Communication method, related device, and computer storage medium

Patent metadata

Field	Value
Publication number	US-11445484-B2
Application number	US-201916541653-A
Country	US
Kind code	B2
Filing date	Aug 15, 2019
Priority date	Jun 16, 2017
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

A method, device, and storage medium are disclosed that determine beam information of an antenna port for a frequency domain resource not used for transmitting uplink data and/or uplink control information. In one embodiment, a first device determines, based on first configuration information, that a beam for sending a first uplink reference signal on a first antenna port is also a beam for sending a second uplink reference signal on a second antenna port, and sends the first uplink reference signal on the first antenna port. Beam information of the first antenna port can be determined based on beam information of the second antenna port, and the first uplink reference signal can be sent based on the determined beam information of the first antenna port. This can spare beam configuration performed by a network side for the first frequency domain resource, and reduce overheads for transmitting configuration information.

First claim

What is claimed is:

1. A communication method, comprising:
receiving, by a first device, first configuration information on a second frequency domain resource, wherein the first configuration information indicates a first resource for the first device to send a first uplink reference signal on a first frequency domain resource and indicates a second resource for the first device to send a second uplink reference signal on the second frequency domain resource, wherein the first frequency domain resource is not used for transmitting uplink data and/or uplink control information, wherein the first uplink reference signal is used for uplink channel sounding, and wherein the second uplink reference signal is used for uplink channel sounding;
determining, by the first device based on the first configuration information, whether a beam for sending the first uplink reference signal on a first antenna port is also a beam for sending the second uplink reference signal on a second antenna port;
in response to determining that the beam for sending the first uplink reference signal on the first antenna port is also the beam for sending the second uplink reference signal on the second antenna port, determining, by the first device, beam information of the first antenna port for the first uplink reference signal based on beam information of the second antenna port for the second uplink reference signal, wherein the beam information of the second antenna port for the second uplink reference signal is index information that corresponds to a resource identity configured for the first device; and
sending, by the first device, the first uplink reference signal on the first antenna port based on the beam information of the first antenna port.

2. The method according to claim 1 , wherein the first configuration information is carried in one piece of downlink control information (DCI), and the determining, by the first device based on the first configuration information, whether the beam for sending the first uplink reference signal on the first antenna port is also the beam for sending the second uplink reference signal on the second antenna port comprises:
determining, by the first device, whether the one piece of DCI instructs the first device to send the first uplink reference signal on the first frequency domain resource and instructs the first device to send the second uplink reference signal on the second frequency domain resource, so as to determine whether the beam for sending the first uplink reference signal on the first antenna port is also the beam for sending the second uplink reference signal on the second antenna port.

3. The method according to claim 1 , wherein the determining, by the first device based on the first configuration information, whether the beam for sending the first uplink reference signal on the first antenna port is also the beam for sending the second uplink reference signal on the second antenna port comprises:
determining, by the first device, whether the first resource for the first device to send the first uplink reference signal on the first frequency domain resource and the second resource for the first device to send the second uplink reference signal on the second frequency domain resource belong to one uplink reference signal resource set or belong to one uplink reference signal resource configuration, so as to determine whether the beam for sending the first uplink reference signal on the first antenna port is also the beam for sending the second uplink reference signal on the second antenna port.

4. The method according to claim 1 , wherein the determining, by the first device based on the first configuration information, whether the beam for sending the first uplink reference signal on the first antenna port is also the beam for sending the second uplink reference signal on the second antenna port is based on at least one of the following conditions:
the first frequency domain resource and the second frequency domain resource having a same subcarrier spacing;
the first frequency domain resource and the second frequency domain resource having a same cyclic prefix;
the first frequency domain resource and the second frequency domain resource having a same timing advance;
a frequency domain gap between the first frequency domain resource and the second frequency domain resource being less than a threshold;
the first frequency domain resource and the second frequency domain resource being within one frequency domain range; or
the first frequency domain resource and the second frequency domain resource being configured to belong to one uplink reference signal resource set or one uplink reference signal resource configuration.

5. The method according to claim 1 , wherein the first uplink reference signal is in a correspondence with the second uplink reference signal.

6. The method according to claim 1 , wherein the first frequency domain resource is a first component carrier, and the second frequency domain resource is a second component carrier.

7. The method according to claim 1 , wherein the first frequency domain resource is a first bandwidth part, and the second frequency domain resource is a second bandwidth part.

8. A communication method, comprising:
sending, by a second device, first configuration information on a second frequency domain resource to a first device, wherein the first configuration information indicates a first resource for the first device to send a first uplink reference signal on a first frequency domain resource and indicates a second resource for the first device to send a second uplink reference signal on the second frequency domain resource, wherein the first frequency domain resource is not used for transmitting uplink data and/or uplink control information, wherein the first uplink reference signal is used for uplink channel sounding, wherein the second uplink reference signal is used for uplink channel sounding, wherein a beam for the first device to send the first uplink reference signal on a first antenna port is also a beam for the first device to send the second uplink reference signal on a second antenna port, wherein beam information of the first antenna port for the first uplink reference signal is based on beam information of the second antenna port for the second uplink reference signal, and wherein the beam information of the second antenna port for the second uplink reference signal is index information that corresponds to a resource identity configured for the first device; and
receiving, by the second device, the first uplink reference signal from the first device on the first antenna port based on the beam information of the first antenna port.

9. The method according to claim 8 , wherein that the beam for the first device to send the first uplink reference signal on the first antenna port is also the beam for the first device to send the second uplink reference signal on the second antenna port is based on at least one of the following conditions:
the first configuration information being carried in one piece of downlink control information (DCI);
the first configuration information being carried in one media access control (MAC) control element (CE) message; or
the first resource for sending the first uplink reference signal on the first frequency domain resource and the second resource for sending the second uplink reference signal on the second frequency domain resource belonging to one uplink reference signal resource set or belonging to one uplink reference signal resource configuration.

10. The method according to claim 8 , wherein that the beam for the first device to send the first uplink reference signal on the first antenna port is als

Assignees

• Huawei Tech Co Ltd

Inventors

• Qin Yi
• Li Zhongfeng
• Tang Hao
• Wang Fan

Classifications

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/23

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

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title