Communication method and apparatus

Abstract

Provided in the present application are a communication method and apparatus. The method comprises: a first communication apparatus receiving a first signal from a second communication apparatus, wherein the first signal is used for indicating that the second communication apparatus occupies a first time-frequency resource; the first communication apparatus sending first information to a third communication apparatus, wherein the first information is used for indicating a measurement result for the first signal; the first communication apparatus receiving second information from the third communication apparatus, wherein the second information is used for scheduling a second time-frequency resource, and the first time-frequency resource may comprise the second time-frequency resource; and the first communication apparatus communicating with the third communication apparatus on the basis of the second time-frequency resource. In the present application, a first communication apparatus measures a first signal and reports a measurement result of the first signal, such that a third communication apparatus determines the occupation situation of a first time-frequency resource on the basis of the measurement result of the first signal, and schedules the first time-frequency resource, thereby improving the resource utilization efficiency, and avoiding communication interference.

Description

Communication method and apparatus

[0001] The present application claims priority from the Chinese patent application No. 202411118871.3 filed on August 14, 2024, and entitled "Communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of wireless communication, in particular to a communication method and apparatus. BACKGROUND

[0003] In the current communication system, the problem of non-terrestrial network (NTN) and terrestrial network (TN) adjacent channel coexistence is discussed. In the scenario of adjacent channel coexistence, NTN and TN use non-overlapping but adjacent frequency spectrum for communication. Non-overlapping frequency spectrum can reduce the interference between systems. However, there is a situation that the frequency spectrum is not fully utilized. For example, there can be a period when the frequency spectrum occupied by NTN is not used for NTN communication, and then the frequency spectrum occupied by NTN in this period can be considered as idle.

[0004] In order to improve the utilization rate of frequency spectrum, satellite-ground spectrum sharing has become a possible implementation way. In the scenario of satellite-ground spectrum sharing, NTN and TN can use the same time-frequency resource. However, how to manage the resource and interference in the scenario of satellite-ground spectrum sharing is still inconclusive. SUMMARY

[0005] The present application provides a communication method and apparatus. A first communication device measures a first signal indicating that a second communication device occupies a first time-frequency resource. The measurement result of the first signal is reported to a third communication device. The third communication device performs resource scheduling based on the measurement result of the first signal. Thereby, the resource utilization efficiency is improved, and the communication between the first communication device and the third communication device, and the communication between the second communication device and other communication devices do not interfere with each other.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, a communication method is provided. The method can be applied to a first communication device, which can be a terminal, a component (e.g., a processor, a circuit, a chip, or a chip system) of a terminal, or a logic module or software that can implement all or part of the functions of a terminal. For ease of description, the method is described below by taking a terminal as an example. The method can include: receiving a first signal from a second communication device. The first signal is used to indicate that the second communication device occupies a first time-frequency resource. Sending first information to a third communication device. The first information is used to indicate a measurement result of the first signal. Receiving second information from the third communication device. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. The first communication device communicates with the third communication device based on the second time-frequency resource.

[0008] In the present application, the first communication device measures the first signal and reports the measurement result of the first signal to the third communication device. The third communication device determines the occupation of the first time-frequency resource by the second communication device based on the measurement result of the first signal, and then performs corresponding resource scheduling. This improves the resource utilization efficiency and avoids mutual interference between the communication between the first communication device and the third communication device and the communication between the second communication device and other communication devices.

[0009] In a possible design, the method can further include: receiving third information from the third communication device. The third information is used to indicate a first threshold. For example, the measurement result of the first signal can include: the power of the first signal is greater than the first threshold; or, the power of the first signal is equal to the first threshold; or, the power of the first signal is less than the first threshold.

[0010] The present application provides possible cases of the measurement result of the first signal, so that the third communication device can determine whether to schedule corresponding time-frequency resources according to different measurement results, to avoid communication interference.

[0011] In a possible design, the third information is further used to indicate a third time-frequency resource. The third time-frequency resource is the time-frequency resource of the first signal.

[0012] In the present application, the third communication device indicates the third time-frequency resource, so that the first communication device can accurately measure the first signal. This improves the accuracy of the measurement result of the first signal, and further improves the accuracy of the third communication device in scheduling corresponding time-frequency resources, to better avoid the generation of communication interference.

[0013] In a possible design, the third communication apparatus is a non-ground network communication apparatus. The time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol. Alternatively, the second threshold is related to at least one of the following: location information of the third communication apparatus; location information of the first communication apparatus; or coverage of the third communication apparatus.

[0014] The application provides various manners of determining the time domain interval between the first time-frequency resource and the third time-frequency resource, so as to determine a more reasonable time domain interval between the first time-frequency resource and the third time-frequency resource in different scenarios.

[0015] In a possible design, the first time-frequency resource is associated with the first communication apparatus, and / or the first time-frequency resource is associated with a fourth communication apparatus. The fourth communication apparatus is located in a coverage of a first beam. The first beam is a beam used by the second communication apparatus to send the first signal. The fourth communication apparatus can communicate with the second communication apparatus through the first time-frequency resource.

[0016] The application ensures that the first time-frequency resource scheduled based on the measurement result of the first signal is not interfered, thereby ensuring the service performance of the third communication apparatus.

[0017] In a possible design, a distance between the first communication apparatus and the fourth communication apparatus is less than or equal to a third threshold. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource. The first communication apparatus is located in a coverage of a first beam. The fourth communication apparatus communicates with the second communication apparatus through a second beam. The second beam and the first beam have an overlapping coverage, or the second beam is the same as the first beam.

[0018] The application ensures that the first communication apparatus can accurately perceive whether the first time-frequency resource will be used by the second communication apparatus. If the first time-frequency resource is occupied, the third communication apparatus does not schedule the first time-frequency resource; if the first time-frequency resource is idle, the third communication apparatus can schedule the first time-frequency resource to the first communication apparatus. The flexibility of scheduling the first time-frequency resource is improved.

[0019] In a second aspect, a communication method is provided. The method can be applied to a third communication device, which can be a non-terrestrial network communication device, a component (e.g., a processor, a circuit, a chip, or a chip system) of a non-terrestrial network communication device, or a logic module or software that can implement all or part of the functions of a non-terrestrial network communication device. For ease of description, the method is described below by taking a non-terrestrial network communication device as an example. The method can include: receiving first information from a first communication device. The first information is used to indicate a measurement result of a first signal. The first signal is used to indicate that a second communication device occupies a first time-frequency resource. According to the measurement result of the first signal, second information is sent to the first communication device. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. Communication is performed with the first communication device based on the second time-frequency resource.

[0020] In a possible design, the method can further include: sending third information to the first communication device. The third information is used to indicate a first threshold. The measurement result of the first signal can include: a power of the first signal is greater than the first threshold; or, the power of the first signal is equal to the first threshold; or, the power of the first signal is less than the first threshold.

[0021] In a possible design, the third information is further used to indicate a third time-frequency resource. The third time-frequency resource is a time-frequency resource of the first signal.

[0022] In a possible design, the third communication device is a non-terrestrial network communication device. A time-domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol, or the second threshold is related to at least one of the following information: location information of the third communication device; location information of the first communication device; or, a coverage range of the third communication device.

[0023] In a possible design, the method can further include: sending fourth information to the second communication device, or receiving the fourth information from the second communication device. The fourth information is used to indicate at least one of the following parameters: a first time-domain resource. The first time-frequency resource includes the first time-domain resource. A time-domain interval between the first time-frequency resource and a third time-frequency resource. The third time-frequency resource is a time-frequency resource of the first signal. A time-domain location of the first signal.

[0024] The present application provides a plurality of possible fourth information, so that the second communication device and the third communication device can synchronize the fourth information to accurately indicate whether the first time-frequency resource is occupied by the second communication device based on the first signal, thereby avoiding signal interference caused by communication between the first communication device and the third communication device based on the first time-frequency resource.

[0025] In a possible design, the method further includes: sending fifth information to the second communication device; or, receiving fifth information from the first communication device or the second communication device, where the fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication device.

[0026] The embodiments of the present application can also indicate different policy types, so as to adopt a manner corresponding to a suitable policy type to schedule the first time-frequency resource and measure the first signal in different scenarios, and improve communication efficiency.

[0027] In a possible design, the sensing policy type includes the first policy type. The first time-frequency resource has an association relationship with the first communication device, and / or, the first time-frequency resource has an association relationship with a fourth communication device. The fourth communication device is located in a coverage range of a first beam, where the first beam is a beam used by the second communication device to send the first signal. The fourth communication device communicates with the second communication device through the first time-frequency resource.

[0028] In a possible design, the sensing policy type includes the second policy type. A distance between the first communication device and the fourth communication device is less than or equal to a third threshold. The fourth communication device communicates with the second communication device through the first time-frequency resource. The first communication device is located in a coverage range of the first beam. The fourth communication device communicates through a second beam used by the second communication device to communicate. The second beam and the first beam have an overlap in coverage range, or the second beam and the first beam are the same beam.

[0029] In a third aspect, a communication method is provided. The method is applied to a second communication device, which can be an access network device, a component (for example, a processor, a circuit, a chip, or a chip system) of the access network device, or a logic module or software that can implement all or part of the functions of the access network device. For ease of description, the method is described below by taking an example of being executed by the access network device. The method can include: receiving fourth information from a third communication device; or, sending the fourth information to the third communication device, where the fourth information is used to indicate at least one of the following parameters: a first time domain resource. The first time-frequency resource can include the first time domain resource. A time domain interval between the first time-frequency resource and a third time-frequency resource, where the third time-frequency resource is a time-frequency resource of the first signal. Or, a time domain position of the first signal. The first signal is sent based on the fourth information, where the first signal is used to indicate that the second communication device occupies the first time-frequency resource.

[0030] In a possible design, the third communication apparatus is a non-ground network communication apparatus. A time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The third time-frequency resource is a time-frequency resource of the first signal. The second threshold is predefined by a protocol, or the second threshold is related to at least one of the following: location information of the third communication apparatus; location information of the first communication apparatus; or coverage of the third communication apparatus.

[0031] In a possible design, the method further includes: receiving fifth information from the third communication apparatus, or sending the fifth information to the third communication apparatus. The fifth information is used to indicate a policy type. The policy type includes a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication apparatus.

[0032] In a possible design, the sensing policy type includes the first policy type. The first time-frequency resource is associated with the first communication apparatus, and / or the first time-frequency resource is associated with a fourth communication apparatus. The fourth communication apparatus is located in a coverage of a first beam. The first beam is a beam used by the second communication apparatus to send the first signal. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource.

[0033] In a possible design, the sensing policy type includes the second policy type. A distance between the first communication apparatus and a fourth communication apparatus is less than or equal to a third threshold. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource. The first communication apparatus is located in a coverage of a first beam. The fourth communication apparatus communicates through a second beam used by the second communication apparatus to communicate. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0034] In a possible design, the method further includes: sending downlink control information (DCI). The DCI is used to schedule the third time-frequency resource.

[0035] The application can schedule a physical downlink shared channel (PDSCH) including multiple sub-blocks through one DCI, so that the fourth communication apparatus performs channel estimation for different sub-blocks, and the stability of the communication system is improved.

[0036] In a possible design, the DCI can also be used to schedule a fourth time-frequency resource. The fourth time-frequency resource adopts a different precoding codebook from the precoding codebook adopted by the third time-frequency resource. The fourth time-frequency resource is a time-frequency resource used for communication between the fourth communication apparatus and the second communication apparatus.

[0037] The application can schedule different PDSCHs through different DCIs, so that the fourth communication apparatus performs channel estimation for different PDSCHs respectively, and the stability of the communication system is improved.

