POINT-TO-MULTIPOINT DIGITAL RADIO FREQUENCY TRANSPORT
First Claim
1. A distributed antenna system comprising:
- a host unit configured to convert a first signal to a transmitted digital signal, the host unit further configured to convert a received digital signal to a second signal;
a plurality of remote antenna units communicatively coupled with the host unit, each remote unit configured to transmit an analog representation of the transmitted digital signal, each remote antenna unit further configured to receive radio frequency signals and convert the radio frequency signals into a digitized received spectrum; and
a summing unit communicatively coupled to the host unit and at least one remote antenna unit of the plurality of remote antenna units, the summing unit positioned downstream of and remote from the host unit and upstream of and remote from the at least one remote antenna unit, the summing unit including a digital summer configured to sum a first digitized spectrum derived from a signal received by the summing unit from the at least one remote antenna unit with a second digitized spectrum to generate a digitally summed signal, wherein the digitally summed signal is transmitted toward the host unit.
7 Assignments
0 Petitions
Accused Products
Abstract
One embodiment is directed to a system for use with a coverage area in which one or more wireless units wirelessly transmit using a wireless radio frequency spectrum. The system comprises a first unit, and a plurality of second units communicatively coupled to the first unit using at least one communication medium. Each of the plurality of second units generates respective digital RF samples indicative of a respective analog wireless signal received at that second unit. Each of the plurality of second units communicates the respective digital RF samples generated by that second unit to the first unit using the at least one communication medium. The first unit digitally sums corresponding digital RF samples received from the plurality of second units to produce summed digital RF samples. The system is configured so that an input used for base station processing is derived from the resulting summed digital RF samples.
10 Citations
34 Claims
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1. A distributed antenna system comprising:
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a host unit configured to convert a first signal to a transmitted digital signal, the host unit further configured to convert a received digital signal to a second signal; a plurality of remote antenna units communicatively coupled with the host unit, each remote unit configured to transmit an analog representation of the transmitted digital signal, each remote antenna unit further configured to receive radio frequency signals and convert the radio frequency signals into a digitized received spectrum; and a summing unit communicatively coupled to the host unit and at least one remote antenna unit of the plurality of remote antenna units, the summing unit positioned downstream of and remote from the host unit and upstream of and remote from the at least one remote antenna unit, the summing unit including a digital summer configured to sum a first digitized spectrum derived from a signal received by the summing unit from the at least one remote antenna unit with a second digitized spectrum to generate a digitally summed signal, wherein the digitally summed signal is transmitted toward the host unit. - View Dependent Claims (2, 3, 4)
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- 5. The distributed antenna system of claim, wherein the host unit, summing unit, and plurality of remote antenna units are communicatively coupled over at least one communication medium.
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7. A system for digital transport of a wireless spectrum, the system comprising:
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a first unit; a second unit remotely located from the first unit and communicatively coupled to the first unit using at least a first wired communication link; a third unit remotely located from the first unit and communicatively coupled to the second unit; wherein the third unit is configured to receive a first analog wireless signal comprising first wireless spectrum and any transmissions from any wireless units within a first coverage area associated with the third unit; wherein the third unit is configured to generate first digital samples indicative of at least a first portion of the first wireless spectrum of the first analog wireless signal; wherein the third unit is configured to communicate the first digital samples to the second unit; wherein the second unit is configured to digitally sum the first digital samples with second digital samples indicative of at least a second portion of a second wireless spectrum of a second analog wireless signal to produce first summed digital samples; wherein the second unit is configured to communicate the first summed digital samples to the first unit using the first wired communication link; and wherein the system is configured so that an input used for base station processing is derived from the first summed digital samples. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A first unit used in digital transport of a wireless spectrum, the first unit comprising:
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a first interface configured to communicatively couple the first unit to a second upstream unit located remotely from the first unit using a first wired communication link; a second interface configured to communicatively couple the first unit to a third downstream unit, the second interface configured to receive first digital samples from the third downstream unit, the first digital samples indicative of at least a first portion of a first wireless spectrum of a first analog wireless signal comprising the first wireless spectrum and any transmission from any wireless units with a first coverage area associated with the third downstream unit; a digital summer configured to digitally sum the first digital samples with second digital samples indicative of at least a second portion of a second wireless spectrum of a second analog wireless signal to produce first summed digital samples; wherein the first interface is configured to communicate the first summed digital samples to the second upstream unit using the first wired communication link, wherein the second upstream unit is configured so that an input used for base station processing is derived from the first summed digital samples. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification