Method and device for RS transmission in D2Dcommunication

A reference signal, inter-device technology, applied in transmission path sub-channel allocation, transmission system, wireless communication and other directions, can solve problems such as insufficient resources

Active Publication Date: 2014-03-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, since the position of the symbol used to transmit RS is fixed at the middle of two time slots, when there are many pairs of terminals performing D2D communication, there is a problem of insufficient resources for carrying RS.

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  • Method and device for RS transmission in D2Dcommunication
  • Method and device for RS transmission in D2Dcommunication

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Embodiment Construction

[0045] 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 some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] The technical scheme of the present invention can be applied to various communication systems, such as: Global System for Mobile Communications (GSM, Global System of Mobile communication), Code Division Multiple Access (CDMA, Code Division Multiple Access) system, wideband Code Division Multiple Access ( WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS, General Packet Radio Service), Long Term Evolution...

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Abstract

The invention provides a method and device for information transmission in D2D (Device to Device) communication. The method comprises the following steps: a first user device selects a target resource used for carrying an RS (Reference Signal) from communication resources used for conducting D2D communication, wherein the target resource is determined by feature information used in target resource selecting, and the feature information used in target resource selecting comprises at least one of the following two items: the feature information used for uniquely identifying the first user device and the feature information used for uniquely identifying a second user device in D2D communication with the first user device; the first user device transmits the RS to the second user device through the target resource. According to the invention, the target resource used for carrying the RS is determined according to the feature information of the user devices conducting D2D communication, and the dynamic configuration of resources is realized, so that the RS transmission between terminal pairs can be ensured under the condition of a plurality of terminal pairs conducting D2D communication.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a method and device for transmitting reference signals in D2D communication between devices. Background technique [0002] At present, there is known a device-to-device communication (D2D, Device to Device) technology. In this communication mode, terminals (for example, user equipment (UE, User Equipment)) and terminals can communicate directly without The data load of the base station is shared through forwarding by the base station (for example, an evolved base station (eNB)). Since D2D communication has only one hop and does not require intermediate equipment, it can make better use of spectrum resources, improve spectrum utilization and data rate, and at the same time reduce the burden on the base station. [0003] In order to improve spectrum utilization and maximize the use of radio frequency capabilities of existing terminals, the D2D communication link consider...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W72/04
CPCH04L5/0016H04W72/02H04L5/0048H04L5/0023H04W72/51
Inventor 张兴炜
Owner HUAWEI TECH CO LTD
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