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gNB: add NTN specific parameter cellSpecificKoffset_r17 and use it for UL scheduling

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According to the RRC specification, cellSpecificKoffset is:
Scheduling offset used for the timing relationships that are modified for NTN (see TS 38.213 [13]).
The unit of the field K_offset is number of slots for a given subcarrier spacing of 15 kHz.
If the field is absent UE assumes value 0

This parameter `cellSpecificKoffset_r17` can be set in the gNB conf file, in the section `servingCellConfigCommon`
This commit is contained in:
Thomas Schlichter
2024-06-03 11:54:55 +02:00
parent 168b172f9a
commit ccba7c875d
12 changed files with 90 additions and 56 deletions
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openair2/GNB_APP/RRC_nr_paramsvalues.h
+2
View File
@@ -109,6 +109,7 @@
#define GNB_CONFIG_STRING_NROFUPLINKSYMBOLS2 "nrofUplinkSymbols2"
#define GNB_CONFIG_STRING_SSPBCHBLOCKPOWER "ssPBCH_BlockPower"
#define GNB_CONFIG_STRING_CELLSPECIFICKOFFSET "cellSpecificKoffset_r17"
#define CARRIERBANDWIDTH_OKVALUES {11,18,24,25,31,32,38,51,52,65,66,78,79,93,106,107,121,132,133,135,160,162,189,216,217,245,264,270,273}
@@ -232,6 +233,7 @@
{GNB_CONFIG_STRING_NROFUPLINKSLOTS2,NULL,0,.i64ptr=&scc->tdd_UL_DL_ConfigurationCommon->pattern2->nrofUplinkSlots,.defint64val=-1,TYPE_INT64,0},\
{GNB_CONFIG_STRING_NROFUPLINKSYMBOLS2,NULL,0,.i64ptr=&scc->tdd_UL_DL_ConfigurationCommon->pattern2->nrofUplinkSymbols,.defint64val=-1,TYPE_INT64,0},\
{GNB_CONFIG_STRING_SSPBCHBLOCKPOWER,NULL,0,.i64ptr=&scc->ss_PBCH_BlockPower,.defint64val=20,TYPE_INT64,0}, \
{GNB_CONFIG_STRING_CELLSPECIFICKOFFSET,NULL,0,.i64ptr=scc->ext2->ntn_Config_r17->cellSpecificKoffset_r17,.defint64val=0,TYPE_INT64,0}, \
{GNB_CONFIG_STRING_MSG1SUBCARRIERSPACING,NULL,0,.i64ptr=scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->msg1_SubcarrierSpacing,.defintval=-1,TYPE_INT64,0}}
/*-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
openair2/GNB_APP/gnb_config.c
+11 -1
View File
@@ -279,7 +279,10 @@ void prepare_scc(NR_ServingCellConfigCommon_t *scc) {
//ratematchpattern->patternType.choice.bitmaps->periodicityAndPattern->choice.n40.buf = MALLOC(5);
//ratematchpattern->subcarrierSpacing = CALLOC(1,sizeof(NR_SubcarrierSpacing_t));
//ratematchpatternid = CALLOC(1,sizeof(NR_RateMatchPatternId_t));
scc->ext2 = CALLOC(1, sizeof(*scc->ext2));
scc->ext2->ntn_Config_r17 = CALLOC(1, sizeof(*scc->ext2->ntn_Config_r17));
scc->ext2->ntn_Config_r17->cellSpecificKoffset_r17 = CALLOC(1, sizeof(*scc->ext2->ntn_Config_r17->cellSpecificKoffset_r17));
}
void fill_scc_sim(NR_ServingCellConfigCommon_t *scc,uint64_t *ssb_bitmap,int N_RB_DL,int N_RB_UL,int mu_dl,int mu_ul) {
@@ -471,6 +474,13 @@ void fix_scc(NR_ServingCellConfigCommon_t *scc,uint64_t ssbmap) {
// check pucch_ResourceConfig
AssertFatal(*scc->uplinkConfigCommon->initialUplinkBWP->pucch_ConfigCommon->choice.setup->pucch_ResourceCommon < 2,
"pucch_ResourceConfig should be 0 or 1 for now\n");
if(*scc->ext2->ntn_Config_r17->cellSpecificKoffset_r17 == 0) {
free(scc->ext2->ntn_Config_r17->cellSpecificKoffset_r17);
free(scc->ext2->ntn_Config_r17);
free(scc->ext2);
scc->ext2 = NULL;
}
}
/* Function to allocate dedicated serving cell config strutures */