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7dbdcc2d342231a03a85273ed0d08390aeae1a7c
openairinterface5g/openair2/PHY_INTERFACE/phy_stub_UE.c
T
David Kim 7dbdcc2d34 changing env for test 
1. restoring ci test environment.
2. packet drop disabled.
2021-03-23 13:45:24 -07:00

2124 lines
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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
*/
#include "openair2/LAYER2/MAC/mac_extern.h"
#include "openair2/LAYER2/MAC/mac.h"
#include "openair2/LAYER2/MAC/mac_proto.h"
#include "openair1/SCHED_UE/sched_UE.h"
#include "nfapi/open-nFAPI/nfapi/public_inc/nfapi_interface.h"
#include "openair2/PHY_INTERFACE/phy_stub_UE.h"
#include "openair2/ENB_APP/L1_paramdef.h"
#include "openair2/ENB_APP/enb_paramdef.h"
#include "targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"
#include "common/config/config_load_configmodule.h"
#include "common/config/config_userapi.h"
#include <arpa/inet.h>
#include <string.h>
#include <errno.h>
#include "openair2/NR_PHY_INTERFACE/NR_IF_Module.h"
#include "openair1/PHY/defs_gNB.h"
#include "nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h"
#include "openair1/PHY/LTE_TRANSPORT/transport_common.h"
extern int oai_nfapi_rach_ind(nfapi_rach_indication_t *rach_ind);
void configure_nfapi_pnf(char *vnf_ip_addr,
int vnf_p5_port,
char *pnf_ip_addr,
int pnf_p7_port,
int vnf_p7_port);
UL_IND_t *UL_INFO = NULL;
queue_t dl_config_req_tx_req_queue;
queue_t ul_config_req_queue;
queue_t hi_dci0_req_queue;
FILL_UL_INFO_MUTEX_t fill_ul_mutex;
int current_sfn_sf;
sem_t sfn_semaphore;
static sf_rnti_mcs_s sf_rnti_mcs[NUM_NFAPI_SUBFRAME];
static int ue_tx_sock_descriptor = -1;
static int ue_rx_sock_descriptor = -1;
static int get_mcs_from_sinr(float sinr);
static int get_cqi_from_mcs(void);
static void read_channel_param(const nfapi_dl_config_request_pdu_t * pdu, int sf, int index);
static bool did_drop_transport_block(int sf, uint16_t rnti);
static float get_bler_val(uint8_t mcs, int sinr);
static bool should_drop_transport_block(int sf, uint16_t rnti);
static void save_dci_pdu_for_crnti(nfapi_dl_config_request_t *dl_config_req);
extern nfapi_tx_request_pdu_t* tx_request_pdu[1023][NUM_NFAPI_SUBFRAME][10]; //TODO: NFAPI_TX_MAX_PDU for last dim? Check nfapi_pnf.c ln. 81
//extern int timer_subframe;
//extern int timer_frame;
extern uint16_t sf_ahead;
void Msg1_transmitted(module_id_t module_idP,uint8_t CC_id,frame_t frameP, uint8_t eNB_id);
void Msg3_transmitted(module_id_t module_idP,uint8_t CC_id,frame_t frameP, uint8_t eNB_id);
void fill_rx_indication_UE_MAC(module_id_t Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
uint8_t *ulsch_buffer,
uint16_t buflen,
uint16_t rnti,
int index,
nfapi_ul_config_request_t *ul_config_req) {
nfapi_rx_indication_pdu_t *pdu;
int timing_advance_update;
pthread_mutex_lock(&fill_ul_mutex.rx_mutex);
UL_INFO->rx_ind.header.message_id = NFAPI_RX_ULSCH_INDICATION;
UL_INFO->rx_ind.sfn_sf = frame << 4 | subframe;
UL_INFO->rx_ind.rx_indication_body.tl.tag = NFAPI_RX_INDICATION_BODY_TAG;
UL_INFO->rx_ind.vendor_extension = ul_config_req->vendor_extension;
assert(UL_INFO->rx_ind.rx_indication_body.number_of_pdus <= NFAPI_RX_IND_MAX_PDU);
pdu = &UL_INFO->rx_ind.rx_indication_body
.rx_pdu_list[UL_INFO->rx_ind.rx_indication_body.number_of_pdus];
// pdu = &UL_INFO->rx_ind.rx_indication_body.rx_pdu_list[index];
// pdu->rx_ue_information.handle = eNB->ulsch[UE_id]->handle;
pdu->rx_ue_information.tl.tag = NFAPI_RX_UE_INFORMATION_TAG;
pdu->rx_ue_information.rnti = rnti;
pdu->rx_indication_rel8.tl.tag = NFAPI_RX_INDICATION_REL8_TAG;
pdu->rx_indication_rel8.length = buflen;
pdu->rx_indication_rel8.offset = 1;
pdu->rx_indication_rel9.tl.tag = NFAPI_RX_INDICATION_REL9_TAG;
pdu->rx_indication_rel9.timing_advance_r9 = 0;
// ulsch_buffer is necessary to keep its value.
pdu->data = malloc(buflen);
memcpy(pdu->data, ulsch_buffer, buflen);
LOG_I(MAC, "buflen of rx_ind pdu_data = %u SFN.SF: %d.%d\n", buflen,
frame, subframe);
// estimate timing advance for MAC
timing_advance_update = 0; // Don't know what to put here
pdu->rx_indication_rel8.timing_advance = timing_advance_update;
int SNRtimes10 = 640;
if (SNRtimes10 < -640)
pdu->rx_indication_rel8.ul_cqi = 0;
else if (SNRtimes10 > 635)
pdu->rx_indication_rel8.ul_cqi = 255;
else
pdu->rx_indication_rel8.ul_cqi = (640 + SNRtimes10) / 5;
UL_INFO->rx_ind.rx_indication_body.number_of_pdus++;
UL_INFO->rx_ind.sfn_sf = frame << 4 | subframe;
pthread_mutex_unlock(&fill_ul_mutex.rx_mutex);
}
void fill_sr_indication_UE_MAC(int Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
uint16_t rnti,
nfapi_ul_config_request_t *ul_config_req) {
pthread_mutex_lock(&fill_ul_mutex.sr_mutex);
nfapi_sr_indication_t *sr_ind = &UL_INFO->sr_ind;
nfapi_sr_indication_body_t *sr_ind_body = &sr_ind->sr_indication_body;
assert(sr_ind_body->number_of_srs <= NFAPI_SR_IND_MAX_PDU);
nfapi_sr_indication_pdu_t *pdu = &sr_ind_body->sr_pdu_list[sr_ind_body->number_of_srs];
UL_INFO->sr_ind.vendor_extension = ul_config_req->vendor_extension;
sr_ind->sfn_sf = frame << 4 | subframe;
sr_ind->header.message_id = NFAPI_RX_SR_INDICATION;
sr_ind_body->tl.tag = NFAPI_SR_INDICATION_BODY_TAG;
pdu->instance_length = 0; // don't know what to do with this
// pdu->rx_ue_information.handle = handle;
pdu->rx_ue_information.tl.tag = NFAPI_RX_UE_INFORMATION_TAG;
pdu->rx_ue_information.rnti = rnti; // UE_mac_inst[Mod_id].crnti
pdu->ul_cqi_information.tl.tag = NFAPI_UL_CQI_INFORMATION_TAG;
pdu->ul_cqi_information.channel = 0;
int SNRtimes10 = 640;
if (SNRtimes10 < -640)
pdu->ul_cqi_information.ul_cqi = 0;
else if (SNRtimes10 > 635)
pdu->ul_cqi_information.ul_cqi = 255;
else
pdu->ul_cqi_information.ul_cqi = (640 + SNRtimes10) / 5;
// UL_INFO->rx_ind.rx_indication_body.number_of_pdus++;
sr_ind_body->number_of_srs++;
pthread_mutex_unlock(&fill_ul_mutex.sr_mutex);
}
void fill_crc_indication_UE_MAC(int Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
uint8_t crc_flag,
int index,
uint16_t rnti,
nfapi_ul_config_request_t *ul_config_req) {
pthread_mutex_lock(&fill_ul_mutex.crc_mutex);
LOG_D(MAC, "fill crc_indication num_crcs: %u\n",
UL_INFO->crc_ind.crc_indication_body.number_of_crcs);
assert(UL_INFO->crc_ind.crc_indication_body.number_of_crcs < NUMBER_OF_UE_MAX);
nfapi_crc_indication_pdu_t *pdu =
&UL_INFO->crc_ind.crc_indication_body
.crc_pdu_list[UL_INFO->crc_ind.crc_indication_body.number_of_crcs];
UL_INFO->crc_ind.sfn_sf = frame << 4 | subframe;
UL_INFO->crc_ind.vendor_extension = ul_config_req->vendor_extension;
UL_INFO->crc_ind.header.message_id = NFAPI_CRC_INDICATION;
UL_INFO->crc_ind.crc_indication_body.tl.tag = NFAPI_CRC_INDICATION_BODY_TAG;
pdu->instance_length = 0;
pdu->rx_ue_information.tl.tag = NFAPI_RX_UE_INFORMATION_TAG;
pdu->rx_ue_information.rnti = rnti;
pdu->crc_indication_rel8.tl.tag = NFAPI_CRC_INDICATION_REL8_TAG;
pdu->crc_indication_rel8.crc_flag = crc_flag;
UL_INFO->crc_ind.crc_indication_body.number_of_crcs++;
LOG_D(PHY,
"%s() rnti:%04x pdus:%d\n",
__FUNCTION__,
pdu->rx_ue_information.rnti,
UL_INFO->crc_ind.crc_indication_body.number_of_crcs);
pthread_mutex_unlock(&fill_ul_mutex.crc_mutex);
}
void fill_rach_indication_UE_MAC(int Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
uint8_t ra_PreambleIndex,
uint16_t ra_RNTI) {
pthread_mutex_lock(&fill_ul_mutex.rach_mutex);
UL_INFO->rach_ind.rach_indication_body.number_of_preambles = 1;
UL_INFO->rach_ind.header.message_id = NFAPI_RACH_INDICATION;
UL_INFO->rach_ind.sfn_sf = frame << 4 | subframe;
UL_INFO->rach_ind.vendor_extension = NULL;
UL_INFO->rach_ind.rach_indication_body.tl.tag = NFAPI_RACH_INDICATION_BODY_TAG;
const int np = UL_INFO->rach_ind.rach_indication_body.number_of_preambles;
UL_INFO->rach_ind.rach_indication_body.preamble_list =
calloc(np, sizeof(nfapi_preamble_pdu_t));
UL_INFO->rach_ind.rach_indication_body.preamble_list[0].preamble_rel8.tl.tag =
NFAPI_PREAMBLE_REL8_TAG;
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel8.timing_advance = 0; // Not sure about that
// The two following should get extracted from the call to
// get_prach_resources().
