[srslte-users] Up-Board/Pi-4 and LimeSDR/Lime-Mini Expired RRCconectionSetup

Thu Apr 9 19:02:31 UTC 2020

We've never used the up board but I guess is that it's too weak to
support more bandwidth and that you're running into RF issues therefore.

On 9/4/20 20:34, mark h wrote:
> Dear srsLTE-Users Liist,
> I am now able to establish a connection using a Up^2 board with the
> configuration described in my previous email (see below), but what I
> have found is that I am limited to 15prb. If I attempt higher bandwidths
> (prb 25 or grater) I get the same failure. Thanks in advance for any
> advice. I hope you all are doing well.
> 
> Dear srsLTE team,
> I am currently attempting to utilize a Up^2 board or Pi-4 and laptop to
> establish a link. UE and ENB begin the setup sequence, then fail and
> disconnect. I am unsure what I can do on my end to establish a link. I have
> gotten the setup to regularly fail at the same point and now I am stuck.
> Any advice or suggestions would be greatly appreciated.
> 
> Mark
> 
> Setup
> Up^2 board with LimeSDR USB running srsENB
> (also have a similar setup on a Pi-4 with srsLTE 18.12 It compiled much
> easier and cleaner but I get similar failures.)
> 
> Laptop intel-i7 2.5GHz with LimeSDR USB running srsUE.
> 
> Both systems build running:
> Ubuntu 18.04.4
> srsLTE Master Branch (compiled from source)
> Limesuite Master Branch (compiled from source)
> SoapySDR 0.7.1 (compiled from source)
> 
> Connections:
> Hard line with attenuators.
> or
> RF with antennas
> 
> Other Notes:
> CPU set to performance
> gateware on Lime Mini v1.24 (I had fewer errors by rolling back the
> gateware version)
> Firmware and Gateware on LimeSDR USB is current.
> LimeSDR's are connected through a USB3.0 Hub with independent power. (i
> reduced a bunch of tuning errors and the signal looked cleaner when I did
> this)
> 
> Config settings:
> Unmodified except EARFCN=6200
> ENB TXGain=80
> Nprb=25
> UE TXGain= 60
> 
> Raw IQ: I can provide waterfall and FFT screen shots if desired.
> ENB Looks pretty clean and like what I have seen in commercial systems.
> UE: does not look as clean and I see aliasing and spikes depending on tx
> gain setting. (not sure if this is normal in the setup process.)
> 
> 
> 
> 
> ENB execution:
> Built in Release mode using commit d045213f on branch master.
> 
> ---  Software Radio Systems LTE eNodeB  ---
> 
> Reading configuration file /home/mark/.config/srslte/enb.conf...
> Opening 1 RF devices with 1 RF channels...
> Soapy has found device #0: addr=1d50:6108, driver=lime, label=LimeSDR-USB
> [USB 3.0] 9081C05C32A18, media=USB 3.0, module=FX3, name=LimeSDR-USB,
> serial=0009081C05C32A18,
> [INFO] Make connection: 'LimeSDR-USB [USB 3.0] 9081C05C32A18'
> [INFO] Reference clock 30.72 MHz
> [INFO] Device name: LimeSDR-USB
> [INFO] Reference: 30.72 MHz
> [INFO] LMS7002M register cache: Disabled
> Setting up Rx stream with 1 channel(s)
> Setting up Tx stream with 1 channel(s)
> [INFO] RX LPF configured
> [INFO] RX LPF configured
> Set Rx bandwidth to 2.50 MHz
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.00 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> Available device sensors:
>  - clock_locked
>  - lms7_temp
> Available sensors for Rx channel 0:
>  - lo_locked
> [INFO] Tx calibration finished
> [INFO] Rx calibration finished
> State of gain elements for Rx channel 0 (AGC not supported):
>  - TIA: 9.00 dB
>  - LNA: 30.00 dB
>  - PGA: -4.00 dB
> State of gain elements for Tx channel 0 (AGC not supported):
>  - PAD: 45.00 dB
>  - IAMP: 0.00 dB
> Rx antenna set to LNAL
> Tx antenna set to BAND1
> 
> Warning burst preamble is not calibrated for device lime. Set a value
> manually
> 
> Setting frequency: DL=796.0 Mhz, UL=837.0 MHz
> Setting Sampling frequency 7.68 MHz
> 
> ==== eNodeB started ===
> Type <t> to view trace
> [INFO] RX LPF configured
> Set Rx bandwidth to 5.76 MHz
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5.76
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.76 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> 
> Warning TX/RX time offset for sampling rate 7680000 KHz not calibrated.
