/*
* 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 1.0 (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 flexran_agent_scheduler_dlsch_ue.c
* \brief procedures related to eNB for the DLSCH transport channel
* \author Xenofon Foukas, Navid Nikaein and Raymond Knopp
* \date 2016
* \email: x.foukas@sms.ed.ac.uk
* \version 0.1
* @ingroup _mac
*/
#include "assertions.h"
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"
#include "LAYER2/MAC/flexran_agent_mac_proto.h"
#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/proto.h"
#include "LAYER2/MAC/extern.h"
#include "UTIL/LOG/log.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "RRC/LITE/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "ENB_APP/flexran_agent_defs.h"
#include "pdcp.h"
#include "header.pb-c.h"
#include "flexran.pb-c.h"
#include "flexran_agent_mac.h"
#include <dlfcn.h>
#include "SIMULATION/TOOLS/defs.h" // for taus
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif
#define ENABLE_MAC_PAYLOAD_DEBUG
/**
* Local variables to support slicing
*
*/
/*!\brief UE ULSCH scheduling states*/
typedef enum {
MIN_SLICE_STRATEGY = 0,
SLICE_MASK,
UEID_TO_SLICEID,
MAX_SLICE_STRATEGY
} SLICING_STRATEGY;
// this assumes a max of of 16 UE per eNB/CC
#define SLICE0_MASK 0x000f
#define SLICE1_MASK 0x00f0
#define SLICE2_MASK 0x0f00
#define SLICE3_MASK 0xf000
// number of active slices for past and current time
int n_active_slices = 1;
int n_active_slices_current = 1;
// ue to slice mapping
int slicing_strategy = UEID_TO_SLICEID;
int slicing_strategy_current = UEID_TO_SLICEID;
// RB share for each slice for past and current time
float slice_percentage[MAX_NUM_SLICES] = {1.0, 0.0, 0.0, 0.0};
float slice_percentage_current[MAX_NUM_SLICES] = {1.0, 0.0, 0.0, 0.0};
float total_slice_percentage = 0;
// MAX MCS for each slice for past and current time
int slice_maxmcs[MAX_NUM_SLICES] = {28, 28, 28, 28};
int slice_maxmcs_current[MAX_NUM_SLICES] = {28, 28, 28, 28};
int update_dl_scheduler[MAX_NUM_SLICES] = {1, 1, 1, 1};
int update_dl_scheduler_current[MAX_NUM_SLICES] = {1, 1, 1, 1};
// name of available scheduler
char *dl_scheduler_type[MAX_NUM_SLICES] = {"flexran_schedule_ue_spec_embb",
"flexran_schedule_ue_spec_urllc",
"flexran_schedule_ue_spec_mmtc",
"flexran_schedule_ue_spec_be" // best effort
};
// pointer to the slice specific scheduler
slice_scheduler slice_sched[MAX_NUM_SLICES] = {0};
/**
* preprocessor functions for scheduling
*
*/
// This function stores the downlink buffer for all the logical channels
void _store_dlsch_buffer (module_id_t Mod_id,
int slice_id,
frame_t frameP,
sub_frame_t subframeP)
{
int UE_id,i;
rnti_t rnti;
mac_rlc_status_resp_t rlc_status;
UE_list_t *UE_list = &eNB_mac_inst[Mod_id].UE_list;
UE_TEMPLATE *UE_template;
for (UE_id = 0; UE_id < NUMBER_OF_UE_MAX; UE_id++) {
if (UE_list->active[UE_id] != TRUE) continue;
if (flexran_slice_member(UE_id, slice_id) == 0)
continue;
UE_template = &UE_list->UE_template[UE_PCCID(Mod_id,UE_id)][UE_id];
// clear logical channel interface variables
UE_template->dl_buffer_total = 0;
UE_template->dl_pdus_total = 0;
for(i=0; i< MAX_NUM_LCID; i++) {
UE_template->dl_buffer_info[i]=0;
UE_template->dl_pdus_in_buffer[i]=0;
UE_template->dl_buffer_head_sdu_creation_time[i]=0;
UE_template->dl_buffer_head_sdu_remaining_size_to_send[i]=0;
}
rnti = UE_RNTI(Mod_id,UE_id);
for(i=0; i< MAX_NUM_LCID; i++) { // loop over all the logical channels
rlc_status = mac_rlc_status_ind(Mod_id,rnti, Mod_id,frameP,ENB_FLAG_YES,MBMS_FLAG_NO,i,0 );
UE_template->dl_buffer_info[i] = rlc_status.bytes_in_buffer; //storing the dlsch buffer for each logical channel
UE_template->dl_pdus_in_buffer[i] = rlc_status.pdus_in_buffer;
UE_template->dl_buffer_head_sdu_creation_time[i] = rlc_status.head_sdu_creation_time ;
UE_template->dl_buffer_head_sdu_creation_time_max = cmax(UE_template->dl_buffer_head_sdu_creation_time_max,
rlc_status.head_sdu_creation_time );
UE_template->dl_buffer_head_sdu_remaining_size_to_send[i] = rlc_status.head_sdu_remaining_size_to_send;
UE_template->dl_buffer_head_sdu_is_segmented[i] = rlc_status.head_sdu_is_segmented;
UE_template->dl_buffer_total += UE_template->dl_buffer_info[i];//storing the total dlsch buffer
UE_template->dl_pdus_total += UE_template->dl_pdus_in_buffer[i];
#ifdef DEBUG_eNB_SCHEDULER
/* note for dl_buffer_head_sdu_remaining_size_to_send[i] :
* 0 if head SDU has not been segmented (yet), else remaining size not already segmented and sent
*/
if (UE_template->dl_buffer_info[i]>0)
LOG_D(MAC,
"[eNB %d][SLICE %d] Frame %d Subframe %d : RLC status for UE %d in LCID%d: total of %d pdus and size %d, head sdu queuing time %d, remaining size %d, is segmeneted %d \n",
Mod_id, slice_id,frameP, subframeP, UE_id,
i, UE_template->dl_pdus_in_buffer[i],UE_template->dl_buffer_info[i],
UE_template->dl_buffer_head_sdu_creation_time[i],
UE_template->dl_buffer_head_sdu_remaining_size_to_send[i],
UE_template->dl_buffer_head_sdu_is_segmented[i]
);
#endif
}
//#ifdef DEBUG_eNB_SCHEDULER
if ( UE_template->dl_buffer_total>0)
LOG_D(MAC,"[eNB %d] Frame %d Subframe %d : RLC status for UE %d : total DL buffer size %d and total number of pdu %d \n",
Mod_id, frameP, subframeP, UE_id,
UE_template->dl_buffer_total,
UE_template->dl_pdus_total
);
//#endif
}
}
// This function returns the estimated number of RBs required by each UE for downlink scheduling
void _assign_rbs_required (module_id_t Mod_id,
int slice_id,
frame_t frameP,
sub_frame_t subframe,
uint16_t nb_rbs_required[MAX_NUM_CCs][NUMBER_OF_UE_MAX],
uint16_t nb_rbs_allowed_slice[MAX_NUM_CCs][MAX_NUM_SLICES],
int min_rb_unit[MAX_NUM_CCs])
{
rnti_t rnti;
uint16_t TBS = 0;
LTE_eNB_UE_stats *eNB_UE_stats[MAX_NUM_CCs];
int UE_id,n,i,j,CC_id,pCCid,tmp;
UE_list_t *UE_list = &eNB_mac_inst[Mod_id].UE_list;
// UE_TEMPLATE *UE_template;
// clear rb allocations across all CC_ids
for (UE_id = 0; UE_id < NUMBER_OF_UE_MAX; UE_id++) {
if (UE_list->active[UE_id] != TRUE) continue;
if (flexran_slice_member(UE_id, slice_id) == 0)
continue;
pCCid = UE_PCCID(Mod_id,UE_id);
rnti = UE_list->UE_template[pCCid][UE_id].rnti;
/* skip UE not present in PHY (for any of its active CCs) */
if (!phy_stats_exist(Mod_id, rnti))
continue;
//update CQI information across component carriers
for (n=0; n<UE_list->numactiveCCs[UE_id]; n++) {
CC_id = UE_list->ordered_CCids[n][UE_id];
eNB_UE_stats[CC_id] = mac_xface->get_eNB_UE_stats(Mod_id,CC_id,rnti);
eNB_UE_stats[CC_id]->dlsch_mcs1 = cqi_to_mcs[flexran_get_ue_wcqi(Mod_id, UE_id)];
}
// provide the list of CCs sorted according to MCS
for (i=0; i<UE_list->numactiveCCs[UE_id]; i++) {
for (j=i+1; j<UE_list->numactiveCCs[UE_id]; j++) {
DevAssert( j < MAX_NUM_CCs );
if (eNB_UE_stats[UE_list->ordered_CCids[i][UE_id]]->dlsch_mcs1 >
eNB_UE_stats[UE_list->ordered_CCids[j][UE_id]]->dlsch_mcs1) {
tmp = UE_list->ordered_CCids[i][UE_id];
UE_list->ordered_CCids[i][UE_id] = UE_list->ordered_CCids[j][UE_id];
UE_list->ordered_CCids[j][UE_id] = tmp;
}
}
}
/* NN --> RK
* check the index of UE_template"
*/
if (UE_list->UE_template[pCCid][UE_id].dl_buffer_total> 0) {
LOG_D(MAC,"[preprocessor] assign RB for UE %d\n",UE_id);
for (i=0; i<UE_list->numactiveCCs[UE_id]; i++) {
CC_id = UE_list->ordered_CCids[i][UE_id];
eNB_UE_stats[CC_id] = mac_xface->get_eNB_UE_stats(Mod_id,CC_id,rnti);
if (cqi_to_mcs[flexran_get_ue_wcqi(Mod_id, UE_id)] == 0) {//eNB_UE_stats[CC_id]->dlsch_mcs1==0) {
nb_rbs_required[CC_id][UE_id] = 4; // don't let the TBS get too small
} else {
nb_rbs_required[CC_id][UE_id] = min_rb_unit[CC_id];
}
TBS = mac_xface->get_TBS_DL(cqi_to_mcs[flexran_get_ue_wcqi(Mod_id, UE_id)], nb_rbs_required[CC_id][UE_id]);
nb_rbs_allowed_slice[CC_id][slice_id] = flexran_nb_rbs_allowed_slice(slice_percentage[slice_id],
flexran_get_N_RB_DL(Mod_id, CC_id));
LOG_D(MAC,"[preprocessor] start RB assignement for UE %d CC_id %d dl buffer %d (RB unit %d, MCS %d, TBS %d) \n",
UE_id, CC_id, UE_list->UE_template[pCCid][UE_id].dl_buffer_total,
nb_rbs_required[CC_id][UE_id], flexran_get_ue_wcqi(Mod_id, UE_id), TBS);
/* calculating required number of RBs for each UE */
while (TBS < UE_list->UE_template[pCCid][UE_id].dl_buffer_total) {
nb_rbs_required[CC_id][UE_id] += min_rb_unit[CC_id];
if (nb_rbs_required[CC_id][UE_id] > nb_rbs_allowed_slice[CC_id][slice_id]) {
TBS = mac_xface->get_TBS_DL(flexran_get_ue_wcqi(Mod_id, UE_id), nb_rbs_allowed_slice[CC_id][slice_id]);
nb_rbs_required[CC_id][UE_id] = nb_rbs_allowed_slice[CC_id][slice_id];
break;
}
TBS = mac_xface->get_TBS_DL(cqi_to_mcs[flexran_get_ue_wcqi(Mod_id, UE_id)], nb_rbs_required[CC_id][UE_id]);
} // end of while
LOG_D(MAC,"[eNB %d][SLICE %d] Frame %d: UE %d on CC %d: RB unit %d, nb_required RB %d (TBS %d, mcs %d)\n",
Mod_id, slice_id,frameP,UE_id, CC_id, min_rb_unit[CC_id], nb_rbs_required[CC_id][UE_id], TBS, cqi_to_mcs[flexran_get_ue_wcqi(Mod_id, UE_id)]);
}
}
}
}
void _dlsch_scheduler_pre_processor_allocate (module_id_t Mod_id,
int UE_id,
uint8_t CC_id,
int N_RBG,
int transmission_mode,
int min_rb_unit,
uint8_t N_RB_DL,
uint16_t nb_rbs_required[MAX_NUM_CCs][NUMBER_OF_UE_MAX],
uint16_t nb_rbs_required_remaining[MAX_NUM_CCs][NUMBER_OF_UE_MAX],
unsigned char rballoc_sub[MAX_NUM_CCs][N_RBG_MAX],
unsigned char MIMO_mode_indicator[MAX_NUM_CCs][N_RBG_MAX]) {
int i;
UE_list_t *UE_list=&eNB_mac_inst[Mod_id].UE_list;
UE_sched_ctrl *ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
for(i=0; i<N_RBG; i++) {
if((rballoc_sub[CC_id][i] == 0) &&
(ue_sched_ctl->rballoc_sub_UE[CC_id][i] == 0) &&
(nb_rbs_required_remaining[CC_id][UE_id]>0) &&
(ue_sched_ctl->pre_nb_available_rbs[CC_id] < nb_rbs_required[CC_id][UE_id])) {
// if this UE is not scheduled for TM5
if (ue_sched_ctl->dl_pow_off[CC_id] != 0 ) {
if ((i == N_RBG-1) && ((N_RB_DL == 25) || (N_RB_DL == 50))) {
rballoc_sub[CC_id][i] = 1;
ue_sched_ctl->rballoc_sub_UE[CC_id][i] = 1;
MIMO_mode_indicator[CC_id][i] = 1;
if (transmission_mode == 5 ) {
ue_sched_ctl->dl_pow_off[CC_id] = 1;
}
nb_rbs_required_remaining[CC_id][UE_id] = nb_rbs_required_remaining[CC_id][UE_id] - min_rb_unit+1;
ue_sched_ctl->pre_nb_available_rbs[CC_id] = ue_sched_ctl->pre_nb_available_rbs[CC_id] + min_rb_unit - 1;
} else {
if (nb_rbs_required_remaining[CC_id][UE_id] >= min_rb_unit){
rballoc_sub[CC_id][i] = 1;
ue_sched_ctl->rballoc_sub_UE[CC_id][i] = 1;
MIMO_mode_indicator[CC_id][i] = 1;
if (transmission_mode == 5 ) {
ue_sched_ctl->dl_pow_off[CC_id] = 1;
}
nb_rbs_required_remaining[CC_id][UE_id] = nb_rbs_required_remaining[CC_id][UE_id] - min_rb_unit;
ue_sched_ctl->pre_nb_available_rbs[CC_id] = ue_sched_ctl->pre_nb_available_rbs[CC_id] + min_rb_unit;
}
}
} // dl_pow_off[CC_id][UE_id] ! = 0
}
}
}
void _dlsch_scheduler_pre_processor_reset (int module_idP,
int UE_id,
uint8_t CC_id,
int frameP,
int subframeP,
int N_RBG,
uint16_t nb_rbs_required[MAX_NUM_CCs][NUMBER_OF_UE_MAX],
uint16_t nb_rbs_required_remaining[MAX_NUM_CCs][NUMBER_OF_UE_MAX],
uint16_t nb_rbs_allowed_slice[MAX_NUM_CCs][MAX_NUM_SLICES],
unsigned char rballoc_sub[MAX_NUM_CCs][N_RBG_MAX],
unsigned char MIMO_mode_indicator[MAX_NUM_CCs][N_RBG_MAX]) {
int i,j;
UE_list_t *UE_list=&eNB_mac_inst[module_idP].UE_list;
UE_sched_ctrl *ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
uint8_t *vrb_map = eNB_mac_inst[module_idP].common_channels[CC_id].vrb_map;
int RBGsize = PHY_vars_eNB_g[module_idP][CC_id]->frame_parms.N_RB_DL/N_RBG;
#ifdef SF05_LIMIT
//int subframe05_limit=0;
int sf05_upper=-1,sf05_lower=-1;
#endif
// LTE_eNB_UE_stats *eNB_UE_stats = mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti);
flexran_update_TA(module_idP, UE_id, CC_id);
if (UE_id==0) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_TIMING_ADVANCE,ue_sched_ctl->ta_update);
}
nb_rbs_required[CC_id][UE_id]=0;
ue_sched_ctl->pre_nb_available_rbs[CC_id] = 0;
ue_sched_ctl->dl_pow_off[CC_id] = 2;
nb_rbs_required_remaining[CC_id][UE_id] = 0;
for (i=0; i<n_active_slices;i++)
nb_rbs_allowed_slice[CC_id][i] = 0;
#ifdef SF05_LIMIT
switch (N_RBG) {
case 6:
sf05_lower=0;
sf05_upper=5;
break;
case 8:
sf05_lower=2;
sf05_upper=5;
break;
case 13:
sf05_lower=4;
sf05_upper=7;
break;
case 17:
sf05_lower=7;
sf05_upper=9;
break;
case 25:
sf05_lower=11;
sf05_upper=13;
break;
}
#endif
// Initialize Subbands according to VRB map
for (i=0; i<N_RBG; i++) {
ue_sched_ctl->rballoc_sub_UE[CC_id][i] = 0;
rballoc_sub[CC_id][i] = 0;
#ifdef SF05_LIMIT
// for avoiding 6+ PRBs around DC in subframe 0-5 (avoid excessive errors)
if ((subframeP==0 || subframeP==5) &&
(i>=sf05_lower && i<=sf05_upper))
rballoc_sub[CC_id][i]=1;
#endif
// for SI-RNTI,RA-RNTI and P-RNTI allocations
for (j=0;j<RBGsize;j++) {
if (vrb_map[j+(i*RBGsize)]!=0) {
rballoc_sub[CC_id][i] = 1;
LOG_D(MAC,"Frame %d, subframe %d : vrb %d allocated\n",frameP,subframeP,j+(i*RBGsize));
break;
}
}
LOG_D(MAC,"Frame %d Subframe %d CC_id %d RBG %i : rb_alloc %d\n",frameP,subframeP,CC_id,i,rballoc_sub[CC_id][i]);
MIMO_mode_indicator[CC_id][i] = 2;
}
}
// This function assigns pre-available RBS to each UE in specified sub-bands before scheduling is done
void _dlsch_scheduler_pre_processor (module_id_t Mod_id,
int slice_id,
frame_t frameP,
sub_frame_t subframeP,
int N_RBG[MAX_NUM_CCs],
int *mbsfn_flag)
{
unsigned char rballoc_sub[MAX_NUM_CCs][N_RBG_MAX], total_ue_count;
unsigned char MIMO_mode_indicator[MAX_NUM_CCs][N_RBG_MAX];
int UE_id, i;
uint8_t round = 0;
uint8_t harq_pid = 0;
uint16_t ii,j;
uint16_t nb_rbs_required[MAX_NUM_CCs][NUMBER_OF_UE_MAX];
uint16_t nb_rbs_allowed_slice[MAX_NUM_CCs][MAX_NUM_SLICES];
uint16_t nb_rbs_required_remaining[MAX_NUM_CCs][NUMBER_OF_UE_MAX];
uint16_t nb_rbs_required_remaining_1[MAX_NUM_CCs][NUMBER_OF_UE_MAX];
uint16_t average_rbs_per_user[MAX_NUM_CCs] = {0};
rnti_t rnti;
int min_rb_unit[MAX_NUM_CCs];
uint16_t r1=0;
uint8_t CC_id;
UE_list_t *UE_list = &eNB_mac_inst[Mod_id].UE_list;
LTE_DL_FRAME_PARMS *frame_parms[MAX_NUM_CCs] = {0};
int transmission_mode = 0;
UE_sched_ctrl *ue_sched_ctl;
for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
if (mbsfn_flag[CC_id]>0) // If this CC is allocated for MBSFN skip it here
continue;
frame_parms[CC_id] = mac_xface->get_lte_frame_parms(Mod_id,CC_id);
min_rb_unit[CC_id]=get_min_rb_unit(Mod_id,CC_id);
for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
if (UE_list->active[i] != TRUE) continue;
UE_id = i;
// Initialize scheduling information for all active UEs
//if (flexran_slice_member(UE_id, slice_id) == 0)
//continue;
_dlsch_scheduler_pre_processor_reset(Mod_id,
UE_id,
CC_id,
frameP,
subframeP,
N_RBG[CC_id],
nb_rbs_required,
nb_rbs_required_remaining,
nb_rbs_allowed_slice,
rballoc_sub,
MIMO_mode_indicator);
}
}
// Store the DLSCH buffer for each logical channel
_store_dlsch_buffer (Mod_id,slice_id,frameP,subframeP);
// Calculate the number of RBs required by each UE on the basis of logical channel's buffer
_assign_rbs_required (Mod_id,slice_id, frameP,subframeP,nb_rbs_required,nb_rbs_allowed_slice,min_rb_unit);
// Sorts the user on the basis of dlsch logical channel buffer and CQI
sort_UEs (Mod_id,frameP,subframeP);
total_ue_count = 0;
// loop over all active UEs
for (i=UE_list->head; i>=0; i=UE_list->next[i]) {
rnti = flexran_get_ue_crnti(Mod_id, i);
if(rnti == NOT_A_RNTI)
continue;
if (UE_list->UE_sched_ctrl[i].ul_out_of_sync == 1)
continue;
UE_id = i;
if (flexran_slice_member(UE_id, slice_id) == 0)
continue;
if (!phy_stats_exist(Mod_id, rnti))
continue;
for (ii=0; ii < UE_num_active_CC(UE_list,UE_id); ii++) {
CC_id = UE_list->ordered_CCids[ii][UE_id];
ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
ue_sched_ctl->max_allowed_rbs[CC_id]=nb_rbs_allowed_slice[CC_id][slice_id];
flexran_get_harq(Mod_id, CC_id, UE_id, frameP, subframeP, &harq_pid, &round);
// if there is no available harq_process, skip the UE
if (UE_list->UE_sched_ctrl[UE_id].harq_pid[CC_id]<0)
continue;
average_rbs_per_user[CC_id]=0;
frame_parms[CC_id] = mac_xface->get_lte_frame_parms(Mod_id,CC_id);
// mac_xface->get_ue_active_harq_pid(Mod_id,CC_id,rnti,frameP,subframeP,&harq_pid,&round,0);
if(round>0) {
nb_rbs_required[CC_id][UE_id] = UE_list->UE_template[CC_id][UE_id].nb_rb[harq_pid];
}
//nb_rbs_required_remaining[UE_id] = nb_rbs_required[UE_id];
if (nb_rbs_required[CC_id][UE_id] > 0) {
total_ue_count = total_ue_count + 1;
}
// hypotetical assignement
/*
* If schedule is enabled and if the priority of the UEs is modified
* The average rbs per logical channel per user will depend on the level of
* priority. Concerning the hypothetical assignement, we should assign more
* rbs to prioritized users. Maybe, we can do a mapping between the
* average rbs per user and the level of priority or multiply the average rbs
* per user by a coefficient which represents the degree of priority.
*/
if (total_ue_count == 0) {
average_rbs_per_user[CC_id] = 0;
} else if( (min_rb_unit[CC_id] * total_ue_count) <= nb_rbs_allowed_slice[CC_id][slice_id] ) {
average_rbs_per_user[CC_id] = (uint16_t) floor(nb_rbs_allowed_slice[CC_id][slice_id]/total_ue_count);
} else {
average_rbs_per_user[CC_id] = min_rb_unit[CC_id]; // consider the total number of use that can be scheduled UE
}
}
}
// note: nb_rbs_required is assigned according to total_buffer_dl
// extend nb_rbs_required to capture per LCID RB required
for(i=UE_list->head; i>=0; i=UE_list->next[i]) {
rnti = UE_RNTI(Mod_id,i);
if(rnti == NOT_A_RNTI)
continue;
if (UE_list->UE_sched_ctrl[i].ul_out_of_sync == 1)
continue;
if (!phy_stats_exist(Mod_id, rnti))
continue;
if (flexran_slice_member(i, slice_id) == 0)
continue;
for (ii=0; ii<UE_num_active_CC(UE_list,i); ii++) {
CC_id = UE_list->ordered_CCids[ii][i];
// control channel
if (mac_eNB_get_rrc_status(Mod_id,rnti) < RRC_RECONFIGURED) {
nb_rbs_required_remaining_1[CC_id][i] = nb_rbs_required[CC_id][i];
} else {
nb_rbs_required_remaining_1[CC_id][i] = cmin(average_rbs_per_user[CC_id],nb_rbs_required[CC_id][i]);
}
}
}
//Allocation to UEs is done in 2 rounds,
// 1st stage: average number of RBs allocated to each UE
// 2nd stage: remaining RBs are allocated to high priority UEs
for(r1=0; r1<2; r1++) {
for(i=UE_list->head; i>=0; i=UE_list->next[i]) {
if (flexran_slice_member(i, slice_id) == 0)
continue;
for (ii=0; ii<UE_num_active_CC(UE_list,i); ii++) {
CC_id = UE_list->ordered_CCids[ii][i];
if(r1 == 0) {
nb_rbs_required_remaining[CC_id][i] = nb_rbs_required_remaining_1[CC_id][i];
} else { // rb required based only on the buffer - rb allloctaed in the 1st round + extra reaming rb form the 1st round
nb_rbs_required_remaining[CC_id][i] = nb_rbs_required[CC_id][i]-nb_rbs_required_remaining_1[CC_id][i]+nb_rbs_required_remaining[CC_id][i];
}
if (nb_rbs_required[CC_id][i]> 0 )
LOG_D(MAC,"round %d : nb_rbs_required_remaining[%d][%d]= %d (remaining_1 %d, required %d, pre_nb_available_rbs %d, N_RBG %d, rb_unit %d)\n",
r1, CC_id, i,
nb_rbs_required_remaining[CC_id][i],
nb_rbs_required_remaining_1[CC_id][i],
nb_rbs_required[CC_id][i],
UE_list->UE_sched_ctrl[i].pre_nb_available_rbs[CC_id],
N_RBG[CC_id],
min_rb_unit[CC_id]);
}
}
if (total_ue_count > 0 ) {
for(i=UE_list->head; i>=0; i=UE_list->next[i]) {
UE_id = i;
if (flexran_slice_member(UE_id, slice_id) == 0)
continue;
for (ii=0; ii<UE_num_active_CC(UE_list,UE_id); ii++) {
CC_id = UE_list->ordered_CCids[ii][UE_id];
ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
flexran_get_harq(Mod_id, CC_id, UE_id, frameP, subframeP, &harq_pid, &round);
rnti = UE_RNTI(Mod_id,UE_id);
// LOG_D(MAC,"UE %d rnti 0x\n", UE_id, rnti );
if(rnti == NOT_A_RNTI)
continue;
if (UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync == 1)
continue;
if (!phy_stats_exist(Mod_id, rnti))
continue;
transmission_mode = mac_xface->get_transmission_mode(Mod_id,CC_id,rnti);
//rrc_status = mac_eNB_get_rrc_status(Mod_id,rnti);
/* 1st allocate for the retx */
// retransmission in data channels
// control channel in the 1st transmission
// data channel for all TM
LOG_T(MAC,"calling dlsch_scheduler_pre_processor_allocate .. \n ");
_dlsch_scheduler_pre_processor_allocate (Mod_id,
UE_id,
CC_id,
N_RBG[CC_id],
transmission_mode,
min_rb_unit[CC_id],
frame_parms[CC_id]->N_RB_DL,
nb_rbs_required,
nb_rbs_required_remaining,
rballoc_sub,
MIMO_mode_indicator);
}
}
} // total_ue_count
} // end of for for r1 and r2
for(i=UE_list->head; i>=0; i=UE_list->next[i]) {
UE_id = i;
ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
if (flexran_slice_member(UE_id, slice_id) == 0)
continue;
for (ii=0; ii<UE_num_active_CC(UE_list,UE_id); ii++) {
CC_id = UE_list->ordered_CCids[ii][UE_id];
//PHY_vars_eNB_g[Mod_id]->mu_mimo_mode[UE_id].dl_pow_off = dl_pow_off[UE_id];
if (ue_sched_ctl->pre_nb_available_rbs[CC_id] > 0 ) {
LOG_D(MAC,"******************DL Scheduling Information for UE%d ************************\n",UE_id);
LOG_D(MAC,"dl power offset UE%d = %d \n",UE_id,ue_sched_ctl->dl_pow_off[CC_id]);
LOG_D(MAC,"***********RB Alloc for every subband for UE%d ***********\n",UE_id);
for(j=0; j<N_RBG[CC_id]; j++) {
//PHY_vars_eNB_g[Mod_id]->mu_mimo_mode[UE_id].rballoc_sub[i] = rballoc_sub_UE[CC_id][UE_id][i];
LOG_D(MAC,"RB Alloc for UE%d and Subband%d = %d\n",UE_id,j,ue_sched_ctl->rballoc_sub_UE[CC_id][j]);
}
//PHY_vars_eNB_g[Mod_id]->mu_mimo_mode[UE_id].pre_nb_available_rbs = pre_nb_available_rbs[CC_id][UE_id];
LOG_D(MAC,"[eNB %d][SLICE %d] Total RBs allocated for UE%d = %d\n",
Mod_id, slice_id, UE_id,ue_sched_ctl->pre_nb_available_rbs[CC_id]);
}
}
}
}
#define SF05_LIMIT 1
/*
* Main scheduling functions to support slicing
*
*/
void
flexran_schedule_ue_spec_default(mid_t mod_id,
uint32_t frame,
uint32_t subframe,
int *mbsfn_flag,
Protocol__FlexranMessage **dl_info)
//------------------------------------------------------------------------------
{
int i=0;
flexran_agent_mac_create_empty_dl_config(mod_id, dl_info);
for (i = 0; i < n_active_slices; i++) {
// Load any updated functions
if (update_dl_scheduler[i] > 0 ) {
slice_sched[i] = dlsym(NULL, dl_scheduler_type[i]);
update_dl_scheduler[i] = 0;
update_dl_scheduler_current[i] = 0;
slice_percentage_current[i]= slice_percentage[i];
total_slice_percentage+=slice_percentage[i];
LOG_N(MAC,"update dl scheduler slice %d\n", i);
}
// check if the number of slices has changed, and log
if (n_active_slices_current != n_active_slices ){
if ((n_active_slices > 0) && (n_active_slices <= MAX_NUM_SLICES)) {
LOG_N(MAC,"[eNB %d]frame %d subframe %d: number of active slices has changed: %d-->%d\n",
mod_id, frame, subframe, n_active_slices_current, n_active_slices);
n_active_slices_current = n_active_slices;
} else {
LOG_W(MAC,"invalid number of slices %d, revert to the previous value %d\n",n_active_slices, n_active_slices_current);
n_active_slices = n_active_slices_current;
}
}
// check if the slice rb share has changed, and log the console
if (slice_percentage_current[i] != slice_percentage[i]){
if ((slice_percentage[i] >= 0.0) && (slice_percentage[i] <= 1.0)){
if ((total_slice_percentage - slice_percentage_current[i] + slice_percentage[i]) <= 1.0) {
total_slice_percentage=total_slice_percentage - slice_percentage_current[i] + slice_percentage[i];
LOG_N(MAC,"[eNB %d][SLICE %d] frame %d subframe %d: total percentage %f, slice RB percentage has changed: %f-->%f\n",
mod_id, i, frame, subframe, total_slice_percentage, slice_percentage_current[i], slice_percentage[i]);
slice_percentage_current[i] = slice_percentage[i];
} else {
LOG_W(MAC,"[eNB %d][SLICE %d] invalid total RB share (%f->%f), revert the previous value (%f->%f)\n",
mod_id,i,
total_slice_percentage,
total_slice_percentage - slice_percentage_current[i] + slice_percentage[i],
slice_percentage[i],slice_percentage_current[i]);
slice_percentage[i]= slice_percentage_current[i];
}
} else {
LOG_W(MAC,"[eNB %d][SLICE %d] invalid slice RB share, revert the previous value (%f->%f)\n",mod_id, i, slice_percentage[i],slice_percentage_current[i]);
slice_percentage[i]= slice_percentage_current[i];
}
}
// check if the slice max MCS, and log the console
if (slice_maxmcs_current[i] != slice_maxmcs[i]){
if ((slice_maxmcs[i] >= 0) && (slice_maxmcs[i] < 29)){
LOG_N(MAC,"[eNB %d][SLICE %d] frame %d subframe %d: slice MAX MCS has changed: %d-->%d\n",
mod_id, i, frame, subframe, slice_maxmcs_current[i], slice_maxmcs[i]);
slice_maxmcs_current[i] = slice_maxmcs[i];
} else {
LOG_W(MAC,"[eNB %d][SLICE %d] invalid slice max mcs %d, revert the previous value %d\n",mod_id, i, slice_percentage[i],slice_percentage[i]);
slice_maxmcs[i]= slice_maxmcs_current[i];
}
}
// check if a new scheduler, and log the console
if (update_dl_scheduler_current[i] != update_dl_scheduler[i]){
LOG_N(MAC,"[eNB %d][SLICE %d] frame %d subframe %d: DL scheduler for this slice is updated: %s \n",
mod_id, i, frame, subframe, dl_scheduler_type[i]);
update_dl_scheduler_current[i] = update_dl_scheduler[i];
}
// Run each enabled slice-specific schedulers one by one
//LOG_N(MAC,"[eNB %d]frame %d subframe %d slice %d: calling the scheduler\n", mod_id, frame, subframe,i);
slice_sched[i](mod_id, i, frame, subframe, mbsfn_flag,dl_info);
}
}
uint16_t flexran_nb_rbs_allowed_slice(float rb_percentage, int total_rbs){
return (uint16_t) floor(rb_percentage * total_rbs);
}
int flexran_slice_maxmcs(int slice_id) {
return slice_maxmcs[slice_id];
}
int flexran_slice_member(int UE_id, int slice_id){
// group membership definition
int slice_member = 0 ;
if ((slice_id < 0) || (slice_id > n_active_slices))
LOG_W(MAC,"out of range slice id %d\n",slice_id);
switch (slicing_strategy) {
case SLICE_MASK:
switch (slice_id){
case 0:
if (SLICE0_MASK&UE_id){
slice_member=1;
}
break;
case 1:
if (SLICE1_MASK&UE_id){
slice_member=1;
}
break;
case 2:
if (SLICE2_MASK&UE_id){
slice_member=1;
}
break;
case 3:
if (SLICE3_MASK&UE_id){
slice_member=1;
}
break;
default :
LOG_W(MAC,"unknown slice_id %d\n", slice_id);
break;
}
break;
case UEID_TO_SLICEID:
default:
if ((UE_id % n_active_slices) == slice_id){
slice_member= 1; // this ue is a member of this slice
}
break;
}
return slice_member;
}
/* more aggressive rb and mcs allocation with medium priority and the traffic qci */
void
flexran_schedule_ue_spec_embb(mid_t mod_id,
int slice_id,
uint32_t frame,
uint32_t subframe,
int *mbsfn_flag,
Protocol__FlexranMessage **dl_info)
