Performance analysis of transmission rate control algorithm from readers to a middleware in intelligent transportation systems
Bong Choi, Jinsoo Park, Sangkyu Baek · Numerical Algebra Control and Optimization · 2012
Radio Frequency Identification (RFID) systems consisting of tags,readers and a middleware are known as one of the promisingtechnologies to be applied to diverse fields for realizing aubiquitous society. A typical RFID system where RFID readers collectinformation from tags on vehicles and send the collected data to amiddleware has been used primarily for various distribution andlogistics applications. The collected information by the middlewareis used for many intelligent transportation systems (ITS)applications such as traffic estimation and real-time navigation. Wepropose a dynamic transmission rate control algorithm betweenreaders and a middleware with limited buffer capacity environmentand present analytical performances. We construct 3-dimensionalcontinuous time Markov chains whose Q-matrix has the form ofa quasi-birth and death structure. From the analytical model, weobtain performance measures such as packet loss probability andsystem throughput. We find the maximum number of readers associatedwith a middleware while satisfying a constraint on packet lossprobability.