/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /*! \file gNB_scheduler.c * \brief gNB scheduler top level function operates on per subframe basis * \author Navid Nikaein and Raymond Knopp, WEI-TAI CHEN * \date 2010 - 2014, 2018 * \email: navid.nikaein@eurecom.fr, kroempa@gmail.com * \version 0.5 * \company Eurecom, NTUST * @ingroup _mac */ #include "assertions.h" #include "LAYER2/MAC/mac.h" #include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h" #include "LAYER2/MAC/mac_proto.h" #include "LAYER2/NR_MAC_gNB/mac_proto.h" #include "common/utils/LOG/log.h" #include "common/utils/LOG/vcd_signal_dumper.h" #include "UTIL/OPT/opt.h" #include "OCG.h" #include "OCG_extern.h" #include "RRC/NR/nr_rrc_extern.h" //#include "LAYER2/MAC/pre_processor.c" #include "pdcp.h" #include "openair1/PHY/defs_gNB.h" #include "openair1/PHY/NR_TRANSPORT/nr_dlsch.h" //Agent-related headers #include "flexran_agent_extern.h" #include "flexran_agent_mac.h" #include "intertask_interface.h" #include "executables/softmodem-common.h" uint16_t nr_pdcch_order_table[6] = { 31, 31, 511, 2047, 2047, 8191 }; uint8_t nr_slots_per_frame[5] = {10, 20, 40, 80, 160}; void clear_nr_nfapi_information(gNB_MAC_INST * gNB, int CC_idP, frame_t frameP, sub_frame_t slotP){ nfapi_nr_dl_tti_request_t *DL_req = &gNB->DL_req[0]; nfapi_nr_ul_tti_request_t *UL_tti_req = &gNB->UL_tti_req[0]; nfapi_nr_ul_dci_request_t *UL_dci_req = &gNB->UL_dci_req[0]; nfapi_nr_tx_data_request_t *TX_req = &gNB->TX_req[0]; gNB->pdu_index[CC_idP] = 0; if (nfapi_mode==0 || nfapi_mode == 1) { // monolithic or PNF DL_req[CC_idP].SFN = frameP; DL_req[CC_idP].Slot = slotP; DL_req[CC_idP].dl_tti_request_body.nPDUs = 0; DL_req[CC_idP].dl_tti_request_body.nGroup = 0; //DL_req[CC_idP].dl_tti_request_body.transmission_power_pcfich = 6000; UL_dci_req[CC_idP].SFN = frameP; UL_dci_req[CC_idP].Slot = slotP; UL_dci_req[CC_idP].numPdus = 0; UL_tti_req[CC_idP].SFN = frameP; UL_tti_req[CC_idP].Slot = slotP; UL_tti_req[CC_idP].n_pdus = 0; UL_tti_req[CC_idP].n_ulsch = 0; UL_tti_req[CC_idP].n_ulcch = 0; UL_tti_req[CC_idP].n_group = 0; TX_req[CC_idP].Number_of_PDUs = 0; } } /* void check_nr_ul_failure(module_id_t module_idP, int CC_id, int UE_id, frame_t frameP, sub_frame_t slotP) { UE_list_t *UE_list = &RC.nrmac[module_idP]->UE_list; nfapi_nr_dl_dci_request_t *DL_req = &RC.nrmac[module_idP]->DL_req[0]; uint16_t rnti = UE_RNTI(module_idP, UE_id); NR_COMMON_channels_t *cc = RC.nrmac[module_idP]->common_channels; // check uplink failure if ((UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 0) && (UE_list->UE_sched_ctrl[UE_id].ul_out_of_sync == 0)) { LOG_I(MAC, "UE %d rnti %x: UL Failure timer %d \n", UE_id, rnti, UE_list->UE_sched_ctrl[UE_id].ul_failure_timer); if (UE_list->UE_sched_ctrl[UE_id].ra_pdcch_order_sent == 0) { UE_list->UE_sched_ctrl[UE_id].ra_pdcch_order_sent = 1; // add a format 1A dci for this UE to request an RA procedure (only one UE per subframe) nfapi_nr_dl_dci_request_pdu_t *dl_config_pdu = &DL_req[CC_id].dl_tti_request_body.dl_config_pdu_list[DL_req[CC_id].dl_tti_request_body.number_pdu]; memset((void *) dl_config_pdu, 0,sizeof(nfapi_dl_dci_request_pdu_t)); dl_config_pdu->pdu_type = NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE; dl_config_pdu->pdu_size = (uint8_t) (2 + sizeof(nfapi_dl_config_dci_dl_pdu)); dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.tl.tag = NFAPI_DL_DCI_REQUEST_DCI_DL_PDU_REL8_TAG; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.dci_format = NFAPI_DL_DCI_FORMAT_1A; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.aggregation_level = get_aggregation(get_bw_index(module_idP, CC_id), UE_list->UE_sched_ctrl[UE_id]. dl_cqi[CC_id], format1A); dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti = rnti; dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type = 1; // CRNTI : see Table 4-10 from SCF082 - nFAPI specifications dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.transmission_power = 6000; // equal to RS power AssertFatal((cc[CC_id].mib->message.dl_Bandwidth >= 0) && (cc[CC_id].mib->message.dl_Bandwidth < 6), "illegal dl_Bandwidth %d\n", (int) cc[CC_id].mib->message.dl_Bandwidth); dl_config_pdu->dci_dl_pdu.dci_dl_pdu_rel8.resource_block_coding = nr_pdcch_order_table[cc[CC_id].mib->message.dl_Bandwidth]; DL_req[CC_id].dl_tti_request_body.number_dci++; DL_req[CC_id].dl_tti_request_body.number_pdu++; DL_req[CC_id].dl_tti_request_body.tl.tag = NFAPI_DL_TTI_REQUEST_BODY_TAG; LOG_I(MAC, "UE %d rnti %x: sending PDCCH order for RAPROC (failure timer %d), resource_block_coding %d \n", UE_id, rnti, UE_list->UE_sched_ctrl[UE_id].ul_failure_timer, dl_config_pdu->dci_dl_pdu. dci_dl_pdu_rel8.resource_block_coding); } else { // ra_pdcch_sent==1 LOG_I(MAC, "UE %d rnti %x: sent PDCCH order for RAPROC waiting (failure timer %d) \n", UE_id, rnti, UE_list->UE_sched_ctrl[UE_id].ul_failure_timer); if ((UE_list->UE_sched_ctrl[UE_id].ul_failure_timer % 40) == 0) UE_list->UE_sched_ctrl[UE_id].ra_pdcch_order_sent = 0; // resend every 4 frames } UE_list->UE_sched_ctrl[UE_id].ul_failure_timer++; // check threshold if (UE_list->UE_sched_ctrl[UE_id].ul_failure_timer > 20000) { // inform RRC of failure and clear timer LOG_I(MAC, "UE %d rnti %x: UL Failure after repeated PDCCH orders: Triggering RRC \n", UE_id, rnti); mac_eNB_rrc_ul_failure(module_idP, CC_id, frameP, 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; //Inform the controller about the UE deactivation. Should be moved to RRC agent in the future if (rrc_agent_registered[module_idP]) { LOG_W(MAC, "notify flexran Agent of UE state change\n"); agent_rrc_xface[module_idP]->flexran_agent_notify_ue_state_change(module_idP, rnti, PROTOCOL__FLEX_UE_STATE_CHANGE_TYPE__FLUESC_DEACTIVATED); } } } // ul_failure_timer>0 } */ /* void schedule_nr_SRS(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP) { gNB_MAC_INST *gNB = RC.nrmac[module_idP]; UE_list_t *UE_list = &gNB->UE_list; nfapi_ul_config_request_body_t *ul_req; int CC_id, UE_id; NR_COMMON_channels_t *cc = RC.nrmac[module_idP]->common_channels; SoundingRS_UL_ConfigCommon_t *soundingRS_UL_ConfigCommon; struct SoundingRS_UL_ConfigDedicated *soundingRS_UL_ConfigDedicated; uint8_t TSFC; uint16_t deltaTSFC; // bitmap uint8_t srs_SubframeConfig; // table for TSFC (Period) and deltaSFC (offset) const uint16_t deltaTSFCTabType1[15][2] = { {1, 1}, {1, 2}, {2, 2}, {1, 