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checking the number of prbs available for DL requires an additional check for the prb=6 (#322)

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master
Francisco Paisana 6 years ago committed by Andre Puschmann
parent 15abb2b020
commit 43a8a8e195
1 changed files with 9 additions and 4 deletions
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13
srsenb/src/mac/scheduler_ue.cc
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@ -36,6 +36,8 @@
#define Info(fmt, ...) log_h->info(fmt, ##__VA_ARGS__) #define Info(fmt, ...) log_h->info(fmt, ##__VA_ARGS__)
#define Debug(fmt, ...) log_h->debug(fmt, ##__VA_ARGS__) #define Debug(fmt, ...) log_h->debug(fmt, ##__VA_ARGS__)
#define MCS_FIRST_DL 4
/****************************************************** /******************************************************
* UE class * * UE class *
******************************************************/ ******************************************************/
@ -498,9 +500,9 @@ int sched_ue::generate_format1(dl_harq_proc *h,
srslte_ra_dl_dci_to_grant_prb_allocation(dci, &grant, cell.nof_prb); srslte_ra_dl_dci_to_grant_prb_allocation(dci, &grant, cell.nof_prb);
uint32_t nof_ctrl_symbols = cfi+(cell.nof_prb<10?1:0); uint32_t nof_ctrl_symbols = cfi+(cell.nof_prb<10?1:0);
uint32_t nof_re = srslte_ra_dl_grant_nof_re(&grant, cell, sf_idx, nof_ctrl_symbols); uint32_t nof_re = srslte_ra_dl_grant_nof_re(&grant, cell, sf_idx, nof_ctrl_symbols);
if(need_conres_ce and cell.nof_prb<10) { // SRB0 Tx. Use a higher MCS for the PRACH to fit in 6 PRBs if (need_conres_ce and cell.nof_prb < 10) { // SRB0 Tx. Use a higher MCS for the PRACH to fit in 6 PRBs
tbs = srslte_ra_tbs_from_idx(srslte_ra_dl_tbs_idx_from_mcs(4), nof_prb) / 8; tbs = srslte_ra_tbs_from_idx(srslte_ra_dl_tbs_idx_from_mcs(MCS_FIRST_DL), nof_prb) / 8;
mcs = 4; mcs = MCS_FIRST_DL;
} else if (fixed_mcs_dl < 0) { } else if (fixed_mcs_dl < 0) {
tbs = alloc_tbs_dl(nof_prb, nof_re, req_bytes, &mcs); tbs = alloc_tbs_dl(nof_prb, nof_re, req_bytes, &mcs);
} else { } else {
@ -932,7 +934,10 @@ uint32_t sched_ue::get_required_prb_dl(uint32_t req_bytes, uint32_t nof_ctrl_sym
uint32_t n; uint32_t n;
for (n=0; n < cell.nof_prb && nbytes < req_bytes; ++n) { for (n=0; n < cell.nof_prb && nbytes < req_bytes; ++n) {
nof_re = srslte_ra_dl_approx_nof_re(cell, n+1, nof_ctrl_symbols); nof_re = srslte_ra_dl_approx_nof_re(cell, n+1, nof_ctrl_symbols);
if(fixed_mcs_dl < 0) { if (is_first_dl_tx() && cell.nof_prb < 10) {
tbs = srslte_ra_tbs_from_idx(srslte_ra_dl_tbs_idx_from_mcs(MCS_FIRST_DL), n + 1) / 8;
Info("get_required_prb: req_bytes=%d, tbs=%d, nof_prb=%d\n", req_bytes, tbs, n);
} else if (fixed_mcs_dl < 0) {
tbs = alloc_tbs_dl(n+1, nof_re, 0, &mcs); tbs = alloc_tbs_dl(n+1, nof_re, 0, &mcs);
} else { } else {
tbs = srslte_ra_tbs_from_idx(srslte_ra_dl_tbs_idx_from_mcs(fixed_mcs_dl), n + 1) / 8; tbs = srslte_ra_tbs_from_idx(srslte_ra_dl_tbs_idx_from_mcs(fixed_mcs_dl), n + 1) / 8;

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