Add cmd line options for DL&UL phytest scheduling

Add parameters: MCS, Bandwidth (in PRBs), slot scheduling bitmap

executables/nr-softmodem-common.h

@@ -68,11 +68,15 @@
 #define CONFIG_HLP_SOFTS         "Enable soft scope and L1 and L2 stats (Xforms)\n"
 #define CONFIG_HLP_EXMCAL        "Calibrate the EXMIMO borad, available files: exmimo2_2arxg.lime exmimo2_2brxg.lime \n"
 #define CONFIG_HLP_ITTIL         "Generate ITTI analyzser logs (similar to wireshark logs but with more details)\n"
-#define CONFIG_HLP_DLMCS         "Set the maximum downlink MCS\n"
+#define CONFIG_HLP_DLMCS_PHYTEST "Set the downlink MCS for PHYTEST mode\n"
 #define CONFIG_HLP_STMON         "Enable processing timing measurement of lte softmodem on per subframe basis \n"
 #define CONFIG_HLP_PRB           "Set the PRB, valid values: 6, 25, 50, 100  \n"
 #define CONFIG_HLP_MSLOTS        "Skip the missed slots/subframes \n"
-#define CONFIG_HLP_ULMCS         "Set the maximum uplink MCS\n"
+#define CONFIG_HLP_ULMCS_PHYTEST "Set the uplink MCS for PHYTEST mode\n"
+#define CONFIG_HLP_DLBW_PHYTEST  "Set the downlink banwdwidth (in PRBs) for PHYTEST mode\n"
+#define CONFIG_HLP_ULBW_PHYTEST  "Set the uplink banwdwidth (in PRBs) for PHYTEST mode\n"
+#define CONFIG_HLP_DLBM_PHYTEST  "Bitmap for DLSCH slots (slot 0 starts at LSB)\n"
+#define CONFIG_HLP_ULBM_PHYTEST  "Bitmap for ULSCH slots (slot 0 starts at LSB)\n"
 #define CONFIG_HLP_TDD           "Set hardware to TDD mode (default: FDD). Used only with -U (otherwise set in config file).\n"
 #define CONFIG_HLP_UE            "Set the lte softmodem as a UE\n"
 #define CONFIG_HLP_L2MONW        "Enable L2 wireshark messages on localhost \n"

executables/nr-softmodem.c

@@ -160,8 +160,6 @@ int otg_enabled;
 
 //static NR_DL_FRAME_PARMS      *frame_parms[MAX_NUM_CCs];
 //static nfapi_nr_config_request_t *config[MAX_NUM_CCs];
-uint32_t target_dl_mcs = 28; //maximum allowed mcs
-uint32_t target_ul_mcs = 20;
 uint32_t timing_advance = 0;
 uint64_t num_missed_slots=0; // counter for the number of missed slots
 

executables/nr-softmodem.h

@@ -23,14 +23,24 @@
     {"A" ,                    CONFIG_HLP_TADV,        0,                uptr:&timing_advance,               defintval:0,                   TYPE_UINT,   0},        \
     {"E" ,                    CONFIG_HLP_TQFS,        PARAMFLAG_BOOL,   i8ptr:&threequarter_fs,             defintval:0,                   TYPE_INT8,   0},        \
     {"K" ,                    CONFIG_HLP_ITTIL,       PARAMFLAG_NOFREE, strptr:&itti_dump_file,             defstrval:"/tmp/itti.dump",    TYPE_STRING, 0},        \
-    {"m" ,                    CONFIG_HLP_DLMCS,       0,                uptr:&target_dl_mcs,                defintval:0,                   TYPE_UINT,   0},        \
-    {"t" ,                    CONFIG_HLP_ULMCS,       0,                uptr:&target_ul_mcs,                defintval:0,                   TYPE_UINT,   0},        \
+    {"m" ,                    CONFIG_HLP_DLMCS_PHYTEST,0,               uptr:&target_dl_mcs,                defintval:0,                   TYPE_UINT,   0},        \
+    {"t" ,                    CONFIG_HLP_ULMCS_PHYTEST,0,               uptr:&target_ul_mcs,                defintval:0,                   TYPE_UINT,   0},        \
+    {"M" ,                    CONFIG_HLP_DLBW_PHYTEST,0,                uptr:&target_dl_bw,                 defintval:0,                   TYPE_UINT,   0},        \
+    {"T" ,                    CONFIG_HLP_ULBW_PHYTEST,0,                uptr:&target_ul_bw,                 defintval:0,                   TYPE_UINT,   0},        \
+    {"D" ,                    CONFIG_HLP_DLBM_PHYTEST,0,                u64ptr:&dlsch_slot_bitmap,          defintval:0,                   TYPE_UINT64, 0},        \
+    {"U" ,                    CONFIG_HLP_ULBM_PHYTEST,0,                u64ptr:&ulsch_slot_bitmap,          defintval:0,                   TYPE_UINT64, 0},        \
     {"usrp-tx-thread-config", CONFIG_HLP_USRP_THREAD, 0,                iptr:&usrp_tx_thread,               defstrval:0,                   TYPE_INT,    0},        \
     {"s" ,                    CONFIG_HLP_SNR,         0,                dblptr:&snr_dB,                     defdblval:25,                  TYPE_DOUBLE, 0},        \
   }
 
 #include "threads_t.h"
 extern threads_t threads;
+extern uint32_t target_dl_mcs;
+extern uint32_t target_ul_mcs;
+extern uint32_t target_dl_bw;
+extern uint32_t target_ul_bw;
+extern uint64_t dlsch_slot_bitmap;
+extern uint64_t ulsch_slot_bitmap;
 
