A terminal-to-terminal d2d communication method, terminal, and system

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

Inactive Publication Date: 2016-08-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • A terminal-to-terminal d2d communication method, terminal, and system
  • A terminal-to-terminal d2d communication method, terminal, and system
  • A terminal-to-terminal d2d 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

A method, device and system for establishing Device-to-Device (D2D) communication. The method for D2D communication comprises the following steps: a second device detects the time t1" when the test command sent by a first device arrives at the second device, where the test command is sent by the first device at its uplink timing t1'; the second device determines whether the time t1" follows within the period of CP starting from the uplink timing t2' of the second device, if yes, a test response is transmitted to the first device at the uplink timing t2' of the second device, so that the first device transmits a signal at its uplink timing t1' after receiving the test response; the second device receives, at the uplink timing t2' of the second device, the signal sent by the first device. Signal reception error can be effectively avoided in D2D communication by the embodiments of the present invention.

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