METHOD FOR EFFICIENTLY TRANSMITTING PHYSICAL CHANNEL IN MULTI-CARRIER AGGREGATION STATE TO SUPPORT BROADBAND

• US 20110268032A1
• Filed: 10/29/2009
• Published: 11/03/2011
• Est. Priority Date: 10/29/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Han, Seung Hee, Lee, Moon II, Kwon, Yeong Hyeon, Chung, Jae Hoon, Kim, So Yeon
• Granted Patent: US 9,681,423 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• 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: H04W 72/04 Wireless resource allocation

Abstract

The present invention relates to a wireless connection system, and more specifically to a method for efficiently transmitting a control channel in a multi-carrier aggregation state. According to one aspect of the invention, a method for enabling a terminal to transmit data in a broadband wireless connection system that supports multiband comprises the steps of: receiving uplink acknowledgement information from a base station through a first downlink component carrier among plural downlink component carriers available in the terminal; transmitting data to the base station through an uplink resource indicated by the uplink acknowledge information; and receiving feedback information from the base station through the first control channel of the first downlink component carrier, wherein the feedback information indicates whether there is an error in the reception of the transmitted data.

Claims

1-13. -13. (canceled)

14. A method for transmitting data carried out by a user equipment (UE) in a wireless access system supporting multi-carriers, the method comprising:

receiving a first uplink (UL) grant information for a first UL component carrier (CC) from a base station (BS) through a first control channel of a first downlink (DL) CC among a plurality of DL CCs available for the UE;

transmitting data to the BS through uplink (UL) resources indicated by the first UL grant information; and

receiving feedback infoiiiiation indicating a reception status of the transmitted data from the base station through a second control channel of the first DL CC.

15. The method according to claim 14, wherein the first UL CC is linked with a plurality of DL CCs including the first DL CC.

16. The method according to claim 14, wherein the reception of the feedback information is performed at a subframe which comes after a predetermined number of subframes from a subframe indicated by the first UL grant information.

17. The method according to claim 14, wherein the first control channel is a Physical Downlink Control Channel (PDCCH) and the second channel is a Physical Hybrid ARQ Indicator Channel (PHICH).

18. A method for receiving data carried out by a base station (BS) in a wireless access system supporting multi-carriers, the method comprising:

transmitting a first uplink (UL) grant information for a first UL component carrier (CC) to a user equipment (UE) through a first control channel of a first downlink (DL) CC among a plurality of DL CCs available for the UE;

receiving data from the UE through uplink (UL) resources indicated by the first UL grant information;

determining a reception status of the received data; and

transmitting feedback information indicating the determined reception status to the UE through a second control channel of the first DL CC.

19. The method according to claim 18, wherein the feedback information is transmitted through the first DL CC only.

20. The method according to claim 18, wherein the uplink (UL) resources are uplink resources of an uplink (UL) component carrier not linked to the first DL component carrier.

21. The method according to claim 18, wherein the first UL CC is linked with a plurality of DL CCs including the first DL CC.

22. The method according to claim 18, wherein the transmission of the feedback information is performed irrespective of a ratio between the number of DL CCs available in the user equipment (UE) and the number of UL CCs available in the user equipment (UE).

23. The method according to claim 18, wherein the first control channel is a Physical Downlink Control Channel (PDCCH) and the second channel is a Physical Hybrid ARQ Indicator Channel (PHICH).

24. The method according to claim 18, wherein the reception of the feedback information is performed at a subframe which comes after a predetermined number of subframes from a subframe indicated by the first UL grant information.

25. A user equipment (UE) operated in a wireless access system supporting multi-carriers, the UE comprising:

a processor; and

a radio frequency (RF) module for transceiving a radio frequency (RF) signal externally under a control of the processor,

wherein the processor, upon receiving a first uplink (UL) grant infoiniation for a first UL component carrier (CC) from a base station (BS) through a first control channel of a first downlink (DL) CC among a plurality of DL CCs available for the UE, transmits data to the BS through uplink (UL) resources indicated by the first UL grant information, receives feedback infoimation indicating a reception status of the transmitted data from the base station through a second control channel of the first DL CC.

26. The user equipment (UE) according to claim 25, wherein the first UL CC is not linked to the first DL CC.

27. The user equipment (UE) according to claim 25, wherein the processor is configured to receive the feedback information through the second control channel of the first DL CC, irrespective of a ratio between the number of DL CCs available in the user equipment (UE) and the number of UL CCs available in the user equipment (UE).

28. The user equipment (UE) according to claim 25, wherein the first UL CC is linked with a plurality of DL CCs including the first DL CC.

30. The user equipment (UE) according to claim 25, wherein the first control channel is a Physical Downlink Control Channel (PDCCH) and the second channel is a Physical Hybrid ARQ Indicator Channel (PHICH).