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

RAR reception review @ UE

Browse Source 
- fixes to backoff counter procedure
- updated received target power computation (TS 38.321 R16)
This commit is contained in:
cig
2020-12-27 19:38:03 +01:00
parent a30c8075a2
commit f4b8e780b4
2 changed files with 34 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/LAYER2/NR_MAC_UE/nr_l1_helpers.c
+1 -1
View File
@@ -151,7 +151,7 @@ int nr_get_Po_NOMINAL_PUSCH(NR_PRACH_RESOURCES_t *prach_resources, module_id_t m
delta_preamble = nr_get_DELTA_PREAMBLE(mod_id, CC_id, prach_resources->prach_format);
receivedTargerPower = preambleReceivedTargetPower + delta_preamble + (prach_resources->RA_PREAMBLE_POWER_RAMPING_COUNTER - 1) * prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP;
receivedTargerPower = preambleReceivedTargetPower + delta_preamble + (prach_resources->RA_PREAMBLE_POWER_RAMPING_COUNTER - 1) * prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP + prach_resources->POWER_OFFSET_2STEP_RA;
return receivedTargerPower;
}
openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c
+33 -38
View File
@@ -572,7 +572,7 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
}
} else if (mac->RA_window_cnt != -1) { // RACH is active
LOG_D(MAC, "In %s [%d.%d] RA is active: RA window count %d, RA backoff count %d\n", __FUNCTION__, frame, nr_slot_tx, mac->RA_window_cnt, mac->RA_backoff_cnt);
LOG_D(MAC, "In %s [%d.%d] RA is active: RA window count %d, RA backoff count %d\n", __FUNCTION__, frame, nr_slot_tx, mac->RA_window_cnt, RA_backoff_cnt);
if (mac->RA_BI_found){
prach_resources->RA_PREAMBLE_BACKOFF = prach_resources->RA_SCALING_FACTOR_BI * mac->RA_backoff_indicator;
@@ -583,12 +583,23 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
if (mac->RA_window_cnt >= 0 && mac->RA_RAPID_found == 1) {
// Reset RA_active flag: it disables Msg3 retransmission (8.3 of TS 38.213)
// TbD Msg3 Retransmissions to be scheduled by DCI 0_0
mac->RA_active = 0;
mac->RA_window_cnt = -1;
mac->ra_state = RA_SUCCEEDED;
mac->generate_nr_prach = 2;
LOG_I(MAC, "[MAC][UE %d][RAPROC]: RAR successfully received \n", mod_id);
if (rach_ConfigDedicated) {
if (rach_ConfigDedicated->cfra){
// CFRA
mac->RA_active = 0;
mac->RA_window_cnt = -1;
mac->ra_state = RA_SUCCEEDED;
mac->generate_nr_prach = 2;
LOG_I(MAC, "[UE %d][%d.%d] RAR successfully received\n", mod_id, frame, nr_slot_tx);
}
} else {
LOG_E(MAC, "[%s:%d][UE %d] todo: handling of received contention-based RA praemble...\n", __FUNCTION__, __LINE__, mod_id);
}
} else if (mac->RA_window_cnt == 0 && !mac->RA_RAPID_found) {
LOG_I(MAC, "[UE %d][%d:%d] RAR reception failed \n", mod_id, frame, nr_slot_tx);
@@ -596,9 +607,6 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
mac->ra_state = RA_UE_IDLE;
prach_resources->RA_PREAMBLE_TRANSMISSION_COUNTER++;
// Resetting RA window
nr_get_RA_window(mac);
if (prach_resources->RA_PREAMBLE_TRANSMISSION_COUNTER == preambleTransMax + 1){
LOG_D(MAC, "[UE %d] Frame %d: Maximum number of RACH attempts (%d)\n", mod_id, frame, preambleTransMax);
@@ -608,43 +616,30 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
prach_resources->RA_PREAMBLE_TRANSMISSION_COUNTER = 1;
prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP += prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP << 1; // 2 dB increment
prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER = nr_get_Po_NOMINAL_PUSCH(prach_resources, mod_id, CC_id);
} else {
// Resetting RA window
nr_get_RA_window(mac);
}
} else if (mac->RA_window_cnt > 0) {
// compute backoff parameters
// if (mac->RA_backoff_cnt > 0){
// frame_diff = (sframe_t) frame - mac->RA_backoff_frame;
// if (frame_diff < 0) frame_diff = -frame_diff;
// mac->RA_backoff_frame = frame;
// mac->RA_backoff_slot = nr_slot_tx;
// }
// compute RA window parameters
// if (mac->RA_window_cnt > 0){
// frame_diff = (frame_t) frame - mac->RA_tx_frame;
// if (frame_diff < 0) frame_diff = -frame_diff;
// mac->RA_window_cnt -= ((10 * frame_diff) + (nr_slot_tx - mac->RA_tx_subframe));
// LOG_D(MAC, "[MAC][UE %d][RAPROC] Frame %d, subframe %d: RA Active, adjusted window cnt %d\n", mod_id, frame, nr_slot_tx, mac->RA_window_cnt);
// }
// mac->RA_tx_frame = frame;
// mac->RA_tx_slot = nr_slot_tx;
LOG_D(MAC, "[UE %d][%d.%d]: RAR not received yet (RA window count %d) \n", mod_id, frame, nr_slot_tx, mac->RA_window_cnt);
// Fill in preamble and PRACH resources
if (mac->generate_nr_prach == 1)
nr_get_prach_resources(mod_id, CC_id, gNB_id, prach_resources, prach_pdu, rach_ConfigDedicated);
} else {
mac->RA_window_cnt--;
nr_get_prach_resources(mod_id, CC_id, gNB_id, prach_resources, prach_pdu, rach_ConfigDedicated);
LOG_D(MAC, "[MAC][UE %d][RAPROC][%d.%d]: RAR not received yet (RA window count %d) \n",
mod_id,
frame,
nr_slot_tx,
mac->RA_window_cnt);
} else if (RA_backoff_cnt > 0) {
// Fill in preamble and PRACH resources
if (mac->generate_nr_prach == 1)
LOG_D(MAC, "[UE %d][%d.%d]: RAR not received yet (RA backoff count %d) \n", mod_id, frame, nr_slot_tx, RA_backoff_cnt);
RA_backoff_cnt--;
if ((RA_backoff_cnt > 0 && mac->generate_nr_prach == 1) || RA_backoff_cnt == 0){
nr_get_prach_resources(mod_id, CC_id, gNB_id, prach_resources, prach_pdu, rach_ConfigDedicated);
}
}
}