PGW (Packet Data Network Gateway) switching control method, system, and server

Abstract

This invention discloses a PGW switching control method. The method comprises the following steps: a terminal sends current position information to a source PGW; the source PGW detects user data delay information and reports judging information to a server, wherein the judging information includes the current position information, the user data delay information, source PGW information, MME (Mobility Management Entity) information and an APN (Access Point Name); the server compares the received judging information with historical information stored in a database, and judges whether PGW switching needs to be performed or not according to a comparison result; if so, a PGW switching instruction is sent to the MME; the MME sends a detaching request to the terminal; and, the terminal initiates an attachment according to the detaching request, and selects a current optimal PGW as a destination PGW. The method can control the terminal to switch the PGW at an optimal moment, reduces route detouring, and improves user experience. The invention further discloses a PGW switching control system and server.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a PGW switching control method, system and server. Background technique [0002] In the 4G standard, when a user accesses the EPC network (that is, the core network of the 4G mobile communication network), he will choose a PGW to anchor, and the PGW will always serve the user's data access, that is, the user's data needs to pass The PGW accesses the data network until the user detaches. Under normal circumstances, the PGW will not change, but as the user's location changes, there will be a data detour when accessing the data network through the fixed PGW anchored during the initial access, thus affecting the user's service experience. [0003] In order to reduce routing detours, the 4G standard subsequently added the function of PGW reselection (handover), that is, when the user is in an idle state, the EPC can initiate user reattachment, and when the user attaches again, the...

AI Technical Summary

Problems solved by technology

[0004] However, in actual deployment, when the EPC core network triggers the user to initiate reattachment is a difficult problem, because the core network does not have a good means to judge when to switch the PGW

Therefore, how to solve the problem that the current EPC network cannot effectively judge when to perform PGW reselection, resulting in easy routing detours, is a technical problem to be solved by those skilled in the art

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