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openairinterface5g/openair2/LAYER2/MAC/eNB_scheduler_dlsch.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file eNB_scheduler_dlsch.c
* \brief procedures related to eNB for the DLSCH transport channel
* \author Navid Nikaein and Raymond Knopp
* \date 2010 - 2014
* \email: navid.nikaein@eurecom.fr
* \version 1.0
* @ingroup _mac
*/
#define _GNU_SOURCE
#include "LAYER2/MAC/mac.h"
#include "LAYER2/MAC/mac_proto.h"
#include "LAYER2/MAC/mac_extern.h"
#include "common/utils/LOG/log.h"
#include "nfapi/oai_integration/vendor_ext.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "PHY/LTE_TRANSPORT/transport_common_proto.h"
#include "PHY/defs_eNB.h"
#include "RRC/LTE/rrc_extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "openair2/RRC/LTE/rrc_eNB_UE_context.h"
//#include "LAYER2/MAC/pre_processor.c"
#include "pdcp.h"
#include "SIMULATION/TOOLS/sim.h" // for taus
#include "assertions.h"
#include "intertask_interface.h"
#include <dlfcn.h>
#include "T.h"
#include "openair2/LAYER2/MAC/mac_extern.h"
#define ENABLE_MAC_PAYLOAD_DEBUG
//#define DEBUG_eNB_SCHEDULER 1
#include "common/ran_context.h"
extern RAN_CONTEXT_t RC;
mac_rlc_am_muilist_t rlc_am_mui;
//------------------------------------------------------------------------------
int
generate_dlsch_header(unsigned char *mac_header,
unsigned char num_sdus,
unsigned short *sdu_lengths,
unsigned char *sdu_lcids,
unsigned char drx_cmd,
unsigned short timing_advance_cmd,
unsigned char *ue_cont_res_id,
unsigned char short_padding,
unsigned short post_padding)
//------------------------------------------------------------------------------
{
SCH_SUBHEADER_FIXED *mac_header_ptr = (SCH_SUBHEADER_FIXED *) mac_header;
uint8_t first_element = 0, last_size = 0, i;
uint8_t mac_header_control_elements[16], *ce_ptr;
ce_ptr = &mac_header_control_elements[0];
// compute header components
if (short_padding == 1 || short_padding == 2) {
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
first_element = 1;
last_size = 1;
}
if (short_padding == 2) {
mac_header_ptr->E = 1;
mac_header_ptr++;
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
last_size = 1;
}
if (drx_cmd != 255) {
if (first_element > 0) {
mac_header_ptr->E = 1;
mac_header_ptr++;
} else {
first_element = 1;
}
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = DRX_CMD;
last_size = 1;
}
if (timing_advance_cmd != 31) {
if (first_element > 0) {
mac_header_ptr->E = 1;
mac_header_ptr++;
} else {
first_element = 1;
}
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = TIMING_ADV_CMD;
last_size = 1;
// msg("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
((TIMING_ADVANCE_CMD *) ce_ptr)->R = 0;
AssertFatal(timing_advance_cmd < 64, "timing_advance_cmd %d > 63\n",
timing_advance_cmd);
((TIMING_ADVANCE_CMD *) ce_ptr)->TA = timing_advance_cmd; //(timing_advance_cmd+31)&0x3f;
LOG_D(MAC, "timing advance =%d (%d)\n",
timing_advance_cmd,
((TIMING_ADVANCE_CMD *) ce_ptr)->TA);
ce_ptr += sizeof(TIMING_ADVANCE_CMD);
//msg("offset %d\n",ce_ptr-mac_header_control_elements);
}
if (ue_cont_res_id) {
if (first_element > 0) {
mac_header_ptr->E = 1;
/*
printf("[eNB][MAC] last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
*/
mac_header_ptr++;
} else {
first_element = 1;
}
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = UE_CONT_RES;
last_size = 1;
LOG_T(MAC, "[eNB ][RAPROC] Generate contention resolution msg: %x.%x.%x.%x.%x.%x\n",
ue_cont_res_id[0],
ue_cont_res_id[1],
ue_cont_res_id[2],
ue_cont_res_id[3],
ue_cont_res_id[4],
ue_cont_res_id[5]);
memcpy(ce_ptr,
ue_cont_res_id,
6);
ce_ptr += 6;
// msg("(cont_res) : offset %d\n",ce_ptr-mac_header_control_elements);
}
//msg("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
for (i = 0; i < num_sdus; i++) {
LOG_T(MAC, "[eNB] Generate DLSCH header num sdu %d len sdu %d\n",
num_sdus,
sdu_lengths[i]);
if (first_element > 0) {
mac_header_ptr->E = 1;
/*msg("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
*/
mac_header_ptr += last_size;
//msg("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
} else {
first_element = 1;
}
if (sdu_lengths[i] < 128) {
((SCH_SUBHEADER_SHORT *) mac_header_ptr)->R = 0;
((SCH_SUBHEADER_SHORT *) mac_header_ptr)->E = 0;
((SCH_SUBHEADER_SHORT *) mac_header_ptr)->F = 0;
((SCH_SUBHEADER_SHORT *) mac_header_ptr)->LCID = sdu_lcids[i];
((SCH_SUBHEADER_SHORT *) mac_header_ptr)->L = (unsigned char) sdu_lengths[i];
last_size = 2;
} else {
((SCH_SUBHEADER_LONG *) mac_header_ptr)->R = 0;
((SCH_SUBHEADER_LONG *) mac_header_ptr)->E = 0;
((SCH_SUBHEADER_LONG *) mac_header_ptr)->F = 1;
((SCH_SUBHEADER_LONG *) mac_header_ptr)->LCID = sdu_lcids[i];
((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_MSB = ((unsigned short) sdu_lengths[i] >> 8) & 0x7f;
((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_LSB = (unsigned short) sdu_lengths[i] & 0xff;
((SCH_SUBHEADER_LONG *) mac_header_ptr)->padding = 0x00;
last_size = 3;
#ifdef DEBUG_HEADER_PARSING
LOG_D(MAC, "[eNB] generate long sdu, size %x (MSB %x, LSB %x)\n",
sdu_lengths[i],
((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_MSB,
((SCH_SUBHEADER_LONG *) mac_header_ptr)->L_LSB);
#endif
}
}
/*
printf("last_size %d,mac_header_ptr %p\n",last_size,mac_header_ptr);
printf("last subheader : %x (R%d,E%d,LCID%d)\n",*(unsigned char*)mac_header_ptr,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->R,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->E,
((SCH_SUBHEADER_FIXED *)mac_header_ptr)->LCID);
if (((SCH_SUBHEADER_FIXED*)mac_header_ptr)->LCID < UE_CONT_RES) {
if (((SCH_SUBHEADER_SHORT*)mac_header_ptr)->F == 0)
printf("F = 0, sdu len (L field) %d\n",(((SCH_SUBHEADER_SHORT*)mac_header_ptr)->L));
else
printf("F = 1, sdu len (L field) %d\n",(((SCH_SUBHEADER_LONG*)mac_header_ptr)->L));
}
*/
if (post_padding > 0) { // we have lots of padding at the end of the packet
mac_header_ptr->E = 1;
mac_header_ptr += last_size;
// add a padding element
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
mac_header_ptr++;
} else { // no end of packet padding
// last SDU subhead is of fixed type (sdu length implicitly to be computed at UE)
mac_header_ptr++;
}
//msg("After subheaders %d\n",(uint8_t*)mac_header_ptr - mac_header);
if ((ce_ptr - mac_header_control_elements) > 0) {
// printf("Copying %d bytes for control elements\n",ce_ptr-mac_header_control_elements);
memcpy((void *) mac_header_ptr,
mac_header_control_elements,
ce_ptr - mac_header_control_elements);
mac_header_ptr += (unsigned char) (ce_ptr - mac_header_control_elements);
}
//msg("After CEs %d\n",(uint8_t*)mac_header_ptr - mac_header);
return ((unsigned char *) mac_header_ptr - mac_header);
}
//------------------------------------------------------------------------------
void
set_ul_DAI(int module_idP,
int UE_idP,
int CC_idP,
int frameP,
int subframeP)
//------------------------------------------------------------------------------
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_info_t *UE_info = &eNB->UE_info;
unsigned char DAI;
COMMON_channels_t *cc = &eNB->common_channels[CC_idP];
if (cc->tdd_Config != NULL) { //TDD
DAI = (UE_info->UE_template[CC_idP][UE_idP].DAI - 1) & 3;
LOG_D(MAC, "[eNB %d] CC_id %d Frame %d, subframe %d: DAI %d for UE %d\n",
module_idP,
CC_idP,
frameP,
subframeP,
DAI,
UE_idP);
// Save DAI for Format 0 DCI
switch (cc->tdd_Config->subframeAssignment) {
case 0:
// if ((subframeP==0)||(subframeP==1)||(subframeP==5)||(subframeP==6))
break;
case 1:
switch (subframeP) {
case 0:
case 1:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[7] = DAI;
break;
case 4:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[8] = DAI;
break;
case 5:
case 6:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[2] = DAI;
break;
case 9:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[3] = DAI;
break;
}
break;
case 2:
// if ((subframeP==3)||(subframeP==8))
// UE_info->UE_template[CC_idP][UE_idP].DAI_ul = DAI;
break;
case 3:
//if ((subframeP==6)||(subframeP==8)||(subframeP==0)) {
// LOG_D(MAC,"schedule_ue_spec: setting UL DAI to %d for subframeP %d => %d\n",DAI,subframeP, ((subframeP+8)%10)>>1);
// UE_info->UE_template[CC_idP][UE_idP].DAI_ul[((subframeP+8)%10)>>1] = DAI;
//}
switch (subframeP) {
case 5:
case 6:
case 1:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[2] = DAI;
break;
case 7:
case 8:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[3] = DAI;
break;
case 9:
case 0:
UE_info->UE_template[CC_idP][UE_idP].DAI_ul[4] = DAI;
break;
default:
break;
}
break;
case 4:
// if ((subframeP==8)||(subframeP==9))
// UE_info->UE_template[CC_idP][UE_idP].DAI_ul = DAI;
break;
case 5:
// if (subframeP==8)
// UE_info->UE_template[CC_idP][UE_idP].DAI_ul = DAI;
break;
case 6:
// if ((subframeP==1)||(subframeP==4)||(subframeP==6)||(subframeP==9))
// UE_info->UE_template[CC_idP][UE_idP].DAI_ul = DAI;
break;
default:
break;
}
}
return;
}
void ue_rrc_release(rnti_t rnti) {
if(rrc_release_info.num_UEs == 0 || rlc_am_mui.rrc_mui_num == 0) {
return;
}
while(pthread_mutex_trylock(&rrc_release_freelist)) {
/* spin... */
}
uint16_t release_total = 0;
for (uint16_t n = 0; n < NUMBER_OF_UE_MAX; n++) {
RRC_release_ctrl_t *release_ctrl = &rrc_release_info.RRC_release_ctrl[n];
if(release_ctrl->flag == 0)
continue;
release_total++;
if(release_ctrl->flag == 1 && release_ctrl->rnti == rnti) {
for(uint16_t mui_num = 0; mui_num < rlc_am_mui.rrc_mui_num; mui_num++) {
if(release_ctrl->rrc_eNB_mui == rlc_am_mui.rrc_mui[mui_num]) {
release_ctrl->flag = 3;
LOG_D(MAC,
"DLSCH Release send:index %d rnti %x mui %d mui_num %d flag 1->3\n",
n, rnti, rlc_am_mui.rrc_mui[mui_num], mui_num);
break;
}
}
}
if(release_ctrl->flag == 2 && release_ctrl->rnti == rnti) {
for (uint16_t mui_num = 0; mui_num < rlc_am_mui.rrc_mui_num; mui_num++) {
if(release_ctrl->rrc_eNB_mui == rlc_am_mui.rrc_mui[mui_num]) {
release_ctrl->flag = 4;
LOG_D(MAC, "DLSCH Release send:index %d rnti %x mui %d mui_num %d flag 2->4\n",
n,
rnti,
rlc_am_mui.rrc_mui[mui_num],
mui_num);
break;
}
}
}
if(release_total >= rrc_release_info.num_UEs)
break;
}
pthread_mutex_unlock(&rrc_release_freelist);
}
void check_ra_rnti_mui(module_id_t mod_id, int CC_id, frame_t f, sub_frame_t sf, rnti_t rnti) {
LTE_TDD_Config_t *tdd_config = RC.mac[mod_id]->common_channels[CC_id].tdd_Config;
int harq_pid = frame_subframe2_dl_harq_pid(tdd_config, f, sf);
RA_t *ra = &RC.mac[mod_id]->common_channels[CC_id].ra[0];
for (uint8_t ra_ii = 0; ra_ii < NB_RA_PROC_MAX; ra_ii++, ra++) {
if ((ra->rnti == rnti) && (ra->eRA_state == MSGCRNTI)) {
for (uint16_t mui_num = 0; mui_num < rlc_am_mui.rrc_mui_num; mui_num++) {
if (ra->crnti_rrc_mui == rlc_am_mui.rrc_mui[mui_num]) {
ra->crnti_harq_pid = harq_pid;
ra->eRA_state = MSGCRNTI_ACK;
break;
}
}
}
}
}
//------------------------------------------------------------------------------
void
schedule_dlsch(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP, int *mbsfn_flag) {
if (is_pmch_subframe(frameP, subframeP, &RC.eNB[module_idP][0]->frame_parms))
return;
for (int CC_id = 0; CC_id < RC.nb_mac_CC[module_idP]; CC_id++) {
// for TDD: check that we have to act here, otherwise skip
COMMON_channels_t *cc = &RC.mac[module_idP]->common_channels[CC_id];
if (cc->tdd_Config) {
int tdd_sfa = cc->tdd_Config->subframeAssignment;
switch (subframeP) {
case 0:
// always continue
break;
case 1:
case 2:
continue;
case 3:
if (tdd_sfa != 2 && tdd_sfa != 5)
continue;
break;
case 4:
if (tdd_sfa != 1 && tdd_sfa != 2 && tdd_sfa != 4 && tdd_sfa != 5)
continue;
break;
case 5:
break;
case 6:
case 7:
if (tdd_sfa != 3 && tdd_sfa != 4 && tdd_sfa != 5)
continue;
break;
case 8:
if (tdd_sfa != 2 && tdd_sfa != 3 && tdd_sfa != 4 && tdd_sfa != 5)
continue;
break;
case 9:
if (tdd_sfa == 0)
continue;
break;
}
}
if (mbsfn_flag[CC_id] != 0)
continue;
schedule_ue_spec(module_idP, CC_id, frameP, subframeP);
}
}
// changes to pre-processor for eMTC
//------------------------------------------------------------------------------
void getRepetition(UE_TEMPLATE *pue_template,unsigned int *maxRep, unsigned int *narrowBandindex) {
LTE_EPDCCH_SetConfig_r11_t *epdcch_setconfig_r11;
AssertFatal(pue_template->physicalConfigDedicated !=NULL, "no RRC physical configuration for this UE ") ;
AssertFatal(pue_template->physicalConfigDedicated->ext4 !=NULL, "no RRC physical configuration for this UE ") ;
AssertFatal(pue_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.setConfigToAddModList_r11->list.count > 0,"epdcch config list is empty") ;
epdcch_setconfig_r11 = pue_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.setConfigToAddModList_r11->list.array[0] ;
AssertFatal(epdcch_setconfig_r11->ext2 !=NULL && epdcch_setconfig_r11->ext2->mpdcch_config_r13 !=NULL," mpdcch config not found") ;
*maxRep = epdcch_setconfig_r11->ext2->mpdcch_config_r13->choice.setup.mpdcch_NumRepetition_r13 ;
*narrowBandindex = epdcch_setconfig_r11->ext2->mpdcch_config_r13->choice.setup.mpdcch_Narrowband_r13 ;
}
//------------------------------------------------------------------------------
/*
* Schedule the DLSCH
*/
void
schedule_ue_spec(module_id_t module_idP,
int CC_id,
frame_t frameP,
sub_frame_t subframeP)
//------------------------------------------------------------------------------
{
unsigned char dlsch_buffer[MAX_DLSCH_PAYLOAD_BYTES];
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = eNB->common_channels;
UE_info_t *UE_info = &eNB->UE_info;
const int dl_Bandwidth = cc[CC_id].mib->message.dl_Bandwidth;
const int N_RB_DL = to_prb(dl_Bandwidth);
const int N_RBG = to_rbg(eNB->common_channels[CC_id].mib->message.dl_Bandwidth);
int total_nb_available_rb = N_RB_DL;
nfapi_dl_config_request_body_t *dl_req = &eNB->DL_req[CC_id].dl_config_request_body;
start_meas(&eNB->schedule_dlsch);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_SCHEDULE_DLSCH,
VCD_FUNCTION_IN);
for (int i = 0; i < N_RB_DL; i++)
if (cc[CC_id].vrb_map[i] != 0)
total_nb_available_rb--;
// store the global enb stats:
eNB->eNB_stats[CC_id].num_dlactive_UEs = UE_info->num_UEs;
eNB->eNB_stats[CC_id].available_prbs = total_nb_available_rb;
eNB->eNB_stats[CC_id].total_available_prbs += total_nb_available_rb;
eNB->eNB_stats[CC_id].dlsch_bytes_tx = 0;
eNB->eNB_stats[CC_id].dlsch_pdus_tx = 0;
// CALLING Pre_Processor for downlink scheduling
// (Returns estimation of RBs required by each UE and the allocation on sub-band)
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_PREPROCESSOR,
VCD_FUNCTION_IN);
start_meas(&eNB->schedule_dlsch_preprocessor);
eNB->pre_processor_dl.dl(module_idP, CC_id, frameP, subframeP);
stop_meas(&eNB->schedule_dlsch_preprocessor);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_PREPROCESSOR,
VCD_FUNCTION_OUT);
for (int UE_id = UE_info->list.head; UE_id >= 0; UE_id = UE_info->list.next[UE_id]) {
LOG_D(MAC, "doing schedule_ue_spec for CC_id %d UE %d\n",
CC_id,
UE_id);
UE_sched_ctrl_t *ue_sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
UE_TEMPLATE *ue_template = &UE_info->UE_template[CC_id][UE_id];
eNB_UE_STATS *eNB_UE_stats = &UE_info->eNB_UE_stats[CC_id][UE_id];
eNB_UE_stats->TBS = 0;
const rnti_t rnti = ue_template->rnti;
// If TDD
if (cc[CC_id].tdd_Config != NULL) { //TDD
set_ue_dai(subframeP,
UE_id,
CC_id,
cc[CC_id].tdd_Config->subframeAssignment,
UE_info);
// update UL DAI after DLSCH scheduling
set_ul_DAI(module_idP,
UE_id,
CC_id,
frameP,
subframeP);
}
ue_rrc_release(rnti);
check_ra_rnti_mui(module_idP, CC_id, frameP, subframeP, rnti);
if (ue_sched_ctrl->pre_nb_available_rbs[CC_id] == 0) { // no RBs allocated
LOG_D(MAC, "%d.%d: no RBs allocated for UE %d on CC_id %d\n",
frameP,
subframeP,
UE_id,
CC_id);
continue;
}
int dci_dl_pdu_idx = ue_sched_ctrl->pre_dci_dl_pdu_idx;
if (dci_dl_pdu_idx < 0) {
dci_dl_pdu_idx = CCE_try_allocate_dlsch(
module_idP, CC_id, subframeP, UE_id, ue_sched_ctrl->dl_cqi[CC_id]);
if (dci_dl_pdu_idx < 0) {
LOG_W(MAC, "%d.%d: Dropping Allocation for RNTI 0x%04x/UE %d\n",
frameP,
subframeP,
rnti,
UE_id);
continue;
}
}
/* verify it is the right UE */
nfapi_dl_config_request_pdu_t *dci = &dl_req->dl_config_pdu_list[dci_dl_pdu_idx];
nfapi_dl_config_request_pdu_t *dlsch = &dl_req->dl_config_pdu_list[dci_dl_pdu_idx + 1];
if (dci->pdu_type != NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE
|| dci->dci_dl_pdu.dci_dl_pdu_rel8.rnti != rnti
|| dlsch->pdu_type != NFAPI_DL_CONFIG_DLSCH_PDU_TYPE
|| dlsch->dlsch_pdu.dlsch_pdu_rel8.rnti != rnti) {
LOG_E(MAC, "illegal dl_config_pdu_list index %d for UE %d/RNTI %04x\n",
dci_dl_pdu_idx,
UE_id,
rnti);
continue;
}
const int harq_pid = frame_subframe2_dl_harq_pid(cc->tdd_Config,
frameP,
subframeP);
const int round_DL = ue_sched_ctrl->round[CC_id][harq_pid];
eNB_UE_stats->crnti = rnti;
eNB_UE_stats->rrc_status = mac_eNB_get_rrc_status(module_idP, rnti);
eNB_UE_stats->harq_pid = harq_pid;
eNB_UE_stats->harq_round = round_DL;
eNB_UE_stats->dlsch_rounds[round_DL&7]++;
if (eNB_UE_stats->rrc_status < RRC_RECONFIGURED) {
ue_sched_ctrl->uplane_inactivity_timer = 0;
}
LOG_D(MAC, "[eNB %d] Frame %d: Scheduling UE %d on CC_id %d (rnti %x, harq_pid %d, round %d, rb %d, cqi %d, mcs %d, rrc %d)\n",
module_idP,
frameP,
UE_id,
CC_id,
rnti,
harq_pid,
round_DL,
ue_sched_ctrl->pre_nb_available_rbs[CC_id],
ue_sched_ctrl->dl_cqi[CC_id],
eNB_UE_stats->dlsch_mcs1,
eNB_UE_stats->rrc_status);
/* Process retransmission */
if (round_DL != 8) {
// get freq_allocation
const int nb_rb = ue_template->nb_rb[harq_pid];
int TBS = get_TBS_DL(ue_template->oldmcs1[harq_pid], nb_rb);
const uint32_t rbc = allocate_prbs_sub(
nb_rb, N_RB_DL, N_RBG, ue_sched_ctrl->rballoc_sub_UE[CC_id]);
if (nb_rb > ue_sched_ctrl->pre_nb_available_rbs[CC_id])
LOG_W(MAC,
"[eNB %d] %d.%d CC_id %d : should not schedule UE %d, its "
"retransmission takes more resources than we have\n",
module_idP,
frameP,
subframeP,
CC_id,
UE_id);
/* CDRX */
ue_sched_ctrl->harq_rtt_timer[CC_id][harq_pid] = 1; // restart HARQ RTT timer
if (ue_sched_ctrl->cdrx_configured) {
ue_sched_ctrl->drx_retransmission_timer[harq_pid] = 0; // stop drx retransmission
/*
* Note: contrary to the spec drx_retransmission_timer[harq_pid] is reset not stop.
