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Update MAC scheduler for slicing (not tested)

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This commit is contained in:
Navid Nikaein
2018-01-24 11:51:35 +01:00
committed by Robert Schmidt
parent 78dd80b086
commit 0937339a53
9 changed files with 453 additions and 212 deletions
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openair2/COMMON/platform_types.h
+1
View File
@@ -69,6 +69,7 @@ typedef uint32_t frame_t;
typedef int32_t sframe_t;
typedef uint32_t sub_frame_t;
typedef uint8_t module_id_t;
typedef uint8_t slice_id_t;
typedef uint8_t eNB_index_t;
typedef uint16_t ue_id_t;
typedef int16_t smodule_id_t;
openair2/LAYER2/MAC/defs.h
+1 -1
View File
@@ -800,7 +800,7 @@ typedef struct {
///Contention resolution timer used during random access
uint8_t mac_ContentionResolutionTimer;
uint16_t max_allowed_rbs[MAX_NUM_LCID];
uint16_t max_rbs_allowed_slice[MAX_NUM_LCID][MAX_NUM_SLICES];
uint8_t max_mcs[MAX_NUM_LCID];
openair2/LAYER2/MAC/eNB_scheduler.c
+1 -27
View File
@@ -744,40 +744,14 @@ eNB_dlsch_ulsch_scheduler(module_id_t module_idP, frame_t frameP,
copy_ulreq(module_idP, frameP, subframeP);
// This schedules SRS in subframeP
schedule_SRS(module_idP, frameP, subframeP);
#if defined(FLEXRAN_AGENT_SB_IF)
if (mac_agent_registered[module_idP]){
agent_mac_xface[module_idP]->flexran_agent_schedule_ul_spec(module_idP,frameP,cooperation_flag,0,4, &msg);
}
flexran_agent_mac_destroy_ul_config(msg);
#else
// This schedules ULSCH in subframeP (dci0)
schedule_ulsch(module_idP, frameP, subframeP);
#endif
// This schedules UCI_SR in subframeP
schedule_SR(module_idP, frameP, subframeP);
// This schedules UCI_CSI in subframeP
schedule_CSI(module_idP, frameP, subframeP);
#if defined(FLEXRAN_AGENT_SB_IF)
if (mac_agent_registered[module_idP]) {
agent_mac_xface[module_idP]->flexran_agent_schedule_ue_spec(
module_idP,
frameP,
subframeP,
mbsfn_status,
&msg);
flexran_apply_scheduling_decisions(module_idP,
frameP,
subframeP,
mbsfn_status,
msg);
flexran_agent_mac_destroy_dl_config(msg);
}
#else
// This schedules DLSCH in subframeP
schedule_ue_spec(module_idP, frameP, subframeP, mbsfn_status);
#endif
schedule_dlsch(module_idP, frameP, subframeP, mbsfn_status);
// Allocate CCEs for good after scheduling is done
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++)
openair2/LAYER2/MAC/eNB_scheduler_dlsch.c
+153 -3
View File
@@ -57,6 +57,15 @@
#include "intertask_interface.h"
#endif
#if defined FLEXRAN_AGENT_SB_IF
#include "ENB_APP/flexran_agent_defs.h"
#include "flexran_agent_ran_api.h"
#include "header.pb-c.h"
#include "flexran.pb-c.h"
#include "flexran_agent_mac.h"
#include <dlfcn.h>
#endif
#include "T.h"
#define ENABLE_MAC_PAYLOAD_DEBUG
@@ -64,6 +73,36 @@
extern RAN_CONTEXT_t RC;
// number of active slices for past and current time
int n_active_slices = 1;
int n_active_slices_current = 1;
// RB share for each slice for past and current time
float avg_slice_percentage=0.25;
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;
float total_slice_percentage_current = 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] =
{ "schedule_ue_spec",
"schedule_ue_spec",
"schedule_ue_spec",
"schedule_ue_spec"
};
// pointer to the slice specific scheduler
slice_scheduler_dl slice_sched_dl[MAX_NUM_SLICES] = {0};
//------------------------------------------------------------------------------
void
add_ue_dlsch_info(module_id_t module_idP,
@@ -408,12 +447,117 @@ set_ul_DAI(int module_idP, int UE_idP, int CC_idP, int frameP,
}
}
//------------------------------------------------------------------------------
void
