Time-divided transmission method capable of avoiding interference for D2D multi-casting communication system

A technology of multicast communication and transmission method, applied in the field of time-sharing transmission, can solve the problems of limited spectrum resources, waste of time slot resources, low utilization rate of time slots, etc., to achieve simple operation, reduce the number of time slots, and avoid conflicts between clusters Effect

Inactive Publication Date: 2012-08-01
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the spectrum resources that can be used for cellular mobile communication are very limited. The bandwidth allocated for the mobile communication system at the World Wireless Communication Conference in 2007 was less than 600MHz. However, the demand for wireless communication bandwidth by 2020 is expected to be between 1200MHz and 1700MHz.
This method is easy to operate, because the terminal ca

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  • Time-divided transmission method capable of avoiding interference for D2D multi-casting communication system
  • Time-divided transmission method capable of avoiding interference for D2D multi-casting communication system
  • Time-divided transmission method capable of avoiding interference for D2D multi-casting communication system

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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The present invention is a time-sharing transmission method that uses D2D multicast communication to avoid conflicts in a cellular network, and its application scenarios are as follows: figure 1 Shown: adjust the transmit power of the cluster head terminal to adapt to the geographical range of the cluster (see figure 2 shown), and perform time-sharing transmission; that is, assign clusters with conflicting terminals to transmit data in different time slots to avoid inter-cluster conflicts; and select multiple clusters without conflicting terminals to transmit data at the same time Simultaneously perform multicast transmission in the slot, and make full use of each time slot to improve network transmission efficiency, so the present inventio...

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Abstract

The invention discloses a time-divided transmission method capable of avoiding interference and adopting D2D multi-casting communication for a cellular network. The method adopts the scheme that: adapting a cluster geographical range by regulating cluster head terminal transmitting power, and carrying out time-divided transmission; namely, distributing clusters with interference terminals to different time slot transmission data to avoid cluster interference; and selecting a plurality of clusters with no interference to be transmitted in a multi-casting manner in the same time slot, and fully utilizing each time slot to improve the network transmission efficiency. Therefore the method is called an each time slot multi-cluster transmission method. The time-divided transmission method provided by the invention not only avoids interference between clusters, but also greatly reduces the number of required time slots, and the network transmission efficiency is improved.

Description

technical field [0001] The invention relates to a time-division transmission method using D2D multicast communication to avoid conflicts in a cellular network, and belongs to the technical field of wireless communication. Background technique [0002] Mobile communication technology is developing rapidly, and now 3G has entered the commercial stage. The industry is also making more efforts for the development of next-generation wireless communication technologies, for example, Long Term Evolution (LTE) and IEEE 802.16m (Institute of Electrical and Electronics Engineers) in 3GPP. In addition, 3GPP is also conducting more in-depth research on LTE-A. The development and evolution of these communication technologies are carried out under the scope of the future mobile cellular network IMT-A (International Mobile Telecommunications-Advanced). The future mobile cellular network needs to have high speed, large capacity and higher quality of service (QoS), and the corresponding ba...

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Application Information

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IPC IPC(8): H04W4/06H04W16/10
Inventor 王晓湘李兆宁王玉龙李松赵渊张鸿涛
Owner BEIJING UNIV OF POSTS & TELECOMM
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