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D2D relay multicast method assisted by network

A network-assisted, relay node technology, applied in the direction of broadcast service distribution, advanced technology, electrical components, etc., can solve the problems of occupying time-frequency resources, reducing transmission efficiency, interference between terminals, etc., to prolong communication time and avoid failure to complete The effect of data forwarding

Inactive Publication Date: 2016-10-05
BEIJING XINWEI TELECOM TECH +1
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Problems solved by technology

If the D2D communication method between two terminals is adopted, it not only occupies a large amount of time-frequency resources, but also reduces the transmission efficiency, and the interference problem between terminals is also more prominent.

Method used

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  • D2D relay multicast method assisted by network
  • D2D relay multicast method assisted by network

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Embodiment Construction

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, rather than all the embodiments; it should be noted that, in the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other. 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.

[0019] The present invention proposes a network-assisted D2D relay multicast method, including: base station side: receiving the location information and broadcast distance informat...

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Abstract

The invention provides a D2D relay multicast method assisted by a network. The method comprises the steps that: a base station receives position information and broadcast distance information reported by each D2D terminal; a data transmission request sent by a sender is received; a communication group is established for data transmission, and group identifiers are distributed; and if there is a target terminal arranged in the broadcast range of the sender, then relay nodes are selected for all target terminals outside the broadcast range of the sender. According to the invention, the plurality of target terminals randomly arranged in a D2D range of a cellular network are enabled to receive data sent by a sending terminal, the energy consumption and load conditions of the relay nodes are also considered, the continuous D2D communication is ensured, and the D2D communication time is prolonged.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a network-assisted D2D relay multicast method. Background technique [0002] The D2D technology is proposed by the 3rd Generation Partnership Project 3GPP as a new technology that allows adjacent LTE terminals to use cell resources to directly communicate under the control of the communication system. D2D technology can not only improve the spectrum efficiency of the communication system, but also solve the problem of lack of spectrum resources in the wireless communication system to a certain extent, and can also reduce the load of the cell base station and the core network, reduce the transmission power of the terminal, and reduce its battery consumption. [0003] In some scenarios where there are a large number of mobile terminals, D2D can significantly improve the spectrum efficiency of the cellular system. If the D2D communication mode between two ter...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W40/22
CPCY02D30/70
Inventor 戴维琴李静叶周淼孙鹏
Owner BEIJING XINWEI TELECOM TECH
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