초록 ▼

A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having an assigned set of identification codes, are arranged with means for maintaining continuous communication with mobile telephones moving from cell to cell. The system allows multiple access by in

A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having an assigned set of identification codes, are arranged with means for maintaining continuous communication with mobile telephones moving from cell to cell. The system allows multiple access by including means for assigning at least one of the in the assigned set of identification codes to more than one mobile telephone. A unique identification code is assigned to a mobile telephone located in the cell. A signal having a unique identification code is generated for identifying the mobile telephone. The signal is coupled to the zones. A combiner is also provided for combining signals from all of the zones in the cell. A receiver is coupled to the combiner for retrieving the signals having the code. According to another aspect of the invention, the signal coupled to the zones is delayed so that the transmission of the signal among the plurality of antenna sets is delayed by a preselected amount so as to reduce interference caused by successive reception of signals.

대표청구항 ▼

[ What is claimed is:] [1.] An antenna system for a cellular telephone system, wherein the cellular telephone system comprises a plurality of cells, each of the cells being comprised of at least one zone, each of the cells having an assigned set of identification codes, and each of the identificatio

[ What is claimed is:] [1.] An antenna system for a cellular telephone system, wherein the cellular telephone system comprises a plurality of cells, each of the cells being comprised of at least one zone, each of the cells having an assigned set of identification codes, and each of the identification codes being used to encode radio frequency (RF) signals communicated to a mobile telephone within the cell, comprising:a plurality of antennae coupled to a transceiver for transmitting and receiving the RF signals at assigned frequencies for communicating with mobile telephones within the cell, wherein a plurality of the mobile telephones simultaneously use an identical assigned frequency and a different one of the identification codes assigned to the cell;a directionality apparatus, coupled to the antennae, for maintaining communications with the mobile telephones by selectively coupling the transceiver to the antennae as the mobile telephones move about the cell while using the same identification codes for each of the mobile telephones; andcircuitry, coupled to the antennae, for maintaining communications with the mobile telephones by changing the identification codes for each of the mobile telephones as they move from cell to cell.