MBMS Scheduler code cleanup

	MCH channel level calculation reformulated according to DLSCH

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

openair1/PHY/LTE_UE_TRANSPORT/pmch_ue.c

@@ -265,16 +265,16 @@ void mch_channel_level(int **dl_ch_estimates_ext,
 
     for (i=0; i<(nre>>2); i++) {
 #if defined(__x86_64__) || defined(__i386__)
-      avg128 = _mm_add_epi32(avg128,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
+      avg128 = _mm_add_epi32(avg128,_mm_srai_epi32(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),log2_approx(nre>>2)-1));
 #elif defined(__arm__)
 
 #endif
     }
 
-    avg[aarx] = (((int*)&avg128)[0] +
+    avg[aarx] = (((((int*)&avg128)[0] +
                  ((int*)&avg128)[1] +
                  ((int*)&avg128)[2] +
-                 ((int*)&avg128)[3])/nre;
+                 ((int*)&avg128)[3])/(nre>>factor2(nre)))*(1<<(log2_approx(nre>>2)-1-factor2(nre))));
 
     //            printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
   }

openair1/SCHED/prach_procedures.c

@@ -166,7 +166,7 @@ void prach_procedures(PHY_VARS_eNB *eNB
   {
     if ((eNB->prach_energy_counter == 100) &&
         (max_preamble_energy[0] > eNB->measurements.prach_I0+eNB->prach_DTX_threshold)) {
-      LOG_I(PHY,"[eNB %d/%d][RAPROC] Frame %d, subframe %d Initiating RA procedure with preamble %d, energy %d.%d dB, delay %d\n",
+      LOG_D(PHY,"[eNB %d/%d][RAPROC] Frame %d, subframe %d Initiating RA procedure with preamble %d, energy %d.%d dB, delay %d\n",
             eNB->Mod_id,
             eNB->CC_id,
             frame,

openair2/LAYER2/MAC/eNB_scheduler_mch.c

@@ -81,14 +81,12 @@ get_mbsfn_sf_alloction(module_id_t module_idP, uint8_t CC_id,
   }
 }
 
-uint32_t bytes_in_buffer=0;
-uint8_t msi_active=0;
-uint8_t msi_pmch_stop=0;
-uint8_t msi_pmch_stop2=0;
-
+static uint32_t bytes_in_buffer=0;
+static uint8_t msi_pmch_stop=0;
+//static uint8_t msi_active=0;
+//static uint8_t msi_pmch_stop2=0;
 uint16_t mbms_rab_id = 2047;
-
-uint8_t msi_sfs=0;
+static uint8_t msi_sfs=0;
 
 
 //MSI_ELEMENT * ptr =NULL;
@@ -534,60 +532,30 @@ schedule_MBMS(module_id_t module_idP, uint8_t CC_id, frame_t frameP,
 	//l=0;
 
 	for (k = 0; k < num_mtch; k++) {	// loop for all session in this MCH (MCH[0]) at this moment
-	    ((MSI_ELEMENT *) msi_ptr)->lcid = cc->mbms_SessionList[0]->list.array[k]->logicalChannelIdentity_r9;	//mtch_lcid;
-	    ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0;	// last subframeP of this mtch (only one mtch now)
-	    ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xB;
-	    //((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0x2; //100
 
-	    ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0x7;	// last subframeP of this mtch (only one mtch now)
-	    //((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xB;
-	    ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xFF; //100
+	    ((MSI_ELEMENT *) msi_ptr)->lcid = cc->mbms_SessionList[0]->list.array[k]->logicalChannelIdentity_r9;	//mtch_lcid;
 
-//	    ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0x0;	// last subframeP of this mtch (only one mtch now)
-//	    ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0x2; //100
-	    
-	    //while((++l)*TBS<=bytes_in_buffer && l<=cc->pmch_Config[0]->sf_AllocEnd_r9){
-	    //	if(l>=6 && l<=cc->pmch_Config[0]->sf_AllocEnd_r9){
-	    //    	((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0; //we limite till 256 TOFIX
-	    //    	((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = l; 
-	    //    }
-	    //}
-	    //ptr = (MSI_ELEMENT *) msi_ptr;
- 	  
 	    if( msi_sfs != 0 )
 	    	msi_pmch_stop = msi_sfs-1;
 	    else 
 		msi_pmch_stop = msi_sfs;
-	    //msi_pmch_stop = bytes_in_buffer/TBS;
-	    //if(bytes_in_buffer%TBS)
-		//msi_pmch_stop++;
 
-	  //
-	    //msi_pmch_stop = 20;  
+	    if( msi_pmch_stop > cc->pmch_Config[0]->sf_AllocEnd_r9)
+		   LOG_W(MAC,"e-MBMS Buffer Overflow\n"); 
+
 	    if(msi_pmch_stop>=num_sf_alloc /*&& msi_pmch_stop <=cc->pmch_Config[0]->sf_AllocEnd_r9*/)  {
-	        ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0;	// last subframeP of this mtch (only one mtch now)
+	        ((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0;	// last subframeP of this mtch (only one mtch now) & stop_sf limited to 256
 	    	//((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = msi_pmch_stop;
 	    	((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = (msi_pmch_stop <=cc->pmch_Config[0]->sf_AllocEnd_r9 ? msi_pmch_stop: cc->pmch_Config[0]->sf_AllocEnd_r9);
 		msi_pmch_stop = (msi_pmch_stop <=cc->pmch_Config[0]->sf_AllocEnd_r9 ? msi_pmch_stop: cc->pmch_Config[0]->sf_AllocEnd_r9);
 	    }else{
 	    	((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0x7;	// last subframeP of this mtch (only one mtch now)
-	    	((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xFF; //100
+	    	((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = 0xFF; 
 		msi_pmch_stop=0;
 	    }
-//	    do{
-//	    	if(l>=0 && l<=cc->pmch_Config[0]->sf_AllocEnd_r9){
-//			((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB = 0; //we limite till 256 TOFIX
-//			((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = l; 
-//		}
-//	    }while((l++)*TBS<=bytes_in_buffer);
-//
-	//    if(((MSI_ELEMENT *) msi_ptr)->stop_sf_MSB !=0x7 && ((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB != 0xFF )
-	//	msi_active=1;
-	//    else
-	//	msi_active=1;
-	    	//((MSI_ELEMENT *) msi_ptr)->stop_sf_LSB = l;
-	    //    l++;
-	   // }
+
+	   
+	   
 	    msi_ptr += sizeof(MSI_ELEMENT);
 	}