Fix MS TO measurement representation
* set proper flag when saving MS Timing Offset
* use gsm_subscriber's IMSI or lchan's name if bsc_subscriber is unknown
* add comments with spec reference
* store/display MS Timing Offset instead of raw Timing Offset field from
RSL
* Compute MS Timing Offset [-63; 192] from Timing Offset field [0; 255],
adjust structure gsm_meas_rep with proper type to store it
Change-Id: I7e003d23a6edb714c5f17688fd6a8edac131161d
Related: OS#1574
diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c
index 5ae707c..be687eb 100644
--- a/openbsc/src/libbsc/abis_rsl.c
+++ b/openbsc/src/libbsc/abis_rsl.c
@@ -41,6 +41,7 @@
#include <openbsc/signal.h>
#include <openbsc/meas_rep.h>
#include <openbsc/rtp_proxy.h>
+#include <openbsc/gsm_subscriber.h>
#include <osmocom/abis/e1_input.h>
#include <osmocom/gsm/rsl.h>
#include <osmocom/core/talloc.h>
@@ -1369,8 +1370,14 @@
int i;
const char *name = "";
- if (lchan && lchan->conn)
- name = bsc_subscr_name(lchan->conn->bsub);
+ if (lchan && lchan->conn) {
+ if (lchan->conn->bsub)
+ name = bsc_subscr_name(lchan->conn->bsub);
+ else if (lchan->conn->subscr)
+ name = lchan->conn->subscr->imsi;
+ else
+ name = lchan->name;
+ }
DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr);
@@ -1379,6 +1386,7 @@
print_meas_rep_uni(&mr->ul, "ul");
DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power);
+
if (mr->flags & MEAS_REP_F_MS_TO)
DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset);
@@ -1452,9 +1460,11 @@
mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER);
/* Optional Parts */
- if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET))
- mr->ms_timing_offset =
- *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET);
+ if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) {
+ /* According to 3GPP TS 48.058 § MS Timing Offset = Timing Offset field - 63 */
+ mr->ms_timing_offset = *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET) - 63;
+ mr->flags |= MEAS_REP_F_MS_TO;
+ }
if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) {
struct e1inp_sign_link *sign_link = msg->dst;
diff --git a/openbsc/src/libbsc/bsc_vty.c b/openbsc/src/libbsc/bsc_vty.c
index c1882fc..3c70580 100644
--- a/openbsc/src/libbsc/bsc_vty.c
+++ b/openbsc/src/libbsc/bsc_vty.c
@@ -1062,8 +1062,7 @@
mr->flags & MEAS_REP_F_DL_VALID ? " " : "DLinval ",
VTY_NEWLINE);
if (mr->flags & MEAS_REP_F_MS_TO)
- vty_out(vty, "%s MS Timing Offset: %u%s", prefix,
- mr->ms_timing_offset, VTY_NEWLINE);
+ vty_out(vty, "%s MS Timing Offset: %d%s", prefix, mr->ms_timing_offset, VTY_NEWLINE);
if (mr->flags & MEAS_REP_F_MS_L1)
vty_out(vty, "%s L1 MS Power: %u dBm, Timing Advance: %u%s",
prefix, mr->ms_l1.pwr, mr->ms_l1.ta, VTY_NEWLINE);
diff --git a/openbsc/src/libmsc/smpp_openbsc.c b/openbsc/src/libmsc/smpp_openbsc.c
index 2703a24..1671a62 100644
--- a/openbsc/src/libmsc/smpp_openbsc.c
+++ b/openbsc/src/libmsc/smpp_openbsc.c
@@ -437,8 +437,8 @@
append_tlv_u8(req_tlv, TLVID_osmo_ta, mr->ms_l1.ta);
ms_dbm = ms_pwr_dbm(lchan->ts->trx->bts->band, mr->ms_l1.pwr);
append_tlv_u8(req_tlv, TLVID_osmo_ms_l1_txpwr, ms_dbm);
- } else if (mr->flags & MEAS_REP_F_MS_TO)
- append_tlv_u8(req_tlv, TLVID_osmo_ta, mr->ms_timing_offset);
+ } else if (mr->flags & MEAS_REP_F_MS_TO) /* Save Timing Offset field = MS Timing Offset + 63 */
+ append_tlv_u8(req_tlv, TLVID_osmo_ta, mr->ms_timing_offset + 63);
append_tlv_u16(req_tlv, TLVID_osmo_rxlev_ul,
rxlev2dbm(ul_meas->full.rx_lev));
diff --git a/openbsc/src/utils/meas_db.c b/openbsc/src/utils/meas_db.c
index a3b694e..d81efca 100644
--- a/openbsc/src/utils/meas_db.c
+++ b/openbsc/src/utils/meas_db.c
@@ -114,8 +114,7 @@
SCK_OK(st->db, sqlite3_bind_int(st->stmt_ins_mr, 6, mr->bs_power));
if (mr->flags & MEAS_REP_F_MS_TO)
- SCK_OK(st->db, sqlite3_bind_int(st->stmt_ins_mr, 7,
- mr->ms_timing_offset));
+ SCK_OK(st->db, sqlite3_bind_int(st->stmt_ins_mr, 7, mr->ms_timing_offset));
else
SCK_OK(st->db, sqlite3_bind_null(st->stmt_ins_mr, 7));
diff --git a/openbsc/src/utils/meas_vis.c b/openbsc/src/utils/meas_vis.c
index 316d203..77194de 100644
--- a/openbsc/src/utils/meas_vis.c
+++ b/openbsc/src/utils/meas_vis.c
@@ -200,7 +200,7 @@
COLS-40, rxlev2dbm(lq->rx_lev), -110, -47,
1, 2, FALSE, FALSE);
//IsVisibleObj(ms->ul.cdk) = FALSE;
- snprintf(msu->label, sizeof(msu->label), "</%d>%1d<!%d> %3d %2u %2u %4u",
+ snprintf(msu->label, sizeof(msu->label), "</%d>%1d<!%d> %3d %2u %2d %4u",
qual_col, lq->rx_qual, qual_col, pwr,
ms->mr.ms_l1.ta, ms->mr.ms_timing_offset,
now - msu->last_update);