Frequency-division duplexing in a time-division duplexing mode for a telecommunications system
First Claim
1. A distributed antenna system, comprising:
- a head-end unit including a time-division duplexing (“
TDD”
) mode scheduler configured to identify a start of a downlink radio block that includes frequency-division duplexing signals based on monitoring a downlink communications channel and generate an indication of a TDD transmission time-slot based on detection of the start of the downlink radio block; and
a remote unit configured to receive an uplink radio block on an uplink communications channel and transmit the downlink radio block on the downlink communications channel, the remote unit including a transmit/receive controller configured to receive the indication of the TDD transmission time-slot and in response to the indication, increase a downlink gain of the downlink radio block during the TDD transmission time-slot, and reduce an uplink gain of the uplink radio block during the TDD transmission time-slot.
8 Assignments
0 Petitions
Accused Products
Abstract
Certain features relate to operating a distributed antenna system or repeater system communicating frequency-division duplexing (“FDD”) signals in a time-division duplexing (“TDD”) mode. A TDD mode scheduler is configured for monitoring a downlink communications channel for the start of a downlink frame, sub-frame, or resource slot. Based on the start of a downlink frame, sub-frame, or resource slot, the TDD mode scheduler can identify a TDD transmission time-slot. The TDD mode scheduler can schedule high-powered downlink sub-frames during the TDD transmission time-slots where higher power output may be desirable. Based on the indication of the TDD transmission time-slot, a transmit/receive controller can increase the gain of the downlink communication and reduce the gain of the uplink communication.
13 Citations
20 Claims
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1. A distributed antenna system, comprising:
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a head-end unit including a time-division duplexing (“
TDD”
) mode scheduler configured to identify a start of a downlink radio block that includes frequency-division duplexing signals based on monitoring a downlink communications channel and generate an indication of a TDD transmission time-slot based on detection of the start of the downlink radio block; anda remote unit configured to receive an uplink radio block on an uplink communications channel and transmit the downlink radio block on the downlink communications channel, the remote unit including a transmit/receive controller configured to receive the indication of the TDD transmission time-slot and in response to the indication, increase a downlink gain of the downlink radio block during the TDD transmission time-slot, and reduce an uplink gain of the uplink radio block during the TDD transmission time-slot. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A unit of a repeater system, comprising:
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a transmitter configured to transmit a downlink radio block that includes downlink frequency-division duplexing signals on a downlink communications channel; a receiver configured to receive an uplink radio block that includes uplink frequency-division duplexing signals on an uplink communications channel; a time-division duplexing (“
TDD”
) mode scheduler configured to identify a start of the downlink radio block based on monitoring the downlink communications channel and generate an indication of a TDD transmission time-slot based on detection of the start of the downlink radio block; anda transmit/receive controller configured to receive the indication of the TDD transmission time-slot and in response to the indication, increase a downlink gain of the downlink radio block during the TDD transmission time-slot, and reduce an uplink gain of the uplink radio block during the TDD transmission time-slot. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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monitoring a downlink communications channel in which information formatted in radio blocks that include frequency-division duplexing signals is communicated; identifying, based on the downlink communications channel, a start of a downlink radio block; based on detection of the start of the downlink radio block, generating an indication of a time-division duplexing (“
TDD”
) transmission time-slot; andin response to the indication of a time-division duplexing (“
TDD”
) transmission time-slot;increasing a downlink gain of the downlink radio block during the TDD transmission time-slot; and reducing an uplink gain of an uplink radio block during the TDD transmission time-slot. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification