Scalable Schemes for Mobile Networks with Multiple Services

Abstract

The introduction of new service categories with different bandwidth requirements, e.g., data and multimedia, to cellular mobile radio networks makes many of the traditional mechanisms unusable or less efficient. The call admission and the handover handling are of the most sensitive issues to this extension. The performance of all services including the traditional voice and the new services can be dramatically affected if no appropriate schemes are used. In this paper, we propose call admission and handover handling schemes for a cellular mobile network that offers two service types: voice and data. The data connections are assumed to transmit at different transmission rates that are integer multiples to that of one radio channel. In the case of congestion, the base station asks the active data connections to reduce their transmission rate in order to provide free channels for the newly arrived request of both service types. This is basically intended for incoming handover r..