MME (mobility management entity)/UPE (user plane entity) reselection method and system of UE (user equipment)

Abstract

The invention discloses an MME (mobility management entity) / UPE (user plane entity) reselection method and system of UE (user equipment) which are applied to an evolved network. The system comprises an eNodeB (evolved NodeB) and an MME / UPE connected with the eNodeB, wherein the eNodeB is used for receiving a tracking area update request message initiated by the UE, selecting one MME / UPE meeting the highest quality of service from the MME / UPEs connected with the eNodeB to serve as the target MME / UPE after reselection, and sending an access request to the target MME / UPE; and the target MME / UPE is used for interacting with a service MME / UPE of the UE before reselection to obtain the mobility management context of the UE, and executing a position update register process of the UE to become the service MME / UPE of the UE after reselection. By adopting the method and system disclosed by the invention, the problem of communication quality drop or communication interrupt caused by excessively heavy load of the original service MME / UPE can be effectively avoided.

Description

technical field [0001] The present invention relates to an evolved network, in particular to a method for reselecting a user equipment (User Equipment, UE) mobility management entity (Mobility Management Entity, MME) / user plane entity (User Plane Entity, UPE) in the evolved network. Background technique [0002] The Universal Mobile Telecommunications System (UMTS) is a third-generation mobile communication system using the WCDMA air interface technology, and the UMTS system is usually also called a WCDMA communication system. The UMTS system adopts a structure similar to that of the second generation mobile communication system, including a radio access network (Radio Access Network, RAN) and a core network (Core Network, CN). Among them, the wireless access network is used to handle all wireless-related functions, while the CN handles all voice calls and data connections in the UMTS system, and realizes switching and routing functions with external networks. The CN is log...

AI Technical Summary

Problems solved by technology

[0017] The present invention provides a UE MME / UPE reselection method and system, which are used to solve the problem of communication quality caused by not performing a serving MME / UPE replacement when the UE moves between eNodeBs in the same MME / UPE pool in the prior art Problems with drop or loss of communication

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