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Wireless sensing network communication scheduling method combined by division cluster and Mesh

A wireless sensor network and communication scheduling technology, applied in the field of wireless communication, can solve problems such as network connectivity impact, intra-cluster communication interference, etc., to achieve the effect of solving intra-cluster communication interference and solving excessive idle listening of nodes

Inactive Publication Date: 2008-08-27
JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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AI Technical Summary

Problems solved by technology

[0006] The high-power inter-cluster communication of backbone nodes will interfere with intra-cluster communication; the sleep of nodes will have a negative impact on network connectivity

Method used

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  • Wireless sensing network communication scheduling method combined by division cluster and Mesh
  • Wireless sensing network communication scheduling method combined by division cluster and Mesh
  • Wireless sensing network communication scheduling method combined by division cluster and Mesh

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Embodiment Construction

[0016] The main idea of ​​this communication scheduling method is that, in terms of intra-cluster communication, after the upper node forms a scheduling cycle, it notifies the lower node in the form of periodic broadcast Beacon frames, so that the lower node can join the cluster formed by the upper node and maintain clock synchronization with the upper node ; In terms of inter-cluster communication, the backbone nodes are responsible for routing establishment and inter-cluster data transmission.

[0017] The wireless sensor network consists of backbone nodes (BB), cluster head nodes (CH) and cluster member nodes (CM). Among them, there is a Mesh structure between BBs, and a clustering structure between BBs and CHs and CMs.

[0018] The node organizes the communication scheduling with the superframe as the cycle. Each node in the network forms its own superframe, including the following steps:

[0019] 1. Form BB node superframe: BB node forms its own superframe, and periodic...

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Abstract

The invention discloses a Mesh and clustering combination-based wireless sensing network channel scheduling method. Each node point carries out respective task dispatching periodically in the network, and the communication among the node points is realized. The channel scheduling method adopts the main concept that in intra-cluster communication, after a dispatching cycle of a upper layer node point is formed, a lower layer node point can be informed in a periodic broadcast Beacon frame form, so that the lower layer node point is added into the clusters established by the upper layer node point and to maintain the clock synchronization of the upper node point; in inter-cluster communication, backbone nodes takes charge of route setup and inter-cluster data transmission. The channel scheduling method effectively solves the problems that the interference of the intra-cluster high power communication to the inter-cluster communication and the excessive idle listening of the node point through the division of the intra-cluster communication time interval and the introduction of the sleeping mechanism of the node point. The channel scheduling method provided by the invention is suitable for a certain part of typical wireless sensing network utilization, and simultaneously can be used as an expanding basis for other wireless sensing network.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a communication scheduling method for a wireless sensor network. Background technique [0002] Wireless sensor network is an emerging frontier research hotspot that has attracted much attention in the world and is highly crossed by multiple disciplines. Wireless sensor networks have very broad application prospects, and have important scientific research value and great practical value in many fields such as military defense, industry and agriculture, urban management, biomedicine, environmental monitoring, emergency rescue, and remote control in dangerous areas. The military, academic and industrial circles of many countries in the world attach great importance to it, and it is considered to be one of the technologies that will have a huge impact on the 21st century, and it will have a profound impact on the way of life of human beings in the future. [0003] Many studies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/28H04L7/00H04W72/12
Inventor 邓瀚林沈杰黄河清姚道远刘海涛
Owner JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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