METHOD FOR DYNAMIC ALLOCATION OF RADIO RESOURCES IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

• US 20150055584A1
• Filed: 04/30/2013
• Published: 02/26/2015
• Est. Priority Date: 04/30/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungmin, Seo, Hanbyul
• Granted Patent: US 9,549,395 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for transmitting an uplink signal of a terminal using multiple component carriers in a wireless communication system and, more particularly, to a method for transmitting an uplink signal of a terminal using multiple component carriers in a wireless communication system which supports carrier aggregation, comprising the steps of: receiving setting information on a second-type component carrier from a base station through a first-type component carrier; and transmitting an uplink signal to the base station through the second-type component carrier, wherein the use of the second-type component carrier for a specific subframe is changed according to the setting information.

Claims

1. A method of transmitting an uplink signal, which is transmitted by a user equipment using a plurality of component carriers (CCs) in a wireless communication system supporting carrier aggregation, comprising the steps of:

receiving configuration information on a second type component carrier from an eNode B via a first type component carrier; and

transmitting the uplink signal to the eNode B via the second type component carrier,

wherein a usage for a specific subframe of the second type component carrier varies according to the configuration information.

2. The method of claim 1, wherein the first type component carrier corresponds to a carrier to which control information for the user equipment is transmitted and wherein the second type component carrier corresponds to a carrier to which the control information for the user equipment is not transmitted.

3. The method of claim 1, wherein the second type component carrier is demodulated using a user equipment specific reference signal (cell specific reference signal (DM-RS)) or a channel state information-reference signal (CSI-RS).

4. The method of claim 1, wherein the specific subframe corresponds to a subframe configured not to transmit a specific reference signal.

5. The method of claim 4, wherein the specific reference signal corresponds to a common reference signal (CRS).

6. The method of claim 1, wherein the specific subframe corresponds to a downlink subframe configured not to transmit a specific reference signal.

7. The method of claim 1, wherein the specific subframe corresponds to a subframe of which a usage of a radio resource is changed via a cross-carrier scheduling using the first component carrier.

8. The method of claim 1, wherein a usage of a radio resource is indicated by a physical control channel or upper layer signaling.

9. The method of claim 1, wherein if control information used for transmitting an uplink data is not received in an uplink subframe existing prior to the specific subframe, a usage of a radio resource is indicated using a blind decoding on the uplink subframe.

10. The method of claim 1, wherein the specific subframe is indicated by the eNode B and wherein if uplink control information or downlink control information is not transmitted to the specific subframe, a usage of a radio resource changes.

11. A user equipment transmitting an uplink signal using a plurality of component carriers (CCs) in a wireless communication system supporting carrier aggregation, comprising:

a radio frequency (RF) unit; and

a processor, the processor configured to receive configuration information on a second type component carrier from an eNode B via a first type component carrier, the processor configured to transmit the uplink signal to the eNode B via the second type component carrier,

wherein a usage for a specific subframe of the second type component carrier varies according to the configuration information.