Commit 79117d4c authored by hardy's avatar hardy

Merge remote-tracking branch 'origin/NR_ULSCH_decoding' into integration_2021_wk46_c

parents e8ce9a73 41e2b21d
......@@ -16,6 +16,7 @@
#ifndef _FAPI_NR_UE_INTERFACE_H_
#define _FAPI_NR_UE_INTERFACE_H_
#include <pthread.h>
#include "stddef.h"
#include "platform_types.h"
......@@ -349,6 +350,7 @@ typedef struct {
uint16_t slot;
uint8_t number_pdus;
fapi_nr_ul_config_request_pdu_t ul_config_list[FAPI_NR_UL_CONFIG_LIST_NUM];
pthread_mutex_t mutex_ul_config;
} fapi_nr_ul_config_request_t;
......
......@@ -153,6 +153,7 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
fapi_nr_ul_config_request_t *ul_config = scheduled_response->ul_config;
pthread_mutex_lock(&ul_config->mutex_ul_config);
for (i = 0; i < ul_config->number_pdus; ++i){
AssertFatal(ul_config->ul_config_list[i].pdu_type <= FAPI_NR_UL_CONFIG_TYPES,"pdu_type %d out of bounds\n",ul_config->ul_config_list[i].pdu_type);
......@@ -174,6 +175,7 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
pusch_config_pdu = &ul_config->ul_config_list[i].pusch_config_pdu;
current_harq_pid = pusch_config_pdu->pusch_data.harq_process_id;
NR_UL_UE_HARQ_t *harq_process_ul_ue = ulsch0->harq_processes[current_harq_pid];
harq_process_ul_ue->status = 0;
if (harq_process_ul_ue){
......@@ -183,14 +185,16 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
ulsch0->f_pusch = pusch_config_pdu->absolute_delta_PUSCH;
if (scheduled_response->tx_request){
fapi_nr_tx_request_body_t *tx_req_body = &scheduled_response->tx_request->tx_request_body[i];
LOG_D(PHY,"%d.%d Copying %d bytes to harq_process_ul_ue->a (harq_pid %d)\n",scheduled_response->frame,slot,tx_req_body->pdu_length,current_harq_pid);
memcpy(harq_process_ul_ue->a, tx_req_body->pdu, tx_req_body->pdu_length);
harq_process_ul_ue->status = ACTIVE;
scheduled_response->tx_request->number_of_pdus = 0;
if (scheduled_response->tx_request) {
for (int j=0; j<scheduled_response->tx_request->number_of_pdus; j++) {
fapi_nr_tx_request_body_t *tx_req_body = &scheduled_response->tx_request->tx_request_body[j];
if (tx_req_body->pdu_index == i) {
LOG_D(PHY,"%d.%d Copying %d bytes to harq_process_ul_ue->a (harq_pid %d)\n",scheduled_response->frame,slot,tx_req_body->pdu_length,current_harq_pid);
memcpy(harq_process_ul_ue->a, tx_req_body->pdu, tx_req_body->pdu_length);
harq_process_ul_ue->status = ACTIVE;
break;
}
}
}
} else {
......@@ -228,7 +232,13 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
break;
}
}
memset(ul_config, 0, sizeof(fapi_nr_ul_config_request_t));
if (scheduled_response->tx_request)
scheduled_response->tx_request->number_of_pdus = 0;
ul_config->sfn = 0;
ul_config->slot = 0;
ul_config->number_pdus = 0;
memset(ul_config->ul_config_list, 0, sizeof(ul_config->ul_config_list));
pthread_mutex_unlock(&ul_config->mutex_ul_config);
}
}
return 0;
......
......@@ -660,6 +660,8 @@ int nr_rrc_mac_config_req_ue(
if (mac->scc_SIB->tdd_UL_DL_ConfigurationCommon->pattern1.nrofUplinkSymbols>0) num_slots_ul++;
LOG_I(MAC, "Initializing ul_config_request. num_slots_ul = %d\n", num_slots_ul);
mac->ul_config_request = (fapi_nr_ul_config_request_t *)calloc(num_slots_ul, sizeof(fapi_nr_ul_config_request_t));
for (int i=0; i<num_slots_ul; i++)
pthread_mutex_init(&(mac->ul_config_request[i].mutex_ul_config), NULL);
// Setup the SSB to Rach Occasions mapping according to the config
build_ssb_to_ro_map(mac);//->scc, mac->phy_config.config_req.cell_config.frame_duplex_type);
mac->if_module->phy_config_request(&mac->phy_config);
......
......@@ -40,6 +40,7 @@
#include "openair2/LAYER2/nr_pdcp/nr_pdcp_entity.h"
#include "executables/softmodem-common.h"
#include "openair2/LAYER2/nr_pdcp/nr_pdcp.h"
#include <pthread.h>
static NR_UE_MAC_INST_t *nr_ue_mac_inst;
......@@ -74,6 +75,8 @@ NR_UE_MAC_INST_t * nr_l2_init_ue(NR_UE_RRC_INST_t* rrc_inst) {
num_slots_ul++;
LOG_D(MAC, "Initializing ul_config_request. num_slots_ul = %d\n", num_slots_ul);
nr_ue_mac_inst->ul_config_request = (fapi_nr_ul_config_request_t *)calloc(num_slots_ul, sizeof(fapi_nr_ul_config_request_t));
for (int i=0; i<num_slots_ul; i++)
pthread_mutex_init(&(nr_ue_mac_inst->ul_config_request[i].mutex_ul_config), NULL);
}
}
else {
......
......@@ -668,15 +668,15 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
LOG_W(MAC, "In %s: ul_config request is NULL. Probably due to unexpected UL DCI in frame.slot %d.%d. Ignoring DCI!\n", __FUNCTION__, frame, slot);
return -1;
}
pthread_mutex_lock(&ul_config->mutex_ul_config);
AssertFatal(ul_config->number_pdus<FAPI_NR_UL_CONFIG_LIST_NUM, "ul_config->number_pdus %d out of bounds\n",ul_config->number_pdus);
nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pusch_config_pdu;
fill_ul_config(ul_config, frame_tx, slot_tx, FAPI_NR_UL_CONFIG_TYPE_PUSCH);
pthread_mutex_unlock(&ul_config->mutex_ul_config);
// Config PUSCH PDU
ret = nr_config_pusch_pdu(mac, pusch_config_pdu, dci, NULL, rnti, &dci_format);
}
break;
......@@ -729,13 +729,15 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
return -1;
}
pthread_mutex_lock(&ul_config->mutex_ul_config);
AssertFatal(ul_config->number_pdus<FAPI_NR_UL_CONFIG_LIST_NUM, "ul_config->number_pdus %d out of bounds\n",ul_config->number_pdus);
nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pusch_config_pdu;
fill_ul_config(ul_config, frame_tx, slot_tx, FAPI_NR_UL_CONFIG_TYPE_PUSCH);
pthread_mutex_unlock(&ul_config->mutex_ul_config);
// Config PUSCH PDU
ret = nr_config_pusch_pdu(mac, pusch_config_pdu, dci, NULL, rnti, &dci_format);
} else AssertFatal(1==0,"Cannot schedule PUSCH\n");
break;
}
......@@ -3921,13 +3923,15 @@ int nr_ue_process_rar(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t
rnti = ra->t_crnti;
}
pthread_mutex_lock(&ul_config->mutex_ul_config);
AssertFatal(ul_config->number_pdus<FAPI_NR_UL_CONFIG_LIST_NUM, "ul_config->number_pdus %d out of bounds\n",ul_config->number_pdus);
nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pusch_config_pdu;
fill_ul_config(ul_config, frame_tx, slot_tx, FAPI_NR_UL_CONFIG_TYPE_PUSCH);
pthread_mutex_unlock(&ul_config->mutex_ul_config);
// Config Msg3 PDU
nr_config_pusch_pdu(mac, pusch_config_pdu, NULL, &rar_grant, rnti, NULL);
}
} else {
......