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel8.preamble = ra_PreambleIndex;
UL_INFO->rach_ind.rach_indication_body.preamble_list[0].preamble_rel8.rnti =
ra_RNTI;
// UL_INFO->rach_ind.rach_indication_body.number_of_preambles++;
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel13.rach_resource_type = 0;
UL_INFO->rach_ind.rach_indication_body.preamble_list[0].instance_length = 0;
LOG_I(PHY,
"UE Filling NFAPI indication for RACH : TA %d, Preamble %d, rnti %x, "
"rach_resource_type %d\n",
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel8.timing_advance,
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel8.preamble,
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel8.rnti,
UL_INFO->rach_ind.rach_indication_body.preamble_list[0]
.preamble_rel13.rach_resource_type);
// This function is currently defined only in the nfapi-RU-RAU-split so we
// should call it when we merge with that branch.
if (NFAPI_MODE == NFAPI_MODE_STANDALONE_PNF) {
send_standalone_msg(UL_INFO, UL_INFO->rach_ind.header.message_id);
} else {
oai_nfapi_rach_ind(&UL_INFO->rach_ind);
}
free(UL_INFO->rach_ind.rach_indication_body.preamble_list);
pthread_mutex_unlock(&fill_ul_mutex.rach_mutex);
}
void fill_ulsch_cqi_indication_UE_MAC(int Mod_id,
uint16_t frame,
uint8_t subframe,
UL_IND_t *UL_INFO,
uint16_t rnti) {
pthread_mutex_lock(&fill_ul_mutex.cqi_mutex);
LOG_D(MAC, "num_cqis: %u in fill_ulsch_cqi_indication_UE_MAC\n",
UL_INFO->cqi_ind.cqi_indication_body.number_of_cqis);
assert(UL_INFO->cqi_ind.cqi_indication_body.number_of_cqis <= NFAPI_CQI_IND_MAX_PDU);
nfapi_cqi_indication_pdu_t *pdu =
&UL_INFO->cqi_ind.cqi_indication_body
.cqi_pdu_list[UL_INFO->cqi_ind.cqi_indication_body.number_of_cqis];
nfapi_cqi_indication_raw_pdu_t *raw_pdu =
&UL_INFO->cqi_ind.cqi_indication_body.cqi_raw_pdu_list
[UL_INFO->cqi_ind.cqi_indication_body.number_of_cqis];
UL_INFO->cqi_ind.sfn_sf = frame << 4 | subframe;
// because of nfapi_vnf.c:733, set message id to 0, not
// NFAPI_RX_CQI_INDICATION;
UL_INFO->cqi_ind.header.message_id = NFAPI_RX_CQI_INDICATION;
UL_INFO->cqi_ind.cqi_indication_body.tl.tag = NFAPI_CQI_INDICATION_BODY_TAG;
pdu->rx_ue_information.tl.tag = NFAPI_RX_UE_INFORMATION_TAG;
pdu->rx_ue_information.rnti = rnti;
// Since we assume that CRC flag is always 0 (ACK) I guess that data_offset
// should always be 0.
pdu->cqi_indication_rel8.data_offset = 0;
pdu->cqi_indication_rel8.tl.tag = NFAPI_CQI_INDICATION_REL8_TAG;
pdu->cqi_indication_rel8.length = 1;
pdu->cqi_indication_rel8.ri = 0;
pdu->cqi_indication_rel8.timing_advance = 0;
// pdu->cqi_indication_rel8.number_of_cc_reported = 1;
pdu->ul_cqi_information.tl.tag = NFAPI_UL_CQI_INFORMATION_TAG;
pdu->ul_cqi_information.channel = 1;
// eNB_scheduler_primitives.c:4839: the upper four bits seem to be the CQI
const int cqi = get_cqi_from_mcs();
raw_pdu->pdu[0] = cqi << 4;
UL_INFO->cqi_ind.cqi_indication_body.number_of_cqis++;
pthread_mutex_unlock(&fill_ul_mutex.cqi_mutex);
}
void fill_ulsch_harq_indication_UE_MAC(
int Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
nfapi_ul_config_ulsch_harq_information *harq_information,
uint16_t rnti,
nfapi_ul_config_request_t *ul_config_req) {
pthread_mutex_lock(&fill_ul_mutex.harq_mutex);
assert(UL_INFO->harq_ind.harq_indication_body.number_of_harqs <= NFAPI_HARQ_IND_MAX_PDU);
nfapi_harq_indication_pdu_t *pdu =
&UL_INFO->harq_ind.harq_indication_body.harq_pdu_list
[UL_INFO->harq_ind.harq_indication_body.number_of_harqs];
UL_INFO->harq_ind.header.message_id = NFAPI_HARQ_INDICATION;
UL_INFO->harq_ind.sfn_sf = frame << 4 | subframe;
UL_INFO->harq_ind.vendor_extension = ul_config_req->vendor_extension;
UL_INFO->harq_ind.harq_indication_body.tl.tag =
NFAPI_HARQ_INDICATION_BODY_TAG;
pdu->instance_length = 0; // don't know what to do with this
// pdu->rx_ue_information.handle = handle;
pdu->rx_ue_information.tl.tag = NFAPI_RX_UE_INFORMATION_TAG;
pdu->rx_ue_information.rnti = rnti;
// For now we consider only FDD
// if (eNB->frame_parms.frame_type == FDD) {
pdu->harq_indication_fdd_rel13.tl.tag = NFAPI_HARQ_INDICATION_FDD_REL13_TAG;
pdu->harq_indication_fdd_rel13.mode = 0;
pdu->harq_indication_fdd_rel13.number_of_ack_nack =
harq_information->harq_information_rel10.harq_size;
// Could this be wrong? Is the number_of_ack_nack field equivalent to O_ACK?
// pdu->harq_indication_fdd_rel13.number_of_ack_nack = ulsch_harq->O_ACK;
for (int i = 0; i < harq_information->harq_information_rel10.harq_size; i++) {
pdu->harq_indication_fdd_rel13.harq_tb_n[i] = 1; // Assume always ACK (No NACK or DTX)
}
UL_INFO->harq_ind.harq_indication_body.number_of_harqs++;
pthread_mutex_unlock(&fill_ul_mutex.harq_mutex);
}
void fill_uci_harq_indication_UE_MAC(int Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
nfapi_ul_config_harq_information *harq_information,
uint16_t rnti,
nfapi_ul_config_request_t *ul_config_req) {
pthread_mutex_lock(&fill_ul_mutex.harq_mutex);
nfapi_harq_indication_t *ind = &UL_INFO->harq_ind;
nfapi_harq_indication_body_t *body = &ind->harq_indication_body;
assert(UL_INFO->harq_ind.harq_indication_body.number_of_harqs <= NFAPI_HARQ_IND_MAX_PDU);
nfapi_harq_indication_pdu_t *pdu =
&body->harq_pdu_list[UL_INFO->harq_ind.harq_indication_body
.number_of_harqs];
UL_INFO->harq_ind.vendor_extension = ul_config_req->vendor_extension;
ind->sfn_sf = frame << 4 | subframe;
ind->header.message_id = NFAPI_HARQ_INDICATION;
body->tl.tag = NFAPI_HARQ_INDICATION_BODY_TAG;
pdu->rx_ue_information.tl.tag = NFAPI_RX_UE_INFORMATION_TAG;
pdu->instance_length = 0; // don't know what to do with this
pdu->rx_ue_information.rnti = rnti;
pdu->ul_cqi_information.tl.tag = NFAPI_UL_CQI_INFORMATION_TAG;
int SNRtimes10 = 640; // TODO: Replace with EpiSci SNR * 10
if (SNRtimes10 < -640)
pdu->ul_cqi_information.ul_cqi = 0;
else if (SNRtimes10 > 635)
pdu->ul_cqi_information.ul_cqi = 255;
else
pdu->ul_cqi_information.ul_cqi = (640 + SNRtimes10) / 5;
pdu->ul_cqi_information.channel = 0;
if (harq_information->harq_information_rel9_fdd.tl.tag
== NFAPI_UL_CONFIG_REQUEST_HARQ_INFORMATION_REL9_FDD_TAG) {
if ((harq_information->harq_information_rel9_fdd.ack_nack_mode == 0)
&& (harq_information->harq_information_rel9_fdd.harq_size == 1)) {
pdu->harq_indication_fdd_rel13.tl.tag =
NFAPI_HARQ_INDICATION_FDD_REL13_TAG;
pdu->harq_indication_fdd_rel13.mode = 0;
pdu->harq_indication_fdd_rel13.number_of_ack_nack = 1;
// AssertFatal(harq_ack[0] == 1 || harq_ack[0] == 2 || harq_ack[0] == 4,
// "harq_ack[0] is %d, should be 1,2 or 4\n",harq_ack[0]);
pdu->harq_indication_fdd_rel13.harq_tb_n[0] =
1; // Assuming always an ACK (No NACK or DTX)
// TODO: Fix ack/dtx -- needed for 5G
// 1.) if received dl_config_req (with c-rnti) store this info and corresponding subframe.
