LTE: Deactivate EPS Bearer Context Accept

·       The UE after receiving the DEACTIVATE EPS BEARER CONTEXT REQUEST message, shall delete the EPS bearer context identified by the EPS bearer identity.

·       If the EPS bearer identity indicated in the DEACTIVATE EPS BEARER CONTEXT REQUEST is that of the default bearer to a PDN, the UE shall delete all EPS bearer contexts associated to the PDN.

·       After deactivating the identified EPS bearer context (s), the UE shall respond to the MME with the DEACTIVATE EPS BEARER CONTEXT ACCEPT message.

·        If due to the EPS bearer context deactivation, there is only one PDN connection active and that is for emergency bearer services, then the UE shall consider itself attached for emergency bearer services only

·        In the DEACTIVATE EPS BEARER CONTEXT ACCEPT message, the UE shall include Procedure Transaction Identity (PTI) as received in the DEACTIVATE EPS BEARER CONTEXT REQUEST message

·        Other IEs in the DEACTIVATE EPS BEARER CONTEXT ACCEPT message include, EPS bearer identity and Protocol configuration options

Reference 3GPP TS 24.301

Example:  DEACTIVATE EPS BEARER CONTEXT ACCEPT message