4th International ICST Conference on Wireless Internet

Research Article

Reputation system for user-generated podcasting under community based mobility model

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  • @INPROCEEDINGS{10.4108/ICST.WICON2008.4897,
        author={Liang Hu and Lars Dittmann},
        title={Reputation system for user-generated podcasting under community based mobility model},
        proceedings={4th International ICST Conference on Wireless Internet},
        publisher={ICST},
        proceedings_a={WICON},
        year={2010},
        month={5},
        keywords={Reputation system ad-hoc podcasting User Generated Service Bayesian Framework},
        doi={10.4108/ICST.WICON2008.4897}
    }
    
  • Liang Hu
    Lars Dittmann
    Year: 2010
    Reputation system for user-generated podcasting under community based mobility model
    WICON
    ICST
    DOI: 10.4108/ICST.WICON2008.4897
Liang Hu1,*, Lars Dittmann1,*
  • 1: Technical University of Denmark 2800 LYNGBY, Denmark
*Contact email: liang.hu@fotonik.dtu.dk, ladit@fotonik.dtu.dk

Abstract

A user-generated podcasting service over mobile opportunistic networks can facilitate the user generated content dissemination while humans are on the move. However, in such a distributed and dynamic network environment, the design of efficient content forwarding and cache management schemes are challenging due to the lack of global podcast channel popularity information at each individual node. We design a distributed reputation system at each node for estimating the global channel popularity information which is significant for forwarding and cache management decision. Our simulation result shows that, compare to History-based rank scheme, our reputation system can significantly improve system performance under Community-based Random Way-Point (C-RWP) mobility model and localized channel popularity distribution. The performance evaluation under three CRWP scenarios shows that the reputation system brings more performance gain when channel popularity distribution becomes more localized and node mobility become more localized.