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Commit 24fb5e9c authored by Robert Schmidt's avatar Robert Schmidt
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add adaptive HARQ UL

parent 9256a9e8
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Showing with 93 additions and 69 deletions
openair2/LAYER2/MAC/eNB_scheduler_ulsch.c
View file @ 24fb5e9c
......@@ -1282,7 +1282,6 @@ schedule_ulsch_rnti(module_id_t module_idP,
eNB_MAC_INST *mac = RC.mac[module_idP];
COMMON_channels_t *cc = mac->common_channels;
UE_info_t *UE_info = &mac->UE_info;
const int rvidx_tab[4] = {0, 2, 3, 1};
int sched_frame = frameP;
......@@ -1367,6 +1366,18 @@ schedule_ulsch_rnti(module_id_t module_idP,
if (UE_template_ptr->pre_allocated_nb_rb_ul < 1)
continue;
if (CCE_allocation_infeasible(module_idP, CC_id, 2, subframeP, aggregation, rnti)) {
LOG_W(MAC,
"[eNB %d] %d.%d, UE %d/%x CC %d: not enough CCE\n",
module_idP,
frameP,
subframeP,
UE_id,
rnti,
CC_id);
continue;
}
LOG_D(MAC,
"[eNB %d][PUSCH %d] %d.%d Scheduling UE %d/%x in "
"round %d (SR %d, UL_inactivity timer %d, UL_failure timer "
......@@ -1387,22 +1398,54 @@ schedule_ulsch_rnti(module_id_t module_idP,
UE_template_ptr->ul_SR = 0;
const uint8_t status = mac_eNB_get_rrc_status(module_idP, rnti);
/* New transmission */
if (round_index == 0) {
/* Should format_flag be 2 in CCE_allocation_infeasible??? */
/* This test seems to be way too long, can we provide an optimization? */
if (CCE_allocation_infeasible(module_idP, CC_id, 1, subframeP, aggregation, rnti)) {
LOG_W(MAC,
"[eNB %d] %d.%d, UE %d/%x CC %d: not enough CCE\n",
module_idP,
frameP,
subframeP,
UE_id,
rnti,
CC_id);
continue;
/* Power control */
/*
* Compute the expected ULSCH RX snr (for the stats)
* This is the normalized RX snr and this should be constant (regardless
* of mcs) Is not in dBm, unit from nfapi, converting to dBm
*/
const int32_t snr = (5 * UE_sched_ctrl_ptr->pusch_snr[CC_id] - 640) / 10;
const int32_t target_snr = mac->puSch10xSnr / 10;
/*
* This assumes accumulated tpc
* Make sure that we are only sending a tpc update once a frame, otherwise
* the control loop will freak out
*/
const int32_t fx10psf = (UE_template_ptr->pusch_tpc_tx_frame * 10)
+ UE_template_ptr->pusch_tpc_tx_subframe;
uint32_t tpc = 1;
if (((fx10psf + 10) <= (frameP * 10 + subframeP)) // normal case
|| ((fx10psf > (frameP * 10 + subframeP))
&& (((10240 - fx10psf + frameP * 10 + subframeP) >= 10)))) { // frame wrap-around
UE_template_ptr->pusch_tpc_tx_frame = frameP;
UE_template_ptr->pusch_tpc_tx_subframe = subframeP;
if (snr > target_snr + 4) {
tpc = 0; // -1
tpc_accumulated--;
} else if (snr < target_snr - 4) {
tpc = 2; // +1
tpc_accumulated++;
}
}
if (tpc != 1) {
LOG_D(MAC,
"[eNB %d] ULSCH scheduler: frame %d, subframe %d, harq_pid %d, "
"tpc %d, accumulated %d, snr/target snr %d/%d\n",
module_idP,
frameP,
subframeP,
harq_pid,
tpc,
tpc_accumulated,
snr,
target_snr);
}
/* New transmission */
if (round_index == 0) {
/* Handle the aperiodic CQI report */
uint32_t cqi_req = 0;
LOG_D(MAC,
......@@ -1447,56 +1490,6 @@ schedule_ulsch_rnti(module_id_t module_idP,
}
}
/* Power control */
/*
* Compute the expected ULSCH RX snr (for the stats)
* This is the normalized RX snr and this should be constant (regardless
* of mcs) Is not in dBm, unit from nfapi, converting to dBm
*/
const int32_t snr = (5 * UE_sched_ctrl_ptr->pusch_snr[CC_id] - 640) / 10;
const int32_t target_snr = mac->puSch10xSnr / 10;
/*
* This assumes accumulated tpc
* Make sure that we are only sending a tpc update once a frame, otherwise
* the control loop will freak out
*/
const int32_t fx10psf = (UE_template_ptr->pusch_tpc_tx_frame * 10)
+ UE_template_ptr->pusch_tpc_tx_subframe;
uint32_t tpc = 0;
if (((fx10psf + 10) <= (frameP * 10 + subframeP)) // normal case
|| ((fx10psf > (frameP * 10 + subframeP))
&& (((10240 - fx10psf + frameP * 10 + subframeP) >= 10)))) { // frame wrap-around
UE_template_ptr->pusch_tpc_tx_frame = frameP;
UE_template_ptr->pusch_tpc_tx_subframe = subframeP;
if (snr > target_snr + 4) {
tpc = 0; // -1
tpc_accumulated--;
