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 DuMacDlBroadcastReq packMacDlBroadcastReqOpts[] =
65 packDuMacDlBroadcastReq, /* Loose coupling */
66 MacProcDlBroadcastReq, /* TIght coupling */
67 packDuMacDlBroadcastReq /* Light weight-loose coupling */
69 /*******************************************************************
71 * @brief Processes cells to be activated
75 * Function : duProcCellsToBeActivated
78 * - Processes cells to be activated list received in F1SetupRsp
81 * @return ROK - success
84 * ****************************************************************/
85 uint8_t duProcCellsToBeActivated(uint8_t *plmnStr, uint16_t nci, uint16_t nRPci)
88 DuCellCb *cellCb = NULLP;
89 uint8_t cfgIdx, tmpPlmn[4];
91 for(cfgIdx=0; cfgIdx<duCb.numCfgCells; cfgIdx++)
93 memset(tmpPlmn, 0, 4);
94 buildPlmnId(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.plmn, tmpPlmn);
95 if(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.cellId == nci &&
96 (strcmp((const char*)tmpPlmn, (const char*)plmnStr) == 0))
98 cellCb = duCb.cfgCellLst[cfgIdx];
103 DU_LOG("\nERROR --> DU APP : No Cell found for NCI %d", nci);
108 cellCb->cellStatus = ACTIVATION_IN_PROGRESS;
109 cellCb->cellInfo.nrPci = nRPci;
111 if((cmHashListInit(&(cellCb->pagingInfoMap), MAX_SFN, sizeof(DuPagInfoList),\
112 FALSE, CM_HASH_KEYTYPE_CONID, DU_APP_MEM_REGION, DU_POOL)) != ROK)
114 DU_LOG("ERROR --> DU APP: Failed to Initialize the Paging Hash Map");
117 duCb.actvCellLst[cellCb->cellId -1] = cellCb;
120 if(duBuildAndSendMacCellCfg(cellCb->cellId) != ROK)
122 DU_LOG("\nERROR --> DU APP : macCellCfg build and send failed");
123 /* Delete cell from actvCellList */
124 duCb.actvCellLst[cellCb->cellId -1] = NULLP;
125 --(duCb.numActvCells);
131 /*******************************************************************
133 * @brief Handles DU F1Setup Rsp received in F1AP
137 * Function : duProcF1SetupRsp
140 * - Handles DU F1Setup Rsp received in F1AP
142 * @params[in] Pointer to F1SetupRsp
145 ******************************************************************/
146 void duProcF1SetupRsp()
148 DU_LOG("\nINFO --> DU_APP : F1 Setup Response received");
149 duCb.f1Status = TRUE; //Set F1 status as true
152 /*******************************************************************
154 * @brief Returns cellCb based on cell ID
158 * Function : duGetCellCb
160 * Functionality: Returns DU APP CellCb based on cell ID
162 * @params[in] F1AP_PDU_t ASN decoded F1AP message
163 * @return ROK - success
166 * ****************************************************************/
167 uint8_t duGetCellCb(uint16_t cellId, DuCellCb **cellCb)
171 for(cellIdx=0; cellIdx < MAX_NUM_CELL; cellIdx++)
173 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == cellId))
175 *cellCb = duCb.actvCellLst[cellIdx];
182 DU_LOG("\nERROR --> DU APP : Cell Id %d not found in DU APP", cellId);
189 /******************************************************************************
190 * @brief Check Paging Record for a Particular Paging Frame
194 * Function : checkPagingRecord
197 * Check Paging Record for a Particular Paging Frame
199 * @params[in] DuCellCb *cellCb
201 * @return ROK/RFAILURE (uint8_t return)
204 ******************************************************************************/
205 uint8_t checkPagingRecord(DuCellCb *cellCb)
208 DuPagInfoList *pagInfoLLFromPF = NULLP;
209 DuPagUeList *pagInfo = NULLP;
211 /*DUAPP may send PagingReq to MAC for future SFN so that Schedular can
212 * schedule Paging on the exact occurence of the Slot.*/
213 pf = (cellCb->currSlotInfo.sfn + PAGING_SCHED_DELTA) % MAX_SFN;
215 pagInfoLLFromPF = findPagingInfoFromMap(pf, &(cellCb->pagingInfoMap));
216 if(pagInfoLLFromPF == NULLP)
218 /*No Page is present for pf thus exiting*/
224 pagInfo = handlePageInfoLL(pf, NULLD, &(pagInfoLLFromPF->pagInfoList), TRAVERSE_ALL);
227 if(BuildAndSendDlPcchIndToMac(cellCb->cellId, pf, pagInfo->i_s, &(pagInfo->pagUeList)) != ROK)
