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
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 }while(pagInfo != NULLP);
230 cmHashListDelete(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF);
234 /******************************************************************
236 * @brief Send pcch indication to MAC
240 * Function : sendDlPcchIndToMac
242 * Functionality: Send pcch indication to MAC
244 * @Params[in] MacPcchInd *pcchInd
245 * @return ROK - success
248 * ****************************************************************/
250 uint8_t sendDlPcchIndToMac(MacPcchInd *pcchInd)
258 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_PCCH_IND);
260 DU_LOG("\nDEBUG --> DU_APP: Sending DL PCCH indication to MAC for cellId[%d]", pcchInd->cellId);
261 ret = (*packMacDlPcchIndOpts[pst.selector])(&pst, pcchInd);
264 DU_LOG("\nERROR --> DU APP : sendDlPcchIndToMac(): Failed to DL PCCH indication to MAC");
269 DU_LOG("\nERROR --> DU_APP: sendDlPcchIndToMac(): Received pcchInd is NULLP");
276 /*****************************************************************
277 * @brief Handles slot indication from MAC
281 * Function : duHandleSlotInd
284 * Handles slot indication from MAC
286 * @params[in] Post structure pointer
287 * SlotTimingInfo *slotIndInfo
288 * @return ROK - success
292 *****************************************************************/
293 uint8_t duHandleSlotInd(Pst *pst, SlotTimingInfo *slotIndInfo)
295 uint8_t cellIdx = 0, ret = ROK;
296 DuCellCb *duCellCb = NULLP;
300 GET_CELL_IDX(slotIndInfo->cellId, cellIdx);
301 duCellCb = duCb.actvCellLst[cellIdx];
305 duCellCb->currSlotInfo.sfn = slotIndInfo->sfn;
306 duCellCb->currSlotInfo.slot = slotIndInfo->slot;
307 checkPagingRecord(duCellCb);
311 DU_LOG("\nERROR --> DU APP : CellId[%d] doesnot exist", slotIndInfo->cellId);
314 DU_FREE_SHRABL_BUF(pst->region, pst->pool, slotIndInfo, sizeof(SlotTimingInfo));
318 DU_LOG("\nERROR --> DU APP : Recevied null pointer from MAC");
323 /*******************************************************************
325 * @brief Handles cell up indication from MAC
329 * Function : duHandleCellUpInd
332 * Handles cell up indication from MAC
334 * @params[in] Post structure pointer
336 * @return ROK - success
339 * ****************************************************************/
340 uint8_t duHandleCellUpInd(Pst *pst, OduCellId *cellId)
342 DuCellCb *cellCb = NULLP;
344 if(cellId->cellId <=0 || cellId->cellId > MAX_NUM_CELL)
346 DU_LOG("\nERROR --> DU APP : Invalid Cell Id %d in duHandleCellUpInd()", cellId->cellId);
350 if(duGetCellCb(cellId->cellId, &cellCb) != ROK)
353 if((cellCb != NULL) && (cellCb->cellStatus == ACTIVATION_IN_PROGRESS))
355 DU_LOG("\nINFO --> DU APP : 5G-NR Cell %d is UP", cellId->cellId);
356 cellCb->cellStatus = ACTIVATED;
357 gCellStatus = CELL_UP;
359 if(duCfgParam.tempSliceCfg.rrmPolicy)
360 BuildAndSendSliceConfigReq(duCfgParam.tempSliceCfg.rrmPolicy, duCfgParam.tempSliceCfg.totalRrmPolicy, duCfgParam.tempSliceCfg.totalSliceCount);
362 DU_LOG("\nINFO --> DU APP : Raise cell UP alarm for cell id=%d", cellId->cellId);
363 raiseCellAlrm(CELL_UP_ALARM_ID, cellId->cellId);
364 setCellOpState(cellId->cellId, ENABLED, ACTIVE);
369 if((pst->selector == ODU_SELECTOR_LWLC) || (pst->selector == ODU_SELECTOR_TC))
370 DU_FREE_SHRABL_BUF(pst->region, pst->pool, cellId, sizeof(OduCellId));
374 /*******************************************************************
376 * @brief Handle Cell delete response from MAC
380 * Function : DuProcMacCellDeleteRsp
382 * Functionality: Handle Cell delete response from MAC
384 * @params[in] Pointer to MacCellDeleteRsp and Pst
385 * @return ROK - success
388 * ****************************************************************/
390 uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
