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Inter-cluster quick communication method for wireless sensor network

A wireless sensor and fast communication technology, applied in wireless sensor network protocol design, wireless network field, can solve problems such as heavy data load, affecting network communication performance, etc., achieve the effect of solving time deviation, improving transmission efficiency, and avoiding serious backlog problems

Inactive Publication Date: 2012-09-19
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the data collected by the nodes in the cluster is sent to the cluster head node of the cluster, the data load on the cluster head node is very heavy, and the data packets are backlogged at the cluster head, which seriously affects the communication performance of the network.

Method used

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  • Inter-cluster quick communication method for wireless sensor network
  • Inter-cluster quick communication method for wireless sensor network
  • Inter-cluster quick communication method for wireless sensor network

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific implementation examples. figure 1 It is a cluster structure diagram of the sensor network, and the communication method is as follows: the ordinary nodes in the cluster first send the data packet to the cluster head node, and then the cluster head node forms a multi-hop chain transmission path, and the data is transmitted from the source cluster head along this chain path to the sink node.

[0029] Before sending data each time, the source cluster head sends a very short transmission request packet RP in advance and transmits it to the sink node along the multi-hop link composed of the cluster head, such as figure 2 shown. Since each cluster head may have data to send, and does not know in advance how many data packets other cluster heads need to send, in order to determine the time of the entire inter-cluster communication so tha...

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Abstract

The invention relates to an inter-cluster quick communication method for a wireless sensor network, which comprises that: a chain communication channel is formed among cluster heads; at the beginning of the communication of each time, a source cluster head pre-transmits a short pre-engagement packet (RP) and quickly transmits the pre-engagement packet to a convergent node along a multi-hop link consisting of the cluster heads, and when the RP passes through each intermediate cluster head, the intermediate cluster heads write the number of data packets needing transmitting in the communicationinto corresponding fields in the RP; after receiving the RP, the convergent node replies a pre-engagement confirmation packet (CP) and transmits the pre-engagement confirmation packet back to the source cluster head issuing a request along an inverse path, and the cluster heads receiving the CP along the inverse path rationally schedule sleeping and communication processes according to the numbers of the data packets per se needing transmitting; and a multi-hop transmission channel is formed among the cluster heads and data is quickly transmitted to the convergent node by adopting a mode similar to a multi-stage production line. The inter-cluster quick communication method has the advantages of effectively improving inter-cluster communication efficiency and reducing transmission delay and energy consumption to a relatively greater extent.

Description

technical field [0001] The present invention relates to the field of wireless networks, in particular to the field of wireless sensor network protocol design, specifically provides a fast communication method between wireless sensor network clusters, although the given features can be applied to other network designs. Background technique [0002] Wireless sensor networks are usually multi-hop self-organizing networks composed of many resource-constrained nodes, and have a wide range of applications in many fields such as environmental monitoring, military management, industrial control, and medical systems. Due to the limited energy and processing capabilities of a single node in a wireless sensor network, the nodes usually need to sense, collect and process information in a collaborative manner and send it to the sink node, so this type of network has high performance in terms of energy consumption, delay, and reliability. requirements. [0003] In the application of wire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/02H04W84/18
CPCY02D30/70
Inventor 姚国良刘昊吴建辉时龙兴田茜陈昊张萌
Owner SOUTHEAST UNIV
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