An interference tracking method and device

Abstract

The present application discloses an interference tracking method and apparatus. A first terminal receives second information from a second network device on a first time-frequency resource, measures the interference from the second network device according to the second information, and feeds back the measured first interference information to a first network device. Since the second information is sent by the second network device (i.e., the interference source), this method enables the first terminal to measure the interference in a timely manner according to the change of the interference of the interference source, accurately track the change of the interference brought by the second network device, and report more accurate interference information to the first network device, so that the first network device can perform more accurate data scheduling and effectively improve the reliability of data transmission.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to an interference tracking method and apparatus. Background Art

[0002] The 5th generation (5G) mobile communication system has put forward higher requirements in terms of transmission rate, latency, and power consumption compared to previous generations of mobile communication systems. It is committed to achieving higher system performance, supporting multiple service types, different deployment scenarios, and a wider spectrum range. Among them, enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable and low-latency communications (URLLC) are the three typical application scenarios of the 5G communication system.

[0003] Among them, URLLC can be applied to industrial control, industrial production process automation, human-computer interaction, and remote medical applications, etc. The core indicators supporting these applications are reliability and latency. Therefore, compared with other application scenarios, URLLC puts forward higher requirements in terms of reliability and latency. For example, in industrial control, a typical requirement is to transmit a 32-byte data packet within 1 millisecond of latency, and the reliability reaches 99.999%.

[0004] Due to the requirements of high reliability and low latency of URLLC, there are few or even no retransmission opportunities for data transmission in the URLLC application scenario. Using the hybrid automatic repeat request (HARQ) technology to improve reliability has poor results. Therefore, for URLLC services, each data transmission must be very robust, such as using a lower code rate and a lower modulation order to reduce the probability of transmission errors. Further, due to the high reliability requirements of URLLC, the impact of random events (such as inter-cell interference) on communication performance is often very serious.

[0005] In order to overcome the impact of random events on data transmission, one approach in the prior art is to use a more robust transmission method, but this will result in a lower transmission efficiency of URLLC service data; another approach is to configure very dense measurement resources to measure inter-cell interference. Since too many time-frequency resources are used for channel / interference measurement, this will result in a relatively large overhead of measurement resources. Summary of the Invention

[0006] The present application provides an interference tracking method and apparatus, which are used to accurately track the change of inter-cell interference and improve the data transmission efficiency on the premise of ensuring the transmission reliability.

[0007] In a first aspect, the present application provides an interference tracking method, which can be executed by a first terminal or by a component (such as a chip or a circuit) configured in the first terminal.

[0008] The method may include: the first terminal receives first information from a first network device, and the first information indicates a first time-frequency resource; the first terminal receives second information from a second network device on the first time-frequency resource; the first terminal reports first interference information measured according to the second information to the first network device.

[0009] In the above technical solution, the first terminal can receive second information from the second network device on the first time-frequency resource, measure the interference from the second network device according to the second information, and report the measured first interference information to the first network device. Since the second information is sent by the second network device (i.e., the interference source), the method enables the first terminal to measure the interference in a timely and accurate manner according to the change of the interference of the interference source, better track the change of the interference brought by the second network device, and report more accurate interference information to the first network device, so that the first network device can also perform more accurate data scheduling and effectively improve the reliability of data transmission.

[0010] In a possible design of the first aspect, the second information indicates a second time-frequency resource for interference measurement, and the first interference information is measured on the second time-frequency resource.

[0011] In a possible design of the first aspect, the second information includes an index of the second time-frequency resource; or the second information includes an index of a first reporting configuration, and the first reporting configuration is associated with the second time-frequency resource; or the second information includes an index of a first measurement resource set, and the first measurement resource set includes the second time-frequency resource; or the second information is used to indicate the index of the second time-frequency resource, or the second information is used to indicate the index of the first reporting configuration, or the second information is used to indicate the index of the first measurement resource set.

[0012] In a possible design of the first aspect, the second time-frequency resource is an interference measurement resource corresponding to a first interference pattern of a second network device; the first terminal reports first interference information obtained by measurement to a first network device, and further includes the first terminal reporting one or more of the following information: an identifier of the first interference pattern, an index of the second time-frequency resource, an index of a first reporting configuration, and an index of a first measurement resource set; wherein the first reporting configuration is a reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource.

[0013] In the above technical solution, when the first terminal reports the first interference information, it may also report the identifier information of the first interference pattern corresponding to the first interference information, so that the first network device can identify, according to the identifier information of the first interference pattern, that the first terminal measures the interference under the first interference pattern of the second network device.

[0014] In a possible design of the first aspect, the second information further indicates a first time interval; the method further includes: the first terminal no longer detects, within the first time interval, indication information indicating measurement of interference from the second network device.

[0015] In the above technical solution, within the first time interval, the interference caused by the second network device may be unchanged. Therefore, by indicating the first time interval, the second network device indicates to the first terminal that it does not need to detect the indication information indicating measurement of interference, or does not need to measure interference, which can effectively save the resources (including computing resources and energy) of the first terminal.

[0016] In a possible design of the first aspect, the second information further indicates a third time-frequency resource, and the third time-frequency resource is an interference measurement resource corresponding to a second interference pattern of the second network device; the first terminal reports the first interference information obtained by measurement to the first network device, and further includes: the first terminal reports second interference information obtained by measurement on the third time-frequency resource to the first network device.

[0017] In the above technical solution, if the interference caused by the second network device is uncertain (for example, it may be multiple interference patterns or a combination of multiple interference patterns), or the second network device has multiple interference patterns, the second network device may indicate the interference measurement resources corresponding to the multiple interference patterns in the second information, so that the first terminal can measure the interference under the multiple interference patterns respectively and report it, so that the first network device can accurately determine the interference caused by the second network device to the first terminal.

[0018] In a possible design of the first aspect, the first interference information is sent to the first network device in a first measurement report; the first measurement report further includes first indication information that indicates a second network device; or, the first measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0019] In a second aspect, the present application provides an interference tracking method, which can be executed by a second network device or by components (such as chips or circuits) configured in the second network device.

[0020] The method may include: the second network device receives third information from the first network device, and the third information indicates a first time-frequency resource; the second network device sends second information to a first terminal on the first time-frequency resource, and the second information is used for the first terminal to measure interference.

[0021] In a possible design of the second aspect, the second information indicates a second time-frequency resource, and the second time-frequency resource is an interference measurement resource corresponding to a first interference pattern of the second network device.

[0022] In a possible design of the second aspect, the second information includes an index of the second time-frequency resource; or, the second information includes an index of a first reporting configuration that is associated with the second time-frequency resource; or, the second information includes an index of a first measurement resource set that includes the second time-frequency resource; or the second information is used to indicate the index of the second time-frequency resource, or the second information is used to indicate the index of the first reporting configuration, or the second information is used to indicate the index of the first measurement resource set.

[0023] In a possible design of the second aspect, the second information further indicates a first time interval, and the first time interval is a time interval during which the first terminal does not need to detect indication information for indicating measurement of interference from the second network device.

[0024] In a possible design of the second aspect, the second information further indicates a third time-frequency resource, and the third time-frequency resource is an interference measurement resource corresponding to a second interference pattern of the second network device.

[0025] For the beneficial effects in the second aspect and various possible designs of the second aspect, reference may be made to the corresponding descriptions in the first aspect, and details are not repeated here.

[0026] In a third aspect, the present application provides an interference tracking method, which can be executed by a first network device or by components (such as chips or circuits) configured in the first network device.

[0027] The method may include: a first network device sending first information to a first terminal, where the first information indicates a first time-frequency resource; the first network device sending third information to a second network device, where the third information indicates the first time-frequency resource; the first network device receiving first interference information reported by the first terminal, where the first interference information is obtained by the first terminal measuring interference based on second information received from the second network device on the first time-frequency resource.

[0028] In a possible design of the third aspect, the first interference information is measured by the first terminal on a second time-frequency resource, where the second time-frequency resource is an interference measurement resource corresponding to a first interference pattern of the second network device; the first network device receiving the first interference information reported by the first terminal further includes the first network device receiving one or more of the following information: an identifier of the first interference pattern, an index of the second time-frequency resource, an index of a first reporting configuration, and an index of a first measurement resource set; where the first reporting configuration is a reporting configuration corresponding to the first interference pattern, the first reporting configuration is associated with the second time-frequency resource, and the first measurement resource set includes the second time-frequency resource.

[0029] In a possible design of the third aspect, the method further includes: the first network device receiving second interference information reported by the first terminal, where the second interference information is obtained by the first terminal measuring interference based on the second information on a third time-frequency resource, and the third time-frequency resource is an interference measurement resource corresponding to a second interference pattern of the second network device.

[0030] In a possible design of the third aspect, the first network device receiving the first interference information reported by the first terminal includes: the first network device receiving a first measurement report from the first terminal, where the first measurement report includes the first interference information; where the first measurement report further includes first indication information, and the first indication information indicates the second network device; or the first measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0031] For the beneficial effects in the third aspect and various possible designs of the third aspect, reference may be made to the corresponding descriptions in the first aspect and will not be elaborated here.

[0032] In a fourth aspect, the present application provides an interference tracking method, which can be executed by a first terminal or by a component (such as a chip or a circuit) configured in the first terminal.

[0033] The method may include: a first terminal receiving ninth information from a second network device, where the ninth information indicates one or more of the following information: a seventh time-frequency resource, a first precoding matrix, and a first transmit power; wherein, the seventh time-frequency resource is a time-frequency resource scheduled by the second network device for a second terminal, the first precoding matrix is a precoding matrix used for signal transmission and reception between the second network device and the second terminal, and the first transmit power is the transmit power used for signal transmission and reception between the second network device and the second terminal; the first terminal reporting fourth interference information obtained according to the ninth information to a first network device.

[0034] In the above technical solution, the first terminal can determine interference according to the information indicating the interference pattern sent by the second network device and report it to the first network device. In this way, when the channel between the second network device and the first terminal changes slowly, the first terminal does not need to frequently measure interference. The second network device only needs to notify the first terminal when the interference pattern changes, and the first terminal obtains the interference according to the ninth information. In this way, the first terminal can accurately track the interference brought by the second network device, and at the same time can effectively reduce the power consumption of the terminal, saving resources and energy.

[0035] In a possible design of the fourth aspect, the method further includes: the first terminal receiving seventh information from the first network device, where the seventh information indicates a sixth time-frequency resource; the first terminal receiving the ninth information from the second network device includes: the first terminal receiving the ninth information on the sixth time-frequency resource.

[0036] In a possible design of the fourth aspect, the ninth information is used to determine interference of a third interference pattern from the second network device; the first terminal reporting the fourth interference information obtained according to the ninth information to the first network device further includes: the first terminal reporting an identifier of the third interference pattern and / or indication information of the seventh time-frequency resource.

[0037] In the above technical solution, when reporting the fourth interference information, the first terminal may also report the identifier information of the third interference pattern corresponding to the fourth interference information, such as the identifier of the third interference pattern and / or the indication information of the seventh time-frequency resource, so that the first network device can identify, according to the identifier information of the third interference pattern, that the interference determined by the first terminal is the interference under the third interference pattern of the second network device.

[0038] In a possible design of the fourth aspect, the method further includes: The first terminal receives, on a sixth time-frequency resource, tenth information from a second network device, where the tenth information indicates one or more of the following information: an eighth time-frequency resource, a second precoding matrix, and a second transmit power; where the eighth time-frequency resource is another time-frequency resource scheduled by the second network device for a second terminal, the second precoding matrix is another precoding matrix used for signal transmission and reception between the second network device and the second terminal, the second transmit power is another transmit power used for signal transmission and reception between the second network device and the second terminal, and the tenth information is used to determine interference of a fourth interference pattern from the second network device; The first terminal reports fifth interference information obtained according to the tenth information to a first network device.

[0039] In the above technical solution, if the interference caused by the second network device is uncertain (for example, it may be multiple interference patterns or a combination of multiple interference patterns), or the second network device has multiple interference patterns, the second network device may send multiple pieces of information respectively indicating their respective interference patterns on the sixth time-frequency resource, so that the first terminal can respectively determine the interference under the multiple interference patterns according to the multiple pieces of interference pattern information and report it, so as to accurately determine the interference caused by the second network device.

[0040] In a possible design of the fourth aspect, the method further includes: The first terminal receives, on a sixth time-frequency resource, eleventh information from a second network device, where the eleventh information indicates a third time interval, and the third time interval is a time interval during which the first terminal does not need to detect information indicating an interference pattern from the second network device, and the information indicating the interference pattern is specifically used to indicate one or more of the time-frequency resource scheduled by the second network device, the precoding matrix used, and the transmit power of the signal used.

[0041] In the above technical solution, within the third time interval, the interference pattern of the second network device may be unchanged. Therefore, the second network device can indicate, through the eleventh information, the time interval during which the first terminal does not need to detect the information indicating the interference pattern, or it can also be understood as indicating the time interval during which the terminal does not need to determine / report interference, thereby effectively saving resources (including computing resources and energy) of the first terminal.

[0042] In a possible design of the fourth aspect, the fourth interference information is sent to the first network device included in a second measurement report; the second measurement report further includes first indication information, where the first indication information indicates the second network device; or, the second measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0043] In a fifth aspect, the present application provides an interference tracking method, which can be executed by a second network device or by a component (such as a chip or a circuit) configured in the second network device.

[0044] The method may include: the second network device receives eighth information from the first network device, and the eighth information indicates a sixth time-frequency resource; the second network device sends ninth information on the sixth time-frequency resource, and the ninth information indicates one or more of the following information: a seventh time-frequency resource, a first precoding matrix, and a first transmit power; wherein, the seventh time-frequency resource is the time-frequency resource scheduled by the second network device for a second terminal, the first precoding matrix is the precoding matrix used for signal transmission and reception between the second network device and the second terminal, and the first transmit power is the transmit power used for signal transmission and reception between the second network device and the second terminal.

[0045] In a possible design of the fifth aspect, the ninth information is used for a first terminal to determine interference of a third interference pattern from the second network device.

[0046] In a possible design of the fifth aspect, the method further includes: the second network device sends tenth information on the sixth time-frequency resource, and the tenth information indicates one or more of the following information: an eighth time-frequency resource, a second precoding matrix, and a second transmit power; wherein, the eighth time-frequency resource is another time-frequency resource scheduled by the second network device for the second terminal, the second precoding matrix is another precoding matrix used for signal transmission and reception between the second network device and the second terminal, the second transmit power is another transmit power used for signal transmission and reception between the second network device and the second terminal, and the tenth information is used to determine interference of a fourth interference pattern from the second network device.

[0047] In a possible design of the fifth aspect, the method further includes: the second network device sends eleventh information on the sixth time-frequency resource, and the eleventh information indicates a third time interval, and the third time interval is a time interval during which the first terminal does not need to detect information indicating an interference pattern from the second network device, and the information indicating the interference pattern is specifically used to indicate one or more of the time-frequency resource scheduled by the second network device, the precoding matrix used, and the transmit power of the signal used.

[0048] For the beneficial effects in the fifth aspect and various possible designs of the fifth aspect, reference may be made to the corresponding descriptions in the fourth aspect, and details are not repeated here.

[0049] In a sixth aspect, the present application provides an interference tracking method, which can be executed by a first network device or by a component (such as a chip or a circuit) configured in the first network device.

[0050] The method may include: a first network device sending seventh information to a first terminal, where the seventh information indicates a sixth time-frequency resource; the first network device sending the seventh information to a second network device; the first network device receiving fourth interference information reported by the first terminal.

[0051] In a possible design of the sixth aspect, the fourth interference information is interference information of a third interference pattern from the second network device determined by the first terminal; the first network device receiving the fourth interference information reported by the first terminal further includes the first network device receiving an identifier of the third interference pattern and / or indication information of a seventh time-frequency resource reported by the first terminal.

