Device to Device communication method, terminal and system

A communication method and terminal technology, applied in the field of communication, can solve problems such as signal reception errors

Inactive Publication Date: 2013-12-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a terminal-to-terminal D2D communication method, terminal, and system, which are used to effectively solve the problem of signal reception errors in D2D communication

Method used

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  • Device to Device communication method, terminal and system
  • Device to Device communication method, terminal and system
  • Device to Device communication method, terminal and system

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] Embodiments of the present invention provide a terminal-to-terminal D2D communication method, a terminal, and a system, which can effectively prevent signal reception errors in D2D communication and improve user experience. Each will be described in detail below.

[0050] see figure 1 , figure 1 It is a flowchart of a terminal-to-terminal D2D communication method provided by an embodiment of the present invention. Such as figure 1 As shown, the term...

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Abstract

The embodiment of the invention discloses an establishment method of Device to Device (D2D) communication, a terminal and a system. The D2D communication method comprises the following steps: a second terminal detects the time t1'' of sending a test instruction by a first terminal to the second terminal, wherein the test instruction is sent by the first terminal at the fixed time of t'1 starting from the upstream of the first terminal; the second terminal determines whether the time t''1 is within the CP range beginning at the fixed time t'2 from the upstream of the second terminal, and if the time t''1 is within the CP range, a test response is sent to the first terminal at the fixed time t'2 starting from the upstream of the second terminal such that the first terminal sends a signal at the fixed time t1' starting from the upstream of the first terminal after having received the test response; and the second terminal receives the signal sent by the first terminal at the fixed time t'2 starting from the upstream of the second terminal. According to the embodiment of the invention, signal reception errors in the D2D communication can be prevented effectively.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a D2D communication method, terminal and system. Background technique [0002] In a traditional cellular network, direct communication between terminals (Device to Device) is referred to as D2D communication for short. In D2D communication, signals can be directly transmitted between terminals without the need for forwarding by intermediate devices such as base stations, which can improve the utilization of spectrum resources, increase the capacity of cellular networks and reduce the signaling of intermediate devices such as base stations overhead. In D2D communication, the direct communication between terminals uses the spectrum resources of the wireless cellular network. [0003] In practical applications, D2D communication generally shares part of the spectrum of cellular communication. For example, D2D communication can share the uplink spectrum of cell...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04L27/26
CPCH04L27/2655H04L27/2678H04W56/005
Inventor 冯淑兰周晗
Owner HUAWEI TECH CO LTD
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