mirror of https://github.com/PentHertz/srsLTE.git
sched,nr: force R<0.9 by reducing mcs
This commit is contained in:
parent
d6a3daff8a
commit
7d4a5238f6
|
@ -58,7 +58,7 @@ public:
|
|||
bool new_retx(slot_point slot_tx, slot_point slot_ack);
|
||||
|
||||
// NOTE: Has to be used before first tx is dispatched
|
||||
bool set_tbs(uint32_t tbs);
|
||||
bool set_tbs(uint32_t tbs, int mcs = -1);
|
||||
|
||||
const uint32_t pid;
|
||||
|
||||
|
|
|
@ -243,36 +243,51 @@ alloc_result bwp_slot_allocator::alloc_pdsch(slot_ue& ue, const prb_grant& dl_gr
|
|||
|
||||
// Allocation Successful
|
||||
|
||||
// Generate PDCCH
|
||||
pdcch_dl_t& pdcch = bwp_pdcch_slot.dl_pdcchs.back();
|
||||
fill_dl_dci_ue_fields(ue, *bwp_grid.cfg, ss_id, pdcch.dci.ctx.location, pdcch.dci);
|
||||
pdcch.dci.pucch_resource = 0;
|
||||
pdcch.dci.dai = std::count_if(bwp_uci_slot.pending_acks.begin(),
|
||||
bwp_uci_slot.pending_acks.end(),
|
||||
[&ue](const harq_ack_t& p) { return p.res.rnti == ue.rnti; });
|
||||
pdcch.dci.dai %= 4;
|
||||
pdcch.dci_cfg = ue.cfg->phy().get_dci_cfg();
|
||||
int mcs = ue.cfg->ue_cfg()->fixed_dl_mcs;
|
||||
do {
|
||||
// Generate PDCCH
|
||||
pdcch_dl_t& pdcch = bwp_pdcch_slot.dl_pdcchs.back();
|
||||
fill_dl_dci_ue_fields(ue, *bwp_grid.cfg, ss_id, pdcch.dci.ctx.location, pdcch.dci);
|
||||
pdcch.dci.pucch_resource = 0;
|
||||
pdcch.dci.dai = std::count_if(bwp_uci_slot.pending_acks.begin(),
|
||||
bwp_uci_slot.pending_acks.end(),
|
||||
[&ue](const harq_ack_t& p) { return p.res.rnti == ue.rnti; });
|
||||
pdcch.dci.dai %= 4;
|
||||
pdcch.dci_cfg = ue.cfg->phy().get_dci_cfg();
|
||||
|
||||
// Generate PUCCH
|
||||
bwp_uci_slot.pending_acks.emplace_back();
|
||||
bwp_uci_slot.pending_acks.back().phy_cfg = &ue.cfg->phy();
|
||||
srsran_assert(ue.cfg->phy().get_pdsch_ack_resource(pdcch.dci, bwp_uci_slot.pending_acks.back().res),
|
||||
"Error getting ack resource");
|
||||
// Generate PUCCH
|
||||
bwp_uci_slot.pending_acks.emplace_back();
|
||||
bwp_uci_slot.pending_acks.back().phy_cfg = &ue.cfg->phy();
|
||||
srsran_assert(ue.cfg->phy().get_pdsch_ack_resource(pdcch.dci, bwp_uci_slot.pending_acks.back().res),
|
||||
"Error getting ack resource");
|
||||
|
||||
// Generate PDSCH
|
||||
bwp_pdsch_slot.dl_prbs |= dl_grant;
|
||||
bwp_pdsch_slot.pdschs.emplace_back();
|
||||
pdsch_t& pdsch = bwp_pdsch_slot.pdschs.back();
|
||||
srsran_slot_cfg_t slot_cfg;
|
||||
slot_cfg.idx = ue.pdsch_slot.to_uint();
|
||||
bool ret = ue.cfg->phy().get_pdsch_cfg(slot_cfg, pdcch.dci, pdsch.sch);
|
||||
srsran_assert(ret, "Error converting DCI to grant");
|
||||
pdsch.sch.grant.tb[0].softbuffer.tx = ue.h_dl->get_softbuffer().get();
|
||||
pdsch.data[0] = ue.h_dl->get_tx_pdu()->get();
|
||||
if (ue.h_dl->nof_retx() == 0) {
|
||||
ue.h_dl->set_tbs(pdsch.sch.grant.tb[0].tbs); // update HARQ with correct TBS
|
||||
} else {
|
||||
srsran_assert(pdsch.sch.grant.tb[0].tbs == (int)ue.h_dl->tbs(), "The TBS did not remain constant in retx");
|
||||
// Generate PDSCH
|
||||
bwp_pdsch_slot.dl_prbs |= dl_grant;
|
||||
bwp_pdsch_slot.pdschs.emplace_back();
|
||||
pdsch_t& pdsch = bwp_pdsch_slot.pdschs.back();
|
||||
srsran_slot_cfg_t slot_cfg;
|
||||
slot_cfg.idx = ue.pdsch_slot.to_uint();
|
||||
bool ret = ue.cfg->phy().get_pdsch_cfg(slot_cfg, pdcch.dci, pdsch.sch);
|
||||
srsran_assert(ret, "Error converting DCI to grant");
|
||||
|
||||
pdsch.sch.grant.tb[0].softbuffer.tx = ue.h_dl->get_softbuffer().get();
|
||||
pdsch.data[0] = ue.h_dl->get_tx_pdu()->get();
|
||||
if (ue.h_dl->nof_retx() == 0) {
|
||||
ue.h_dl->set_tbs(pdsch.sch.grant.tb[0].tbs); // update HARQ with correct TBS
|
||||
} else {
|
||||
srsran_assert(pdsch.sch.grant.tb[0].tbs == (int)ue.h_dl->tbs(), "The TBS did not remain constant in retx");
|
||||
}
|
||||
if (bwp_pdsch_slot.pdschs.back().sch.grant.tb[0].R < 0.9 or mcs == 0) {
|
||||
break;
|
||||
}
|
||||
// Decrease MCS if rate is too high
|
||||
mcs--;
|
||||
ue.h_dl->set_tbs(100, mcs);
|
||||
bwp_pdsch_slot.pdschs.pop_back();
|
||||
bwp_uci_slot.pending_acks.pop_back();
|
||||
} while (true);
|
||||
if (mcs == 0) {
|
||||
logger.warning("Couldn't find mcs that leads to R<0.9");
|
||||
}
|
||||
|
||||
return alloc_result::success;
|
||||
|
|
|
@ -66,12 +66,15 @@ bool harq_proc::new_tx(slot_point slot_tx_,
|
|||
return true;
|
||||
}
|
||||
|
||||
bool harq_proc::set_tbs(uint32_t tbs)
|
||||
bool harq_proc::set_tbs(uint32_t tbs, int mcs)
|
||||
{
|
||||
if (empty() or nof_retx() > 0) {
|
||||
return false;
|
||||
}
|
||||
tb[0].tbs = tbs;
|
||||
if (mcs >= 0) {
|
||||
tb[0].mcs = mcs;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in New Issue