Handover prioritised schemes for optimal capacity and overload management in cellular mobile systems

This paper analyses the capacity maximisation in the presence of new calls and handovers (HO) in cellular mobile systems. The analysis of HO prioritisation, leads to the definition of the optimal system configuration (e.g., number of guard channels). It is shown that a 'guard channels' based scheme does not maximise but approximates the maximum capacity. A new HO prioritised scheme, that maximises the cell capacity, is then proposed. The scheme uses 'unequally shared channels', which are allocated to new calls and HO with a different priority guided by a control parameter. Finally, an analysis on the system behaviour during overload conditions leads to the identification of the optimal scheme control.