397 if(deleteRsp->result == SUCCESSFUL_RSP)
399 GET_CELL_IDX(deleteRsp->cellId, cellIdx);
400 DU_LOG("\nINFO --> DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
401 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId))
403 memset(duCb.actvCellLst[cellIdx], 0, sizeof(DuCellCb));
404 gCellStatus = CELL_DOWN;
407 DU_LOG("\nINFO --> DU APP : Raise cell down alarm for cell id=%d", deleteRsp->cellId);
408 raiseCellAlrm(CELL_DOWN_ALARM_ID, deleteRsp->cellId);
409 setCellOpState(deleteRsp->cellId, DISABLED, INACTIVE);
414 DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
419 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
425 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
426 [CELL IDX : %d]", deleteRsp->cellId);
429 DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacCellDeleteRsp));
433 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
439 /*******************************************************************
441 * @brief Sending Cell Delete Req To Mac
445 * Function : sendCellDeleteReqToMac
448 * sending Cell Delete Req To Mac
450 * @params[in] uint16_t cellId
451 * @return ROK - success
455 *****************************************************************/
457 uint8_t sendCellDeleteReqToMac(uint16_t cellId)
461 MacCellDelete *cellDelete = NULLP;
463 DU_ALLOC_SHRABL_BUF(cellDelete, sizeof(MacCellDelete));
466 cellDelete->cellId = cellId;
467 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
469 DU_LOG("\nINFO --> DU APP : Sending Cell Delete Request to MAC");
470 /* Processing one Cell at a time to MAC */
471 ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
474 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
475 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDelete));
480 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to allocate memory");
486 /*******************************************************************
488 * @brief DU preocess Cell Delete Req to MAC
492 * Function : duSendCellDeletReq
494 * Functionality: DU process Cell Delete Req to MAC
496 * @params[in] uint16_t cellId
497 * @return ROK - success
500 * ****************************************************************/
502 uint8_t duSendCellDeletReq(uint16_t cellId)
504 uint16_t cellIdx = 0;
505 DU_LOG("\nINFO --> DU APP : Processing Cell Delete Request ");
506 GET_CELL_IDX(cellId, cellIdx);
508 if(duCb.actvCellLst[cellIdx] == NULLP)
510 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
514 if(duCb.actvCellLst[cellIdx]->cellId != cellId)
516 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
521 if(duCb.actvCellLst[cellIdx]->cellStatus != DELETION_IN_PROGRESS)
523 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellStatus[%d] of cellId[%d] is not correct.\
524 Expected CellStatus is DELETION_IN_PROGRESS",duCb.actvCellLst[cellIdx]->cellStatus, cellId);
528 if(duBuildAndSendMacCellStop(cellId) == RFAILED)
530 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): Failed to build and send cell stop request to MAC for\
538 /*******************************************************************
539 * @brief Free PCCH PDU structure
543 * Function : freePcchPdu
545 * Functionality: Free PCCH PDU structure
547 * @params[in] PCCH_Message_t *pcchMsg
551 * ****************************************************************/
552 void freePcchPdu(PCCH_Message_t *pcchMsg)
554 PagingRrc_t *pagingMsg = NULLP;
555 uint8_t recordIdx = 0;
559 if(pcchMsg->message.choice.c1 != NULLP)
561 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
562 if(pagingMsg != NULLP)
564 if(pagingMsg->pagingRecordList)
566 if(pagingMsg->pagingRecordList->list.array == NULLP)
568 for(recordIdx = 0; recordIdx < pagingMsg->pagingRecordList->list.count; recordIdx++)
570 if(pagingMsg->pagingRecordList->list.array[recordIdx] != NULLP)
572 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
573 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
574 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
577 DU_FREE(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
579 DU_FREE(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
581 DU_FREE(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
583 DU_FREE(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
585 DU_FREE(pcchMsg , sizeof(PCCH_Message_t));
589 /*******************************************************************
590 * @brief Builds the Pcch RRC PDU and forwards it to MAC
594 * Function : BuildAndSendDlPcchIndToMac
596 * Functionality: Builds the Pcch RRC PDU[As per Spec 38.331, Annexure A]
597 * and forwards it to MAC as Buffer along with PF and i_s
599 * @params[in] uint16_t cellId, uint16_t pf, uint8_t i_s,CmLListCp *pageUeLL
601 * @return ROK - success
604 * ****************************************************************/
605 uint8_t BuildAndSendDlPcchIndToMac(uint16_t cellId, uint16_t pf, uint8_t i_s, CmLListCp *pageUeLL)
607 CmLList *node = NULLP, *next = NULLP;
608 DuPagUeRecord *ueRecord = NULLP;
609 PCCH_Message_t *pcchMsg = NULLP;
610 asn_enc_rval_t encRetVal;
611 PagingRrc_t *pagingMsg = NULLP;
612 MacPcchInd *macPcchInd = NULLP;
613 uint8_t recordIdx = 0, ret = RFAILED;
615 /*As per 38.473 Sec 9.3.1.39,5G-S-TMSI :48 Bits >> Bytes and 0 UnusedBits */
616 uint8_t totalByteInTmsi = 6, unusedBitsInTmsi = 0;
618 if(pageUeLL == NULLP || pageUeLL->count == 0)
620 DU_LOG("\nERROR --> DU APP: UE Page Record LL is empty");
626 memset(&encRetVal, 0, sizeof(asn_enc_rval_t));
627 DU_ALLOC(pcchMsg , sizeof(PCCH_Message_t));
630 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(): (pccchMsg) Memory Alloction failed!");
633 pcchMsg->message.present = PCCH_MessageType_PR_c1;
634 DU_ALLOC(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
635 if(pcchMsg->message.choice.c1 == NULLP)
637 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (C1) Memory Alloction failed!");
640 pcchMsg->message.choice.c1->present = PCCH_MessageType__c1_PR_paging;
641 DU_ALLOC(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
643 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
644 if(pagingMsg == NULLP)
646 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging) Memory Alloction failed!");
649 DU_ALLOC(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
650 if(pagingMsg->pagingRecordList == NULLP)
652 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging Record List) Memory Alloction failed!");
656 pagingMsg->pagingRecordList->list.count = pageUeLL->count;
658 /*As per Spec 38.331, maxNrofPageRec : 32 [Maximum number of page records]*/
659 if(pageUeLL->count > MAX_PAGING_UE_RECORDS)
661 pagingMsg->pagingRecordList->list.count = MAX_PAGING_UE_RECORDS;
664 pagingMsg->pagingRecordList->list.size = pageUeLL->count * (sizeof(PagingRecord_t *));
665 DU_ALLOC(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
666 if(pagingMsg->pagingRecordList->list.array == NULLP)
668 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Array) Memory Alloction failed!");
671 for(recordIdx = 0; recordIdx < pageUeLL->count; recordIdx++)
673 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
674 if(pagingMsg->pagingRecordList->list.array[recordIdx] == NULLP)
676 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Record) Memory Alloction failed!");
681 node = pageUeLL->first;
682 while(node && (recordIdx < MAX_PAGING_UE_RECORDS))
685 ueRecord = (DuPagUeRecord *)node->node;
688 /*TODO : When Connected Mode Paging will be supported then I_RNTI will be introduced*/
689 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.present = PagingUE_Identity_PR_ng_5G_S_TMSI;
690 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size = totalByteInTmsi*sizeof(uint8_t);
