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openairinterface5g/openair2/NR_PHY_INTERFACE/NR_IF_Module.c
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Melissa Elkadi 4dfe7c2596 5G Userplane working 50% of the time 
This commit includes several changes.
First, it updates the way we fill the uplink
UCI indication. This still has some todo comments
since all the fields in this ind were hardcoded.
It also updates the pack and unpack functions for
the NR_UCI incations. Lastly, it includes updates
to the gNB UCI scheduler. The updates in the gNB
were cherry picked from develop. There are two updates
to the VNF which allow the VNF timing/slots to be
adjusted based on the received timing_info packets
from the VNF. This adjustment was disabled in IISc's
nFAPI code. For now, it is improving the timing
between the VNF and PNF.
2021-07-01 12:21:57 -07:00

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/*
* 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 openair2/NR_PHY_INTERFACE/NR_IF_Module.c
* \brief data structures for PHY/MAC interface modules
* \author EURECOM/NTUST
* \date 2018
* \version 0.1
* \company Eurecom, NTUST
* \email: raymond.knopp@eurecom.fr, kroempa@gmail.com
* \note
* \warning
*/
#include "openair1/SCHED_NR/fapi_nr_l1.h"
#include "openair2/NR_PHY_INTERFACE/NR_IF_Module.h"
#include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h"
#include "LAYER2/NR_MAC_gNB/mac_proto.h"
#include "common/ran_context.h"
#include "executables/softmodem-common.h"
#include "nfapi/oai_integration/vendor_ext.h"
#define MAX_IF_MODULES 100
//#define UL_HARQ_PRINT
NR_IF_Module_t *if_inst[MAX_IF_MODULES];
NR_Sched_Rsp_t Sched_INFO[MAX_IF_MODULES][MAX_NUM_CCs];
extern int oai_nfapi_harq_indication(nfapi_harq_indication_t *harq_ind);
extern int oai_nfapi_crc_indication(nfapi_crc_indication_t *crc_ind);
extern int oai_nfapi_cqi_indication(nfapi_cqi_indication_t *cqi_ind);
extern int oai_nfapi_sr_indication(nfapi_sr_indication_t *ind);
extern int oai_nfapi_rx_ind(nfapi_rx_indication_t *ind);
extern uint8_t nfapi_mode;
extern uint16_t sf_ahead;
extern uint16_t sl_ahead;
extern NR_UL_IND_t UL_INFO;
void handle_nr_rach(NR_UL_IND_t *UL_info)
{
// Melissa: TODO come back and differentiate between global UL_info and passed in arg
if (UL_INFO.rach_ind.number_of_pdus>0) {
LOG_I(MAC,"UL_INFO[Frame %d, Slot %d] Calling initiate_ra_proc RACH:SFN/SLOT:%d/%d\n",
UL_INFO.frame,UL_INFO.slot, UL_INFO.rach_ind.sfn,UL_INFO.rach_ind.slot);
int npdus = UL_INFO.rach_ind.number_of_pdus;
for(int i = 0; i < npdus; i++) {
UL_INFO.rach_ind.number_of_pdus--;
if (UL_INFO.rach_ind.pdu_list[i].num_preamble>0)
AssertFatal(UL_INFO.rach_ind.pdu_list[i].num_preamble==1,
"More than 1 preamble not supported\n");
nr_initiate_ra_proc(UL_INFO.module_id,
UL_INFO.CC_id,
UL_INFO.rach_ind.sfn,
UL_INFO.rach_ind.slot,
UL_INFO.rach_ind.pdu_list[i].preamble_list[0].preamble_index,
UL_INFO.rach_ind.pdu_list[i].freq_index,
UL_INFO.rach_ind.pdu_list[i].symbol_index,
