TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
2 Assignments
0 Petitions
Accused Products
Abstract
There are provided a terminal, a base station, a communication system, and a communication method allowing a base station to efficiently notify a terminal of control information in a communication system in which the base station and the terminal communicate with each other. A terminal configured to communicate with a base station including a plurality of transmit antenna ports is configured to estimate, based on a channel state information reference signal transmitted from the plurality of transmit antenna ports, a channel state between the base station and the terminal; and to generate power difference information representing a difference between powers for groups of transmit antenna ports that are some of the plurality of transmit antenna ports.
26 Citations
27 Claims
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1-15. -15. (canceled)
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16. A terminal apparatus configured to communicate with a base station apparatus including a plurality of transmit antenna ports, comprising:
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a channel estimation unit configured to estimate a channel state based on a channel state information reference signal associated with the plurality of transmit antenna ports; and a feedback information generation unit configured to generate, based on the channel state, channel state information corresponding to a difference between powers for groups of transmit antenna ports that are some of the plurality of transmit antenna ports. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A base station apparatus including a plurality of transmit antenna ports and configured to communicate with a terminal apparatus, comprising:
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transmission unit configured to transmit a channel state information reference signal associated with the plurality of transmit antenna ports; and a feedback information processing unit configured to process channel state information from the terminal apparatus, wherein the channel state information is generated, based on a channel state that is estimated using the channel state information reference signal, the channel state information corresponding to a difference between powers for groups of transmit antenna ports that are some of the plurality of transmit antenna ports. - View Dependent Claims (26)
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27. A communication method for a terminal apparatus configured to communicate with a base station apparatus including a plurality of transmit antenna ports, comprising:
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a step of estimating a channel state based on a channel state information reference signal associated with the plurality of transmit antenna ports; and a step of generating, based on the channel state, channel state information corresponding to a difference between powers for groups of transmit antenna ports that are some of the plurality of transmit antenna ports.
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Specification