Method and device for congestion control and user equipment

Abstract

The invention is applicable to the communication field and provides a method and a device for congestion control and user equipment. The method comprises the steps that: the user equipment UE initiates a session management (SM) request or a mobility management (MM) request to a core network; the UE receives a rejection message, containing back-off time, sent by the core network due to SM congestion or MM congestion; and the UE runs a back-off timer according to the back-off time, monitors information of congestion release during the running of the back-off timer, and stops running the back-off timer when the information of congestion release is monitored. According to the invention, the UE monitors information of SM congestion release or MM congestion release during the running of the back-off timer so that the UE can timely acquire the information of network congestion release.

Description

technical field

[0001] The invention belongs to the communication field, and in particular relates to a congestion control method, device and user equipment. Background technique

[0002] Currently, congestion (also called overload) is a machine-to-machine problem that operators are most concerned about. Therefore, how to effectively control congestion becomes crucial. Today, after the congestion problem is standardized, three types of schemes are used to control congestion, namely: backoff timer, low priority indication, and extended access restriction. Among them, the way of controlling congestion by backoff timer is further divided into three mechanisms: Session Management (Session Management, SM) congestion control based on Access Point Name (Access Point Name, APN), mobility management (Mobility Management) based on APN , MM) congestion control and general non-access stratum (non-access stratum, NAS) level MM congestion control.

[0003] Whether it is APN-based SM con...

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