Transmission method of downlink signal in wireless communication system and transmission apparatus therefor

• US 9,001,755 B2
• Filed: 08/23/2010
• Issued: 04/07/2015
• Est. Priority Date: 08/23/2009
• 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, MINH TRANG T
• Application Number:
  US13/391,774
• Publication Number:
  US 20120218952A1
• Time in Patent Office: 1,688 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0087 when data requirements change
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention provides a method for a base station to transmit a downlink signal in a wireless communication system, the method comprising: allocating a resource to a downlink signal; and transmitting the downlink signal using the allocated resource. In the downlink signal transmission method and apparatus thereof, a resource for transmitting a Physical Downlink Shared Channel (PDSCH) among the downlink signals is allocated from a specific OFDM symbol that is fixed within a subframe.

Claims

1. A method for receiving a PDSCH (Physical Downlink Shared Channel) signal by a communication apparatus in a wireless communication system, comprising:

receiving a RRC (Radio Resource Control) signal including information used for identifying a region from which the PDSCH signal is received;

receiving a PDCCH (Physical Downlink Control Channel) signal including resource allocation information for the PDSCH signal; and

receiving the PDSCH signal from a starting OFDM (Orthogonal Frequency Division Multiplexing) symbol of the region,

wherein the PDCCH signal is received on a first downlink component carrier and the PDSCH signal is received on a second downlink component carrier which is different from the first downlink component carrier.

2. The method of claim 1, wherein the information in the RRC signal indicates the starting OFDM symbol from which the PDSCH signal is received.

3. The method of claim 1, wherein the information in the RRC signal is commonly applied to a plurality of downlink component carriers.

4. The method of claim 3, further comprising:

receiving another PDCCH signal on the first downlink component carrier, and

receiving the PDSCH signal from the starting OFDM symbol on a third downlink component carrier different from the first downlink component carrier.

5. A communication apparatus for receiving a PDSCH (Physical Downlink Shared Channel) signal in a wireless communication system, comprising:

a RF (Radio Frequency) module; and

a processor,

wherein the processor is configured to;

receive a RRC (Radio Resource Control) signal including information used for identifying a region from which the PDSCH signal is received;

receive a PDCCH (Physical Downlink Control Channel) signal including resource allocation information for the PDSCH signal; and

receive the PDSCH signal from a starting OFDM (Orthogonal Frequency Division Multiplexing) symbol of the region,

wherein the PDCCH signal is received on a first downlink component carrier and the PDSCH signal is received on a second downlink component carrier which is different from the first downlink component carrier.

6. The communication apparatus of claim 5, wherein the information in the RRC signal indicates the starting OFDM symbol from which the PDSCH signal is received.

7. The communication apparatus of claim 5, wherein the information in the RRC signal is commonly applied to a plurality of downlink component carriers.

8. The communication apparatus of claim 7, wherein the processor is further configured to receive another PDCCH signal on the first downlink component carrier, and receive the PDSCH signal from the starting OFDM symbol on a third downlink component carrier different from the first downlink component carrier.

9. A method for transmitting a PDSCH (Physical Downlink Shared Channel) signal by a transmitter in a wireless communication system, comprising:

transmitting a RRC (Radio Resource Control) signal including information used for identifying a region from which the PDSCH signal is transmitted;

transmitting a PDCCH (Physical Downlink Control Channel) signal including resource allocation information for the PDSCH signal; and

transmitting the PDSCH signal from a starting OFDM (Orthogonal Frequency Division Multiplexing) symbol of the region,

wherein the PDCCH signal is transmitted on a first downlink component carrier and the PDSCH signal is transmitted on a second downlink component carrier which is different from the first downlink component carrier.

10. The method of claim 9, wherein the information in the RRC signal indicates the starting OFDM symbol from which the PDSCH signal is received.

11. The method of claim 9, wherein the information in the RRC signal is commonly applied to a plurality of downlink component carriers.

12. The method of claim 11, further comprising:

transmitting another PDCCH signal on the first downlink component carrier, and

transmitting the PDSCH signal from the starting OFDM symbol on a third downlink component carrier different from the first downlink component carrier.

13. A transmitter for transmitting a PDSCH (Physical Downlink Shared Channel) signal in a wireless communication system, comprising:

a RF (Radio Frequency) module; and

a processor,

wherein the processor is configured to;

transmit a RRC (Radio Resource Control) signal including information used for identifying a region from which the PDSCH signal is transmitted;

transmit a PDCCH (Physical Downlink Control Channel) signal including resource allocation information for the PDSCH signal; and

transmit the PDSCH signal from a starting OFDM (Orthogonal Frequency Division Multiplexing) symbol of the region,

wherein the PDCCH signal is transmitted on a first downlink component carrier and the PDSCH signal is transmitted on a second downlink component carrier which is different from the first downlink component carrier.

14. The transmitter of claim 13, wherein the information in the RRC signal indicates the starting OFDM symbol from which the PDSCH signal is transmitted.

15. The transmitter of claim 13, wherein the information in the RRC signal is commonly applied to a plurality of downlink component carriers.

16. The transmitter of claim 15, wherein the processor is further configured to transmit another PDCCH signal on the first downlink component carrier, and transmit the PDSCH signal from the starting OFDM symbol on a third downlink component carrier different from the first downlink component carrier.