[0052] In a possible design of the sixth aspect, the method further includes: the first network device receiving fifth interference information reported by the first terminal, where the fifth interference information is interference information of a fourth interference pattern from the second network device determined by the first terminal.

[0053] In a possible design of the sixth aspect, the first network device receiving the fourth interference information reported by the first terminal includes: the first network device receiving a second measurement report from the first terminal, where the second measurement report includes the fourth interference information; where the second measurement report further includes first indication information indicating the second network device; or the second measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0054] In a possible design of the sixth aspect, the method further includes: the first network device receiving sixth interference information reported by the first terminal, where the sixth interference information is interference information from a third network device determined by the first terminal.

[0055] For the beneficial effects in the sixth aspect and various possible designs of the sixth aspect, reference may be made to the corresponding descriptions in the fourth aspect, and details are not repeated here.

[0056] In a seventh aspect, the present application provides an interference tracking method, which may be executed by a first terminal or by components (such as chips or circuits) configured in the first terminal.

[0057] The method may include: the first terminal receiving fifteenth information from a first network device, where the fifteenth information indicates an eleventh time-frequency resource; the first terminal receiving a first reference signal on the eleventh time-frequency resource; the first terminal reporting seventh interference information measured according to the first reference signal to the first network device.

[0058] In a possible design of the seventh aspect, the first reference signal comes from the second network device.

[0059] In the above technical solution, the first terminal can measure the interference from the second network device based on the received first reference signal from the second network device and report it to the first network device. In this way, the first terminal can accurately determine the interference caused by the second network device and report accurate interference information to the first network device, so that the first network device can perform more accurate data scheduling and effectively improve the reliability of data transmission.

[0060] In a possible design of the seventh aspect, the eleventh time-frequency resource includes N PRBs configured discretely, where N is a positive integer.

[0061] In the above technical solution, the first network device is allowed to configure discrete interference measurement resources in the frequency domain for the first terminal according to actual requirements (such as the specific location of the frequency-domain resources scheduled by the second network device for data transmission), thereby effectively saving resource overhead.

[0062] In a possible design of the seventh aspect, the method further includes: the first terminal receives the seventeenth information from the first network device or the second network device, where the seventeenth information indicates the size of the sub-band in the eleventh time-frequency resource, and the size of the sub-band is related to the scheduling granularity of the second network device; the first terminal reports the seventh interference information measured based on the first reference signal to the first network device, including: the first terminal measures the seventh interference information corresponding to at least one sub-band according to the first reference signal received on at least one sub-band in the eleventh time-frequency resource, and reports the seventh interference information corresponding to the at least one sub-band to the first network device.

[0063] In the above technical solution, the feedback granularity of the first terminal can also be determined according to the granularity of the frequency-domain resources scheduled by the second network device for data transmission, so that the first terminal can more accurately feedback the interference caused by the second network device.

[0064] In a possible design of the seventh aspect, the fifteenth information may further indicate whether to perform precoding on the first reference signal, so that the first terminal can report interference information or channel information according to whether the first reference signal has been precoded.

[0065] In a possible design of the seventh aspect, the first reference signal corresponds to the fifth interference pattern of the second network device; the method further includes: the first terminal receives the second reference signal from the second network device, where the second reference signal corresponds to the sixth interference pattern of the second network device; the first terminal reports the eighth interference information measured based on the second reference signal to the first network device.

[0066] In the above technical solution, if the interference caused by the second network device is uncertain (for example, it may be multiple interference patterns or a combination of multiple interference patterns), or the second network device has multiple interference patterns, the second network device may send multiple reference signals to the first terminal, so that the first terminal can receive the multiple reference signals, measure the interference under the multiple interference patterns respectively and report it, so as to accurately determine the interference caused by the second network device.

[0067] In a possible design of the seventh aspect, the time-frequency resources where the first reference signal is located are different from the time-frequency resources where the second reference signal is located; and / or, the transmission sequence of the first reference signal is different from the transmission sequence of the second reference signal.

[0068] In a possible design of the seventh aspect, the seventh interference information is sent to the first network device in the third measurement report; wherein, the third measurement report further includes first indication information, and the first indication information indicates the second network device; or, the third measurement report is sent at a first moment, and the first moment is the interference reporting moment associated with the second network device.

[0069] In an eighth aspect, the present application provides an interference tracking method, which can be executed by the second network device or by a component (such as a chip or a circuit) configured in the second network device.

[0070] The method may include: the second network device receives fifteenth information from the first network device, and the fifteenth information indicates the eleventh time-frequency resource; the second network device sends a first reference signal on the eleventh time-frequency resource, and the first reference signal is used for the first terminal to measure the interference from the second network device.

[0071] In a possible design of the eighth aspect, the eleventh time-frequency resource includes N discrete PRBs, and N is a positive integer.

[0072] In a possible design of the eighth aspect, the method further includes: the second network device sends seventeenth information to the first terminal, and the seventeenth information indicates the size of the sub-band in the eleventh time-frequency resource, and the size of the sub-band is related to the scheduling granularity of the second network device.

[0073] In a possible design of the eighth aspect, the fifteenth information further indicates whether to perform precoding on the first reference signal.

[0074] In a possible design of the eighth aspect, the first reference signal corresponds to the fifth interference pattern of the second network device; the method further includes: the second network device sends a second reference signal, and the second reference signal corresponds to the sixth interference pattern of the second network device.

[0075] In a possible design of the eighth aspect, the time-frequency resources where the first reference signal is located are different from the time-frequency resources where the second reference signal is located; and / or, the transmission sequence of the first reference signal is different from the transmission sequence of the second reference signal.

[0076] For the beneficial effects in the eighth aspect and various possible designs of the eighth aspect, reference may be made to the corresponding descriptions in the seventh aspect, which will not be elaborated here.

[0077] In a ninth aspect, the present application provides an interference tracking method, which can be executed by a first network device or by a component (such as a chip or a circuit) configured in the first network device.

[0078] The method may include: the first network device sends fifteenth information to a first terminal, and the fifteenth information indicates an eleventh time-frequency resource; the first network device sends sixteenth information to a second network device, and the sixteenth information indicates the eleventh time-frequency resource; the first network device receives seventh interference information from the first terminal, and the seventh interference information is measured by the first terminal according to a first reference signal received from the second network device on the eleventh time-frequency resource.

[0079] In a possible design of the ninth aspect, the first time-frequency resource includes N PRBs configured discretely, where N is a positive integer.

[0080] In a possible design of the ninth aspect, the method further includes: the first network device sends seventeenth information to the first terminal, and the seventeenth information indicates the size of a sub-band in the eleventh time-frequency resource, and the size of the sub-band is related to the scheduling granularity of the second network device; the first network device receiving the seventh interference information from the first terminal includes: the first network device receives seventh interference information corresponding to at least one sub-band in the eleventh time-frequency resource from the first terminal, and the seventh interference information corresponding to the at least one sub-band is measured according to the first reference signal received on the at least one sub-band.

[0081] In a possible design of the ninth aspect, the fifteenth information further indicates whether precoding is performed on the first reference signal.

[0082] In a possible design of the ninth aspect, the first reference signal corresponds to a fourth interference pattern of the second network device; the method further includes: the first network device receives eighth interference information from the first terminal, and the eighth interference information is measured by the first terminal according to a second reference signal received from the second network device, and the second reference signal corresponds to a fifth interference pattern of the second network device.

[0083] In a possible design of the ninth aspect, the time-frequency resources where the first reference signal is located are different from the time-frequency resources where the second reference signal is located; and / or, the transmission sequence of the first reference signal is different from the transmission sequence of the second reference signal.

[0084] In a possible design of the ninth aspect, the first network device receives seventh interference information from a first terminal, including: the first network device receives a third measurement report from the first terminal, and the third measurement report includes the seventh interference information; wherein, the third measurement report further includes first indication information, and the first indication information indicates a second network device; or, the third measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0085] For the beneficial effects in the ninth aspect and various possible designs of the ninth aspect, reference may be made to the corresponding descriptions in the seventh aspect, and details are not repeated here.

[0086] In the tenth aspect, the present application provides an interference tracking method, which can be executed by a first terminal or by a component (such as a chip or a circuit) configured in the first terminal.

[0087] The method may include: the first terminal receives nineteenth information from a first network device, and the nineteenth information indicates fourteenth time-frequency resources; the first terminal sends a fourth reference signal on the fourteenth time-frequency resources, and the fourth reference signal is used for channel measurement.

[0088] In the above technical solution, the first terminal may also send a fourth reference signal for channel measurement. The second network device performs channel measurement according to the received fourth reference signal, and sends the measured channel information and information indicating an interference pattern to the first network device. The first network device determines the interference brought by the second network device to the first terminal according to the channel information and the information indicating the interference pattern. This method can not only accurately determine the interference brought by the second network device to the second terminal, but also effectively reduce the resource overhead on the air interface.

[0089] In a possible design of the tenth aspect, the fourteenth time-frequency resources include N discrete PRBs, and N is a positive integer.

[0090] In the above technical solution, the first network device is allowed to configure discrete frequency-domain resources for sending reference signals for the first terminal according to actual requirements (such as the specific location of the frequency-domain resources scheduled by the second network device for data transmission), thereby effectively saving resource overhead.

[0091] In the eleventh aspect, the present application provides an interference tracking method, which can be executed by a second network device or by a component (such as a chip or a circuit) configured in the second network device.

[0092] The method may include: a second network device receiving twentieth information from a first network device, where the twentieth information is used to indicate a fourteenth time-frequency resource; the second network device receiving a fourth reference signal from a first terminal on the fourteenth time-frequency resource; the second network device sending channel information obtained by performing channel measurement according to the fourth reference signal and twenty-first information to the first network device, where the twenty-first information indicates one or more of the following information: a fifteenth time-frequency resource, a fourth precoding matrix, and a fourth transmit power, the fifteenth time-frequency resource being a time-frequency resource scheduled by the second network device for a second terminal, the fourth precoding matrix being a coding matrix used by the second network device for data transmission with the second terminal, and the fourth transmit power being a transmit power used by the second network device to send a signal to the second terminal.

[0093] In a possible design of the eleventh aspect, the fourteenth time-frequency resource includes N PRBs configured discretely, where N is a positive integer.

[0094] For the beneficial effects in the eleventh aspect and various possible designs of the eleventh aspect, reference may be made to the corresponding descriptions in the tenth aspect, which will not be elaborated herein.

[0095] In a twelfth aspect, the present application provides an interference tracking method, which may be executed by a first network device or by a component (such as a chip or a circuit) configured in the first network device.

[0096] The method may include: the first network device sending nineteenth information to a first terminal, where the nineteenth information indicates a fourteenth time-frequency resource, and the fourteenth time-frequency resource is used for the first terminal to send a fourth reference signal; the first network device sending twentieth information to a second network device, where the twentieth information indicates the fourteenth time-frequency resource; the first network device receiving channel information and twenty-first information from the second network device, where the channel information is obtained by the second network device performing channel measurement according to the fourth reference signal, and the twenty-first information indicates one or more of the following information: a fifteenth time-frequency resource, a fourth precoding matrix, and a fourth transmit power, the fifteenth time-frequency resource being a time-frequency resource scheduled by the second network device for a second terminal, the fourth precoding matrix being a precoding matrix used by the second network device for data transmission with the second terminal, and the fourth transmit power being a transmit power used by the second network device to send a signal to the second terminal; the first network device scheduling the first terminal according to the channel information and the twenty-first information.

[0097] In a possible design of the twelfth aspect, the fourteenth time-frequency resource includes N PRBs configured discretely, where N is a positive integer.

[0098] For the beneficial effects of the twelfth aspect and various possible designs of the twelfth aspect, reference may be made to the corresponding descriptions in the tenth aspect, which will not be elaborated here.

[0099] In a thirteenth aspect, the present application provides a communication device. An embodiment of the present application provides a communication device, which has the functions of the first terminal in the above aspects. The device can be a terminal or a chip included in the terminal.

[0100] The communication device may also have the functions of the first network device in the above aspects, or have the functions of the second network device in the above aspects. The device can be a network device or a chip included in the network device.

[0101] The functions of the above communication device can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules, units, or means corresponding to the above functions.

[0102] In a possible design, the structure of the device includes a processing module and a transceiver module. Among them, the processing module is configured to support the device to execute the corresponding functions of the first terminal in the above aspects, or execute the corresponding functions of the second network device in the above aspects, or execute the corresponding functions of the first network device in the above aspects. The transceiver module is used to support the communication between the device and other communication devices. For example, when the device is the first terminal, it can receive the first information from the first network device. The communication device may further include a storage module, which is coupled to the processing module and stores necessary program instructions and data of the device. As an example, the processing module can be a processor, the communication module can be a transceiver, and the storage module can be a memory. The memory can be integrated with the processor or separated from the processor.

[0103] In another possible design, the structure of the device includes a processor and may further include a memory. The processor is coupled to the memory and can be used to execute computer program instructions stored in the memory to enable the device to execute the methods in the above aspects. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface. When the device is the first terminal or the first network device or the second network device, the communication interface can be a transceiver or an input / output interface; when the device is a chip included in the terminal or a chip included in the first network device or a chip included in the second network device, the communication interface can be the input / output interface of the chip. Optionally, the transceiver can be a transceiver circuit, and the input / output interface can be an input / output circuit.

[0104] In a fourteenth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the chip system implements the methods in the above aspects.

[0105] Optionally, the chip system further includes an interface circuit, and the interface circuit is used to interact code instructions to the processor.

[0106] Optionally, the processor in the chip system can be one or more, and the processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor, which is implemented by reading software code stored in the memory.

[0107] Optionally, the memory in the chip system can also be one or more. The memory can be integrated with the processor or can be separately arranged from the processor. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip or can be separately arranged on different chips.

[0108] In a fifteenth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program or instruction is stored. When the computer program or instruction is executed, a communication device is enabled to execute the methods in the above aspects.

[0109] In a sixteenth aspect, an embodiment of the present application provides a computer program product. When a communication device executes the computer program product, the communication device is enabled to execute the methods in the above aspects or any possible design in the above aspects.

[0110] In a seventeenth aspect, an embodiment of the present application provides a communication system, which includes a first network device, a second network device, and a first terminal. Optionally, the communication system may further include a third network device. Optionally, the communication system may further include a core network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0111] Figure 1 It is a schematic diagram of the system architecture applicable to the embodiments of the present application;

[0112] Figure 2 It is a schematic diagram of the scenario of inter-cell interference measurement applicable to the embodiments of the present application;

[0113] Figure 3 It is a schematic diagram of downlink channel / interference measurement and reporting in the embodiments of the present application;

[0114] Figure 4Schematic flowchart of an interference tracking method provided by an embodiment of the present application;

[0115] Figure 5 Schematic diagram of periodic first time-frequency resources in an embodiment of the present application;

[0116] Figure 6 Schematic diagram of a first time interval in an embodiment of the present application;

[0117] Figure 7 Schematic diagram of interference measurement when a first terminal does not distinguish interference sources in an embodiment of the present application;

[0118] Figure 8 Schematic flowchart of another interference tracking method provided by an embodiment of the present application;

[0119] Figure 9 Schematic diagram of the position where a terminal measures an interference channel in another interference tracking method provided by an embodiment of the present application;

[0120] Figure 10 Schematic flowchart of yet another interference tracking method provided by an embodiment of the present application;

[0121] Figure 11 Schematic diagram of the eleventh time-frequency resources discretely configured in the frequency domain in an embodiment of the present application;

[0122] Figure 12 Schematic flowchart of yet another interference tracking method provided by an embodiment of the present application;

[0123] Figure 13 Schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0124] Figure 14 Another schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0125] Figure 15 Another schematic diagram of the structure of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0126] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0127] The technical solution of the embodiment of the present application can be applied to various communication systems, such as Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), 5th generation (5G) mobile communication systems, or New Radio (NR) systems, or applied to future communication systems or other similar communication systems, etc.