229 DU_LOG("\nERROR --> DU APP: Issue in Building Page RRC PDU i_s:%d",pagInfo->i_s);
232 handlePageInfoLL(pf, pagInfo->i_s, &(pagInfoLLFromPF->pagInfoList), DELETE);
234 if(pagInfoLLFromPF->pagInfoList.first == NULLP)
238 }while(pagInfo != NULLP);
240 cmHashListDelete(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF);
241 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
245 /******************************************************************
247 * @brief Send pcch indication to MAC
251 * Function : sendDlPcchIndToMac
253 * Functionality: Send pcch indication to MAC
255 * @Params[in] DlPcchInd *pcchInd
256 * @return ROK - success
259 * ****************************************************************/
261 uint8_t sendDlPcchIndToMac(DlPcchInd *pcchInd)
269 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_PCCH_IND);
271 ret = (*packMacDlPcchIndOpts[pst.selector])(&pst, pcchInd);
274 DU_LOG("\nERROR --> DU APP : sendDlPcchIndToMac(): Failed to DL PCCH indication to MAC");
279 DU_LOG("\nERROR --> DU APP: sendDlPcchIndToMac(): Received pcchInd is NULLP");
286 /*****************************************************************
287 * @brief Handles slot indication from MAC
291 * Function : duHandleSlotInd
294 * Handles slot indication from MAC
296 * @params[in] Post structure pointer
297 * SlotTimingInfo *slotIndInfo
298 * @return ROK - success
302 *****************************************************************/
303 uint8_t duHandleSlotInd(Pst *pst, SlotTimingInfo *slotIndInfo)
305 uint8_t cellIdx = 0, ret = ROK;
306 DuCellCb *duCellCb = NULLP;
310 GET_CELL_IDX(slotIndInfo->cellId, cellIdx);
311 duCellCb = duCb.actvCellLst[cellIdx];
315 duCellCb->currSlotInfo.sfn = slotIndInfo->sfn;
316 duCellCb->currSlotInfo.slot = slotIndInfo->slot;
317 checkPagingRecord(duCellCb);
321 DU_LOG("\nERROR --> DU APP : CellId[%d] doesnot exist", slotIndInfo->cellId);
324 DU_FREE_SHRABL_BUF(pst->region, pst->pool, slotIndInfo, sizeof(SlotTimingInfo));
328 DU_LOG("\nERROR --> DU APP : Recevied null pointer from MAC");
333 /*******************************************************************
335 * @brief Handles cell up indication from MAC
339 * Function : duHandleCellUpInd
342 * Handles cell up indication from MAC
344 * @params[in] Post structure pointer
346 * @return ROK - success
349 * ****************************************************************/
350 uint8_t duHandleCellUpInd(Pst *pst, OduCellId *cellId)
352 DuCellCb *cellCb = NULLP;
354 if(cellId->cellId <=0 || cellId->cellId > MAX_NUM_CELL)
356 DU_LOG("\nERROR --> DU APP : Invalid Cell Id %d in duHandleCellUpInd()", cellId->cellId);
360 if(duGetCellCb(cellId->cellId, &cellCb) != ROK)
363 if((cellCb != NULL) && (cellCb->cellStatus == ACTIVATION_IN_PROGRESS))
365 DU_LOG("\nINFO --> DU APP : 5G-NR Cell %d is UP", cellId->cellId);
366 cellCb->cellStatus = ACTIVATED;
367 gCellStatus = CELL_UP;
369 if(duCfgParam.tempSliceCfg.numOfRrmPolicy)
370 BuildAndSendSliceConfigReq();
372 DU_LOG("\nINFO --> DU APP : Raise cell UP alarm for cell id=%d", cellId->cellId);
373 raiseCellAlrm(CELL_UP_ALARM_ID, cellId->cellId);
374 setCellOpState(cellId->cellId, ENABLED, ACTIVE);
376 duCfgParam.macCellCfg.cellCfg.opState = OP_ENABLED;
377 duCfgParam.macCellCfg.cellCfg.cellState = CELL_ACTIVE;
380 if((pst->selector == ODU_SELECTOR_LWLC) || (pst->selector == ODU_SELECTOR_TC))
381 DU_FREE_SHRABL_BUF(pst->region, pst->pool, cellId, sizeof(OduCellId));
385 /*******************************************************************
387 * @brief Handle Cell delete response from MAC
391 * Function : DuProcMacCellDeleteRsp
393 * Functionality: Handle Cell delete response from MAC
395 * @params[in] Pointer to MacCellDeleteRsp and Pst
396 * @return ROK - success
399 * ****************************************************************/
401 uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
