Scoop: Decentralized and opportunistic multicasting of information streams

Scoop : Decentralized and opportunistic multicasting of information streams

QC 20140910
We consider the problem of delivering information streams to interested mobile users, leveraging both access to the infrastructure and device-to-device data transfers. The goal is to design practical relaying algorithms that aim at optimizing a global system objective that accounts for two important aspects: first, the user interest in content with respect to its type and delivery time; and, second, resource constraints such as storage and transmission costs. We first examine a set of real-world datasets reporting contacts between users moving in relatively restricted geographic areas (e.g. a city). These datasets provide evidence that significant performance gains can be achieved by extending the information dissemination from one to two hops, and that using longer paths only brings marginal benefits. We also show that correlation of delays through different paths is typically significant, thus asking for system design that would allow for general user mobility. We then propose a class of relaying strategies (referred to as SCOOP) that aim at optimizing a global system objective, are fully decentralized, require only locally observable states by individual devices, and allow for general user mobility. These properties characterize a practical scheme whose efficiency is evaluated using real-world mobility traces.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Kommunikationssystem hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Communication Systems hsv//eng
decentralized opportunistic relaying
DTNs
two-hop relaying
Data sets
Delivery time
Geographic areas
Global systems
Information streams
Marginal benefit
Mobile users
Opportunistic multicasting
Opportunistic relaying
Performance Gain
Practical schemes
Real-world datasets
Relaying algorithm
Relaying strategy
Resource Constraint
Transmission costs
User interests
User mobility
Data transfer
Global system for mobile communications
Information dissemination
Mobile computing
Optimization
Systems analysis
Multicasting

Ingår i:Proceedings of the Annual International Conference on Mobile Computing and NetworkingNew York, NY, USA : ACM, s. 169-1809781450304924

Av författaren/redakt...: Gunawardena, D.; Karagiannis, T.; Proutiere, Alexa ...; Santos-Neto, E.; Vojnovic, M.

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Kommunikationssy ...

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