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Semi-structured transmission dispatching method orienting wireless sensor network data collection

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, and achieves low duty cycle, The effect of reducing energy consumption and prolonging the life cycle

Active Publication Date: 2015-01-21
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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  • Semi-structured transmission dispatching method orienting wireless sensor network data collection
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  • Semi-structured transmission dispatching method orienting wireless sensor network data collection

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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 dispatching method orienting wireless sensor network data collection. The method is characterized by comprising the steps that 1, breadth-first search is carried out on a network communication graph, so that a slack semi-structured data collection route topological graph is constructed; 2, a link interference graph is constructed according to the main interference and subsidiary interference relation between transmission links in a network; 3, link weight interference factors are defined, so that the interference intensity caused to other links of the network from transmission loads of sending nodes and sending links is comprehensively weighed; 4, the dynamic link selection and time slot allocation strategy based on preference of the minimum weight is carried out; 5, a node dormant state is controlled in an explicit mode, and a data collection period is adjusted in a self-adaptive mode. According to the method, routing and dispatching are designed in a unified mode on the basis of a cross-layer design idea, the time slot utilization rate of dispatching is increased by fully utilizing the redundancy of a path, time delay of data collection is shortened, and the handling capacity of the network is improved. The method is applied to the wireless sensor network with the high requirement for the real-time property.

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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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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