srsUE+srsRAN with bitrate less than 30Mbps #297
Replies: 2 comments 5 replies
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With 10Mhz bandwidth thats more or less what you can achieve with srsUE. You could try increasing the bandwidth to 40Mhz and set sampling rate to 46.08, which should give you higher throughput. |
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4 replies
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Thanks for your reply. I first edit gnb config as srate=46.08 and channel_bandwidth_MHz=40MHz, srsue config as srate=46.08e6. The gnb starts up normally but srsue failes to start with following output: Then I tried 20MHz+23.04. This time srsue starts up but gets stucked at attaching UE. The top 90 lines of ue.log is as follows. 2023-11-08T08:27:16.068514 [UE ] [I] Using binary srsue with arguments: ue_lab.cn.external-23.04e6.conf
2023-11-08T08:27:16.089786 [UE ] [I] Built in Release mode using commit fa56836b1 on branch master.
2023-11-08T08:27:16.118505 [RF ] [I] Configuring physical DL channel 0 with band-pass filter (0.0, 0.0)
2023-11-08T08:27:16.118506 [RF ] [I] Configuring physical UL channel 0 with band-pass filter (0.0, 0.0)
2023-11-08T08:27:17.838402 [STCK ] [E] Unknown PCAP option enable
2023-11-08T08:27:17.844482 [MAC ] [I] [ 0] Resetting MAC
2023-11-08T08:27:17.844491 [MAC ] [I] [ 0] Logical Channel Setup: LCID=0, LCG=0, priority=0, PBR=-1, BSD=50ms, bucket_size=0
2023-11-08T08:27:17.844496 [MAC ] [I] [ 0] Logical Channel Setup: LCID=1, LCG=0, priority=1, PBR=-1, BSD=50ms, bucket_size=0
2023-11-08T08:27:17.844505 [MAC ] [I] [ 0] Setting configuration
2023-11-08T08:27:17.844506 [MAC ] [I] [ 0] BSR: Configured timer reTX 2560 ms
2023-11-08T08:27:17.844534 [RLC ] [I] Added LTE radio bearer with LCID 0 in Transparent Mode
2023-11-08T08:27:17.844543 [USIM ] [I] Read Home PLMN Id=00101
2023-11-08T08:27:17.847448 [RLC-NR ] [I] Added LTE radio bearer with LCID 0 in Transparent Mode
2023-11-08T08:27:17.847455 [MAC-NR ] [I] [ 0] Logical Channel Setup: LCID=0, LCG=0, priority=0, PBR=0, BSD=0ms, bucket_size=0
2023-11-08T08:27:17.847462 [RRC ] [I] using srand seed of 847461
2023-11-08T08:27:17.873419 [STCK ] [I] Triggering NAS switch on
2023-11-08T08:27:17.873453 [NAS5G ] [I] Switching on
2023-11-08T08:27:17.942617 [USIM ] [I] Read Home PLMN Id=00101
2023-11-08T08:27:17.942618 [NAS5G ] [I] Requesting IMSI attach (IMSI=001010123456780)
2023-11-08T08:27:17.942622 [NAS5G ] [I] Sending Registration Request
2023-11-08T08:27:17.942623 [RRC-NR ] [I] Proc "Setup Request" - Initiation of Setup request procedure
2023-11-08T08:27:17.942623 [RRC-NR ] [I] Proc "Cell Selection" - Starting...
2023-11-08T08:27:17.942631 [PHY-SA ] [I] [ 0] Cell Search: Going to IDLE
2023-11-08T08:27:17.942632 [PHY-SA ] [I] [ 0] Tuning Rx channel 0 to 1842.50 MHz
2023-11-08T08:27:17.942635 [RF ] [I] Mapping RF channel 0 (device=0, channel=0) to logical carrier 0 on f_rx=1842.5 MHz
2023-11-08T08:27:18.116677 [PHY-SA ] [I] [ 0] Cell search: Setting SSB configuration srate=23.04 MHz; c-freq=1842.500 MHz; ss-freq=1842.050 MHz; scs=15kHz; pattern=A; duplex=fdd;
2023-11-08T08:27:18.117050 [PHY-SA ] [I] [ 0] Cell Search: Running Cell search state
2023-11-08T08:27:18.128543 [RRC-NR ] [I] Proc "Cell Selection" - Cell search found ARFCN=0 PCI=1 epre=-41.5 snr=+17.9 cfo=-8.5 delay=-0.0 sfn=55 ssb_idx=0 hrf=n scs=15 ssb_offset=6 dmrs_typeA_pos=pos2 coreset0=13 ss0=0 barred=n intra_freq_reselection=n spare=0
2023-11-08T08:27:18.128552 [PHY-SA ] [I] [ 0] Cell Select: Going to IDLE
2023-11-08T08:27:18.128609 [PHY-SA ] [I] [ 0] Tuning Rx channel 0 to 1842.50 MHz
2023-11-08T08:27:18.128610 [RF ] [I] Mapping RF channel 0 (device=0, channel=0) to logical carrier 0 on f_rx=1842.5 MHz
2023-11-08T08:27:18.128611 [RF ] [I] RF Rx channel 0 already on freq
2023-11-08T08:27:18.128611 [PHY-SA ] [I] [ 0] Tuning Tx channel 0 to 1747.50 MHz
2023-11-08T08:27:18.128612 [RF ] [I] Mapping RF channel 0 (device=0, channel=0) to logical carrier 0 on f_tx=1747.5 MHz
2023-11-08T08:27:18.129597 [RF ] [I] Overflow
2023-11-08T08:27:18.130183 [PHY-SA ] [I] [ 0] Setting new PHY configuration ARFCN=368500, PCI=1
2023-11-08T08:27:18.130184 [PHY-SA ] [I] [ 0] PRACH: cell.id=1, configIdx=0, rootSequence=0, zeroCorrelationConfig=0, freqOffset=0
2023-11-08T08:27:18.130264 [PHY-SA ] [I] [ 0] Finished setting new PRACH configuration.
