Introduce configuration for maximum UE ULSCH inactivity

ci-scripts/conf_files/gnb.band261.tm1.32PRB.usrpn300.conf

@@ -230,6 +230,7 @@ MACRLCs = (
 	num_cc = 1;
 	tr_s_preference = "local_L1";
 	tr_n_preference = "local_RRC";
+	ulsch_max_slots_inactivity = 1;
         }  
 );
 

ci-scripts/conf_files/gnb.band78.tm1.106PRB.usrpn300.conf

@@ -211,6 +211,7 @@ MACRLCs = (
 	num_cc = 1;
 	tr_s_preference = "local_L1";
 	tr_n_preference = "local_RRC";
+	ulsch_max_slots_inactivity = 1;
 	}
 );
 

openair2/GNB_APP/MACRLC_nr_paramdef.h

@@ -55,7 +55,7 @@
 #define CONFIG_STRING_MACRLC_REMOTE_S_PORTC                "remote_s_portc"
 #define CONFIG_STRING_MACRLC_LOCAL_S_PORTD                 "local_s_portd"
 #define CONFIG_STRING_MACRLC_REMOTE_S_PORTD                "remote_s_portd"
-
+#define CONFIG_STRING_MACRLC_ULSCH_MAX_SLOTS_INACTIVITY    "ulsch_max_slots_inactivity"
 
 /*-------------------------------------------------------------------------------------------------------------------------------------------------------*/
 /*                                            MacRLC  configuration parameters                                                                           */
@@ -79,6 +79,7 @@
 {CONFIG_STRING_MACRLC_REMOTE_S_PORTC,                    NULL,     0,          uptr:NULL,           defintval:50020,           TYPE_UINT,     0},        \
 {CONFIG_STRING_MACRLC_LOCAL_S_PORTD,                     NULL,     0,          uptr:NULL,           defintval:50021,           TYPE_UINT,     0},        \
 {CONFIG_STRING_MACRLC_REMOTE_S_PORTD,                    NULL,     0,          uptr:NULL,           defintval:50021,           TYPE_UINT,     0},        \
+{CONFIG_STRING_MACRLC_ULSCH_MAX_SLOTS_INACTIVITY,        "Maximum number of slots before a UE is scheduled ULSCH due to inactivity", 0, uptr:NULL, defintval:200, TYPE_UINT, 0}, \
 }
 #define MACRLC_CC_IDX                                          0
 #define MACRLC_TRANSPORT_N_PREFERENCE_IDX                      1
@@ -97,5 +98,6 @@
 #define MACRLC_REMOTE_S_PORTC_IDX                              14
 #define MACRLC_LOCAL_S_PORTD_IDX                               15
 #define MACRLC_REMOTE_S_PORTD_IDX                              16
+#define MACRLC_ULSCH_MAX_SLOTS_INACTIVITY                      17
 /*---------------------------------------------------------------------------------------------------------------------------------------------------------*/
 #endif

openair2/GNB_APP/gnb_config.c

@@ -53,7 +53,7 @@
 
 //#include "L1_paramdef.h"
 #include "L1_nr_paramdef.h"
-#include "MACRLC_paramdef.h"
+#include "MACRLC_nr_paramdef.h"
 #include "common/config/config_userapi.h"
 //#include "RRC_config_tools.h"
 #include "gnb_paramdef.h"
@@ -698,6 +698,7 @@ void RCconfig_nr_macrlc() {
       }else { // other midhaul
         AssertFatal(1==0,"MACRLC %d: %s unknown southbound midhaul\n",j,*(MacRLC_ParamList.paramarray[j][MACRLC_TRANSPORT_S_PREFERENCE_IDX].strptr));
       } 
+      RC.nrmac[j]->ulsch_max_slots_inactivity = *(MacRLC_ParamList.paramarray[j][MACRLC_ULSCH_MAX_SLOTS_INACTIVITY].uptr);
     }//  for (j=0;j<RC.nb_nr_macrlc_inst;j++)
   }else {// MacRLC_ParamList.numelt > 0
     AssertFatal (0,"No " CONFIG_STRING_MACRLC_LIST " configuration found");     

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -762,7 +762,7 @@ bool nr_UE_is_to_be_scheduled(module_id_t mod_id, int CC_id, int UE_id, frame_t
    * (2) there is a scheduling request
    * (3) or we did not schedule it in more than 10 frames */
   const bool has_data = sched_ctrl->estimated_ul_buffer > sched_ctrl->sched_ul_bytes;
-  const bool high_inactivity = diff >= 10 * n;
+  const bool high_inactivity = diff >= nrmac->ulsch_max_slots_inactivity;
   LOG_D(MAC,
         "%4d.%2d UL inactivity %d slots has_data %d SR %d\n",
         frame,

openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h

@@ -721,6 +721,9 @@ typedef struct gNB_MAC_INST_s {
   /// points to the right UL slot
   int *preferred_ul_tda[MAX_NUM_BWP];
 
+  /// maximum number of slots before a UE will be scheduled ULSCH automatically
+  uint32_t ulsch_max_slots_inactivity;
+
   /// DL preprocessor for differentiated scheduling
   nr_pp_impl_dl pre_processor_dl;
   /// UL preprocessor for differentiated scheduling