Information processing method and device for location area update

Abstract

The present invention provides an information processing method for location area update. The method comprises the following steps: when a user equipment moves to a new location area, a first management network element acquires instruction information sent by the user equipment or a second management network element, and initiates, according to the instruction information, to a serving gateway an operation request for first deleting a session and then establishing a session, the instruction information being used for instructing the first management network element to initiate the operation request for first deleting a session and then establishing a session (S101); and the first management network element receives a session creation request sent by the serving gateway, and sends a location update request to a home subscriber server (HSS) (S102). The present invention also provides an information processing apparatus for location area update. By means of the present invention, an address of a serving gateway can be updated in a timely manner, thereby ensuring that data is normally transmitted through a data channel.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an information processing method and device for location area update. Background technique [0002] The 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) defines an evolved system architecture (System Architecture Evolution, SAE) communication network architecture in TS23.401. In the above-mentioned communication network architecture, the wireless evolved network is mainly composed of two parts: an access network and a core network, wherein the core network mainly includes a Mobility Management Entity (MME), a Serving GPRS Support Node (ServingGPRS Support Node, SGSN)), and gateway equipment (Serving Gateway (SGW), PDN Gateway (PDN GW)) logical function bodies, in which the mobile management network element is responsible for NAS signaling and user equipment (User Equipment, UE) NAS signaling is encrypted, assigns a temporary identity t...

AI Technical Summary

Problems solved by technology

[0008] In the current technology, after the UE returns to the source-side mobility management network element (MME1), MME1 will send a modify bearer request message to the SGW, if figure 1 The timer started in step 2 shown in , does not expire, then MME1 will not send a delete session request to SGW, then, after receiving the modify bearer request message, SGW cannot perceive the routing area update failure that occurred before the UE process, so it will not send its address to PGW, and PGW will not update the address of SGW, making it impossible for PGW to transfer the data channel from the original route (such as figure 2 Route 1) switch to a new route (such as figure 2 Route 2), at this time, the PGW will still send the downlink data packets to the new SGW according to the original route, resulting in data failure

[0009] The existing technology cannot solve the problem that the UE moves to the second mobility management network element (MMEX). MMEX cannot perceive the UE's routing update failure process before, so during the tracking area update process, the SGW will not send a message containing its address to the PGW. message, so the data channel cannot be switched back to the blue line (eg figure 2 Direction shown in route 2)

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