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"
29 #include "du_e2ap_mgr.h"
33 #include "du_cell_mgr.h"
34 #include "PCCH-Config.h"
35 #include "PagingUE-Identity.h"
36 #include "PagingRecord.h"
37 #include "PagingRecordList.h"
38 #include "PagingRrc.h"
39 #include "PCCH-MessageType.h"
40 #include "PCCH-Message.h"
41 #include "odu_common_codec.h"
45 #include "AlarmInterface.h"
46 #include "CmInterface.h"
50 DuMacCellDeleteReq packMacCellDeleteReqOpts[] =
52 packDuMacCellDeleteReq, /* Loose coupling */
53 MacProcCellDeleteReq, /* TIght coupling */
54 packDuMacCellDeleteReq /* Light weight-loose coupling */
57 DuMacDlPcchInd packMacDlPcchIndOpts[] =
59 packDuMacDlPcchInd, /* Loose coupling */
60 MacProcDlPcchInd, /* TIght coupling */
61 packDuMacDlPcchInd /* Light weight-loose coupling */
64 DuMacDlBroadcastReq packMacDlBroadcastReqOpts[] =
66 packDuMacDlBroadcastReq, /* Loose coupling */
67 MacProcDlBroadcastReq, /* TIght coupling */
68 packDuMacDlBroadcastReq /* Light weight-loose coupling */
70 /*******************************************************************
72 * @brief Processes cells to be activated
76 * Function : duProcCellsToBeActivated
79 * - Processes cells to be activated list received in F1SetupRsp
82 * @return ROK - success
85 * ****************************************************************/
86 uint8_t duProcCellsToBeActivated(uint8_t *plmnStr, uint16_t nci, uint16_t nRPci)
89 DuCellCb *cellCb = NULLP;
90 uint8_t cfgIdx, tmpPlmn[4];
92 for(cfgIdx=0; cfgIdx<duCb.numCfgCells; cfgIdx++)
94 memset(tmpPlmn, 0, 4);
95 buildPlmnId(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.plmn, tmpPlmn);
96 if(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.cellId == nci &&
97 (strcmp((const char*)tmpPlmn, (const char*)plmnStr) == 0))
99 cellCb = duCb.cfgCellLst[cfgIdx];
104 DU_LOG("\nERROR --> DU APP : No Cell found for NCI %d", nci);
109 cellCb->cellStatus = ACTIVATION_IN_PROGRESS;
110 cellCb->cellInfo.nrPci = nRPci;
112 if((cmHashListInit(&(cellCb->pagingInfoMap), MAX_SFN, sizeof(DuPagInfoList),\
113 FALSE, CM_HASH_KEYTYPE_CONID, DU_APP_MEM_REGION, DU_POOL)) != ROK)
115 DU_LOG("ERROR --> DU APP: Failed to Initialize the Paging Hash Map");
118 duCb.actvCellLst[cellCb->cellId -1] = cellCb;
121 if(duBuildAndSendMacCellCfg(cellCb->cellId) != ROK)
123 DU_LOG("\nERROR --> DU APP : macCellCfg build and send failed");
124 /* Delete cell from actvCellList */
125 duCb.actvCellLst[cellCb->cellId -1] = NULLP;
126 --(duCb.numActvCells);
132 /*******************************************************************
134 * @brief Handles DU F1Setup Rsp received in F1AP
138 * Function : duProcF1SetupRsp
141 * - Handles DU F1Setup Rsp received in F1AP
143 * @params[in] Pointer to F1SetupRsp
146 ******************************************************************/
147 void duProcF1SetupRsp()
149 DU_LOG("\nINFO --> DU_APP : F1 Setup Response received");
150 duCb.f1Status = TRUE; //Set F1 status as true
153 /*******************************************************************
155 * @brief Returns cellCb based on cell ID
159 * Function : duGetCellCb
161 * Functionality: Returns DU APP CellCb based on cell ID
163 * @params[in] F1AP_PDU_t ASN decoded F1AP message
164 * @return ROK - success
167 * ****************************************************************/
168 uint8_t duGetCellCb(uint16_t cellId, DuCellCb **cellCb)
172 for(cellIdx=0; cellIdx < MAX_NUM_CELL; cellIdx++)
