Method and device for component carrier management in a wireless communication system

• US 9,713,150 B2
• Filed: 01/05/2015
• Issued: 07/18/2017
• Est. Priority Date: 01/07/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung Jun, Chun, Sung Duck, Jung, Sung Hoon, Yi, Seung June, Lee, Young Dae
• Primary Examiner(s): Lamont, Benjamin
• Application Number:
  US14/589,559
• Publication Number:
  US 20150139059A1
• Time in Patent Office: 925 Days
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/00695 using split of the control plane or user plane
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Provided are a method and device in which a terminal manages component carriers in a wireless communication system. The terminal receives activation pattern data indicating activation or inactivation of at least one serving cell from a base station, and activates or inactivates the at least one component carrier in accordance with the activation pattern data.

Claims

1. A method of managing a component carrier by a user equipment in a wireless communication system, the method comprising:

receiving activation pattern information indicating activation or inactivation of at least one serving cell from a base station;

activating or inactivating the at least one component carrier according to the activation pattern information, the activation pattern information including an activation pattern indicating activation or inactivation of the at least one component carrier on a subframe basis, the activation pattern information further including a period of the activation pattern and at least one serving cell identifier indicating the at least one serving cell to which the activation pattern is applied, the activation pattern information being periodically applied such that a signaling overhead for activating or inactivating the at least one component carrier can be minimized, the activation pattern being expressed as a subframe-based bitmap, a size of the subframe-based bitmap being equal to the period of the activation pattern;

receiving an activation condition from the base station, the activation condition including;

a threshold value related to at least one of a quality of a downlink channel, a buffer status of the user equipment, a power headroom status of the user equipment, and a transmission count for a scheduling request signal, the activation condition further including at least one parameter for inactivating the at least one serving cell, the activation condition being received from the base station through a physical downlink control channel (PDCCH) message;

autonomously determining whether the at least one serving cell should be inactive by using the threshold value included in the activation condition, the determination being performed in a unit of a single subframe; and

inactivating the at least one serving cell based on the at least one parameter included in the activation condition.

2. The method of claim 1, wherein:

the at least component carrier corresponds to one cell; and

the component carrier to be activated or inactivated corresponds to a cell to be activated or inactivated.

3. The method of claim 2, wherein:

the at least one cell is at least one serving cell; and

the cell to be activated or inactivated may be a serving cell to be activated or inactivated.