Method and apparatus for allocating and acquiring ACK/NACK resources in a mobile communication system

• US 9,949,250 B2
• Filed: 04/27/2015
• Issued: 04/17/2018
• Est. Priority Date: 06/15/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Young-Bum, Cho, Joon-Young, Papasakellariou, Aris, Kwon, Hwan-Joon
• Primary Examiner(s): Mesfin, Yemane
• Assistant Examiner(s): Banthrongsack, Jeff
• Application Number:
  US14/697,084
• Publication Number:
  US 20150230218A1
• Time in Patent Office: 1,086 Days
• Field of Search: None
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• 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
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method and apparatus are provided for receiving ACK/NACK information by a base station. The method includes transmitting data and control information to at least one UE, the control information being transmitted on a downlink control channel including at least one CCE; transmitting information related to cyclic shift values of a sequence used for transmission of the ACK/NACK information in an RB, wherein the ACK/NACK information and CQI are multiplexed in the RB; checking a resource for reception of ACK/NACK information mapped to the at least one CCE based on the information related to cyclic shift values and a mapping rule between CCEs and a resource for reception of the ACK/NACK information, wherein the resource for reception of the ACK/NACK information is identified by a cyclic shift index, an orthogonal sequence index, and a resource block index; and receiving the ACK/NACK information for the transmitted data using the checked resource.

Claims

1. A method for receiving acknowledgement (ACK)/negative ACK (NACK) information by a base station in a mobile communication system, the method comprising:

transmitting data and control information to at least one user equipment (UE), the control information being transmitted on a downlink control channel including at least one control channel element (CCE);

transmitting information related to cyclic shift values of a sequence used for transmission of the ACK/NACK information in a resource block (RB), wherein the ACK/NACK information and channel quality information (CQI) are multiplexed in the RB;

checking a resource for reception of ACK/NACK information mapped to the at least one CCE based on the information related to cyclic shift values and a mapping rule between CCEs and a resource for reception of the ACK/NACK information, wherein the resource for reception of the ACK/NACK information is identified by a cyclic shift index, an orthogonal sequence index, and a resource block index; and

receiving the ACK/NACK information for the transmitted data using the checked resource.

2. The method of claim 1, wherein the mapping rule is that as an index corresponding to a CCE sequentially increases, the cyclic shift index increases until exhausted and then resets, the orthogonal sequence index increases each time the cyclic shift index is exhausted, until exhausted, and then resets, and the resource block index of resources for reception of the ACK/NACK information increases each time the orthogonal sequence index is exhausted.

3. The method of claim 1, wherein the ACK/NACK information is received on a predetermined frequency band of a first slot included in a subframe and another frequency band of a second slot included in the subframe, and

wherein the another frequency band is different from the predetermined frequency band and arises from frequency hopping.

4. The method of claim 1, wherein the information related to cyclic shift values comprises information related to a number of samples, at intervals of which the sequence is cyclic-shifted.

5. The method of claim 4, wherein the information related to cyclic shift values further comprises information related to a minimum value or start value among the cyclic shift values of the sequence.

6. A method for transmitting acknowledgement (ACK)/negative ACK (NACK) information by a user equipment (UE) in a mobile communication system, the method comprising:

receiving data and control information from a base station, the control information being received on a downlink control channel including at least one control channel element (CCE);

receiving information related to cyclic shift values of a sequence used for transmission of the ACK/NACK information in a resource block (RB), wherein the ACK/NACK information and channel quality information (CQI) are multiplexed in the RB;

acquiring a resource for transmission of ACK/NACK information mapped to the at least one CCE based on the information related to cyclic shift values and a mapping rule between CCEs and a resource for transmission of the ACK/NACK information, wherein the resource for transmission of the ACK/NACK information is identified by a cyclic shift index, an orthogonal sequence index, and a resource block index; and

transmitting the ACK/NACK information for the received data using the acquired resource.

7. The method of claim 6, wherein the mapping rule is that as an index corresponding to a CCE sequentially increases, the cyclic shift index increases until exhausted and then resets, the orthogonal sequence index increases each time the cyclic shift index is exhausted, until exhausted, and then resets, and the resource block index of resources for reception of the ACK/NACK information increases each time the orthogonal sequence index is exhausted.

8. The method of claim 6, wherein the ACK/NACK information is transmitted on a predetermined frequency band of a first slot included in a subframe and another frequency band of a second slot included in the subframe, and

wherein the another frequency band is different from the predetermined frequency band and arises from frequency hopping.

9. The method of claim 6, wherein the information related to cyclic shift values comprises information related to a number of samples, at intervals of which the sequence is cyclic-shifted.

10. The method of claim 9, wherein the information related to cyclic shift values further comprises information related to a minimum value or start value among the cyclic shift values of the sequence.

11. A base station for receiving acknowledgement (ACK)/negative ACK (NACK) information in a mobile communication system, the base station comprising:

a transmitter configured to transmit data and control information to at least one user equipment (UE), the control information being transmitted on a downlink control channel including at least one control channel element (CCE), and transmit information related to cyclic shift values of a sequence used for transmission of the ACK/NACK information in a resource block (RB), wherein the ACK/NACK information and channel quality information (CQI) are multiplexed in the RB;

a controller configured to check a resource for reception of ACK/NACK information mapped to the at least one CCE based on the information related to cyclic shift values and a mapping rule between CCEs and a resource for reception of the ACK/NACK information, wherein the resource for reception of the ACK/NACK information is identified by a cyclic shift index, an orthogonal sequence index, and a resource block index; and

a receiver configured to receive the ACK/NACK information for the transmitted data using the checked resource.

12. The base station of claim 11, wherein the mapping rule is that as an index corresponding to a CCE sequentially increases, the cyclic shift index increases until exhausted and then resets, the orthogonal sequence index increases each time the cyclic shift index is exhausted, until exhausted, and then resets, and the resource block index of resources for reception of the ACK/NACK information increases each time the orthogonal sequence index is exhausted.

13. The base station of claim 11, wherein the ACK/NACK information is received on a predetermined frequency band of a first slot included in a subframe and another frequency band of a second slot included in the subframe, and

wherein the another frequency band is different from the predetermined frequency band and arises from frequency hopping.

14. The base station of claim 11, wherein the information related to cyclic shift values comprises information related to a number of samples, at intervals of which the sequence is cyclic-shifted.

15. The base station of claim 14, wherein the information related to cyclic shift values further comprises information related to a minimum value or start value among the cyclic shift values of the sequence.

16. A user equipment (UE) for transmitting acknowledgement (ACK)/negative ACK (NACK) information in a mobile communication system, the UE comprising:

a receiver configured to receive data and control information from a base station, the control information being received on a downlink control channel including at least one control channel element (CCE), and receive information related to cyclic shift values of a sequence used for transmission of the ACK/NACK information in a resource block (RB), wherein the ACK/NACK information and channel quality information (CQI) are multiplexed in the RB;

a controller configured to acquire a resource for transmission of ACK/NACK information mapped to at least one CCE based on a mapping rule between CCEs and a resource for transmission of the ACK/NACK information, wherein the resource for transmission of the ACK/NACK information is identified by a cyclic shift index, an orthogonal sequence index, and a resource block index; and

a transmitter configured to transmit the ACK/NACK information for the received data using the acquired resource.

17. The UE of claim 16, wherein the mapping rule is that as an index corresponding to a CCE sequentially increases, the cyclic shift index increases until exhausted and then resets, the orthogonal sequence index increases each time the cyclic shift index is exhausted, until exhausted, and then resets, and the resource block index of resources for reception of the ACK/NACK information increases each time the orthogonal sequence index is exhausted.

18. The UE of claim 16, wherein the ACK/NACK information is transmitted on a predetermined frequency band of a first slot included in a subframe and another frequency band of a second slot included in the subframe, and

wherein the another frequency band is different from the predetermined frequency band and arises from frequency hopping.

19. The UE of claim 16, wherein the information related to cyclic shift values comprises information related to a number of samples, at intervals of which the sequence is cyclic-shifted.

20. The UE of claim 19, wherein the information related to cyclic shift values further comprises information related to a minimum value or start value among the cyclic shift values of the sequence.