Intelligent Backhaul Radio with receiver performance enhancement
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Accused Products
Abstract
A intelligent backhaul radio is disclosed that is compact, light and low power for street level mounting, operates at 100 Mb/s or higher at ranges of 300 m or longer in obstructed LOS conditions with low latencies of 5 ms or less, can support PTP and PMP topologies, uses radio spectrum resources efficiently and does not require precise physical antenna alignment.
37 Citations
36 Claims
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1-6. -6. (canceled)
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7. A backhaul radio comprising:
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one or more demodulator cores, wherein each demodulator core is capable of demodulating one or more of a plurality of receive symbol streams to produce one or more receive data interface streams; a plurality of receive radio frequency (RF) chains, wherein each receive RF chain is capable of converting from one of a plurality of receive RF signals to a respective one of a plurality of receive chain output signals; a frequency selective receive path channel multiplexer, interposed between the one or more demodulator cores and at least two of the plurality of receive RF chains, wherein the frequency selective receive path channel multiplexer is capable of generating the plurality of receive symbol streams from at least two of the plurality of receive chain output signals provided by said at least two of the plurality of receive RF chains; and an antenna array comprising; a plurality of directive gain antenna elements; and one or more selectable RF connections for selectively coupling certain of the plurality of directive gain antenna elements to certain of the plurality of receive RF chains, said certain of the plurality of receive RF chains including at least one receive RF chain coupled to the frequency selective receive path channel multiplexer, wherein the number of directive gain antenna elements that can be selectively coupled to receive RF chains exceeds the number of receive RF chains that can accept receive RF signals from the one or more selectable RF connections; wherein the backhaul radio is capable of determining an opportunity for a performance enhancement that derives from setting specific selective couplings between the certain of the plurality of directive gain antenna elements and the certain of the plurality of receive RF chains. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A backhaul radio comprising:
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one or more demodulator cores, wherein each demodulator core is capable of demodulating one or more of a plurality of receive symbol streams to produce one or more receive data interface streams; a plurality of receive radio frequency (RF) chains, wherein each receive RF chain is capable of converting from one of a plurality of receive RF signals to a respective one of a plurality of receive chain output signals; a frequency selective receive path channel multiplexer, interposed between the one or more demodulator cores and at least two of the plurality of receive RF chains, wherein the frequency selective receive path channel multiplexer is capable of generating the plurality of receive symbol streams from at least two of the plurality of receive chain output signals provided by said at least two of the plurality of receive RF chains; and an antenna array comprising; a plurality of directive gain antenna elements, wherein at least two of the plurality of directive gain antenna elements are each couplable or coupled to at least one of the plurality of receive RF chains coupled to the frequency selective receive path channel multiplexer; and one or more probe-in-space antenna elements, wherein at least one of the one or more probe-in-space antenna elements has a larger azimuthal coverage pattern than any of said at least two of the plurality of directive gain antenna elements, and wherein said at least one of the one or more probe-in-space antenna elements is couplable or coupled to at least one of the plurality of receive RF chains; wherein the backhaul radio is capable of determining an opportunity for a performance enhancement that derives from at least one of i) changing any attribute of the frequency selective receive path channel multiplexer, ii) changing, with respect to antenna elements that are couplable to more than one of the plurality of receive RF chains, at least one coupling between any of the plurality of directive gain antenna elements or the one or more probe-in-space antenna elements and any of the plurality of receive RF chains, or iii) changing at least one of an RF carrier frequency or a channel bandwidth for at least one of the plurality of receive RF chains; and wherein said determining an opportunity for a performance enhancement includes detecting one or more interfering signals at at least one of the one or more probe-in-space antenna elements. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A backhaul radio comprising:
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one or more demodulator cores, wherein each demodulator core is capable of demodulating one or more of a plurality of receive symbol streams to produce one or more receive data interface streams; a plurality of receive radio frequency (RF) chains, wherein each receive RF chain is capable of converting from one of a plurality of receive RF signals to a respective one of a plurality of receive chain output signals; a frequency selective receive path channel multiplexer, interposed between the one or more demodulator cores and at least two of the plurality of receive RF chains, wherein the frequency selective receive path channel multiplexer is capable of generating the plurality of receive symbol streams from at least two of the plurality of receive chain output signals provided by said at least two of the plurality of receive RF chains; and an antenna array comprising; a plurality of directive gain antenna elements, wherein at least two of the plurality of directive gain antenna elements are each couplable or coupled to at least one of the plurality of receive RF chains coupled to the frequency selective receive path channel multiplexer, thereby producing one or more first respective receive chain output signals; and one or more probe-in-space antenna elements, wherein at least one of the one or more probe-in-space antenna elements has a larger azimuthal coverage pattern than any of said at least two of the plurality of directive gain antenna elements, and wherein said at least one of the one or more probe-in-space antenna elements is couplable or coupled to at least one of the plurality of receive RF chains coupled to the frequency selective receive path channel multiplexer, thereby producing one or more second respective receive chain output signals; wherein the backhaul radio is capable of combining the one or more first respective receive chain output signals with the one or more second respective receive chain output signals for a performance enhancement. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification