Proxy-based wireless data access algorithms in mobile hotspots

Sangheon Pack, Humphrey Rutagemwa, Xuemin Shen, Jon W. Mark, Kunwoo Park

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


In this paper, we investigate efficient wireless data access algorithms in mobile hotspots. We introduce a proxy cache (PC) and propose PC-based poll-each-read (P-PER) and PC-based callback (P-CB) data access algorithms to reduce the transmission cost over wireless links in mobile hotspots. An analytical model is developed, and extensive simulations are conducted to demonstrate the performance of P-PER and P-CB. It is shown that P-PER and P-CB can improve cache hit performance and significantly reduce transmission cost. A tradeoff between P-PER and P-CB suggests the need to use a hybrid proxy-based approach to attain optimal performance of wireless data access in mobile hotspots.

Original languageEnglish
Pages (from-to)3165-3177
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Issue number5
Publication statusPublished - 2008


  • Callback (CB)
  • Mobile hotspots
  • Poll-each-read (PER)
  • Proxy cache (PC)-based CB (P-CB)
  • Proxy cache (PC)-based PER (P-PER)
  • Wireless data access

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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