/*
* 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 eNB_scheduler.c
* \brief eNB scheduler top level function operates on per subframe basis
* \author Navid Nikaein and Raymond Knopp
* \date 2010 - 2014
* \email: navid.nikaein@eurecom.fr
* \version 0.5
* @ingroup _mac
*/
#include "assertions.h"
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"
#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/extern.h"
#include "LAYER2/MAC/proto.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 "LAYER2/MAC/pre_processor.c"
#include "pdcp.h"
//Agent-related headers
#include "flexran_agent_extern.h"
#include "flexran_agent_mac.h"
#if defined(ENABLE_ITTI)
#include "intertask_interface.h"
#endif
#define ENABLE_MAC_PAYLOAD_DEBUG
#define DEBUG_eNB_SCHEDULER 1
extern RAN_CONTEXT_t RC;
uint16_t pdcch_order_table[6] = { 31, 31, 511, 2047, 2047, 8191 };
void
schedule_SRS(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &eNB->UE_list;
nfapi_ul_config_request_body_t *ul_req;
int CC_id, UE_id;
COMMON_channels_t *cc = RC.mac[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 < NUMBER_OF_UE_MAX; UE_id++) {
if (RC.mac[module_idP]->UE_list.active[UE_id] != TRUE)
continue;
ul_req = &RC.mac[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.mac[module_idP]->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
RC.mac[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<<tmp) & deltaTSFC)
} // SRS config
}
}
void
schedule_CSI(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &eNB->UE_list;
COMMON_channels_t *cc;
nfapi_ul_config_request_body_t *ul_req;
int CC_id, UE_id;
struct CQI_ReportPeriodic *cqi_ReportPeriodic;
uint16_t Npd, N_OFFSET_CQI;
int H;
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
cc = &eNB->common_channels[CC_id];
for (UE_id = 0; UE_id < NUMBER_OF_UE_MAX; UE_id++) {
if (UE_list->active[UE_id] != TRUE)
continue;
ul_req = &RC.mac[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 (UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->cqi_ReportConfig) {
if ((cqi_ReportPeriodic = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->cqi_ReportConfig->cqi_ReportPeriodic) != NULL
&& (cqi_ReportPeriodic->present != CQI_ReportPeriodic_PR_release)) {
//Rel8 Periodic CQI/PMI/RI reporting
get_csi_params(cc, cqi_ReportPeriodic, &Npd,
&N_OFFSET_CQI, &H);
if ((((frameP * 10) + subframeP) % Npd) == N_OFFSET_CQI) { // CQI opportunity
UE_list->UE_sched_ctrl[UE_id].feedback_cnt[CC_id] = (((frameP * 10) + subframeP) / Npd) % H;
// Program CQI
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_UCI_CQI_PDU_TYPE;
ul_config_pdu->pdu_size = 2 + (uint8_t) (2 + sizeof(nfapi_ul_config_uci_cqi_pdu));
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_CQI_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.pucch_index = cqi_ReportPeriodic->choice.setup.cqi_PUCCH_ResourceIndex;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.dl_cqi_pmi_size = get_rel8_dl_cqi_pmi_size(&UE_list->UE_sched_ctrl[UE_id], CC_id, cc,
get_tmode(module_idP, CC_id, UE_id),
cqi_ReportPeriodic);
ul_req->number_of_pdus++;
ul_req->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
#if defined(Rel10) || defined(Rel14)
// PUT rel10-13 UCI options here
#endif
} else
if ((cqi_ReportPeriodic->choice.setup.ri_ConfigIndex)
&& ((((frameP * 10) + subframeP) % ((H * Npd) << (*cqi_ReportPeriodic->choice.setup.ri_ConfigIndex / 161))) == N_OFFSET_CQI + (*cqi_ReportPeriodic->choice.setup.ri_ConfigIndex % 161))) { // RI opportunity
// Program RI
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_UCI_CQI_PDU_TYPE;
ul_config_pdu->pdu_size = 2 + (uint8_t) (2 + sizeof(nfapi_ul_config_uci_cqi_pdu));
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.ue_information.ue_information_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_CQI_INFORMATION_REL8_TAG;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.pucch_index = cqi_ReportPeriodic->choice.setup.cqi_PUCCH_ResourceIndex;