......@@ -30,6 +30,7 @@
#include <stdio.h>
#include <math.h>
#include <pthread.h>
/* exe */
#include <common/utils/nr/nr_common.h>
......@@ -59,7 +60,6 @@ static prach_association_pattern_t prach_assoc_pattern;
static ssb_list_info_t ssb_list;
void fill_ul_config(fapi_nr_ul_config_request_t *ul_config, frame_t frame_tx, int slot_tx, uint8_t pdu_type){
ul_config->ul_config_list[ul_config->number_pdus].pdu_type = pdu_type;
ul_config->slot = slot_tx;
ul_config->sfn = frame_tx;
......@@ -945,77 +945,88 @@ NR_UE_L2_STATE_t nr_ue_scheduler(nr_downlink_indication_t *dl_info, nr_uplink_in
// Schedule ULSCH only if the current frame and slot match those in ul_config_req
// AND if a UL grant (UL DCI or Msg3) has been received (as indicated by num_pdus)
if (ul_config && (ul_info->slot_tx == ul_config->slot && ul_info->frame_tx == ul_config->sfn) && ul_config->number_pdus > 0){
LOG_D(NR_MAC, "In %s:[%d.%d]: number of UL PDUs: %d with UL transmission in [%d.%d]\n", __FUNCTION__, frame_tx, slot_tx, ul_config->number_pdus, ul_config->sfn, ul_config->slot);
uint8_t ulsch_input_buffer[MAX_ULSCH_PAYLOAD_BYTES];
nr_scheduled_response_t scheduled_response;
fapi_nr_tx_request_t tx_req;
for (int j = 0; j < ul_config->number_pdus; j++) {
if (ul_config){
pthread_mutex_lock(&ul_config->mutex_ul_config);
if ((ul_info->slot_tx == ul_config->slot && ul_info->frame_tx == ul_config->sfn) && ul_config->number_pdus > 0){
LOG_D(NR_MAC, "In %s:[%d.%d]: number of UL PDUs: %d with UL transmission in [%d.%d]\n", __FUNCTION__, frame_tx, slot_tx, ul_config->number_pdus, ul_config->sfn, ul_config->slot);
uint8_t ulsch_input_buffer_array[NFAPI_MAX_NUM_UL_PDU][MAX_ULSCH_PAYLOAD_BYTES];
nr_scheduled_response_t scheduled_response;
fapi_nr_tx_request_t tx_req;
tx_req.slot = slot_tx;
tx_req.sfn = frame_tx;
tx_req.number_of_pdus = 0;
for (int j = 0; j < ul_config->number_pdus; j++) {
uint8_t *ulsch_input_buffer = &(ulsch_input_buffer_array[tx_req.number_of_pdus][MAX_ULSCH_PAYLOAD_BYTES]);
fapi_nr_ul_config_request_pdu_t *ulcfg_pdu = &ul_config->ul_config_list[j];
if (ulcfg_pdu->pdu_type == FAPI_NR_UL_CONFIG_TYPE_PUSCH) {
int mac_pdu_exist = 0;
uint16_t TBS_bytes = ulcfg_pdu->pusch_config_pdu.pusch_data.tb_size;
LOG_D(NR_MAC,"harq_id %d, NDI %d NDI_DCI %d, TBS_bytes %d (ra_state %d)\n",
ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id,
mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id],
ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator,
TBS_bytes,ra->ra_state);
if (ra->ra_state == WAIT_RAR && !ra->cfra){
memcpy(ulsch_input_buffer, mac->ulsch_pdu.payload, TBS_bytes);
LOG_D(NR_MAC,"[RAPROC] Msg3 to be transmitted:\n");
for (int k = 0; k < TBS_bytes; k++) {
LOG_D(NR_MAC,"(%i): 0x%x\n",k,mac->ulsch_pdu.payload[k]);
}
LOG_D(NR_MAC,"Flipping NDI for harq_id %d (Msg3)\n",ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator);
mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator;
mac->first_ul_tx[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = 0;
mac_pdu_exist = 1;
} else {
if ((mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] != ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator ||
mac->first_ul_tx[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id]==1) &&
((get_softmodem_params()->phy_test == 1) ||
(ra->ra_state == RA_SUCCEEDED) ||
(ra->ra_state == WAIT_RAR && ra->cfra))){
// Getting IP traffic to be transmitted
nr_ue_get_sdu(mod_id, cc_id,frame_tx, slot_tx, gNB_index, ulsch_input_buffer, TBS_bytes);
mac_pdu_exist = 1;
}
fapi_nr_ul_config_request_pdu_t *ulcfg_pdu = &ul_config->ul_config_list[j];
LOG_D(NR_MAC,"Flipping NDI for harq_id %d\n",ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator);
mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator;
mac->first_ul_tx[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = 0;
if (ulcfg_pdu->pdu_type == FAPI_NR_UL_CONFIG_TYPE_PUSCH) {
}
uint16_t TBS_bytes = ulcfg_pdu->pusch_config_pdu.pusch_data.tb_size;
LOG_D(NR_MAC,"harq_id %d, NDI %d NDI_DCI %d, TBS_bytes %d (ra_state %d)\n",
ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id,
mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id],
ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator,
TBS_bytes,ra->ra_state);
if (ra->ra_state == WAIT_RAR && !ra->cfra){
memcpy(ulsch_input_buffer, mac->ulsch_pdu.payload, TBS_bytes);
LOG_D(NR_MAC,"[RAPROC] Msg3 to be transmitted:\n");
for (int k = 0; k < TBS_bytes; k++) {
LOG_D(NR_MAC,"(%i): 0x%x\n",k,mac->ulsch_pdu.payload[k]);
// Config UL TX PDU
if (mac_pdu_exist) {
tx_req.tx_request_body[tx_req.number_of_pdus].pdu_length = TBS_bytes;
tx_req.tx_request_body[tx_req.number_of_pdus].pdu_index = j;
tx_req.tx_request_body[tx_req.number_of_pdus].pdu = ulsch_input_buffer;
tx_req.number_of_pdus++;
}
LOG_D(NR_MAC,"Flipping NDI for harq_id %d (Msg3)\n",ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator);
mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator;
mac->first_ul_tx[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = 0;
} else {
if ((mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] != ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator ||
mac->first_ul_tx[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id]==1) &&
((get_softmodem_params()->phy_test == 1) ||
(ra->ra_state == RA_SUCCEEDED) ||
(ra->ra_state == WAIT_RAR && ra->cfra))){
// Getting IP traffic to be transmitted
nr_ue_get_sdu(mod_id, cc_id,frame_tx, slot_tx, gNB_index, ulsch_input_buffer, TBS_bytes);
if (ra->ra_state == WAIT_CONTENTION_RESOLUTION && !ra->cfra){
LOG_I(NR_MAC,"[RAPROC][%d.%d] RA-Msg3 retransmitted\n", frame_tx, slot_tx);
// 38.321 restart the ra-ContentionResolutionTimer at each HARQ retransmission in the first symbol after the end of the Msg3 transmission
nr_Msg3_transmitted(ul_info->module_id, ul_info->cc_id, ul_info->frame_tx, ul_info->slot_tx, ul_info->gNB_index);
}
if (ra->ra_state == WAIT_RAR && !ra->cfra){
LOG_I(NR_MAC,"[RAPROC][%d.%d] RA-Msg3 transmitted\n", frame_tx, slot_tx);
nr_Msg3_transmitted(ul_info->module_id, ul_info->cc_id, ul_info->frame_tx, ul_info->slot_tx, ul_info->gNB_index);
}
LOG_D(NR_MAC,"Flipping NDI for harq_id %d\n",ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator);
mac->UL_ndi[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = ulcfg_pdu->pusch_config_pdu.pusch_data.new_data_indicator;
mac->first_ul_tx[ulcfg_pdu->pusch_config_pdu.pusch_data.harq_process_id] = 0;
}
// Config UL TX PDU
tx_req.slot = slot_tx;
tx_req.sfn = frame_tx;
tx_req.number_of_pdus++;
tx_req.tx_request_body[0].pdu_length = TBS_bytes;
tx_req.tx_request_body[0].pdu_index = j;
tx_req.tx_request_body[0].pdu = ulsch_input_buffer;
if (ra->ra_state == WAIT_CONTENTION_RESOLUTION && !ra->cfra){
LOG_I(NR_MAC,"[RAPROC] RA-Msg3 retransmitted\n");
// 38.321 restart the ra-ContentionResolutionTimer at each HARQ retransmission in the first symbol after the end of the Msg3 transmission
nr_Msg3_transmitted(ul_info->module_id, ul_info->cc_id, ul_info->frame_tx, ul_info->slot_tx, ul_info->gNB_index);
}
if (ra->ra_state == WAIT_RAR && !ra->cfra){
LOG_I(NR_MAC,"[RAPROC] RA-Msg3 transmitted\n");
nr_Msg3_transmitted(ul_info->module_id, ul_info->cc_id, ul_info->frame_tx, ul_info->slot_tx, ul_info->gNB_index);
}
}
}
pthread_mutex_unlock(&ul_config->mutex_ul_config); // avoid double lock
fill_scheduled_response(&scheduled_response, NULL, ul_config, &tx_req, mod_id, cc_id, rx_frame, rx_slot, ul_info->thread_id);
