Deterministic scheduling-based wireless sensor network channel assessment method

Abstract

The invention requests for protecting a deterministic scheduling-based channel assessment method in a wireless sensor network. The channel assessment method comprises that: the channel use number of each time slot is calculated by combining industrial wireless deterministic scheduling technology according to the parameters such as the period of a super frame, the length of a channel hopping sequence, a channel hopping mode and the like; a channel assessment time selection method is raised by analyzing channel use rate and network traffic of equipment; the equipment assesses the communication quality of a channel at reasonable time, and sends a channel assessment quality table to a system manager; and the system manager divides the level of the channel according to the packet loss rate, and notifies total network equipment of a channel blacklist by broadcasting. The method can effectively improve the reliability and stability of wireless sensor network communication.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a channel estimation method of a wireless sensor network based on deterministic scheduling. Background technique [0002] Sensor network is a kind of wireless communication technology oriented to short-range and low-rate information exchange between devices that emerged at the beginning of this century. It has the characteristics of strong anti-interference ability, low power consumption and deterministic communication. Therefore, it is widely used in industrial control, environmental monitoring, It has good application prospects in commercial monitoring, medical and other application fields. [0003] In the industrial world, if a wired sensor network is used, the cost is high and it is difficult to implement. The introduction of the wireless sensor network solves the problems of difficult industrial field wiring and high installation and maintenance costs. With...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the channel evaluation method of the existing wireless sensor network fails to effectively evaluate the channel according to the characteristics of deterministic scheduling in the network

This method is likely to cause problems such as reduction of channel utilization, waste of network communication resources, and reduction of network throughput. The present invention provides a channel evaluation method for wireless sensor networks based on deterministic scheduling. According to the difference of channel usage cycle, a channel evaluation time selection mechanism is proposed

Images