2023-11-08T08:27:18.130265 [PHY-SA ] [I] [ 0] PHY: Set TA offset: n_ta_offset: 0, ta_usec: 0.0
2023-11-08T08:27:18.130308 [RRC-NR ] [I] PHY configuration with MIB parameters completed.
2023-11-08T08:27:18.153566 [PHY-SA ] [I] [ 0] SYNC: Setting SSB configuration srate=23.04 MHz; c-freq=1842.500 MHz; ss-freq=1842.050 MHz; scs=15kHz; pattern=A; duplex=fdd; period=10 ms; Tracking N_id=1.
2023-11-08T08:27:18.162932 [PHY-SA ] [I] [ 0] SYNC: SFN synchronised successfully (SFN=59). Transitioning to IDLE...
2023-11-08T08:27:18.162966 [PHY-SA ] [I] [ 591] Cell Select: SFN synchronized. CAMPING...
2023-11-08T08:27:18.162994 [RRC-NR ] [I] Proc "Cell Selection" - Cell selection completed. Starting SIB1 acquisition
2023-11-08T08:27:18.163398 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=0; RSRP=-inf dBfs; EPRE=-inf dBfs; Corr=0.000
2023-11-08T08:27:18.163399 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=0; Invalid measurement;
2023-11-08T08:27:18.163401 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=8; RSRP=-inf dBfs; EPRE=-inf dBfs; Corr=0.000
2023-11-08T08:27:18.163402 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=8; Invalid measurement;
2023-11-08T08:27:18.163411 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=16; RSRP=-inf dBfs; EPRE=-inf dBfs; Corr=0.000
2023-11-08T08:27:18.163411 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=16; Invalid measurement;
2023-11-08T08:27:18.163413 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=24; RSRP=-inf dBfs; EPRE=-inf dBfs; Corr=0.000
2023-11-08T08:27:18.163414 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=24; Invalid measurement;
2023-11-08T08:27:18.163415 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=0; RSRP=-inf dBfs; EPRE=-inf dBfs; Corr=0.000
2023-11-08T08:27:18.163416 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=0; Invalid measurement;
2023-11-08T08:27:18.163417 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=16; RSRP=-inf dBfs; EPRE=-inf dBfs; Corr=0.000
2023-11-08T08:27:18.163417 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=16; Invalid measurement;
2023-11-08T08:27:18.164367 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=0; RSRP=-47.8 dBfs; EPRE=-33.7 dBfs; Corr=0.039
2023-11-08T08:27:18.164369 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=0; Correlation is too low (0.0<0.5); EPRE=-33.69; RSRP=-47.78;
2023-11-08T08:27:18.164372 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=8; RSRP=-50.7 dBfs; EPRE=-34.5 dBfs; Corr=0.024
2023-11-08T08:27:18.164373 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=8; Correlation is too low (0.0<0.5); EPRE=-34.48; RSRP=-50.71;
2023-11-08T08:27:18.164376 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=16; RSRP=-47.4 dBfs; EPRE=-35.6 dBfs; Corr=0.067
2023-11-08T08:27:18.164377 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=16; Correlation is too low (0.1<0.5); EPRE=-35.65; RSRP=-47.42;
2023-11-08T08:27:18.164385 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=24; RSRP=-48.2 dBfs; EPRE=-35.4 dBfs; Corr=0.053
2023-11-08T08:27:18.164386 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=24; Correlation is too low (0.1<0.5); EPRE=-35.39; RSRP=-48.17;
2023-11-08T08:27:18.164389 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=0; RSRP=-50.9 dBfs; EPRE=-34.4 dBfs; Corr=0.023
2023-11-08T08:27:18.164390 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=0; Correlation is too low (0.0<0.5); EPRE=-34.43; RSRP=-50.90;
2023-11-08T08:27:18.164392 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=16; RSRP=-50.0 dBfs; EPRE=-34.3 dBfs; Corr=0.027
2023-11-08T08:27:18.164393 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=16; Correlation is too low (0.0<0.5); EPRE=-34.34; RSRP=-50.05;
2023-11-08T08:27:18.165336 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=0; RSRP=-46.9 dBfs; EPRE=-34.7 dBfs; Corr=0.060
2023-11-08T08:27:18.165339 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=0; Correlation is too low (0.1<0.5); EPRE=-34.70; RSRP=-46.95;
2023-11-08T08:27:18.165342 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=8; RSRP=-49.9 dBfs; EPRE=-34.3 dBfs; Corr=0.027