[0038] In a fourth aspect, a communication apparatus is provided, which can be deployed with a first communication apparatus, such as a terminal, or a communication module in the terminal, or a chip responsible for communication functions in the terminal, such as a modem chip (also known as a baseband chip), or a system on chip (SoC) or a system in package (SIP) chip containing a modem module, or a logic module or software capable of implementing all or part of the functions of the terminal. For ease of description, the following is described by way of example of being executed by a terminal. The communication apparatus includes: a transceiver, configured to receive a first signal from a second communication apparatus. The first signal is used to indicate that the second communication apparatus occupies a first time-frequency resource. The transceiver is further configured to send first information to a third communication apparatus. The first information is used to indicate a measurement result of the first signal. The transceiver is further configured to receive second information from the third communication apparatus. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. A processing unit is configured to control the transceiver to communicate with the third communication apparatus based on the second time-frequency resource.

[0039] In a possible design, the transceiver is further configured to receive third information from the third communication apparatus. The third information is used to indicate a first threshold. For example, the measurement result of the first signal can include: the power of the first signal is greater than the first threshold; or, the power of the first signal is equal to the first threshold; or, the power of the first signal is less than the first threshold.

[0040] In a possible design, the third information is further used to indicate a third time-frequency resource. The third time-frequency resource is a time-frequency resource of the first signal.

[0041] In a possible design, the third communication apparatus is a non-terrestrial network communication apparatus. A time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol. Alternatively, the second threshold is related to at least one of the following information: location information of the third communication apparatus; location information of the first communication apparatus; or, coverage range of the third communication apparatus.

[0042] In a possible design, the first time-frequency resource is associated with the first communication device; and / or, the first time-frequency resource is associated with a fourth communication device. The fourth communication device is located in a coverage of the first beam. The first beam is a beam used by the second communication device to send the first signal. The fourth communication device can communicate with the second communication device through the first time-frequency resource.

[0043] In a possible design, a distance between the first communication device and the fourth communication device is less than or equal to a third threshold. The fourth communication device communicates with the second communication device through the first time-frequency resource. The first communication device is located in a coverage of the first beam. The fourth communication device communicates through a second beam used by the second communication device to communicate. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0044] In a fifth aspect, a communication device is provided. The communication device can be deployed with a third communication device, such as a non-terrestrial network communication device, or a communication module in the non-terrestrial network communication device, or a chip responsible for communication functions in the non-terrestrial network communication device, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software that can implement all or part of the functions of the non-terrestrial network communication device. For ease of description, the following is described by way of example of being executed by a non-terrestrial network communication device. The communication device includes: a transceiver configured to receive first information from a first communication device. The first information is used to indicate a measurement result of a first signal. The first signal is used to indicate that a second communication device occupies a first time-frequency resource. A processing unit is configured to control the transceiver to send second information to the first communication device according to the measurement result of the first signal. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. The processing unit is further configured to control the transceiver to communicate with the first communication device based on the second time-frequency resource.

[0045] In a possible design, the transceiver is further configured to send third information to the first communication device. The third information is used to indicate a first threshold. The measurement result of the first signal can include: a power of the first signal is greater than the first threshold; or, the power of the first signal is equal to the first threshold; or, the power of the first signal is less than the first threshold.

[0046] In a possible design, the third information is further used to indicate a third time-frequency resource. The third time-frequency resource is a time-frequency resource of the first signal.

[0047] In a possible design, the third communication apparatus is a non-ground network communication apparatus. A time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol, or the second threshold is related to at least one of the following: location information of the third communication apparatus; location information of the first communication apparatus; or coverage of the third communication apparatus.

[0048] In a possible design, the transceiver is further configured to: send, to the second communication apparatus, fourth information; or receive, from the second communication apparatus, the fourth information. The fourth information is used to indicate at least one of the following: the first time domain resource; the first time-frequency resource; a time domain interval between the first time-frequency resource and a third time-frequency resource; or a time domain position of the first signal. The third time-frequency resource is a time-frequency resource of the first signal.

[0049] In a possible design, the transceiver is further configured to: send, to the second communication apparatus, fifth information; or receive, from the first communication apparatus or the second communication apparatus, the fifth information. The fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication apparatus.

[0050] In a possible design, the awareness policy type includes the first policy type. The first time-frequency resource is associated with the first communication apparatus, and / or the first time-frequency resource is associated with a fourth communication apparatus. The fourth communication apparatus is located in a coverage of a first beam. The first beam is a beam used by the second communication apparatus to send the first signal. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource.

[0051] In a possible design, the awareness policy type includes the second policy type. A distance between the first communication apparatus and a fourth communication apparatus is less than or equal to a third threshold. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource. The first communication apparatus is located in a coverage of a first beam. The fourth communication apparatus communicates with the second communication apparatus through a second beam. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0052] In a sixth aspect, a communication apparatus is provided, which can be deployed with a second communication apparatus, such as an access network device, or a communication module in the access network device, or a chip responsible for communication functions in the access network device, such as a modem chip (also known as a baseband chip), or a SoC or SIP chip containing a modem module. It can also be a logic module or software that can implement all or part of the functions of the access network device. For ease of description, the following is described by way of example of being executed by an access network device. It includes: a transceiver configured to receive fourth information from a third communication apparatus. Or, transmit the fourth information to the third communication apparatus. The fourth information is used to indicate at least one of the following parameters: a first time domain resource. The first time-frequency resource can include the first time domain resource. A time domain interval between the first time-frequency resource and a third time-frequency resource. The third time-frequency resource is the time-frequency resource of the first signal. Or, a time domain position of the first signal. A processing unit configured to control the transceiver to transmit a first signal based on the fourth information. The first signal is used to indicate that the second communication apparatus occupies the first time-frequency resource.

[0053] In a possible design, the third communication apparatus is a non-terrestrial network communication apparatus. The time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The third time-frequency resource is the time-frequency resource of the first signal. The second threshold is predefined by a protocol, or the second threshold is related to at least one of the following information: location information of the third communication apparatus; location information of the first communication apparatus; or, coverage range of the third communication apparatus.

[0054] In a possible design, the transceiver is further configured to: receive fifth information from the third communication apparatus. Or, transmit the fifth information to the third communication apparatus. The fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication apparatus.

[0055] In a possible design, the awareness policy type includes the first policy type. The first time-frequency resource has an association relationship with the first communication apparatus; and / or, the first time-frequency resource has an association relationship with a fourth communication apparatus. The fourth communication apparatus is located within a coverage range of a first beam. The first beam is a beam used by the second communication apparatus to transmit the first signal. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource.

[0056] In a possible design, the sensing strategy type includes a second strategy type. The distance between the first communication device and the fourth communication device is less than or equal to a third threshold value. The fourth communication device communicates with the second communication device through the first time-frequency resource. The first communication device is located in the coverage of the first beam. The fourth communication device communicates through a second beam used by the second communication device to communicate. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0057] In a possible design, the transceiver is further configured to: transmit the DCI. The DCI is used to schedule the third time-frequency resource.

[0058] In a possible design, the DCI can also be used to schedule a fourth time-frequency resource. The precoding codebook used by the fourth time-frequency resource is different from the precoding codebook used by the third time-frequency resource. The fourth time-frequency resource is a time-frequency resource used by the fourth communication device to communicate with the second communication device.

[0059] In a seventh aspect, a communication device is provided. The communication device can be deployed in a first communication device, such as a terminal, or a communication module in the terminal, or a chip responsible for communication functions in the terminal, such as a modem chip (also known as a baseband chip), or a system on chip (SoC) or a system in package (SIP) chip containing a modem module. It can also be a logic module or software that can implement all or part of the terminal functions. For ease of description, the following is described by way of example of being executed by a terminal. The communication device includes: a transceiver configured to receive a first signal from a second communication device. The first signal is used to indicate that the second communication device occupies a first time-frequency resource. The transceiver is further configured to transmit first information to a third communication device. The first information is used to indicate a measurement result of the first signal. The transceiver is further configured to receive second information from the third communication device. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. A processor configured to control the transceiver to communicate with the third communication device based on the second time-frequency resource.

[0060] In a possible design, the transceiver is further configured to: receive third information from the third communication device. The third information is used to indicate a first threshold value. For example, the measurement result of the first signal can include: the power of the first signal is greater than the first threshold value; or, the power of the first signal is equal to the first threshold value; or, the power of the first signal is less than the first threshold value.

[0061] In a possible design, the third information is further used to indicate a third time-frequency resource. The third time-frequency resource is a time-frequency resource of the first signal.

[0062] In a possible design, the third communication device is a non-ground network communication device. A time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol. Alternatively, the second threshold is related to at least one of the following: location information of the third communication device; location information of the first communication device; or coverage of the third communication device.

[0063] In a possible design, the first time-frequency resource is associated with the first communication device, and / or the first time-frequency resource is associated with a fourth communication device. The fourth communication device is located in a coverage of the first beam. The first beam is a beam used by the second communication device to send the first signal. The fourth communication device can communicate with the second communication device through the first time-frequency resource.

[0064] In a possible design, a distance between the first communication device and the fourth communication device is less than or equal to a third threshold. The fourth communication device communicates with the second communication device through the first time-frequency resource. The first communication device is located in a coverage of the first beam. The fourth communication device communicates with the second communication device through a second beam. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0065] In an eighth aspect, a communication device is provided. The communication device can be deployed with a third communication device, such as a non-ground network communication device, a communication module in the non-ground network communication device, a chip responsible for communication functions in the non-ground network communication device, such as a modem chip (also referred to as a baseband chip), or a SoC or SIP chip containing a modem module. It can also be a logic module or software that can implement all or part of the functions of the non-ground network communication device. For ease of description, the following is described by way of example of being executed by the non-ground network communication device. The communication device includes: a transceiver configured to receive first information from a first communication device. The first information is used to indicate a measurement result of a first signal. The first signal is used to indicate that a second communication device occupies a first time-frequency resource. A processor configured to control the transceiver to send second information to the first communication device according to the measurement result of the first signal. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. The processor is further configured to control the transceiver to communicate with the first communication device based on the second time-frequency resource.

[0066] In a possible design, the transceiver is further configured to send third information to the first communication device. The third information is used to indicate a first threshold. The measurement result of the first signal can include: the power of the first signal is greater than the first threshold; or the power of the first signal is equal to the first threshold; or the power of the first signal is less than the first threshold.

[0067] In a possible design, the third information is further used to indicate the third time-frequency resource. The third time-frequency resource is the time-frequency resource of the first signal.

[0068] In a possible design, the third communication apparatus is a non-terrestrial network communication apparatus. A time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol, or the second threshold is related to at least one of the following: location information of the third communication apparatus; location information of the first communication apparatus; or, coverage of the third communication apparatus.

[0069] In a possible design, the transceiver is further configured to: send, to the second communication apparatus, fourth information; or receive, from the second communication apparatus, the fourth information. The fourth information is used to indicate at least one of the following: the first time domain resource; the first time-frequency resource; the time domain interval between the first time-frequency resource and the third time-frequency resource; or the time domain position of the first signal.

[0070] In a possible design, the transceiver is further configured to: send, to the second communication apparatus, fifth information; or receive, from the first communication apparatus or the second communication apparatus, the fifth information. The fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication apparatus.

[0071] In a possible design, the awareness policy type includes the first policy type. The first time-frequency resource has an association relationship with the first communication apparatus, and / or the first time-frequency resource has an association relationship with a fourth communication apparatus. The fourth communication apparatus is located in a coverage of a first beam. The first beam is a beam used by the second communication apparatus to send the first signal. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource.

[0072] In a possible design, the awareness policy type includes the second policy type. A distance between the first communication apparatus and a fourth communication apparatus is less than or equal to a third threshold. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource. And / or, the first communication apparatus is located in a coverage of a first beam. The fourth communication apparatus communicates through a second beam used by the second communication apparatus to communicate. The second beam has an overlap with the coverage of the first beam, or the second beam is the same as the first beam.

