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US 4,932,049 AGranted
Cellular telephone system
AssigneePacTel Corporation
InventorWilliam C. Lee
Life of this patent
Estimating the term…
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AssigneePacTel Corporation
InventorWilliam C. Lee
Estimating the term…
A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having a different assigned set of transmission frequency channels, are arranged with handoff circuitry for maintaining continuous communication with mobile telephones moving from cell to cell. The system includes at least one cell having a plurality of transmitting and receiving antenna sets. Each set is positioned at a respective antenna sub-site at the perpihery of the cell or other suitable location, and is configured so that propagation and reception of signals is limited to substantially within the boundaries of the cell. Control circuitry monitor the strength of the signal received by each of the antenna sets at each frequency channel in the assigned set. Transmission, at each frequency channel in the assigned set, is confined to the antenna set at one sub-site in the cell having the strongest received signal at each frequency.
In a cellular telephone system wherein a plurality of contiguous cells, each having a different assigned set of transmission frequencies, are arranged with handoff means for maintaining continuous communication with mobile telephones moving from cell to cell, at least one of said cells comprising:
A cellular telephone system including a plurality of contiguous cells, each of said cells having different assigned sets of transmission frequencies, said cells being arranged with handoff means for maintaining continuous communication with mobile telephones moving from cell to cell, at least one of said cells comprising,
Dependencies are inferred from the claim text.