Skip to content

lte-softmodem start fail: ERROR_CODE_OVERFLOW (overflow)

Dear devs: Please correct me if this is the wrong place to ask this. The oai eNB cannot start due to the error messages below. I believe that this should be directed to particular parameter settings in the config file. Expecting any expert to advice how to trace/debug/solve such kind of troubles. Thanks.

Hardware: USPR B210 connected on USB2, all UHD tests passed.

OS: Ubuntu 14.04.1 Kernel 3.19

--Quoted error messages from the oai log--

....

[WARNING] [MULTI_USRP] The total sum of rates (15.360000 MSps on 1 channels) exceeds the maximum capacity of the connection.

This can cause overflows (O).

[WARNING] [MULTI_USRP] The total sum of rates (15.360000 MSps on 1 channels) exceeds the maximum capacity of the connection.

This can cause underruns (U).

....

Entering ITTI signals handler

got sync (eNB_thread_single)

got sync (eNB_thread_synch)

[PHY][I]Time in secs now: 97871832

[PHY][I]Time in secs last pps: 87883022

LLLLLLLLO[PHY][E][recv] received 13824 samples out of 15360

[PHY][E]Time: 6.4274 s

ERROR_CODE_OVERFLOW (Overflow)

[PHY][E]rx_rf: Asked for 15360 samples, got 13824 from USRP

[PHY][I]rx_rf: rfdevice timing drift of 16647 samples (ts_off 98646843)

/home/covmo/openairinterface5g/targets/RT/USER/lte-softmodem.c exit_fun() Exiting OAI softmodem: problem receiving samples

LLLLLLLLLLLLL[UDP][W]Received TERMINATE_MESSAGE**

closing all tasks

ready_tasks 0

waiting for XFORMS thread

stopping MODEM threads

Killing eNB 0 processing threads

Exiting eNB thread PRACH

---- Server Side log -----

[07/12 12:53:47.263] eNB-S1 accepted[192.168.100.118]:36412 in s1_path module

[07/12 12:53:47.263] eNB-S1 accepted[192.168.100.118] in master_sm module

[07/12 12:53:59.975] eNB-S1[e00] connection refused!!!

Attaching the conf that causing the error.

band3.conf

Edited by Ghost User