Method for transmitting signal, network device and terminal device

1. A method for transmitting a signal, applied to a terminal device, comprising:

determining a time-frequency resource for a reference signal required by a control channel, wherein the time-frequency resource for the reference signal comprises multiple sets of resource groups, and the resource group comprises two resource elements (RE) that are consecutive in a frequency domain;

receiving the reference signal via the time-frequency resource for the reference signal; and

demodulating the control channel according to the reference signal;

wherein for a plurality of terminal devices comprising the terminal device, the time-frequency resource for the reference signal is mapped, along with a configured control channel resource unit where the time-frequency resource for the reference signal is located, in a first control region within a system bandwidth in a manner of first a frequency domain and then a time domain;

wherein when different terminal devices comprising the terminal device receive the reference signal transmitted by adjacent beams, for the adjacent beams, there is a shift between locations of the time-frequency resource for the reference signal.

2. The method according to claim 1 , wherein before the determining a time-frequency resource for a reference signal required by a control channel, the method further comprises:

receiving reference signal configuration information transmitted by a network device, wherein the reference signal configuration information comprises time-frequency resource location information of the reference signal;

wherein the determining a time-frequency resource for a reference signal required by a control channel comprises:

determining the time-frequency resource for the reference signal according to the reference signal configuration information.

3. A network device, comprising a processor and a memory having executable instructions stored thereon that when executed by the processor cause the processor to:

determine a time-frequency resource for a reference signal required by a control channel, wherein the time-frequency resource for the reference signal comprises multiple sets of resource groups, and the resource group comprises two resource elements (RE) that are consecutive in a frequency domain; and

control a communication interface to transmit the reference signal via time-frequency resource for the reference signal;

wherein for a plurality of terminal devices, the time-frequency resource for the reference signal is mapped, along with a configured control channel resource unit where the time-frequency resource for the reference signal is located, in a first control region within a system bandwidth in a manner of first a frequency domain and then a time domain;

wherein when adjacent beams transmit the reference signal to different terminal devices, for the adjacent beams, there is a shift between locations of the time-frequency resource for the reference signal.

4. The network device according to claim 3 , wherein the time-frequency resource for the reference signal comprises two resource groups in one control channel resource unit.

5. The network device according to claim 4 , wherein there are 4 REs between the two resource groups.

6. The network device according to claim 3 , wherein the time-frequency resource for the reference signal of the same terminal device is located on one OFDM symbol.

7. The network device according to claim 3 , wherein for different beams, the shift between the locations of the time-frequency resource for the reference signal is determined at least according to a beam number.

8. The network device according to claim 3 , wherein when adjacent beams transmit the reference signal to the same terminal device using a joint transmission mode, locations of the time-frequency resource for the reference signal are the same for the adjacent beams.

9. The network device according to claim 8 , wherein for different terminal devices, a shift between the locations of the time-frequency resource for the reference signal is determined at least according to a wireless network temporary identifier (RNTI) of a terminal device.

10. The network device according to claim 3 , wherein a location of the time-frequency resource for the reference signal in a control channel unit is neither relevant to a location of a control channel candidate nor to a number of control channel units occupied by the control channel candidate.

11. The network device according to claim 3 , wherein the processor is further configured to:

generate a sequence of the reference signal according to at least one of the followings:

an index of a resource block in a control region, a RNTI of a terminal device, a beam number or a virtual identifier.

12. The network device according to claim 3 , wherein the processor is further configured to control the communication interface to transmit reference signal configuration information, wherein the reference signal configuration information comprises time-frequency resource location information of the reference signal.

13. The network device according to claim 12 , wherein the reference signal configuration information further comprises sequence information of the reference signal.

14. A terminal device, comprising a processor and a memory having executable instructions stored thereon that when executed by the processor cause the processor to:

determine a time-frequency resource for a reference signal required by a control channel, wherein the time-frequency resource for the reference signal comprises multiple sets of resource groups, and the resource group comprises two resource elements (RE) that are consecutive in a frequency domain; and

control a communication interface to receive the reference signal via time-frequency resource for the reference signal;

wherein the processor is further configured to demodulate the control channel according to the reference signal;

wherein for a plurality of terminal devices comprising the terminal device, the time-frequency resource for the reference signal is mapped, along with a configured control channel resource unit where the time-frequency resource for the reference signal is located, in a first control region within a system bandwidth in a manner of first a frequency domain and then a time domain;

wherein when different terminal devices comprising the terminal device receive the reference signal transmitted by adjacent beams, for the adjacent beams, there is a shift between locations of the time-frequency resource for the reference signal.

15. The terminal device according to claim 14 , wherein the processor is further configured to control the communication interface to receive reference signal configuration information transmitted by a network device, wherein the reference signal configuration information comprises time-frequency resource location information of the reference signal;

the processor is configured to determine the time-frequency resource for the reference signal according to the reference signal configuration information.