diff options
Diffstat (limited to 'tests/power/ms_power_loop_test.c')
| -rw-r--r-- | tests/power/ms_power_loop_test.c | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/tests/power/ms_power_loop_test.c b/tests/power/ms_power_loop_test.c index f0c02507..b9d68670 100644 --- a/tests/power/ms_power_loop_test.c +++ b/tests/power/ms_power_loop_test.c @@ -185,32 +185,30 @@ static void test_pf_algo_ewma(void) lchan->ms_power_ctrl.max = ms_pwr_ctl_lvl(GSM_BAND_1800, 26); OSMO_ASSERT(lchan->ms_power_ctrl.max == 2); -#define CHECK_UL_RSSI_AVG100(exp) \ - printf("\tAvg[t] is %2.2f dBm (expected %2.2f dBm)\n", \ +#define CHECK_RXLEV_AVG100(exp) \ + printf("\tAvg[t] is RxLev %2.2f (expected %2.2f)\n", \ ((float) *avg100) / 100, exp); /* UL RSSI remains constant => no UL power change */ apply_power_test(lchan, -75, good_lqual, 0, 15); - CHECK_UL_RSSI_AVG100(-75.00); + CHECK_RXLEV_AVG100((float)dbm2rxlev(-75)); /* RXLEV 35 */ - /* Avg[t] = (0.2 * -90) + (0.8 * -75) = -78.0 dBm */ - apply_power_test(lchan, -90, good_lqual, 1, 13); - CHECK_UL_RSSI_AVG100(-78.00); + /* Avg[t] = (0.2 * 20) + (0.8 * 35) = RXLEV 32, (-78 dBm) */ + apply_power_test(lchan, -90, good_lqual, 1, 13); /* -90 dBm = RXLEV 20 */ + CHECK_RXLEV_AVG100(32.00); - /* Avg[t] = (0.2 * -90) + (0.8 * -78) = -80.4 dBm */ - apply_power_test(lchan, -90, good_lqual, 1, 11); - CHECK_UL_RSSI_AVG100(-80.40); + /* Avg[t] = (0.2 * 20) + (0.8 * 32) = RXLEV 29.6 (-80.4 dBm) */ + apply_power_test(lchan, -90, good_lqual, 1, 11); /* -90 dBm = RXLEV 20 */ + CHECK_RXLEV_AVG100(29.60); - /* Avg[t] = (0.2 * -70) + (0.8 * -80.4) = -78.32 dBm, + /* Avg[t] = (0.2 * 40) + (0.8 * 29.60) = RXLEV 31.68 (-78.32 dBm), * but due to up-/down-scaling artefacts we get the following: * Avg100[t] = Avg100[t - 1] + A * (Pwr - Avg[t] / 100) - * Avg100[t] = -8040 + 20 * (-70 - (-8040 / 100)) - * Avg100[t] = -8040 + 20 * (-70 - (-8040 / 100)) - * Avg100[t] = -8040 + 20 * (-70 + 80) - * Avg100[t] = -8040 + 200 = -7840 - * Avg[t] = -7840 / 100 = -78.4 */ - apply_power_test(lchan, -70, good_lqual, 1, 9); - CHECK_UL_RSSI_AVG100(-78.40); + * Avg100[t] = 2960 + 20 * (40 - (2960 / 100)) + * Avg100[t] = 2960 + 20 * (40 - 29) + * Avg[t] = 3180 / 100 = 31.80 */ + apply_power_test(lchan, -70, good_lqual, 1, 9); /* RXLEV 40 */ + CHECK_RXLEV_AVG100(31.80); mp->ewma.alpha = 70; /* 30% smoothing */ lchan->ms_power_ctrl.current = 15; @@ -218,17 +216,17 @@ static void test_pf_algo_ewma(void) (struct gsm_power_ctrl_meas_proc_state) { 0 }; /* This is the first sample, the filter outputs it as-is */ - apply_power_test(lchan, -50, good_lqual, 0, 15); - CHECK_UL_RSSI_AVG100(-50.00); + apply_power_test(lchan, -50, good_lqual, 0, 15); /* RXLEV 60 */ + CHECK_RXLEV_AVG100((float)dbm2rxlev(-50)); - /* Avg[t] = (0.7 * -50) + (0.3 * -50) = -50.0 dBm */ + /* Avg[t] = (0.7 * 60) + (0.3 * 60) = RXLEV 60 (-50.0 dBm) */ apply_power_test(lchan, -50, good_lqual, 0, 15); - CHECK_UL_RSSI_AVG100(-50.0); + CHECK_RXLEV_AVG100((float)dbm2rxlev(-50)); /* Simulate SACCH block loss (-110 dBm): - * Avg[t] = (0.7 * -110) + (0.3 * -50) = -92.0 dBm */ - apply_power_test(lchan, -110, good_lqual, 1, 13); - CHECK_UL_RSSI_AVG100(-92.0); + * Avg[t] = (0.7 * 0) + (0.3 * 60) = RXLEV 18.0 (-92.0 dBm) */ + apply_power_test(lchan, -110, good_lqual, 1, 13); /* RXLEV 0 */ + CHECK_RXLEV_AVG100(18.0); } static void test_power_hysteresis(void) |