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-rw-r--r--src/osmo-bsc/handover_decision_2.c114
1 files changed, 65 insertions, 49 deletions
diff --git a/src/osmo-bsc/handover_decision_2.c b/src/osmo-bsc/handover_decision_2.c
index 70be050a9..fc94d6195 100644
--- a/src/osmo-bsc/handover_decision_2.c
+++ b/src/osmo-bsc/handover_decision_2.c
@@ -64,6 +64,26 @@
bsc_subscr_name(lchan->conn? lchan->conn->bsub : NULL), \
## args)
+#define LOGPHOLCHANTOREMOTE(lchan, remote_cil, level, fmt, args...) \
+ LOGP(DHODEC, level, "(lchan %u.%u%u%u %s %s)->(remote-BSS %s) (subscr %s) " fmt, \
+ lchan->ts->trx->bts->nr, \
+ lchan->ts->trx->nr, \
+ lchan->ts->nr, \
+ lchan->nr, \
+ gsm_lchant_name(lchan->type), \
+ gsm48_chan_mode_name(lchan->tch_mode), \
+ gsm0808_cell_id_list_name(remote_cil), \
+ bsc_subscr_name(lchan->conn? lchan->conn->bsub : NULL), \
+ ## args)
+
+#define LOGPHOCAND(candidate, level, fmt, args...) do {\
+ if ((candidate)->bts) \
+ LOGPHOLCHANTOBTS((candidate)->lchan, (candidate)->bts, level, fmt, ## args); \
+ else if ((candidate)->cil) \
+ LOGPHOLCHANTOREMOTE((candidate)->lchan, (candidate)->cil, level, fmt, ## args); \
+ } while(0)
+
+
#define REQUIREMENT_A_TCHF 0x01
#define REQUIREMENT_B_TCHF 0x02
#define REQUIREMENT_C_TCHF 0x04
@@ -634,7 +654,6 @@ static int trigger_handover_or_assignment(struct gsm_lchan *lchan, struct gsm_bt
/* change to full rate if AFS is improved and a candidate */
if (afs_bias > 0 && (requirements & REQUIREMENT_TCHF_MASK)) {
full_rate = true;
- LOGPHOLCHAN(lchan, LOGL_DEBUG, "[Improve AHS->AFS]\n");
break;
}
/* change to full rate if the only candidate */
@@ -749,7 +768,7 @@ static void collect_handover_candidate(struct gsm_lchan *lchan, struct neigh_mea
.bsic = nmp->bsic,
};
int avg;
- struct ho_candidate *c;
+ struct ho_candidate c;
int min_rxlev;
/* skip empty slots */
@@ -791,16 +810,22 @@ static void collect_handover_candidate(struct gsm_lchan *lchan, struct neigh_mea
/* calculate average rxlev for this cell over the window */
avg = neigh_meas_avg(nmp, ho_get_hodec2_rxlev_neigh_avg_win(bts->ho));
+ c = (struct ho_candidate){
+ .lchan = lchan,
+ .avg = avg,
+ .bts = neighbor_bts,
+ };
+
/* Heed rxlev hysteresis only if the RXLEV/RXQUAL/TA levels of the MS aren't critically bad and
* we're just looking for an improvement. If levels are critical, we desperately need a handover
* and thus skip the hysteresis check. */
if (!include_weaker_rxlev) {
unsigned int pwr_hyst = ho_get_hodec2_pwr_hysteresis(bts->ho);
if (avg <= (av_rxlev + pwr_hyst)) {
- LOGPHOLCHAN(lchan, LOGL_DEBUG,
- "BTS %d is not a candidate, because RX level (%d) is lower"
- " or equal than current RX level (%d) + hysteresis (%d)\n",
- neighbor_bts->nr, rxlev2dbm(avg), rxlev2dbm(av_rxlev), pwr_hyst);
+ LOGPHOCAND(&c, LOGL_DEBUG,
+ "Not a candidate, because RX level (%d) is lower"
+ " or equal than current RX level (%d) + hysteresis (%d)\n",
+ rxlev2dbm(avg), rxlev2dbm(av_rxlev), pwr_hyst);
return;
}
}
@@ -808,22 +833,20 @@ static void collect_handover_candidate(struct gsm_lchan *lchan, struct neigh_mea
/* if the minimum level is not reached */
min_rxlev = ho_get_hodec2_min_rxlev(neighbor_bts->ho);