schedule_dlsch(module_id_ module_idP,
frame_t frameP, sub_frame_t subframeP, int *mbsfn_flag)
//------------------------------------------------------------------------------{
{
int i=0;
total_slice_percentage=0;
avg_slice_percentage=1.0/n_active_slices;
// reset the slice percentage for inactive slices
for (i = n_active_slices; i< MAX_NUM_SLICES; i++) {
slice_percentage[i]=0;
}
for (i = 0; i < n_active_slices; i++) {
if (slice_percentage[i] < 0 ){
LOG_W(MAC, "[eNB %d] frame %d subframe %d:invalid slice %d percentage %f. resetting to zero",
mod_id, frame, subframe, i, slice_percentage[i]);
slice_percentage[i]=0;
}
total_slice_percentage+=slice_percentage[i];
}
for (i = 0; i < n_active_slices; i++) {
// Load any updated functions
if (update_dl_scheduler[i] > 0 ) {
slice_sched_dl[i] = dlsym(NULL, dl_scheduler_type[i]);
update_dl_scheduler[i] = 0;
update_dl_scheduler_current[i] = 0;
LOG_N(MAC,"update dl scheduler slice %d\n", i);
}
if (total_slice_percentage <= 1.0){ // the new total RB share is within the range
// 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 DL 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 DL 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]){ // new slice percentage
LOG_N(MAC,"[eNB %d][SLICE %d][DL] frame %d subframe %d: total percentage %f-->%f, slice RB percentage has changed: %f-->%f\n",
mod_id, i, frame, subframe, total_slice_percentage_current, total_slice_percentage, slice_percentage_current[i], slice_percentage[i]);
total_slice_percentage_current= total_slice_percentage;
slice_percentage_current[i] = slice_percentage[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][DL] 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][DL] invalid slice max mcs %d, revert the previous value %d\n",mod_id, i, slice_maxmcs[i],slice_maxmcs_current[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][DL] 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];
}
} else {
// here we can correct the values, e.g. reduce proportionally
if (n_active_slices == n_active_slices_current){
LOG_W(MAC,"[eNB %d][SLICE %d][DL] invalid total RB share (%f->%f), reduce proportionally the RB share by 0.1\n",
mod_id,i,
total_slice_percentage_current, total_slice_percentage);
if (slice_percentage[i] >= avg_slice_percentage){
slice_percentage[i]-=0.1;
total_slice_percentage-=0.1;
}
} else {
LOG_W(MAC,"[eNB %d][SLICE %d][DL] invalid total RB share (%f->%f), revert the number of slice to its previous value (%d->%d)\n",
mod_id,i,
total_slice_percentage_current, total_slice_percentage,
n_active_slices, n_active_slices_current );
n_active_slices = n_active_slices_current;
slice_percentage[i] = slice_percentage_current[i];
}
}
// Run each enabled slice-specific schedulers one by one
slice_sched_dl[i](mod_id, i, frame, subframe, mbsfn_flag,dl_info);
}
}
// changes to pre-processor for eMTC
//------------------------------------------------------------------------------
void
schedule_ue_spec(module_id_t module_idP,
schedule_ue_spec(module_id_t module_idP,slice_id_t slice_idP,
frame_t frameP, sub_frame_t subframeP, int *mbsfn_flag)
//------------------------------------------------------------------------------
{
@@ -539,7 +683,11 @@ schedule_ue_spec(module_id_t module_idP,
(VCD_SIGNAL_DUMPER_FUNCTIONS_DLSCH_PREPROCESSOR, VCD_FUNCTION_IN);
start_meas(&eNB->schedule_dlsch_preprocessor);
dlsch_scheduler_pre_processor(module_idP,
frameP, subframeP, N_RBG, mbsfn_flag);
slice_idP,
frameP,
subframeP,
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);
@@ -570,6 +718,8 @@ schedule_ue_spec(module_id_t module_idP,
LOG_D(MAC, "[eNB] Cannot find eNB_UE_stats\n");
continue_flag = 1;
