Distributed automatic gain control system
First Claim
Patent Images
1. A wireless distribution system, comprising:
- a plurality of remote units distributed in a coverage area to receive upstream wireless signals;
a plurality of input ports to receive signals comprising the upstream wireless signals provided by the plurality of remote units;
a plurality of input power monitors operatively connected to one or more of the plurality of input ports to determine power levels of signals received at the input ports;
a plurality of variable gain controllers to control the gain of signals received at the one or more of the plurality of input ports in response to a plurality of corresponding control signals;
a node to combine a plurality of signals from the plurality of input ports; and
a controller to provide the plurality of corresponding control signals to individually control each of the variable gain controllers.
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Abstract
A wireless distribution system includes a number of remote units distributed in a coverage area to receive wireless signals and to provide the signals through the distribution system to input ports of a node where the signals are combined, a number of input power monitors operatively connected to one or more of the input ports to determine power levels of signals received at the input ports, variable gain controllers to control signals received at some or all of the input ports, a node to combine a plurality of signals from the plurality of input ports, and a controller to provide control signals to control one or more of the variable gain controllers.
142 Citations
27 Claims
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1. A wireless distribution system, comprising:
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a plurality of remote units distributed in a coverage area to receive upstream wireless signals; a plurality of input ports to receive signals comprising the upstream wireless signals provided by the plurality of remote units; a plurality of input power monitors operatively connected to one or more of the plurality of input ports to determine power levels of signals received at the input ports; a plurality of variable gain controllers to control the gain of signals received at the one or more of the plurality of input ports in response to a plurality of corresponding control signals; a node to combine a plurality of signals from the plurality of input ports; and a controller to provide the plurality of corresponding control signals to individually control each of the variable gain controllers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless distribution system, comprising:
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a plurality of remote units distributed in a coverage area to receive upstream wireless signals in the coverage area; a node to combine a plurality of upstream wireless signals from one or more of the plurality of remote units; a power monitor to determine a power level of the upstream wireless signals combined at the node; and a variable gain controller to control the gain of the upstream wireless signals combined at the node. - View Dependent Claims (9, 10, 11, 12)
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13. A method for controlling the signal levels of a wireless distribution system, the method comprising:
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receiving a plurality of upstream wireless signals at one or more remote units distributed in a coverage area; transmitting the received signals over one or more transmission links to a node in an upstream expansion unit where the signals are digitally combined; monitoring the power level of the combined signals at the node; and controlling the gain of the combined signals in response to the monitored power level. - View Dependent Claims (14, 15, 16)
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17. A method for controlling the signal levels of a wireless distribution system, the method comprising:
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receiving upstream wireless signals at a plurality of remote units distributed in a coverage area; providing signals from the remote units to a plurality of input ports in an upstream expansion unit; monitoring input power levels of the signals received at one or more of the plurality of input ports; digitally combining signals from the plurality of input ports at a node; determining individual control signals for each of the input ports; and gain controlling the signals received at the input ports in response to the control signals. - View Dependent Claims (18, 19, 20)
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21. A wireless distribution system comprising:
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a plurality of remote units distributed in a coverage area to receive upstream wireless signals; and an expansion unit coupled to the plurality of remote units to receive signals comprising the wireless signals from each of the plurality of remote units;
wherein the expansion unit is configured to measure the power level of the signals received from each of the plurality of wireless units;
to individually adjust the gain of each signal based on the measured power levels such that the signals do not exceed a predetermined threshold level, and to combine the signals for transmission upstream. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification