSSI of RACH indication */
 	uint16_t ber10k;	/*!< BER in units of 0.01% */
 	int16_t acc_delay_256bits;/* !< Burst TA Offset in 1/256th bits */
+	int16_t lqual_cb;	/* !< Link quality in centiBel */
 /*! for PH-[UNIT]DATA.{req,ind} | PH-RTS.ind */

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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Change-Id: Ie2a66ebd040b61d6daf49e04bf8a84d3d64764ee
Gerrit-Change-Number: 14683
Gerrit-PatchSet: 2
Gerrit-Owner: Vadim Yanitskiy <axilirator at>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Vadim Yanitskiy <axilirator at>
Gerrit-Reviewer: laforge <laforge at>
Gerrit-Reviewer: osmith <osmith at>
Gerrit-Reviewer: pespin <pespin at>
Gerrit-MessageType: merged
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