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"
44 #include "sch_utils.h"
49 /*******************************************************************
51 * @brief Handles sending DL broadcast alloc to MAC
55 * Function : sendDlAllocToMac
58 * Sends DL Broadcast Resource Allocation to MAC from SCH
61 * @return ROK - success
64 * ****************************************************************/
65 uint8_t sendDlAllocToMac(DlSchedInfo *dlSchedInfo, Inst inst)
69 memset(&pst, 0, sizeof(Pst));
70 FILL_PST_SCH_TO_MAC(pst, inst);
71 pst.event = EVENT_DL_SCH_INFO;
73 return(MacMessageRouter(&pst, (void *)dlSchedInfo));
76 /*******************************************************************
82 * Function : schFillBoGrantDlSchedInfo
87 * @params[in] SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId
88 * @params[in] bool isRetx, SchDlHqProcCb **hqP
89 * @return ROK - success
92 * ****************************************************************/
93 bool schFillBoGrantDlSchedInfo(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId, bool isRetx, SchDlHqProcCb **hqP)
95 uint8_t pdschNumSymbols = 0, pdschStartSymbol = 0;
97 uint16_t startPrb = 0;
99 uint32_t accumalatedSize = 0;
100 SchUeCb *ueCb = NULLP;
101 DlMsgSchInfo *dciSlotAlloc, *dlMsgAlloc;
102 SlotTimingInfo pdcchTime, pdschTime, pucchTime;
104 GET_CRNTI(crnti,ueId);
105 ueCb = &cell->ueCb[ueId-1];
109 if(schDlGetAvlHqProcess(cell, ueCb, hqP) != ROK)
115 if(findValidK0K1Value(cell, currTime, ueId, ueCb->k0K1TblPrsnt,\
116 &pdschStartSymbol, &pdschNumSymbols, &pdcchTime, &pdschTime, &pucchTime, isRetx, *hqP) != true )
118 /* If a valid combination of slots to scheduled PDCCH, PDSCH and PUCCH is
119 * not found, do not perform resource allocation. Return from here. */
123 /* allocate PDCCH and PDSCH resources for the ue */
124 if(cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] == NULL)
127 SCH_ALLOC(dciSlotAlloc, sizeof(DlMsgSchInfo));
130 DU_LOG("\nERROR --> SCH : Memory Allocation failed for ded DL msg alloc");
133 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = dciSlotAlloc;
134 memset(dciSlotAlloc, 0, sizeof(DlMsgSchInfo));
138 dciSlotAlloc = cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1];
140 /* Dl ded Msg info is copied, this was earlier filled in macSchDlRlcBoInfo */
141 fillDlMsgInfo(dciSlotAlloc, crnti, isRetx, *hqP);
142 dciSlotAlloc->transportBlock[0].ndi = isRetx;
144 accumalatedSize = cell->api->SchScheduleDlLc(pdcchTime, pdschTime, pdschNumSymbols, &startPrb, isRetx, hqP);
146 /*Below case will hit if NO LC(s) are allocated due to resource crunch*/
147 if (!accumalatedSize)
150 /*[Step6]: pdcch and pdsch data is filled */
151 if((schDlRsrcAllocDlMsg(cell, pdschTime, crnti, accumalatedSize, dciSlotAlloc, startPrb, pdschStartSymbol, pdschNumSymbols, isRetx, *hqP)) != ROK)
153 DU_LOG("\nERROR --> SCH : Scheduling of DL dedicated message failed");
155 /* Free the dl ded msg info allocated in macSchDlRlcBoInfo */
156 if(!dciSlotAlloc->dlMsgPdschCfg)
158 SCH_FREE(dciSlotAlloc, sizeof(DlMsgSchInfo));
159 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = NULL;
164 /* TODO : Update the scheduling byte report for multiple LC based on QCI
166 /* As of now, the total number of bytes scheduled for a slot is divided
167 * equally amongst all LC with pending data. This is avoid starving of any
171 accumalatedSize = accumalatedSize/dlMsgAlloc->numLc;
172 for(lcIdx = 0; lcIdx < dlMsgAlloc->numLc; lcIdx ++)
173 dlMsgAlloc->lcSchInfo[lcIdx].schBytes = accumalatedSize;
176 /* Check if both DCI and DL_MSG are sent in the same slot.
