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Multi-mobile sink access control method in wireless sensor network

A technology of wireless sensor network and control method, applied in the directions of access restriction, wireless communication, network topology, etc., can solve problems such as network overhead, reduce network throughput and energy efficiency, achieve network overhead reduction, easy implementation, The effect of simple realization

Inactive Publication Date: 2010-09-08
江苏中科泛联物联网科技股份有限公司
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  • Abstract
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Problems solved by technology

[0005] The present invention aims to overcome the defect that when the mobile sink density is high, it will cause unnecessary overhead to the network, reduce the network throughput and energy efficiency, and solve the problem of how to perform sink according to different service quality requirements. The problem with access control

Method used

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Embodiment Construction

[0020] The invention makes simple and easy-to-implement improvements to the existing multi-mobile sink wireless sensor network. In the existing wireless sensor network with multiple mobile sinks, in order to enable the sensing data to be effectively transmitted to the sink nodes, each sink node needs to follow a fixed frequency hello_frequency (such as Hertz, that is, once every 3 seconds) broadcast the hello control packet to inform the neighbor sensor nodes of their own existence. The broadcast frequency of the hello packet in the present invention can be adjusted dynamically, and a new information bit is added in the packet. At the same time, in the present invention, the sensor node does not need to relay the hello packet received from the mobile sink. The present invention assumes that all mobile sinks use the same power to send hello packets.

[0021] 1. A multi-mobile sink sensor network access control method for single quality of service

[0022] This approach fo...

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Abstract

The invention discloses a multi-mobile sink access control method in a wireless sensor network. The control method can provide a single service quality for all mobile sinks; each sink node monitors hello packets broadcasted by other sinks around, periodically calculates the number of the mobile sink nodes for broadcasting the hello messages in the communication range Rs of each sink node and determines whether the packet is controlled in the broadcasting of the next period per se or the probability for keeping silence according to the number or dynamically adjusts the hello broadcast frequency per se; and in addition, the control method can provide different service qualities for the different mobile sinks. The control method can flexibly meet the requirements of different service qualities, reduce the number of the packets under control while guaranteeing the data acquisition, effectively reduce the network expenditure and have the characteristics of simpleness and easy realization in the actual wireless sensor network.

Description

technical field [0001] The invention relates to a wireless sensor network protocol, in particular to a multi-mobile sink node access control method in a wireless sensor network (also called a wireless sensor network). Background technique [0002] A wireless sensor network is a wireless network composed of a group of randomly distributed tiny nodes integrated with sensors, data processing units and communication units through self-organization. Its purpose is to cooperatively perceive, collect and process the information of the perceived objects in the geographical area covered by the network, and publish it to the observers. The sink node is a data collection node, which is responsible for summarizing the data sent by the sensor nodes in the network. It is also the control node of the entire sensor network and manages other sensor nodes in the network. [0003] There are many deficiencies in the traditional wireless sensor network deployment method using fixed sink nodes, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/24H04W48/00H04W84/18
Inventor 赵壮
Owner 江苏中科泛联物联网科技股份有限公司
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