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Industrial wireless network deterministic scheduling method supporting data packet aggregation

A technology of industrial wireless network and scheduling method, which is applied in the field of deterministic scheduling of industrial wireless networks supporting data packet aggregation, and can solve problems such as lack of, few time slot resources, and transmission conflicts

Active Publication Date: 2020-09-08
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Since the links near the gateway in the industrial wireless network will generate a large number of transmission conflicts, the conflicting links will be arranged in different time slots, resulting in the consumption of a large number of time slot resources, which will give unscheduled links Leaving fewer slot resources, resulting in the link not being able to complete scheduling within the deadline
However, considering the lack of support for packet aggregation, the design of deterministic scheduling methods

Method used

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  • Industrial wireless network deterministic scheduling method supporting data packet aggregation
  • Industrial wireless network deterministic scheduling method supporting data packet aggregation
  • Industrial wireless network deterministic scheduling method supporting data packet aggregation

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Embodiment Construction

[0049] 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.

[0050] see Figure 1 ~ Figure 4 , figure 1 Describes the working process of the additional link scheduling method based on conflict slack first; figure 2 ...

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Abstract

The invention relates to an industrial wireless network deterministic scheduling method supporting data packet aggregation, and belongs to the field of industrial wireless network communication. For an industrial wireless network supporting data packet aggregation, a scheduling method combining a main link and an additional link is adopted to configure time slots and channel resources of the network so as to meet the deterministic transmission requirement that a data stream reaches target equipment within deadline. According to the method, links are scheduled channel by channel in each time slot, the link with the minimum conflict relaxation degree is selected as a main link, and an additional link is selected from remaining links by utilizing a data packet aggregation function, so that data packets of the additional link are subjected to aggregation transmission along with data packets of the main link; and an additional link is selected, specifically an additional link scheduling method based on conflict relaxation priority, an additional link scheduling method based on aggregation packet number maximum priority, or an additional link scheduling method considering packet aggregation combination and conflict relaxation. The network energy consumption can be reduced, and the scheduling success rate is improved.

Description

technical field [0001] The invention belongs to the technical field of industrial wireless network communication, and relates to an industrial wireless network deterministic scheduling method supporting data packet aggregation. Background technique [0002] Industrial wireless network is a network technology used for data exchange between factory automation equipment. It has the characteristics of low cost, flexible deployment, high reliability and easy maintenance. It plays an important role in the monitoring of industrial field equipment. Industrial wireless networks have real-time and deterministic requirements for data stream transmission, and data streams must be transmitted to the destination device within a strict deadline, otherwise, production efficiency will be reduced, and even safety accidents will occur. The international standards that have been formulated include WirelessHART, WIA-PA, WIA-FA, ISA100.11, and 6TiSCH. [0003] There is a real-time requirement fo...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/10H04L5/00H04W84/18
CPCH04W72/0446H04L5/001H04W84/18H04W72/53H04W72/56Y02D30/70
Inventor 王恒谭帅余蕾
Owner CHONGQING UNIV OF POSTS & TELECOMM
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