174 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == cellId))
176 *cellCb = duCb.actvCellLst[cellIdx];
183 DU_LOG("\nERROR --> DU APP : Cell Id %d not found in DU APP", cellId);
190 /******************************************************************************
191 * @brief Check Paging Record for a Particular Paging Frame
195 * Function : checkPagingRecord
198 * Check Paging Record for a Particular Paging Frame
200 * @params[in] DuCellCb *cellCb
202 * @return ROK/RFAILURE (uint8_t return)
205 ******************************************************************************/
206 uint8_t checkPagingRecord(DuCellCb *cellCb)
209 DuPagInfoList *pagInfoLLFromPF = NULLP;
210 DuPagUeList *pagInfo = NULLP;
212 /*DUAPP may send PagingReq to MAC for future SFN so that Schedular can
213 * schedule Paging on the exact occurence of the Slot.*/
214 pf = (cellCb->currSlotInfo.sfn + PAGING_SCHED_DELTA) % MAX_SFN;
216 pagInfoLLFromPF = findPagingInfoFromMap(pf, &(cellCb->pagingInfoMap));
217 if(pagInfoLLFromPF == NULLP)
219 /*No Page is present for pf thus exiting*/
225 pagInfo = handlePageInfoLL(pf, NULLD, &(pagInfoLLFromPF->pagInfoList), TRAVERSE_ALL);
228 if(BuildAndSendDlPcchIndToMac(cellCb->cellId, pf, pagInfo->i_s, &(pagInfo->pagUeList)) != ROK)
230 DU_LOG("\nERROR --> DU APP: Issue in Building Page RRC PDU i_s:%d",pagInfo->i_s);
233 handlePageInfoLL(pf, pagInfo->i_s, &(pagInfoLLFromPF->pagInfoList), DELETE);
235 if(pagInfoLLFromPF->pagInfoList.first == NULLP)
239 }while(pagInfo != NULLP);
241 cmHashListDelete(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF);
242 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
246 /******************************************************************
248 * @brief Send pcch indication to MAC
252 * Function : sendDlPcchIndToMac
254 * Functionality: Send pcch indication to MAC
256 * @Params[in] DlPcchInd *pcchInd
257 * @return ROK - success
260 * ****************************************************************/
262 uint8_t sendDlPcchIndToMac(DlPcchInd *pcchInd)
270 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_PCCH_IND);
272 ret = (*packMacDlPcchIndOpts[pst.selector])(&pst, pcchInd);
275 DU_LOG("\nERROR --> DU APP : sendDlPcchIndToMac(): Failed to DL PCCH indication to MAC");
280 DU_LOG("\nERROR --> DU APP: sendDlPcchIndToMac(): Received pcchInd is NULLP");
287 /*****************************************************************
288 * @brief Handles slot indication from MAC
292 * Function : duHandleSlotInd
295 * Handles slot indication from MAC
297 * @params[in] Post structure pointer
298 * SlotTimingInfo *slotIndInfo
299 * @return ROK - success
303 *****************************************************************/
304 uint8_t duHandleSlotInd(Pst *pst, SlotTimingInfo *slotIndInfo)
306 uint8_t cellIdx = 0, ret = ROK;
307 DuCellCb *duCellCb = NULLP;
311 GET_CELL_IDX(slotIndInfo->cellId, cellIdx);
312 duCellCb = duCb.actvCellLst[cellIdx];
316 duCellCb->currSlotInfo.sfn = slotIndInfo->sfn;
317 duCellCb->currSlotInfo.slot = slotIndInfo->slot;
318 checkPagingRecord(duCellCb);
322 DU_LOG("\nERROR --> DU APP : CellId[%d] doesnot exist", slotIndInfo->cellId);
325 DU_FREE_SHRABL_BUF(pst->region, pst->pool, slotIndInfo, sizeof(SlotTimingInfo));
329 DU_LOG("\nERROR --> DU APP : Recevied null pointer from MAC");
334 /*******************************************************************
336 * @brief Handles cell up indication from MAC
340 * Function : duHandleCellUpInd
