Added handling of HI_DCI0_config requests at UE MAC. Eliminated calls to PHY...

Added handling of HI_DCI0_config requests at UE MAC. Eliminated calls to PHY functions from utilized UE MAC functions (e.g., ue_send_sdu) to support phy_stub operation mode.

openair2/LAYER2/MAC/ue_procedures.c

@@ -396,7 +396,10 @@ ue_send_sdu(
         for (i=0; i<6; i++)
           if (tx_sdu[i] != payload_ptr[i]) {
             LOG_E(MAC,"[UE %d][RAPROC] Contention detected, RA failed\n",module_idP);
-            ra_failed(module_idP,CC_id,eNB_index);
+            // Panos: Modification for phy_stub mode operation here. We only need to make sure that the ue_mode is back to
+            // PRACH state.
+            UE_mac_inst[module_idP].UE_mode[eNB_index] = PRACH;
+            //ra_failed(module_idP,CC_id,eNB_index);
             UE_mac_inst[module_idP].RA_contention_resolution_timer_active = 0;
             VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_SDU, VCD_FUNCTION_OUT);
             return;
@@ -417,7 +420,8 @@ ue_send_sdu(
 #ifdef DEBUG_HEADER_PARSING
       LOG_D(MAC,"[UE] CE %d : UE Timing Advance : %d\n",i,payload_ptr[0]);
 #endif
-      process_timing_advance(module_idP,CC_id,payload_ptr[0]);
+      // Panos: Eliminate call to process_timing_advance for the phy_stub UE operation mode. Is this correct?
+      //process_timing_advance(module_idP,CC_id,payload_ptr[0]);
       payload_ptr++;
       break;
 
@@ -1592,7 +1596,7 @@ for (lcid=DCCH; (lcid < MAX_NUM_LCID) && (is_all_lcid_processed == FALSE) ; lcid
 
   // build PHR and update the timers
   if (phr_ce_len == sizeof(POWER_HEADROOM_CMD)) {
-	  //Panos: Substitute with a static value for the MAC layer abstraction
+	  //Panos: Substitute with a static value for the MAC layer abstraction (phy_stub mode)
     //phr_p->PH = get_phr_mapping(module_idP,CC_id,eNB_index);
 	  phr_p->PH = 40;
     phr_p->R  = 0;

openair2/PHY_INTERFACE/phy_stub_UE.c

@@ -17,6 +17,9 @@
 //extern uint8_t nfapi_pnf;
 //UL_IND_t *UL_INFO;
 
+void Msg1_transmitted(module_id_t module_idP,uint8_t CC_id,frame_t frameP, uint8_t eNB_id);
+void Msg3_transmitted(module_id_t module_idP,uint8_t CC_id,frame_t frameP, uint8_t eNB_id);
+
 
 
 void fill_rx_indication_UE_MAC(module_id_t Mod_id,int frame,int subframe, UL_IND_t* UL_INFO, uint8_t *ulsch_buffer, uint16_t buflen, uint16_t rnti)
@@ -865,6 +868,50 @@ int dl_config_req_UE_MAC(nfapi_pnf_p7_config_t* pnf_p7, nfapi_dl_config_request_
 
 
 
+int hi_dci0_req_UE_MAC(nfapi_pnf_p7_config_t* pnf_p7, nfapi_hi_dci0_request_t* req)
+{
+  LOG_D(PHY,"[UE-PHY_STUB] hi dci0 request sfn_sf:%d number_of_dci:%d number_of_hi:%d\n", NFAPI_SFNSF2DEC(req->sfn_sf), req->hi_dci0_request_body.number_of_dci, req->hi_dci0_request_body.number_of_hi);
+
+  //phy_info* phy = (phy_info*)(pnf_p7->user_data);
+
+  module_id_t Mod_id = 0; //Panos: Currently static (only for one UE) but this should change.
+
+  /*struct PHY_VARS_eNB_s *eNB = RC.eNB[0][0];
+  eNB_rxtx_proc_t *proc = &eNB->proc.proc_rxtx[0];*/
+
+  for (int i=0; i<req->hi_dci0_request_body.number_of_dci + req->hi_dci0_request_body.number_of_hi; i++)
+  {
+    LOG_D(PHY,"[UE-PHY_STUB] HI_DCI0_REQ sfn_sf:%d PDU[%d]\n", NFAPI_SFNSF2DEC(req->sfn_sf), i);
+
+    if (req->hi_dci0_request_body.hi_dci0_pdu_list[i].pdu_type == NFAPI_HI_DCI0_DCI_PDU_TYPE)
+    {
+      LOG_D(PHY,"[UE-PHY_STUB] HI_DCI0_REQ sfn_sf:%d PDU[%d] - NFAPI_HI_DCI0_DCI_PDU_TYPE not used \n", NFAPI_SFNSF2DEC(req->sfn_sf), i);
+
+    }
+    else if (req->hi_dci0_request_body.hi_dci0_pdu_list[i].pdu_type == NFAPI_HI_DCI0_HI_PDU_TYPE)
+    {
+      LOG_D(PHY,"[UE-PHY_STUB] HI_DCI0_REQ sfn_sf:%d PDU[%d] - NFAPI_HI_DCI0_HI_PDU_TYPE\n", NFAPI_SFNSF2DEC(req->sfn_sf), i);
+
+      nfapi_hi_dci0_request_pdu_t *hi_dci0_req_pdu = &req->hi_dci0_request_body.hi_dci0_pdu_list[i];
+
+      // This is meaningful only after ACKnowledging the first ULSCH Txon (i.e. Msg3)
+      if(hi_dci0_req_pdu->hi_pdu.hi_pdu_rel8.hi_value == 1 && UE_mac_inst[Mod_id].first_ULSCH_Tx == 1){
+    	  UE_mac_inst[Mod_id].UE_mode[0] = PUSCH;
+    	  UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
+      }
+
+    }
+    else
+    {
+      LOG_E(PHY,"[UE-PHY_STUB] HI_DCI0_REQ sfn_sf:%d PDU[%d] - unknown pdu type:%d\n", NFAPI_SFNSF2DEC(req->sfn_sf), i, req->hi_dci0_request_body.hi_dci0_pdu_list[i].pdu_type);
+    }
+  }
+
+  return 0;
+}
+
+
+
 /*void handle_nfapi_UE_Rx(uint8_t Mod_id, Sched_Rsp_t *Sched_INFO, int eNB_id){
 	// copy data from eNB L2 interface to UE L2 interface
 

openair2/PHY_INTERFACE/phy_stub_UE.h

@@ -80,5 +80,8 @@ void handle_nfapi_ul_pdu_UE_MAC(module_id_t Mod_id,
 int tx_req_UE_MAC(nfapi_pnf_p7_config_t* pnf_p7, nfapi_tx_request_t* req);
 
 
+int hi_dci0_req_UE_MAC(nfapi_pnf_p7_config_t* pnf_p7, nfapi_hi_dci0_request_t* req);
+
+
 
 #endif /* PHY_STUB_UE_H_ */