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 /*******************************************************************
58 * @brief Processes cells to be activated
62 * Function : duProcCellsToBeActivated
65 * - Processes cells to be activated list received in F1SetupRsp
68 * @return ROK - success
71 * ****************************************************************/
72 uint8_t duProcCellsToBeActivated(uint8_t *plmnStr, uint16_t nci, uint16_t nRPci)
75 DuCellCb *cellCb = NULLP;
76 uint8_t cfgIdx, tmpPlmn[4];
78 for(cfgIdx=0; cfgIdx<duCb.numCfgCells; cfgIdx++)
80 memset(tmpPlmn, 0, 4);
81 buildPlmnId(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.plmn, tmpPlmn);
82 if(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.cellId == nci &&
83 (strcmp((const char*)tmpPlmn, (const char*)plmnStr) == 0))
85 cellCb = duCb.cfgCellLst[cfgIdx];
90 DU_LOG("\nERROR --> DU APP : No Cell found for NCI %d", nci);
95 cellCb->cellStatus = ACTIVATION_IN_PROGRESS;
96 cellCb->cellInfo.nrPci = nRPci;
98 if((cmHashListInit(&(cellCb->pagingInfoMap), MAX_SFN, sizeof(DuPagInfoList),\
99 FALSE, CM_HASH_KEYTYPE_CONID, DU_APP_MEM_REGION, DU_POOL)) != ROK)
101 DU_LOG("ERROR --> DU APP: Failed to Initialize the Paging Hash Map");
104 duCb.actvCellLst[cellCb->cellId -1] = cellCb;
107 if(duBuildAndSendMacCellCfg(cellCb->cellId) != ROK)
109 DU_LOG("\nERROR --> DU APP : macCellCfg build and send failed");
110 /* Delete cell from actvCellList */
111 duCb.actvCellLst[cellCb->cellId -1] = NULLP;
112 --(duCb.numActvCells);
118 /*******************************************************************
120 * @brief Handles DU F1Setup Rsp received in F1AP
124 * Function : duProcF1SetupRsp
127 * - Handles DU F1Setup Rsp received in F1AP
129 * @params[in] Pointer to F1SetupRsp
132 ******************************************************************/
133 void duProcF1SetupRsp()
135 DU_LOG("\nINFO --> DU_APP : F1 Setup Response received");
136 duCb.f1Status = TRUE; //Set F1 status as true
139 /*******************************************************************
141 * @brief Returns cellCb based on cell ID
145 * Function : duGetCellCb
147 * Functionality: Returns DU APP CellCb based on cell ID
149 * @params[in] F1AP_PDU_t ASN decoded F1AP message
150 * @return ROK - success
153 * ****************************************************************/
154 uint8_t duGetCellCb(uint16_t cellId, DuCellCb **cellCb)
158 for(cellIdx=0; cellIdx < MAX_NUM_CELL; cellIdx++)
160 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == cellId))
162 *cellCb = duCb.actvCellLst[cellIdx];
169 DU_LOG("\nERROR --> DU APP : Cell Id %d not found in DU APP", cellId);
176 /******************************************************************************
177 * @brief Check Paging Record for a Particular Paging Frame
181 * Function : checkPagingRecord
184 * Check Paging Record for a Particular Paging Frame
186 * @params[in] DuCellCb *cellCb
191 ******************************************************************************/
192 uint8_t checkPagingRecord(DuCellCb *cellCb)
195 DuPagInfoList *pagInfoLLFromPF = NULLP;
196 DuPagUeList *pagInfo = NULLP;
198 /*DUAPP may send PagingReq to MAC for future SFN so that Schedular can
199 * schedule Paging on the exact occurence of the Slot.*/
200 pf = (cellCb->currSlotInfo.sfn + PAGING_SCHED_DELTA) % MAX_SFN;
202 pagInfoLLFromPF = findPagingInfoFromMap(pf, &(cellCb->pagingInfoMap));
203 if(pagInfoLLFromPF == NULLP)
205 /*No Page is present for pf thus exiting*/
211 pagInfo = handlePageInfoLL(pf, NULLD, &(pagInfoLLFromPF->pagInfoList), TRAVERSE_ALL);
214 if(buildAndSendPagingReqToMac(pf, pagInfo->i_s, &(pagInfo->pagUeList)) != ROK)
216 DU_LOG("\nERROR --> DU APP: Issue in Building Page RRC PDU i_s:%d",pagInfo->i_s);
219 handlePageInfoLL(pf, pagInfo->i_s, &(pagInfoLLFromPF->pagInfoList), DELETE);
221 }while(pagInfo != NULLP);
223 cmHashListDelete(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF);
227 /*****************************************************************
228 * @brief Handles slot indication from MAC
232 * Function : duHandleSlotInd
235 * Handles slot indication from MAC
237 * @params[in] Post structure pointer
238 * SlotTimingInfo *slotIndInfo
239 * @return ROK - success
243 *****************************************************************/
244 uint8_t duHandleSlotInd(Pst *pst, SlotTimingInfo *slotIndInfo)
246 uint8_t cellIdx = 0, ret = ROK;
247 DuCellCb *duCellCb = NULLP;
251 GET_CELL_IDX(slotIndInfo->cellId, cellIdx);
252 duCellCb = duCb.actvCellLst[cellIdx];
256 duCellCb->currSlotInfo.sfn = slotIndInfo->sfn;
257 duCellCb->currSlotInfo.slot = slotIndInfo->slot;
258 checkPagingRecord(duCellCb);
262 DU_LOG("\nERROR --> DU APP : CellId[%d] doesnot exist", slotIndInfo->cellId);
265 DU_FREE_SHRABL_BUF(pst->region, pst->pool, slotIndInfo, sizeof(SlotTimingInfo));
269 DU_LOG("\nERROR --> DU APP : Recevied null pointer from MAC");
274 /*******************************************************************
276 * @brief Handles cell up indication from MAC
280 * Function : duHandleCellUpInd
283 * Handles cell up indication from MAC
285 * @params[in] Post structure pointer
287 * @return ROK - success
290 * ****************************************************************/
291 uint8_t duHandleCellUpInd(Pst *pst, OduCellId *cellId)
293 DuCellCb *cellCb = NULLP;
295 if(cellId->cellId <=0 || cellId->cellId > MAX_NUM_CELL)
297 DU_LOG("\nERROR --> DU APP : Invalid Cell Id %d in duHandleCellUpInd()", cellId->cellId);
301 if(duGetCellCb(cellId->cellId, &cellCb) != ROK)
304 if((cellCb != NULL) && (cellCb->cellStatus == ACTIVATION_IN_PROGRESS))
306 DU_LOG("\nINFO --> DU APP : 5G-NR Cell %d is UP", cellId->cellId);
307 cellCb->cellStatus = ACTIVATED;
308 gCellStatus = CELL_UP;
310 if(duCfgParam.tempSliceCfg.rrmPolicy)
311 BuildAndSendSliceConfigReq(duCfgParam.tempSliceCfg.rrmPolicy, duCfgParam.tempSliceCfg.totalRrmPolicy, duCfgParam.tempSliceCfg.totalSliceCount);
313 DU_LOG("\nINFO --> DU APP : Raise cell UP alarm for cell id=%d", cellId->cellId);
314 raiseCellAlrm(CELL_UP_ALARM_ID, cellId->cellId);
315 setCellOpState(cellId->cellId, ENABLED, ACTIVE);
320 if((pst->selector == ODU_SELECTOR_LWLC) || (pst->selector == ODU_SELECTOR_TC))
321 DU_FREE_SHRABL_BUF(pst->region, pst->pool, cellId, sizeof(OduCellId));
325 /*******************************************************************
327 * @brief Handle Cell delete response from MAC
331 * Function : DuProcMacCellDeleteRsp
333 * Functionality: Handle Cell delete response from MAC
335 * @params[in] Pointer to MacCellDeleteRsp and Pst
336 * @return ROK - success
339 * ****************************************************************/
341 uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
348 if(deleteRsp->result == SUCCESSFUL_RSP)
350 GET_CELL_IDX(deleteRsp->cellId, cellIdx);
351 DU_LOG("\nINFO --> DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
352 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId))
354 memset(duCb.actvCellLst[cellIdx], 0, sizeof(DuCellCb));
355 gCellStatus = CELL_DOWN;
358 DU_LOG("\nINFO --> DU APP : Raise cell down alarm for cell id=%d", deleteRsp->cellId);
359 raiseCellAlrm(CELL_DOWN_ALARM_ID, deleteRsp->cellId);
360 setCellOpState(deleteRsp->cellId, DISABLED, INACTIVE);
365 DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
370 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
376 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
377 [CELL IDX : %d]", deleteRsp->cellId);
380 DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacCellDeleteRsp));
384 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
390 /*******************************************************************
392 * @brief Sending Cell Delete Req To Mac
396 * Function : sendCellDeleteReqToMac
399 * sending Cell Delete Req To Mac
401 * @params[in] uint16_t cellId
402 * @return ROK - success
406 *****************************************************************/
408 uint8_t sendCellDeleteReqToMac(uint16_t cellId)
412 MacCellDelete *cellDelete = NULLP;
414 DU_ALLOC_SHRABL_BUF(cellDelete, sizeof(MacCellDelete));
417 cellDelete->cellId = cellId;
418 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
420 DU_LOG("\nINFO --> DU APP : Sending Cell Delete Request to MAC");
421 /* Processing one Cell at a time to MAC */
422 ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
425 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
426 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDelete));
431 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to allocate memory");
437 /*******************************************************************
439 * @brief DU preocess Cell Delete Req to MAC
443 * Function : duSendCellDeletReq
445 * Functionality: DU process Cell Delete Req to MAC
447 * @params[in] uint16_t cellId
448 * @return ROK - success
451 * ****************************************************************/
453 uint8_t duSendCellDeletReq(uint16_t cellId)
455 uint16_t cellIdx = 0;
456 DU_LOG("\nINFO --> DU APP : Processing Cell Delete Request ");
457 GET_CELL_IDX(cellId, cellIdx);
459 if(duCb.actvCellLst[cellIdx] == NULLP)
461 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
465 if(duCb.actvCellLst[cellIdx]->cellId != cellId)
467 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
472 if(duCb.actvCellLst[cellIdx]->cellStatus != DELETION_IN_PROGRESS)
474 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellStatus[%d] of cellId[%d] is not correct.\
475 Expected CellStatus is DELETION_IN_PROGRESS",duCb.actvCellLst[cellIdx]->cellStatus, cellId);
479 if(duBuildAndSendMacCellStop(cellId) == RFAILED)
481 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): Failed to build and send cell stop request to MAC for\
489 /*******************************************************************
490 * @brief Free PCCH PDU structure
494 * Function : freePcchPdu
496 * Functionality: Free PCCH PDU structure
498 * @params[in] PCCH_Message_t *pcchMsg
502 * ****************************************************************/
503 void freePcchPdu(PCCH_Message_t *pcchMsg)
505 PagingRrc_t *pagingMsg = NULLP;
506 uint8_t recordIdx = 0;
510 if(pcchMsg->message.choice.c1 != NULLP)
512 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
513 if(pagingMsg != NULLP)
515 if(pagingMsg->pagingRecordList)
517 if(pagingMsg->pagingRecordList->list.array == NULLP)
519 for(recordIdx = 0; recordIdx < pagingMsg->pagingRecordList->list.count; recordIdx++)
521 if(pagingMsg->pagingRecordList->list.array[recordIdx] != NULLP)
523 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
524 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
525 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
528 DU_FREE(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
530 DU_FREE(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
532 DU_FREE(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
534 DU_FREE(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
536 DU_FREE(pcchMsg , sizeof(PCCH_Message_t));
540 /*******************************************************************
541 * @brief Builds the Paging RRC PDU and forwards it to MAC
545 * Function : buildAndSendPagingReqToMac
547 * Functionality: Builds the Paging RRC PDU[As per Spec 38.331, Annexure A]
548 * and forwards it to MAC as Buffer along with PF and i_s
550 * @params[in] uint16_t pf, uint8_t i_s,CmLListCp *pageUeLL
552 * @return ROK - success
555 * ****************************************************************/
556 uint8_t buildAndSendPagingReqToMac(uint16_t pf, uint8_t i_s, CmLListCp *pageUeLL)
558 CmLList *node = NULLP, *next = NULLP;
559 DuPagUeRecord *ueRecord = NULLP;
560 PCCH_Message_t *pcchMsg = NULLP;
561 asn_enc_rval_t encRetVal;
562 PagingRrc_t *pagingMsg = NULLP;
563 MacPageReq *macPageReq = NULLP;
565 uint8_t recordIdx = 0, ret = RFAILED;
567 /*As per 38.473 Sec 9.3.1.39,5G-S-TMSI :48 Bits >> Bytes and 0 UnusedBits */
568 uint8_t totalByteInTmsi = 6, unusedBitsInTmsi = 0;
570 if(pageUeLL == NULLP || pageUeLL->count == 0)
572 DU_LOG("\nERROR --> DU APP: UE Page Record LL is empty");
578 memset(&encRetVal, 0, sizeof(asn_enc_rval_t));
579 DU_ALLOC(pcchMsg , sizeof(PCCH_Message_t));
582 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(): (pccchMsg) Memory Alloction failed!");
585 pcchMsg->message.present = PCCH_MessageType_PR_c1;
586 DU_ALLOC(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
587 if(pcchMsg->message.choice.c1 == NULLP)
589 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (C1) Memory Alloction failed!");
592 pcchMsg->message.choice.c1->present = PCCH_MessageType__c1_PR_paging;
593 DU_ALLOC(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
595 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
596 if(pagingMsg == NULLP)
598 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (Paging) Memory Alloction failed!");
601 DU_ALLOC(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
602 if(pagingMsg->pagingRecordList == NULLP)
604 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (Paging Record List) Memory Alloction failed!");
608 pagingMsg->pagingRecordList->list.count = pageUeLL->count;
610 /*As per Spec 38.331, maxNrofPageRec : 32 [Maximum number of page records]*/
611 if(pageUeLL->count > MAX_PAGING_UE_RECORDS)
613 pagingMsg->pagingRecordList->list.count = MAX_PAGING_UE_RECORDS;
616 pagingMsg->pagingRecordList->list.size = pageUeLL->count * (sizeof(PagingRecord_t *));
617 DU_ALLOC(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
618 if(pagingMsg->pagingRecordList->list.array == NULLP)
620 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (Array) Memory Alloction failed!");
623 for(recordIdx = 0; recordIdx < pageUeLL->count; recordIdx++)
625 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
626 if(pagingMsg->pagingRecordList->list.array[recordIdx] == NULLP)
628 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (Record) Memory Alloction failed!");
633 node = pageUeLL->first;
634 while(node && (recordIdx < MAX_PAGING_UE_RECORDS))
637 ueRecord = (DuPagUeRecord *)node->node;
640 /*TODO : When Connected Mode Paging will be supported then I_RNTI will be introduced*/
641 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.present = PagingUE_Identity_PR_ng_5G_S_TMSI;
642 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size = totalByteInTmsi*sizeof(uint8_t);
643 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
644 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
