Method for transmitting uplink control information, user equipment, method for receiving uplink control information, and base station

• US 10,181,936 B2
• Filed: 04/08/2016
• Issued: 01/15/2019
• Est. Priority Date: 08/19/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hakseong, Seo, Hanbyul, Kim, Kijun, Park, Jonghyun
• Primary Examiner(s): Morlan, Robert M
• Assistant Examiner(s): Kaur, Pamit
• Application Number:
  US15/094,855
• Publication Number:
  US 20160226645A1
• Time in Patent Office: 1,012 Days
• 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: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• 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

In the present invention, a physical uplink control channel (PUCCH) resource, which is used for transmitting acknowledgement/negative ACK (ACK/NACK) information related to downlink control information, is determined on the basis of n⁽¹⁾_PUCCH=f(n_CCE,N⁽¹⁾_PUCCH,X), when the format of the downlink control information that is transmitted/received through a physical downlink control channel (PDCCH) is in accordance with a transmission mode of a user equipment, wherein n⁽¹⁾_PUCCH is a PUCCH resource index, N⁽¹⁾_PUCCH is a value which is received from the base station, n_CCE is a first control channel element (CCE) index in the PDCCH, X is a parameter which is not the n_CCE and the N⁽¹⁾_PUCCH, and wherein f is a function having the n_CCE, N⁽¹⁾_PUCCH, and the X as a factor.

Claims

1. A method for transmitting, by a user equipment, an uplink signal in a wireless communication system, the method comprising:

receiving, by the user equipment, a first PUCCH resource offset associated with a first type physical downlink control channel (PDCCH) and a second PUCCH resource offset associated with a second physical downlink control channel (e-PDCCH);

detecting, by the user equipment, at least the PDCCH located in a control region of a subframe or the e-PDCCH located in a data region of the subframe; and

transmitting, by the user equipment, a physical uplink control information (PUCCH) carrying acknowledgement/negative acknowledgement (ACK/NACK) information associated with the PDCCH or the e-PDCCH,

wherein the PUCCH is transmitted using a PUCCH resource, and

wherein the PUCCH resource is determined based on a lowest index of a PDCCH allocation unit included in the PDCCH and the first PUCCH resource offset when the ACK/NACK information is associated with the PDCCH, and the PUCCH resource is determined based on a lowest index of an e-PDCCH allocation unit included in the e-PDCCH and the second PUCCH resource offset when the ACK/NACK information is associated with the e-PDCCH.

2. The method according to claim 1, wherein the second PUCCH resource offset is specific to the user equipment.

3. The method according to claim 1, wherein the first PUCCH resource offset is specific to the user equipment.

4. The method according to claim 1, wherein the first PUCCH resource offset is received in addition to a cell specific PUCCH resource offset.

5. The method according to claim 1, further comprising:

receiving, by the user equipment, subframe information indicating in which subframe the e-PDCCH can be received.

6. An user equipment for transmitting an uplink signal in a wireless communication system, the user equipment comprising:

a radio frequency (RF) unit configured to transmit/receive a signal; and

a processor configured to control the RF unit, the processor configured to;

control the RF unit to receive a first PUCCH resource offset associated with a first type physical downlink control channel (PDCCH) and a second PUCCH resource offset associated with a second physical downlink control channel (e-PDCCH);

detect at least the PDCCH located in a control region of a subframe or the e-PDCCH located in a data region of the subframe; and

control the RF unit to transmit a physical uplink control information (PUCCH) carrying acknowledgement/negative acknowledgement (ACK/NACK) information associated with the PDCCH or the e-PDCCH,

wherein the PUCCH is transmitted using a PUCCH resource, and

wherein the PUCCH resource is determined based on a lowest index of a PDCCH allocation unit included in the PDCCH and the first PUCCH resource offset when the ACK/NACK information is associated with the PDCCH, and the PUCCH resource is determined based on a lowest index of an e-PDCCH allocation unit included in the e-PDCCH and the second PUCCH resource offset when the ACK/NACK information is associated with the e-PDCCH.

7. The user equipment according to claim 6, wherein the second PUCCH resource offset is specific to the user equipment.

8. The user equipment according to claim 6, wherein the first PUCCH resource offset is specific to the user equipment.

9. The user equipment according to claim 6, wherein the first PUCCH resource offset is received in addition to a cell specific PUCCH resource offset.

10. The user equipment according to claim 6, wherein the processor is configured to control the RF unit to receive subframe information indicating in which subframe the e-PDCCH can be received.

11. A method for receiving, by a base station, an uplink signal from a user equipment in a wireless communication system, the method comprising:

transmitting, by the base station, a first PUCCH resource offset associated with a first type physical downlink control channel (PDCCH) and a second PUCCH resource offset associated with a second physical downlink control channel (e-PDCCH);

transmitting, by the base station, at least the PDCCH located in a control region of a subframe or the e-PDCCH located in a data region of the subframe; and

receiving, by the base station, a physical uplink control information (PUCCH) carrying acknowledgement/negative acknowledgement (ACK/NACK) information associated with the PDCCH or the e-PDCCH,

wherein the PUCCH is received using a PUCCH resource, and

wherein the PUCCH resource is determined based on a lowest index of a PDCCH allocation unit included in the PDCCH and the first PUCCH resource offset when the ACK/NACK information is associated with the PDCCH, and the PUCCH resource is determined based on a lowest index of an e-PDCCH allocation unit included in the e-PDCCH and the second PUCCH resource offset when the ACK/NACK information is associated with the e-PDCCH.

12. The method according to claim 11, wherein the second PUCCH resource offset is specific to the user equipment.

13. The method according to claim 11, wherein the first PUCCH resource offset is specific to the user equipment.

14. The method according to claim 11, wherein the first PUCCH resource offset is transmitted in addition to a cell specific PUCCH resource offset.

15. The method according to claim 11, further comprising:

transmitting, by the base station, subframe information indicating in which subframe the e-PDCCH can be transmitted.

16. A method for receiving, by a base station, an uplink signal from a user equipment in a wireless communication system, the method comprising:

a radio frequency (RF) unit configured to transmit/receive a signal; and

a processor configured to control the RF unit, the processor configured to;

control the RF unit to transmit a first PUCCH resource offset associated with a first type physical downlink control channel (PDCCH) and a second PUCCH resource offset associated with a second physical downlink control channel (e-PDCCH);

control the RF unit to transmit at least the PDCCH located in a control region of a subframe or the e-PDCCH located in a data region of the subframe; and

control the RF unit to receive a physical uplink control information (PUCCH) carrying acknowledgement/negative acknowledgement (ACK/NACK) information associated with the PDCCH or the e-PDCCH,

wherein the PUCCH is received using a PUCCH resource, and

wherein the PUCCH resource is determined based on a lowest index of a PDCCH allocation unit included in the PDCCH and the first PUCCH resource offset when the ACK/NACK information is associated with the PDCCH, and the PUCCH resource is determined based on a lowest index of an e-PDCCH allocation unit included in the e-PDCCH and the second PUCCH resource offset when the ACK/NACK information is associated with the e-PDCCH.

17. The base station according to claim 16, wherein the second PUCCH resource offset is specific to the user equipment.

18. The base station according to claim 16, wherein the first PUCCH resource offset is specific to the user equipment.

19. The base station according to claim 16, wherein the first PUCCH resource offset is transmitted in addition to a cell specific PUCCH resource offset.

20. The base station according to claim 16, wherein the processor is configured to control the RF unit to transmit subframe information indicating in which subframe the e-PDCCH can be transmitted.