2023-11-08T08:27:18.165343 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=8; Correlation is too low (0.0<0.5); EPRE=-34.28; RSRP=-49.89;
2023-11-08T08:27:18.165345 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=16; RSRP=-47.7 dBfs; EPRE=-34.3 dBfs; Corr=0.046
2023-11-08T08:27:18.165347 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=16; Correlation is too low (0.0<0.5); EPRE=-34.32; RSRP=-47.74;
2023-11-08T08:27:18.165349 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=24; RSRP=-47.2 dBfs; EPRE=-32.8 dBfs; Corr=0.036
2023-11-08T08:27:18.165351 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=24; Correlation is too low (0.0<0.5); EPRE=-32.81; RSRP=-47.25;
2023-11-08T08:27:18.165359 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=0; RSRP=-48.1 dBfs; EPRE=-34.9 dBfs; Corr=0.047
2023-11-08T08:27:18.165360 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=0; Correlation is too low (0.0<0.5); EPRE=-34.85; RSRP=-48.09;
2023-11-08T08:27:18.165363 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=16; RSRP=-46.7 dBfs; EPRE=-33.4 dBfs; Corr=0.046
2023-11-08T08:27:18.165364 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=16; Correlation is too low (0.0<0.5); EPRE=-33.38; RSRP=-46.72;
2023-11-08T08:27:18.166399 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=0; RSRP=-47.8 dBfs; EPRE=-34.8 dBfs; Corr=0.050
2023-11-08T08:27:18.166400 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=0; Correlation is too low (0.1<0.5); EPRE=-34.80; RSRP=-47.81;
2023-11-08T08:27:18.166403 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=8; RSRP=-52.4 dBfs; EPRE=-34.6 dBfs; Corr=0.017
2023-11-08T08:27:18.166404 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=8; Correlation is too low (0.0<0.5); EPRE=-34.63; RSRP=-52.38;
2023-11-08T08:27:18.166406 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=16; RSRP=-50.7 dBfs; EPRE=-33.7 dBfs; Corr=0.020
2023-11-08T08:27:18.166408 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=16; Correlation is too low (0.0<0.5); EPRE=-33.70; RSRP=-50.65;
2023-11-08T08:27:18.166415 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=2; ncce=24; RSRP=-48.5 dBfs; EPRE=-33.8 dBfs; Corr=0.034
2023-11-08T08:27:18.166417 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=2;ncce=24; Correlation is too low (0.0<0.5); EPRE=-33.75; RSRP=-48.47;
2023-11-08T08:27:18.166420 [PHY_LIB] [I] [ 0] PDCCH DMRS Rx: Measure L=3; ncce=0; RSRP=-55.6 dBfs; EPRE=-34.2 dBfs; Corr=0.007
2023-11-08T08:27:18.166421 [PHY_LIB] [I] [ 0] Discarded PDCCH candidate L=3;ncce=0; Correlation is too low (0.0<0.5); EPRE=-34.21; RSRP=-55.59;
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Can you please post complete gNB and UE logs along with the configuration? Btw, you are missing the following configuration in your gNB configuration file |
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Thanks a lot for your timely reply. log-20mhz+23.04.zip I'll add prach parameter and try again. Thanks again! |
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I tried with prach parameter added to gnb config. But it makes no difference. Thanks again! |
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Hi @Zplusless, as outlined in the documentation, srsUE is limited to 10 MHz BW. The rates you achieve are about what you can expect with your set-up. |
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thanks |
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I set up a testbed with two USRP-B210s (with external GPSDO 10MHz clock) following the toturial srsRAN gNB with srsUE — srsRAN Project documentation. The
srsran_performancescript is executed on both server.The testbed works well after I connect the two USRP-B210s with SMA cable. However, the maximum bitrate measured by iperf is only around 30Mbps. Is this normal or how can I improve the performance?
My configs:
gnb_local_cn_external.yml.txt
ue_lab.cn.external.conf.txt
gnb server: Intel(R) Xeon(R) D-1747NTE CPU @ 2.50GHz, 10 cores 20 threads
ue server: Intel(R) Core(TM) i5-10500 CPU @ 3.10GHz, 6 cores 12 threads
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