A Multistage Control Mechanism for Group-Based Machine-Type Communications in an LTE SystemReport as inadecuate




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Journal of Applied MathematicsVolume 2013 2013, Article ID 548564, 12 pages

Research Article

Department of Information Management, National Taiwan University of Science and Technology, Taipei, Taiwan

Smart Network System Institute, Institute for Information Industry, Taipei, Taiwan

Received 18 March 2013; Accepted 17 July 2013

Academic Editor: Anyi Chen

Copyright © 2013 Wen-Chien Hung et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

When machine-type communication MTC devices perform the long-term evolution LTE attach procedure without bit rate limitations, they may produce congestion in the core network. To prevent this congestion, the LTE standard suggests using group-based policing to regulate the maximum bit rate of all traffic generated by a group of MTC devices. However, previous studies on the access point name-aggregate maximum bit rate based on group-based policing are relatively limited. This study proposes a multistage control MSC mechanism to process the operations of maximum bit rate allocation based on resource-use information. For performance evaluation, this study uses a Markov chain with to analyze MTC application in a 3GPP network. Traffic flow simulations in an LTE system indicate that the MSC mechanism is an effective bandwidth allocation method in an LTE system with MTC devices. Experimental results show that the MSC mechanism achieves a throughput 22.5% higher than that of the LTE standard model using the group-based policing, and it achieves a lower delay time and greater long-term fairness as well.





Author: Wen-Chien Hung, Sun-Jen Huang, Feng-Ming Yang, and Chun-Yen Hsu

Source: https://www.hindawi.com/



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