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 /* This file contains message handling functionality for DU cell management */
20 #include "common_def.h"
27 #include "du_app_mac_inf.h"
28 #include "du_app_rlc_inf.h"
32 #include "du_cell_mgr.h"
33 #include "PCCH-Config.h"
34 #include "PagingUE-Identity.h"
35 #include "PagingRecord.h"
36 #include "PagingRecordList.h"
37 #include "PagingRrc.h"
38 #include "PCCH-MessageType.h"
39 #include "PCCH-Message.h"
40 #include "odu_common_codec.h"
44 #include "AlarmInterface.h"
45 #include "CmInterface.h"
49 DuMacCellDeleteReq packMacCellDeleteReqOpts[] =
51 packDuMacCellDeleteReq, /* Loose coupling */
52 MacProcCellDeleteReq, /* TIght coupling */
53 packDuMacCellDeleteReq /* Light weight-loose coupling */
56 DuMacDlPcchInd packMacDlPcchIndOpts[] =
58 packDuMacDlPcchInd, /* Loose coupling */
59 MacProcDlPcchInd, /* TIght coupling */
60 packDuMacDlPcchInd /* Light weight-loose coupling */
63 /*******************************************************************
65 * @brief Processes cells to be activated
69 * Function : duProcCellsToBeActivated
72 * - Processes cells to be activated list received in F1SetupRsp
75 * @return ROK - success
78 * ****************************************************************/
79 uint8_t duProcCellsToBeActivated(uint8_t *plmnStr, uint16_t nci, uint16_t nRPci)
82 DuCellCb *cellCb = NULLP;
83 uint8_t cfgIdx, tmpPlmn[4];
85 for(cfgIdx=0; cfgIdx<duCb.numCfgCells; cfgIdx++)
87 memset(tmpPlmn, 0, 4);
88 buildPlmnId(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.plmn, tmpPlmn);
89 if(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.cellId == nci &&
90 (strcmp((const char*)tmpPlmn, (const char*)plmnStr) == 0))
92 cellCb = duCb.cfgCellLst[cfgIdx];
97 DU_LOG("\nERROR --> DU APP : No Cell found for NCI %d", nci);
102 cellCb->cellStatus = ACTIVATION_IN_PROGRESS;
103 cellCb->cellInfo.nrPci = nRPci;
105 if((cmHashListInit(&(cellCb->pagingInfoMap), MAX_SFN, sizeof(DuPagInfoList),\
106 FALSE, CM_HASH_KEYTYPE_CONID, DU_APP_MEM_REGION, DU_POOL)) != ROK)
108 DU_LOG("ERROR --> DU APP: Failed to Initialize the Paging Hash Map");
111 duCb.actvCellLst[cellCb->cellId -1] = cellCb;
114 if(duBuildAndSendMacCellCfg(cellCb->cellId) != ROK)
116 DU_LOG("\nERROR --> DU APP : macCellCfg build and send failed");
117 /* Delete cell from actvCellList */
118 duCb.actvCellLst[cellCb->cellId -1] = NULLP;
119 --(duCb.numActvCells);
125 /*******************************************************************
127 * @brief Handles DU F1Setup Rsp received in F1AP
131 * Function : duProcF1SetupRsp
134 * - Handles DU F1Setup Rsp received in F1AP
136 * @params[in] Pointer to F1SetupRsp
139 ******************************************************************/
140 void duProcF1SetupRsp()
142 DU_LOG("\nINFO --> DU_APP : F1 Setup Response received");
143 duCb.f1Status = TRUE; //Set F1 status as true
146 /*******************************************************************
148 * @brief Returns cellCb based on cell ID
152 * Function : duGetCellCb
154 * Functionality: Returns DU APP CellCb based on cell ID
156 * @params[in] F1AP_PDU_t ASN decoded F1AP message
157 * @return ROK - success
160 * ****************************************************************/
161 uint8_t duGetCellCb(uint16_t cellId, DuCellCb **cellCb)
165 for(cellIdx=0; cellIdx < MAX_NUM_CELL; cellIdx++)
167 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == cellId))
169 *cellCb = duCb.actvCellLst[cellIdx];
176 DU_LOG("\nERROR --> DU APP : Cell Id %d not found in DU APP", cellId);
183 /******************************************************************************
184 * @brief Check Paging Record for a Particular Paging Frame
188 * Function : checkPagingRecord
191 * Check Paging Record for a Particular Paging Frame
193 * @params[in] DuCellCb *cellCb
