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Merge remote-tracking branch 'origin/hack-bch-no-sched-sf-0' into develop

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Raphael Defosseux
2021-08-02 10:00:14 +02:00
parent 599287b632 f6e0321860
commit a9ffbc6b07
1 changed files with 17 additions and 0 deletions
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openair2/LAYER2/MAC/eNB_scheduler.c
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@@ -586,6 +586,23 @@ eNB_dlsch_ulsch_scheduler(module_id_t module_idP,
memset(cc[CC_id].vrb_map_UL, 0, 100); memset(cc[CC_id].vrb_map_UL, 0, 100);
cc[CC_id].mcch_active = 0; cc[CC_id].mcch_active = 0;
clear_nfapi_information(RC.mac[module_idP], CC_id, frameP, subframeP); clear_nfapi_information(RC.mac[module_idP], CC_id, frameP, subframeP);
/* hack: skip BCH RBs in subframe 0 for DL scheduling,
* because with high MCS we may exceed code rate 0.93
* when using those RBs (36.213 7.1.7 says the UE may
* skip decoding if the code rate is higher than 0.93)
* TODO: remove this hack, deal with physical bits properly
* i.e. reduce MCS in the scheduler if code rate > 0.93
*/
if (subframeP == 0) {
int i;
int bw = cc[CC_id].mib->message.dl_Bandwidth;
/* start and count defined for RBs: 6, 15, 25, 50, 75, 100 */
int start[6] = { 0, 4, 9, 22, 34, 47 };
int count[6] = { 6, 7, 7, 6, 7, 6 };
for (i = 0; i < count[bw]; i++)
cc[CC_id].vrb_map[start[bw] + i] = 1;
}
} }
/* Refresh UE list based on UEs dropped by PHY in previous subframe */ /* Refresh UE list based on UEs dropped by PHY in previous subframe */