Modified Erlang Loss System for Cognitive Wireless Networks

This paper considers a modified Erlang loss system for cognitive wireless networks and related applications. A primary user has pre-emptive priority over secondary users, the customer is lost if upon arrival all channels are used by other users. Secondary users cognitively use idle channels, they can stay (either in an infinite buffer or orbit) cases where not available interrupted While model represents case with zero sensing time, orbit positive time. We obtain explicit stability condition processes of follow Poisson processes, their service times two distinct arbitrary distributions. The insensitive to time distributions implies maximal throughout Moreover, we extend analysis outgoing calls. For special exponential distributions, analyze buffered depth show effect parameters on delay performance mean number interruptions Our simulations rather than reveal that terminations less sensitive distribution