Reducing RX gain at gNB

1. Changed rx gain at gNB from 75 to 50. PUCCH works again with OAI-UE.
2. Disabling MAC layer retransmission logs.

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -646,7 +646,7 @@ void nr_schedule_ue_spec(module_id_t module_id,
               retInfo->numDmrsCdmGrpsNoData);
       /* we do not have to do anything, since we do not require to get data
        * from RLC, encode MAC CEs, or copy data to FAPI structures */
-      LOG_W(MAC,
+      LOG_D(MAC,
             "%d.%2d DL retransmission UE %d/RNTI %04x HARQ PID %d round %d NDI %d\n",
             frame,
             slot,

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -627,7 +627,7 @@ void nr_schedule_ulsch(module_id_t module_id,
     if (cur_harq->round == 0) {
       UE_info->mac_stats[UE_id].ulsch_total_bytes_scheduled += sched_pusch->tb_size;
     } else {
-      LOG_W(MAC,
+      LOG_D(MAC,
             "%d.%2d UL retransmission RNTI %04x sched %d.%2d HARQ PID %d round %d NDI %d\n",
             frame,
             slot,

targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf

@@ -246,7 +246,7 @@ RUs = (
          att_rx         = 0;
          bands          = [7];
          max_pdschReferenceSignalPower = -27;
-         max_rxgain                    = 75;
+         max_rxgain                    = 50;
          eNB_instances  = [0];
          ##beamforming 1x2 matrix: 1 layer x 2 antennas
          bf_weights = [0x00007fff, 0x0000];