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Performance analysis of transmission rate control algorithm from readers to a middleware in intelligent transportation systems

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  • Radio Frequency Identification (RFID) systems consisting of tags, readers and a middleware are known as one of the promising technologies to be applied to diverse fields for realizing a ubiquitous society. A typical RFID system where RFID readers collect information from tags on vehicles and send the collected data to a middleware has been used primarily for various distribution and logistics applications. The collected information by the middleware is used for many intelligent transportation systems (ITS) applications such as traffic estimation and real-time navigation. We propose a dynamic transmission rate control algorithm between readers and a middleware with limited buffer capacity environment and present analytical performances. We construct 3-dimensional continuous time Markov chains whose Q-matrix has the form of a quasi-birth and death structure. From the analytical model, we obtain performance measures such as packet loss probability and system throughput. We find the maximum number of readers associated with a middleware while satisfying a constraint on packet loss probability.
    Mathematics Subject Classification: Primary: 68M20; Secondary: 90B18, 90B22.


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