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Switching method, equipment and system

A technology for identifying and feeding back messages, applied in wireless communications, electrical components, etc., to solve problems such as data channel establishment errors, inability to guarantee business continuity and data integrity, and inability to guarantee business continuity and integrity.

Inactive Publication Date: 2017-10-31
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combined with the existing MME handover mechanism, after the MME receives the handover request message from the original eNodeB, the MME judges that the SGW does not need to be changed, that is, the SGwC does not change, and will send the current SGwU address and tunnel ID to the new eNodeB, then What the new eNodeB obtains is not necessarily the new SGwU address and tunnel ID after the final selection by the SGWU. If the subsequent SGWU reselects, the uplink and downlink data channels will be incorrectly established, resulting in the uplink data arriving at the eNodeB. SGwU transmits, resulting in failure to connect with SGwU or discarding after receiving by SGwU, resulting in failure to upload correctly
Business continuity and data integrity cannot be guaranteed
[0005] Therefore, after the separation of the GW control plane and the user plane, the existing MME mechanism for judging the change of the SGW cannot support the correct and reliable transmission of data streams in some scenarios, and cannot guarantee the continuity and integrity of services

Method used

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  • Switching method, equipment and system

Examples

Experimental program
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Embodiment 1

[0084] see image 3 , which shows a flow of a handover method applied to a serving gateway S-GW provided by an embodiment of the present invention, in which the serving gateway S-GW includes a separate control plane S-GWC and a user plane S-GWU, The method can include:

[0085] S301: The S-GWC receives the S-GW change identifier transmitted by the MME;

[0086] Wherein, the S-GW change flag is used to indicate that the S-GWU in the S-GW is changed and the S-GWC in the S-GW is not changed.

[0087] In a specific implementation, such as figure 2 As shown, the control plane S-GWC of the S-GW is connected to the MME and performs data exchange through the S11 interface.

[0088] It should be noted that after receiving the path switch request message sent by other network elements, such as the radio access network element eNodeB or the tracking area update message sent by the user, the MME confirms that the S-GWC in the S-GW does not When a change occurs but the S-GWU changes, ...

Embodiment 2

[0110] see Figure 7 , which shows a flow of a handover method applied to a mobility management entity MME provided by an embodiment of the present invention, and the method may include:

[0111] S701: The MME generates an S-GW change identifier according to the handover instruction, and sends the S-GW change identifier to the S-GWC;

[0112] Wherein, the S-GW change flag is used to indicate that the S-GWU in the S-GW is changed and the S-GWC in the S-GW is not changed.

[0113] It should be noted that, in this embodiment, the opposite end of the MME is the serving gateway S-GW whose control plane and user plane are separated; in a specific implementation, the MME is connected to the control plane S-GWC of the S-GW , and perform data interaction through the S11 interface.

[0114] In the specific implementation process, the MME can determine that the S-GWC does not change according to the handover instruction, and determine that the S-GWU has changed according to the current...

Embodiment 3

[0131] Based on the same technical idea of ​​embodiment one and embodiment two, see Figure 9 , which shows a specific implementation process of a handover provided by the embodiment of the present invention. In this embodiment, the location change caused by the movement of the user equipment UE, which leads to the update of the tracking area TA, is used as an example for illustration. The specific process may include:

[0132] S901: UE sends a tracking area update message;

[0133] S902: The MME determines according to the tracking area update message that the S-GWU in the S-GW has changed and the S-GWC in the S-GW has not changed;

[0134] S903: The MME sends a session creation request to the S-GWC;

[0135] Wherein, the session creation request includes an S-GW change identifier for indicating that the S-GWU in the S-GW is changed and the S-GWC in the S-GW is not changed.

[0136] S904: The S-GWC selects an S-GWU from its corresponding S-GWU group according to the S-GW ch...

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Abstract

The embodiment of the invention discloses a switching method, equipment and system. The method can comprise the steps that: an S-GWC receives an S-GW change identifier transmitted by a mobile management entity MME; the S-GWC determines an updated S-GWU according to the S-GW change identifier, and sends an updating feedback message to the MME; the S-GWC receives a deletion request sent by the MME, and deletes the S-GWU before updating according to the deletion request; and the S-GWC sends a response message after deletion completion to the MME.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a switching method, equipment and system. Background technique [0002] System Architecture Evolution (SAE, System Architecture Evolution) is a network architecture proposed by the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) for the next generation mobile wireless network. Such as figure 1 As shown, the SAE architecture may include: an evolved base station (eNodeB, Evolved NodeB) belonging to an evolved radio access network (E-RAN, Evolved RAN) network element, a home subscriber server (HSS, Home Subscriber Server), a mobility management entity ( MME, Mobility ManagementEntity), Serving GPRS Support Node (SGSN, Serving GPRS Support Node), Serving Gateway (S-GW, Serving Gateway), Packet Data Network Gateway (P-GW, Packet Data NetworkGateway), policy and aggregate charging rule functions Entity (PCRF, Policy and Charging RuleFunctional...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/12
CPCH04W36/00H04W36/0027H04W36/0033H04W36/12
Inventor 汪钱纯樊学芹刘西亮刘卫东
Owner ZTE CORP
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