691 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
692 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
693 if(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf == NULLP)
695 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (5gsTmsi buffer) Memory Allocation failed!");
698 fillBitString(&pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI,\
699 unusedBitsInTmsi, totalByteInTmsi, ueRecord->sTmsi);
703 if(duDelNodeFromLList(pageUeLL, node) == ROK)
704 DU_FREE(ueRecord, sizeof(DuPagUeRecord));
707 if(node != NULLP && (recordIdx < MAX_PAGING_UE_RECORDS))
709 /*This leg is hit because Whole UE REcord List was not traversed as
710 * some issue happened thus exiting the main while*/
713 xer_fprint(stdout, &asn_DEF_PCCH_Message, pcchMsg);
714 memset(encBuf, 0, ENC_BUF_MAX_LEN);
716 /* Encode the PCCH RRC PDU as APER */
717 encRetVal = aper_encode(&asn_DEF_PCCH_Message, 0, pcchMsg, PrepFinalEncBuf,\
720 if(encRetVal.encoded == ENCODE_FAIL)
722 DU_LOG("\nERROR --> F1AP : Could not encode Paging structure (at %s)\n",\
723 encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
728 DU_LOG("\nDEBUG --> F1AP : Created APER encoded buffer for RRC PDU for Pcch indication \n");
730 DU_ALLOC_SHRABL_BUF(macPcchInd, sizeof(MacPcchInd));
731 if(macPcchInd == NULLP)
733 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (macPcchInd) Memory Alloction failed!");
737 macPcchInd->cellId = cellId;
739 macPcchInd->i_s = i_s;
740 macPcchInd->pduLen = encBufSize;
741 DU_ALLOC_SHRABL_BUF(macPcchInd->pcchPdu, macPcchInd->pduLen);
742 if(macPcchInd->pcchPdu == NULLP)
744 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (PcchPDU) Memory Alloction failed!");
747 memcpy(macPcchInd->pcchPdu, encBuf, macPcchInd->pduLen);
748 ret = sendDlPcchIndToMac(macPcchInd);
751 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd->pcchPdu, macPcchInd->pduLen);
752 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd, sizeof(MacPcchInd));
759 freePcchPdu(pcchMsg);
763 /*******************************************************************
764 * @brief Keeping the record of Paging having a particular SFN and index associated
768 * Function : insertPagingRecord
770 * Functionality: Insert record of Paging assoc with particular SFN and index associated
772 * @params[in] DuCellCb* cellCb, uint16_t iterations
773 * DuPagingMsg rcvdF1apPagingParam
775 * @return ROK - success
778 * ****************************************************************/
779 uint8_t insertPagingRecord(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam, uint16_t iterations)
781 uint16_t maxIterations = 0;
782 DuPagInfoList *pagInfoLLFromPF = NULLP;
783 DuPagUeList *pageUeLL = NULLP;
784 DuPagUeRecord *ueRecord = NULLP;
787 printPageList(&(cellCb->pagingInfoMap));
790 /*MAX Iteration : A UE can be paged at every T frames thus MAX determines
791 *how many Paging Frame(s) can be considered for Paging this UE*/
792 maxIterations = MAX_SFN/rcvdF1apPagingParam->T;
793 if(iterations >= maxIterations)
795 DU_LOG("\nERROR --> DU APP: MAX Iterations reached for UEID:%d, thus Paging is dropped!", rcvdF1apPagingParam->pagUeId);
799 /*[Step1]: Extracting the PF from the HasMap between PF and PagingInfoList*/
800 pagInfoLLFromPF = findPagingInfoFromMap(rcvdF1apPagingParam->pagingFrame, &(cellCb->pagingInfoMap));
801 if(pagInfoLLFromPF != NULLP)
803 /*[Step2]: Extracting the PageInfo List for the Paging Indices(i_s)*/
804 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, \
805 &(pagInfoLLFromPF->pagInfoList), CREATE);
807 if(pageUeLL != NULLP)
809 /*[Step3]: Check whether MAX UE Record against this PF and i_s has reached(Spec 38.331, Annexure A)*/
810 if(pageUeLL->pagUeList.count < MAX_PAGING_UE_RECORDS)
812 /*[Step4]: Insert the Paging Record to the end of the UE record List*/
