Methods and apparatuses for transmitting control information

1. A network device comprising:

a processor; and

a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the network device to perform actions, the actions comprising:

determining, based on a first control resource set (CORESET), a first configuration for transmitting first control information from the network device to a terminal device, the first configuration being different from a second configuration for transmitting second control information from a further network device to the terminal device and the second configuration being determined based on a second CORESET; and

transmitting, based on the first configuration, the first control information to the terminal device,

wherein

the first configuration indicates that a first set of resource elements (REs) in the first CORESET are allocated for transmitting the first control information via a first control channel and a second set of REs in the first CORESET are allocated for transmitting a first reference signal (RS) associated with the first control channel, and

the second configuration indicates that a third set of REs in the second CORESET are allocated for transmitting the second control information via a second control channel and a fourth set of REs in the second CORESET are allocated for transmitting a second RS associated with the second control channel.

2. The network device of claim 1 , wherein determining the first configuration comprises:

determining the first configuration, such that the first RS differs from the second RS based on at least one of the following: different resource allocation in time, frequency and/or code domain; different Orthogonal Covering Codes; different RS sequences and different cyclic shifts.

3. The network device of claim 2 , wherein the actions further comprises:

determining a first RS configuration for the first RS, the first RS configuration being different from a second RS configuration for the second RS, and the first and second RS configurations being based on different RS patterns and/or different RS sequences;

indicating the first RS configuration to the terminal device; and

transmitting, based on the second set of REs and the first RS configuration, the first RS to the terminal device.

4. The network device of claim 3 , wherein the first CORESET is same as the second CORESET.

5. The network device of claim 4 , wherein determining the first configuration comprises:

determining the first configuration, such that the first set of REs are at least partially separated from the third set of REs in time or frequency domain.

6. The network device of claim 1 , wherein the first CORESET is different from the second CORESET, and the first and second CORESETs are separated from each other in time and/or frequency domain.

7. The network device of claim 1 , wherein the first CORESET is different from the second CORESET, and the first and second CORESETs are at least partially overlapped with each other in time and/or frequency domain.

8. The network device of claim 7 , wherein the actions further comprises:

determining a first RS configuration for the first RS, the first RS configuration sharing a same RS pattern and a same RS sequence with a second RS configuration for the second RS; and

indicating the first RS configuration to the terminal device; and

transmitting, based on the second set of REs and the first RS configuration, the first RS to the terminal device.

9. A terminal device, comprising:

a processor; and

a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the terminal device to perform actions, the actions comprising:

performing a blind detection for control information in first and second control resource sets (CORESETs), wherein first control information is transmitted from a first network device to the terminal device based on a first configuration, second control information is transmitted from a second network device to the terminal device based on a second configuration, the first and second configurations are determined based on the first and second CORESETs respectively, and the first configuration is different from the second configuration;

in response to detecting the first control information from the first network device, communicating with the first network device based on the first control information; and

in response to detecting the second control information from the second network device, communicating with the second network device based on the second control information,

wherein

the first configuration indicates that a first set of resource elements (REs) in the first CORESET are allocated for transmitting the first control information via a first control channel and a second set of REs in the first CORESET are allocated for transmitting a first reference signal (RS) associated with the first control channel, and

the second configuration indicates that a third set of REs in the second CORESET are allocated for transmitting the second control information via a second control channel and a fourth set of REs in the second CORESET are allocated for transmitting a second RS associated with the second control channel.

10. The terminal device of claim 9 , wherein the first CORESET is same as the second CORESET.

11. The terminal device of claim 10 , wherein the actions further comprises:

receiving first and second RS configurations from the first and second network devices respectively, the first and second RS configurations indicating different RS patterns and/or different RS sequences for the first and second RSs; and

detecting the first RS from the first network device based on the first RS configuration, while detecting the second RS from the second network device based on the second RS configuration.

12. The terminal device of claim 11 , wherein performing the blind detection for control information comprises:

detecting the first control information at least based on the first RS; and

detecting the second control information at least based on the second RS.

13. The terminal device of claim 9 , wherein the first CORESET is different from the second CORESET, and the first and second CORESETs are separated from each other in both time and frequency domain.

14. The terminal device of claim 9 , wherein the first CORESET is different from the second CORESET, and the first and second CORESETs are at least partially overlapped with each other in time or frequency domain.

15. A method comprising:

determining, at a first network device and based on a first control resource set (CORESET), a first configuration for transmitting first control information from the first network device to a terminal device, the first configuration being different from a second configuration for transmitting second control information from a second network device to the terminal device and the second configuration being determined based on a second CORESET; and

transmitting, based on the first configuration, the first control information to the terminal device,

wherein

the first configuration indicates that a first set of resource elements (REs) in the first CORESET are allocated for transmitting the first control information via a first control channel and a second set of REs in the first CORESET are allocated for transmitting a first reference signal (RS) associated with the first control channel, and

the second configuration indicates that a third set of REs in the second CORESET are allocated for transmitting the second control information via a second control channel and a fourth set of REs in the second CORESET are allocated for transmitting a second RS associated with the second control channel.

16. The method of claim 15 , wherein determining the first configuration comprises:

determining the first configuration, such that the first RS differs from the second RS based on at least one of the following: different resource allocation in time, frequency and/or code domain; different Orthogonal Cover Codes; different RS sequences and different cyclic shifts.

17. The method of claim 16 , wherein the method further comprises:

determining a first RS configuration for the first RS, the first RS configuration being different from a second RS configuration for the second RS, and the first and second RS configurations being based on different RS patterns and/or different RS sequences;

indicating the first RS configuration to the terminal device; and

transmitting, based on the second set of REs and the first RS configuration, the first RS to the terminal device.