Active and passive measuring method for isomorphism wireless interference

Abstract

The invention relates to an active and passive measuring method for isomorphism wireless interference. The method comprises the steps that firstly, setup parameters are initialized, and timers are started; secondly, the interference passive perceiving timer begins to keep time, the third step is executed, and if the time keeping period is larger than an evaluation period, the fourth step is executed; thirdly, LQI instantaneous values and sampling number are measured in real time; fourthly, the average link LQI value is calculated, if the average LQI value is lower than an interference threshold value, the fifth step is executed repeatedly, and if not, the second step is executed; fifthly, the interference active measuring timer begins to keep time, the sixth step is executed, if the time keeping period is larger than the evaluation period, the eighth step is executed, and if not, the fifth step is executed; sixthly, a control packet is sent, and interference intensity between nodes is detected; seventhly, a responding packet sent by a neighbor node is received; eighthly, the current real-time interference receiving rate (IRR) is calculated and recorded; ninthly, normal conversation nodes are removed from an interference node list according to the communication receiving and sending situation; tenthly, smoothness predication is carried out on the IRR value through an EF filter, and the quality of a link within the preset time is estimated. The method is suitable for various applications, the isomorphism wireless interference can be accurately measured, and good stability and reasonable expenditure are achieved.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to an active and passive measurement method for isomorphic wireless interference. Background technique [0002] The application of wireless sensor network technology is becoming more and more extensive, and the deployment of nodes is more intensive, which has had an important impact in many fields. Multiple WSNs or independent sub-networks responsible for different application services may be deployed in the same environment and exist interleaved with each other. When the nodes of the wireless sensor network form a dense coexistence ecology in the same area, different nodes with similar distances and working on the same or adjacent channels will form co-frequency cross interference. This kind of interference is dynamic and non-persistent, depending on the time of application and the amount of traffic. This kind of interference will affect the communication reliabi...

AI Technical Summary

Problems solved by technology

In the study of isomorphic interference measurement, it has always been a technical difficulty to balance the accuracy and complexity reasonably. Neither the early side cognition and simple model, nor the current interference measurement technology based on software and hardware have been able to do a good job. solution

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