1 /*******************************************************************************
2 ################################################################################
3 # Copyright (c) [2017-2019] [Radisys] #
5 # Licensed under the Apache License, Version 2.0 (the "License"); #
6 # you may not use this file except in compliance with the License. #
7 # You may obtain a copy of the License at #
9 # http://www.apache.org/licenses/LICENSE-2.0 #
11 # Unless required by applicable law or agreed to in writing, software #
12 # distributed under the License is distributed on an "AS IS" BASIS, #
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
14 # See the License for the specific language governing permissions and #
15 # limitations under the License. #
16 ################################################################################
17 *******************************************************************************/
19 /************************************************************************
25 Desc: C source code for Entry point fucntions for slot indications
29 **********************************************************************/
31 /** @file sch_slot_ind.c
32 @brief This module processes slot indications
34 #include "common_def.h"
40 #include "du_app_mac_inf.h"
41 #include "mac_sch_interface.h"
43 #include "sch_utils.h"
48 /*******************************************************************
50 * @brief Handles sending DL broadcast alloc to MAC
54 * Function : sendDlAllocToMac
57 * Sends DL Broadcast Resource Allocation to MAC from SCH
60 * @return ROK - success
63 * ****************************************************************/
64 uint8_t sendDlAllocToMac(DlSchedInfo *dlSchedInfo, Inst inst)
68 memset(&pst, 0, sizeof(Pst));
69 FILL_PST_SCH_TO_MAC(pst, inst);
70 pst.event = EVENT_DL_SCH_INFO;
72 return(MacMessageRouter(&pst, (void *)dlSchedInfo));
75 /*******************************************************************
81 * Function : schFillBoGrantDlSchedInfo
86 * @params[in] SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId
87 * @params[in] bool isRetx, SchDlHqProcCb **hqP
88 * @return ROK - success
91 * ****************************************************************/
92 bool schFillBoGrantDlSchedInfo(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId, bool isRetx, SchDlHqProcCb **hqP)
94 uint8_t pdschNumSymbols = 0, pdschStartSymbol = 0;
95 uint16_t startPrb = 0;
97 uint32_t accumalatedSize = 0;
98 SchUeCb *ueCb = NULLP;
99 DlMsgAlloc *dciSlotAlloc, *dlMsgAlloc;
100 SlotTimingInfo pdcchTime, pdschTime, pucchTime;
102 GET_CRNTI(crnti,ueId);
103 ueCb = &cell->ueCb[ueId-1];
107 if(schDlGetAvlHqProcess(cell, ueCb, hqP) != ROK)
113 if(findValidK0K1Value(cell, currTime, ueId, ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.k0K1TblPrsnt,\
114 &pdschStartSymbol, &pdschNumSymbols, &pdcchTime, &pdschTime, &pucchTime, isRetx, *hqP) != true )
116 /* If a valid combination of slots to scheduled PDCCH, PDSCH and PUCCH is
117 * not found, do not perform resource allocation. Return from here. */
121 /* allocate PDCCH and PDSCH resources for the ue */
122 if(cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] == NULL)
125 SCH_ALLOC(dciSlotAlloc, sizeof(DlMsgAlloc));
128 DU_LOG("\nERROR --> SCH : Memory Allocation failed for ded DL msg alloc");
131 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = dciSlotAlloc;
132 memset(dciSlotAlloc, 0, sizeof(DlMsgAlloc));
133 dciSlotAlloc->crnti = crnti;
137 dciSlotAlloc = cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1];
139 /* Dl ded Msg info is copied, this was earlier filled in macSchDlRlcBoInfo */
140 fillDlMsgInfo(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].dlMsgInfo, dciSlotAlloc->crnti, isRetx, *hqP);
141 dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].isRetx = isRetx;
143 accumalatedSize = cell->api->SchScheduleDlLc(pdcchTime, pdschTime, pdschNumSymbols, isRetx, hqP);
145 /*Below case will hit if NO LC(s) are allocated due to resource crunch*/
146 if (!accumalatedSize)
149 /*[Step6]: pdcch and pdsch data is filled */
150 if((schDlRsrcAllocDlMsg(cell, pdschTime, crnti, accumalatedSize, dciSlotAlloc, startPrb, pdschStartSymbol, pdschNumSymbols, isRetx, *hqP)) != ROK)
152 DU_LOG("\nERROR --> SCH : Scheduling of DL dedicated message failed");
154 /* Free the dl ded msg info allocated in macSchDlRlcBoInfo */
155 if(dciSlotAlloc->numSchedInfo == 0)
157 SCH_FREE(dciSlotAlloc, sizeof(DlMsgAlloc));
158 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = NULL;
162 memset(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], 0, sizeof(DlMsgSchInfo));
167 /* TODO : Update the scheduling byte report for multiple LC based on QCI
169 /* As of now, the total number of bytes scheduled for a slot is divided
170 * equally amongst all LC with pending data. This is avoid starving of any
174 accumalatedSize = accumalatedSize/dlMsgAlloc->numLc;
175 for(lcIdx = 0; lcIdx < dlMsgAlloc->numLc; lcIdx ++)
176 dlMsgAlloc->lcSchInfo[lcIdx].schBytes = accumalatedSize;
179 /* Check if both DCI and DL_MSG are sent in the same slot.
