COOLING SYSTEM CONTROL IN DISTRIBUTED ANTENNA SYSTEMS
First Claim
Patent Images
1. A distributed communication system, comprising:
- head-end equipment configured to receive downlink electrical radio frequency (RF) communications services signals and to convert the downlink electrical RF communications services signals into downlink optical RF communications services signals to be communicated over at least one optical RF communications services downlink;
a plurality of remote antenna units; and
a plurality of power distribution modules, the modules comprising;
at least one fan;
at least one output power port configured to distribute output power to at least one of the remote antenna units; and
a monitoring circuit, whereinthe monitoring circuit is configured to monitor a power usage of the at least one fan and to provide an alarm signal to at least one of the remote antenna units when the power usage of the at least one fan is outside of predetermined operating parameters.
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Accused Products
Abstract
Power distribution modules in distributed antenna systems include fan monitoring circuits for indicating an alarm condition to head-end equipment. The alarm condition can be used by system operator/owners that a fan is drawing excessive power, thereby detracting from system performance, or indicating that the fan may fail. The alarm condition signal can be returned to the head-end equipment via an uplink communication path between a remote unit powered by the module and the head-end equipment.
65 Citations
33 Claims
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1. A distributed communication system, comprising:
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head-end equipment configured to receive downlink electrical radio frequency (RF) communications services signals and to convert the downlink electrical RF communications services signals into downlink optical RF communications services signals to be communicated over at least one optical RF communications services downlink; a plurality of remote antenna units; and a plurality of power distribution modules, the modules comprising;
at least one fan;
at least one output power port configured to distribute output power to at least one of the remote antenna units; and
a monitoring circuit, whereinthe monitoring circuit is configured to monitor a power usage of the at least one fan and to provide an alarm signal to at least one of the remote antenna units when the power usage of the at least one fan is outside of predetermined operating parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A distributed communication system, comprising:
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head-end equipment configured to receive downlink radio frequency (RF) communications services signals and to transmit downlink RF communications services over at least one RF communications services downlink; a plurality of remote antenna units configured to receive downlink RF communications services signals from the head-end equipment and to transmit uplink RF communications services signals to the head-end equipment; and at least one power distribution module configured to distribute power to at least one of the remote antenna units, the power distribution module comprising at least one fan and being configured to monitor a power usage of the at least one fan and to provide an alarm signal to at least one of the remote antenna units when the power usage of the at least one fan is outside of predetermined operating parameters, wherein at least one of the remote antenna units is configured to transmit a fan alarm condition signal to the head-end equipment in response to receiving an alarm signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of monitoring a distributed communication system comprising head-end equipment configured to receive downlink radio frequency (RF) communications services signals and to transmit downlink RF communications services over at least one RF communications services downlink, a plurality of remote antenna units configured to receive downlink RF communications services signals from the head-end equipment and to transmit uplink RF communications services signals to the head-end equipment, and at least one power distribution module configured to distribute power to at least one of the remote antenna units, the method comprising:
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monitoring a power usage of the at least one fan; providing an alarm signal to at least one of the remote antenna units when the power usage of the at least one fan is outside of predetermined operating parameters; and transmitting a fan alarm condition signal from the remote antenna unit receiving the alarm signal to the head-end equipment. - View Dependent Claims (29, 30, 31, 32, 33)
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Specification