}
if (flexran_slice_member(UE_id, slice_idP) == 0)
continue;
if (continue_flag != 1) {
switch (get_tmode(module_idP, CC_id, UE_id)) {
@@ -656,7 +806,7 @@ schedule_ue_spec(module_id_t module_idP,
*/
eNB_UE_stats->dlsch_mcs1 =
cqi_to_mcs[ue_sched_ctl->dl_cqi[CC_id]];
eNB_UE_stats->dlsch_mcs1 = eNB_UE_stats->dlsch_mcs1; //cmin(eNB_UE_stats->dlsch_mcs1, openair_daq_vars.target_ue_dl_mcs);
eNB_UE_stats->dlsch_mcs1 =cmin(eNB_UE_stats->dlsch_mcs1, flexran_slice_maxmcs(slice_idP));//openair_daq_vars.target_ue_dl_mcs);
// store stats
openair2/LAYER2/MAC/eNB_scheduler_primitives.c
+25
View File
@@ -4472,3 +4472,28 @@ harq_indication(module_id_t mod_idP, int CC_idP, frame_t frameP,
sched_ctl->pucch1_cqi_update[CC_idP] = 1;
}
}
// Flexran Slicing functions
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)
{
if ((slice_id < 0) || (slice_id > n_active_slices))
LOG_W(MAC, "out of range slice id %d\n", slice_id);
if ((UE_id % n_active_slices) == slice_id) {
return 1; // this ue is a member of this slice
}
return 0;
}
openair2/LAYER2/MAC/eNB_scheduler_ulsch.c
+146 -110
View File
@@ -57,6 +57,15 @@
#include "intertask_interface.h"
#endif
#if defined FLEXRAN_AGENT_SB_IF
#include "ENB_APP/flexran_agent_defs.h"
#include "flexran_agent_ran_api.h"
#include "header.pb-c.h"
#include "flexran.pb-c.h"
#include "flexran_agent_mac.h"
#include <dlfcn.h>
#endif
#include "T.h"
#define ENABLE_MAC_PAYLOAD_DEBUG
@@ -68,6 +77,37 @@ uint8_t rb_table[34] =
36, 40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 81, 90, 96, 100
};
/* number of active slices for past and current time*/
int n_active_slices_uplink = 1;
int n_active_slices_current_uplink = 1;
/* RB share for each slice for past and current time*/
float avg_slice_percentage_uplink=0.25;
float slice_percentage_uplink[MAX_NUM_SLICES] = {1.0, 0.0, 0.0, 0.0};
float slice_percentage_current_uplink[MAX_NUM_SLICES] = {1.0, 0.0, 0.0, 0.0};
float total_slice_percentage_uplink = 0;
float total_slice_percentage_current_uplink = 0;
// MAX MCS for each slice for past and current time
int slice_maxmcs_uplink[MAX_NUM_SLICES] = {16, 16, 16, 16};
int slice_maxmcs_current_uplink[MAX_NUM_SLICES] = {16,16,16,16};
/*resource blocks allowed*/
uint16_t nb_rbs_allowed_slice_uplink[MAX_NUM_CCs][MAX_NUM_SLICES];
/*Slice Update */
int update_ul_scheduler[MAX_NUM_SLICES] = {1, 1, 1, 1};
int update_ul_scheduler_current[MAX_NUM_SLICES] = {1, 1, 1, 1};
/* name of available scheduler*/
char *ul_scheduler_type[MAX_NUM_SLICES] = {"schedule_ulsch_rnti",
"schedule_ulsch_rnti",
"schedule_ulsch_rnti",
"schedule_ulsch_rnti"
};
/* Slice Function Pointer */
slice_scheduler_ul slice_sched_ul[MAX_NUM_SLICES] = {0};
void
rx_sdu(const module_id_t enb_mod_idP,
const int CC_idP,
@@ -921,7 +961,6 @@ set_msg3_subframe(module_id_t Mod_id,
}
}
void
schedule_ulsch(module_id_t module_idP, frame_t frameP,
sub_frame_t subframeP)
@@ -1035,14 +1074,117 @@ schedule_ulsch(module_id_t module_idP, frame_t frameP,
}
}
schedule_ulsch_rnti(module_idP, frameP, subframeP, sched_subframe,
first_rb);
// perform slice-specifc operations
total_slice_percentage_uplink=0;
avg_slice_percentage_uplink=1.0/n_active_slices_uplink;
// reset the slice percentage for inactive slices
for (i = n_active_slices_uplink; i< MAX_NUM_SLICES; i++) {
slice_percentage_uplink[i]=0;
}
for (i = 0; i < n_active_slices_uplink; i++) {
if (slice_percentage_uplink[i] < 0 ){
LOG_W(MAC, "[eNB %d] frame %d subframe %d:invalid slice %d percentage %f. resetting to zero",
mod_id, frame, subframe, i, slice_percentage_uplink[i]);
slice_percentage_uplink[i]=0;
}
total_slice_percentage_uplink+=slice_percentage_uplink[i];
}
