Mobile communication system and method for providing common channel coverage using beamforming antennas
First Claim
Patent Images
1. A wireless transmit/receive unit (WTRU), comprising:
- a receiver and a processor configured to receive information from a base station indicating an assignment of periodic time intervals to transmit sounding signals;
a transmitter and the processor configured to transmit sounding signals to the base station in the assigned periodic time intervals in response to the received information, wherein the WTRU does not transmit any data at a same time that the WTRU transmits the sounding signals, wherein the transmitted sounding signals of the WTRU are distinguishable from sounding signals from other WTRUs; and
the receiver and the processor are further configured to receive downlink transmissions from the base station based on the transmitted sounding signals.
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Abstract
A wireless transmit/receive unit (WTRU) includes circuitry configured to receive information from a base station indicating an assignment of periodic time slots to transmit sounding signals and circuitry configured to transmit sounding signals to the base station in the assigned periodic time slots in response to the received information, wherein a timing of transmission of the sounding signals in response to the received information differs between a time division duplex mode and a frequency division duplex mode, and wherein the transmitted sounding signals are distinguishable from sounding signals from other WTRUs.
41 Citations
20 Claims
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1. A wireless transmit/receive unit (WTRU), comprising:
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a receiver and a processor configured to receive information from a base station indicating an assignment of periodic time intervals to transmit sounding signals; a transmitter and the processor configured to transmit sounding signals to the base station in the assigned periodic time intervals in response to the received information, wherein the WTRU does not transmit any data at a same time that the WTRU transmits the sounding signals, wherein the transmitted sounding signals of the WTRU are distinguishable from sounding signals from other WTRUs; and the receiver and the processor are further configured to receive downlink transmissions from the base station based on the transmitted sounding signals. - View Dependent Claims (2, 3, 4, 5)
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6. A method, comprising:
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receiving information from a base station by a wireless transmit/receive unit (WTRU), the information indicating an assignment of periodic time intervals to transmit sounding signals; transmitting sounding signals by the WTRU to the base station in the assigned periodic time intervals in response to the received information, wherein the WTRU does not transmit any data at a same time that the WTRU transmits the sounding signals, wherein the transmitted sounding signals are distinguishable from sounding signals from other WTRUs; and receiving a downlink transmission by the WTRU from the base station based on the transmitted sounding signals. - View Dependent Claims (7, 8, 9, 10)
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11. A base station comprising:
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a transmitter and a processor configured to transmit information to a wireless transmit/receive unit (WTRU) indicating an assignment of periodic time intervals to transmit sounding signals; a receiver and the processor are further configured to receive sounding signals from the WTRU in the assigned periodic time intervals in response to the transmitted information, wherein the base station does not receive any data from the WTRU at a same time that the base station receives the sounding signals from the WTRU, wherein the received sounding signals of the WTRU are distinguishable from sounding signals from other WTRUs; and the transmitter and the processor are further configured to transmit downlink transmissions to the WTRU based on the received sounding signals. - View Dependent Claims (12, 13, 14, 15)
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16. A method performed by a base station, comprising:
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transmitting information from the base station to a wireless transmit/receive unit (WTRU), the information indicating an assignment of periodic time slots intervals to transmit sounding signals; receiving sounding signals at the base station from the WTRU in the assigned periodic time intervals in response to the transmitted information, wherein the base station does not receive any data from the WTRU at a same time that the base station receives the sounding signals from the WTRU, wherein the received sounding signals of the WTRU are distinguishable from sounding signals from other WTRUs; and transmitting a downlink transmission from the base station to the WTRU based on the transmitted sounding signals. - View Dependent Claims (17, 18, 19, 20)
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Specification