Distributed antenna system architectures
First Claim
Patent Images
1. A wireless communication system, comprising:
- a head end unit configured to electronically receive and convert input downlink radio frequency (RF) signals received from at least one source to optical downlink RF signals to be distributed on an optical communication path comprising a plurality of optical fiber cables and at least one splitter component;
an optical line terminal (OLT) configured to receive and distribute optical multiplexed data signals on the optical communication path;
at least one optical network terminal (ONT) component located proximate to at least one remote unit and configured to demultiplex the optical multiplexed data signals into component parts;
a plurality of remote units each coupled to the head end unit and the OLT by the optical communication path to receive the optical downlink RF signals and the optical multiplexed data signals from the head end unit and the OLT, each remote unit of the plurality of remote units configured to receive power delivered from an electrical power source located in a respective coverage area of one or more of the plurality of the remote units, wherein each remote unit comprises;
an optical-to-electrical converter configured to convert the received optical downlink RF signals to output electrical downlink RF signals; and
an antenna system configured to distribute the output electrical downlink RF signals into a respective coverage area of the remote unit; and
an electrically conductive cable connecting the at least one ONT component to at least one of the plurality of remote units, the electrically conductive cable configured to provide power from the at least one ONT component to the at least one remote unit.
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Abstract
Optical fiber-based wireless systems and related components and methods are disclosed. The systems support radio frequency (RF) communications with clients over optical fiber, including Radio-over-Fiber (RoF) communications. The systems may be provided as part of an indoor distributed antenna system (IDAS) to provide wireless communication services to clients inside a building or other facility. The systems incorporate various functions, such as optical network terminal (ONT), splitter, and local powering, in antenna coverage areas.
920 Citations
16 Claims
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1. A wireless communication system, comprising:
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a head end unit configured to electronically receive and convert input downlink radio frequency (RF) signals received from at least one source to optical downlink RF signals to be distributed on an optical communication path comprising a plurality of optical fiber cables and at least one splitter component; an optical line terminal (OLT) configured to receive and distribute optical multiplexed data signals on the optical communication path; at least one optical network terminal (ONT) component located proximate to at least one remote unit and configured to demultiplex the optical multiplexed data signals into component parts; a plurality of remote units each coupled to the head end unit and the OLT by the optical communication path to receive the optical downlink RF signals and the optical multiplexed data signals from the head end unit and the OLT, each remote unit of the plurality of remote units configured to receive power delivered from an electrical power source located in a respective coverage area of one or more of the plurality of the remote units, wherein each remote unit comprises; an optical-to-electrical converter configured to convert the received optical downlink RF signals to output electrical downlink RF signals; and an antenna system configured to distribute the output electrical downlink RF signals into a respective coverage area of the remote unit; and an electrically conductive cable connecting the at least one ONT component to at least one of the plurality of remote units, the electrically conductive cable configured to provide power from the at least one ONT component to the at least one remote unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless communication system configured to electronically receive and convert input electrical downlink radio frequency (RF) signals received from at least one source to optical downlink RF signals to be distributed on an optical communication path and comprising:
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an optical line terminal (OLT) configured to receive and distribute optical multiplexed data signals on the optical communication path, the optical communication path including at least one splitter component with at least one input fiber and a plurality of output fibers, the at least one splitter component being capable of routing the optical downlink RF signals and the optical multiplexed data signals based on at least one of wavelength and polarization; at least one optical network terminal (ONT) component located proximate to at least one remote unit and configured to demultiplex the optical multiplexed data signals into component parts; a plurality of remote units each coupled to the OLT by the optical communication path to receive the optical downlink RF signals and the optical multiplexed data signals, each remote unit of the plurality of remote units configured to receive power delivered from an electrical power source located in a respective coverage area of one or more of the plurality of the remote units, wherein each remote unit comprises; an optical-to-electrical converter configured to convert the received optical downlink RF signals to output electrical downlink RF signals; and an antenna system configured to distribute the output electrical downlink RF signals into a respective coverage area of the remote unit; and an electrically conductive cable connecting the at least one ONT component to at least one remote unit of at least one of the plurality of remote units, the electrically conductive cable configured to provide power from the at least one ONT component to the at least one remote unit. - View Dependent Claims (9, 10, 11, 12)
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13. A wireless communication system configured to receive and convert input downlink radio frequency (RF) signals received from at least one source to optical downlink RF signals to be distributed on an optical communication path and comprising:
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an optical line terminal (OLT) configured to receive and distribute optical multiplexed data signals on the optical communication path; at least one optical network terminal (ONT) component located proximate to at least one remote unit and configured to demultiplex the optical multiplexed data signals into component parts; a plurality of remote units each coupled to the OLT by the optical communication path to receive the optical downlink RF signals and the optical multiplexed data signals, each remote unit of the plurality of remote units configured to receive power delivered from an electrical power source located in a respective coverage area of one or more of the plurality of the remote units, wherein each remote unit comprises; an optical-to-electrical converter configured to convert the received optical downlink RF signals to output electrical downlink RF signals; and an antenna system configured to distribute the output electrical downlink RF signals into a respective coverage area of the remote unit; and an electrically conductive cable connecting the at least one ONT component to at least one remote unit of at least one of the plurality of remote units, the electrically conductive cable configured to provide power from the at least one ONT component to the at least one remote unit, wherein the plurality of remote units comprises at least five remote units deployed on multiple floors of the building infrastructure, the wireless communication system including an electrical power source for each remote unit. - View Dependent Claims (14, 15, 16)
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Specification