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

Thu Apr 16 20:46:30 UTC 2020

Andre,
Thanks for the reply. I migrated to two laptops and I am still unable to
get a connection when using more than 15 resource blocks. the logs look the
same as they do on the up board regardless of what laptop I use. Do you
have a general idea regarding processing power/speed with regard to the
number of resource blocks used?

The Up^2 board is now stable and works as both UE and ENB with 15 resource
blocks

I also was able to compile SRSLTE and its dependencies on a pi,
unfortunately The Pi will not connect as UE or ENB. I get the same issue
with it failing RRC setup. RA response not received within the window. Is
there a way to extend the window?

As a side note, I have also found that when using Lime-minis and Lime USB's
the UE signal is really sensitive to the gain settings. It seems pretty
stable around a value of 50.

Thanks
Mark

On Thu, Apr 9, 2020 at 12:02 PM Andre Puschmann <
andre.puschmann at softwareradiosystems.com> wrote:

> 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
> >
>
>
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