{
flexran_schedule_ue_spec_common(mod_id,
slice_id,
frame,
subframe,
mbsfn_flag,
dl_info);
}
/* more conservative mcs allocation with high priority and the traffic qci */
void
flexran_schedule_ue_spec_urllc(mid_t mod_id,
int slice_id,
uint32_t frame,
uint32_t subframe,
int *mbsfn_flag,
Protocol__FlexranMessage **dl_info)
{
flexran_schedule_ue_spec_common(mod_id,
slice_id,
frame,
subframe,
mbsfn_flag,
dl_info);
}
/* constant rb allocation with low mcs with low priority and given the UE capabilities */
void
flexran_schedule_ue_spec_mmtc(mid_t mod_id,
int slice_id,
uint32_t frame,
uint32_t subframe,
int *mbsfn_flag,
Protocol__FlexranMessage **dl_info)
{
flexran_schedule_ue_spec_common(mod_id,
slice_id,
frame,
subframe,
mbsfn_flag,
dl_info);
}
/* regular rb and mcs allocation with low priority */
void
flexran_schedule_ue_spec_be(mid_t mod_id,
int slice_id,
uint32_t frame,
uint32_t subframe,
int *mbsfn_flag,
Protocol__FlexranMessage **dl_info)
{
flexran_schedule_ue_spec_common(mod_id,
slice_id,
frame,
subframe,
mbsfn_flag,
dl_info);
}
//------------------------------------------------------------------------------
void
flexran_schedule_ue_spec_common(mid_t mod_id,
int slice_id,
uint32_t frame,
uint32_t subframe,
int *mbsfn_flag,
Protocol__FlexranMessage **dl_info)
//------------------------------------------------------------------------------
{
uint8_t CC_id;
int UE_id;
int N_RBG[MAX_NUM_CCs];
unsigned char aggregation;
mac_rlc_status_resp_t rlc_status;
unsigned char header_len = 0, header_len_last = 0, ta_len = 0;
uint16_t nb_rb, nb_rb_temp, total_nb_available_rb[MAX_NUM_CCs], nb_available_rb;
uint16_t TBS, j, rnti;
uint8_t round = 0;
uint8_t harq_pid = 0;
uint16_t sdu_length_total = 0;
int mcs, mcs_tmp;
uint16_t min_rb_unit[MAX_NUM_CCs];
eNB_MAC_INST *eNB = &eNB_mac_inst[mod_id];
/* TODO: Must move the helper structs to scheduler implementation */
UE_list_t *UE_list = &eNB->UE_list;
int32_t normalized_rx_power, target_rx_power;
int32_t tpc = 1;
static int32_t tpc_accumulated=0;
UE_sched_ctrl *ue_sched_ctl;
LTE_eNB_UE_stats *eNB_UE_stats = NULL;
Protocol__FlexDlData *dl_data[NUM_MAX_UE];
int num_ues_added = 0;
int channels_added = 0;
Protocol__FlexDlDci *dl_dci;
Protocol__FlexRlcPdu *rlc_pdus[11];
uint32_t ce_flags = 0;
uint8_t rballoc_sub[25];
int i;
uint32_t data_to_request;
uint32_t dci_tbs;
uint8_t ue_has_transmission = 0;
uint32_t ndi;
#if 0
if (UE_list->head==-1) {
return;
}
#endif
start_meas(&eNB->schedule_dlsch);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_SCHEDULE_DLSCH,VCD_FUNCTION_IN);
//weight = get_ue_weight(module_idP,UE_id);
aggregation = 1; // set to the maximum aggregation level
for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
min_rb_unit[CC_id] = get_min_rb_unit(mod_id, CC_id);
// get number of PRBs less those used by common channels
total_nb_available_rb[CC_id] = flexran_get_N_RB_DL(mod_id, CC_id);
for (i=0;i < flexran_get_N_RB_DL(mod_id, CC_id); i++)
if (eNB->common_channels[CC_id].vrb_map[i] != 0)
total_nb_available_rb[CC_id]--;
N_RBG[CC_id] = flexran_get_N_RBG(mod_id, CC_id);
// store the global enb stats:
eNB->eNB_stats[CC_id].num_dlactive_UEs = UE_list->num_UEs;
eNB->eNB_stats[CC_id].available_prbs = total_nb_available_rb[CC_id];
eNB->eNB_stats[CC_id].total_available_prbs += total_nb_available_rb[CC_id];
eNB->eNB_stats[CC_id].dlsch_bytes_tx=0;
eNB->eNB_stats[CC_id].dlsch_pdus_tx=0;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_PREPROCESSOR,VCD_FUNCTION_IN);
start_meas(&eNB->schedule_dlsch_preprocessor);
_dlsch_scheduler_pre_processor(mod_id,
slice_id,
frame,
subframe,
N_RBG,
mbsfn_flag);
stop_meas(&eNB->schedule_dlsch_preprocessor);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_PREPROCESSOR,VCD_FUNCTION_OUT);
for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
LOG_D(MAC, "doing schedule_ue_spec for CC_id %d\n",CC_id);
if (mbsfn_flag[CC_id]>0)
continue;
for (UE_id=UE_list->head; UE_id>=0; UE_id=UE_list->next[UE_id]) {
rnti = flexran_get_ue_crnti(mod_id, UE_id);
ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
if (flexran_slice_member(UE_id, slice_id) == 0)
continue;
if (rnti==NOT_A_RNTI) {
LOG_D(MAC,"Cannot find rnti for UE_id %d (num_UEs %d)\n", UE_id,UE_list->num_UEs);
// mac_xface->macphy_exit("Cannot find rnti for UE_id");
continue;
}
if ((ue_sched_ctl->pre_nb_available_rbs[CC_id] == 0) ) {
continue;
}
if (CCE_allocation_infeasible(mod_id, CC_id, 0, subframe, aggregation, rnti)) {
LOG_D(MAC,"[eNB %d] Frame %d : no RB allocated for UE %d on CC_id %d: continue \n",
mod_id, frame, UE_id, CC_id);
//if(mac_xface->get_transmission_mode(module_idP,rnti)==5)
continue; //to next user (there might be rbs availiable for other UEs in TM5
// else
// break;
}
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
set_ue_dai (subframe,
flexran_get_subframe_assignment(mod_id, CC_id),
UE_id,
CC_id,
UE_list);
//TODO: update UL DAI after DLSCH scheduling
//set_ul_DAI(mod_id, UE_id, CC_id, frame, subframe,frame_parms);
}
channels_added = 0;
// After this point all the UEs will be scheduled
dl_data[num_ues_added] = (Protocol__FlexDlData *) malloc(sizeof(Protocol__FlexDlData));
protocol__flex_dl_data__init(dl_data[num_ues_added]);
dl_data[num_ues_added]->has_rnti = 1;
dl_data[num_ues_added]->rnti = rnti;
dl_data[num_ues_added]->n_rlc_pdu = 0;
dl_data[num_ues_added]->has_serv_cell_index = 1;
dl_data[num_ues_added]->serv_cell_index = CC_id;
nb_available_rb = ue_sched_ctl->pre_nb_available_rbs[CC_id];
flexran_get_harq(mod_id, CC_id, UE_id, frame, subframe, &harq_pid, &round);
sdu_length_total=0;
mcs = cqi_to_mcs[flexran_get_ue_wcqi(mod_id, UE_id)];
// LOG_I(FLEXRAN_AGENT, "The MCS is %d\n", mcs);
mcs = cmin(mcs,flexran_slice_maxmcs(slice_id));
#ifdef EXMIMO
if (mac_xface->get_transmission_mode(mod_id, CC_id, rnti) == 5) {
mcs = cqi_to_mcs[flexran_get_ue_wcqi(mod_id, UE_id)];
mcs = cmin(mcs,16);
}
#endif
// initializing the rb allocation indicator for each UE
for(j = 0; j < flexran_get_N_RBG(mod_id, CC_id); j++) {
UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j] = 0;
rballoc_sub[j] = 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", */
/* mod_id, frame, UE_id, CC_id, rnti, harq_pid, round, nb_available_rb, */
/* eNB_UE_stats->DL_cqi[0], mcs, */
/* UE_list->eNB_UE_stats[CC_id][UE_id].rrc_status); */
dl_dci = (Protocol__FlexDlDci*) malloc(sizeof(Protocol__FlexDlDci));
protocol__flex_dl_dci__init(dl_dci);
dl_data[num_ues_added]->dl_dci = dl_dci;
dl_dci->has_rnti = 1;
dl_dci->rnti = rnti;
dl_dci->has_harq_process = 1;
