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Processing method and device for SGW (Serving Gateway) redirected X2 switching

A processing method and redirection technology, applied in the field of LTE, can solve problems such as incomplete process and failure in the handover completion stage

Active Publication Date: 2012-08-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if the timer is set for too long, the UE may send a Tracking Area Update Request message to the MME before the timer overflows, causing the handover completion phase (Handover completion) to fail due to incomplete procedures.

Method used

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  • Processing method and device for SGW (Serving Gateway) redirected X2 switching
  • Processing method and device for SGW (Serving Gateway) redirected X2 switching
  • Processing method and device for SGW (Serving Gateway) redirected X2 switching

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Embodiment Construction

[0079] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0080] The handover completion (Handover completion) process includes the process of creating a session between the MME and the target SGW, the process of updating the bearer between the SGW and the PGW, the process of releasing resources between the target eNB and the source eNB, and the process of deleting the session between the MME and the source SGW.

[0081] From the perspective of UE and eNB, after the target eNB receives the Path Switch Request Ack (Path Switch Request Ack) message sent by the MME, the target eNB triggers the resource release process with the source eNB. After the resource is released, from the perspective of UE and eNB, the handover process has ended. However, from the perspecti...

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Abstract

The application provides a processing method and a processing device for SGW (Serving Gateway) redirected X2 switching, wherein the method comprises: a process of conversation deletion between an MME (Mobility Management Entity) and a Source SGW, and a process of position update between UE (User Equipment) and the MME; under the condition that a timer has no overflowing, the process of the conversation deletion between the MME and the Source SGW and the process of the position update between the UE and the MME comprises the steps that: the MME receives a Tracking Area Update Request message sent by the UE; the MME replies the Tracking Area Update Request message to the UE, and sends a Delete Session Request message to the Source SGW; the UE receives a Tracking Area Update Accept message, and then replies a Tracking Area Update Complete message to the MME; and the Source SGW replies a Delete Session Response message to the MME after receiving the Delete Session Request message. The application can improve the switching success rate and the switching efficiency, and promote the user experience.

Description

technical field [0001] The present application relates to the technical field of LTE, and in particular, relates to a processing method for SGW-redirected X2 handover, and a processing device for SGW-redirected X2 handover. Background technique [0002] The Long Term Evolution (Long Term Evolution) network is a next-generation mobile wireless access system of 3GPP, including core network equipment and evolved base stations (eNode B, eNB). The core network equipment includes a mobility management entity (Mobility Management Entity, MME) and a user plane processing gateway (Serving Gateway, SGW). MME belongs to the control plane and is responsible for the mobility management of the control plane, including user context and mobility state management, assigning temporary user IDs, etc.; SGW belongs to the user plane and is responsible for initiating paging for downlink data when idle, and managing and saving IP bearers. Parameters and routing information in the network, etc.; t...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/08H04W64/00
Inventor 吴鹏程
Owner DATANG MOBILE COMM EQUIP CO LTD
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