 // In nr-gnb.c
 extern void init_gNB(int single_thread_flag,int wait_for_sync);

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c

@@ -53,6 +53,7 @@
 
 #include "executables/softmodem-common.h"
 #include "nfapi/oai_integration/vendor_ext.h"
+#include "executables/nr-softmodem.h"
 
 uint16_t nr_pdcch_order_table[6] = { 31, 31, 511, 2047, 2047, 8191 };
 

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

@@ -256,12 +256,15 @@ void nr_schedule_css_dlsch_phytest(module_id_t   module_idP,
 
 extern int getNrOfSymbols(NR_BWP_Downlink_t *bwp, int tda);
 extern uint8_t getN_PRB_DMRS(NR_BWP_Downlink_t *bwp, int numDmrsCdmGrpsNoData);
+uint32_t target_dl_mcs = 9;
+uint32_t target_dl_bw = 50;
+uint64_t dlsch_slot_bitmap = (1<<1);
 /* schedules whole bandwidth for first user, all the time */
 void nr_preprocessor_phytest(module_id_t module_id,
                              frame_t frame,
                              sub_frame_t slot)
 {
-  if (slot != 1)
+  if (!is_xlsch_in_slot(dlsch_slot_bitmap, slot))
     return;
   const int CC_id = 0;
   const NR_ServingCellConfigCommon_t *scc = RC.nrmac[module_id]->common_channels[CC_id].ServingCellConfigCommon;
@@ -275,24 +278,25 @@ void nr_preprocessor_phytest(module_id_t module_id,
   /* find largest unallocated chunk */
   const int bwpSize = NRRIV2BW(sched_ctrl->active_bwp->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
   int rbStart = 0;
-  int tStart = 0;
   int rbSize = 0;
   uint16_t *vrb_map = RC.nrmac[module_id]->common_channels[CC_id].vrb_map;
-  /* find largest unallocated RB region */
-  do {
+  /* loop ensures that we allocate exactly target_dl_bw, or return */
+  while (true) {
     /* advance to first free RB */
-    while (tStart < bwpSize && vrb_map[tStart])
-      tStart++;
-    /* find maximum rbSize at current rbStart */
-    int tSize = 1;
-    while (tStart + tSize < bwpSize && !vrb_map[tStart + tSize])
-      tSize++;
-    if (tSize > rbSize) {
-      rbStart = tStart;
-      rbSize = tSize;
-    }
-    tStart += tSize;
-  } while (tStart < bwpSize);
+    while (rbStart < bwpSize && vrb_map[rbStart])
+      rbStart++;
+    rbSize = 1;
+    /* iterate until we are at target_dl_bw or no available RBs */
+    while (rbStart + rbSize < bwpSize && !vrb_map[rbStart + rbSize] && rbSize < target_dl_bw)
+      rbSize++;
+    /* found target_dl_bw? */
+    if (rbSize == target_dl_bw)
+      break;
+    /* at end and below target_dl_bw? */
+    if (rbStart + rbSize >= bwpSize)
+      return;
+    rbStart += rbSize;
+  }
 
   sched_ctrl->num_total_bytes = 0;
   const int lcid = DL_SCH_LCID_DTCH;
@@ -366,7 +370,7 @@ void nr_preprocessor_phytest(module_id_t module_id,
     else
       sched_pdsch->mcsTableIdx = 2;
   }
-  sched_pdsch->mcs = 9;
+  sched_pdsch->mcs = target_dl_mcs;
   sched_pdsch->numDmrsCdmGrpsNoData = 1;
   sched_pdsch->Qm = nr_get_Qm_dl(sched_pdsch->mcs, sched_pdsch->mcsTableIdx);
   sched_pdsch->R = nr_get_code_rate_dl(sched_pdsch->mcs, sched_pdsch->mcsTableIdx);
@@ -392,6 +396,9 @@ void nr_preprocessor_phytest(module_id_t module_id,
     vrb_map[rb + sched_pdsch->rbStart] = 1;
 }
 
+uint32_t target_ul_mcs = 9;
+uint32_t target_ul_bw = 50;
+uint64_t ulsch_slot_bitmap = (1<<8);
 bool nr_ul_preprocessor_phytest(module_id_t module_id,
                                 frame_t frame,
                                 sub_frame_t slot,
@@ -427,14 +434,11 @@ bool nr_ul_preprocessor_phytest(module_id_t module_id,
   /* check if slot is UL, and that slot is 8 (assuming K2=6 because of UE
    * limitations).  Note that if K2 or the TDD configuration is changed, below
    * conditions might exclude each other and never be true */
-  if (!(is_xlsch_in_slot(ulsch_in_slot_bitmap, sched_slot) && sched_slot == 8))
+  if (!is_xlsch_in_slot(ulsch_slot_bitmap, sched_slot))
     return false;
 
-  const int bw = NRRIV2BW(sched_ctrl->active_ubwp->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
   uint16_t rbStart = 0;
-  uint16_t rbSize = 50; /* due to OAI UE limitations */
-  if (rbSize>bw)
-    rbSize = bw;
+  uint16_t rbSize = target_ul_bw;
 
   uint16_t *vrb_map_UL =
       &RC.nrmac[module_id]->common_channels[CC_id].vrb_map_UL[sched_slot * MAX_BWP_SIZE];
@@ -495,7 +499,7 @@ bool nr_ul_preprocessor_phytest(module_id_t module_id,
                          num_dmrs_cdm_grps_no_data,
                          ps);
 
-  const int mcs = 9;
+  const int mcs = target_ul_mcs;
   NR_sched_pusch_t *sched_pusch = &sched_ctrl->sched_pusch;
   sched_pusch->mcs = mcs;
   sched_pusch->rbStart = rbStart;