813 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi,\
814 &(pageUeLL->pagUeList), CREATE);
816 if(ueRecord == NULLP)
818 DU_LOG("\nERROR --> DU APP: Unable to create UE Record in PagingList");
821 DU_LOG("\nDEBUG --> DU APP: UE Record created successfully in PagingList");
826 /*Since MAX Page record has reached for this PF thus calculating and
827 *moving this UE to next Paging Cycle*/
828 DU_LOG("\nINFO --> DU APP: Max Page Record reached for PagingFrame:%d",rcvdF1apPagingParam->pagingFrame);
829 rcvdF1apPagingParam->pagingFrame = ((rcvdF1apPagingParam->pagingFrame + rcvdF1apPagingParam->T) % MAX_SFN);
832 return insertPagingRecord(cellCb, rcvdF1apPagingParam, iterations);
836 /*Reaching here means that PF has no entry in the PageLists,
837 *Thus creating, Updating and inseritng the Paging Map, List and UE record.*/
839 DU_ALLOC(pagInfoLLFromPF, sizeof(DuPagInfoList));
841 if(pagInfoLLFromPF == NULLP)
843 DU_LOG("\nERROR --> DU APP: PageInfo Map allocation failed.");
846 pagInfoLLFromPF->pf = rcvdF1apPagingParam->pagingFrame;
847 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, &(pagInfoLLFromPF->pagInfoList), CREATE);
848 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi, &(pageUeLL->pagUeList), CREATE);
849 if(cmHashListInsert(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF, (uint8_t *)&(pagInfoLLFromPF->pf), sizeof(uint16_t)) == RFAILED)
851 DU_LOG("\nERROR --> DU APP: Hash Map Insertion Failed for PF:%d.",rcvdF1apPagingParam->pagingFrame);
855 printPageList(&(cellCb->pagingInfoMap));
863 /*******************************************************************
864 * @brief Calculate and fill paging information of a UE belongs to a particular cell
868 * Function : calcAndFillPagingInfoInCellCb
870 * Functionality: Calculate PO and i_s and
871 * fill paging information of a UE in DuCellCb
873 * @params[in] DuCellCb* cellCb, uint8_t pagUeId,
874 * DuPagingMsg rcvdF1apPagingParam
876 * @return ROK - success
879 * ****************************************************************/
880 uint8_t calcAndFillPagingInfoInCellCb(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam)
883 uint16_t T=0, N=0, pagingFrame = 0, n = 0;
884 uint16_t currentSfn = 0, sfn = 0, newSfn = 0;
889 /* calculate paging frame and paging offset */
890 duPcchCfg = duCfgParam.sib1Params.srvCellCfgCommSib.dlCfg.pcchCfg;
891 rcvdF1apPagingParam->pagingFrameOffset = duPcchCfg.pageFrameOffset;
895 * Fill the Value of T (DRX cycle of the UE)
896 * T = min(UE Specific DRX value allocated by upper layers, default DRX
897 * broadcast in System Information) */
898 if((rcvdF1apPagingParam->pagingDrxPres) && (duPcchCfg.dfltPagingCycle > rcvdF1apPagingParam->pagingDrx))
900 T = rcvdF1apPagingParam->pagingDrx;
904 T = duPcchCfg.dfltPagingCycle;
906 rcvdF1apPagingParam->T = T;
908 /* N= number of total paging frames in T */
910 switch(duPcchCfg.nAndPagingFrmOffsetType)
912 case PCCH_Config__nAndPagingFrameOffset_PR_oneT:
915 case PCCH_Config__nAndPagingFrameOffset_PR_halfT:
918 case PCCH_Config__nAndPagingFrameOffset_PR_quarterT:
921 case PCCH_Config__nAndPagingFrameOffset_PR_oneEighthT:
924 case PCCH_Config__nAndPagingFrameOffset_PR_oneSixteenthT:
932 /* calculate the Value of pagingFrame */
933 /*Refer: 38.304 Sec 7.1: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N)*/
934 //RHS of above formula
935 pagingFrame = (T / N) * ((rcvdF1apPagingParam->pagUeId) % N);
937 //LHS of above formula
940 pagingFrame = (pagingFrame - rcvdF1apPagingParam->pagingFrameOffset)%T;
942 else /*Paging Frame = 0 so thus PF will be calculated on Paging Cycle*/
944 pagingFrame = (T - rcvdF1apPagingParam->pagingFrameOffset)%T;
947 /*Paging Frame(SFN for Paging) has to be determined from current SFN. */
948 /*For eg: If T =128, PF(Calculated above) = 20; SFN can be 20,148,276,...