for (i = 0; i < n_active_slices_uplink; i++) {
// Load any updated functions
if (update_ul_scheduler[i] > 0 ) {
slice_sched_ul[i] = dlsym(NULL, ul_scheduler_type[i]);
update_ul_scheduler[i] = 0;
update_ul_scheduler_current[i] = 0;
//slice_percentage_current_uplink[i]= slice_percentage_uplink[i];
//total_slice_percentage_current_uplink+=slice_percentage_uplink[i];
//if (total_slice_percentage_current_uplink> 1)
// total_slice_percentage_current_uplink=1;
LOG_N(MAC,"update ul scheduler slice %d\n", i);
}
// the new total RB share is within the range
if (total_slice_percentage_uplink <= 1.0){
// check if the number of slices has changed, and log
if (n_active_slices_current_uplink != n_active_slices_uplink ){
if ((n_active_slices_uplink > 0) && (n_active_slices_uplink <= MAX_NUM_SLICES)) {
LOG_N(MAC,"[eNB %d]frame %d subframe %d: number of active UL slices has changed: %d-->%d\n",
mod_id, frame, subframe, n_active_slices_current_uplink, n_active_slices_uplink);
n_active_slices_current_uplink = n_active_slices_uplink;
} else {
LOG_W(MAC,"invalid number of UL slices %d, revert to the previous value %d\n",n_active_slices_uplink, n_active_slices_current_uplink);
n_active_slices_uplink = n_active_slices_current_uplink;
}
}
// check if the slice rb share has changed, and log the console
if (slice_percentage_current_uplink[i] != slice_percentage_uplink[i]){
LOG_N(MAC,"[eNB %d][SLICE %d][UL] frame %d subframe %d: total percentage %f-->%f, slice RB percentage has changed: %f-->%f\n",
mod_id, i, frame, subframe, total_slice_percentage_current_uplink, total_slice_percentage_uplink, slice_percentage_current_uplink[i], slice_percentage_uplink[i]);
total_slice_percentage_current_uplink= total_slice_percentage_uplink;
slice_percentage_current_uplink[i] = slice_percentage_uplink[i];
}
// check if the slice max MCS, and log the console
if (slice_maxmcs_current_uplink[i] != slice_maxmcs_uplink[i]){
if ((slice_maxmcs_uplink[i] >= 0) && (slice_maxmcs_uplink[i] <= 16)){
LOG_N(MAC,"[eNB %d][SLICE %d][UL] frame %d subframe %d: slice MAX MCS has changed: %d-->%d\n",
mod_id, i, frame, subframe, slice_maxmcs_current_uplink[i], slice_maxmcs_uplink[i]);
slice_maxmcs_current_uplink[i] = slice_maxmcs_uplink[i];
} else {
LOG_W(MAC,"[eNB %d][SLICE %d][UL] invalid slice max mcs %d, revert the previous value %d\n",mod_id, i, slice_maxmcs_uplink[i],slice_maxmcs_current_uplink[i]);
slice_maxmcs_uplink[i]= slice_maxmcs_current_uplink[i];
}
}
// check if a new scheduler, and log the console
if (update_ul_scheduler_current[i] != update_ul_scheduler[i]){
LOG_N(MAC,"[eNB %d][SLICE %d][UL] frame %d subframe %d: UL scheduler for this slice is updated: %s \n",
mod_id, i, frame, subframe, ul_scheduler_type[i]);
update_ul_scheduler_current[i] = update_ul_scheduler[i];
}
}
else {
if (n_active_slices_uplink == n_active_slices_current_uplink){
LOG_W(MAC,"[eNB %d][SLICE %d][UL] invalid total RB share (%f->%f), reduce proportionally the RB share by 0.1\n",
mod_id,i,
total_slice_percentage_current_uplink, total_slice_percentage_uplink);
if (slice_percentage_uplink[i] > avg_slice_percentage_uplink){
slice_percentage_uplink[i]-=0.1;
total_slice_percentage_uplink-=0.1;
}
} else {
// here we can correct the values, e.g. reduce proportionally
LOG_W(MAC,"[eNB %d][SLICE %d][UL] invalid total RB share (%f->%f), revert the number of slice to its previous value (%d->%d)\n",
mod_id,i,
total_slice_percentage_current_uplink, total_slice_percentage_uplink,
n_active_slices_uplink, n_active_slices_current_uplink);
n_active_slices_uplink = n_active_slices_current_uplink;
slice_percentage_uplink[i] = slice_percentage_current_uplink[i];
}