645 if(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf == NULLP)
647 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (5gsTmsi buffer) Memory Allocation failed!");
650 fillBitString(&pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI,\
651 unusedBitsInTmsi, totalByteInTmsi, ueRecord->sTmsi);
655 if(duDelNodeFromLList(pageUeLL, node) == ROK)
656 DU_FREE(ueRecord, sizeof(DuPagUeRecord));
659 if(node != NULLP && (recordIdx < MAX_PAGING_UE_RECORDS))
661 /*This leg is hit because Whole UE REcord List was not traversed as
662 * some issue happened thus exiting the main while*/
665 xer_fprint(stdout, &asn_DEF_PCCH_Message, pcchMsg);
666 memset(encBuf, 0, ENC_BUF_MAX_LEN);
668 /* Encode the PCCH RRC PDU as APER */
669 encRetVal = aper_encode(&asn_DEF_PCCH_Message, 0, pcchMsg, PrepFinalEncBuf,\
672 if(encRetVal.encoded == ENCODE_FAIL)
674 DU_LOG("\nERROR --> F1AP : Could not encode Paging structure (at %s)\n",\
675 encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
680 DU_LOG("\nDEBUG --> F1AP : Created APER encoded buffer for RRCPDU for PagingMsg \n");
682 DU_ALLOC_SHRABL_BUF(macPageReq, sizeof(MacPageReq));
683 if(macPageReq == NULLP)
685 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (macPageReq) Memory Alloction failed!");
690 macPageReq->i_s = i_s;
691 macPageReq->pduLen = encBufSize;
692 DU_ALLOC_SHRABL_BUF(macPageReq->pagePdu, macPageReq->pduLen);
693 if(macPageReq->pagePdu == NULLP)
695 DU_LOG("\nERROR --> DU APP: buildAndSendPagingToMac(); (PagePDU) Memory Alloction failed!");
698 memcpy(macPageReq->pagePdu, encBuf, macPageReq->pduLen);
703 freePcchPdu(pcchMsg);
707 /*******************************************************************
708 * @brief Keeping the record of Paging having a particular SFN and index associated
712 * Function : insertPagingRecord
714 * Functionality: Insert record of Paging assoc with particular SFN and index associated
716 * @params[in] DuCellCb* cellCb, uint16_t iterations
717 * DuPagingMsg rcvdF1apPagingParam
719 * @return ROK - success
722 * ****************************************************************/
723 uint8_t insertPagingRecord(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam, uint16_t iterations)
725 uint16_t maxIterations = 0;
726 DuPagInfoList *pagInfoLLFromPF = NULLP;
727 DuPagUeList *pageUeLL = NULLP;
728 DuPagUeRecord *ueRecord = NULLP;
731 printPageList(&(cellCb->pagingInfoMap));
734 /*MAX Iteration : A UE can be paged at every T frames thus MAX determines
735 *how many Paging Frame(s) can be considered for Paging this UE*/
736 maxIterations = MAX_SFN/rcvdF1apPagingParam->T;
737 if(iterations >= maxIterations)
739 DU_LOG("\nERROR --> DU APP: MAX Iterations reached for UEID:%d, thus Paging is dropped!", rcvdF1apPagingParam->pagUeId);
743 /*[Step1]: Extracting the PF from the HasMap between PF and PagingInfoList*/
744 pagInfoLLFromPF = findPagingInfoFromMap(rcvdF1apPagingParam->pagingFrame, &(cellCb->pagingInfoMap));
745 if(pagInfoLLFromPF != NULLP)
747 /*[Step2]: Extracting the PageInfo List for the Paging Indices(i_s)*/
748 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, \
749 &(pagInfoLLFromPF->pagInfoList), CREATE);
751 if(pageUeLL != NULLP)
753 /*[Step3]: Check whether MAX UE Record against this PF and i_s has reached(Spec 38.331, Annexure A)*/
754 if(pageUeLL->pagUeList.count < MAX_PAGING_UE_RECORDS)
756 /*[Step4]: Insert the Paging Record to the end of the UE record List*/
757 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi,\
758 &(pageUeLL->pagUeList), CREATE);
760 if(ueRecord == NULLP)
762 DU_LOG("\nERROR --> DU APP: Unable to create UE Record in PagingList");
