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US Patent 6154654 - System and method for frequency reuse in a four cell plan
US Patent Issued on November 28, 2000
Estimated Patent Expiration Date:
May 7, 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.
Estimated Patent Expiration Date:
May 7, 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.AbstractA telecommunications system and method for a frequency re-use plan is disclosed which reduces the adjacent channel interference between cells, while maintaining good co-channel interference in a four cell frequency reuse plan with a center-excited three sector directional pattern. This can be accomplished by structuring the four cell frequency reuse plan such that no adjacent cells use adjacent channels. As a result, the adjacent channel interference can be minimized, the radio coverage can be extended and in-building penetration can be improved. | InventorApplicationNo. 074253 filed on 05/07/1998US Classes:455/446, Including cell planning or layout455/447, Frequency reuse scheme455/449, Hierarchical cell structure455/450Channel allocationField of Search455/446, Including cell planning or layout455/447, Frequency reuse scheme455/450, Channel allocation455/449Hierarchical cell structureExaminersPrimary: Hunter, Daniel S.Assistant: Gantt, Alan T. Attorney, Agent or FirmUS Patent References5247699, Cellular frequency reuse cell planIssued on: 09/21/1993 Inventor: Hartman5365571, Cellular system having frequency plan and cell layout with reduced co-channel interference Issued on: 11/15/1994 Inventor: Rha, et al.5708968, Channel segregation method Issued on: 01/13/1998 Inventor: Suzuki5734983, Frequency assignment in a cellular radio system Issued on: 03/31/1998 Inventor: Faruque5924037, Frequency assigning method in a seven cell frequency plan for a cellular communications system without adjacent frequencies Issued on: 07/13/1999 Inventor: Mao6002935Wireless communications cellular architecture for improving communications resource allocation Issued on: 12/14/1999 Inventor: Wang International ClassesH04Q 007/20H04Q 007/36 |
