Frequency assignment in a cellular radio system
Patent 5734983 Issued on March 31, 1998. Estimated Expiration Date: 
June 20, 2016. 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.
June 20, 2016. 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 ReferencesCellular radiotelephone communications system Method for assigning telecommunications channels in a cellular telephone system Method and system network for providing an area with limited bandwidth bi-direction burst personnel telecommunications Cellular frequency reuse cell plan Cellular system having frequency plan and cell layout with reduced co-channel interference Patent #: 5365571 InventorAssigneeApplicationNo. 667208 filed on 06/20/1996US Classes:455/450, Channel allocation455/446, Including cell planning or layout455/447, Frequency reuse scheme455/449Hierarchical cell structureExaminersPrimary: Urban, Edward F.Assistant: Arthur, Gertrude Attorney, Agent or FirmInternational ClassH04Q 007/20AbstractThe N=4 frequency layout plan of the present invention is based on dividing up the available frequencies into 12 or a multiple of 12 frequency groups. These groups are then distributed evenly and alternately among four tri-cell groups. Each tri-cell group is comprised of three identical cells that are driven by a single source located in the center of the tri-cell group. In the preferred embodiment, the frequency distribution is a horizontal distribution of first the odd frequencies then the even frequencies so that there are no adjacent channels.Other References
Field of SearchOptimum frequency selectionPlural separate transmitters or channels Cell projection Overlapping cells Between macro and micro cells Including cell planning or layout Frequency reuse scheme Hierarchical cell structure Channel allocation Channel selection or allocation Plural transmitters or receivers (i.e., more than two stations) Central station (e.g., master, etc.) | |
