In a multi-reuse level cellular communications system, a channel is assigned for use by a mobile unit by first determining whether the mobile unit is a non-enhanced mobile unit or an enhanced mobile unit. Then a determination is made as to the type of communication service being requested. A minimum...http://www.google.com/patents/US6091954?utm_source=gb-gplus-sharePatent US6091954 - Channel assignment in enhanced fixed-plan mobile communications systems