Copyright © 2008 The Institute of Electronics, Information and Communication Engineers
Regular Section -- Papers -- Wireless Communication Technologies |
TCP Flow Level Performance Evaluation on Error Rate Aware Scheduling Algorithms in Evolved UTRA and UTRAN Networks
1 The authors are with the Dept. of Computer Science and Electronics, Kyushu Institute of Technology, Iisuka-shi, 820-8502 Japan. E-mail: zhangyan{at}kyushu.jgn2.jp, 2 The author is with Network Design Research Center, Kyushu Institute of Technology, Kitakyushu-shi, 802-0001 Japan.
We present a TCP flow level performance evaluation on error rate aware scheduling algorithms in Evolved UTRA and UTRAN networks. With the introduction of the error rate, which is the probability of transmission failure under a given wireless condition and the instantaneous transmission rate, the transmission efficiency can be improved without sacrificing the balance between system performance and user fairness. The performance comparison with and without error rate awareness is carried out dependant on various TCP traffic models, user channel conditions, schedulers with different fairness constraints, and automatic repeat request (ARQ) types. The results indicate that error rate awareness can make the resource allocation more reasonable and effectively improve the system and individual performance, especially for poor channel condition users.
Key Words: evolved UTRA and UTRAN networks, TCP performance, channel-aware scheduling algorithms, resource allocation, proportional fairness
Manuscript received February 5, 2007. Manuscript revised September 13, 2007.
Reference
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