A TDMA communication system (100) comprises a two-way subscriber unit (112') and at least two base stations (104b and 104c). The subscriber unit monitors the strengths of signals (114') received from the base stations. As the subscriber unit roams within the area serviced by the communication system,...http://www.google.com/patents/US5159593?utm_source=gb-gplus-sharePatent US5159593 - Channel acquistion and handoff method and apparatus for a TDMA communication system