[0073] In a ninth aspect, a communication apparatus is provided, which can be deployed with a second communication apparatus, such as an access network device, or a communication module in the access network device, or a chip responsible for communication functions in the access network device, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module. It can also be a logic module or software capable of implementing all or part of the functions of the access network device. For ease of description, the following is described by way of example of being executed by an access network device. It includes: a transceiver configured to receive fourth information from a third communication apparatus. Or, transmit fourth information to the third communication apparatus. Wherein the fourth information is used to indicate at least one of the following parameters: a first time domain resource. The first time-frequency resource can include the first time domain resource. A time domain interval between the first time-frequency resource and a third time-frequency resource. Wherein the third time-frequency resource is the time-frequency resource of the first signal. Or, a time domain position of the first signal. A processor configured to control the transceiver to transmit a first signal based on the fourth information. The first signal is used to indicate that the second communication apparatus occupies the first time-frequency resource.

[0074] In a possible design, the third communication apparatus is a non-terrestrial network communication apparatus. The time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. Wherein the third time-frequency resource is the time-frequency resource of the first signal. The second threshold is predefined by a protocol, or the second threshold is related to at least one of the following information: location information of the third communication apparatus; location information of the first communication apparatus; or, coverage range of the third communication apparatus.

[0075] In a possible design, the transceiver is further configured to: receive fifth information from the third communication apparatus. Or, transmit fifth information to the third communication apparatus. Wherein the fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication apparatus.

[0076] In a possible design, the awareness policy type includes the first policy type. The first time-frequency resource has an association relationship with the first communication apparatus; and / or, the first time-frequency resource has an association relationship with a fourth communication apparatus. Wherein the fourth communication apparatus is located within the coverage range of the first beam. The first beam is a beam used by the second communication apparatus to transmit the first signal. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource.

[0077] In a possible design, the sensing strategy type includes a second strategy type. The distance between the first communication device and the fourth communication device is less than or equal to a third threshold. The fourth communication device communicates with the second communication device via the first time-frequency resource. The first communication device is located in the coverage of the first beam. The fourth communication device communicates via a second beam used by the second communication device to communicate with the second communication device. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0078] In a possible design, the transceiver is further configured to: transmit the DCI. The DCI is used to schedule the third time-frequency resource.

[0079] In a possible design, the DCI can be further used to schedule a fourth time-frequency resource. The fourth time-frequency resource uses a precoding codebook different from that used by the third time-frequency resource. The fourth time-frequency resource is used by the fourth communication device to communicate with the second communication device.

[0080] In a tenth aspect, a communication system is provided, including a first communication device, a second communication device, and a third communication device. The system includes: the third communication device sending fourth information to the second communication device. Accordingly, the second communication device receives the fourth information from the third communication device. Or, the second communication device sends the fourth information to the third communication device. Accordingly, the third communication device receives the fourth information from the second communication device. The fourth information is used to indicate at least one of the following parameters: a first time-domain resource. The first time-frequency resource includes the first time-domain resource. A time-domain interval between the first time-frequency resource and a third time-frequency resource. The third time-frequency resource is a time-frequency resource of a first signal. A time-domain position of the first signal. The second communication device controls sending of the first signal based on the fourth information. Accordingly, the first communication device receives the first signal from the second communication device. The first signal is used to indicate that the second communication device occupies the first time-frequency resource. The first communication device sends first information to the third communication device. Accordingly, the third communication device receives the first information from the first communication device. The first information is used to indicate a measurement result of the first signal. The third communication device sends second information to the first communication device according to the measurement result of the first signal. Accordingly, the first communication device receives the second information from the third communication device. The second information is used to schedule a second time-frequency resource. The first time-frequency resource can include the second time-frequency resource. The first communication device and the third communication device control communication based on the second time-frequency resource.

[0081] In a possible design, the system further includes: the third communication apparatus sends third information to the first communication apparatus. Accordingly, the first communication apparatus receives the third information from the third communication apparatus. The third information is used to indicate the first threshold. For example, the measurement result of the first signal can include: the power of the first signal is greater than the first threshold; or, the power of the first signal is equal to the first threshold; or, the power of the first signal is less than the first threshold.

[0082] In a possible design, the third information is further used to indicate a third time-frequency resource. The third time-frequency resource is the time-frequency resource of the first signal.

[0083] In a possible design, the third communication apparatus is a non-terrestrial network communication apparatus. The time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold. The second threshold is predefined by a protocol. Alternatively, the second threshold is related to at least one of the following: location information of the third communication apparatus; location information of the first communication apparatus; or, coverage of the third communication apparatus.

[0084] In a possible design, the system further includes: the third communication apparatus sends fifth information to the second communication apparatus. Accordingly, the second communication apparatus receives the fifth information from the third communication apparatus. Alternatively, the second communication apparatus sends the fifth information to the third communication apparatus. Accordingly, the third communication apparatus receives the fifth information from the first communication apparatus or the second communication apparatus. The fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication apparatus.

[0085] In a possible design, the sensing policy type includes the first policy type. The first time-frequency resource has an association relationship with the first communication apparatus, and / or, the first time-frequency resource has an association relationship with a fourth communication apparatus. The fourth communication apparatus is located in the coverage of a first beam. The first beam is a beam used by the second communication apparatus to send the first signal. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource.

[0086] In a possible design, the sensing policy type includes the second policy type. The distance between the first communication apparatus and a fourth communication apparatus is less than or equal to a third threshold. The fourth communication apparatus communicates with the second communication apparatus through the first time-frequency resource. And / or, the first communication apparatus is located in the coverage of a first beam. The fourth communication apparatus communicates through a second beam used by the second communication apparatus to communicate. The second beam overlaps with the coverage of the first beam, or the second beam is the same as the first beam.

[0087] In a possible design, the system further includes: the second communication apparatus sends DCI. The DCI is used to schedule the third time-frequency resource.

[0088] In a possible design, the DCI can also be used to schedule a fourth time-frequency resource. The fourth time-frequency resource adopts a precoding codebook different from the precoding codebook adopted by the third time-frequency resource. The fourth time-frequency resource is a time-frequency resource used for communication between the fourth communication apparatus and the second communication apparatus.

[0089] In an eleventh aspect, a chip is provided. The chip includes an interface circuit and one or more processors. The one or more processors are coupled with a memory. The memory is configured to store part or all of a computer program or instructions necessary for implementing the functions of the above-described first aspect, the second aspect, and the third aspect. The one or more processors can execute the computer program or instructions, and when the computer program or instructions are executed, cause the communication apparatus to implement the method in any possible design or implementation manner of the above-described first aspect, the second aspect, and the third aspect. The interface circuit is configured to implement a communication function within the communication apparatus and / or a communication function of the communication apparatus with other devices or components.

[0090] In a twelfth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions; when the computer instructions are run on a computer, cause the computer to perform the communication method in any design of any aspect described above.

[0091] In a thirteenth aspect, a computer program product is provided. The computer program product includes computer programs or instructions, and when the computer programs or instructions are run on a computer, cause the computer to perform the communication method in any design of any aspect described above.

[0092] The method in any of the above-described second aspect to thirteenth aspect corresponds to the beneficial effects described with respect to the methods in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0093] FIG. 1 is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applied;

[0094] FIG. 2 is a schematic diagram of a communication method provided by an embodiment of the present application;

[0095] FIG. 3 is a schematic diagram of a time-frequency resource distribution relationship provided by an embodiment of the present application;

[0096] FIG. 4 is a timing diagram provided by an embodiment of the present application;

[0097] FIG. 5 is a schematic diagram of a communication scenario provided by an embodiment of the present application;

[0098] FIG. 6 is another timing diagram provided by an embodiment of the present application;

[0099] FIG. 7 is another communication scenario diagram provided by an embodiment of the present application;

[0100] FIG. 8 is yet another communication scenario diagram provided by an embodiment of the present application;

[0101] FIG. 9 is a resource distribution diagram provided by an embodiment of the present application;

[0102] FIG. 10 is another resource distribution diagram provided by an embodiment of the present application;

[0103] FIG. 11 is a communication device diagram provided by an embodiment of the present application;

[0104] FIG. 12 is another communication device diagram provided by an embodiment of the present application. DETAILED DESCRIPTION

[0105] FIG. 1 is an architecture diagram of a communication system 1000 provided by an embodiment of the present application. As shown in FIG. 1, the communication system 1000 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110), and can further include at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1). The terminals 120 are connected to the RAN nodes 110 in a wireless manner. Terminals and terminals, and RAN nodes and RAN nodes can be connected to each other in a wired or wireless manner. The communication system 1000 can further include a core network 200. The RAN nodes 110 are connected to the core network 200 in a wireless or wired manner. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrating the logical functions of the core network devices and the logical functions of the RAN nodes. The communication system 1000 can further include the Internet 300.

[0106] The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a future communication network, and a future wireless access system defined in the 3rd generation partnership project (3GPP). The RAN 100 can also include two or more different wireless access systems described above. The RAN 100 can also be an open RAN (O-RAN).

[0107] The RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is used to help the terminal access the communication system through a wireless manner. In an application scenario, the RAN node can be a base station (BS), an evolved NodeB (eNodeB / eNB), a transmission reception point (TRP), a future base station (generation NodeB, gNB) in a 5th generation (5G) mobile communication system, a future base station in a future communication network, or a base station in a future mobile communication system. The RAN node can be a macro base station (such as 110a in FIG. 1), or a micro base station or an indoor station (such as 110b in FIG. 1), or a relay node, or a master node.

[0108] In another application scenario, wireless access can be realized for a terminal through cooperation of a plurality of RAN nodes, and different RAN nodes realize part of functions of a base station respectively. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). The RU can also be referred to as a radio frequency unit. The CU here completes functions of a radio resource control protocol and a packet data convergence protocol (PDCP) of a base station, and can also complete a function of a service data adaptation protocol (SDAP); the DU completes functions of a radio link control layer and a medium access control (MAC) layer of a base station, and can also complete a function of part of a physical layer or all of a physical layer. For specific descriptions of the above protocol layers, refer to related technical specifications of the 3GPP. The RU can be used to realize functions of transceiving radio frequency signals. The CU and the DU can be two independent RAN nodes, or can be integrated in the same RAN node, for example, integrated in a baseband unit (BBU). The RU can be included in a radio frequency device, for example, included in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes of a CU-control plane and a CU-user plane.

[0109] In different systems, the RAN node can have different names. For example, in an open radio access network (O-RAN) system, the CU can be referred to as an open CU (O-CU), the DU can be referred to as an open DU (O-DU), and the RU can be referred to as an open RU (O-RU). The RAN node in the embodiments of the present application can be realized through a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node can be a server loaded with a corresponding software module. The embodiments of the present application do not limit specific technologies and specific device forms adopted by the RAN node. In order to facilitate description, a base station is described as an example of the RAN node in the following.

[0110] A terminal is a device with wireless transceiving function, which can send signals to a base station or receive signals from a base station. A terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. A terminal can be widely applied to various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IoT), virtual reality, augmented reality, industrial control, automatic driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiving function, wearable device, vehicle, airplane, ship, robot, mechanical arm, smart home device, etc. Embodiments of the present application do not limit specific technologies and specific device forms adopted by a terminal.

[0111] In some examples, the core network 200 can include an access and mobility management function (AMF) entity, a session management function (SMF) entity, a user plane function (UPF) entity, a sensing service control function (SSCF), a sensing data processing function (SDPF), a unified data management (UDM), etc.

[0112] A base station and a terminal can be fixed in position or movable. A base station and a terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on an airplane, balloon and artificial satellite. Embodiments of the present application do not limit application scenarios of a base station and a terminal.

[0113] The roles of the base station and the terminal can be relative. For example, the helicopter or the drone 120i in FIG. 1 can be configured as a mobile base station, and for the terminal 120j that accesses the wireless access network 100 through the 120i, the terminal 120i is a base station; but for the base station 110a, the 120i is a terminal, that is, the 110a and the 120i communicate through a wireless air interface protocol. Of course, the 110a and the 120i can also communicate through a base station-to-base station interface protocol, and in this case, the 120i is also a base station relative to the 110a. Therefore, the base station and the terminal can be collectively referred to as a communication device, and the 110a and the 110b in FIG. 1 can be referred to as a communication device with a base station function, and the 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.

[0114] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed frequency spectrum, or through an unlicensed frequency spectrum, or through both the licensed frequency spectrum and the unlicensed frequency spectrum; can communicate through a frequency spectrum below 6 gigahertz (GHz), or through a frequency spectrum above 6 GHz, or through both the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz. The embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

[0115] In the embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station, or by a control subsystem containing base station functions. The control subsystem containing base station functions here can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal, or by a device containing terminal functions.

[0116] In a wireless communication system, communication devices can communicate with each other through air interface resources. The communication devices can include network devices and terminal devices, and the network devices can also be referred to as base station devices, i.e., the wireless access network devices mentioned above. The air interface resources can include at least one of time domain resources, frequency domain resources, code resources, and space resources. The communication devices can also be referred to as communication devices.

[0117] The scheme provided by the embodiments of the present application can be applied to wireless communication between communication devices. The wireless communication can include wireless communication between network devices and terminals, wireless communication between network devices and network devices, and wireless communication between terminals and terminals. In the embodiments of the present application, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission", or "transmission".

[0118] In some related technologies, such as the design of dynamic channel access in new radio unlicensed (NR-U) technology. NR can be allowed to share the spectrum fairly with other technologies (such as WiFi). This dynamic channel access relies on a listen before talk (LBT) mechanism. There is no communication interaction between different communication systems. For example, the sender evaluates whether the channel is available before sending data. In the case of determining that the channel is available, a random backoff is started. The available channel is used for communication after the completion of the random backoff. The specific LBT process can be referred to related technology implementation, which will not be described here in the embodiments of the present application. For such a dynamic channel access process, the change of channel use can be determined quickly on the time scale of milliseconds (ms).

[0119] However, for the scenario of satellite-terrestrial spectrum sharing, the sensing delay can be large due to the long satellite-terrestrial distance. For the current LBT mechanism, NR is usually scheduled in slots or mini-slots, and the scheduling flexibility is high. Obviously, for the case of large delay, the scheduling information can be outdated, which can cause mutual interference in the process of sharing the spectrum between non-terrestrial networks (NTN) and terrestrial networks (TN). At the same time, due to the long satellite-terrestrial distance, it is more difficult for the satellite to detect the channel use of the ground base station.

[0120] Therefore, the embodiments of the present application provide a communication method, which measures, by a first communication device, a first signal indicating that a second communication device occupies a first time-frequency resource. And reports the measurement result of the first signal to a third communication device. So that the third communication device performs resource scheduling based on the measurement result of the first signal. Thus, the resource utilization efficiency is improved, and the communication between the first communication device and the third communication device, and the communication between the second communication device and other communication devices do not interfere with each other.

[0121] The communication method and device are further described below with reference to the accompanying drawings. It can be understood that the first communication device, the second communication device, and the third communication device are taken as an example of the execution subject of the interaction in the embodiments of the present application, but the present application is not limited to the execution subject of the interaction. For example, the first communication device can be an NTN terminal, the second communication device can be a network device, and the third communication device can be a satellite device; or the first communication device can be a TN terminal, the second communication device can be a satellite device, and the third communication device can be a network device; or the first communication device can be an NTN terminal, the second communication device can be a satellite device, and the third communication device can also be a satellite device, etc. The method executed by the terminal in the embodiments of the present application can also be implemented by a module (such as a circuit, a chip or a chip system, etc.) in the terminal, or a logic node, a logic module or software capable of realizing all or part of the terminal function. The method executed by the network device in the embodiments of the present application can also be implemented by a module (such as a circuit, a chip or a chip system, etc.) in the network device, or a logic node, a logic module or software capable of realizing all or part of the network device function. The method executed by the satellite device in the embodiments of the present application can also be implemented by a module (such as a circuit, a chip or a chip system, etc.) in the satellite device, or a logic node, a logic module or software capable of realizing all or part of the satellite device function.

[0122] In the embodiments of the present application, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission" or "transmission".

[0123] FIG. 2 is a schematic diagram of a network communication protocol function determination method according to an embodiment of the present application.

[0124] The communication process can be applied to, but not limited to, the communication scenario shown in FIG. 1. The method can be applied to LTE, LTE frequency division duplex (FDD) system, LTE TDD, 5G system or NR system, subsequent communication systems (such as future communication systems), V2X, etc., vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc., inter-vehicle communication long term evolution (LTE-V), Internet of Vehicles, MTC, IoT, inter-machine communication long term evolution (LTE-M), machine to machine (M2M), D2D, etc. In the embodiments of the present application, the first communication device can also be considered as a chip in the first communication device, the second communication device can also be considered as a chip in the second communication device, and the third communication device can also be considered as a chip in the third communication device, which is not limited in the embodiments of the present application. The method can include the following steps:

[0125] S101, the third communication device interacts with the second communication device to obtain fourth information. For example, the third communication device sends the fourth information to the second communication device. Correspondingly, the second communication device receives the fourth information from the third communication device. Alternatively, the second communication device sends the fourth information to the third communication device. Correspondingly, the third communication device receives the fourth information from the second communication device.

[0126] For example, the third communication device is a non-terrestrial network communication device, and the second communication device is a terrestrial network communication device. Alternatively, the third communication device is a terrestrial network communication device, and the second communication device is a non-terrestrial network communication device. For example, the terrestrial network communication device can be an access network device or a core network device. The non-terrestrial network communication device can be a satellite device (or satellite equipment, satellite, etc.) or a communication device with satellite function, etc., which is not limited in the embodiments of the present application.

[0127] For example, the fourth information can be semi-static information exchanged between the third communication device and the second communication device.

[0128] In some examples, the fourth information can be used to indicate the first time domain resource. For example, the first time domain resource can be referred to as a channel occupancy time (COT). For another example, the first time domain resource can also be referred to as a resource occupancy time, a signal transmission time, etc., and the name of the first time domain resource is not limited by the embodiments of the present application. Next, the embodiments of the present application will take the COT as an example to illustrate the first time domain resource.

[0129] For example, the unit of the COT can be a symbol, a slot, a subframe, a frame, etc. For another example, the unit of the COT can also be a second (s), a millisecond (ms), a microsecond (μs), etc.

[0130] For example, the first time domain resource can be a time domain resource corresponding to a first time-frequency resource. The first time-frequency resource can be a time-frequency resource used by the second communication device to communicate with other devices, such as a time-frequency resource used by the second communication device to communicate with the fourth communication device. For example, the second communication device is a ground network communication device, such as a gNB, and the fourth communication device is a TN UE. It can be considered that the gNB and the TN UE communicate using the first time-frequency resource. For another example, the second communication device is a non-ground network communication device, such as a satellite device, and the fourth communication device is an NTN UE. It can be considered that the satellite device and the NTN UE communicate using the first time-frequency resource.

[0131] In some examples, the fourth information can be used to indicate a time domain interval between the first time-frequency resource and a third time-frequency resource. The third time-frequency resource can be a time-frequency resource of a first signal. The first signal can be transmitted by the second communication device, and the first signal can be used to indicate whether the first time-frequency resource is occupied by the second communication device. The third time-frequency resource can also be referred to as a spectrum sensing resource, a channel state information interference measurement (CSI-IM) resource, a time-frequency sensing resource, a sensing signal resource, a sensing signal time-frequency resource, etc. The name of the third time-frequency resource is not limited in the embodiments of the present application. As shown in FIG. 3, it is assumed that the second communication device transmits the first signal on the third time-frequency resource. The first signal can indicate whether the subsequent first time-frequency resource is occupied by the second communication device. Accordingly, there is a certain time domain interval between the first time-frequency resource and the third time-frequency resource, which can be referred to as channel occupancy delay (COD). For another example, the time domain interval can be referred to as occupancy delay, signal indication delay, resource conflict delay, etc. The name of the time domain interval between the first time-frequency resource and the third time-frequency resource is not limited in the embodiments of the present application. In the following, the embodiments of the present application will be described taking the time domain interval between the first time-frequency resource and the third time-frequency resource as an example.

[0132] For example, for the case that the third communication device is a non-terrestrial network communication device, the first communication device can be an NTN UE, and the second communication device can be a terrestrial network communication device, such as a gNB. The COD can be greater than or equal to a second threshold value. The second threshold value can be considered as a round-trip delay between the NTN UE and the non-terrestrial network communication device, or can be considered as a round-trip delay between the gNB and the non-terrestrial network communication device. The reason is that the distance between the NTN UE and the non-terrestrial network communication device is similar to the distance between the gNB and the non-terrestrial network communication device, and accordingly the round-trip delay can also be considered as similar. For example, the second threshold value can be predefined by a protocol. For another example, the second threshold value can be related to at least one of the location information of the third communication device, the location information of the first communication device, and the coverage range of the third communication device.

[0133] For example, the second threshold value is related to the location information of the third communication device, i.e., the non-ground network communication device is located at different positions, and accordingly the second threshold value can be different. For example, the non-ground network communication device is located at position A, and accordingly the second threshold value is second threshold value A; for example, the non-ground network communication device is located at position B, and accordingly the second threshold value is second threshold value B; for example, the non-ground network communication device is located at range C, and accordingly the second threshold value is second threshold value C. For example, the above range can be a range of an orbit corresponding to the non-ground network communication device, and / or a range of a communication elevation angle corresponding to the non-ground network communication device. The range of the communication elevation angle is a range of an angle of the communication elevation angle, and the communication elevation angle can be considered as an angle between a line connecting the first communication device and the third communication device and a horizontal line on the ground. The specific determination manner can be referred to related technologies, and will not be described herein again.

[0134] For example, the second threshold value is related to the location information of the first communication device, i.e., the NTN UE is located at different positions, and accordingly the second threshold value can be different. For example, the NTN UE is located at position D, and accordingly the second threshold value is second threshold value D; for example, the NTN UE is located at position E, and accordingly the second threshold value is second threshold value E; for example, the NTN UE is located at range F, and accordingly the second threshold value is second threshold value F. For example, the above range can be a range of movement corresponding to the NTN UE, and / or a range of a communication elevation angle corresponding to the NTN UE.

[0135] For example, the second threshold value is related to the coverage range of the third communication device, i.e., the coverage range of the non-ground network communication device is different, and accordingly the second threshold value can be different. For example, the coverage range of the non-ground network communication device is range E, and accordingly the second threshold value is second threshold value E; for example, the coverage range of the non-ground network communication device is range F, and accordingly the second threshold value is second threshold value F. For the coverage range of the non-ground network communication device, the coverage range of the non-ground network communication device can also be determined according to a reference point of the coverage range of the non-ground network communication device. The reference point can be a beam center point of the non-ground network communication device, and the coverage range of the non-ground network communication device can be determined according to the beam center point and a coverage radius. Alternatively, the coverage range of the non-ground network communication device can be determined according to an included angle of the beam. The embodiments of the present application do not limit the manner of determining the coverage range of the non-ground network communication device.

