Method and apparatus for performing power control by terminal in wireless communication system using multiple carriers

• US 9,237,596 B2
• Filed: 11/15/2010
• Issued: 01/12/2016
• Est. Priority Date: 11/15/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Yeong Hyeon, Kim, So Yeon, Moon, Sung Ho, Chung, Jae Hoon, Han, Seung Hee
• Primary Examiner(s): Nguyen, Brian D
• Assistant Examiner(s): Bhatti, Hashim
• Application Number:
  US13/509,969
• Publication Number:
  US 20130044662A1
• Time in Patent Office: 1,884 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to a terminal in a wireless communication system that supports multiple carriers, the terminal comprising: a receiving module that receives, from a base station, control information which indicates whether to operate hybrid automatic repeat request (HARQ) process-based multiple carriers; and a process that controls to allow the multiple carriers to be received in a section at which a particular HARQ process indicated in the control information is activated.

Claims

1. A method of performing power management at a user equipment (UE) configured with a primary frequency resource and one or more non-primary frequency resources in a wireless communication system, the method comprising:

activating the one or more non-primary frequency resources; and

deactivating the one or more non-primary frequency resources on expiry of a specific time period for which the one or more non-primary frequency resources are activated and configured by Radio Resource Control (RRC) signaling, the specific time period being independent of discontinuous reception (DRX) related operation.

2. The method of claim 1, wherein the same active time is applied to all of the one or more non-primary activated frequency resources.

4. The method of claim 1, wherein the primary frequency resource includes a primary component carrier, and the one or more non-primary frequency resources include one or more non-primary component carriers.

3. A method of performing power management at a user equipment (UE) configured with a primary frequency resource and one or more non-primary frequency resources in a wireless communication system, the method comprising:

configuring a DRX (Discontinuous Reception) cycle, the DRX cycle including an active time; and

monitoring PDCCH (Physical Downlink Control CHannel) on one or more activated frequency resources only during the active time of every DRX cycle,

wherein the primary frequency re-source is always activated, and the one or more non-primary frequency resources can be activated or deactivated, and

wherein activation/deactivation of the one or more non-primary frequency resources is indicated using a field of Layer 2 (L2) message, the field having a fixed bit size regardless of a number of configured frequency resources.

5. A user equipment (LIE) for performing power management in a wireless communication system, wherein the user equipment is configured with a primary frequency resource and one or more non-primary frequency resources, the user equipment comprising:

a Radio Frequency (RF) module; and

a processor configured to;

activate the one or more non-primary frequency resources, and

deactivate the one or more non-primary frequency resources on expiry of a specific time period for which the one or more non-primary frequency resources are activated and configured by Radio Resource Control (RRC) signaling, the specific time period being independent of discontinuous reception (DRX) related operation.

6. The user equipment of claim 5, wherein the same active is applied to all of the one or more non-primary activated frequency resources.

7. The user equipment of claim 5, wherein the primary frequency resource includes a primary component carrier, and the one or more non-primary frequency resources include one or more non-primary component carriers.