Fix issue in 15 PRB 2CA: Due to DCI format ambiguity, the scheduler needs to use Format1A instead of Format1. The number of PRB was incorrectly calculated when generating the grant, leading to corruptions in the MAC PDU.

srsenb/src/stack/mac/sched_ue.cc

@@ -570,8 +570,10 @@ int sched_ue::generate_format1(uint32_t                          pid,
     rbg_interval rbg_int  = rbg_interval::rbgmask_to_rbgs(user_mask);
     uint32_t     P        = srslte_ra_type0_P(15);
     prb_interval prb_int  = prb_interval::rbgs_to_prbs(rbg_int, P);
-    dci->type2_alloc.riv =
-        srslte_ra_type2_to_riv(SRSLTE_MIN(prb_int.length(), cell.nof_prb), prb_int.start(), cell.nof_prb);
+    uint32_t     L_crb =
+        SRSLTE_MIN(sched_utils::count_prb_per_tb(*carriers[ue_cc_idx].get_cell_cfg(), user_mask), cell.nof_prb);
+    uint32_t RB_start    = prb_int.start();
+    dci->type2_alloc.riv = srslte_ra_type2_to_riv(L_crb, RB_start, cell.nof_prb);
     dci->format = SRSLTE_DCI_FORMAT1A;
     if (prb_int.length() != P * user_mask.count()) {
       // This happens if Type0 was using distributed allocation