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Cross-layer wireless sensor network MAC protocol communication method and system

A wireless sensor and protocol communication technology, applied in wireless network protocol, wireless communication, network topology, etc., can solve the problems of delivery time delay and network control overhead, etc., and achieve the requirements of reducing data transmission waiting time delay and synchronization, and realizing simple effect

Inactive Publication Date: 2014-02-19
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a cross-layer wireless sensor network MAC protocol communication method and system to solve the problem of different degrees of delivery delay in the MAC protocol based on the duty cycle mechanism and the need for an independent routing protocol to support data transmission. The problem of high network control overhead

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  • Cross-layer wireless sensor network MAC protocol communication method and system
  • Cross-layer wireless sensor network MAC protocol communication method and system
  • Cross-layer wireless sensor network MAC protocol communication method and system

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Embodiment Construction

[0032] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033]A class of SMAC protocols proposed for the characteristics of wireless sensor networks uses the periodic listening / sleep mechanism to divide network nodes into different virtual clusters, and adopts the RTS / CTS / DATA / ACK data exchange mechanism of IEEE802.11 and the multi-hop method Realize data transmission with the upper layer routing protocol. For SMAC protocols, since nodes in different clusters have different synchronous wake-up times, the waiting delay for each hop of data transmission has greater uncertainty; SMAC protocols also need to maintain the scheduling table and routing table of neighboring nodes, Multi-hop delivery must be supported by upper-layer routing protocols, so the storage capacity of nodes is high and the control overhead is high. In order to solve the above problems, the present invention provides a cross-laye...

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Abstract

The invention relates to a cross-layer wireless sensor network MAC protocol communication method and system and belongs to the technical field of wireless sensor networks. A network is divided into zones of different classes according to different skip distances between nodes and SINK nodes. A working manner that periodic scheduling is performed on nodes in all regions is adopted and each period is divided into a periodic data receiving time frame, a periodic data transmitting time frame and a periodic sleep time frame. Periodic scheduling of nodes of adjacent zones is set in a staggered mode and data are transmitted to nodes at the low class until the SINK nodes. The requirement for synchronization of the network nodes is lowered and waiting time delay of data transmission of each skip is reduced. The class of the nodes is used for selecting receiving nodes in the data transmission process and an MAC and a router of data transmission are combined together. Thus, support of an upper-layer routing protocol is not needed, control expenses are reduced and the cross-layer wireless sensor network MAC protocol communication method and system are easy to achieve.

Description

technical field [0001] The invention relates to a cross-layer wireless sensor network MAC protocol communication method and system, belonging to the technical field of wireless sensor networks. Background technique [0002] The lifetime of wireless sensor networks is limited by the lifetime of battery-powered nodes. Therefore, under the premise of considering the application requirements of wireless sensor networks, energy efficiency is the primary consideration in the design of wireless sensor networks, involving all protocol layers. The MAC protocol of the wireless sensor network is in the bottom part of the wireless sensor network protocol. It determines the use of wireless channels and directly affects important performances such as wireless resource utilization efficiency, network throughput, and delay. It is a key network to ensure efficient communication in wireless sensor networks. one of the agreements. [0003] The limited energy of wireless sensor networks determ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04W40/24H04W56/00H04W80/02H04W84/18
Inventor 郑国强李济顺亢丙午李冰侯云山祁志娟徐素莉陈建华刘伟高宏峰沈森王斐
Owner HENAN UNIV OF SCI & TECH
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