// 2.) if receiving ul_config_req for uci ack/nack or ulsch ack/nak in subframe n
// go look to see if dl_config_req (with c-rnti) was received in subframe (n - 4)
// 3.) if the answer to #2 is yes then send ACK IF NOT send DTX
if (did_drop_transport_block(((subframe+6) % 10), rnti)) // TODO: Handle DTX. Also discuss handling PDCCH
{
pdu->harq_indication_fdd_rel13.harq_tb_n[0] = 2;
LOG_I(PHY, "Setting HARQ No ACK - Channel Model\n");
}
} else if ((harq_information->harq_information_rel9_fdd.ack_nack_mode == 0)
&& (harq_information->harq_information_rel9_fdd.harq_size
== 2)) {
pdu->harq_indication_fdd_rel13.tl.tag =
NFAPI_HARQ_INDICATION_FDD_REL13_TAG;
pdu->harq_indication_fdd_rel13.mode = 0;
pdu->harq_indication_fdd_rel13.number_of_ack_nack = 2;
pdu->harq_indication_fdd_rel13.harq_tb_n[0] =
1; // Assuming always an ACK (No NACK or DTX)
pdu->harq_indication_fdd_rel13.harq_tb_n[1] =
1; // Assuming always an ACK (No NACK or DTX)
}
} else if (harq_information->harq_information_rel10_tdd.tl.tag
== NFAPI_UL_CONFIG_REQUEST_HARQ_INFORMATION_REL10_TDD_TAG) {
if ((harq_information->harq_information_rel10_tdd.ack_nack_mode == 0)
&& (harq_information->harq_information_rel10_tdd.harq_size == 1)) {
pdu->harq_indication_tdd_rel13.tl.tag =
NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
pdu->harq_indication_tdd_rel13.mode = 0;
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;
pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 1;
} else if ((harq_information->harq_information_rel10_tdd.ack_nack_mode == 1)
&& (harq_information->harq_information_rel10_tdd.harq_size
== 2)) {
pdu->harq_indication_tdd_rel13.tl.tag =
NFAPI_HARQ_INDICATION_TDD_REL13_TAG;
pdu->harq_indication_tdd_rel13.mode = 0;
pdu->harq_indication_tdd_rel13.number_of_ack_nack = 1;
pdu->harq_indication_tdd_rel13.harq_data[0].bundling.value_0 = 1;
pdu->harq_indication_tdd_rel13.harq_data[1].bundling.value_0 = 1;
}
} else
AssertFatal(1 == 0, "only format 1a/b for now, received \n");
UL_INFO->harq_ind.harq_indication_body.number_of_harqs++;
LOG_D(PHY,
"Incremented eNB->UL_INFO.harq_ind.number_of_harqs:%d\n",
UL_INFO->harq_ind.harq_indication_body.number_of_harqs);
pthread_mutex_unlock(&fill_ul_mutex.harq_mutex);
}
void handle_nfapi_ul_pdu_UE_MAC(module_id_t Mod_id,
nfapi_ul_config_request_pdu_t *ul_config_pdu,
uint16_t frame,
uint8_t subframe,
uint8_t srs_present,
int index,
nfapi_ul_config_request_t *ul_config_req) {
if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_ULSCH_PDU_TYPE) {
LOG_D(PHY,
"Applying UL config for UE, rnti %x for frame %d, subframe %d\n",
(ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8).rnti,
frame,
subframe);
uint8_t ulsch_buffer[5477] __attribute__((aligned(32)));
uint16_t buflen = ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.size;
uint16_t rnti = ul_config_pdu->ulsch_pdu.ulsch_pdu_rel8.rnti;
uint8_t access_mode = SCHEDULED_ACCESS;
if (buflen > 0) {
if (UE_mac_inst[Mod_id].first_ULSCH_Tx == 1) { // Msg3 case
LOG_D(MAC,
"handle_nfapi_ul_pdu_UE_MAC 2.2, Mod_id:%d, SFN/SF: %d/%d \n",
Mod_id,
frame,
subframe);
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti,
ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
UE_mac_inst[Mod_id].RA_prach_resources.Msg3,
buflen,
rnti,
index,
ul_config_req);
Msg3_transmitted(Mod_id, 0, frame, 0);
// Modification
UE_mac_inst[Mod_id].UE_mode[0] = PUSCH;
UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
// This should be done after the reception of the respective hi_dci0
// UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
} else {
ue_get_sdu(Mod_id, 0, frame, subframe, 0, ulsch_buffer, buflen, &access_mode);
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
ulsch_buffer,
buflen,
rnti,
index,
ul_config_req);
}
}
}
else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_ULSCH_HARQ_PDU_TYPE) {
// AssertFatal((UE_id =
// find_ulsch(ul_config_pdu->ulsch_harq_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti,eNB,SEARCH_EXIST_OR_FREE))>=0,
// "No available UE ULSCH for rnti
// %x\n",ul_config_pdu->ulsch_harq_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti);
uint8_t ulsch_buffer[5477] __attribute__((aligned(32)));
uint16_t buflen =
ul_config_pdu->ulsch_harq_pdu.ulsch_pdu.ulsch_pdu_rel8.size;
nfapi_ul_config_ulsch_harq_information *ulsch_harq_information =
&ul_config_pdu->ulsch_harq_pdu.harq_information;
uint16_t rnti = ul_config_pdu->ulsch_harq_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti;
uint8_t access_mode = SCHEDULED_ACCESS;
if (buflen > 0) {
if (UE_mac_inst[Mod_id].first_ULSCH_Tx == 1) {
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
UE_mac_inst[Mod_id].RA_prach_resources.Msg3,
buflen,
rnti,
index,
ul_config_req);
Msg3_transmitted(Mod_id, 0, frame, 0);
// UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
// Modification
UE_mac_inst[Mod_id].UE_mode[0] = PUSCH;
UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
} else {
ue_get_sdu(Mod_id, 0, frame, subframe, 0, ulsch_buffer, buflen, &access_mode);
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
ulsch_buffer,
buflen,
rnti,
index,
ul_config_req);
}
}
if (ulsch_harq_information != NULL)
fill_ulsch_harq_indication_UE_MAC(
Mod_id, frame, subframe, UL_INFO, ulsch_harq_information, rnti, ul_config_req);
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE) {
uint8_t ulsch_buffer[5477] __attribute__((aligned(32)));
uint16_t buflen = ul_config_pdu->ulsch_cqi_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.size;
uint16_t rnti = ul_config_pdu->ulsch_cqi_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti;
uint8_t access_mode = SCHEDULED_ACCESS;
if (buflen > 0) {
if (UE_mac_inst[Mod_id].first_ULSCH_Tx == 1) { // Msg3 case
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
UE_mac_inst[Mod_id].RA_prach_resources.Msg3,
buflen,
rnti,
index,
ul_config_req);
Msg3_transmitted(Mod_id, 0, frame, 0);
// UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
// Modification
UE_mac_inst[Mod_id].UE_mode[0] = PUSCH;
UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
} else {
ue_get_sdu(Mod_id, 0, frame, subframe, 0, ulsch_buffer, buflen, &access_mode);
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
ulsch_buffer,
buflen,
rnti,
index,
ul_config_req);
fill_ulsch_cqi_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, rnti);
}
}
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE) {
uint8_t ulsch_buffer[5477] __attribute__((aligned(32)));
uint16_t buflen = ul_config_pdu->ulsch_cqi_harq_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.size;
nfapi_ul_config_ulsch_harq_information *ulsch_harq_information =
&ul_config_pdu->ulsch_cqi_harq_ri_pdu.harq_information;
uint16_t rnti = ul_config_pdu->ulsch_cqi_harq_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti;
uint8_t access_mode = SCHEDULED_ACCESS;
if (buflen > 0) {
if (UE_mac_inst[Mod_id].first_ULSCH_Tx == 1) { // Msg3 case
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
UE_mac_inst[Mod_id].RA_prach_resources.Msg3,
buflen,
rnti,
index,
ul_config_req);
Msg3_transmitted(Mod_id, 0, frame, 0);
// UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
// Modification
UE_mac_inst[Mod_id].UE_mode[0] = PUSCH;
UE_mac_inst[Mod_id].first_ULSCH_Tx = 0;
} else {
ue_get_sdu(Mod_id, 0, frame, subframe, 0, ulsch_buffer, buflen, &access_mode);
fill_crc_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, 0, index, rnti, ul_config_req);
fill_rx_indication_UE_MAC(Mod_id,
frame,
subframe,
UL_INFO,
ulsch_buffer,
buflen,
rnti,
index,
ul_config_req);
fill_ulsch_cqi_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, rnti);
}
}
if (ulsch_harq_information != NULL)
fill_ulsch_harq_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, ulsch_harq_information, rnti, ul_config_req);
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE) {
uint16_t rnti = ul_config_pdu->uci_harq_pdu.ue_information.ue_information_rel8.rnti;
nfapi_ul_config_harq_information *ulsch_harq_information = &ul_config_pdu->uci_harq_pdu.harq_information;
if (ulsch_harq_information != NULL)
fill_uci_harq_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, ulsch_harq_information, rnti, ul_config_req);
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_UCI_CQI_PDU_TYPE) {
AssertFatal(1 == 0, "NFAPI_UL_CONFIG_UCI_CQI_PDU_TYPE not handled yet\n");
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_UCI_CQI_HARQ_PDU_TYPE) {
AssertFatal(1 == 0,
"NFAPI_UL_CONFIG_UCI_CQI_HARQ_PDU_TYPE not handled yet\n");
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_UCI_CQI_SR_PDU_TYPE) {
AssertFatal(1 == 0,
"NFAPI_UL_CONFIG_UCI_CQI_SR_PDU_TYPE not handled yet\n");
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_UCI_SR_PDU_TYPE) {
uint16_t rnti =
ul_config_pdu->uci_sr_pdu.ue_information.ue_information_rel8.rnti;
if (ue_get_SR(Mod_id, 0, frame, 0, rnti, subframe))
fill_sr_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, rnti, ul_config_req);
} else if (ul_config_pdu->pdu_type == NFAPI_UL_CONFIG_UCI_SR_HARQ_PDU_TYPE) {
// AssertFatal((UE_id =
// find_uci(rel8->rnti,proc->frame_tx,proc->subframe_tx,eNB,SEARCH_EXIST_OR_FREE))>=0,
// "No available UE UCI for rnti
// %x\n",ul_config_pdu->uci_sr_harq_pdu.ue_information.ue_information_rel8.rnti);
uint16_t rnti =
ul_config_pdu->uci_sr_harq_pdu.ue_information.ue_information_rel8.rnti;
// We fill the sr_indication only if ue_get_sr() would normally instruct PHY
// to send a SR.
if (ue_get_SR(Mod_id, 0, frame, 0, rnti, subframe))
fill_sr_indication_UE_MAC(Mod_id, frame, subframe, UL_INFO, rnti, ul_config_req);
nfapi_ul_config_harq_information *ulsch_harq_information =
&ul_config_pdu->uci_sr_harq_pdu.harq_information;
if (ulsch_harq_information != NULL)
fill_uci_harq_indication_UE_MAC(
Mod_id, frame, subframe, UL_INFO, ulsch_harq_information, rnti, ul_config_req);