343 * Handles cell up indication from MAC
345 * @params[in] Post structure pointer
347 * @return ROK - success
350 * ****************************************************************/
351 uint8_t duHandleCellUpInd(Pst *pst, OduCellId *cellId)
353 DuCellCb *cellCb = NULLP;
355 if(cellId->cellId <=0 || cellId->cellId > MAX_NUM_CELL)
357 DU_LOG("\nERROR --> DU APP : Invalid Cell Id %d in duHandleCellUpInd()", cellId->cellId);
361 if(duGetCellCb(cellId->cellId, &cellCb) != ROK)
364 if((cellCb != NULL) && (cellCb->cellStatus == ACTIVATION_IN_PROGRESS))
366 DU_LOG("\nINFO --> DU APP : 5G-NR Cell %d is UP", cellId->cellId);
367 cellCb->cellStatus = ACTIVATED;
368 gCellStatus = CELL_UP;
370 if(duCfgParam.tempSliceCfg.numOfRrmPolicy)
371 BuildAndSendSliceConfigReq();
373 DU_LOG("\nINFO --> DU APP : Raise cell UP alarm for cell id=%d", cellId->cellId);
374 raiseCellAlrm(CELL_UP_ALARM_ID, cellId->cellId);
375 setCellOpState(cellId->cellId, ENABLED, ACTIVE);
377 duCfgParam.macCellCfg.cellCfg.opState = OP_ENABLED;
378 duCfgParam.macCellCfg.cellCfg.cellState = CELL_ACTIVE;
381 if((pst->selector == ODU_SELECTOR_LWLC) || (pst->selector == ODU_SELECTOR_TC))
382 DU_FREE_SHRABL_BUF(pst->region, pst->pool, cellId, sizeof(OduCellId));
386 /*******************************************************************
388 * @brief Handle Cell delete response from MAC
392 * Function : DuProcMacCellDeleteRsp
394 * Functionality: Handle Cell delete response from MAC
396 * @params[in] Pointer to MacCellDeleteRsp and Pst
397 * @return ROK - success
400 * ****************************************************************/
402 uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
405 uint16_t cellIdx=0, pfIdx=0;
406 DuPagInfoList *pagInfoLLFromPF=NULLP;
410 if(deleteRsp->status == SUCCESSFUL)
412 GET_CELL_IDX(deleteRsp->cellId, cellIdx);
413 DU_LOG("\nINFO --> DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
414 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId))
416 for(pfIdx =0; pfIdx < MAX_SFN; pfIdx++)
418 pagInfoLLFromPF = findPagingInfoFromMap(pfIdx, &(duCb.actvCellLst[cellIdx]->pagingInfoMap));
421 cmHashListDelete(&(duCb.actvCellLst[cellIdx]->pagingInfoMap), (PTR)pagInfoLLFromPF);
422 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
426 memset(duCb.actvCellLst[cellIdx], 0, sizeof(DuCellCb));
427 gCellStatus = CELL_DOWN;
430 DU_LOG("\nINFO --> DU APP : Raise cell down alarm for cell id=%d", deleteRsp->cellId);
431 raiseCellAlrm(CELL_DOWN_ALARM_ID, deleteRsp->cellId);
432 setCellOpState(deleteRsp->cellId, DISABLED, INACTIVE);
437 DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
442 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
448 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
449 [CELL IDX : %d]", deleteRsp->cellId);
452 DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacCellDeleteRsp));
456 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
462 /*******************************************************************
464 * @brief Sending Cell Delete Req To Mac
468 * Function : sendCellDeleteReqToMac
471 * sending Cell Delete Req To Mac
473 * @params[in] uint16_t cellId
474 * @return ROK - success
478 *****************************************************************/
480 uint8_t sendCellDeleteReqToMac(uint16_t cellId)
484 MacCellDeleteReq *cellDelete = NULLP;
486 DU_ALLOC_SHRABL_BUF(cellDelete, sizeof(MacCellDeleteReq));
489 cellDelete->cellId = cellId;
490 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
492 DU_LOG("\nINFO --> DU APP : Sending Cell Delete Request to MAC");
493 /* Processing one Cell at a time to MAC */
494 ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
497 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
498 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDeleteReq));
503 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to allocate memory");
509 /*******************************************************************
511 * @brief DU preocess Cell Delete Req to MAC
515 * Function : duSendCellDeletReq
517 * Functionality: DU process Cell Delete Req to MAC
519 * @params[in] uint16_t cellId
520 * @return ROK - success
523 * ****************************************************************/
525 uint8_t duSendCellDeletReq(uint16_t cellId)
527 uint16_t cellIdx = 0;
528 DU_LOG("\nINFO --> DU APP : Processing Cell Delete Request ");
529 GET_CELL_IDX(cellId, cellIdx);
531 if(duCb.actvCellLst[cellIdx] == NULLP)
533 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
537 if(duCb.actvCellLst[cellIdx]->cellId != cellId)
539 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
544 if(duCb.actvCellLst[cellIdx]->cellStatus != DELETION_IN_PROGRESS)
546 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellStatus[%d] of cellId[%d] is not correct.\
547 Expected CellStatus is DELETION_IN_PROGRESS",duCb.actvCellLst[cellIdx]->cellStatus, cellId);
551 if(duBuildAndSendMacCellStop(cellId) == RFAILED)
553 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): Failed to build and send cell stop request to MAC for\
561 /*******************************************************************
562 * @brief Free PCCH PDU structure
566 * Function : freePcchPdu
568 * Functionality: Free PCCH PDU structure
570 * @params[in] PCCH_Message_t *pcchMsg
574 * ****************************************************************/
575 void freePcchPdu(PCCH_Message_t *pcchMsg)
577 PagingRrc_t *pagingMsg = NULLP;
578 uint8_t recordIdx = 0;
582 if(pcchMsg->message.choice.c1 != NULLP)
584 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
585 if(pagingMsg != NULLP)
587 if(pagingMsg->pagingRecordList)
589 if(pagingMsg->pagingRecordList->list.array != NULLP)
591 for(recordIdx = 0; recordIdx < pagingMsg->pagingRecordList->list.count; recordIdx++)
593 if(pagingMsg->pagingRecordList->list.array[recordIdx] != NULLP)
595 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
596 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
597 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
600 DU_FREE(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
602 DU_FREE(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
604 DU_FREE(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
606 DU_FREE(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
608 DU_FREE(pcchMsg , sizeof(PCCH_Message_t));
612 /*******************************************************************
613 * @brief Builds the Pcch RRC PDU and forwards it to MAC
617 * Function : BuildAndSendDlPcchIndToMac
619 * Functionality: Builds the Pcch RRC PDU[As per Spec 38.331, Annexure A]
620 * and forwards it to MAC as Buffer along with PF and i_s
622 * @params[in] uint16_t cellId, uint16_t pf, uint8_t i_s,CmLListCp *pageUeLL
624 * @return ROK - success
627 * ****************************************************************/
628 uint8_t BuildAndSendDlPcchIndToMac(uint16_t cellId, uint16_t pf, uint8_t i_s, CmLListCp *pageUeLL)
630 CmLList *node = NULLP, *next = NULLP;
631 DuPagUeRecord *ueRecord = NULLP;
632 PCCH_Message_t *pcchMsg = NULLP;
633 asn_enc_rval_t encRetVal;
634 PagingRrc_t *pagingMsg = NULLP;
635 DlPcchInd *macPcchInd = NULLP;
636 uint8_t recordIdx = 0, ret = RFAILED;
638 /*As per 38.473 Sec 9.3.1.39,5G-S-TMSI :48 Bits >> Bytes and 0 UnusedBits */
639 uint8_t totalByteInTmsi = 6, unusedBitsInTmsi = 0;
641 if(pageUeLL == NULLP || pageUeLL->count == 0)
643 DU_LOG("\nERROR --> DU APP: UE Page Record LL is empty");
649 memset(&encRetVal, 0, sizeof(asn_enc_rval_t));
650 DU_ALLOC(pcchMsg , sizeof(PCCH_Message_t));
653 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(): (pccchMsg) Memory Alloction failed!");
656 pcchMsg->message.present = PCCH_MessageType_PR_c1;
657 DU_ALLOC(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
658 if(pcchMsg->message.choice.c1 == NULLP)
660 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (C1) Memory Alloction failed!");
663 pcchMsg->message.choice.c1->present = PCCH_MessageType__c1_PR_paging;
664 DU_ALLOC(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
666 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
667 if(pagingMsg == NULLP)
669 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging) Memory Alloction failed!");
672 DU_ALLOC(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
673 if(pagingMsg->pagingRecordList == NULLP)
675 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging Record List) Memory Alloction failed!");
679 pagingMsg->pagingRecordList->list.count = pageUeLL->count;
681 /*As per Spec 38.331, maxNrofPageRec : 32 [Maximum number of page records]*/
682 if(pageUeLL->count > MAX_PAGING_UE_RECORDS)
684 pagingMsg->pagingRecordList->list.count = MAX_PAGING_UE_RECORDS;
687 pagingMsg->pagingRecordList->list.size = pageUeLL->count * (sizeof(PagingRecord_t *));
688 DU_ALLOC(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
689 if(pagingMsg->pagingRecordList->list.array == NULLP)
691 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Array) Memory Alloction failed!");
694 for(recordIdx = 0; recordIdx < pageUeLL->count; recordIdx++)
696 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
697 if(pagingMsg->pagingRecordList->list.array[recordIdx] == NULLP)
699 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Record) Memory Alloction failed!");
704 node = pageUeLL->first;
705 while(node && (recordIdx < MAX_PAGING_UE_RECORDS))
708 ueRecord = (DuPagUeRecord *)node->node;
711 /*TODO : When Connected Mode Paging will be supported then I_RNTI will be introduced*/
712 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.present = PagingUE_Identity_PR_ng_5G_S_TMSI;
713 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size = totalByteInTmsi*sizeof(uint8_t);
714 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
715 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
716 if(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf == NULLP)
718 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (5gsTmsi buffer) Memory Allocation failed!");
721 fillBitString(&pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI,\
722 unusedBitsInTmsi, totalByteInTmsi, ueRecord->sTmsi);
726 if(duDelNodeFromLList(pageUeLL, node) == ROK)
727 DU_FREE(ueRecord, sizeof(DuPagUeRecord));
730 if(node != NULLP && (recordIdx < MAX_PAGING_UE_RECORDS))
732 /*This leg is hit because Whole UE REcord List was not traversed as
733 * some issue happened thus exiting the main while*/
