Data transmission method based on capture effect in wireless sensor network

A data transmission method and wireless sensor technology, applied in the field of communication, can solve the problems such as the receiver cannot decode data correctly, node time synchronization, high scheduling overhead, etc., and achieve the effects of improving throughput, reducing false alarm rate, and saving energy.
CN104735698AActive Publication Date: 2015-06-24广东达望计算机科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
广东达望计算机科技有限公司
Publication Date
2015-06-24

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Abstract

The invention discloses a data transmission method based on a capture effect in a wireless sensor network. The data transmission method mainly solves the problem that in the prior art, the throughput capacity is low under the condition that a large number of data burst. The method comprises the steps that 1, a receiver broadcasts a competition beacon group in a wireless channel where the receiver works; 2, after a competitor receives the competition beacon group, a competition group is broadcast; 3, the receiver decodes signals of the competitor through the capture effect and broadcasts a token beacon group, wherein the node allowed to transmit data and transmission time duration are assigned in the token beacon group; 4, after the competitor receives the token beacon group, whether the competitor is a node allowed to transmit data or not is judged, if the competitor is the node, a token is obtained and data are transmitted to the receiver within a distributed time period, and if the competitor is not the node, the token is not obtained and data are not transmitted. Through the token distribution mechanism and the capture effect, the utilization rate of the channel and the throughput capacity for data transmission are improved.
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Description

technical field

[0001] The invention belongs to the technical field of communication, and in particular relates to a data transmission method which can be used in a wireless sensor network. Background technique

[0002] A basic function of a wireless sensor network is to efficiently transmit the data collected by all sensor nodes in the network to the base station or sink node. This mode of transferring data from multiple nodes to one node is called aggregation. In many sensor network applications, sensor nodes usually transmit data to the base station after discovering an event, resulting in a burst of large amounts of data, and multiple nodes simultaneously send data to a receiving node. Since wireless transmission is based on a shared channel, when a node sends a packet depends on the medium access control protocol used, that is, the MAC protocol. There are two main types of MAC protocols at present: carrier sense multiple access control protocol CSMA and time division ...

Claims

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