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Method and device for updating user plane gateway

A user plane and gateway technology, applied in the communication field, can solve problems such as the inability to implement GW-U update

Active Publication Date: 2020-06-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for updating the user plane gateway, to solve the technical problem in the prior art that the GW-U cannot be updated when neither the MME nor the GW-C changes.

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  • Method and device for updating user plane gateway

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Experimental program
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Embodiment 1

[0095] The embodiment describes in detail how to implement GW-U update under the first mechanism. Such as Figure 4 As shown, under the first mechanism, the first method to realize GW-U update includes the following steps:

[0096] Step 401: The control plane gateway GW-C sends a first message to the mobility management entity MME indicating that the establishment of the first PDN connection is completed. The first packet data network PDN connection is the user equipment UE and the first user plane gateway GW-C. For a PDN connection between Us, the first message carries a notification parameter, and the notification parameter is used to request the MME to notify the GW-C when the tracking area TA where the UE is located changes.

[0097] Step 402: The GW-C receives a notification message sent by the MME, and the notification message is used to notify the GW-C that the tracking area TA where the UE is located changes.

[0098] Step 403: The GW-C determines, according to the n...

Embodiment 2

[0124] Embodiment 2 describes in detail how to implement GW-U update under the first mechanism. Such as Figure 6 As shown, under the first mechanism, the second method of implementing GW-U update includes the following steps:

[0125] Step 601: The control plane gateway GW-C sends a first message to the mobility management entity MME indicating that the establishment of the first packet data network PDN connection is completed, and the first PDN connection is between the user equipment UE and the first user plane gateway GW-C. For a PDN connection between Us, the first message carries a list of TA identifiers corresponding to the first GW-U.

[0126] Step 602: The GW-C receives a notification message sent by the MME according to the first message, the notification message is used to notify the GW-C that the TA identifier of the tracking area TA where the UE is located is not in the TA ID list.

[0127] Step 603: The GW-C sends a request message to the MME for reestablishin...

Embodiment 3

[0153] Embodiment 3 describes in detail how to implement GW-U update under the second mechanism. Such as Figure 8 As shown, under the second mechanism, the first method to achieve GW-U update includes the following steps:

[0154] Step 801: The mobility management entity MME receives the first message sent by the control plane gateway GW-C for indicating that the establishment of the first packet data network PDN connection is completed, and the first PDN connection is between the user equipment UE and the first user plane gateway GW - a PDN connection between Us, the first message carries a list of TA identifiers corresponding to the first GW-U.

[0155] Step 802: The MME determines that the TA identity of the tracking area TA where the UE is located is not in the TA identity list.

[0156] Step 803: The MME initiates a request message for reestablishing a PDN connection to the UE, the request message is used to trigger the UE to initiate a second PDN connection, and the s...

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Abstract

The invention provides a method and a device for updating a user plane gateway. The method and the device are used for solving the technical problem that GW-U updating cannot be realized under the condition that an MME and a GW-C are not changed in the prior art. According to the embodiment of the invention, four different solutions are provided, an EPS system of the distributed gateway can selectthe optimal GW-U and reestablish PDN connection according to the current position of the UE in the TAU process of the UE from the perspectives of being compatible with an existing implementation mechanism and improving the system efficiency, so optimization of a data transmission path is achieved, and the communication performance is guaranteed.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for updating a user plane gateway. Background technique [0002] System Architecture Evolution (SAE) is 3GPP's upgrade plan for the core network architecture of the LTE wireless communication standard. The SAE architecture is as follows: figure 1 shown. For the SAE architecture, if the UE moves across TAs, the UE will trigger a tracking area update (Tracking Area Update, TAU). When neither the MME nor the S-GW changes, during the execution of the TAU process, the MME and the S-GW - There is no signaling interaction between GWs, wherein, TA (Tracking Area) is a geographical area composed of a continuous coverage cell, and is used to manage the location of the UE in the idle state. [0003] In the SAE architecture, the gateway still needs to retain a large number of external signaling interfaces, and the large number of external signaling inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W76/11H04W76/12
CPCH04W64/00H04W88/16H04W76/12H04W76/19H04W8/08H04W64/003
Inventor 乔晓强李岩
Owner HUAWEI TECH CO LTD