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Increase default max LDPC iter to 8

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Doing only 5 LDPC iterations by default leads to a poor reception
performance, and correspondingly many retransmissions. Increase to 8 as
the new default to improve user experience.
This commit is contained in:
Robert Schmidt
2024-02-26 12:48:57 +01:00
parent c99db698ce
commit 29ca077b66
6 changed files with 2 additions and 6 deletions
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2
executables/nr-uesoftmodem.h
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@@ -36,7 +36,7 @@
{"single-thread-disable", CONFIG_HLP_NOSNGLT, PARAMFLAG_BOOL, .iptr=&single_thread_flag, .defintval=1, TYPE_INT, 0}, \
{"dlsch-parallel", CONFIG_HLP_DLSCH_PARA, 0, .u8ptr=NULL, .defintval=0, TYPE_UINT8, 0}, \
{"offset-divisor", CONFIG_HLP_OFFSET_DIV, 0, .uptr=&nrUE_params.ofdm_offset_divisor, .defuintval=8, TYPE_UINT32, 0}, \
{"max-ldpc-iterations", CONFIG_HLP_MAX_LDPC_ITERATIONS, 0, .iptr=&nrUE_params.max_ldpc_iterations, .defuintval=5, TYPE_UINT8, 0}, \
{"max-ldpc-iterations", CONFIG_HLP_MAX_LDPC_ITERATIONS, 0, .iptr=&nrUE_params.max_ldpc_iterations, .defuintval=8, TYPE_UINT8, 0}, \
{"nr-dlsch-demod-shift", CONFIG_HLP_DLSHIFT, 0, .iptr=(int32_t *)&nr_dlsch_demod_shift, .defintval=0, TYPE_INT, 0}, \
{"V" , CONFIG_HLP_VCD, PARAMFLAG_BOOL, .iptr=&vcdflag, .defintval=0, TYPE_INT, 0}, \
{"uecap_file", CONFIG_HLP_UECAP_FILE, 0, .strptr=&uecap_file, .defstrval="./uecap_ports1.xml", TYPE_STRING, 0}, \

2
openair2/GNB_APP/L1_nr_paramdef.h
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@@ -81,7 +81,7 @@
{CONFIG_STRING_L1_PRACH_DTX_THRESHOLD, NULL, 0, .uptr=NULL, .defintval=150, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_PUSCH_DTX_THRESHOLD, NULL, 0, .uptr=NULL, .defintval=50, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_SRS_DTX_THRESHOLD, NULL, 0, .uptr=NULL, .defintval=50, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_MAX_LDPC_ITERATIONS, NULL, 0, .uptr=NULL, .defintval=5, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_MAX_LDPC_ITERATIONS, NULL, 0, .uptr=NULL, .defintval=8, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_RX_THREAD_CORE, NULL, 0, .uptr=NULL, .defintval=-1, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_TX_THREAD_CORE, NULL, 0, .uptr=NULL, .defintval=-1, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_TX_AMP_BACKOFF_dB, HLP_L1TX_BO,0, .uptr=NULL, .defintval=36, TYPE_UINT, 0}, \

1
targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf
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@@ -191,7 +191,6 @@ L1s = (
{
num_cc = 1;
tr_n_preference = "local_mac";
max_ldpc_iterations = 5;
ofdm_offset_divisor = 8; #set this to UINT_MAX for offset 0
}
);

1
targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band77.273prb.fhi72.4x4-vvdn.conf
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@@ -213,7 +213,6 @@ L1s = (
prach_dtx_threshold = 130
pucch0_dtx_threshold = 80;
pusch_dtx_threshold = -100;
max_ldpc_iterations = 10;
#thread_pool_size = 8;
tx_amp_backoff_dB = 3;
L1_rx_thread_core = 8;

1
targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.273prb.fhi72.4x2-benetel650.conf
View File

@@ -211,7 +211,6 @@ L1s = (
prach_dtx_threshold = 100;
pucch0_dtx_threshold = 80;
pusch_dtx_threshold = 10;
max_ldpc_iterations = 10;
tx_amp_backoff_dB = 20; # needs to match O-RU configuration
L1_rx_thread_core = 8;
L1_tx_thread_core = 10;

1
targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.273prb.fhi72.4x4-liteon.conf
View File

@@ -212,7 +212,6 @@ L1s = (
prach_dtx_threshold = 130
pucch0_dtx_threshold = 80;
pusch_dtx_threshold = 10;
max_ldpc_iterations = 10;
tx_amp_backoff_dB = 20; # needs to match O-RU configuration
L1_rx_thread_core = 8;
L1_tx_thread_core = 10;