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MAC protocol communication method and device for synchronous wireless sensor network

A wireless sensor and protocol communication technology, applied in wireless network protocol, wireless communication, electrical components, etc., can solve the problem of high energy consumption of MAC protocol, and achieve the effects of saving energy consumption, simple implementation, and reducing control overhead

Inactive Publication Date: 2015-01-21
HENAN UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a MAC protocol communication method and device for a synchronous wireless sensor network to solve the problem of large energy consumption in the multi-hop transmission of the existing MAC protocol

Method used

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  • MAC protocol communication method and device for synchronous wireless sensor network
  • MAC protocol communication method and device for synchronous wireless sensor network
  • MAC protocol communication method and device for synchronous wireless sensor network

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] Such as figure 1 , 2 It is a schematic flow chart of the working process of the present invention; figure 2 It is the node timing diagram of the life cycle of the node, including the initialization period and a cycle, and the cycle after that is omitted. The invention is an improvement based on the MAC protocol, and the node adopts a periodic scheduling working mode in the lifetime. A cycle includes a synchronization period, a busy tone listening / sending period, a channel reservation period, and a sleep period, which will be described in detail below.

[0041] initialization:

[0042] 1.1 After the network is deployed, the SINK node sends a start activation message StartActive, and uses the flooding protocol to deliver the message to all nodes in the network. The StartActive message includes a jump distance field Hop, start working time t start ...

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Abstract

The invention relates to a MAC protocol communication method and device for a synchronous wireless sensor network. According to the method, by utilizing a periodic scheduling work mode in the node life period, each cycle period of a node is divided into synchronization time period, busy tone monitoring / sending time period, channel appointment time period and sleep time period, so that the node is allowed to carry out different operation in each time period according to the partial monitoring results; node leisure monitoring time is reduced; data multihop appointment continuous transmission in a cycle period is realized; requirement for data sending timeliness is adapted to; node period monitoring / sleeping duty ratio changes dynamically with the change of the service; node energy consumption is greatly saved; and meanwhile, through relay node selection in the channel appointment time period, channel appointment and route selection are combined together, and thus control overhead is reduced and the realization is simple.

Description

technical field [0001] The invention relates to a MAC protocol communication method for a synchronous wireless sensor network, belonging to the field of wireless sensor networks. Background technique [0002] Since wireless sensor networks are powered by batteries, the lifetime of the network is limited by energy. In order to save energy, the MAC protocol of wireless sensor network usually adopts the mechanism of periodic listening / sleep to save energy. Such protocols include SMAC, TMAC, PMAC, ASMAC, RMAC, etc. SMAC, TMAC, and PMAC protocols usually operate in a cycle Data can only be transmitted for one hop, and the adaptive ASMAC protocol can be transmitted for at most two hops, but it uses crosstalk monitoring and awakening of all neighboring nodes to increase the energy consumption of the network. Therefore, this kind of protocol causes intermittent data transmission process, which makes the multi-hop delay of data transmission large, and is not suitable for wireless se...

Claims

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Application Information

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IPC IPC(8): H04W74/02H04W80/02
CPCH04W74/02H04W80/02
Inventor 郑国强李济顺亢丙午李佩佩孙亚茹冀保峰马华红祁志娟
Owner HENAN UNIV OF SCI & TECH
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