/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see .
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
/*! \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"
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif
#define ENABLE_MAC_PAYLOAD_DEBUG
#define DEBUG_eNB_SCHEDULER 1
//#define DEBUG_HEADER_PARSING 1
//#define DEBUG_PACKET_TRACE 1
/*
#ifndef USER_MODE
#define msg debug_msg
#endif
*/
void eNB_dlsch_ulsch_scheduler(module_id_t module_idP,uint8_t cooperation_flag, frame_t frameP, sub_frame_t subframeP) //, int calibration_flag) {
{
unsigned int nprb[MAX_NUM_CCs];
unsigned int nCCE[MAX_NUM_CCs];
int mbsfn_status[MAX_NUM_CCs];
uint32_t RBalloc[MAX_NUM_CCs];
protocol_ctxt_t ctxt;
#ifdef EXMIMO
int ret;
#endif
#if defined(ENABLE_ITTI)
MessageDef *msg_p;
const char *msg_name;
instance_t instance;
int result;
#endif
DCI_PDU *DCI_pdu[MAX_NUM_CCs];
int CC_id,i,next_i;
UE_list_t *UE_list=&eNB_mac_inst[module_idP].UE_list;
rnti_t rnti;
LOG_D(MAC,"[eNB %d] Frame %d, Subframe %d, entering MAC scheduler (UE_list->head %d)\n",module_idP, frameP, subframeP,UE_list->head);
start_meas(&eNB_mac_inst[module_idP].eNB_scheduler);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER,VCD_FUNCTION_IN);
for (CC_id=0; CC_idhead;
while (i>=0) {
rnti = UE_RNTI(module_idP, i);
CC_id = UE_PCCID(module_idP, i);
LOG_D(MAC,"UE %d: rnti %x (%p)\n", i, rnti,
mac_xface->get_eNB_UE_stats(module_idP, CC_id, rnti));
next_i= UE_list->next[i];
if (mac_xface->get_eNB_UE_stats(module_idP, CC_id, rnti)==NULL) {
mac_remove_ue(module_idP, i, frameP, subframeP);
}
i = next_i;
}
#if defined(ENABLE_ITTI)
do {
// Checks if a message has been sent to MAC sub-task
itti_poll_msg (TASK_MAC_ENB, &msg_p);
if (msg_p != NULL) {
msg_name = ITTI_MSG_NAME (msg_p);
instance = ITTI_MSG_INSTANCE (msg_p);
switch (ITTI_MSG_ID(msg_p)) {
case MESSAGE_TEST:
LOG_D(MAC, "Received %s\n", ITTI_MSG_NAME(msg_p));
break;
case RRC_MAC_BCCH_DATA_REQ:
LOG_D(MAC, "Received %s from %s: instance %d, frameP %d, eNB_index %d\n",
msg_name, ITTI_MSG_ORIGIN_NAME(msg_p), instance,
RRC_MAC_BCCH_DATA_REQ (msg_p).frame, RRC_MAC_BCCH_DATA_REQ (msg_p).enb_index);
// TODO process BCCH data req.
break;
case RRC_MAC_CCCH_DATA_REQ:
LOG_D(MAC, "Received %s from %s: instance %d, frameP %d, eNB_index %d\n",
msg_name, ITTI_MSG_ORIGIN_NAME(msg_p), instance,
RRC_MAC_CCCH_DATA_REQ (msg_p).frame, RRC_MAC_CCCH_DATA_REQ (msg_p).enb_index);
// TODO process CCCH data req.
break;
#ifdef Rel10
case RRC_MAC_MCCH_DATA_REQ:
LOG_D(MAC, "Received %s from %s: instance %d, frameP %d, eNB_index %d, mbsfn_sync_area %d\n",
msg_name, ITTI_MSG_ORIGIN_NAME(msg_p), instance,
RRC_MAC_MCCH_DATA_REQ (msg_p).frame, RRC_MAC_MCCH_DATA_REQ (msg_p).enb_index, RRC_MAC_MCCH_DATA_REQ (msg_p).mbsfn_sync_area);
// TODO process MCCH data req.
break;
#endif
default:
LOG_E(MAC, "Received unexpected message %s\n", msg_name);
break;
}
result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
} while(msg_p != NULL);
#endif
// clear DCI and BCCH contents before scheduling
for (CC_id=0; CC_idNum_common_dci = 0;
DCI_pdu[CC_id]->Num_ue_spec_dci = 0;
eNB_mac_inst[module_idP].common_channels[CC_id].bcch_active = 0;
#ifdef Rel10
eNB_mac_inst[module_idP].common_channels[CC_id].mcch_active =0;
#endif
eNB_mac_inst[module_idP].frame = frameP;
eNB_mac_inst[module_idP].subframe = subframeP;
}
//if (subframeP%5 == 0)
//#ifdef EXMIMO
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, ENB_FLAG_YES, NOT_A_RNTI, frameP, 0,module_idP);
pdcp_run(&ctxt);
//#endif
// check HO
rrc_rx_tx(&ctxt,
0, // eNB index, unused in eNB
CC_id);
#ifdef Rel10
for (CC_id=0; CC_id0) {
start_meas(&eNB_mac_inst[module_idP].schedule_mch);
mbsfn_status[CC_id] = schedule_MBMS(module_idP,CC_id,frameP,subframeP);
stop_meas(&eNB_mac_inst[module_idP].schedule_mch);
}
}
#endif
// refresh UE list based on UEs dropped by PHY in previous subframe
/*
i=UE_list->head;
while (i>=0) {
next_i = UE_list->next[i];
LOG_T(MAC,"UE %d : rnti %x, stats %p\n",i,UE_RNTI(module_idP,i),mac_xface->get_eNB_UE_stats(module_idP,0,UE_RNTI(module_idP,i)));
if (mac_xface->get_eNB_UE_stats(module_idP,0,UE_RNTI(module_idP,i))==NULL) {
mac_remove_ue(module_idP,i,frameP);
}
i=next_i;
}
*/
switch (subframeP) {
case 0:
// FDD/TDD Schedule Downlink RA transmissions (RA response, Msg4 Contention resolution)
// Schedule ULSCH for FDD or subframeP 4 (TDD config 0,3,6)
// Schedule Normal DLSCH
schedule_RA(module_idP,frameP,subframeP,2,nprb,nCCE);
if (mac_xface->lte_frame_parms->frame_type == FDD) { //FDD
schedule_ulsch(module_idP,frameP,cooperation_flag,0,4,nCCE);//,calibration_flag);
} else if ((mac_xface->lte_frame_parms->tdd_config == TDD) || //TDD
(mac_xface->lte_frame_parms->tdd_config == 3) ||
(mac_xface->lte_frame_parms->tdd_config == 6)) {
//schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,4,nCCE);//,calibration_flag);
}
// schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,1,mbsfn_status);
break;
case 1:
// TDD, schedule UL for subframeP 7 (TDD config 0,1) / subframeP 8 (TDD Config 6)
// FDD, schedule normal UL/DLSCH
if (mac_xface->lte_frame_parms->frame_type == TDD) { // TDD
switch (mac_xface->lte_frame_parms->tdd_config) {
case 0:
case 1:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,7,nCCE);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
case 6:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,8,nCCE);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
default:
break;
}
} else { //FDD
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
schedule_ulsch(module_idP,frameP,cooperation_flag,1,5,nCCE);
}
break;
case 2:
// TDD, nothing
// FDD, normal UL/DLSCH
if (mac_xface->lte_frame_parms->frame_type == FDD) { //FDD
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
schedule_ulsch(module_idP,frameP,cooperation_flag,2,6,nCCE);
}
break;
case 3:
// TDD Config 2, ULSCH for subframeP 7
// TDD Config 2/5 normal DLSCH
// FDD, normal UL/DLSCH
if (mac_xface->lte_frame_parms->frame_type == TDD) {
switch (mac_xface->lte_frame_parms->tdd_config) {
case 2:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,7,nCCE);
// no break here!
case 5:
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
default:
break;
}
} else { //FDD
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
schedule_ulsch(module_idP,frameP,cooperation_flag,3,7,nCCE);
}
break;
case 4:
// TDD Config 1, ULSCH for subframeP 8
// TDD Config 1/2/4/5 DLSCH
// FDD UL/DLSCH
if (mac_xface->lte_frame_parms->frame_type == 1) { // TDD
switch (mac_xface->lte_frame_parms->tdd_config) {
case 1:
// schedule_RA(module_idP,frameP,subframeP,nprb,nCCE);
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,8,nCCE);
// no break here!
case 2:
// no break here!
case 4:
// no break here!
case 5:
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,1,mbsfn_status);
break;
default:
break;
}
} else {
if (mac_xface->lte_frame_parms->frame_type == FDD) { //FDD
// schedule_RA(module_idP,frameP, subframeP, 0, nprb, nCCE);
// schedule_ulsch(module_idP, frameP, cooperation_flag, 4, 8, nCCE);
schedule_ue_spec(module_idP, frameP, subframeP, nprb, nCCE, mbsfn_status);
fill_DLSCH_dci(module_idP, frameP, subframeP, RBalloc, 1, mbsfn_status);
}
}
break;
case 5:
// TDD/FDD Schedule SI
// TDD Config 0,6 ULSCH for subframes 9,3 resp.
