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Review Msg3 tranmission

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- now transmitting resetting Msg3 slot and frame to -1 after transmission
- cleanup in Msg3 scheduling
- checked Msg3 pdu configuration against the 3GPP specs
This commit is contained in:
cig
2021-01-15 16:53:15 +01:00
parent 70028ba492
commit fcd77ea1da
4 changed files with 80 additions and 68 deletions
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openair2/LAYER2/NR_MAC_UE/mac_defs.h
+2 -2
View File
@@ -285,9 +285,9 @@ typedef struct {
int starting_preamble_nb;
/// Scheduled TX frame for RA Msg3
frame_t msg3_frame;
int msg3_frame;
/// Scheduled TX slot for RA Msg3
slot_t msg3_slot;
int msg3_slot;
/// Received TPC command (in dB) from RAR
int8_t Msg3_TPC;
/// Flag to indicate whether it is the first Msg3 to be transmitted
openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c
+1 -1
View File
@@ -482,6 +482,7 @@ void nr_Msg3_transmitted(module_id_t mod_id, uint8_t CC_id, frame_t frameP, uint
// - fix rrc data req logic
// - retrieve TBS
// - add mac_rrc_nr_data_req_ue, etc ...
// - Msg3 Retransmissions to be scheduled by DCI 0_0
uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
fapi_nr_ul_config_prach_pdu *prach_pdu,
module_id_t mod_id,
@@ -591,7 +592,6 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
if (ra->RA_window_cnt >= 0 && ra->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
nr_ra_succeeded(mod_id, frame, nr_slot_tx);
openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+62 -59
View File
@@ -1277,72 +1277,75 @@ NR_UE_L2_STATE_t nr_ue_scheduler(nr_downlink_indication_t *dl_info, nr_uplink_in
NR_UE_MAC_INST_t *mac = get_mac_inst(mod_id);
RA_config_t *ra = &mac->ra;
if (ra->ra_state == WAIT_RAR){
if (ul_info->slot_tx == ra->msg3_slot && ul_info->frame_tx == ra->msg3_frame){
if (ra->RA_active && ul_info->slot_tx == ra->msg3_slot && ul_info->frame_tx == ra->msg3_frame){
uint8_t ulsch_input_buffer[MAX_ULSCH_PAYLOAD_BYTES];
nr_scheduled_response_t scheduled_response;
fapi_nr_tx_request_t tx_req;
//fapi_nr_ul_config_request_t *ul_config = get_ul_config_request(mac, ul_info->slot_tx);
fapi_nr_ul_config_request_t *ul_config = &mac->ul_config_request[0];
fapi_nr_ul_config_request_pdu_t *ul_config_list = &ul_config->ul_config_list[ul_config->number_pdus];
uint16_t TBS_bytes = ul_config_list->pusch_config_pdu.pusch_data.tb_size;
uint8_t ulsch_input_buffer[MAX_ULSCH_PAYLOAD_BYTES];
nr_scheduled_response_t scheduled_response;
fapi_nr_tx_request_t tx_req;
//fapi_nr_ul_config_request_t *ul_config = get_ul_config_request(mac, ul_info->slot_tx);
fapi_nr_ul_config_request_t *ul_config = &mac->ul_config_request[0];
fapi_nr_ul_config_request_pdu_t *ul_config_list = &ul_config->ul_config_list[ul_config->number_pdus];
uint16_t TBS_bytes = ul_config_list->pusch_config_pdu.pusch_data.tb_size;
//if (IS_SOFTMODEM_NOS1){
// // Getting IP traffic to be transmitted
// data_existing = nr_ue_get_sdu(mod_id,
// cc_id,
// frame_tx,
// slot_tx,
// 0,
// ulsch_input_buffer,
// TBS_bytes,
// &access_mode);
//}
//if (IS_SOFTMODEM_NOS1){
// // Getting IP traffic to be transmitted
// data_existing = nr_ue_get_sdu(mod_id,
// cc_id,
// frame_tx,
// slot_tx,
// 0,
// ulsch_input_buffer,
// TBS_bytes,
// &access_mode);
//}
//Random traffic to be transmitted if there is no IP traffic available for this Tx opportunity
//if (!IS_SOFTMODEM_NOS1 || !data_existing) {
//Use zeros for the header bytes in noS1 mode, in order to make sure that the LCID is not valid
//and block this traffic from being forwarded to the upper layers at the gNB
LOG_D(MAC, "Random data to be tranmsitted (TBS_bytes %d): \n", TBS_bytes);
//Give the first byte a dummy value (a value not corresponding to any valid LCID based on 38.321, Table 6.2.1-2)
//in order to distinguish the PHY random packets at the MAC layer of the gNB receiver from the normal packets that should
//have a valid LCID (nr_process_mac_pdu function)
ulsch_input_buffer[0] = 0x31;
for (int i = 1; i < TBS_bytes; i++) {
ulsch_input_buffer[i] = (unsigned char) rand();
//printf(" input encoder a[%d]=0x%02x\n",i,harq_process_ul_ue->a[i]);
}
//}
LOG_D(MAC, "[UE %d] Frame %d, Subframe %d Adding Msg3 UL Config Request for rnti: %x\n",
ul_info->module_id,
ul_info->frame_tx,
ul_info->slot_tx,
ra->t_crnti);
// Config UL TX PDU
tx_req.slot = ul_info->slot_tx;
tx_req.sfn = ul_info->frame_tx;
tx_req.number_of_pdus = 1;
tx_req.tx_request_body[0].pdu_length = TBS_bytes;
tx_req.tx_request_body[0].pdu_index = 0;
tx_req.tx_request_body[0].pdu = ulsch_input_buffer;
ul_config_list->pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH;
ul_config->number_pdus++;
// scheduled_response
fill_scheduled_response(&scheduled_response, NULL, ul_config, &tx_req, ul_info->module_id, ul_info->cc_id, ul_info->frame_rx, ul_info->slot_rx, ul_info->thread_id);
if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL){
mac->if_module->scheduled_response(&scheduled_response);
//Random traffic to be transmitted if there is no IP traffic available for this Tx opportunity
//if (!IS_SOFTMODEM_NOS1 || !data_existing) {
//Use zeros for the header bytes in noS1 mode, in order to make sure that the LCID is not valid
//and block this traffic from being forwarded to the upper layers at the gNB
LOG_D(MAC, "Random data to be tranmsitted (TBS_bytes %d): \n", TBS_bytes);
//Give the first byte a dummy value (a value not corresponding to any valid LCID based on 38.321, Table 6.2.1-2)
//in order to distinguish the PHY random packets at the MAC layer of the gNB receiver from the normal packets that should
//have a valid LCID (nr_process_mac_pdu function)
ulsch_input_buffer[0] = 0x31;
for (int i = 1; i < TBS_bytes; i++) {
ulsch_input_buffer[i] = (unsigned char) rand();
//printf(" input encoder a[%d]=0x%02x\n",i,harq_process_ul_ue->a[i]);
}
//}
if (!ra->cfra){
nr_Msg3_transmitted(ul_info->module_id, ul_info->cc_id, ul_info->frame_tx, ul_info->gNB_index);
}
LOG_D(MAC, "[UE %d] Frame %d, Subframe %d Adding Msg3 UL Config Request for rnti: %x\n",
ul_info->module_id,
ul_info->frame_tx,
ul_info->slot_tx,
ra->t_crnti);
// Config UL TX PDU
tx_req.slot = ul_info->slot_tx;
tx_req.sfn = ul_info->frame_tx;
tx_req.number_of_pdus = 1;
tx_req.tx_request_body[0].pdu_length = TBS_bytes;
tx_req.tx_request_body[0].pdu_index = 0;
tx_req.tx_request_body[0].pdu = ulsch_input_buffer;
ul_config_list->pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH;
ul_config->number_pdus++;
// scheduled_response
fill_scheduled_response(&scheduled_response, NULL, ul_config, &tx_req, ul_info->module_id, ul_info->cc_id, ul_info->frame_rx, ul_info->slot_rx, ul_info->thread_id);
if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL){
mac->if_module->scheduled_response(&scheduled_response);
}
} else if (ra->ra_state == RA_SUCCEEDED || get_softmodem_params()->phy_test) {
if (!ra->cfra){
nr_Msg3_transmitted(ul_info->module_id, ul_info->cc_id, ul_info->frame_tx, ul_info->gNB_index);
}
// disable future transmissions of Msg3 at the next (frame, slot) occasion
ra->msg3_slot = -1;
ra->msg3_frame = -1;
}
if (ra->ra_state == RA_SUCCEEDED || get_softmodem_params()->phy_test) {
uint8_t nb_dmrs_re_per_rb;
uint8_t ulsch_input_buffer[MAX_ULSCH_PAYLOAD_BYTES];
openair2/LAYER2/NR_MAC_UE/rar_tools_nrUE.c
+15 -6
View File
@@ -52,6 +52,14 @@
// #define DEBUG_RAR
// #define DEBUG_MSG3
// Configuration of Msg3 PDU according to clauses:
// - 8.3 of 3GPP TS 38.213 version 16.3.0 Release 16
// - 6.1.2.2 of TS 38.214
// - 6.1.3 of TS 38.214
// - 6.2.2 of TS 38.214
// - 6.1.4.2 of TS 38.214
// - 6.4.1.1.1 of TS 38.211
// - 6.3.1.7 of 38.211
void nr_config_Msg3_pdu(NR_UE_MAC_INST_t *mac,
int Msg3_f_alloc,
uint8_t Msg3_t_alloc,
@@ -75,11 +83,8 @@ void nr_config_Msg3_pdu(NR_UE_MAC_INST_t *mac,
printf("[DEBUG_MSG3] Configuring 1 Msg3 PDU of %d UL pdus \n", ul_config->number_pdus);
#endif
// Num PRB Overhead from PUSCH-ServingCellConfig
if (mac->scg->spCellConfig->spCellConfigDedicated->uplinkConfig->pusch_ServingCellConfig->choice.setup->xOverhead == NULL)
N_PRB_oh = 0;
else
N_PRB_oh = *mac->scg->spCellConfig->spCellConfigDedicated->uplinkConfig->pusch_ServingCellConfig->choice.setup->xOverhead;
// For Msg3 or MsgA PUSCH transmission the N_PRB_oh is always set to 0
N_PRB_oh = 0;
// active BWP start
int abwp_start = NRRIV2PRBOFFSET(ubwp->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
@@ -129,7 +134,11 @@ void nr_config_Msg3_pdu(NR_UE_MAC_INST_t *mac,
// Frequency hopping
pusch_config_pdu->frequency_hopping = freq_hopping;
// TC-RNTI
pusch_config_pdu->rnti = ra->t_crnti;
if (ra->t_crnti) {
pusch_config_pdu->rnti = ra->t_crnti;
} else {
pusch_config_pdu->rnti = mac->crnti;
}
// DM-RS configuration according to 6.2.2 UE DM-RS transmission procedure in 38.214
pusch_config_pdu->dmrs_config_type = pusch_dmrs_type1;