Presentation 2018-07-20
A Study of Queue Length Control in TCP/AQM Networks Considering Buffer Capacity
Ryosuke Hotchi, Ryogo Kubo,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In the modern world where many devices all around the world communicate with each other, the total amount of the communication traffics is increasing at an accelerating rate. Therefore, the congestion of the traffic flows has been a serious problem. The most used communication protocol world wide called TCP (Transmission Control Protocol) is known to degrade its communication performance when confronted with a network flow congestion. In order to deal with this problem, a congestion control method called AQM (Acive Queue Management) has been proposed, and various studies have been done. As a combination of control theory and AQM, an AQM congestion control method using PID (Proportional-Integral-Derivative) controller has been proposed. The AQM based on control theory utilizes a preset parameter called target queue length, but this value was set heuristically in existing studies and the router's buffering capacity was not fully utilized. In our previous research, we have presented a study of an algorithm which dynamically controls this target queue length in order to more efficiently utilize the buffering capacity. In this report, we consider the effect of different RTT (Round-Trip Time) and size of buffering capacity. The simulation results confirm the effectiveness of the proposal algorithm.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) TCP / AQM / PID / Congestion Control / Target Queue Length
Paper # CQ2018-39
Date of Issue 2018-07-12 (CQ)

Conference Information
Committee CQ
Conference Date 2018/7/19(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tohoku Univ.
Topics (in Japanese) (See Japanese page)
Topics (in English) Assessment, Measurement and Control of QoE and QoS, etc.
Chair Takanori Hayashi(Hiroshima Inst. of Tech.)
Vice Chair Hideyuki Shimonishi(NEC) / Jun Okamoto(NTT)
Secretary Hideyuki Shimonishi(NTT) / Jun Okamoto(Nippon Inst. of Tech.)
Assistant Chikara Sasaki(KDDI Research) / Yoshiaki Nishikawa(NEC) / Ryo Yamamoto(UEC)

Paper Information
Registration To Technical Committee on Communication Quality
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study of Queue Length Control in TCP/AQM Networks Considering Buffer Capacity
Sub Title (in English)
Keyword(1) TCP
Keyword(2) AQM
Keyword(3) PID
Keyword(4) Congestion Control
Keyword(5) Target Queue Length
1st Author's Name Ryosuke Hotchi
1st Author's Affiliation Keio University(Keio Univ.)
2nd Author's Name Ryogo Kubo
2nd Author's Affiliation Keio University(Keio Univ.)
Date 2018-07-20
Paper # CQ2018-39
Volume (vol) vol.118
Number (no) CQ-140
Page pp.pp.45-50(CQ),
#Pages 6
Date of Issue 2018-07-12 (CQ)