System and method for beam switching and reporting

Patent metadata

Field	Value
Publication number	US-2017346544-A1
Application number	US-201715488402-A
Country	US
Kind code	A1
Filing date	Apr 14, 2017
Priority date	May 26, 2016
Publication date	Nov 30, 2017
Grant date	—

Abstract

Methods, apparatuses, and computer-readable mediums associated with a user equipment (UE) and a base station are provided for herein. In aspects, a UE may receive, from a base station, a beam modification command indicating at least one beam index for communicating through at least one beam on at least one channel. In an aspect, each beam index of the at least one beam index may indicate at least a direction for communicating through a corresponding beam of the at least one beam. The UE may communicate, with the base station, through the at least one beam corresponding to the at least one beam index on the at least one channel.

First claim

What is claimed is:

1 . A method of wireless communication by a user equipment (UE), the method comprising:
receiving, from a base station, a beam modification command indicating at least one beam index for communicating through at least one beam on at least one channel, each beam index of the at least one beam index indicating at least a direction for communicating through a corresponding beam of the at least one beam; and communicating, with the base station, through the at least one beam corresponding to the at least one beam index on the at least one channel.

2 . The method of claim 1 , further comprising:
communicating, with the base station, through a serving beam corresponding to a serving beam index; and switching, after receiving the beam modification command, from the serving beam to the at least one beam corresponding to the at least one beam index indicated by the beam modification command.

3 . The method of claim 2 , wherein the switching from the serving beam to the at least one beam is performed at a predetermined time.

4 . The method of claim 3 , wherein the predetermined time is associated with at least one of a symbol or subframe, and wherein the beam modification command indicates the at least one of the symbol or the subframe.

5 . The method of claim 1 , wherein the beam modification command indicates, for each beam index of the at least one beam index, a corresponding channel of the at least one channel.

6 . The method of claim 1 , wherein the at least one beam index comprises a plurality of beam indexes, and the at least one channel comprises a plurality of channels.

7 . The method of claim 1 , wherein the at least one beam index is applicable to one of uplink communication or downlink communication.

8 . The method of claim 1 , wherein the beam modification command is received in a medium access control (MAC) control element (CE).

9 . The method of claim 1 , wherein the beam modification command is received in a downlink control information (DCI) message.

10 . The method of claim 8 , further comprising:
determining the at least one channel based on a DCI format of the DCI message.

11 . The method of claim 1 , wherein the beam modification command is received via radio resource control (RRC) signaling.

12 . An apparatus for wireless communication, the apparatus comprising:
means for receiving, from a base station, a beam modification command indicating at least one beam index for communicating through at least one beam on at least one channel, each beam index of the at least one beam index indicating at least a direction for communicating through a corresponding beam of the at least one beam; and means for communicating, with the base station, through the at least one beam corresponding to the at least one beam index on the at least one channel.

13 . The apparatus of claim 12 , further comprising:
means for communicating, with the base station, through a serving beam corresponding to a serving beam index; and means for switching, after receiving the beam modification command, from the serving beam to the at least one beam corresponding to the at least one beam index indicated by the beam modification command.

14 . The apparatus of claim 13 , wherein the means for switching from the serving beam to the at least one beam is configured to switch from the serving beam to the at least one beam at a predetermined time.

15 . The apparatus of claim 14 , wherein the predetermined time is associated with at least one of a symbol or subframe, and wherein the beam modification command indicates the at least one of the symbol or the subframe.

16 . The apparatus of claim 12 , wherein the beam modification command indicates, for each beam index of the at least one beam index, a corresponding channel of the at least one channel.

17 . The apparatus of claim 12 , wherein the at least one beam index comprises a plurality of beam indexes, and the at least one channel comprises a plurality of channels.

18 . The apparatus of claim 12 , wherein the at least one beam index is applicable to one of uplink communication or downlink communication.

19 . The apparatus of claim 12 , wherein the beam modification command is received in a medium access control (MAC) control element (CE).

20 . The apparatus of claim 12 , wherein the beam modification command is received in a downlink control information (DCI) message.

21 . The apparatus of claim 20 , further comprising:
means for determining the at least one channel based on a DCI format of the DCI message.

22 . The apparatus of claim 12 , wherein the beam modification command is received via radio resource control (RRC) signaling.

23 . An apparatus for wireless communication, the apparatus comprising:
a memory; and at least one processor coupled to the memory and configured to:
receive, from a base station, a beam modification command indicating at least one beam index for communicating through at least one beam on at least one channel, each beam index of the at least one beam index indicating at least a direction for communicating through a corresponding beam of the at least one beam; and
communicate, with the base station, through the at least one beam corresponding to the at least one beam index on the at least one channel.

24 . The apparatus of claim 23 , wherein the at least one processor is further configured to:
communicate, with the base station, through a serving beam corresponding to a serving beam index; and switch, after receiving the beam modification command, from the serving beam to the at least one beam corresponding to the at least one beam index indicated by the beam modification command.

25 . The apparatus of claim 24 , wherein the switching from the serving beam to the at least one beam is performed at a predetermined time that is associated with at least one of a symbol or subframe, and wherein the beam modification command indicates the at least one of the symbol or the subframe.

26 . The apparatus of claim 23 , wherein the beam modification command indicates, for each beam index of the at least one beam index, a corresponding channel of the at least one channel.

27 . The apparatus of claim 23 , wherein the at least one beam index comprises a plurality of beam indexes, and the at least one channel comprises a plurality of channels.

28 . The apparatus of claim 23 , wherein the beam modification command is received in a medium access control (MAC) control element (CE), in a downlink control information (DCI) message, or via radio resource control (RRC) signaling.

29 . The apparatus of claim 28 , wherein the at least one processor is further configured to determine the at least one channel based on a DCI format of the DCI message.

30 . A computer-readable medium storing computer-executable code for wireless communication by a user equipment (UE), comprising code to:
receive, from a base station, a beam modification command indicating at least one beam index for communicating through at least one beam on at least one channel, each beam index of the at least one beam index indicating at least a direction for communicating through a corresponding beam of the at least one beam; and communicate, with the base station, through the at least one beam corresponding to the at least one beam

Assignees

• Qualcomm Inc

Inventors

• Islam Muhammad Nazmul
• Sadiq Bilal
• Luo Tao
• Subramanian Sundar
• Li Junyi

Classifications

• H04B7/088 Primary

  using beam selection · CPC title

• H04W40/248

  Connectivity information update · CPC title

• H04W74/0858

  collision detection · CPC title

• H04B7/061

  using feedback from receiving side · CPC title

• H04B7/0634

  Antenna weights or vector/matrix coefficients · CPC title