Systems and methods for broadband transmission of signals
First Claim
1. A system comprising:
- an extended frequency optical transition node having an optical interface adapted to couple to a fiber-optic cable transmission network link and a radio frequency (RF) interface adapted to couple to a subscriber site RF link, said extended frequency optical transition node having a tuner circuit operable to provide frequency translation of selected signals carried by said fiber-optic cable transmission network link modulated at frequencies outside of a tuning capability of subscriber equipment to frequencies within said tuning capability of said subscriber equipment,wherein said subscriber equipment comprises equipment configured to operate with respect to a switched digital video (SDV) passive optical network (PON) having a transmission bandwidth of 1 GHz, and wherein said frequency translation of selected signals by said extended frequency optical transition node is transparent to said subscriber equipment.
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0 Petitions
Accused Products
Abstract
Systems and methods which facilitate broadband transmission of signals using a delivery point tuning technique to provide a extended frequency passive optical network (EF-PON) are shown. Embodiments provide an extended frequency optical transition node (EF-OTN) at each of a plurality of delivery points to provide a frequency translation interface between equipment disposed at the delivery point locations and a network utilizing transmission bandwidth which is incompatible with that equipment. The foregoing frequency conversion is preferably transparent to the equipment receiving the network transmissions. Embodiments utilize a single wideband tuner for providing frequency conversion with respect to a plurality of equipment disposed a delivery point. Network head-end modulators are controlled to implement channel grouping such that the signals requested by each piece of subscriber equipment at a delivery point are placed within radio frequency (RF) channels so that each such signal is within the frequency converted band of an EF-OTN tuner.
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Citations
40 Claims
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1. A system comprising:
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an extended frequency optical transition node having an optical interface adapted to couple to a fiber-optic cable transmission network link and a radio frequency (RF) interface adapted to couple to a subscriber site RF link, said extended frequency optical transition node having a tuner circuit operable to provide frequency translation of selected signals carried by said fiber-optic cable transmission network link modulated at frequencies outside of a tuning capability of subscriber equipment to frequencies within said tuning capability of said subscriber equipment, wherein said subscriber equipment comprises equipment configured to operate with respect to a switched digital video (SDV) passive optical network (PON) having a transmission bandwidth of 1 GHz, and wherein said frequency translation of selected signals by said extended frequency optical transition node is transparent to said subscriber equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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an extended frequency optical transition node having an optical interface adapted to couple to a fiber-optic cable transmission network link and a radio frequency (RF) interface adapted to couple to a subscriber site RF link, said extended frequency optical transition node having a tuner circuit operable to provide frequency translation of signals carried by said fiber-optic cable transmission network link to selected frequencies output on said subscriber site RF link; and a head-end controller operable to provide channel paring of said signals such that a plurality of signals utilized by subscriber equipment associated with said extended frequency optical transition node are all modulated within a frequency band no broader than a passband of said tuner circuit. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method comprising:
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receiving information regarding a plurality of signals selected by subscriber equipment disposed at a subscriber site; and controlling modulation of signals at a cable head-end to provide channel groupings such that said plurality of signals selected by subscriber equipment are modulated in RF channels falling within a selected bandwidth, said selected bandwidth being only a portion of available network transmission bandwidth. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. A method comprising:
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converting an optical signal received at a subscriber site to a plurality of RF channels; translating frequencies of said RF channels to a selected band of RF channels within a tuning range of a subscriber equipment disposed at said subscriber site, said selected band of RF channels being different than a band said RF channels were modulated in; and outputting said selected band of RF channels on a subscriber site RF link coupled to said subscriber equipment; receiving information regarding a plurality of signals selected by said subscriber equipment disposed at said subscriber site; controlling modulation of signals at a cable head-end to provide channel groupings such that said plurality of signals selected by subscriber equipment are modulated in said RF channels falling within a selected bandwidth, said selected bandwidth being only a portion of available network transmission bandwidth; converting said RF channels to an optical signal; and transmitting said optical signal to said subscriber site via a fiber-optic network link. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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Specification