180 * If not, allocate memory for DL_MSG PDSCH slot to store PDSCH info */
182 if(pdcchTime.slot == pdschTime.slot)
184 dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].pduPres = BOTH;
185 dciSlotAlloc->numSchedInfo++;
189 /* Allocate memory to schedule dlMsgAlloc to send DL_Msg, pointer will be checked at schProcessSlotInd() */
190 if(cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] == NULLP)
192 SCH_ALLOC(dlMsgAlloc, sizeof(DlMsgAlloc));
193 if(dlMsgAlloc == NULLP)
195 DU_LOG("\nERROR --> SCH : Memory Allocation failed for dlMsgAlloc");
196 if(dciSlotAlloc->numSchedInfo == 0)
198 SCH_FREE(dciSlotAlloc, sizeof(DlMsgAlloc));
199 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] = NULLP;
202 memset(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], 0, sizeof(DlMsgSchInfo));
205 cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] = dlMsgAlloc;
206 memset(dlMsgAlloc, 0, sizeof(DlMsgAlloc));
207 dlMsgAlloc->crnti = dciSlotAlloc->crnti;
210 dlMsgAlloc = cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1];
212 /* Copy all DL_MSG info */
213 memcpy(&dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo], \
214 &dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], sizeof(DlMsgSchInfo));
215 dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo].dlMsgPdcchCfg.dci.pdschCfg = \
216 &dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo].dlMsgPdschCfg;
218 /* Assign correct PDU types in corresponding slots */
219 dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo].pduPres = PDSCH_PDU;
220 dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].pduPres = PDCCH_PDU;
221 dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].pdschSlot = pdschTime.slot;
223 dciSlotAlloc->numSchedInfo++;
224 dlMsgAlloc->numSchedInfo++;
227 schAllocPucchResource(cell, pucchTime, crnti, ueCb, isRetx, *hqP);
229 cell->schDlSlotInfo[pdcchTime.slot]->pdcchUe = ueId;
230 cell->schDlSlotInfo[pdschTime.slot]->pdschUe = ueId;
231 cell->schUlSlotInfo[pucchTime.slot]->pucchUe = ueId;
233 /* after allocation is done, unset the bo bit for that ue */
234 UNSET_ONE_BIT(ueId, cell->boIndBitMap);
238 /*******************************************************************
240 * @brief Handles sending DL Page alloc to MAC
244 * Function : sendDlPAgeAllocToMac
247 * Sends DL Page Resource Allocation to MAC from SCH
250 * @return ROK - success
253 * ****************************************************************/
254 uint8_t sendDlPageAllocToMac(DlPageAlloc *dlPageAlloc, Inst inst)
258 memset(&pst, 0, sizeof(Pst));
259 FILL_PST_SCH_TO_MAC(pst, inst);
260 pst.event = EVENT_DL_PAGING_ALLOC;
262 return(MacMessageRouter(&pst, (void *)dlPageAlloc));
265 /*******************************************************************
267 * @brief Handles slot indication at SCH
271 * Function : schCalcSlotValues
274 * Handles TTI indication received from PHY
277 * @return ROK - success
280 * ****************************************************************/
281 void schCalcSlotValues(SlotTimingInfo slotInd, SchSlotValue *schSlotValue, uint16_t numOfSlots)
283 /****************************************************************
284 * PHY_DELTA - the physical layer delta *
285 * SCHED_DELTA - scheduler schedules one slot ahead *
286 * BO_DELTA - this delay is considered for BO response and *
287 * RLC buffer packet to received at MAC *
288 * lower-mac (FAPI filling) will be working on PHY_DELTA *
289 * brdcast scheduler will working on PHY_DELTA + SCHED_DELTA *