ul_config_pdu->uci_cqi_pdu.cqi_information.cqi_information_rel8.dl_cqi_pmi_size = (cc->p_eNB == 2) ? 1 : 2;
RC.mac[module_idP]->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
ul_req->number_of_pdus++;
ul_req->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
}
} // if ((cqi_ReportPeriodic = cqi_ReportConfig->cqi_ReportPeriodic)!=NULL) {
} // if (UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->cqi_ReportConfig)
} // for (UE_id=UE_list->head; UE_id>=0; UE_id=UE_list->next[UE_id]) {
} // for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
}
void
schedule_SR(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{
eNB_MAC_INST *eNB = RC.mac[module_idP];
UE_list_t *UE_list = &eNB->UE_list;
nfapi_ul_config_request_t *ul_req;
nfapi_ul_config_request_body_t *ul_req_body;
int CC_id;
int UE_id;
SchedulingRequestConfig_t *SRconfig;
int skip_ue;
int is_harq;
nfapi_ul_config_sr_information sr;
int i;
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
RC.mac[module_idP]->UL_req[CC_id].sfn_sf = (frameP << 4) + subframeP;
for (UE_id = 0; UE_id < NUMBER_OF_UE_MAX; UE_id++) {
if (RC.mac[module_idP]->UE_list.active[UE_id] != TRUE) continue;
ul_req = &RC.mac[module_idP]->UL_req[CC_id];
ul_req_body = &ul_req->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 ((SRconfig = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->schedulingRequestConfig) != NULL) {
if (SRconfig->present == SchedulingRequestConfig_PR_setup) {
if (SRconfig->choice.setup.sr_ConfigIndex <= 4) { // 5 ms SR period
if ((subframeP % 5) != SRconfig->choice.setup.sr_ConfigIndex) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 14) { // 10 ms SR period
if (subframeP != (SRconfig->choice.setup.sr_ConfigIndex - 5)) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 34) { // 20 ms SR period
if ((10 * (frameP & 1) + subframeP) != (SRconfig->choice.setup.sr_ConfigIndex - 15)) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 74) { // 40 ms SR period
if ((10 * (frameP & 3) + subframeP) != (SRconfig->choice.setup.sr_ConfigIndex - 35)) continue;
} else if (SRconfig->choice.setup.sr_ConfigIndex <= 154) { // 80 ms SR period
if ((10 * (frameP & 7) + subframeP) != (SRconfig->choice.setup.sr_ConfigIndex - 75)) continue;
}
} // SRconfig->present == SchedulingRequestConfig_PR_setup)
} // SRconfig = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->schedulingRequestConfig)!=NULL)
// if we get here there is some PUCCH1 reception to schedule for SR
skip_ue = 0;
is_harq = 0;
// check that there is no existing UL grant for ULSCH which overrides the SR
for (i = 0; i < ul_req_body->number_of_pdus; i++) {
if (((ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_PDU_TYPE) ||
(ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_HARQ_PDU_TYPE) ||
(ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE) ||
(ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE)) &&
(ul_req_body->ul_config_pdu_list[i].ulsch_pdu.ulsch_pdu_rel8.rnti == UE_list->UE_template[CC_id][UE_id].rnti)) {
skip_ue = 1;
break;
}
/* if there is already an HARQ pdu, convert to SR_HARQ */
else if ((ul_req_body->ul_config_pdu_list[i].pdu_type == NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE) &&
(ul_req_body->ul_config_pdu_list[i].uci_harq_pdu.ue_information.ue_information_rel8.rnti == UE_list->UE_template[CC_id][UE_id].rnti)) {
is_harq = 1;
break;
}
}
// drop the allocation because ULSCH with handle it with BSR
if (skip_ue == 1) continue;
LOG_D(MAC,"Frame %d, Subframe %d : Scheduling SR for UE %d/%x is_harq:%d\n",frameP,subframeP,UE_id,UE_list->UE_template[CC_id][UE_id].rnti, is_harq);
// check Rel10 or Rel8 SR
#if defined(Rel10) || defined(Rel14)
if ((UE_list-> UE_template[CC_id][UE_id].physicalConfigDedicated->ext2)
&& (UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->ext2->schedulingRequestConfig_v1020)