dl_dci->harq_process = harq_pid;
/* process retransmission */
if (round > 0) {
LOG_D(FLEXRAN_AGENT, "There was a retransmission just now and the round was %d\n", round);
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
UE_list->UE_template[CC_id][UE_id].DAI++;
update_ul_dci(mod_id, CC_id, rnti, UE_list->UE_template[CC_id][UE_id].DAI);
LOG_D(MAC,"DAI update: CC_id %d subframeP %d: UE %d, DAI %d\n",
CC_id, subframe,UE_id,UE_list->UE_template[CC_id][UE_id].DAI);
}
mcs = UE_list->UE_template[CC_id][UE_id].mcs[harq_pid];
// get freq_allocation
nb_rb = UE_list->UE_template[CC_id][UE_id].nb_rb[harq_pid];
/*TODO: Must add this to FlexRAN agent API */
dci_tbs = mac_xface->get_TBS_DL(mcs, nb_rb);
if (nb_rb <= nb_available_rb) {
if(nb_rb == ue_sched_ctl->pre_nb_available_rbs[CC_id]) {
for(j = 0; j < flexran_get_N_RBG(mod_id, CC_id); j++) { // for indicating the rballoc for each sub-band
UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j] = ue_sched_ctl->rballoc_sub_UE[CC_id][j];
}
} else {
nb_rb_temp = nb_rb;
j = 0;
while((nb_rb_temp > 0) && (j < flexran_get_N_RBG(mod_id, CC_id))) {
if(ue_sched_ctl->rballoc_sub_UE[CC_id][j] == 1) {
UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j] = ue_sched_ctl->rballoc_sub_UE[CC_id][j];
if((j == flexran_get_N_RBG(mod_id, CC_id) - 1) &&
((flexran_get_N_RB_DL(mod_id, CC_id) == 25)||
(flexran_get_N_RB_DL(mod_id, CC_id) == 50))) {
nb_rb_temp = nb_rb_temp - min_rb_unit[CC_id]+1;
} else {
nb_rb_temp = nb_rb_temp - min_rb_unit[CC_id];
}
}
j = j + 1;
}
}
nb_available_rb -= nb_rb;
aggregation = process_ue_cqi(mod_id, UE_id);
PHY_vars_eNB_g[mod_id][CC_id]->mu_mimo_mode[UE_id].pre_nb_available_rbs = nb_rb;
PHY_vars_eNB_g[mod_id][CC_id]->mu_mimo_mode[UE_id].dl_pow_off = ue_sched_ctl->dl_pow_off[CC_id];
for(j=0; j < flexran_get_N_RBG(mod_id, CC_id); j++) {
PHY_vars_eNB_g[mod_id][CC_id]->mu_mimo_mode[UE_id].rballoc_sub[j] = UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j];
rballoc_sub[j] = UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j];
}
// Keep the old NDI, do not toggle
ndi = UE_list->UE_template[CC_id][UE_id].oldNDI[harq_pid];
tpc = UE_list->UE_template[CC_id][UE_id].oldTPC[harq_pid];
UE_list->UE_template[CC_id][UE_id].mcs[harq_pid] = mcs;
ue_has_transmission = 1;
num_ues_added++;
} else {
LOG_D(MAC,"[eNB %d] Frame %d CC_id %d : don't schedule UE %d, its retransmission takes more resources than we have\n",
mod_id, frame, CC_id, UE_id);
ue_has_transmission = 0;
}
//End of retransmission
} else { /* This is a potentially new SDU opportunity */
rlc_status.bytes_in_buffer = 0;
// Now check RLC information to compute number of required RBs
// get maximum TBS size for RLC request
//TBS = mac_xface->get_TBS(eNB_UE_stats->DL_cqi[0]<<1,nb_available_rb);
TBS = mac_xface->get_TBS_DL(mcs, nb_available_rb);
dci_tbs = TBS;
LOG_D(FLEXRAN_AGENT, "TBS is %d\n", TBS);
// check first for RLC data on DCCH
// add the length for all the control elements (timing adv, drx, etc) : header + payload
ta_len = (ue_sched_ctl->ta_update != 0) ? 2 : 0;
dl_data[num_ues_added]->n_ce_bitmap = 2;
dl_data[num_ues_added]->ce_bitmap = (uint32_t *) calloc(2, sizeof(uint32_t));
if (ta_len > 0) {
ce_flags |= PROTOCOL__FLEX_CE_TYPE__FLPCET_TA;
}
/*TODO: Add other flags if DRX and other CE are required*/
// Add the control element flags to the flexran message
dl_data[num_ues_added]->ce_bitmap[0] = ce_flags;
dl_data[num_ues_added]->ce_bitmap[1] = ce_flags;
// TODO : Need to prioritize DRBs
// Loop through the UE logical channels (DCCH, DCCH1, DTCH for now)
header_len = 0;
header_len_last = 0;
sdu_length_total = 0;
for (j = 1; j < NB_RB_MAX; j++) {
header_len += 3;
// Need to see if we have space for data from this channel
if (dci_tbs - ta_len - header_len - sdu_length_total > 0) {
LOG_D(MAC, "[TEST]Requested %d bytes from RLC buffer on channel %d during first call\n", dci_tbs-ta_len-header_len);
//If we have space, we need to see how much data we can request at most (if any available)
rlc_status = mac_rlc_status_ind(mod_id,
rnti,
mod_id,
frame,
ENB_FLAG_YES,
MBMS_FLAG_NO,
j,
(dci_tbs - ta_len - header_len - sdu_length_total)); // transport block set size
//If data are available in channel j
if (rlc_status.bytes_in_buffer > 0) {
LOG_D(MAC, "[TEST]Have %d bytes in DCCH buffer during first call\n", rlc_status.bytes_in_buffer);
//Fill in as much as possible
data_to_request = cmin(dci_tbs - ta_len - header_len - sdu_length_total, rlc_status.bytes_in_buffer);
LOG_D(FLEXRAN_AGENT, "Will request %d bytes from channel %d\n", data_to_request, j);
if (data_to_request < 128) { //The header will be one byte less
header_len--;
header_len_last = 2;
} else {
header_len_last = 3;
}
/* if (j == 1 || j == 2) {
data_to_request+=0;
} */
LOG_D(MAC, "[TEST]Will request %d from channel %d\n", data_to_request, j);
rlc_pdus[channels_added] = (Protocol__FlexRlcPdu *) malloc(sizeof(Protocol__FlexRlcPdu));
protocol__flex_rlc_pdu__init(rlc_pdus[channels_added]);
rlc_pdus[channels_added]->n_rlc_pdu_tb = 2;
rlc_pdus[channels_added]->rlc_pdu_tb = (Protocol__FlexRlcPduTb **) malloc(sizeof(Protocol__FlexRlcPduTb *) * 2);
rlc_pdus[channels_added]->rlc_pdu_tb[0] = (Protocol__FlexRlcPduTb *) malloc(sizeof(Protocol__FlexRlcPduTb));
protocol__flex_rlc_pdu_tb__init(rlc_pdus[channels_added]->rlc_pdu_tb[0]);
rlc_pdus[channels_added]->rlc_pdu_tb[0]->has_logical_channel_id = 1;
rlc_pdus[channels_added]->rlc_pdu_tb[0]->logical_channel_id = j;
rlc_pdus[channels_added]->rlc_pdu_tb[0]->has_size = 1;
rlc_pdus[channels_added]->rlc_pdu_tb[0]->size = data_to_request;
rlc_pdus[channels_added]->rlc_pdu_tb[1] = (Protocol__FlexRlcPduTb *) malloc(sizeof(Protocol__FlexRlcPduTb));
protocol__flex_rlc_pdu_tb__init(rlc_pdus[channels_added]->rlc_pdu_tb[1]);
rlc_pdus[channels_added]->rlc_pdu_tb[1]->has_logical_channel_id = 1;
rlc_pdus[channels_added]->rlc_pdu_tb[1]->logical_channel_id = j;
rlc_pdus[channels_added]->rlc_pdu_tb[1]->has_size = 1;
rlc_pdus[channels_added]->rlc_pdu_tb[1]->size = data_to_request;
dl_data[num_ues_added]->n_rlc_pdu++;
channels_added++;
//Set this to the max value that we might request
sdu_length_total += data_to_request;
} else {
//Take back the assumption of a header for this channel
header_len -= 3;
} //End rlc_status.bytes_in_buffer <= 0
} //end of if dci_tbs - ta_len - header_len > 0
} // End of iterating the logical channels
// Add rlc_pdus to the dl_data message
dl_data[num_ues_added]->rlc_pdu = (Protocol__FlexRlcPdu **) malloc(sizeof(Protocol__FlexRlcPdu *) *
