Practicalizing Delay-Tolerant Mobile Apps with Cedos

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 work, 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, D2 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 TCPbased s...

• Type: Journal
• Year: 2015
• Where: MOBISYS
• Authors: YoungGyoun Moon, Donghwi Kim, Younghwan Go, Yeongjin Kim, Yung Yi, Song Chong, KyoungSoo Park
• Keywords: Computer Networks, MOBISYS 2015