METHOD AND APPARATUS FOR PERFORMING CROSS-CARRIER SCHEDULING FOR SPS

• US 20130058291A1
• Filed: 03/10/2011
• Published: 03/07/2013
• Est. Priority Date: 03/17/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ahn, Joon Kui, Han, Seung Hee, Noh, Min Seok, Kim, Min Gyu, Chung, Jae Hoon, Moon, Sung Ho, Yang, Suck Chel, Seo, Dong Youn, Kim, So Yeon
• Granted Patent: US 9,319,205 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus in which a base station transmits a signal to a relay in a wireless communication system. A method in which a terminal receives a downlink signal in a wireless communication system that supports carrier aggregation comprises: a step of receiving, on a first carrier, a physical downlink control channel (PDCCH) having no carrier indication information; and a step of receiving a physical downlink shared channel (PDSCH) using the scheduling information carried on the PDCCH, wherein the PDSCH is received on the first carrier in the event the PDCCH is a non-semi-persistent scheduling (SPS) PDCCH, and the PDSCH is received on a second carrier different from the first carrier in the event the PDCCH is an SPS PDCCH.

Claims

1. A method of receiving a downlink signal by a user equipment in a carrier aggregation supportive wireless communication system, the method comprising:

receiving a PDCCH (physical downlink control channel) with no carrier indication information via a first carrier; and

receiving a PDSCH (physical downlink shared channel) using a scheduling information carried on the PDCCH,

wherein if the PDCCH is a non-SPS (non-semi-persistent scheduling) PDCCH, the PDSCH is received on the first carrier and

wherein if the PDCCH is an SPS PDCCH, the PDSCH is received on a second carrier different from the first carrier.

2. The method of claim 1, wherein the second carrier is a carrier on which a latest SPS transmission has been performed.

3. The method of claim 1, wherein the second carrier is a primary carrier.

4. The method of claim 1, wherein the PDCCH is received via a common search space.

5. The method of claim 1, wherein the non-SPS PDCCH has a CRC (cyclic redundancy check) masked with a C-RNTI (cell-radio network temporary identifier) and wherein the SPS PDCCH has a CRC masked with an SPS C-RNTI.

6. A user equipment configured to receive a downlink signal in a carrier aggregation supportive wireless communication system, the user equipment comprising:

an RF (radio frequency) unit; and

a processor configured to receive a PDCCH (physical downlink control channel) with no carrier indication information via a first carrier, the processor configured to receive a PDSCH (physical downlink shared channel) using a scheduling information carried on the PDCCH,

wherein if the PDCCH is a non-SPS (non-semi-persistent scheduling) PDCCH, the PDSCH is received on the first carrier and

wherein if the PDCCH is an SPS PDCCH, the PDSCH is received on a second carrier different from the first carrier.

7. The user equipment of claim 6, wherein the second carrier is a carrier on which a latest SPS transmission has been performed.

8. The user equipment of claim 6, wherein the second carrier is a primary carrier.

9. The user equipment of claim 6, wherein the PDCCH is received via a common search space.

10. The user equipment of claim 6, wherein the non-SPS PDCCH has a CRC (cyclic redundancy check) masked with a C-RNTI (cell-radio network temporary identifier) and wherein the SPS PDCCH has a CRC masked with an SPS C-RNTI.