[srslte-users] New install, how to change LTE bandwidth?

[J Giovatto]

Hi

As requested I changed nof_ctrl_symbols from 3 -> 4 and a crash

14:30:36.925718 [S1AP] [I] Received S1SetupResponse
14:30:37.004271 [PHY0] [E] [10236] Invalid CFI=4


    ./emu_srsenb() [0x4f14a7]
        /lib64/libc.so.6(+0x346e0) [0x7fafa16016e0]
       
./emu_srsenb(_ZN6srsenb5sched12generate_dciEP21srslte_dci_location_tPNS_8sched_ue15sched_dci_cce_tEjPS3_+0x4c)
[0x4b56bc]
       
./emu_srsenb(_ZN6srsenb5sched11dl_sched_bcEPNS_15sched_interface13dl_sched_bc_tE+0x2b1)
[0x4b68d1]
       
./emu_srsenb(_ZN6srsenb5sched8dl_schedEjPNS_15sched_interface14dl_sched_res_tE+0xb3)
[0x4b6ea3]
        ./emu_srsenb() [0x4b39ec]
        ./emu_srsenb(_ZN6srsenb11phch_worker8work_impEv+0x140) [0x4c2840]
        ./emu_srsenb(_ZN6srslte11thread_pool6worker10run_threadEv+0x31)
[0x4ce021]
        ./emu_srsenb(_ZN6thread21thread_function_entryEPv+0x9) [0x49e689]
        /lib64/libpthread.so.0(+0x750b) [0x7fafa35e650b]
        /lib64/libc.so.6(clone+0x3f) [0x7fafa16c216f]

Joe


On 03/21/2018 10:02 AM, Andre Puschmann wrote:
> Hi,
>
> Can you check the number of control symbols used in the eNB, i.e. the
> param nof_ctrl_symbols in enb.conf?
>
> Can you try with 3 or 4 symbols?
>
> Thanks
> Andre
>
>
> On 21/03/18 14:57, J Giovatto wrote:
>> Hi
>> I had similar issue w n_prb=6.
>>
>> Did you happen to see this warning in the enb logs ?
>>
>>  TX SRB0 PDU size larger than MAC opportunity
>>
>> If so you can try n_prb=15.
>>
>> Joe
>>
>>
>> On 03/21/2018 09:46 AM, Patrick Cutno wrote:
>>> I have been using srsLTE 1.0 (before srsENB) was introduced and just
>>> made the switch to the current version. I looked through posts from
>>> the last few months but I couldn’t find clear instructions on what
>>> parameters to change in the configs to use different LTE bandwidths. I
>>> am trying to use 1.4 MHz.
>>>
>>>  
>>>
>>> In the eNb config I changed the “n_prb” to 6 but what do I do on the
>>> UE side? As is, the UE picks up the prb=6 and displays it in the trace
>>> but I immediately get a radio link failure. FYI, the default configs
>>> “out-of-the-box” work fine. So I can eliminate hardware as an issue.
>>>
>>>  
>>>
>>> What am I missing?
>>>
>>>
>>>
>>> _______________________________________________
>>> srslte-users mailing list
>>> srslte-users at lists.softwareradiosystems.com
>>> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>>
>>
>>
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>>
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