BSC_Tests: add TC_chan_alloc_algo_ass_dynamic
This test case verifies the new channel allocation mode, which
is expected to switch between ascending and descending modes
dynamically based on the following two configurable parameters:
* Uplink RxLev threshold (and min number of samples),
* C0 (BCCH carrier) channel load threshold.
The test case scenario includes:
Case a) Unknown Uplink RxLev => fall-back to ascending.
Case b) Not enough RxLev samples => use ascending.
Case c) Uplink RxLev below the threshold => use ascending.
Case d) Uplink RxLev above the threshold => use descending.
Case e) Uplink RxLev above the threshold, but C0 load is not.
Change-Id: Ia522f37c1c001b3a36f5145b8875fbb88311c2e5
Related: SYS#5460
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 7070c9f..f3e15ef 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -11638,6 +11638,83 @@
f_shutdown_helper();
}
+testcase TC_chan_alloc_algo_ass_dynamic() runs on test_CT {
+ const BtsTrxIdx TRX0 := {2, 0};
+ const BtsTrxIdx TRX3 := {2, 3};
+
+ /* We need to access BTS2, which has 4 TRXs */
+ f_init(nr_bts := 3);
+
+ /* HACK: work around "Couldn't find Expect for CRCX" */
+ vc_MGCP.stop;
+
+ f_vty_enter_cfg_bts(BSCVTY, 2);
+ f_vty_transceive(BSCVTY, "channel allocator mode assignment dynamic");
+ f_vty_transceive(BSCVTY, "channel allocator dynamic-param ul-rxlev thresh 50 avg-num 2");
+ f_vty_transceive(BSCVTY, "channel allocator dynamic-param c0-chan-load thresh 0");
+ f_vty_transceive(BSCVTY, "end");
+
+ var DchanTuple dt;
+
+ f_logp(BSCVTY, "Case a) Unknown Uplink RxLev, fall-back to ascending");
+ dt := f_est_dchan('23'O, 23, '00000000'O, TRX0);
+ f_TC_chan_alloc_algo(dt, TRX0);
+ f_perform_clear_test_ct(dt);
+
+ f_logp(BSCVTY, "Case b) Not enough RxLev samples, use ascending");
+ dt := f_est_dchan('23'O, 23, '00000000'O, TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 0,
+ ts_RSL_IE_UplinkMeas(30, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_TC_chan_alloc_algo(dt, TRX0);
+ f_perform_clear_test_ct(dt);
+
+ f_logp(BSCVTY, "Case c) Uplink RxLev below the threshold, use ascending");
+ dt := f_est_dchan('23'O, 23, '00000000'O, TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 0,
+ ts_RSL_IE_UplinkMeas(45, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 1,
+ ts_RSL_IE_UplinkMeas(48, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_TC_chan_alloc_algo(dt, TRX0);
+ f_perform_clear_test_ct(dt);
+
+ f_logp(BSCVTY, "Case d) Uplink RxLev above the threshold, use descending");
+ dt := f_est_dchan('23'O, 23, '00000000'O, TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 0,
+ ts_RSL_IE_UplinkMeas(50, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 1,
+ ts_RSL_IE_UplinkMeas(58, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_TC_chan_alloc_algo(dt, TRX3);
+ f_perform_clear_test_ct(dt);
+
+ f_vty_enter_cfg_bts(BSCVTY, 2);
+ f_vty_transceive(BSCVTY, "channel allocator dynamic-param c0-chan-load thresh 90");
+ f_vty_transceive(BSCVTY, "end");
+
+ f_logp(BSCVTY, "Case e) Uplink RxLev above the threshold, but C0 load is not");
+ dt := f_est_dchan('23'O, 23, '00000000'O, TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 0,
+ ts_RSL_IE_UplinkMeas(50, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_ipa_tx(ts_RSL_MEAS_RES_EMPTY(dt.rsl_chan_nr, 1,
+ ts_RSL_IE_UplinkMeas(58, 0),
+ ts_RSL_IE_BS_Power(0)), TRX0);
+ f_TC_chan_alloc_algo(dt, TRX0);
+ f_perform_clear_test_ct(dt);
+
+ f_vty_enter_cfg_bts(BSCVTY, 2);
+ f_vty_transceive(BSCVTY, "channel allocator ascending");
+ f_vty_transceive(BSCVTY, "end");
+
+ /* At this point some TCH/F channels are BORKEN, but they will be
+ * resurrected upon the A-bis/OML link re-establishment. */
+ f_shutdown_helper();
+}
+
control {
/* CTRL interface testing */
execute( TC_ctrl_msc_connection_status() );
@@ -11967,6 +12044,7 @@
/* Channel allocator */
execute( TC_chan_alloc_algo_ascending() );
execute( TC_chan_alloc_algo_descending() );
+ execute( TC_chan_alloc_algo_ass_dynamic() );
/* Run TC_ho_out_of_this_bsc last, because it may trigger a segfault before osmo-bsc's patch
* with change-id I5a3345ab0005a73597f5c27207480912a2f5aae6 */
diff --git a/library/RSL_Types.ttcn b/library/RSL_Types.ttcn
index 8a4d1fa..84e9375 100644
--- a/library/RSL_Types.ttcn
+++ b/library/RSL_Types.ttcn
@@ -1542,12 +1542,27 @@
}
}
- /* Receive template for a measurement report that lacks the measurement report
+ /* Templates for a measurement report that lacks the measurement report
* from the MS (l1_info, l3_info and ms timing offset */
- template RSL_Message tr_RSL_MEAS_RES_EMPTY(template RslChannelNr chan_nr,
- template uint8_t meas_res_nr := ?,
- template RSL_IE_UplinkMeas ul_meas := ?,
- template RSL_IE_BS_Power bs_power := ?) := {
+ template (value) RSL_Message
+ ts_RSL_MEAS_RES_EMPTY(template (value) RslChannelNr chan_nr,
+ template (value) uint8_t meas_res_nr,
+ template (value) RSL_IE_UplinkMeas ul_meas,
+ template (value) RSL_IE_BS_Power bs_power) := {
+ msg_disc := ts_RSL_MsgDisc(RSL_MDISC_DCHAN, false),
+ msg_type := RSL_MT_MEAS_RES,
+ ies := {
+ t_RSL_IE(RSL_IE_CHAN_NR, RSL_IE_Body:{chan_nr := chan_nr}),
+ t_RSL_IE(RSL_IE_MEAS_RES_NR, RSL_IE_Body:{meas_res_nr := meas_res_nr}),
+ t_RSL_IE(RSL_IE_UPLINK_MEAS, RSL_IE_Body:{uplink_meas := ul_meas}),
+ t_RSL_IE(RSL_IE_BS_POWER, RSL_IE_Body:{bs_power := bs_power})
+ }
+ }
+ template RSL_Message
+ tr_RSL_MEAS_RES_EMPTY(template (present) RslChannelNr chan_nr,
+ template uint8_t meas_res_nr := ?,
+ template RSL_IE_UplinkMeas ul_meas := ?,
+ template RSL_IE_BS_Power bs_power := ?) := {
msg_disc := tr_RSL_MsgDisc(RSL_MDISC_DCHAN, false),
msg_type := RSL_MT_MEAS_RES,
ies := {