}
}
int ul_config_req_UE_MAC(nfapi_ul_config_request_t *req,
int timer_frame,
int timer_subframe,
module_id_t Mod_id) {
LOG_D(PHY,
"[PNF] UL_CONFIG_REQ %s() sfn_sf:%d pdu:%d "
"rach_prach_frequency_resources:%d srs_present:%u\n",
__FUNCTION__,
NFAPI_SFNSF2DEC(req->sfn_sf),
req->ul_config_request_body.number_of_pdus,
req->ul_config_request_body.rach_prach_frequency_resources,
req->ul_config_request_body.srs_present);
LOG_D(MAC, "ul_config_req Frame: %d Subframe: %d Proxy Frame: %u Subframe: %u\n",
NFAPI_SFNSF2SFN(req->sfn_sf), NFAPI_SFNSF2SF(req->sfn_sf),
timer_frame, timer_subframe);
int sfn = NFAPI_SFNSF2SFN(req->sfn_sf);
int sf = NFAPI_SFNSF2SF(req->sfn_sf);
LOG_D(MAC,
"ul_config_req_UE_MAC() TOTAL NUMBER OF UL_CONFIG PDUs: %d, SFN/SF: "
"%d/%d \n",
req->ul_config_request_body.number_of_pdus,
timer_frame,
timer_subframe);
const rnti_t rnti = UE_mac_inst[Mod_id].crnti;
for (int i = 0; i < req->ul_config_request_body.number_of_pdus; i++) {
nfapi_ul_config_request_pdu_t* pdu = &req->ul_config_request_body.ul_config_pdu_list[i];
const int pdu_type = pdu->pdu_type;
if ( (pdu_type == NFAPI_UL_CONFIG_ULSCH_PDU_TYPE
&& pdu->ulsch_pdu.ulsch_pdu_rel8.rnti == rnti)
|| (pdu_type == NFAPI_UL_CONFIG_ULSCH_HARQ_PDU_TYPE
&& pdu->ulsch_harq_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti == rnti)
|| (pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE
&& pdu->ulsch_cqi_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti == rnti)
|| (pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE
&& pdu->ulsch_cqi_harq_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti == rnti)
|| (pdu_type == NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE
&& pdu->uci_cqi_harq_pdu.ue_information.ue_information_rel8.rnti == rnti)
|| (pdu_type == NFAPI_UL_CONFIG_UCI_SR_PDU_TYPE
&& pdu->uci_sr_pdu.ue_information.ue_information_rel8.rnti == rnti)
|| (pdu_type == NFAPI_UL_CONFIG_UCI_SR_HARQ_PDU_TYPE
&& pdu->uci_cqi_sr_harq_pdu.ue_information.ue_information_rel8.rnti == rnti)) {
handle_nfapi_ul_pdu_UE_MAC(
Mod_id, pdu, sfn, sf, req->ul_config_request_body.srs_present, i, req);
} else {
LOG_D(MAC, "UNKNOWN UL_CONFIG_REQ PDU_TYPE or RNTI not matching pdu type: %d\n", pdu_type);
}
}
return 0;
}
int tx_req_UE_MAC(nfapi_tx_request_t *req) {
LOG_D(PHY,
"%s() SFN/SF:%d/%d PDUs:%d\n",
__FUNCTION__,
NFAPI_SFNSF2SFN(req->sfn_sf),
NFAPI_SFNSF2SF(req->sfn_sf),
req->tx_request_body.number_of_pdus);
for (int i = 0; i < req->tx_request_body.number_of_pdus; i++) {
LOG_D(PHY,
"%s() SFN/SF:%d/%d number_of_pdus:%d [PDU:%d] pdu_length:%d "
"pdu_index:%d num_segments:%d\n",
__FUNCTION__,
NFAPI_SFNSF2SFN(req->sfn_sf),
NFAPI_SFNSF2SF(req->sfn_sf),
req->tx_request_body.number_of_pdus,
i,
req->tx_request_body.tx_pdu_list[i].pdu_length,
req->tx_request_body.tx_pdu_list[i].pdu_index,
req->tx_request_body.tx_pdu_list[i].num_segments);
}
return 0;
}
void dl_config_req_UE_MAC_dci(int sfn,
int sf,
nfapi_dl_config_request_pdu_t *dci,
nfapi_dl_config_request_pdu_t *dlsch,
int num_ue,
nfapi_tx_req_pdu_list_t *tx_req_pdu_list) {
DevAssert(dci->pdu_type == NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE);
DevAssert(dlsch->pdu_type == NFAPI_DL_CONFIG_DLSCH_PDU_TYPE);
const rnti_t rnti = dci->dci_dl_pdu.dci_dl_pdu_rel8.rnti;
const int rnti_type = dci->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type;
if (rnti != dlsch->dlsch_pdu.dlsch_pdu_rel8.rnti) {
LOG_E(MAC,
"%s(): sfn/sf %d.%d DLSCH PDU RNTI %x does not match DCI RNTI %x\n",
__func__, sfn, sf, rnti, dlsch->dlsch_pdu.dlsch_pdu_rel8.rnti);
return;
}
const int pdu_index = dlsch->dlsch_pdu.dlsch_pdu_rel8.pdu_index;
if (pdu_index < 0 || pdu_index >= tx_req_pdu_list->num_pdus) {
LOG_E(MAC,
"%s(): Problem with receiving data: "
"sfn/sf:%d.%d PDU size:%d, TX_PDU index: %d\n",
__func__,
sfn, sf, dci->pdu_size, dlsch->dlsch_pdu.dlsch_pdu_rel8.pdu_index);
return;
}
LOG_I(MAC, "%s() rnti value: 0x%x rnti type: %d\n", __func__,
rnti, rnti_type);
if (rnti_type == 1) { // C-RNTI (Normal DLSCH case)
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
if (UE_mac_inst[ue_id].crnti == rnti) {
LOG_D(MAC,
"%s() Received data: sfn/sf:%d.%d "
"size:%d, TX_PDU index: %d, tx_req_num_elems: %d \n",
__func__,
sfn, sf, dci->pdu_size,
dlsch->dlsch_pdu.dlsch_pdu_rel8.pdu_index,
tx_req_pdu_list->num_pdus);
if (node_number > 0 || !should_drop_transport_block(sf, dci->dci_dl_pdu.dci_dl_pdu_rel8.rnti))
{
ue_send_sdu(ue_id, 0, sfn, sf,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_data,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_length,
0);
}
else
{
LOG_I(MAC, "Transport Block discarded - ue_send_sdu not called. sf: %d", sf);
}
return;
}
}
} else if (rnti_type == 2) {
if (rnti == 0xFFFF) { /* SI-RNTI */
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
if (UE_mac_inst[ue_id].UE_mode[0] == NOT_SYNCHED)
continue;
ue_decode_si(ue_id, 0, sfn, 0,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_data,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_length);
}
} else if (rnti == 0xFFFE) { /* PI-RNTI */
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
LOG_I(MAC, "%s() Received paging message: sfn/sf:%d.%d\n",
__func__, sfn, sf);
ue_decode_p(ue_id, 0, sfn, 0,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_data,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_length);
}
} else if (rnti == 0x0002) { /* RA-RNTI */
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
if (UE_mac_inst[ue_id].UE_mode[0] != RA_RESPONSE) {
LOG_D(MAC, "UE %d not awaiting RAR, is in mode %d\n",
ue_id, UE_mac_inst[ue_id].UE_mode[0]);
continue;
}
// RNTI parameter not actually used. Provided only to comply with
// existing function definition. Not sure about parameters to fill
// the preamble index.
const rnti_t ra_rnti = UE_mac_inst[ue_id].RA_prach_resources.ra_RNTI;
DevAssert(ra_rnti == 0x0002);
if (UE_mac_inst[ue_id].UE_mode[0] != PUSCH
&& UE_mac_inst[ue_id].RA_prach_resources.Msg3 != NULL
&& ra_rnti == dlsch->dlsch_pdu.dlsch_pdu_rel8.rnti) {
LOG_E(MAC,
"%s(): Received RAR, PreambleIndex: %d\n",
__func__, UE_mac_inst[ue_id].RA_prach_resources.ra_PreambleIndex);
ue_process_rar(ue_id, 0, sfn,
ra_rnti, //RA-RNTI
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_data,
&UE_mac_inst[ue_id].crnti, //t-crnti
UE_mac_inst[ue_id].RA_prach_resources.ra_PreambleIndex,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_data);
// UE_mac_inst[ue_id].UE_mode[0] = RA_RESPONSE;
LOG_I(MAC, "setting UE_MODE now: %d\n", UE_mac_inst[ue_id].UE_mode[0]);
// Expecting an UL_CONFIG_ULSCH_PDU to enable Msg3 Txon (first
// ULSCH Txon for the UE)
UE_mac_inst[ue_id].first_ULSCH_Tx = 1;
}
}
}
//else if (dl_config_pdu_list[i].pdu_type == NFAPI_DL_CONFIG_BCH_PDU_TYPE) {
// // BCH case: Last parameter is 1 if first time synchronization and zero
// // otherwise. Not sure which value to put for our case.
// if (UE_mac_inst[Mod_id].UE_mode[0] == NOT_SYNCHED){
// dl_phy_sync_success(Mod_id, sfn, 0, 1);
// LOG_E(MAC,
// "%s(): Received MIB: UE_mode: %d, sfn/sf: %d.%d\n",
// __func__,
// UE_mac_inst[Mod_id].UE_mode[0],
// sfn,
// sf);
// UE_mac_inst[Mod_id].UE_mode[0] = PRACH;
// } else {
// dl_phy_sync_success(Mod_id, sfn, 0, 0);
// }
//} else if (dl_config_pdu_list[i].pdu_type == NFAPI_DL_CONFIG_MCH_PDU_TYPE){
// if (UE_mac_inst[Mod_id].UE_mode[0] == NOT_SYNCHED) {
// /* this check is in the code before refactoring, but I don't know
// * why. Leave it in here for the moment */
// continue;
// }
// nfapi_dl_config_request_pdu_t *dl_config_pdu_tmp = &dl_config_pdu_list[i];
// const int pdu_index = dl_config_pdu_tmp->dlsch_pdu.dlsch_pdu_rel8.pdu_index;
// ue_send_mch_sdu(Mod_id, 0, sfn,
// tx_request_pdu_list[pdu_index].segments[0].segment_data,
// tx_request_pdu_list[pdu_index].segments[0].segment_length,
// 0,0);
//}
else {
LOG_W(MAC, "can not handle special RNTI %x\n", rnti);
}
}
}
void dl_config_req_UE_MAC_bch(int sfn,
int sf,
nfapi_dl_config_request_pdu_t *bch,
int num_ue) {
DevAssert(bch->pdu_type == NFAPI_DL_CONFIG_BCH_PDU_TYPE);
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
if (UE_mac_inst[ue_id].UE_mode[0] == NOT_SYNCHED){
dl_phy_sync_success(ue_id, sfn, 0, 1);
LOG_E(MAC,
"%s(): Received MIB: UE_mode: %d, sfn/sf: %d.%d\n",
__func__,
UE_mac_inst[ue_id].UE_mode[0],
sfn,
sf);
UE_mac_inst[ue_id].UE_mode[0] = PRACH;
} else {
dl_phy_sync_success(ue_id, sfn, 0, 0);
}
}
}
void dl_config_req_UE_MAC_mch(int sfn,
int sf,
nfapi_dl_config_request_pdu_t *mch,
int num_ue,
nfapi_tx_req_pdu_list_t *tx_req_pdu_list) {
DevAssert(mch->pdu_type == NFAPI_DL_CONFIG_MCH_PDU_TYPE);
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
if (UE_mac_inst[ue_id].UE_mode[0] == NOT_SYNCHED){
LOG_D(MAC,
"%s(): Received MCH in NOT_SYNCHED: UE_mode: %d, sfn/sf: %d.%d\n",
__func__,
UE_mac_inst[ue_id].UE_mode[0],
sfn,
sf);
return;
} else {
const int pdu_index = mch->mch_pdu.mch_pdu_rel8.pdu_index;
if (pdu_index < 0 || pdu_index >= tx_req_pdu_list->num_pdus) {
LOG_E(MAC,
"%s(): Problem with receiving data: "
"sfn/sf:%d.%d PDU size:%d, TX_PDU index: %d\n",
__func__,
sfn, sf, mch->pdu_size, mch->mch_pdu.mch_pdu_rel8.pdu_index);
return;
}
ue_send_mch_sdu(ue_id, 0, sfn,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_data,
tx_req_pdu_list->pdus[pdu_index].segments[0].segment_length,
0,0);
}
}
}
void hi_dci0_req_UE_MAC(int sfn,
int sf,
nfapi_hi_dci0_request_pdu_t* hi_dci0,
int num_ue) {
if (hi_dci0->pdu_type != NFAPI_HI_DCI0_DCI_PDU_TYPE)
return;
const nfapi_hi_dci0_dci_pdu_rel8_t *dci = &hi_dci0->dci_pdu.dci_pdu_rel8;
if (!dci->cqi_csi_request)
return;
for (int ue_id = 0; ue_id < num_ue; ue_id++) {
if (dci->rnti == UE_mac_inst[ue_id].crnti) {
return;
}
}
}
// The following set of memcpy functions should be getting called as callback
// functions from pnf_p7_subframe_ind.