if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL){
mac->if_module->scheduled_response(&scheduled_response);
fill_scheduled_response(&scheduled_response, NULL, ul_config, &tx_req, mod_id, cc_id, rx_frame, rx_slot, ul_info->thread_id);
if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL){
mac->if_module->scheduled_response(&scheduled_response);
}
pthread_mutex_lock(&ul_config->mutex_ul_config);
}
pthread_mutex_unlock(&ul_config->mutex_ul_config);
}
}
......@@ -2144,7 +2155,13 @@ void nr_ue_pucch_scheduler(module_id_t module_idP, frame_t frameP, int slotP, in
pucch->resource_set_id = find_pucch_resource_set(mac, N_UCI);
select_pucch_resource(mac, pucch);
fapi_nr_ul_config_request_t *ul_config = get_ul_config_request(mac, slotP);
pthread_mutex_lock(&ul_config->mutex_ul_config);
AssertFatal(ul_config->number_pdus<FAPI_NR_UL_CONFIG_LIST_NUM, "ul_config->number_pdus %d out of bounds\n",ul_config->number_pdus);
fapi_nr_ul_config_pucch_pdu *pucch_pdu = &ul_config->ul_config_list[ul_config->number_pdus].pucch_config_pdu;
fill_ul_config(ul_config, frameP, slotP, FAPI_NR_UL_CONFIG_TYPE_PUCCH);
pthread_mutex_unlock(&ul_config->mutex_ul_config);
nr_ue_configure_pucch(mac,
slotP,
rnti,
......@@ -2152,7 +2169,6 @@ void nr_ue_pucch_scheduler(module_id_t module_idP, frame_t frameP, int slotP, in
pucch_pdu,
O_SR, O_ACK, O_CSI);
LOG_D(NR_MAC,"Configuring pucch, is_common = %d\n",pucch->is_common);
fill_ul_config(ul_config, frameP, slotP, FAPI_NR_UL_CONFIG_TYPE_PUCCH);
nr_scheduled_response_t scheduled_response;
fill_scheduled_response(&scheduled_response, NULL, ul_config, NULL, module_idP, 0 /*TBR fix*/, frameP, slotP, thread_id);
if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL)
......@@ -2213,13 +2229,16 @@ void nr_ue_prach_scheduler(module_id_t module_idP, frame_t frameP, sub_frame_t s
format0 = format & 0xff; // single PRACH format
format1 = (format >> 8) & 0xff; // dual PRACH format
pthread_mutex_lock(&ul_config->mutex_ul_config);
AssertFatal(ul_config->number_pdus<FAPI_NR_UL_CONFIG_LIST_NUM, "ul_config->number_pdus %d out of bounds\n",ul_config->number_pdus);
prach_config_pdu = &ul_config->ul_config_list[ul_config->number_pdus].prach_config_pdu;
memset(prach_config_pdu, 0, sizeof(fapi_nr_ul_config_prach_pdu));
fill_ul_config(ul_config, frameP, slotP, FAPI_NR_UL_CONFIG_TYPE_PRACH);
pthread_mutex_unlock(&ul_config->mutex_ul_config);
LOG_D(PHY, "In %s: (%p) %d UL PDUs:\n", __FUNCTION__, ul_config, ul_config->number_pdus);
memset(prach_config_pdu, 0, sizeof(fapi_nr_ul_config_prach_pdu));
ncs = get_NCS(rach_ConfigGeneric->zeroCorrelationZoneConfig, format0, setup->restrictedSetConfig);
prach_config_pdu->phys_cell_id = mac->physCellId;
......@@ -2295,6 +2314,7 @@ void nr_ue_prach_scheduler(module_id_t module_idP, frame_t frameP, sub_frame_t s
AssertFatal(1 == 0, "Invalid PRACH format");
}
} // if format1
fill_scheduled_response(&scheduled_response, NULL, ul_config, NULL, module_idP, 0 /*TBR fix*/, frameP, slotP, thread_id);
if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL)
mac->if_module->scheduled_response(&scheduled_response);
......@@ -2723,7 +2743,11 @@ uint8_t nr_ue_get_sdu(module_id_t module_idP,
if (sdu_length > 0) {
LOG_D(NR_MAC, "In %s: Generating UL MAC sub-PDU for SDU %d, length %d bytes, RB with LCID 0x%02x (buflen (TBS) %d bytes)\n", __FUNCTION__,
LOG_D(NR_MAC, "In %s: [UE %d] [%d.%d] UL-DXCH -> ULSCH, Generating UL MAC sub-PDU for SDU %d, length %d bytes, RB with LCID 0x%02x (buflen (TBS) %d bytes)\n",
__FUNCTION__,
module_idP,
frameP,
subframe,
num_sdus + 1,
sdu_length,
lcid,
......
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