177 * If not, allocate memory for DL_MSG PDSCH slot to store PDSCH info */
179 if(pdcchTime.slot == pdschTime.slot)
181 SCH_ALLOC(dciSlotAlloc->dlMsgPdschCfg, sizeof(PdschCfg));
182 if(!dciSlotAlloc->dlMsgPdschCfg)
184 DU_LOG("\nERROR --> SCH : Memory Allocation failed for dciSlotAlloc->dlMsgPdschCfg");
185 SCH_FREE(dciSlotAlloc->dlMsgPdcchCfg, sizeof(PdcchCfg));
186 SCH_FREE(dciSlotAlloc, sizeof(DlMsgSchInfo));
187 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] = NULLP;
190 memcpy(dciSlotAlloc->dlMsgPdschCfg, &dciSlotAlloc->dlMsgPdcchCfg->dci.pdschCfg, sizeof(PdschCfg));
194 /* Allocate memory to schedule dlMsgAlloc to send DL_Msg, pointer will be checked at schProcessSlotInd() */
195 if(cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] == NULLP)
197 SCH_ALLOC(dlMsgAlloc, sizeof(DlMsgSchInfo));
198 if(dlMsgAlloc == NULLP)
200 DU_LOG("\nERROR --> SCH : Memory Allocation failed for dlMsgAlloc");
201 SCH_FREE(dciSlotAlloc->dlMsgPdcchCfg, sizeof(PdcchCfg));
202 if(dciSlotAlloc->dlMsgPdschCfg == NULLP)
204 SCH_FREE(dciSlotAlloc, sizeof(DlMsgSchInfo));
205 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] = NULLP;
209 cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] = dlMsgAlloc;
210 memset(dlMsgAlloc, 0, sizeof(DlMsgSchInfo));
213 dlMsgAlloc = cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1];
215 /* Copy all DL_MSG info */
216 dlMsgAlloc->crnti =crnti;
217 dlMsgAlloc->bwp = dciSlotAlloc->bwp;
218 SCH_ALLOC(dlMsgAlloc->dlMsgPdschCfg, sizeof(PdschCfg));
219 if(dlMsgAlloc->dlMsgPdschCfg)
221 memcpy(dlMsgAlloc->dlMsgPdschCfg, &dciSlotAlloc->dlMsgPdcchCfg->dci.pdschCfg, sizeof(PdschCfg));
225 SCH_FREE(dciSlotAlloc->dlMsgPdcchCfg, sizeof(PdcchCfg));
226 if(dciSlotAlloc->dlMsgPdschCfg == NULLP)
228 SCH_FREE(dciSlotAlloc, sizeof(DlMsgSchInfo));
229 cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] = NULLP;
232 SCH_FREE(dlMsgAlloc, sizeof(DlMsgSchInfo));
233 cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] = NULLP;
234 DU_LOG("\nERROR --> SCH : Memory Allocation failed for dlMsgAlloc->dlMsgPdschCfg");
239 schAllocPucchResource(cell, pucchTime, crnti, ueCb, isRetx, *hqP);
241 cell->schDlSlotInfo[pdcchTime.slot]->pdcchUe = ueId;
242 cell->schDlSlotInfo[pdschTime.slot]->pdschUe = ueId;
243 cell->schUlSlotInfo[pucchTime.slot]->pucchUe = ueId;
245 /*Re-setting the BO's of all DL LCs in this UE*/
246 for(lcIdx = 0; lcIdx < MAX_NUM_LC; lcIdx++)
248 ueCb->dlInfo.dlLcCtxt[lcIdx].bo = 0;
251 /* after allocation is done, unset the bo bit for that ue */
252 UNSET_ONE_BIT(ueId, cell->boIndBitMap);
256 /*******************************************************************
258 * @brief Handles sending DL Page alloc to MAC
262 * Function : sendDlPAgeAllocToMac
265 * Sends DL Page Resource Allocation to MAC from SCH
268 * @return ROK - success
271 * ****************************************************************/
272 uint8_t sendDlPageAllocToMac(DlPageAlloc *dlPageAlloc, Inst inst)
276 memset(&pst, 0, sizeof(Pst));
277 FILL_PST_SCH_TO_MAC(pst, inst);
278 pst.event = EVENT_DL_PAGING_ALLOC;
280 return(MacMessageRouter(&pst, (void *)dlPageAlloc));
283 /*******************************************************************
285 * @brief Handles slot indication at SCH
289 * Function : schCalcSlotValues
292 * Handles TTI indication received from PHY
295 * @return ROK - success
298 * ****************************************************************/
299 void schCalcSlotValues(SlotTimingInfo slotInd, SchSlotValue *schSlotValue, uint16_t numOfSlots)
301 /****************************************************************
302 * PHY_DELTA - the physical layer delta *
303 * SCHED_DELTA - scheduler schedules one slot ahead *
304 * BO_DELTA - this delay is considered for BO response and *
305 * RLC buffer packet to received at MAC *
306 * lower-mac (FAPI filling) will be working on PHY_DELTA *
307 * brdcast scheduler will working on PHY_DELTA + SCHED_DELTA *
308 * RAR scheduler will working on PHY_DELTA + SCHED_DELTA *
309 * msg4 scheduler will working on PHY_DELTA + SCHED_DELTA *
310 * dedicated DL msg scheduler will working *
311 * on PHY_DELTA + SCHED_DELTA + BO_DELTA *
312 ****************************************************************/
314 ADD_DELTA_TO_TIME(slotInd, schSlotValue->currentTime, PHY_DELTA_DL, numOfSlots);
315 ADD_DELTA_TO_TIME(slotInd, schSlotValue->broadcastTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
316 ADD_DELTA_TO_TIME(slotInd, schSlotValue->rarTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
317 ADD_DELTA_TO_TIME(slotInd, schSlotValue->dlMsgTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
318 ADD_DELTA_TO_TIME(slotInd, schSlotValue->ulDciTime, PHY_DELTA_DL + SCHED_DELTA, numOfSlots);
321 /*******************************************************************
323 * @brief Checks if a slot is to be scheduled for SSB transmission
327 * Function : schCheckSsbOcc
330 * Checks if a slot is to be scheduled for SSB transmission
332 * @params[in] SlotTimingInfo slotTime
334 * @return Pdu transmission
336 * ****************************************************************/
337 PduTxOccsaion schCheckSsbOcc(SchCellCb *cell, SlotTimingInfo slotTime)
341 ssb_rep = cell->cellCfg.ssbPeriod;
343 /* Identify SSB ocassion*/
344 if ((slotTime.sfn % SCH_MIB_TRANS == 0) && (slotTime.slot ==0))
346 return NEW_TRANSMISSION;
348 else if(cell->firstSsbTransmitted)
350 if((ssb_rep == 5) && ((slotTime.slot == 0 || slotTime.slot == 10)))
352 else if((slotTime.sfn % (ssb_rep/10) == 0) && slotTime.slot == 0)
355 /* not SSB occassion */
356 return NO_TRANSMISSION;
359 /*******************************************************************
361 * @brief Checks if a slot is to be scheduled for SIB1 transmission
365 * Function : schCheckSib1Occ
368 * Checks if a slot is to be scheduled for SIB1 transmission
370 * @params[in] SlotTimingInfo slotTime
372 * @return Pdu transmission
374 * ****************************************************************/
375 PduTxOccsaion schCheckSib1Occ(SchCellCb *cell, SlotTimingInfo slotTime)
377 /* Identify SIB1 occasions */
378 if((slotTime.sfn % SCH_SIB1_TRANS == 0) && (slotTime.slot ==0))
380 return NEW_TRANSMISSION;
382 else if(cell->firstSib1Transmitted)
384 if((slotTime.sfn % (SIB1_REPETITION_PERIOD/10) == 0) &&
385 (slotTime.slot == 0))
390 /* not SIB1 occassion */
391 return NO_TRANSMISSION;
394 /*******************************************************************
396 * @brief find correct combination of k0-k1 value
400 * Function : findValidK0K1Value
403 * find correct combination of k0-k1 value
405 * @params[in] SchCellCb *cell, SlotTimingInfo currTime