static bool is_my_ul_config_req(nfapi_ul_config_request_t *req)
{
bool is_my_rnti = false;
const rnti_t rnti = UE_mac_inst[0].crnti; // 0 for standalone pnf mode. TODO: Make this more clear - Andrew
for (int i = 0; i < req->ul_config_request_body.number_of_pdus; i++)
{
nfapi_ul_config_request_pdu_t *pdu = &req->ul_config_request_body.ul_config_pdu_list[i];
const int pdu_type = pdu->pdu_type;
if ((pdu_type == NFAPI_UL_CONFIG_ULSCH_PDU_TYPE && pdu->ulsch_pdu.ulsch_pdu_rel8.rnti == rnti) ||
(pdu_type == NFAPI_UL_CONFIG_ULSCH_HARQ_PDU_TYPE && pdu->ulsch_harq_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti == rnti) ||
(pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE && pdu->ulsch_cqi_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti == rnti) ||
(pdu_type == NFAPI_UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE && pdu->ulsch_cqi_harq_ri_pdu.ulsch_pdu.ulsch_pdu_rel8.rnti == rnti) ||
(pdu_type == NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE && pdu->uci_cqi_harq_pdu.ue_information.ue_information_rel8.rnti == rnti) ||
(pdu_type == NFAPI_UL_CONFIG_UCI_SR_PDU_TYPE && pdu->uci_sr_pdu.ue_information.ue_information_rel8.rnti == rnti) ||
(pdu_type == NFAPI_UL_CONFIG_UCI_SR_HARQ_PDU_TYPE && pdu->uci_cqi_sr_harq_pdu.ue_information.ue_information_rel8.rnti == rnti))
{
is_my_rnti = true;
break;
}
else
{
LOG_D(MAC, "UNKNOWN UL_CONFIG_REQ PDU_TYPE: %d or RNTI is not mine \n", pdu_type);
}
}
return is_my_rnti;
}
int memcpy_ul_config_req(L1_rxtx_proc_t *proc, nfapi_pnf_p7_config_t *pnf_p7, nfapi_ul_config_request_t *req)
{
if (!is_my_ul_config_req(req)) return 0;
nfapi_ul_config_request_t *p = malloc(sizeof(nfapi_ul_config_request_t));
p->sfn_sf = req->sfn_sf;
p->vendor_extension = req->vendor_extension;
p->ul_config_request_body.number_of_pdus = req->ul_config_request_body.number_of_pdus;
p->ul_config_request_body.rach_prach_frequency_resources = req->ul_config_request_body.rach_prach_frequency_resources;
p->ul_config_request_body.srs_present = req->ul_config_request_body.srs_present;
p->ul_config_request_body.tl.tag = req->ul_config_request_body.tl.tag;
p->ul_config_request_body.tl.length = req->ul_config_request_body.tl.length;
p->ul_config_request_body.ul_config_pdu_list =
calloc(req->ul_config_request_body.number_of_pdus,
sizeof(nfapi_ul_config_request_pdu_t));
for (int i = 0; i < p->ul_config_request_body.number_of_pdus; i++)
{
p->ul_config_request_body.ul_config_pdu_list[i] =
req->ul_config_request_body.ul_config_pdu_list[i];
}
if (!put_queue(&ul_config_req_queue, p))
{
free(p);
}
return 0;
}
void nfapi_free_tx_req_pdu_list(nfapi_tx_req_pdu_list_t *list)
{
// free all the p[i].segments[j].segment_data memory
int num_pdus = list->num_pdus;
nfapi_tx_request_pdu_t *pdus = list->pdus;
for (int i = 0; i < num_pdus; i++) {
int num_segments = pdus[i].num_segments;
for (int j = 0; j < num_segments; j++) {
free(pdus[i].segments[j].segment_data);
pdus[i].segments[j].segment_data = NULL;
}
}
free(list);
}
static bool is_my_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req)
{
bool is_my_rnti = false;
const rnti_t rnti = UE_mac_inst[0].crnti; // This is 0 representing the num_ues is 1
nfapi_hi_dci0_request_body_t *hi_dci0_body = &hi_dci0_req->hi_dci0_request_body;
for (int i = 0; i < hi_dci0_body->number_of_dci + hi_dci0_body->number_of_hi; i++)
{
nfapi_hi_dci0_request_pdu_t *hi_dci0 = &hi_dci0_body->hi_dci0_pdu_list[i];
if (hi_dci0->pdu_type != NFAPI_HI_DCI0_DCI_PDU_TYPE || hi_dci0->dci_pdu.dci_pdu_rel8.cqi_csi_request)
{
continue;
}
if (hi_dci0->dci_pdu.dci_pdu_rel8.rnti == rnti)
{
is_my_rnti = true;
break;
}
}
return is_my_rnti;
}
int memcpy_hi_dci0_req (L1_rxtx_proc_t *proc,
nfapi_pnf_p7_config_t* pnf_p7,
nfapi_hi_dci0_request_t* req) {
if (!is_my_hi_dci0_req(req))
{
LOG_I(MAC, "Filtering hi_dci0_req\n");
return 0;
}
nfapi_hi_dci0_request_t *p = (nfapi_hi_dci0_request_t *)malloc(sizeof(nfapi_hi_dci0_request_t));
//if(req!=0){
p->sfn_sf = req->sfn_sf;
p->vendor_extension = req->vendor_extension;
p->hi_dci0_request_body.number_of_dci = req->hi_dci0_request_body.number_of_dci;
p->hi_dci0_request_body.number_of_hi = req->hi_dci0_request_body.number_of_hi;
p->hi_dci0_request_body.sfnsf = req->hi_dci0_request_body.sfnsf;
// UE_mac_inst[Mod_id].p->hi_dci0_request_body.tl =
// req->hi_dci0_request_body.tl;
p->hi_dci0_request_body.tl.tag = req->hi_dci0_request_body.tl.tag;
p->hi_dci0_request_body.tl.length = req->hi_dci0_request_body.tl.length;
int total_pdus = p->hi_dci0_request_body.number_of_dci
+ p->hi_dci0_request_body.number_of_hi;
p->hi_dci0_request_body.hi_dci0_pdu_list =
calloc(total_pdus, sizeof(nfapi_hi_dci0_request_pdu_t));
for (int i = 0; i < total_pdus; i++) {
p->hi_dci0_request_body.hi_dci0_pdu_list[i] = req->hi_dci0_request_body.hi_dci0_pdu_list[i];
// LOG_I(MAC, "Original hi_dci0 req. type:%d, Copy type: %d
// \n",req->hi_dci0_request_body.hi_dci0_pdu_list[i].pdu_type,
// UE_mac_inst[Mod_id].p->hi_dci0_request_body.hi_dci0_pdu_list[i].pdu_type);
}
if (!put_queue(&hi_dci0_req_queue, p)) {
free(p);
}
LOG_I(MAC, "DCI0 QUEUE: %zu\n", hi_dci0_req_queue.num_items);
return 0;
}
void UE_config_stub_pnf(void) {
int j;
paramdef_t L1_Params[] = L1PARAMS_DESC;
paramlist_def_t L1_ParamList = {CONFIG_STRING_L1_LIST, NULL, 0};
config_getlist(&L1_ParamList, L1_Params, sizeof(L1_Params) / sizeof(paramdef_t), NULL);
if (L1_ParamList.numelt > 0) {
for (j = 0; j < L1_ParamList.numelt; j++) {
// nb_L1_CC = *(L1_ParamList.paramarray[j][L1_CC_IDX].uptr); // Number of
// component carriers is of no use for the
// phy_stub mode UE pnf. Maybe we can completely skip it.
if (strcmp(*(L1_ParamList.paramarray[j][L1_TRANSPORT_N_PREFERENCE_IDX].strptr), "local_mac") == 0) {
sf_ahead = 4; // Need 4 subframe gap between RX and TX
}
// Right now that we have only one UE (thread) it is ok to put the
// eth_params in the UE_mac_inst. Later I think we have to change that to
// attribute eth_params to a global element for all the UEs.
else if (strcmp(*(L1_ParamList.paramarray[j][L1_TRANSPORT_N_PREFERENCE_IDX].strptr), "nfapi") == 0) {
stub_eth_params.local_if_name = strdup(
*(L1_ParamList.paramarray[j][L1_LOCAL_N_IF_NAME_IDX].strptr));
stub_eth_params.my_addr = strdup(
*(L1_ParamList.paramarray[j][L1_LOCAL_N_ADDRESS_IDX].strptr));
stub_eth_params.remote_addr = strdup(
*(L1_ParamList.paramarray[j][L1_REMOTE_N_ADDRESS_IDX].strptr));
stub_eth_params.my_portc =
*(L1_ParamList.paramarray[j][L1_LOCAL_N_PORTC_IDX].iptr);
stub_eth_params.remote_portc =
*(L1_ParamList.paramarray[j][L1_REMOTE_N_PORTC_IDX].iptr);
stub_eth_params.my_portd =
*(L1_ParamList.paramarray[j][L1_LOCAL_N_PORTD_IDX].iptr);
stub_eth_params.remote_portd =
*(L1_ParamList.paramarray[j][L1_REMOTE_N_PORTD_IDX].iptr);
stub_eth_params.transp_preference = ETH_UDP_MODE;
sf_ahead = 2; // Cannot cope with 4 subframes betweem RX and TX - set it to 2
// configure_nfapi_pnf(UE_mac_inst[0].eth_params_n.remote_addr,
// UE_mac_inst[0].eth_params_n.remote_portc,
// UE_mac_inst[0].eth_params_n.my_addr,
// UE_mac_inst[0].eth_params_n.my_portd,
// UE_mac_inst[0].eth_params_n.remote_portd);
configure_nfapi_pnf(stub_eth_params.remote_addr,
stub_eth_params.remote_portc,
stub_eth_params.my_addr,
stub_eth_params.my_portd,
stub_eth_params.remote_portd);
}
}
}
}
void ue_init_standalone_socket(const char *addr, int tx_port, int rx_port)
{
{
struct sockaddr_in server_address;
int addr_len = sizeof(server_address);
memset(&server_address, 0, addr_len);
server_address.sin_family = AF_INET;
server_address.sin_port = htons(tx_port);
int sd = socket(server_address.sin_family, SOCK_DGRAM, 0);
if (sd < 0)
{
LOG_E(MAC, "Socket creation error standalone PNF\n");
return;
}
if (inet_pton(server_address.sin_family, addr, &server_address.sin_addr) <= 0)
{
LOG_E(MAC, "Invalid standalone PNF Address\n");
close(sd);
return;
}
// Using connect to use send() instead of sendto()
if (connect(sd, (struct sockaddr *)&server_address, addr_len) < 0)
{
LOG_E(MAC, "Connection to standalone PNF failed: %s\n", strerror(errno));
close(sd);
return;
}
assert(ue_tx_sock_descriptor == -1);
ue_tx_sock_descriptor = sd;
}
{
struct sockaddr_in server_address;
int addr_len = sizeof(server_address);
memset(&server_address, 0, addr_len);
server_address.sin_family = AF_INET;
server_address.sin_port = htons(rx_port);
int sd = socket(server_address.sin_family, SOCK_DGRAM, 0);
if (sd < 0)
{
LOG_E(MAC, "Socket creation error standalone PNF\n");
return;
}
if (inet_pton(server_address.sin_family, addr, &server_address.sin_addr) <= 0)
{
LOG_E(MAC, "Invalid standalone PNF Address\n");
close(sd);
return;
}
if (bind(sd, (struct sockaddr *)&server_address, addr_len) < 0)
{
LOG_E(MAC, "Connection to standalone PNF failed: %s\n", strerror(errno));
close(sd);
return;