dl_data[num_ues_added]->n_rlc_pdu);
for (i = 0; i < dl_data[num_ues_added]->n_rlc_pdu; i++) {
dl_data[num_ues_added]->rlc_pdu[i] = rlc_pdus[i];
}
if (header_len == 0) {
LOG_D(FLEXRAN_AGENT, "Header was empty\n");
header_len_last = 0;
}
// there is a payload
if ((dl_data[num_ues_added]->n_rlc_pdu > 0)) {
// Now compute number of required RBs for total sdu length
// Assume RAH format 2
// adjust header lengths
LOG_D(FLEXRAN_AGENT, "We have %d bytes to transfer\n", sdu_length_total);
if (header_len != 0) {
LOG_D(FLEXRAN_AGENT, "Header length was %d ", header_len);
header_len_last--;
header_len -= header_len_last;
LOG_D(FLEXRAN_AGENT, "so we resized it to %d\n", header_len);
}
/* if (header_len == 2 || header_len == 3) { //Only one SDU, remove length field */
/* header_len = 1; */
/* } else { //Remove length field from the last SDU */
/* header_len--; */
/* } */
mcs_tmp = mcs;
if (mcs_tmp == 0) {
nb_rb = 4; // don't let the TBS get too small
} else {
nb_rb=min_rb_unit[CC_id];
}
LOG_D(MAC,"[TEST]The initial number of resource blocks was %d\n", nb_rb);
LOG_D(MAC,"[TEST] The initial mcs was %d\n", mcs_tmp);
TBS = mac_xface->get_TBS_DL(mcs_tmp, nb_rb);
LOG_D(MAC,"[TEST]The TBS during rate matching was %d\n", TBS);
while (TBS < (sdu_length_total + header_len + ta_len)) {
nb_rb += min_rb_unit[CC_id]; //
LOG_D(MAC, "[TEST]Had to increase the number of RBs\n");
if (nb_rb > nb_available_rb) { // if we've gone beyond the maximum number of RBs
// (can happen if N_RB_DL is odd)
TBS = mac_xface->get_TBS_DL(mcs_tmp, nb_available_rb);
nb_rb = nb_available_rb;
break;
}
TBS = mac_xface->get_TBS_DL(mcs_tmp, nb_rb);
}
if(nb_rb == ue_sched_ctl->pre_nb_available_rbs[CC_id]) {
LOG_D(MAC, "[TEST]We had the exact number of rbs. Time to fill the rballoc subband\n");
for(j = 0; j < flexran_get_N_RBG(mod_id, CC_id); j++) { // for indicating the rballoc for each sub-band
UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j] = ue_sched_ctl->rballoc_sub_UE[CC_id][j];
}
} else {
nb_rb_temp = nb_rb;
j = 0;
LOG_D(MAC, "[TEST]Will only partially fill the bitmap\n");
while((nb_rb_temp > 0) && (j < flexran_get_N_RBG(mod_id, CC_id))) {
if(ue_sched_ctl->rballoc_sub_UE[CC_id][j] == 1) {
UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j] = ue_sched_ctl->rballoc_sub_UE[CC_id][j];
if ((j == flexran_get_N_RBG(mod_id, CC_id) - 1) &&
((flexran_get_N_RB_DL(mod_id, CC_id) == 25)||
(flexran_get_N_RB_DL(mod_id, CC_id) == 50))) {
nb_rb_temp = nb_rb_temp - min_rb_unit[CC_id] + 1;
} else {
nb_rb_temp = nb_rb_temp - min_rb_unit[CC_id];
}
}
j = j+1;
}
}
PHY_vars_eNB_g[mod_id][CC_id]->mu_mimo_mode[UE_id].pre_nb_available_rbs = nb_rb;
PHY_vars_eNB_g[mod_id][CC_id]->mu_mimo_mode[UE_id].dl_pow_off = ue_sched_ctl->dl_pow_off[CC_id];
for(j = 0; j < flexran_get_N_RBG(mod_id, CC_id); j++) {
PHY_vars_eNB_g[mod_id][CC_id]->mu_mimo_mode[UE_id].rballoc_sub[j] = UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][j];
}
// decrease mcs until TBS falls below required length
while ((TBS > (sdu_length_total + header_len + ta_len)) && (mcs_tmp > 0)) {
mcs_tmp--;
TBS = mac_xface->get_TBS_DL(mcs_tmp, nb_rb);
}
// if we have decreased too much or we don't have enough RBs, increase MCS
while ((TBS < (sdu_length_total + header_len + ta_len)) &&
((( ue_sched_ctl->dl_pow_off[CC_id] > 0) && (mcs_tmp < 28)) || ( (ue_sched_ctl->dl_pow_off[CC_id]==0) && (mcs_tmp <= 15)))) {
mcs_tmp++;
TBS = mac_xface->get_TBS_DL(mcs_tmp, nb_rb);
}
dci_tbs = TBS;
mcs = mcs_tmp;
LOG_D(FLEXRAN_AGENT, "Final mcs was %d\n", mcs);
aggregation = process_ue_cqi(mod_id,UE_id);
dl_dci->has_aggr_level = 1;
dl_dci->aggr_level = aggregation;
UE_list->UE_template[CC_id][UE_id].nb_rb[harq_pid] = nb_rb;
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
UE_list->UE_template[CC_id][UE_id].DAI++;
// printf("DAI update: subframeP %d: UE %d, DAI %d\n",subframeP,UE_id,UE_list->UE_template[CC_id][UE_id].DAI);
//#warning only for 5MHz channel
update_ul_dci(mod_id, CC_id, rnti, UE_list->UE_template[CC_id][UE_id].DAI);
}
// do PUCCH power control
// this is the normalized RX power
normalized_rx_power = flexran_get_p0_pucch_dbm(mod_id,UE_id, CC_id); //eNB_UE_stats->Po_PUCCH_dBm;
target_rx_power = flexran_get_p0_nominal_pucch(mod_id, CC_id) + 20; //mac_xface->get_target_pucch_rx_power(mod_id, CC_id) + 20;
// 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_list->UE_template[CC_id][UE_id].pucch_tpc_tx_frame*10+UE_list->UE_template[CC_id][UE_id].pucch_tpc_tx_subframe;
if (((framex10psubframe+10)<=(frame*10+subframe)) || //normal case
((framex10psubframe>(frame*10+subframe)) && (((10240-framex10psubframe+frame*10+subframe)>=10)))) //frame wrap-around
if (flexran_get_p0_pucch_status(mod_id, UE_id, CC_id) == 1) {
flexran_update_p0_pucch(mod_id, UE_id, CC_id);
UE_list->UE_template[CC_id][UE_id].pucch_tpc_tx_frame = frame;
UE_list->UE_template[CC_id][UE_id].pucch_tpc_tx_subframe = subframe;
if (normalized_rx_power>(target_rx_power+1)) {
tpc = 0; //-1
tpc_accumulated--;
} else if (normalized_rx_power<(target_rx_power-1)) {
tpc = 2; //+1
tpc_accumulated++;
} else {
tpc = 1; //0
}
LOG_D(MAC,"[eNB %d] DLSCH scheduler: frame %d, subframe %d, harq_pid %d, tpc %d, accumulated %d, normalized/target rx power %d/%d\n",
mod_id, frame, subframe, harq_pid, tpc,
tpc_accumulated, normalized_rx_power, target_rx_power);
} // Po_PUCCH has been updated
else {
tpc = 1; //0
} // time to do TPC update
else {
tpc = 1; //0
}
for(i=0; i<PHY_vars_eNB_g[mod_id][CC_id]->frame_parms.N_RBG; i++) {
rballoc_sub[i] = UE_list->UE_template[CC_id][UE_id].rballoc_subband[harq_pid][i];
}
// Toggle NDI
LOG_D(MAC,"CC_id %d Frame %d, subframeP %d: Toggling Format1 NDI for UE %d (rnti %x/%d) oldNDI %d\n",
CC_id, frame, subframe, UE_id,
UE_list->UE_template[CC_id][UE_id].rnti,harq_pid, UE_list->UE_template[CC_id][UE_id].oldNDI[harq_pid]);
UE_list->UE_template[CC_id][UE_id].oldNDI[harq_pid]= 1 - UE_list->UE_template[CC_id][UE_id].oldNDI[harq_pid];
ndi = UE_list->UE_template[CC_id][UE_id].oldNDI[harq_pid];
UE_list->UE_template[CC_id][UE_id].mcs[harq_pid] = mcs;
UE_list->UE_template[CC_id][UE_id].oldTPC[harq_pid] = tpc;
// Increase the pointer for the number of scheduled UEs
num_ues_added++;
ue_has_transmission = 1;
} else { // There is no data from RLC or MAC header, so don't schedule
ue_has_transmission = 0;
}
} // End of new scheduling
// If we has transmission or retransmission
if (ue_has_transmission) {
switch (mac_xface->get_transmission_mode(mod_id, CC_id, rnti)) {
case 1:
case 2:
default:
dl_dci->has_res_alloc = 1;
