Communication method for assisting multi-RIS system based on HARQ

A communication method and base station technology, which is applied in the communication field based on HARQ-assisted multi-RIS systems, can solve problems such as spectrum resource shortage and high energy consumption, and achieve the effect of ensuring reliable transmission and improving spectrum efficiency

Active Publication Date: 2021-08-27
SUN YAT SEN UNIV
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Problems solved by technology

[0006] In order to solve the problems of insufficient spectrum resources and high energy consumption in the traditional spectrum resource allocation method, the present invention provides a communication method based on a HARQ-assisted multi-RIS system, which aims to improve spectrum efficiency and reduce outage probability

Method used

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  • Communication method for assisting multi-RIS system based on HARQ
  • Communication method for assisting multi-RIS system based on HARQ
  • Communication method for assisting multi-RIS system based on HARQ

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Embodiment 1

[0060] Reconfigurable Smart Surface (RIS), as a hardware technology that can effectively improve the performance of communication systems with low power consumption in recent years, has been regarded as a potential technology beyond 5G, and is considered to be the basis for designing spectrum- and energy-efficient wireless communication systems. A promising solution. The traditional method of extending the communication range mainly relies on the relay. When the power of the base station is insufficient, the signal is forwarded to the remote link through the relay. However, the relay has the disadvantage of amplifying noise or prolonging the time due to high decoding complexity. Compared with the traditional way, the path loss is relatively small through the reconfigurable smart surface to reflect the signal, and it will not reflect noise and low delay. Since there are always many obstacles in the city due to factors such as terrain and buildings, these will have a great impac...

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Abstract

The invention discloses a communication method based on a hybrid automatic repeat request (HARQ) assisted multi-RIS system. The communication method comprises the following steps: S1, designing a signal transmission model of a hybrid automatic repeat request technology assisted reconfigurable intelligent surface; S2, deducing the outage probability of a signal transmission model according to the probability of an event of which the mutual information accumulated at the receiving node is smaller than the transmission rate R; S3, analyzing phase shift optimization, modulation and coding gain and diversity order by utilizing the progressive behavior of the outage probability under a high signal-to-noise ratio and through a progressive result; and S4, performing wireless resource configuration by using the analysis result obtained in the S3. According to the method, the influence of setting of related parameters of the system on the interruption performance is analyzed by using the result obtained in the step S3, so that wireless resource configuration is better carried out, and reliable transmission is ensured while the spectrum efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a communication method based on a HARQ-assisted multi-RIS system. Background technique [0002] With the rapid increase of wireless communication services in recent years, the limited spectrum resources are becoming more and more tense, and the explosive growth of global wireless data traffic has also accelerated the energy consumption of wireless networks. is no longer applicable. Therefore, frequency spectrum and energy-efficient design have attracted extensive discussions. Reconfigurable Smart Surface (RIS), as a recent effective hardware technology to improve spectral efficiency with lower power consumption, has been regarded as a potential technology beyond 5G, and is considered to be the basis for designing spectrum- and energy-efficient wireless communication systems. A promising solution that is gaining more and more attention. Specifica...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W16/22
CPCH04L1/1812H04W16/22
Inventor 曹琦龙云亮
Owner SUN YAT SEN UNIV
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