Systems and methods for noise floor optimization in distributed antenna system with direct digital interface to base station
First Claim
1. A signal interface unit for a distributed antenna system, comprising:
- a channelized radio carrier interface configured to receive a downlink channelized radio carrier for a radio frequency carrier from a channelized radio carrier base station interface;
an antenna side interface configured to communicate a downlink digitized radio frequency signal from the antenna side interface to the distributed antenna system communicatively coupled to the antenna side interface; and
a signal conversion module communicatively coupled between the channelized radio carrier interface and the antenna side interface and configured to convert between the downlink channelized radio carrier and the downlink digitized radio frequency signal at least in part by adjusting at least one downlink attribute of the downlink digitized radio frequency signal communicated to the distributed antenna system based on requirements of the channelized radio carrier base station interface to cause the distributed antenna system to appear as a remote radio head to the channelized radio carrier interface.
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Accused Products
Abstract
A signal interface unit for a distributed antenna system (DAS) includes a channelized radio carrier interface configured to receive a downlink channelized radio carrier for a radio frequency carrier from a channelized radio carrier base station interface; an antenna side interface configured to communicate a downlink digitized radio frequency signal from the antenna side interface to the DAS communicatively coupled to the antenna side interface; and a signal conversion module communicatively coupled between the channelized radio carrier interface and the antenna side interface and configured to convert between the downlink channelized radio carrier and the downlink digitized radio frequency signal at least in part by adjusting at least one downlink attribute of the downlink digitized radio frequency signal communicated to the DAS based on requirements of the channelized radio carrier base station interface to cause the DAS to appear as a remote radio head to the channelized radio carrier interface.
123 Citations
20 Claims
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1. A signal interface unit for a distributed antenna system, comprising:
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a channelized radio carrier interface configured to receive a downlink channelized radio carrier for a radio frequency carrier from a channelized radio carrier base station interface; an antenna side interface configured to communicate a downlink digitized radio frequency signal from the antenna side interface to the distributed antenna system communicatively coupled to the antenna side interface; and a signal conversion module communicatively coupled between the channelized radio carrier interface and the antenna side interface and configured to convert between the downlink channelized radio carrier and the downlink digitized radio frequency signal at least in part by adjusting at least one downlink attribute of the downlink digitized radio frequency signal communicated to the distributed antenna system based on requirements of the channelized radio carrier base station interface to cause the distributed antenna system to appear as a remote radio head to the channelized radio carrier interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A signal interface unit for an antenna system, comprising:
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an external device interface configured to receive a first downlink signal from an external device; an antenna side interface configured to communicate a second downlink signal to an antenna unit communicatively coupled to the antenna side interface from the antenna side interface; a signal conversion module communicatively coupled between the external device interface and the antenna side interface and configured to convert from the first downlink signal to the second downlink signal at least in part by digitally adjusting at least one downlink attribute of the second downlink signal communicated from the antenna side interface based on requirements of the external device to cause the antenna system to appear as a remote radio head to the external device. - View Dependent Claims (17, 18)
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19. A method for making a distributed antenna system appear as a radio head in a digital radio system, comprising:
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receiving a downlink channelized radio carrier for a radio frequency carrier from a channelized radio carrier base station interface at a signal interface unit; converting the downlink channelized radio carrier to a downlink digitized radio frequency signal at the signal interface unit at least in part by adjusting at least one downlink attribute of the downlink digitized radio frequency signal based on requirements of a channelized radio carrier base station interface communicatively coupled to the signal interface unit to cause the distributed antenna system to appear as a remote radio head to the channelized radio carrier base station interface; communicating the downlink digitized radio frequency signal for the radio frequency carrier from the signal interface unit to the distributed antenna system.
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20. A method of conforming downlink signals to requirements of an external device, comprising:
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receiving a first downlink signal from an external device interface of a signal interface unit; converting the first downlink signal to a second downlink signal at the signal interface unit at least in part by adjusting at least one downlink attribute of the second downlink signal based on requirements of an external device communicatively coupled to the signal interface unit to cause the signal interface unit and an antenna unit to appear as a remote radio head to the external device; and communicating the second downlink signal from the antenna unit at an antenna side interface of the signal interface unit to the external device.
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Specification