406 * @params[in] uint8_t ueId, bool dedMsg
407 * @params[in] uint8_t *pdschStartSymbol, uint8_t *pdschSymblLen
408 * @params[in] SlotTimingInfo *pdcchTime, SlotTimingInfo *pdschTime
409 * @params[in] SlotTimingInfo *pucchTime, bool isRetx, SchDlHqProcCb *hqP
410 * @return ROK - success
413 *******************************************************************/
414 bool findValidK0K1Value(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId, bool dedMsg,
415 uint8_t *pdschStartSymbol, uint8_t *pdschSymblLen, SlotTimingInfo *pdcchTime,
416 SlotTimingInfo *pdschTime, SlotTimingInfo *pucchTime, bool isRetx, SchDlHqProcCb *hqP)
418 uint8_t numK0 = 0, k0TblIdx = 0, k0Val = 0, k0Index =0 ;
419 uint8_t k1TblIdx = 0, k1Index = 0, k1Val = 0, numK1 = 0;
420 SchUeCb *ueCb = NULLP;
421 SchK0K1TimingInfoTbl *k0K1InfoTbl;
423 ADD_DELTA_TO_TIME(currTime, (*pdcchTime), PHY_DELTA_DL + SCHED_DELTA, cell->numSlots);
425 if(schGetSlotSymbFrmt(pdcchTime->slot, cell->slotFrmtBitMap) != DL_SLOT)
427 /* If it is not a DL slot, cannot schedule PDCCH. Return from here. */
432 if(cell->schDlSlotInfo[pdcchTime->slot]->pdcchUe != 0)
439 ueCb = &cell->ueCb[ueId-1];
440 k0K1InfoTbl = &ueCb->k0K1InfoTbl;
444 k0K1InfoTbl = &cell->k0K1InfoTbl;
447 numK0 = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].numK0;
448 for(k0TblIdx = 0; k0TblIdx < numK0; k0TblIdx++)
450 k0Index = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k0Index;
453 k0Val = cell->cellCfg.dlCfgCommon.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].k0;
454 *pdschStartSymbol = cell->cellCfg.dlCfgCommon.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].startSymbol;
455 *pdschSymblLen = cell->cellCfg.dlCfgCommon.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].lengthSymbol;
459 if(ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].k0 != NULLP)
461 k0Val = *(ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].k0);
462 *pdschStartSymbol = ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].startSymbol;
463 *pdschSymblLen = ueCb->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].symbolLength;
467 ADD_DELTA_TO_TIME((*pdcchTime), (*pdschTime), k0Val, cell->numSlots);
469 if(schGetSlotSymbFrmt(pdschTime->slot, cell->slotFrmtBitMap) != DL_SLOT)
474 if(cell->schDlSlotInfo[pdschTime->slot]->pdschUe != 0)
479 numK1 = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k1TimingInfo.numK1;
480 for(k1TblIdx = 0; k1TblIdx < numK1; k1TblIdx++)
482 k1Index = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k1TimingInfo.k1Indexes[k1TblIdx];
485 k1Val = defaultUlAckTbl[k1Index];
489 if(ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.pucchCfg.dlDataToUlAck)
491 k1Val = ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.pucchCfg.dlDataToUlAck->dlDataToUlAckList[k1Index];
494 ADD_DELTA_TO_TIME((*pdschTime),(*pucchTime), k1Val, cell->numSlots);
496 if(schGetSlotSymbFrmt(pucchTime->slot, cell->slotFrmtBitMap) == DL_SLOT)
501 if(cell->schUlSlotInfo[pucchTime->slot]->pucchUe != 0)
507 ADD_DELTA_TO_TIME((*pucchTime), hqP->pucchTime, 0, cell->numSlots);
509 pdcchTime->cellId = cell->cellId;
510 pdschTime->cellId = cell->cellId;
516 * Number of symbols in case of retransmisson should be same as it was in
517 * original transmisson. Symbol availablity checks need to be added.
522 /*******************************************************************
524 * @brief Process DL Resource allocation for Page
528 * Function : schProcDlPageAlloc
530 * Functionality: Process DL Resource allocation for Page
532 * @params[in] SchCellCb *cell, SlotTimingInfo currTime, Inst schInst
534 * @return pointer to return Value(ROK, RFAILED)
536 * ****************************************************************/
537 uint8_t schProcDlPageAlloc(SchCellCb *cell, SlotTimingInfo currTime, Inst schInst)
539 DlPageAlloc dlPageAlloc;
540 CmLList *pageInfoNode = NULLP;
541 SchPageInfo *pageInfo = NULLP;
542 SlotTimingInfo pdschTime;
544 uint16_t startPrb = 0, maxFreePRB = 0, nPRB = 0;
545 uint8_t ret = RFAILED;
547 pageInfoNode = schPageInfoSearchFromPageList(currTime, &(cell->pageCb.pageIndInfoRecord[currTime.sfn]));
549 if(pageInfoNode == NULLP)
553 pageInfo = (SchPageInfo *)pageInfoNode->node;
557 dlPageAlloc.cellId = currTime.cellId;
559 ADD_DELTA_TO_TIME(currTime, dlPageAlloc.dlPageTime, PHY_DELTA_DL + SCHED_DELTA, cell->numSlots);
560 dlPageAlloc.shortMsgInd = FALSE;
561 pdschTime = dlPageAlloc.dlPageTime;
563 /*Calculate Best FREE BLOCK with MAX PRB count*/
564 maxFreePRB = searchLargestFreeBlock(cell, pdschTime, &startPrb, DIR_DL);
568 tbSize = calculateEstimateTBSize(pageInfo->msgLen, pageInfo->mcs, NUM_PDSCH_SYMBOL, maxFreePRB, &nPRB);
572 DU_LOG("\nERROR --> SCH: Unable to get any free block for Paging at SFN:%d, SLOT:%d",\
573 pdschTime.sfn, pdschTime.slot);
576 /*Fill PDCCH: PDCCH Cfg is same as SIB1 as Paging will be a broadcast message*/
577 memcpy(dlPageAlloc.pageDlDci.freqDomainResource, cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.freqDomainResource, 6 * sizeof(uint8_t));
578 dlPageAlloc.pageDlDci.durationSymbols = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.durationSymbols;
579 dlPageAlloc.pageDlDci.cceRegMappingType = INTERLEAVED_CCE_REG_MAPPING;
580 dlPageAlloc.pageDlDci.cceReg.interleaved.regBundleSize = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.regBundleSize;
581 dlPageAlloc.pageDlDci.cceReg.interleaved.interleaverSize = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.interleaverSize;
582 dlPageAlloc.pageDlDci.cceReg.interleaved.shiftIndex = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.shiftIndex;
583 dlPageAlloc.pageDlDci.ssStartSymbolIndex = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.startSymbolIndex;
584 dlPageAlloc.pageDlDci.cceIndex = cell->sib1SchCfg.sib1PdcchCfg.dci.cceIndex;
585 dlPageAlloc.pageDlDci.aggregLevel = cell->sib1SchCfg.sib1PdcchCfg.dci.aggregLevel;
586 dlPageAlloc.pageDlDci.precoderGranularity = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.precoderGranularity;
587 dlPageAlloc.pageDlDci.coreSetSize = cell->sib1SchCfg.sib1PdcchCfg.coresetCfg.coreSetSize;