}
assert(ue_rx_sock_descriptor == -1);
ue_rx_sock_descriptor = sd;
}
}
void *ue_standalone_pnf_task(void *context)
{
struct sockaddr_in server_address;
socklen_t addr_len = sizeof(server_address);
char buffer[NFAPI_MAX_PACKED_MESSAGE_SIZE];
int sd = ue_rx_sock_descriptor;
assert(sd > 0);
nfapi_tx_request_t tx_req;
nfapi_dl_config_request_t dl_config_req;
bool tx_req_valid = false;
bool dl_config_req_valid = false;
while (true)
{
ssize_t len = recvfrom(sd, buffer, sizeof(buffer), MSG_TRUNC, (struct sockaddr *)&server_address, &addr_len);
if (len == -1)
{
LOG_E(MAC, "reading from standalone pnf sctp socket failed \n");
continue;
}
if (len > sizeof(buffer))
{
LOG_E(MAC, "%s(%d). Message truncated. %zd\n", __FUNCTION__, __LINE__, len);
continue;
}
/* First we'll check for possible messages from the proxy. We do this by checking
the length of the message. This works because sizeof(uint16_t) < sizeof(nfapi_p7_message_header_t)
and sizeof(phy_channel_params_t) < sizeof(nfapi_p7_message_header_t) and
sizeof(uint16_t) != sizeof(phy_channel_params_t). */
if (len == sizeof(uint16_t))
{
uint16_t sfn_sf = 0;
memcpy((void *)&sfn_sf, buffer, sizeof(sfn_sf));
current_sfn_sf = sfn_sf;
if (sem_post(&sfn_semaphore) != 0)
{
LOG_E(MAC, "sem_post() error\n");
abort();
}
}
else if (len == sizeof(channel_info))
{
channel_info * ch_info = malloc(sizeof(channel_info));
memcpy(ch_info, buffer, sizeof(channel_info));
current_sfn_sf = ch_info->sfn_sf;
if (sem_post(&sfn_semaphore) != 0)
{
LOG_E(MAC, "sem_post() error\n");
abort();
}
uint16_t sf = ch_info->sfn_sf & 15;
if(sf > 10 && sf < 0)
{
LOG_E(MAC, "sf out of bounds, sfn: %d\n", sf);
abort();
}
sf_rnti_mcs[sf].sinr = ch_info->sinr;
LOG_D(MAC, "Received_SINR = %f\n",ch_info->sinr);
}
else if (len == sizeof(phy_channel_params_t))
{
phy_channel_params_t ch_info;
memcpy(&ch_info, buffer, sizeof(phy_channel_params_t));
current_sfn_sf = ch_info.sfn_sf;
if (sem_post(&sfn_semaphore) != 0)
{
LOG_E(MAC, "sem_post() error\n");
abort();
}
uint16_t sf = ch_info.sfn_sf & 15;
assert(sf < 10);
}
else
{
nfapi_p7_message_header_t header;
if (nfapi_p7_message_header_unpack((void *)buffer, len, &header, sizeof(header), NULL) < 0)
{
LOG_E(MAC, "Header unpack failed for standalone pnf\n");
continue;
}
switch (header.message_id)
{
case NFAPI_DL_CONFIG_REQUEST:
{
if (dl_config_req_valid)
{
LOG_W(MAC, "Received consecutive dl_config_reqs. Previous dl_config_req frame: %u, subframe: %u\n",
dl_config_req.sfn_sf >> 4, dl_config_req.sfn_sf & 15);
}
if (nfapi_p7_message_unpack((void *)buffer, len, &dl_config_req,
sizeof(dl_config_req), NULL) < 0)
{
LOG_E(MAC, "Message dl_config_req failed to unpack\n");
break;
}
LOG_I(MAC, "dl_config_req Frame: %u Subframe: %u\n", dl_config_req.sfn_sf >> 4,
dl_config_req.sfn_sf & 15);
dl_config_req_valid = true;
save_dci_pdu_for_crnti(&dl_config_req);
if (tx_req_valid)
{
if (dl_config_req.sfn_sf != tx_req.sfn_sf)
{
LOG_W(MAC, "sfnsf mismatch. dl_config_req Frame: %u Subframe: %u, Discarding tx_req Frame: %u Subframe: %u\n",
dl_config_req.sfn_sf >> 4, dl_config_req.sfn_sf & 15,
tx_req.sfn_sf >> 4, tx_req.sfn_sf & 15);
tx_req_valid = false;
break;
}
enqueue_dl_config_req_tx_req(&dl_config_req, &tx_req);
dl_config_req_valid = false;
tx_req_valid = false;
}
break;
}
case NFAPI_TX_REQUEST:
{
if (tx_req_valid)
{
LOG_W(MAC, "Received consecutive tx_reqs. Previous tx_req frame: %u, subframe: %u\n",
tx_req.sfn_sf >> 4, tx_req.sfn_sf & 15);
}
if (nfapi_p7_message_unpack((void *)buffer, len, &tx_req,
sizeof(tx_req), NULL) < 0)
{
LOG_E(MAC, "Message tx_req failed to unpack\n");
break;
}
LOG_I(MAC, "tx_req Frame: %u Subframe: %u\n", tx_req.sfn_sf >> 4,
tx_req.sfn_sf & 15);
tx_req_valid = true;
if (dl_config_req_valid)
{
if (dl_config_req.sfn_sf != tx_req.sfn_sf)
{
LOG_W(MAC, "sfnsf mismatch. Discarding dl_config_req Frame: %u Subframe: %u, tx_req Frame: %u Subframe: %u\n",
dl_config_req.sfn_sf >> 4, dl_config_req.sfn_sf & 15,
tx_req.sfn_sf >> 4, tx_req.sfn_sf & 15);
dl_config_req_valid = false;
break;
}
enqueue_dl_config_req_tx_req(&dl_config_req, &tx_req);
dl_config_req_valid = false;
tx_req_valid = false;
}
break;
}
case NFAPI_HI_DCI0_REQUEST:
{
nfapi_hi_dci0_request_t hi_dci0_req;
// lock this hi_dci0_req
if (nfapi_p7_message_unpack((void *)buffer, len, &hi_dci0_req,
sizeof(hi_dci0_req), NULL) < 0)
{
LOG_E(MAC, "Message hi_dci0_req failed to unpack\n");
break;
}
// check to see if hi_dci0_req is null
memcpy_hi_dci0_req(NULL, NULL, &hi_dci0_req);
break;
}
case NFAPI_UL_CONFIG_REQUEST:
{
nfapi_ul_config_request_t ul_config_req;
// lock this ul_config_req
if (nfapi_p7_message_unpack((void *)buffer, len, &ul_config_req,
sizeof(ul_config_req), NULL) < 0)
{
LOG_E(MAC, "Message ul_config_req failed to unpack\n");
break;
}
// check to see if ul_config_req is null
memcpy_ul_config_req(NULL, NULL, &ul_config_req);
break;
}
default:
LOG_E(MAC, "Case Statement has no corresponding nfapi message\n");
break;
}
}
}
}
static void save_dci_pdu_for_crnti(nfapi_dl_config_request_t *dl_config_req)
{
int count_sent = 0;
int number_of_dci = dl_config_req->dl_config_request_body.number_dci;
int number_of_pdu = dl_config_req->dl_config_request_body.number_pdu;
if (number_of_pdu <= 0)
{
LOG_E(MAC, "%s: dl_config_req pdu size <= 0\n", __FUNCTION__);
abort();
}
if (number_of_dci > 0)
{
for (int n = 0; n < number_of_pdu; n++)
{
const nfapi_dl_config_request_pdu_t *current_pdu_list = &dl_config_req->dl_config_request_body.dl_config_pdu_list[n];
int rnti_type = current_pdu_list->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type;
if (current_pdu_list->pdu_type == NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE && rnti_type == 1 && count_sent < number_of_dci)
{
read_channel_param(current_pdu_list, (dl_config_req->sfn_sf & 15), count_sent);
count_sent++;
}
}
}
}
void *memcpy_dl_config_req_standalone(nfapi_dl_config_request_t *dl_config_req)
{
nfapi_dl_config_request_t *p = malloc(sizeof(nfapi_dl_config_request_t));
p->sfn_sf = dl_config_req->sfn_sf;
p->vendor_extension = dl_config_req->vendor_extension;
p->dl_config_request_body.number_dci = dl_config_req->dl_config_request_body.number_dci;
p->dl_config_request_body.number_pdcch_ofdm_symbols = dl_config_req->dl_config_request_body.number_pdcch_ofdm_symbols;
p->dl_config_request_body.number_pdsch_rnti = dl_config_req->dl_config_request_body.number_pdsch_rnti;
p->dl_config_request_body.number_pdu = dl_config_req->dl_config_request_body.number_pdu;
p->dl_config_request_body.tl.tag = dl_config_req->dl_config_request_body.tl.tag;
p->dl_config_request_body.tl.length = dl_config_req->dl_config_request_body.tl.length;
p->dl_config_request_body.dl_config_pdu_list =
calloc(dl_config_req->dl_config_request_body.number_pdu,
sizeof(nfapi_dl_config_request_pdu_t));
for (int i = 0; i < p->dl_config_request_body.number_pdu; i++) {
p->dl_config_request_body.dl_config_pdu_list[i] =
dl_config_req->dl_config_request_body.dl_config_pdu_list[i];
}
return p;
}
void *memcpy_tx_req_standalone(nfapi_tx_request_t *tx_req)
{
int num_pdus = tx_req->tx_request_body.number_of_pdus;
nfapi_tx_req_pdu_list_t *list = calloc(1, sizeof(nfapi_tx_req_pdu_list_t) + num_pdus * sizeof(nfapi_tx_request_pdu_t));
list->num_pdus = num_pdus;
nfapi_tx_request_pdu_t *p = list->pdus;
for (int i = 0; i < num_pdus; i++)
{
p[i].num_segments = tx_req->tx_request_body.tx_pdu_list[i].num_segments;
p[i].pdu_index = tx_req->tx_request_body.tx_pdu_list[i].pdu_index;
p[i].pdu_length = tx_req->tx_request_body.tx_pdu_list[i].pdu_length;
for (int j = 0; j < tx_req->tx_request_body.tx_pdu_list[i].num_segments; j++)
{
p[i].segments[j].segment_length = tx_req->tx_request_body.tx_pdu_list[i].segments[j].segment_length;
if (p[i].segments[j].segment_length > 0)
{
p[i].segments[j].segment_data = calloc(
p[i].segments[j].segment_length, sizeof(uint8_t));
memcpy(p[i].segments[j].segment_data,
tx_req->tx_request_body.tx_pdu_list[i].segments[j].segment_data,
p[i].segments[j].segment_length);
}
}
}
return list;
}
static bool is_my_dl_config_req(const nfapi_dl_config_request_t *req)
{
const rnti_t my_rnti = UE_mac_inst[0].crnti;
int num_pdus = req->dl_config_request_body.number_pdu;
// look through list of pdus for rnti type 1 with my_rnti (normal dlsch case)
for (int i = 0; i < num_pdus; i++)
{
nfapi_dl_config_request_pdu_t *pdu = &req->dl_config_request_body.dl_config_pdu_list[i];
const int pdu_type = pdu->pdu_type;
if (pdu_type == NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE)
{
const rnti_t dci_rnti = pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti;
const int rnti_type = pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type;
if (rnti_type == 1 && dci_rnti == my_rnti)
{
return true;
}
}
else if(pdu_type != NFAPI_DL_CONFIG_DLSCH_PDU_TYPE)
