[srslte-users] Changing srsLTE Configuration

[Ayman Maghrabi]

Sorry about this. For some reason I had a new line in my csv file, must've
been my mistake. It runs normal now and I see the QCI change.

The weird thing is I have yet to define QCI 1, but the UE managed to
connect and QCI of 1 was reported. eNB must be using QCI 7 as default if
the value doesn't exist in drb.config.

All is good for now.

Regards,
Ayman

On Mon, Apr 20, 2020 at 9:55 AM Ayman Maghrabi <ayman.maghrabi at gmail.com>
wrote:

> Hi Andre,
>
> I am planning to add a QCI 1 later on, but just wanted to see the
> behavior. I've tried modifying it to 9, but epc still shows 7. I thought
> maybe because the default configuration has the user_db.csv stored
> somewhere else that isn't being modified, so I tried to run the epc.conf
> that is in the srsepc directory, but I get an error in reading the
> user_db.csv file. Below is the output:
>
>
>
>
>
>
>
>
>
>
> *~/srsLTE/srsepc$ sudo srsepc epc.confBuilt in Release mode using commit
> d045213f on branch master.---  Software Radio Systems EPC  ---Reading
> configuration file epc.conf...Error reading user database file
> user_db.csvError initializing HSS*
>
> The csv file is the same as the example, except the QCI for both is 9
> instead of 7. When I rename the file and add (.example) to the end, epc
> initializes but with a different user_db.csv file because QCI is back to 7.
>
> Appreciate your thoughts on this.
>
> Regards,
> Ayman
>
> On Mon, Apr 20, 2020 at 5:26 AM Andre Puschmann <
> andre.puschmann at softwareradiosystems.com> wrote:
>
>> Hi,
>>
>> On 19/4/20 5:41, Ayman Maghrabi wrote:
>> > Hello all,
>> >
>> > I've setup srsLTE one two PCs with USRP. I can run them with the default
>> > configuration with no issue.
>> >
>> > I have been trying to change some minor configuration at the moment,
>> > such as QCI in the user_db.cv <http://user_db.cv> file just to examine
>> > the behavior, but it appears that no change I do gets passed on. For
>> > example, I changed the QCI values from 7 to 1, but the srsEPC still
>> > shows a QCI of 7. I even tried to delete the UE entry from the .cv file
>> > that corresponds to srsUE, but it still connects.
>>
>> The eNBs drb.conf only has an entry for QCI 7 and 9. I think if the EPC
>> sends a invalid QCI it defaults to 7. But the should be an error logged.
>>
>> So either change between 7 or 9, or add QCI 1 to the config.
>>
>> Regarding the deletion of the UE entry: Make sure to exit srsEPC before
>> editing the CSV. The EPC saves the current context to the file so you're
>> changes get overridden if you do them while having the EPC running.
>>
>> If the CSV is empty, no UE can attach.
>>
>> Cheers
>> Andre
>>
>> >
>> > Is there a specific way that I need to change these settings?
>> >
>> > Regards,
>> > Ayman
>> >
>> > <
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