Method to generate beamforming vector and provide the information for generating beamforming vector
AssigneesElectronics and Telecommunications Research Institute, Industry Academic Cooperation Foundation Kyunghee University
InventorsJi Hyung Kim, Wooram Shin, Dong Seung Kwon, Choongil Yeh, Een Kee Hong
Life of this patent
Estimating the term…
Abstract
A method to generate a beamforming vector by a terminal includes receiving information on a first precoding matrix and a second precoding matrix from a serving base station; and generating a beamforming vector by linearly combining the first precoding matrix and the second precoding matrix.
Claims14
A method to generate a beamforming vector by a terminal, the method comprising:
- receiving information identifying a first precoding matrix and information identifying a second precoding matrix from a serving base station;
- and generating a beamforming vector by linearly combining the first precoding matrix and the second precoding matrix, wherein the first precoding matrix is a precoding matrix that maximizes transmission power to the serving base station and the second precoding matrix is a precoding matrix that minimizes interference to a neighboring base station.
A method to provide information for generating a beamforming vector from a serving base station to a terminal, the method comprising:
- transmitting information identifying a first precoding matrix to the terminal;
- and transmitting information identifying a second precoding matrix to the terminal, wherein a beamforming vector is generated by linearly combining the first precoding matrix and the second precoding matrix, wherein the first precoding matrix is a precoding matrix that maximizes transmission power to the serving base station, and the second precoding matrix is a precoding matrix that minimizes interference power to a neighboring base station.
A method to generate a beamforming vector by a terminal, the method comprising:
- receiving an index of a first precoding matrix and an index of a second precoding matrix from a serving base station;
- and
- generating a beamforming vector by combining the first precoding matrix and the second precoding matrix,
- wherein the index of the first preceding matrix is “i” for maximizing ∥(Wi·Hs)∥2,
- the index of the second precoding matrix is “i” for minimizing ∥(Wi·Hl)∥2,
- the Hs is a channel between the terminal and the serving base station,
- the Hl is a channel between the terminal and the neighboring base station, and
- the Wi is ith precoding matrix in a codebook including a plurality of precoding matrices.
A method to provide information for generating a beamforming vector from a serving base station to a terminal, the method comprising:
- transmitting an index of a first precoding matrix to the terminal;
- and
- transmitting an index of a second precoding matrix to the terminal,
- wherein a beamforming vector is generated by combining the first precoding matrix and the second precoding matrix,
- the index of the first preceding matrix is “i” for maximizing ∥(Wi·Hs)∥2,
- the index of the second precoding matrix is “i” for minimizing ∥(Wi·Hl)∥2,
- the Hs is a channel between the terminal and the serving base station,
- the Hl is a channel between the terminal and the neighboring base station, and
- the Wi is ith precoding matrix in a codebook including a plurality of precoding matrices.
An apparatus for generating a beamforming vector by a terminal, the apparatus comprising:
- a beamforming vector generator which receives information identifying a first precoding matrix and information identifying a second precoding matrix from a serving base station, and generates a beamforming vector by linearly combining the first precoding matrix and the second precoding matrix;
- and a multiplier which multiplies the beamforming vector with an input signal to generate a transmission signal, wherein the first precoding matrix is a precoding matrix that maximizes transmission power to the serving base station and the second precoding matrix is a precoding matrix that minimizes interference to a neighboring base station.
An apparatus for generating a beamforming vector by a terminal, the apparatus comprising:
- a beamforming vector generator which receives an index of a first precoding matrix and an index of a second precoding matrix from a serving base station, and
- generates a beamforming vector by linearly combining the first precoding matrix and the second precoding matrix;
- and a multiplier which multiplies the beamforming vector with an input signal to generate a transmission signal,
- wherein the index of the first preceding matrix is “i” for maximizing ∥(Wi·Hs)∥2,
- the index of the second precoding matrix is “i” for minimizing ∥(Wi·Hl)∥2,
- the Hs is a channel between the terminal and the serving base station,
- the Hl is a channel between the terminal and the neighboring base station, and
- the Wi is ith precoding matrix in a codebook including a plurality of precoding matrices.
Dependencies are inferred from the claim text.