Bug fix in min num of PRBs to schedule to a UE when there is multiple UEs

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -740,7 +740,7 @@ void pf_dl(module_id_t module_id,
   }
 
   /* Loop UE_sched to find max coeff and allocate transmission */
-  while (max_num_ue > 0 && n_rb_sched > 0 && UE_sched.head >= 0) {
+  while (max_num_ue > 0 && n_rb_sched >= MIN_NUM_PRBS_TO_SCHEDULE && UE_sched.head >= 0) {
 
     /* Find max coeff from UE_sched*/
     int *max = &UE_sched.head; /* assume head is max */

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

@@ -403,7 +403,7 @@ bool nr_find_nb_rb(uint16_t Qm,
     return true;
 
   /* is the minimum enough? */
-  *nb_rb = 5;
+  *nb_rb = MIN_NUM_PRBS_TO_SCHEDULE;
   *tbs = nr_compute_tbs(Qm, R, *nb_rb, nb_symb_sch, nb_dmrs_prb, 0, 0, 1) >> 3;
   if (bytes <= *tbs)
     return true;

openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h

@@ -80,6 +80,8 @@
 #define NR_NB_RA_PROC_MAX 4
 #define MAX_NUM_OF_SSB 64
 
+#define MIN_NUM_PRBS_TO_SCHEDULE  5
+
 /*! \brief NR_list_t is a "list" (of users, HARQ processes, slices, ...).
  * Especially useful in the scheduler and to keep "classes" of users. */
 typedef struct {