METHOD FOR TRANSMITTING CONTROL INFORMATION ON TRANSMISSION POINTS AND CORRESPONDING TRANSMISSION POINT, AS WELL AS METHOD FOR MAPPING UPLINK CONTROL CHANNEL RESOURCE OF TERMINAL AND CORRESPONDING TERMINAL

• US 20150208391A1
• Filed: 07/30/2013
• Published: 07/23/2015
• Est. Priority Date: 08/06/2012
• Status: Active Grant

• Current Assignee: KT Corporation
• Original Assignee: KT Corporation
• Inventors: Park, Kyujin
• Granted Patent: US 10,396,960 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• 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 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present disclosure relates to a method and apparatus for transmitting uplink control information for a terminal. That is, the method and apparatus may be provided for transmitting downlink control information through a downlink control channel which is introduced into a data domain and receiving control information. More particularly, a method and apparatus may be provided for mapping an uplink control channel resource for feeding back uplink HARQ ACK/NACK of the terminal for a downlink data channel through downlink scheduling information, which is transmitted via the downlink control channel.

Claims

1. A control information transmission method of a transmission/reception point for transmitting control information with respect to a User Equipment (UE) through a data region of a resource block pair of a subframe, the method comprising:

allocating at least one of downlink control channel sets each formed of X resource block pairs of the subframe, where the at least one downlink control channel includes an Enhance Physical Downlink Control Channel and the X is a natural number greater than or equal to 1 and less than or equal to a number of resource blocks (RBs) in the entire band;

transmitting, to the UE, uplink control channel resource starting offset indication information for each of the at least one of downlink control channel sets; and

transmitting, to the UE, the control information through at least one control channel element indexed for each downlink control channel set.

2. The method as claimed in claim 1, wherein:

each of the control channel elements Enhanced Control Channel Elements is formed of one of 4 resource element groups and 8 resource element groups where the control channel elements includes Enhanced Control Channel Elemenets; and

the 4 resource element groups and the 8 resource element groups forming each control channel element are located in a single physical resource block pair or in two or more physical resource block pairs.

3. The method as claimed in claim 1, wherein:

the control information includes downlink scheduling information; and

the lowest index of the control channel element through which the control information is transmitted and the uplink control channel resource starting offset indication information are used as components for resource determination when uplink control channel resource mapping is performed for ACK/NACK with respect to a Physical Downlink Shared Channel (PDSCH) allocated based on the downlink scheduling information.

4. The method as claimed in claim 3, wherein:

the downlink scheduling information includes dynamic offset indication information; and

the dynamic offset indication information is used as another component for resource determination when the uplink control channel resource mapping is executed for ACK/NACK with respect to the Physical Downlink Shared Channel (PDSCH) allocated based on the downlink scheduling information.

5. The method as claimed in claim 3, wherein a transmission antenna port of the downlink scheduling information is used as another component for resource determination when the uplink control channel resource mapping is performed for ACK/NACK with respect to the Physical Downlink Shared Channel (PDSCH) allocated based on the downlink scheduling information.

6. The method as claimed in claim 1, wherein transmitting the resource starting offset indication information transmits the uplink control channel resource starting offset indication information to the UE through higher layer signaling.

7. The method as claimed in claim 1, wherein:

the downlink control channel set is a distributed downlink control channel set, among an localized downlink control channel set and the distributed downlink control channel set;

in the localized downlink control channel set, resource element groups forming each control channel element are located in a single physical resource block pair; and

in the distributed downlink control channel set, resource element groups forming each control channel element are located in two or more physical resource block pairs.

8. The method as claimed in claim 1, wherein X of X resource block pairs of the subframe is one of 2, 4, 8, and 16.

9. An uplink control channel resource mapping method of a User Equipment (UE), the method comprising:

receiving, from a transmission/reception point, uplink control channel resource starting offset indication information for each of at least one downlink control channel set formed of X resource block pairs of a subframe, where the downlink control channel includes an Enhanced Physical Downlink Control Channel and X is a natural number greater than or equal to 1 and less than or equal to the number of resource blocks (RBs);

receiving, from a transmission/reception point, control information associated with downlink scheduling information through at least one control channel element indexed for each downlink control channel set, where the control channel element includes an Enhanced Control Channel Element; and

executing uplink control channel resource mapping for ACK/NACK with respect to a (Physical Downlink Shared Channel (PDSCH) allocated based on the downlink scheduling information, using the uplink control channel resource starting offset indication information and the lowest index of the control channel element as components for resource determination.

10. The method as claimed in claim 9, wherein:

each of the control channel elements is formed of one of 4 resource element groups and 8 resource element groups; and

4 or 8 resource element groups forming each control channel element is located in a single physical resource block pair or in two or more physical resource block pairs.

11. The method as claimed in claim 9, wherein X of X resource block pairs of the subframe is one of 2, 4, 8, and 16.

12. The method as claimed in claim 9, wherein:

the downlink scheduling control information includes dynamic offset indication information; and

the uplink control channel resource mapping is performed using the dynamic offset indication information as another component for resource determination.

13. The method as claimed in claim 9, wherein receiving the resource starting offset indication information receives the uplink control channel resource starting offset indication information through higher layer signaling.

14. The method as claimed in claim 9, wherein the uplink control channel resource mapping is performed using a transmission antenna port of the downlink scheduling control information as another component for resource determination.

15. (canceled)

16. (canceled)

17. (canceled)

18. (canceled)

25. The UE as claimed in claim 18, wherein the uplink control channel resource mapping is performed using a transmission antenna port of the downlink scheduling control information as another component for resource determination.

19. (canceled)

20. (canceled)

21. A User Equipment (UE), comprising:

a receiver configured to receive, from a transmission/reception point, uplink control channel resource starting offset indication information for each of at least one downlink control channel set formed of X resource block pairs of a subframe, where the downlink control channel include an Enhanced Physical Downlink Control Channel and X is a natural number greater than or equal to 1 and less than or equal to the number of RBs in the entire band, and to receive, from a transmission/reception point, control information associated with downlink scheduling information through at least one control channel element indexed for each downlink control channel set, where the control channel element includes an Enhanced Control Channel Element; and

a controller configured to perform uplink control channel resource mapping for ACK/NACK with respect to Physical Downlink Shared Channel (PDSCH) allocated based on the downlink scheduling information, using the uplink control channel resource starting offset indication information and the lowest index of the control channel element as components for resource determination.

22. The UE as claimed in claim 21, wherein X of X resource block pairs of the subframe is one of 2, 4, 8, and 16.

23. The UE as claimed in claim 21, wherein:

the downlink scheduling control information includes dynamic offset indication information; and

the uplink control channel resource mapping is executed using the dynamic offset indication information as another component for resource determination.

24. The UE as claimed in claim 21, wherein the receiver is configured to receive the uplink control channel resource starting offset indication information through higher layer signaling.