195 * @return ROK/RFAILURE (uint8_t return)
198 ******************************************************************************/
199 uint8_t checkPagingRecord(DuCellCb *cellCb)
202 DuPagInfoList *pagInfoLLFromPF = NULLP;
203 DuPagUeList *pagInfo = NULLP;
205 /*DUAPP may send PagingReq to MAC for future SFN so that Schedular can
206 * schedule Paging on the exact occurence of the Slot.*/
207 pf = (cellCb->currSlotInfo.sfn + PAGING_SCHED_DELTA) % MAX_SFN;
209 pagInfoLLFromPF = findPagingInfoFromMap(pf, &(cellCb->pagingInfoMap));
210 if(pagInfoLLFromPF == NULLP)
212 /*No Page is present for pf thus exiting*/
218 pagInfo = handlePageInfoLL(pf, NULLD, &(pagInfoLLFromPF->pagInfoList), TRAVERSE_ALL);
221 if(BuildAndSendDlPcchIndToMac(cellCb->cellId, pf, pagInfo->i_s, &(pagInfo->pagUeList)) != ROK)
223 DU_LOG("\nERROR --> DU APP: Issue in Building Page RRC PDU i_s:%d",pagInfo->i_s);
226 handlePageInfoLL(pf, pagInfo->i_s, &(pagInfoLLFromPF->pagInfoList), DELETE);
228 if(pagInfoLLFromPF->pagInfoList.first == NULLP)
232 }while(pagInfo != NULLP);
234 cmHashListDelete(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF);
235 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
239 /******************************************************************
241 * @brief Send pcch indication to MAC
245 * Function : sendDlPcchIndToMac
247 * Functionality: Send pcch indication to MAC
249 * @Params[in] DlPcchInd *pcchInd
250 * @return ROK - success
253 * ****************************************************************/
255 uint8_t sendDlPcchIndToMac(DlPcchInd *pcchInd)
263 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_PCCH_IND);
265 ret = (*packMacDlPcchIndOpts[pst.selector])(&pst, pcchInd);
268 DU_LOG("\nERROR --> DU APP : sendDlPcchIndToMac(): Failed to DL PCCH indication to MAC");
273 DU_LOG("\nERROR --> DU APP: sendDlPcchIndToMac(): Received pcchInd is NULLP");
280 /*****************************************************************
281 * @brief Handles slot indication from MAC
285 * Function : duHandleSlotInd
288 * Handles slot indication from MAC
290 * @params[in] Post structure pointer
291 * SlotTimingInfo *slotIndInfo
292 * @return ROK - success
296 *****************************************************************/
297 uint8_t duHandleSlotInd(Pst *pst, SlotTimingInfo *slotIndInfo)
299 uint8_t cellIdx = 0, ret = ROK;
300 DuCellCb *duCellCb = NULLP;
304 GET_CELL_IDX(slotIndInfo->cellId, cellIdx);
305 duCellCb = duCb.actvCellLst[cellIdx];
309 duCellCb->currSlotInfo.sfn = slotIndInfo->sfn;
310 duCellCb->currSlotInfo.slot = slotIndInfo->slot;
311 checkPagingRecord(duCellCb);
315 DU_LOG("\nERROR --> DU APP : CellId[%d] doesnot exist", slotIndInfo->cellId);
318 DU_FREE_SHRABL_BUF(pst->region, pst->pool, slotIndInfo, sizeof(SlotTimingInfo));
322 DU_LOG("\nERROR --> DU APP : Recevied null pointer from MAC");
327 /*******************************************************************
329 * @brief Handles cell up indication from MAC
333 * Function : duHandleCellUpInd
336 * Handles cell up indication from MAC
338 * @params[in] Post structure pointer
340 * @return ROK - success
343 * ****************************************************************/
344 uint8_t duHandleCellUpInd(Pst *pst, OduCellId *cellId)
346 DuCellCb *cellCb = NULLP;
348 if(cellId->cellId <=0 || cellId->cellId > MAX_NUM_CELL)
350 DU_LOG("\nERROR --> DU APP : Invalid Cell Id %d in duHandleCellUpInd()", cellId->cellId);
354 if(duGetCellCb(cellId->cellId, &cellCb) != ROK)
357 if((cellCb != NULL) && (cellCb->cellStatus == ACTIVATION_IN_PROGRESS))
359 DU_LOG("\nINFO --> DU APP : 5G-NR Cell %d is UP", cellId->cellId);
360 cellCb->cellStatus = ACTIVATED;
361 gCellStatus = CELL_UP;
363 if(duCfgParam.tempSliceCfg.rrmPolicy)
364 BuildAndSendSliceConfigReq(duCfgParam.tempSliceCfg.rrmPolicy, duCfgParam.tempSliceCfg.totalRrmPolicy, duCfgParam.tempSliceCfg.totalSliceCount);
366 DU_LOG("\nINFO --> DU APP : Raise cell UP alarm for cell id=%d", cellId->cellId);
367 raiseCellAlrm(CELL_UP_ALARM_ID, cellId->cellId);
368 setCellOpState(cellId->cellId, ENABLED, ACTIVE);
373 if((pst->selector == ODU_SELECTOR_LWLC) || (pst->selector == ODU_SELECTOR_TC))
374 DU_FREE_SHRABL_BUF(pst->region, pst->pool, cellId, sizeof(OduCellId));
378 /*******************************************************************
380 * @brief Handle Cell delete response from MAC
384 * Function : DuProcMacCellDeleteRsp
386 * Functionality: Handle Cell delete response from MAC
388 * @params[in] Pointer to MacCellDeleteRsp and Pst
389 * @return ROK - success
392 * ****************************************************************/
394 uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
397 uint16_t cellIdx=0, pfIdx=0;
398 DuPagInfoList *pagInfoLLFromPF=NULLP;
402 if(deleteRsp->result == SUCCESSFUL_RSP)
404 GET_CELL_IDX(deleteRsp->cellId, cellIdx);
405 DU_LOG("\nINFO --> DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
406 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId))
408 for(pfIdx =0; pfIdx < MAX_SFN; pfIdx++)
410 pagInfoLLFromPF = findPagingInfoFromMap(pfIdx, &(duCb.actvCellLst[cellIdx]->pagingInfoMap));
413 cmHashListDelete(&(duCb.actvCellLst[cellIdx]->pagingInfoMap), (PTR)pagInfoLLFromPF);
414 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
418 memset(duCb.actvCellLst[cellIdx], 0, sizeof(DuCellCb));
419 gCellStatus = CELL_DOWN;
422 DU_LOG("\nINFO --> DU APP : Raise cell down alarm for cell id=%d", deleteRsp->cellId);
423 raiseCellAlrm(CELL_DOWN_ALARM_ID, deleteRsp->cellId);
424 setCellOpState(deleteRsp->cellId, DISABLED, INACTIVE);
429 DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
434 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
440 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
441 [CELL IDX : %d]", deleteRsp->cellId);
444 DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacCellDeleteRsp));
448 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
454 /*******************************************************************
456 * @brief Sending Cell Delete Req To Mac
460 * Function : sendCellDeleteReqToMac
463 * sending Cell Delete Req To Mac
465 * @params[in] uint16_t cellId
466 * @return ROK - success
470 *****************************************************************/
472 uint8_t sendCellDeleteReqToMac(uint16_t cellId)
476 MacCellDeleteReq *cellDelete = NULLP;
478 DU_ALLOC_SHRABL_BUF(cellDelete, sizeof(MacCellDeleteReq));
481 cellDelete->cellId = cellId;
482 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
484 DU_LOG("\nINFO --> DU APP : Sending Cell Delete Request to MAC");
485 /* Processing one Cell at a time to MAC */
486 ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
489 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
490 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDeleteReq));
495 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to allocate memory");
501 /*******************************************************************
503 * @brief DU preocess Cell Delete Req to MAC
507 * Function : duSendCellDeletReq
509 * Functionality: DU process Cell Delete Req to MAC
511 * @params[in] uint16_t cellId
512 * @return ROK - success
515 * ****************************************************************/
517 uint8_t duSendCellDeletReq(uint16_t cellId)
519 uint16_t cellIdx = 0;
520 DU_LOG("\nINFO --> DU APP : Processing Cell Delete Request ");
521 GET_CELL_IDX(cellId, cellIdx);
523 if(duCb.actvCellLst[cellIdx] == NULLP)
525 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
529 if(duCb.actvCellLst[cellIdx]->cellId != cellId)
531 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
536 if(duCb.actvCellLst[cellIdx]->cellStatus != DELETION_IN_PROGRESS)
538 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellStatus[%d] of cellId[%d] is not correct.\
539 Expected CellStatus is DELETION_IN_PROGRESS",duCb.actvCellLst[cellIdx]->cellStatus, cellId);
543 if(duBuildAndSendMacCellStop(cellId) == RFAILED)
545 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): Failed to build and send cell stop request to MAC for\
553 /*******************************************************************
554 * @brief Free PCCH PDU structure
558 * Function : freePcchPdu
560 * Functionality: Free PCCH PDU structure
562 * @params[in] PCCH_Message_t *pcchMsg
566 * ****************************************************************/
567 void freePcchPdu(PCCH_Message_t *pcchMsg)
569 PagingRrc_t *pagingMsg = NULLP;
570 uint8_t recordIdx = 0;
574 if(pcchMsg->message.choice.c1 != NULLP)
576 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
577 if(pagingMsg != NULLP)
579 if(pagingMsg->pagingRecordList)
581 if(pagingMsg->pagingRecordList->list.array != NULLP)
583 for(recordIdx = 0; recordIdx < pagingMsg->pagingRecordList->list.count; recordIdx++)
585 if(pagingMsg->pagingRecordList->list.array[recordIdx] != NULLP)
587 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
588 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
589 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
592 DU_FREE(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
594 DU_FREE(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
596 DU_FREE(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
598 DU_FREE(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
600 DU_FREE(pcchMsg , sizeof(PCCH_Message_t));
604 /*******************************************************************
605 * @brief Builds the Pcch RRC PDU and forwards it to MAC
609 * Function : BuildAndSendDlPcchIndToMac
611 * Functionality: Builds the Pcch RRC PDU[As per Spec 38.331, Annexure A]
612 * and forwards it to MAC as Buffer along with PF and i_s
614 * @params[in] uint16_t cellId, uint16_t pf, uint8_t i_s,CmLListCp *pageUeLL
616 * @return ROK - success
619 * ****************************************************************/
620 uint8_t BuildAndSendDlPcchIndToMac(uint16_t cellId, uint16_t pf, uint8_t i_s, CmLListCp *pageUeLL)
622 CmLList *node = NULLP, *next = NULLP;
623 DuPagUeRecord *ueRecord = NULLP;
624 PCCH_Message_t *pcchMsg = NULLP;
625 asn_enc_rval_t encRetVal;
626 PagingRrc_t *pagingMsg = NULLP;
627 DlPcchInd *macPcchInd = NULLP;
628 uint8_t recordIdx = 0, ret = RFAILED;
630 /*As per 38.473 Sec 9.3.1.39,5G-S-TMSI :48 Bits >> Bytes and 0 UnusedBits */
631 uint8_t totalByteInTmsi = 6, unusedBitsInTmsi = 0;
633 if(pageUeLL == NULLP || pageUeLL->count == 0)
635 DU_LOG("\nERROR --> DU APP: UE Page Record LL is empty");
641 memset(&encRetVal, 0, sizeof(asn_enc_rval_t));
642 DU_ALLOC(pcchMsg , sizeof(PCCH_Message_t));
645 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(): (pccchMsg) Memory Alloction failed!");
648 pcchMsg->message.present = PCCH_MessageType_PR_c1;
649 DU_ALLOC(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
650 if(pcchMsg->message.choice.c1 == NULLP)
652 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (C1) Memory Alloction failed!");
655 pcchMsg->message.choice.c1->present = PCCH_MessageType__c1_PR_paging;
656 DU_ALLOC(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
658 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
659 if(pagingMsg == NULLP)
661 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging) Memory Alloction failed!");
664 DU_ALLOC(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
665 if(pagingMsg->pagingRecordList == NULLP)
667 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging Record List) Memory Alloction failed!");
