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openairinterface5g/openair2/LAYER2/MAC/eNB_scheduler_primitives.c
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/*******************************************************************************
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 <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file eNB_scheduler_primitives.c
* \brief primitives used by eNB for BCH, RACH, ULSCH, DLSCH scheduling
* \author Navid Nikaein and Raymond Knopp
* \date 2010 - 2014
* \email: navid.nikaein@eurecom.fr
* \version 1.0
* @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 "ARCH/CBMIMO1/DEVICE_DRIVER/extern.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/defs.h"
#include "ARCH/CBMIMO1/DEVICE_DRIVER/from_grlib_softregs.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
void init_ue_sched_info(void){
module_id_t i,j;
for (i=0;i<NUMBER_OF_eNB_MAX;i++){
for (j=0;j<NUMBER_OF_UE_MAX;j++){
// init DL
eNB_dlsch_info[i][j].weight = 0;
eNB_dlsch_info[i][j].subframe = 0;
eNB_dlsch_info[i][j].serving_num = 0;
eNB_dlsch_info[i][j].status = S_DL_NONE;
// init UL
eNB_ulsch_info[i][j].subframe = 0;
eNB_ulsch_info[i][j].serving_num = 0;
eNB_ulsch_info[i][j].status = S_UL_NONE;
}
}
}
unsigned char get_ue_weight(module_id_t module_idP, module_id_t ue_mod_idP){
return(eNB_dlsch_info[module_idP][ue_mod_idP].weight);
}
DCI_PDU *get_dci_sdu(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP) {
return(&eNB_mac_inst[module_idP].DCI_pdu);
}
module_id_t find_UE_id(module_id_t module_idP, rnti_t rnti) {
module_id_t ue_mod_id;
for (ue_mod_id=0;ue_mod_id<NUMBER_OF_UE_MAX;ue_mod_id++) {
// if (mac_get_rrc_status(module_idP,1,ue_mod_id) >= RRC_CONNECTED) {
if (eNB_mac_inst[module_idP].UE_template[ue_mod_id].rnti==rnti) {
return(ue_mod_id);
}
}
return(module_id_t)(-1);
}
rnti_t find_UE_RNTI(module_id_t module_idP, module_id_t ue_mod_idP) {
return (eNB_mac_inst[module_idP].UE_template[ue_mod_idP].rnti);
}
boolean_t is_UE_active(module_id_t module_idP, module_id_t ue_mod_idP ){
if (eNB_mac_inst[module_idP].UE_template[ue_mod_idP].rnti !=0 )
return TRUE;
else
return FALSE ;
}
uint8_t find_active_UEs(module_id_t module_idP){
module_id_t ue_mod_id = 0;
rnti_t rnti = 0;
uint8_t nb_active_ue = 0;
for (ue_mod_id=0;ue_mod_id<NUMBER_OF_UE_MAX;ue_mod_id++) {
if (((rnti=eNB_mac_inst[module_idP].UE_template[ue_mod_id].rnti) !=0)&&(eNB_mac_inst[module_idP].UE_template[ue_mod_id].ul_active==TRUE)){
if (mac_xface->get_eNB_UE_stats(module_idP,rnti) != NULL){ // check at the phy enb_ue state for this rnti
nb_active_ue++;
}
else { // this ue is removed at the phy => remove it at the mac as well
mac_remove_ue(module_idP, ue_mod_id);
}
}
}
return(nb_active_ue);
}
// get aggregatiob form phy for a give UE
unsigned char process_ue_cqi (module_id_t module_idP, module_id_t ue_mod_idP) {
unsigned char aggregation=2;
// check the MCS and SNR and set the aggregation accordingly
return aggregation;
}
#ifdef CBA
uint8_t find_num_active_UEs_in_cbagroup(module_id_t module_idP, unsigned char group_id){
module_id_t UE_id;
rnti_t rnti;
unsigned char nb_ue_in_pusch=0;
LTE_eNB_UE_stats* eNB_UE_stats;
for (UE_id=group_id;UE_id<NUMBER_OF_UE_MAX;UE_id+=eNB_mac_inst[module_idP].num_active_cba_groups) {
if (((rnti=eNB_mac_inst[module_idP].UE_template[UE_id].rnti) !=0) &&
(eNB_mac_inst[module_idP].UE_template[UE_id].ul_active==TRUE) &&
(mac_get_rrc_status(module_idP,1,UE_id) > RRC_CONNECTED)){