// TDD normal DLSCH
// FDD normal UL/DLSCH
schedule_SI(module_idP,frameP,nprb,nCCE);
//schedule_RA(module_idP,frameP,subframeP,5,nprb,nCCE);
if (mac_xface->lte_frame_parms->frame_type == FDD) {
schedule_RA(module_idP,frameP,subframeP,1,nprb,nCCE);
// schedule_ulsch(module_idP,frameP,cooperation_flag,5,9,nCCE);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,1,mbsfn_status);
} else if ((mac_xface->lte_frame_parms->tdd_config == 0) || // TDD Config 0
(mac_xface->lte_frame_parms->tdd_config == 6)) { // TDD Config 6
//schedule_ulsch(module_idP,cooperation_flag,subframeP,nCCE);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
} else {
//schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
}
break;
case 6:
// TDD Config 0,1,6 ULSCH for subframes 2,3
// TDD Config 3,4,5 Normal DLSCH
// FDD normal ULSCH/DLSCH
if (mac_xface->lte_frame_parms->frame_type == TDD) { // TDD
switch (mac_xface->lte_frame_parms->tdd_config) {
case 0:
break;
case 1:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,2,nCCE);
// schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
case 6:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,3,nCCE);
// schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
case 5:
schedule_RA(module_idP,frameP,subframeP,2,nprb,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,1,mbsfn_status);
break;
case 3:
case 4:
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
default:
break;
}
} else { //FDD
// schedule_ulsch(module_idP,frameP,cooperation_flag,6,0,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
}
break;
case 7:
// TDD Config 3,4,5 Normal DLSCH
// FDD Normal UL/DLSCH
if (mac_xface->lte_frame_parms->frame_type == TDD) { // TDD
switch (mac_xface->lte_frame_parms->tdd_config) {
case 3:
case 4:
schedule_RA(module_idP,frameP,subframeP,3,nprb,nCCE); // 3 = Msg3 subframeP, not
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,1,mbsfn_status);
break;
case 5:
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
default:
break;
}
} else { //FDD
//schedule_ulsch(module_idP,frameP,cooperation_flag,7,1,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
}
break;
case 8:
// TDD Config 2,3,4,5 ULSCH for subframeP 2
//
// FDD Normal UL/DLSCH
if (mac_xface->lte_frame_parms->frame_type == TDD) { // TDD
switch (mac_xface->lte_frame_parms->tdd_config) {
case 2:
case 3:
case 4:
case 5:
// schedule_RA(module_idP,subframeP,nprb,nCCE);
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,2,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
default:
break;
}
} else { //FDD
//schedule_ulsch(module_idP,frameP,cooperation_flag,8,2,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
}
break;
case 9:
// TDD Config 1,3,4,6 ULSCH for subframes 3,3,3,4
if (mac_xface->lte_frame_parms->frame_type == TDD) {
switch (mac_xface->lte_frame_parms->tdd_config) {
case 1:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,3,nCCE);
schedule_RA(module_idP,frameP,subframeP,7,nprb,nCCE); // 7 = Msg3 subframeP, not
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,1,mbsfn_status);
break;
case 3:
case 4:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,3,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
case 6:
schedule_ulsch(module_idP,frameP,cooperation_flag,subframeP,4,nCCE);
//schedule_RA(module_idP,frameP,subframeP,nprb,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
case 2:
case 5:
//schedule_RA(module_idP,frameP,subframeP,nprb,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
break;
default:
break;
}
} else { //FDD
// schedule_ulsch(module_idP,frameP,cooperation_flag,9,3,nCCE);
schedule_ue_spec(module_idP,frameP,subframeP,nprb,nCCE,mbsfn_status);
fill_DLSCH_dci(module_idP,frameP,subframeP,RBalloc,0,mbsfn_status);
}
break;
}
for (CC_id=0; CC_idnCCE = nCCE[CC_id];
}
LOG_D(MAC,"frameP %d, subframeP %d nCCE %d\n",frameP,subframeP,nCCE[0]);
stop_meas(&eNB_mac_inst[module_idP].eNB_scheduler);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ULSCH_SCHEDULER,VCD_FUNCTION_OUT);
}