[srslte-users] UE attached but without IP

[Eduardo Garro Crevillen]

Hello Pedro,

We have checked that the same apn configuration (apn = srsapn) is in  
both, the epc.conf and in Bittium. We don't know if we need to  
configure something else, e.g. apnuser/apnpass. Since these fields are  
not defined in epc.conf, we have left blank in our mobile. May be the  
problem caused because of a bad USIM <-> user_db.csv configuration? We  
have been reading previous question were an AMF = 8000 was  
recommended, but we are using 9001. In addition, another comment was  
that milenage algorithm is not supported for opc in previous srsLTE  
releases.

Kind regards, Eduardo.

PS: In case it helps, we have succusfully connected with a virtual  
srsUE (ue.conf), but Bittium is not able to connect.

Pedro Alvarez <pedro.alvarez at softwareradiosystems.com> escribió:

> Can you double check if the APN configuration matches in the EPC and the UE?
>
> On Thu, Feb 7, 2019 at 10:59 AM Eduardo Garro Crevillen
> <edgarcre at iteam.upv.es> wrote:
>>
>>
>> Hello everyone,
>>
>> We have just started trying to implement the srsLTE suite. We are  
>> using the srsepc, the srsenb which is connected to a USRP B210 and  
>> a sysmocom USIM inside a Bittium phone as UE. However, although it  
>> seems that the UE is correctly attached, it does not get any IP  
>> address. In the attachment you can find the .log and .pcap files.  
>> Taking a look to the epc.log it seems that there is an error in the  
>> NAS authentication protocol. We have thought that there was a  
>> problem with the USIM data. However, we have checked several times  
>> that the IMSI, OPC and K are correctly included within the  
>> ue_db.csv. This the included line:
>>
>> ue4,901700000000004,99728e5d250001ba5f322c82d002db86,opc,b8993ca66ce802c03a2c16d237e90cd1,9001,0000000012fa,7
>>
>> Maybe there is an error regarding the SQN or the QCI? Since we have  
>> not found any message on the mailing list archives talking about  
>> these problem, we kindly ask for your help.
>>
>> Kind regards, Eduardo
>>
>> -----------------------------------------
>>   Eduardo Garro Crevillén, R&D Engineer
>>   Universitat Politècnica de València
>>   iTEAM Research Institute
>>   Mobile Communications Group
>> -----------------------------------------
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>> srslte-users at lists.softwareradiosystems.com
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-----------------------------------------
   Eduardo Garro Crevillén, R&D Engineer
   Universitat Politècnica de València
   iTEAM Research Institute
   Mobile Communications Group
-----------------------------------------