التفاصيل البيبلوغرافية
| العنوان: |
Modelling, analysis and performance improvement of an SRU’s access request queue in multi-channel V2I communications. |
| المؤلفون: |
Khabbaz, Maurice, Assi, Chadi, Hasna, Mazen, Ghrayeb, Ali, Fawaz, Wissam |
| المصدر: |
Pervasive & Mobile Computing; Aug2015, Vol. 21, p92-102, 11p |
| مصطلحات موضوعية: |
PERFORMANCE evaluation, MATHEMATICAL models, CLIENT/SERVER computing, TELECOMMUNICATION systems, COMPUTER simulation, PROBABILITY theory |
| مستخلص: |
This paper presents a concise yet comprehensive description of a multi-channel Vehicle-to-Infrastructure (V2I) communication system. Existing mathematical models for such a system overlook some of its essential behavioural characteristics such as the reneging, force-termination and ultimately blocking of service requests. A multi-server queueing model with First-In–First-Out (FIFO) service policy is proposed for the purpose of accurately capturing the dynamics of the above-mentioned communication system and evaluating its performance. Approximations were exploited as a mean to enhance this model’s mathematical tractability. Simulations are conducted in the context of a realistic scenario with the objective of validating the proposed approximate model, verifying its accuracy and characterizing the system’s performance in terms of several new metrics. The reported results indicate a cataclysmic access request blocking probability ranging from 66 % to 85 % . An Access Request Deadline-Aware (ARDA) service policy is then proposed to reduce the blocking probability and improve the system’s response time. Indeed ARDA achieved an improvement over FIFO of almost 70 % in terms of the overall blocking probability and 22 % to 66 % in terms of the system’s response time. [ABSTRACT FROM AUTHOR] |
|
Copyright of Pervasive & Mobile Computing is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
Full Text Finder