Method and apparatus for performing and reporting measurements by user equipment configured with multiple carriers in mobile communication systems

Patent metadata

Field	Value
Publication number	US-2016262118-A1
Application number	US-201615063348-A
Country	US
Kind code	A1
Filing date	Mar 7, 2016
Priority date	Mar 6, 2015
Publication date	Sep 8, 2016
Grant date	—

Abstract

A communication method and system for supporting a high data transmission rate fuse 5G communication systems with IoT technology to transmit data at a high rate after 4G systems. The method for a terminal in a wireless communication system supporting carrier aggregation includes receiving a control message including indication information, the indication information indicating that physical uplink control channel (PUCCH) feedback for at least one secondary cell (SCell) is transmitted on a SCell; identifying whether the SCell is configured to the terminal and is activated; and if the SCell is configured to the terminal and is activated, obtaining Type 2 power headroom information for the SCell.

First claim

What is claimed is:

1 . A method by a terminal in a wireless communication system supporting carrier aggregation, the method comprising:
receiving a control message including indication information, the indication information indicating that physical uplink control channel (PUCCH) feedback for at least one secondary cell (SCell) is transmitted on a SCell; identifying whether the SCell is configured to the terminal and is activated; and if the SCell is configured to the terminal and is activated, obtaining Type 2 power headroom information for the SCell.

2 . The method of claim 1 , wherein the indication information is included in the control message, if the PUCCH feedback for the at least one SCell is not transmitted on a primary cell (PCell) or a primary secondary cell (PSCell) and the SCell is used to transmit the PUCCH feedback for the at least one SCell.

3 . The method of claim 1 , further comprising:
receiving information indicating the SCell.

4 . The method of claim 1 , wherein the Type 2 power headroom information for the SCell is based on a difference between a maximum transmission power of the terminal in the SCell and a transmission power required for transmissions of physical uplink shared channel (PUSCH) and PUCCH.

5 . The method of claim 1 , further comprising:
transmitting a message including the obtained, Type 2 power headroom information for the SCell,
wherein the message further comprises information regarding a maximum transmission power of the terminal in the SCell,
the message further comprises a bitmap indicating a presence of power headroom information per SCell, and
a size of the bitmap is determined based on a number of SCells configured with an uplink.

6 . A method by a base station in a wireless communication system supporting carrier aggregation, the method comprising:
transmitting to a terminal a control message including indication information, the indication information indicating that physical uplink control channel (PUCCH) feedback for at least one secondary cell (SCell) is transmitted on a SCell; and receiving from the terminal a message including Type 2 power headroom information for the SCell, wherein the Type 2 power headroom information is included in the message if the SCell is configured to the terminal and is activated.

7 . The method of claim 6 , wherein the indication information is included in the control message, if the PUCCH feedback for the at least one SCell is not transmitted on a primary cell (PCell) or a primary secondary cell (PSCell) and the SCell is used to transmit the PUCCH feedback for the at least one SCell.

8 . The method of claim 6 , further comprising:
transmitting information indicating the SCell.

9 . The method of claim 6 , wherein the Type 2 power headroom information for the SCell is based on a difference between a maximum transmission power of the terminal in the SCell and a transmission power required for transmissions of physical uplink shared channel (PUSCH) and PUCCH.

10 . The method of claim 6 , wherein the message further comprises information regarding a maximum transmission power of the terminal in the SCell,
the message further comprises a bitmap indicating a presence of power headroom information per SCell, and a size of the bitmap is determined based on a number of SCells configured with an uplink.

11 . A terminal in a wireless communication system supporting carrier aggregation, the terminal comprising:
a transceiver configured to transmit and receive signals; and a controller configured to:
control a reception of a control message including indication information, the indication information indicating that physical uplink control channel (PUCCH) feedback for at least one secondary cell (SCell) is transmitted on a SCell,
identify whether the SCell is configured to the terminal and is activated,
if the SCell is configured to the terminal and is activated, obtain Type 2 power headroom information for the SCell.

12 . The terminal of claim 11 , wherein the indication information is included in the control message, if the PUCCH feedback for the at least one SCell is not transmitted on a primary cell (PCell) or a primary secondary cell (PSCell) and the SCell is used to transmit the PUCCH feedback for the at least one SCell.

13 . The terminal of claim 11 , wherein the controller is further configured to control a reception of information indicating the SCell.

14 . The terminal of claim 11 , wherein the Type 2 power headroom information for the SCell is based on a difference between a maximum transmission power of the terminal in the SCell and a transmission power required for transmissions of physical uplink shared channel (PUSCH) and PUCCH.

15 . The terminal of claim 11 , wherein:
the controller is configured to control a transmission of a message including the obtained, Type 2 power headroom information for the SCell; the message further comprises information regarding a maximum transmission power of the terminal in the SCell; the message further comprises a bitmap indicating a presence of power headroom information per SCell; and a size of the bitmap is determined based on a number of SCells configured with an uplink.

16 . A base station in a wireless communication system supporting carrier aggregation, the base station comprising:
a transceiver configured to transmit and receive signals; and a controller configured to:
transmit to a terminal a control message including indication information, the indication information indicating that physical uplink control channel (PUCCH) feedback for at least one secondary cell (SCell) is transmitted on a SCell; and
receive from the terminal a message including Type 2 power headroom information for the SCell,
wherein the Type 2 power headroom information is included in the message if the SCell is configured to the terminal and is activated.

17 . The base station of claim 16 , wherein the indication information is included in the control message, if the PUCCH feedback for the at least one SCell is not transmitted on a primary cell (PCell) or a primary secondary cell (PSCell) and the SCell is used to transmit the PUCCH feedback for the at least one SCell.

18 . The base station of claim 16 , wherein the controller is configured to transmit information indicating the SCell.

19 . The base station of claim 16 , wherein the Type 2 power headroom information for the SCell is based on a difference between a maximum transmission power of the terminal in the SCell and a transmission power required for transmissions of physical uplink shared channel (PUSCH) and PUCCH

20 . The base station of claim 16 , wherein the message further comprises information regarding a maximum transmission power of the terminal in the SCell;
the message further comprises a bitmap indicating a presence of power headroom information per SCell; and a size of the bitmap is determined based on a number of SCells configured with an uplink.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Soenghun
• Kim Sangbum
• Jang Jaehyuk
• Jeong Kyeongin

Classifications

• H04W52/365 Primary

  Power headroom reporting · CPC title

• H04W72/0473

  the resource being transmission power · CPC title

• H04W72/0413

  Electricity · mapped topic

• Y02D30/70

  in wireless communication networks · CPC title

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title