[0128] Please refer to Figure 1 , which is a schematic diagram of the network architecture of a communication system provided by the present application. This communication system includes a core network device 110, a radio access network device 120, and at least one terminal (such as Figure 1 the terminal 130 and terminal 140). The terminal is connected to the radio access network device wirelessly, and the radio access network device is connected to the core network device wirelessly or wired. The core network device and the radio access network device can be independent different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or the functions of part of the core network device and part of the radio access network device can be integrated on one physical device. The terminal can be fixed in position or movable. Figure 1 This is just a schematic diagram, and other network devices can also be included in this communication system. For example, wireless relay devices and wireless backhaul devices can also be included, which are not drawn in Figure 1 . The embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminals included in this communication system.

[0129] It should be understood that the radio access network device mentioned in the embodiments of the present application can correspond to different devices in different communication systems. For example, in a 5G system, it corresponds to the access network device in 5G, such as a gNB or an ng-eNB, and in a 4G system, it corresponds to the access network device in 4G, such as an eNB or an en-gNB.

[0130] The radio access network device and the terminal can communicate through authorized spectrum, or through unlicensed spectrum, or through both authorized spectrum and unlicensed spectrum at the same time. The network device and the terminal can communicate through spectrum below 6 gigahertz (GHz), or through spectrum above 6 GHz, or use both spectrum below 6 GHz and spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal.

[0131] It should be noted that the network architecture and service scenarios described in the embodiments of this application are for more clearly explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art know that with the evolution of communication network architectures and the emergence of new service scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0132] The following explains some terms in the embodiments of this application to facilitate the understanding of those skilled in the art.

[0133] 1) The terminal involved in the embodiments of this application is a device with wireless transceiver functions. The terminal is connected to a radio access network device wirelessly, thereby accessing the communication system. The terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver functions, a virtual reality terminal, an augmented reality terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and so on. The embodiments of this application do not limit the specific technologies and specific device forms adopted by the terminal.

[0134] As an example rather than a limitation, the terminal can also be a wearable device. A wearable device can also be referred to as a wearable intelligent device or a smart wearable device, etc. It is the general term for devices developed by applying wearable technologies to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is either directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart helmets, and smart jewelry.

[0135] The terminal can also be an in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the method of this application through the built-in in-vehicle module, in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0136] 2) In the embodiments of this application, the radio access network device involved is a device in the network used to connect a terminal to a wireless network device. The radio access network device is a node in the radio access network, and can also be referred to as a base station, or as a RAN node (or device). In this application, the radio access network device can be simply referred to as a network device. Unless otherwise specified, the network device in the following text refers to the radio access network device. The radio access network device can be a base station, an evolved NodeB (eNodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-A), a next generation NodeB (gNB) in a 5G communication system, a transmission reception point (TRP), a base band unit (BBU), a WiFi access point (AP), a base station in a future mobile communication system, or an access node in a WiFi system, etc. The radio access network device can also be a module or unit that completes some functions of the base station. For example, it can be a central unit (CU), or a distributed unit (DU). The embodiments of this application do not limit the specific technologies and specific device forms adopted by the radio access network device.

[0137] For example, in a network structure, the radio access network device can be a CU node, or a DU node, or an access network device including a CU node and a DU node. Specifically, the CU node is used to support protocols such as radio resource control (RRC), packet data convergence protocol (PDCP), and service data adaptation protocol (SDAP); the DU node is used to support the radio link control (RLC) layer protocol, the medium access control (MAC) layer protocol, and the physical layer protocol.

[0138] In the embodiments of this application, the radio access network device and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; or they can be deployed on airplanes, balloons, and artificial satellites in the air. The embodiments of this application do not limit the application scenarios of the network device and the terminal.

[0139] It should be noted that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more. In view of this, in the embodiments of the present application, "multiple" can also be understood as "at least two". "At least one" can be understood as one or more, for example, understood as one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, including at least one of A, B, and C, then what is included can be A, B, C, A and B, A and C, B and C, or A, B, and C. Similarly, the understanding of descriptions such as "at least one kind" is similar. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / ", unless otherwise specified, generally represents an "or" relationship between the associated objects before and after.

[0140] Unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, time sequence, priority or importance of multiple objects, and the descriptions of "first" and "second" do not necessarily limit that the objects are different.

[0141] The embodiments of the present application are applicable to the scenario of inter-cell interference measurement. As Figure 2 shown, a communication system includes a target network device, an interfering network device, and a terminal. It should be noted that Figure 2 only as an example, the embodiments of the present application do not limit the number of interfering network devices included in the communication system.

[0142] Among them, the target network device refers to the network device accessed by the terminal, and can also be called the serving network device, or simply referred to as the target station or serving station. The terminal can communicate with the target network device. For example, it can receive control information and data information from the target network device, or can also send data information to the target network device.

[0143] The interfering network device refers to a network device that causes interference to the terminal or the target network device, and can also be simply referred to as an interference source. The signal sent by the target network device may cause interference to the transmission / reception of the terminal or the target network device. Therefore, the terminal can measure the interference caused by the interfering network device and report the measured interference to the target network device, or the target network device can also obtain the interference caused by the interfering network device through the interaction with the interfering network device.

[0144] For the NR system, the channel or interference can be measured by transmitting a reference signal (RS) of a known sequence. Specifically, the interference of the downlink channel is measured by the channel state information-reference signal (CSI-RS), and the interference of the uplink channel is measured by the sounding reference signal (SRS). For the TDD system, the channel state can also be obtained by utilizing the reciprocity of the uplink and downlink channels.

[0145] The measurement of downlink interference / channel and uplink interference / channel in the NR system will be introduced in detail below.

[0146] 1) Measurement and feedback of downlink channel / interference

[0147] The downlink channel is generally measured by CSI-RS. The CSI-RS is sent by the base station and measured by the UE. Specifically, the base station sends the CSI-RS for measuring the channel and interference. After receiving the CSI-RS, the UE calculates the metrics to be measured, such as the rank indicator (RI), pre-coding matrix indicator (PMI), channel quantity indicator (CQI), etc., and then reports these contents.

[0148] The two most important parts of CSI-RS configuration are the CSI-RS reporting configuration (ReportConfig) and the CSI-RS resource configuration (ResourceConfig). Among them, the reporting configuration is used to configure the parameters related to channel reporting, such as the reporting type, the measured metrics to be reported, etc., while the resource configuration is used to configure the relevant information of the time-frequency resources for measurement.

[0149] The reporting types of the channel state can be divided into three types, namely P-CSI, SP-CSI, and A-CSI. As Figure 3 shown, P-CSI is configured by RRC signaling, and after configuration, it is sent periodically without triggering; SP-CSI is triggered by the medium access control-control element (MAC CE) or downlink control information (DCI) after RRC signaling configuration, and after triggering, it is sent periodically; A-CSI is triggered by DCI after RRC signaling configuration, and after triggering, it is reported only once on the specified PUSCH within the specified time slot.

[0150] The reporting of channel state also supports wideband feedback and narrowband feedback. Wideband feedback means that only one value is reported within the entire reporting bandwidth, while narrowband feedback means that each subband within the reporting bandwidth is reported separately. The size of the subband is shown in Table 1 below. For a fixed bandwidth part (BWP), the number of physical resource blocks (PRBs) included in each subband is fixed. For example, if a BWP contains 50 PRBs, the size of its subband can be 4 or 8, and which one it is can be specified by higher layer signaling.

[0151] Narrowband feedback can also be discrete or continuous. The following examples illustrate the meanings of discrete and continuous narrowband feedback. Suppose there are 10 resource blocks (RBs) in the BWP, and the size of each subband is 2 RBs, that is, the BWP will be divided into 5 subbands, labeled with numbers 1, 2, 3, 4, and 5 respectively. Continuous feedback specifically means that the reported subbands are continuous. For example, reporting the channel state information on subbands 1, 2, 3, or reporting the channel state information on subbands 3, 4, 5. Discrete feedback means that the reported subbands are discrete. For example, reporting the channel state information on subbands 1, 2, 4.

[0152] Partial Bandwidth (PRBs) Sub-band Size (PRBs) <24 N / A 24–72 4,8 73–144 8,16 145–275 16,32

[0153] Table 1 Relationship between bandwidth part and subband size

[0154] The measurement resources of CSI-RS can also be configured in three ways: periodic, semi-persistent, and aperiodic. There is a certain relationship between the reporting type of channel state and the configuration method of its corresponding measurement resources, as shown in Table 2 below. It can be seen from Table 2 that for the configured periodic measurement resources, P-CSI reporting, SP-CSI reporting, and A-CSI reporting are supported, while for the configured aperiodic measurement resources, only A-CSI reporting is supported.

[0155] CSI-RS Resource P-CSI SP-CSI A-CSI Periodic Supported Supported Supported Semi-persistent Not Supported Supported Supported Aperiodic Not Supported Not Supported Supported

[0156] Table 2 Relationship between CSI-RS measurement resources and reporting types

[0157] Functionally, the measurement resources of CSI-RS can be divided into three types: NZP-CSI-RS for channel, ZP-CSI-RS for interference, and NZP-CSI-RS for interference.

[0158] Among them, NZP-CSI-RS for channel refers to the non-zero power-channel state information-reference signal (NZP-CSI-RS) for channel measurement. According to the prior art, the resource configuration of this type is mandatory. ZP-CSI-RS for channel refers to the zero power-channel state information-reference signal (ZP-CSI-RS) for interference measurement. According to the prior art, the resource configuration of this type is optional. If the resources of this type are configured, the resources in this resource set correspond one by one to the resources in the NZP-CSI-RS for channel resource set. NZP-CSI-RS for interference refers to the NZP-CSI-RS for interference measurement. According to the prior art, the resource configuration of this type is optional.

[0159] According to the above content, it can be known that ZP-CSI-RS cannot be configured alone for interference measurement. It is necessary to combine it with NZP-CSI-RS for channel that corresponds one by one to its resources to complete the measurement.

[0160] It should be noted that the essential meaning of ZP-CSI-RS is that on the resources of the configured ZP-CSI-RS, the target base station does not send any information. It is precisely because the target base station does not send any information that the UE detects on these resources, and the detected signal is interference. The difference between NZP-CSI-RS and ZP-CSI-RS is that for NZP-CSI-RS, the target base station will send a known sequence on the resources of the configured NZP-CSI-RS. By sending the known sequence, the UE can measure the channel / interference.

[0161] 2) Measurement and feedback of uplink channel / interference:

[0162] The uplink channel is generally measured through SRS. SRS is sent by the UE and measured by the base station to obtain the channel / interference information of the uplink transmission.

[0163] SRS can also be divided into periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), and aperiodic SRS (A-SRS). Among them, the transmission of P-SRS is configured through RRC signaling, and after configuration, it is sent every fixed period; the transmission of SP-SRS is triggered by MAC CE after RRC signaling configuration, and after triggering, it is also sent every fixed period; the transmission of A-SRS is triggered by DCI after RRC signaling configuration, and after triggering, the specified SRS is sent within the specified time slot.

[0164] One UE can be configured with multiple SRS transmissions. Generally speaking, different SRS transmissions cannot be sent simultaneously. For one SRS, in the time domain, it is in the last few symbols (at most the last 6) of a time slot, and its position in the frequency domain is configurable, which can be wideband or narrowband. At the same time, SRS supports frequency hopping transmission, that is, the same SRS can occupy different frequency band resources at different transmission occasions.

[0165] Embodiment 1

[0166] Please refer to Figure 4 , which is a schematic flow diagram of an interference tracking method provided by an embodiment of this application. The method includes:

[0167] Step S401, the first network device sends the first information to the first terminal, and the first information indicates the first time-frequency resource.

[0168] Correspondingly, the first terminal receives the first information from the first network device.

[0169] In the embodiment of this application, the first network device is the serving network device of the first terminal, and can also be called the serving base station, serving node, etc. The first terminal accesses the first network device, and the first network device is responsible for providing communication services for the first terminal.

[0170] The second network device is another network device adjacent to the first network device. When the time-frequency resources used by the second network device for data transmission overlap with the time-frequency resources scheduled by the first network device for the first terminal, on the overlapping time-frequency resources, the first terminal may receive the signal sent by the second network device or the signal sent by other terminals (such as the second terminal) accessing the second network device. This means that the second network device will cause interference to the first terminal. Therefore, in the embodiment of this application, the second network device can be understood as an interference source. The reason for the second network device to cause interference to the first terminal may be that it is relatively close to the first network device or the first terminal, or for other reasons, which is not limited.

[0171] In an embodiment of the present application, a first network device may configure first time-frequency resources for a first terminal. The first time-frequency resources may be used by the first terminal to receive indication information from a second network device indicating that the first terminal measures interference. The indication information indicating that the first terminal measures interference may also be simply referred to as a measurement indication or an interference measurement indication. The meaning of the indication information indicating that the first terminal measures interference will be described in detail below in the present application.

[0172] The first time-frequency resources may be periodic time-frequency resources configured by the first network device for the first terminal. The periodic time-frequency resources refer to that after the first network device configures the first time-frequency resources, the first time-frequency resources will periodically repeat at the same time-frequency resource positions. As Figure 5 shown, after the first network device configures the first time-frequency resources for the first terminal, the first terminal may periodically detect, on the first time-frequency resources, indication information from the second network device indicating that the first terminal measures interference. It should be noted that if the first time-frequency resources are periodic time-frequency resources configured by the first network device for the first terminal, in an embodiment of the present application, the first time-frequency resources specifically refer to the time-frequency resources of one period among the periodic time-frequency resources, rather than the time-frequency resources of multiple periods.

[0173] Alternatively, the first time-frequency resources may also be aperiodic time-frequency resources configured by the first network device for the first terminal. The first network device needs to perform corresponding configuration for the first terminal each time the first terminal uses the first time-frequency resources.

[0174] Optionally, the first network device may configure the first time-frequency resources for the first terminal through high-layer signaling. For example, the first network device may send RRC signaling to the first terminal, and relevant information of the first time-frequency resources is carried in the RRC signaling. Alternatively, the first network device may also dynamically configure the first time-frequency resources for the first terminal through physical-layer signaling. Or, the first network device may also jointly configure and activate the first time-frequency resources through high-layer signaling and physical-layer signaling, that is, after the first network device configures the first time-frequency resources for the first terminal through high-layer signaling, the first time-frequency resources are in an inactive state and the first terminal cannot use them. The first terminal can only normally use the first time-frequency resources after the first network device activates them through physical-layer signaling. For example, receive indication information from the second network device indicating that it measures interference on the first time-frequency resources. That is to say, the above first information may be high-layer signaling and / or physical-layer signaling.

[0175] Optionally, in the embodiments of the present application, after determining the first time-frequency resource, the first network device may further notify the second network device of the first time-frequency resource, so that the second network device can send indication information for instructing the first terminal to measure interference to the first terminal when the interference on the first terminal changes or in other situations where the first terminal needs to perform interference measurement. Exemplarily, the first network device may send third information to the second network device, and the third information is also used to indicate the first time-frequency resource. Correspondingly, the second network device may receive the third information from the first network device. It should be noted that the embodiments of the present application do not limit the order between the first network device sending the first information to the first terminal and the first network device sending the third information to the second network device.

[0176] Step S402: The second network device sends second information on the first time-frequency resource.

[0177] Correspondingly, the first terminal receives the second information from the second network device on the first time-frequency resource.

[0178] Step S403: The first terminal reports the first interference information measured according to the second information to the first network device.

[0179] Correspondingly, the first network device receives the first interference information reported by the first terminal.

[0180] In the embodiments of the present application, the second information may instruct the first terminal to measure interference. There may be various possible indication methods for the second information to instruct interference measurement. Specifically, in one possible implementation manner, the second information instructing the first terminal to measure interference may specifically mean that if the first terminal receives the second information, it performs interference measurement. For example, the second information may be 1-bit indication information. If the value of the second information received by the first terminal is 1, it means that the first terminal needs to measure interference. If the value of the second information received by the first terminal is 0, or the second information is not received, it means that the first terminal does not need to measure interference.

[0181] In another possible implementation manner, the second information may indicate information related to interference measurement. For example, it may include one or more pieces of information such as the time-frequency resource for interference measurement, the measurement index, and the sequence used for interference measurement. Thus, the second information instructing the first terminal to measure interference may specifically mean that the first terminal measures interference according to one or more pieces of information related to interference measurement indicated in the second information.

[0182] In yet another possible implementation, the second information may indicate information related to interference measurement and reporting. For example, it may include one or more pieces of information such as time-frequency resources for interference measurement, measurement metrics, sequences used for measuring interference, and time-frequency resources for reporting interference. Thus, the second information indicating that the first terminal measures interference may specifically mean that the first terminal measures and reports interference according to one or more pieces of information related to interference measurement and reporting indicated in the second information.

[0183] In the embodiments of the present application, when the first terminal receives the second information from the second network device, the first terminal may measure interference on the second time-frequency resources and report the measured first interference information to the first network device. That is, the second time-frequency resources are the time-frequency resources for interference measurement, and the first interference information is the interference information obtained by the first terminal measuring interference on the second time-frequency resources. It should be understood that the first interference information may be the interference information directly obtained by the first terminal after measuring interference on the second time-frequency resources, or may be the interference information obtained after interference smoothing or other processing on the basis of the interference information directly obtained after measuring interference, without limitation.

[0184] In one possible implementation, the first interference information may include an interference matrix or information describing the interference matrix. For a multi-antenna system, the interference measured by the first terminal is a matrix. The first terminal may directly feedback the matrix to the first network device, or feedback the values describing the matrix to the first network device. In another possible implementation, the first interference information may include a CQI, and the interference is implicitly included through the CQI.

[0185] Optionally, the second information may be used to indicate that the interference from the second network device has changed. That is, if the second network device determines that the interference it causes to the first terminal has changed or is about to change, the second network device may send the second information to the first terminal to indicate that the first terminal measures interference, so that the first terminal can obtain the latest interference information and report it to the first network device. Furthermore, the first network device can perform more accurate data scheduling for the first terminal according to the latest interference information reported by the first terminal.

[0186] In other words, if the first terminal detects the second information on the first time-frequency resource, it may indicate that the interference of the second network device to the first terminal has changed. The first terminal may measure the interference according to the second information and report the measured first interference information to the first network device. Conversely, if the first terminal does not detect the second information on the first time-frequency resource, it may indicate that the interference of the second network device to the first terminal has not changed. At this time, the first terminal may report the interference information obtained from the previous measurement, or may not report any interference information, or may also perform other actions, which are not limited in this application. It should be noted that in the case where the first terminal does not detect the second information on the first time-frequency resource, whether the first terminal chooses to report the interference information obtained from the previous measurement, does not report any interference information, or performs other actions is specified by the first network device.

[0187] Optionally, the second time-frequency resource may be a time-frequency resource for interference measurement indicated by the second network device through the second information, or may be a time-frequency resource for interference measurement pre-configured by the first network device, without limitation. If the second time-frequency resource is a time-frequency resource for interference measurement indicated by the second network device through the second information, the second information may include information for indicating the second time-frequency resource, such as may include an index of the second time-frequency resource, or include an index of the first reporting configuration associated with the second time-frequency resource, or include an index of the first measurement resource set where the second time-frequency resource is located. Optionally, it may also be that the second information includes an indication information for indicating an index of the second time-frequency resource, or includes an indication information for indicating an index of the first reporting configuration, or includes an indication information for indicating an index of the first resource set where the second time-frequency resource is located.

[0188] Exemplarily, in a possible implementation manner, the second information may include an index of the second time-frequency resource in a pre-configured measurement resource set, or include an indication information for indicating an index of the second time-frequency resource in a pre-configured measurement resource set. In this way, the first terminal may determine the second time-frequency resource according to the index of the second time-frequency resource.

[0189] This embodiment can be considered as directly indicating interference measurement resources. In this embodiment, the first network device may pre-configure a measurement resource set (ResourceSet) for the first terminal. The measurement resource set includes at least one interference measurement resource, and each interference measurement resource has a corresponding index in the measurement resource set. The second time-frequency resource is one of the at least one interference measurement resources. Optionally, the first network device may also pre-configure a first mapping relationship between the index of each interference measurement resource in the measurement resource set and the specific time-frequency resource location of the interference measurement resource for the first terminal. In this way, after receiving the second information, the first terminal can determine the specific time-frequency resource location of the second time-frequency resource according to the index of the second time-frequency resource in the configured measurement resource set and the first mapping relationship, and then measure interference on the second time-frequency resource.

[0190] For example, assume that the pre-configured measurement resource set includes two interference measurement resources, namely interference measurement resource 1 and interference measurement resource 2. Among them, the index of interference measurement resource 1 is 1, and the index of interference measurement resource 2 is 2. As an example, the second information may include the index 1 of interference measurement resource 1, or include indication information for indicating the index 1 of interference measurement resource 1, and the first terminal is instructed to select interference measurement resource 1 in the pre-configured measurement resource set to measure interference through the second information, that is, the second time-frequency resource is interference measurement resource 1 at this time.

[0191] In another possible embodiment, the second information may include the index of the first reporting configuration (reportconfig) in the reporting configuration set, or include indication information for indicating the index of the first reporting configuration in the reporting configuration set. The first reporting configuration is associated with the second time-frequency resource. That is to say, the second time-frequency resource is the interference measurement resource associated with the first reporting configuration. After receiving the second information, the first terminal can determine the index of the first reporting configuration according to the second information, and then determine the interference measurement resource associated with the first reporting configuration as the second time-frequency resource.

[0192] This embodiment can be considered as indirectly indicating interference measurement resources. In this embodiment, the first network device may pre-configure a reporting configuration set for the first terminal. The reporting configuration set includes at least one reporting configuration. Each reporting configuration has a corresponding index in the reporting configuration set, and each reporting configuration may be associated with at least one interference measurement resource. Among them, the first reporting configuration is one of the reporting configurations in the reporting configuration set, and the second time-frequency resource is the interference measurement resource associated with the first reporting configuration. Optionally, the first network device may also pre-configure a second mapping relationship between the index of each reporting configuration in the reporting configuration set and the interference measurement resource associated with the reporting configuration (such as the index of the resource or the specific time-frequency resource location of the resource) for the first terminal. In this way, after receiving the second information, the first terminal can determine the second time-frequency resource according to the index of the first reporting configuration included in the second information in the reporting configuration set and the second mapping relationship, and then measure interference on the second time-frequency resource, and report the measured first interference information to the first network device according to the indication of the first reporting configuration. Or, after receiving the second information, the first terminal can determine the second time-frequency resource according to the indication information included in the second information for indicating the index of the first reporting configuration in the reporting configuration set and the second mapping relationship, and then measure interference on the second time-frequency resource, and report the measured first interference information to the first network device according to the indication of the first reporting configuration.

[0193] In the embodiments of the present application, the reporting configuration may include information such as the index of the reporting configuration, the reporting type, and the measurement metrics to be reported.

[0194] For example, assume that the reporting configuration set includes two reporting configurations, namely reporting configuration 1 and reporting configuration 2. Among them, the index of reporting configuration 1 is 1, and the index of reporting configuration 2 is 2. As an example, the second information may include the index 1 of reporting configuration 1, or the second information may indicate the index 1, instructing the first terminal to select the interference measurement resource associated with reporting configuration 1 in the reporting configuration set for interference measurement. That is, the second time-frequency resource is the interference measurement resource associated with reporting configuration 1 at this time.

[0195] In yet another possible implementation, the second information may include an index of a first measurement resource set, or indication information for indicating the index of the first measurement resource set, where the first measurement resource set includes second time-frequency resources. After receiving the second information, the first terminal may determine the index of the first measurement resource set according to the second information, and then determine the first measurement resource set, and then determine the second time-frequency resources from the first measurement resource set according to a certain method. Optionally, the first terminal may consider that the time-frequency resource with the greatest interference among the time-frequency resources included in the first measurement resource set is the second time-frequency resource. Optionally, the first network device may indicate to the first terminal the manner of determining the second time-frequency resource from the first measurement resource through indication information, or rather, the first network device may indicate to the first terminal how to determine the second time-frequency resource from the first measurement resource set through indication information.

[0196] This implementation may be considered as an indirect indication of interference measurement resources. In this implementation, the first network device may pre-configure a set of measurement resource sets for the first terminal, and at least one measurement resource set is included in the set of measurement resource sets. Optionally, the first network device may also pre-configure a third mapping relationship between the index of each measurement resource set in the set of measurement resource sets and the measurement resource set for the first terminal. In this way, after receiving the second information, the first terminal may determine the first measurement resource set according to the index of the first measurement resource set included in the second information (or the indication information for indicating the index of the first measurement resource set included in the second information) and the third mapping relationship. Further, the second time-frequency resources are determined from the first measurement resource set according to the above method.

[0197] In yet another possible implementation, the second information may also include information for directly indicating the specific time-frequency resource location of the second time-frequency resource.

[0198] Optionally, the second time-frequency resource may be a time-frequency resource that causes interference to the first terminal among the time-frequency resources scheduled by the second network device for the second terminal accessing the second network device. Optionally, the second time-frequency resource may be a time-frequency resource that is discrete in the frequency domain, for example, including a plurality of PRBs configured discretely in the frequency domain. That is to say, this application allows the second time-frequency resource to be configured as discrete in the frequency domain according to actual requirements, and it is not necessary for the first terminal to measure interference on time-frequency resources without interference, thereby saving overhead.

[0199] For example, the time-frequency resources scheduled by the second network device for the second terminal include 5 RBs in the frequency domain, namely RB1, RB2, RB3, RB4, and RB5. If there is interference to the first terminal only on RB1 and RB3, then in the embodiment of the present application, the first terminal only needs to measure the interference on RB1 and RB3. In the prior art, although the first terminal can only feedback the interference on RB1 and RB3, the first terminal needs to measure the interference on RB1 to RB3. Because in the prior art, the resources for measuring interference must be continuous.

[0200] It should be understood that the first terminal measuring interference on the second time-frequency resources may include measuring uplink interference and / or downlink interference. Correspondingly, the first interference information may include uplink interference information and / or downlink interference information. Optionally, the interference source of the downlink interference is the second network device, and the interference source of the uplink interference measurement is the second terminal accessing the second network device.

[0201] It can be seen from this that in the embodiment of the present application, the first terminal can receive the second information from the second network device on the first time-frequency resources, measure the interference from the second network device according to the second information, and report the measured first interference information to the first network device. Since the second network device (i.e., the interference source) can send the second information indicating the first terminal to measure the interference to the first terminal when the interference of the second network device to the first terminal changes, therefore, by adopting the above technical solution, the first terminal can accurately track the change of the interference brought by the second network device and report more accurate interference information to the first network device, so that the first network device can perform more accurate data scheduling according to the interference information reported by the first terminal, thereby effectively saving resource overhead and improving the reliability of data transmission.

[0202] Optionally, the second information may further indicate a first time interval. The first time interval may be a time interval during which the first terminal does not need to detect the indication information indicating the first terminal to measure the interference from the second network device. In this way, after receiving the second information, the first terminal may no longer detect the indication information indicating the first terminal to measure the interference from the second network device within this first time interval. Or, the first time interval may also be a time interval during which the first terminal does not need to measure the interference from the second network device. In this way, after receiving the second information, the first terminal may no longer measure the interference from the second network device within this first time interval. Or, the first time interval may also be a time interval during which the first terminal does not need to report the measured interference from the second network device. In this way, after receiving the second information, even if the first terminal measures the interference brought by the second network device within this first time interval, it does not report the measured interference to the first network device.

[0203] The first time interval can also be understood as the time interval during which the interference of the second network device on the first terminal remains unchanged. That is to say, if the interference of the second network device on the first terminal remains unchanged within a certain period after this change occurs, the second network device can indicate to the first terminal, through the second information, the first time interval during which its interference remains unchanged. In this way, the first terminal does not need to detect, within this first time interval, the indication information indicating that the first terminal measures interference from the second network device, or does not need to measure the interference from the second network device.

[0204] It can be understood that, as described above, if the interference of the second network device on the first terminal changes, the second network device will send, on the first time-frequency resource, the indication information indicating that the first terminal measures interference. Further, if the first time-frequency resource is a configured periodic time-frequency resource, the first terminal needs to detect, on the first time-frequency resource of each period, the indication information indicating that it measures interference. Since the interference caused by the second network device on the first terminal remains unchanged within the first time interval, within this first time interval, the second network device may not send the indication information indicating that it measures interference to the first terminal. Therefore, the first terminal does not need to measure the interference from the second network device within this first time interval, nor does it need to continue to detect, within this first time interval, the indication information sent by the second network device on the first time-frequency resource indicating that it measures interference.

[0205] It can be seen that by indicating the first time interval in the second information in the above manner, the number of times the first terminal detects the indication information indicating that it measures interference on the first time-frequency resource can be effectively reduced, the detection power consumption of the first terminal can be reduced, and energy can be saved.

[0206] In a possible implementation manner, the second network device can explicitly indicate, in the second information, the start time, duration (i.e., the time length or duration of the first time interval) and / or end time of the first time interval. In another possible implementation manner, the second network device can also only explicitly indicate, in the second information, the duration and / or end time of the first time period, and the first terminal determines the start time of the first time interval according to a certain preset rule. For example, the start time of the first time interval can be a specified time point, or can also be the time point when the first terminal receives the second information, or can also be the start time or end time of the first time-frequency resource. The present application does not limit this.

[0207] In yet another possible implementation, the first network device may configure an interference measurement period for the first terminal. Exemplarily, the interference measurement period may be the period of the first time-frequency resource, or an integer multiple of the period of the first time-frequency resource, without limitation. In this case, the second network device may indicate, in the second information, the number of interference measurement periods included in the first time interval, indicating how many interference measurement periods after the first terminal receives the second information, the first terminal does not need to detect the information indicating that the first terminal measures interference sent by the second network device on the first time-frequency resource, or indicating how many interference measurement periods after the first terminal receives the second information, the first terminal does not need to measure the interference from the second network device.

[0208] In yet another possible implementation, the first time-frequency resource configured by the first network device for the first terminal is a periodic resource. In this case, the second network device may indicate, in the second information, the number of periods of the first time-frequency resource included in the first time interval, indicating how many periods after the first terminal receives the second information, the first terminal does not need to detect the information indicating that the first terminal measures interference sent by the second network device on the first time-frequency resource, or indicating how many periods after the first terminal receives the second information, the first terminal does not need to measure the interference from the second network device.

[0209] For example, as Figure 6 shown, the start time of the first time interval may be the start time of the first time-frequency resource, the duration of the first time interval is L, and the value of L is indicated by the second network device in the second information. The interference caused by the second network device to the first terminal remains unchanged within L after the start time of the first time-frequency resource, and may or may not change outside L after the start time of the first time-frequency resource, without limitation. Thus, after the first terminal receives the second information on the first time-frequency resource, it may no longer continue to detect the indication information indicating that it measures interference sent by the second network device within L after the start time of the first time-frequency resource.

