NDLI: Using adaptive heartbeat rate on long-lived TCP connections

Content Provider	IEEE Xplore Digital Library
Author	Rahman, M.S. Uddin, Y.S. Kaykobad, M.
Copyright Year	2016
Description	Author affiliation: Department of Computer Science and Engineering Bangladesh University of Engineering and Technology (Rahman, M.S.; Uddin, Y.S.; Rahman, M.S.; Kaykobad, M.)
Abstract	In this paper, we propose techniques for dynamically adjusting heartbeat or keep-alive interval of long-lived TCP connections, particularly the ones that are used in push notification service in mobile platforms. When a TCP connection between a client behind a NAT (or any other middle-box) and a server is idle for a long time, it may get torn down due to TCP binding timeout. In order to keep the connection alive, the client device needs to send keep-alive packets through the connection when it is otherwise idle. To reduce resource consumption, the keep-alive packet should preferably be sent at the farthest possible time within the NAT binding timeout. We refer to this interval as the Optimal Keep-alive Interval. Due to varied settings of different network equipments, optimal keepalive interval will not be identical in different networks. Hence, the heartbeat rate used in different networks should be changed dynamically. We propose a set of iterative probing techniques, namely binary, exponential and composite search, that detect optimal keep-alive interval with varying degree of accuracy; and in the process, keeps improving the keep-alive interval used by the client device. We also analytically derive performance bounds of these techniques. To the best of our knowledge, ours is the first work that systematically studies several techniques to dynamically improve keep-alive interval. To this end, we run experiments in simulation as well as make a real implementation on Android to demonstrate the proof-of-concept of the proposed schemes.
Starting Page	1
Ending Page	9
File Size	250666
Page Count	9
File Format	PDF
e-ISBN	9781509002030
DOI	10.1109/NSysS.2016.7400700
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-07
Publisher Place	Bangladesh
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance evaluation Heart beat Mobile communication Batteries Servers Probes Smart phones
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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