671 pagingMsg->pagingRecordList->list.count = pageUeLL->count;
673 /*As per Spec 38.331, maxNrofPageRec : 32 [Maximum number of page records]*/
674 if(pageUeLL->count > MAX_PAGING_UE_RECORDS)
676 pagingMsg->pagingRecordList->list.count = MAX_PAGING_UE_RECORDS;
679 pagingMsg->pagingRecordList->list.size = pageUeLL->count * (sizeof(PagingRecord_t *));
680 DU_ALLOC(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
681 if(pagingMsg->pagingRecordList->list.array == NULLP)
683 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Array) Memory Alloction failed!");
686 for(recordIdx = 0; recordIdx < pageUeLL->count; recordIdx++)
688 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
689 if(pagingMsg->pagingRecordList->list.array[recordIdx] == NULLP)
691 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Record) Memory Alloction failed!");
696 node = pageUeLL->first;
697 while(node && (recordIdx < MAX_PAGING_UE_RECORDS))
700 ueRecord = (DuPagUeRecord *)node->node;
703 /*TODO : When Connected Mode Paging will be supported then I_RNTI will be introduced*/
704 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.present = PagingUE_Identity_PR_ng_5G_S_TMSI;
705 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size = totalByteInTmsi*sizeof(uint8_t);
706 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
707 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
708 if(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf == NULLP)
710 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (5gsTmsi buffer) Memory Allocation failed!");
713 fillBitString(&pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI,\
714 unusedBitsInTmsi, totalByteInTmsi, ueRecord->sTmsi);
718 if(duDelNodeFromLList(pageUeLL, node) == ROK)
719 DU_FREE(ueRecord, sizeof(DuPagUeRecord));
722 if(node != NULLP && (recordIdx < MAX_PAGING_UE_RECORDS))
724 /*This leg is hit because Whole UE REcord List was not traversed as
725 * some issue happened thus exiting the main while*/
728 xer_fprint(stdout, &asn_DEF_PCCH_Message, pcchMsg);
729 memset(encBuf, 0, ENC_BUF_MAX_LEN);
731 /* Encode the PCCH RRC PDU as APER */
732 encRetVal = aper_encode(&asn_DEF_PCCH_Message, 0, pcchMsg, PrepFinalEncBuf,\
735 if(encRetVal.encoded == ENCODE_FAIL)
737 DU_LOG("\nERROR --> F1AP : Could not encode Paging structure (at %s)\n",\
738 encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
743 DU_LOG("\nDEBUG --> F1AP : Created APER encoded buffer for RRC PDU for Pcch indication \n");
745 DU_ALLOC_SHRABL_BUF(macPcchInd, sizeof(DlPcchInd));
746 if(macPcchInd == NULLP)
748 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (macPcchInd) Memory Alloction failed!");
752 macPcchInd->cellId = cellId;
754 macPcchInd->i_s = i_s;
755 macPcchInd->pduLen = encBufSize;
756 DU_ALLOC_SHRABL_BUF(macPcchInd->pcchPdu, macPcchInd->pduLen);
757 if(macPcchInd->pcchPdu == NULLP)
759 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (PcchPDU) Memory Alloction failed!");
762 memcpy(macPcchInd->pcchPdu, encBuf, macPcchInd->pduLen);
763 ret = sendDlPcchIndToMac(macPcchInd);
766 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd->pcchPdu, macPcchInd->pduLen);
767 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd, sizeof(DlPcchInd));
774 freePcchPdu(pcchMsg);
778 /*******************************************************************
779 * @brief Keeping the record of Paging having a particular SFN and index associated
783 * Function : insertPagingRecord
785 * Functionality: Insert record of Paging assoc with particular SFN and index associated
787 * @params[in] DuCellCb* cellCb, uint16_t iterations
788 * DuPagingMsg rcvdF1apPagingParam
790 * @return ROK - success
793 * ****************************************************************/
794 uint8_t insertPagingRecord(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam, uint16_t iterations)
796 uint16_t maxIterations = 0;
797 DuPagInfoList *pagInfoLLFromPF = NULLP;
798 DuPagUeList *pageUeLL = NULLP;
799 DuPagUeRecord *ueRecord = NULLP;
802 printPageList(&(cellCb->pagingInfoMap));
805 /*MAX Iteration : A UE can be paged at every T frames thus MAX determines
806 *how many Paging Frame(s) can be considered for Paging this UE*/
807 maxIterations = MAX_SFN/rcvdF1apPagingParam->T;
808 if(iterations >= maxIterations)
810 DU_LOG("\nERROR --> DU APP: MAX Iterations reached for UEID:%d, thus Paging is dropped!", rcvdF1apPagingParam->pagUeId);
814 /*[Step1]: Extracting the PF from the HasMap between PF and PagingInfoList*/
815 pagInfoLLFromPF = findPagingInfoFromMap(rcvdF1apPagingParam->pagingFrame, &(cellCb->pagingInfoMap));
816 if(pagInfoLLFromPF != NULLP)
818 /*[Step2]: Extracting the PageInfo List for the Paging Indices(i_s)*/
819 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, \
820 &(pagInfoLLFromPF->pagInfoList), CREATE);
822 if(pageUeLL != NULLP)
824 /*[Step3]: Check whether MAX UE Record against this PF and i_s has reached(Spec 38.331, Annexure A)*/
825 if(pageUeLL->pagUeList.count < MAX_PAGING_UE_RECORDS)
827 /*[Step4]: Insert the Paging Record to the end of the UE record List*/
828 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi,\
829 &(pageUeLL->pagUeList), CREATE);
831 if(ueRecord == NULLP)
833 DU_LOG("\nERROR --> DU APP: Unable to create UE Record in PagingList");
836 DU_LOG("\nDEBUG --> DU APP: UE Record created successfully in PagingList");
841 /*Since MAX Page record has reached for this PF thus calculating and
842 *moving this UE to next Paging Cycle*/
843 DU_LOG("\nINFO --> DU APP: Max Page Record reached for PagingFrame:%d",rcvdF1apPagingParam->pagingFrame);
844 rcvdF1apPagingParam->pagingFrame = ((rcvdF1apPagingParam->pagingFrame + rcvdF1apPagingParam->T) % MAX_SFN);
847 return insertPagingRecord(cellCb, rcvdF1apPagingParam, iterations);
851 /*Reaching here means that PF has no entry in the PageLists,
852 *Thus creating, Updating and inseritng the Paging Map, List and UE record.*/
854 DU_ALLOC(pagInfoLLFromPF, sizeof(DuPagInfoList));
856 if(pagInfoLLFromPF == NULLP)
858 DU_LOG("\nERROR --> DU APP: PageInfo Map allocation failed.");
861 pagInfoLLFromPF->pf = rcvdF1apPagingParam->pagingFrame;
862 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, &(pagInfoLLFromPF->pagInfoList), CREATE);
863 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi, &(pageUeLL->pagUeList), CREATE);
864 if(cmHashListInsert(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF, (uint8_t *)&(pagInfoLLFromPF->pf), sizeof(uint16_t)) == RFAILED)
866 DU_LOG("\nERROR --> DU APP: Hash Map Insertion Failed for PF:%d.",rcvdF1apPagingParam->pagingFrame);
870 printPageList(&(cellCb->pagingInfoMap));
878 /*******************************************************************
879 * @brief Calculate and fill paging information of a UE belongs to a particular cell
883 * Function : calcAndFillPagingInfoInCellCb
885 * Functionality: Calculate PO and i_s and
886 * fill paging information of a UE in DuCellCb
888 * @params[in] DuCellCb* cellCb, uint8_t pagUeId,
889 * DuPagingMsg rcvdF1apPagingParam
891 * @return ROK - success
894 * ****************************************************************/
895 uint8_t calcAndFillPagingInfoInCellCb(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam)
898 uint16_t T=0, N=0, pagingFrame = 0, n = 0;
899 uint16_t currentSfn = 0, sfn = 0, newSfn = 0;
904 /* calculate paging frame and paging offset */
905 duPcchCfg = duCfgParam.sib1Params.srvCellCfgCommSib.dlCfg.pcchCfg;
906 rcvdF1apPagingParam->pagingFrameOffset = duPcchCfg.pageFrameOffset;
910 * Fill the Value of T (DRX cycle of the UE)
911 * T = min(UE Specific DRX value allocated by upper layers, default DRX
912 * broadcast in System Information) */
913 if((rcvdF1apPagingParam->pagingDrxPres) && (duPcchCfg.dfltPagingCycle > rcvdF1apPagingParam->pagingDrx))
915 T = rcvdF1apPagingParam->pagingDrx;
919 T = duPcchCfg.dfltPagingCycle;
921 rcvdF1apPagingParam->T = T;
923 /* N= number of total paging frames in T */
925 switch(duPcchCfg.nAndPagingFrmOffsetType)
927 case PCCH_Config__nAndPagingFrameOffset_PR_oneT:
930 case PCCH_Config__nAndPagingFrameOffset_PR_halfT:
933 case PCCH_Config__nAndPagingFrameOffset_PR_quarterT:
936 case PCCH_Config__nAndPagingFrameOffset_PR_oneEighthT:
939 case PCCH_Config__nAndPagingFrameOffset_PR_oneSixteenthT:
947 /* calculate the Value of pagingFrame */
948 /*Refer: 38.304 Sec 7.1: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N)*/
949 //RHS of above formula
950 pagingFrame = (T / N) * ((rcvdF1apPagingParam->pagUeId) % N);
952 //LHS of above formula
955 pagingFrame = (pagingFrame - rcvdF1apPagingParam->pagingFrameOffset)%T;
957 else /*Paging Frame = 0 so thus PF will be calculated on Paging Cycle*/
959 pagingFrame = (T - rcvdF1apPagingParam->pagingFrameOffset)%T;
962 /*Paging Frame(SFN for Paging) has to be determined from current SFN. */
963 /*For eg: If T =128, PF(Calculated above) = 20; SFN can be 20,148,276,...
964 * If currSFN is running as 200 then (newSFN % T) == (T/N)*(UE_ID%N)
965 *Thus SFN at which paging has to be sent needs to be delayed and newSFN = 276*/
967 currentSfn = cellCb->currSlotInfo.sfn;
969 /*Multiplication Factor(x) to find the next best SFN to process paging*/
971 /*Below calculation will determine in which nth cycle of T (DRX cycle),new PF
972 * may fall(Delayed one)*/
973 if(currentSfn > pagingFrame)
975 n = ((currentSfn - pagingFrame) / T) + 1;
979 n = ((pagingFrame - currentSfn) / T) + 1;
982 newSfn = pagingFrame + T * n;
984 /*When pagingFrame is future from currSFN then pagingFrame will be used
985 * else pagingFrame is delayed thus newSFN will be used.*/
986 if(currentSfn <= pagingFrame)
988 if(pagingFrame > currentSfn + PAGING_SCHED_DELTA)
1000 if(newSfn > currentSfn + PAGING_SCHED_DELTA)
1004 else /*If newSFN is near to currSFN then delay it more by T*/
1006 newSfn = newSfn + T;
1010 rcvdF1apPagingParam->pagingFrame = (sfn % MAX_SFN);
1011 rcvdF1apPagingParam->i_s = ((uint32_t)(floor(rcvdF1apPagingParam->pagUeId / N)) % ns);
1013 memcpy(&cellCb->tmpPagingInfoOfUe, rcvdF1apPagingParam, sizeof(DuPagingMsg));
1017 DU_LOG("\nINFO --> DU APP : calcAndFillPagingInfoInCellCb(): Received null pointer");
1023 /*******************************************************************
1024 * @brief Paging Processing on a particular cell
1028 * Function : processPagingMsg
1030 * Functionality: Process Paging on a particular cell
1032 * @params[in] uint16_t cellId
1033 * DuPagingMsg rcvdF1apPagingParam
1035 * @return ROK - success
1038 * ****************************************************************/
1039 uint8_t processPagingMsg(uint16_t cellId, DuPagingMsg *rcvdF1apPagingParam)
1041 uint16_t cellIdx = 0, iteration = 0;
1043 GET_CELL_IDX(cellId, cellIdx);
1045 if(duCb.actvCellLst[cellIdx] == NULLP || duCb.actvCellLst[cellIdx]->cellId != cellId)
1047 DU_LOG("\nERROR --> DU APP : processPagingMsg(): CellId[%d] is not found", cellId);
1051 if(calcAndFillPagingInfoInCellCb(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam) != ROK)
1053 DU_LOG("\nERROR --> DU APP : CellCb:%d not present to fill UE Paging Information",cellId);
1056 if(insertPagingRecord(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam, iteration) != ROK)
1058 DU_LOG("\nERROR --> DU APP : Insertion Failed ofUE Paging Information");
1064 /**********************************************************************
1066 **********************************************************************/