[0210] It should be noted that, in the embodiments of the present application, the first time interval may be irrelevant to the interference pattern of the second network device, or may be relevant to the interference pattern of the second network device. The above description of the first time interval is given by taking the configuration of the first time interval being irrelevant to the interference pattern of the second network device as an example. If the first time interval is relevant to the interference pattern of the second network device, each interference pattern of the second network device may have a corresponding first time interval, and the first time interval corresponding to each interference pattern can be implemented according to the above method, which will not be elaborated here. Since the interference under different interference patterns is measured independently, the first time intervals corresponding to different interference patterns are independent of each other, that is, the first time intervals (including the start time and / or duration) corresponding to different interference patterns may be the same or different, which is not limited. Regarding the content of the interference pattern, the present application will be described in detail below.

[0211] Optionally, there may be one or more interference patterns (patterns) in the interference caused by the second network device to the first terminal. Since different information such as the time-frequency resources scheduled by the second network device, the precoding matrix used, or the transmission power of the signal used will result in different interference caused by the second network device to the first terminal, a set of information such as the time-frequency resources scheduled, the precoding matrix used, or the transmission power of the signal used can be referred to as an interference pattern. Among them, the precoding matrix used can be identified by a precoding matrix indicator (PMI). It should be understood that for different interference patterns, one or more of the scheduled time-frequency resources, the precoding matrix used, or the transmission power of the signal used may be different, which is not limited. In addition, an interference pattern may correspond to an interference measurement resource or a reporting configuration, which is not limited.

[0212] If there is only one interference pattern in the interference caused by the second network device to the first terminal, and it is assumed to be called the first interference pattern, the second network device and the first terminal can be implemented according to the method described above. It can be understood that the second time-frequency resource described above corresponds to the first interference pattern of the second network device, or in other words, the second time-frequency resource is the interference measurement resource corresponding to the first interference pattern of the second network device. For example, the first interference pattern or the reporting configuration corresponding to the first interference pattern may be associated with the second time-frequency resource. In this way, after receiving the second information from the second network device, the first terminal can measure the interference on the second time-frequency resource according to the second information, obtain the first interference information corresponding to the first interference pattern, and report the first interference information to the first network device.

[0213] Optionally, the first terminal may further report one or more of the following information: the identifier of the first interference pattern (such as pattern ID), the index of the second time-frequency resource (such as the index of the second time-frequency resource in the pre-configured measurement configuration set), the index of the first reporting configuration (such as the index of the first reporting configuration in the pre-configured reporting configuration set), and the index of the first measurement resource set. Wherein, the first reporting configuration is the reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource. One or more of this information can be understood as the identification information of the first interference pattern. In this way, when the first terminal reports the measured first interference information and the identification information of the first interference pattern to the first network device together, the first network device can identify, according to the identification information of the first interference pattern, that the first interference information is the interference under the first interference pattern of the second network device measured by the first terminal.

[0214] If there are multiple interference patterns for the interference caused by the second network device to the first terminal, taking the existence of two interference patterns as an example, assuming that these two interference patterns are the first interference pattern and the second interference pattern respectively, the second network device may indicate, in the second information, the interference measurement resources corresponding to the first interference pattern and the second interference pattern respectively, so that the first terminal can measure the interference under these two interference patterns respectively and report the interference information corresponding to the two measured interference patterns.

[0215] Specifically, the second information may indicate a second time-frequency resource and a third time-frequency resource, where the second time-frequency resource corresponds to the first interference pattern of the second network device, and the third time-frequency resource corresponds to the second interference pattern of the second network device. That is, the second time-frequency resource is the interference measurement resource corresponding to the first interference pattern, and the third time-frequency resource is the interference measurement resource corresponding to the second interference pattern. For example, the first interference pattern or the first reporting configuration corresponding to the first interference pattern may be associated with the second time-frequency resource, and the second interference pattern or the second reporting configuration corresponding to the second interference pattern may be associated with the third time-frequency resource.

[0216] The manner in which the second information indicates the second time-frequency resource may refer to the description above and will not be repeated here. The manner in which the second information indicates the third time-frequency resource may refer to the manner in which the second information indicates the second time-frequency resource above, that is, the second information may include the index of the third time-frequency resource, or include the index of the second reporting configuration associated with the third time-frequency resource, or include the index of the second measurement resource set that includes the third time-frequency resource, or include the indication information for indicating the index of the second time-frequency resource, or include the indication information for indicating the index of the second reporting configuration, or include the indication information for indicating the index of the second measurement resource set, which will not be elaborated.

[0217] Thus, after the first terminal receives the second information from the second network device, it can, according to the second information, measure interference on the second time-frequency resource to obtain first interference information corresponding to the first interference pattern, and measure interference on the third time-frequency resource to obtain second interference information corresponding to the second interference pattern. It should be understood that, similar to the first interference information, the second interference information can be the interference information directly obtained by the first terminal after measuring interference on the third time-frequency resource, or can be the interference information obtained after interference smoothing or other processing on the basis of the interference information directly obtained after measuring interference, without limitation.

[0218] Furthermore, the first terminal can report the measured interference information (such as the first interference information and / or the second interference information) to the first network device.

[0219] Specifically, in a possible implementation manner, the first terminal can report the first interference information and the second interference information, that is, the first terminal can feedback the interference information corresponding to the first interference pattern and the interference information corresponding to the second interference pattern together.

[0220] Optionally, for the first interference pattern, the first terminal can also report one or more of the following information: the identifier of the first interference pattern (such as pattern ID), the index of the second time-frequency resource (such as the index of the second time-frequency resource in the pre-configured measurement configuration set), the index of the first reporting configuration (such as the index of the first reporting configuration in the pre-configured reporting configuration set), and the index of the first measurement resource set, where the first reporting configuration is the reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource. One or more of these information can be understood as the identification information of the first interference pattern. The first terminal reporting the first interference information and the identification information of the first interference pattern to the first network device together can enable the first network device to identify, according to the identification information of the first interference pattern, that the first interference information is the interference information corresponding to the first interference pattern of the measured second network device.

[0221] Similarly, for the second interference pattern, the first terminal may also report one or more of the following information: the identifier of the second interference pattern, the index of the third time-frequency resource (such as the index of the third time-frequency resource in the pre-configured measurement configuration set), the index of the second reporting configuration (such as the index of the second reporting configuration in the pre-configured reporting configuration set), and the index of the second measurement resource set. The second reporting configuration is the reporting configuration corresponding to the second interference pattern, and the second measurement resource set includes the third time-frequency resource. One or more of this information can be understood as the identification information of the second interference pattern. In this way, when the first terminal reports the second interference pattern and the identification information of the second interference pattern to the first network device, the first network device can identify that the second interference information is the interference information corresponding to the second interference pattern of the second network device measured according to the relevant information of the second interference pattern.

[0222] In another possible implementation manner, the first terminal may also report a combination of the first interference information and the second interference information. The combination may be the result of operating the first interference information and the second interference information through a certain function, or may be an interference information selected from the first interference information or the second interference information according to a certain preset rule, that is, the first interference information or the second interference information.

[0223] For example, assume that the first interference information is a1 and the second interference information is a2. Then the interference information reported by the first terminal to the first network device can be expressed as g(a1, a2), where the function g() represents a certain operation on a1 and a2. For example, g(a1, a2) may be the sum of a1 and a2, that is, g(a1, a2) = a1 + a2.

[0224] For another example, the interference corresponding to the measured first interference information is X, the interference corresponding to the second interference information is Y, and the useful signal of the measured first network device and the first terminal is Z. Then the reported interference information may be Z / (X + Y), which represents the signal-to-noise ratio calculated according to the first interference information and the second interference information.

[0225] For yet another example, the preset rule may be that when there are multiple interference patterns, the first terminal may only report the interference information corresponding to the interference pattern with the strongest interference. That is to say, if the interference intensity indicated in the first interference information is greater than or equal to the interference intensity indicated in the second interference information, the first terminal may only report the first interference information; conversely, if the interference intensity indicated in the first interference information is less than the interference intensity indicated in the second interference information, the first terminal may only report the second interference information. Optionally, the interference intensity can be measured by the interference-to-noise ratio. The larger the interference-to-noise ratio, the greater the interference intensity.

[0226] It should be noted that the interference tracking methods in the above-described two interference patterns can be extended to scenarios with more interference patterns, which will not be elaborated in this application. Moreover, if there are multiple interference patterns in the interference caused by the second network device to the first terminal, the interference patterns measured by the first terminal can be some or all of the multiple interference patterns. Specifically, which interference patterns to measure can be directly or indirectly indicated by the second network device in the second information, such as indicating the interference measurement resources to be measured or the index of the reporting configuration corresponding to the interference pattern or the index of the set of interference measurement resources. Optionally, the mapping relationships between the interference pattern, the interference measurement resources, the reporting configuration, and the set of interference measurement resources can also be indicated in the second information.

[0227] In the embodiments of this application, if the interference caused by the second network device to the first terminal is uncertain, for example, the interference may be a combination of several interference patterns or one of certain interference patterns, the second network device can also directly or indirectly indicate to the first terminal to measure the interference under multiple interference patterns. For example, the second network device indicates the interference measurement resources corresponding to multiple interference patterns in the second information, so that the first terminal can accurately track the interference change.

[0228] Optionally, when the first terminal reports the measured interference information to the first network device, it can also report the interference source. Exemplarily, the first terminal can include the interference information to be reported (such as the first interference information and / or the second interference information) in the first measurement report and send it to the first network device. Further, in a possible implementation manner, the first measurement report may further include first indication information, which is used to indicate the second network device. This implementation manner can be considered as explicitly reporting the interference source, indicating that the interference source is the second network device, and the first indication information can be understood as the interference source indication. Or, in another possible implementation manner, the first measurement report can be sent at a first moment, and the first moment is the interference reporting moment associated with the second network device. In this implementation manner, the interference reporting moments associated with different interference sources are different. Therefore, it can be considered as implicitly reporting the interference source.

[0229] It should be noted that the interference information to be reported may include first interference information and second interference information, or a combination of the first interference information and the second interference information. The combination of the first interference information and the second interference information may be the first interference information and / or the second interference information, or the result of an operation on the first interference information and the second interference information. This application does not limit it. For example, when the first terminal only needs to measure the interference of the first interference mode, the interference information to be reported may only include the first interference information. When the first terminal needs to measure the interference of the first interference mode and the second interference mode, the interference information to be reported may include the first interference information and the second interference information, or a combination of the first interference information and the second interference information, or one of the first interference information and the second interference information.

[0230] It should also be noted that for the first terminal to report the interference source, it is required that the first terminal has the ability to identify the interference source, or in other words, it is required that the first terminal has the ability to distinguish different interference sources. That is to say, if the first terminal is to report the interference source, before reporting the interference source, the first terminal needs to know in some way that the second information is from the second network device, or know that the measured interference is caused by the second network device. The way for the first terminal to identify the interference source will be described in detail in the following text of this application.

[0231] It can be seen from the above that by adopting the above technical solution, after receiving the interference information reported by the first terminal, the first network device can determine which interference source the interference comes from, so that when scheduling data transmission for the first terminal, it can accurately avoid the interference caused by the interference source, and improve the reliability of data transmission.

[0232] As mentioned above, the second network device is an interference source for the first terminal. In the embodiments of this application, in some scenarios, the first terminal may also have multiple interference sources. If there are multiple interference sources, the first network device may configure the same time-frequency resources for different interference sources, or may configure different time-frequency resources. The time-frequency resources refer to the time-frequency resources used to send the indication information indicating that the first terminal measures interference, such as the first time-frequency resource above.

[0233] Taking the case of having two interference sources as an example, assuming that the two interference sources are the second network device and the third network device respectively, the first network device configuring the same time-frequency resources for different interference sources means that after the first network device configures the first time-frequency resources for the first terminal, the second network device can send the indication information (such as the second information above) indicating that the first terminal measures interference on the first time-frequency resource, and the third network device can also send the indication information (such as the fourth information) indicating that the first terminal measures interference on the first time-frequency resource.

[0234] In this way, after receiving the second information, the first terminal can, according to the second information, measure the interference caused by the second network device on the second time-frequency resource and report the measured first interference information to the first network device. Similarly, after receiving the fourth information, the first terminal can, according to the fourth information, measure the interference caused by the third network device on the fourth time-frequency resource and report the measured third interference information to the first network device. Optionally, the second time-frequency resource and the fourth time-frequency resource can be the same or different, which is not limited.

[0235] Optionally, the second information can be used to indicate that the interference from the second network device has changed, and the fourth information can be used to indicate that the interference from the third network device has changed. That is to say, if the interference of the second network device on the first terminal has changed, the second network device can send the second information on the first time-frequency resource; if the interference of the third network device on the first terminal has changed, the third network device can also send the fourth information on the first time-frequency resource. If the first terminal does not receive the second information nor the fourth information on the first time-frequency resource, the first terminal can consider that the interference caused by the second network device and the third network device has not changed. At this time, the actions performed by the first terminal can be pre-specified by the first network device.

[0236] Optionally, the second information can indicate the second time-frequency resource for interference measurement, and the fourth information can indicate the fourth time-frequency resource for interference measurement. The manner in which the second information indicates the second time-frequency resource can refer to the description above, and the manner in which the fourth information indicates the fourth time-frequency resource can refer to the manner in which the second information indicates the second time-frequency resource, which will not be elaborated here.

[0237] Optionally, the second information may indicate a first time interval, and the fourth information may indicate a second time interval. Herein, the first time interval indicates that the second network device instructs the first terminal that within this first time interval, it does not need to detect the indication information indicating its measurement of interference sent by the second network device, or does not need to measure the interference from the second network device, or does not need to report the interference from the second network device. Optionally, this first time interval is a time interval during which the interference caused by the second network device to the first terminal remains unchanged after this change occurs. Optionally, within this first time interval, the second network device has no interference on the first terminal. Similarly, the second time interval indicates that the third network device instructs the first terminal that within this second time interval, it does not need to detect the indication information indicating its measurement of interference sent by the third network device, or does not need to measure the interference from the third network device, or does not need to report the interference from the third network device. Optionally, this second time interval is a time interval during which the interference caused by the third network device to the first terminal remains unchanged after this change occurs. Optionally, within this second time interval, the third network device has no interference on the first terminal.

[0238] The manner in which the second information indicates the first time interval may refer to the description in the foregoing text and will not be repeated. The manner in which the fourth information indicates the second time interval may refer to the relevant description of how the second information indicates the first time interval in the foregoing text and will not be elaborated.

[0239] It should be noted that the first time interval and the second time interval respectively correspond to two interference sources, and one or more of their start times, durations, or end times may be the same or different, which is not limited. Or rather, the first time interval and the second time interval may completely overlap, partially overlap, or not overlap at all, which is not limited. It can be understood that since the second network device and the third network device share the first time-frequency resource, if the first time interval and the second time interval overlap, it means that the first terminal can, within the time interval where the first time interval and the second time interval overlap, no longer detect the indication information indicating its measurement of interference sent by the second network device and the indication information indicating its measurement of interference sent by the third network device on the first time-frequency resource.

[0240] It should be noted that the above process of interference measurement and reporting is described by taking the existence of one interference pattern for each of the second network device and the third network device as an example. It should be understood that the present application does not limit the number of interference patterns of the second network device and the number of interference patterns of the third network device. Therefore, the first interference information in the above process can be considered to represent the interference information from the second network device reported by the first terminal, and the third interference information can be considered to represent the interference information from the third network device reported by the first terminal.

[0241] If the second network device has multiple interference patterns, or the interference of the second network device in a future time period is uncertain, for example, it may be a combination of several interference patterns or one of several interference patterns, the second network device may directly or indirectly indicate interference measurement resources corresponding to multiple interference patterns in the second information, so that the first terminal measures the interference under these multiple interference patterns respectively. The specific implementation manner may refer to the description in the above text.

