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

PRACH duration to be calculated based on PRACH format.

Browse Source 
PRACH_PDU.prach_format now interpreted according to last version (March 2020) of 5G FAPI specs
fixing nr_prachsim
This commit is contained in:
Florian Kaltenberger
2020-09-21 22:17:28 +02:00
parent 5bb1893f3d
commit 221973bffc
9 changed files with 234 additions and 174 deletions
Download Patch File Download Diff File Expand all files Collapse all files
executables/nr-ru.c
+4 -4
View File
@@ -1584,10 +1584,10 @@ void *ru_thread( void *param ) {
// Do PRACH RU processing
int prach_id=find_nr_prach_ru(ru,proc->frame_rx,proc->tti_rx,SEARCH_EXIST);
int prachStartSymbol;
uint16_t format,RA_sfn_index;
uint8_t start_symbol,N_t_slot,N_dur,N_RA_slot,config_period;
uint8_t prachStartSymbol,N_dur;
if (prach_id>=0) {
N_dur = get_nr_prach_duration(ru->prach_list[prach_id].fmt);
/*
get_nr_prach_info_from_index(ru->config.prach_config.prach_ConfigurationIndex.value,
proc->frame_rx,proc->tti_rx,
ru->config.carrier_config.dl_frequency.value,
@@ -1600,7 +1600,7 @@ void *ru_thread( void *param ) {
&RA_sfn_index,
&N_RA_slot,
&config_period);
*/
for (int prach_oc = 0; prach_oc<ru->prach_list[prach_id].num_prach_ocas; prach_oc++) {
prachStartSymbol = ru->prach_list[prach_id].prachStartSymbol+prach_oc*N_dur;
//comment FK: the standard 38.211 section 5.3.2 has one extra term +14*N_RA_slot. This is because there prachStartSymbol is given wrt to start of the 15kHz slot or 60kHz slot. Here we work slot based, so this function is anyway only called in slots where there is PRACH. Its up to the MAC to schedule another PRACH PDU in the case there are there N_RA_slot \in {0,1}.