Channel and time slot scheduling method suitable for WIA-PA network

A technology of time slot scheduling and network, applied in the direction of network topology, wireless communication, electrical components, etc., can solve the problems of high installation cost, complicated maintenance work, difficult installation and wiring, etc., and achieve the effect of avoiding conflicts and stable and reliable operation.

Active Publication Date: 2015-07-01
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Compared with the traditional wired sensor network, the industrial wireless sensor network solves the problems of difficult install

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  • Channel and time slot scheduling method suitable for WIA-PA network
  • Channel and time slot scheduling method suitable for WIA-PA network
  • Channel and time slot scheduling method suitable for WIA-PA network

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Embodiment Construction

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiment is only one embodiment of the present invention, not all of them.

[0036] Time slot communication is adopted in WIA-PA network. The time slot communication between devices is based on superframe. Superframe is a set of time slots that appear cyclically. The number of time slots in a superframe determines the length of the superframe. The superframe structure of WIA-PA is divided into beacon, active period and inactive period. The active period is divided into CAP and CFP, and the inactive period is divided into intra-cluster communication, inter-cluster communication and dormancy. The superframe structure of WIA-PA like figure 1 shown. The CAP phase is mainly used for devices joining the network, intra-cluster management and retransmission; ...

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Abstract

The invention requests for protection of a channel and time slot scheduling method suitable for a WIA-PA network. The channel and time slot scheduling method includes that scheduling rules according to which channel and time slot scheduling is executed and a scheduling method meeting the scheduling rules are provided by combining actual WIA-PA network environment according to superframe structure of WIA-PA and characteristics of communication resource distribution; the scheduling rules include known conditions, hard conditions and scheduling priority which illustrate indicators in the scheduling method respectively; the scheduling method includes specifying scheduling of channels and time slot in a beacon state, a CAP state, an in-cluster communication stage and an inter-cluster communication stage in the WIA-PA superframe structure, and the method is used for scheduling the channels and the time slot of each equipment in the WIA-PA network; transmission of corresponding frames is arranged at corresponding stages according to the superframe structure of the WIA-PA, and all frames in the WIA-PA are ensured to be sent to a target node within a superframe period. By the channel and time slot scheduling method, scheduling of the channels and the time slot of the WIA-PA network is realized, the channels and the time slot are distributed for each equipment in the WIA-PA network, and requirements on time slot communication of the WIA-PA network are met.

Description

technical field [0001] The invention belongs to the technical field of industrial wireless sensor networks, and in particular relates to a channel and time slot scheduling method suitable for WIA-PA networks. Background technique [0002] Industrial wireless sensor network is a wireless communication technology suitable for industrial scenarios. It combines traditional industrial automation and wireless communication technology and is a new development direction in the field of industrial control. Industrial wireless sensor networks have technical characteristics such as low cost, strong anti-interference ability, high reliability, low energy consumption, easy deployment, and high flexibility, which meet the requirements for data transmission in industrial scenarios. Compared with the traditional wired sensor network, the industrial wireless sensor network solves the problems of difficult installation and wiring, high installation cost, low flexibility and complicated mainte...

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Application Information

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IPC IPC(8): H04W72/12H04W74/08
CPCH04W72/0446H04W84/18H04W72/12
Inventor 王恒肖开王彦斌王平
Owner CHONGQING UNIV OF POSTS & TELECOMM
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