*/
if (harq_pid == 0) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_RETRANSMISSION_HARQ0, (unsigned long) ue_sched_ctrl->drx_retransmission_timer[0]);
}
}
if (cc[CC_id].tdd_Config != NULL) {
ue_template->DAI++;
update_ul_dci(module_idP,
CC_id,
rnti,
ue_template->DAI,
subframeP);
LOG_D(MAC, "DAI update: CC_id %d subframeP %d: UE %d, DAI %d\n",
CC_id,
subframeP,
UE_id,
ue_template->DAI);
}
nfapi_dl_config_request_pdu_t *dl_config_pdu = &dl_req->dl_config_pdu_list[dci_dl_pdu_idx];
switch (get_tmode(module_idP, CC_id, UE_id)) {
case 1:
case 2:
case 7:
default:
LOG_D(MAC, "retransmission DL_REQ: rnti:%x\n",
rnti);
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 1; // CRNTI: see Table 4-10 from SCF082 - nFAPI specifications
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = harq_pid;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = 1; // Don't adjust power when retransmitting
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1 = ue_template->oldNDI[harq_pid];
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = ue_template->oldmcs1[harq_pid];
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1 = round_DL & 3;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = rbc;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_allocation_type = 0;
// TDD
if (cc[CC_id].tdd_Config != NULL) {
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.downlink_assignment_index = (ue_template->DAI - 1) & 3;
LOG_D(MAC, "[eNB %d] Retransmission CC_id %d : harq_pid %d, round %d, dai %d, mcs %d\n",
module_idP,
CC_id,
harq_pid,
round_DL,
ue_template->DAI - 1,
ue_template->oldmcs1[harq_pid]);
} else {
LOG_D(MAC, "[eNB %d] Retransmission CC_id %d : harq_pid %d, round %d, mcs %d\n",
module_idP,
CC_id,
harq_pid,
round_DL,
ue_template->oldmcs1[harq_pid]);
}
dl_req->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
eNB->DL_req[CC_id].sfn_sf = frameP<<4 | subframeP;
eNB->DL_req[CC_id].header.message_id = NFAPI_DL_CONFIG_REQUEST;
fill_nfapi_dlsch_config(&dl_req->dl_config_pdu_list[dci_dl_pdu_idx + 1],
TBS,
-1, // retransmission, no pdu_index
rnti,
0, // type 0 allocation from 7.1.6 in 36.213
0, // virtual_resource_block_assignment_flag, unused here
rbc, // resource_block_coding
getQm(ue_template->oldmcs1[harq_pid]),
round_DL & 3, // redundancy version
1, // transport blocks
0, // transport block to codeword swap flag
cc[CC_id].p_eNB == 1 ? 0 : 1, // transmission_scheme
1, // number of layers
1, // number of subbands
// uint8_t codebook_index,
4, // UE category capacity
ue_template->physicalConfigDedicated->pdsch_ConfigDedicated->p_a,
0, // delta_power_offset for TM5
0, // ngap
0, // nprb
cc[CC_id].p_eNB == 1 ? 1 : 2, // transmission mode
0, //number of PRBs treated as one subband, not used here
0); // number of beamforming vectors, not used here
LOG_D(MAC, "Filled NFAPI configuration for DCI/DLSCH %d, retransmission round %d\n",
eNB->pdu_index[CC_id],
round_DL);
program_dlsch_acknak(module_idP,
CC_id,
UE_id,
frameP,
subframeP,
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
// No TX request for retransmission (check if null request for FAPI)
}
eNB_UE_stats->num_retransmission += 1;
eNB_UE_stats->rbs_used_retx = nb_rb;
eNB_UE_stats->total_rbs_used_retx += nb_rb;
eNB_UE_stats->dlsch_mcs2 = eNB_UE_stats->dlsch_mcs1;
eNB_UE_stats->TBS = TBS;
} else {
// Now check RLC information to compute number of required RBs
// get maximum TBS size for RLC request
const int nb_rb = ue_sched_ctrl->pre_nb_available_rbs[CC_id];
int TBS = get_TBS_DL(eNB_UE_stats->dlsch_mcs1, nb_rb);
const uint32_t rbc = allocate_prbs_sub(nb_rb, N_RB_DL, N_RBG, ue_sched_ctrl->rballoc_sub_UE[CC_id]);
// add the length for all the control elements (timing adv, drx, etc) : header + payload
if (ue_sched_ctrl->ta_timer)
ue_sched_ctrl->ta_timer--;
int ta_update = 31;
if (ue_sched_ctrl->ta_timer == 0) {
ta_update = ue_sched_ctrl->ta_update;
/* if we send TA then set timer to not send it for a while */
if (ta_update != 31) {
ue_sched_ctrl->ta_timer = 20;
}
/* reset ta_update */
ue_sched_ctrl->ta_update = 31;
ue_sched_ctrl->ta_update_f = 31.0;
}
int ta_len = (ta_update != 31) ? 2 : 0;
int num_sdus = 0;
uint16_t sdu_lengths[NB_RB_MAX];
int sdu_length_total = 0;
int header_length_total = 0;
int header_length_last = 0;
unsigned char sdu_lcids[NB_RB_MAX];
for (int i = 0; i < ue_sched_ctrl->dl_lc_num; ++i) {
const int lcid = ue_sched_ctrl->dl_lc_ids[i]; // will match DCCH, DCCH1, DTCH
if (TBS - ta_len - header_length_total - sdu_length_total - 3 <= 0)
break;
if (ue_sched_ctrl->dl_lc_bytes[i] == 0) // no data in this LC!
continue;
const uint32_t data =
min(ue_sched_ctrl->dl_lc_bytes[i],
TBS - ta_len - header_length_total - sdu_length_total - 3);
LOG_D(MAC,
"[eNB %d] SFN/SF %d.%d, LC%d->DLSCH CC_id %d, Requesting %d "
"bytes from RLC (RRC message)\n",
module_idP,
frameP,
subframeP,
lcid,
CC_id,
data);
sdu_lengths[num_sdus] = mac_rlc_data_req(module_idP,
rnti,
module_idP,
frameP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
lcid,
data,
(char *)&dlsch_buffer[sdu_length_total],
0,
0
);
#ifdef DEBUG_eNB_SCHEDULER
LOG_T(MAC, "[eNB %d][%d] CC_id %d Got %d bytes :",
module_idP,
lcid,
CC_id,
sdu_lengths[num_sdus]);
for (int j = 0; j < sdu_lengths[num_sdus]; ++j)
LOG_T(MAC, "%x ", dlsch_buffer[sdu_length_total + j]);
LOG_T(MAC, "\n");
#endif
T(T_ENB_MAC_UE_DL_SDU,
T_INT(module_idP),
T_INT(CC_id),
T_INT(rnti),
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_INT(lcid),
T_INT(sdu_lengths[num_sdus]));
LOG_D(MAC, "[eNB %d][LC %d] CC_id %d Got %d bytes from RLC\n",
module_idP,
lcid,
CC_id,
sdu_lengths[num_sdus]);
sdu_lcids[num_sdus] = lcid;
sdu_length_total += sdu_lengths[num_sdus];
eNB_UE_stats->num_pdu_tx[lcid] += 1;
eNB_UE_stats->lcid_sdu[num_sdus] = lcid;
eNB_UE_stats->sdu_length_tx[lcid] = sdu_lengths[num_sdus];
eNB_UE_stats->num_bytes_tx[lcid] += sdu_lengths[num_sdus];
header_length_last = 1 + 1 + (sdu_lengths[num_sdus] >= 128);
header_length_total += header_length_last;
num_sdus += 1;
if (lcid >= 3) { // if this is DTCH
ue_sched_ctrl->uplane_inactivity_timer = 0;
// reset RRC inactivity timer after uplane activity
rrc_eNB_ue_context_t *ue_contextP = rrc_eNB_get_ue_context(RC.rrc[module_idP], rnti);
if (ue_contextP == NULL)
LOG_E(MAC, "[eNB %d] CC_id %d Couldn't find the context associated to UE (RNTI %d) and reset RRC inactivity timer\n",
module_idP,
CC_id,
rnti);
ue_contextP->ue_context.ue_rrc_inactivity_timer = 1;
}
}
/* Last header does not have length field */
if (header_length_total) {
header_length_total -= header_length_last;
header_length_total++;
}
// there is at least one SDU or TA command
if (ta_len + sdu_length_total + header_length_total > 0) {
// Now compute number of required RBs for total sdu length
// Assume RAH format 2
int mcs = eNB_UE_stats->dlsch_mcs1;
/* TODO make special function */
// decrease mcs until TBS falls below required length
while ((TBS > sdu_length_total + header_length_total + ta_len) && (mcs > 0)) {
mcs--;
TBS = get_TBS_DL(mcs, nb_rb);
}
// if we have decreased too much or we don't have enough RBs, increase MCS
while (TBS < sdu_length_total + header_length_total + ta_len && mcs < 28) {
// the second part of this condition is useless since dl_pow_off is
// always 2?
