Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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US Patent 5999815 - Method and apparatus for implementing diversity for a dual-mode communication unit
Estimated Patent Expiration Date:
July 8, 2018Estimated 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.AbstractThe present invention provides a method for implementing diversity for a dual-mode communication unit in a communication system. The communication system includes a first transceiver utilizing a first air interface and a second transceiver utilizing a second air interface distinct from the first air interface. The system also includes a controller that includes a selector function. The dual-mode communication unit transmits a first copy of bearer data to the first transceiver utilizing the first air interface. The dual-mode communication unit transmits a second copy of the bearer data to the second transceiver utilizing the second air interface. The first transceiver and the second transceiver sending the copy of the bearer data to the controller. The first transceiver and the second transceiver also send a quality metric to the controller. The controller selects a preferred copy of the bearer data based at least in part upon the quality metrics. | InventorsAssigneeApplicationNo. 111974 filed on 07/08/1998US Classes:455/436, Handoff455/426.1, Including other radio communication system (e.g., cordless telephone, paging, trunking, etc.)455/553.1Radiotelephone having plural transceivers (e.g., for analog and digital, trunking and cellular, etc.)Field of Search455/436, Handoff455/437, Mobile assisted or initiated455/438, Serving site initiated455/440, Based upon unit location455/442, Soft handoff455/445, Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)455/458Specific paging techniqueExaminersPrimary: Le, Thanh CongAttorney, Agent or FirmUS Patent References5737703, Multi-mode radio telephone which executes handover between different systemIssued on: 04/07/1998 Inventor: Byrne5887260, Mobile communication apparatus, fixed communicaton apparatus, communication system and communication method Issued on: 03/23/1999 Inventor: Nakata5930712Dual mode subscriber terminal, single mode subscriber terminal and a handover procedure of the dual mode subscriber terminal and the single mode subscriber terminal in a mobile telecommunications network Issued on: 07/27/1999 Inventor: Byrne, et al. International ClassH04Q 007/00 |
