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Throughput optimization method of backscatter communication network based on transmission fairness

A technology of backscattering and communication network, which is applied in the field of throughput optimization based on transmission fairness of wireless power supply backscattering communication network, and can solve problems such as unfair transmission

Pending Publication Date: 2021-03-26
南京爱而赢科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect of unfair transmission among users with different throughputs of the backscatter communication network in the prior art, and provide a throughput optimization method based on transmission fairness of the backscatter communication network

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  • Throughput optimization method of backscatter communication network based on transmission fairness
  • Throughput optimization method of backscatter communication network based on transmission fairness
  • Throughput optimization method of backscatter communication network based on transmission fairness

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Embodiment

[0046] A throughput optimization method based on transmission fairness for a wireless power backscatter communication network, the system model diagram is as follows figure 1 shown. The system includes a full-duplex access point (Full-Duplex Access Point, FAP) and K wireless devices. FAP has a fixed energy supply, works in full-duplex mode through continuous interference cancellation technology, and can broadcast RF signals and receive information from wireless devices at the same time. Each wireless device has no energy by itself and needs to obtain energy from the outside, and contains two modules, BC and HTT, which can perform backscattering when other wireless devices obtain energy. Such wireless devices use the symbol WD i , i=1, 2,..., K represents. Define the channel power gain from the wireless device to the FAP as H i and G i , i=1,2,...,K, and assume H i and G i Both are flat fading and can remain stable throughout the time block. At the same time, it is assu...

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Abstract

The invention discloses a throughput optimization method of a wireless power supply backscatter communication network based on transmission fairness, in the method, all wireless devices comprise BC and HTT modules, and other wireless devices can obtain energy during backscatter of a wireless device WDi so as to improve the throughput of the wireless power supply backscatter communication network.Backscattering and information transmission are allocated to two different time slots in a time division multiple access mode, the whole time block is fully utilized to reflect / transmit information, and the throughput of the system is effectively improved. The FAP of the system works in a full duplex mode and can receive information and radiate RF signals at the same time. According to the method,a throughput optimization problem based on transmission fairness is defined, and an effective algorithm is proposed to obtain optimal time allocation. Through back scattering more time for remote wireless equipment, the information transmission time of near wireless equipment is reduced, so that the wireless equipment in different channel states can obtain equal throughput. A simulation result verifies that the proposed scheme can achieve higher throughput under the condition of fair transmission.

Description

technical field [0001] The invention relates to a method in the technical field of wireless power supply communication, in particular to a method for optimizing throughput of a wireless power supply backscatter communication network based on transmission fairness. Background technique [0002] With the rapid development of Internet of Things (IoT) and the proposal of green communication, Wireless Powered Communication Networks (WPCN) has attracted great attention from academia and industry. In recent years, the improvement of communication quality, the increase of various wireless devices and the increasing complexity of signal processing algorithms have made wireless communication networks (such as Wireless Sensor Networks (WSNs) and cellular networks, etc.) generate higher power grid energy. consumption and green gas emissions. The proposal of radio frequency (Radio Frequency, RF) energy harvesting technology in WPCN can replace the traditional battery power supply and wi...

Claims

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Application Information

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IPC IPC(8): H04B7/22H04L5/14H04W24/06H04W72/04H02J50/00H02J50/20
CPCH04B7/22H04L5/1469H04W24/06H04W72/0446H02J50/00H02J50/001H02J50/20Y02D30/70
Inventor 徐友云李大鹏蒋锐
Owner 南京爱而赢科技有限公司
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