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Method for reducing redundant routing packet in tree ZigBee network

A technology for routing packets and networks, applied in advanced technologies, electrical components, climate sustainability, etc., can solve the problems of reducing the life cycle of network nodes, rapid energy consumption of network nodes, and redundant network overhead, etc., and achieves packet header files. Improve, reduce network overhead, prolong the effect of survival time

Inactive Publication Date: 2011-08-03
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

In the actual route establishment process, the number of times the source node finds the RREQ packets sent by the target node is usually far less than 2 times the maximum hop count. redundant network overhead
And the larger the network scale, the denser the distribution of network nodes, the more redundant network overhead will be generated, which will lead to rapid energy consumption of network nodes and reduce the life cycle of network nodes

Method used

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  • Method for reducing redundant routing packet in tree ZigBee network
  • Method for reducing redundant routing packet in tree ZigBee network
  • Method for reducing redundant routing packet in tree ZigBee network

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention is not limited to the scope described in the embodiments.

[0032] Follow the steps below to create a figure 1 The tree-shaped ZigBee wireless sensor network is shown, and the network address of the coordinator is set to 0, and other nodes (routers and terminals) are also marked with corresponding numbers (1~8, 20~22, 43~50, 56, 62 ~65).

[0033] The method for reducing redundant routing packets in the tree type ZigBee network, the concrete steps are as follows:

[0034] Step (1) All nodes in the tree-shaped ZigBee network except the root coordinator calculate their own isolation according to the following formula,

[0035] Cskip(d)=

[0036] In the tree-type ZigBee network, the parent node has at most the number of child nodes Cm=5, the maximum network depth is Lm=3, the maximum number of child nodes of...

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Abstract

The invention discloses a method for reducing redundant routing packet in a tree ZigBee network. The method comprises the steps of: according to node distribution in the tree ZigBee network, computing the network address of a node through the node position and the network depth of the tree ZigBee network; judging whether a destination node to which data from a source node is transmitted is a father node or a son node or neither a father node nor a son node of the source node; limiting the routing request (RREQ)-grouped transmission range with a routing inquiring function according to a judgment result; and reducing the forwarding times of the redundant routing packet. By adopting a node position judging mechanism, the method is flexible, reduces the forwarding times of the redundant routing packet in the tree ZigBee network greatly on the premise of guaranteeing the smooth network communication and reduces the routing expenditure of the whole network, thereby reducing power consumption of the node and prolonging the survival time of the node.

Description

technical field [0001] The invention relates to a routing technology based on a location judgment mechanism in a ZigBee tree network, in particular to a method for reducing redundant routing packets in a tree ZigBee network. Background technique [0002] As a new short-distance wireless communication technology, ZigBee has been widely used in various fields. However, because ZigBee technology appeared late, its specifications and applications are still being perfected and developed. Therefore, the research on the application expansion, improvement and optimization of ZigBee network routing algorithms has become a hot spot at present. ZigBee routing algorithm is composed of Cluster-Tree algorithm and AODVjr algorithm. [0003] Cluster-Tree algorithm: The Cluster Tree (cluster-tree) routing algorithm is closely related to the distributed address allocation network address algorithm adopted by the ZigBee routing layer. This address allocation scheme allocates a limited network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02
CPCY02D30/70
Inventor 胡斌杰吴凡
Owner SOUTH CHINA UNIV OF TECH
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