[0242] Similarly, if the third network device has multiple interference patterns, or the interference of the third network device in a future time period is uncertain, for example, it may be a combination of several interference patterns or one of several interference patterns, the third network device may also directly or indirectly indicate interference measurement resources corresponding to multiple interference patterns in the fourth information, so that the first terminal measures the interference under these multiple interference patterns respectively. It can be understood that different interference patterns of the third network device may correspond to different interference measurement resources or reporting configurations, and when the first terminal reports the measured interference information, it may report the interference information corresponding to each measured interference pattern, or report a combination of the interference information corresponding to multiple interference patterns.

[0243] On this basis, if the first network device configures the same time-frequency resources for different interference sources, the first terminal may or may not distinguish different interference sources. Herein, the first terminal distinguishing interference sources means that since both the second network device and the third network device use the first time-frequency resource to send indication information for instructing the first terminal to measure interference, the first terminal may identify the second information sent by the second network device and the fourth information sent by the third network device in a certain way.

[0244] Specifically, in a possible implementation manner, on the same time-frequency resource, different interference sources may send information using different precoding matrices, so as to distinguish the information of different interference sources in the spatial dimension. That is to say, the second network device may send the second information using the precoding matrix corresponding to the second network device, and the third network device may send the fourth information using the precoding matrix corresponding to the third network device. In this way, the first terminal may identify the second information sent by the second network device and the fourth information sent by the third network device according to the PMI in the received indication information, because the PMI in different indication information indicates different precoding matrices.

[0245] In another possible implementation, on the same time-frequency resource, different interference sources can use different spreading sequences to send information, so as to distinguish the information sent by different interference sources by using the orthogonality of the spreading sequences. That is to say, the second network device can use the spreading sequence corresponding to the second network device to send the second information, while the third network device can use the spreading sequence corresponding to the third network device to send the fourth information. In this way, the first terminal can identify the second information sent by the second network device and the fourth information sent by the third network device according to the spreading sequence used in the received indication information.

[0246] In yet another possible implementation, on the same time-frequency resource, the transmission powers of the signals used by different interference sources can be different, so that the information sent by different interference sources can be distinguished according to the magnitude of the power of the received signal. That is to say, the second network device can use the transmission power of the signal corresponding to the second network device to send the second information, while the third network device can use the transmission power of the signal corresponding to the third network device to send the fourth information. In this way, the first terminal can identify the second information sent by the second network device and the fourth information according to the power of the received indication information.

[0247] It can be seen from this that if a piece of indication information instructing the first terminal to perform interference measurement received by the first terminal uses the precoding matrix or spreading sequence or transmission power of the signal corresponding to the second network device, it means that the indication information is the second information, and the corresponding interference source is the second network device. In this way, the first terminal can determine that the second network device instructs it to measure interference, or further determine that the interference caused by the second network device to it has changed.

[0248] Similarly, if a piece of indication information used to instruct the first terminal to perform interference measurement received by the first terminal uses the precoding matrix or spreading sequence or transmission power of the signal corresponding to the third network device, it means that the indication information is the fourth information, and the corresponding interference source is the third network device. In this way, the first terminal can determine that the third network device instructs it to measure interference, or further determine that the interference caused by the third network device to it has changed.

[0249] Optionally, the first network device can pre-configure the mapping relationship between each interference source and the PMI or spreading sequence or transmission power of the signal corresponding to the interference source for the first terminal, so that the first terminal can identify the interference source.

[0250] It can be understood that the first terminal in the embodiments of the present application can also use other methods to distinguish different interference sources, which is not limited. For example, the interference source can also carry its own identifier in the indication information sent to instruct the first terminal to measure interference, and the first terminal identifies the interference source according to the identifier of the interference source included in the received indication information.

[0251] The first terminal does not distinguish between interference sources means that both the second network device and the third network device use the first time-frequency resource to send indication information for instructing the first terminal to measure interference, but the first terminal does not distinguish or does not need to distinguish whether the received indication information for instructing it to measure interference comes from the second network device or the third network device. Or rather, if the first terminal receives the indication information for instructing it to measure interference, it will perform interference measurement and reporting according to the indication of the indication information.

[0252] As Figure 7 shown, in a scenario with two interference sources, once the interference of interference source 1 or interference source 2 changes, the first terminal needs to measure the interference once and report it, and does not distinguish between interference sources. In Figure 7 the two complete interference behavior update cycles shown, the first terminal will perform interference measurement and reporting at multiple moments shown by the dotted line.

[0253] The first network device configuring different time-frequency resources for different interference sources means that the first network device can configure the first time-frequency resource for the first terminal for the second network device and configure the fifth time-frequency resource for the first terminal for the third network device. In this way, the second network device can send indication information (such as the second information) for instructing the first terminal to measure interference on the first time-frequency resource, and the third network device can send indication information (such as the fourth information) for instructing the first terminal to measure interference on the fifth time-frequency resource.

[0254] Correspondingly, the first terminal can distinguish between interference sources according to the time-frequency resource for receiving the indication information, that is, if the first terminal receives the indication information for instructing it to measure interference from the first time-frequency resource, it means that the indication information is the second information and the interference source is the second network device; if the first terminal receives the indication information for instructing it to measure interference from the fifth time-frequency resource, it means that the indication information is the fourth information and the interference source is the third network device.

[0255] Furthermore, after the first terminal receives the second information, it can measure the interference on the second time-frequency resource according to the second information and report the measured first interference information to the first network device. Similarly, after the first terminal receives the fourth information, it can also measure the interference on the fourth time-frequency resource according to the fourth information and report the obtained third interference information to the first network device. The specific implementation manners of the second information and the fourth information and the specific process of the first terminal measuring and reporting interference can refer to the description in the above text and will not be repeated here.

[0256] Optionally, the second information may be used to indicate that the interference from the second network device has changed, and the fourth information may be used to indicate that the interference from the third network device has changed. That is, if the interference of the second network device on the first terminal has changed, the second network device may send the second information on the first time-frequency resource. If the interference of the third network device on the first terminal has changed, the third network device may also send the fourth information on the fifth time-frequency resource. If the first terminal does not receive the second information on the first time-frequency resource and does not receive the fourth information on the fifth time-frequency resource, the first terminal may consider that the interference caused by the second network device and the third network device has not changed. At this time, the actions performed by the first terminal may be pre-specified by the first network device.

[0257] Optionally, the second information may indicate the second time-frequency resource for interference measurement, and the fourth information may indicate the fourth time-frequency resource for interference measurement, which will not be elaborated here. The second time-frequency resource and the fourth time-frequency resource may be the same or different, which is not limited.

[0258] Optionally, the second information may indicate the first time interval, and the fourth information may indicate the second time interval, which will not be elaborated here.

[0259] It should be noted that the above process is only described by taking the case where both the second network device and the third network device have one interference pattern as an example. The present application does not limit the number of interference patterns of the first network device and the number of interference patterns of the third network device. Therefore, the first interference information in the above process represents the interference information reported by the first terminal from the second network device, and the third interference information represents the interference information reported by the first terminal from the third network device. When the second network device or the third network device has multiple interference patterns, or when it is necessary to measure the interference of multiple interference patterns of the second network device or the third network device, it can be extended according to the method described above.

[0260] For the method of the first network device to configure the first time-frequency resource, please refer to the description above and will not be repeated. The method of the first network device to configure the fifth time-frequency resource may refer to the relevant description of the first network device configuring the first time-frequency resource above. For example, after the first network device determines the fifth time-frequency resource, it may send the fifth information to the first terminal and send the sixth information to the third network device. The fifth information is used to indicate the fifth time-frequency resource to the first terminal, and the sixth information is used to indicate the fifth time-frequency resource to the third network device, which will not be elaborated here.

[0261] It should be noted that the first time-frequency resource and the fifth time-frequency resource are independently configured by the first network device for the second network device and the third network device respectively. If both the first time-frequency resource and the fifth time-frequency resource are periodic time-frequency resources configured by the first network device, the periods of the first time-frequency resource and the fifth time-frequency resource are also independently configured, and they can be the same or different, without limitation.

[0262] In addition, although the first network device configures different time-frequency resources for different interference sources, different interference sources can still use different precoding matrices, spreading sequences, or transmission powers of signals to send information, or different interference sources can also carry their own identifiers in the indication information indicating the first terminal to measure interference sent by them. The present application does not limit this.

[0263] In the embodiments of the present application, in the case where there are multiple interference sources and the first terminal distinguishes different interference sources, or in other words, in the case where the first terminal has the ability to identify the identity of the interference source, the second information can indicate that the interference of the second network device on the first terminal has changed, and the fourth information can indicate that the interference of the third network device on the first terminal has changed. If the first terminal does not distinguish interference sources or the first terminal does not have the ability to identify interference sources, after receiving the second information or the fourth information, the first terminal can only determine that the interference of an interference source has changed, but cannot determine which interference source's interference has changed.

[0264] Furthermore, in a scenario where there are multiple interference sources, the interference information corresponding to different interference sources can be reported separately or combined. The separate reporting means reporting the interference information corresponding to multiple interference sources respectively, and the combined reporting can refer to reporting the operation result after operating on the interference information corresponding to different interference sources. For example, it can be the sum of the interference information corresponding to different interference sources, or the interference information corresponding to one or more of them. For example, select the interference information with the strongest interference or interference greater than a certain set threshold for reporting.

[0265] Optionally, if the interference information corresponding to different interference sources is reported separately, then when the first terminal reports the interference information, it can also report the interference source. Exemplarily, in one possible implementation manner, the first terminal may carry a corresponding interference source indication when reporting the interference information. For example, the first terminal may report the interference information corresponding to the second network device and the interference source indication (i.e., the first indication information) for indicating the second network device, and the interference information corresponding to the third network device and the interference source indication for indicating the third network device. The interference source indication for indicating the third network device may be referred to as the second indication information. It should be noted that the interference information corresponding to the second network device and the interference information corresponding to the third network device may be sent in the same measurement report or in different measurement reports, which is not limited. In this way, the first network device can identify the interference source according to the interference source indication corresponding to the interference information.

[0266] Alternatively, in another possible implementation manner, the interference reporting times associated with different interference sources may be different. For example, the first terminal includes the interference information corresponding to the second network device in a measurement report and sends the measurement report at a first time, where the first time is the interference reporting time associated with the second network device, and includes the interference information corresponding to the third network device in another measurement report and sends the other measurement report at a second time, where the second time is the interference reporting time associated with the third network device. The first time is different from the second time. In this way, the first network device can identify the interference source according to the reporting time of the interference information.

[0267] In the case of more interference sources, the methods for the two interference sources above can be referred to for implementation, which will not be elaborated here.

[0268] Embodiment 2

[0269] Please refer to Figure 8 , which is a schematic flowchart of another interference tracking method provided by an embodiment of this application. The method includes:

[0270] Step S801: The first network device sends seventh information to the first terminal, where the seventh information indicates the sixth time-frequency resource.

[0271] Correspondingly, the first terminal receives the seventh information from the first network device.

[0272] For the introduction of the first terminal, the first network device, the second network device, and the third network device, reference can be made to the relevant descriptions in Embodiment 1, and the repeated parts will not be elaborated here.

[0273] In this embodiment, the first network device may configure the sixth time-frequency resource for the first terminal, and the sixth time-frequency resource is used for the first terminal to receive information related to the interference pattern from the second network device. The information related to the interference pattern may be information indicating the interference pattern of the second network device, such as the ninth information in the following text.

[0274] The sixth time-frequency resource may be a periodic time-frequency resource or a non-periodic time-frequency resource, which is not limited in this application. The manner in which the first network device configures the sixth time-frequency resource may refer to the relevant description of the manner in which the first network device configures the first time-frequency resource in the foregoing text, and will not be elaborated here.

[0275] Optionally, in this embodiment, after determining the sixth time-frequency resource, the first network device may further notify the sixth time-frequency resource to the second network device. In this way, after the interference pattern changes, the second network device may send information indicating the new interference pattern to the first terminal on the sixth time-frequency resource, so that the first terminal can determine the interference caused by the new interference pattern. Exemplarily, the first network device may send the eighth information to the second network device, and the eighth information indicates the sixth time-frequency resource. Correspondingly, the second network device may receive the eighth information from the first network device.

[0276] Step S802: The second network device sends the ninth information on the sixth time-frequency resource, and the ninth information indicates one or more of the following information: the seventh time-frequency resource, the first precoding matrix, and the first transmit power.

[0277] Correspondingly, the first terminal may receive the ninth information from the second network device on the sixth time-frequency resource.

[0278] In this embodiment, the ninth information is information indicating the interference pattern of the second network device. Specifically, indicating the interference pattern of the second network device may be information indicating one or more of the seventh time-frequency resource, the first precoding matrix, and the first transmit power.

[0279] Among them, the seventh time-frequency resource refers to the time-frequency resource scheduled by the second network device for the second terminal accessing itself, that is, the time-frequency resource used for communication between the second network device and the second terminal accessing the second network device. Optionally, the seventh time-frequency resource may also be understood as the time-frequency resource that causes interference to the first terminal among the time-frequency resources scheduled by the second network device.

[0280] The first precoding matrix refers to the precoding matrix used by the second network device for data transmission with the second terminal. This first precoding matrix can also be understood as the precoding matrix used by the second network device for scheduling data transmission for the second terminal, or the precoding matrix used for signal transmission and reception between the second network device and the second terminal. It can be understood that signal transmission and reception between the second network device and the second terminal include the second network device sending signals to the second terminal and / or the second network device receiving signals from the second terminal. This first precoding matrix can be indicated by the first PMI.

[0281] The first transmission power refers to the transmission power used by the second network device to send signals to the second terminal. This first transmission power can also be understood as the transmission power used by the second network device to instruct the second terminal to send signals, or the transmission power used for signal transmission and reception between the second network device and the second terminal. The ninth information indicating the first transmission power can indicate a true transmission value, such as 30 dBm, or it can also indicate a relative value, such as a ratio relative to noise, such as 30 dB.

[0282] It should be noted that when the second terminal accesses the second network device, correspondingly, the second network device is the serving network device for the second terminal. The second terminal can communicate with the second network device. For example, the second terminal can receive control information and data information from the second network device, or the second terminal can also send data information to the second network device. It should be noted that in this embodiment, the second terminal can refer to a specific terminal accessing the second network device, or it can also be a collective term for one or more terminals accessing the second network device.

[0283] Step S803: The first terminal reports the fourth interference information obtained based on the ninth information to the first network device.

[0284] In this embodiment, after receiving the ninth information, the first terminal can determine the fourth interference information according to the channel information and information on interference patterns such as the seventh time-frequency resource, the first precoding matrix, and the first transmission power indicated in the ninth information. The channel information refers to the information on the channel between the first terminal and the second network device. Since the second network device is the interference source, the channel between the first terminal and the second network device can also be called the interference channel. Optionally, the channel information can also refer to the information on the channel between the first terminal and the second terminal. It should be noted that this embodiment does not specifically limit the manner in which the first terminal obtains the channel information. Exemplarily, the first network device can not send any information on the preconfigured time-frequency resource, while the second network device or the second terminal can send a reference signal on the configured time-frequency resource. In this way, the first terminal can complete the measurement of the channel based on the reference signal received from the second network device or the second terminal on the configured time-frequency resource, and obtain the channel information.

[0285] Optionally, the ninth piece of information may indicate that the interference pattern of the second network device has changed. That is to say, when the interference pattern that causes interference to the first terminal changes in the second network device, for example, when any one or more of the scheduled time-frequency resources, the precoding matrix used, or the transmission power of the signal used change, the second network device may send information on the new interference pattern to the first terminal to instruct the first terminal to re-measure the interference.

[0286] It can be seen from this that in this embodiment, for a scenario where the channel changes slowly, such as Figure 9 as shown, the first terminal can measure the channel at intervals of a relatively long time, such as measuring the channel at the position indicated by the dashed arrow. And the second network device only needs to notify the first terminal when information on interference patterns such as the scheduled time-frequency resources, the precoding matrix used, or the transmission power of the signal used changes, without the first terminal frequently measuring the interference. Therefore, the detection power consumption of the first terminal can be effectively reduced, and the energy of the first terminal can be saved.

