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Add positioning support for DL

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This commit is contained in:
Niccolò Iardella
2018-09-03 18:10:28 +02:00
committed by Robert Schmidt
parent 4f56f4ee95
commit 18ade8812a
3 changed files with 143 additions and 89 deletions
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openair2/LAYER2/MAC/eNB_scheduler_dlsch.c
+55 -29
View File
@@ -80,6 +80,10 @@ 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;
// Frequency ranges for slice positioning
int slice_position[MAX_NUM_SLICES*2] = {0, N_RBG_MAX, 0, N_RBG_MAX, 0, N_RBG_MAX, 0, N_RBG_MAX};
int slice_position_current[MAX_NUM_SLICES*2] = {0, N_RBG_MAX, 0, N_RBG_MAX, 0, N_RBG_MAX, 0, N_RBG_MAX};
// 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 };
@@ -445,9 +449,7 @@ set_ul_DAI(int module_idP, int UE_idP, int CC_idP, int frameP,
//------------------------------------------------------------------------------
void
schedule_dlsch(module_id_t module_idP,
frame_t frameP, sub_frame_t subframeP, int *mbsfn_flag)
//------------------------------------------------------------------------------{
schedule_dlsch(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP, int *mbsfn_flag)
{
int i = 0;
@@ -462,7 +464,7 @@ schedule_dlsch(module_id_t module_idP,
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",
module_idP, frameP, subframeP, i, slice_percentage[i]);
module_idP, frameP, subframeP, i, slice_percentage[i]);
slice_percentage[i]=0;
}
total_slice_percentage+=slice_percentage[i];
@@ -482,37 +484,38 @@ schedule_dlsch(module_id_t module_idP,
// 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_I(MAC,"[eNB %d]frame %d subframe %d: number of active DL slices has changed: %d-->%d\n",
module_idP, frameP, subframeP, 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;
}
if ((n_active_slices > 0) && (n_active_slices <= MAX_NUM_SLICES)) {
LOG_I(MAC, "[eNB %d]frame %d subframe %d: number of active DL slices has changed: %d-->%d\n",
module_idP, frameP, subframeP, 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_I(MAC,"[eNB %d][SLICE %d][DL] frame %d subframe %d: total percentage %f-->%f, slice RB percentage has changed: %f-->%f\n",
module_idP, i, frameP, subframeP, 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];
if (slice_percentage_current[i] != slice_percentage[i]) { // new slice percentage
LOG_I(MAC,
"[eNB %d][SLICE %d][DL] frame %d subframe %d: total percentage %f-->%f, slice RB percentage has changed: %f-->%f\n",
module_idP, i, frameP, subframeP, 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_I(MAC,"[eNB %d][SLICE %d][DL] frame %d subframe %d: slice MAX MCS has changed: %d-->%d\n",
module_idP, i, frameP, subframeP, 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",module_idP, i, slice_maxmcs[i],slice_maxmcs_current[i]);
slice_maxmcs[i]= slice_maxmcs_current[i];
}
if (slice_maxmcs_current[i] != slice_maxmcs[i]) {
if ((slice_maxmcs[i] >= 0) && (slice_maxmcs[i] < 29)) {
LOG_I(MAC, "[eNB %d][SLICE %d][DL] frame %d subframe %d: slice MAX MCS has changed: %d-->%d\n",
module_idP, i, frameP, subframeP, 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",
module_idP, i, slice_maxmcs[i], slice_maxmcs_current[i]);
slice_maxmcs[i] = slice_maxmcs_current[i];
}
}
// check if a new scheduler, and log the console
@@ -541,6 +544,29 @@ schedule_dlsch(module_id_t module_idP,
}
}
// Check for new slice positions
if (slice_position[i*2] > slice_position[i*2 + 1] ||
slice_position[i*2] < 0 ||
slice_position[i*2 + 1] > N_RBG_MAX) {
