Low-speed wireless sensor network testability analysis method based on Bayes network

Abstract

The invention discloses a low-speed wireless sensor network testability analysis method based on a Bayes network. The method comprises the first step of conducting statistics on testing result information, and building a testability analysis model based on the Bayes network according to a fault mode and various testing input signals; the second step of using the testability analysis model to analyze the influence of faults, and determining a conditional probability table of nodes; the third step of using the testability analysis model to analyze a correlation relation of the fault mode and the testing input signals to obtain a fault-testing correlation matrix; the fourth step of introducing a testability index and calculating a corresponding score, comparing the score with anticipatory data, and conducting systematic and scientific evaluation on the reliability in achieving a protocol. According to the low-speed wireless sensor network testability analysis method based on the Bayes network, the description of mutual relations of uncertain factors in a testing process of protocol equipment is taken into consideration, quantitative analysis is conducted, a selected testing index can evaluate the degree of the reliability of the protocol equipment on the whole, thus the low-speed wireless sensor network testability analysis method has feasibility and comparability, and is small in computing amount; meanwhile, the interference of false alarm information is effectively overcome.

Description

technical field [0001] The invention relates to a testability analysis technology of wireless sensor network protocol software, in particular to a Bayesian network-based low-speed wireless sensor network testability analysis method. Background technique [0002] As a new intelligent network, the wireless sensor network has been proposed in the 1990s to the present. Its protocol standards have been continuously improved and developed, and various equipment manufacturers have launched related products and system applications. Due to the characteristics of large-scale, self-organization, dynamics, and reliability of wireless sensor networks, higher requirements are put forward for the interconnection and intercommunication between different subnets and devices from different manufacturers. Therefore, it is necessary to conduct consistency tests on these devices , to check the degree of consistency between the protocol implementation itself and the protocol standard, improve pro...

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Problems solved by technology

[0003] At present, software testing companies or research institutes at home and abroad have carried out extensive research on protocol testing, and proposed many innovative methods, but these methods still remain in the selection of network protocol testing tools and the method optimization of the specific execution process. In order to assess the possibility of interoperability between products, there is a lack of a reliability assessment method for the implementation of sensor network protocols

Through the statistics of the test cycle test results of the test items, it can be seen that there may be false positives caused by uncertain data misreporting and loss in the test, which reduces the credibility of the test results; in addition, due to the topology and Functional complexity, the corresponding logical relationship between protocol implementation design defects and tests also shows uncertainty, and it is difficult to deal with these uncertain information

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