gsmtap: Set signal level and SNR fields
lqual (containing C/I value) is passed instead of SNR, but let's have
that better than nothing.
Change-Id: Ibe9502d42c8bd1b984069e7fd805dde87ecbab0c
diff --git a/src/bts.cpp b/src/bts.cpp
index 2cf219a..8941403 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -434,6 +434,14 @@
uint8_t ts_no, uint8_t channel, uint32_t fn,
const uint8_t *data, unsigned int len)
{
+ struct pcu_l1_meas meas;
+ send_gsmtap_meas(categ, uplink, trx_no, ts_no, channel, fn, data, len, &meas);
+}
+
+void BTS::send_gsmtap_meas(enum pcu_gsmtap_category categ, bool uplink, uint8_t trx_no,
+ uint8_t ts_no, uint8_t channel, uint32_t fn,
+ const uint8_t *data, unsigned int len, struct pcu_l1_meas *meas)
+{
uint16_t arfcn;
/* check if category is activated at all */
@@ -444,7 +452,11 @@
if (uplink)
arfcn |= GSMTAP_ARFCN_F_UPLINK;
- gsmtap_send(m_bts.gsmtap, arfcn, ts_no, channel, 0, fn, 0, 0, data, len);
+ /* GSMTAP needs the SNR here, but we only have C/I (meas->link_qual).
+ Those are not the same, but there is no known way to convert them,
+ let's pass C/I instead of nothing */
+ gsmtap_send(m_bts.gsmtap, arfcn, ts_no, channel, 0, fn,
+ meas->rssi, meas->link_qual, data, len);
}
static inline bool tbf_check(gprs_rlcmac_tbf *tbf, uint32_t fn, uint8_t trx_no, uint8_t ts)