Augmenting Passive Optical Networks
First Claim
1. ) A passive optical network converter of optical signals and radio signals adapted to down convert a received high frequency radio signal to a lower frequency signal and adapted to adjust optical transmit power levels of a burst-mode optical transmitter and adapted to transmit a burst-mode optical signal responsive to the lower frequency signal and adapted to up convert a received optical signal to a higher frequency signal and adapted to transmit a continuous-mode radio signal responsive to the higher frequency signal.
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Abstract
Passive optical networks have optical budget loss limitations that affect the ability of a Service Provider to serve a limited number of clients over a limited range. The deployment of passive optical networks is constrained by potential physical rights of way issues. A method and system for augmenting communication links of a passive optical network are disclosed which utilize radio frequency communication enabling an increase in the number of clients on the network as well as increasing the reach or range of the network while potentially eliminating physical rights of way issues.
50 Citations
20 Claims
- 1. ) A passive optical network converter of optical signals and radio signals adapted to down convert a received high frequency radio signal to a lower frequency signal and adapted to adjust optical transmit power levels of a burst-mode optical transmitter and adapted to transmit a burst-mode optical signal responsive to the lower frequency signal and adapted to up convert a received optical signal to a higher frequency signal and adapted to transmit a continuous-mode radio signal responsive to the higher frequency signal.
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8. ) A converter of optical signals and radio signals in a passive optical network, the passive optical network having an optical line terminal, the converter comprising:
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an optical port; a passive optical network protocol processor having a transmission convergence layer and adapted to be assigned a network address by the optical line terminal, the passive optical protocol processor adapted to receive, process and respond to network communications responsive to network communications initiated from the optical line terminal and addressed to the passive optical network protocol processor; radio circuitry adapted to modulate a low frequency signal to a higher frequency signal and adapted to demodulate a high frequency signal to a lower frequency signal; and an antenna port, whereby the converter is adapted to transmit a radio signal responsive to a received optical signal and is adapted to transmit an optical signal responsive to a received radio signal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. ) A passive optical network having an optical line terminal, a plurality of optical network units, a plurality of passive optical splitters and at least one communication link between the optical line terminal and an optical network unit, the passive optical network communication link comprising:
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an optical line terminal coupled to a first optical fiber and adapted to transmit a first optical signal and receive a second optical signal; a first converter coupled to the first optical fiber and coupled to a first antenna, the first converter adapted to transmit a first radio signal through the first antenna responsive to the first optical signal received through the first optical fiber and adapted to transmit the second optical signal through the first optical fiber responsive to a second radio signal received over the first antenna; a second converter coupled to a second optical fiber and coupled to a second antenna, the second converter adapted to transmit a third optical signal through the second optical fiber responsive to the first radio signal received over the second antenna and adapted to transmit a second radio signal through the second antenna responsive to a forth optical signal received through the second optical fiber; a passive optical splitter coupled to the second optical fiber and coupled to a third optical fiber; and an optical network unit coupled to the third optical fiber and adapted to receive the third optical signal and adapted to transmit the forth optical signal; whereby the communications between the optical line terminal and the optical network unit of a passive optical network includes radio signal communications across a radio link. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification