Guard band indication method and apparatus

Patent metadata

Field	Value
Publication number	US-12028197-B2
Application number	US-202117334418-A
Country	US
Kind code	B2
Filing date	May 28, 2021
Priority date	Nov 30, 2018
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A guard band indication method on an unlicensed spectrum is described that includes: a network device generating one or any combination of the following four types of information on the unlicensed spectrum: an indication of bandwidth configuration information, an indication of available bandwidth information, an indication of unavailable bandwidth information, or an indication of guard band information; and the network device sends the one or any combination of the foregoing four types of generated information. The one or any combination of the four types of information is used to determine a guard band that is based on a listen before talk (LBT) result.

First claim

What is claimed is:

1. A method, carried out by a network device, the method comprising:
sending a guard band information, wherein the guard band information is carried by a radio resource control (RRC) signaling and the guard band information comprises:
an information of a start resource block (RB) position, and
a number of RBs corresponding to one or more guard bands in a bandwidth part (BWP); and

sending an available bandwidth information that indicates one or more available RB sets in the BWP, wherein the one or more available RB sets are used to perform data transmission, and wherein each guard band of the one or more guard bands indicated by the guard band information is not in the one or more available RB sets.

2. A method, carried out by a terminal, the method comprising:
receiving a guard band information that is carried by a radio resource control (RRC) signaling, wherein the guard band information comprises an information of:
a start resource block (RB) position, and
a number of RBs corresponding to one or more guard bands in a bandwidth part (BWP); and

receiving an available bandwidth information that indicates one or more available RB sets in the BWP, wherein the one or more available RB sets are used to perform data transmission, and wherein each of the one or more guard bands indicated by the guard band information is not in the one or more available RB sets.

3. A communication apparatus for an unlicensed spectrum, comprising:
at least on one processor, and
a non-transitory computer-readable medium comprising computer-executable instructions that, when executed by the at least one processor, cause the communication apparatus to carry out a method comprising:
sending a guard band information, wherein the guard band information is carried by a radio resource control (RRC) signaling and the guard band information comprises an information of a start resource block (RB) position and a number of RBs corresponding to one or more guard bands in a bandwidth part (BWP); and
sending an available bandwidth information that indicates one or more available RB sets in the BWP, the one or more available RB sets are used to perform data transmission, and wherein each guard band of the one or more guard bands indicated by the guard band information is not in the one or more available RB sets.

4. A communication apparatus comprising:
at least one processor, and
a non-transitory computer-readable medium comprising computer-executable instructions that, when executed by the at least one processor, cause the communication apparatus to carry out a method comprising:
receiving a guard band information that is carried by a radio resource control (RRC) signaling, wherein the guard band information comprises an information of:
a start resource block (RB) position, and
a number of RBs corresponding to one or more guard bands in a bandwidth part (BWP); and

receiving an available bandwidth information that indicates one or more available RB sets in the BWP, wherein the one or more available RB sets are used to perform data transmission, and wherein each of the one or more guard bands indicated by the guard band information is not in the one or more available RB sets.

5. The method according to claim 1 , the method further comprising:
sending a configured bandwidth information for a terminal,
wherein the available bandwidth information is determined based on the configured bandwidth information after listen before talk (LBT).

6. The method according to claim 2 , the method further comprising:
receiving a configured bandwidth information for the terminal,
wherein the available bandwidth information is determined based on the configured bandwidth information after listen before talk (LBT).

7. The communication apparatus according to claim 3 , the communication apparatus to carry out a method is further comprising:
sending a configured bandwidth information for a terminal,
wherein the available bandwidth information is determined based on the configured bandwidth information after listen before talk (LBT).

8. The communication apparatus according to claim 4 , the communication apparatus to carry out a method is further comprising:
receiving a configured bandwidth information for the terminal,
wherein the available bandwidth information is determined based on the configured bandwidth information after listen before talk (LBT).

9. The method according to claim 5 , wherein the configured bandwidth information comprises location information and/or subcarrier spacing of the configured bandwidth, and
wherein the location information comprises one or more pieces of information corresponding to the configured bandwidth taken from the group consisting of: the subcarrier spacing, a start RB, an end RB, and a quantity of RBs.

10. The method according to claim 6 , wherein the configured bandwidth information comprises location information and/or subcarrier spacing of the configured bandwidth, and
wherein the location information comprises one or more pieces of information corresponding to the configured bandwidth taken from the group consisting of: the subcarrier spacing, a start RB, an end RB, and a quantity of RBs.

11. The communication apparatus according to claim 7 , wherein the configured bandwidth information comprises location information and/or subcarrier spacing of the configured bandwidth, and
wherein the location information comprises one or more pieces of information corresponding to the configured bandwidth taken from the group consisting of: the subcarrier spacing, a start RB, an end RB, and a quantity of RBs.

12. The communication apparatus according to claim 8 , wherein the configured bandwidth information comprises location information and/or subcarrier spacing of the configured bandwidth, and
wherein the location information comprises one or more pieces of information corresponding to the configured bandwidth taken from the group consisting of: the subcarrier spacing, a start RB, an end RB, and a quantity of RBs.

13. The method according to claim 2 , the method further comprising:
determining a resource for receiving data based on the guard band information, the available bandwidth information and the configured bandwidth information.

14. The communication apparatus according to claim 4 , wherein the method further comprises:
determining a resource for receiving data based on the guard band information, the available bandwidth information and the configured bandwidth information.

Assignees

• Huawei Tech Co Ltd

Inventors

• Jia Qiong
• Zhang Jiayin
• Wu Ji

Classifications

• H04L27/2605

  Symbol extensions, e.g. Zero Tail, Unique Word [UW] · CPC title

• H04W72/232

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/0453 Primary

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title