404 uint16_t cellIdx=0, pfIdx=0;
405 DuPagInfoList *pagInfoLLFromPF=NULLP;
409 if(deleteRsp->status == SUCCESSFUL)
411 GET_CELL_IDX(deleteRsp->cellId, cellIdx);
412 DU_LOG("\nINFO --> DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
413 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId))
415 for(pfIdx =0; pfIdx < MAX_SFN; pfIdx++)
417 pagInfoLLFromPF = findPagingInfoFromMap(pfIdx, &(duCb.actvCellLst[cellIdx]->pagingInfoMap));
420 cmHashListDelete(&(duCb.actvCellLst[cellIdx]->pagingInfoMap), (PTR)pagInfoLLFromPF);
421 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
425 memset(duCb.actvCellLst[cellIdx], 0, sizeof(DuCellCb));
426 gCellStatus = CELL_DOWN;
429 DU_LOG("\nINFO --> DU APP : Raise cell down alarm for cell id=%d", deleteRsp->cellId);
430 raiseCellAlrm(CELL_DOWN_ALARM_ID, deleteRsp->cellId);
431 setCellOpState(deleteRsp->cellId, DISABLED, INACTIVE);
436 DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
441 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
447 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
448 [CELL IDX : %d]", deleteRsp->cellId);
451 DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacCellDeleteRsp));
455 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
461 /*******************************************************************
463 * @brief Sending Cell Delete Req To Mac
467 * Function : sendCellDeleteReqToMac
470 * sending Cell Delete Req To Mac
472 * @params[in] uint16_t cellId
473 * @return ROK - success
477 *****************************************************************/
479 uint8_t sendCellDeleteReqToMac(uint16_t cellId)
483 MacCellDeleteReq *cellDelete = NULLP;
485 DU_ALLOC_SHRABL_BUF(cellDelete, sizeof(MacCellDeleteReq));
488 cellDelete->cellId = cellId;
489 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
491 DU_LOG("\nINFO --> DU APP : Sending Cell Delete Request to MAC");
492 /* Processing one Cell at a time to MAC */
493 ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
496 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
497 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDeleteReq));
502 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to allocate memory");
508 /*******************************************************************
510 * @brief DU preocess Cell Delete Req to MAC
514 * Function : duSendCellDeletReq
516 * Functionality: DU process Cell Delete Req to MAC
518 * @params[in] uint16_t cellId
519 * @return ROK - success
522 * ****************************************************************/
524 uint8_t duSendCellDeletReq(uint16_t cellId)
526 uint16_t cellIdx = 0;
527 DU_LOG("\nINFO --> DU APP : Processing Cell Delete Request ");
528 GET_CELL_IDX(cellId, cellIdx);
530 if(duCb.actvCellLst[cellIdx] == NULLP)
532 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
536 if(duCb.actvCellLst[cellIdx]->cellId != cellId)
538 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
543 if(duCb.actvCellLst[cellIdx]->cellStatus != DELETION_IN_PROGRESS)
545 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellStatus[%d] of cellId[%d] is not correct.\
546 Expected CellStatus is DELETION_IN_PROGRESS",duCb.actvCellLst[cellIdx]->cellStatus, cellId);
550 if(duBuildAndSendMacCellStop(cellId) == RFAILED)
552 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): Failed to build and send cell stop request to MAC for\
560 /*******************************************************************
561 * @brief Free PCCH PDU structure
565 * Function : freePcchPdu
567 * Functionality: Free PCCH PDU structure
569 * @params[in] PCCH_Message_t *pcchMsg
573 * ****************************************************************/
574 void freePcchPdu(PCCH_Message_t *pcchMsg)
576 PagingRrc_t *pagingMsg = NULLP;
577 uint8_t recordIdx = 0;
581 if(pcchMsg->message.choice.c1 != NULLP)
583 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
584 if(pagingMsg != NULLP)
