Selectively combining uplink signals in distributed antenna systems
First Claim
1. A unit of a distributed antenna system, the unit comprising:
- circuitry configured to;
receive first baseband uplink signals from remote units of the distributed antenna system via a first channel;
receive second baseband uplink signals from the remote units of the distributed antenna system via a second channel;
generate a first combined uplink signal by combining at least a first portion of the first baseband uplink signals received from a first subset of the remote units via the first channel that includes data for transmission to a base station; and
generate a second combined uplink signal by combining at least a second portion of the second baseband uplink signals received from a second subset of the remote units via the second channel that includes data for transmission to the base station, wherein the second combined uplink signal is generated in part by at least one of attenuating or excluding at least a third portion of the first baseband uplink signals received from the first subset of the remote units that does not include data for transmission to the base station; and
transmit the first combined uplink signal and the second combined uplink signal to the base station.
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Accused Products
Abstract
Certain aspects involve selectively combining uplink transmissions in a distributed antenna system (“DAS”). For example, a unit of the DAS can receive baseband uplink transmissions from remote units of the DAS via a first channel and a second channel. The unit can generate a first combined uplink signal by combining baseband uplink transmissions received from a first subset of the remote units via the first channel that include data for transmission to a base station. The unit can generate a second combined uplink signal that includes baseband uplink transmissions received from a second subset of the remote units via the second channel and excludes or attenuates baseband uplink transmissions that are received from the first subset of the remote units via the second channel and that lack data for transmission to the base station are excluded or attenuated. The unit can transmit the combined uplink signals to the base station.
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Citations
13 Claims
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1. A unit of a distributed antenna system, the unit comprising:
circuitry configured to; receive first baseband uplink signals from remote units of the distributed antenna system via a first channel; receive second baseband uplink signals from the remote units of the distributed antenna system via a second channel; generate a first combined uplink signal by combining at least a first portion of the first baseband uplink signals received from a first subset of the remote units via the first channel that includes data for transmission to a base station; and generate a second combined uplink signal by combining at least a second portion of the second baseband uplink signals received from a second subset of the remote units via the second channel that includes data for transmission to the base station, wherein the second combined uplink signal is generated in part by at least one of attenuating or excluding at least a third portion of the first baseband uplink signals received from the first subset of the remote units that does not include data for transmission to the base station; and transmit the first combined uplink signal and the second combined uplink signal to the base station. - View Dependent Claims (2, 3, 4, 5)
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6. A distributed antenna system (DAS) comprising:
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a first unit including circuitry; a plurality of remote units including circuitry and communicatively coupled to the first unit, wherein the plurality of remote units includes a first subset of remote units and a second subset of remote units, wherein each of the plurality of remote units are configured to; receive uplink radio frequency signals including a first radio frequency channel corresponding to a first channel and a second radio frequency channel corresponding to a second channel; extract first baseband uplink signals for the first channel from first uplink radio frequency signals in the first radio frequency channel; extract second baseband uplink signals for the second channel from second uplink radio frequency signals in the second radio frequency channel; and transmit the first baseband uplink signals and the second baseband uplink signals to the first unit within the distributed antenna system; and wherein the first unit is configured to; generate a first combined uplink signal by combining at least a first portion of the first baseband uplink signals received from the first subset of remote units that includes data for transmission to a base station; generate a second combined uplink signal by combining at least a second portion of the second baseband uplink signals received from the second subset of remote units that includes data for transmission to the base station, wherein the second combined uplink signal is generated in part by at least one of attenuating and excluding a third portion of the first baseband uplink signals received from the first subset of remote units that lacks data for transmission to the base station; and transmit the first combined uplink signal and the second combined uplink signal to the base station. - View Dependent Claims (7, 8, 9)
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10. A method comprising:
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receiving first baseband uplink signals at a first unit from remote units of a distributed antenna system via a first channel; receiving second baseband uplink signals at the first unit from the remote units of the distributed antenna system via a second channel; generating a first combined uplink signal by combining at least a first portion of the first baseband uplink signals received from a first subset of the remote units via the first channel that includes data for transmission to a base station; and generating a second combined uplink signal by combining at least a second portion of the second baseband uplink signals received from a second subset of the remote units via the second channel that includes data for transmission to the base station, wherein the second combined uplink signal is generated in part by at least one of attenuating or excluding at least a third portion of the first baseband uplink signals received from the first subset of the remote units that does not include data for transmission to the base station; and transmitting the first combined uplink signal and the second combined uplink signal to the base station. - View Dependent Claims (11, 12, 13)
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Specification