736 xer_fprint(stdout, &asn_DEF_PCCH_Message, pcchMsg);
737 memset(encBuf, 0, ENC_BUF_MAX_LEN);
739 /* Encode the PCCH RRC PDU as APER */
740 encRetVal = uper_encode(&asn_DEF_PCCH_Message, 0, pcchMsg, PrepFinalEncBuf,\
743 if(encRetVal.encoded == ENCODE_FAIL)
745 DU_LOG("\nERROR --> F1AP : Could not encode Paging structure (at %s)\n",\
746 encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
751 DU_LOG("\nDEBUG --> F1AP : Created APER encoded buffer for RRC PDU for Pcch indication \n");
753 DU_ALLOC_SHRABL_BUF(macPcchInd, sizeof(DlPcchInd));
754 if(macPcchInd == NULLP)
756 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (macPcchInd) Memory Alloction failed!");
760 macPcchInd->cellId = cellId;
762 macPcchInd->i_s = i_s;
763 macPcchInd->pduLen = encBufSize;
764 DU_ALLOC_SHRABL_BUF(macPcchInd->pcchPdu, macPcchInd->pduLen);
765 if(macPcchInd->pcchPdu == NULLP)
767 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (PcchPDU) Memory Alloction failed!");
770 memcpy(macPcchInd->pcchPdu, encBuf, macPcchInd->pduLen);
771 ret = sendDlPcchIndToMac(macPcchInd);
774 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd->pcchPdu, macPcchInd->pduLen);
775 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd, sizeof(DlPcchInd));
782 freePcchPdu(pcchMsg);
786 /*******************************************************************
787 * @brief Keeping the record of Paging having a particular SFN and index associated
791 * Function : insertPagingRecord
793 * Functionality: Insert record of Paging assoc with particular SFN and index associated
795 * @params[in] DuCellCb* cellCb, uint16_t iterations
796 * DuPagingMsg rcvdF1apPagingParam
798 * @return ROK - success
801 * ****************************************************************/
802 uint8_t insertPagingRecord(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam, uint16_t iterations)
804 uint16_t maxIterations = 0;
805 DuPagInfoList *pagInfoLLFromPF = NULLP;
806 DuPagUeList *pageUeLL = NULLP;
807 DuPagUeRecord *ueRecord = NULLP;
810 printPageList(&(cellCb->pagingInfoMap));
813 /*MAX Iteration : A UE can be paged at every T frames thus MAX determines
814 *how many Paging Frame(s) can be considered for Paging this UE*/
815 maxIterations = MAX_SFN/rcvdF1apPagingParam->T;
816 if(iterations >= maxIterations)
818 DU_LOG("\nERROR --> DU APP: MAX Iterations reached for UEID:%d, thus Paging is dropped!", rcvdF1apPagingParam->pagUeId);
822 /*[Step1]: Extracting the PF from the HasMap between PF and PagingInfoList*/
823 pagInfoLLFromPF = findPagingInfoFromMap(rcvdF1apPagingParam->pagingFrame, &(cellCb->pagingInfoMap));
824 if(pagInfoLLFromPF != NULLP)
826 /*[Step2]: Extracting the PageInfo List for the Paging Indices(i_s)*/
827 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, \
828 &(pagInfoLLFromPF->pagInfoList), CREATE);
830 if(pageUeLL != NULLP)
832 /*[Step3]: Check whether MAX UE Record against this PF and i_s has reached(Spec 38.331, Annexure A)*/
833 if(pageUeLL->pagUeList.count < MAX_PAGING_UE_RECORDS)
835 /*[Step4]: Insert the Paging Record to the end of the UE record List*/
836 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi,\
837 &(pageUeLL->pagUeList), CREATE);
839 if(ueRecord == NULLP)
841 DU_LOG("\nERROR --> DU APP: Unable to create UE Record in PagingList");
844 DU_LOG("\nDEBUG --> DU APP: UE Record created successfully in PagingList");
849 /*Since MAX Page record has reached for this PF thus calculating and
850 *moving this UE to next Paging Cycle*/
851 DU_LOG("\nINFO --> DU APP: Max Page Record reached for PagingFrame:%d",rcvdF1apPagingParam->pagingFrame);
852 rcvdF1apPagingParam->pagingFrame = ((rcvdF1apPagingParam->pagingFrame + rcvdF1apPagingParam->T) % MAX_SFN);
855 return insertPagingRecord(cellCb, rcvdF1apPagingParam, iterations);
859 /*Reaching here means that PF has no entry in the PageLists,
860 *Thus creating, Updating and inseritng the Paging Map, List and UE record.*/
862 DU_ALLOC(pagInfoLLFromPF, sizeof(DuPagInfoList));
864 if(pagInfoLLFromPF == NULLP)
866 DU_LOG("\nERROR --> DU APP: PageInfo Map allocation failed.");
869 pagInfoLLFromPF->pf = rcvdF1apPagingParam->pagingFrame;
870 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, &(pagInfoLLFromPF->pagInfoList), CREATE);
871 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi, &(pageUeLL->pagUeList), CREATE);
872 if(cmHashListInsert(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF, (uint8_t *)&(pagInfoLLFromPF->pf), sizeof(uint16_t)) == RFAILED)
874 DU_LOG("\nERROR --> DU APP: Hash Map Insertion Failed for PF:%d.",rcvdF1apPagingParam->pagingFrame);
878 printPageList(&(cellCb->pagingInfoMap));
886 /*******************************************************************
887 * @brief Calculate and fill paging information of a UE belongs to a particular cell
891 * Function : calcAndFillPagingInfoInCellCb
893 * Functionality: Calculate PO and i_s and
894 * fill paging information of a UE in DuCellCb
896 * @params[in] DuCellCb* cellCb, uint8_t pagUeId,
897 * DuPagingMsg rcvdF1apPagingParam
899 * @return ROK - success
902 * ****************************************************************/
903 uint8_t calcAndFillPagingInfoInCellCb(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam)
906 uint16_t T=0, N=0, pagingFrame = 0, n = 0;
907 uint16_t currentSfn = 0, sfn = 0, newSfn = 0;
912 /* calculate paging frame and paging offset */
913 duPcchCfg = duCfgParam.sib1Params.srvCellCfgCommSib.dlCfg.pcchCfg;
914 rcvdF1apPagingParam->pagingFrameOffset = duPcchCfg.pageFrameOffset;
918 * Fill the Value of T (DRX cycle of the UE)
919 * T = min(UE Specific DRX value allocated by upper layers, default DRX
920 * broadcast in System Information) */
921 if((rcvdF1apPagingParam->pagingDrxPres) && (duPcchCfg.dfltPagingCycle > rcvdF1apPagingParam->pagingDrx))
923 T = rcvdF1apPagingParam->pagingDrx;
927 T = duPcchCfg.dfltPagingCycle;
929 rcvdF1apPagingParam->T = T;
931 /* N= number of total paging frames in T */
933 switch(duPcchCfg.nAndPagingFrmOffsetType)
935 case PCCH_Config__nAndPagingFrameOffset_PR_oneT:
938 case PCCH_Config__nAndPagingFrameOffset_PR_halfT:
941 case PCCH_Config__nAndPagingFrameOffset_PR_quarterT:
944 case PCCH_Config__nAndPagingFrameOffset_PR_oneEighthT:
947 case PCCH_Config__nAndPagingFrameOffset_PR_oneSixteenthT:
955 /* calculate the Value of pagingFrame */
956 /*Refer: 38.304 Sec 7.1: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N)*/
957 //RHS of above formula
958 pagingFrame = (T / N) * ((rcvdF1apPagingParam->pagUeId) % N);
960 //LHS of above formula
963 pagingFrame = (pagingFrame - rcvdF1apPagingParam->pagingFrameOffset)%T;
965 else /*Paging Frame = 0 so thus PF will be calculated on Paging Cycle*/
967 pagingFrame = (T - rcvdF1apPagingParam->pagingFrameOffset)%T;
970 /*Paging Frame(SFN for Paging) has to be determined from current SFN. */
971 /*For eg: If T =128, PF(Calculated above) = 20; SFN can be 20,148,276,...
972 * If currSFN is running as 200 then (newSFN % T) == (T/N)*(UE_ID%N)
973 *Thus SFN at which paging has to be sent needs to be delayed and newSFN = 276*/
975 currentSfn = cellCb->currSlotInfo.sfn;
977 /*Multiplication Factor(x) to find the next best SFN to process paging*/
979 /*Below calculation will determine in which nth cycle of T (DRX cycle),new PF
980 * may fall(Delayed one)*/
981 if(currentSfn > pagingFrame)
983 n = ((currentSfn - pagingFrame) / T) + 1;
987 n = ((pagingFrame - currentSfn) / T) + 1;
990 newSfn = pagingFrame + T * n;
992 /*When pagingFrame is future from currSFN then pagingFrame will be used
993 * else pagingFrame is delayed thus newSFN will be used.*/
994 if(currentSfn <= pagingFrame)
996 if(pagingFrame > currentSfn + PAGING_SCHED_DELTA)
1008 if(newSfn > currentSfn + PAGING_SCHED_DELTA)
1012 else /*If newSFN is near to currSFN then delay it more by T*/
1014 newSfn = newSfn + T;
1018 rcvdF1apPagingParam->pagingFrame = (sfn % MAX_SFN);
1019 rcvdF1apPagingParam->i_s = ((uint32_t)(floor(rcvdF1apPagingParam->pagUeId / N)) % ns);
1021 memcpy(&cellCb->tmpPagingInfoOfUe, rcvdF1apPagingParam, sizeof(DuPagingMsg));
1025 DU_LOG("\nINFO --> DU APP : calcAndFillPagingInfoInCellCb(): Received null pointer");
1031 /*******************************************************************
1032 * @brief Paging Processing on a particular cell
1036 * Function : processPagingMsg
1038 * Functionality: Process Paging on a particular cell
1040 * @params[in] uint16_t cellId
1041 * DuPagingMsg rcvdF1apPagingParam
1043 * @return ROK - success
1046 * ****************************************************************/
1047 uint8_t processPagingMsg(uint16_t cellId, DuPagingMsg *rcvdF1apPagingParam)
1049 uint16_t cellIdx = 0, iteration = 0;
1051 GET_CELL_IDX(cellId, cellIdx);
1053 if(duCb.actvCellLst[cellIdx] == NULLP || duCb.actvCellLst[cellIdx]->cellId != cellId)
1055 DU_LOG("\nERROR --> DU APP : processPagingMsg(): CellId[%d] is not found", cellId);
1059 if(calcAndFillPagingInfoInCellCb(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam) != ROK)
1061 DU_LOG("\nERROR --> DU APP : CellCb:%d not present to fill UE Paging Information",cellId);
1064 if(insertPagingRecord(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam, iteration) != ROK)
1066 DU_LOG("\nERROR --> DU APP : Insertion Failed ofUE Paging Information");
1073 /*******************************************************************
1075 * @brief DU build and send dl broacast req and send it to MAC
1079 * Function : duBuildAndSendDlBroadcastReq
1081 * Functionality: DU build and send dl broacast req and send to MAC
1084 * @params[in] cellId, crnti
1085 * @return ROK - success
1088 * ****************************************************************/
1090 uint8_t duBuildAndSendDlBroadcastReq()
1094 MacDlBroadcastReq *dlBroadcast=NULLP;
1096 DU_LOG("\nDEBUG --> DU_APP : Building Dl broadcast request");
1098 DU_ALLOC_SHRABL_BUF(dlBroadcast, sizeof(MacDlBroadcastReq));
1101 /*TODO - fill MAC DL Broadcast Request*/
1103 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_BROADCAST_REQ);
1105 DU_LOG("\nDEBUG --> DU_APP: Sending Dl broadcast Request to MAC ");
1106 ret = (*packMacDlBroadcastReqOpts[pst.selector])(&pst, dlBroadcast);
1109 DU_LOG("\nERROR --> DU_APP: sendDlBroadcastReqToMac(): Failed to send Dl broadcast Req to MAC");
1110 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, dlBroadcast, sizeof(MacDlBroadcastReq));
1115 DU_LOG("\nERROR --> DU_APP: sendDlBroadcastReqToMac(): Failed to allocate memory");
1122 /**********************************************************************
1124 **********************************************************************/