Optical network for bi-directional wireless communication
First Claim
1. An optical network for bi-directional wireless communication, comprising:
- a remote antenna unit arranged to convert a downlink optical signal into a downlink radio signal, transmit the downlink radio signal wirelessly, and convert an uplink radio signal received wirelessly into an uplink optical signal;
one optical line that can be used as a transmission medium for both the downlink optical signal and the uplink optical signal; and
a central base station including a circulator linked to the remote antenna unit through the optical line, wherein the central base station outputs the downlink optical signal to the remote antenna unit through the circulator and detects the uplink optical signal input through the circulator.
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Accused Products
Abstract
An optical network for bi-directional wireless communication is disclosed. The optical network includes a remote antenna unit for converting a downlink optical signal into a downlink radio signal, transmitting the downlink radio signal wirelessly, and converting an uplink radio signal received wirelessly into an uplink optical signal. An optical line is used as a transmission medium of the downlink optical signal and the uplink optical signal. The optical network also includes a central base station including a circulator linked to the remote antenna unit through the optical line, so that the central base station outputs the downlink optical signal to the remote antenna unit through the circulator and detects the uplink optical signal inputted through the circulator.
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Citations
12 Claims
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1. An optical network for bi-directional wireless communication, comprising:
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a remote antenna unit arranged to convert a downlink optical signal into a downlink radio signal, transmit the downlink radio signal wirelessly, and convert an uplink radio signal received wirelessly into an uplink optical signal;
one optical line that can be used as a transmission medium for both the downlink optical signal and the uplink optical signal; and
a central base station including a circulator linked to the remote antenna unit through the optical line, wherein the central base station outputs the downlink optical signal to the remote antenna unit through the circulator and detects the uplink optical signal input through the circulator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for an optical, bi-directional wireless communication network comprising:
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a remote antenna unit arranged to convert a downlink optical signal into a downlink radio signal, transmit the downlink radio signal, and convert an uplink radio signal received into an uplink optical signal;
at least one optical line that can be used as a transmission medium for both the downlink optical signal and the uplink optical signal; and
an interface to a central base station. - View Dependent Claims (9, 10, 11)
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12. an electro-absorption modulator comprising:
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a converter arranged to convert a downlink optical signal into a downlink radio signal, an uplink radio signal into an uplink optical signal, and outputs the converted uplink optical signal; and
an interface to a central base station, the interface including a first surface that is opposed to a second surface and a reflection layer that is coated on the second surface.
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Specification