[Epic-ID: ODUHIGH-517][Task-ID: ODUHIGH-551][SubTask-Id: ODUHIGH-552] Multi UE| ...

[o-du/l2.git] / src / 5gnrsch / sch_fcfs.c

diff --git a/src/5gnrsch/sch_fcfs.c b/src/5gnrsch/sch_fcfs.c
index f8b73fa..e949f3b 100644 (file)
--- a/src/5gnrsch/sch_fcfs.c
+++ b/src/5gnrsch/sch_fcfs.c
@@ -41,6 +41,7 @@ File:     sch_fcfs.c
 #include "du_app_mac_inf.h"
 #include "mac_sch_interface.h"
 #include "sch.h"
+#include "sch_tmr.h"
 #include "sch_utils.h"
 #include "sch_fcfs.h"
 #ifdef NR_DRX 
@@ -976,12 +977,13 @@ uint8_t schFcfsScheduleUlLc(SlotTimingInfo dciTime, SlotTimingInfo puschTime, ui
  *         RFAILED
  *
  * ****************************************************************/
-uint32_t schFcfsScheduleDlLc(SlotTimingInfo pdcchTime, SlotTimingInfo pdschTime, uint8_t pdschNumSymbols, bool isRetx, SchDlHqProcCb **hqP)
+uint32_t schFcfsScheduleDlLc(SlotTimingInfo pdcchTime, SlotTimingInfo pdschTime, uint8_t pdschNumSymbols, \
+                               uint16_t *startPrb, bool isRetx, SchDlHqProcCb **hqP)
 {
    SchFcfsHqProcCb *fcfsHqProcCb;
    SchUeCb *ueCb;
    uint8_t lcIdx = 0;
-   uint16_t startPrb = 0, maxFreePRB = 0;
+   uint16_t maxFreePRB = 0;
    uint16_t mcsIdx = 0;
    uint32_t accumalatedSize = 0;
    CmLListCp *lcLL = NULLP;
@@ -1055,7 +1057,7 @@ uint32_t schFcfsScheduleDlLc(SlotTimingInfo pdcchTime, SlotTimingInfo pdschTime,
    }
 
    /*[Step3]: Calculate Best FREE BLOCK with MAX PRB count*/
-   maxFreePRB = searchLargestFreeBlock((*hqP)->hqEnt->cell, pdschTime, &startPrb, DIR_DL);
+   maxFreePRB = searchLargestFreeBlock((*hqP)->hqEnt->cell, pdschTime, startPrb, DIR_DL);
 
    /*[Step4]: Estimation of PRB and BO which can be allocated to each LC in
     * the list based on RRM policy*/
@@ -1071,7 +1073,7 @@ uint32_t schFcfsScheduleDlLc(SlotTimingInfo pdcchTime, SlotTimingInfo pdschTime,
          if((fcfsHqProcCb->lcCb.dedLcList.count == NULLP) || ((maxFreePRB < rsvdDedicatedPRB)))
          { 
             fcfsHqProcCb->lcCb.sharedNumPrb = maxFreePRB;
-            DU_LOG("\nDEBUG  --> SCH : DL Only Default Slice is scheduled, sharedPRB Count:%d",\
+            DU_LOG("\nDEBUG  -->  SCH : DL Only Default Slice is scheduled, sharedPRB Count:%d",\
                   fcfsHqProcCb->lcCb.sharedNumPrb);
 
             /*PRB Alloc for Default LCs*/
@@ -1151,18 +1153,25 @@ void schFcfsScheduleSlot(SchCellCb *cell, SlotTimingInfo *slotInd, Inst schInst)
    SchUlHqProcCb  *ulHqP = NULLP;
    CmLList        *pendingUeNode;
    CmLList        *node;
-   uint8_t        ueId;
+   uint8_t        ueId, ueCount = 0;
    bool           isRarPending = false, isRarScheduled = false;
    bool           isMsg4Pending = false, isMsg4Scheduled = false;
    bool           isDlMsgPending = false, isDlMsgScheduled = false;
    bool           isUlGrantPending = false, isUlGrantScheduled = false;
 
    fcfsCell = (SchFcfsCellCb *)cell->schSpcCell;
-   
+
    /* Select first UE in the linked list to be scheduled next */
    pendingUeNode = fcfsCell->ueToBeScheduled.first;
-   if(pendingUeNode)
+   ueCount = fcfsCell->ueToBeScheduled.count;
+
+   while(pendingUeNode && ueCount > 0)
    {
+      /*Since Multi-UE perTTI is not supported, re-init following parameters.*/
+      isRarPending = false; isRarScheduled = false;
+      isMsg4Pending = false; isMsg4Scheduled = false;
+      isDlMsgPending = false; isDlMsgScheduled = false;
+      isUlGrantPending = false; isUlGrantScheduled = false;
       if(pendingUeNode->node)
       {
          ueId = *(uint8_t *)(pendingUeNode->node);
@@ -1306,20 +1315,32 @@ void schFcfsScheduleSlot(SchCellCb *cell, SlotTimingInfo *slotInd, Inst schInst)
                }
             }
 
-            if(!isUlGrantPending && !isDlMsgPending)
-            {
-               /* No action required */  
-            }
-            else if((isUlGrantPending && !isUlGrantScheduled) || (isDlMsgPending && !isDlMsgScheduled))
-            {
-               cmLListAdd2Tail(&fcfsCell->ueToBeScheduled, cmLListDelFrm(&fcfsCell->ueToBeScheduled, pendingUeNode));
-            }
-            else
+            if(isUlGrantPending || isDlMsgPending)
             {
-               schFcfsRemoveUeFrmScheduleLst(cell, pendingUeNode);
+               if((isUlGrantPending && !isUlGrantScheduled) || (isDlMsgPending && !isDlMsgScheduled))
+               {
+                  cmLListAdd2Tail(&fcfsCell->ueToBeScheduled, cmLListDelFrm(&fcfsCell->ueToBeScheduled, pendingUeNode));
+               }
+               else
+               {
+                  schFcfsRemoveUeFrmScheduleLst(cell, pendingUeNode);
+               }
             }
          }
       }
+      if(!isUlGrantPending && !isDlMsgPending && !isRarPending && !isMsg4Pending)
+      {
+         DU_LOG("\nERROR  -->  SCH: In SchFcfsScheduleSlot, UE:%d is wrongly queued\
+               in Pending UE List without any actions, Removing the UE from the list",ueId);
+         schFcfsRemoveUeFrmScheduleLst(cell, pendingUeNode);
+      }
+      if(cell->schDlSlotInfo[slotInd->slot]->prbAlloc.numPrbAlloc >= MAX_NUM_RB)
+      {
+         DU_LOG("\nINFO   -->  SCH: No PRB available to proceed with next UE");
+         return;     
+      }
+      pendingUeNode = fcfsCell->ueToBeScheduled.first;
+      ueCount--;
    }
 }