FW-DAS: Fast wireless data access scheme in mobile networks

Giwon Lee, Insun Jang, Sangheon Pack, Xuemin Shen

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In wireless data access applications, reduction of both the access latency and the wireless traffic volume is essential. In this paper, we propose a fast wireless data access scheme (FW-DAS) for wireless data access applications in which data objects are frequently updated and fast access to data objects is indispensable. In FW-DAS, different operation modes are defined depending on the data object popularity, and only popular data objects are proactively pushed to the access point/base station to minimize the access latency while mitigating the traffic load over the wireless link. An analytical model for the access latency is developed and an operation mode selection algorithm is introduced to reduce the access latency. Extensive simulation results show the effects of access-to-update ratio, data popularity, cache size, data object size, and wireless bandwidth. Analytical and simulation results demonstrate that FW-DAS can reduce the access latency with reasonable traffic load compared with poll-each-read (PER)/callback (CB) and their combinations.

Original languageEnglish
Article number6781639
Pages (from-to)4260-4272
Number of pages13
JournalIEEE Transactions on Wireless Communications
Issue number8
Publication statusPublished - 2014 Aug


  • Cloud-based services
  • Fast wireless data access scheme (FW-DAS)
  • Strong consistency
  • Wireless data access

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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