dl_dci->res_alloc = 0;
dl_dci->has_vrb_format = 1;
dl_dci->vrb_format = PROTOCOL__FLEX_VRB_FORMAT__FLVRBF_LOCALIZED;
dl_dci->has_format = 1;
dl_dci->format = PROTOCOL__FLEX_DCI_FORMAT__FLDCIF_1;
dl_dci->has_rb_bitmap = 1;
dl_dci->rb_bitmap = allocate_prbs_sub(nb_rb, rballoc_sub);
dl_dci->has_rb_shift = 1;
dl_dci->rb_shift = 0;
dl_dci->n_ndi = 1;
dl_dci->ndi = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_ndi);
dl_dci->ndi[0] = ndi;
dl_dci->n_rv = 1;
dl_dci->rv = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_rv);
dl_dci->rv[0] = round & 3;
dl_dci->has_tpc = 1;
dl_dci->tpc = tpc;
dl_dci->n_mcs = 1;
dl_dci->mcs = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_mcs);
dl_dci->mcs[0] = mcs;
dl_dci->n_tbs_size = 1;
dl_dci->tbs_size = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_tbs_size);
dl_dci->tbs_size[0] = dci_tbs;
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
dl_dci->has_dai = 1;
dl_dci->dai = (UE_list->UE_template[CC_id][UE_id].DAI-1)&3;
}
break;
case 3:
dl_dci->has_res_alloc = 1;
dl_dci->res_alloc = 0;
dl_dci->has_vrb_format = 1;
dl_dci->vrb_format = PROTOCOL__FLEX_VRB_FORMAT__FLVRBF_LOCALIZED;
dl_dci->has_format = 1;
dl_dci->format = PROTOCOL__FLEX_DCI_FORMAT__FLDCIF_2A;
dl_dci->has_rb_bitmap = 1;
dl_dci->rb_bitmap = allocate_prbs_sub(nb_rb, rballoc_sub);
dl_dci->has_rb_shift = 1;
dl_dci->rb_shift = 0;
dl_dci->n_ndi = 2;
dl_dci->ndi = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_ndi);
dl_dci->ndi[0] = ndi;
dl_dci->ndi[1] = ndi;
dl_dci->n_rv = 2;
dl_dci->rv = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_rv);
dl_dci->rv[0] = round & 3;
dl_dci->rv[1] = round & 3;
dl_dci->has_tpc = 1;
dl_dci->tpc = tpc;
dl_dci->n_mcs = 2;
dl_dci->mcs = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_mcs);
dl_dci->mcs[0] = mcs;
dl_dci->mcs[1] = mcs;
dl_dci->n_tbs_size = 2;
dl_dci->tbs_size = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_tbs_size);
dl_dci->tbs_size[0] = dci_tbs;
dl_dci->tbs_size[1] = dci_tbs;
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
dl_dci->has_dai = 1;
dl_dci->dai = (UE_list->UE_template[CC_id][UE_id].DAI-1)&3;
}
break;
case 4:
dl_dci->has_res_alloc = 1;
dl_dci->res_alloc = 0;
dl_dci->has_vrb_format = 1;
dl_dci->vrb_format = PROTOCOL__FLEX_VRB_FORMAT__FLVRBF_LOCALIZED;
dl_dci->has_format = 1;
dl_dci->format = PROTOCOL__FLEX_DCI_FORMAT__FLDCIF_2A;
dl_dci->has_rb_bitmap = 1;
dl_dci->rb_bitmap = allocate_prbs_sub(nb_rb, rballoc_sub);
dl_dci->has_rb_shift = 1;
dl_dci->rb_shift = 0;
dl_dci->n_ndi = 2;
dl_dci->ndi = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_ndi);
dl_dci->ndi[0] = ndi;
dl_dci->ndi[1] = ndi;
dl_dci->n_rv = 2;
dl_dci->rv = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_rv);
dl_dci->rv[0] = round & 3;
dl_dci->rv[1] = round & 3;
dl_dci->has_tpc = 1;
dl_dci->tpc = tpc;
dl_dci->n_mcs = 2;
dl_dci->mcs = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_mcs);
dl_dci->mcs[0] = mcs;
dl_dci->mcs[1] = mcs;
dl_dci->n_tbs_size = 2;
dl_dci->tbs_size = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_tbs_size);
dl_dci->tbs_size[0] = dci_tbs;
dl_dci->tbs_size[1] = dci_tbs;
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
dl_dci->has_dai = 1;
dl_dci->dai = (UE_list->UE_template[CC_id][UE_id].DAI-1)&3;
}
break;
case 5:
dl_dci->has_res_alloc = 1;
dl_dci->res_alloc = 0;
dl_dci->has_vrb_format = 1;
dl_dci->vrb_format = PROTOCOL__FLEX_VRB_FORMAT__FLVRBF_LOCALIZED;
dl_dci->has_format = 1;
dl_dci->format = PROTOCOL__FLEX_DCI_FORMAT__FLDCIF_1D;
dl_dci->has_rb_bitmap = 1;
dl_dci->rb_bitmap = allocate_prbs_sub(nb_rb, rballoc_sub);
dl_dci->has_rb_shift = 1;
dl_dci->rb_shift = 0;
dl_dci->n_ndi = 1;
dl_dci->ndi[0] = ndi;
dl_dci->n_rv = 1;
dl_dci->rv = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_rv);
dl_dci->rv[0] = round & 3;
dl_dci->has_tpc = 1;
dl_dci->tpc = tpc;
dl_dci->n_mcs = 1;
dl_dci->mcs = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_mcs);
dl_dci->mcs[0] = mcs;
dl_dci->n_tbs_size = 1;
dl_dci->tbs_size = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_tbs_size);
dl_dci->tbs_size[0] = dci_tbs;
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
dl_dci->has_dai = 1;
dl_dci->dai = (UE_list->UE_template[CC_id][UE_id].DAI-1)&3;
}
if(ue_sched_ctl->dl_pow_off[CC_id] == 2) {
ue_sched_ctl->dl_pow_off[CC_id] = 1;
}
dl_dci->has_dl_power_offset = 1;
dl_dci->dl_power_offset = ue_sched_ctl->dl_pow_off[CC_id];
dl_dci->has_precoding_info = 1;
dl_dci->precoding_info = 5; // Is this right??
break;
case 6:
dl_dci->has_res_alloc = 1;
dl_dci->res_alloc = 0;
dl_dci->has_vrb_format = 1;
dl_dci->vrb_format = PROTOCOL__FLEX_VRB_FORMAT__FLVRBF_LOCALIZED;
dl_dci->has_format = 1;
dl_dci->format = PROTOCOL__FLEX_DCI_FORMAT__FLDCIF_1D;
dl_dci->has_rb_bitmap = 1;
dl_dci->rb_bitmap = allocate_prbs_sub(nb_rb, rballoc_sub);
dl_dci->has_rb_shift = 1;
dl_dci->rb_shift = 0;
dl_dci->n_ndi = 1;
dl_dci->ndi = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_ndi);
dl_dci->ndi[0] = ndi;
dl_dci->n_rv = 1;
dl_dci->rv = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_rv);
dl_dci->rv[0] = round & 3;
dl_dci->has_tpc = 1;
dl_dci->tpc = tpc;
dl_dci->n_mcs = 1;
dl_dci->mcs = (uint32_t *) malloc(sizeof(uint32_t) * dl_dci->n_mcs);
dl_dci->mcs[0] = mcs;
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
dl_dci->has_dai = 1;
dl_dci->dai = (UE_list->UE_template[CC_id][UE_id].DAI-1)&3;
}
dl_dci->has_dl_power_offset = 1;
dl_dci->dl_power_offset = ue_sched_ctl->dl_pow_off[CC_id];
dl_dci->has_precoding_info = 1;
dl_dci->precoding_info = 5; // Is this right??
break;
}
}
if (flexran_get_duplex_mode(mod_id, CC_id) == PROTOCOL__FLEX_DUPLEX_MODE__FLDM_TDD) {
/* TODO */
//set_ul_DAI(mod_id, UE_id, CC_id, frame, subframe, frame_parms);
}
} // UE_id loop
} // CC_id loop
// Add all the dl_data elements to the flexran message
int offset = (*dl_info)->dl_mac_config_msg->n_dl_ue_data;
(*dl_info)->dl_mac_config_msg->n_dl_ue_data += num_ues_added;
if ( num_ues_added > 0 ){
(*dl_info)->dl_mac_config_msg->dl_ue_data = (Protocol__FlexDlData **) realloc( (*dl_info)->dl_mac_config_msg->dl_ue_data,
sizeof(Protocol__FlexDlData *) * ((*dl_info)->dl_mac_config_msg->n_dl_ue_data));
if ((*dl_info)->dl_mac_config_msg->dl_ue_data == NULL ){
LOG_E(MAC, "Request for memory reallocation failed\n");
return;
}
for (i = 0; i < num_ues_added; i++) {
(*dl_info)->dl_mac_config_msg->dl_ue_data[offset+i] = dl_data[i];
}
}
stop_meas(&eNB->schedule_dlsch);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_SCHEDULE_DLSCH,VCD_FUNCTION_OUT);
}