RT Journal Article
SR Electronic
A1 Svitek, M.
A1 Zelinka, T.
T1 Decision processes in Communications Multi-path Access Systems applied within ITS
JF Transactions on Transport Sciences
YR 2008
VO 1
IS 1
SP 3
OP 12
DO 10.5507/tots.2008.001
UL https://tots.upol.cz/artkey/tot-200801-0001.php
AB The paper presents multi-path communications access systems decision processes applied within ITS (Intelligent Transport System). A competent decision process based on precisely quantified system requirements using a performance indicators tolerance range represents a critical part of the ITS access communications system. The goal of the described process is to keep the communications service continuously available with no influence on changing conditions in time and served space. Either the family of CALM standards based system or the specifically designed and configured L3/L2 switching represent relevant a solution for such a multi-path access communication system. The method of different paths service quality evaluation and the selection of the best possible active communications access path are introduced. The proposed approach is based on Kalman filtering, which separates a reasonable part of noise and also allows the prediction of the individual parameters' near future behavior. The presented classification algorithm applied to the filtered measured data combined with deterministic parameters is trained using training data, i.e., a combination of the parameters' vectors time line and relevant decisions. The classification process results are dependent on the size and quality of the training sets.