Apparatus and method for supporting a plurality of MIMO modes in a wireless communication system
First Claim
1. A method for supporting a plurality of multiple input multiple output (MIMO) modes in a receiver in a wireless communication system, comprising:
- selecting one of the plurality of MIMO modes according to a speed of the receiver, comprising;
selecting an open-loop (OL) MIMO mode from among the plurality of MIMO modes, if the speed of the receiver is larger than a predetermined threshold; and
selecting a closed-loop (CL) MIMO mode from among the plurality of MIMO modes, if the speed of the receiver is less than or equal to the predetermined threshold; and
generating feedback information in a transmission format corresponding to the selected MIMO mode and transmitting the feedback information to a transmitter using a feedback resources allocated according to the selected MIMO mode.
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Abstract
An apparatus and method for supporting a plurality of MIMO modes in a wireless communication system are provided, in which a receiver selects one of the plurality of MIMO modes according to at least one of a received signal strength, a speed of the receiver, a correlation between a transmitter and the receiver, a presence or absence of channel quality information, a precoding index, and an antenna information, a rank, and a number of users, generates feedback information in a transmission format corresponding to the selected MIMO mode, and transmits the feedback information to the transmitter using a feedback resources allocated according to the selected MIMO mode.
71 Citations
16 Claims
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1. A method for supporting a plurality of multiple input multiple output (MIMO) modes in a receiver in a wireless communication system, comprising:
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selecting one of the plurality of MIMO modes according to a speed of the receiver, comprising; selecting an open-loop (OL) MIMO mode from among the plurality of MIMO modes, if the speed of the receiver is larger than a predetermined threshold; and selecting a closed-loop (CL) MIMO mode from among the plurality of MIMO modes, if the speed of the receiver is less than or equal to the predetermined threshold; and generating feedback information in a transmission format corresponding to the selected MIMO mode and transmitting the feedback information to a transmitter using a feedback resources allocated according to the selected MIMO mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for supporting a plurality of multiple input multiple output (MIMO) modes in a wireless communication system, comprising:
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a MIMO mode decider configured to select one of the plurality of MIMO modes according to a speed of the receiver; and a feedback generator configured to generate feedback information in a transmission format corresponding to the selected MIMO mode and transmit the feedback information to a transmitter using a feedback resource allocated according to the selected MIMO mode, wherein the MIMO mode decider selects an open-loop (OL) MIMO mode from among the plurality of MIMO modes if the speed of the receiver is larger than a predetermined threshold, and selects a closed-loop (CL) MIMO mode from among the plurality of MIMO modes if the speed of the receiver is less than or equal to the predetermined threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification