Method, device, and system for controlling tunnel identifier allocation
AssigneeHuawei Technologies Co., Ltd.
InventorsYu Yin, Caixia Qi
Life of this patent
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Abstract
A method, a device, and a system for controlling tunnel identifier allocation are provided. The method includes: 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; and sending an modify bearer request message to the SGW, in which the modify bearer request message is used for notifying the SGW of whether the SGW is allowed to change the TEID and/or the IP address. The loss of service data packets of a user or the service interruption caused by that the SGW modifies the TEID and/or the IP address is avoided.
Claims12
A method for managing tunnel endpoint identifier (TEID) for a serving gateway (SGW) in a tracking area update (TAU) procedure initiated by a terminal device in an idle state, wherein the method is performed by the SGW and comprises:
- receiving a modify bearer request from a mobility management entity (MME) in the TAU procedure, wherein the modify bearer request indicates that the SGW is allowed to change a first TEID in the TAU procedure, and wherein the first TEID is assigned by the SGW;
- determining whether the first TEID needs to be changed;
- based on a determination that the first TEID needs to be changed, assigning a second TEID to replace the first TEID;
- and
- sending a first modify bearer response including the second TEID to the MME in the TAU procedure.
A serving gateway (SGW), comprising:
- a receiver, configured to receive a modify bearer request message from a mobility management entity (MME) in a tracking area update (TAU) procedure initiated by a terminal in an idle status, wherein the modify bearer request indicates that the SGW is allowed to change a first tunnel endpoint identifier (TEID) in the TAU procedure, wherein the first TEID is assigned by the SGW;
- a processor, configured to determine whether the first TEID needs to be changed, and assign a second TEID to replace the first TEID based on a determination that the first TEID needs to be changed;
- and
- a transmitter, configured to send a first modify bearer response including the second TEID to the MME in the TAU procedure.
A serving gateway (SGW), comprising:
- a processor;
- and
- a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
- receiving a modify bearer request message from a mobility management entity (MME) in a tracking area update (TAU) procedure initiated by a terminal in an idle status, wherein the modify bearer request indicates that the SGW is allowed to change a first tunnel endpoint identifier (TEID) in the TAU procedure, and wherein the first TEID is assigned by the SGW;
- determining whether the first TEID needs to be changed;
- based on a determination that the first TEID needs to be changed, assigning a second TEID to replace the first TEID;
- and
- sending a first modify bearer response including the second TEID to the MME in the TAU procedure.
Dependencies are inferred from the claim text.