Beam configuration method and device

Patent metadata

Field	Value
Publication number	US-10193606-B2
Application number	US-201715605139-A
Country	US
Kind code	B2
Filing date	May 25, 2017
Priority date	Nov 26, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A beam configuration method and a device are provided and can resolve problems that a signal gain is a relatively low and utilization of an antenna array unit is low in a process of implementing omnidirectional coverage of a millimeter wave. A specific solution is as follows: determining whether an included angle between a ray that is perpendicular to a first plane and that extends outward from an electronic device and a ray pointing from the electronic device to a peer device is less than or equal to a preset angle, and when the included angle between the ray that is perpendicular to the first plane and that extends outward from the electronic device and the ray pointing from the electronic device to the peer device is less than or equal to the preset angle, performing end-fire state configuration on antenna array units in the first plane.

First claim

What is claimed is:

1. A beam configuration method applied to an electronic device, wherein the electronic device comprises a first plane, the first plane comprises at least two antenna array units, and the method comprises:
determining whether an included angle between a ray that is perpendicular to the first plane and that extends outward from the electronic device and a ray pointing from the electronic device to a peer device is less than or equal to a preset angle; and
when the included angle between the ray that is perpendicular to the first plane and that extends outward from the electronic device and the ray pointing from the electronic device to the peer device is less than or equal to the preset angle, adjusting a phase difference between the antenna array units in the first plane, so that the array factors satisfy a condition of an end-fire state;
when the at least two antenna array units in the first plane are in uniform straight-line distribution, array factors of the antenna array units in the first plane are

f
⁡

(
φ
)

=



sin
⁢

N
⁢

⁢
φ

2

sin
⁢

φ
2



,

wherein φ=ε+kd cos δ, φ is a wave path difference between different antenna array units, ε is a phase difference between the two antenna array units,

k
=

2
⁢
π

λ

,

k is a quantity of waves, λ is a wavelength, d is a distance between the two antenna array units, and δ is an included angle between the ray that is perpendicular to the first plane and that extends outward from the electronic device and a ray in the direction of the first beam.

2. The method according to claim 1 , wherein the method further comprises:
when the included angle between the ray that is perpendicular to the first plane and that extends outward from the electronic device and the ray pointing from the electronic device to the peer device is greater than the preset angle, performing broadside state configuration on the antenna array units in the first plane, so that the first beam is in a same direction as a perpendicular line of the normal line of the first plane.

3. The method according to claim 2 , wherein
the performing broadside state configuration on the antenna array units in the first plane comprises:
adjusting a phase difference between the antenna array units in the first plane, so that the array factors satisfy a condition of a broadside state.

4. The method according to claim 1 , wherein the electronic device further comprises N other planes, at least two antenna array units are configured for each of the N other planes, N is an integer greater than zero, and when the included angle between the ray that is perpendicular to the first plane and that extends outward from the electronic device and the ray pointing from the electronic device to the peer device is less than or equal to the preset angle, the method further comprises:
when an n th other plane of the N other planes is perpendicular to the first plane, performing broadside state configuration on antenna array units in the n th other plane, so that an n th other beam is in a same direction as a perpendicular line of a normal line of the n th other plane; or
when an n th other plane of the N other planes is parallel to the first plane, configuring antenna array units in the n th other plane to be in a non-operating state.

5. The method according to claim 4 , wherein after all antenna array units of the N other planes are configured, the method further comprises:
adjusting a direction of a combined beam, so that the combined beam is in a same direction as the ray pointing from the electronic device to the peer device, wherein the combined beam is a beam obtained by combining the first beam and N other beams.

6. An electronic device, comprising:
a processor;
a bus; and
a memory, wherein the processor and the memory are connected to each other by using the bus;
the processor is configured to determine whether an included angle between a ray that is perpendicular to a first plane and that extends outward from the electronic device and a ray pointing from the electronic device to a peer device is less than or equal to a preset angle; and
the processor is further configured to: when the included angle between the ray that is perpendicular to the first plane and that extends outward from the electronic device and the ray pointing from the electronic device to the peer device is less than or equal to the preset angle, adjust a phase difference between the antenna array units in the first plane, so that the array factors satisfy a condition of an end-fire state; when the at least two antenna array units in the first plane are in uniform straight-line distribution, array factors of the antenna array units in the first plane are

f
⁡

(
φ
)

=



sin
⁢

N
⁢

⁢
φ

2

sin
⁢

φ
2



,

wherein φ=ε+kd cos δ, φ is a wave path difference between different antenna array units, ε is a phase difference between the two antenna array units,

k
=

2
⁢
π

λ

,

k is a quantity of waves, λ is a wavelength, d is a distance between the two antenna array units, and δ is

Assignees

• Huawei Tech Co Ltd

Inventors

• Du Mingde
• Wang Guangjian
• Yuan Jiebo

Classifications

• H01Q21/22

  Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array · CPC title

• H04W16/28

  using beam steering · CPC title

• H04B7/086

  using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming · CPC title

• H04B7/0408

  using two or more beams, i.e. beam diversity · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title