> Using interpolated value
> 
> [INFO] Tx calibration finished
> [INFO] Rx calibration finished
> RACH:  tti=7011, preamble=11, offset=22, temp_crnti=0x46
> RACH:  tti=7031, preamble=45, offset=22, temp_crnti=0x47
> RACH:  tti=7071, preamble=11, offset=22, temp_crnti=0x48
> RACH:  tti=7091, preamble=20, offset=22, temp_crnti=0x49
> Disconnecting rnti=0x46.
> RACH:  tti=7111, preamble=40, offset=22, temp_crnti=0x4a
> Disconnecting rnti=0x47.
> Disconnecting rnti=0x48.
> Disconnecting rnti=0x49.
> Disconnecting rnti=0x4a.
> ^CStopping srsENB... Press Ctrl+C 9 more times to force stop
> ---  exiting  ---
> 
> ENB log:
> Built in Release mode using commit d045213f on branch master.
> 10:12:02.621832 [MAC ] [W] [ 7053] SCHED: discarding TB 0 pid=5, tti=7053,
> maximum number of retx exceeded (4)
> 10:12:02.642088 [MAC ] [W] [ 7073] SCHED: discarding TB 0 pid=1, tti=7073,
> maximum number of retx exceeded (4)
> 10:12:02.674212 [RRC ] [W] User rnti=0x46 expired RRCConnectionSetup
> deadline: 0:87348>0:80000 us
> 10:12:02.681989 [MAC ] [W] [ 7113] SCHED: discarding TB 0 pid=1, tti=7113,
> maximum number of retx exceeded (4)
> 10:12:02.694273 [RRC ] [W] User rnti=0x47 expired RRCConnectionSetup
> deadline: 0:87066>0:80000 us
> 10:12:02.703156 [MAC ] [W] [ 7134] SCHED: discarding TB 0 pid=6, tti=7134,
> maximum number of retx exceeded (4)
> 10:12:02.715977 [MAC ] [W] [ 7147] SCHED: discarding TB 0 pid=3, tti=7147,
> maximum number of retx exceeded (4)
> 10:12:02.734048 [RRC ] [W] User rnti=0x48 expired RRCConnectionSetup
> deadline: 0:86884>0:80000 us
> 10:12:02.754106 [RRC ] [W] User rnti=0x49 expired RRCConnectionSetup
> deadline: 0:85573>0:80000 us
> 10:12:02.764134 [RRC ] [W] User rnti=0x4a expired RRCConnectionSetup
> deadline: 0:83250>0:80000 us
> Closing log
> 
> UE execution:
> Reading configuration file /home/mark/.config/srslte/ue.conf...
> 
> Built in Release mode using commit d045213f on branch master.
> 
> Opening 1 RF devices with 1 RF channels...
> Soapy has found device #0: addr=1d50:6108, driver=lime, label=LimeSDR-USB
> [USB 3.0] 9081C05C40812, media=USB 3.0, module=FX3, name=LimeSDR-USB,
> serial=0009081C05C40812,
> [INFO] Make connection: 'LimeSDR-USB [USB 3.0] 9081C05C40812'
> [INFO] Reference clock 30.72 MHz
> [INFO] Device name: LimeSDR-USB
> [INFO] Reference: 30.72 MHz
> [INFO] LMS7002M register cache: Disabled
> Setting up Rx stream with 1 channel(s)
> Setting up Tx stream with 1 channel(s)
> [INFO] RX LPF configured
> [INFO] RX LPF configured
> Set Rx bandwidth to 2.50 MHz
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.00 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> Available device sensors:
>  - clock_locked
>  - lms7_temp
> Available sensors for Rx channel 0:
>  - lo_locked
> [INFO] Tx calibration finished
> [INFO] Rx calibration finished
> State of gain elements for Rx channel 0 (AGC not supported):
>  - TIA: 9.00 dB
>  - LNA: 30.00 dB
>  - PGA: -4.00 dB
> State of gain elements for Tx channel 0 (AGC not supported):
>  - PAD: 45.00 dB
>  - IAMP: 0.00 dB
> Rx antenna set to LNAL
> Tx antenna set to BAND1
> 
> Warning burst preamble is not calibrated for device lime. Set a value
> manually
> 
> Waiting PHY to initialize ... done!
> Attaching UE...
> Searching cell in DL EARFCN=6200, f_dl=796.0 MHz, f_ul=837.0 MHz
> Set Rx bandwidth to 2.50 MHz
> [INFO] Rx calibration finished
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.00 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> [INFO] Tx calibration finished
> .