UL_INFO.rach_ind.pdu_list[i].preamble_list[0].timing_advance);
}
}
}
void handle_nr_uci(NR_UL_IND_t *UL_info)
{
const module_id_t mod_id = UL_INFO.module_id;
const frame_t frame = UL_INFO.uci_ind.sfn;
const sub_frame_t slot = UL_INFO.uci_ind.slot;
int num_ucis = UL_INFO.uci_ind.num_ucis;
nfapi_nr_uci_t *uci_list = UL_INFO.uci_ind.uci_list;
for (int i = 0; i < num_ucis; i++) {
switch (uci_list[i].pdu_type) {
case NFAPI_NR_UCI_PUSCH_PDU_TYPE:
LOG_E(MAC, "%s(): unhandled NFAPI_NR_UCI_PUSCH_PDU_TYPE\n", __func__);
break;
case NFAPI_NR_UCI_FORMAT_0_1_PDU_TYPE: {
const nfapi_nr_uci_pucch_pdu_format_0_1_t *uci_pdu = &uci_list[i].pucch_pdu_format_0_1;
handle_nr_uci_pucch_0_1(mod_id, frame, slot, uci_pdu);
break;
}
case NFAPI_NR_UCI_FORMAT_2_3_4_PDU_TYPE: {
const nfapi_nr_uci_pucch_pdu_format_2_3_4_t *uci_pdu = &uci_list[i].pucch_pdu_format_2_3_4;
handle_nr_uci_pucch_2_3_4(mod_id, frame, slot, uci_pdu);
break;
}
}
}
UL_INFO.uci_ind.num_ucis = 0;
if(NFAPI_MODE != NFAPI_MODE_PNF)
// mark corresponding PUCCH resources as free
// NOTE: we just assume it is BWP ID 1, to be revised for multiple BWPs
RC.nrmac[mod_id]->pucch_index_used[1][slot] = 0;
}
void handle_nr_ulsch(NR_UL_IND_t *UL_info)
{
// Melissa: TODO come back and differentiate between global UL_info and passed in arg
if (UL_INFO.rx_ind.number_of_pdus > 0 && UL_INFO.crc_ind.number_crcs > 0) {
for (int i = 0; i < UL_INFO.rx_ind.number_of_pdus; i++) {
for (int j = 0; j < UL_INFO.crc_ind.number_crcs; j++) {
// find crc_indication j corresponding rx_indication i
const nfapi_nr_rx_data_pdu_t *rx = &UL_INFO.rx_ind.pdu_list[i];
const nfapi_nr_crc_t *crc = &UL_INFO.crc_ind.crc_list[j];
LOG_D(NR_PHY,
"UL_INFO.crc_ind.pdu_list[%d].rnti:%04x "
"UL_INFO.rx_ind.pdu_list[%d].rnti:%04x\n",
j,
crc->rnti,
i,
rx->rnti);
if (crc->rnti != rx->rnti)
continue;
LOG_D(NR_MAC,
"%4d.%2d Calling rx_sdu (CRC %s/tb_crc_status %d)\n",
UL_INFO.frame,
UL_INFO.slot,
crc->tb_crc_status ? "error" : "ok",
crc->tb_crc_status);
/* if CRC passes, pass PDU, otherwise pass NULL as error indication */
nr_rx_sdu(UL_INFO.module_id,
UL_INFO.CC_id,
UL_INFO.rx_ind.sfn,
UL_INFO.rx_ind.slot,
rx->rnti,
crc->tb_crc_status ? NULL : rx->pdu,
rx->pdu_length,
rx->timing_advance,
rx->ul_cqi,
rx->rssi);
handle_nr_ul_harq(UL_INFO.module_id, UL_INFO.frame, UL_INFO.slot, crc);
break;
} // for (j=0;j<UL_INFO.crc_ind.number_crcs;j++)
} // for (i=0;i<UL_INFO.rx_ind.number_of_pdus;i++)
UL_INFO.crc_ind.number_crcs = 0;
UL_INFO.rx_ind.number_of_pdus = 0;
} else if (UL_INFO.rx_ind.number_of_pdus != 0
|| UL_INFO.crc_ind.number_crcs != 0) {
LOG_E(NR_PHY,
"hoping not to have mis-match between CRC ind and RX ind - "
"hopefully the missing message is coming shortly "
"rx_ind:%d(SFN/SL:%d/%d) crc_ind:%d(SFN/SL:%d/%d) \n",
UL_INFO.rx_ind.number_of_pdus,
UL_INFO.rx_ind.sfn,
UL_INFO.rx_ind.slot,
UL_INFO.crc_ind.number_crcs,
UL_INFO.rx_ind.sfn,
UL_INFO.rx_ind.slot);
}
}
void NR_UL_indication(NR_UL_IND_t *UL_info) {
AssertFatal(UL_info!=NULL,"UL_INFO is null\n");
