Survivability Analysis for Mobile Cellular Networks
David Tipper, Chalermpol Charnsripinyo, Hyundoo Shin, Teresa A. Dahlberg · 2005
The rapid growth of wireless communications has been witnessed from new services and emerging technologies in the past years. As societal dependence on mobile services increases, especially for emergency services, failures that inhibit communications or result in loss of critical data can not be tolerated. This paper discusses the effects of failures and survivability issues in mobile cellular networks with emphasis on the unique difficulties presented by user mobility and the wireless channel environment. A simulation model to study a variety of failure scenarios on a GSM network is described and the results show that user mobility significantly worsens network performance after failures, as disconnected users move among adjacent cells and attempt to reconnect to the network. The result from the analysis suggests that survivability strategies must be designed specifically to contend with spatial as well as temporal network behavior in mobile cellular networks.