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Check that resources are free for Msg2/RAR

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This commit is contained in:
kn.raju
2021-02-12 08:31:35 +01:00
committed by Robert Schmidt
parent 13e719d74a
commit 37d112f511
1 changed files with 17 additions and 5 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+17 -5
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@@ -825,6 +825,19 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
if ((ra->Msg2_frame == frameP) && (ra->Msg2_slot == slotP)) {
uint16_t *vrb_map = cc[CC_id].vrb_map;
int rbStart = 0, rbSize = 6;
for (int i = 0; (i < rbSize) && (rbStart <= (dci10_bw - rbSize)); i++) {
if (vrb_map[rbStart + i]) {
rbStart += i;
i = 0;
}
}
if (rbStart > (dci10_bw - rbSize)) {
LOG_E(MAC, "%s(): cannot find free vrb_map for RA RNTI %04x!\n", __func__, ra->RA_rnti);
return;
}
nfapi_nr_dl_tti_request_body_t *dl_req = &nr_mac->DL_req[CC_id].dl_tti_request_body;
// Checking if the DCI allocation is feasible in current subframe: we might
// need to need up to two (PDCCH + PDSCH) messages, so check that we can
@@ -924,8 +937,8 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
pdsch_pdu_rel15->numDmrsCdmGrpsNoData = 2;
pdsch_pdu_rel15->dmrsPorts = 1;
pdsch_pdu_rel15->resourceAlloc = 1;
pdsch_pdu_rel15->rbStart = 0;
pdsch_pdu_rel15->rbSize = 6;
pdsch_pdu_rel15->rbStart = rbStart;
pdsch_pdu_rel15->rbSize = rbSize;
pdsch_pdu_rel15->VRBtoPRBMapping = 0; // non interleaved
for (int i=0; i<bwp->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList->list.count; i++) {
@@ -1025,9 +1038,8 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
T_BUFFER(&tx_req->TLVs[0].value.direct[0], tx_req->TLVs[0].length));
/* mark the corresponding RBs as used */
uint16_t *vrb_map = cc[CC_id].vrb_map;
for (int rb = 0; rb < pdsch_pdu_rel15->rbSize; rb++)
vrb_map[rb + pdsch_pdu_rel15->rbStart] = 1;
for (int rb = 0; rb < rbSize; rb++)
vrb_map[rb + rbStart] = 1;
}
}