if (rxlev2dbm(avg) < min_rxlev) {
- LOGPHOLCHAN(lchan, LOGL_DEBUG,
- "BTS %d is not a candidate, because RX level (%d) is lower"
- " than its minimum required RX level (%d)\n",
- neighbor_bts->nr, rxlev2dbm(avg), min_rxlev);
+ LOGPHOCAND(&c, LOGL_DEBUG,
+ "Not a candidate, because RX level (%d) is lower"
+ " than the minimum required RX level (%d)\n",
+ rxlev2dbm(avg), min_rxlev);
return;
}
tchf_count = bts_count_free_ts(neighbor_bts, GSM_PCHAN_TCH_F);
tchh_count = bts_count_free_ts(neighbor_bts, GSM_PCHAN_TCH_H);
- c = &clist[*candidates];
- c->lchan = lchan;
- c->bts = neighbor_bts;
- c->requirements = check_requirements(lchan, neighbor_bts, tchf_count,
- tchh_count);
- c->avg = avg;
- debug_candidate(lchan, c, neighbor_bts, av_rxlev, tchf_count, tchh_count);
+ c.requirements = check_requirements(lchan, neighbor_bts, tchf_count, tchh_count);
+
+ debug_candidate(lchan, &c, neighbor_bts, av_rxlev, tchf_count, tchh_count);
+
+ clist[*candidates] = c;
(*candidates)++;
}
@@ -973,9 +996,9 @@ static int find_alternative_lchan(struct gsm_lchan *lchan, bool include_weaker_r
/* perform handover, if there is a candidate */
if (best_cand) {
- LOGPHOLCHANTOBTS(lchan, best_cand->bts, LOGL_INFO, "Best candidate, RX level %d%s\n",
- rxlev2dbm(best_cand->avg),
- best_applied_afs_bias ? " (applied AHS -> AFS rxlev bias)" : "");
+ LOGPHOCAND(best_cand, LOGL_INFO, "Best candidate, RX level %d%s\n",
+ rxlev2dbm(best_cand->avg),
+ best_applied_afs_bias ? " (applied AHS -> AFS rxlev bias)" : "");
return trigger_handover_or_assignment(lchan, best_cand->bts,
best_cand->requirements & REQUIREMENT_B_MASK);
}
@@ -1002,9 +1025,9 @@ static int find_alternative_lchan(struct gsm_lchan *lchan, bool include_weaker_r
/* perform handover, if there is a candidate */
if (best_cand) {
- LOGPHOLCHANTOBTS(lchan, best_cand->bts, LOGL_INFO, "Best candidate, RX level %d%s\n",
- rxlev2dbm(best_cand->avg),
- best_applied_afs_bias? " (applied AHS -> AFS rxlev bias)" : "");
+ LOGPHOCAND(best_cand, LOGL_INFO, "Best candidate, RX level %d%s\n",
+ rxlev2dbm(best_cand->avg),
+ best_applied_afs_bias? " (applied AHS -> AFS rxlev bias)" : "");
return trigger_handover_or_assignment(lchan, best_cand->bts,
best_cand->requirements & REQUIREMENT_C_MASK);
}
@@ -1037,10 +1060,9 @@ static int find_alternative_lchan(struct gsm_lchan *lchan, bool include_weaker_r
/* perform handover, if there is a candidate */
if (best_cand) {
- LOGPHOLCHANTOBTS(lchan, best_cand->bts, LOGL_INFO, "Best candidate, RX level %d"
- " with greater congestion found%s\n",
- rxlev2dbm(best_cand->avg),
- best_applied_afs_bias ? " (applied AHS -> AFS rxlev bias)" : "");
+ LOGPHOCAND(best_cand, LOGL_INFO, "Best candidate: RX level %d%s\n",
+ rxlev2dbm(best_cand->avg),
+ best_applied_afs_bias ? " (applied AHS -> AFS rxlev bias)" : "");
return trigger_handover_or_assignment(lchan, best_cand->bts,
best_cand->requirements & REQUIREMENT_A_MASK);
}
@@ -1337,9 +1359,8 @@ static int bts_resolve_congestion(struct gsm_bts *bts, int tchf_congestion, int
if (log_check_level(DHODEC, LOGL_DEBUG)) {
LOGPHOBTS(bts, LOGL_DEBUG, "Considering %u candidates to solve congestion:\n", candidates);