290 * RAR scheduler will working on PHY_DELTA + SCHED_DELTA *
291 * msg4 scheduler will working on PHY_DELTA + SCHED_DELTA *
292 * dedicated DL msg scheduler will working *
293 * on PHY_DELTA + SCHED_DELTA + BO_DELTA *
294 ****************************************************************/
296 ADD_DELTA_TO_TIME(slotInd, schSlotValue->currentTime, PHY_DELTA_DL, numOfSlots);
297 ADD_DELTA_TO_TIME(slotInd, schSlotValue->broadcastTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
298 ADD_DELTA_TO_TIME(slotInd, schSlotValue->rarTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
299 ADD_DELTA_TO_TIME(slotInd, schSlotValue->dlMsgTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
300 ADD_DELTA_TO_TIME(slotInd, schSlotValue->ulDciTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
303 /*******************************************************************
305 * @brief Checks if a slot is to be scheduled for SSB transmission
309 * Function : schCheckSsbOcc
312 * Checks if a slot is to be scheduled for SSB transmission
314 * @params[in] SlotTimingInfo slotTime
316 * @return Pdu transmission
318 * ****************************************************************/
319 PduTxOccsaion schCheckSsbOcc(SchCellCb *cell, SlotTimingInfo slotTime)
323 ssb_rep = cell->cellCfg.ssbPeriod;
325 /* Identify SSB ocassion*/
326 if ((slotTime.sfn % SCH_MIB_TRANS == 0) && (slotTime.slot ==0))
328 return NEW_TRANSMISSION;
330 else if(cell->firstSsbTransmitted)
332 if((ssb_rep == 5) && ((slotTime.slot == 0 || slotTime.slot == 10)))
334 else if((slotTime.sfn % (ssb_rep/10) == 0) && slotTime.slot == 0)
337 /* not SSB occassion */
338 return NO_TRANSMISSION;
341 /*******************************************************************
343 * @brief Checks if a slot is to be scheduled for SIB1 transmission
347 * Function : schCheckSib1Occ
350 * Checks if a slot is to be scheduled for SIB1 transmission
352 * @params[in] SlotTimingInfo slotTime
354 * @return Pdu transmission
356 * ****************************************************************/
357 PduTxOccsaion schCheckSib1Occ(SchCellCb *cell, SlotTimingInfo slotTime)
359 /* Identify SIB1 occasions */
360 if((slotTime.sfn % SCH_SIB1_TRANS == 0) && (slotTime.slot ==0))
362 return NEW_TRANSMISSION;
364 else if(cell->firstSib1Transmitted)
366 if((slotTime.sfn % (SIB1_REPETITION_PERIOD/10) == 0) &&
367 (slotTime.slot == 0))
372 /* not SIB1 occassion */
373 return NO_TRANSMISSION;
376 /*******************************************************************
378 * @brief find correct combination of k0-k1 value
382 * Function : findValidK0K1Value
385 * find correct combination of k0-k1 value
387 * @params[in] SchCellCb *cell, SlotTimingInfo currTime
388 * @params[in] uint8_t ueId, bool dedMsg
389 * @params[in] uint8_t *pdschStartSymbol, uint8_t *pdschSymblLen
390 * @params[in] SlotTimingInfo *pdcchTime, SlotTimingInfo *pdschTime
391 * @params[in] SlotTimingInfo *pucchTime, bool isRetx, SchDlHqProcCb *hqP
392 * @return ROK - success
395 *******************************************************************/
396 bool findValidK0K1Value(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId, bool dedMsg,
397 uint8_t *pdschStartSymbol, uint8_t *pdschSymblLen, SlotTimingInfo *pdcchTime,
398 SlotTimingInfo *pdschTime, SlotTimingInfo *pucchTime, bool isRetx, SchDlHqProcCb *hqP)
400 uint8_t numK0 = 0, k0TblIdx = 0, k0Val = 0, k0Index =0 ;
401 uint8_t k1TblIdx = 0, k1Index = 0, k1Val = 0, numK1 = 0;
402 SchUeCb *ueCb = NULLP;
403 SchK0K1TimingInfoTbl *k0K1InfoTbl;