{
return true; // Because these two pdu_types are coupled and we have to accept all other pdu_types
}
}
// Look for broadcasted rnti types
for (int i = 0; i < num_pdus; i++)
{
nfapi_dl_config_request_pdu_t *pdu = &req->dl_config_request_body.dl_config_pdu_list[i];
const int pdu_type = pdu->pdu_type;
if (pdu_type == NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE)
{
const int rnti_type = pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti_type;
if (rnti_type != 1)
{
return true;
}
}
}
return false;
}
void enqueue_dl_config_req_tx_req(nfapi_dl_config_request_t *dl_config_req, nfapi_tx_request_t *tx_req)
{
if (!is_my_dl_config_req(dl_config_req))
{
LOG_I(MAC, "Filtering dl_config_req and tx_req\n");
return;
}
nfapi_dl_config_request_t *dl_config_req_temp = memcpy_dl_config_req_standalone(dl_config_req);
nfapi_tx_req_pdu_list_t *tx_req_temp = memcpy_tx_req_standalone(tx_req);
LOG_I(MAC, "This is the num_pdus for tx_req: %d\n", tx_req_temp->num_pdus);
LOG_I(MAC, "This is the num_pdus for dl_config_req and the sfn_sf: %d, %d:%d\n", dl_config_req_temp->dl_config_request_body.number_pdu,
NFAPI_SFNSF2SFN(dl_config_req_temp->sfn_sf), NFAPI_SFNSF2SF(dl_config_req_temp->sfn_sf));
nfapi_dl_config_req_tx_req_t *req = malloc(sizeof(nfapi_dl_config_req_tx_req_t));
req->dl_config_req = dl_config_req_temp;
req->tx_req_pdu_list = tx_req_temp;
if (!put_queue(&dl_config_req_tx_req_queue, req))
{
free(req->dl_config_req);
nfapi_free_tx_req_pdu_list(req->tx_req_pdu_list);
free(req);
}
}
__attribute__((unused))
static void print_rx_ind(nfapi_rx_indication_t *p)
{
printf("Printing RX_IND fields\n");
printf("header.message_id: %u\n", p->header.message_id);
printf("header.phy_id: %u\n", p->header.phy_id);
printf("header.message_id: %u\n", p->header.message_id);
printf("header.m_segment_sequence: %u\n", p->header.m_segment_sequence);
printf("header.checksum: %u\n", p->header.checksum);
printf("header.transmit_timestamp: %u\n", p->header.transmit_timestamp);
printf("sfn_sf: %u\n", p->sfn_sf);
printf("rx_indication_body.tl.tag: 0x%x\n", p->rx_indication_body.tl.tag);
printf("rx_indication_body.tl.length: %u\n", p->rx_indication_body.tl.length);
printf("rx_indication_body.number_of_pdus: %u\n", p->rx_indication_body.number_of_pdus);
assert(p->rx_indication_body.number_of_pdus <= NFAPI_RX_IND_MAX_PDU);
nfapi_rx_indication_pdu_t *pdu = p->rx_indication_body.rx_pdu_list;
for (int i = 0; i < p->rx_indication_body.number_of_pdus; i++)
{
printf("pdu %d nfapi_rx_ue_information.tl.tag: 0x%x\n", i, pdu->rx_ue_information.tl.tag);
printf("pdu %d nfapi_rx_ue_information.tl.length: %u\n", i, pdu->rx_ue_information.tl.length);
printf("pdu %d nfapi_rx_ue_information.handle: %u\n", i, pdu->rx_ue_information.handle);
printf("pdu %d nfapi_rx_ue_information.rnti: %u\n", i, pdu->rx_ue_information.rnti);
printf("pdu %d nfapi_rx_indication_rel8.tl.tag: 0x%x\n", i, pdu->rx_indication_rel8.tl.tag);
printf("pdu %d nfapi_rx_indication_rel8.tl.length: %u\n", i, pdu->rx_indication_rel8.tl.length);
printf("pdu %d nfapi_rx_indication_rel8.length: %u\n", i, pdu->rx_indication_rel8.length);
printf("pdu %d nfapi_rx_indication_rel8.offset: %u\n", i, pdu->rx_indication_rel8.offset);
printf("pdu %d nfapi_rx_indication_rel8.ul_cqi: %u\n", i, pdu->rx_indication_rel8.ul_cqi);
printf("pdu %d nfapi_rx_indication_rel8.timing_advance: %u\n", i, pdu->rx_indication_rel8.timing_advance);
printf("pdu %d nfapi_rx_indication_rel9.tl.tag: 0x%x\n", i, pdu->rx_indication_rel9.tl.tag);
printf("pdu %d nfapi_rx_indication_rel9.tl.length: %u\n", i, pdu->rx_indication_rel9.tl.length);
printf("pdu %d nfapi_rx_indication_rel9.timing_advance_r9: %u\n", i, pdu->rx_indication_rel9.timing_advance_r9);
}
fflush(stdout);
}
void send_standalone_msg(UL_IND_t *UL, nfapi_message_id_e msg_type)
{
int encoded_size = -1;
char buffer[NFAPI_MAX_PACKED_MESSAGE_SIZE];
switch (msg_type)
{
case NFAPI_RACH_INDICATION:
encoded_size = nfapi_p7_message_pack(&UL->rach_ind, buffer, sizeof(buffer), NULL);
LOG_A(MAC, "RACH_IND sent to Proxy, Size: %d Frame %d Subframe %d\n", encoded_size,
NFAPI_SFNSF2SFN(UL->rach_ind.sfn_sf), NFAPI_SFNSF2SF(UL->rach_ind.sfn_sf));
break;
case NFAPI_CRC_INDICATION:
encoded_size = nfapi_p7_message_pack(&UL->crc_ind, buffer, sizeof(buffer), NULL);
LOG_I(MAC, "CRC_IND sent to Proxy, Size: %d Frame %d Subframe %d num_crcs: %u\n", encoded_size,
NFAPI_SFNSF2SFN(UL->crc_ind.sfn_sf), NFAPI_SFNSF2SF(UL->crc_ind.sfn_sf),
UL->crc_ind.crc_indication_body.number_of_crcs);
break;
case NFAPI_RX_ULSCH_INDICATION:
encoded_size = nfapi_p7_message_pack(&UL->rx_ind, buffer, sizeof(buffer), NULL);
LOG_I(MAC, "RX_IND sent to Proxy, Size: %d Frame %d Subframe %d rx_ind.tl.length: %u num_pdus: %u\n",
encoded_size, NFAPI_SFNSF2SFN(UL->rx_ind.sfn_sf), NFAPI_SFNSF2SF(UL->rx_ind.sfn_sf),
UL->rx_ind.rx_indication_body.tl.length, UL->rx_ind.rx_indication_body.number_of_pdus);
break;
case NFAPI_RX_CQI_INDICATION:
encoded_size = nfapi_p7_message_pack(&UL->cqi_ind, buffer, sizeof(buffer), NULL);
LOG_I(MAC, "CQI_IND sent to Proxy, Size: %d num_cqis: %u\n", encoded_size,
UL->cqi_ind.cqi_indication_body.number_of_cqis);
break;
case NFAPI_HARQ_INDICATION:
encoded_size = nfapi_p7_message_pack(&UL->harq_ind, buffer, sizeof(buffer), NULL);
LOG_I(MAC, "HARQ_IND sent to Proxy, Size: %d Frame %d Subframe %d\n", encoded_size,
NFAPI_SFNSF2SFN(UL->harq_ind.sfn_sf), NFAPI_SFNSF2SF(UL->harq_ind.sfn_sf));
break;
case NFAPI_RX_SR_INDICATION:
encoded_size = nfapi_p7_message_pack(&UL->sr_ind, buffer, sizeof(buffer), NULL);
LOG_I(MAC, "SR_IND sent to Proxy, Size: %d\n", encoded_size);
break;
default:
LOG_I(MAC, "%s Unknown Message msg_type :: %u\n", __func__, msg_type);
return;
}
if (encoded_size < 0)
{
LOG_E(MAC, "standalone pack failed\n");
return;
}
if (send(ue_tx_sock_descriptor, buffer, encoded_size, 0) < 0)
{
LOG_E(MAC, "Send Proxy UE failed\n");
return;
}
}
void send_standalone_dummy()
{
static const uint16_t dummy[] = {0, 0};
if (send(ue_tx_sock_descriptor, dummy, sizeof(dummy), 0) < 0)
{
LOG_E(MAC, "send dummy to OAI UE failed: %s\n", strerror(errno));
return;
}
}
const char *dl_pdu_type_to_string(uint8_t pdu_type)
{
switch (pdu_type)
{
case NFAPI_DL_CONFIG_DCI_DL_PDU_TYPE:
return "DCI_DL_PDU_TYPE";
case NFAPI_DL_CONFIG_BCH_PDU_TYPE:
return "BCH_PDU_TYPE";
case NFAPI_DL_CONFIG_MCH_PDU_TYPE:
return "MCH_PDU_TYPE";
case NFAPI_DL_CONFIG_DLSCH_PDU_TYPE:
return "DLSCH_PDU_TYPE";
case NFAPI_DL_CONFIG_PCH_PDU_TYPE:
return "PCH_PDU_TYPE";
case NFAPI_DL_CONFIG_PRS_PDU_TYPE:
return "PRS_PDU_TYPE";
case NFAPI_DL_CONFIG_CSI_RS_PDU_TYPE:
return "CSI_RS_PDU_TYPE";
case NFAPI_DL_CONFIG_EPDCCH_DL_PDU_TYPE:
return "EPDCCH_DL_PDU_TYPE";
case NFAPI_DL_CONFIG_MPDCCH_PDU_TYPE:
return "MPDCCH_PDU_TYPE";
case NFAPI_DL_CONFIG_NBCH_PDU_TYPE:
return "NBCH_PDU_TYPE";
case NFAPI_DL_CONFIG_NPDCCH_PDU_TYPE:
return "NPDCCH_PDU_TYPE";
case NFAPI_DL_CONFIG_NDLSCH_PDU_TYPE:
return "NDLSCH_PDU_TYPE";
default:
LOG_E(MAC, "%s No corresponding PDU for type: %u\n", __func__, pdu_type);
return "UNKNOWN";
}
}
const char *ul_pdu_type_to_string(uint8_t pdu_type)
{
switch (pdu_type)
{
case NFAPI_UL_CONFIG_ULSCH_PDU_TYPE:
return "UL_CONFIG_ULSCH_PDU_TYPE";
case NFAPI_UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE:
return "UL_CONFIG_ULSCH_CQI_RI_PDU_TYPE";
case NFAPI_UL_CONFIG_ULSCH_HARQ_PDU_TYPE:
return "UL_CONFIG_ULSCH_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE:
return "UL_CONFIG_ULSCH_CQI_HARQ_RI_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_CQI_PDU_TYPE:
return "UL_CONFIG_UCI_CQI_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_SR_PDU_TYPE:
return "UCI_SR_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_HARQ_PDU_TYPE:
return "UCI_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_SR_HARQ_PDU_TYPE:
return "UCI_SR_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_CQI_HARQ_PDU_TYPE:
return "UCI_CQI_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_CQI_SR_PDU_TYPE:
return "UCI_CQI_SR_PDU_TYPE";
case NFAPI_UL_CONFIG_UCI_CQI_SR_HARQ_PDU_TYPE:
return "UCI_CQI_SR_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_SRS_PDU_TYPE:
return "SRS_PDU_TYPE";
case NFAPI_UL_CONFIG_HARQ_BUFFER_PDU_TYPE:
return "HARQ_BUFFER_PDU_TYPE";
case NFAPI_UL_CONFIG_ULSCH_UCI_CSI_PDU_TYPE:
return "PDU_TYPE";
case NFAPI_UL_CONFIG_ULSCH_UCI_HARQ_PDU_TYPE:
return "ULSCH_UCI_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_ULSCH_CSI_UCI_HARQ_PDU_TYPE:
return "ULSCH_CSI_UCI_HARQ_PDU_TYPE";
case NFAPI_UL_CONFIG_NULSCH_PDU_TYPE:
return "NULSCH_PDU_TYPE";
case NFAPI_UL_CONFIG_NRACH_PDU_TYPE:
return "NRACH_PDU_TYPE";
default:
LOG_E(MAC, "%s No corresponding PDU for type: %u\n", __func__, pdu_type);
return "UNKNOWN";
}
}
char *nfapi_dl_config_req_to_string(nfapi_dl_config_request_t *req)
