Multistage distribution method of channel resources of wireless sensor network

A wireless sensor and distribution method technology, applied in wireless communication, network topology, synchronization device and other directions, can solve the problems of large amount of monitoring data, slow data transmission, and high transmission delay, and achieve low computational complexity and low data transmission delay. Guaranteed, easy to expand effect

Inactive Publication Date: 2012-10-24
CHONGQING UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency, low-overhead, and easy-to-expand method for multi-level allocation of channel resources in wireless sensor netw...

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  • Multistage distribution method of channel resources of wireless sensor network
  • Multistage distribution method of channel resources of wireless sensor network
  • Multistage distribution method of channel resources of wireless sensor network

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with drawings and embodiments.

[0027] A multi-level allocation method for wireless sensor network channel resources, including a clustering tree topology network composed of cluster head nodes and sub-nodes. The channel allocation method for the cluster head nodes and sub-nodes is a TDMA-based allocation method. The sub-nodes in each cluster It can only communicate with the cluster head node of the cluster. The channel resource allocation method is: the cluster head node allocates time slots for its subordinate child nodes to upload data, and the super frame period of the lower cluster in the network is the super frame of the upper cluster N times the period, N≥2, the start time of the superframe of the lower cluster is synchronized with the start time of the superframe of the upper cluster.

[0028] When the cluster head node communicates with the upper-level cluster head node, the current cluster h...

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Abstract

The invention relates to a multistage distribution method of channel resources of a wireless sensor network. The wireless sensor network comprises a cluster tree topology network consisting of a cluster head nodes and sub-nodes, wherein a channel distribution mode of the cluster head nodes and the sub-nodes is a distribution method based on TDMA (Time Division Multiple Address), and the sub-nodes in each cluster can be communicated with the cluster head node of the cluster only. The channel resource distribution method comprises the following step of: distributing time slots for subordinate sub-nodes by the cluster head nodes for uploading data, wherein the superframe period of a lower level cluster in the network is as long as N times of the superframe period of an upper lever cluster, N is larger than or equal to 2, and the superframe beginning time of the lower level cluster is synchronous with the superframe beginning time of the upper level cluster. According to the multistage distribution method of the channel resources of the wireless sensor network, the problems of low data transmission speed and high transmission delay caused by a large monitoring data volume in a monitoring system based on the wireless sensor network can be solved.

Description

technical field [0001] The invention relates to a channel resource allocation method, in particular to a channel multi-level allocation method for a wireless sensor network. Background technique [0002] With the development of mechanical equipment and the progress of corresponding monitoring technology, there has been an application technology that applies emerging wireless sensor networks to the field of mechanical vibration monitoring. However, due to the large amount of data, low delay requirements, and high time synchronization requirements faced by the mechanical vibration monitoring system, the current wireless sensor network bandwidth and bandwidth allocation technology are difficult to meet its requirements. Under the condition that the network bandwidth is limited by the physical characteristics of the wireless transceiver chip, it still has considerable practical value to improve the utilization efficiency and communication success rate of the wireless transceiver...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04W72/04H04W74/08H04W84/18
Inventor 汤宝平邓蕾黄庆卿阮啟东
Owner CHONGQING UNIV
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