APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING PHASE COMPENSATION REFERENCE SIGNAL

• US 20180041259A1
• Filed: 08/04/2017
• Published: 02/08/2018
• Est. Priority Date: 08/05/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Jaewon, NOH, Jeehwan, RYU, Hyunseok, SON, Hyukmin, YU, Hyunkyu, YOO, Hyunil
• Granted Patent: US 10,419,087 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/0224 using sounding signals
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and system for converging a 5th-generation (5G) communication system for supporting higher data rates beyond a 4th-generation (4G) system with a technology for Internet of Things (IoT) are provided. The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The method for transmitting and receiving a phase compensation reference signal (PCRS) to compensate for phase noise. The method may determine whether a first precoding is applied to a demodulation reference signal (DMRS) and the PCRS to be transmitted to a terminal. The base station may also generate the DMRS and the PCRS, based on whether the first precoding is applied to the DMRS and the PCRS, and transmit data, the DMRS, and the PCRS to the terminal.

Claims

1. A method of a base station in a communication system, the method comprising:

determining whether a first precoding is applied to a demodulation reference signal (DMRS) and a phase compensation reference signal (PCRS) to be transmitted to a terminal;

generating the DMRS and the PCRS based on whether the first precoding is applied to the DMRS and the PCRS; and

transmitting data, the DMRS, and the PCRS to the terminal.

2. The method of claim 1, further comprising:

transmitting, to the terminal, downlink control information including antenna information indicating at least one antenna port associated with the DMRS and the PCRS and precoding information indicating whether the first precoding is applied.

3. The method of claim 2, wherein the precoding information indicates that the first precoding is applied to at least one antenna port associated with the DMRS and at least one antenna port associated with the PCRS.

4. The method of claim 1,

wherein the DMRS is used to estimate channel information, and

wherein the PCRS is used to estimate a phase noise to compensate the channel information.

5. A method of a terminal in a communication system, the method comprising:

receiving data, a demodulation reference signal (DMRS), and a phase compensation reference signal (PCRS) from a base station;

determining whether a first precoding is applied to the DMRS and the PCRS; and

estimating channel information using the DMRS and the PCRS based on whether the first precoding is applied to the DMRS and the PCRS.

6. The method of claim 5, further comprising:

receiving, from the base station, downlink control information including antenna information indicating at least one antenna port associated with the DMRS and the PCRS and precoding information indicating whether the first precoding is applied.

7. The method of claim 6, wherein the precoding information indicates that the first precoding is applied to at least one antenna port associated with the DMRS and at least one antenna port associated with the PCRS.

8. The method of claim 5, further comprising:

estimating channel information based on the DMRS;

estimating a phase noise based on the PCRS; and

compensating the channel information based on the phase noise.

9. A base station in a communication system, the base station comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to;

determine whether a first precoding is applied to a demodulation reference signal (DMRS) and a phase compensation reference signal (PCRS) to be transmitted to a terminal,

generate the DMRS and the PCRS based on whether the first precoding is applied to the DMRS and the PCRS, and

transmit data, the DMRS, and the PCRS to the terminal.

10. The base station of claim 9, wherein the controller is further configured to transmit, to the terminal, downlink control information including antenna information indicating at least one antenna port associated with the DMRS and the PCRS and precoding information indicating whether the first precoding is applied.

11. The base station of claim 10, wherein the precoding information indicates that the first precoding is applied to at least one antenna port associated with the DMRS and at least one antenna port associated with the PCRS.

12. The base station of claim 9, wherein the controller is further configured to:

estimate channel information based on the DMRS,

estimate a phase noise based on the PCRS, and

compensate the channel information based on the phase noise.

13. A terminal in a communication system, the terminal comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to;

receive data, a demodulation reference signal (DMRS), and a phase compensation reference signal (PCRS) from a base station,

determine whether a first precoding is applied to the DMRS and the PCRS, and

estimate channel information by using the DMRS and the PCRS based on whether is the first precoding is applied to the DMRS and the PCRS.

14. The terminal of claim 13, wherein the controller is further configured to receive, from the base station, downlink control information including antenna information indicating at least one antenna port associated with the DMRS and the PCRS and precoding information indicating whether the first precoding is applied.

15. The terminal of claim 14, wherein the precoding information indicates that the first precoding is applied to at least one antenna port associated with the DMRS and at least one antenna port associated with the PCRS.

16. The terminal of claim 13, wherein the controller is further configured to:

estimate channel information based on the DMRS,

estimate a phase noise based on the PCRS, and

compensate the channel information based on the phase noise.

17. The terminal of claim 13, wherein the controller is further configured to determine whether the first precoding is applied to the DMRS and a second precoding is applied to the PCRS.