405 ADD_DELTA_TO_TIME(currTime, (*pdcchTime), PHY_DELTA_DL + SCHED_DELTA, cell->numSlots);
407 if(schGetSlotSymbFrmt(pdcchTime->slot, cell->slotFrmtBitMap) != DL_SLOT)
409 /* If it is not a DL slot, cannot schedule PDCCH. Return from here. */
414 if(cell->schDlSlotInfo[pdcchTime->slot]->pdcchUe != 0)
421 ueCb = &cell->ueCb[ueId-1];
422 k0K1InfoTbl = &ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.k0K1InfoTbl;
426 k0K1InfoTbl = &cell->k0K1InfoTbl;
429 numK0 = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].numK0;
430 for(k0TblIdx = 0; k0TblIdx < numK0; k0TblIdx++)
432 k0Index = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k0Index;
435 k0Val = cell->cellCfg.dlCfgCommon.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].k0;
436 *pdschStartSymbol = cell->cellCfg.dlCfgCommon.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].startSymbol;
437 *pdschSymblLen = cell->cellCfg.dlCfgCommon.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].lengthSymbol;
441 if(ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].k0 != NULLP)
443 k0Val = *(ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].k0);
444 *pdschStartSymbol = ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].startSymbol;
445 *pdschSymblLen = ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].symbolLength;
449 ADD_DELTA_TO_TIME((*pdcchTime), (*pdschTime), k0Val, cell->numSlots);
451 if(schGetSlotSymbFrmt(pdschTime->slot, cell->slotFrmtBitMap) != DL_SLOT)
456 if(cell->schDlSlotInfo[pdschTime->slot]->pdschUe != 0)
461 numK1 = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k1TimingInfo.numK1;
462 for(k1TblIdx = 0; k1TblIdx < numK1; k1TblIdx++)
464 k1Index = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k1TimingInfo.k1Indexes[k1TblIdx];
467 k1Val = defaultUlAckTbl[k1Index];
471 if(ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.pucchCfg.dlDataToUlAck)
473 k1Val = ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.pucchCfg.dlDataToUlAck->dlDataToUlAckList[k1Index];
476 ADD_DELTA_TO_TIME((*pdschTime),(*pucchTime), k1Val, cell->numSlots);
478 if(schGetSlotSymbFrmt(pucchTime->slot, cell->slotFrmtBitMap) == DL_SLOT)
483 if(cell->schUlSlotInfo[pucchTime->slot]->pucchUe != 0)
489 ADD_DELTA_TO_TIME((*pucchTime), hqP->pucchTime, 0, cell->numSlots);
495 * Number of symbols in case of retransmisson should be same as it was in
496 * original transmisson. Symbol availablity checks need to be added.
501 /*******************************************************************
503 * @brief Process DL Resource allocation for Page
507 * Function : schProcDlPageAlloc
509 * Functionality: Process DL Resource allocation for Page
511 * @params[in] SchCellCb *cell, SlotTimingInfo currTime, Inst schInst
513 * @return pointer to return Value(ROK, RFAILED)
515 * ****************************************************************/
516 uint8_t schProcDlPageAlloc(SchCellCb *cell, SlotTimingInfo currTime, Inst schInst)
518 DlPageAlloc dlPageAlloc;
519 CmLList *pageInfoNode = NULLP;
520 SchPageInfo *pageInfo = NULLP;
521 SlotTimingInfo pdschTime;
523 uint16_t startPrb = 0, maxFreePRB = 0, nPRB = 0;
524 uint8_t ret = RFAILED;
526 pageInfoNode = schPageInfoSearchFromPageList(currTime, &(cell->pageCb.pageIndInfoRecord[currTime.sfn]));
528 if(pageInfoNode == NULLP)
532 pageInfo = (SchPageInfo *)pageInfoNode->node;
536 dlPageAlloc.cellId = currTime.cellId;
538 ADD_DELTA_TO_TIME(currTime, dlPageAlloc.dlPageTime, PHY_DELTA_DL + SCHED_DELTA, cell->numSlots);