//&& ((ue_sched_ctrl->dl_pow_off[CC_id] > 0 && mcs < 28) || (ue_sched_ctrl->dl_pow_off[CC_id] == 0 && mcs <= 15))) {
mcs++;
TBS = get_TBS_DL(mcs,
nb_rb);
}
LOG_D(MAC, "dlsch_mcs before and after the rate matching = (%d, %d), TBS %d, nb_rb %d\n",
eNB_UE_stats->dlsch_mcs1, mcs, TBS, nb_rb);
int post_padding = TBS - header_length_total - sdu_length_total - ta_len > 2;
int padding = post_padding ? 0 : TBS - header_length_total - sdu_length_total - ta_len;
const int offset = generate_dlsch_header((unsigned char *) UE_info->DLSCH_pdu[CC_id][0][UE_id].payload[0],
num_sdus, //num_sdus
sdu_lengths, //
sdu_lcids,
255, // no drx
ta_update, // timing advance
NULL, // contention res id
padding,
post_padding);
//#ifdef DEBUG_eNB_SCHEDULER
if (ta_update != 31) {
LOG_D(MAC,
"[eNB %d][DLSCH] Frame %d Generate header for UE_id %d on CC_id %d: sdu_length_total %d, num_sdus %d, sdu_lengths[0] %d, sdu_lcids[0] %d => payload offset %d,timing advance value : %d, padding %d,post_padding %d,(mcs %d, TBS %d, nb_rb %d),header_length %d\n",
module_idP,
frameP,
UE_id,
CC_id,
sdu_length_total,
num_sdus,
sdu_lengths[0],
sdu_lcids[0],
offset,
ta_update,
padding,
post_padding,
mcs,
TBS,
nb_rb,
header_length_total);
}
//#endif
#ifdef DEBUG_eNB_SCHEDULER
LOG_T(MAC, "[eNB %d] First 16 bytes of DLSCH : \n");
for (int i = 0; i < 16; i++) {
LOG_T(MAC, "%x.",
dlsch_buffer[i]);
}
LOG_T(MAC, "\n");
#endif
// cycle through SDUs and place in dlsch_buffer
DLSCH_PDU *dlsch_pdu = &UE_info->DLSCH_pdu[CC_id][0][UE_id];
memcpy(&dlsch_pdu->payload[0][offset], dlsch_buffer, sdu_length_total);
// fill remainder of DLSCH with 0
for (int j = 0; j < TBS - sdu_length_total - offset; j++) {
dlsch_pdu->payload[0][offset + sdu_length_total + j] = 0;
}
ws_trace_t tmp = {.direction = DIRECTION_DOWNLINK,
.pdu_buffer = (uint8_t *)dlsch_pdu->payload,
.pdu_buffer_size = TBS,
.ueid = module_idP,
.rntiType = WS_C_RNTI,
.rnti = UE_RNTI(module_idP, UE_id),
.sysFrame = eNB->frame,
.subframe = eNB->subframe,
.harq_pid = harq_pid};
trace_pdu(&tmp);
T(T_ENB_MAC_UE_DL_PDU_WITH_DATA,
T_INT(module_idP),
T_INT(CC_id),
T_INT(rnti),
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_BUFFER(dlsch_pdu->payload[0],
TBS));
ue_template->nb_rb[harq_pid] = nb_rb;
// store stats
eNB->eNB_stats[CC_id].dlsch_bytes_tx += sdu_length_total;
eNB->eNB_stats[CC_id].dlsch_pdus_tx += 1;
eNB_UE_stats->rbs_used = nb_rb;
eNB_UE_stats->num_mac_sdu_tx = num_sdus;
eNB_UE_stats->total_rbs_used += nb_rb;
eNB_UE_stats->dlsch_mcs2 = mcs;
eNB_UE_stats->TBS = TBS;
eNB_UE_stats->overhead_bytes = TBS - sdu_length_total;
eNB_UE_stats->total_sdu_bytes += sdu_length_total;
eNB_UE_stats->total_pdu_bytes += TBS;
eNB_UE_stats->total_num_pdus += 1;
if (cc[CC_id].tdd_Config != NULL) { // TDD
ue_template->DAI++;
update_ul_dci(module_idP,
CC_id,
rnti,
ue_template->DAI,
subframeP);
}
// do PUCCH power control
// this is the snr
// unit is not dBm, it's special from nfapi
// converting to dBm
int snr = ue_sched_ctrl->pucch1_snr[CC_id];
int target_snr = eNB->puCch10xSnr / 10;
// this assumes accumulated tpc
// make sure that we are only sending a tpc update once a frame, otherwise the control loop will freak out
int32_t framex10psubframe = ue_template->pucch_tpc_tx_frame * 10 + ue_template->pucch_tpc_tx_subframe;
int tpc = 1;
if (framex10psubframe + 10 <= (frameP * 10) + subframeP || //normal case
(framex10psubframe > (frameP * 10) + subframeP && 10240 - framex10psubframe + (frameP * 10) + subframeP >= 10)) { //frame wrap-around
if (ue_sched_ctrl->pucch1_cqi_update[CC_id] == 1) {
ue_sched_ctrl->pucch1_cqi_update[CC_id] = 0;
ue_template->pucch_tpc_tx_frame = frameP;
ue_template->pucch_tpc_tx_subframe = subframeP;
if (snr > target_snr + PUCCH_PCHYST) {
tpc = 0; //-1
ue_sched_ctrl->pucch_tpc_accumulated[CC_id]--;
} else if (snr < target_snr - PUCCH_PCHYST) {
tpc = 2; //+1
ue_sched_ctrl->pucch_tpc_accumulated[CC_id]--;
} else {
tpc = 1; //0
}
LOG_D(MAC, "[eNB %d] DLSCH scheduler: frame %d, subframe %d, harq_pid %d, tpc %d (accumulated %d), snr/target snr %d/%d (normal case)\n",
module_idP,
frameP,
subframeP,
harq_pid,
tpc,
ue_sched_ctrl->pucch_tpc_accumulated[CC_id],
snr,
target_snr);
} // Po_PUCCH has been updated
}
nfapi_dl_config_request_pdu_t *dl_config_pdu = &dl_req->dl_config_pdu_list[dci_dl_pdu_idx];
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 1; // CRNTI : see Table 4-10 from SCF082 - nFAPI specifications
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = harq_pid;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = tpc; // dont adjust power when retransmitting
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1 = 1 - ue_template->oldNDI[harq_pid];
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = mcs;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1 = 0;
//deactivate second codeword
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_2 = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_2 = 1;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = rbc;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_allocation_type = 0;
if (cc[CC_id].tdd_Config != NULL) { //TDD
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.downlink_assignment_index = (ue_template->DAI - 1) & 3;
LOG_D(MAC, "[eNB %d] Initial transmission CC_id %d : harq_pid %d, dai %d, mcs %d\n",
module_idP,
CC_id,
harq_pid,
(ue_template->DAI - 1),
mcs);
} else {
LOG_D(MAC, "[eNB %d] Initial transmission CC_id %d : harq_pid %d, mcs %d\n",
module_idP,
CC_id,
harq_pid,
mcs);
}
LOG_D(MAC, "Checking feasibility pdu %d (new sdu)\n",
dl_req->number_pdu);
ue_sched_ctrl->round[CC_id][harq_pid] = 0;
dl_req->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
eNB->DL_req[CC_id].sfn_sf = frameP << 4 | subframeP;
eNB->DL_req[CC_id].header.message_id = NFAPI_DL_CONFIG_REQUEST;
/* CDRX */
ue_sched_ctrl->harq_rtt_timer[CC_id][harq_pid] = 1; // restart HARQ RTT timer
if (ue_sched_ctrl->cdrx_configured) {
ue_sched_ctrl->drx_inactivity_timer = 1; // restart drx inactivity timer when new transmission
ue_sched_ctrl->drx_retransmission_timer[harq_pid] = 0; // stop drx retransmission
/*
* Note: contrary to the spec drx_retransmission_timer[harq_pid] is reset not stop.
*/
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_INACTIVITY, (unsigned long) ue_sched_ctrl->drx_inactivity_timer);
if (harq_pid == 0) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DRX_RETRANSMISSION_HARQ0, (unsigned long) ue_sched_ctrl->drx_retransmission_timer[0]);
}
}
// Toggle NDI for next time
LOG_D(MAC, "CC_id %d Frame %d, subframeP %d: Toggling Format1 NDI for UE %d (rnti %x/%d) oldNDI %d\n",
CC_id,
frameP,
subframeP,
UE_id,
rnti,
harq_pid,
ue_template->oldNDI[harq_pid]);
ue_template->oldNDI[harq_pid] = 1 - ue_template->oldNDI[harq_pid];
ue_template->oldmcs1[harq_pid] = mcs;
ue_template->oldmcs2[harq_pid] = 0;
AssertFatal(ue_template->physicalConfigDedicated != NULL, "physicalConfigDedicated is NULL\n");
AssertFatal(ue_template->physicalConfigDedicated->pdsch_ConfigDedicated != NULL,
"physicalConfigDedicated->pdsch_ConfigDedicated is NULL\n");
fill_nfapi_dlsch_config(&dl_req->dl_config_pdu_list[dci_dl_pdu_idx + 1],
TBS,
eNB->pdu_index[CC_id],
rnti,
0, // type 0 allocation from 7.1.6 in 36.213
0, // virtual_resource_block_assignment_flag, unused here
rbc,// resource_block_coding
getQm(mcs),
0, // redundancy version
1, // transport blocks
0, // transport block to codeword swap flag
cc[CC_id].p_eNB == 1 ? 0 : 1, // transmission_scheme
1, // number of layers
1, // number of subbands
// uint8_t codebook_index,
4, // UE category capacity
ue_template->physicalConfigDedicated->pdsch_ConfigDedicated->p_a,
0, // delta_power_offset for TM5
0, // ngap
0, // nprb
cc[CC_id].p_eNB == 1 ? 1 : 2, // transmission mode
0, //number of PRBs treated as one subband, not used here
0); // number of beamforming vectors, not used here
eNB->TX_req[CC_id].sfn_sf = fill_nfapi_tx_req(&eNB->TX_req[CC_id].tx_request_body,
(frameP * 10) + subframeP,
TBS,
eNB->pdu_index[CC_id],
dlsch_pdu->payload[0]);
LOG_D(MAC, "Filled NFAPI configuration for DCI/DLSCH/TXREQ %d, new SDU\n",
eNB->pdu_index[CC_id]);
eNB->pdu_index[CC_id]++;
program_dlsch_acknak(module_idP,
CC_id,
UE_id,
frameP,
subframeP,
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.cce_idx);
}
}
} // UE_id loop
stop_meas(&eNB->schedule_dlsch);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_SCHEDULE_DLSCH,
VCD_FUNCTION_OUT);
}
//------------------------------------------------------------------------------
/*
* Default DLSCH scheduler for LTE-M
*/
void
schedule_ue_spec_br(module_id_t module_idP,
frame_t frameP,
sub_frame_t subframeP)
//------------------------------------------------------------------------------
{
int CC_id = 0;
int UE_id = -1;
int rvseq[4] = {0,2,3,1};
int mcs = 0;
int round_DL = 0;
int ta_update = 0;
int32_t tpc = 1;
int32_t snr = 0;
int32_t target_snr = 0;
uint16_t TBS = 0;
uint16_t j = 0;
uint16_t sdu_lengths[NB_RB_MAX];
uint16_t rnti = 0;
uint16_t padding = 0;
uint16_t post_padding = 0;
uint16_t sdu_length_total = 0;
mac_rlc_status_resp_t rlc_status;
rrc_eNB_ue_context_t *ue_contextP = NULL;
unsigned char header_len_dcch = 0;
unsigned char header_len_dcch_tmp = 0;
unsigned char header_len_dtch = 0;
unsigned char header_len_dtch_tmp = 0;
unsigned char header_len_dtch_last = 0;
unsigned char ta_len = 0;
unsigned char sdu_lcids[NB_RB_MAX];
unsigned char lcid = 0;
unsigned char offset,num_sdus=0;
unsigned char dlsch_buffer[MAX_DLSCH_PAYLOAD_BYTES];
