Energy supply method in combination with online and offline scheduling in WRSN

An energy supply and energy technology, applied in wireless communication, energy consumption reduction, services based on specific environments, etc., can solve problems such as large amount of calculation, high complexity of information and online scheduling, and inability of real-time feedback of nodes to be charged, etc. The effect of shortened paths, improved energy use efficiency

Inactive Publication Date: 2021-01-15
GUANGXI NORMAL UNIV
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Problems solved by technology

[0009] In order to solve the problems that the nodes to be charged cannot feed back information in real time in offline scheduling and the high com

Method used

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  • Energy supply method in combination with online and offline scheduling in WRSN
  • Energy supply method in combination with online and offline scheduling in WRSN

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Embodiment

[0034] In this example, the charging service process of the sensor node is considered to be divided into time slices, and the duration of a single time slice is recorded as T, which is also called a service cycle of the charging car. The charging car chooses a node within a service cycle to charge each time. Avoid the situation that the node that submits the charging request first will run out of energy due to waiting too long, and at the same time, it can also ensure the fairness of each node that submits the charging request at the same time. All nodes can be arranged to charge in the same service cycle. Some nodes will be charged first and some nodes will be charged later.

[0035] While receiving the charging request in the service period t online, the base station also plans the charging strategy offline for the nodes to be charged in the service period t-1. In the service period t, the charging request arriving at the base station in the area area is stored in the block ...

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Abstract

The invention discloses an energy supply method (E2RHS) in combination with online and offline scheduling in WRSN. The method comprises the following steps: 1, determining zones; 2, clustering, and setting an energy alarm threshold value; 3, storing a charging request; 4, constructing a shortest charging path; 5, calculating two times of a to-be-charged node; 6, comparing the two times of the to-be-charged node; and 7, obtaining an optimal charging path. E2RHS plans a charging path of a charging vehicle in combination with online and offline scheduling, carries out online calculation between base stations through charging request information submitted by the to-be-charged node, the to-be-charged node send the current energy consumption rates and residual energy of the to-be-charged node tothe base stations, and the base stations can cope with the situation that the energy consumption rates of the nodes in the network dynamically change; and meanwhile, the base stations plan the charging sequence of the nodes in the to-be-served queue offline, and determines the charging path of the charging vehicle. According to the method, the survival rate of the nodes in the network and the energy use efficiency of the charging vehicle are maximized, and the charging cost is reduced.

Description

technical field [0001] The invention relates to a node energy supply technology in a wireless rechargeable sensor network in the field of wireless sensor networks, in particular to an energy supply method for joint online and offline scheduling in a WRSN. Background technique [0002] Wireless sensor network is an ad hoc network composed of a large number of sensor nodes, its main function is to perceive, collect, process and transmit object information within the network coverage. Sensor nodes are usually powered by batteries, the energy is limited and the batteries are difficult to replace, which greatly restricts the popularization and application of wireless sensor networks. In recent years, the breakthrough of Wireless Power Transfer (WPT) technology has made the Wireless Rechargeable Sensor Network (WRSN) gradually become a reality from concept. In WRSN, the sensor nodes are equipped with energy receivers, and the network is equipped with one or more charging vehicles...

Claims

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Application Information

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IPC IPC(8): H04W4/38H04W40/04H04W40/10H04W40/24H04W52/24
CPCH04W4/38H04W40/10H04W40/04H04W40/24H04W52/246Y02D30/70
Inventor 覃少华赵鑫陆鹏
Owner GUANGXI NORMAL UNIV
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