Method for activating or deactivating a cell in a wireless communication system and a device therefor

• US 10,397,863 B2
• Filed: 07/18/2016
• Issued: 08/27/2019
• Est. Priority Date: 08/21/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Sunyoung, Yi, Seungjune
• Primary Examiner(s): Cattungal, Ajay
• Application Number:
  US15/753,743
• Publication Number:
  US 20180255512A1
• Time in Patent Office: 1,135 Days
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for activating or deactivating a cell in a wireless communication system, the method comprising: receiving an A/D MAC CE on a specific cell among the plurality of cells, wherein all of values of Ci fields of the A/D MAC CE are set to a same value, and performing activation or deactivation of the specific cell according to the same value.

Claims

1. A method for a user equipment (UE) configured with a plurality of cells operating in a wireless communication system, the method comprising:

receiving an activation/deactivation (A/D) medium access control (MAC) control element (CE) on a specific cell among the plurality of cells, wherein all of values of Ci fields of the A/D MAC CE are set to a same value; and

performing activation or deactivation of the specific cell according to the same value.

2. The method according to claim 1,

wherein the UE activates the specific cell if the same value is ‘

1’

, or deactivates the specific cell if the same value is ‘

0’

.

3. The method according to claim 1,

wherein the UE considers that the A/D MAC CE is received on the specific cell, if the UE receives a physical downlink control channel (PDCCH) which indicates that a MAC protocol data unit (PDU) is transmitted on the specific cell and the A/D MAC CE is included in the MAC PDU.

4. The method according to claim 3,

wherein a cell on which the UE receives the PDCCH is same as the specific cell, or another cell which is for scheduling the specific cell among the plurality of cells.

5. The method according to claim 1,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if the UE receives an indication indicating that the UE activates or deactivates a cell on which the A/D MAC CE is received.

6. The method according to claim 1,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if a number of the plurality of cells is equal to or more than a certain value.

7. The method according to claim 1,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if the plurality of cells include a cell whose cell index is equal to or larger than a certain value.

8. The method according to claim 1,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if a highest cell index among cell indices of the plurality of cells is equal to or larger than a certain value.

9. A User Equipment (UE) for operating in a wireless communication system, the UE comprising:

a Radio Frequency (RF) module; and

a processor operably coupled with the RF module and configured to;

receive an activation/deactivation (A/D) medium access control (MAC) control element (CE) on a specific cell among the plurality of cells, wherein all of values of Ci fields of the A/D MAC CE are set to a same value; and

perform activation or deactivation of the specific cell according to the same value.

10. The UE according to claim 9,

wherein the UE activates the specific cell if the same value is ‘

1’

, or deactivates the specific cell if the same value is ‘

0’

.

11. The UE according to claim 9,

wherein the UE considers that the A/D MAC CE is received on the specific cell, if the UE receives a physical downlink control channel (PDCCH) which indicates that a MAC protocol data unit (PDU) is transmitted on the specific cell and the A/D MAC CE is included in the MAC PDU.

12. The UE according to claim 11,

wherein a cell on which the UE receives the PDCCH is same as the specific cell, or another cell which is for scheduling the specific cell among the plurality of cells.

13. The UE according to claim 9,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if the UE receives an indication indicating that the UE activates or deactivates a cell on which the A/D MAC CE is received.

14. The UE according to claim 9,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if a number of the plurality of cells is equal to or more than a certain value.

15. The UE according to claim 9,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if the plurality of cells include a cell whose cell index is equal to or larger than a certain value.

16. The UE according to claim 9,

wherein the UE performs activation or deactivation of the specific cell according to the same value, if a highest cell index among cell indices of the plurality of cells is equal to or larger than a certain value.