#ifdef DUMP_FAPI
dump_ul(UL_info);
#endif
module_id_t module_id = UL_info->module_id;
int CC_id = UL_info->CC_id;
NR_Sched_Rsp_t *sched_info = &Sched_INFO[module_id][CC_id];
NR_IF_Module_t *ifi = if_inst[module_id];
gNB_MAC_INST *mac = RC.nrmac[module_id];
LOG_D(PHY,"SFN/SF:%d%d module_id:%d CC_id:%d UL_info[rach_pdus:%d rx_ind:%d crcs:%d]\n",
UL_info->frame,UL_info->slot,
module_id,CC_id, UL_info->rach_ind.number_of_pdus,
UL_info->rx_ind.number_of_pdus, UL_info->crc_ind.number_crcs);
if (NFAPI_MODE != NFAPI_MODE_PNF) {
if (ifi->CC_mask==0) {
ifi->current_frame = UL_info->frame;
ifi->current_slot = UL_info->slot;
} else {
AssertFatal(UL_info->frame != ifi->current_frame,"CC_mask %x is not full and frame has changed\n",ifi->CC_mask);
AssertFatal(UL_info->slot != ifi->current_slot,"CC_mask %x is not full and slot has changed\n",ifi->CC_mask);
}
ifi->CC_mask |= (1<<CC_id);
}
handle_nr_rach(UL_info);
handle_nr_uci(UL_info);
// clear HI prior to handling ULSCH
mac->UL_dci_req[CC_id].numPdus = 0;
handle_nr_ulsch(UL_info);
if (NFAPI_MODE != NFAPI_MODE_PNF) {
if (ifi->CC_mask == ((1<<MAX_NUM_CCs)-1)) {
/*
eNB_dlsch_ulsch_scheduler(module_id,
(UL_info->frame+((UL_info->slot>(9-sl_ahead))?1:0)) % 1024,
(UL_info->slot+sl_ahead)%10);
*/
nfapi_nr_config_request_scf_t *cfg = &mac->config[CC_id];
int spf = get_spf(cfg);
gNB_dlsch_ulsch_scheduler(module_id,
(UL_info->frame+((UL_info->slot>(spf-1-sl_ahead))?1:0)) % 1024,
(UL_info->slot+sl_ahead)%spf);
ifi->CC_mask = 0;
sched_info->module_id = module_id;
sched_info->CC_id = CC_id;
sched_info->frame = (UL_info->frame + ((UL_info->slot>(spf-1-sl_ahead)) ? 1 : 0)) % 1024;
sched_info->slot = (UL_info->slot+sl_ahead)%spf;
sched_info->DL_req = &mac->DL_req[CC_id];
sched_info->UL_dci_req = &mac->UL_dci_req[CC_id];
sched_info->UL_tti_req = mac->UL_tti_req[CC_id];
sched_info->TX_req = &mac->TX_req[CC_id];
#ifdef DUMP_FAPI
dump_dl(sched_info);
#endif
if (ifi->NR_Schedule_response) {
AssertFatal(ifi->NR_Schedule_response!=NULL,
"nr_schedule_response is null (mod %d, cc %d)\n",
module_id,
CC_id);
ifi->NR_Schedule_response(sched_info);
}
LOG_D(PHY,"NR_Schedule_response: SFN_SF:%d%d dl_pdus:%d\n",
sched_info->frame,
sched_info->slot,
sched_info->DL_req->dl_tti_request_body.nPDUs);
}
}
}
NR_IF_Module_t *NR_IF_Module_init(int Mod_id) {
AssertFatal(Mod_id<MAX_MODULES,"Asking for Module %d > %d\n",Mod_id,MAX_IF_MODULES);
LOG_I(PHY,"Installing callbacks for IF_Module - UL_indication\n");
if (if_inst[Mod_id]==NULL) {
if_inst[Mod_id] = (NR_IF_Module_t*)malloc(sizeof(NR_IF_Module_t));
memset((void*)if_inst[Mod_id],0,sizeof(NR_IF_Module_t));
LOG_I(MAC,"Allocating shared L1/L2 interface structure for instance %d @ %p\n",Mod_id,if_inst[Mod_id]);
if_inst[Mod_id]->CC_mask=0;
if_inst[Mod_id]->NR_UL_indication = NR_UL_indication;
AssertFatal(pthread_mutex_init(&if_inst[Mod_id]->if_mutex,NULL)==0,
"allocation of if_inst[%d]->if_mutex fails\n",Mod_id);
}
return if_inst[Mod_id];
}
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