[0136] For example, the first communication device can be a TN UE, and the second communication device can be a non-terrestrial network communication device, when the third communication device is a ground network communication device (e.g., a gNB). Accordingly, the COD can be greater than or equal to a fourth threshold value. The fourth threshold value can be considered as a round-trip delay between the TN UE and the gNB. For example, the fourth threshold value can be predefined by a protocol. For another example, the fourth threshold value can be related to at least one of the location information of the third communication device, the location information of the first communication device, and the coverage range of the third communication device. Details can be referred to the above description of the second threshold value, except that the subject performing the determination is different, which will not be described herein. When the fourth threshold value is related to the coverage range of the third communication device, the coverage range of the third communication device can be determined based on a cell radius.

[0137] The embodiments of the present application provide various ways to determine the time domain interval between the first time-frequency resource and the third time-frequency resource. In different scenarios, a more reasonable time domain interval between the first time-frequency resource and the third time-frequency resource can be determined by using a suitable way.

[0138] In some examples, the fourth information can be used to indicate the time domain position of the first signal. For example, the time domain resource can be divided into units with a length equal to the size of the first time domain resource. For example, the size of each square in FIG. 3 is equal to the size of a COT. Then, the fourth information can indicate the time domain position of the first signal in a COT, which means that the second communication device can send the first signal at the time domain position. For example, the time domain position of the first signal is the shaded area in FIG. 3. It can be understood that FIG. 3 only shows that the time domain position of the first signal is at the end of the COT. In other examples, the time domain position of the first signal can also be at the beginning of the COT, or at a certain position in the COT, which will not be limited herein.

[0139] In some examples, the fourth information can be used to indicate the time domain position of the first signal. For example, the time domain resource can be divided into units with a length equal to the size of the first time domain resource. For example, the size of each square in FIG. 3 is equal to the size of a COT. Then, the fourth information can indicate the time domain position of the first signal in a COT, which means that the second communication device can send the first signal at the time domain position. For example, the time domain position of the first signal is the shaded area in FIG. 3. It can be understood that FIG. 3 only shows that the time domain position of the first signal is at the end of the COT. In other examples, the time domain position of the first signal can also be at the beginning of the COT, or at a certain position in the COT, which will not be limited herein.

[0140] The embodiments of the present application provide various possible fourth information, so that the second communication device and the third communication device can synchronize the fourth information to accurately indicate whether the first time-frequency resource is occupied by the second communication device based on the first signal, thereby avoiding signal interference caused by the first communication device and the third communication device communicating based on the first time-frequency resource.

[0141] In some possible examples, the S101 is an optional step, i.e., one or more parameters included in the fourth information can also be pre-configured in the second communication device and the third communication device, and embodiments of the present application do not make any limitation in this regard.

[0142] S102, the second communication device sends a first signal.

[0143] For example, the second communication device sends the first signal on the third time-frequency resource. The first signal can be a signal specially used to indicate whether the first time-frequency resource is occupied by the second communication device. In this case, the first signal can be referred to as a sensing signal. The first signal can be sent by the second communication device to the first communication device, and correspondingly, the first communication device receives the first signal from the second communication device.

[0144] For another example, the first signal can be a data signal sent by the second communication device in the process of communicating with the fourth communication device. In this case, the first signal can be sent by the second communication device to the fourth communication device, and correspondingly, the fourth communication device receives the first signal from the second communication device. It can be understood that although the second communication device does not directly send the first signal to the first communication device, the first communication device can still receive the first signal.

[0145] In some examples, the second communication device can send the first signal based on the fourth information synchronized in the S101. For example, the first signal is sent in advance at a corresponding time domain position in the corresponding COT according to whether the first time-frequency resource is occupied by the second communication device. Referring to FIG. 3, the second communication device can send the first signal in advance in the shaded area in the COT according to whether the subsequent first time-frequency resource is occupied by the second communication device.

[0146] S103, the first communication device sends first information to the third communication device. Correspondingly, the third communication device receives the first information from the first communication device.

[0147] For example, the first communication device measures the first signal to determine a measurement result of the first signal. The first communication device informs the third communication device of the measurement result of the first signal through the first information. For example, the first information can be used to indicate the measurement result of the first signal. In some examples, the first communication device can periodically measure the first signal and periodically report the measurement result of the first signal to the third communication device.

[0148] In some examples, the first communication device can measure the power of the first signal, and correspondingly, the measurement result of the first signal can be the power of the first signal. If the third time-frequency resource is CSI-IM, the power of the first signal can be denoted as P CSI-IMFor example, the first communication device can measure a received quality, a signal to noise ratio (SNR), a signal interference noise ratio (SINR), or the like of the first signal, which is not limited in the embodiments of the present application.

[0149] In some examples, the measurement result of the first signal can be a measured value, such as a power of the first signal. Alternatively, the measurement result of the first signal can be whether the first signal is measured. For example, it can be indicated by a 1-bit. For example, the bit is 0, which means that the first signal is not measured. For another example, the bit is 1, which means that the first signal is measured. For another example, the bit is 0, which means that the first signal is measured. For another example, the bit is 1, which means that the first signal is not measured. In this case, the measurement result of the first signal can be determined by the measured value and the first threshold. For example, the first threshold can be denoted as T. In this case, the first threshold can be pre-configured in the first communication device. Alternatively, the third communication device can send third information to the first communication device. Accordingly, the first communication device receives the third information from the third communication device. The third information can be used to indicate the first threshold.

[0150] For example, the first communication device measures the power of the first signal. For example, if the power of the first signal is greater than or equal to the first threshold, it can be considered that the first communication device measures the first signal. For another example, if the power of the first signal is less than the first threshold, it can be considered that the first communication device does not measure the first signal. For another example, if the power of the first signal is greater than the first threshold, it can be considered that the first communication device measures the first signal. For another example, if the power of the first signal is less than or equal to the first threshold, it can be considered that the first communication device does not measure the first signal. It can be understood that for the case that the power of the first signal is equal to the first threshold, it can be determined according to the actual situation that the first communication device measures the first signal or the first communication device does not measure the first signal, which is not limited in the embodiments of the present application.

[0151] Of course, in the above examples, the measurement result of the first signal can also be implicitly indicated by indicating the relationship between the power of the first signal and the first threshold, and indicating whether the first communication device measures the first signal. For example, if the measurement result of the first signal is that the power of the first signal is greater than or equal to the first threshold, it means that the first communication device measures the first signal. The remaining cases can be referred to the description of the above examples, which will not be described herein. For the relationship between the power of the first signal and the first threshold, it can include: the power of the first signal is greater than the first threshold; the power of the first signal is equal to the first threshold; the power of the first signal is less than the first threshold.

[0152] In some examples, the first communication device measures the first signal, and it can be considered that the first time-frequency resource is occupied by the second communication device, or it can be considered that the first time-frequency resource is occupied. The first communication device does not measure the first signal, and it can be considered that the first time-frequency resource is not occupied by the second communication device, or it can be considered that the first time-frequency resource is not occupied, or it can be considered that the first time-frequency resource is idle.

[0153] The embodiments of the present application provide possible cases of the measurement result of the first signal, so that the third communication device can determine whether to schedule the corresponding time-frequency resource according to different measurement results, to avoid communication interference.

[0154] In some embodiments, the first communication device can determine the third time-frequency resource according to the protocol predefinition, or be pre-configured with the third time-frequency resource, so that the first communication device can know to detect the first signal on the third time-frequency resource. For example, the third communication device can send third information to the first communication device. Accordingly, the first communication device receives the third information from the third communication device. The third information can also be used to indicate the third time-frequency resource. That is, the third time-frequency resource can be dynamically, statically or semi-statically informed to the first communication device by the third communication device.

[0155] The embodiments of the present application indicate the third time-frequency resource by the third communication device, so that the first communication device can accurately measure the first signal. The accuracy of the measurement result of the first signal is improved. Further, the accuracy of the third communication device scheduling the corresponding time-frequency resource is improved, and the generation of communication interference is better avoided.

[0156] For the case that the second communication device is a non-terrestrial network communication device and the third communication device is a terrestrial network communication device (such as gNB), one case is that the first communication device measures the first signal, such as the TN UE measures the first signal, and the TN UE reports the measurement result of the first signal to the gNB. Another case can be that the third communication device measures the first signal, such as the gNB measures the first signal.

[0157] S104, the third communication device sends second information to the first communication device. Accordingly, the first communication device receives the second information from the third communication device.

[0158] For example, the second information is used to schedule a second time-frequency resource. The first time-frequency resource includes the second time-frequency resource. It can also be considered that the second time-frequency resource belongs to the first time-frequency resource. The second time-frequency resource can be part or all of the first time-frequency resource.

[0159] For example, the third communication device can determine whether to schedule the second time-frequency resource according to the measurement result of the first signal received in S103. For example, when the measurement result of the first signal indicates that the first time-frequency resource will not be occupied, or the first time-frequency resource is not occupied by the second communication device, or indicates that the first signal is not measured, or indicates that the first time-frequency resource is idle, it can be considered that the third communication device and the first communication device can occupy the first time-frequency resource for communication. The third communication device can schedule the entire first time-frequency resource, or can schedule part of the first time-frequency resource, such as the second time-frequency resource.

[0160] In some examples, if the measurement result of the first signal indicates that the first time-frequency resource is occupied, or the first time-frequency resource is occupied by the second communication device, or indicates that the first signal is measured, the third communication device does not schedule the first time-frequency resource. That is, the third communication device does not schedule all resources of the first time-frequency resource, so as to avoid mutual interference of the data (including transmitted data and / or received data) transmitted by the second communication device on the first time-frequency resource.

[0161] S105, the first communication device and the third communication device communicate based on the second time-frequency resource.

[0162] For example, the first communication device can communicate with the third communication device based on the second time-frequency resource scheduled by the second information after receiving the second information. In some examples, the first communication device can continue to measure the first signal and report the measurement result of the first signal during the communication with the third communication device. So that the third communication device can dynamically adjust whether to continue to schedule the second time-frequency resource.

[0163] In combination with FIG. 4, it can be seen how the third communication device schedules the second time-frequency resource in the method shown in FIG. 2. Taking the first communication device as an NTN UE, the second communication device as a gNB, the third communication device as a satellite device, and the fourth communication device as a TN UE as an example. It is assumed that the gNB and the TN UE communicate on some time-frequency resources, which are shown by the diagonal line filled squares. Among them, the third time-frequency resource in the time-frequency resource A can indicate whether the first time-frequency resource is occupied by the second communication device. It can be seen that the third time-frequency resource in the time-frequency resource A is a white square, which indicates that the second communication device does not occupy the first time-frequency resource. The black square in FIG. 4 means that the first COT after the COD is occupied by the second communication device. For example, the third time-frequency resource in the time-frequency resource before the time-frequency resource A is a black square, which means that the second communication device occupies and transmits or receives corresponding data in the time-frequency resource before the first time-frequency resource in FIG. 4.

[0164] It can be understood that each large square in FIG. 4 represents a COT, and the small squares included in each large square, such as black small squares or white small squares, are third time-frequency resources in each COT.

[0165] Continuing to FIG. 4, the NTN UE measures a first signal on the third time-frequency resource in the time-frequency resource A. The NTN UE reports a measurement result of the first signal to the satellite device. It can be understood that after a certain transmission delay, the satellite device receives the measurement result of the first signal reported by the NTN UE, and can schedule a second time-frequency resource according to the measurement result of the first signal. The second time-frequency resource can be part of the first time-frequency resource, or the second time-frequency resource is the complete first time-frequency resource. The satellite device sends second information for scheduling the second time-frequency resource to the NTN UE. After a certain transmission delay, the NTN UE receives the second information and communicates with the satellite device based on the second time-frequency resource. It can be seen that the second time-frequency resource in which the NTN UE finally communicates with the satellite device is aligned with the first time-frequency resource in the first row in FIG. 4 in the time domain. Therefore, it can be considered that the role of the COD is to indicate the occupation of the first time-frequency resource in advance. To ensure that the NTN UE and the satellite device can accurately and timely schedule the second time-frequency resource for communication.