586 if(pagingMsg->pagingRecordList)
588 if(pagingMsg->pagingRecordList->list.array != NULLP)
590 for(recordIdx = 0; recordIdx < pagingMsg->pagingRecordList->list.count; recordIdx++)
592 if(pagingMsg->pagingRecordList->list.array[recordIdx] != NULLP)
594 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
595 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
596 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
599 DU_FREE(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
601 DU_FREE(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
603 DU_FREE(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
605 DU_FREE(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
607 DU_FREE(pcchMsg , sizeof(PCCH_Message_t));
611 /*******************************************************************
612 * @brief Builds the Pcch RRC PDU and forwards it to MAC
616 * Function : BuildAndSendDlPcchIndToMac
618 * Functionality: Builds the Pcch RRC PDU[As per Spec 38.331, Annexure A]
619 * and forwards it to MAC as Buffer along with PF and i_s
621 * @params[in] uint16_t cellId, uint16_t pf, uint8_t i_s,CmLListCp *pageUeLL
623 * @return ROK - success
626 * ****************************************************************/
627 uint8_t BuildAndSendDlPcchIndToMac(uint16_t cellId, uint16_t pf, uint8_t i_s, CmLListCp *pageUeLL)
629 CmLList *node = NULLP, *next = NULLP;
630 DuPagUeRecord *ueRecord = NULLP;
631 PCCH_Message_t *pcchMsg = NULLP;
632 asn_enc_rval_t encRetVal;
633 PagingRrc_t *pagingMsg = NULLP;
634 DlPcchInd *macPcchInd = NULLP;
635 uint8_t recordIdx = 0, ret = RFAILED;
637 /*As per 38.473 Sec 9.3.1.39,5G-S-TMSI :48 Bits >> Bytes and 0 UnusedBits */
638 uint8_t totalByteInTmsi = 6, unusedBitsInTmsi = 0;
640 if(pageUeLL == NULLP || pageUeLL->count == 0)
642 DU_LOG("\nERROR --> DU APP: UE Page Record LL is empty");
648 memset(&encRetVal, 0, sizeof(asn_enc_rval_t));
649 DU_ALLOC(pcchMsg , sizeof(PCCH_Message_t));
652 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(): (pccchMsg) Memory Alloction failed!");
655 pcchMsg->message.present = PCCH_MessageType_PR_c1;
656 DU_ALLOC(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
657 if(pcchMsg->message.choice.c1 == NULLP)
659 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (C1) Memory Alloction failed!");
662 pcchMsg->message.choice.c1->present = PCCH_MessageType__c1_PR_paging;
663 DU_ALLOC(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
665 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
666 if(pagingMsg == NULLP)
668 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging) Memory Alloction failed!");
671 DU_ALLOC(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
672 if(pagingMsg->pagingRecordList == NULLP)
674 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging Record List) Memory Alloction failed!");
678 pagingMsg->pagingRecordList->list.count = pageUeLL->count;
680 /*As per Spec 38.331, maxNrofPageRec : 32 [Maximum number of page records]*/
681 if(pageUeLL->count > MAX_PAGING_UE_RECORDS)
683 pagingMsg->pagingRecordList->list.count = MAX_PAGING_UE_RECORDS;
686 pagingMsg->pagingRecordList->list.size = pageUeLL->count * (sizeof(PagingRecord_t *));
687 DU_ALLOC(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
688 if(pagingMsg->pagingRecordList->list.array == NULLP)
690 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Array) Memory Alloction failed!");
693 for(recordIdx = 0; recordIdx < pageUeLL->count; recordIdx++)
695 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
696 if(pagingMsg->pagingRecordList->list.array[recordIdx] == NULLP)
698 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Record) Memory Alloction failed!");
703 node = pageUeLL->first;
704 while(node && (recordIdx < MAX_PAGING_UE_RECORDS))
707 ueRecord = (DuPagUeRecord *)node->node;
710 /*TODO : When Connected Mode Paging will be supported then I_RNTI will be introduced*/
