Method and user equipment for determining control channel resource

1. A method for determining a control channel resource, comprising:

detecting, by a user equipment device (UE), a downlink control channel of a base station, wherein the downlink control channel carries scheduling information of a downlink data channel and is formed by at least one control channel logical element, and the at least one control channel logical element is mapped to at least one antenna port of the base station;

acquiring, by the UE, antenna port information of a first antenna port of the base station corresponding to a first control channel logical element of a successfully detected downlink control channel, an offset, and sequence number information of the first control channel logical element; and

determining, by the UE, a first control channel resource according to the sequence number information, the antenna port information and the offset, wherein the first control channel resource is used to feed back acknowledgment (ACK)/non-acknowledgment (NACK) information with respect to a downlink data channel corresponding to the successfully detected downlink control channel.

2. The method according to claim 1 , wherein the sequence number information comprises a sequence number of a control channel logical element which is the first control channel logical element.

3. The method according to claim 2 , further comprising:

when sending the ACK/NACK information by using a spatial orthogonal resource transmit diversity (SORTD) scheme, determining, by the UE, according to at least one of a sequence number of a control channel logical element next to the first control channel logical element in the first control channel logical element and a sequence number of a second antenna port next to the first antenna port, a second control channel resource used to feed back the ACK/NACK information.

4. The method according to claim 1 , wherein the antenna port information at least comprises one of a sequence number of the first antenna port and the quantity of antenna ports of the at least one antenna port.

5. The method according to claim 1 , wherein that the at least one control channel logical element is mapped to at least one antenna port comprises:

mapping, by the UE, the at least one control channel logical element to a physical resource block in the at least one antenna port; and

the acquiring, by the UE, the sequence number information comprises:

acquiring, by the UE, the sequence number information according to a pre-defined or notified mapping relationship between the first control channel logical element and the physical resource block; and/or

the acquiring, by the UE, the antenna port information comprises:

acquiring, by the UE, the antenna port information according to a pre-defined or notified mapping relationship between the first control channel logical element and the physical resource block.

6. The method according to claim 1 , wherein the offset is dynamically notified by the base station or be semi-statically configured by a high layer.

7. The method according to claim 6 , wherein the offset is set with respect to at least one of the user equipment device and a cell of the user equipment device.

8. The method according to claim 1 , wherein the antenna port is a demodulation reference signal (DMRS) antenna port.

9. The method according to claim 1 , wherein the at least one control channel logical element corresponding to the UE is mapped to one antenna port.

10. A user equipment device for determining a control channel resource, comprising:

a receiver, coupled with a processor, configured to receive a downlink control channel of a base station, wherein the downlink control channel carries scheduling information of a downlink data channel, and is formed by at least one control channel logical element, and the at least one control channel logical element is mapped to at least one antenna port of the base station;

the processor, configured to detect the downlink control channel received by the receiver;

acquire antenna port information of a first antenna port of the base station corresponding to a first control channel logical element of a successfully detected downlink control channel, an offset, and sequence number information of the first control channel logical element; and

determine a first control channel resource according to the sequence number information, the antenna port information and the offset; and

a transmitter, configured to, through the determined first control channel resource, feed back acknowledgment (ACK)/non-acknowledgment (NACK) information with respect to a downlink data channel corresponding to the successfully detected downlink control channel.

11. The user equipment device according to claim 10 , wherein the sequence number information comprises a sequence number of a control channel logical element which is the first control channel logical element.

12. The user equipment device according to claim 11 ,

wherein the processor, is further configured to: when the ACK/NACK information is sent by using a spatial orthogonal resource transmit diversity (SORTD) scheme, determine, according to at least one of a sequence number of a control channel logical element next to the first control channel logical element in the first control channel logical element and a sequence number of a second antenna port next to the first antenna port, a second control channel resource used to feed back the ACK/NACK information.

13. The user equipment device according to claim 10 , wherein the antenna port information at least comprises one of a sequence number of the first antenna port and the quantity of antenna ports of the at least one antenna port.

14. The user equipment device according to claim 10 , wherein the processor is specifically configured to detect the downlink control channel sent by the base station, and the at least one control channel logical element is mapped to a physical resource block in the at least one antenna port; and

the processor is specifically configured to acquire the sequence number information according to a pre-defined or notified mapping relationship between the first control channel logical element and the physical resource block; and/or

the processor is specifically configured to acquire the antenna port information according to a pre-defined or notified mapping relationship between the first control channel logical element and the physical resource block.

15. The user equipment device according to claim 10 , wherein the processor is specifically configured to acquire at least one of the antenna port information and the offset, wherein the offset is dynamically notified by the base station or semi-statically configured by a high layer.

16. The user equipment device according to claim 10 , wherein the processor is specifically configured to acquire at least one of the antenna port information and the offset, wherein the offset is set with respect to at least one of the user equipment device and a cell of the user equipment device.

17. The user equipment device according to claim 10 , wherein the antenna port is a demodulation reference signal (DMRS) antenna port.

18. The user equipment device according to claim 10 , wherein the at least one control channel logical element corresponding to the UE is mapped to one antenna port.