antsdr ：Problem with SRSRAN4g and the timestamp solution

[Avalong-lee]

board： antsdr
The code is already up to date
https://github.com/srsran/zynq_timestamping

sudo LD_LIBRARY_PATH=./bin_app ./bin_app/srsenb/srsenb ./bin_app/srsenb/enb.conf
--- Software Radio Systems LTE eNodeB ---

Reading configuration file ./bin_app/srsenb/enb.conf...
Couldn't open sib.conf, trying /root/.config/srsran/sib.conf
Couldn't open rr.conf, trying /root/.config/srsran/rr.conf
Couldn't open rb.conf, trying /root/.config/srsran/rb.conf

Built in Release mode using commit eea87b1 on branch HEAD.

ERROR: Invalid PRACH configuration - prach=(4, 10) does not fit into the eNB PRBs=(0, 6).
Consider changing the "prach_freq_offset" value to 0 in the sib.conf file when using 6 PRBs.
Opening 1 channels in RF device=iio with args=n_prb=6,context=ip:10.2.1.108,ul_bandwidth = 1.4e6,dl_bandwidth = 1.4e6
Active RF plugins: libsrsran_rf_iio.so
Inactive RF plugins:
Supported RF device list: iio
CH0 n_prb=6
CH0 context=ip:10.2.1.108
WARNING: Unknown parameter '0' in
WARNING: Unknown parameter '25' in
WARNING: Unknown parameter 'v0.25' in
failed to create the rf_port with A_BALENCED
failed to create the rf_port with A

==== eNodeB started ===
Type to view trace
Setting frequency: DL=2680.0 Mhz, UL=2560.0 MHz for cc_idx=0 nof_prb=6
Error reading rx ringbuffer. Invalid header
Error reading rx ringbuffer. Invalid header

[Avalong-lee]

If running as a UE, the following error occurs

sudo LD_LIBRARY_PATH=./bin_app nice -20 ./bin_app/srsue/srsue ./bin_app/srsue/ue.conf --log.all_level=DEBUG
[sudo] password for adv:
Reading configuration file ./bin_app/srsue/ue.conf...

Built in Release mode using commit eea87b1 on branch HEAD.

Opening 1 channels in RF device=iio with args=n_prb=6,context=ip:10.2.1.108,ul_bandwidth = 1.4e6,dl_bandwidth = 1.4e6
Active RF plugins: libsrsran_rf_iio.so
Inactive RF plugins:
Supported RF device list: iio
CH0 n_prb=6
CH0 context=ip:10.2.1.108
WARNING: Unknown parameter '0' in
WARNING: Unknown parameter '25' in
WARNING: Unknown parameter 'v0.25' in
failed to create the rf_port with A_BALENCED
failed to create the rf_port with A
Waiting PHY to initialize ... done!
Attaching UE...
Setting manual TX/RX offset to 0 samples
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Found Cell: Mode=FDD, PCI=1, PRB=75, Ports=2, CP=Normal, CFO=-5.2 KHz
ERROR: READ LINE: -9
ERROR: READ INTEGER: -9
Setting manual TX/RX offset to 0 samples

================================================================

In enb.conf, PRB is configured as 6, but on the UE side it is recognized as a different value. After each execution, the value keeps changing, for example 15, 50, etc.

[Avalong-lee]

ANTSDR E310 board
BOOT.bin use https://github.com/srsran/zynq_timestamping/releases

[Avalong-lee]

Found Cell: Mode=TDD, PCI=1, PRB=25, Ports=4, CP=Normal, CFO=-5.3 KHz
Enabling subframe interpolation for TDD cells (recommended setting)
Enabling subframe interpolation for TDD cells (recommended setting)
Enabling subframe interpolation for TDD cells (recommended setting)
ERROR: READ LINE: -9
ERROR: READ INTEGER: -9
Setting manual TX/RX offset to 0 samples
ERROR: READ LINE: -9
ERROR: READ INTEGER: -9
Setting manual TX/RX offset to 0 samples
.
/workspace/code/sdr/zynq_timestamping/sw/lib/src/phy/utils/ringbuffer.c:137: Buffer overrun: lost 5496 bytes
/workspace/code/sdr/zynq_timestamping/sw/lib/src/phy/rf/rf_iio_imp.c:864: Error writing to buffer in rx thread, ret is 2184 but should be 7680

/workspace/code/sdr/zynq_timestamping/sw/lib/src/phy/utils/ringbuffer.c:137: Buffer overrun: lost 24 bytes
/workspace/code/sdr/zynq_timestamping/sw/lib/src/phy/utils/ringbuffer.c:137: Buffer overrun: lost 7680 bytes
/workspace/code/sdr/zynq_timestamping/sw/lib/src/phy/rf/rf_iio_imp.c:864: Error writing to buffer in rx thread, ret is 0 but should be 7680

[Avalong-lee]

====》After changing dl_earfcn to 1575, no errors were reported, but the attachment failed. What could be the issue?

---

sudo LD_LIBRARY_PATH=./bin_app nice -20 ./bin_app/srsue/srsue ./bin_app/srsue/ue.conf --log.all_level=DEBUG
Reading configuration file ./bin_app/srsue/ue.conf...

Built in Release mode using commit eea87b1 on branch HEAD.

Opening 1 channels in RF device=iio with args=n_prb=6,context=ip:10.2.1.108,timestamp_every=1920,loopback=0
Active RF plugins: libsrsran_rf_iio.so
Inactive RF plugins:
Supported RF device list: iio
CH0 n_prb=6
CH0 context=ip:10.2.1.108
WARNING: Unknown parameter '0' in
WARNING: Unknown parameter '25' in
WARNING: Unknown parameter 'v0.25' in
failed to create the rf_port with A_BALENCED
failed to create the rf_port with A
Waiting PHY to initialize ... done!
Attaching UE...
Setting manual TX/RX offset to 0 samples
.
Found Cell: Mode=FDD, PCI=1, PRB=6, Ports=1, CP=Normal, CFO=7.2 KHz
Setting manual TX/RX offset to 0 samples
Setting manual TX/RX offset to 0 samples
.
Found Cell: Mode=FDD, PCI=1, PRB=6, Ports=1, CP=Normal, CFO=7.2 KHz
Setting manual TX/RX offset to 0 samples
Found PLMN: Id=00101, TAC=7
Random Access Transmission: seq=15, tti=181, ra-rnti=0x2
Random Access Transmission: seq=13, tti=201, ra-rnti=0x2
Random Access Transmission: seq=46, tti=221, ra-rnti=0x2
Random Access Transmission: seq=7, tti=241, ra-rnti=0x2
Random Access Transmission: seq=32, tti=261, ra-rnti=0x2
Random Access Transmission: seq=14, tti=281, ra-rnti=0x2
Random Access Transmission: seq=39, tti=301, ra-rnti=0x2
Random Access Transmission: seq=22, tti=321, ra-rnti=0x2
Random Access Transmission: seq=22, tti=341, ra-rnti=0x2
Random Access Transmission: seq=15, tti=361, ra-rnti=0x2
Attach failed (attempt 1/5)
Setting manual TX/RX offset to 0 samples
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Found Cell: Mode=FDD, PCI=1, PRB=6, Ports=1, CP=Normal, CFO=7.0 KHz
Setting manual TX/RX offset to 0 samples
Found PLMN: Id=00101, TAC=7