// && (UE_is_to_be_scheduled(module_idP,UE_id)))
// check at the phy enb_ue state for this rnti
if ((eNB_UE_stats= mac_xface->get_eNB_UE_stats(module_idP,rnti)) != NULL){
if ((eNB_UE_stats->mode == PUSCH) && (UE_is_to_be_scheduled(module_idP,UE_id) == 0)){
nb_ue_in_pusch++;
}
}
}
}
return(nb_ue_in_pusch);
}
#endif
int8_t add_new_ue(module_id_t enb_mod_idP, rnti_t rntiP) {
module_id_t ue_mod_id;
int j;
for (ue_mod_id=0;ue_mod_id<NUMBER_OF_UE_MAX;ue_mod_id++) {
if (eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].rnti == 0) {
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].rnti = rntiP;
for (j=0;j<8;j++) {
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].oldNDI[j] = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].oldNDI_UL[j] = 0;
}
eNB_ulsch_info[enb_mod_idP][ue_mod_id].status = S_UL_WAITING;
eNB_dlsch_info[enb_mod_idP][ue_mod_id].status = S_UL_WAITING;
LOG_D(MAC,"[eNB] Add UE_id %d : rnti %x\n",ue_mod_id,eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].rnti);
return((int8_t)ue_mod_id);
}
}
return(-1);
}
int8_t mac_remove_ue(module_id_t enb_mod_idP, module_id_t ue_mod_idP) {
LOG_I(MAC,"Removing UE %d (rnti %x)\n",ue_mod_idP,eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].rnti);
// clear all remaining pending transmissions
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].bsr_info[LCGID0] = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].bsr_info[LCGID1] = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].bsr_info[LCGID2] = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].bsr_info[LCGID3] = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].ul_SR = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].rnti = 0;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_idP].ul_active = FALSE;
eNB_ulsch_info[enb_mod_idP][ue_mod_idP].rnti = 0;
eNB_ulsch_info[enb_mod_idP][ue_mod_idP].status = S_UL_NONE;
eNB_dlsch_info[enb_mod_idP][ue_mod_idP].rnti = 0;
eNB_dlsch_info[enb_mod_idP][ue_mod_idP].status = S_DL_NONE;
rrc_eNB_free_UE_index(enb_mod_idP,ue_mod_idP);
return(1);
}
void SR_indication(module_id_t enb_mod_idP, frame_t frameP, rnti_t rntiP, sub_frame_t subframeP) {
module_id_t ue_mod_id = find_UE_id(enb_mod_idP, rntiP);
if (ue_mod_id != UE_INDEX_INVALID ) {
LOG_D(MAC,"[eNB %d][SR %x] Frame %d subframeP %d Signaling SR for UE %d \n",enb_mod_idP,rntiP,frameP,subframeP, ue_mod_id);
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].ul_SR = 1;
eNB_mac_inst[enb_mod_idP].UE_template[ue_mod_id].ul_active = TRUE;
} else {
// AssertFatal(0, "find_UE_id(%u,rnti %d) not found", enb_mod_idP, rntiP);
// AssertError(0, 0, "Frame %d: find_UE_id(%u,rnti %d) not found\n", frameP, enb_mod_idP, rntiP);
LOG_D(MAC,"[eNB %d][SR %x] Frame %d subframeP %d Signaling SR for UE %d (unknown UEid) \n",enb_mod_idP,rntiP,frameP,subframeP, ue_mod_id);
}
}
/*
#ifdef Rel10
unsigned char generate_mch_header( unsigned char *mac_header,
unsigned char num_sdus,
unsigned short *sdu_lengths,
unsigned char *sdu_lcids,
unsigned char msi,
unsigned char short_padding,
unsigned short post_padding) {
SCH_SUBHEADER_FIXED *mac_header_ptr = (SCH_SUBHEADER_FIXED *)mac_header;
uint8_t first_element=0,last_size=0,i;
uint8_t mac_header_control_elements[2*num_sdus],*ce_ptr;
ce_ptr = &mac_header_control_elements[0];
if ((short_padding == 1) || (short_padding == 2)) {
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
first_element=1;
last_size=1;
}
