D2D (Device-to-Device) communication system based on network coding and relaying and achieving method of D2D communication system

A technology of network coding and communication system, which is applied in the field of D2D communication system based on network coding and relay, can solve the problems of communication radius and communication power limitation, low communication quality, etc., and achieve the goal of reducing burden, improving communication quality and making significant progress Effect

Inactive Publication Date: 2015-06-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to provide a D2D communication system based on network coding and relay and its implementation method, which mainly solves the problems in the prior art that the communication radius and communication power are limited and the communication quality is not high

Method used

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  • D2D (Device-to-Device) communication system based on network coding and relaying and achieving method of D2D communication system
  • D2D (Device-to-Device) communication system based on network coding and relaying and achieving method of D2D communication system
  • D2D (Device-to-Device) communication system based on network coding and relaying and achieving method of D2D communication system

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Embodiment 1

[0038] The D2D communication system based on network coding and relay includes a signal receiving system and a signal sending system corresponding to the signal receiving system. Wherein, the signal receiving system includes a receiving mode determiner, a time slot determiner, an optimum determiner, a demodulator and a channel decoder which are sequentially connected. In order to improve the performance of the receiving system, such as figure 2 As shown, people can connect buffers between the time slot judger and the best judger according to the actual situation; as Figure 4 As shown, the buffer is connected between the channel decoder and the optimal decision device; as Figure 6 As shown, the network coding mode determiner is connected between the time slot determiner and the optimal determiner. The signal transmission system includes a network encoder, a transmission mode judger, a channel encoder and a modulator connected in sequence. In order to improve the performan...

Embodiment 2

[0045] Such as Figure 4 , Figure 5 As shown, when the distance between the cellular user acting as a relay and the base station is greater than 1.5 times the farthest distance between the D2D user and the base station, we use the second method for communication. Figure 4 Among them, receiving mode 3 represents the receiving mode in communication between ordinary cellular users and ordinary D2D communication terminal users and cellular users as relays mentioned in the present invention; receiving mode 4 represents the network-based coding and relaying mentioned in the present invention The receiving method of the D2D user in the communication; Figure 5 Among them, the transmission method 3 represents the transmission method between ordinary cellular users and ordinary D2D communication and the network coding and relay-based D2D users mentioned in the present invention; the transmission method 4 represents the relay cellular users mentioned in the present invention The man...

Embodiment 3

[0050] Such as Figure 6 , Figure 7 As shown, considering the actual situation, we also provide an implementation method of a network coding and relay-based D2D communication system that dynamically selects a network coding method.

[0051] Figure 6 Among them, receiving mode 5 represents the receiving mode in communication between ordinary cellular users and ordinary D2D communication terminal users and cellular users as relays mentioned in the present invention; receiving mode 6 represents the network-based coding and relaying mentioned in the present invention The receiving method of the D2D user in the communication; Figure 7 Among them, transmission method 5 represents the transmission method in communication between ordinary cellular users and ordinary D2D communication terminal users and cellular users based on network coding and relay mentioned in the present invention; transmission method 6 represents the transmission method based on network coding mentioned in t...

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Abstract

The invention discloses a D2D communication system based on network coding and relaying and an achieving method of the D2D communication system. The D2D communication system mainly solves the problems that a communication mode in the prior art has limit to communication radius and communication power, and the communication quality is not high. The D2D communication system based on the network coding and relaying comprises a signal receiving system and a signal sending system corresponding to the signal receiving system, wherein the signal receiving system comprises a receiving mode judger, a time slot judger, a best judger, a demodulator and a channel decoder which are connected in sequence; the signal sending system comprises a network coder, a sending mode judger, a channel coder and a modulator which are connected in sequence. Through the proposal, the D2D communication system achieves the purpose of expanding communication radius and improving communication power and communication quality, and has a very high practical value and a promotional value.

Description

technical field [0001] The present invention relates to a wireless communication method, in particular to a D2D communication system based on network coding and relay and its implementation method. Background technique [0002] D2D (device-to-device) communication, as an auxiliary means of the existing cellular network, has very good application prospects and is a hot spot in the research of next-generation mobile communication technology. However, due to its own functions and environmental influences, its communication radius and power have certain limitations. limit, and the communication quality is not high enough. With the continuous development of communication technology, people have put forward higher requirements for communication effects, and the existing D2D communication methods have become increasingly unable to meet people's needs. Higher communication methods are needed by people and are also an inevitable trend of technological development. Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 田高辉冉小刚崔玲张忠培
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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