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Data transmission method and apparatus in device-to-device (D2D) communication

A data transmission method, data transmission technology, applied in the direction of digital transmission system, transmission system, wireless communication, etc.

Active Publication Date: 2014-12-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a data transmission method and device in D2D communication, which are used to solve the problem of how each D2D terminal in the same D2D communication group uses D2D communication resources to transmit and receive data

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  • Data transmission method and apparatus in device-to-device (D2D) communication
  • Data transmission method and apparatus in device-to-device (D2D) communication
  • Data transmission method and apparatus in device-to-device (D2D) communication

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Embodiment Construction

[0033] LTE D2D technology refers to the D2D communication controlled by the LTE network working 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 overcome some problems of traditional D2D technology, such as uncontrollable interference. The introduction of the LTE D2D feature will make the LTE technology evolve from a pure wireless mobile cellular communication technology to a universal connectivity technology (Universal Connectivity Technology).

[0034] When D2D communication is introduced into the licensed frequency band of LTE, the D2D communication link will share wireless resources with cellular communication, which is also the most basic problem of integrating D2D communication technology in the cellular system. There are two ways to share wireless resources: sharing in an orthogonal way and sharing in a multiplexing way. Wireless resource sharing in ...

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Abstract

Disclosed are a data transmission method and device in device-to-device (D2D) communications, relating to the field of wireless communications, and used to solve a problem of how each D2D terminal in a same D2D communications group sends and receives data by using a D2D communications resource. In this solution, a network side device receives a resource occupation request sent by at least one D2D terminal in a same D2D communications group, determines a D2D communications resource corresponding to the D2D communications group, determines, according to the received resource occupation request, a resource location of a transmission resource of each D2D terminal in the D2D communications group, the transmission resource of each D2D terminal being in the D2D communications resource, and sends a notification indicating the resource location of the transmission resource of each D2D terminal to a corresponding D2D terminal, and the corresponding D2D terminal transmits data on the transmission resource of the D2D terminal. It can be seen that, this solution solves the problem of how each D2D terminal in a same D2D communications group sends and receives data by using a D2D communications resource.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a data transmission method and device in D2D communication. Background technique [0002] Device-to-Device (D2D) (also called terminal direct) communication system under the control of cellular network, for the convenience of description, the communication link between D2D terminals is defined as D2D link (Device- to-device link), the cellular communication link between the network and the D2D terminal is called N2D link (Network-to-device link), such as figure 1 shown. [0003] For the D2D data transmission process, whether to use the uplink carrier (Frequency division duplex (FDD) system) / uplink subframe (Time division duplex (Time division duplex, TDD) system), or to use the downlink carrier (FDD system) / The consideration of the downlink subframe (TDD system) is as follows: For the downlink subframe / downlink carrier, the following situation will occur. The term...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04W72/121
Inventor 赵锐高秋彬陈文洪彭莹张然然
Owner DATANG MOBILE COMM EQUIP CO LTD