[srslte-users] [srsLTE] MAC code failure

[Mihai Idu]

Hello srs users,

i am writing this e-mail because i am finding myself into a blocking point,
and i would love a little help. I am implemented the following settup:

1. USRP X310 which is the enodeB and i have 2 users Huawei P9 lite

I manage to define the users in the HSS and changed the MNC and MCC
according to the IMSI. but when i try to connect the phones to the network
i am facing the following :

Attach Request -- UE is already attached.Attach request -- IMSI:
901700000022950
Attach request -- eNB-UE S1AP Id: 19, MME-UE S1AP Id: 19
Attach request -- Attach type: 2
Attach Request -- UE Network Capabilities EEA: 11110000
Attach Request -- UE Network Capabilities EIA: 11110000
Attach Request -- MS Network Capabilities Present: true
PDN Connectivity Request -- EPS Bearer Identity requested: 0
PDN Connectivity Request -- Procedure Transaction Id: 1
PDN Connectivity Request -- ESM Information Transfer requested: false
Downlink NAS: Sending Authentication Request
Plain UL NAS: Authentication Failure
MAC code failure
Received UE Context Release Request. MME-UE S1AP Id 19
UE is not ECM connected. No need to release S1-U. MME UE S1AP Id 19
UE is ECM IDLE.


If anyone has some idea to fix this issue please, let me know. from my
knowledge this error message appears when the MAC provided by the network
is not a correct one.

Thank you,
Mihai
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