Method for receiving ACK/NACK signal in mobile communication system

• US 8,155,070 B2
• Filed: 03/19/2008
• Issued: 04/10/2012
• Est. Priority Date: 03/19/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Dae Won, Kim, Bong Hoe, Yun, Young Woo, Kim, Ki Jun, Roh, Dong Wook, Yoon, Suk Hyon, Ahn, Joon Kui, Seo, Dong Youn, Kim, Hak Seong, Lee, Jung Hoon, Kim, Eun Sun, Choi, Sung Duk
• Primary Examiner(s): Wu, Jianye
• Application Number:
  US12/450,209
• Publication Number:
  US 20100098005A1
• Time in Patent Office: 1,483 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 1/06 using space diversity
• 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 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• 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

A method for transmitting information of resources for use in transmission of ACK/NACK signals in a mobile communication system is disclosed. An example method for receiving ACK/NACK signals in a mobile communication system is also disclosed. When resources for transmission of data and resources for transmission of control information of the data are scheduled through virtual unit resources, the method identifies information of resources for receiving an ACK/NACK signal for transmission data mapped to information of at least one of a virtual unit resource allocated to the transmission data and a virtual unit resource allocated to control information of the transmission data, and receives the ACK/NACK signal for the transmission data through the information of resources for receiving the ACK/NACK signal.

Claims

1. A method of receiving an ACK/NACK (Acknowledgement/Negative ACK) signal from a network node in a mobile communication system, the method comprising:

receiving from the network node control information for uplink resource allocation, the control information including resource block allocation information and information for reference signal;

transmitting to the network node a data by using at least one resource block indicated by the resource block allocation information; and

receiving from the network node an ACK/NACK signal of the data,

wherein a resource index for the ACK/NACK signal is identified by using the information for reference signal and an index related with a resource block of the at least one resource block.

2. The method of claim 1, wherein the resource index for the ACK/NACK signal is identified by using a sum of the index related with the at least one resource block and a value indicated by the information for reference signal.

3. The method of claim 1, wherein the index related with the at least one resource block is a lowest index among at least one resource block index indicated by the resource block allocation information.

4. The method of claim 1, wherein the information for reference signal is used for indicating a cyclic shift value of demodulation reference signal (DMRS) for the data.

5. The method of claim 1, wherein the control information for the uplink resource allocation is received via at least one control channel element (CCE) which is mapped to first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

6. The method of claim 1, wherein the ACK/NACK signal is received via first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

7. A method of transmitting an ACK/NACK (Acknowledgement/Negative ACK) signal to a user equipment in a mobile communication system, the method comprising:

transmitting to the user equipment control information for uplink resource allocation, the control information including resource block allocation information and information for reference signal;

receiving from the user equipment data by using at least one resource block indicated by the resource block allocation information; and

transmitting to the user equipment an ACK/NACK signal of the data,

wherein a resource index for the ACK/NACK signal is identified by using the information for reference signal and an index related with a resource block of the at least one resource block.

8. The method of claim 7, wherein the resource index for the ACK/NACK signal is identified by using a sum of the index related with the at least one resource block and a value indicated by the information for reference signal.

9. The method of claim 7, wherein the index related with the at least one resource block is a lowest index among at least one resource block index indicated by the resource block allocation information.

10. The method of claim 7, wherein the information for reference signal is used for indicating a cyclic shift value of demodulation reference signal (DMRS) for the data.

11. The method of claim 7, wherein the control information for the uplink resource allocation is transmitted via at least one control channel element (CCE) which is mapped to first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

12. The method of claim 7, wherein the ACK/NACK signal is transmitted via first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

13. A user equipment (UE) for receiving an ACK/NACK (Acknowledgement/Negative ACK) signal from a network node in a mobile communication system, the UE comprising:

a memory unit; and

a processor,

wherein the processor is configured to receive from the network node control information for uplink resource allocation, the control information including resource block allocation information and information for reference signal, configured to transmit to the network node a data by using at least one resource block indicated by the resource block allocation information, and configured to receive from the network node an ACK/NACK signal of the data, and

wherein a resource index for the ACK/NACK signal is identified by using the information for reference signal and an index related with a resource block of the at least one resource block.

14. The UE of claim 13, wherein the resource index for the ACK/NACK signal is identified by using a sum of the index related with the at least one resource block and a value indicated by the information for reference signal.

15. The UE of claim 13, wherein the index related with the at least one resource block is a lowest index among at least one resource block index indicated by the resource block allocation information.

16. The UE of claim 13, wherein the information for reference signal is used for indicating a cyclic shift value of demodulation reference signal (DMRS) for the data.

17. The UE of claim 13, wherein the control information for the uplink resource allocation is received via at least one control channel element (CCE) which is mapped to first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

18. The UE of claim 13, wherein the ACK/NACK signal is received via first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

19. A network node for transmitting an ACK/NACK (Acknowledgement/Negative ACK) signal to a user equipment in a mobile communication system, the network node comprising:

a memory unit; and

a processor,

wherein the processor is configured to transmit to the user equipment control information for uplink resource allocation, the control information including resource block allocation information and information for reference signal, configured to receive from the user equipment data by using at least one resource block indicated by the resource block allocation information, and configured to transmit to the user equipment an ACK/NACK signal of the data,

wherein a resource index for the ACK/NACK signal is identified by using the information for reference signal and an index related with a resource block of the at least one resource block.

20. The network node of claim 19, wherein the resource index for the ACK/NACK signal is identified by using a sum of the index related with the at least one resource block and a value indicated by the information for reference signal.

21. The network node of claim 19, wherein the index related with the at least one resource block is a lowest index among at least one resource block index indicated by the resource block allocation information.

22. The network node of claim 19, wherein the information for reference signal is used for indicating a cyclic shift value of demodulation reference signal (DMRS) for the data.

23. The network node of claim 19, wherein the control information for the uplink resource allocation is transmitted via at least one control channel element (CCE) which is mapped to first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.

24. The network node of claim 19, wherein the ACK/NACK signal is transmitted via first n orthogonal frequency division multiplexing (OFDM) symbol(s) in a subframe.