for (i = 0; i < candidates; i++) {
- LOGPHOLCHANTOBTS(clist[i].lchan, clist[i].bts, LOGL_DEBUG,
- "#%d: req=0x%x avg-rxlev=%d\n",
- i, clist[i].requirements, clist[i].avg);
+ LOGPHOCAND(&clist[i], LOGL_DEBUG, "#%d: req=0x%x avg-rxlev=%d\n",
+ i, clist[i].requirements, clist[i].avg);
}
}
@@ -1381,7 +1402,8 @@ next_b1:
is_improved = 1;
} else
is_improved = 0;
- LOGP(DHODEC, LOGL_DEBUG, "candidate %d: avg=%d best_avg_db=%d\n", i, avg, best_avg_db);
+ LOGPHOCAND(&clist[i], LOGL_DEBUG, "candidate %d: avg=%d best_avg_db=%d\n",
+ i, avg, best_avg_db);
if (avg > best_avg_db) {
best_cand = &clist[i];
best_avg_db = avg;
@@ -1391,10 +1413,9 @@ next_b1:
/* perform handover, if there is a candidate */
if (best_cand) {
any_ho = 1;
- LOGPHOLCHAN(best_cand->lchan, LOGL_DEBUG,
- "Best candidate BTS %u (RX level %d%s) without congestion found\n",
- best_cand->bts->nr, rxlev2dbm(best_cand->avg),
- is_improved ? ", RX quality improved by AHS->AFS" : "");
+ LOGPHOCAND(best_cand, LOGL_DEBUG, "Best candidate: RX level %d%s\n",
+ rxlev2dbm(best_cand->avg),
+ is_improved ? " (applied AHS->AFS bias)" : "");
trigger_handover_or_assignment(best_cand->lchan, best_cand->bts,
best_cand->requirements & REQUIREMENT_B_MASK);
#if 0
@@ -1461,10 +1482,9 @@ next_b2:
/* perform handover, if there is a candidate */
if (worst_cand) {
any_ho = 1;
- LOGP(DHODEC, LOGL_INFO, "Worst candidate for assignment "
- "(RX level %d%s) from TCH/H -> TCH/F without congestion "
- "found\n", rxlev2dbm(worst_cand->avg),
- is_improved ? ", RX quality improved by AHS->AFS" : "");
+ LOGPHOCAND(worst_cand, LOGL_INFO, "Worst candidate: RX level %d from TCH/H -> TCH/F%s\n",
+ rxlev2dbm(worst_cand->avg),
+ is_improved ? " (applied AHS -> AFS rxlev bias)" : "");
trigger_handover_or_assignment(worst_cand->lchan,
worst_cand->bts,
worst_cand->requirements & REQUIREMENT_B_MASK);
@@ -1533,12 +1553,9 @@ next_c1:
/* perform handover, if there is a candidate */
if (best_cand) {
any_ho = 1;
- LOGP(DHODEC, LOGL_INFO, "Best candidate BTS %d (RX level %d) "
- "with less or equal congestion found\n",
- best_cand->bts->nr, rxlev2dbm(best_cand->avg));
- if (is_improved)
- LOGP(DHODEC, LOGL_INFO, "(is improved due to "
- "AHS -> AFS)\n");
+ LOGPHOCAND(best_cand, LOGL_INFO, "Best candidate: RX level %d%s\n",
+ rxlev2dbm(best_cand->avg),
+ is_improved ? " (applied AHS -> AFS rxlev bias)" : "");
trigger_handover_or_assignment(best_cand->lchan, best_cand->bts,
best_cand->requirements & REQUIREMENT_C_MASK);
#if 0
@@ -1610,10 +1627,9 @@ next_c2:
/* perform handover, if there is a candidate */
if (worst_cand) {
any_ho = 1;
- LOGP(DHODEC, LOGL_INFO, "Worst candidate for assignment "
- "(RX level %d%s) from TCH/H -> TCH/F with less or equal "
- "congestion found\n", rxlev2dbm(worst_cand->avg),
- is_improved ? ", RX quality improved by AHS->AFS" : "");
+ LOGPHOCAND(worst_cand, LOGL_INFO, "Worst candidate: RX level %d from TCH/H -> TCH/F%s\n",
+ rxlev2dbm(worst_cand->avg),
+ is_improved ? " (applied AHS -> AFS rxlev bias)" : "");
trigger_handover_or_assignment(worst_cand->lchan,
worst_cand->bts,
worst_cand->requirements & REQUIREMENT_C_MASK);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 02:21:53 +0000