METHOD FOR RECONFIGURING TIME ALIGNMENT TIMER

• US 20100284376A1
• Filed: 01/06/2009
• Published: 11/11/2010
• Est. Priority Date: 01/07/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seung-June, Park, Sung-Jun, Lee, Young-Dae, Chun, Sung-Duck
• Granted Patent: US 9,066,290 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 56/0045 compensating for timing error by altering transmission time
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

Disclosed is the radio (wireless) communication system providing a radio communication service and the terminal, and more particularly, to a method for reconfiguring a timer of a mobile terminal in an Evolved Universal Mobile Telecommunications System (E-UMTS) evolved from the Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.

Claims

1. A method of reconfiguring a timer of a mobile terminal in wireless communication system, the method comprising:

receiving a Radio Resource Control (RRC) message from a network, wherein the RRC message includes a first timer value;

performing a timer based on the first timer value by receiving a command for starting the timer with respect to the first timer value;

receiving a second timer value; and

restarting the timer based on the second timer value without receiving another command for restarting the timer with respect to the second timer value.

2. The method of claim 1, wherein the RRC message is at least one of system information (SI), radio bearer reconfiguration, and RRC connection reconfiguration.

3. The method of claim 1, wherein the timer is a time alignment timer.

4. The method of claim 1, wherein the command is a time advance command (TAC).

5. The method of claim 1, wherein the second timer value is received by at least one of a RRC message, a MAC (Medium Access Control) message, and PDCCH (Physical Downlink Control Channel) message.

6. The method of claim 1, wherein at least one of the first timer value, the second timer value and the command is received by a control element (CE) contained in a MAC protocol data unit (PDU).

7. A method of reconfiguring a timer of a mobile terminal in wireless communication system, the method comprising:

receiving a Radio Resource Control (RRC) message from a network, wherein the RRC message includes a first timer value;

performing a timer based on the first timer value by receiving a first command for starting the timer with respect to the first timer value;

receiving a second command for restarting the timer;

determining if there is an available timer value other than the first timer value after receiving the second command; and

restarting the timer with respect to the available timer value if there is the available timer value by the determining step or restarting the timer with respect to the first timer value if there is no available timer value by the determining step.

8. The method of claim 7, wherein the RRC message is at least one of system information (SI), radio bearer reconfiguration, and RRC connection reconfiguration.

9. The method of claim 7, wherein the timer is a time alignment timer.

10. The method of claim 7, wherein the command is a time advance command (TAC).

11. The method of claim 7, wherein the second timer value is received by at least one of a RRC message, a MAC (Medium Access Control) message, and PDCCH (Physical Downlink Control Channel) message.

12. The method of claim 7, wherein at least one of the first timer value, the second timer value and the command is received by a control element (CE) contained in a MAC protocol data unit (PDU).