539 dlPageAlloc.shortMsgInd = FALSE;
540 pdschTime = dlPageAlloc.dlPageTime;
542 /*Calculate Best FREE BLOCK with MAX PRB count*/
543 maxFreePRB = searchLargestFreeBlock(cell, pdschTime, &startPrb, DIR_DL);
547 tbSize = calculateEstimateTBSize(pageInfo->msgLen, pageInfo->mcs, NUM_PDSCH_SYMBOL, maxFreePRB, &nPRB);
551 DU_LOG("\nERROR --> SCH: Unable to get any free block for Paging at SFN:%d, SLOT:%d",\
552 pdschTime.sfn, pdschTime.slot);
555 /*Fill PDCCH: PDCCH Cfg is same as SIB1 as Paging will be a broadcast message*/
556 memcpy(dlPageAlloc.pageDlDci.freqDomainResource, cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.freqDomainResource, 6 * sizeof(uint8_t));
557 dlPageAlloc.pageDlDci.durationSymbols = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.durationSymbols;
558 dlPageAlloc.pageDlDci.cceRegMappingType = INTERLEAVED_CCE_REG_MAPPING;
559 dlPageAlloc.pageDlDci.cceReg.interleaved.regBundleSize = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.regBundleSize;
560 dlPageAlloc.pageDlDci.cceReg.interleaved.interleaverSize = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.interleaverSize;
561 dlPageAlloc.pageDlDci.cceReg.interleaved.shiftIndex = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.shiftIndex;
562 dlPageAlloc.pageDlDci.ssStartSymbolIndex = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.startSymbolIndex;
563 dlPageAlloc.pageDlDci.cceIndex = cell->sib1SchCfg.sib1PdcchCfg.dci.cceIndex;
564 dlPageAlloc.pageDlDci.aggregLevel = cell->sib1SchCfg.sib1PdcchCfg.dci.aggregLevel;
565 dlPageAlloc.pageDlDci.precoderGranularity = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.precoderGranularity;
566 dlPageAlloc.pageDlDci.coreSetSize = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.coreSetSize;
568 memcpy(&dlPageAlloc.bwp, &cell->sib1SchCfg.bwp, sizeof(BwpCfg));
571 if(schFillPagePdschCfg(cell, &dlPageAlloc.pageDlSch, pdschTime, tbSize, pageInfo->mcs, startPrb) != ROK)
573 DU_LOG("\nERROR --> SCH: Issue in PDSCH Allocation for Paging at SFN:%d, SLOT:%d",\
574 pdschTime.sfn, pdschTime.slot);
578 /*Fill Page PDU information*/
579 dlPageAlloc.pageDlSch.dlPagePduLen = pageInfo->msgLen;
581 SCH_ALLOC(dlPageAlloc.pageDlSch.dlPagePdu, sizeof(dlPageAlloc.pageDlSch.dlPagePduLen));
583 if(dlPageAlloc.pageDlSch.dlPagePdu == NULLP)
585 DU_LOG("\nERROR --> SCH: Memory Allocation Failed during Page Resource allocation");
588 memcpy(dlPageAlloc.pageDlSch.dlPagePdu, pageInfo->pagePdu, dlPageAlloc.pageDlSch.dlPagePduLen);
590 /* Send msg to MAC */
591 if(sendDlPageAllocToMac(&dlPageAlloc, schInst) != ROK)
593 DU_LOG("\nERROR --> SCH : Sending DL Paging allocation from SCH to MAC failed");
594 SCH_FREE(dlPageAlloc.pageDlSch.dlPagePdu, sizeof(dlPageAlloc.pageDlSch.dlPagePduLen));
601 /*Remove the Page Node*/
602 SCH_FREE(pageInfo->pagePdu, pageInfo->msgLen);
603 schDeleteFromPageInfoList(&(cell->pageCb.pageIndInfoRecord[currTime.sfn]), pageInfoNode);
609 /*******************************************************************
611 * @brief Handles slot indication at SCH
615 * Function : SchProcSlotInd
618 * Handles TTI indication received from PHY
621 * @return ROK - success
624 * ****************************************************************/
625 uint8_t SchProcSlotInd(Pst *pst, SlotTimingInfo *slotInd)
627 uint8_t ueIdx, ret = ROK;
629 DlSchedInfo dlSchedInfo;
630 DlBrdcstAlloc *dlBrdcstAlloc = NULLP;
631 SchCellCb *cell = NULLP;
632 Inst schInst = pst->dstInst-SCH_INST_START;
634 cell = schCb[schInst].cells[schInst];
