Introduce new file for various measurements
The measurements include:
- DL bandwidth usage
- DL packet loss rate
- DL measurements by mobile
- UL measurements by BTS
In order to receive DL measurements from mobile, it must be enabled via
system information message at BSC.
diff --git a/src/gprs_rlcmac_meas.cpp b/src/gprs_rlcmac_meas.cpp
new file mode 100644
index 0000000..75da835
--- /dev/null
+++ b/src/gprs_rlcmac_meas.cpp
@@ -0,0 +1,190 @@
+/* Measurements
+ *
+ * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <gprs_rlcmac.h>
+#include <gprs_debug.h>
+#include <pcu_l1_if.h>
+
+#include <string.h>
+#include <errno.h>
+
+/*
+ * downlink measurement
+ */
+
+/* received Measurement Report */
+int gprs_rlcmac_meas_rep(Packet_Measurement_Report_t *pmr)
+{
+ NC_Measurement_Report_t *ncr;
+ NC_Measurements_t *nc;
+ int i;
+
+ LOGP(DRLCMACMEAS, LOGL_INFO, "Measuement Report of TLLI=0x%08x:",
+ pmr->TLLI);
+
+ switch (pmr->UnionType) {
+ case 0:
+ ncr = &pmr->u.NC_Measurement_Report;
+ LOGPC(DRLCMACMEAS, LOGL_INFO, " NC%u Serv %d dbm",
+ ncr->NC_MODE + 1,
+ ncr->Serving_Cell_Data.RXLEV_SERVING_CELL - 110);
+ for (i = 0; i < ncr->NUMBER_OF_NC_MEASUREMENTS; i++) {
+ nc = &ncr->NC_Measurements[i];
+ LOGPC(DRLCMACMEAS, LOGL_DEBUG, ", Neigh %u %d dbm",
+ nc->FREQUENCY_N, nc->RXLEV_N - 110);
+ }
+ LOGPC(DRLCMACMEAS, LOGL_INFO, "\n");
+
+ break;
+ case 1:
+ LOGPC(DRLCMACMEAS, LOGL_INFO,
+ " <EXT Reporting not supported!>\n");
+ break;
+ }
+
+ return 0;
+}
+
+
+/*
+ * uplink measurement
+ */
+
+/* RSSI values received from MS */
+int gprs_rlcmac_rssi(struct gprs_rlcmac_tbf *tbf, int8_t rssi)
+{
+ struct timeval now_tv, *rssi_tv = &tbf->meas.rssi_tv;
+ uint32_t elapsed;
+
+ tbf->meas.rssi_sum += rssi;
+ tbf->meas.rssi_num++;
+
+ gettimeofday(&now_tv, NULL);
+ elapsed = ((now_tv.tv_sec - rssi_tv->tv_sec) << 7)
+ + ((now_tv.tv_usec - rssi_tv->tv_usec) << 7) / 1000000;
+ if (elapsed < 128)
+ return 0;
+
+ gprs_rlcmac_rssi_rep(tbf);
+
+ /* reset rssi values and timestamp */
+ memcpy(rssi_tv, &now_tv, sizeof(struct timeval));
+ tbf->meas.rssi_sum = 0;
+ tbf->meas.rssi_num = 0;
+
+ return 0;
+}
+
+/* Give RSSI report */
+int gprs_rlcmac_rssi_rep(struct gprs_rlcmac_tbf *tbf)
+{
+ /* No measurement values */
+ if (!tbf->meas.rssi_num)
+ return -EINVAL;
+
+ LOGP(DRLCMACMEAS, LOGL_INFO, "UL RSSI of TLLI=0x%08x: %d dBm\n",
+ tbf->tlli, tbf->meas.rssi_sum / tbf->meas.rssi_num);
+
+ return 0;
+}
+
+
+/*
+ * lost frames
+ */
+
+/* Lost frames reported from RLCMAC layer */
+int gprs_rlcmac_received_lost(struct gprs_rlcmac_tbf *tbf, uint16_t received,
+ uint16_t lost)
+{
+ struct timeval now_tv, *loss_tv = &tbf->meas.dl_loss_tv;
+ uint32_t elapsed;
+ uint16_t sum = received + lost;
+
+ /* No measurement values */
+ if (!sum)
+ return -EINVAL;
+
+ LOGP(DRLCMACMEAS, LOGL_DEBUG, "DL Loss of TLLI 0x%08x: Received: %4d "
+ "Lost: %4d Sum: %4d\n", tbf->tlli, received, lost, sum);
+
+ tbf->meas.dl_loss_received += received;
+ tbf->meas.dl_loss_lost += lost;
+
+ gettimeofday(&now_tv, NULL);
+ elapsed = ((now_tv.tv_sec - loss_tv->tv_sec) << 7)
+ + ((now_tv.tv_usec - loss_tv->tv_usec) << 7) / 1000000;
+ if (elapsed < 128)
+ return 0;
+
+ gprs_rlcmac_lost_rep(tbf);
+
+ /* reset lost values and timestamp */
+ memcpy(loss_tv, &now_tv, sizeof(struct timeval));
+ tbf->meas.dl_loss_received = 0;
+ tbf->meas.dl_loss_lost = 0;
+
+ return 0;
+}
+
+/* Give Lost report */
+int gprs_rlcmac_lost_rep(struct gprs_rlcmac_tbf *tbf)
+{
+ uint16_t sum = tbf->meas.dl_loss_lost + tbf->meas.dl_loss_received;
+
+ /* No measurement values */
+ if (!sum)
+ return -EINVAL;
+
+ LOGP(DRLCMACMEAS, LOGL_INFO, "DL packet loss of IMSI=%s / TLLI=0x%08x: "
+ "%d%%\n", tbf->meas.imsi, tbf->tlli,
+ tbf->meas.dl_loss_lost * 100 / sum);
+
+ return 0;
+}
+
+
+/*
+ * downlink bandwidth
+ */
+
+int gprs_rlcmac_dl_bw(struct gprs_rlcmac_tbf *tbf, uint16_t octets)
+{
+ struct timeval now_tv, *bw_tv = &tbf->meas.dl_bw_tv;
+ uint32_t elapsed;
+
+ tbf->meas.dl_bw_octets += octets;
+
+ gettimeofday(&now_tv, NULL);
+ elapsed = ((now_tv.tv_sec - bw_tv->tv_sec) << 7)
+ + ((now_tv.tv_usec - bw_tv->tv_usec) << 7) / 1000000;
+ if (elapsed < 128)
+ return 0;
+
+ LOGP(DRLCMACMEAS, LOGL_INFO, "DL Bandwitdh of IMSI=%s / TLLI=0x%08x: "
+ "%d KBits/s\n", tbf->meas.imsi, tbf->tlli,
+ tbf->meas.dl_bw_octets / elapsed);
+
+ /* reset bandwidth values timestamp */
+ memcpy(bw_tv, &now_tv, sizeof(struct timeval));
+ tbf->meas.dl_bw_octets = 0;
+
+ return 0;
+}
+