765 DU_LOG("\nDEBUG --> DU APP: UE Record created successfully in PagingList");
770 /*Since MAX Page record has reached for this PF thus calculating and
771 *moving this UE to next Paging Cycle*/
772 DU_LOG("\nINFO --> DU APP: Max Page Record reached for PagingFrame:%d",rcvdF1apPagingParam->pagingFrame);
773 rcvdF1apPagingParam->pagingFrame = ((rcvdF1apPagingParam->pagingFrame + rcvdF1apPagingParam->T) % MAX_SFN);
776 return insertPagingRecord(cellCb, rcvdF1apPagingParam, iterations);
780 /*Reaching here means that PF has no entry in the PageLists,
781 *Thus creating, Updating and inseritng the Paging Map, List and UE record.*/
783 DU_ALLOC(pagInfoLLFromPF, sizeof(DuPagInfoList));
785 if(pagInfoLLFromPF == NULLP)
787 DU_LOG("\nERROR --> DU APP: PageInfo Map allocation failed.");
790 pagInfoLLFromPF->pf = rcvdF1apPagingParam->pagingFrame;
791 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, &(pagInfoLLFromPF->pagInfoList), CREATE);
792 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi, &(pageUeLL->pagUeList), CREATE);
793 if(cmHashListInsert(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF, (uint8_t *)&(pagInfoLLFromPF->pf), sizeof(uint16_t)) == RFAILED)
795 DU_LOG("\nERROR --> DU APP: Hash Map Insertion Failed for PF:%d.",rcvdF1apPagingParam->pagingFrame);
799 printPageList(&(cellCb->pagingInfoMap));
807 /*******************************************************************
808 * @brief Calculate and fill paging information of a UE belongs to a particular cell
812 * Function : calcAndFillPagingInfoInCellCb
814 * Functionality: Calculate PO and i_s and
815 * fill paging information of a UE in DuCellCb
817 * @params[in] DuCellCb* cellCb, uint8_t pagUeId,
818 * DuPagingMsg rcvdF1apPagingParam
820 * @return ROK - success
823 * ****************************************************************/
824 uint8_t calcAndFillPagingInfoInCellCb(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam)
827 uint16_t T=0, N=0, pagingFrame = 0, n = 0;
828 uint16_t currentSfn = 0, sfn = 0, newSfn = 0;
833 /* calculate paging frame and paging offset */
834 duPcchCfg = duCfgParam.sib1Params.srvCellCfgCommSib.dlCfg.pcchCfg;
835 rcvdF1apPagingParam->pagingFrameOffset = duPcchCfg.pageFrameOffset;
839 * Fill the Value of T (DRX cycle of the UE)
840 * T = min(UE Specific DRX value allocated by upper layers, default DRX
841 * broadcast in System Information) */
842 if((rcvdF1apPagingParam->pagingDrxPres) && (duPcchCfg.dfltPagingCycle > rcvdF1apPagingParam->pagingDrx))
844 T = rcvdF1apPagingParam->pagingDrx;
848 T = duPcchCfg.dfltPagingCycle;
850 rcvdF1apPagingParam->T = T;
852 /* N= number of total paging frames in T */
854 switch(duPcchCfg.nAndPagingFrmOffsetType)
856 case PCCH_Config__nAndPagingFrameOffset_PR_oneT:
859 case PCCH_Config__nAndPagingFrameOffset_PR_halfT:
862 case PCCH_Config__nAndPagingFrameOffset_PR_quarterT:
865 case PCCH_Config__nAndPagingFrameOffset_PR_oneEighthT:
868 case PCCH_Config__nAndPagingFrameOffset_PR_oneSixteenthT:
876 /* calculate the Value of pagingFrame */
877 /*Refer: 38.304 Sec 7.1: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N)*/
878 //RHS of above formula
879 pagingFrame = (T / N) * ((rcvdF1apPagingParam->pagUeId) % N);
881 //LHS of above formula
884 pagingFrame = (pagingFrame - rcvdF1apPagingParam->pagingFrameOffset)%T;
886 else /*Paging Frame = 0 so thus PF will be calculated on Paging Cycle*/
888 pagingFrame = (T - rcvdF1apPagingParam->pagingFrameOffset)%T;
891 /*Paging Frame(SFN for Paging) has to be determined from current SFN. */
892 /*For eg: If T =128, PF(Calculated above) = 20; SFN can be 20,148,276,...