711 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.present = PagingUE_Identity_PR_ng_5G_S_TMSI;
712 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size = totalByteInTmsi*sizeof(uint8_t);
713 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
714 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
715 if(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf == NULLP)
717 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (5gsTmsi buffer) Memory Allocation failed!");
720 fillBitString(&pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI,\
721 unusedBitsInTmsi, totalByteInTmsi, ueRecord->sTmsi);
725 if(duDelNodeFromLList(pageUeLL, node) == ROK)
726 DU_FREE(ueRecord, sizeof(DuPagUeRecord));
729 if(node != NULLP && (recordIdx < MAX_PAGING_UE_RECORDS))
731 /*This leg is hit because Whole UE REcord List was not traversed as
732 * some issue happened thus exiting the main while*/
735 xer_fprint(stdout, &asn_DEF_PCCH_Message, pcchMsg);
736 memset(encBuf, 0, ENC_BUF_MAX_LEN);
738 /* Encode the PCCH RRC PDU as APER */
739 encRetVal = uper_encode(&asn_DEF_PCCH_Message, 0, pcchMsg, PrepFinalEncBuf,\
742 if(encRetVal.encoded == ENCODE_FAIL)
744 DU_LOG("\nERROR --> F1AP : Could not encode Paging structure (at %s)\n",\
745 encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
750 DU_LOG("\nDEBUG --> F1AP : Created APER encoded buffer for RRC PDU for Pcch indication \n");
752 DU_ALLOC_SHRABL_BUF(macPcchInd, sizeof(DlPcchInd));
753 if(macPcchInd == NULLP)
755 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (macPcchInd) Memory Alloction failed!");
759 macPcchInd->cellId = cellId;
761 macPcchInd->i_s = i_s;
762 macPcchInd->pduLen = encBufSize;
763 DU_ALLOC_SHRABL_BUF(macPcchInd->pcchPdu, macPcchInd->pduLen);
764 if(macPcchInd->pcchPdu == NULLP)
766 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (PcchPDU) Memory Alloction failed!");
769 memcpy(macPcchInd->pcchPdu, encBuf, macPcchInd->pduLen);
770 ret = sendDlPcchIndToMac(macPcchInd);
773 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd->pcchPdu, macPcchInd->pduLen);
774 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd, sizeof(DlPcchInd));
781 freePcchPdu(pcchMsg);
785 /*******************************************************************
786 * @brief Keeping the record of Paging having a particular SFN and index associated
790 * Function : insertPagingRecord
792 * Functionality: Insert record of Paging assoc with particular SFN and index associated
794 * @params[in] DuCellCb* cellCb, uint16_t iterations
795 * DuPagingMsg rcvdF1apPagingParam
797 * @return ROK - success
800 * ****************************************************************/
801 uint8_t insertPagingRecord(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam, uint16_t iterations)
803 uint16_t maxIterations = 0;
804 DuPagInfoList *pagInfoLLFromPF = NULLP;
805 DuPagUeList *pageUeLL = NULLP;
806 DuPagUeRecord *ueRecord = NULLP;
809 printPageList(&(cellCb->pagingInfoMap));
812 /*MAX Iteration : A UE can be paged at every T frames thus MAX determines
813 *how many Paging Frame(s) can be considered for Paging this UE*/
814 maxIterations = MAX_SFN/rcvdF1apPagingParam->T;
815 if(iterations >= maxIterations)
817 DU_LOG("\nERROR --> DU APP: MAX Iterations reached for UEID:%d, thus Paging is dropped!", rcvdF1apPagingParam->pagUeId);
821 /*[Step1]: Extracting the PF from the HasMap between PF and PagingInfoList*/
822 pagInfoLLFromPF = findPagingInfoFromMap(rcvdF1apPagingParam->pagingFrame, &(cellCb->pagingInfoMap));
823 if(pagInfoLLFromPF != NULLP)
825 /*[Step2]: Extracting the PageInfo List for the Paging Indices(i_s)*/
826 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, \
827 &(pagInfoLLFromPF->pagInfoList), CREATE);
829 if(pageUeLL != NULLP)
831 /*[Step3]: Check whether MAX UE Record against this PF and i_s has reached(Spec 38.331, Annexure A)*/
832 if(pageUeLL->pagUeList.count < MAX_PAGING_UE_RECORDS)
