Paper Info
Title
Cedos: A Network Architecture and Programming Abstraction for Delay-Tolerant Mobile Apps.
Abstract
Delay-tolerant Wi-Fi offloading is known to improve overall mobile network bandwidth at low delay and low cost. Yet, in reality, we rarely find mobile apps that fully support opportunistic Wi-Fi access. This is mainly because it is still challenging to develop delay-tolerant mobile apps due to the complexity of handling network disruptions and delays. In this paper, we present Cedos, a practical delay-tolerant mobile network access architecture in which one can easily build a mobile app. Cedos consists of three components. First, it provides a familiar socket API whose semantics conforms to TCP, while the underlying protocol, $\\text{D}^{2}$ TP, transparently handles network disruptions and delays in mobility. Second, Cedos allows the developers to explicitly exploit delays in mobile apps. App developers can express maximum user-specified delays in content download or use the API for real-time buffer management at opportunistic Wi-Fi usage. Third, for backward compatibility to existing TCP-based servers, Cedos provides $\\text{D}^{2}$ Prox, a protocol-translation Web proxy. $\\text{D}^{2}$ Prox allows intermittent connections on the mobile device side, but correctly translates Web transactions with traditional TCP servers. We demonstrate the practicality of Cedos by porting mobile Firefox and VLC video streaming client to using the API. We also implement delay/disruption-tolerant podcast client and run a field study with 50 people for eight weeks. We find that up to 92.4% of the podcast traffic is offloaded to Wi-Fi, and one can watch a streaming video in a moving train while offloading 48% of the content to Wi-Fi without a single pause.
Year
DOI
Venue
2017
10.1109/TNET.2016.2603523
IEEE/ACM Trans. Netw.
Keywords
Field
DocType
IEEE 802.11 Standard,Mobile communication,Delays,Mobile computing,Digital audio broadcasting,Streaming media,Switches
Mobile computing,Mobile technology,Mobile search,Computer science,Mobile station,Computer network,Mobile database,Cellular network,Mobile Web,Operating system,Mobile telephony
Journal
Volume
Issue
ISSN
25
2
1063-6692
Citations 
PageRank 
References 
0
0.34
18
Authors
7
Name
Order
Citations
PageRank
YoungGyoun Moon1363.60
Donghwi Kim2122.30
Younghwan Go3404.02
Yeongjin Kim41238.38
Yung Yi51557104.55
Song Chong62113143.72
KyoungSoo Park7119873.47