949 * If currSFN is running as 200 then (newSFN % T) == (T/N)*(UE_ID%N)
950 *Thus SFN at which paging has to be sent needs to be delayed and newSFN = 276*/
952 currentSfn = cellCb->currSlotInfo.sfn;
954 /*Multiplication Factor(x) to find the next best SFN to process paging*/
956 /*Below calculation will determine in which nth cycle of T (DRX cycle),new PF
957 * may fall(Delayed one)*/
958 if(currentSfn > pagingFrame)
960 n = ((currentSfn - pagingFrame) / T) + 1;
964 n = ((pagingFrame - currentSfn) / T) + 1;
967 newSfn = pagingFrame + T * n;
969 /*When pagingFrame is future from currSFN then pagingFrame will be used
970 * else pagingFrame is delayed thus newSFN will be used.*/
971 if(currentSfn <= pagingFrame)
973 if(pagingFrame > currentSfn + PAGING_SCHED_DELTA)
985 if(newSfn > currentSfn + PAGING_SCHED_DELTA)
989 else /*If newSFN is near to currSFN then delay it more by T*/
995 rcvdF1apPagingParam->pagingFrame = (sfn % MAX_SFN);
996 rcvdF1apPagingParam->i_s = ((uint32_t)(floor(rcvdF1apPagingParam->pagUeId / N)) % ns);
998 DU_LOG("\nINFO --> DU APP : Successfully filled paging parameter in DuCellCb");
999 memcpy(&cellCb->tmpPagingInfoOfUe, rcvdF1apPagingParam, sizeof(DuPagingMsg));
1003 DU_LOG("\nINFO --> DU APP : calcAndFillPagingInfoInCellCb(): Received null pointer");
1009 /*******************************************************************
1010 * @brief Paging Processing on a particular cell
1014 * Function : processPagingMsg
1016 * Functionality: Process Paging on a particular cell
1018 * @params[in] uint16_t cellId
1019 * DuPagingMsg rcvdF1apPagingParam
1021 * @return ROK - success
1024 * ****************************************************************/
1025 uint8_t processPagingMsg(uint16_t cellId, DuPagingMsg *rcvdF1apPagingParam)
1027 uint16_t cellIdx = 0, iteration = 0;
1029 GET_CELL_IDX(cellId, cellIdx);
1031 if(duCb.actvCellLst[cellIdx] == NULLP || duCb.actvCellLst[cellIdx]->cellId != cellId)
1033 DU_LOG("\nERROR --> DU APP : processPagingMsg(): CellId[%d] is not found", cellId);
1037 if(calcAndFillPagingInfoInCellCb(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam) != ROK)
1039 DU_LOG("\nERROR --> DU APP : CellCb:%d not present to fill UE Paging Information",cellId);
1042 if(insertPagingRecord(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam, iteration) != ROK)
1044 DU_LOG("\nERROR --> DU APP : Insertion Failed ofUE Paging Information");
1050 /**********************************************************************
1052 **********************************************************************/