834 /*[Step4]: Insert the Paging Record to the end of the UE record List*/
835 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi,\
836 &(pageUeLL->pagUeList), CREATE);
838 if(ueRecord == NULLP)
840 DU_LOG("\nERROR --> DU APP: Unable to create UE Record in PagingList");
843 DU_LOG("\nDEBUG --> DU APP: UE Record created successfully in PagingList");
848 /*Since MAX Page record has reached for this PF thus calculating and
849 *moving this UE to next Paging Cycle*/
850 DU_LOG("\nINFO --> DU APP: Max Page Record reached for PagingFrame:%d",rcvdF1apPagingParam->pagingFrame);
851 rcvdF1apPagingParam->pagingFrame = ((rcvdF1apPagingParam->pagingFrame + rcvdF1apPagingParam->T) % MAX_SFN);
854 return insertPagingRecord(cellCb, rcvdF1apPagingParam, iterations);
858 /*Reaching here means that PF has no entry in the PageLists,
859 *Thus creating, Updating and inseritng the Paging Map, List and UE record.*/
861 DU_ALLOC(pagInfoLLFromPF, sizeof(DuPagInfoList));
863 if(pagInfoLLFromPF == NULLP)
865 DU_LOG("\nERROR --> DU APP: PageInfo Map allocation failed.");
868 pagInfoLLFromPF->pf = rcvdF1apPagingParam->pagingFrame;
869 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, &(pagInfoLLFromPF->pagInfoList), CREATE);
870 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi, &(pageUeLL->pagUeList), CREATE);
871 if(cmHashListInsert(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF, (uint8_t *)&(pagInfoLLFromPF->pf), sizeof(uint16_t)) == RFAILED)
873 DU_LOG("\nERROR --> DU APP: Hash Map Insertion Failed for PF:%d.",rcvdF1apPagingParam->pagingFrame);
877 printPageList(&(cellCb->pagingInfoMap));
885 /*******************************************************************
886 * @brief Calculate and fill paging information of a UE belongs to a particular cell
890 * Function : calcAndFillPagingInfoInCellCb
892 * Functionality: Calculate PO and i_s and
893 * fill paging information of a UE in DuCellCb
895 * @params[in] DuCellCb* cellCb, uint8_t pagUeId,
896 * DuPagingMsg rcvdF1apPagingParam
898 * @return ROK - success
901 * ****************************************************************/
902 uint8_t calcAndFillPagingInfoInCellCb(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam)
905 uint16_t T=0, N=0, pagingFrame = 0, n = 0;
906 uint16_t currentSfn = 0, sfn = 0, newSfn = 0;
911 /* calculate paging frame and paging offset */
912 duPcchCfg = duCfgParam.sib1Params.srvCellCfgCommSib.dlCfg.pcchCfg;
913 rcvdF1apPagingParam->pagingFrameOffset = duPcchCfg.pageFrameOffset;
917 * Fill the Value of T (DRX cycle of the UE)
918 * T = min(UE Specific DRX value allocated by upper layers, default DRX
919 * broadcast in System Information) */
920 if((rcvdF1apPagingParam->pagingDrxPres) && (duPcchCfg.dfltPagingCycle > rcvdF1apPagingParam->pagingDrx))
922 T = rcvdF1apPagingParam->pagingDrx;
926 T = duPcchCfg.dfltPagingCycle;
928 rcvdF1apPagingParam->T = T;
930 /* N= number of total paging frames in T */
932 switch(duPcchCfg.nAndPagingFrmOffsetType)
934 case PCCH_Config__nAndPagingFrameOffset_PR_oneT:
937 case PCCH_Config__nAndPagingFrameOffset_PR_halfT:
940 case PCCH_Config__nAndPagingFrameOffset_PR_quarterT:
943 case PCCH_Config__nAndPagingFrameOffset_PR_oneEighthT:
946 case PCCH_Config__nAndPagingFrameOffset_PR_oneSixteenthT:
954 /* calculate the Value of pagingFrame */
955 /*Refer: 38.304 Sec 7.1: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N)*/
956 //RHS of above formula
957 pagingFrame = (T / N) * ((rcvdF1apPagingParam->pagUeId) % N);
959 //LHS of above formula
962 pagingFrame = (pagingFrame - rcvdF1apPagingParam->pagingFrameOffset)%T;
964 else /*Paging Frame = 0 so thus PF will be calculated on Paging Cycle*/
966 pagingFrame = (T - rcvdF1apPagingParam->pagingFrameOffset)%T;
969 /*Paging Frame(SFN for Paging) has to be determined from current SFN. */
970 /*For eg: If T =128, PF(Calculated above) = 20; SFN can be 20,148,276,...
971 * If currSFN is running as 200 then (newSFN % T) == (T/N)*(UE_ID%N)
972 *Thus SFN at which paging has to be sent needs to be delayed and newSFN = 276*/
974 currentSfn = cellCb->currSlotInfo.sfn;
976 /*Multiplication Factor(x) to find the next best SFN to process paging*/
978 /*Below calculation will determine in which nth cycle of T (DRX cycle),new PF
979 * may fall(Delayed one)*/
980 if(currentSfn > pagingFrame)
982 n = ((currentSfn - pagingFrame) / T) + 1;
986 n = ((pagingFrame - currentSfn) / T) + 1;
989 newSfn = pagingFrame + T * n;
991 /*When pagingFrame is future from currSFN then pagingFrame will be used
992 * else pagingFrame is delayed thus newSFN will be used.*/
993 if(currentSfn <= pagingFrame)
995 if(pagingFrame > currentSfn + PAGING_SCHED_DELTA)
1007 if(newSfn > currentSfn + PAGING_SCHED_DELTA)
1011 else /*If newSFN is near to currSFN then delay it more by T*/
1013 newSfn = newSfn + T;
1017 rcvdF1apPagingParam->pagingFrame = (sfn % MAX_SFN);
1018 rcvdF1apPagingParam->i_s = ((uint32_t)(floor(rcvdF1apPagingParam->pagUeId / N)) % ns);
1020 memcpy(&cellCb->tmpPagingInfoOfUe, rcvdF1apPagingParam, sizeof(DuPagingMsg));
1024 DU_LOG("\nINFO --> DU APP : calcAndFillPagingInfoInCellCb(): Received null pointer");
1030 /*******************************************************************
1031 * @brief Paging Processing on a particular cell
1035 * Function : processPagingMsg
1037 * Functionality: Process Paging on a particular cell
1039 * @params[in] uint16_t cellId
1040 * DuPagingMsg rcvdF1apPagingParam
1042 * @return ROK - success
1045 * ****************************************************************/
1046 uint8_t processPagingMsg(uint16_t cellId, DuPagingMsg *rcvdF1apPagingParam)
1048 uint16_t cellIdx = 0, iteration = 0;
1050 GET_CELL_IDX(cellId, cellIdx);
1052 if(duCb.actvCellLst[cellIdx] == NULLP || duCb.actvCellLst[cellIdx]->cellId != cellId)
1054 DU_LOG("\nERROR --> DU APP : processPagingMsg(): CellId[%d] is not found", cellId);
1058 if(calcAndFillPagingInfoInCellCb(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam) != ROK)
1060 DU_LOG("\nERROR --> DU APP : CellCb:%d not present to fill UE Paging Information",cellId);
1063 if(insertPagingRecord(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam, iteration) != ROK)
1065 DU_LOG("\nERROR --> DU APP : Insertion Failed ofUE Paging Information");
1072 /*******************************************************************
1074 * @brief DU build and send dl broacast req and send it to MAC
1078 * Function : duBuildAndSendDlBroadcastReq
1080 * Functionality: DU build and send dl broacast req and send to MAC
1083 * @params[in] cellId, crnti
1084 * @return ROK - success
1087 * ****************************************************************/
1089 uint8_t duBuildAndSendDlBroadcastReq()
1093 MacDlBroadcastReq *dlBroadcast=NULLP;
1095 DU_LOG("\nDEBUG --> DU_APP : Building Dl broadcast request");
1097 DU_ALLOC_SHRABL_BUF(dlBroadcast, sizeof(MacDlBroadcastReq));
1100 /*TODO - fill MAC DL Broadcast Request*/
1102 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_BROADCAST_REQ);
1104 DU_LOG("\nDEBUG --> DU_APP: Sending Dl broadcast Request to MAC ");
1105 ret = (*packMacDlBroadcastReqOpts[pst.selector])(&pst, dlBroadcast);
1108 DU_LOG("\nERROR --> DU_APP: sendDlBroadcastReqToMac(): Failed to send Dl broadcast Req to MAC");
1109 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, dlBroadcast, sizeof(MacDlBroadcastReq));
1114 DU_LOG("\nERROR --> DU_APP: sendDlBroadcastReqToMac(): Failed to allocate memory");
1121 /**********************************************************************
1123 **********************************************************************/