Method and device for overload control

Abstract

The invention discloses an overload control method, a gateway device, a mobility management network element and a PGW. The method includes: a gateway device determines first overload indication information, where the first overload indication information is used to indicate an overload control strategy; the gateway device sends the first overload indication information to a mobility management network element, so that the mobility management network The unit executes the overload control strategy according to the first overload indication information. The overload control method, gateway device, mobility management network element, and PGW of the embodiments of the present invention can avoid adverse effects caused by device overload, thereby effectively controlling device overload.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to an overload control method, a gateway device, a mobility management network element and a packet data network gateway (Packet Data Network Gateway, PGW). Background technique [0002] In actual network deployment, each network device may be connected to multiple other node devices, for example, a serving gateway (Serving Gateway, SGW) is connected to multiple mobility management network elements, or multiple PGWs are connected. The process of terminal equipment accessing the network and using the communication network to communicate is relatively complicated. First of all, the process of connecting the terminal to the network when it is turned on is the attaching process. After the attaching process is successfully completed, the terminal accesses the network; then, when the terminal uses network resources for communication, bearer resources must be established to reali...

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Problems solved by technology

[0003] In some scenarios, such as some vehicles moving a large number of users, which may cause a large number of users to initiate the attachment process at the same time, a large number of Create Session Request / Response (Create SessionRequest / Response) messages will be generated between the SGW and the PGW, or, A large number of users initiate a service request (Service Request) process at the same time. Correspondingly, this process will trigger a large number of Modify bearer request (Modify bearer request) messages between the Mobility Management Entity (MME) and the SGW, and will also Trigger the signaling between some SGWs and PGWs. In this scenario, the equipment may be overloaded. There may be MME overload, SGW overload, or PGW overload. At the same time, equipment load imbalance may also occur. For example, some Devices are heavily loaded while some devices are lightly loaded

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