eNB_MAC_INST *mac = RC.mac[module_idP];
COMMON_channels_t *cc = mac->common_channels;
UE_info_t *UE_info = &mac->UE_info;
UE_TEMPLATE *UE_template = NULL;
UE_sched_ctrl_t *ue_sched_ctl = NULL;
nfapi_dl_config_request_pdu_t *dl_config_pdu = NULL;
nfapi_ul_config_request_pdu_t *ul_config_pdu = NULL;
nfapi_tx_request_pdu_t *TX_req = NULL;
nfapi_dl_config_request_body_t *dl_req = NULL;
nfapi_ul_config_request_body_t *ul_req = NULL;
struct LTE_PRACH_ConfigSIB_v1310 *ext4_prach = NULL;
struct LTE_PUCCH_ConfigCommon_v1310 *ext4_pucch = NULL;
LTE_PRACH_ParametersListCE_r13_t *prach_ParametersListCE_r13 = NULL;
struct LTE_N1PUCCH_AN_InfoList_r13 *pucch_N1PUCCH_AN_InfoList_r13 = NULL;
int pucchreps[4] = { 1, 1, 1, 1 };
int n1pucchan[4] = { 0, 0, 0, 0 };
uint32_t ackNAK_absSF;
int first_rb;
dl_req = &(mac->DL_req[CC_id].dl_config_request_body);
dl_config_pdu = &(dl_req->dl_config_pdu_list[dl_req->number_pdu]);
/* Return if frame is even */
if ((frameP & 1) == 0) {
return;
}
if (cc[CC_id].mib->message.schedulingInfoSIB1_BR_r13 == 0) {
return;
}
if (cc[CC_id].radioResourceConfigCommon_BR) {
ext4_prach = cc[CC_id].radioResourceConfigCommon_BR->ext4->prach_ConfigCommon_v1310;
ext4_pucch = cc[CC_id].radioResourceConfigCommon_BR->ext4->pucch_ConfigCommon_v1310;
prach_ParametersListCE_r13 = &ext4_prach->prach_ParametersListCE_r13;
pucch_N1PUCCH_AN_InfoList_r13 = ext4_pucch->n1PUCCH_AN_InfoList_r13;
AssertFatal (prach_ParametersListCE_r13 != NULL, "prach_ParametersListCE_r13 is null\n");
AssertFatal (pucch_N1PUCCH_AN_InfoList_r13 != NULL, "pucch_N1PUCCH_AN_InfoList_r13 is null\n");
/* Check to verify CE-Level compatibility in SIB2_BR */
AssertFatal (prach_ParametersListCE_r13->list.count == pucch_N1PUCCH_AN_InfoList_r13->list.count, "prach_ParametersListCE_r13->list.count!= pucch_N1PUCCH_AN_InfoList_r13->list.count\n");
switch (prach_ParametersListCE_r13->list.count) {
case 4:
n1pucchan[3] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[3];
AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level3 shouldn't be NULL\n");
pucchreps[3] = (int) (4 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level3_r13);
case 3:
n1pucchan[2] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[2];
AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level2 shouldn't be NULL\n");
pucchreps[2] = (int) (4 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level2_r13);
case 2:
n1pucchan[1] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[1];
AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level1 shouldn't be NULL\n");
pucchreps[1] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level1_r13);
case 1:
n1pucchan[0] = *pucch_N1PUCCH_AN_InfoList_r13->list.array[0];
AssertFatal (ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13 != NULL, "pucch_NumRepetitionCE_Msg4_Level0 shouldn't be NULL\n");
pucchreps[0] = (int) (1 << *ext4_pucch->pucch_NumRepetitionCE_Msg4_Level0_r13);
break;
default:
AssertFatal (1 == 0, "Illegal count for prach_ParametersListCE_r13 %d\n", prach_ParametersListCE_r13->list.count);
}
}
for (UE_id = UE_info->list.head; UE_id >= 0; UE_id = UE_info->list.next[UE_id]) {
int harq_pid = 0;
rnti = UE_RNTI(module_idP, UE_id);
if (rnti==NOT_A_RNTI) {
continue;
}
ue_sched_ctl = &UE_info->UE_sched_ctrl[UE_id];
UE_template = &UE_info->UE_template[CC_id][UE_id];
if (UE_template->rach_resource_type == 0) {
continue;
}
uint8_t rrc_status = mac_eNB_get_rrc_status(module_idP, rnti);
if (rrc_status < RRC_CONNECTED) {
continue;
}
round_DL = ue_sched_ctl->round[CC_id][harq_pid];
AssertFatal (UE_template->physicalConfigDedicated != NULL, "UE_template->physicalConfigDedicated is null\n");
AssertFatal (UE_template->physicalConfigDedicated->ext4 != NULL, "UE_template->physicalConfigDedicated->ext4 is null\n");
AssertFatal (UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11 != NULL, "UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11 is null\n");
AssertFatal (UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.present == LTE_EPDCCH_Config_r11__config_r11_PR_setup,
"UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.present != setup\n");
AssertFatal (UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.setConfigToAddModList_r11 != NULL,
"UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.setConfigToAddModList_r11 = NULL\n");
LTE_EPDCCH_SetConfig_r11_t *epdcch_setconfig_r11 = UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.setConfigToAddModList_r11->list.array[0];
AssertFatal(epdcch_setconfig_r11 != NULL, "epdcch_setconfig_r11 is null\n");
AssertFatal(epdcch_setconfig_r11->ext2 != NULL, "epdcch_setconfig_r11->ext2 is null\n");
AssertFatal(epdcch_setconfig_r11->ext2->mpdcch_config_r13 != NULL, "epdcch_setconfig_r11->ext2->mpdcch_config_r13 is null");
AssertFatal(epdcch_setconfig_r11->ext2->mpdcch_config_r13 != NULL, "epdcch_setconfig_r11->ext2->mpdcch_config_r13 is null");
AssertFatal(epdcch_setconfig_r11->ext2->mpdcch_config_r13->present == LTE_EPDCCH_SetConfig_r11__ext2__mpdcch_config_r13_PR_setup,
"epdcch_setconfig_r11->ext2->mpdcch_config_r13->present is not setup\n");
AssertFatal(epdcch_setconfig_r11->ext2->numberPRB_Pairs_v1310 != NULL, "epdcch_setconfig_r11->ext2->numberPRB_Pairs_v1310 is null");
AssertFatal(epdcch_setconfig_r11->ext2->numberPRB_Pairs_v1310->present == LTE_EPDCCH_SetConfig_r11__ext2__numberPRB_Pairs_v1310_PR_setup,
"epdcch_setconfig_r11->ext2->numberPRB_Pairs_v1310->present is not setup\n");
/* Simple scheduler for 1 repetition, 1 HARQ */
if (subframeP == 5) { // MPDCCH
if (round_DL < 8) LOG_D(MAC, "MPDCCH round_DL = %d in frame %d subframe %d\n", round_DL, frameP, subframeP);
if (round_DL == 8) {
rlc_status.bytes_in_buffer = 0;
/* Now check RLC information to compute number of required RBs */
/* Get maximum TBS size for RLC request */
TBS = get_TBS_DL(9,6);
/* Check first for RLC data on DCCH */
/* Add the length for all the control elements (timing adv, drx, etc) : header + payload */
if (ue_sched_ctl->ta_timer == 0) {
ta_update = ue_sched_ctl->ta_update;
/* If we send TA then set timer to not send it for a while */
if (ta_update != 31)
ue_sched_ctl->ta_timer = 20;
/* Reset ta_update */
ue_sched_ctl->ta_update = 31;
ue_sched_ctl->ta_update_f = 31.0;
} else {
ta_update = 31;
}
ta_len = (ta_update != 31) ? 2 : 0;
header_len_dcch = 2; // 2 bytes DCCH SDU subheader
if (TBS - ta_len-header_len_dcch > 0 ) {
LOG_D(MAC, "Calling mac_rlc_status_ind for DCCH\n");
rlc_status = mac_rlc_status_ind(module_idP,
rnti,
module_idP,
frameP,
subframeP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
DCCH,
0,
0); // transport block set size
sdu_lengths[0] = 0;
if (rlc_status.bytes_in_buffer > 0) { // There is DCCH to transmit
LOG_D(MAC, "[eNB %d] Frame %d, DL-DCCH->DLSCH CC_id %d, Requesting %d bytes from RLC (RRC message)\n",
module_idP,
frameP,
CC_id,
TBS-header_len_dcch);
sdu_lengths[0] = mac_rlc_data_req(module_idP,
rnti,
module_idP,
frameP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
DCCH,
TBS-ta_len-header_len_dcch,
(char *)&dlsch_buffer[0],
0,
0);
T(T_ENB_MAC_UE_DL_SDU,
T_INT(module_idP),
T_INT(CC_id),
T_INT(rnti),
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_INT(DCCH),
T_INT(sdu_lengths[0]));
LOG_D(MAC,"[eNB %d][DCCH] CC_id %d Got %d bytes from RLC\n",
module_idP,
CC_id,
sdu_lengths[0]);
sdu_length_total = sdu_lengths[0];
sdu_lcids[0] = DCCH;
UE_info->eNB_UE_stats[CC_id][UE_id].num_pdu_tx[DCCH]+=1;
UE_info->eNB_UE_stats[CC_id][UE_id].num_bytes_tx[DCCH]+=sdu_lengths[0];
num_sdus = 1;
} else {
header_len_dcch = 0;
sdu_length_total = 0;
}
}
/* Check for DCCH1 and update header information (assume 2 byte sub-header) */
if (TBS - ta_len-header_len_dcch - sdu_length_total > 0) {
rlc_status = mac_rlc_status_ind(module_idP,
rnti,
module_idP,
frameP,
subframeP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
DCCH + 1,
0,
0); // transport block set size less allocations for timing advance and DCCH SDU
sdu_lengths[num_sdus] = 0;
if (rlc_status.bytes_in_buffer > 0) {
LOG_D(MAC,"[eNB %d], Frame %d, DCCH1->DLSCH, CC_id %d, Requesting %d bytes from RLC (RRC message)\n",
module_idP,
frameP,
CC_id,
TBS-header_len_dcch - sdu_length_total);
sdu_lengths[num_sdus] += mac_rlc_data_req(module_idP,
rnti,
module_idP,
frameP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
DCCH+1,
TBS-ta_len-header_len_dcch-sdu_length_total,
(char *)&dlsch_buffer[sdu_length_total],
0,
0);
T(T_ENB_MAC_UE_DL_SDU,
T_INT(module_idP),
T_INT(CC_id),
T_INT(rnti),
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_INT(DCCH+1),
T_INT(sdu_lengths[num_sdus]));
sdu_lcids[num_sdus] = DCCH1;
sdu_length_total += sdu_lengths[num_sdus];
header_len_dcch += 2;
UE_info->eNB_UE_stats[CC_id][UE_id].num_pdu_tx[DCCH1] += 1;
UE_info->eNB_UE_stats[CC_id][UE_id].num_bytes_tx[DCCH1] += sdu_lengths[num_sdus];
num_sdus++;
}
}
/* Assume the max dtch header size, and adjust it later */
header_len_dtch = 0;
header_len_dtch_last = 0; // the header length of the last mac sdu
/* lcid has to be sorted before the actual allocation (similar struct as ue_list) */
for (lcid = NB_RB_MAX-1; lcid >= DTCH ; lcid--) {
/* TBD: check if the lcid is active */
header_len_dtch += 3;
header_len_dtch_last = 3;
LOG_D(MAC,"[eNB %d], Frame %d, DTCH%d->DLSCH, Checking RLC status (tbs %d, len %d)\n",
module_idP,
frameP,
lcid,
TBS,
TBS - ta_len-header_len_dcch - sdu_length_total - header_len_dtch);
if (TBS - ta_len - header_len_dcch - sdu_length_total - header_len_dtch > 0) { // NN: > 2 ?
rlc_status = mac_rlc_status_ind(module_idP,
rnti,
module_idP,
frameP,
subframeP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
lcid,
0,
0);
if (rlc_status.bytes_in_buffer > 0) {
/* RRC inactivity LTE-M */
/* Reset RRC inactivity timer after uplane activity */
ue_contextP = rrc_eNB_get_ue_context(RC.rrc[module_idP], rnti);
if (ue_contextP != NULL) {
ue_contextP->ue_context.ue_rrc_inactivity_timer = 1;
} else {
LOG_E(MAC, "[eNB %d] CC_id %d Couldn't find the context associated to UE (RNTI %d) and reset RRC inactivity timer\n",
module_idP,
CC_id,
rnti);
}
LOG_D(MAC,"[eNB %d][USER-PLANE DEFAULT DRB] Frame %d : DTCH->DLSCH, Requesting %d bytes from RLC (lcid %d total hdr len %d)\n",
module_idP,
frameP,
TBS - header_len_dcch - sdu_length_total - header_len_dtch,
lcid,
header_len_dtch);
sdu_lengths[num_sdus] = mac_rlc_data_req(module_idP,
rnti,
module_idP,
frameP,
ENB_FLAG_YES,
MBMS_FLAG_NO,
lcid,
TBS - ta_len - header_len_dcch - sdu_length_total - header_len_dtch,
(char *) &dlsch_buffer[sdu_length_total],
0,
0);
T(T_ENB_MAC_UE_DL_SDU,
T_INT(module_idP),
T_INT(CC_id),
T_INT(rnti),
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_INT(lcid),
T_INT(sdu_lengths[num_sdus]));
LOG_D(MAC,"[eNB %d][USER-PLANE DEFAULT DRB] Got %d bytes for DTCH %d \n",
module_idP,
sdu_lengths[num_sdus],
lcid);
sdu_lcids[num_sdus] = lcid;
sdu_length_total += sdu_lengths[num_sdus];
if (sdu_lengths[num_sdus] < 128) {
header_len_dtch--;
header_len_dtch_last--;
}
num_sdus++;
} else { // no data for this LCID
header_len_dtch -= 3;
}
} else { // no TBS left
header_len_dtch -= 3;
break;
}
} // for loop LCID
if (header_len_dtch == 0) {
header_len_dtch_last = 0;
}
/* There is at least one SDU */
if ((sdu_length_total + header_len_dcch + header_len_dtch) > 0) {
/* Now compute number of required RBs for total sdu length */
/* Assume RAH format 2 */
/* Adjust header lengths */
header_len_dcch_tmp = header_len_dcch;
header_len_dtch_tmp = header_len_dtch;
if (header_len_dtch == 0) {
header_len_dcch = (header_len_dcch > 0) ? 1 : 0; // remove length field
} else {
header_len_dtch_last -= 1; // now use it to find how many bytes has to be removed for the last MAC SDU
header_len_dtch = (header_len_dtch > 0) ? header_len_dtch - header_len_dtch_last : header_len_dtch; // remove length field for the last SDU
}
mcs = 9;
/* Decrease mcs until TBS falls below required length */
while ((TBS > (sdu_length_total + header_len_dcch + header_len_dtch + ta_len)) && (mcs>0)) {
mcs--;
TBS = get_TBS_DL(mcs,6);
}
/* If we have decreased too much or we don't have enough RBs, increase MCS */
while (TBS < (sdu_length_total + header_len_dcch + header_len_dtch + ta_len)) {
mcs++;
TBS = get_TBS_DL(mcs,6);
}
LOG_D(MAC, "[eNB %d] CC_id %d Generated DLSCH header (mcs %d, TBS %d, nb_rb %d)\n",
module_idP,
CC_id,
mcs,
TBS,
6);
if ((TBS - header_len_dcch - header_len_dtch - sdu_length_total - ta_len) <= 2) {
padding = (TBS - header_len_dcch - header_len_dtch - sdu_length_total - ta_len);
post_padding = 0;
} else {
padding = 0;
/* Adjust the header len */
if (header_len_dtch == 0) {
header_len_dcch = header_len_dcch_tmp;
} else { // if ((header_len_dcch==0)&&((header_len_dtch==1)||(header_len_dtch==2)))
header_len_dtch = header_len_dtch_tmp;
}
post_padding = TBS - sdu_length_total - header_len_dcch - header_len_dtch - ta_len; // 1 is for the postpadding header
}
offset = generate_dlsch_header((unsigned char *)UE_info->DLSCH_pdu[CC_id][0][UE_id].payload[0],
num_sdus, //num_sdus
sdu_lengths, //
sdu_lcids,
255, // no drx
ta_update, // timing advance
NULL, // contention res id
padding,
post_padding);
if (ta_update != 31) {
LOG_D(MAC,
"[eNB %d][DLSCH] Frame %d Generate header for UE_id %d on CC_id %d: sdu_length_total %d, num_sdus %d, sdu_lengths[0] %d, sdu_lcids[0] %d => payload offset %d,timing advance value : %d, padding %d,post_padding %d,(mcs %d, TBS %d, nb_rb %d),header_dcch %d, header_dtch %d\n",
module_idP,
frameP,
UE_id,
CC_id,
sdu_length_total,
num_sdus,
sdu_lengths[0],
sdu_lcids[0],
offset,
ta_update,
padding,
post_padding,
mcs,
TBS,
6,
header_len_dcch,
header_len_dtch);
}
/* Cycle through SDUs and place in dlsch_buffer */
memcpy(&UE_info->DLSCH_pdu[CC_id][0][UE_id].payload[0][offset], dlsch_buffer, sdu_length_total);
/* Fill remainder of DLSCH with random data */
for (j = 0; j < (TBS - sdu_length_total - offset); j++) {
UE_info->DLSCH_pdu[CC_id][0][UE_id].payload[0][offset + sdu_length_total + j] = (char)(taus()&0xff);
}
ws_trace_t tmp = {.direction = DIRECTION_DOWNLINK,
.pdu_buffer = UE_info->DLSCH_pdu[CC_id][0][UE_id].payload[0],
.pdu_buffer_size = TBS,
.ueid = module_idP,
.rntiType = 3,
.rnti = UE_RNTI(module_idP, UE_id),
.sysFrame = mac->frame,
.subframe = mac->subframe,
.harq_pid = harq_pid};
trace_pdu(&tmp);
T(T_ENB_MAC_UE_DL_PDU_WITH_DATA,
T_INT(module_idP),
T_INT(CC_id),
T_INT(rnti),
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_BUFFER(UE_info->DLSCH_pdu[CC_id][0][UE_id].payload[0], TBS));
/* Do PUCCH power control */
/* This is the snr */
/* unit is not dBm, it's special from nfapi, convert to dBm */
snr = ue_sched_ctl->pucch1_snr[CC_id];
target_snr = mac->puCch10xSnr / 10;
/* This assumes accumulated tpc */
/* Make sure that we are only sending a tpc update once a frame, otherwise the control loop will freak out */
int32_t framex10psubframe = UE_info->UE_template[CC_id][UE_id].pucch_tpc_tx_frame * 10 + UE_info->UE_template[CC_id][UE_id].pucch_tpc_tx_subframe;
if (((framex10psubframe + 10) <= (frameP * 10 + subframeP)) || // normal case
((framex10psubframe > (frameP * 10 + subframeP)) &&
(((10240 - framex10psubframe +frameP * 10 + subframeP) >= 10)))) { // frame wrap-around
if (ue_sched_ctl->pucch1_cqi_update[CC_id] == 1) {
ue_sched_ctl->pucch1_cqi_update[CC_id] = 0;
UE_info->UE_template[CC_id][UE_id].pucch_tpc_tx_frame = frameP;
UE_info->UE_template[CC_id][UE_id].pucch_tpc_tx_subframe = subframeP;
if (snr > target_snr + PUCCH_PCHYST) {
tpc = 0; //-1
} else if (snr < target_snr - PUCCH_PCHYST) {
tpc = 2; //+1
} else {
tpc = 1; //0
}
LOG_D(MAC,"[eNB %d] DLSCH scheduler: frame %d, subframe %d, harq_pid %d, tpc %d, snr/target snr %d/%d\n",
module_idP,
frameP,
subframeP,
harq_pid,
tpc,
snr,
target_snr);
} else { // Po_PUCCH has been updated
tpc = 1; // 0
}
} else { // time to do TPC update
tpc = 1; //0
}
// Toggle NDI in first round
UE_template->oldNDI[harq_pid] = 1 - UE_template->oldNDI[harq_pid];
ue_sched_ctl->round[CC_id][harq_pid] = 0;
round_DL = 0;
} // if ((sdu_length_total + header_len_dcch + header_len_dtch) > 0)
}
if (round_DL < 8) {
/* Fill in MDPDCCH */
memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_mpdcch_pdu));
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_format = (UE_template->rach_resource_type > 1) ? 11 : 10;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_narrow_band = epdcch_setconfig_r11->ext2->mpdcch_config_r13->choice.setup.mpdcch_Narrowband_r13-1;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_prb_pairs = 6;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_assignment = 0; // Note: this can be dynamic
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mpdcch_tansmission_type = epdcch_setconfig_r11->transmissionType_r11;
AssertFatal(UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.startSymbol_r11 != NULL,
"UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.startSymbol_r11 is null\n");
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.start_symbol = *UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.startSymbol_r11;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ecce_index = 0; // Note: this should be dynamic
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.aggregation_level = 24; // OK for CEModeA r1-3 (9.1.5-1b) or CEModeB r1-4
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti_type = 4; // t-CRNTI
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.rnti = rnti;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.ce_mode = (UE_template->rach_resource_type < 3) ? 1 : 2;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.drms_scrambling_init = epdcch_setconfig_r11->dmrs_ScramblingSequenceInt_r11;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.initial_transmission_sf_io = (frameP * 10) + subframeP;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.transmission_power = 6000; // 0dB
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.resource_block_coding = getRIV (6, 0, 6) | ((epdcch_setconfig_r11->ext2->mpdcch_config_r13->choice.setup.mpdcch_Narrowband_r13-1)<<5);
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs = mcs; // adjust according to size of RAR, 208 bits with N1A_PRB=3
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pdsch_reptition_levels = 0; // fix to 4 for now
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.redundancy_version = rvseq[round_DL&3];
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.new_data_indicator = UE_template->oldNDI[harq_pid];
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_process = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi_length = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpmi = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.pmi = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.harq_resource_offset = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.dci_subframe_repetition_number = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.tpc = 3;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index_length = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.downlink_assignment_index = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.allocate_prach_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.preamble_index = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.prach_mask_index = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.starting_ce_level = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.srs_request = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.antenna_ports_and_scrambling_identity = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.frequency_hopping_enabled_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.paging_direct_indication_differentiation_flag = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.direct_indication = 0;