589 memcpy(&dlPageAlloc.bwp, &cell->sib1SchCfg.bwp, sizeof(BwpCfg));
592 if(schFillPagePdschCfg(cell, &dlPageAlloc.pageDlSch, pdschTime, tbSize, pageInfo->mcs, startPrb) != ROK)
594 DU_LOG("\nERROR --> SCH: Issue in PDSCH Allocation for Paging at SFN:%d, SLOT:%d",\
595 pdschTime.sfn, pdschTime.slot);
599 /*Fill Page PDU information*/
600 dlPageAlloc.pageDlSch.dlPagePduLen = pageInfo->msgLen;
602 SCH_ALLOC(dlPageAlloc.pageDlSch.dlPagePdu, sizeof(dlPageAlloc.pageDlSch.dlPagePduLen));
604 if(dlPageAlloc.pageDlSch.dlPagePdu == NULLP)
606 DU_LOG("\nERROR --> SCH: Memory Allocation Failed during Page Resource allocation");
609 memcpy(dlPageAlloc.pageDlSch.dlPagePdu, pageInfo->pagePdu, dlPageAlloc.pageDlSch.dlPagePduLen);
611 /* Send msg to MAC */
612 if(sendDlPageAllocToMac(&dlPageAlloc, schInst) != ROK)
614 DU_LOG("\nERROR --> SCH : Sending DL Paging allocation from SCH to MAC failed");
615 SCH_FREE(dlPageAlloc.pageDlSch.dlPagePdu, sizeof(dlPageAlloc.pageDlSch.dlPagePduLen));
622 /*Remove the Page Node*/
623 SCH_FREE(pageInfo->pagePdu, pageInfo->msgLen);
624 schDeleteFromPageInfoList(&(cell->pageCb.pageIndInfoRecord[currTime.sfn]), pageInfoNode);
630 /*******************************************************************
632 * @brief Handles slot indication at SCH
636 * Function : SchProcSlotInd
639 * Handles TTI indication received from PHY
642 * @return ROK - success
645 * ****************************************************************/
646 uint8_t SchProcSlotInd(Pst *pst, SlotTimingInfo *slotInd)
648 uint8_t ueIdx, ret = ROK;
650 DlSchedInfo dlSchedInfo;
651 DlBrdcstAlloc *dlBrdcstAlloc = NULLP;
652 SchCellCb *cell = NULLP;
653 Inst schInst = pst->dstInst-SCH_INST_START;
655 cell = schCb[schInst].cells[schInst];
658 DU_LOG("\nERROR --> SCH : Cell Does not exist");
661 memset(&dlSchedInfo, 0, sizeof(DlSchedInfo));
662 schCalcSlotValues(*slotInd, &dlSchedInfo.schSlotValue, cell->numSlots);
663 dlBrdcstAlloc = &dlSchedInfo.brdcstAlloc;
664 dlBrdcstAlloc->ssbTransmissionMode = NO_TRANSMISSION;
665 dlBrdcstAlloc->sib1TransmissionMode = NO_TRANSMISSION;
667 memcpy(&cell->slotInfo, slotInd, sizeof(SlotTimingInfo));
668 dlBrdcstAlloc->ssbIdxSupported = SSB_IDX_SUPPORTED;
670 dlSchedInfo.cellId = cell->cellId;
671 slot = dlSchedInfo.schSlotValue.broadcastTime.slot;
674 schHandleStartDrxTimer(cell);
677 /* Check for SSB occassion */
678 dlBrdcstAlloc->ssbTransmissionMode = schCheckSsbOcc(cell, dlSchedInfo.schSlotValue.broadcastTime);
679 if(dlBrdcstAlloc->ssbTransmissionMode)
681 if(schBroadcastSsbAlloc(cell, dlSchedInfo.schSlotValue.broadcastTime, dlBrdcstAlloc) != ROK)
683 DU_LOG("\nERROR --> SCH : schBroadcastSsbAlloc failed");
684 dlBrdcstAlloc->ssbTransmissionMode = NO_TRANSMISSION;
688 dlSchedInfo.isBroadcastPres = true;