[0166] It can also be understood that the setting of the COD can be related to the transmission delay between the NTN UE and the satellite device, for example, at least to ensure that the second time-frequency resource is aligned with the first time-frequency resource in the time domain under the condition of meeting the transmission delay. The transmission delay can be considered relative to the time axis of the gNB.

[0167] The embodiments of the present application measure the first signal by the first communication device, and report the measurement result of the first signal to the third communication device. The third communication device determines the occupation of the first time-frequency resource by the second communication device based on the measurement result of the first signal, and then performs corresponding resource scheduling. This improves the resource utilization efficiency and avoids mutual interference between the communication between the first communication device and the third communication device, and the communication between the second communication device and other communication devices.

[0168] In a communication method provided in the embodiments of the present application, in view of the communication between the ground network communication device and the UE served thereby, a precoding manner, such as beamforming, can be used to improve the channel quality. If the beam used by the second communication device for sending the first signal, such as the beam used for communicating with the fourth communication device, does not cover the first communication device, the first communication device cannot receive the first signal. Then the first communication device can consider that the first time-frequency resource is idle, or the second communication device does not occupy the first time-frequency resource. This will lead to that the third communication device schedules the second time-frequency resource and communicates with the first communication device based on the second time-frequency resource. However, the second communication device actually sends the first signal, which means that the second communication device will occupy the first time-frequency resource. This will cause a communication interference situation. Therefore, in order to avoid this situation, the method can further include that the third communication device sends fifth information to the second communication device. Correspondingly, the second communication device receives the fifth information from the third communication device. Alternatively, the second communication device sends the fifth information to the third communication device. Correspondingly, the third communication device receives the fifth information from the second communication device. Alternatively, the first communication device sends the fifth information to the third communication device. Correspondingly, the third communication device receives the fifth information from the first communication device.

[0169] For example, the fifth information is used to indicate a policy type. The policy type can include a first policy type and a second policy type. The first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication device. In some examples, the first policy type can also be referred to as a "paired scheduling" policy, etc. In other examples, the second policy type can also be referred to as a "paired sensing" policy, etc. The present application does not limit the names of the first policy type and the second policy type.

[0170] For example, for the scenario in which the first communication device sends the fifth information to the third communication device, the policy type can be associated with the signal. For example, the policy type corresponding to the first signal A is the first policy type, and the policy type of the first signal B is the second policy type. Then, when the first communication device receives the first signal A, it can determine that the first policy type is used. The first communication device can indicate the first policy type to the third communication device.

[0171] For the first policy type:

[0172] Referring to the communication scenario shown in FIG. 5, it is assumed that the gNB and the TN UE1 communicate by using the beam A, and the first signal is transmitted. However, the gNB and the TN UE2 communicate by using the beam B on the first time-frequency resource, and the beam B can cover the NTN UE. However, since the beam A used by the gNB when transmitting the first signal does not cover the NTN UE. Therefore, the NTN UE cannot receive the first signal, resulting in that the satellite device schedules the first time-frequency resource to communicate with the NTN UE. It can be seen that on the first time-frequency resource, the communication between the satellite device and the NTN UE, and the communication between the gNB and the TN UE2 will interfere with each other.

[0173] In some examples, the sensing strategy type includes a first strategy type. For example, the first time-frequency resource can have an association relationship with the first communication device. That is, the third communication device can adopt the principle of "who senses who uses", or can be the principle of "who measures who uses". That is, the measurement result of the first signal is measured by which device, and then the second time-frequency resource scheduled based on the first time-frequency resource will be allocated to the device. Or, allocated to other devices associated with the device; or, allocated to other devices near the device. For the definition of near, it can be considered that the distance between the devices is within the fifth threshold, and / or includes the case that the distance between the devices is the fifth threshold. The value of the fifth threshold can be selected according to the actual situation, and the embodiment of the present application does not limit it. In this case, it can be considered that the first time-frequency resource is paired with the first communication device.

[0174] For another example, the first time-frequency resource can have an association relationship with the fourth communication device. The fourth communication device can be located within the coverage range of the first beam. The first beam can be the beam used by the second communication device to transmit the first signal. The fourth communication device and the second communication device can communicate through the first time-frequency resource. That is, if the second communication device occupies the first time-frequency resource, the second communication device communicates with the fourth communication device through the first time-frequency resource. In some examples, the beam can be considered as a beamforming, or can be considered as a precoding codebook. For example, the beam can also be identified by a quasi co-location (QCL) type D, or represented by a transmission configuration indicator (TCI) state, which is not limited by the embodiment of the present application. In this case, it can be considered that the first time-frequency resource is paired with the fourth communication device.

[0175] It can be considered that for the second communication device, the principle of "COD delay association scheduling" can be adopted. That is, in the process of scheduling the first time-frequency resource by the second communication device and communicating with the fourth communication device, the fourth communication device considered is the device that is spatially associated with the first time-frequency resource. Spatial association means that the coverage range of the first beam used to send the first signal can cover the fourth communication device. Of course, the first beam should also cover the first communication device. Otherwise, the first communication device cannot receive the first signal. For example, spatial association can be the coverage range of a beam similar to the first beam, which can cover the fourth communication device. The beam similar to the first beam can be an adjacent beam of the first beam, such as being divided into multiple beams in a certain manner in sequence, and each beam can have a beam identifier. Adjacent beams are beams with adjacent beam identifiers. For example, the beams are divided in sequence as beam 1, beam 2, beam 3, and beam 4. Beam 2 can be considered as an adjacent beam of beam 1, beam 3 can be considered as an adjacent beam of beam 2 and beam 4, but beam 3 is not an adjacent beam of beam 1, and beam 4 is not an adjacent beam of beam 2. Of course, the above is only an exemplary description, and the embodiments of the present application are not limited thereto. In other examples, adjacent beams of the first beam can also be determined according to the angle between the beam center points, or by whether the beam angle overlaps. The adjacent beams can be defined according to the actual situation, and the embodiments of the present application are not limited thereto.

[0176] The above-mentioned similar beams of the first beam can cover the fourth communication device, and it can be considered that the second communication device uses the similar beams of the first beam to communicate with the fourth communication device, or the second communication device uses the similar beams of the first beam to provide services for the fourth communication device.

[0177] Referring to FIG. 6, similar to FIG. 4, the difference is that the diagonal-filled COT and the grid-filled COT correspond to the gNB using different beams to provide services for different TN UEs. For example, the gNB uses beam 11 to communicate with TN UE2 on time-frequency resource A, and the gNB uses beam 22 to communicate with TN UE1 on time-frequency resource B. The beam 11 can cover the NTN UE, while the beam 22 cannot cover the NTN UE. It is assumed that the length of the COD is 3 times the length of the COT. The NTN UE detects the first signal on the third time-frequency resource in time-frequency resource A (i.e., the white square in time-frequency resource A) and determines that the gNB does not occupy time-frequency resource A'. The NTN UE detects the first signal on the third time-frequency resource in time-frequency resource B (i.e., the black square in time-frequency resource B), and because the beam 22 cannot cover the NTN UE, the NTN UE considers that the gNB does not occupy time-frequency resource B' (actually, the gNB occupies time-frequency resource B' and uses beam 22 to communicate with TN UE1). However, because the gNB uses beam 22 to communicate with TN UE1 on time-frequency resource B', the beam 22 cannot cover the NTN UE and thus does not interfere with the NTN UE. Therefore, in this case, the third communication device can also schedule time-frequency resource A' to communicate with the first communication device. Alternatively, the third communication device can also schedule time-frequency resource B' to communicate with the first communication device.

[0178] In some examples, in order to reduce the influence of the third communication device scheduling the first time-frequency resource to communicate with the first communication device on the communication between the second communication device and the fourth communication device, the third communication device and the first communication device can transmit signals using smaller power to reduce potential interference to the second communication device.

[0179] The embodiments of the present application ensure that the first time-frequency resource scheduled based on the measurement result of the first signal is not interfered, thereby ensuring the service performance of the third communication device.

[0180] For the second strategy type:

[0181] Referring to the communication scenario shown in FIG. 7, it is assumed that the gNB uses beam A to communicate with TN UE1, and the beam A can cover the NTN UE1. The gNB uses beam B to communicate with TN UE2, and the beam B can cover the NTN UE2. The gNB uses beam C to communicate with TN UE3, and the beam C does not cover any NTN UE. Accordingly, there is no TN UE near the NTN UE3.

[0182] In some examples, the perception strategy type includes a second strategy type. For example, the distance between the first communication device and the fourth communication device is less than or equal to a third threshold. Another example is that the first communication device is within the coverage area of ​​a first beam, and the fourth communication device communicates with the second communication device using a second beam, where the coverage areas of the second beam overlap with those of the first beam, or the second beam and the first beam are the same beam.

[0183] Unlike the first strategy type described above, the second strategy type does not restrict the first time-frequency resource. Instead, it considers the first communication device while the second communication device transmits the first signal on the third time-frequency resource, pairing the first and fourth communication devices. This allows the first communication device to accurately determine whether the first time-frequency resource is occupied, enabling the third communication device to schedule the first time-frequency resource more flexibly.

[0184] For example, during the exchange of fourth information between the third communication device and the second communication device in S101, the fourth information may also include the location information of the first communication device and / or beam information related to the first communication device. For instance, the location information of the first communication device may be its coordinates, a Global Navigation Satellite System (GNSS) identifier, etc. The beam information related to the first communication device may indicate the beams that can cover the first communication device.

[0185] In this case, when the second communication device transmits the first signal on the third time-frequency resource, it may consider selecting a fourth communication device that satisfies the condition that the distance between it and the first communication device is less than or equal to a third threshold for communication and transmission of the first signal.

[0186] Alternatively, the second communication device can consider using a second beam to communicate with the fourth communication device and to transmit the first signal on a third time-frequency resource. The coverage area of ​​the second beam may overlap with that of the first beam, meaning the first beam can cover the beam of the first communication device. This overlap can be replaced by the angle between the first and second beams being less than or equal to an angle threshold. In some other examples, the second beam and the first beam may be the same beam. This ensures that if the second communication device transmits the first signal, the first communication device can receive it, avoiding situations where the first communication device fails to receive the first signal.

[0187] The embodiments of the present application ensure that the first communication device can accurately perceive whether the first time-frequency resource will be used by the second communication device. If the first time-frequency resource is occupied, the third communication device does not schedule the first time-frequency resource; if the first time-frequency resource is idle, the third communication device can schedule the first time-frequency resource to the first communication device. The flexibility of the first time-frequency resource scheduling is improved.

[0188] In the communication method provided by the embodiments of the present application, for the case of using the first strategy type or the second strategy type, the NTN UE can be located near the TN UE, but the beam used for communication between the gNB and the TN UE can not be well covered to the NTN UE. For this kind of case, the gNB can adjust the precoding in the process of sending the first signal, so that the NTN UE can accurately receive the first signal, such as adjusting the beam. The scenario can be referred to as shown in FIG. 8, and the shaded area is the beam adjusted for precoding to cover the NTN UE. However, such operation, for the TN UE, its equivalent channel in the process of communication with the gNB will change with the change of the precoding. The channel estimation between the gNB and the TN UE communication deviates, resulting in the decline of the communication performance.

[0189] Therefore, the method can further include: the second communication device sends a downlink control information (DCI) to the fourth communication device. For example, the DCI can be used to schedule the third time-frequency resource.

[0190] Next, through a variety of different cases, how the DCI schedules the third time-frequency resource is described.

[0191] Case 1: The second communication device sends a first DCI and a second DCI to the fourth communication device. The first DCI is used to schedule the fourth time-frequency resource, and the second DCI is used to schedule the third time-frequency resource.