5}, {2, 5}, {4, 5}, {8, 5}, {3, 5}, {12, 5}, {1, 10}, {2, 10}, {4, 10}, {8, 10}, {351, 10}, {383, 10} }; // Table 5.5.3.3-2 3GPP 36.211 FDD const uint16_t deltaTSFCTabType2[14][2] = { {2, 5}, {6, 5}, {10, 5}, {18, 5}, {14, 5}, {22, 5}, {26, 5}, {30, 5}, {70, 10}, {74, 10}, {194, 10}, {326, 10}, {586, 10}, {210, 10} }; // Table 5.5.3.3-2 3GPP 36.211 TDD uint16_t srsPeriodicity, srsOffset; for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) { soundingRS_UL_ConfigCommon = &cc[CC_id].radioResourceConfigCommon->soundingRS_UL_ConfigCommon; // check if SRS is enabled in this frame/subframe if (soundingRS_UL_ConfigCommon) { srs_SubframeConfig = soundingRS_UL_ConfigCommon->choice.setup.srs_SubframeConfig; if (cc[CC_id].tdd_Config == NULL) { // FDD deltaTSFC = deltaTSFCTabType1[srs_SubframeConfig][0]; TSFC = deltaTSFCTabType1[srs_SubframeConfig][1]; } else { // TDD deltaTSFC = deltaTSFCTabType2[srs_SubframeConfig][0]; TSFC = deltaTSFCTabType2[srs_SubframeConfig][1]; } // Sounding reference signal subframes are the subframes satisfying ns/2 mod TSFC (- deltaTSFC uint16_t tmp = (subframeP % TSFC); if ((1 << tmp) & deltaTSFC) { // This is an SRS subframe, loop over UEs for (UE_id = 0; UE_id < MAX_MOBILES_PER_GNB; UE_id++) { if (!RC.nrmac[module_idP]->UE_list.active[UE_id]) continue; ul_req = &RC.nrmac[module_idP]->UL_req[CC_id].ul_config_request_body; // drop the allocation if the UE hasn't send RRCConnectionSetupComplete yet if (mac_eNB_get_rrc_status(module_idP,UE_RNTI(module_idP, UE_id)) < RRC_CONNECTED) continue; AssertFatal(UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated != NULL, "physicalConfigDedicated is null for UE %d\n", UE_id); if ((soundingRS_UL_ConfigDedicated = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->soundingRS_UL_ConfigDedicated) != NULL) { if (soundingRS_UL_ConfigDedicated->present == SoundingRS_UL_ConfigDedicated_PR_setup) { get_srs_pos(&cc[CC_id], soundingRS_UL_ConfigDedicated->choice. setup.srs_ConfigIndex, &srsPeriodicity, &srsOffset); if (((10 * frameP + subframeP) % srsPeriodicity) == srsOffset) { // Program SRS ul_req->srs_present = 1; nfapi_ul_config_request_pdu_t * ul_config_pdu = &ul_req->ul_config_pdu_list[ul_req->number_of_pdus]; memset((void *) ul_config_pdu, 0, sizeof(nfapi_ul_config_request_pdu_t)); ul_config_pdu->pdu_type = NFAPI_UL_CONFIG_SRS_PDU_TYPE; ul_config_pdu->pdu_size = 2 + (uint8_t) (2 + sizeof(nfapi_ul_config_srs_pdu)); ul_config_pdu->srs_pdu.srs_pdu_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_SRS_PDU_REL8_TAG; ul_config_pdu->srs_pdu.srs_pdu_rel8.size = (uint8_t)sizeof(nfapi_ul_config_srs_pdu); ul_config_pdu->srs_pdu.srs_pdu_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti; ul_config_pdu->srs_pdu.srs_pdu_rel8.srs_bandwidth = soundingRS_UL_ConfigDedicated->choice.setup.srs_Bandwidth; ul_config_pdu->srs_pdu.srs_pdu_rel8.frequency_domain_position = soundingRS_UL_ConfigDedicated->choice.setup.freqDomainPosition; ul_config_pdu->srs_pdu.srs_pdu_rel8.srs_hopping_bandwidth = soundingRS_UL_ConfigDedicated->choice.setup.srs_HoppingBandwidth;; ul_config_pdu->srs_pdu.srs_pdu_rel8.transmission_comb = soundingRS_UL_ConfigDedicated->choice.setup.transmissionComb; ul_config_pdu->srs_pdu.srs_pdu_rel8.i_srs = soundingRS_UL_ConfigDedicated->choice.setup.srs_ConfigIndex; ul_config_pdu->srs_pdu.srs_pdu_rel8.sounding_reference_cyclic_shift = soundingRS_UL_ConfigDedicated->choice.setup.cyclicShift; // ul_config_pdu->srs_pdu.srs_pdu_rel10.antenna_port = ;// // ul_config_pdu->srs_pdu.srs_pdu_rel13.number_of_combs = ;// RC.nrmac[module_idP]->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP; RC.nrmac[module_idP]->UL_req[CC_id].header.message_id = NFAPI_UL_CONFIG_REQUEST; ul_req->number_of_pdus++; } // if (((10*frameP+subframeP) % srsPeriodicity) == srsOffset) } // if (soundingRS_UL_ConfigDedicated->present == SoundingRS_UL_ConfigDedicated_PR_setup) } // if ((soundingRS_UL_ConfigDedicated = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->soundingRS_UL_ConfigDedicated)!=NULL) } // for (UE_id ... } // if((1<UL_tti_req[CC_id]; *ul_req = *ul_req_tmp; // Restore the pointer ul_req->ul_config_request_body.ul_config_pdu_list = ul_req_pdu; ul_req->sfn_sf = (frameP<<7) + slotP; ul_req_tmp->ul_config_request_body.number_of_pdus = 0; if (ul_req->ul_config_request_body.number_of_pdus>0) { LOG_D(PHY, "%s() active NOW (frameP:%d slotP:%d) pdus:%d\n", __FUNCTION__, frameP, slotP, ul_req->ul_config_request_body.number_of_pdus); } memcpy((void*)ul_req->ul_config_request_body.ul_config_pdu_list, (void*)ul_req_tmp->ul_config_request_body.ul_config_pdu_list, ul_req->ul_config_request_body.number_of_pdus*sizeof(nfapi_ul_config_request_pdu_t)); } } */ void nr_schedule_pucch(int Mod_idP, int UE_id, frame_t frameP, sub_frame_t slotP) { uint16_t O_uci; uint16_t O_ack; uint8_t SR_flag = 0; // no SR in PUCCH implemented for now NR_ServingCellConfigCommon_t *scc = RC.nrmac[Mod_idP]->common_channels->ServingCellConfigCommon; NR_UE_list_t *UE_list = &RC.nrmac[Mod_idP]->UE_list; AssertFatal(UE_list->active[UE_id] >=0,"Cannot find UE_id %d is not active\n",UE_id); NR_CellGroupConfig_t *secondaryCellGroup = UE_list->secondaryCellGroup[UE_id]; int bwp_id=1; NR_BWP_Uplink_t *ubwp=secondaryCellGroup->spCellConfig->spCellConfigDedicated->uplinkConfig->uplinkBWP_ToAddModList->list.array[bwp_id-1]; nfapi_nr_ul_tti_request_t *UL_tti_req = &RC.nrmac[Mod_idP]->UL_tti_req[0]; NR_sched_pucch *curr_pucch = UE_list->UE_sched_ctrl[UE_id].sched_pucch; NR_sched_pucch *temp_pucch; int release_pucch = 0; if (curr_pucch != NULL) { if ((frameP == curr_pucch->frame) && (slotP == curr_pucch->ul_slot)) { UL_tti_req->SFN = frameP; UL_tti_req->Slot = slotP; UL_tti_req->pdus_list[UL_tti_req->n_pdus].pdu_type = NFAPI_NR_UL_CONFIG_PUCCH_PDU_TYPE; UL_tti_req->pdus_list[UL_tti_req->n_pdus].pdu_size = sizeof(nfapi_nr_pucch_pdu_t); nfapi_nr_pucch_pdu_t *pucch_pdu = &UL_tti_req->pdus_list[UL_tti_req->n_pdus].pucch_pdu; memset(pucch_pdu,0,sizeof(nfapi_nr_pucch_pdu_t)); UL_tti_req->n_pdus+=1; O_ack = curr_pucch->dai_c; O_uci = O_ack; // for now we are just sending acknacks in pucch nr_configure_pucch(pucch_pdu, scc, ubwp, curr_pucch->resource_indicator, O_uci, O_ack, SR_flag); release_pucch = 1; } } if (release_pucch) { temp_pucch = UE_list->UE_sched_ctrl[UE_id].sched_pucch; UE_list->UE_sched_ctrl[UE_id].sched_pucch = UE_list->UE_sched_ctrl[UE_id].sched_pucch->next_sched_pucch; free(temp_pucch); } } bool is_xlsch_in_slot(uint64_t bitmap, sub_frame_t slot){ if((bitmap>>slot)&0x01) return true; else return false; } void gNB_dlsch_ulsch_scheduler(module_id_t module_idP, frame_t frame_rxP, sub_frame_t slot_rxP, frame_t frame_txP, sub_frame_t slot_txP){ //printf("gNB_dlsch_ulsch_scheduler frameRX %d slotRX %d frameTX %d slotTX %d\n",frame_rxP,slot_rxP,frame_txP,slot_txP); protocol_ctxt_t ctxt; PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_YES, NOT_A_RNTI, frame_txP, slot_txP,module_idP); int CC_id, UE_id = 0; gNB_MAC_INST *gNB = RC.nrmac[module_idP]; NR_UE_list_t *UE_list = &gNB->UE_list; NR_UE_sched_ctrl_t *ue_sched_ctl = &UE_list->UE_sched_ctrl[UE_id]; NR_COMMON_channels_t *cc = gNB->common_channels; NR_sched_pucch *pucch_sched = (NR_sched_pucch*) malloc(sizeof(NR_sched_pucch)); start_meas(&RC.nrmac[module_idP]->eNB_scheduler); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER,VCD_FUNCTION_IN); pdcp_run(&ctxt); //rrc_rx_tx(&ctxt, CC_id); RC.nrmac[module_idP]->frame = frame_rxP; RC.nrmac[module_idP]->slot = slot_rxP; // Check if there are downlink symbols in the slot, if (is_nr_DL_slot(cc->ServingCellConfigCommon,slot_txP)) { memset(RC.nrmac[module_idP]->cce_list[1][0],0,MAX_NUM_CCE*sizeof(int)); for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) { //mbsfn_status[CC_id] = 0; // clear vrb_maps memset(cc[CC_id].vrb_map, 0, 100); memset(cc[CC_id].vrb_map_UL, 0, 100); clear_nr_nfapi_information(RC.nrmac[module_idP], CC_id, frame_txP, slot_txP); } // refresh UE list based on UEs dropped by PHY in previous subframe /* for (i = 0; i < MAX_MOBILES_PER_GNB; i++) { if (UE_list->active[i]) { nfapi_nr_config_request_t *cfg = &RC.nrmac[module_idP]->config[CC_id]; rnti = 0;//UE_RNTI(module_idP, i); CC_id = 0;//UE_PCCID(module_idP, i); } //END if (UE_list->active[i]) } //END for (i = 0; i < MAX_MOBILES_PER_GNB; i++) */ // This schedules MIB if((slot_txP == 0) && (frame_txP & 7) == 0){ schedule_nr_mib(module_idP, frame_txP, slot_txP); } // TbD once RACH is available, start ta_timer when UE is connected #if 0 if (ue_sched_ctl->ta_timer) ue_sched_ctl->ta_timer--; if (ue_sched_ctl->ta_timer == 0) { gNB->ta_command = ue_sched_ctl->ta_update; /* if time is up, then set the timer to not send it for 5 frames // regardless of the TA value */ ue_sched_ctl->ta_timer = 100; /* reset ta_update */ ue_sched_ctl->ta_update = 31; /* MAC CE flag indicating TA length */ gNB->ta_len = 2; } #endif // Phytest scheduling if (get_softmodem_params()->phy_test && slot_txP==1){ nr_schedule_uss_dlsch_phytest(module_idP, frame_txP, slot_txP, pucch_sched, NULL); // resetting ta flag gNB->ta_len = 0; } /* // Allocate CCEs for good after scheduling is done for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) allocate_CCEs(module_idP, CC_id, subframeP, 0); */ } //is_nr_DL_slot if (is_nr_UL_slot(cc->ServingCellConfigCommon,slot_rxP)) { if (get_softmodem_params()->phy_test && slot_rxP==8){ nr_schedule_uss_ulsch_phytest(module_idP, frame_rxP, slot_rxP); } } stop_meas(&RC.nrmac[module_idP]->eNB_scheduler); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER,VCD_FUNCTION_OUT); }