}
// Run each enabled slice-specific schedulers one by one
slice_sched_ul[i](module_idP, i,frameP, subframeP, sched_subframe,
first_rb);
}
stop_meas(&mac->schedule_ulsch);
}
void
schedule_ulsch_rnti(module_id_t module_idP,
slice_id_t slice_id,
frame_t frameP,
sub_frame_t subframeP,
unsigned char sched_subframeP, uint16_t * first_rb)
@@ -1081,7 +1223,7 @@ schedule_ulsch_rnti(module_id_t module_idP,
&mac->UL_req_tmp[CC_id][sched_subframeP].ul_config_request_body;
LOG_D(MAC, "entering ulsch preprocesor\n");
ulsch_scheduler_pre_processor(module_idP, frameP, subframeP, first_rb);
ulsch_scheduler_pre_processor(module_idP, slice_id, frameP, subframeP, first_rb);
LOG_D(MAC, "exiting ulsch preprocesor\n");
@@ -1115,7 +1257,6 @@ schedule_ulsch_rnti(module_id_t module_idP,
for (n=0; n<UE_list->numactiveULCCs[UE_id]; n++) {
CC_id = UE_list->ordered_ULCCids[n][UE_id];
<<<<<<< HEAD
if (mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti) == NULL) {
LOG_W(MAC,"[eNB %d] frame %d subframe %d, UE %d/%x CC %d: no PHY context\n", module_idP,frameP,subframeP,UE_id,rnti,CC_id);
drop_ue = 1;
@@ -1142,111 +1283,6 @@ schedule_ulsch_rnti(module_id_t module_idP,
subframeP, rnti);
UE_list->UE_sched_ctrl[UE_id].ul_failure_timer = 0;
UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync = 1;
=======
// loop over all active UL CC_ids for this UE
for (n=0; n<UE_list->numactiveULCCs[UE_id]; n++) {
// This is the actual CC_id in the list
CC_id = UE_list->ordered_ULCCids[n][UE_id];
frame_parms = mac_xface->get_lte_frame_parms(module_idP,CC_id);
eNB_UE_stats = mac_xface->get_eNB_UE_stats(module_idP,CC_id,rnti);
aggregation=get_aggregation(get_bw_index(module_idP,CC_id),
eNB_UE_stats->DL_cqi[0],
format0);
if (CCE_allocation_infeasible(module_idP,CC_id,0,subframeP,aggregation,rnti)) {
LOG_W(MAC,"[eNB %d] frame %d subframe %d, UE %d/%x CC %d: not enough nCCE\n", module_idP,frameP,subframeP,UE_id,rnti,CC_id);
continue; // break;
} else{
LOG_D(MAC,"[eNB %d] frame %d subframe %d, UE %d/%x CC %d mode %s: aggregation level %d\n",
module_idP,frameP,subframeP,UE_id,rnti,CC_id, mode_string[eNB_UE_stats->mode], 1<<aggregation);
}
if (eNB_UE_stats->mode == PUSCH) { // ue has a ulsch channel
DCI_pdu = &eNB->common_channels[CC_id].DCI_pdu;
UE_template = &UE_list->UE_template[CC_id][UE_id];
UE_sched_ctrl = &UE_list->UE_sched_ctrl[UE_id];
if (mac_xface->get_ue_active_harq_pid(module_idP,CC_id,rnti,frameP,subframeP,&harq_pid,&round,openair_harq_UL) == -1 ) {
LOG_W(MAC,"[eNB %d] Scheduler Frame %d, subframeP %d: candidate harq_pid from PHY for UE %d CC %d RNTI %x\n",
module_idP,frameP,subframeP, UE_id, CC_id, rnti);
continue;
} else
LOG_T(MAC,"[eNB %d] Frame %d, subframeP %d, UE %d CC %d : got harq pid %d round %d (rnti %x,mode %s)\n",
module_idP,frameP,subframeP,UE_id,CC_id, harq_pid, round,rnti,mode_string[eNB_UE_stats->mode]);
PHY_vars_eNB_g[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP*10)+subframeP] = UE_template->ul_total_buffer;
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BO,PHY_vars_eNB_g[module_idP][CC_id]->pusch_stats_BO[UE_id][(frameP*10)+subframeP]);
if (((UE_is_to_be_scheduled(module_idP,CC_id,UE_id)>0)) || (round>0))// || ((frameP%10)==0))
// if there is information on bsr of DCCH, DTCH or if there is UL_SR, or if there is a packet to retransmit, or we want to schedule a periodic feedback every 10 frames
{
LOG_D(MAC,"[eNB %d][PUSCH] Frame %d subframe %d Scheduling UE %d/%x in round %d(SR %d,UL_inactivity timer %d,UL_failure timer %d)\n",
module_idP,frameP,subframeP,UE_id,rnti,round,UE_template->ul_SR,
UE_sched_ctrl->ul_inactivity_timer,
UE_sched_ctrl->ul_failure_timer);