{
const size_t max_result = 1024;
uint16_t num_pdus = req->dl_config_request_body.number_pdu;
int subframe = req->sfn_sf & 15;
int frame = req->sfn_sf >> 4;
char *result = malloc(max_result);
snprintf(result, max_result, "num_pdus=%u Frame=%d Subframe=%d",
num_pdus, frame, subframe);
for (size_t i = 0; i < num_pdus; ++i)
{
int len = strlen(result);
if (len >= max_result - 1)
{
break;
}
snprintf(result + len, max_result - len, " pdu_type=%s",
dl_pdu_type_to_string(req->dl_config_request_body.dl_config_pdu_list[i].pdu_type));
}
return result;
}
char *nfapi_ul_config_req_to_string(nfapi_ul_config_request_t *req)
{
const size_t max_result = 1024;
uint16_t num_pdus = req->ul_config_request_body.number_of_pdus;
int subframe = req->sfn_sf & 15;
int frame = req->sfn_sf >> 4;
char *result = malloc(max_result);
snprintf(result, max_result, "num_pdus=%u Frame=%d Subframe=%d",
num_pdus, frame, subframe);
for (size_t i = 0; i < num_pdus; ++i)
{
int len = strlen(result);
if (len >= max_result - 1)
{
break;
}
snprintf(result + len, max_result - len, " pdu_type=%s",
ul_pdu_type_to_string(req->ul_config_request_body.ul_config_pdu_list[i].pdu_type));
}
return result;
}
/* Dummy functions*/
void handle_nfapi_hi_dci0_dci_pdu(
PHY_VARS_eNB * eNB,
int frame,
int subframe,
L1_rxtx_proc_t *proc,
nfapi_hi_dci0_request_pdu_t *hi_dci0_config_pdu)
{
}
void handle_nfapi_hi_dci0_hi_pdu(
PHY_VARS_eNB * eNB,
int frame,
int subframe,
L1_rxtx_proc_t *proc,
nfapi_hi_dci0_request_pdu_t *hi_dci0_config_pdu)
{
}
void handle_nfapi_dci_dl_pdu(PHY_VARS_eNB * eNB,
int frame,
int subframe,
L1_rxtx_proc_t *proc,
nfapi_dl_config_request_pdu_t *dl_config_pdu)
{
}
void handle_nfapi_bch_pdu(PHY_VARS_eNB * eNB,
L1_rxtx_proc_t * proc,
nfapi_dl_config_request_pdu_t * dl_config_pdu,
uint8_t * sdu)
{
}
void handle_nfapi_dlsch_pdu(PHY_VARS_eNB * eNB,
int frame,
int subframe,
L1_rxtx_proc_t *proc,
nfapi_dl_config_request_pdu_t *dl_config_pdu,
uint8_t codeword_index,
uint8_t *sdu)
{
}
void handle_nfapi_ul_pdu(PHY_VARS_eNB * eNB,
L1_rxtx_proc_t * proc,
nfapi_ul_config_request_pdu_t * ul_config_pdu,
uint16_t frame,
uint8_t subframe,
uint8_t srs_present)
{
}
void handle_nfapi_mch_pdu(PHY_VARS_eNB * eNB,
L1_rxtx_proc_t * proc,
nfapi_dl_config_request_pdu_t * dl_config_pdu,
uint8_t * sdu)
{
}
void phy_config_request(PHY_Config_t * phy_config)
{
}
void phy_config_update_sib2_request(PHY_Config_t * phy_config)
{
}
void phy_config_update_sib13_request(PHY_Config_t * phy_config)
{
}
uint32_t from_earfcn(int eutra_bandP, uint32_t dl_earfcn)
{
return (0);
}
int32_t get_uldl_offset(int eutra_bandP)
{
return (0);
}
int l1_north_init_eNB(void)
{
return 0;
}
void init_eNB_afterRU(void)
{
}
static int get_mcs_from_sinr(float sinr)
{
if (sinr < (bler_data[0].bler_table[0][0]))
{
LOG_I(MAC, "The SINR was found is smaller than first MCS table\n");
return 0;
}
if (sinr > (bler_data[NUM_MCS-1].bler_table[bler_data[NUM_MCS-1].length - 1][0]))
{
LOG_I(MAC, "The SINR was found is larger than last MCS table\n");
return NUM_MCS-1;
}
for (int n = NUM_MCS-1; n >= 0; n--)
{
CHECK_INDEX(bler_data, n);
float largest_sinr = (bler_data[n].bler_table[bler_data[n].length - 1][0]);
float smallest_sinr = (bler_data[n].bler_table[0][0]);
if (sinr < largest_sinr && sinr > smallest_sinr)
{
LOG_I(MAC, "The SINR was found in MCS %d table\n", n);
return n;
}
}
LOG_E(MAC, "Unable to get an MCS value.\n");
abort();
}
static int get_cqi_from_mcs(void)
{
static const int mcs_to_cqi[] = {0, 1, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15};
assert(NUM_ELEMENTS(mcs_to_cqi) == NUM_MCS);
int sf = 0;
while(sf < NUM_NFAPI_SUBFRAME)
{
if (sf_rnti_mcs[sf].latest)
{
int pdu_size = sf_rnti_mcs[sf].pdu_size;
if (pdu_size <= 0)
{
LOG_E(MAC, "%s: sf_rnti_mcs[%d].pdu_size = 0\n", __FUNCTION__, sf);
abort();
}
CHECK_INDEX(sf_rnti_mcs[sf].mcs, pdu_size);
int mcs = get_mcs_from_sinr(sf_rnti_mcs[sf].sinr);
CHECK_INDEX(mcs_to_cqi, mcs);
int cqi = mcs_to_cqi[mcs];
LOG_I(MAC, "SINR: %f -> MCS: %d -> CQI: %d\n", sf_rnti_mcs[sf].sinr, mcs, cqi);
return cqi;
}
sf++;
}
LOG_E(MAC, "Unable to get CQI value because no MCS found\n");
abort();
}
static void read_channel_param(const nfapi_dl_config_request_pdu_t * pdu, int sf, int index)
{
if (pdu == NULL)
{
LOG_E(MAC,"PDU NULL\n");
abort();
}
/* This function is executed for every dci pdu type in a dl_config_req. We save
the assocaited MCS and RNTI value for each. The 'index' passed in is a count of
how many times we have called this function for a particular dl_config_req. It
allows us to save MCS/RNTI data in correct indicies when multiple dci's are received.*/
for (int i = 0; i < NUM_NFAPI_SUBFRAME; i++)
{
if (i == sf)
{
CHECK_INDEX(sf_rnti_mcs[sf].rnti, index);
CHECK_INDEX(sf_rnti_mcs[sf].mcs, index);
CHECK_INDEX(sf_rnti_mcs[sf].drop_flag, index);
sf_rnti_mcs[sf].rnti[index] = pdu->dci_dl_pdu.dci_dl_pdu_rel8.rnti;
sf_rnti_mcs[sf].mcs[index] = pdu->dci_dl_pdu.dci_dl_pdu_rel8.mcs_1;
sf_rnti_mcs[sf].drop_flag[index] = false;
sf_rnti_mcs[sf].pdu_size = index+1; //index starts at 0 so we incrament to get num of pdus
sf_rnti_mcs[sf].latest = true;
LOG_I(MAC, "Adding MCS %d and RNTI %x for sf_rnti_mcs[%d]\n", sf_rnti_mcs[sf].mcs[index], sf_rnti_mcs[sf].rnti[index], sf);
}
else
{
sf_rnti_mcs[i].latest = false;
}
}
return;
}
static bool did_drop_transport_block(int sf, uint16_t rnti)
{
int pdu_size = sf_rnti_mcs[sf].pdu_size;
if(pdu_size <= 0)
{
LOG_E(MAC, "Problem, the PDU size is <= 0. We dropped this packet\n");
return true;
}
CHECK_INDEX(sf_rnti_mcs[sf].rnti, pdu_size);
CHECK_INDEX(sf_rnti_mcs[sf].drop_flag, pdu_size);
for (int n = 0; n < pdu_size; n++)
{
if (sf_rnti_mcs[sf].rnti[n] == rnti && sf_rnti_mcs[sf].drop_flag[n])
{
return true;
}
}
return false;
}
static float get_bler_val(uint8_t mcs, int sinr)
{
// 4th col = dropped packets, 5th col = total packets
float bler_val = 0.0;
CHECK_INDEX(bler_data, mcs);
if (sinr < (int)(bler_data[mcs].bler_table[0][0] * 10))
{
LOG_I(MAC, "MCS %d table. SINR is smaller than lowest SINR, bler_val is set based on lowest SINR in table\n", mcs);
bler_val = bler_data[mcs].bler_table[0][4] / bler_data[mcs].bler_table[0][5];
return bler_val;
}
if (sinr > (int)(bler_data[mcs].bler_table[bler_data[mcs].length - 1][0] * 10))
{
LOG_I(MAC, "MCS %d table. SINR is greater than largest SINR. bler_val is set based on largest SINR in table\n", mcs);
bler_val = bler_data[mcs].bler_table[(bler_data[mcs].length - 1)][4] / bler_data[mcs].bler_table[(bler_data[mcs].length - 1)][5];
return bler_val;
}
// Loop through bler table to find sinr_index
for (int i = 0; i < bler_data[mcs].length; i++)
{
int temp_sinr = (int)(bler_data[mcs].bler_table[i][0] * 10);
if (temp_sinr == sinr)
{
bler_val = bler_data[mcs].bler_table[i][4] / bler_data[mcs].bler_table[i][5];
return bler_val;
}
// Linear interpolation when SINR is between indices
if (temp_sinr > sinr)
{
float bler_val1 = bler_data[mcs].bler_table[i - 1][4] / bler_data[mcs].bler_table[i - 1][5];
float bler_val2 = bler_data[mcs].bler_table[i][4] / bler_data[mcs].bler_table[i][5];
return ((bler_val1 + bler_val2) / 2);
}
}
LOG_E(MAC, "NO SINR INDEX FOUND!\n");
abort();
}
static bool should_drop_transport_block(int sf, uint16_t rnti)
{
/* Get block error rate (bler_val) from table based on every saved
MCS and SINR to be used as the cutoff rate for dropping packets.
Generate random uniform vairable to compare against bler_val. */
int pdu_size = sf_rnti_mcs[sf].pdu_size;
assert(sf < 10 && sf >= 0);
assert(pdu_size > 0);
CHECK_INDEX(sf_rnti_mcs[sf].rnti, pdu_size);
CHECK_INDEX(sf_rnti_mcs[sf].mcs, pdu_size);
CHECK_INDEX(sf_rnti_mcs[sf].drop_flag, pdu_size);
int n = 0;
uint8_t mcs = 99;
for (n = 0; n < pdu_size; n++)
{
if (sf_rnti_mcs[sf].rnti[n] == rnti)
{
mcs = sf_rnti_mcs[sf].mcs[n];
}
if (mcs != 99)
{
/* Use MCS to get the bler value. Since there can be multiple MCS
values for a particular subframe, we verify that all PDUs are not
flagged for drop before returning. If even one is flagged for drop
we return immediately because we drop the entire packet. */
float bler_val = get_bler_val(mcs, ((int)(sf_rnti_mcs[sf].sinr * 10)));
double drop_cutoff = ((double) rand() / (RAND_MAX));
assert(drop_cutoff <= 1);
LOG_I(MAC, "SINR = %f, Bler_val = %f, MCS = %"PRIu8"\n", sf_rnti_mcs[sf].sinr, bler_val, sf_rnti_mcs[sf].mcs[n]);
if (drop_cutoff <= bler_val)
{
sf_rnti_mcs[sf].drop_flag[n] = true;
LOG_D(MAC, "We are dropping this packet. Bler_val = %f, MCS = %"PRIu8", sf = %d\n", bler_val, sf_rnti_mcs[sf].mcs[n], sf);
return sf_rnti_mcs[sf].drop_flag[n];
}
}
}
if (mcs == 99)
{
LOG_E(MAC, "NO MCS Found for rnti %x. sf_rnti_mcs[%d].mcs[%d] \n", rnti, sf, n);
abort();
}
return false;
}
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