FIELD: radio engineering, communication.
SUBSTANCE: method involves: determining whether a type of a current procedure allows a serving gateway (SGW) to change a tunnel endpoint identifier (TEID) and/or an internet protocol (IP) address (S110); and sending a modify bearer request message to the SGW, wherein the modify bearer request message is used for notifying the SGW on whether the SGW is allowed to change the TEID and/or the IP address (S120).
EFFECT: preventing loss of service data packets of a user or service interruption caused by that the SGW modifies the TEID or the IP address.
22 cl, 12 dwg
