Mixed updating industrial wireless sensor network scheduling method based on information age

A sensor network and industrial wireless technology, applied in specific environment-based services, wireless communication, network planning, etc., can solve problems such as AoI reduction and data staleness, and achieve the goal of reducing complexity, improving throughput, and avoiding dimensional disasters. Effect

Active Publication Date: 2022-01-04
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

When the network frequently delivers stale data, although the throughput is high at this time, the AoI will be reduced due to the stale data

Method used

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  • Mixed updating industrial wireless sensor network scheduling method based on information age
  • Mixed updating industrial wireless sensor network scheduling method based on information age
  • Mixed updating industrial wireless sensor network scheduling method based on information age

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Embodiment Construction

[0058] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0059] see Figure 1 ~ Figure 3 , the present invention aims at the industrial wireless sensor network in which the periodic data and non-periodic data updat...

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Abstract

The invention relates to a hybrid updating industrial wireless sensor network scheduling method based on information age, and belongs to the technical field of industrial wireless sensor networks. According to the method, for an industrial wireless sensor network in which two data updating modes of periodic data and non-periodic data are mixed and coexist, the average information age of data in the network is optimized. Meanwhile, a throughput factor is considered; the link scheduling method comprises the following steps of: performing joint optimization on a link scheduling problem of a minimum information age and throughput weighted sum in a time slot-by-slot scheduling mode, expressing the optimization problem as a finite state Markov decision process, performing approximate representation on a state value function by utilizing a deep Q network, and obtaining the link scheduling method by adopting a deep reinforcement learning mode. According to the joint optimization method provided by the invention, the dimensionality of a system state space is reduced, and the timeliness of data delivery and the throughput of a network are improved.

Description

technical field [0001] The invention belongs to the technical field of industrial wireless sensor networks, and relates to a scheduling method for mixed update industrial wireless sensor networks based on information age. Background technique [0002] With the rapid development of industrial wireless sensor networks, it has been widely used in a large number of real-time business scenarios, such as automobile manufacturing and electronic product manufacturing. In order to ensure safe and efficient production and timely and correct decision-making, industrial wireless sensor networks need to meet more stringent data delivery timeliness requirements. In order to measure this timeliness more comprehensively, Age of information (AoI) is proposed to measure the freshness of information, which comprehensively considers the generation time and transmission delay of data, and affects the network delivery data from the perspective of destination. Freshness was measured. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/38H04W16/22H04W72/12
CPCH04W4/38H04W16/22H04W72/535Y02D30/70
Inventor 王恒余蕾谢鑫王平
Owner CHONGQING UNIV OF POSTS & TELECOMM
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