637 DU_LOG("\nERROR --> SCH : Cell Does not exist");
640 memset(&dlSchedInfo, 0, sizeof(DlSchedInfo));
641 schCalcSlotValues(*slotInd, &dlSchedInfo.schSlotValue, cell->numSlots);
642 dlBrdcstAlloc = &dlSchedInfo.brdcstAlloc;
643 dlBrdcstAlloc->ssbTransmissionMode = NO_TRANSMISSION;
644 dlBrdcstAlloc->sib1TransmissionMode = NO_TRANSMISSION;
646 memcpy(&cell->slotInfo, slotInd, sizeof(SlotTimingInfo));
647 dlBrdcstAlloc->ssbIdxSupported = SSB_IDX_SUPPORTED;
649 dlSchedInfo.cellId = cell->cellId;
650 slot = dlSchedInfo.schSlotValue.broadcastTime.slot;
653 schHandleStartDrxTimer(cell);
656 /* Check for SSB occassion */
657 dlBrdcstAlloc->ssbTransmissionMode = schCheckSsbOcc(cell, dlSchedInfo.schSlotValue.broadcastTime);
658 if(dlBrdcstAlloc->ssbTransmissionMode)
660 if(schBroadcastSsbAlloc(cell, dlSchedInfo.schSlotValue.broadcastTime, dlBrdcstAlloc) != ROK)
662 DU_LOG("\nERROR --> SCH : schBroadcastSsbAlloc failed");
663 dlBrdcstAlloc->ssbTransmissionMode = NO_TRANSMISSION;
667 dlSchedInfo.isBroadcastPres = true;
668 if((dlBrdcstAlloc->ssbTransmissionMode == NEW_TRANSMISSION) && (!cell->firstSsbTransmitted))
669 cell->firstSsbTransmitted = true;
673 /* Check for SIB1 occassion */
674 dlBrdcstAlloc->sib1TransmissionMode = schCheckSib1Occ(cell, dlSchedInfo.schSlotValue.broadcastTime);
675 if(dlBrdcstAlloc->sib1TransmissionMode)
677 if(schBroadcastSib1Alloc(cell, dlSchedInfo.schSlotValue.broadcastTime, dlBrdcstAlloc) != ROK)
679 DU_LOG("\nERROR --> SCH : schBroadcastSib1Alloc failed");
680 dlBrdcstAlloc->sib1TransmissionMode = NO_TRANSMISSION;
684 dlSchedInfo.isBroadcastPres = true;
685 if((dlBrdcstAlloc->sib1TransmissionMode == NEW_TRANSMISSION) && (!cell->firstSib1Transmitted))
686 cell->firstSib1Transmitted = true;
690 /*Process Paging Msg*/
691 schProcDlPageAlloc(cell, *slotInd, schInst);
693 cell->api->SchScheduleSlot(cell, slotInd, schInst);
695 /* Check if any PDU is scheduled at this slot for any UE */
696 for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
698 /* If RAR PDCCH/PDSCH is scheduled for a UE at this slot, fill RAR specific interface
699 * structure to send to MAC */
700 if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.rarTime.slot]->rarAlloc[ueIdx] != NULLP)
702 slot = dlSchedInfo.schSlotValue.rarTime.slot;
703 dlSchedInfo.rarAlloc[ueIdx] = cell->schDlSlotInfo[slot]->rarAlloc[ueIdx];
704 cell->schDlSlotInfo[slot]->rarAlloc[ueIdx] = NULLP;
707 /* If DL-Msg PDCCH/PDSCH is scheduled for a UE at this slot, fill
708 * specific interface structure to send to MAC */
709 if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgAlloc[ueIdx] != NULLP)
711 slot = dlSchedInfo.schSlotValue.dlMsgTime.slot;
712 dlSchedInfo.dlMsgAlloc[ueIdx] = cell->schDlSlotInfo[slot]->dlMsgAlloc[ueIdx];
713 cell->schDlSlotInfo[slot]->dlMsgAlloc[ueIdx] = NULLP;
717 if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.ulDciTime.slot]->ulGrant != NULLP)
719 slot = dlSchedInfo.schSlotValue.ulDciTime.slot;
720 dlSchedInfo.ulGrant = cell->schDlSlotInfo[slot]->ulGrant;
721 cell->schDlSlotInfo[slot]->ulGrant = NULLP;
724 /* Send msg to MAC */
725 ret = sendDlAllocToMac(&dlSchedInfo, schInst);
728 DU_LOG("\nERROR --> SCH : Sending DL Broadcast allocation from SCH to MAC failed");
732 schInitDlSlot(cell->schDlSlotInfo[slot]);
733 schUlResAlloc(cell, schInst);
735 schHandleExpiryDrxTimer(cell);
740 /**********************************************************************
742 **********************************************************************/