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Method, device and system for finding D2D (Device to Device) equipment

A device and wireless resource technology, applied in the field of communication, can solve problems such as the inability to provide D2D device discovery methods, and achieve the effects of improving discovery efficiency and reducing power consumption

Inactive Publication Date: 2015-04-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current existing technology still cannot provide a discovery method between D2D devices

Method used

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  • Method, device and system for finding D2D (Device to Device) equipment
  • Method, device and system for finding D2D (Device to Device) equipment
  • Method, device and system for finding D2D (Device to Device) equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The operation flow of the D2D device side in the method for discovering D2D devices provided by the present invention, such as figure 1 shown, including:

[0050] Step 101: The source D2D device judges whether there is network coverage currently, and if so, executes step 102; otherwise, executes step 104.

[0051]Here, the determining whether there is network coverage includes: the source D2D device determines whether there is network coverage according to the signaling interaction with the network side and the context information in the device, if the source D2D device has normal signaling interaction with the network side and the device If there is network-side context information in , it is determined that there is network-side coverage; otherwise, it is determined that there is no network-side coverage.

[0052] Wherein, the network coverage means that all D2D devices participating in D2D discovery (including source and target D2D devices) are in network coverage; ...

Embodiment 2

[0066] The operation flow of the network side in the method for discovering D2D devices provided by the present invention, such as figure 2 shown, including:

[0067] Step 201: The D2D gateway sends indication information to the eNB through a Mobility Management Entity (MME, Mobility Management Entity) after receiving a request for discovering adjacent D2D devices.

[0068] Specifically, the D2D gateway judges whether the source D2D device and the target D2D device in the request of the neighboring D2D device are allowed to be discovered or discovered according to the subscription data or locally stored data; The source D2D device sends the rejection indication information and the rejection reason; if so, the D2D gateway sends the indication information to the MME where the source D2D device and the target device are located.

[0069] Wherein, the source D2D device and the target D2D device may be located in the same or different MMEs;

[0070] The D2D gateway determines th...

Embodiment 3

[0075] The method for discovering D2D devices provided by the present invention, such as image 3 shown, including:

[0076] Step 301: The source D2D device judges whether there is network coverage, and if so, executes step 302; otherwise, executes step 306.

[0077] Here, the determining whether there is network coverage includes: the D2D device determines whether there is network coverage according to the signaling interaction with the network side, and if there is normal signaling interaction between the D2D device and the network side, it is determined that there is network side coverage; otherwise, Make sure there is no network coverage. Wherein, having network coverage means that all D2D devices participating in D2D discovery (including source and target D2D devices) are in network coverage.

[0078] The D2D device is a device that has D2D discovery and communication capabilities and has subscribed to use the D2D function.

[0079] Step 302: The source D2D device send...

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Abstract

Disclosed is a method for D2D device discovery. The method comprises: a source D2D device determines whether the coverage of a network exists at present, if so, sends a request for discovering an adjacent D2D device, receives wireless resource information, sends bulletin information according to the wireless resource information and monitors response information; and if not, sends bulletin information according to preset wireless resource information in the device and monitors response information. Also disclosed is a system and apparatus for D2D device discovery. The present invention can realize discovery between D2D devices, reduce power consumption of a D2D device, and improve discovery efficiency of a D2D device.

Description

technical field [0001] The present invention relates to the communication field, and in particular to a method, device and system for discovering D2D devices. Background technique [0002] Device to Device (D2D, Device to Device) communication refers to direct communication between adjacent devices, such as Bluetooth. D2D communication generally uses unlicensed spectrum, such as 2.4GHz. D2D includes two aspects: discovery and communication. Discovery refers to identifying D2D-capable user equipment running D2D applications in the adjacent area, and communication refers to D2D equipment performing user plane data transmission through direct connection between users or via eNB. The usage scenarios of D2D technology include network coverage (such as commercial applications) and no network coverage (such as public safety communication). For scenarios with network coverage, the D2D control plane implementation process is generally managed by the network side. For scenarios with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16H04W52/02
CPCH04W8/005Y02B60/50Y02D30/70H04W8/14H04W48/16
Inventor 许辉
Owner ZTE CORP
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