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A Semi-structured Transmission Scheduling Method for Data Collection in Wireless Sensor Networks

A wireless sensor and semi-structured technology, applied in the network field, can solve the problem that the scheduling method cannot make full use of the concurrent transmission capacity of the link, and cannot well meet the real-time network throughput requirements of the application, achieving low duty cycle, The effect of reducing energy consumption and prolonging the life cycle

Active Publication Date: 2018-01-05
中科水研(江西)科技股份有限公司
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Problems solved by technology

Due to the use of fixed transmission paths, the existing scheduling methods cannot make full use of the concurrent transmission capabilities between links, so usually more time slots are needed to complete the scheduling tasks, which cannot well meet the real-time requirements of applications and network requirements. throughput requirements

Method used

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  • A Semi-structured Transmission Scheduling Method for Data Collection in Wireless Sensor Networks
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  • A Semi-structured Transmission Scheduling Method for Data Collection in Wireless Sensor Networks

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Embodiment Construction

[0040] In order to better illustrate the method and application of the present invention, below in conjunction with example and accompanying drawing, provide specific embodiment of the present invention, to further illustrate the substantive characteristics of the present invention and remarkable progress, but the present invention is by no means limited to Example.

[0041] figure 1 It is a communication diagram corresponding to a wireless sensor network from an actual environment monitoring system. figure 2 It is a flow chart realized by the scheduling method of the present invention. Depend on image 3 It can be seen that the scheduling method constructs the communication graph of the wireless sensor network, and constructs a semi-structured routing topology graph and link interference graph, then arranges the scheduling and allocates time slots, and finally sets the dormant state of the nodes. In order to explain more intuitively and popularly figure 2 The implementa...

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Abstract

The invention discloses a semi-structured transmission scheduling method for wireless sensor network data collection. It is characterized in that the method includes: 1) constructing a loose semi-structured data collection routing topology graph by performing breadth-first search on the network communication graph; 2) according to the main interference and secondary interference between transmission links in the network 3) Define the link weight interference factor to comprehensively weigh the transmission load of the sending node and the interference intensity caused by the sending link to other links in the network; 4) Dynamic link selection based on the minimum weight priority and time slot allocation strategy; 5) Explicitly controlled node sleep state and adaptively adjusted data collection period. The invention jointly designs routing and scheduling based on cross-layer design ideas, and enhances scheduling time slot utilization by making full use of path redundancy, thereby reducing data collection time delay and improving network throughput. The invention is suitable for the application of the wireless sensor network with higher requirements on real-time performance.

Description

technical field [0001] The invention relates to a semi-structured transmission scheduling method for wireless sensor network data collection, which belongs to the field of network technology. Background technique [0002] A wireless sensor network is a network formed by a large number of nodes with sensing, communication, computing and storage capabilities deployed in the monitoring area through multi-hop wireless communication self-organization. Due to its high flexibility and low cost, wireless sensor networks are widely used in environmental monitoring, national defense / security, industrial automation, medical health and other fields. In various application scenarios, wireless sensor networks face a common requirement or task, which is to collect data of interest to users from the physical environment. In wireless sensor networks, the process of gathering data streams from a large number of sensor nodes to the base station (or sink node) is called data collection. It is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/24H04W52/02H04W72/12
CPCH04W40/16H04W40/246H04W72/0446H04W72/541Y02D30/70
Inventor 肖世良程小六吴光胡宁宁陈昕韡付鹏程郑旗袁晓兵
Owner 中科水研(江西)科技股份有限公司
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