Patent ReferencesSystem and method for providing soft handoff of a cellular mobile-to-mobile call Transmission system for transmitting information at various rates and transmitter station and receiver station suitable for such a system Hand-off management for cellular telephony Method and apparatus for supporting mobile communications in asynchronous transfer mode based networks Virtual circuit management in cellular telecommunications Multiservices medium access control protocol for wireless ATM system Reliable ATM microwave link and network Method and system for distributed control in wireless cellular and personal communication systems Method for controlling components of a communication system Distributed telecommunications system InventorsAssigneeApplicationNo. 215527 filed on 12/18/1998US Classes:370/331, Hand-off control370/397, Employing logical addressing for routing (e.g., VP or VC)455/442Soft handoffExaminersPrimary: Kizou, HassanAssistant: Pezzlo, John Foreign Patent References
International ClassesH04L 012/56H04Q 007/00 AbstractA radio communications system (10) having a mobile station (30) and at least two base stations (13, 14). ATM radio channels (31, 32) are provided between the remote station and base stations. Each of the ATM channels supports communication though ATM cells over a common frequency band. At least one ATM node (21) is coupled to the base stations. A base station controller (11) is coupled to the ATM node. The base station controller has a combiner (303) for combining cell streams received from the first and second base stations and an ATM signalling circuit (330) for sending ATM commands to the ATM node for dividing cell streams at the ATM node to the first and second base stations. The remote station (30) has a logic unit (520) for combining cell streams received from the first and second base stations during a handoff from the first base station to the second base station.Field of SearchHand-off controlHaving a plurality of contiguous regions served by respective fixed stations Based upon a particular signal quality measurement Signal quality determined by bit error rate Multiple access (e.g., TDMA) Using messages having an address field as header Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA) Employing logical addressing for routing (e.g., VP or VC) Handoff Soft handoff | |