METHOD AND APPARATUS FOR HANDLING SECONDARY CELL DEACTIVATION TIMER IN WIRELESS COMMUNICATION SYSTEM

• US 20170054568A1
• Filed: 04/29/2015
• Published: 02/23/2017
• Est. Priority Date: 04/29/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Youngdae, Jung, Sunghoon, Ahn, Joonkui
• Granted Patent: US 10,390,385 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 16/24 Cell structures
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 60/06 De-registration or detaching
• CPC Class Codes: H04W 76/38 triggered by timers
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method and apparatus for handling a secondary cell (SCell) deactivation timer in a wireless communication system is provided. When a user equipment (UE) is receiving a specific channel or service on a SCell from a network, the UE may start or restart a SCell deactivation timer whenever the SCell deactivation timer expires. Alternatively, the UE may delay expiry of a SCell deactivation timer whenever the SCell deactivation timer expires.

Claims

1. A method for handling, by a user equipment (UE), a secondary cell (SCell) deactivation timer in a wireless communication system, the method comprising:

receiving, by the UE, a specific channel or service on a SCell from a network; and

starting or restarting, by the UE, a SCell deactivation timer whenever the SCell deactivation timer expires.

2. The method of claim 1, wherein the SCell deactivation timer is associated with the SCell.

3. The method of claim 1, wherein the SCell deactivation timer is started or restarted at a transmission time interval (TTI) whenever the SCell deactivation timer expires in the TTI.

4. The method of claim 1, wherein the specific channel or service is a multimedia broadcast multicast services (MBMS) related channel or service.

5. The method of claim 1, wherein the specific channel or service is a device-to-device (D2D) related channel or service.

6. The method of claim 1, wherein the specific channel or service is a vehicle-to-everything (V2X) related channel or service.

7. A method for handling, by a user equipment (UE), a secondary cell (SCell) deactivation timer in a wireless communication system, the method comprising:

receiving, by the UE, a specific channel or service on a SCell from a network; and

delaying, by the UE, expiry of a SCell deactivation timer whenever the SCell deactivation timer expires.

8. The method of claim 7, wherein the SCell deactivation timer is associated with the SCell.

9. The method of claim 7, wherein the expiry of the SCell deactivation timer is delayed at a transmission time interval (TTI) whenever the SCell deactivation timer expires in the TTI.

10. The method of claim 7, wherein the expiry of the SCell deactivation timer is delayed by one or more TTIs.

11. The method of claim 7, wherein the specific channel or service is a multimedia broadcast multicast services (MBMS) related channel or service.

12. The method of claim 7, wherein the specific channel or service is a device-to-device (D2D) related channel or service.

13. The method of claim 7, wherein the specific channel or service is a vehicle-to-everything (V2X) related channel or service.