893 * If currSFN is running as 200 then (newSFN % T) == (T/N)*(UE_ID%N)
894 *Thus SFN at which paging has to be sent needs to be delayed and newSFN = 276*/
896 currentSfn = cellCb->currSlotInfo.sfn;
898 /*Multiplication Factor(x) to find the next best SFN to process paging*/
900 /*Below calculation will determine in which nth cycle of T (DRX cycle),new PF
901 * may fall(Delayed one)*/
902 if(currentSfn > pagingFrame)
904 n = ((currentSfn - pagingFrame) / T) + 1;
908 n = ((pagingFrame - currentSfn) / T) + 1;
911 newSfn = pagingFrame + T * n;
913 /*When pagingFrame is future from currSFN then pagingFrame will be used
914 * else pagingFrame is delayed thus newSFN will be used.*/
915 if(currentSfn <= pagingFrame)
917 if(pagingFrame > currentSfn + PAGING_SCHED_DELTA)
929 if(newSfn > currentSfn + PAGING_SCHED_DELTA)
933 else /*If newSFN is near to currSFN then delay it more by T*/
939 rcvdF1apPagingParam->pagingFrame = (sfn % MAX_SFN);
940 rcvdF1apPagingParam->i_s = ((uint32_t)(floor(rcvdF1apPagingParam->pagUeId / N)) % ns);
942 DU_LOG("\nINFO --> DU APP : Successfully filled paging parameter in DuCellCb");
943 memcpy(&cellCb->tmpPagingInfoOfUe, rcvdF1apPagingParam, sizeof(DuPagingMsg));
947 DU_LOG("\nINFO --> DU APP : calcAndFillPagingInfoInCellCb(): Received null pointer");
953 /*******************************************************************
954 * @brief Paging Processing on a particular cell
958 * Function : processPagingMsg
960 * Functionality: Process Paging on a particular cell
962 * @params[in] uint16_t cellId
963 * DuPagingMsg rcvdF1apPagingParam
965 * @return ROK - success
968 * ****************************************************************/
969 uint8_t processPagingMsg(uint16_t cellId, DuPagingMsg *rcvdF1apPagingParam)
971 uint16_t cellIdx = 0, iteration = 0;
973 GET_CELL_IDX(cellId, cellIdx);
975 if(duCb.actvCellLst[cellIdx] == NULLP || duCb.actvCellLst[cellIdx]->cellId != cellId)
977 DU_LOG("\nERROR --> DU APP : processPagingMsg(): CellId[%d] is not found", cellId);
981 if(calcAndFillPagingInfoInCellCb(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam) != ROK)
983 DU_LOG("\nERROR --> DU APP : CellCb:%d not present to fill UE Paging Information",cellId);
986 if(insertPagingRecord(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam, iteration) != ROK)
988 DU_LOG("\nERROR --> DU APP : Insertion Failed ofUE Paging Information");
994 /**********************************************************************
996 **********************************************************************/