Beamforming method and apparatus therefor
First Claim
1. A method of a base station, the method comprising:
- transmitting channel measurement configuration information to a terminal;
receiving channel information from the terminal;
generating a first symbol and a second symbol for the terminal;
transmitting, to the terminal, a first signal through a first antenna, the first signal comprising the first symbol and the second symbol, wherein a first mapping parameter is applied to the second symbol; and
transmitting, to the terminal, a second signal through a second antenna, the second signal comprising the first symbol and the second symbol, wherein a second mapping parameter different from the first mapping parameter is applied to the second symbol,wherein the first symbol and the second symbol are transmitted through the first antenna and the second antenna based on one of following Equation 1, Equation 2 or Equation 3;
wherein the Equation 1 recites
1 Assignment
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Accused Products
Abstract
The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate than a 4G communication system such as LTE. An embodiment of the present specification relates to an apparatus and a method for MIMO transmission and reception in a closed-loop beamforming system. A communication method of a base station, according to one embodiment of the present invention, may comprise the steps of: transmitting information for channel measurement to a terminal; receiving channel-related information from the terminal; transmitting a first symbol via at least two antennas; and transmitting a second symbol via the at least two antennas by applying different channel mapping rules to the second symbol in the at least two antennas. One embodiment of the present invention can improve overall performance without downward leveling by a symbol transmitted via an antenna having low average channel power.
8 Citations
14 Claims
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1. A method of a base station, the method comprising:
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transmitting channel measurement configuration information to a terminal; receiving channel information from the terminal; generating a first symbol and a second symbol for the terminal; transmitting, to the terminal, a first signal through a first antenna, the first signal comprising the first symbol and the second symbol, wherein a first mapping parameter is applied to the second symbol; and transmitting, to the terminal, a second signal through a second antenna, the second signal comprising the first symbol and the second symbol, wherein a second mapping parameter different from the first mapping parameter is applied to the second symbol, wherein the first symbol and the second symbol are transmitted through the first antenna and the second antenna based on one of following Equation 1, Equation 2 or Equation 3; wherein the Equation 1 recites - View Dependent Claims (2, 3, 13)
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4. A method of a terminal, the method comprising:
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receiving channel measurement configuration information from a base station; measuring channels; transmitting channel information to the base station; receiving, from the base station, a first signal through a first antenna, the first signal comprising a first symbol and a second symbol, wherein a first mapping parameter is applied to the second symbol; and receiving, from the base station, a second signal through a second antenna, the second signal comprising the first symbol and the second symbol, wherein a second mapping parameter different from the first mapping parameter is applied to the second symbol, wherein the first symbol and the second symbol are transmitted through the first antenna and the second antenna based on one of following Equation 1, Equation 2 or Equation 3; wherein the Equation 1 recites - View Dependent Claims (5, 6, 14)
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7. A base station comprising:
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a transceiver configured to transmit and receive signals; and at least one processor configured to; transmit channel measurement configuration information to a terminal, receive channel information from the terminal, generate a first symbol and a second symbol for the terminal, transmit, to the terminal, a first signal through a first antenna, the first signal comprising the first symbol and the second symbol, wherein a first mapping parameter is applied to the second symbol, and transmit, to the terminal, a second signal through a second antenna, the second signal comprising the first symbol and the second symbol, wherein a second mapping parameter different from the first mapping parameter is applied to the second symbol, wherein the first symbol and the second symbol are transmitted through the first antenna and the second antenna based on one of following Equation 1, Equation 2 or Equation 3; wherein the Equation 1 recites - View Dependent Claims (8, 9)
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10. A terminal comprising:
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a transceiver configured to transmit and receive signals; and at least one processor configured to; receive channel measurement configuration information from a base station, measure channels, transmit channel information to the base station, receive, from the base station, a first signal through a first antenna, the first signal comprising a first symbol and a second symbol, wherein a first mapping parameter is applied to the second symbol, and receive, from the base station, a second signal through a second antenna, the second signal comprising the first symbol and the second symbol, wherein a second mapping parameter different from the first mapping parameter is applied to the second symbol, wherein the first symbol and the second symbol are transmitted through the first antenna and the second antenna based on one of following Equation 1, Equation 2 or Equation 3; wherein the Equation 1 recites - View Dependent Claims (11, 12)
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Specification