A USER EQUIPMENT CHANGING ATTACHMENT BETWEEN LOCAL BREAKOUT GATEWAYS

摘要

A user equipment UE context is stored in a local memory of a former local breakout gateway, the UE context comprising a session context for a breakout data session. The UE changes attachment from the former local breakout gateway to the new local breakout gateway due to movement. The UE is asigned the source internet protocol address. The session context comprises a source internet protocol IP address, a destination IP address, an identifier of a former local breakout gateway LBGW and an identifier of a new LBGW. The former LBGW receives first traffic originating from the destination IP adderess and addressed to the source IP address, and user the session context to forward the first traffic from the former LBGW to the new LBGW via a first tunnel. There is thus a globally routable IP address for the sesion context that need not change when the UE moves form one LGBW to another. Embodiments are detailed fo routing throught more than two LBGWs, and for when the UE initiates another breakout data session on the new LBGW in addition to the aforesaid breakout data session.