LOG_W(MAC, "[eNB %d][SLICE %d][DL] invalid slicing position (%d-%d), using previous values (%d-%d)\n",
module_idP, i,
slice_position[i*2], slice_position[i*2 + 1],
slice_position_current[i*2], slice_position_current[i*2 + 1]);
slice_position[i*2] = slice_position_current[i*2];
slice_position[i*2 + 1] = slice_position_current[i*2 + 1];
} else {
if (slice_position_current[i*2] != slice_position[i*2]) {
LOG_N(MAC,"[eNB %d][SLICE %d][DL] frame %d subframe %d: start frequency has changed (%d-->%d)\n",
module_idP, i, frameP, subframeP, slice_position_current[i*2], slice_position[i*2]);
slice_position_current[i*2] = slice_position[i*2];
}
if (slice_position_current[i*2 + 1] != slice_position[i*2 + 1]) {
LOG_N(MAC,"[eNB %d][SLICE %d][DL] frame %d subframe %d: end frequency has changed (%d-->%d)\n",
module_idP, i, frameP, subframeP, slice_position_current[i*2 + 1], slice_position[i*2 + 1]);
slice_position_current[i*2 + 1] = slice_position[i*2 + 1];
}
}
// Check for new sorting policy
if (sorting_policy_current[i] != sorting_policy[i]) {
LOG_I(MAC,"[eNB %d][SLICE %d][DL] frame %d subframe %d: UE sorting policy has changed (%x-->%x)\n",
openair2/LAYER2/MAC/mac_proto.h
+1 -1
View File
@@ -242,10 +242,10 @@ void dlsch_scheduler_pre_processor_allocate(module_id_t Mod_id,
int N_RBG,
int transmission_mode,
int min_rb_unit,
uint8_t N_RB_DL,
uint16_t nb_rbs_required[NFAPI_CC_MAX][MAX_MOBILES_PER_ENB],
uint16_t nb_rbs_required_remaining[NFAPI_CC_MAX][MAX_MOBILES_PER_ENB],
unsigned char rballoc_sub[NFAPI_CC_MAX][N_RBG_MAX],
uint8_t slice_allocation_mask[NFAPI_CC_MAX][N_RBG_MAX],
unsigned char MIMO_mode_indicator[NFAPI_CC_MAX][N_RBG_MAX]);
/* \brief Function to trigger the eNB scheduling procedure. It is called by PHY at the beginning of each subframe, \f$n$\f
openair2/LAYER2/MAC/pre_processor.c
+87 -59
View File
@@ -56,6 +56,7 @@ extern RAN_CONTEXT_t RC;
extern float slice_percentage[MAX_NUM_SLICES];
extern float slice_percentage_uplink[MAX_NUM_SLICES];
extern int slice_position[MAX_NUM_SLICES*2];
extern uint32_t sorting_policy[MAX_NUM_SLICES];
extern int slice_maxmcs[MAX_NUM_SLICES];
@@ -451,6 +452,28 @@ void decode_sorting_policy(module_id_t Mod_idP, slice_id_t slice_id) {
}
}
void decode_slice_positioning(module_id_t Mod_idP,
slice_id_t slice_id,
uint8_t slice_allocation_mask[NFAPI_CC_MAX][N_RBG_MAX]) {
uint8_t CC_id;
int RBG, start_frequency, end_frequency;
// Init slice_alloc_mask
for (CC_id = 0; CC_id < NFAPI_CC_MAX; ++CC_id) {
for (RBG = 0; RBG < N_RBG_MAX; ++RBG) {
slice_allocation_mask[CC_id][RBG] = 0;
}
}
start_frequency = slice_position[slice_id*2];
end_frequency = slice_position[slice_id*2 + 1];
for (CC_id = 0; CC_id < NFAPI_CC_MAX; ++CC_id) {
for (RBG = start_frequency; RBG <= end_frequency; ++RBG) {
slice_allocation_mask[CC_id][RBG] = 1;
}
}
}
// This fuction sorts the UE in order their dlsch buffer and CQI
void sort_UEs(module_id_t Mod_idP, slice_id_t slice_id, int frameP, sub_frame_t subframeP)
@@ -497,6 +520,7 @@ void dlsch_scheduler_pre_processor_accounting(module_id_t Mod_id,
int N_RBG[NFAPI_CC_MAX],
int min_rb_unit[NFAPI_CC_MAX],
uint8_t rballoc_sub[NFAPI_CC_MAX][N_RBG_MAX],
uint8_t slice_allocation_mask[NFAPI_CC_MAX][N_RBG_MAX],
uint8_t MIMO_mode_indicator[NFAPI_CC_MAX][N_RBG_MAX],
uint16_t nb_rbs_required[NFAPI_CC_MAX][MAX_MOBILES_PER_ENB]) {
@@ -624,11 +648,9 @@ void dlsch_scheduler_pre_processor_accounting(module_id_t Mod_id,
// control channel or retransmission
/* TODO: do we have to check for retransmission? */
if (mac_eNB_get_rrc_status(Mod_id, rnti) < RRC_RECONFIGURED || round != 8) {
