Signal transmission method and device

1. A signal communication method, the method comprising:

receiving and measuring a cell-specific first Positioning Reference Signal, PRS, in a cell public measurement window to obtain a first positioning measurement value, and applying for a UE-specific second PRS resource in a non-cell public measurement window from a network side based on the first positioning measurement value;

receiving and measuring the UE-specific second PRS in the non-cell public measurement window to obtain a second positioning measurement value;

determining and reporting a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value.

2. The method according to claim 1 , wherein a signal bandwidth used to receive and measure the first PRS in the cell public measurement window is the same as or different from a signal bandwidth used to receive and measure the second PRS in the non-cell public measurement window;

a numerology used to receive and measure the first PRS in the cell public measurement window is the same as or different from a numerology used to receive and measure the second PRS in the non-cell public measurement window.

3. The method according to claim 1 , wherein applying for the UE-specific second PRS resource in the non-cell public measurement window from the network side based on the first positioning measurement value, comprises:

comparing the first positioning measurement value with a preset threshold value, and applying for the UE-specific second PRS resource in the non-cell public measurement window from the network side according to a comparison result.

4. The method according to claim 1 , wherein the method further comprises: receiving one or more of following configuration information through broadcast signaling, Radio Resource Control, RRC, signaling, Downlink Control Information, DCI, or dedicated positioning signaling:

configuration information of the cell public measurement window;

configuration information of the non-cell public measurement window;

configuration information of the cell-specific first PRS resource;

configuration information of the UE-specific second PRS resource.

5. The method according to claim 1 , wherein the third positioning measurement value is determined based on the first positioning measurement value and the second positioning measurement value by one of:

linear weighted combination;

selecting a maximum value;

selecting a minimum value.

6. The method according to claim 1 , wherein applying for the UE-specific second PRS resource in the non-cell public measurement window from the network side based on the first positioning measurement value, comprises:

applying for a second PRS resource occupying a larger signal bandwidth and/or more OFDM symbols than a first PRS resource when an error of the first positioning measurement value is greater than a first threshold value, wherein the first PRS resource is the resource configured for the first PRS from the network side;

applying for a second PRS resource occupying a smaller signal bandwidth and/or fewer OFDM symbols than the first PRS resource from the network side when the error of the first positioning measurement value is not greater than the first threshold value.

7. A signal communication method, the method comprising:

sending a cell-specific first Positioning Reference Signal, PRS, in a cell public measurement window;

sending a UE-specific second PRS in a non-cell public measurement window;

receiving a third positioning measurement value determined and reported by a terminal based on a first positioning measurement value and a second positioning measurement value, and using the third positioning measurement value for UE position calculation; wherein the first positioning measurement value is obtained by the terminal receiving and measuring the cell-specific first PRS in the cell public measurement window, the second positioning measurement value is obtained by the terminal receiving and measuring the UE-specific second PRS in the non-cell public measurement window.

8. The method according to claim 7 , wherein a signal bandwidth used to transmit the first PRS in the cell public measurement window is the same as or different from a signal bandwidth used to transmit the second PRS in the non-cell public measurement window;

a numerology used to transmit the first PRS in the cell public measurement window is the same as or different from a numerology used to transmit the second PRS in the non-cell public measurement window.

9. The method according to claim 7 , wherein the method further comprises: notifying the terminal of one or more of following configuration information through broadcast signaling, Radio Resource Control, RRC, signaling, Downlink Control Information, DCI, or dedicated positioning signaling:

configuration information of the cell public measurement window;

configuration information of the non-cell public measurement window;

configuration information of the cell-specific first PRS resource;

configuration information of the UE-specific second PRS resource;

wherein the configuration information of the UE-specific second PRS resource is determined based on an application of the UE-specific second PRS resource in the non-cell public measurement window sent by the terminal to a network side based on the first positioning measurement value when receiving the application.

10. The method according to claim 9 , wherein the method further comprises:

determining a relationship among N*M activated BandWidth Parts, BWPs, of N target UEs that need to be positioned in M different cells, wherein N is greater than or equal to 1, and M is greater than or equal to 3;

configuring PRS resources respectively on the N*M activated BWPs in the M different cells for the N target UEs in case of complete orthogonality in frequency domain, wherein the N target UEs are multiplexed by Frequency Division Multiplexing, FDM, or by the FDM combined with Time Division Multiplexing, TDM, in the M different cells;

multiplexing PRSs of different target UEs by the TDM and then multiplexing PRSs of a same target UE in different cells by the FDM or by the FDM combined with the TDM in case of incomplete orthogonality in frequency domain; or multiplexing PRSs of different target UEs with different numerologies in different cells by the TDM and then multiplexing PRSs of different target UEs with a same numerology in different cells by the FDM or by the FDM combined with the TDM in case of incomplete orthogonality in frequency domain.

11. A signal communication apparatus, the apparatus comprising:

a memory configured to store program instructions;

a processor configured to invoke the program instructions stored in the memory, and perform operations according to claim 7 .

12. The apparatus according to claim 11 , wherein a signal bandwidth used to transmit the first PRS in the cell public measurement window is the same as or different from a signal bandwidth used to transmit the second PRS in the non-cell public measurement window;

a numerology used to transmit the first PRS in the cell public measurement window is the same as or different from a numerology used to transmit the second PRS in the non-cell public measurement window.

13. The apparatus according to claim 11 , wherein the processor is further configured to: notify the terminal of one or more of following configuration information through broadcast signaling, Radio Resource Control, RRC, signaling, Downlink Control Information, DCI, or dedicated positioning signaling:

configuration information of the cell public measurement window;

configuration information of the non-cell public measurement window;

configuration information of the cell-specific first PRS resource;

configuration information of the UE-specific second PRS resource;

wherein the configuration information of the UE-specific second PRS resource is determined based on an application of the UE-specific second PRS resource in the non-cell public measurement window sent by the terminal to a network side based on the first positioning measurement value when receiving the application.

14. The apparatus according to claim 13 , wherein the processor is further configured to:

determine a relationship among N*M activated BandWidth Parts, BWPs, of N target UEs that need to be positioned in M different cells, wherein N is greater than or equal to 1, and M is greater than or equal to 3;

configure PRS resources respectively on the N*M activated BWPs in the M different cells for the N target UEs in case of complete orthogonality in frequency domain, wherein the N target UEs are multiplexed by Frequency Division Multiplexing, FDM, or by the FDM combined with Time Division Multiplexing, TDM, in the M different cells;

multiplex PRSs of different target UEs by the TDM and then multiplex PRSs of a same target UE in different cells by the FDM or by the FDM combined with the TDM in case of incomplete orthogonality in frequency domain; or multiplex PRSs of different target UEs with different numerologies in different cells by the TDM and then multiplex PRSs of different target UEs with a same numerology in different cells by the FDM or by the FDM combined with the TDM in case of incomplete orthogonality in frequency domain.

15. A signal communication apparatus, the apparatus comprising:

a memory configured to store program instructions;

a processor configured to invoke the program instructions stored in the memory, and perform according to an obtained program:

receiving and measuring a cell-specific first Positioning Reference Signal, PRS, in a cell public measurement window to obtain a first positioning measurement value, and applying for a UE-specific second PRS resource in a non-cell public measurement window from a network side based on the first positioning measurement value;

receiving and measuring the UE-specific second PRS in the non-cell public measurement window to obtain a second positioning measurement value;

determining and reporting a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value.

16. The apparatus according to claim 15 , wherein a signal bandwidth used to receive and measure the first PRS in the cell public measurement window is the same as or different from a signal bandwidth used to receive and measure the second PRS in the non-cell public measurement window;

a numerology used to receive and measure the first PRS in the cell public measurement window is the same as or different from a numerology used to receive and measure the second PRS in the non-cell public measurement window.

17. The apparatus according to claim 15 , wherein applying for the UE-specific second PRS resource in the non-cell public measurement window from the network side based on the first positioning measurement value, comprises:

comparing the first positioning measurement value with a preset threshold value, and applying for the UE-specific second PRS resource in the non-cell public measurement window from the network side according to a comparison result.

18. The apparatus according to claim 15 , wherein the processor is further configured to: receive one or more of following configuration information through broadcast signaling, Radio Resource Control, RRC, signaling, Downlink Control Information, DCI, or dedicated positioning signaling:

configuration information of the cell public measurement window;

configuration information of the non-cell public measurement window;

configuration information of the cell-specific first PRS resource;

configuration information of the UE-specific second PRS resource.

19. The apparatus according to claim 15 , wherein the third positioning measurement value is determined based on the first positioning measurement value and the second positioning measurement value by one of:

linear weighted combination;

selecting a maximum value;

selecting a minimum value.

20. The apparatus according to claim 15 , wherein the processor applying for the UE-specific second PRS resource in the non-cell public measurement window from the network side based on the first positioning measurement value, comprises:

applying for a second PRS resource occupying a larger signal bandwidth and/or more OFDM symbols than a first PRS resource when an error of the first positioning measurement value is greater than a first threshold value, wherein the first PRS resource is the resource configured for the first PRS from the network side;

applying for a second PRS resource occupying a smaller signal bandwidth and/or fewer OFDM symbols than the first PRS resource from the network side when the error of the first positioning measurement value is not greater than the first threshold value.