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PGW switching method for maintaining business continuity and communication equipment

A technology of continuity and service, applied in the field of communication, can solve problems such as interruption of service connection and loss

Active Publication Date: 2017-05-31
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the PGW reselection process, the UE needs to release the original PDN connection first, and then establish a new PDN connection
When the original PDN connection is released, the original service connection will be interrupted and lost

Method used

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  • PGW switching method for maintaining business continuity and communication equipment

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Embodiment Construction

[0048]The invention provides a PGW switching method for maintaining service continuity, which can be applied to a communication system. figure 2 The communication system shown includes a mobility management entity (mobility management entity, MME for short), a serving gateway (SGW for short), a packet data network gateway (PGW for short), a home subscriber server (home subscriber server, referred to as HSS), evolved base station (evolvedNode B, referred to as eNB), application server (Application Server) and user equipment (User Equipment, referred to as UE). Wherein, the SGW is also referred to as the S-GW. PGW is also called PDN GW. The MME, SGW, PGW, and HSS belong to core network equipment, and the core network may be an evolved packet core network (Evolved Packet Core, EPC for short). The eNB is an access network device.

[0049] MME is responsible for managing and storing UE context (such as UE identity / user identity, mobility management status, user security paramet...

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Abstract

The invention discloses a PGW switching method for maintaining business continuity. The method comprises the following steps: a MME determines a target PGW and a target SGW, the MME sends a first session creating request containing a downlink endpoint address of the first S1 bearer to the target SGW so that the target SGW and the target SGW respectively configure the endpoint address of the second S1 bearer and the endpoint address of the second S5 / S8 bearer, and distribute a second IP address for the UE; the MME sends the second IP address to the UE through eNB after receiving a first session creating response containing by the second IP address sent by the target SGW; the eNB modifies the S1 bearer of a uplink data channel as the second S1 bearer from the first S1 bearer after the UE resets the IP address. The invention further provides related communication equipment capable of realizing above mentioned method. The business continuity can be maintained when the PGW is switched by use of the method disclosed by the invention.

Description

technical field [0001] The invention relates to the communication field, in particular to a PGW switching method and communication equipment for maintaining service continuity. Background technique [0002] With the popularization of mobile Internet applications, limitations of existing Internet protocols, such as Transmission Control Protocol (Transmission Control Protocol, TCP for short), or User Datagram Protocol (UDP for short), are more and more obvious. For example, when a terminal switches from a Wireless-Fidelity (Wi-Fi for short) to a cellular (cellular) network, an Internet Protocol (Internet Protocol, IP for short) address needs to be reassigned, and the original service connection will be interrupted and lost. To this end, the prior art has formulated the Quick User Datagram Protocol Internet Connection (Quick User Datagram Protocol Internet Connection, referred to as QUIC) protocol, which uniquely identifies the current application client (Appclient) by defining...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/18
CPCH04W36/0016H04W36/18
Inventor 张浩王国骄郁春波
Owner SHANGHAI HUAWEI TECH CO LTD
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