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Data message sending method, device and communication system

A technology of data message and sending method, which is applied in the field of communication, can solve problems such as data message sending failure, protocol context unavailable, etc., and achieve the effect of preventing wrong sending of uplink data

Active Publication Date: 2013-01-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found that: in the case of implementing PMIP and GTP protocol conversion using interworking nodes, when a user terminal moves from a GTP VPLMN network to another GTP VPLMN network, or from a PMIP VPLMN network When the network moves to another PMIP VPLMN network, the IWP used by the user terminal may not be the same. If the SGW sends an uplink data packet, since the new IWP cannot recognize the GREKey or TEID in the protocol context saved by the MME, it will As a result, the protocol context saved by the MME is unavailable, and the sending of uplink data packets fails

Method used

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  • Data message sending method, device and communication system
  • Data message sending method, device and communication system
  • Data message sending method, device and communication system

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Embodiment Construction

[0041] In order to make the object, technical solution, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0042] Firstly, the data message sending method provided by the embodiment of the present invention is introduced, which is applied to the handover of the user terminal between networks, figure 1 The flow of Embodiment 1 of the method for sending a data message is described, including:

[0043] Step 101, when the data channel is unavailable, send a protocol context request;

[0044] The data sending node can know that the data channel is unavailable through the information sent by other nodes, such as sent by MME; it can also detect whether the data channel is available by itself, and can send a message requesting a reply through the data channel. If a reply is received, it means that the data channel is available. , otherwise it means that the data cha...

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Abstract

A data message sending method, apparatus and communication system used for a user terminal to shift between networks. The method comprises: sending a protocol context request to a data receiving node when a data tunnel is unused; receiving the protocol context response sent by the data receiving node that responding to the protocol context request, the protocol context response including usable data tunnel information; sending data messages to the data receiving node through the usable data tunnel.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data message sending method, device and communication system. Background technique [0002] With the development of telecommunication technology, the mobile packet network is formed by the third generation mobile communication (3G: the 3 rd generation) network is developing towards the Evolved Packet System (EPS: Evolved Packet System) network, and the core network of the mobile packet network is also changing from the traditional General Packet Radio Service (GPRS: General Packet Radio Service) network to the Evolved Packet Core Network (EPC: Evolved Packet Core) development, in the EPC network, including mobility management node (MME: Mobility ManagementEntity), serving gateway (SGW: Serving GW) and public data network gateway (PGW: PDN GW). MME and SGW are located in the same public land mobile network (PLMN: Public Land Mobile Network) network, and the interf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/12H04L12/58
CPCH04W92/02
Inventor 周青银宇胡颖
Owner HUAWEI TECH CO LTD