// reset the scheduling request
UE_template->ul_SR = 0;
status = mac_eNB_get_rrc_status(module_idP,rnti);
if (status < RRC_CONNECTED)
cqi_req = 0;
else if (UE_sched_ctrl->cqi_req_timer>30) {
cqi_req = 1;
UE_sched_ctrl->cqi_req_timer=0;
}
else
cqi_req = 0;
//power control
//compute the expected ULSCH RX power (for the stats)
// this is the normalized RX power and this should be constant (regardless of mcs
normalized_rx_power = eNB_UE_stats->UL_rssi[0];
target_rx_power = mac_xface->get_target_pusch_rx_power(module_idP,CC_id);
// 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->pusch_tpc_tx_frame*10+UE_template->pusch_tpc_tx_subframe;
if (((framex10psubframe+10)<=(frameP*10+subframeP)) || //normal case
((framex10psubframe>(frameP*10+subframeP)) && (((10240-framex10psubframe+frameP*10+subframeP)>=10)))) //frame wrap-around
{
UE_template->pusch_tpc_tx_frame=frameP;
UE_template->pusch_tpc_tx_subframe=subframeP;
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
}
} else {
tpc = 1; //0
}
if (tpc!=1) {
LOG_D(MAC,"[eNB %d] ULSCH scheduler: frame %d, subframe %d, harq_pid %d, tpc %d, accumulated %d, normalized/target rx power %d/%d\n",
module_idP,frameP,subframeP,harq_pid,tpc,
tpc_accumulated,normalized_rx_power,target_rx_power);
}
// new transmission
if (round==0) {
ndi = 1-UE_template->oldNDI_UL[harq_pid];
UE_template->oldNDI_UL[harq_pid]=ndi;
UE_list->eNB_UE_stats[CC_id][UE_id].normalized_rx_power=normalized_rx_power;
UE_list->eNB_UE_stats[CC_id][UE_id].target_rx_power=target_rx_power;
UE_list->eNB_UE_stats[CC_id][UE_id].ulsch_mcs1=UE_template->pre_assigned_mcs_ul;
mcs = UE_template->pre_assigned_mcs_ul;//cmin (UE_template->pre_assigned_mcs_ul, openair_daq_vars.target_ue_ul_mcs); // adjust, based on user-defined MCS
if (UE_template->pre_allocated_rb_table_index_ul >=0) {
rb_table_index=UE_template->pre_allocated_rb_table_index_ul;
} else {
mcs=10;//cmin (10, openair_daq_vars.target_ue_ul_mcs);
rb_table_index=13; // for PHR
>>>>>>> feature-68-enb-agent
}
continue;
}
openair2/LAYER2/MAC/flexran_agent_scheduler_dlsch_ue.c
+1 -1
View File
@@ -578,7 +578,7 @@ _dlsch_scheduler_pre_processor(module_id_t Mod_id,
if (!phy_stats_exist(Mod_id, rnti))
continue;
for (ii=0; ii < UE_num_active_CC(UE_list,UE_id); ii++) {
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];
openair2/LAYER2/MAC/pre_processor.c
+110 -67
View File
@@ -96,7 +96,7 @@ int phy_stats_exist(module_id_t Mod_id, int rnti)
// This function stores the downlink buffer for all the logical channels
void
store_dlsch_buffer(module_id_t Mod_id, frame_t frameP,
store_dlsch_buffer(module_id_t Mod_id, slice_id_t slice_id, frame_t frameP,
sub_frame_t subframeP)
{
@@ -110,6 +110,9 @@ store_dlsch_buffer(module_id_t Mod_id, frame_t frameP,
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];
@@ -153,8 +156,8 @@ store_dlsch_buffer(module_id_t Mod_id, frame_t frameP,
*/
if (UE_template->dl_buffer_info[i] > 0)
LOG_D(MAC,
"[eNB %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, frameP, subframeP, UE_id,
"[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],
@@ -182,6 +185,7 @@ store_dlsch_buffer(module_id_t Mod_id, frame_t frameP,
// This function returns the estimated number of RBs required by each UE for downlink scheduling
void
assign_rbs_required(module_id_t Mod_id,
slice_id_t slice_id,
frame_t frameP,
sub_frame_t subframe,
uint16_t
@@ -200,7 +204,8 @@ assign_rbs_required(module_id_t Mod_id,
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);
//update CQI information across component carriers
@@ -262,16 +267,18 @@ assign_rbs_required(module_id_t Mod_id,
to_prb(RC.mac[Mod_id]->common_channels[CC_id].
