Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-10-06
2000-04-04
Trost, William G.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455447, 455450, H04Q 736
Patent
active
060471867
ABSTRACT:
The foregoing objects are achieved as is now described. Provided are a method and system for utilization with wireless communications systems having a cellular architecture covering a geographic area. The method and system accomplish their objects via the following. The geographic area is defined. One or more pairs of the sectors within the defined geographic area wherein a weak connection zone exists are determined. The geographic area is decomposed into two or more sub-areas wherein each sub-area is isolated from other sub-areas by the determined one or more pairs of sectors having a weak connection zone. A first of the sub-areas is selected. Frequency groups are assigned to each sector within the first selected sub-area such that signal to noise ratio is optimized. Thereafter, a second of the sub-areas is selected. One or more sectors within the second selected one of the sub-areas which are linked to sectors within the first selected sub-area are selected. Frequency groups are assigned to the selected sectors within the selected second of the sub-areas such that signal to noise ratio in the selected sector within the selected second of the sub-areas is optimized. Thereafter, frequency groups are assigned to every other sector within the selected second of the sub-areas such that signal to noise ratio is optimized across the second selected sub-area and such that signal to noise ratio over the defined geographic area is optimized.
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patent: 4727590 (1988-02-01), Kawano et al.
patent: 5230081 (1993-07-01), Yamada et al.
patent: 5649292 (1997-07-01), Doner
patent: 5838673 (1998-11-01), Ritz et al.
Han Xu
Madhavapeddy Seshagiri Rao
Subramanian Sairam
Yu Chang
Crane John D.
Dillon Andrew J.
Nortel Networks Corporation
Trinh Sonny
Trost William G.
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