Joint resource allocation method of cognitive relay wireless sensor network

A wireless sensor and cognitive relay technology, applied in wireless communication, network topology, power management, etc., can solve the problems of unoptimized power split ratio, power and subcarrier allocation, etc.

Active Publication Date: 2019-11-29
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the currently available materials, there is still no precedent for simultaneously optimizing the power split ratio, power and subcarrier allocation in the resource allocation of energy harvesting cognitive sensor networks

Method used

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  • Joint resource allocation method of cognitive relay wireless sensor network
  • Joint resource allocation method of cognitive relay wireless sensor network
  • Joint resource allocation method of cognitive relay wireless sensor network

Examples

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Embodiment

[0049] Examples of the present invention figure 1 As shown, a joint resource allocation method of a cognitive relay wireless sensor network based on SWIPT is realized by the following cognitive relay wireless sensor system: the system includes a main system and a sensor subsystem, and the main system includes a main transmitter PT and a main receiver PR, the sensor subsystem includes M sensor nodes SN m And a cluster head node CH, where the set of sensor nodes is represented by V={1,2,...,M}, m∈V represents the mth sensor node; the communication between the main transmitter and the main receiver must go through The relay of the sensor subsystem adopts the method of decoding and forwarding; the sensor node uses the simultaneous wireless information and power transmission (SWIPT technology), after receiving the signal from the main transmitter, the sensor node will divide the power according to a certain ratio Divide the received signal into two signal streams with different po...

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Abstract

The invention discloses a joint resource allocation method of a cognitive relay wireless sensor network, and belongs to the technical field of wireless communication. In the cognitive relay wireless sensor network based on the SWIPT, a sensor subsystem collects energy from a main user signal, and at the same time, the use right of a part of authorized frequency spectrum is exchanged by helping toforward the main user signal so as to transmit a signal of the sensor subsystem. According to the resource allocation method, the power division ratio, the transmitting power allocation and the subcarrier allocation of the sensor nodes are subjected to joint optimization allocation, so that the purpose of maximizing the throughput of the sensor subsystem is achieved, and meanwhile, the target raterequirement of the main system is also considered. The method has the advantages that the throughput of the sensor subsystem can be maximized by reasonably utilizing the energy collected by the sensor nodes and reasonably deploying the subcarriers, so that the system performance is improved.

Description

technical field [0001] The invention relates to a joint resource allocation method for a cognitive relay wireless sensor network, specifically a SWIPT-based joint resource allocation method for a cognitive relay wireless sensor network, and belongs to the technical field of wireless communication. Background technique [0002] With the advent of the 5G era, wireless sensor networks (WSNs) have broad application prospects in the Internet of Things and other fields due to their low power consumption, low cost, and self-organization. Usually, traditional wireless sensor networks work in the ISM (Industrial, Scientific, and Medical) frequency band, which is becoming more and more crowded due to the rapid development of wireless devices and services. [0003] By introducing cognitive radio (CR) technology into wireless sensor networks, constructing a cognitive wireless sensor network (CRSN) helps to solve the above-mentioned spectrum shortage problem. In cognitive wireless senso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04W52/26H04W52/34H04W52/46H04W84/18
CPCH04W72/0473H04W72/0453H04W52/265H04W52/267H04W52/346H04W52/46H04W84/18H04W72/543H04W72/542
Inventor 马丕明韩文聪马艳波
Owner SHANDONG UNIV
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