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.total_dci_length_including_padding = 0; // this is not needed by OAI L1, but should be filled in
dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.number_of_tx_antenna_ports = 1;
dl_req->number_pdu++;
UE_template->mcs[harq_pid] = dl_config_pdu->mpdcch_pdu.mpdcch_pdu_rel13.mcs;
}
} else if ((subframeP == 7) && (round_DL < 8)) { // DLSCH
LOG_D(MAC, "DLSCH round_DL = %d in frame %d subframe %d\n", round_DL, frameP, subframeP);
int absSF = (frameP * 10) + subframeP;
/* Have to check that MPDCCH was generated */
LOG_D(MAC, "[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Generating DLSCH (ce_level %d RNTI %x)\n",
module_idP,
CC_id,
frameP,
subframeP,
UE_template->rach_resource_type - 1,
rnti);
first_rb = narrowband_to_first_rb(&cc[CC_id], epdcch_setconfig_r11->ext2->mpdcch_config_r13->choice.setup.mpdcch_Narrowband_r13 - 1);
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
memset ((void *) dl_config_pdu, 0, sizeof (nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_dl_config_dlsch_pdu));
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = mac->pdu_index[CC_id];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = rnti;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2; // format 1A/1B/1D
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV (to_prb (cc[CC_id].mib->message.dl_Bandwidth), first_rb, 6); // check that this isn't getRIV(6,0,6)
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1; // first block
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc[CC_id].p_eNB == 1) ? 0 : 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1;
// dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.codebook_index = ;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize (cc[CC_id].mib->message.dl_Bandwidth); // ignored
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc[CC_id].p_eNB == 1) ? 1 : 2;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
// dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.bf_vector = ;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = *UE_template->physicalConfigDedicated->ext4->epdcch_Config_r11->config_r11.choice.setup.startSymbol_r11;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = (UE_template->rach_resource_type < 3) ? 1 : 2;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2; // not SI message
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = (10 * frameP) + subframeP;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.drms_table_flag = 0;
dl_req->number_pdu++;
// DL request
mac->TX_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
TX_req = &mac->TX_req[CC_id].tx_request_body.tx_pdu_list[mac->TX_req[CC_id].tx_request_body.number_of_pdus];
TX_req->pdu_length = get_TBS_DL(UE_template->mcs[harq_pid], 6);
TX_req->pdu_index = mac->pdu_index[CC_id]++;
TX_req->num_segments = 1;
TX_req->segments[0].segment_length = TX_req->pdu_length;
TX_req->segments[0].segment_data = mac->UE_info.DLSCH_pdu[CC_id][0][(unsigned char) UE_id].payload[0];
mac->TX_req[CC_id].tx_request_body.number_of_pdus++;
ackNAK_absSF = absSF + 4;
ul_req = &mac->UL_req_tmp[CC_id][ackNAK_absSF % 10].ul_config_request_body;
ul_config_pdu = &ul_req->ul_config_pdu_list[ul_req->number_of_pdus];
ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE;
ul_config_pdu->pdu_size = (uint8_t) (2 + sizeof (nfapi_ul_config_uci_harq_pdu));
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.handle = 0; // don't know how to use this
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.rnti = rnti;
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.ue_type = (UE_template->rach_resource_type < 3) ? 1 : 2;
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.empty_symbols = 0;
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.total_number_of_repetitions = pucchreps[UE_template->rach_resource_type - 1];
ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel13.repetition_number = 0;
if (cc[CC_id].tdd_Config == NULL) { // FDD case
ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.n_pucch_1_0 = n1pucchan[UE_template->rach_resource_type - 1];
// NOTE: How to fill in the rest of the n_pucch_1_0 information 213 Section 10.1.2.1 in the general case
// = N_ECCE_q + Delta_ARO + n1pucchan[ce_level]
// higher in the MPDCCH configuration, N_ECCE_q is hard-coded to 0, and harq resource offset to 0 =>
// Delta_ARO = 0 from Table 10.1.2.1-1
ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.harq_size = 1; // 1-bit ACK/NAK
ul_config_pdu->uci_harq_pdu.harq_information.harq_information_rel9_fdd.number_of_pucch_resources = 1;
} else {
AssertFatal (1 == 0, "PUCCH configuration for ACK/NAK not handled yet for TDD BL/CE case\n");
}
ul_req->number_of_pdus++;
T(T_ENB_MAC_UE_DL_PDU_WITH_DATA,
T_INT (module_idP),
T_INT (CC_id),
T_INT (rnti),
T_INT (frameP),
T_INT (subframeP),
T_INT (0 /* harq_pid always 0? */ ),
T_BUFFER (&mac->UE_info.DLSCH_pdu[CC_id][0][UE_id].payload[0], TX_req->pdu_length));
ws_trace_t tmp = {.direction = 1,
.pdu_buffer = mac->UE_info.DLSCH_pdu[CC_id][0][UE_id].payload[0],
.pdu_buffer_size = TX_req->pdu_length,
.ueid = UE_id,
.rntiType = 3,
.rnti = rnti,
.sysFrame = frameP,
.subframe = subframeP};
trace_pdu(&tmp);
} // end else if ((subframeP == 7) && (round_DL < 8))
} // end loop on UE_id
}
//------------------------------------------------------------------------------
unsigned char *get_dlsch_sdu(module_id_t module_idP,
int CC_id,
frame_t frameP,
rnti_t rntiP,
uint8_t TBindex)
//------------------------------------------------------------------------------
{
int UE_id;
eNB_MAC_INST *eNB = RC.mac[module_idP];
if (rntiP == SI_RNTI) {
LOG_D(MAC, "[eNB %d] CC_id %d Frame %d Get DLSCH sdu for BCCH \n",
module_idP,
CC_id,
frameP);
return ((unsigned char *) &eNB->common_channels[CC_id].BCCH_pdu.payload[0]);
}
if (rntiP == P_RNTI) {
LOG_D(MAC, "[eNB %d] CC_id %d Frame %d Get PCH sdu for PCCH \n",
module_idP,
CC_id,
frameP);
return ((unsigned char *) &eNB->common_channels[CC_id].PCCH_pdu.payload[0]);
}
UE_id = find_UE_id(module_idP, rntiP);
if (UE_id != -1) {
LOG_D(MAC, "[eNB %d] Frame %d: CC_id %d Get DLSCH sdu for rnti %x => UE_id %d\n",
module_idP,
frameP,
CC_id,
rntiP,
UE_id);
return ((unsigned char *) &eNB->UE_info.DLSCH_pdu[CC_id][TBindex][UE_id].payload[0]);
}
LOG_E(MAC, "[eNB %d] Frame %d: CC_id %d UE with RNTI %x does not exist\n",
module_idP,
frameP,
CC_id,
rntiP);
return NULL;
}
//------------------------------------------------------------------------------
void
update_ul_dci(module_id_t module_idP,
uint8_t CC_idP,
rnti_t rntiP,
uint8_t daiP,
sub_frame_t subframe)
//------------------------------------------------------------------------------
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc = &eNB->common_channels[CC_idP];
if (cc->tdd_Config != NULL) { // TDD
nfapi_hi_dci0_request_t *HI_DCI0_req = &eNB->HI_DCI0_req[CC_idP][subframe];
nfapi_hi_dci0_request_pdu_t *hi_dci0_pdu = &HI_DCI0_req->hi_dci0_request_body.hi_dci0_pdu_list[0];
int limit = HI_DCI0_req->hi_dci0_request_body.number_of_dci + HI_DCI0_req->hi_dci0_request_body.number_of_hi;
for (int i = 0; i < limit; i++, hi_dci0_pdu++) {
if (hi_dci0_pdu->pdu_type == NFAPI_HI_DCI0_DCI_PDU_TYPE && hi_dci0_pdu->dci_pdu.dci_pdu_rel8.rnti == rntiP)
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dl_assignment_index = (daiP - 1) & 3;
}
}
return;
}
//------------------------------------------------------------------------------
void
set_ue_dai(sub_frame_t subframeP,
int UE_id,
uint8_t CC_id,
uint8_t tdd_config,
UE_info_t *UE_info)
//------------------------------------------------------------------------------
{
switch (tdd_config) {
case 0:
if (subframeP == 0 || subframeP == 1 || subframeP == 3 || subframeP == 5 || subframeP == 6 || subframeP == 8) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
case 1:
if (subframeP == 0 || subframeP == 4 || subframeP == 5 || subframeP == 9) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
case 2:
if (subframeP == 4 || subframeP == 5) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
case 3:
if (subframeP == 5 || subframeP == 7 || subframeP == 9) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
case 4:
if (subframeP == 0 || subframeP == 6) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
case 5:
if (subframeP == 9) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
case 6:
if (subframeP == 0 || subframeP == 1 || subframeP == 5 || subframeP == 6 || subframeP == 9) {
UE_info->UE_template[CC_id][UE_id].DAI = 0;
}
break;
default:
UE_info->UE_template[CC_id][UE_id].DAI = 0;
LOG_I(MAC, "unknown TDD config %d\n",
tdd_config);
break;
}
return;
}
void
schedule_PCH(module_id_t module_idP,
frame_t frameP,
sub_frame_t subframeP) {
/* DCI:format 1A/1C P-RNTI:0xFFFE */
/* PDU:eNB_rrc_inst[Mod_idP].common_channels[CC_id].PCCH_pdu.payload */
uint16_t pcch_sdu_length;
int mcs = -1;
int CC_id;
eNB_MAC_INST *eNB = RC.mac[module_idP];
COMMON_channels_t *cc;
uint8_t *vrb_map;
int n_rb_dl;
int first_rb = -1;
nfapi_dl_config_request_pdu_t *dl_config_pdu;
nfapi_tx_request_pdu_t *TX_req;
nfapi_dl_config_request_body_t *dl_req;
UE_PF_PO_t *ue_pf_po;
#ifdef FORMAT1C
int gap_index = 0; /* indicate which gap(1st or 2nd) is used (0:1st) */
const int GAP_MAP [9][2] = {
{-1, 0}, /* N_RB_DL [6-10] -1: |N_RB/2| 0: N/A*/
{4, 0}, /* N_RB_DL [11] */
{8, 0}, /* N_RB_DL [12-19] */
{12, 0}, /* N_RB_DL [20-26] */
{18, 0}, /* N_RB_DL [27-44] */
{27, 0}, /* N_RB_DL [45-49] */
{27, 9}, /* N_RB_DL [50-63] */
{32, 16}, /* N_RB_DL [64-79] */
{48, 16} /* N_RB_DL [80-110] */
};
uint8_t n_rb_step = 0;
uint8_t n_gap = 0;
uint8_t n_vrb_dl = 0;
uint8_t Lcrbs = 0;
uint16_t rb_bit = 168; /* RB bit number value is unsure */
#endif
start_meas(&eNB->schedule_pch);
for (CC_id = 0; CC_id < RC.nb_mac_CC[module_idP]; CC_id++) {
cc = &eNB->common_channels[CC_id];
vrb_map = (void *) &cc->vrb_map;
n_rb_dl = to_prb(cc->mib->message.dl_Bandwidth);
dl_req = &eNB->DL_req[CC_id].dl_config_request_body;
for (uint16_t i = 0; i < MAX_MOBILES_PER_ENB; i++) {
ue_pf_po = &UE_PF_PO[CC_id][i];
if (ue_pf_po->enable_flag != true) {
continue;
}
if (frameP % ue_pf_po->T == ue_pf_po->PF_min && subframeP == ue_pf_po->PO) {
pcch_sdu_length = mac_rrc_data_req(module_idP,
CC_id,
frameP,
PCCH,
0xFFFE,
1,
&cc->PCCH_pdu.payload[0],
i); // used for ue index
if (pcch_sdu_length == 0) {
LOG_D(MAC, "[eNB %d] Frame %d subframe %d: PCCH not active(size = 0 byte)\n",
module_idP,
frameP,
subframeP);
continue;
}
LOG_D(MAC, "[eNB %d] Frame %d subframe %d: PCCH->PCH CC_id %d UE_id %d, Received %d bytes \n",
module_idP,
frameP,
subframeP,
CC_id,
i,
pcch_sdu_length);
#ifdef FORMAT1C
//NO SIB
if ((subframeP == 0 || subframeP == 1 || subframeP == 2 || subframeP == 4 || subframeP == 6 || subframeP == 9) ||
(subframeP == 5 && ((frameP % 2) != 0 && (frameP % 8) != 1))) {
switch (n_rb_dl) {
case 25:
n_gap = GAP_MAP[3][0]; /* expect: 12 */
n_vrb_dl = 2*((n_gap < (n_rb_dl - n_gap)) ? n_gap : (n_rb_dl - n_gap)); /* expect: 24 */
first_rb = 10;
break;
case 50:
n_gap = GAP_MAP[6][gap_index]; /* expect: 27 or 9 */
if (gap_index > 0) {
n_vrb_dl = (n_rb_dl / (2*n_gap)) * (2*n_gap); /* 36 */
} else {
n_vrb_dl = 2*((n_gap < (n_rb_dl - n_gap)) ? n_gap : (n_rb_dl - n_gap)); /* expect: 46 */
}
first_rb = 24;
break;
case 100:
n_gap = GAP_MAP[8][gap_index]; /* expect: 48 or 16 */
if (gap_index > 0) {
n_vrb_dl = (n_rb_dl / (2*n_gap)) * (2*n_gap); /* expect: 96 */
} else {
n_vrb_dl = 2*((n_gap < (n_rb_dl - n_gap)) ? n_gap : (n_rb_dl - n_gap)); /* expect: 96 */
}
first_rb = 48;
break;
}
} else if (subframeP == 5 && ((frameP % 2) == 0 || (frameP % 8) == 1)) { // SIB + paging
switch (n_rb_dl) {
case 25:
n_gap = GAP_MAP[3][0]; /* expect: 12 */
n_vrb_dl = 2*((n_gap < (n_rb_dl - n_gap)) ? n_gap : (n_rb_dl - n_gap)); /* expect: 24 */
first_rb = 14;
break;
case 50:
n_gap = GAP_MAP[6][gap_index]; /* expect: 27 or 9 */
if (gap_index > 0) {
n_vrb_dl = (n_rb_dl / (2*n_gap)) * (2*n_gap); /* 36 */
} else {
n_vrb_dl = 2*((n_gap < (n_rb_dl - n_gap)) ? n_gap : (n_rb_dl - n_gap)); /* expect: 46 */
}
first_rb = 28;
break;
case 100:
n_gap = GAP_MAP[8][gap_index]; /* expect: 48 or 16 */
if (gap_index > 0) {
n_vrb_dl = (n_rb_dl / (2*n_gap)) * (2*n_gap); /* expect: 96 */
} else {
n_vrb_dl = 2*((n_gap < (n_rb_dl - n_gap)) ? n_gap : (n_rb_dl - n_gap)); /* expect: 96 */
}
first_rb = 52;
break;
}
}
/* Get MCS for length of PCH */
if (pcch_sdu_length <= TBStable1C[0]) {
mcs=0;
} else if (pcch_sdu_length <= TBStable1C[1]) {
mcs=1;
} else if (pcch_sdu_length <= TBStable1C[2]) {
mcs=2;
} else if (pcch_sdu_length <= TBStable1C[3]) {
mcs=3;
} else if (pcch_sdu_length <= TBStable1C[4]) {
mcs=4;
} else if (pcch_sdu_length <= TBStable1C[5]) {
mcs=5;
} else if (pcch_sdu_length <= TBStable1C[6]) {
mcs=6;
} else if (pcch_sdu_length <= TBStable1C[7]) {
mcs=7;
} else if (pcch_sdu_length <= TBStable1C[8]) {
mcs=8;
} else if (pcch_sdu_length <= TBStable1C[9]) {
mcs=9;
} else {
/* unexpected: pcch sdb size is over max value*/
LOG_E(MAC,"[eNB %d] Frame %d : PCCH->PCH CC_id %d, Received %d bytes is over max length(256) \n",
module_idP,
frameP,
CC_id,
pcch_sdu_length);
return;
}
rb_num = TBStable1C[mcs] / rb_bit + ( (TBStable1C[mcs] % rb_bit == 0)? 0: 1) + 1;
/* calculate N_RB_STEP and Lcrbs */
if (n_rb_dl < 50) {
n_rb_step = 2;
Lcrbs = rb_num / 2 + ((rb_num % 2 == 0) ? 0:2);
} else {
n_rb_step = 4;
Lcrbs = rb_num / 4 + ((rb_num % 4 == 0) ? 0:4);
}
for(i = 0; i < Lcrbs ; i++) {
vrb_map[first_rb+i] = 1;
}
#else
//NO SIB
if ((subframeP == 0 || subframeP == 1 || subframeP == 2 || subframeP == 4 || subframeP == 6 || subframeP == 9) ||
(subframeP == 5 && ((frameP % 2) != 0 && (frameP % 8) != 1))) {
switch (n_rb_dl) {
case 25:
first_rb = 10;
break;
case 50:
first_rb = 24;
break;
case 100:
first_rb = 48;
break;
}
} else if (subframeP == 5 && ((frameP % 2) == 0 || (frameP % 8) == 1)) { // SIB + paging
switch (n_rb_dl) {
case 25:
first_rb = 14;
break;
case 50:
first_rb = 28;
break;
case 100:
first_rb = 52;
break;
}
}
vrb_map[first_rb] = 1;
vrb_map[first_rb + 1] = 1;
vrb_map[first_rb + 2] = 1;
vrb_map[first_rb + 3] = 1;
/* Get MCS for length of PCH */
if (pcch_sdu_length <= get_TBS_DL(0, 3)) {
mcs = 0;
} else if (pcch_sdu_length <= get_TBS_DL(1, 3)) {
mcs = 1;
} else if (pcch_sdu_length <= get_TBS_DL(2, 3)) {
mcs = 2;
} else if (pcch_sdu_length <= get_TBS_DL(3, 3)) {
mcs = 3;
} else if (pcch_sdu_length <= get_TBS_DL(4, 3)) {
mcs = 4;
} else if (pcch_sdu_length <= get_TBS_DL(5, 3)) {
mcs = 5;
} else if (pcch_sdu_length <= get_TBS_DL(6, 3)) {
mcs = 6;
} else if (pcch_sdu_length <= get_TBS_DL(7, 3)) {
mcs = 7;
} else if (pcch_sdu_length <= get_TBS_DL(8, 3)) {
mcs = 8;
} else if (pcch_sdu_length <= get_TBS_DL(9, 3)) {
mcs = 9;
}
#endif
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
memset((void *) dl_config_pdu,
0,
sizeof(nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu));
#ifdef FORMAT1C
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1C;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = getRIV(n_vrb_dl/n_rb_step, first_rb/n_rb_step, Lcrbs/n_rb_step);
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.ngap = n_gap;
#else
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1A;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.harq_process = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tpc = 1; // no TPC
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.new_data_indicator_1 = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.redundancy_version_1 = 0;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = getRIV(n_rb_dl, first_rb, 4);
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.virtual_resource_block_assignment_flag = 0;
#endif
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level = 4;
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = 0xFFFE; // P-RNTI
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 2; // P-RNTI : see Table 4-10 from SCF082 - nFAPI specifications
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1 = mcs;
if (!CCE_allocation_infeasible(module_idP,
CC_id,
0,
subframeP,
dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level,
P_RNTI)) {
LOG_D(MAC,"Frame %d: Subframe %d : Adding common DCI for P_RNTI\n",
frameP,
subframeP);
dl_req->number_dci++;
dl_req->number_pdu++;
dl_req->tl.tag = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
eNB->DL_req[CC_id].sfn_sf = frameP<<4 | subframeP;
eNB->DL_req[CC_id].header.message_id = NFAPI_DL_CONFIG_REQUEST;
dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
memset((void *)dl_config_pdu,
0,
sizeof(nfapi_dl_config_request_pdu_t));
dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DLSCH_PDU_TYPE;
dl_config_pdu->pdu_size = (uint8_t)(2 + sizeof(nfapi_dl_config_dlsch_pdu));
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index = eNB->pdu_index[CC_id];
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti = 0xFFFE;
#ifdef FORMAT1C
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 3; // format 1C
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(n_vrb_dl / n_rb_step,
first_rb / n_rb_step,
Lcrbs / n_rb_step);
#else
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type = 2; // format 1A/1B/1D
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding = getRIV(n_rb_dl,
first_rb,
4);
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0; // localized
#endif
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation = 2; //QPSK
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.redundancy_version = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_blocks = 1;// first block
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transport_block_to_codeword_swap_flag = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_scheme = (cc->p_eNB==1 ) ? 0 : 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_layers = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.number_of_subbands = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ue_category_capacity = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pa = 4; // 0 dB
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.delta_power_offset_index = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.ngap = 0;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.nprb = get_subbandsize(cc->mib->message.dl_Bandwidth); // ignored
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.transmission_mode = (cc->p_eNB==1 ) ? 1 : 2;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_prb_per_subband = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.num_bf_vector = 1;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel10.pdsch_start = 3;
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.ue_type = 0; // regular UE
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.pdsch_payload_type = 2; // not BR
dl_config_pdu->dlsch_pdu.dlsch_pdu_rel13.initial_transmission_sf_io = 0xFFFF;
dl_req->number_pdu++;
eNB->TX_req[CC_id].sfn_sf = (frameP<<4)+subframeP;
TX_req = &eNB->TX_req[CC_id].tx_request_body.tx_pdu_list[eNB->TX_req[CC_id].tx_request_body.number_of_pdus];
TX_req->pdu_length = pcch_sdu_length;
TX_req->pdu_index = eNB->pdu_index[CC_id]++;
TX_req->num_segments = 1;
TX_req->segments[0].segment_length = pcch_sdu_length;
TX_req->segments[0].segment_data = cc[CC_id].PCCH_pdu.payload;
eNB->TX_req[CC_id].tx_request_body.tl.tag = NFAPI_TX_REQUEST_BODY_TAG;
eNB->TX_req[CC_id].tx_request_body.number_of_pdus++;
} else {
LOG_E(MAC,"[eNB %d] CCid %d Frame %d, subframe %d : Cannot add DCI 1A/1C for Paging\n",
module_idP,
CC_id,
frameP,
subframeP);
continue;
}
ws_trace_t tmp = {.direction = DIRECTION_DOWNLINK,
.pdu_buffer = eNB->common_channels[CC_id].PCCH_pdu.payload,
.pdu_buffer_size = pcch_sdu_length,
.ueid = 0xffff,
.rntiType = PCCH,
.rnti = P_RNTI,
.sysFrame = eNB->frame,
.subframe = eNB->subframe};
trace_pdu(&tmp);
eNB->eNB_stats[CC_id].total_num_pcch_pdu++;
eNB->eNB_stats[CC_id].pcch_buffer = pcch_sdu_length;
eNB->eNB_stats[CC_id].total_pcch_buffer += pcch_sdu_length;
eNB->eNB_stats[CC_id].pcch_mcs = mcs;
//paging first_rb log
LOG_D(MAC,"[eNB %d] Frame %d subframe %d PCH: paging_ue_index %d pcch_sdu_length %d mcs %d first_rb %d\n",
module_idP,
frameP,
subframeP,
ue_pf_po->ue_index_value,
pcch_sdu_length,
mcs,
first_rb);
pthread_mutex_lock(&ue_pf_po_mutex);
memset(ue_pf_po,
0,
sizeof(UE_PF_PO_t));
pthread_mutex_unlock(&ue_pf_po_mutex);
}
}
}
/* this might be misleading when pcch is inactive */
stop_meas(&eNB->schedule_pch);
return;
}
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