METHOD FOR TRANSMITTING AND RECEIVING A COMP REFERENCE SIGNAL IN A MULTI-CELL ENVIRONMENT
First Claim
1. A method for receiving a CoMP RS (Cooperative Multi-Point Reference Signal) from each of CoMP cells at a user equipment (UE) in a multi-cell environment, the method comprising:
- receiving from the CoMP cells CoMP RSs to which orthogonal codes are applied on a slot unit or on a symbol unit, for mutual orthogonality among the CoMP RSs; and
processing the received CoMP RSs using the orthogonal codes applied on a slot unit or on a symbol unit by distinguishing the CoMP cells from one another.
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Abstract
Disclosed is a channel estimation method using a cooperative multi-point (CoMP) reference signal in a multi-cell environment. The method comprises a CoMP reference signal receiving step of enabling a terminal to receive, from each of the cells that perform a CoMP operation, a CoMP reference signal where an orthogonal code is applied to each of the cells; a channel estimation step of enabling the terminal to estimate, using said CoMP reference signal, channels of each of the cells which perform said CoMP operation; and a channel status feedback information transmitting step of enabling the terminal to transmit channel status feedback information to each of the cells.
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Citations
8 Claims
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1. A method for receiving a CoMP RS (Cooperative Multi-Point Reference Signal) from each of CoMP cells at a user equipment (UE) in a multi-cell environment, the method comprising:
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receiving from the CoMP cells CoMP RSs to which orthogonal codes are applied on a slot unit or on a symbol unit, for mutual orthogonality among the CoMP RSs; and processing the received CoMP RSs using the orthogonal codes applied on a slot unit or on a symbol unit by distinguishing the CoMP cells from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for transmitting a CoMP RS (Cooperative Multi-Point Reference Signal) at a CoMP base station in a multi-cell environment, the method comprising:
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allocating orthogonal code resources to which an orthogonal code is applied on a slot unit or on a symbol unit, for mutual orthogonality among CoMP RSs of each of CoMP base stations; and transmitting a CoMP RS using the orthogonal code resources to which the orthogonal code is applied on a slot unit or on a symbol basis, for mutual orthogonality among the CoMP RSs of the CoMP base stations.
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Specification