Method and device for paging in device-to-device communication

A device and paging source technology, applied in the field of communication, can solve the problem of high probability of UE missing paging and being paged, and achieve the effect of improving paging efficiency and reducing error rate

Inactive Publication Date: 2012-07-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when using the existing technology for D2D paging

Method used

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  • Method and device for paging in device-to-device communication
  • Method and device for paging in device-to-device communication
  • Method and device for paging in device-to-device communication

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] An embodiment of the present invention provides a paging method in D2D communication. The execution subject of this method is the paging source UE, such as figure 1 As shown, the method includes:

[0044] Step 101, discovering a paging target UE in D2D communication through a discovery subframe and determining a device identifier of the paging target UE;

[0045] The discovery subframe is used to discover surrounding terminal devices, and the paging source UE discovers other neighboring devices and related information of the neighboring devices through the discovery subframe to provide conditions for further D2D communication, where the related information can be a device identifier.

[0046] Step 102: Determine the paging time-frequency resource corresponding to the paging subframe of the paging target UE according to the device identifier of the paging target UE and the current cell frame timing;

[0047] Optionally, the paging time-frequency resource includes the sy...

Embodiment 2

[0079] An embodiment of the present invention provides a paging method in D2D communication, such as Figure 5 As shown, the method includes:

[0080] Step 501, the paging source UE discovers the paging target UE in D2D communication through the discovery subframe and determines the device identity of the paging target UE;

[0081] It should be noted that, in order to control interference and system compatibility, the solution of the present invention adopts a timing structure similar to the LTE cellular network, such as Figure 6 As shown, in the system frame provided by the embodiment of the present invention, each system frame includes a preset number of subframes, for example, each system frame is composed of 10 subframes, the length of each system frame is 10ms, and the length of each subframe is 1 ms consists of 2 time slots of 0.5 ms, and each time slot consists of 7 OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols. ...

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Abstract

The invention discloses a method and a device for paging in device-to-device communication, relating to the technical field of communications and being capable of improving the paging efficiency and reducing error rate. In the embodiments of the invention, the method comprises the following steps of: discovering the paging destination UE (User Equipment) in the D2D (Device-to-Device) communication through a discovery subframe, and determining an equipment identifier of the paging destination UE; determining a paging time frequency resource corresponding to a paging subframe of the paging destination UE according to the equipment identifier of the paging destination UE and the current Cell of Origin frame timing; and transmitting a paging request message for D2D communication to the paging destination UE at the paging time frequency resource. The scheme provided by the embodiments of the invention is suitable for being used in the D2D communication.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a paging method and device in device-to-device communication. Background technique [0002] At present, the cellular network is the main wireless communication network. In this kind of communication, if the two terminal devices are far away, the communication between the two terminal devices needs to be forwarded by the base station, that is, the data packet is sent from one terminal device to the base station, and then the base station forwards the data packet to the base station. This data packet is forwarded to another terminal device; if the two terminal devices are close to each other and within the communication range of each other, the data packet is directly transmitted between the communication terminal devices without being forwarded by the base station, which can save half of the air interface resources . [0003] Direct communication between two term...

Claims

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Application Information

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IPC IPC(8): H04W68/00
Inventor 周晗冯淑兰
Owner HUAWEI TECH CO LTD
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