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Device-to-device communication method and device

A device-to-device, communication method technology, applied in wireless communication, machine-to-machine/machine-type communication services, electrical components, etc., can solve problems affecting communication effects, interference, and no technical solutions

Inactive Publication Date: 2019-02-12
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the network side and the UE using the D2D transmission mode will use the same resource at the same time, which will cause interference to each other and affect the communication effect
[0010] There is currently no specific technical solution on how to deal with this interference to improve communication

Method used

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  • Device-to-device communication method and device
  • Device-to-device communication method and device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] figure 1 It is the first flowchart of the D2D communication method provided by the embodiment of the present invention.

[0025] Such as figure 1 As shown, the process includes:

[0026] In step 101, a UE adopting a D2D transmission mode receives dedicated D2D resource information and emergency resource pool information allocated by a network side.

[0027] Step 102, the UE measures the power value of the received signal from the network side, and judges whether the power value is greater than a preset threshold value, and if so, determines that the UE is at the center of the cell, otherwise, determines that the UE is at the edge of the cell.

[0028] Wherein, the preset threshold value is configured by the network side through an RRC message or an SIB message, or is set by the UE according to a preset method.

[0029] In this step, the UE may store its location information in the cell, that is, whether it is at the center or edge of the cell, in a preset storage spa...

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Abstract

The embodiment of the invention discloses a D2D (device-to-device) communication method and device. The method comprises that: UE (User Equipment) of D2D transmission mode receives special D2D resource information and emergency resource pool information distributed by a network side; the UE measures the power value of a receiving signal coming from the network side, whether the power value is more than a preset threshold value is judged, if so, it is judged that the UE is located at the center position of a cell, or it is judged that the UE is located at the edge position of the cell; with respect to the UE located at the center position of the cell, whether the duration of the UE in a preset exception state reaches preset duration is determined, when the duration reaches the preset duration, the UE carries out D2D communication through an emergency resource pool. According to the embodiment of the invention, a solution is provided for the condition that the network side and the UE of D2D transmission mode utilize the same resource simultaneously to cause mutual interference; and the communication effect is improved.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a device-to-device (D2D) communication method and device. Background technique [0002] In the existing long term evolution (Long Term Evolution, LTE) system, the data transmission between two user equipments (UEs) is realized by relaying on the network side, that is, the UE at the sending end first sends the communication data to to the network side, and then the network side forwards the data to the receiving end UE. Even if two UEs that are close to each other want to communicate, the communication data must be transmitted by the network side before being sent to the other party. [0003] The D2D communication method is proposed for the application scenario where the distance between the UE at the sending end and the UE at the receiving end is relatively close. At this time, the communication data can be directly transmitted between the two UEs, wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W72/04
Inventor 陈喆
Owner POTEVIO INFORMATION TECH CO LTD
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