Communication method and communication system for reducing overhead of reference signal

Patent metadata

Field	Value
Publication number	US-12537645-B2
Application number	US-202018024717-A
Country	US
Kind code	B2
Filing date	Sep 3, 2020
Priority date	Sep 3, 2020
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

According to the present disclosure, disclosed is a communication method for reducing an overhead of a reference signal. The communication method according to the present disclosure comprises the steps in which: a reception unit receives a reference signal from a transmission unit; the reception unit obtains channel state information on the basis of the reference signal; the reception unit obtains loss information on the basis of the channel state information; the reception unit selects a mask to be applied to the reference signal on the basis of the quality of the loss information; and the reception unit transmits the selected mask to the transmission unit. The terminal of the present disclosure can be linked to an artificial intelligence module, a drone (unmanned aerial vehicle (UAV)), a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device related to 6G services, and the like.

First claim

The invention claimed is:

1 . A method comprising:
receiving, by a receiver, a first reference signal from a transmitter; obtaining, by the receiver, channel state information based on the first reference signal; obtaining, by the receiver, loss information based on the channel state information; selecting, by the receiver, a mask to be applied to the first reference signal based on a quality of the loss information; transmitting, by the receiver, the selected mask to the transmitter, and receiving a second reference signal from the transmitter, wherein the second reference signal is a signal that at least one channel component is omitted from the first reference signal by the transmitter based on the mask.

2 . The method of claim 1 ,
wherein “0” or a data signal is transmitted by the transmitter on the at least one channel component omitted from the first reference signal.

3 . The method of claim 2 , further comprising:
restoring, by the receiver, the at least one channel component using the mask.

4 . The method of claim 1 ,
wherein the obtaining, by the receiver, loss information comprises: obtaining loss information for each of candidate masks by applying each of the candidate masks to channel estimation information; and selecting, among the candidate masks, a mask having a highest quality of the loss information as the mask.

5 . The method of claim 4 ,
wherein obtaining a quality of the loss information comprises: restoring the loss information using each of the candidate masks; obtaining a difference value between the restored loss information and original data; and selecting, among the candidate masks, a mask deriving the difference value as minimum as the mask.

6 . A receiver comprising:
one or more transceivers; one or more processors; and one or more memories including one or more instructions performed by the one or more processors, wherein the one or more instructions comprise: receiving a first reference signal from a transmitter; obtaining channel state information based on the first reference signal; obtaining loss information based on the channel state information; selecting a mask to be applied to the first reference signal based on a quality of the loss information; transmitting the selected mask to the transmitter; and receiving a second reference signal from the transmitter, wherein the second reference signal is a signal that at least one channel component is omitted from the first reference signal by the transmitter based on the mask.

7 . The receiver of claim 6 ,
wherein “0” or a data signal is transmitted by the transmitter on the at least one channel component omitted from the first reference signal.

8 . The receiver of claim 7 ,
wherein the receiver restores the at least one channel component using the mask.

9 . The receiver of claim 6 ,
wherein the receiver obtains loss information for each of candidate masks by applying each of the candidate masks to channel estimation information, and selects, among the candidate masks, a mask having a highest quality of the loss information as the mask.

10 . The receiver of claim 9 ,
wherein the receiver restores the loss information using each of the candidate masks, obtains a difference value between the restored loss information and original data, and selects, among the candidate masks, a mask deriving the difference value as minimum as the mask.

Assignees

• Lg Electronics Inc

Inventors

• Kim Yeongjun
• Lee Sangrim
• Lee Hojae
• Jeon Kijun

Classifications

• H04L5/006 Primary

  Quality of the received signal, e.g. BER, SNR, water filling · CPC title

• H04L5/0051 Primary

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

• H04L5/00

  Arrangements affording multiple use of the transmission path · CPC title

• H04L25/02

  Details {; arrangements for supplying electrical power along data transmission lines (systems for transmitting signals via power distribution lines H04B3/54)} · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title