Change in ...osmo-bts[master]: osmo-bts-trx/scheduler: rx_data_fn(): provide actual C/I ratio to L1SAP

fixeria gerrit-no-reply at lists.osmocom.org
Sun Jul 7 13:22:04 UTC 2019


fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/14689


Change subject: osmo-bts-trx/scheduler: rx_data_fn(): provide actual C/I ratio to L1SAP
......................................................................

osmo-bts-trx/scheduler: rx_data_fn(): provide actual C/I ratio to L1SAP

Change-Id: Iea0dad65e9bc511f99375fd3ee2eb44e47a6168f
---
M src/osmo-bts-trx/scheduler_trx.c
1 file changed, 13 insertions(+), 2 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/89/14689/1

diff --git a/src/osmo-bts-trx/scheduler_trx.c b/src/osmo-bts-trx/scheduler_trx.c
index 5a24dda..327ee6e 100644
--- a/src/osmo-bts-trx/scheduler_trx.c
+++ b/src/osmo-bts-trx/scheduler_trx.c
@@ -889,6 +889,8 @@
 	uint8_t *rssi_num = &chan_state->rssi_num;
 	int32_t *toa256_sum = &chan_state->toa256_sum;
 	uint8_t *toa_num = &chan_state->toa_num;
+	int32_t *ci_cb_sum = &chan_state->ci_cb_sum;
+	uint8_t *ci_cb_num = &chan_state->ci_cb_num;
 	uint8_t l2[GSM_MACBLOCK_LEN], l2_len;
 	int n_errors, n_bits_total;
 	uint16_t ber10k;
@@ -917,6 +919,8 @@
 		*rssi_num = 0;
 		*toa256_sum = 0;
 		*toa_num = 0;
+		*ci_cb_sum = 0;
+		*ci_cb_num = 0;
 	}
 
 	/* update mask + RSSI */
@@ -926,6 +930,12 @@
 	*toa256_sum += bi->toa256;
 	(*toa_num)++;
 
+	/* C/I: Carrier-to-Interference ratio (in centiBels) */
+	if (bi->flags & TRX_BI_F_CI_CB) {
+		*ci_cb_sum += bi->ci_cb;
+		(*ci_cb_num)++;
+	}
+
 	/* copy burst to buffer of 4 bursts */
 	burst = *bursts_p + bid * 116;
 	memcpy(burst, bi->burst + 3, 58);
@@ -971,13 +981,14 @@
 			      n_errors, n_bits_total,
 			      *rssi_sum / *rssi_num,
 			      *toa256_sum / *toa_num);
+	lqual_cb = *ci_cb_num ? (*ci_cb_sum / *ci_cb_num) : 0;
 	ber10k = compute_ber10k(n_bits_total, n_errors);
 	return _sched_compose_ph_data_ind(l1t, bi->tn, *first_fn,
 					  chan, l2, l2_len,
 					  *rssi_sum / *rssi_num,
 					  *toa256_sum / *toa_num,
-					  0 /* FIXME: AVG C/I */,
-					  ber10k, PRES_INFO_UNKNOWN);
+					  lqual_cb, ber10k,
+					  PRES_INFO_UNKNOWN);
 }
 
 /*! \brief a single PDTCH burst was received by the PHY, process it */

-- 
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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: Iea0dad65e9bc511f99375fd3ee2eb44e47a6168f
Gerrit-Change-Number: 14689
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <axilirator at gmail.com>
Gerrit-MessageType: newchange
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