METHOD AND DEVICE FOR ACTIVATING SECONDARY CARRIER IN WIRELESS COMMUNICATION SYSTEM FOR USING CARRIER AGGREGATION TECHNIQUE

• US 20130208689A1
• Filed: 11/07/2011
• Published: 08/15/2013
• Est. Priority Date: 11/05/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Soeng Hun, Jang, Jae Hyuk, Ng, Boon Loong, Van Lieshout, Gert Jan, Kim, Sang Bum, Jeong, Kyeong In
• Granted Patent: US 9,055,565 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0085 when channel conditions change
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

The present invention proposes a method for activating secondary carriers in addition to the primary carrier in a wireless communication system supporting carrier aggregation technology. Through the present invention, the UE sorts the operations for activating an SCell into two groups that are executed at different timings, thereby facilitating communication without malfunctioning.

Claims

1. A secondary carrier activation method of a terminal in a wireless communication system supporting carrier aggregation, the method comprising:

receiving secondary carrier aggregation activation information instructing activation of secondary carriers configured to the terminal;

checking a first timing in configuring the activation of the secondary carriers and performing first operations at the first timing; and

checking a second timing and performing second operations before the second timing.

2. The method of claim 1, wherein the first timing is (N+m)^th subframe where N denotes a subframe carrying the secondary carrier activation information and m is an integer equal to or greater than 1.

3. The method of claim 2, wherein the first operations comprise at lease on of scheduling channel monitoring, channel quality information measurement, uplink or downlink data transmission/reception, channel quality information report, and sounding reference signal transmission.

4. The method of claim 3, wherein the second timing is (N+z+4)^th subframe where N denotes the subframe carrying the secondary carrier activation information and z is an integer equal to or greater than m.

5. The method of claim 4, wherein the second operations comprises reporting channel measurement information.

6. A terminal for activating secondary carriers under the control of a base station in a wireless communication system supporting carrier aggregation, the terminal comprising:

a transceiver which transmits and receives control signals or data to and from the base station; and

a controller which controls receiving secondary carrier aggregation activation information instructing activation of secondary carriers configured to the terminal from the base station, checking a first timing in configuring the activation of the secondary carriers and performing first operations at the first timing, and checking a second timing and performing second operations before the second timing.

7. The terminal of claim 6, wherein the first timing is (N+m)^th subframe where N denotes a subframe carrying the secondary carrier activation information and m is an integer equal to or greater than 1.

8. The terminal of claim 7, wherein the first operations comprise at lease on of scheduling channel monitoring, channel quality information measurement, uplink or downlink data transmission/reception, channel quality information report, and sounding reference signal transmission.

9. The terminal of claim 8, wherein the second timing is (N+z+4)^th subframe where N denotes the subframe carrying the secondary carrier activation information and z is an integer equal to or greater than m.

10. The terminal of claim 9, wherein the second operations comprises reporting channel measurement information.