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

• US 10,149,281 B2
• Filed: 10/08/2015
• Issued: 12/04/2018
• 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:
  US14/878,682
• Publication Number:
  US 20160029366A1
• Time in Patent Office: 1,153 Days
• Field of Search: None
• 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 is received. Downlink control information (DCI), transmitted using a first antenna port of a base station on an enhanced physical downlink control channel (EPDCCH) using at least one of control channel elements (CCEs), is received. A resource of a physical uplink control channel (PUCCH) is determined based on a first CCE of the at least one of CCEs, the first antenna port, information in the DCI, and the resource start offset in the configuration information, if a transmission type of the EPDCCH is localized transmission. A hybrid automatic repeat request acknowledgement (HARQ-ACK) signal is transmitted on the resource to the base station.

Claims

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

receiving configuration information comprising a resource start offset;

receiving downlink control information (DCI) transmitted using a first antenna port of a base station on an enhanced physical downlink control channel (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, the first antenna port, information in the DCI, and the resource start offset in the configuration information, in response to a transmission type of the EPDCCH being localized transmission; and

transmitting a hybrid automatic repeat request acknowledgement (HARQ-ACK) signal on the resource to the base station.

2. The method of claim 1, wherein the DCI comprises 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 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 first antenna port, a third parameter determined from the DCI, and a fourth parameter configured by the resource start offset.

5. 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.

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

transmitting configuration information comprising a resource start offset;

transmitting, to a user equipment (UE), downlink control information (DCI) using a first antenna port of a base station on an enhanced physical downlink control channel (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, the first antenna port, information in the DCI, and the resource start offset in the configuration information, in response to a transmission type of the EPDCCH being localized transmission; and

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

7. The method of claim 6, wherein the DCI comprises a resource offset used for determining the resource of the PUCCH.

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

9. The method of claim 6, wherein 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 first antenna port, a third parameter determined from the DCI, and a fourth parameter configured by the resource start offset.

10. The method of claim 6, wherein the EPDCCH consists of the at least one of the CCEs in a time resource region for downlink data transmission.

11. An apparatus of a user equipment (UE) for wireless communications, the apparatus comprising:

a receiver configured to receive configuration information comprising a resource start offset, and receive downlink control information (DCI) transmitted using a first antenna port of a base station on an enhanced physical downlink control channel (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, the first antenna port, information in the DCI, and the resource start offset in the configuration information, in response to a transmission type of the EPDCCH being localized transmission; and

a transmitter configured to transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) signal on the resource to the base station.

12. The apparatus of claim 11, wherein the DCI comprises a resource offset used for determining the resource of the PUCCH.

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

14. The apparatus of claim 11, wherein 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 first antenna port, a third parameter determined from the DCI, and a fourth parameter configured by the resource start offset.

15. The apparatus of claim 11, wherein the EPDCCH consists of the at least one of the CCEs in a time resource region for downlink data transmission.

16. 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 transmit, to a user equipment (UE), downlink control information (DCI) using a first antenna port of a base station on an enhanced physical downlink control channel (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, the first antenna port, information in the DCI, and the resource start offset in the configuration information, in response to a transmission type of the EPDCCH being localized transmission; and

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

17. The apparatus of claim 16, wherein the DCI comprises a resource offset used for determining the resource of the PUCCH.

18. The apparatus of claim 17, wherein the resource offset is two bits.

19. The apparatus of claim 16, wherein 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 form the first antenna port, a third parameter determined from the DCI, and a fourth parameter configured by the resource start offset.

20. The apparatus of claim 16, wherein the EPDCCH consists of the at least one of the CCEs in a time resource region for downlink data transmission.