Method and apparatus for virtualizing antenna in wireless communication system

Patent metadata

Field	Value
Publication number	US-9843938-B2
Application number	US-201314424402-A
Country	US
Kind code	B2
Filing date	Sep 2, 2013
Priority date	Aug 31, 2012
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for virtualizing an antenna. A method for reconfiguring an antenna of a terminal in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: the terminal transmitting an antenna reconfiguration request to a base station; the terminal receiving from the base station information indicating authorization of the antenna reconfiguration request; the terminal transmitting antenna reconfiguration information to the base station when the information indicating authorization indicates the authorization of the antenna reconfiguration request; and the terminal receiving from the base station information confirming the completion of reconfiguration.

First claim

The invention claimed is:

1. A method for reconfiguring antennas of a terminal in a wireless communication system, comprising:
transmitting, by the terminal, an antenna reconfiguration request to a base station;
receiving, by the terminal from the base station, an authorization message indicating whether the antenna reconfiguration request is authorized; and
transmitting, by the terminal, antenna reconfiguration information to the base station when the antenna reconfiguration request is authorized,
wherein the antenna reconfiguration information includes information on an antenna virtualization pattern including a number of one or more physical antennas mapped to one virtual antenna, and
wherein the number of one or more physical antennas mapped to one virtual antenna is determined to change a beamwidth based on moving speed of the terminal and moving direction of the terminal.

2. The method according to claim 1 , wherein the information on the antenna virtualization pattern further includes at least one of a total number of transmission virtual antennas, a total number of reception virtual antennas, or information specifying the one or more physical antennas.

3. The method according to claim 1 , wherein the number of one or more physical antennas mapped to the one virtual antenna is proportional to the moving speed of the terminal.

4. The method according to claim 1 , wherein the number of one or more physical antennas mapped to one virtual antenna is determined further based on a movement state including at least one of whether the terminal is moving, an acceleration state, or a deceleration state.

5. The method according to claim 1 , wherein the number of one or more physical antennas mapped to one virtual antenna is determined further based on a communication state including includes at least one of a distance between the terminal and the base station, relative locations of the terminal and the base station, or a channel state between the terminal and the base station.

6. The method according to claim 1 , wherein the transmitting the antenna reconfiguration request is performed when the terminal does not perform data transmission and reception.

7. The method according to claim 1 , wherein the number of one or more physical antennas mapped to one virtual antenna is determined further based on an arranging direction of the one or more physical antennas with respect to the moving direction of the terminal.

8. A method for supporting antenna reconfiguration of a terminal by a base station in a wireless communication system, comprising:
receiving, by the base station, an antenna reconfiguration request from the terminal;
transmitting, by the base station to the terminal, an authorization message indicating whether the antenna reconfiguration request is authorized; and
receiving, by the base station, antenna reconfiguration information from the terminal,
wherein the antenna reconfiguration information includes information on an antenna virtualization pattern including a number of one or more physical antennas mapped to one virtual antenna, and
wherein the number of one or more physical antennas mapped to one virtual antenna is determined to change a beamwidth based on moving speed of the terminal and moving direction of the terminal.

9. A terminal performing antenna reconfiguration in a wireless communication system, comprising:
a transmitter;
a receiver; and
a processor,
wherein the processor is configured to:
control the transmitter to transmit an antenna reconfiguration request to a base station;
control the receiver to receive, from the base station, an authorization message indicating whether the antenna reconfiguration request is authorized; and
control the transmitter to transmit antenna reconfiguration information to the base station when the antenna reconfiguration request is authorized,
wherein the antenna reconfiguration information includes information on an antenna virtualization pattern including a number of one or more physical antennas mapped to one virtual antenna, and
wherein the number of one or more physical antennas mapped to one virtual antenna is determined to change a beamwidth based on moving speed of the terminal and moving direction of the terminal.

10. A base station supporting antenna reconfiguration of a terminal in a wireless communication system, comprising:
a transmitter;
a receiver; and
a processor,
wherein the processor is configured to:
control the receiver to receive;
control the transmitter to transmit, to the terminal, an authorization message indicating whether the antenna reconfiguration request is authorized; and
control the receiver to receive antenna reconfiguration information from the terminal,
wherein the antenna reconfiguration information includes information on an antenna virtualization pattern including a number of one or more physical antennas mapped to one virtual antenna, and
wherein the number of one or more physical antennas mapped to one virtual antenna is determined to change a beamwidth based on moving speed of the terminal and moving direction of the terminal.

Assignees

• Lg Electronics Inc

Inventors

• Kang Jiwon
• Kim Dongcheol
• Cho Hangyu
• Park Sungho
• Lim Dongguk

Classifications

• H04B7/0469

  taking special antenna structures, e.g. cross polarized antennas into account · CPC title

• H04B7/0871

  using different reception schemes, at least one of them being a diversity reception scheme · CPC title

• H04B7/0456

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04W24/02

  Arrangements for optimising operational condition · CPC title

• H04L5/0023

  Time-frequency-space · CPC title