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A method and system for establishing a bearer, as well as mme and sgw

A technology of bearer establishment and purpose, applied in the field of mobile communication, can solve the problem that the user bearer of the PGW and the destination SGW cannot be guaranteed to be consistent, and achieve the effect of consistent user bearer

Active Publication Date: 2021-11-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a bearer establishment method and system, MME and SGW to solve the technical problem in the prior art that the user bearer of the PGW and the destination SGW cannot be guaranteed to be consistent in the intra-office handover process of the SGW

Method used

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  • A method and system for establishing a bearer, as well as mme and sgw
  • A method and system for establishing a bearer, as well as mme and sgw
  • A method and system for establishing a bearer, as well as mme and sgw

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081] like Image 6 shown, including the following steps:

[0082] Step S601: the user has multiple PDN connections, and for each PDN connection, the MME sends a create session request (Create Session Request) to the target SGW (ie, the new SGW), notifying the target SGW to create the PDN connection;

[0083] Step S602: The target SGW fails to create one or part of the PDN connections due to resources or other factors. For the PDN connections that fail to be created, the target SGW replies to the MME with a Create Session Response (Create Session Response), carrying a Cause that is not "request accepted" (" Request Accepted").

[0084] Step S603: The MME continues the handover process, but before sending the Modify Bearer Request to the destination SGW, it sends a Delete Session Request to the source SGW, carrying the Indication Flags and the Indication Flags ) operation indication (OperationIndication) is 1, the MME waits or does not wait for the delete session response (D...

example 2

[0088] like Figure 7 shown, including the following steps:

[0089] Step S701: The user has one or more PDN connections, and for each PDN connection, the MME sends a create session request (Create Session Request) to the destination SGW, notifying the destination SGW to create the PDN connection;

[0090] Step S702: The target SGW fails to create some bearers under one or more PDN connections due to resources or other factors. When the target SGW replies with a Create Session Response (Create SessionResponse) for each PDN connection, the failed bearers are also included in the created session. In the bearer context (Bearer Context Created), but the corresponding reason value is not "Request Accepted" ("Request Accepted").

[0091] Step S703: The MME continues the handover process, but before sending a Modify Bearer Request to the destination SGW, sends a Delete Bearer Command to the source SGW;

[0092] Step S704: The source SGW forwards a delete bearer command (Delete Bear...

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PUM

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Abstract

The present invention discloses a method and system for establishing a bearer, as well as an MME and an SGW. The method includes: the MME receives a session creation response message returned by the target SGW, wherein the session creation response message carries the session creation response message of the target SGW. An indication message of a failed PDN connection and / or bearer; the MME notifies the source PGW through the source SGW to release the PDN connection and / or bearer that the target SGW failed to create; the MME sends a bearer modification request to the target SGW. The present invention solves the problem in the prior art that the user bearings of the PGW and the target SGW cannot be guaranteed to be consistent in the intra-office switching process of the SGW, and achieves the technical effect that the user bearers of the PGW and the target SGW are consistent.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a bearer establishment method and system, MME and SGW. Background technique [0002] During the SGW (Serving GateWay, Serving Gateway) changing the intra-office handover process, the new SGW receives a session creation request from the MME (Mobility Management Entity, MME (Mobility Management Entity, mobile management entity, which is the key control node of the 3GPP protocol LTE access network) ( Create Session Request) creates a PDN (PublicData Network, public data network) connection, but due to resources or other factors, some PDN connections of users fail to be created, or some bearers under some PDN connections fail to be created. In the existing agreement, there is no description When this scenario occurs, how to notify the PGW (PDN GateWay, PDN gateway) to release the corresponding failed PDN connection or bearer, so as to ensure that the user bearer is consist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/10H04W76/18
CPCH04W76/10
Inventor 陶望胜
Owner ZTE CORP