if (short_padding == 2) {
mac_header_ptr->E = 1;
mac_header_ptr++;
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
last_size=1;
}
// SUBHEADER for MSI CE
if (msi != 0) {// there is MSI MAC Control Element
if (first_element>0) {
mac_header_ptr->E = 1;
mac_header_ptr+=last_size;
}
else {
first_element = 1;
}
if (num_sdus*2 < 128) {
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID = MCH_SCHDL_INFO;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L = num_sdus*2;
last_size=2;
}
else {
((SCH_SUBHEADER_LONG *)mac_header_ptr)->R = 0;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->E = 0;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->F = 1;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->LCID = MCH_SCHDL_INFO;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->L = (num_sdus*2)&0x7fff;
last_size=3;
}
// Create the MSI MAC Control Element here
}
// SUBHEADER for MAC SDU (MCCH+MTCHs)
for (i=0;i<num_sdus;i++) {
if (first_element>0) {
mac_header_ptr->E = 1;
mac_header_ptr+=last_size;
}
else {
first_element = 1;
}
if (sdu_lengths[i] < 128) {
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->R = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->E = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->F = 0;
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->LCID = sdu_lcids[i];
((SCH_SUBHEADER_SHORT *)mac_header_ptr)->L = (unsigned char)sdu_lengths[i];
last_size=2;
}
else {
((SCH_SUBHEADER_LONG *)mac_header_ptr)->R = 0;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->E = 0;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->F = 1;
((SCH_SUBHEADER_LONG *)mac_header_ptr)->LCID = sdu_lcids[i];
((SCH_SUBHEADER_LONG *)mac_header_ptr)->L = (unsigned short) sdu_lengths[i]&0x7fff;
last_size=3;
}
}
if (post_padding>0) {// we have lots of padding at the end of the packet
mac_header_ptr->E = 1;
mac_header_ptr+=last_size;
// add a padding element
mac_header_ptr->R = 0;
mac_header_ptr->E = 0;
mac_header_ptr->LCID = SHORT_PADDING;
mac_header_ptr++;
}
else { // no end of packet padding
// last SDU subhead is of fixed type (sdu length implicitly to be computed at UE)
mac_header_ptr++;
}
// Copy MSI Control Element to the end of the MAC Header if it presents
if ((ce_ptr-mac_header_control_elements) > 0) {
// printf("Copying %d bytes for control elements\n",ce_ptr-mac_header_control_elements);
memcpy((void*)mac_header_ptr,mac_header_control_elements,ce_ptr-mac_header_control_elements);
mac_header_ptr+=(unsigned char)(ce_ptr-mac_header_control_elements);
}
return((unsigned char*)mac_header_ptr - mac_header);
}
#endif
*/
void add_common_dci(DCI_PDU *DCI_pdu,
void *pdu,
rnti_t rnti,
unsigned char dci_size_bytes,
unsigned char aggregation,
unsigned char dci_size_bits,
unsigned char dci_fmt,
uint8_t ra_flag) {
memcpy(&DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].dci_pdu[0],pdu,dci_size_bytes);
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].dci_length = dci_size_bits;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].L = aggregation;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].rnti = rnti;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].format = dci_fmt;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci].ra_flag = ra_flag;
DCI_pdu->Num_common_dci++;
LOG_D(MAC,"add common dci format %d for rnti %d \n",dci_fmt,rnti);
}
