CONTROL SIGNAL TRANSMITTING METHOD AND APPARATUS IN RELAY STATION

• US 20120002593A1
• Filed: 03/05/2010
• Published: 01/05/2012
• Est. Priority Date: 03/05/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hak Seong, Seo, Han Byul, Kim, Ki Jun
• Granted Patent: US 8,761,077 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04L 25/24 Relay circuits using discharge tubes or semiconductor devices H04L25/22 takes precedence
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

A method of transmitting a control signal of a relay station is provided. The method includes: receiving a control signal and data from a base station in a first subframe; and transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal for the data to the base station in a second subframe, wherein a radio resource for transmitting the ACK/NACK signal is determined by a radio resource to which the control signal received in the first subframe is allocated and by a logical physical uplink control channel (PUCCH) index received by using a higher layer signal.

Claims

1. A method of transmitting a control signal of a relay station, the method comprising:

receiving a control signal and data from a base station in a first subframe; and

transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal for the data to the base station in a second subframe, wherein a radio resource for transmitting the ACK/NACK signal is determined by a radio resource to which the control signal received in the first subframe is allocated and by a logical physical uplink control channel (PUCCH) index received by using a higher layer signal.

2. The method of claim 1, wherein the logical PUCCH index is first allocated to a PUCCH resource which is allocated to a macro user equipment coupled to the base station, and is then allocated to an R-PUCCH resource which is allocated to the relay station.

3. The method of claim 1, wherein the logical PUCCH index transmitted to the relay station is an offset value with respect to a logical PUCCH index value which is transmitted to the macro user equipment coupled to the base station.

4. The method of claim 1, wherein the logical PUCCH index is allocated sequentially to a PUCCH resource allocated to the macro user equipment coupled to the base station, an SPS ACK/NACK and scheduling request signal resource allocated to the relay station, and a dynamic ACK/NACK resource allocated to the relay station.

5. The method of claim 4, wherein the logical PUCCH index indicates the dynamic ACK/NACK resource allocated to the relay station directly or indicates the dynamic ACK/NACK resource allocated to the relay station by the offset value with respect to the logical PUCCH index value transmitted to the macro user equipment.

6. The method of claim 1, wherein the logical PUCCH index is first allocated to an SPS radio resource allocated to the macro user equipment coupled to the relay station and the base station and is then allocated to a dynamic radio resource allocated to the relay station and the macro user equipment.

7. The method of claim 1, wherein if the relay station fails to receive the control signal in the first frame, the ACK/NACK signal is transmitted through a radio resource determined according to a configuration given by a higher layer signal.

8. An apparatus for wireless communication, the apparatus comprising:

a signal generator for generating and transmitting a radio signal; and

a processor coupled to the signal generator, wherein the processor receives a control signal and data from a base station in a first subframe, and transmits an acknowledgement/negative acknowledgement (ACK/NACK) signal for the data to the base station in a second subframe,

wherein the ACK/NACK signal is allocated to a radio resource determined by a radio resource to which the control signal received in the first subframe is allocated and a logical physical uplink control channel (PUCCH) index received by using a higher layer signal.