[0192] For example, the fourth time-frequency resource can be a time-frequency resource used by the second communication device to communicate with the fourth communication device. For example, the time-frequency resources in the time-frequency resource A in FIG. 4 except the third time-frequency resource can be considered as the fourth time-frequency resource. That is, the third time-frequency resource and the fourth time-frequency resource jointly constitute the time-frequency resource A in FIG. 4. Referring to the resource distribution diagram shown in FIG. 9, taking one COT length as an example, assuming that one COT length can be 1 slot, and the third time-frequency resource is located in the last two symbols in the COT. Then the first DCI can be used to schedule the first 12 symbols in the COT for transmitting a data signal. It can be considered that the first DCI schedules a physical downlink shared channel (PDSCH) 1. The demodulation reference signal (DMRS) for channel estimation in the PDSCH 1 can be resource-mapped according to a first mapping manner. The second DCI can be used to schedule the last 2 symbols in the COT for transmitting a first signal. It can be considered that the second DCI schedules a PDSCH 2. The DMRS for channel estimation in the PDSCH 2 can be resource-mapped according to a second mapping manner. For example, the time-frequency positions of the DMRS mapped by the first mapping manner are different from the time-frequency positions of the DMRS mapped by the second mapping manner.

[0193] In some examples, the first mapping manner can be referred to as mapping type A, and the PDSCH 1 can also be referred to as a mapping type A PDSCH. The second mapping manner can be referred to as mapping type B, and the PDSCH 2 can also be referred to as a mapping type B PDSCH.

[0194] For example, the precoding codebook used by the fourth time-frequency resource is different from the precoding codebook used by the third time-frequency resource. In other words, the beam used by the fourth time-frequency resource is different from the beam used by the third time-frequency resource.

[0195] The embodiments of the present application can schedule different PDSCHs by different DCIs, so that the fourth communication device performs channel estimation for different PDSCHs respectively, thereby improving the stability of the communication system.

[0196] Case 2: The second communication device sends a third DCI to the fourth communication device. The third DCI is used to schedule the third time-frequency resource and the fourth time-frequency resource. In this case, one DCI is used to schedule different time-frequency resources, and the mapping manners of the DMRS in different time-frequency resources can be different.

[0197] Referring to FIG. 10, the third DCI can schedule a PDSCH 3. The PDSCH 3 can include a subblock 1 and a subblock 2. The subblock 1 and the subblock 2 can employ different precoding codebooks (or different beams), respectively, and accordingly, mapping manners of DMRSs in the subblock 1 and the subblock 2 are different. The specific implementation manner is similar to that in case 1, and the difference is only that case 2 schedules one PDSCH, while case 1 schedules two PDSCHs.

[0198] Compared with case 1, in case 2, the fourth communication device does not need to blindly detect multiple PDSCHs and does not need to process multiple transport blocks (TBs), and the complexity is lower.

[0199] Embodiments of the present application can schedule a PDSCH including multiple subblocks through one DCI, so that the fourth communication device performs channel estimation for different subblocks respectively, and the stability of the communication system is improved.

[0200] Case 3: The time-frequency resource corresponding to the PDCCH is used as the third time-frequency resource.

[0201] For example, the second communication device sends a PDCCH to the fourth communication device. Since the PDCCH and the PDSCH can employ different precoding codebooks or different beams, the fourth communication device can perform channel estimation and demodulation decoding on the PDCCH, without affecting the sending and receiving of the subsequent PDSCH.

[0202] In the communication method provided by the embodiments of the present application, if the third communication device is a non-terrestrial network communication device, the coverage range of the third communication device can include multiple different second communication devices. There can be multiple different first communication devices in the coverage range of each second communication device. Then there is a case that different second communication devices can schedule the same first time-frequency resource. However, whether to schedule the first time-frequency resource is determined by each second communication device itself. Therefore, there can be some first communication devices that measure the first signals sent by some second communication devices, indicating that these second communication devices will occupy the first time-frequency resource. Another part of the first communication devices cannot measure the first signals. For the first communication devices that measure the first signals, the measurement results of the first signals can be reported to the third communication device. Then the third communication device can receive the measurement results of the first signals reported by one or more first communication devices. The third communication device can determine that there are some second communication devices occupying the first time-frequency resource in its coverage range. Therefore, the third communication device can determine not to schedule the first time-frequency resource for any first communication device, to avoid possible communication interference.

[0203] In some examples, the third communication device can further determine, according to one or more of the location information of each first communication device, the coverage of the second communication device, and the coverage of the beam used by the second communication device to occupy the first time-frequency resource, whether the second communication device occupying the first time-frequency resource will cause communication interference to the possibly allocated first communication device. In the case that the third communication device determines that the second communication device occupying the first time-frequency resource will not cause communication interference to the possibly allocated first communication device, the first time-frequency resource can be scheduled to the first communication device. Of course, in other examples, the third communication device can also consider more or less relevant information according to actual conditions to determine whether the second communication device occupying the first time-frequency resource will cause communication interference to the possibly allocated first communication device, and the embodiments of the present application are not limited here.

[0204] In some embodiments, for the case that the coverage of the third communication device can include multiple different second communication devices, considering that the third communication device performs S101 with each second communication device can bring a relatively large resource overhead. An implementation is to determine a target second communication device from the multiple different second communication devices. The target second communication device can be considered as a central node in the multiple different second communication devices. Each second communication device has a communication link with the target second communication device. The third communication device can perform S101 with the target second communication device. Then the fourth information is synchronized to the remaining second communication devices by the target second communication device. In order to reduce the resource consumption brought by synchronizing the fourth information.

[0205] It can be understood that each of the above embodiments of the present application can be independently implemented, or can be combined with each other; there is no absolute affiliation between each embodiment, and each embodiment can be combined with each other under any condition to obtain the corresponding effect.

[0206] It can be understood that, in order to implement the functions in the above embodiments, the network device includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, in combination with the units and method steps of each example described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or hardware and computer software combination. Whether a certain function is executed in hardware or computer software driven hardware depends on the specific application scenario and design constraints of the technical solution.

[0207] FIG. 11 and FIG. 12 are structural diagrams of possible communication devices provided by the embodiments of the present application. The communication devices can be used to implement the functions of the first communication device, the second communication device or the third communication device in the above-mentioned method embodiments, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiments. In the embodiments of the present application, the communication device can be the RAN node 110 shown in FIG. 1, wherein the RAN node can also be referred to as an access network device or a network device. The communication device can also be a module (such as a chip) applied to a network device. The communication device can also be the terminal 120 shown in FIG. 1, and the communication device can also be a module (such as a chip) applied to a terminal. The communication device can also be a non-terrestrial network communication device, such as a satellite device. The communication device can also be a module (such as a chip) applied to a non-terrestrial network communication device.

[0208] In the embodiments of the present application, the device for implementing the function of the terminal can be a terminal, or a device capable of supporting the terminal to implement the function, such as a chip system, which can be installed in the terminal or used in combination with the terminal. The device for implementing the function of the network device can be a network device, or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device or used in combination with the network device. The device for implementing the function of the non-terrestrial network communication device can be a non-terrestrial network communication device, or a device capable of supporting the non-terrestrial network communication device to implement the function, such as a chip system, which can be installed in the non-terrestrial network communication device or used in combination with the non-terrestrial network communication device.

[0209] In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0210] As shown in FIG. 11, the communication device 1100 includes a processing unit 1110 and a transceiver unit 1120. The communication device 1100 is used to implement the functions of the first communication device, the second communication device and / or the third communication device in the above-mentioned method embodiments shown in FIG. 2.

[0211] When the communication device 1100 is used to implement the functions of the first communication device in the method embodiments shown in FIG. 2, the transceiver unit 1120 is configured to receive the first signal from the second communication device. The transceiver unit 1120 is further configured to send the first information to the third communication device. The transceiver unit 1120 is further configured to receive the second information from the third communication device. The processing unit 1110 is configured to control the transceiver unit 1120 to communicate with the third communication device based on the second time-frequency resource.

[0212] When the communication apparatus 1100 is configured to implement the function of the third communication apparatus in the method embodiment shown in FIG. 2, the transceiver 1120 is configured to receive the first information from the first communication apparatus. The processing unit 1110 is configured to control the transceiver 1120 to send the second information to the first communication apparatus according to the measurement result of the first signal. The processing unit 1110 is further configured to control the transceiver 1120 to communicate with the first communication apparatus based on the second time-frequency resource.

[0213] When the communication apparatus 1100 is configured to implement the function of the second communication apparatus in the method embodiment shown in FIG. 2, the transceiver 1120 is configured to receive the fourth information from the third communication apparatus. The processing unit 1110 is configured to control the transceiver 1120 to send the first signal based on the fourth information.

[0214] For more detailed description of the processing unit 1110 and the transceiver 1120, please refer to the description of the method embodiment shown in FIG. 2.

[0215] As shown in FIG. 12, the communication apparatus 1200 includes a processor 1210 and an interface circuit 1220. The processor 1210 and the interface circuit 1220 are coupled with each other. It can be understood that the interface circuit 1220 can be a transceiver or an input / output interface. Optionally, the communication apparatus 1200 can further include a memory 1230 for storing instructions executed by the processor 1210 or storing input data required by the processor 1210 for executing instructions or storing data generated after the processor 1210 executes instructions. Sometimes, the interface circuit 1220 can also be understood as a part of the processor 1210, and in this case, the communication apparatus 1200 includes the processor 1210.

[0216] When the communication apparatus 1200 is configured to implement the method shown in FIG. 2, the processor 1210 is configured to implement the function of the processing unit 1110, and the interface circuit 1220 is configured to implement the function of the transceiver 1120.

[0217] When the above communication apparatus is a terminal chip, the terminal chip implements the function of the terminal in the above method embodiment. The terminal chip receives information from an access network device or a non-terrestrial network communication apparatus, which can be understood as that the information is first received by other modules (such as a radio frequency module or an antenna) in the terminal, and then transmitted to the terminal chip by these modules. The terminal chip sends information to the access network device or the non-terrestrial network communication apparatus, which can be understood as that the information is first sent to other modules (such as a radio frequency module or an antenna) in the access network device or the non-terrestrial network communication apparatus, and then transmitted to the access network device or the non-terrestrial network communication apparatus by these modules.

[0218] When the communication device is a chip applied to the access network device, the access network device chip implements the functions of the access network device in the method embodiments. The access network device chip receives information from the terminal or the non-ground network communication device, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the access network device first, and then being sent to the access network device chip by the modules. The access network device chip sends information to the terminal or the non-ground network communication device, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the terminal or the non-ground network communication device first, and then being sent to the terminal or the non-ground network communication device by the modules.

[0219] When the communication device is a chip applied to the non-ground network communication device, the non-ground network communication device chip implements the functions of the non-ground network communication device in the method embodiments. The non-ground network communication device chip receives information from the terminal or the access network device, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the non-ground network communication device first, and then being sent to the non-ground network communication device chip by the modules. The non-ground network communication device chip sends information to the terminal or the access network device, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the terminal or the access network device first, and then being sent to the terminal or the access network device by the modules.

[0220] In the present application, entity A sending information to entity B can be A sending directly to B, or A sending indirectly to B through other entities. Similarly, entity B receiving information from entity A can be entity B receiving the information sent by entity A directly, or entity B receiving the information sent by entity A indirectly through other entities. Here, entity A and B can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be the information interaction between RAN nodes and terminals, for example, the information interaction between a base station and a terminal; the sending and receiving of information can also be the information interaction between two RAN nodes, for example, the information interaction between a CU and a DU; the sending and receiving of information can also be the information interaction between different modules inside one device, for example, the information interaction between a terminal chip and other modules of the terminal, or the information interaction between a base station chip and other modules of the base station.