&& (UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->ext2->schedulingRequestConfig_v1020)) {
sr.sr_information_rel10.tl.tag = NFAPI_UL_CONFIG_REQUEST_SR_INFORMATION_REL10_TAG;
sr.sr_information_rel10.number_of_pucch_resources = 1;
sr.sr_information_rel10.pucch_index_p1 = *UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->ext2->schedulingRequestConfig_v1020->sr_PUCCH_ResourceIndexP1_r10;
LOG_D(MAC,"REL10 PUCCH INDEX P1:%d\n", sr.sr_information_rel10.pucch_index_p1);
} else
#endif
{
sr.sr_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_SR_INFORMATION_REL8_TAG;
sr.sr_information_rel8.pucch_index = UE_list->UE_template[CC_id][UE_id].physicalConfigDedicated->schedulingRequestConfig->choice.setup.sr_PUCCH_ResourceIndex;
LOG_D(MAC,"REL8 PUCCH INDEX:%d\n", sr.sr_information_rel8.pucch_index);
}
/* if there is already an HARQ pdu, convert to SR_HARQ */
if (is_harq) {
nfapi_ul_config_harq_information h = ul_req_body->ul_config_pdu_list[i].uci_harq_pdu.harq_information;
ul_req_body->ul_config_pdu_list[i].pdu_type = NFAPI_UL_CONFIG_UCI_SR_HARQ_PDU_TYPE;
ul_req_body->ul_config_pdu_list[i].uci_sr_harq_pdu.sr_information = sr;
ul_req_body->ul_config_pdu_list[i].uci_sr_harq_pdu.harq_information = h;
} else {
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].pdu_type = NFAPI_UL_CONFIG_UCI_SR_PDU_TYPE;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel8.tl.tag = NFAPI_UL_CONFIG_REQUEST_UE_INFORMATION_REL8_TAG;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel8.rnti = UE_list->UE_template[CC_id][UE_id].rnti;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel11.tl.tag = 0;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.ue_information.ue_information_rel13.tl.tag = 0;
ul_req_body->ul_config_pdu_list[ul_req_body->number_of_pdus].uci_sr_pdu.sr_information = sr;
ul_req_body->number_of_pdus++;
} /* if (is_harq) */
ul_req_body->tl.tag = NFAPI_UL_CONFIG_REQUEST_BODY_TAG;
} // for (UE_id=UE_list->head; UE_id>=0; UE_id=UE_list->next[UE_id])
} // for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++)
}
extern uint8_t nfapi_mode;
void
check_ul_failure(module_id_t module_idP, int CC_id, int UE_id,
frame_t frameP, sub_frame_t subframeP)
{
UE_list_t *UE_list = &RC.mac[module_idP]->UE_list;
nfapi_dl_config_request_t *DL_req = &RC.mac[module_idP]->DL_req[0];
uint16_t rnti = UE_RNTI(module_idP, UE_id);
COMMON_channels_t *cc = RC.mac[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)) {
if ((UE_list->UE_sched_ctrl[UE_id].ul_failure_timer&1023) == 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_dl_config_request_pdu_t *dl_config_pdu = &DL_req[CC_id].dl_config_request_body.dl_config_pdu_list[DL_req[CC_id].dl_config_request_body.number_pdu];
memset((void *) dl_config_pdu, 0,sizeof(nfapi_dl_config_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_CONFIG_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 = pdcch_order_table[cc[CC_id].mib->message.dl_Bandwidth];
DL_req[CC_id].dl_config_request_body.number_dci++;
DL_req[CC_id].dl_config_request_body.number_pdu++;
DL_req[CC_id].dl_config_request_body.tl.tag = NFAPI_DL_CONFIG_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
if ((UE_list->UE_sched_ctrl[UE_id].ul_failure_timer&1023) == 0)
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
UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer++;
if(UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer > (U_PLANE_INACTIVITY_VALUE*subframe_num(&RC.eNB[module_idP][CC_id]->frame_parms))){
LOG_D(MAC,"UE %d rnti %x: U-Plane Failure after repeated PDCCH orders: Triggering RRC \n",UE_id,rnti);
mac_eNB_rrc_uplane_failure(module_idP,CC_id,frameP,subframeP,rnti);
UE_list->UE_sched_ctrl[UE_id].uplane_inactivity_timer = 0;
}// time > 60s
}
void
clear_nfapi_information(eNB_MAC_INST * eNB, int CC_idP,
frame_t frameP, sub_frame_t subframeP)
{
nfapi_dl_config_request_t *DL_req = &eNB->DL_req[0];
nfapi_ul_config_request_t *UL_req = &eNB->UL_req[0];
