Wireless personal communication system
September 22, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for eliminating interference due to spurious signals generated in synthesized receivers Method and apparatus for signal strength measurement and antenna selection in cellular radiotelephone systems Wide area cordless telephone system having means for avoiding double registrations PABX cordless telephone system Subscriber RF telephone system for providing multiple speech and/or data singals simultaneously over either a single or a plurality of RF channels Adaptive synchronization arrangement Inbuilding telephone communication system Wireless communication system and wireless terminal device using fixed length communication frame Patent #: 5559804 Inventors
ApplicationNo. 344272 filed on 11/23/1994US Classes:455/445, Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)370/314, Using time division multiplexing370/338, Contiguous regions interconnected by a local area network455/90.2, Having particular configuration (e.g., C.B., or walkie-talkie) of a transceiver455/560Switching unit detail (e.g., mobile telephone switching office (MTSO), base station controller (BSC), etc.)ExaminersPrimary: Harvey, David E.Attorney, Agent or FirmForeign Patent References
International ClassH04J 003/00AbstractThe present invention relates to a wireless personal communications system (WPCS) having several features embodied in several forms. In one embodiment, the, WPCS includes at least one RP, a first SU in communication with the RP, and a second SU in communication with the first SU through the RP without involving the RPC in the manner contemplated by the specification. The RP may preferably include a channel switching unit for connecting the first SU with the second SU without using any tariff lines to or from an RPC. Such an RP may be used as a component in a wireless PBX or Centrex system including ISDN based systems. Another preferred embodiment provides for a walkie-talkie option where the first SU communicates directly with the second SU, preferably over an unlicensed frequency. In another preferred embodiment, a plurality of SUs in communication with an RP may be accessed individually using a single dialed number.Other References
Field of SearchPortable address responsive receiverUsing time division multiplexing Multiple access (e.g., TDMA) Multiple access (e.g., TDMA) Channel reservation scheme RADIOTELEPHONE SYSTEM Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing) Channel allocation Load balancing Including private cordless extension system Multi-users Channel selection or allocation Including public cordless extension system Auxiliary data signaling (e.g., short message service (SMS)) Wireless private branch exchange (PBX) (i.e., wireless link to extension unit) Number assignment module (NAM) detail Switching unit detail (e.g., mobile telephone switching office (MTSO), base station controller (BSC), etc.) Base station detail | |
