On the retrial and redial phenomena in GSM networks

Onur E., Delic H., Ersoy C., Caglayan M.

IEEE Wireless Communications and Networking Conference, Illinois, United States Of America, 23 - 28 September 2000, pp.885-889 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: Illinois
  • Country: United States Of America
  • Page Numbers: pp.885-889


GSM operators work with call data that include retrials and redials as well. Based on these inflated, virtual call attempt statistics, it appears that enormous demands are put on the available spectrum. In this paper, we develop simple models to estimate the expected number of retrials and redials per original call attempt, which is used to determine the effective load and the number of traffic channels required to meet the grade of service. It is shown that significantly fewer channels are capable of handling high traffic loads.