US 10,256,880 B2Granted

Codebook configuration method in multi-antenna wireless communication system and device for same

AssigneeLG Electronics Inc.

InventorsHaewook Park, Kijun Kim, Jonghyun Park

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Abstract

A method for configuring a codebook in a multi-antenna wireless communication system and a device for supporting the same are disclosed. Particularly, a method for configuring a codebook performed by a user equipment (UE) in a wireless communication system may include receiving a parameter for configuring a codebook C from a base station (BS) and configuring the codebook C using the parameter for configuring a codebook C, and the codebook C may be configured by Kronecker product of a vertical codebook WV for a vertical antenna element and a horizontal codebook WH for a horizontal antenna element, the parameter for configuring a codebook C may include one or more of an upper limit value and a lower limit value in one-dimension of a beam, and an angle in the one dimension of a beam generated from the codebook C may be determined within the upper limit value and the lower limit value.

Claims11

Dependent claims

A method for configuring a codebook performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving a parameter for configuring a codebook C from a base station (BS);
and
configuring the codebook C using the parameter,
wherein the codebook C is configured by Kronecker product of a vertical codebook WV for vertical antenna elements and a horizontal codebook WH for horizontal antenna elements,
wherein the parameter includes an upper limit value and a lower limit value of an angle in one-dimension of a beam generated based on the codebook C,
wherein the vertical codebook WV is configured by Equation below:
[
Equation
]
W
V
=
[
⁢
1
1
…
1
exp
(
j
·
2
⁢
π
·
d
v
λ
·
cos
⁢
(
θ
etilt
,
1
)
)
exp
(
j
·
2
⁢
π
·
d
v
λ
·
cos
⁢
(
θ
etilt
,
2
)
)
…
|
exp
(
j
·
2
⁢
π
·
d
v
λ
·
cos
⁢
(
θ
etilt
,
Q
V
)
)
⋮
⋮
⋱
⋮
exp
(
j
·
2
⁢
π
·
(
N
v
-
1
)
⁢
d
v
λ
·
cos
⁢
(
θ
etilt
,
1
)
)
exp
(
j
·
2
⁢
π
·
(
N
v
-
1
)
⁢
d
v
λ
·
cos
⁢
(
θ
etilt
,
2
)
)
…
exp
(
j
·
2
⁢
π
·
(
N
v
-
1
)
⁢
d
v
λ
·
cos
⁢
(
θ
etilt
,
Q
V
)
)
⁢
]
wherein, NV is a number of the vertical antenna elements, dV is an interval between the vertical antenna elements, QV is determined to be a product of NV and an oversampling factor, and θetilt is a vertical tilting angle of the beam.

174 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/741,143Filed 1 Jul 2016 · us provisional application
Priority: 1 Jul 2015
Published: US 2018/0198501 A112 Jul 2018
Granted: 9 Apr 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04B 7/0487
Taking channel rank into account: codebooks having a nested structure
H04B 7/0417
MIMO systems: feedback systems
H04B 7/0469
Taking physical layer constraints into account: taking special antenna structures, e.g. cross polarized antennas into account
H04B 7/0479
Special codebook structures directed to feedback optimisation: for multi-dimensional arrays, e.g. horizontal or vertical pre-distortion matrix…