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Wireless sensor network, establishing method and communication method

A wireless sensor and network technology, applied in data exchange networks, transmission systems, digital transmission systems, etc., can solve problems such as packet forwarding data transmission bottlenecks, large data traffic, and unbalanced data transmission affecting network performance.

Inactive Publication Date: 2008-08-20
毛宏伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the typical application of WSN network, the data is concentrated from the network to the sink node (SinkNode), and the closer to the SinkNode node, the greater the data flow, which causes the bottleneck of packet forwarding data transmission, and the unbalanced transmission of data affects the network performance.
Also, after the network is deployed, some specific applications hope to adjust the network node communication scheduling according to the demand, but the existing network scheduling mechanism often cannot be changed.

Method used

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  • Wireless sensor network, establishing method and communication method
  • Wireless sensor network, establishing method and communication method
  • Wireless sensor network, establishing method and communication method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0186] Embodiment 1, a kind of wireless sensor network, such as figure 1 as shown,

[0187] The nodes that can be directly connected to each other in the network form a cluster. Each cluster network adopts the principle of energy optimization, and regularly selects a node as the cluster head node. The cluster head node is responsible for confirming the network topology changes of the cluster network, updating and publishing the cluster network communication schedule exchange. Nodes 1, 6, 8, and 10 in the figure are respectively the current cluster head nodes of cluster networks A, B, C, and D.

[0188] The cluster head node selects the node in its cluster network that can connect with the adjacent cluster network as the border switching node of its cluster network. Communication between adjacent cluster networks can only be performed through border switching nodes. As shown in the figure, a node in cluster network A needs to communicate with a node in cluster network C, whi...

Embodiment 2

[0197] Embodiment 2, a method for establishing a wireless sensor network.

[0198] Such as figure 2 As shown, in the wireless sensor network establishment method, the processing steps of the cluster network for discovering a new node activation message.

[0199] Step 201 , during the GEC working period, the cluster network node listens to whether there is a new node activation message on the new node activation channel, and records the listening result. When the GIC communication works, the time division multiplexing of the cluster nodes occupies the working channel of the cluster network, and reports to its cluster head node that a new node is activated.

[0200] In step 202, the cluster head node receives reports from other cluster nodes about discovering the activation of new nodes, and checks whether all nodes in the cluster network have discovered the activation information of the new nodes.

[0201] If yes, go to step 203.

[0202] Otherwise, go to step 206 .

[020...

Embodiment 3

[0212] Embodiment 3, in a method for establishing a wireless sensor network, the processing steps for a new node to determine the mode of joining a cluster network. Such as image 3 , 4 as shown,

[0213] In step 301, after the network node is reset and initialized, a new node joins the network process.

[0214] In step 302, the new node listens to the system predefined new node activation channel (srdSnActiveChannel) and the system backup new node activation channel (srdSnActiveBakChannel) in turn to check whether there is an idle channel.

[0215] If yes, go to step 304.

[0216] Otherwise, go to step 303.

[0217] In step 303, the new node determines that the operation of joining the network cannot be performed at present, and the new node enters a sleep state, wakes up after a system-defined sleep time (srdSnActiveSleep), and executes step 302 again.

[0218] Step 304, the new node marks the currently available new node activation channel, and publishes a new node act...

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Abstract

The invention discloses a wireless sensor network and constructing method and communication method capable of self-adapting the web knot according to network structure variation, and variation of service data transferring demand and variation of network management command. The wireless sensor network is isomorphism grouping network structure of node cluster management. Make the knobs which can directly communicate into a cluster, constructing a topological structure of cluster network linking. The communication dispatching of the network nodes can be divided into intra-cluster nodes communication dispatching and inter-cluster nodes communication dispatching. According to the network structure design, set the intra-cluster network nodes constructing cluster network work periods. A cluster network working period comprises cluster resting period, inter-cluster interchanging nodes communicating work period and intra-cluster nodes communication work period. The network nodes is used for self-adapting each working period and the communication time of cluster nodes of each working period, and communication time width to reach the network optimization.

Description

technical field [0001] The invention relates to a wireless sensor network, an establishment method and a communication method, in particular to a wireless sensor network, an establishment method and a communication method for adaptively adjusting network node communication scheduling. Background technique [0002] Wireless Sensor Network (WSN) is one of the current research hotspots in information technology. Its basic idea is to deploy thousands of low-power and low-cost sensor nodes to the application site and form an ad hoc network through wireless channels. Complete the collection, transmission and processing of information in the network. This new network structure has very broad application prospects in the fields of environmental monitoring, logistics management, industrial sensing, and military affairs. The WSN network has new features such as simple nodes, wide implementation environment, and diversity of application fields. The research focus and design schemes of...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/28H04L45/16
Inventor 毛宏伟
Owner 毛宏伟
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