> Found Cell:  Mode=FDD, PCI=1, PRB=25, Ports=1, CFO=-0.2 KHz
> [INFO] RX LPF configured
> Set Rx bandwidth to 5.76 MHz
> [INFO] Rx calibration finished
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5.76
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.76 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> [INFO] Tx calibration finished
> 
> Warning TX/RX time offset for sampling rate 7680000 KHz not calibrated.
> Using interpolated value
> 
> Found PLMN:  Id=00101, TAC=7
> Random Access Transmission: seq=24, ra-rnti=0x2
> LRandom Access Transmission: seq=41, ra-rnti=0x2
> LRandom Access Transmission: seq=9, ra-rnti=0x2
> LRandom Access Transmission: seq=9, ra-rnti=0x2
> LRandom Access Transmission: seq=10, ra-rnti=0x2
> LRandom Access Transmission: seq=44, ra-rnti=0x2
> LRandom Access Transmission: seq=4, ra-rnti=0x2
> LRandom Access Transmission: seq=10, ra-rnti=0x2
> LRandom Access Transmission: seq=19, ra-rnti=0x2
> LRandom Access Transmission: seq=39, ra-rnti=0x2
> Warning: Detected Radio-Link Failure
> RF status: O=0, U=0, L=11
> LRF status: O=0, U=0, L=1
> [WARNING] Rx LPF min bandwidth is 4MHz when TIA gain is set to -12 dB
> [INFO] RX LPF configured
> Set Rx bandwidth to 2.50 MHz
> [INFO] Rx calibration finished
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.00 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> [INFO] Tx calibration finished
> .RF status: O=0, U=2, L=0
> 
> Found Cell:  Mode=FDD, PCI=1, PRB=25, Ports=1, CFO=-0.2 KHz
> [INFO] RX LPF configured
> Set Rx bandwidth to 5.76 MHz
> [INFO] Rx calibration finished
> [INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5.76
> MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
> [INFO] TX LPF configured
> Set Tx bandwidth to 5.76 MHz
> [INFO] Filter calibrated. Filter order-2nd, set to 50 MHz
> [INFO] TX LPF configured
> Set Tx bandwidth to 50.00 MHz
> [INFO] Tx calibration finished
> 
> Warning TX/RX time offset for sampling rate 7680000 KHz not calibrated.
> Using interpolated value
> 
> RF status: O=0, U=1, L=0
> RF status: O=0, U=3, L=1
> RF status: O=0, U=2, L=0
> RF status: O=0, U=3, L=0
> RF status: O=0, U=2, L=0
> RF status: O=0, U=3, L=0
> ^CStopping srsUE... Press Ctrl+C 9 more times to force stop
> ---  exiting  ---
> 
> UE Log:
> 
> 10:11:56.856483 [UE  ] [I] Built in Release mode using commit d045213f on
> branch master.
> 10:12:02.515569 [MAC ] [E] [ 6944] RA response not received within the
> response window
> 10:12:02.518822 [MAC ] [E] [ 6964] RA response not received within the
> response window
> 10:12:02.522028 [MAC ] [E] [ 6984] RA response not received within the
> response window
> 10:12:02.540002 [MAC ] [E] [ 7004] RA response not received within the
> response window
> 10:12:02.559511 [MAC ] [E] [ 7024] RA response not received within the
> response window
> 10:12:02.579863 [MAC ] [E] [ 7044] RA response not received within the
> response window
> 10:12:02.600082 [MAC ] [E] [ 7064] RA response not received within the
> response window
> 10:12:02.619554 [MAC ] [E] [ 7084] RA response not received within the
> response window
> 10:12:02.639927 [MAC ] [E] [ 7104] RA response not received within the
> response window
> 10:12:02.659919 [MAC ] [E] [ 7124] RA response not received within the
> response window
> 10:12:02.659935 [MAC ] [E] [ 7124] RA:    Rx:     Maximum number of
> transmissions reached (10)
> 10:12:02.659945 [RRC ] [W] Detected Radio-Link Failure
> 10:12:04.428066 [RRC ] [W] Proc "Connection Request" - Timer T300 expired:
> ConnectionRequest timed out
> 10:12:04.433051 [RRC ] [W] Could not establish connection. Deallocating
> dedicatedInfoNAS PDU
> 10:12:04.433082 [NAS ] [E] Proc "RRC Connect" - Could not establish RRC
> connection
> Closing log
> 
> 
> _______________________________________________
> srslte-users mailing list
> srslte-users at lists.softwareradiosystems.com
> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
> 