Mismatch of Packet Recovery Mechanisms for Bit Error and Handover in Wireless TCP(TCP)(<Special Section>Networking Technologies for Mobile Internet Systems)
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概要
- 論文の詳細を見る
In wireless environment, TCP suffers from significant performance degradation due to bit errors on wireless link and handovers because it responds to all packet losses by invoking congestion control even though packet losses are not related to congestion. Several schemes have been proposed to improve the performance degradation due to each cause. They have been evaluated in a specific network environment where either bit errors or handover occurs, i.e. they do not occur at the same time. In this paper, we reveal the packet recovery mismatch problem in an environment where both of bit errors and handover can cause the performance degradation. We pick up one scenario that TCP traffic is transmitted in the situation that ARQ (Automatic Repeat reQuest) and packet forwarding are implemented together. They are proposed to reduce the influence of bit errors and handover respectively and are natural approaches from the viewpoint of protocol layering. Computer simulation shows that in that scenario both techniques cannot perform efficiently due to interaction of each other. We also propose two buffer control approaches to resolve the packet recovery mismatch problem in our scenario according to applicability of cross-layer operation between layer 2 and layer 3.
- 社団法人電子情報通信学会の論文
- 2004-09-01
著者
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Matsuda T
Department Of Information Systems Engineering Toyama Prefectural University
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Matsuda Toshihiro
Department Of Information Systems Engineering Toyama Prefectural University
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MATSUDA Takahiro
Graduate School of Engineering, Osaka University
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Matsushita Yosuke
Graduate School Of Science And Engineering University Of Toyama
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Yamamoto Miki
Kansai Univ. Suita‐shi Jpn
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Yamamoto Miki
Department Of Electrical Engineering And Computer Science Kansai University
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Sakai Yu
Graduate School Of Engineering Osaka University
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YAMAMOTO Miki
Graduate School of Engineering, Osaka University
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Matsushita Yosuke
Graduate School Of Engineering Osaka University
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Matsuda Takahiro
Osaka Univ. Suita‐shi Jpn
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Matsuda Takahiro
Graduate School Of Engineering Osaka University
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Yamamoto Miki
Graduate School Of Engineering Osaka University
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