689 if((dlBrdcstAlloc->ssbTransmissionMode == NEW_TRANSMISSION) && (!cell->firstSsbTransmitted))
690 cell->firstSsbTransmitted = true;
694 /* Check for SIB1 occassion */
695 dlBrdcstAlloc->sib1TransmissionMode = schCheckSib1Occ(cell, dlSchedInfo.schSlotValue.broadcastTime);
696 if(dlBrdcstAlloc->sib1TransmissionMode)
698 if(schBroadcastSib1Alloc(cell, dlSchedInfo.schSlotValue.broadcastTime, dlBrdcstAlloc) != ROK)
700 DU_LOG("\nERROR --> SCH : schBroadcastSib1Alloc failed");
701 dlBrdcstAlloc->sib1TransmissionMode = NO_TRANSMISSION;
705 dlSchedInfo.isBroadcastPres = true;
706 if((dlBrdcstAlloc->sib1TransmissionMode == NEW_TRANSMISSION) && (!cell->firstSib1Transmitted))
707 cell->firstSib1Transmitted = true;
711 /*Process Paging Msg*/
712 schProcDlPageAlloc(cell, *slotInd, schInst);
714 cell->api->SchScheduleSlot(cell, slotInd, schInst);
716 /* Check if any PDU is scheduled at this slot for any UE */
717 for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
719 /* If RAR PDCCH/PDSCH is scheduled for a UE at this slot, fill RAR specific interface
720 * structure to send to MAC */
721 if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.rarTime.slot]->rarAlloc[ueIdx] != NULLP)
723 slot = dlSchedInfo.schSlotValue.rarTime.slot;
724 dlSchedInfo.rarAlloc[ueIdx] = cell->schDlSlotInfo[slot]->rarAlloc[ueIdx];
725 cell->schDlSlotInfo[slot]->rarAlloc[ueIdx] = NULLP;
728 /* If DL-Msg PDCCH/PDSCH is scheduled for a UE at this slot, fill
729 * specific interface structure to send to MAC */
730 if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgAlloc[ueIdx] != NULLP)
732 slot = dlSchedInfo.schSlotValue.dlMsgTime.slot;
733 dlSchedInfo.dlMsgAlloc[ueIdx] = cell->schDlSlotInfo[slot]->dlMsgAlloc[ueIdx];
734 cell->schDlSlotInfo[slot]->dlMsgAlloc[ueIdx] = NULLP;
738 if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.ulDciTime.slot]->ulGrant != NULLP)
740 slot = dlSchedInfo.schSlotValue.ulDciTime.slot;
741 dlSchedInfo.ulGrant = cell->schDlSlotInfo[slot]->ulGrant;
742 cell->schDlSlotInfo[slot]->ulGrant = NULLP;
745 /* Send msg to MAC */
746 ret = sendDlAllocToMac(&dlSchedInfo, schInst);
749 DU_LOG("\nERROR --> SCH : Sending DL Broadcast allocation from SCH to MAC failed");
753 /* Update DL statistics */
754 if(schCb[schInst].statistics.dlTotalPrbUsage)
756 schCb[schInst].statistics.dlTotalPrbUsage->numPrbUsedForTx += cell->schDlSlotInfo[slot]->prbAlloc.numPrbAlloc;
757 schCb[schInst].statistics.dlTotalPrbUsage->totalPrbAvailForTx += MAX_NUM_RB;
760 /* Re-initialize DL slot */
761 schInitDlSlot(cell->schDlSlotInfo[slot]);
763 /* Send UL Resource allocation to MAC */
764 schUlResAlloc(cell, schInst);
767 schHandleExpiryDrxTimer(cell);
773 /**********************************************************************
775 **********************************************************************/