nb_rbs_required_remaining_1[CC_id][UE_id] =
nb_rbs_required[CC_id][UE_id];
nb_rbs_required_remaining_1[CC_id][UE_id] = nb_rbs_required[CC_id][UE_id];
} else {
nb_rbs_required_remaining_1[CC_id][UE_id] =
cmin(average_rbs_per_user[CC_id], nb_rbs_required[CC_id][UE_id]);
nb_rbs_required_remaining_1[CC_id][UE_id] = cmin(average_rbs_per_user[CC_id], nb_rbs_required[CC_id][UE_id]);
}
}
}
@@ -694,18 +716,17 @@ void dlsch_scheduler_pre_processor_accounting(module_id_t Mod_id,
// 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,
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],
to_prb(RC.mac[Mod_id]->common_channels[CC_id].mib->message.dl_Bandwidth),
min_rb_unit[CC_id],
nb_rbs_required,
nb_rbs_required_remaining,
rballoc_sub,
slice_allocation_mask,
MIMO_mode_indicator);
#ifdef TM5
@@ -890,6 +911,7 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
uint16_t i, j;
uint8_t rballoc_sub[NFAPI_CC_MAX][N_RBG_MAX];
uint8_t slice_allocation_mask[NFAPI_CC_MAX][N_RBG_MAX];
uint8_t MIMO_mode_indicator[NFAPI_CC_MAX][N_RBG_MAX]; // If TM5 is revisited, we can move this inside accounting
int min_rb_unit[NFAPI_CC_MAX];
@@ -947,7 +969,11 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
// Sorts the user on the basis of dlsch logical channel buffer and CQI
sort_UEs(Mod_id, slice_id, frameP, subframeP);
// This function does the main allocation of the number of RBs
// TODO: When accounting() is revised, this will be moved inside positioning()
decode_slice_positioning(Mod_id, slice_id, slice_allocation_mask);
// ACCOUNTING
// This function does the main allocation of the *number* of RBs
dlsch_scheduler_pre_processor_accounting(Mod_id,
slice_id,
frameP,
@@ -955,6 +981,7 @@ dlsch_scheduler_pre_processor(module_id_t Mod_id,
N_RBG,
min_rb_unit,
rballoc_sub,
slice_allocation_mask,
MIMO_mode_indicator,
nb_rbs_required);
@@ -1220,65 +1247,66 @@ dlsch_scheduler_pre_processor_allocate(module_id_t Mod_id,
int N_RBG,
int transmission_mode,
int min_rb_unit,
uint8_t N_RB_DL,
uint16_t nb_rbs_required[NFAPI_CC_MAX][MAX_MOBILES_PER_ENB],
uint16_t nb_rbs_required_remaining[NFAPI_CC_MAX][MAX_MOBILES_PER_ENB],
unsigned char rballoc_sub[NFAPI_CC_MAX][N_RBG_MAX],
uint8_t slice_allocation_mask[NFAPI_CC_MAX][N_RBG_MAX],
unsigned char MIMO_mode_indicator[NFAPI_CC_MAX][N_RBG_MAX])
{
int i;
UE_list_t *UE_list = &RC.mac[Mod_id]->UE_list;
UE_sched_ctrl *ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
int i;
UE_list_t *UE_list = &RC.mac[Mod_id]->UE_list;
UE_sched_ctrl *ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id];
int N_RB_DL = to_prb(RC.mac[Mod_id]->common_channels[CC_id].mib->message.dl_Bandwidth);
for (i = 0; i < N_RBG; i++) {
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 (rballoc_sub[CC_id][i] != 0)
continue;
if (ue_sched_ctl->rballoc_sub_UE[CC_id][i] != 0)
continue;
if (nb_rbs_required_remaining[CC_id][UE_id] <= 0)
continue;
if (ue_sched_ctl->pre_nb_available_rbs[CC_id] >= nb_rbs_required[CC_id][UE_id])
continue;
if (ue_sched_ctl->dl_pow_off[CC_id] == 0)
continue;
if (slice_allocation_mask[CC_id][i] == 0)
continue;
// if this UE is not scheduled for TM5
if (ue_sched_ctl->dl_pow_off[CC_id] != 0) {
// 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))) {
if (nb_rbs_required_remaining[CC_id][UE_id] >=
min_rb_unit - 1) {
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
}
if ((i == N_RBG - 1) && ((N_RB_DL == 25) || (N_RB_DL == 50))) {
if (nb_rbs_required_remaining[CC_id][UE_id] >= min_rb_unit - 1) {
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
// }
}
}