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Method and equipment for transmitting D2D data

A data transmission method and data transmission technology, applied in the field of wireless communication, can solve problems such as inability to transmit data by TxUE, and achieve the effect of reducing the influence of the "far-near" effect

Active Publication Date: 2015-07-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a D2D data transmission method and equipment to solve the problem that the "far-near" effect cannot correct the data sent by the Tx UE with a long distance

Method used

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  • Method and equipment for transmitting D2D data
  • Method and equipment for transmitting D2D data
  • Method and equipment for transmitting D2D data

Examples

Experimental program
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Embodiment Construction

[0097] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0098] An embodiment of the present invention provides a D2D data transmission method, such as figure 1 As shown, it specifically includes the following operations:

[0099] Step 100, the D2D data sending end (ie Tx UE) determines the status of each sending opportunity in the sending window in the same way as the D2D data receiving end (ie Rx UE).

[0100] Wherein, the sending window may refer to physical resources within a predetermined range of time domain and frequency domain, or may refer to a predetermined length of time domain.

[0101] The sending window is evenly divided into multiple sending opportunities, and the states of sending opportunities are divided into sending data state and silent state. Preferably, the sending window is divided into multiple sending opportunities in the time domain. If the...

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Abstract

Disclosed are a D2D data transmission method and device. The method comprises: determining, by a D2D data sending end, a state of each sending opportunity in a sending window in the same manner as a D2D data receiving end, wherein the sending window is uniformly divided into a plurality of sending opportunities, and the state of each sending opportunity comprises a data sending state and a silent state; and sending D2D data to the D2D data receiving end in the sending opportunity of each data sending state in the sending window. By means of the technical solution provided in the embodiments of the present application, a D2D data sending end sends data on different resources (sending opportunities) or becomes silent, so that different D2D data sending ends are staggered on the resources, thereby alleviating the influence of "near-far" effects.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a device-to-device (Device-to-Device, D2D) data transmission method and device. Background technique [0002] D2D, that is, terminal direct technology, refers to a method in which adjacent user equipment (User Equipment, UE) can transmit data through a direct link within a short distance without forwarding through a central node (ie, a base station). [0003] In D2D research, several typical D2D transmission scenarios include: In Coverage-Single-Cell, In Coverage-Multi-Cell, Partial Coverage and Out of Coverage ) for D2D transmission. [0004] Long Term Evolution (LTE) D2D technology refers to the D2D discovery and communication process that is controlled by the LTE network and works in the LTE licensed frequency band. On the one hand, it can give full play to the advantages of D2D technology, and at the same time, the control of LTE network can also over...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/24
CPCH04W72/02H04W76/14H04W72/0446H04W72/1263H04W72/535H04W84/18H04W88/02
Inventor 赵锐高秋彬陈文洪彭莹
Owner DATANG MOBILE COMM EQUIP CO LTD
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