HARQ-ACK signal transmission in response to detection of control channel type in case of multiple control channel types

• US 10,142,969 B2
• Filed: 10/08/2015
• Issued: 11/27/2018
• Est. Priority Date: 03/05/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Papasakellariou, Aris, Cho, Joon-Young
• Primary Examiner(s): Rinehart, Mark H
• Assistant Examiner(s): Dewan, Sanjay K
• Application Number:
  US14/878,712
• Publication Number:
  US 20160028511A1
• Time in Patent Office: 1,146 Days
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• 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

Methods and apparatuses are provided for wireless communications. Configuration information including a resource start offset and information for a transmission type of an enhanced physical downlink control channel (EPDCCH) are transmitted. Downlink control information (DCI) is transmitted to a user equipment (UE) using at least one antenna port of a base station on the EPDCCH using at least one of control channel elements (CCEs). A resource of a physical uplink control channel (PUCCH) is determined based on a first CCE of the at least one of CCE, information in the DCI, and the resource start offset in the configuration information, if the transmission type of the EPDCCH is distributed transmission. A hybrid automatic repeat request acknowledgement (HARQ-ACK) signal is received on the determined resource.

Claims

1. A method for wireless communications, the method comprising:

transmitting configuration information comprising a resource start offset and information for a transmission type of an enhanced physical downlink control channel (EPDCCH);

transmitting, to a user equipment (UE), downlink control information (DCI) using at least one antenna port of a base station on the EPDCCH using at least one of control channel elements (CCEs);

determining a resource of a physical uplink control channel (PUCCH) based on a first CCE of the at least one of the CCEs. information in the DCI, and the resource start offset in the configuration information, in response to the transmission type of the EPDCCH being distributed transmission; and

receiving a hybrid automatic repeat request acknowledgement (HARQ-ACK) signal on the determined resource.

2. The method of claim 1, wherein the information in the DCI is a resource offset used for determining the resource of the PUCCH.

3. The method of claim 2, wherein the resource offset is two bits.

4. The method of claim 1, wherein, in response to the transmission type of the EPDCCH being distributed transmission, an index of the resource of the PUCCH is determined as a sum of a first parameter determined from the first CCE, a second parameter determined from the information in the DCI, and a third parameter configured by the resource start offset.

5. The method of claim 1, further comprising:

determining the resource of the PUCCH based on the first CCE of the at least one of the CCEs, the at least one antenna port, information in the DCI, and the resource start offset in the configuration information, in response to the transmission type of EPDCCH being localized transmission.

6. The method of claim 5, wherein the information in the DCI is a resource offset used for determining the resource of the PUCCH.

7. The method of claim 6, wherein the resource offset is two bits.

8. The method of claim 1, wherein, in response to the transmission type of the EPDCCH being localized transmission, an index of the resource of the PUCCH is determined as a sum of a first parameter determined from the first CCE, a second parameter determined from the at least one antenna port, a third parameter determined from the information in the DCI, and a fourth parameter configured by the resource start offset.

9. The method of claim 1, wherein the EPDCCH consists of the at least one of the CCEs in a time resource region for downlink data transmission.

10. An apparatus of a base station for wireless communications, the apparatus comprising:

a transmitter configured to transmit configuration information comprising a resource start offset and information for a transmission type of an enhanced physical downlink control channel (EPDCCH), and transmit, to a user equipment (UE), downlink control information (DCI) using at least one antenna port of the base station on the EPDCCH using at least one of control channel elements (CCEs);

a processor configured to determine a resource of a physical uplink control channel (PUCCH) based on a first CCE of the at least one of the CCEs, information in the DCI, and the resource start offset in the configuration information, in response to the transmission type of the EPDCCH being configured for distributed transmission; and

a receiver configured to receive a hybrid automatic repeat request acknowledgement (HARQ-ACK) signal on the determined resource.

11. The apparatus of claim 10, wherein the information in the DCI is a resource offset used for determining the resource of the PUCCH.

12. The apparatus of claim 11, wherein the resource offset is two bits.

13. The apparatus of claim 10, wherein, in response to the transmission type of the EPDCCH being distributed transmission, an index of the resource of the PUCCH is determined as a first parameter determined from the first CCE, a second parameter determined from the DCI, and a third parameter configured by the resource start offset.

14. The apparatus of claim 10, wherein the processor is further configured to determine the resource of the PUCCH based on the first CCE of the at least one of the CCEs, the at least one antenna port, information in the DCI, and the resource start offset in the configuration information, in response to the transmission type of EPDCCH being localized transmission.

15. The apparatus of claim 14, wherein the information in the DCI is a resource offset used for determining the resource of the PUCCH.

16. The apparatus of claim 15, wherein the resource offset is two bits.

17. The apparatus of claim 10, wherein, in response to the transmission type of the EPDCCH being localized transmission, an index of the resource of the PUCCH is determined as a sum of a first parameter determined from the first CCE, a second parameter determined from the at least one antenna port, a third parameter determined from the DCI, and a fourth parameter configured by the resource start offset.

18. The apparatus of claim 10, wherein the EPDCCH consists of the at least one of the CCEs in a time resource region for downlink data transmission.