Method and apparatus for transmitting power headroom information in a communication system

Patent metadata

Field	Value
Publication number	US-11743839-B2
Application number	US-202117302683-A
Country	US
Kind code	B2
Filing date	May 10, 2021
Priority date	May 4, 2017
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

The present disclosure relates to a communication 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). 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. In addition, a method of a terminal in a wireless communication system, includes: receiving system information including first uplink waveform information for an initial access; transmitting a radio resource control (RRC) connection request message based on the first uplink waveform information; receiving an RRC connection response message including second uplink waveform information for uplink data transmission; and transmitting data based on the second uplink waveform.

First claim

What is claimed is:

1. A method performed by a terminal in a communication system, the method comprising:
receiving, from a base station, a radio resource control (RRC) configuration including information indicating whether a plurality of power headrooms for multiple transmission and reception points (TRPs) is to be reported;
identifying a power headroom reporting (PHR) including the plurality of power headrooms for the multiple TRPs in case that the information indicates the plurality of power headrooms for the multiple TRPs to be reported, wherein a cell is associated with the multiple TRPs; and
transmitting, to the base station, the PHR including the plurality of power headrooms for the multiple TRPs.

2. The method of claim 1 , wherein the PHR is triggered in case that at least one pathloss for the multiple TRPs is changed more than a threshold value, and wherein the RRC configuration includes the threshold value.

3. The method of claim 1 , wherein the RRC configuration includes a number of power headrooms to be reported.

4. The method of claim 1 , wherein each of the plurality of power headrooms corresponds to an index of each of the multiple TRPs.

5. A method performed by a base station in a communication system, the method comprising:
transmitting, to a terminal, a radio resource control (RRC) configuration including information indicating whether a plurality of power headrooms for multiple transmission and reception points (TRPs) is to be reported; and
receiving, from the terminal, a power headroom reporting (PHR) including including the plurality of power headrooms for the multiple TRPs based on the information indicating the plurality of power headrooms for the multiple TRPs to be reported, wherein a cell is associated with the multiple TRPs.

6. The method of claim 5 , wherein the PHR is received in case that at least one pathloss for the multiple TRPs is changed more than a threshold value, and wherein the RRC configuration includes the threshold value.

7. The method of claim 5 , wherein the RRC configuration includes a number of power headrooms to be reported.

8. The method of claim 5 , wherein each of the plurality of power headrooms corresponds to an index of each of the multiple TRPs.

9. A terminal in a communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive, from a base station, a radio resource control (RRC) configuration including information indicating whether a plurality of power headrooms for multiple transmission and reception points (TRPs) is to be reported,
identify a power headroom reporting (PHR) including the plurality of power headrooms for the multiple TRPs in case that the information indicates the plurality of power headrooms for the multiple TRPs to be reported, wherein a cell is associated with the multiple TRPs, and
transmit, to the base station, the PHR including the plurality of power headrooms for the multiple TRPs.

10. The terminal of claim 9 , wherein the PHR is triggered in case that at least one pathloss for the multiple TRPs is changed more than a threshold value, and wherein the RRC configuration includes the threshold value.

11. The terminal of claim 9 , wherein the RRC configuration includes a number of power headrooms to be reported.

12. The terminal of claim 9 , wherein each of the plurality of power headrooms corresponds to an index of each of the multiple TRPs.

13. A base station in a communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit, to a terminal, a radio resource control (RRC) configuration including information indicating whether a plurality of power headrooms for multiple transmission and reception points (TRPs) is to be reported, and
receive, from the terminal, a power headroom reporting (PHR) including including the plurality of power headrooms for the multiple TRPs based on the information indicating the plurality of power headrooms for the multiple TRPs to be reported, wherein a cell is associated with the multiple TRPs.

14. The base station of claim 13 , wherein the PHR is received in case that at least one pathloss for the multiple TRPs is changed more than a threshold value, and wherein the RRC configuration includes the threshold value.

15. The base station of claim 13 , wherein the RRC configuration includes a number of power headrooms to be reported.

16. The base station of claim 13 , wherein each of the plurality of power headrooms corresponds to an index of each of the multiple TRPs.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Ryoo Sunheui
• Jung Jungsoo
• Kang Hyunjeong
• Ryu Hyunseok
• Park Seunghoon

Classifications

• H04W52/365 Primary

  Power headroom reporting · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L5/0053

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

• H04L27/0008

  arrangements for allowing a transmitter or receiver to use more than one type of modulation (negotiating modulation type for two-way transmission paths H04L5/1453) · CPC title

• H04L27/2636

  with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM] · CPC title