[0287] Optionally, the ninth piece of information is used for the first terminal to determine the interference of the third interference pattern from the second network device. That is to say, the ninth piece of information is information indicating the third interference pattern of the second network device. Further, when reporting the fourth interference information, the first terminal may also report the identifier of the third interference pattern (such as pattern ID) and / or the indication information of the seventh time-frequency resource. The identifier of the third interference pattern and the indication information of the seventh time-frequency resource can be understood as the identification information of the third interference pattern. The first terminal reporting the fourth interference information and the identification information of the third interference pattern to the first network device together enables the first network device to identify, based on the identification information of the third interference pattern, that the fourth interference information is the interference information corresponding to the third interference pattern measured by the second network device.

[0288] In this embodiment, if the second network device has multiple interference patterns, or the interference of the second network device in a future time period is uncertain, for example, it may be a combination of several interference patterns or one of several interference patterns, the second network device may send multiple pieces of information indicating the interference patterns on the sixth time-frequency resource, and the first terminal determines the interference under the multiple interference patterns respectively.

[0289] Taking the case where the second network device has two interference modes as an example, and assuming that these two interference modes are the third interference mode and the fourth interference mode respectively, the second network device can send the ninth information and the tenth information on the sixth time-frequency resource, where the ninth information corresponds to the third interference mode of the second network device, and the tenth information corresponds to the fourth interference mode of the second network device. Or rather, the ninth information is the information used to indicate the third interference mode of the second network device, and the tenth information is the information used to indicate the fourth interference mode of the second network device. Optionally, both the ninth information and the tenth information can be used to indicate that the interference mode of the second network device has changed. Optionally, the ninth information and the tenth information can be sent in the same message.

[0290] The content indicated by the ninth information can refer to the description in the above text. The tenth information can indicate one or more of the following information: the eighth time-frequency resource, the second precoding matrix, and the second transmit power. Among them, the eighth time-frequency resource is another time-frequency resource configured by the second network device for the second terminal. The second precoding matrix is another precoding matrix used by the second network device for data transmission with the second terminal. This second precoding matrix can also be understood as another precoding matrix used by the second network device for scheduling data transmission for the second terminal, or another precoding matrix used for signal transmission and reception between the second network device and the second terminal. This second precoding matrix can be indicated by the second PMI.

[0291] The second transmit power is another transmit power used by the second network device to send signals to the second terminal. This second transmit power can also be understood as the transmit power used by the second network device to instruct the second terminal to send signals, or the transmit power used for signal transmission and reception between the second network device and the second terminal. Similarly, the tenth information indicating the second transmit power can indicate either the actual transmit value or the relative value, which will not be elaborated here.

[0292] It should be noted that the second terminal involved in the tenth information and the second terminal involved in the ninth information can be the same terminal or different terminals, which is not limited.

[0293] In this way, the first terminal can determine the interference of the third interference mode and the interference of the fourth interference mode according to the ninth information and the tenth information respectively. Specifically, the first terminal can determine the fourth interference information corresponding to the third interference mode according to the channel information and the information of the third interference mode indicated in the ninth information, and determine the fifth interference information corresponding to the fourth interference mode according to the channel information and the information of the fourth interference mode indicated in the tenth information. The channel information refers to the information of the channel between the first terminal and the second network device, or can also be the information of the channel between the first terminal and the second terminal. Further, when reporting the interference information, the first terminal can report the fourth interference information corresponding to the third interference mode and the fifth interference information corresponding to the fourth interference mode, or can also report the combination of the fourth interference information and the fifth interference information. The combination of the fourth interference information and the fifth interference information can be the operation result obtained by performing a certain operation on the fourth interference information and the fifth interference information (such as the sum of the fourth interference information and the fifth interference information), or can also be one of the interference information selected from the fourth interference information and the fifth interference information, which is not limited.

[0294] It can be understood that if the first terminal reports the fourth interference information corresponding to the third interference mode and the fifth interference information corresponding to the fourth interference mode, the first terminal can also report the identification information of the third interference mode and the identification information of the fourth interference mode accordingly. The content included in the identification information of the fourth interference mode can refer to the description of the content included in the identification information of the third interference mode in the above text, which will not be elaborated here.

[0295] Optionally, when reporting the interference information to the first network device, the first terminal can also report the interference source. For example, a corresponding interference source indication can be carried in the measurement report for reporting the interference information, or the interference information can be reported at the interference reporting moment associated with the second network device (i.e., the interference source). The specific implementation manner of the first terminal reporting the interference source please refer to the description in the above text, which will not be elaborated here. It should be noted that for the first terminal to report the interference source, it is required that the first terminal has the ability to identify the interference source, or in other words, it is required that the first terminal has the ability to distinguish different interference sources. For example, the first terminal can identify the interference source according to the precoding matrix or spreading sequence or transmission power of the signal or the time-frequency resource used by the interference source. The specific manner for the first terminal to identify the interference source please refer to the description in the above text, which will not be elaborated here.

[0296] The above method can also be extended to the scenario where the second network device has more interference modes, which will not be elaborated in this application.

[0297] Optionally, the second network device may also send the eleventh information on the sixth time-frequency resource, where the eleventh information indicates a third time interval, and the third time interval is a time interval during which the first terminal does not need to detect the information indicating the interference pattern from the second network device. It can be understood that if the sixth time-frequency resource is a periodic time-frequency resource configured for the first network device, after receiving the seventh information, the first terminal will periodically detect the information indicating the interference pattern from the second network device on the sixth time-frequency resource. If the first terminal receives the eleventh information indicating the third time interval on the sixth time-frequency resource, the first terminal may stop detecting or pause detecting the information indicating the interference pattern from the second network device during the third time interval. The manner in which the eleventh information indicates the third time interval may refer to the description of the manner in which the second information indicates the first time interval in the foregoing text, and will not be elaborated here.

[0298] The third time interval can also be understood as the time period during which the interference pattern of the second network device remains unchanged after this change occurs. It should be noted that during this third time interval, the first terminal may or may not report interference, which is not limited in this application.

[0299] Optionally, the eleventh information may be sent in the same message as the ninth information, or in the same message as the ninth information and the tenth information.

[0300] It should be noted that in the embodiments of this application, the third time interval may be irrelevant to the interference pattern of the second network device, or may be relevant to the interference pattern of the second network device. The above description of the third time interval is given by taking the configuration of the third time interval being irrelevant to the interference pattern of the second network device as an example. If the third time interval is relevant to the interference pattern of the second network device, each interference pattern of the second network device may have a corresponding third time interval, and the third time interval is used to represent the time period during which the corresponding interference pattern remains unchanged, and the third time interval may also be indicated in the information used to indicate its corresponding interference pattern.

[0301] For example, the third interference pattern of the second network device may correspond to time interval 1, indicating the time period during which the third interference pattern remains unchanged, while the fourth interference pattern of the second network device may correspond to another time interval 2, indicating the time period during which the fourth interference pattern remains unchanged. In this case, one indication method is that the ninth information can also indicate the time interval 1 while indicating the third interference pattern, or it can also be understood that the time interval 1 is the information included in the third interference pattern. The tenth information can also indicate the time interval 2 while indicating the fourth interference pattern, or it can also be understood that the time interval 2 is the information included in the fourth interference pattern. In this indication method, the eleventh information may not be sent, or in other words, the time intervals corresponding to the two interference patterns are no longer indicated by the eleventh information. Another indication method is to separately send the eleventh information, which is used to indicate the time interval 1 corresponding to the third interference pattern and the time interval 2 corresponding to the fourth interference pattern.

[0302] In this embodiment, the first terminal may also have multiple interference sources. If there are multiple interference sources, the first network device may configure the same time-frequency resources for different interference sources, or may also configure different time-frequency resources. The time-frequency resources refer to the time-frequency resources used to send information indicating the interference pattern, such as the sixth time-frequency resource in the above text.

[0303] Taking the case where there are two interference sources as an example, assuming that the two interference sources are the second network device and the third network device respectively, the first network device configuring the same time-frequency resources for different interference sources means that after the first network device configures the sixth time-frequency resource for the first terminal, the second network device can send information (such as the ninth information) indicating its interference pattern on the sixth time-frequency resource, and the third network device can also send information (such as the twelfth information) indicating its new interference pattern on the sixth time-frequency resource. In this way, the first terminal can receive the ninth information from the second network device and the twelfth information from the third network device on the sixth time-frequency resource.

[0304] It should be noted that when the first network device configures the same time-frequency resources for different interference sources, the first terminal can identify different interference sources according to different precoding matrices or spreading sequences or transmission powers of the signals used in the information sent by the interference sources. For specific details, please refer to the description in the above text and will not be elaborated here.

[0305] The first network device configuring different time-frequency resources for different interference sources means that the first network device can configure the sixth time-frequency resource for the first terminal for the second network device and configure the tenth time-frequency resource for the first terminal for the third network device. Exemplarily, after determining the sixth time-frequency resource, the first network device can send the seventh information to the first terminal and send the eighth information to the second network device, where the seventh information is used to indicate the sixth time-frequency resource to the first terminal, and the eighth information is used to indicate the sixth time-frequency resource to the second network device. Similarly, after determining the tenth time-frequency resource, the first network device can send the thirteenth information to the first terminal and send the fourteenth information to the third network device, where the thirteenth information is used to indicate the tenth time-frequency resource to the first terminal, and the fourteenth information is used to indicate the tenth time-frequency resource to the third network device.

[0306] Furthermore, the second network device can send information (such as the ninth information) for indicating its interference pattern on the sixth time-frequency resource, and the third network device can send information (such as the twelfth information) for indicating its interference pattern on the tenth time-frequency resource. In this way, the first terminal can receive the ninth information from the second network device on the sixth time-frequency resource and receive the twelfth information from the third network device on the tenth time-frequency resource.

[0307] It can be understood that the main difference between the first network device configuring the same time-frequency resources for different interference sources and configuring different time-frequency resources for different interference sources lies in whether to receive the ninth information from the second network device and the twelfth information from the third network device on the same time-frequency resource or on different time-frequency resources. However, in both scenarios, the processing procedures of the first terminal after receiving the ninth information and the twelfth information can be the same.

[0308] Specifically, in this embodiment, the content indicated by the ninth piece of information can be referred to the description above and will not be elaborated. The twelfth piece of information may indicate one or more of the following information: the ninth time-frequency resource, the third precoding matrix, and the third transmit power. Among them, the ninth time-frequency resource refers to the time-frequency resource scheduled by the third network device for the third terminal accessing itself. The third precoding matrix is the precoding matrix used by the third network device and the third terminal for data transmission. This third precoding matrix can also be understood as the precoding matrix used by the third network device for the data transmission scheduled for the third terminal, or the precoding matrix used for signal transmission and reception between the third network device and the third terminal. This third precoding matrix can be indicated by the third PMI. The third transmit power is the transmit power used by the third network device to send signals to the third terminal. This third transmit power can also be understood as the transmit power used by the third network device to instruct the third terminal to send signals, or the transmit power used for signal transmission and reception between the third network device and the third terminal. Similarly, the twelfth piece of information indicating the third transmit power can indicate the actual transmit value or the relative value, which will not be elaborated.

[0309] It should be noted that similar to the second terminal, the third terminal can be a specific terminal accessing the third network device, or a collective term for one or more terminals accessing the third network device, without limitation.

[0310] Optionally, the ninth piece of information may indicate that the interference pattern of the second network device has changed, and the twelfth piece of information may indicate that the interference pattern of the third network device has changed. Thus, if the interference pattern of the second network device has changed, the second network device can send the ninth piece of information for indicating its new interference pattern on the sixth time-frequency resource. If the interference pattern of the third network device has changed, the third network device can also send the twelfth piece of information for indicating its new interference pattern on the sixth time-frequency resource or the tenth time-frequency resource. If the first terminal does not receive the ninth piece of information on the sixth time-frequency resource and does not receive the twelfth piece of information on the sixth time-frequency resource or the tenth time-frequency resource, the first terminal can consider that the interference patterns of both the second network device and the third network device have not changed.

[0311] Further, after receiving the ninth piece of information, the first terminal may determine the fourth interference information according to the channel information and the information about the interference pattern indicated in the ninth piece of information, and report the fourth interference information to the first network device. Here, the channel information refers to the information about the channel between the first terminal and the second network device, or the information about the signal between the first terminal and the second terminal. Similarly, after receiving the twelfth piece of information, the first terminal may also determine the sixth interference information according to the channel information and the information about the interference pattern indicated in the twelfth piece of information, and report the sixth interference information to the first network device. Here, the channel information refers to the information about the channel between the first terminal and the third network device, or the information about the channel between the first terminal and the third terminal.

[0312] In a scenario with two interference sources, the interference information corresponding to different interference sources can be reported separately or combined. For specific details, please refer to the description above and will not be elaborated here.

[0313] It should be noted that the above process is described by taking the case where both the second network device and the third network device have one interference pattern as an example. When the second network device or the third network device has multiple interference patterns, the method described above can also be referred to for extension. Of course, the above method can also be extended to scenarios with more interference sources and will not be elaborated here.

[0314] Embodiment 3

[0315] Please refer to Figure 10 , which is a schematic flowchart of another interference tracking method provided by an embodiment of the present application. The method includes:

[0316] Step S1001: The first network device sends the fifteenth piece of information to the first terminal, and the fifteenth piece of information indicates the eleventh time-frequency resource.

[0317] Correspondingly, the first terminal can receive the fifteenth piece of information from the first network device.

[0318] For the introduction of the first terminal, the first network device, the second network device, and the third network device, reference can be made to the relevant descriptions in Embodiment 1 or Embodiment 2, and the repeated parts will not be elaborated here.

[0319] In this embodiment, the first network device may configure the eleventh time-frequency resource for the first terminal. The eleventh time-frequency resource is used for the first terminal to receive the first reference signal from the second network device, and the first reference signal is used for the first terminal to perform interference / channel measurement.

[0320] The eleventh time-frequency resource may be a periodic time-frequency resource or a non-periodic time-frequency resource, which is not limited in this application. It can be understood that if the eleventh time-frequency resource is a periodic time-frequency resource, the first terminal can periodically detect the reference signal from the second network device on the eleventh time-frequency resource.

[0321] The manner in which the first network device configures the eleventh time-frequency resource may refer to the relevant description of the manner in which the first network device configures the first time-frequency resource in the foregoing text, and will not be elaborated here.

[0322] Optionally, in this embodiment, after determining the eleventh time-frequency resource, the first network device may further notify the eleventh time-frequency resource to the second network device, so that the second network device can send a first reference signal to the first terminal on the eleventh time-frequency resource, and the first terminal can perform interference / channel measurement based on the first reference signal. Exemplarily, the first network device may send a sixteenth piece of information to the second network device, and the sixteenth piece of information indicates the eleventh time-frequency resource. Correspondingly, the second network device can receive the sixteenth piece of information from the first network device.

[0323] Optionally, the fifteenth piece of information may further indicate whether to perform precoding on the first reference signal.

[0324] Optionally, the fifteenth piece of information may further indicate the sequence adopted by the first reference signal, that is, the transmission sequence of the first reference signal.

[0325] Step S1002: The second network device sends a first reference signal on the eleventh time-frequency resource.

[0326] Correspondingly, the first terminal receives the first reference signal from the second network device on the eleventh time-frequency resource.

[0327] Step S1003: The first terminal reports the seventh interference information measured based on the first reference signal to the first network device.

[0328] Correspondingly, the first network device can receive the seventh interference information from the first terminal.

[0329] In this embodiment, the second network device may send a first reference signal to the first terminal on the eleventh time-frequency resource, and determine whether to perform precoding on the first reference signal when sending the first reference signal according to the indication of the fifteenth piece of information.

