IP Library › Granted Patent US 11,196,521

Granted Patent B2

US 11,196,521 · App. 16/117,697 · Granted Dec 7, 2021

Method and device for supporting repetitive CSI-RS resource transmission in mobile communication system

Inventors: Youngwoo Kwak (Gyeonggi-do, KR); Hoondong Noh (Gyeonggi-do, KR); Cheolkyu Shin (Gyeonggi-do, KR)

H04L5/0048 H04B7/0626 H04L5/005 H04W72/04

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Quick Facts

Patent No.: US 11,196,521
App. No.: 16/117,697
Granted: Dec 7, 2021
Kind: B2

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USPTO Patent Center↗ Full Patent PDF↗

Abstract

The disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The t disclosure may be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security- and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. A method in a wireless communication system is provided. The method includes transmitting channel state information reference signal (CSI-RS) configuration information to a terminal, the CSI-RS configuration information used for a CSI-RS resource set which includes a plurality of CSI-RS resources and information on CSI-RS repetition, transmitting a plurality of CSI-RSs based on the CSI-RS configuration information to the terminal, and receiving feedback information from the terminal, wherein the information on CSI-RS repetition indicates whether the plurality of CSI-RSs are transmitted based on a same transmission beam repetitively.

Claims (46)

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

transmitting, to a terminal, configuration information on a channel state information reference signal (CSI-RS) resource set, the configuration information including configurations on a plurality of CSI-RS resources included in the CSI-RS resource set and information on a CSI-RS repetition, wherein the information on the CSI-RS repetition is set as either on or off, and wherein the plurality of CSI-RS resources included in the CSI-RS resource set are associated with a same beam in case that the information on the CSI-RS repetition is set as on;

in case that the information on the CSI-RS repetition is set as on, transmitting, to the terminal, a plurality of CSI-RSs corresponding to the plurality of CSI-RS resources based on the same beam; and

receiving, from the terminal, feedback information,

wherein the feedback information includes an indicator of a selected CSI-RS resource and a power related to the selected CSI-RS resource in case that the information on the CSI-RS repetition is set as off.

2. The method of claim 1 , wherein in case that the information on the CSI-RS repetition is set as on, the feedback information includes a power related to a CSI-RS resource.

3. The method of claim 1 , wherein in case that the information on the CSI-RS repetition is set as on, a periodicity is the same for all of the plurality of CSI-RS resources.

4. The method of claim 1 , wherein in case that the information on the CSI-RS repetition is set as on, a number of antenna ports is set to 1 or 2 for all of the plurality of CSI-RS resources.

5. The method of claim 1 , further comprising:

transmitting, to the terminal, the plurality of CSI-RSs corresponding to the plurality of CSI-RS resources based on different beams, in case that the information on the CSI-RS repetition is set as off.

6. A method performed by a terminal in a communication system, the method comprising:

receiving, from a base station, configuration information on a channel state information reference signal (CSI-RS) resource set, the configuration information including configurations on a plurality of CSI-RS resources included in the CSI-RS resource set and information on a CSI-RS repetition, wherein the information on the CSI-RS repetition is set as either on or off, and wherein the plurality of CSI-RS resources included in the CSI-RS resource set are associated with a same beam in case that the information on the CSI-RS repetition is set as on;

receiving, from the base station, a plurality of CSI-RSs corresponding to the plurality of CSI-RS resources based on the configuration information, wherein the plurality of CSI-RSs are transmitted based on the same beam in case that the information on the CSI-RS repetition is set as on;

obtaining feedback information based on the received plurality of CSI-RSs; and

transmitting, to the base station, the feedback information,

7. The method of claim 6 , wherein,

in case that the information on the CSI-RS repetition is set as on, the feedback information includes a power related to a CSI-RS resource.

8. The method of claim 6 , wherein in case that the information on the CSI-RS repetition is set as on, a periodicity is the same for all of the plurality of CSI-RS resources.

9. The method of claim 6 , wherein in case that the information on the CSI-RS repetition is set as on, a number of antenna ports is set to 1 or 2 for all of the plurality of CSI-RS resources.

10. The method of claim 6 , wherein the terminal does not assume that the plurality of CSI-RSs are transmitted on the same beam in case that the information on the CSI-RS repetition is set as off.

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

a transceiver; and

a controller operably coupled to the transceiver and configured to:

transmit, to a terminal, configuration information on a channel state information reference signal (CSI-RS) resource set, the configuration information including configurations on a plurality of CSI-RS resources included in the CSI-RS resource set and information on a CSI-RS repetition, wherein the information on the CSI-RS repetition is set as either on or off, and wherein the plurality of CSI-RS resources included in the CSI-RS resource set are associated with a same beam in case that the information on the CSI-RS repetition is set as on,

in case that the information on the CSI-RS repetition is set as on, transmit, to the terminal, a plurality of CSI-RSs corresponding to the plurality of CSI-RS resources based on the same beam, and

receive, from the terminal, feedback information,

12. The base station of claim 11 , wherein in case that the information on the CSI-RS repetition is set as on, the feedback information includes a power related to a CSI-RS resource.

13. The base station of claim 11 , wherein in case that the information on the CSI-RS repetition is set as on, a periodicity is the same for all of the plurality of CSI-RS resources.

14. The base station of claim 11 , wherein in case that the information on the CSI-RS repetition is set as on, a number of antenna ports is set to 1 or 2 for all of the plurality of CSI-RS resources.

15. The base station of claim 11 , wherein the controller is further configured to:

transmit, to the terminal, the plurality of CSI-RSs corresponding to the plurality of CSI-RS resources based on different beams, in case that the information on the CSI-RS repetition is set as off.

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

a transceiver; and

a controller operably coupled to the transceiver and configured to:

receive, from a base station, configuration information on a channel state information reference signal (CSI-RS) resource set, the configuration information including configurations on a plurality of CSI-RS resources included in the CSI-RS resource set and information on a CSI-RS repetition, wherein the information on the CSI-RS repetition is set as either on or off, and wherein the plurality of CSI-RS resources included in the CSI-RS resource set are associated with a same beam in case that the information on the CSI-RS repetition is set as on,

receive, from the base station, a plurality of CSI-RSs corresponding to the plurality of CSI-RS resources based on the configuration information, wherein the plurality of CSI-RSs are transmitted based on the same beam in case that the information on the CSI-RS repetition is set as on,

obtain feedback information based on the received plurality of CSI-RSs, and

transmit, to the base station, the feedback information,

17. The terminal of claim 16 , wherein, in case that the information on the CSI-RS repetition is set as on, the feedback information includes a power related to a CSI-RS resource.

18. The terminal of claim 16 , wherein in case that the information on the CSI-RS repetition is set as on, a periodicity is the same for all of the plurality of CSI-RS resources.

19. The terminal of claim 16 , wherein in case that the information on the CSI-RS repetition is set as on, a number of antenna ports is set to 1 or 2 for all of the plurality of CSI-RS resources.

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

not assume that the plurality of CSI-RSs are transmitted based on the same beam in case that the information on the CSI-RS repetition is set as off.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 7, 2018

From: KWAK, YOUNGWOO; NOH, HOONDONG; SHIN, CHEOLKYU

To: SAMSUNG ELECTRONICS CO., LTD.

Reel/Frame 046814/0257 →

Priority Claims (1)

KR 10-2017-0111275 · Aug 31, 2017 · national

Continuity (1)

Related Publication 20190068343A1 · Feb 28, 2019