mib->message.dl_Bandwidth);
UE_list->ue_sched_ctl.max_allowed_rbs[CC_id][slice_id]= flexran_nb_rbs_allowed_slice(slice_percentage[slice_id],N_RB_DL);
/* 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] > N_RB_DL) {
if (nb_rbs_required[CC_id][UE_id] > UE_list->ue_sched_ctl.max_allowed_rbs[CC_id][slice_id]) {
TBS =
get_TBS_DL(eNB_UE_stats->dlsch_mcs1, N_RB_DL);
nb_rbs_required[CC_id][UE_id] = N_RB_DL;
get_TBS_DL(eNB_UE_stats->dlsch_mcs1, UE_list->ue_sched_ctl.max_allowed_rbs[CC_id][slice_id]);
nb_rbs_required[CC_id][UE_id] = UE_list->ue_sched_ctl.max_allowed_rbs[CC_id][slice_id];
break;
}
@@ -556,13 +563,14 @@ void sort_UEs(module_id_t Mod_idP, int frameP, sub_frame_t subframeP)
// 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,
slice_id_t 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], harq_pid =
0, round = 0, total_ue_count;
0, round = 0, total_ue_count[MAX_NUM_CCs], total_rbs_used[MAX_NUM_CCs];
unsigned char MIMO_mode_indicator[MAX_NUM_CCs][N_RBG_MAX];
int UE_id, i;
uint16_t ii, j;
@@ -619,6 +627,8 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
N_RBG[CC_id],
nb_rbs_required,
nb_rbs_required_remaining,
total_ue_count,
total_rbs_used,
rballoc_sub,
MIMO_mode_indicator);
@@ -627,12 +637,12 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
// Store the DLSCH buffer for each logical channel
store_dlsch_buffer(Mod_id, frameP, subframeP);
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, frameP, subframeP, nb_rbs_required,
assign_rbs_required(Mod_id, slice_id, frameP, subframeP, nb_rbs_required,
min_rb_unit);
@@ -641,65 +651,89 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
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 = UE_RNTI(Mod_id, 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;
UE_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;
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];
cc = &RC.mac[Mod_id]->common_channels[ii];
if (cc->tdd_Config)
harq_pid = ((frameP * 10) + subframeP) % 10;
else
harq_pid = ((frameP * 10) + subframeP) & 7;
round = ue_sched_ctl->round[CC_id][harq_pid];
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];
cc = &RC.mac[Mod_id]->common_channels[ii];
if (cc->tdd_Config)
harq_pid = ((frameP * 10) + subframeP) % 10;
else
harq_pid = ((frameP * 10) + subframeP) & 7;
round = ue_sched_ctl->round[CC_id][harq_pid];
average_rbs_per_user[CC_id] = 0;
average_rbs_per_user[CC_id] = 0;
if (round != 8) {
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;
}
// hypothetical assignment
/*
* 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 (round != 8) {
nb_rbs_required[CC_id][UE_id] =
UE_list->UE_template[CC_id][UE_id].nb_rb[harq_pid];
total_rbs_used[CC_id]+=nb_rbs_required[CC_id][UE_id];
}
N_RB_DL =
to_prb(RC.mac[Mod_id]->common_channels[CC_id].mib->
message.dl_Bandwidth);
//nb_rbs_required_remaining[UE_id] = nb_rbs_required[UE_id];
if (nb_rbs_required[CC_id][UE_id] > 0) {
total_ue_count[CC_id] = total_ue_count[CC_id] + 1;
}
if (total_ue_count == 0) {
average_rbs_per_user[CC_id] = 0;
} else if ((min_rb_unit[CC_id] * total_ue_count) <= (N_RB_DL)) {
average_rbs_per_user[CC_id] =
(uint16_t) floor(N_RB_DL / 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
}
}
}
}
// loop over all active UEs and calculate avg rb per user based on total active UEs
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;
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];
// hypothetical assignment
/*
* 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.
*/
N_RB_DL =
to_prb(RC.mac[Mod_id]->common_channels[CC_id].mib->
message.dl_Bandwidth) - total_rbs_used[CC_id];
//recalcualte based on the what is left after retransmission
ue_sched_ctl.max_allowed_rbs[CC_id][slice_id]= flexran_nb_rbs_allowed_slice(slice_percentage[slice_id],N_RB_DL);
if (total_ue_count[CC_id] == 0) {
average_rbs_per_user[CC_id] = 0;
} else if ((min_rb_unit[CC_id] * total_ue_count[CC_id]) <= (ue_sched_ctl.max_allowed_rbs[CC_id][slice_id])) {
average_rbs_per_user[CC_id] =
(uint16_t) floor(ue_sched_ctl.max_allowed_rbs[CC_id][slice_id] / total_ue_count[CC_id]);
} 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]) {
@@ -709,6 +743,8 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
continue;
