LTE: Activate Dedicated EPS Bearer Context Reject

·        The UE may reject the ACTIVATE DEDICATED EPS BEARER CONTEXT REQUEST from the MME by sending an ACTIVATE DEDICATED EPS BEARER CONTEXT REJECT message.

·        The ACTIVATE DEDICATED EPS BEARER CONTEXT REJECT message shall include the EPS Bearer Identity and an ESM Cause value indicating the reason for rejecting the dedicated EPS bearer context activation request.

·        The ACTIVATE DEDICATED EPS BEARER CONTEXT REJECT message contains an ESM cause that typically indicates one of the following values:

#26: insufficient resources

#31: request rejected, unspecified

#41: semantic error in the TFT operation

#42: syntactical error in the TFT operation

#43: invalid EPS bearer identity

#44: semantic error(s) in packet filter(s)

#45: syntactical error(s) in packet filter(s) or

#95 – 111: protocol errors

·        After receiving the ACTIVATE DEDICATED EPS BEARER CONTEXT REJECT message, the MME shall stop the timer T3485 and abort the dedicated EPS bearer context activation procedure

Reference 3GPP TS 24.301

Example: ACTIVATE DEDICATED EPS BEARER CONTEXT REJECT message