Performance analysis of a simulcast based mobile multiservice network

Abstract

A simulcast based cellular network architecture is considered for mobile telecommunication systems. The architecture increases the overlap areas between adjacent cells without compromising geographical coverage. The resulting increased cell overlap areas reduce problems of weak received signal strengths and high handoff call dropping rates in current cellular network systems that are not designed to have significant cell overlap areas. A mobile multiservice system supporting two types of constant bit rate calls and which adopts the simulcast based cellular network architecture is analyzed and compared to one that uses the current cellular network architecture. In both systems, the guard channel bandwidth allocation policy is used to handle handoff calls. It is shown that the simulcast based cellular network architecture improves the call blocking probabilities of both traffic types. For a given number of active calls, call dropping probabilities are comparable to those obtained using the current cellular network architecture. As a result, the simulcast based cellular network architecture is able to carry more traffic than the current cellular network architecture.