Adaptive dormancy method of network data chain circuit layer of cluster structured radio sensor

A wireless sensor and network data technology, applied in the direction of data exchange network, transmission system, digital transmission system, etc.

Inactive Publication Date: 2006-06-28
PLA UNIV OF SCI & TECH
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Problems solved by technology

Since the problem of node energy supply has not been well solved, the node itself cannot replenish energy or replenish insufficient energy, so the wireless sensor network needs to con

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  • Adaptive dormancy method of network data chain circuit layer of cluster structured radio sensor
  • Adaptive dormancy method of network data chain circuit layer of cluster structured radio sensor
  • Adaptive dormancy method of network data chain circuit layer of cluster structured radio sensor

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Embodiment Construction

[0052] An adaptive dormancy method for the data link layer of a clustered wireless sensor network, in which the cluster head and the wireless communication equipment of the sink node in the clustered wireless sensor network are turned on, so that they are in the state of sending or listening, while ordinary nodes in the cluster do not When the data frame needs to be sent and received, the wireless communication device can be turned off and enter the dormant state. The carrier sense multiple access mode with conflict avoidance is adopted between the cluster head and the common node. The carrier sense multiple access mode with conflict avoidance is:

[0053] 1) There must be an interframe space between frames on the physical medium, which is determined by the attributes of the physical layer; the frame using SIFS (shortest interframe space) in IEEE 802.11 has the highest priority and is used for services that require immediate response, such as ACK (response) frame, CTS (allow to...

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Abstract

This invention discloses an adaptive dormancy method for a separated cluster structure radio sensor network data link layer, which starts up the head in network and radio communication devices for collecting nodes to initiate them at the sending or intercepting state, if no data frames are sent or received by the ordinary nodes in the cluster, the device can be turned off to enter into the dormancy state and a carrier intercepting multipath access mode avoiding conflict is applied between the head and ordinary nodes, which puts forward a system that nodes alter the time of dormancy adaptively along with dortmancy times based on binary index and a system of sending cluster head transmission instruction chart management frames periodically by cluster heads, so the radio sensor network can work under single channels asynchronously to ease up the collide and re-tansmission of nodes in the synchronous mode and too many synchronous control signalings.

Description

technical field [0001] The invention relates to the data link layer technology of the wireless network, in particular to the energy-saving mechanism of the data link layer in the cluster structure wireless sensor network. Background technique [0002] Wireless sensor network (WSN) integrates sensor technology, embedded computing technology, distributed information processing technology and wireless communication technology, and has broad application prospects in military reconnaissance, environmental science, medical and health, industrial automation, and commercial applications. Since the problem of node energy supply has not been well solved, the nodes themselves cannot replenish energy or replenish insufficient energy, so wireless sensor networks need to consider energy saving first, followed by scalability, and finally network efficiency, such as network fairness, Real-time performance, network throughput and bandwidth utilization, etc. The energy waste of the data link...

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Application Information

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IPC IPC(8): H04L12/413
Inventor 朱赟徐友云蔡跃明
Owner PLA UNIV OF SCI & TECH
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