maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

proper adaptation of seed depending on iq replay/record or not

Browse Source
This commit is contained in:
Bruno Mongazon-Cazavet
2023-03-06 18:39:20 +01:00
parent 490e230b75
commit 15852ca054
1 changed files with 19 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c
+19 -17
View File
@@ -485,8 +485,14 @@ void ra_preambles_config(NR_PRACH_RESOURCES_t *prach_resources, NR_UE_MAC_INST_t
long deltaPreamble_Msg3 = 0;
uint8_t noGroupB = 0;
// Random seed generation
long long tmp = rdtsc_oai();
unsigned short int *seed = (unsigned short int*)&tmp;
unsigned int seed;
if (IS_SOFTMODEM_IQPLAYER || IS_SOFTMODEM_IQRECORDER) {
// Overwrite seed with non-random seed for IQ player/recorder
seed = 1;
} else {
seed=(unsigned int) (rdtsc_oai() && ~0);
}
RA_config_t *ra = &mac->ra;
NR_RACH_ConfigCommon_t *setup;
@@ -500,11 +506,6 @@ void ra_preambles_config(NR_PRACH_RESOURCES_t *prach_resources, NR_UE_MAC_INST_t
LOG_D(MAC, "In %s: deltaPreamble_Msg3 set to %ld\n", __FUNCTION__, deltaPreamble_Msg3);
}
if (IS_SOFTMODEM_IQPLAYER || IS_SOFTMODEM_IQRECORDER) {
// Overwrite seed with non-random seed for IQ player/recorder
tmp = 1;
}
if (!setup->groupBconfigured) {
noGroupB = 1;
LOG_D(MAC, "In %s:%d: preambles group B is not configured...\n", __FUNCTION__, __LINE__);
@@ -591,28 +592,28 @@ void ra_preambles_config(NR_PRACH_RESOURCES_t *prach_resources, NR_UE_MAC_INST_t
if(ra->ra_PreambleIndex < 0 || ra->ra_PreambleIndex > 63) {
if (noGroupB) {
// use Group A preamble
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r((unsigned int *)seed) % ra->cb_preambles_per_ssb);
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r(&seed) % ra->cb_preambles_per_ssb);
ra->RA_usedGroupA = 1;
} else if ((ra->Msg3_size < messageSizeGroupA) && (dl_pathloss > PLThreshold)) {
// Group B is configured and RA preamble Group A is used
// - todo add condition on CCCH_sdu_size for initiation by CCCH
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r((unsigned int *)seed) % sizeOfRA_PreamblesGroupA);
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r(&seed) % sizeOfRA_PreamblesGroupA);
ra->RA_usedGroupA = 1;
} else {
// Group B preamble is configured and used
// the first sizeOfRA_PreamblesGroupA RA preambles belong to RA Preambles Group A
// the remaining belong to RA Preambles Group B
ra->ra_PreambleIndex = ra->starting_preamble_nb + sizeOfRA_PreamblesGroupA + (rand_r((unsigned int *)seed) % (ra->cb_preambles_per_ssb - sizeOfRA_PreamblesGroupA));
ra->ra_PreambleIndex = ra->starting_preamble_nb + sizeOfRA_PreamblesGroupA + (rand_r(&seed) % (ra->cb_preambles_per_ssb - sizeOfRA_PreamblesGroupA));
ra->RA_usedGroupA = 0;
}
}
} else { // Msg3 is being retransmitted
if (ra->RA_usedGroupA && noGroupB) {
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r((unsigned int *)seed) % ra->cb_preambles_per_ssb);
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r(&seed) % ra->cb_preambles_per_ssb);
} else if (ra->RA_usedGroupA && !noGroupB){
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r((unsigned int *)seed) % sizeOfRA_PreamblesGroupA);
ra->ra_PreambleIndex = ra->starting_preamble_nb + (rand_r(&seed) % sizeOfRA_PreamblesGroupA);
} else {
ra->ra_PreambleIndex = ra->starting_preamble_nb + sizeOfRA_PreamblesGroupA + (rand_r((unsigned int *)seed) % (ra->cb_preambles_per_ssb - sizeOfRA_PreamblesGroupA));
ra->ra_PreambleIndex = ra->starting_preamble_nb + sizeOfRA_PreamblesGroupA + (rand_r(&seed) % (ra->cb_preambles_per_ssb - sizeOfRA_PreamblesGroupA));
}
}
}
@@ -1052,12 +1053,13 @@ void nr_ra_failed(uint8_t mod_id, uint8_t CC_id, NR_PRACH_RESOURCES_t *prach_res
NR_UE_MAC_INST_t *mac = get_mac_inst(mod_id);
RA_config_t *ra = &mac->ra;
// Random seed generation
long long tmp = rdtsc_oai();
unsigned short int *seed = (unsigned short int*)&tmp;
unsigned int seed;
if (IS_SOFTMODEM_IQPLAYER || IS_SOFTMODEM_IQRECORDER) {
// Overwrite seed with non-random seed for IQ player/recorder
tmp = 1;
seed = 1;
} else {
seed=(unsigned int) (rdtsc_oai() && ~0);
}
ra->first_Msg3 = 1;
@@ -1071,7 +1073,7 @@ void nr_ra_failed(uint8_t mod_id, uint8_t CC_id, NR_PRACH_RESOURCES_t *prach_res
LOG_D(MAC, "In %s: [UE %d][%d.%d] Maximum number of RACH attempts (%d) reached, selecting backoff time...\n",
__FUNCTION__, mod_id, frame, slot, ra->preambleTransMax);
ra->RA_backoff_cnt = rand_r((unsigned int *)seed) % (prach_resources->RA_PREAMBLE_BACKOFF + 1);
ra->RA_backoff_cnt = rand_r(&seed) % (prach_resources->RA_PREAMBLE_BACKOFF + 1);
prach_resources->RA_PREAMBLE_TRANSMISSION_COUNTER = 1;
prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP += 2; // 2 dB increment
prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER = nr_get_Po_NOMINAL_PUSCH(prach_resources, mod_id, CC_id);