void add_ue_spec_dci(DCI_PDU *DCI_pdu,void *pdu,rnti_t rnti,unsigned char dci_size_bytes,unsigned char aggregation,unsigned char dci_size_bits,unsigned char dci_fmt,uint8_t ra_flag) {
memcpy(&DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].dci_pdu[0],pdu,dci_size_bytes);
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].dci_length = dci_size_bits;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].L = aggregation;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].rnti = rnti;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].format = dci_fmt;
DCI_pdu->dci_alloc[DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci].ra_flag = ra_flag;
DCI_pdu->Num_ue_spec_dci++;
}
// This has to be updated to include BSR information
uint8_t UE_is_to_be_scheduled(module_id_t module_idP,uint8_t UE_id) {
// LOG_D(MAC,"[eNB %d][PUSCH] Frame %d subframeP %d Scheduling UE %d\n",module_idP,rnti,frameP,subframeP,
// UE_id);
if ((eNB_mac_inst[module_idP].UE_template[UE_id].bsr_info[LCGID0]>0) ||
(eNB_mac_inst[module_idP].UE_template[UE_id].bsr_info[LCGID1]>0) ||
(eNB_mac_inst[module_idP].UE_template[UE_id].bsr_info[LCGID2]>0) ||
(eNB_mac_inst[module_idP].UE_template[UE_id].bsr_info[LCGID3]>0) ||
(eNB_mac_inst[module_idP].UE_template[UE_id].ul_SR>0)) // uplink scheduling request
return(1);
else
return(0);
}
uint32_t allocate_prbs(module_id_t ue_mod_idP,unsigned char nb_rb, uint32_t *rballoc) {
int i;
uint32_t rballoc_dci=0;
unsigned char nb_rb_alloc=0;
for (i=0;i<(mac_xface->lte_frame_parms->N_RB_DL-2);i+=2) {
if (((*rballoc>>i)&3)==0) {
*rballoc |= (3<<i);
rballoc_dci |= (1<<((12-i)>>1));
nb_rb_alloc+=2;
}
if (nb_rb_alloc==nb_rb)
return(rballoc_dci);
}
if ((mac_xface->lte_frame_parms->N_RB_DL&1)==1) {
if ((*rballoc>>(mac_xface->lte_frame_parms->N_RB_DL-1)&1)==0) {
*rballoc |= (1<<(mac_xface->lte_frame_parms->N_RB_DL-1));
rballoc_dci |= 1;//(1<<(mac_xface->lte_frame_parms->N_RB_DL>>1));
}
}
return(rballoc_dci);
}
uint32_t allocate_prbs_sub(int nb_rb, uint8_t *rballoc) {
int check=0;//check1=0,check2=0;
uint32_t rballoc_dci=0;
//uint8_t number_of_subbands=13;
LOG_T(MAC,"*****Check1RBALLOC****: %d%d%d%d (nb_rb %d,N_RBGS %d)\n",
rballoc[3],rballoc[2],rballoc[1],rballoc[0],nb_rb,mac_xface->lte_frame_parms->N_RBGS);
while((nb_rb >0) && (check < mac_xface->lte_frame_parms->N_RBGS)){
//printf("rballoc[%d] %d\n",check,rballoc[check]);
if(rballoc[check] == 1){
rballoc_dci |= (1<<((mac_xface->lte_frame_parms->N_RBGS-1)-check));
switch (mac_xface->lte_frame_parms->N_RB_DL) {
case 6:
nb_rb--;
case 25:
if ((check == mac_xface->lte_frame_parms->N_RBGS-1))
nb_rb--;
else
nb_rb-=2;
break;
case 50:
if ((check == mac_xface->lte_frame_parms->N_RBGS-1))
nb_rb-=2;
else
nb_rb-=3;
break;
case 100:
nb_rb-=4;
break;
}
}
//printf("rb_alloc %x\n",rballoc_dci);
check = check+1;
// check1 = check1+2;
}
// rballoc_dci = (rballoc_dci)&(0x1fff);
LOG_T(MAC,"*********RBALLOC : %x\n",rballoc_dci);
// exit(-1);
return (rballoc_dci);
}
void update_ul_dci(module_id_t module_idP,rnti_t rnti,uint8_t dai) {
DCI_PDU *DCI_pdu = &eNB_mac_inst[module_idP].DCI_pdu;
int i;
DCI0_5MHz_TDD_1_6_t *ULSCH_dci = NULL;;
if (mac_xface->lte_frame_parms->frame_type == TDD) {
for (i=0;i<DCI_pdu->Num_common_dci+DCI_pdu->Num_ue_spec_dci;i++) {
ULSCH_dci = (DCI0_5MHz_TDD_1_6_t *)DCI_pdu->dci_alloc[i].dci_pdu;
if ((DCI_pdu->dci_alloc[i].format == format0) && (DCI_pdu->dci_alloc[i].rnti == rnti))
ULSCH_dci->dai = (dai-1)&3;
}
}
// printf("Update UL DCI: DAI %d\n",dai);
}
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