Point-to-multipoint digital radio frequency transport
DC CAFCFirst Claim
Patent Images
1. A system for wireless radio frequency signal distribution within a coverage area in which one or more wireless units wirelessly transmit in an upstream wireless radio frequency spectrum, the system comprising:
- a host unit; and
a plurality of remote units communicatively coupled to the host unit using at least one communication medium, wherein each of the plurality of remote units is associated with a portion of the coverage area;
wherein each of the plurality of remote units receives a respective original upstream analog wireless signal comprising the upstream radio frequency spectrum and any upstream transmissions from any of the wireless units that are within the portion of the coverage area associated with that remote unit;
wherein each of the plurality of remote units generates respective upstream digital RF samples indicative of the respective original upstream analog wireless signal received at that remote unit;
wherein each of the plurality of remote units communicates the respective upstream digital RF samples generated by that remote unit to the host unit using the at least one communication medium;
wherein the host unit digitally sums corresponding upstream digital RF samples received from the plurality of remote units to produce summed upstream digital RF samples; and
wherein the host unit converts the summed upstream digital RF samples to a replicated upstream analog wireless radio frequency signal.
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Abstract
A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.
66 Citations
28 Claims
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1. A system for wireless radio frequency signal distribution within a coverage area in which one or more wireless units wirelessly transmit in an upstream wireless radio frequency spectrum, the system comprising:
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a host unit; and a plurality of remote units communicatively coupled to the host unit using at least one communication medium, wherein each of the plurality of remote units is associated with a portion of the coverage area; wherein each of the plurality of remote units receives a respective original upstream analog wireless signal comprising the upstream radio frequency spectrum and any upstream transmissions from any of the wireless units that are within the portion of the coverage area associated with that remote unit; wherein each of the plurality of remote units generates respective upstream digital RF samples indicative of the respective original upstream analog wireless signal received at that remote unit; wherein each of the plurality of remote units communicates the respective upstream digital RF samples generated by that remote unit to the host unit using the at least one communication medium; wherein the host unit digitally sums corresponding upstream digital RF samples received from the plurality of remote units to produce summed upstream digital RF samples; and wherein the host unit converts the summed upstream digital RF samples to a replicated upstream analog wireless radio frequency signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A host unit for wireless radio frequency signal distribution within a coverage area in which one or more wireless units transmit in an upstream wireless radio frequency spectrum, the host unit comprising:
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an interface to communicatively couple the host unit to a plurality of remote units using at least one communication medium, wherein each of the plurality of remote units is associated with a portion of the coverage area and each of the plurality of remote units receives a respective original upstream analog wireless signal comprising the upstream radio frequency spectrum and any upstream transmissions from any of the wireless units that are within the portion of the coverage area associated with that remote unit and wherein each of the plurality of remote units generates respective upstream digital RF samples indicative of the respective original upstream analog wireless signal received at that remote unit, wherein the interface is used to receive the upstream digital RF samples from the plurality of remote units; a digital summer to digitally sum corresponding upstream digital RF samples received from the plurality of remote units to produce summed upstream digital RF samples; and a digital-to-analog converter to convert the summed upstream digital RF samples to a replicated upstream analog wireless radio frequency signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A digital expansion unit for wireless radio frequency signal distribution within a coverage area in which one or more wireless units transmit in an upstream wireless radio frequency spectrum, the digital expansion unit comprising:
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a host unit interface to communicatively couple the digital expansion unit to a host unit; a remote unit interface to communicatively couple the digital expansion unit to a plurality of remote units, wherein each of the plurality of remote units is associated with a portion of the coverage area and each of the plurality of remote units receives a respective original upstream analog wireless signal comprising the upstream radio frequency spectrum and any upstream transmissions from any of the wireless units that are within the portion of the coverage area associated with that remote unit and wherein each of the plurality of remote units generates respective upstream digital RF samples indicative of the respective original upstream analog wireless signal received at that remote unit, wherein the remote unit interface is used to receive the upstream digital RF samples from the plurality of remote units; and a digital summer to digitally sum corresponding upstream digital RF samples received from the plurality of remote units to produce summed upstream digital RF samples; and wherein the digital expansion unit communicates at least a portion of the summed upstream digital RF samples to the host unit. - View Dependent Claims (22, 23, 24)
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25. A method of distributing wireless radio frequency signals within a coverage area in which one or more wireless units transmit in an upstream wireless radio frequency spectrum, the method using a host unit and a plurality of remote units, each of the plurality of remote units being associated with a portion of the coverage area, the method comprising:
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at each of the plurality of remote units; receiving a respective original upstream analog wireless signal comprising the upstream radio frequency spectrum and any upstream transmissions from any of the wireless units that are within the portion of the coverage area associated with that remote unit; generating respective upstream digital RF samples indicative of the respective original upstream analog wireless signal received at that remote unit; and communicating the respective upstream digital RF samples generated by that remote unit to the host unit using at least one communication medium; and at the host unit; digitally summing corresponding upstream digital RF samples received from the plurality of remote units to produce summed upstream digital RF samples; and converting the summed upstream digital RF samples to a replicated upstream analog wireless radio frequency signal. - View Dependent Claims (26, 27, 28)
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Specification