BACKHAUL RADIO WITH ANTENNA ARRAY AND MULTIPLE RF CARRIER FREQUENCIES
First Claim
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1. A backhaul radio for exchanging one or more data interface streams with one or more other backhaul radios, said backhaul radio comprising:
- a plurality of receive radio frequency (RF) chains, wherein each of the plurality of receive RF chains is configured to convert from a respective one of a plurality of receive RF signals within a receive frequency band to a respective one of a plurality of receive chain output signals;
a plurality of transmit radio frequency (RF) chains, wherein each of the plurality of transmit RF chains is configured to convert from a respective one of a plurality of transmit chain input signals to a respective one of a plurality of transmit RF signals within a transmit frequency band;
a plurality of directive gain antenna elements, wherein each of the plurality of directive gain antenna elements is configured to operate over at least both of the transmit frequency band and the receive frequency band; and
a plurality of duplexer filters, wherein each duplexer filter comprises at least a receive band-select filter configured to selectively pass RF signals within the receive frequency band and a transmit band-select filter configured to selectively pass RF signals within the transmit frequency band, wherein each duplexer filter is couplable or coupled to at least one of the plurality of directive gain antenna elements, wherein the receive band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of receive RF chains, and wherein the transmit band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of transmit RF chains;
wherein the backhaul radio is configured to operate at least a first subset of the plurality of transmit RF chains at a first transmit RF carrier frequency and to operate at least a second subset of the plurality of transmit RF chains at a second transmit RF carrier frequency; and
wherein the backhaul radio is further configured to select at least one of the first transmit RF carrier frequency or the second transmit RF carrier frequency in response to at least a current link condition at an at least one of the one or more other backhaul radios.
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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.
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Citations
41 Claims
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1. A backhaul radio for exchanging one or more data interface streams with one or more other backhaul radios, said backhaul radio comprising:
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a plurality of receive radio frequency (RF) chains, wherein each of the plurality of receive RF chains is configured to convert from a respective one of a plurality of receive RF signals within a receive frequency band to a respective one of a plurality of receive chain output signals; a plurality of transmit radio frequency (RF) chains, wherein each of the plurality of transmit RF chains is configured to convert from a respective one of a plurality of transmit chain input signals to a respective one of a plurality of transmit RF signals within a transmit frequency band; a plurality of directive gain antenna elements, wherein each of the plurality of directive gain antenna elements is configured to operate over at least both of the transmit frequency band and the receive frequency band; and a plurality of duplexer filters, wherein each duplexer filter comprises at least a receive band-select filter configured to selectively pass RF signals within the receive frequency band and a transmit band-select filter configured to selectively pass RF signals within the transmit frequency band, wherein each duplexer filter is couplable or coupled to at least one of the plurality of directive gain antenna elements, wherein the receive band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of receive RF chains, and wherein the transmit band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of transmit RF chains; wherein the backhaul radio is configured to operate at least a first subset of the plurality of transmit RF chains at a first transmit RF carrier frequency and to operate at least a second subset of the plurality of transmit RF chains at a second transmit RF carrier frequency; and wherein the backhaul radio is further configured to select at least one of the first transmit RF carrier frequency or the second transmit RF carrier frequency in response to at least a current link condition at an at least one of the one or more other backhaul radios. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A backhaul radio for exchanging one or more data interface streams with one or more other backhaul radios, said backhaul radio comprising:
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a plurality of receive radio frequency (RF) chains, wherein each of the plurality of receive RF chains is configured to convert from a respective one of a plurality of receive RF signals within a receive frequency band to a respective one of a plurality of receive chain output signals; a plurality of transmit radio frequency (RF) chains, wherein each of the plurality of transmit RF chains is configured to convert from a respective one of a plurality of transmit chain input signals to a respective one of a plurality of transmit RF signals within a transmit frequency band; and a plurality of directive gain antenna elements, wherein a first subset of the plurality of directive gain antenna elements is configured to operate over at least the transmit frequency band and is couplable or coupled to at least one the plurality of transmit RF chains and a second subset of the plurality of directive gain antenna elements is configured to operate over at least the receive frequency band and is couplable or coupled to at least one the plurality of receive RF chains; wherein the backhaul radio is configured to operate at least a first subset of the plurality of transmit RF chains at a first transmit RF carrier frequency and to operate at least a second subset of the plurality of transmit RF chains at a second transmit RF carrier frequency; and wherein the backhaul radio is further configured to select at least one of the first transmit RF carrier frequency or the second transmit RF carrier frequency in response to at least a current link condition at an at least one of the one or more other backhaul radios. - View Dependent Claims (40, 41)
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Specification