3rd Annual International ICST Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services

Research Article

Overload-Driven Mobility-Aware Cache Management in Wireless Environments

  • @INPROCEEDINGS{10.1109/MOBIQ.2006.340399,
        author={Humeyra Topcu-Altintas and  Yun  Huang  and Nalini  Venkatasubramanian},
        title={Overload-Driven Mobility-Aware Cache Management in Wireless Environments},
        proceedings={3rd Annual International ICST Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services},
        publisher={IEEE},
        proceedings_a={MOBIQUITOUS},
        year={2007},
        month={4},
        keywords={},
        doi={10.1109/MOBIQ.2006.340399}
    }
    
  • Humeyra Topcu-Altintas
    Yun Huang
    Nalini Venkatasubramanian
    Year: 2007
    Overload-Driven Mobility-Aware Cache Management in Wireless Environments
    MOBIQUITOUS
    IEEE
    DOI: 10.1109/MOBIQ.2006.340399
Humeyra Topcu-Altintas1,2, Yun Huang 1,2, Nalini Venkatasubramanian1,2
  • 1: School of Information & Computer Sciences,
  • 2: University of California, Irvine

Abstract

In this paper, we propose a novel cache management strategy that uses the notion of "overload" where overload is defined as a situation when there is insufficient proxy cache for a new incoming user in a mobile region. In an overloaded situation, there will be increased network traffic (since the original server will need to be contacted) and increased service delays for mobile hosts (due to cache misses). The proposed techniques attempt to decrease the penalty of overloaded traffic and to reduce the number of remote accesses by increasing cache hit ratio. Our cache replacement algorithm is holistic in that it considers (i) mobility of the clients, (ii) predicted overloads, (iii) sizes of cached objects and (iv) their access frequencies in determining which object's cache (how much cache space) to be replaced, and when to replace. Performance results show that our overload-driven cache management strategy outperforms the existing popular policies