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nr,gnb,sched: fix SIB1 periodicity derivation in NR sched

This commit is contained in:
Francisco 2021-11-05 09:40:28 +00:00 committed by Francisco Paisana
parent 72c2129cd3
commit 9a267d7ed0
1 changed files with 4 additions and 5 deletions
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9
srsgnb/src/stack/mac/sched_nr_signalling.cc
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@ -19,6 +19,7 @@
#define POS_IN_BURST_FOURTH_BIT_IDX 3
#define DEFAULT_SSB_PERIODICITY 5
#define MAX_SIB_TX 4
namespace srsenb {
namespace sched_nr_impl {
@ -152,7 +153,7 @@ void si_sched::run_slot(bwp_slot_allocator& bwp_alloc)
bool start_window;
if (si.n == 0) {
// SIB1
start_window = sl_pdcch.to_uint() % si.period == 0;
start_window = sl_pdcch.slot_idx() == 0 and sl_pdcch.sfn() % 2 == 0;
} else {
// SI messages
start_window = (sl_pdcch.sfn() % si.period == x / N) and sl_pdcch.slot_idx() == x % bwp_cfg->slots.size();
@ -160,6 +161,7 @@ void si_sched::run_slot(bwp_slot_allocator& bwp_alloc)
if (start_window) {
// If start of SI message window
si.win_start = sl_pdcch;
si.n_tx = 0;
}
} else if (si.win_start + si.win_len >= sl_pdcch) {
// If end of SI message window
@ -178,13 +180,10 @@ void si_sched::run_slot(bwp_slot_allocator& bwp_alloc)
return;
}
for (si_msg_ctxt_t& si : pending_sis) {
if (not si.win_start.valid()) {
if (not si.win_start.valid() or si.n_tx >= MAX_SIB_TX) {
continue;
}
// TODO: NOTE 2: The UE is not required to monitor PDCCH monitoring occasion(s) corresponding to each transmitted
// SSB in SI-window.
// Attempt grants with increasing number of PRBs (if the number of PRBs is too low, the coderate is invalid)
si.result = alloc_result::invalid_coderate;
uint32_t prb_start_idx = 0;