maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added threashold estimation

Browse Source 
Estimate the threshold by simple averaging of mismatched bits of all detected DCI.
This commit is contained in:
Sakthivel Velumani
2021-03-30 14:36:05 +02:00
parent e1e459d27c
commit 4c3d0dddaa
3 changed files with 7 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
executables/nr-ue.c
+1
View File
@@ -107,6 +107,7 @@ void init_nr_ue_vars(PHY_VARS_NR_UE *ue,
ue->Mod_id = UE_id; ue->Mod_id = UE_id;
ue->mac_enabled = 1; ue->mac_enabled = 1;
ue->if_inst = nr_ue_if_module_init(0); ue->if_inst = nr_ue_if_module_init(0);
ue->dci_thres = 0;
// Setting UE mode to NOT_SYNCHED by default // Setting UE mode to NOT_SYNCHED by default
for (gNB_id = 0; gNB_id < nb_connected_gNB; gNB_id++){ for (gNB_id = 0; gNB_id < nb_connected_gNB; gNB_id++){
openair1/PHY/NR_UE_TRANSPORT/dci_nr.c
+4 -3
View File
@@ -885,7 +885,7 @@ uint16_t nr_dci_false_detection(uint64_t *dci,
uint32_t encoder_output[NR_MAX_DCI_SIZE_DWORD]; uint32_t encoder_output[NR_MAX_DCI_SIZE_DWORD];
polar_encoder_fast(dci, (void*)encoder_output, rnti, 1, polar_param); polar_encoder_fast(dci, (void*)encoder_output, rnti, 1, polar_param);
uint8_t *enout_p = (int16_t*)encoder_output; uint8_t *enout_p = (uint8_t*)encoder_output;
uint16_t x = 0; uint16_t x = 0;
for (int i=0; i<encoded_length/8; i++) { for (int i=0; i<encoded_length/8; i++) {
@@ -948,8 +948,9 @@ uint8_t nr_dci_decoding_procedure(PHY_VARS_NR_UE *ue,
LOG_D(PHY, "(%i.%i) Received dci indication (rnti %x,dci format %d,n_CCE %d,payloadSize %d,payload %llx)\n", LOG_D(PHY, "(%i.%i) Received dci indication (rnti %x,dci format %d,n_CCE %d,payloadSize %d,payload %llx)\n",
proc->frame_rx, proc->nr_slot_rx,n_rnti,rel15->dci_format_options[k],CCEind,dci_length,*(unsigned long long*)dci_estimation); proc->frame_rx, proc->nr_slot_rx,n_rnti,rel15->dci_format_options[k],CCEind,dci_length,*(unsigned long long*)dci_estimation);
uint16_t mb = nr_dci_false_detection(dci_estimation,tmp_e,currentPtrDCI,L*108,n_rnti); uint16_t mb = nr_dci_false_detection(dci_estimation,tmp_e,currentPtrDCI,L*108,n_rnti);
if (mb > 10) { ue->dci_thres = (ue->dci_thres + mb) / 2;
LOG_W(PHY,"DCI false positive. Dropping DCI index %d. Mismatched bits: %d/%d\n",j,mb,L*108); if (mb > (ue->dci_thres+10)) {
LOG_W(PHY,"DCI false positive. Dropping DCI index %d. Mismatched bits: %d/%d. Current DCI threshold: %d\n",j,mb,L*108,ue->dci_thres);
continue; continue;
} }
else { else {
openair1/PHY/defs_nr_UE.h
+2
View File
@@ -788,6 +788,8 @@ typedef struct {
uint8_t ho_initiated; uint8_t ho_initiated;
/// \brief indicator that Handover procedure has been triggered /// \brief indicator that Handover procedure has been triggered
uint8_t ho_triggered; uint8_t ho_triggered;
/// threshold for false dci detection
int dci_thres;
/// \brief Measurement variables. /// \brief Measurement variables.
PHY_NR_MEASUREMENTS measurements; PHY_NR_MEASUREMENTS measurements;
NR_DL_FRAME_PARMS frame_parms; NR_DL_FRAME_PARMS frame_parms;