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Method and device for data transmission

A data transmission method and data transmission technology, applied in the field of data transmission methods and equipment, can solve problems such as inability to perform data transmission, and achieve the effect of preventing data connections from being unable to communicate normally

Active Publication Date: 2012-04-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] The embodiment of the present invention provides a data transmission method and device to solve the problem that the local gateway cannot perform normal data transmission when the terminal device accesses the local network in a non-LIPA manner in the existing technical solution

Method used

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  • Method and device for data transmission

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Experimental program
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Effect test

Embodiment 1

[0116] In the LTE system, the core network control node is the MME. Since the MME is connected to the LGW through the SGW, the interface between the SGW and the LGW, that is, the user plane interface between the LGW and the core network is the S5 interface.

[0117] The terminal device activates LIPA in the cell of the home base station, and then the target cell is switched to the macro cell due to the movement of the terminal.

[0118] Such as Figure 7 As shown, it is a schematic flowchart of a data transmission method in a specific scenario proposed in Embodiment 1 of the present invention, which specifically includes the following steps:

[0119] Step S701 , due to the movement of the UE, the source HNB initiates an S1 handover process, and performs corresponding processing according to the procedure specified in TS 23.401 (specifically, steps 1 to 15).

[0120] Step S702, the MME sends a Change Notification Request message to the SGW, which carries indication information...

Embodiment 2

[0127] In the UMTS system, the core network control node is the SGSN, and the user plane interface between the SGSN and the LGW is the Gn interface.

[0128] The terminal activates LIPA in the cell of the home base station, then enters the idle state and resides in the macro cell, and then the LGW receives downlink data.

[0129] Such as Figure 8 As shown, it is a schematic flowchart of a data transmission method in a specific scenario proposed in Embodiment 2 of the present invention, which specifically includes the following steps:

[0130] In step S801, the LGW receives downlink data that needs to be sent to the UE.

[0131] Step S802, the LGW sends the first data packet of the downlink data to the SGSN, and buffers other data packets.

[0132] Step S803, the SGSN pages the UE within a certain area.

[0133] Step S804, the UE responds to the paging of the SGSN, and accesses the network through the macro base station (RNC).

[0134] The SGSN judges that the UE accesses ...

Embodiment 3

[0140] The application scenario of this embodiment is that in an LTE system, the core network control node is an MME.

[0141] The terminal activates LIPA in the cell of the home base station, then enters the idle state and resides in the macro cell, and then the LGW receives downlink data.

[0142] Such as Figure 9 As shown, it is a schematic flowchart of a data transmission method in a specific scenario proposed in Embodiment 3 of the present invention, which specifically includes the following steps:

[0143] In step S901, the LGW receives downlink data that needs to be sent to the UE.

[0144] Step S902, the LGW sends the first data packet of the downlink data to the SGW, and buffers other data packets.

[0145] Step S903, the SGW sends a downlink data notification to the MME.

[0146] Step S904, the MME pages the UE within a certain area.

[0147] Step S905, the UE responds to the paging of the MME, and accesses the network through the macro base station (eNB).

[014...

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Abstract

The embodiment of the invention discloses a method and device for data transmission. According to the technical scheme provided by the embodiment of the invention, corresponding indicating information is sent to a local gateway by a core network control node in a local network access manner (LIPA or remote access) allowed by a terminal device, so that downlink data are sent to the terminal device by the local gateway in different manners when the local gateway needs to send the downlink data to the terminal device, and further a corresponding strategy is adopted to transmit the downlink data by the local gateway according to the corresponding manner of accessing the terminal device to the local network, thereby avoiding abnormal communication of data connection, caused by the contradiction between a specific transmission strategy and a practically applied manner of accessing the local network.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and equipment. Background technique [0002] LIPA (Local IP Access) technology is a technology that allows terminals to access the local network associated with the home base station (Home (evolved) NodeB, H(e)NB). A terminal capable of IP (Internet Protocol, Internet Interconnection Protocol) can access a local IP network, such as a home network or an enterprise network, without passing through an operator's core network. Among them, the terminal accesses the local network through a local gateway (Local Gateway, LGW). In the 3GPP (The 3rd Generation Partnership Project, Third Generation Partnership Project) R10 stage, the local gateway and the femtocell are implemented on the same physical entity. After R10, the local gateway and the home base station may be implemented on different physical entities. Such as figure 1 As shown, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/08H04W88/16
CPCH04W8/082H04W76/022H04W88/16H04W48/08H04W76/12
Inventor 周燕飞张娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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