[0221] It can be understood that the processor in the embodiments of the present application can be a central processing unit, and can also be other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0222] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, which can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an application specific integrated circuit (ASIC). In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also exist as discrete components in the base station or the terminal.

[0223] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are performed. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment, or other programmable apparatus. The computer programs or instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs or instructions can be transferred from one website site, computer, server, or data center to another website site, computer, server, or data center through a wired or wireless manner. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; or a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0224] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0225] In the present application, "at least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the textual description of the present application, the character " / " generally represents an "or" relationship between the associated objects before and after it; in the formulas of the present application, the character " / " represents a "division" relationship between the associated objects before and after it. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0226] It can be understood that various numerical numbers involved in the embodiments of the present application are only distinguished for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic.

[0227] In the present application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on a downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on an uplink channel. In order for the terminal to communicate with the base station, it needs to establish a wireless connection on the cell controlled by the base station. The cell that establishes a wireless connection with the terminal is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0228] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0229] The terms "first" and "second" and the like in the specification and drawings of the embodiments of the present application are used to distinguish different objects or different processing of the same object. The "first", "second" and the like can distinguish the same items or similar items with basically the same function and effect. For example, the first device and the second device are only used to distinguish different devices, and do not limit the sequence. Those skilled in the art can understand that the "first", "second" and the like do not limit the quantity and execution order, and the "first", "second" and the like do not necessarily mean different.

[0230] In addition, the terms "comprise", "comprising", "include", "including", "have" and "having" as used herein are intended to be open-ended terms that specifically permit the inclusion of unspecified elements. For example, a process, method, system, product, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but can include other steps or elements not expressly listed or inherent to such process, method, system, product, or apparatus.

[0231] In the present embodiments, the word "exemplary" or "for example" is used to mean "an example of" or "an example, only. Any embodiment or design solution described as "exemplary" or "for example" in the present embodiments should not be construed as preferred or advantageous over other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present concepts in a concrete manner for ease of understanding.

[0232] It can be understood that the "embodiments" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiments are included in at least one of the embodiments of the present embodiments. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It can be understood that in various embodiments of the present embodiments, the size of the serial number of each process does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the present embodiments.

[0233] It can be understood that in the present embodiments, "when" and "if" refer to the corresponding processing under certain objective conditions, not the time limit, and do not require judgment actions when implementing, nor mean that there are other limitations.

[0234] It can be understood that some optional features in the present embodiments can be implemented independently in some scenarios without relying on other features, such as the scheme currently based on, to solve the corresponding technical problems and achieve the corresponding effects. In some scenarios, it can also be combined with other features according to the needs. Correspondingly, the devices given in the present embodiments can also realize these features or functions, which will not be repeated here.

[0235] In the embodiments of the present application, the same or similar parts among various embodiments can be mutually referred to, unless otherwise specified. In the various embodiments of the embodiments of the present application, and the various implementation manners / implementation methods / realization methods in the various embodiments, the terms and / or descriptions of different embodiments, and the various implementation manners / implementation methods / realization methods in the various embodiments have consistency, and can be mutually referred to, unless otherwise specified and in conflict with logic. The technical features in different embodiments, and the various implementation manners / implementation methods / realization methods in the various embodiments can be combined to form new embodiments, implementation manners, implementation methods, or realization methods according to their inherent logical relationship. The implementation manners of the embodiments of the present application described below do not constitute a limitation on the protection scope of the embodiments of the present application.

Claims

1. A communication method characterized by comprising: The method is applied to a first communication device or a chip in the first communication device, and the method comprises: receiving a first signal from a second communication device, the first signal being used to indicate that the second communication device occupies a first time-frequency resource; sending first information to a third communication device, the first information being used to indicate a measurement result of the first signal; receiving second information from the third communication device, the second information being used to schedule a second time-frequency resource, wherein the first time-frequency resource comprises the second time-frequency resource; communicating with the third communication device based on the second time-frequency resource.

2. The method of claim 1, wherein, The method further comprises: receiving third information from the third communication device, the third information being used to indicate a first threshold value; the measurement result of the first signal comprises: the power of the first signal is greater than the first threshold value; or the power of the first signal is equal to the first threshold value; or the power of the first signal is less than the first threshold value.

3. The method of claim 2, wherein, The third information is further used to indicate a third time-frequency resource, wherein the third time-frequency resource is a time-frequency resource of the first signal.

4. The method of claim 3, wherein, The third communication device is a non-ground network communication device, and a time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold value, wherein the second threshold value is predefined by a protocol, or the second threshold value is related to at least one of the following information: location information of the third communication device; or location information of the first communication device; or coverage range of the third communication device.

5. The method according to any one of claims 1 to 4, characterized in that, The first time-frequency resource has an association relationship with the first communication device; and / or, the first time-frequency resource has an association relationship with a fourth communication device, wherein the fourth communication device is located in a coverage range of a first beam, the first beam is a beam used by the second communication device to send the first signal, and the fourth communication device communicates with the second communication device through the first time-frequency resource.

6. The method according to any one of claims 1 to 5, characterized in that, A distance between the first communication device and a fourth communication device is less than or equal to a third threshold value, wherein the fourth communication device communicates with the second communication device through the first time-frequency resource; and / or, The first communication device is located in a coverage range of a first beam, the fourth communication device communicates with a second beam used by the second communication device to communicate, the second beam has an overlap with the coverage range of the first beam, or the second beam is the same beam as the first beam.

7. A communication method characterized by comprising: The method is applied to a third communication device or a chip in the third communication device, and the method comprises: receiving first information from a first communication device, the first information being used to indicate a measurement result of a first signal, wherein the first signal is used to indicate that a second communication device occupies a first time-frequency resource; sending second information to the first communication device according to the measurement result of the first signal, wherein the second information is used to schedule a second time-frequency resource, and the first time-frequency resource comprises the second time-frequency resource; communicating with the first communication device based on the second time-frequency resource.

8. The method of claim 7, wherein, The method further comprises: sending third information to the first communication device, the third information being used to indicate a first threshold value; the measurement result of the first signal comprises: the power of the first signal is greater than the first threshold value; or the power of the first signal is equal to the first threshold value; or the power of the first signal is less than the first threshold value.

9. The method of claim 8, wherein, The third information is also used to indicate a third time-frequency resource, wherein the third time-frequency resource is a time-frequency resource of the first signal.

10. The method of claim 9, wherein, The third communication device is a non-ground network communication device, and a time domain interval between the first time-frequency resource and the third time-frequency resource is greater than or equal to a second threshold value, wherein the second threshold value is protocol predefined, or the second threshold value is related to at least one of the following information: location information of the third communication device; or location information of the first communication device; or coverage range of the third communication device.

11. The method according to any of claims 7-10, characterized by, The method further comprises: sending fourth information to the second communication device; or receiving fourth information from the second communication device; The fourth information is used to indicate at least one of the following parameters: a first time domain resource, the first time-frequency resource comprising the first time domain resource; a time domain interval between the first time-frequency resource and the third time-frequency resource, wherein the third time-frequency resource is a time-frequency resource of the first signal; or a time domain position of the first signal.

12. The method according to any one of claims 7-11, characterized in that, The method further comprises: sending fifth information to the second communication device, wherein the fifth information is used to indicate a policy type, the policy type comprising a first policy type and a second policy type, the first policy type being related to the first time-frequency resource, and the second policy type being related to the first communication device; or receiving fifth information from the first communication device or the second communication device.

13. The method of claim 12, wherein, The awareness policy type comprises the first policy type, the first time-frequency resource has an association relationship with the first communication device; and / or, the first time-frequency resource has an association relationship with a fourth communication device, wherein the fourth communication device is located in a coverage range of a first beam, the first beam is a beam used by the second communication device to send the first signal, and the fourth communication device communicates with the second communication device through the first time-frequency resource.

14. The method of claim 12, wherein, The awareness policy type comprises the second policy type, a distance between the first communication device and a fourth communication device is less than or equal to a third threshold value, wherein the fourth communication device communicates with the second communication device through the first time-frequency resource; and / or, The first communication device is located in a coverage range of a first beam, the fourth communication device communicates with the second communication device through a second beam, the second beam has an overlap with the coverage range of the first beam, or the second beam is the same as the first beam.

15. A method of communication, comprising: The method is applied to a second communication device or a chip in the second communication device, and the method comprises: receiving fourth information from a third communication device; or sending fourth information to the third communication device. The fourth information is used to indicate at least one of the following parameters: a first time domain resource, the first time-frequency resource comprises the first time domain resource; a time domain interval between the first time-frequency resource and a third time-frequency resource, wherein the third time-frequency resource is a time-frequency resource of the first signal; or a time domain position of the first signal. The first signal is transmitted based on the fourth information, and the first signal is used to indicate that the second communication device occupies the first time-frequency resource.

16. The method of claim 15, wherein, The third communication device is a non-ground network communication device, and the time domain interval between the first time-frequency resource and a third time-frequency resource is greater than or equal to a second threshold, wherein the third time-frequency resource is a time-frequency resource of the first signal, and the second threshold is predefined by a protocol or is related to at least one of the following information: Position information of the third communication device; or Position information of the first communication device; or Coverage range of the third communication device.

17. The method according to claim 15 or 16, characterized in that, The method further comprises: Receiving fifth information from the third communication device, wherein the fifth information is used to indicate a policy type, the policy type comprises a first policy type and a second policy type, the first policy type is related to the first time-frequency resource, and the second policy type is related to the first communication device; or Sending the fifth information to the third communication device.

18. The method of claim 17, wherein, The awareness policy type comprises the first policy type, the first time-frequency resource has an association relationship with the first communication device; and / or, the first time-frequency resource has an association relationship with a fourth communication device, wherein the fourth communication device is located in a coverage range of a first beam, the first beam is a beam used by the second communication device to transmit the first signal, and the fourth communication device communicates with the second communication device through the first time-frequency resource.

19. The method of claim 17, wherein, The awareness policy type comprises the second policy type, a distance between the first communication device and a fourth communication device is less than or equal to a third threshold, wherein the fourth communication device communicates with the second communication device through the first time-frequency resource; and / or, The first communication device is located in a coverage range of a first beam, the fourth communication device communicates with the second communication device through a second beam, the second beam has an overlap with the coverage range of the first beam, or the second beam is the same as the first beam.

20. The method of any of claims 15-19, wherein, The method further comprises: Sending a downlink control information (DCI), wherein the DCI is used to schedule the third time-frequency resource.

21. The method of claim 20, wherein, The DCI is also used to schedule a fourth time-frequency resource, wherein a precoding codebook used by the fourth time-frequency resource is different from a precoding codebook used by the third time-frequency resource, and the fourth time-frequency resource is a time-frequency resource used by a fourth communication device to communicate with the second communication device.

22. A communications device, characterized by A module for executing the method of any one of claims 1 to 6, or a module for executing the method of any one of claims 7 to 14, or a module for executing the method of any one of claims 15 to 21.

23. A communications device, characterized by A computer program or instructions stored in a storage medium, which when executed by a communication device, implement the method of any one of claims 1 to 6, or implement the method of any one of claims 7 to 14, or implement the method of any one of claims 15 to 21.

24. A chip, characterized by A computer program or instructions stored in a storage medium, which when executed by a communication device, implement the method of any one of claims 1 to 6, or implement the method of any one of claims 7 to 14, or implement the method of any one of claims 15 to 21.

25. A computer-readable storage medium, characterized in that, The storage medium has stored therein a computer program or instructions, which when executed by a communication device, implement the method of any one of claims 1 to 6, or implement the method of any one of claims 7 to 14, or implement the method of any one of claims 15 to 21.

26. A computer program product comprising computer programs or instructions, characterized in that, The computer program or instructions, when executed by a communication device, implement the method of any one of claims 1 to 6, or implement the method of any one of claims 7 to 14, or implement the method of any one of claims 15 to 21.

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