Cellular system plan using in band-translators to enable efficient deployment of high capacity base transceiver systems
First Claim
1. A wireless communication system consisting of a plurality of cells, the plurality of cells being located substantially adjacent one another, and the wireless communication system operating over a specified frequency range, the wireless communication system making use of a frequency allocation plan that arranges the cells into clusters, with each of the cells in a cluster being assigned for use a subset of an entire band of available carrier frequencies in the specified frequency range, the system comprising:
- home base station means including a broadband transceiver system for receiving and transmitting multiple radio signals on multiple carrier frequencies, including means for demodulating said received radio signals and for coupling demodulated signals to a switching means, and means for modulating signals received from the switching means and coupling them for radio transmission on the multiple carrier frequencies;
a plurality of mobile stations located in a service area covered by the cluster of cells, each mobile station transmitting and receiving a radio signal; and
a plurality of translator base station means each located in one of said plurality of cells in the cluster, each translator base station means including means for receiving a first radio signal from a mobile station located in the cell and translating a carrier frequency of said first received radio signal to another carrier frequency within the specified radio frequency range to produce a first translated signal and then transmitting said first translated signal to the home base station means, and also including means for receiving a second radio signal from said home base station means and translating a carrier frequency of said second received radio signal to another carrier frequency within the specified radio frequency range, to produce a second translated signal, and then transmitting said second translated signal to said mobile station, such that the carrier frequencies of said first translated signal and said second translated signal are each assigned from different ones of a plurality of groups of the carrier frequencies in the available band of carrier frequencies.
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Accused Products
Abstract
A wireless system architecture whereby high efficiency broadband transceiver systems can be deployed at an initial build out stage of the system in a cost-efficient manner. A home base station location is identified within each cluster of cells and rather than deploy a complete suite of base station equipment at each of the cells in the cluster, inexpensive translator units are located in the outlying cells serviced by the home base station in which low traffic density is expected. The translators are connected to directional antennas arranged to point back to the home base station site. The translators are deployed in such a way which meshes with the eventually intended frequency reuse for the entire cluster of cells. The translator to base station radio links operate in-band, that is, within the frequencies assigned to the service provider. For example, the available frequency bands are divided into at least two sub-bands, with a first sub-band is assigned for use as a home base station to translator base station communication link and a second sub band is assigned for use by the mobile station to translator communication link. If desired, a third sub-band can then be used for deployment of base transceiver systems in the conventional fashion where the base station equipment located at the center of a cell site communicates only with mobile stations located within that cell.
132 Citations
11 Claims
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1. A wireless communication system consisting of a plurality of cells, the plurality of cells being located substantially adjacent one another, and the wireless communication system operating over a specified frequency range, the wireless communication system making use of a frequency allocation plan that arranges the cells into clusters, with each of the cells in a cluster being assigned for use a subset of an entire band of available carrier frequencies in the specified frequency range, the system comprising:
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home base station means including a broadband transceiver system for receiving and transmitting multiple radio signals on multiple carrier frequencies, including means for demodulating said received radio signals and for coupling demodulated signals to a switching means, and means for modulating signals received from the switching means and coupling them for radio transmission on the multiple carrier frequencies; a plurality of mobile stations located in a service area covered by the cluster of cells, each mobile station transmitting and receiving a radio signal; and a plurality of translator base station means each located in one of said plurality of cells in the cluster, each translator base station means including means for receiving a first radio signal from a mobile station located in the cell and translating a carrier frequency of said first received radio signal to another carrier frequency within the specified radio frequency range to produce a first translated signal and then transmitting said first translated signal to the home base station means, and also including means for receiving a second radio signal from said home base station means and translating a carrier frequency of said second received radio signal to another carrier frequency within the specified radio frequency range, to produce a second translated signal, and then transmitting said second translated signal to said mobile station, such that the carrier frequencies of said first translated signal and said second translated signal are each assigned from different ones of a plurality of groups of the carrier frequencies in the available band of carrier frequencies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification