Dynamic variable partitioning as a means of sharing mobile satellite spectrum

This paper considers a method of dynamically sharing frequency spectrum between two mobile satellite services, taking advantage of fluctuations in demand for the two services in order to use spectrum more efficiently. The work in this paper was motivated by the need to share spectrum on a dynamic basis between the aeronautical mobile satellite (route) service (AMS(R)S) and other mobile satellite services, with AMS(R)S having absolute priority. Using North American statistics, the expected fluctuations in demand for the two services are examined, providing estimates of improved efficiency that can in general result from the use of dynamic variable partitioning (DVP). An algorithm developed as one possible implementation of DVP is described, followed by the results of computer simulation of this algorithm