diff options
Diffstat (limited to 'src/common/scheduler.c')
| -rw-r--r-- | src/common/scheduler.c | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/src/common/scheduler.c b/src/common/scheduler.c index 0e1f4957..a010b396 100644 --- a/src/common/scheduler.c +++ b/src/common/scheduler.c @@ -1444,6 +1444,31 @@ static int trx_sched_calc_frame_loss(struct l1sched_ts *l1ts, return 0; } +/* Process a single noise measurement for an inactive timeslot. */ +static void trx_sched_noise_meas(struct l1sched_chan_state *l1cs, + const struct trx_ul_burst_ind *bi) +{ + int *Avg = &l1cs->meas.interf_avg; + + /* EWMA (Exponentially Weighted Moving Average): + * + * Avg[n] = a * Val[n] + (1 - a) * Avg[n - 1] + * + * Implemented using the '+=' operator: + * + * Avg += a * Val - a * Avg + * Avg += a * (Val - Avg) + * + * We use constant 'a' = 0.5, what is equal to: + * + * Avg += (Val - Avg) / 2 + * + * We don't really need precisity here, so no scaling. + */ + + *Avg += (bi->rssi - *Avg) / 2; +} + /* Process an Uplink burst indication */ int trx_sched_ul_burst(struct l1sched_ts *l1ts, struct trx_ul_burst_ind *bi) { @@ -1469,15 +1494,13 @@ int trx_sched_ul_burst(struct l1sched_ts *l1ts, struct trx_ul_burst_ind *bi) l1cs = &l1ts->chan_state[bi->chan]; func = trx_chan_desc[bi->chan].ul_fn; - /* TODO: handle noise measurements */ - if (bi->chan == TRXC_IDLE && bi->flags & TRX_BI_F_NOPE_IND) { - LOGL1SB(DL1P, LOGL_DEBUG, l1ts, bi, "Rx noise measurement (%d)\n", bi->rssi); - return -ENOTSUP; - } - /* check if channel is active */ - if (!TRX_CHAN_IS_ACTIVE(l1cs, bi->chan)) - return -EINVAL; + if (!TRX_CHAN_IS_ACTIVE(l1cs, bi->chan)) { + /* handle noise measurements */ + if (TRX_CHAN_IS_DEDIC(bi->chan)) + trx_sched_noise_meas(l1cs, bi); + return 0; + } /* omit bursts which have no handler, like IDLE bursts */ if (!func) |