} else if (snr < target_snr - 4) {
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, snr/target snr %d/%d\n",
module_idP,
frameP,
subframeP,
harq_pid,
tpc,
tpc_accumulated,
snr,
target_snr);
}
const uint8_t ndi = 1 - UE_template_ptr->oldNDI_UL[harq_pid]; // NDI: new data indicator
const uint8_t mcs = UE_template_ptr->pre_assigned_mcs_ul;
UE_template_ptr->oldNDI_UL[harq_pid] = ndi;
......@@ -1703,6 +1696,16 @@ schedule_ulsch_rnti(module_id_t module_idP,
UE_id,
rnti);
} else { // round_index > 0 => retransmission
uint8_t mcs_rv = 0;
const int rvidx_tab[4] = {0, 2, 3, 1};
uint8_t round_UL = UE_sched_ctrl_ptr->round_UL[CC_id][harq_pid];
if (rvidx_tab[round_UL & 3] == 1) {
mcs_rv = 29;
} else if (rvidx_tab[round_UL & 3] == 2) {
mcs_rv = 30;
} else if (rvidx_tab[round_UL & 3] == 3) {
mcs_rv = 31;
}
T(T_ENB_MAC_UE_UL_SCHEDULE_RETRANSMISSION,
T_INT(module_idP),
T_INT(CC_id),
......@@ -1710,13 +1713,13 @@ schedule_ulsch_rnti(module_id_t module_idP,
T_INT(frameP),
T_INT(subframeP),
T_INT(harq_pid),
T_INT(UE_template_ptr->mcs_UL[harq_pid]),
T_INT(mcs_rv),
T_INT(UE_template_ptr->first_rb_ul[harq_pid]),
T_INT(UE_template_ptr->nb_rb_ul[harq_pid]),
T_INT(round_index));
/* Add UL_config PDUs */
LOG_D(MAC,
"[PUSCH %d] Frame %d, Subframe %d: Adding UL CONFIG.Request for UE "
"[PUSCH %d] %4d.%d: Adding UL CONFIG.Request for UE "
"%d/%x, ulsch_frame %d, ulsch_subframe %d\n",
harq_pid,
frameP,
......@@ -1725,10 +1728,31 @@ schedule_ulsch_rnti(module_id_t module_idP,
rnti,
sched_frame,
sched_subframeP);
hi_dci0_pdu = &hi_dci0_req_body->hi_dci0_pdu_list[hi_dci0_req_body->number_of_dci + hi_dci0_req_body->number_of_hi];
memset((void *)hi_dci0_pdu, 0, sizeof(nfapi_hi_dci0_request_pdu_t));
hi_dci0_pdu->pdu_type = NFAPI_HI_DCI0_DCI_PDU_TYPE;
hi_dci0_pdu->pdu_size = 2 + sizeof(nfapi_hi_dci0_dci_pdu);
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.tl.tag = NFAPI_HI_DCI0_REQUEST_DCI_PDU_REL8_TAG;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dci_format = NFAPI_UL_DCI_FORMAT_0;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.aggregation_level = aggregation;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.rnti = rnti;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.transmission_power = 6000;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.resource_block_start = UE_template_ptr->first_rb_ul[harq_pid];
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.number_of_resource_block = UE_template_ptr->nb_rb_ul[harq_pid];
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.mcs_1 = mcs_rv;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.cyclic_shift_2_for_drms = cshift;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.frequency_hopping_enabled_flag = 0;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.new_data_indication_1 = UE_template_ptr->oldNDI_UL[harq_pid];
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.tpc = tpc;
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.cqi_csi_request = UE_template_ptr->cqi_req[harq_pid];
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.dl_assignment_index = UE_template_ptr->DAI_ul[sched_subframeP];
hi_dci0_pdu->dci_pdu.dci_pdu_rel8.harq_pid = harq_pid;
hi_dci0_req_body->number_of_dci++;
uint16_t ul_req_index = 0;
uint8_t dlsch_flag = 0;
uint32_t cqi_req = UE_template_ptr->cqi_req[harq_pid];
for (ul_req_index = 0; ul_req_index < ul_req_tmp_body->number_of_pdus; ul_req_index++) {
if (ul_req_tmp_body->ul_config_pdu_list[ul_req_index].pdu_type == NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE &&
ul_req_tmp_body->ul_config_pdu_list[ul_req_index].uci_harq_pdu.ue_information.ue_information_rel8.rnti == rnti) {
......@@ -1754,7 +1778,7 @@ schedule_ulsch_rnti(module_id_t module_idP,
rnti,
UE_template_ptr->first_rb_ul[harq_pid], // resource_block_start
UE_template_ptr->nb_rb_ul[harq_pid], // number_of_resource_blocks
UE_template_ptr->mcs_UL[harq_pid],
mcs_rv,
cshift, // cyclic_shift_2_for_drms
0, // frequency_hopping_enabled_flag
0, // frequency_hopping_bits
......
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