Presentation 2017-12-21
A Study of Backlog Control Middleware in Android Terminals
Ayumi Shimada, Saneyasu Yamaguchi, Masato Ogchi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Network congestion is a prevalent problem on the Internet. Modern loss-based TCP algorithms aim to increase throughput by using aggressive congestion window (CWND) control strategies. Due to such strategies, a large number of packets may be backlogged and eventually dropped at the entry point to a wireless access network. Our previous work proposed CUBIC-based CWND control middleware for Android terminals to solve the backlog issue. It utilizes Round Trip Time (RTT) as an indication of the TCP ACK backlog condition at the WLAN Access Point (AP), and controls the upper and lower bounds of its CWND size to suppress excessive transmissions of its own TCP DATA packets. However, the middleware causes the severe fairness dwindling due to the timing difference of the middleware of each node when to start the control. In this study, we propose a new mechanism which takes the fairness of the transmission into account. Our new method starts control with taking cooperativeness into account. Our evaluation demonstrated that our new method gained more cooperativeness and fairness over the previous one by comprehending the situation of all other competing devices in the network.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) TCP / Android / Congestion / Fairness
Paper # MoNA2017-27
Date of Issue 2017-12-14 (MoNA)

Conference Information
Committee MoNA
Conference Date 2017/12/21(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Ochanomizu University
Topics (in Japanese) (See Japanese page)
Topics (in English) Cloud computing, Big data, Wireless network, etc.
Chair Ryoichi Shinkuma(Kyoto Univ.)
Vice Chair Shigeaki Tagashira(Kansai Univ.) / Gen Kitagata(Tohoku Univ.)
Secretary Shigeaki Tagashira(Kyushu Univ.) / Gen Kitagata(NTT)
Assistant Takayuki Nishio(Kyoto Univ.) / Takato Saito(NTT)

Paper Information
Registration To Technical Committee on Mobile Network and Applications
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study of Backlog Control Middleware in Android Terminals
Sub Title (in English)
Keyword(1) TCP
Keyword(2) Android
Keyword(3) Congestion
Keyword(4) Fairness
1st Author's Name Ayumi Shimada
1st Author's Affiliation Ochanomizu University(Ochanomizu Univ)
2nd Author's Name Saneyasu Yamaguchi
2nd Author's Affiliation Kogakuin University(Kogakuin Univ)
3rd Author's Name Masato Ogchi
3rd Author's Affiliation Ochanomizu University(Ochanomizu Univ)
Date 2017-12-21
Paper # MoNA2017-27
Volume (vol) vol.117
Number (no) MoNA-371
Page pp.pp.1-6(MoNA),
#Pages 6
Date of Issue 2017-12-14 (MoNA)