fix fixed mcs issue

srsenb/src/stack/mac/scheduler_ue.cc

@@ -568,6 +568,7 @@ std::pair<int, int> sched_ue::compute_mcs_and_tbs(uint32_t               ue_cc_i
     tbs_bytes = carriers[ue_cc_idx].alloc_tbs_dl(nof_alloc_prbs, nof_re, req_bytes.second, &mcs);
   } else {
     // Fixed MCS
+    mcs       = carriers[ue_cc_idx].fixed_mcs_dl;
     tbs_bytes = sched_utils::get_tbs_bytes(
         (uint32_t)carriers[ue_cc_idx].fixed_mcs_dl, nof_alloc_prbs, cfg.use_tbs_index_alt, false);
   }

srsenb/test/mac/scheduler_test_common.cc

@@ -875,6 +875,7 @@ int common_sched_tester::sim_cfg(sim_sched_args args)
   sim_args0 = std::move(args);
 
   sched::cell_cfg(sim_args0.cell_cfg); // call parent cfg
+  sched::set_sched_cfg(&sim_args0.sched_args);
 
   ue_tester.reset(new user_state_sched_tester{sim_args0.cell_cfg});
   output_tester.clear();

srsenb/test/mac/scheduler_test_rand.cc

@@ -426,6 +426,7 @@ void test_scheduler_rand(sched_sim_events sim)
 
 sched_sim_events rand_sim_params(uint32_t nof_ttis)
 {
+  auto             boolean_dist = []() { return std::uniform_int_distribution<>{0, 1}(srsenb::get_rand_gen()); };
   sched_sim_events sim_gen;
   uint32_t         max_conn_dur = 10000, min_conn_dur = 500;
   float            P_ul_sr = srsenb::randf() * 0.5, P_dl = srsenb::randf() * 0.5;
@@ -444,6 +445,10 @@ sched_sim_events rand_sim_params(uint32_t nof_ttis)
   sim_gen.sim_args.default_ue_sim_cfg.periodic_cqi = true;
   sim_gen.sim_args.start_tti                       = 0;
   sim_gen.sim_args.sim_log                         = log_global.get();
+  sim_gen.sim_args.sched_args.pdsch_mcs =
+      boolean_dist() ? -1 : std::uniform_int_distribution<>{0, 24}(srsenb::get_rand_gen());
+  sim_gen.sim_args.sched_args.pusch_mcs =
+      boolean_dist() ? -1 : std::uniform_int_distribution<>{0, 24}(srsenb::get_rand_gen());
 
   generator.tti_events.resize(nof_ttis);
 

srsenb/test/mac/scheduler_test_utils.h

@@ -109,6 +109,7 @@ struct sim_sched_args {
   std::vector<srsenb::sched_interface::cell_cfg_t> cell_cfg;
   srslte::log*                                     sim_log = nullptr;
   ue_ctxt_test_cfg                                 default_ue_sim_cfg{};
+  srsenb::sched_interface::sched_args_t            sched_args = {};
 };
 
 // generate all events up front