nfapi_hi_dci0_request_t *HI_DCI0_req = &eNB->HI_DCI0_req[0];
nfapi_tx_request_t *TX_req = &eNB->TX_req[0];
eNB->pdu_index[CC_idP] = 0;
if (nfapi_mode==0 || nfapi_mode == 1) { // monolithic or PNF
DL_req[CC_idP].dl_config_request_body.number_pdcch_ofdm_symbols = 1;
DL_req[CC_idP].dl_config_request_body.number_dci = 0;
DL_req[CC_idP].dl_config_request_body.number_pdu = 0;
DL_req[CC_idP].dl_config_request_body.number_pdsch_rnti = 0;
DL_req[CC_idP].dl_config_request_body.transmission_power_pcfich = 6000;
HI_DCI0_req[CC_idP].hi_dci0_request_body.sfnsf = subframeP + (frameP<<4);
HI_DCI0_req[CC_idP].hi_dci0_request_body.number_of_dci = 0;
UL_req[CC_idP].ul_config_request_body.number_of_pdus = 0;
UL_req[CC_idP].ul_config_request_body.rach_prach_frequency_resources = 0; // ignored, handled by PHY for now
UL_req[CC_idP].ul_config_request_body.srs_present = 0; // ignored, handled by PHY for now
TX_req[CC_idP].tx_request_body.number_of_pdus = 0;
}
}
void
copy_ulreq(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
{
int CC_id;
eNB_MAC_INST *mac = RC.mac[module_idP];
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
nfapi_ul_config_request_t *ul_req_tmp = &mac->UL_req_tmp[CC_id][subframeP];
nfapi_ul_config_request_t *ul_req = &mac->UL_req[CC_id];
nfapi_ul_config_request_pdu_t *ul_req_pdu = ul_req->ul_config_request_body.ul_config_pdu_list;
*ul_req = *ul_req_tmp;
LOG_D(MAC,"SFN.SF %d.%d: Copying %d UL pdus to UL_req (sfn_sf %d.%d)\n",frameP,subframeP,ul_req->ul_config_request_body.number_of_pdus,ul_req->sfn_sf>>4,ul_req->sfn_sf&0xf);
// Restore the pointer
ul_req->ul_config_request_body.ul_config_pdu_list = ul_req_pdu;
ul_req->sfn_sf = (frameP<<4) + subframeP;
ul_req_tmp->ul_config_request_body.number_of_pdus = 0;
if (ul_req->ul_config_request_body.number_of_pdus>0)
{
LOG_D(MAC, "%s() active NOW (frameP:%d subframeP:%d) pdus:%d\n", __FUNCTION__, frameP, subframeP, 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
eNB_dlsch_ulsch_scheduler(module_id_t module_idP, frame_t frameP,
sub_frame_t subframeP)
{
int mbsfn_status[MAX_NUM_CCs];
protocol_ctxt_t ctxt;
int CC_id, i = -1;
UE_list_t *UE_list = &RC.mac[module_idP]->UE_list;
rnti_t rnti;
COMMON_channels_t *cc = RC.mac[module_idP]->common_channels;
start_meas(&RC.mac[module_idP]->eNB_scheduler);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER,
VCD_FUNCTION_IN);
RC.mac[module_idP]->frame = frameP;
RC.mac[module_idP]->subframe = subframeP;
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);
#if defined(Rel10) || defined(Rel14)
cc[CC_id].mcch_active = 0;
#endif
clear_nfapi_information(RC.mac[module_idP], CC_id, frameP, subframeP);
}
// refresh UE list based on UEs dropped by PHY in previous subframe
for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
if (UE_list->active[i] != TRUE)
continue;
rnti = UE_RNTI(module_idP, i);
CC_id = UE_PCCID(module_idP, i);
if ((frameP == 0) && (subframeP == 0)) {
LOG_I(MAC,
"UE rnti %x : %s, PHR %d dB DL CQI %d PUSCH SNR %d PUCCH SNR %d\n",
rnti,
UE_list->UE_sched_ctrl[i].ul_out_of_sync ==
0 ? "in synch" : "out of sync",
UE_list->UE_template[CC_id][i].phr_info,
UE_list->UE_sched_ctrl[i].dl_cqi[CC_id],
(UE_list->UE_sched_ctrl[i].pusch_snr[CC_id] - 128) / 2,
(UE_list->UE_sched_ctrl[i].pucch1_snr[CC_id] - 128) / 2);
}
RC.eNB[module_idP][CC_id]->pusch_stats_bsr[i][(frameP * 10) +
subframeP] = -63;
if (i == UE_list->head)
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME
(VCD_SIGNAL_DUMPER_VARIABLES_UE0_BSR,
RC.eNB[module_idP][CC_id]->
pusch_stats_bsr[i][(frameP * 10) + subframeP]);
// increment this, it is cleared when we receive an sdu
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].ul_inactivity_timer++;
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].cqi_req_timer++;
LOG_D(MAC, "UE %d/%x : ul_inactivity %d, cqi_req %d\n", i, rnti,
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].
ul_inactivity_timer,
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].cqi_req_timer);
check_ul_failure(module_idP, CC_id, i, frameP, subframeP);
if (RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].ue_reestablishment_reject_timer > 0) {
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].ue_reestablishment_reject_timer++;
if(RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].ue_reestablishment_reject_timer >=
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].ue_reestablishment_reject_timer_thres) {
RC.mac[module_idP]->UE_list.UE_sched_ctrl[i].ue_reestablishment_reject_timer = 0;
for (int ue_id_l = 0; ue_id_l < NUMBER_OF_UE_MAX; ue_id_l++) {
if (reestablish_rnti_map[ue_id_l][0] == rnti) {
// clear currentC-RNTI from map
reestablish_rnti_map[ue_id_l][0] = 0;
reestablish_rnti_map[ue_id_l][1] = 0;
break;
}
}
for (int ii=0; ii<NUMBER_OF_UE_MAX; ii++) {
LTE_eNB_ULSCH_t *ulsch = RC.eNB[module_idP][CC_id]->ulsch[ii];
if((ulsch != NULL) && (ulsch->rnti == rnti)){
LOG_I(MAC, "clean_eNb_ulsch UE %x \n", rnti);
clean_eNb_ulsch(ulsch);
}
}
for (int ii=0; ii<NUMBER_OF_UE_MAX; ii++) {
LTE_eNB_DLSCH_t *dlsch = RC.eNB[module_idP][CC_id]->dlsch[ii][0];
if((dlsch != NULL) && (dlsch->rnti == rnti)){
LOG_I(MAC, "clean_eNb_dlsch UE %x \n", rnti);
clean_eNb_dlsch(dlsch);
}
}
for(int j = 0; j < 10; j++){
nfapi_ul_config_request_body_t *ul_req_tmp = NULL;
ul_req_tmp = &RC.mac[module_idP]->UL_req_tmp[CC_id][j].ul_config_request_body;
if(ul_req_tmp){
int pdu_number = ul_req_tmp->number_of_pdus;
for(int pdu_index = pdu_number-1; pdu_index >= 0; pdu_index--){
if(ul_req_tmp->ul_config_pdu_list[pdu_index].ulsch_pdu.ulsch_pdu_rel8.rnti == rnti){
LOG_I(MAC, "remove UE %x from ul_config_pdu_list %d/%d\n", rnti, pdu_index, pdu_number);
if(pdu_index < pdu_number -1){
memcpy(&ul_req_tmp->ul_config_pdu_list[pdu_index], &ul_req_tmp->ul_config_pdu_list[pdu_index+1], (pdu_number-1-pdu_index) * sizeof(nfapi_ul_config_request_pdu_t));
}
ul_req_tmp->number_of_pdus--;
}
}
}
}
rrc_mac_remove_ue(module_idP,rnti);
}
}
}
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_YES,
NOT_A_RNTI, frameP, subframeP,
module_idP);
pdcp_run(&ctxt);
rrc_rx_tx(&ctxt, CC_id);
#if defined(Rel10) || defined(Rel14)
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
if (cc[CC_id].MBMS_flag > 0) {
start_meas(&RC.mac[module_idP]->schedule_mch);
mbsfn_status[CC_id] = schedule_MBMS(module_idP, CC_id, frameP, subframeP);
stop_meas(&RC.mac[module_idP]->schedule_mch);
}
}
#endif
// This schedules MIB
if ((subframeP == 0) && (frameP & 3) == 0)
schedule_mib(module_idP, frameP, subframeP);
// This schedules SI for legacy LTE and eMTC starting in subframeP
schedule_SI(module_idP, frameP, subframeP);
// This schedules Paging in subframeP
schedule_PCH(module_idP,frameP,subframeP);
// This schedules Random-Access for legacy LTE and eMTC starting in subframeP
schedule_RA(module_idP, frameP, subframeP);
// copy previously scheduled UL resources (ULSCH + HARQ)
copy_ulreq(module_idP, frameP, subframeP);
// This schedules SRS in subframeP
schedule_SRS(module_idP, frameP, subframeP);
// This schedules ULSCH in subframeP (dci0)
schedule_ulsch(module_idP, frameP, subframeP);
// This schedules UCI_SR in subframeP
schedule_SR(module_idP, frameP, subframeP);
// This schedules UCI_CSI in subframeP
schedule_CSI(module_idP, frameP, subframeP);
// This schedules DLSCH in subframeP
schedule_dlsch(module_idP, frameP, subframeP, mbsfn_status);
if (RC.flexran[module_idP]->enabled)
flexran_agent_send_update_stats(module_idP);
// 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);
stop_meas(&RC.mac[module_idP]->eNB_scheduler);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME
(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER,
VCD_FUNCTION_OUT);
}