if (UE_list->UE_sched_ctrl[i].ul_out_of_sync == 1)
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];
@@ -765,11 +801,14 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
}
}
if (total_ue_count > 0) {
for (i = UE_list->head; i >= 0; i = UE_list->next[i]) {
for (i = UE_list->head; i >= 0; i = UE_list->next[i]) {
UE_id = i;
for (ii = 0; ii < UE_num_active_CC(UE_list, UE_id); ii++) {
// if there are UEs with traffic
if (total_ue_count [CC_id] > 0) {
CC_id = UE_list->ordered_CCids[ii][UE_id];
ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
round = ue_sched_ctl->round[CC_id][harq_pid];
@@ -969,9 +1008,9 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
}
}
#endif
}
} // total_ue_count
}
} // total_ue_count
}
} // end of for for r1 and r2
#ifdef TM5
@@ -1044,7 +1083,7 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
}
//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, "Total RBs allocated for UE%d = %d\n", 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]);
}
}
@@ -1065,9 +1104,12 @@ dlsch_scheduler_pre_processor_reset(int module_idP,
uint16_t
nb_rbs_required_remaining
[MAX_NUM_CCs][NUMBER_OF_UE_MAX],
unsigned char total_ue_count[MAX_NUM_CCs],
unsigned char total_rbs_used[MAX_NUM_CCs],
unsigned char
rballoc_sub[MAX_NUM_CCs]
[N_RBG_MAX], unsigned char
[N_RBG_MAX],
unsigned char
MIMO_mode_indicator[MAX_NUM_CCs]
[N_RBG_MAX])
{
@@ -1154,7 +1196,8 @@ dlsch_scheduler_pre_processor_reset(int module_idP,
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;
total_ue_count[CC_id]=0;
total_rbs_used[CC_id]=0;
switch (N_RB_DL) {
case 6:
RBGsize = 1;
@@ -1322,7 +1365,7 @@ dlsch_scheduler_pre_processor_allocate(module_id_t Mod_id,
void
ulsch_scheduler_pre_processor(module_id_t module_idP,
int frameP,
slice_id_t slice_id, int frameP,
sub_frame_t subframeP, uint16_t * first_rb)
{
@@ -1538,7 +1581,7 @@ ulsch_scheduler_pre_processor(module_id_t module_idP,
void
assign_max_mcs_min_rb(module_id_t module_idP, int frameP,
assign_max_mcs_min_rb(module_id_t module_idP, int slice_id, int frameP,
sub_frame_t subframeP, uint16_t * first_rb)
{
openair2/LAYER2/MAC/proto.h
+15 -3
View File
@@ -102,11 +102,12 @@ void schedule_ulsch(module_id_t module_idP, frame_t frameP,
/** \brief ULSCH Scheduling per RNTI
@param Mod_id Instance ID of eNB
@param slice_id Instance slice for this eNB
@param frame Frame index
@param subframe Subframe number on which to act
@param sched_subframe Subframe number where PUSCH is transmitted (for DAI lookup)
*/
void schedule_ulsch_rnti(module_id_t module_idP, frame_t frameP,
void schedule_ulsch_rnti(module_id_t module_idP, slice_id_t slice_idP, frame_t frameP,
sub_frame_t subframe,
unsigned char sched_subframe,
uint16_t * first_rb);
@@ -127,9 +128,12 @@ void fill_DLSCH_dci(module_id_t module_idP, frame_t frameP,
@param mbsfn_flag Indicates that MCH/MCCH is in this subframe
*/
void schedule_ue_spec(module_id_t module_idP, frame_t frameP,
void schedule_dlsch(module_id_t module_idP, frame_t frameP,
sub_frame_t subframe, int *mbsfn_flag);
void schedule_ue_spec(module_id_t module_idP, slice_id_t slice_idP,
frame_t frameP,sub_frame_t subframe, int *mbsfn_flag);
/** \brief Function for UE/PHY to compute PUSCH transmit power in power-control procedure.
@param Mod_id Module id of UE
@@ -209,6 +213,7 @@ void dlsch_scheduler_pre_processor_reset(int module_idP, int UE_id,
void dlsch_scheduler_pre_processor(module_id_t module_idP,
slice_id_t slice_idP,
frame_t frameP,
sub_frame_t subframe,
int N_RBG[MAX_NUM_CCs],
@@ -633,7 +638,7 @@ int UE_PCCID(module_id_t mod_idP, int ue_idP);
rnti_t UE_RNTI(module_id_t mod_idP, int ue_idP);
void ulsch_scheduler_pre_processor(module_id_t module_idP, int frameP,
void ulsch_scheduler_pre_processor(module_id_t module_idP, slice_id_t slice_id, int frameP,
sub_frame_t subframeP,
uint16_t * first_rb);
void store_ulsch_buffer(module_id_t module_idP, int frameP,
@@ -1158,5 +1163,12 @@ int32_t get_uldl_offset(int eutra_bandP);
int l2_init_ue(int eMBMS_active, char *uecap_xer, uint8_t cba_group_active,
uint8_t HO_active);
/*Slice related functions */
uint16_t flexran_nb_rbs_allowed_slice(float rb_percentage, int total_rbs);
int flexran_slice_member(int UE_id, int slice_id);
int flexran_slice_maxmcs(int slice_id;)
#endif
/** @}*/