[0330] In a possible implementation manner, the first reference signal may be NZP-CSI-RS, corresponding to the case where the first terminal knows the transmission sequence of the first reference signal.

[0331] Specifically, if the second network device performs precoding when sending the first reference signal, the channel transfer matrix measured by the first terminal based on the first reference signal received from the eleventh time-frequency resource is the seventh interference information, indicating the interference caused by the second network device to the first terminal. Furthermore, the first terminal can report the seventh interference information to the first network device. Conversely, if the second network device does not perform precoding when sending the first reference signal, the channel transfer matrix measured by the first terminal based on the first reference signal received from the eleventh time-frequency resource is the channel information, indicating the channel matrix between the second network device and the first terminal. Furthermore, the first terminal can also report the measured channel information to the first network device.

[0332] It should be noted that in the scenario where the first terminal reports the channel information to the first network device, the first network device can obtain information on one or more interference patterns such as the time-frequency resources scheduled by the second network device, the precoding matrix used, and the transmission power of the signal used. Then, based on the channel information reported by the first terminal and the information on the interference pattern of the second network device obtained, the first network device determines the interference caused by the second network device to the first terminal. Optionally, the first network device can obtain information on one or more interference patterns such as the time-frequency resources scheduled by the second network device, the precoding matrix used, and the transmission power of the signal used through a communication interface (such as the X2 interface) between the first network device and the second network device.

[0333] Adopting this technical solution, the first terminal can report the measured channel information between the first terminal and the second network device to the first network device, and the first network device determines by itself the interference caused by the second network device to the first terminal. In this way, the data volume exchanged between the first network device and the first terminal can be effectively reduced, the resource overhead of the air interface can be reduced, and the interference received by the first terminal can be accurately tracked.

[0334] In another possible implementation manner, the first reference signal can also be considered as ZP-CSI-RS, corresponding to the case where the first terminal does not know the transmission sequence of the first reference signal. That is to say, this embodiment can also work in the case where the first terminal does not know the transmission sequence of the first reference signal. Since the first network device does not send any signal on the eleventh time-frequency resource, it can be considered that ZP-CSI-RS is configured on the first time-frequency resource. In this case, what the first terminal measures based on the first reference signal received from the eleventh time-frequency resource is interference, that is, the seventh interference information. Furthermore, the first terminal can report the seventh interference information to the first network device.

[0335] It should be noted that the difference between this embodiment and the prior art is that although ZP-CSI-RS is used to measure interference in this embodiment, it is not necessary to bind an NZP-CSI-RS corresponding to the eleventh time-frequency resource for interference measurement, thereby effectively saving the resource overhead of the reference signal.

[0336] Optionally, in this embodiment, the first network device may configure the eleventh time-frequency resource according to actual requirements (such as the specific position of the frequency-domain resources scheduled by the second network device for data transmission). Specifically, if the time-frequency resources scheduled by the second network device are discrete in the frequency domain, the eleventh time-frequency resource may also be discrete in the frequency domain. For example, the eleventh time-frequency resource may include N PRBs configured discretely in the frequency domain, where N is a positive integer. Optionally, the eleventh time-frequency resource may be aligned with the time-frequency resources scheduled by the second network device in the frequency domain. Optionally, the first time-frequency resource may be the time-frequency resources among the time-frequency resources scheduled by the second network device that interfere with the first terminal. Optionally, the term "discrete" may specifically refer to at least two PRBs being discontinuous.

[0337] Exemplarily, as Figure 11 shown, if the time-frequency resources scheduled by the second network device are PRB 0, 3, 4, 9, 10, the first network device may also only configure PRB 0, 3, 4, 9, 10 when configuring the eleventh time-frequency resource. It can be understood that since the second network device does not schedule information on other PRBs outside PRB 0, 3, 4, 9, 10, it is not necessary for the first network device to also configure other PRBs for the first terminal to receive the first reference signal from the second network device, and other PRBs can be used to transmit data of the first terminal. In other words, the embodiments of the present application allow the first network device to configure discrete interference measurement resources in the frequency domain for the first terminal according to actual requirements, thereby effectively saving resource overhead. In contrast, in the prior art, if it is desired to measure the interference from RB0 to RB10, reference signals need to be sent on RB0, RB1, …, RB10.

[0338] Furthermore, if the first network device configures the first terminal for narrowband feedback, the feedback granularity of the first terminal may also be determined according to the granularity of the frequency-domain resources scheduled by the second network device for data transmission. For example, if the scheduling granularity of the second network device is one PRB, the feedback granularity of the first terminal may also be 1 PRB. The narrowband feedback means that the first terminal feeds back interference for at least one sub-band in the eleventh time-frequency resource respectively. Therefore, the feedback granularity may be understood as the size of the sub-band in the eleventh time-frequency resource, which can be represented by the number of PRBs included in the sub-band.

[0339] Specifically, the first terminal can receive the seventeenth information from the first network device or the second network device. The seventeenth information indicates the size of each sub-band in the eleventh time-frequency resource, and the size of the sub-band is related to the scheduling granularity of the second network device. In this way, the first terminal can measure the seventh interference information corresponding to each sub-band based on the first reference signal received on each sub-band in the eleventh time-frequency resource, and report the seventh interference information corresponding to each sub-band to the first network device. It can be understood that if the first terminal receives the seventeenth information from the first network device, the first network device can obtain the scheduling granularity of the second network device by interacting with the second network device.

[0340] Optionally, the scheduling granularity of the second network device refers to the granularity of the time-frequency resources for the second network device to schedule data transmission. For example, when the second network device schedules data for the second terminal, the granularity of the frequency-domain resources scheduled.

[0341] As can be seen from Table 1 in the above text, the existing feedback granularity (i.e., the size of the sub-band) is usually determined by the number of PRBs included in the BWP of the first terminal. By adopting the above technical solution, since the feedback granularity of the first terminal is related to the scheduling granularity of the second network device, the interference caused by the second network device can be more accurately fed back.

[0342] Optionally, the first reference signal corresponds to the fifth interference pattern of the second network device, and is used for the first terminal to determine the interference of the fifth interference pattern from the second network device, or the channel information corresponding to the fifth interference pattern. Correspondingly, the eleventh time-frequency resource can be regarded as the interference measurement resource corresponding to the fifth interference pattern of the second network device. Further, when reporting the seventh interference information, the first terminal may also report one or more of the following information: the identifier of the fifth interference pattern (such as pattern ID), the index of the eleventh time-frequency resource in the measurement configuration set (such as the index of the eleventh time-frequency resource in the pre-configured measurement resource set), the index of the fifth reporting configuration (such as the index of the fifth reporting configuration in the pre-configured reporting configuration set), the index of the third measurement resource set, where the fifth reporting configuration is the reporting configuration corresponding to the fifth interference pattern, and the third measurement resource set includes the eleventh time-frequency resource. One or more of these information can be understood as the identification information of the fifth interference pattern. In this way, when the first terminal reports the measured seventh interference information and the identification information of the fifth interference pattern to the first network device together, the first network device can identify that the seventh interference information reported by the first terminal is the interference information measured for the fifth interference pattern of the second network device according to the identification information of the fifth interference pattern.

[0343] Optionally, when the first terminal reports the measured seventh interference information to the first network device, it may also report the interference source. Exemplarily, the seventh interference information may be included in the third measurement report and sent to the first network device. In one implementation, the third measurement report further includes first indication information indicating the second network device, indicating that the interference source is the second network device; in another implementation, the third measurement report is sent at a first moment, and the first moment is the interference reporting moment associated with the second network device, used to implicitly indicate that the interference source is the second network device. For specific reference, please refer to the relevant descriptions above and will not be elaborated here.

[0344] If there are multiple interference patterns for the interference caused by the second network device to the first terminal, taking two interference patterns as an example, assume that these two interference patterns are respectively called the fifth interference pattern and the sixth interference pattern, then the second network device may send a first reference signal and a second reference signal to the first terminal, where the first reference signal corresponds to the fifth interference pattern and the second reference signal corresponds to the sixth interference pattern.

[0345] Optionally, the fifteenth information may further indicate whether to perform precoding on the second reference signal.

[0346] Optionally, the fifteenth information may further indicate the transmission sequence of the second reference signal.

[0347] Optionally, the time-frequency resource where the first reference signal is located is different from the time-frequency resource where the second reference signal is located, that is, the time-frequency resources used to send reference signals under different interference patterns may be different. Optionally, the fifth information may further indicate the time-frequency resource used to send the second reference signal.

[0348] Optionally, the transmission sequence of the first reference signal is different from the transmission sequence of the second reference signal. In the embodiments of the present application, the different transmission sequences of the two reference signals may include: the sequence types of the two reference signals are different, and / or, the transmitted signals of the two reference signals are different. For example, the transmission sequence of the first reference signal is different from the transmission sequence of the second reference signal may be that the sequence of the first reference signal is an m-sequence and the sequence of the second reference signal is a walsh sequence. Another example is that the transmission sequence of the first reference signal is different from the transmission sequence of the second reference signal may also mean that the sequence types of the two reference signals are the same, for example, both are m-sequences, but the transmitted signals of the two reference signals are different, such as the sequence of the first reference signal is 01001 and the sequence of the second reference signal is 10100.

[0349] Optionally, the first terminal may also have multiple interference sources. If there are multiple interference sources, the first network device may configure the same time-frequency resources for different interference sources, or may configure different time-frequency resources. The time-frequency resources refer to the time-frequency resources used to transmit reference signals, and the reference signals are used for interference / channel measurement.

[0350] If the first network device configures the same time-frequency resources for different interference sources, different interference sources can be distinguished by the sequences of the reference signals, that is, the sequences of the reference signals corresponding to different interference sources are different. For example, it may be that the sequence types of the reference signals are different and / or the transmission signals of the reference signals are different.

[0351] If the first network device configures different time-frequency resources for different interference sources, different interference sources can be distinguished by the time-frequency resources where the reference signals are located. Optionally, the sequences of the reference signals corresponding to different interference sources may be the same or different, which is not limited.

[0352] Taking the existence of two interference sources as an example, assume that the two interference sources are the second network device and the third network device respectively. If the first network device configures the same time-frequency resources for the second network device and the third network device, the first terminal can receive the first reference signal from the second network device and the third reference signal from the third network device on the eleventh time-frequency resource. The first reference signal and the third reference signal use different sequences. If the first network device configures different time-frequency resources for the second network device and the third network device, for example, configures the eleventh time-frequency resource for receiving the first reference signal for the second network device and configures the twelfth time-frequency resource for receiving the third reference signal for the third network device, the first terminal can receive the first reference signal from the second network device on the eleventh time-frequency resource and receive the third reference signal from the third network device on the twelfth time-frequency resource. Or rather, the first terminal may consider the reference signal received on the eleventh time-frequency resource as the first reference signal from the second network device, and the reference signal received on the second time-frequency resource as the third reference signal from the third network device. Optionally, the sequences used for the first reference signal and the third reference signal may be the same or different, which is not limited. Optionally, after determining the twelfth time-frequency resource, the first network device may also notify the twelfth time-frequency resource to the first terminal and the third network device. Exemplarily, the first network device may send the seventeenth information to the first terminal and send the eighteenth information to the third network device, where the seventeenth information is used to indicate the twelfth time-frequency resource to the first terminal, and the eighteenth information is used to indicate the twelfth time-frequency resource to the third network device.

[0353] Furthermore, the first terminal may report the seventh interference information measured based on the second reference signal and the ninth interference information measured based on the third reference signal to the first network device. It can be understood that when the first terminal reports the interference information, it may report the seventh interference information and the ninth interference information, or a combination of the seventh interference information and the ninth interference information. When reporting the seventh interference information and the ninth interference information, the interference sources of the seventh interference information and the ninth interference information may also be reported, which will not be elaborated here.

[0354] Embodiment 4

[0355] Please refer to Figure 12 , which is a schematic flowchart of another interference tracking method provided by an embodiment of the present application. The method includes:

[0356] Step S1201: The first network device sends the nineteenth information to the first terminal. The nineteenth information indicates the fourteenth time-frequency resource, and the fourteenth time-frequency resource is used for the first terminal to send the fourth reference signal.

[0357] Correspondingly, the first terminal receives the nineteenth information from the first network device.

[0358] For the introduction of the first terminal, the first network device, and the second network device, reference may be made to the relevant descriptions in Embodiment 1, Embodiment 2, or Embodiment 3, and the repeated parts will not be elaborated here.

[0359] The fourteenth time-frequency resource may be a periodic time-frequency resource or a non-periodic time-frequency resource, which is not limited in the present application. It can be understood that if the fourteenth time-frequency resource is a periodic time-frequency resource, the first terminal may periodically send a reference signal on the fourteenth time-frequency resource, and the reference signal is used for the second network device to measure the channel.

[0360] Optionally, the fourteenth time-frequency resource may be a time-frequency resource that is discretely configured in the frequency domain by the first network device. For example, the fourteenth time-frequency resource may include N PRBs that are discretely configured in the frequency domain, where N is a positive integer. Optionally, among the PRBs included in the fourteenth time-frequency resource, at least two PRBs are discontinuous.

[0361] The specific meaning of the discrete configuration of the fourteenth time-frequency resource is similar to the discreteness of the eleventh time-frequency resource, as Figure 11 shown, and will not be elaborated here.

[0362] Optionally, the manner in which the first network device configures the fourteenth time-frequency resource may refer to the relevant description of the manner in which the first network device configures the first time-frequency resource in the foregoing text, and will not be elaborated here.

[0363] Optionally, after determining the fourteenth time-frequency resource, the first network device may notify the second network device of the fourteenth time-frequency resource, so that the second network device can receive the fourth reference signal from the first terminal. Exemplarily, the first network device may send the twentieth information to the second network device, and the twentieth information is used to indicate the fourteenth time-frequency resource. Correspondingly, the second network device receives the twentieth information from the first network device.

[0364] Step S1202: The first terminal sends a fourth reference signal on the fourteenth time-frequency resource, and the fourth reference signal is used for channel measurement.

[0365] Correspondingly, the second network device receives the fourth reference signal from the first terminal on the fourteenth time-frequency resource.

[0366] The channel refers to the transmission channel between the second network device and the first terminal. Since the second network device is a source of interference, it can also be referred to as an interference channel.

[0367] Step S1203: The second network device sends the channel information obtained by channel measurement based on the fourth reference signal and the twenty-first information to the first network device.

[0368] Correspondingly, the first network device receives the channel information and the twenty-first information from the second network device.

[0369] The twenty-first information indicates one or more of the following information: the fifteenth time-frequency resource, the fourth precoding matrix, and the fourth transmit power. The fifteenth time-frequency resource is the time-frequency resource scheduled by the second network device for the second terminal accessing itself. The fourth precoding matrix is the precoding matrix used for data transmission between the second network device and the second terminal, or in other words, the precoding matrix for signal transmission and reception between the second network device and the second terminal. The fourth transmit power is the transmit power used for signal transmission and reception between the second network device and the second terminal. The twenty-first information can be understood as information indicating the interference mode of the second network device. The channel information may be information indicating the channel matrix between the second network device and the first terminal.

[0370] In this embodiment, the second terminal may be a specific terminal accessing the second network device, or may be a collective term for one or more terminals accessing the second network device, without limitation.

[0371] Step S1204: The first network device schedules the first terminal according to the channel information and the twenty-first information.

[0372] The main difference between this embodiment and Embodiment 3 is that, in this embodiment, the first terminal may send a reference signal, and the second network device (i.e., the interference source) measures the reference signal sent by the first terminal and sends the measured channel information and the information indicating the interference pattern to the first network device, so that the first network device determines the interference caused by the second network device to the first terminal according to the channel information and the interference pattern information sent by the second network device. With this technical solution, since the information for determining interference can be interacted through the interface between network devices to track interference, the resource overhead on the air interface can be effectively reduced.

[0373] The embodiments of the present application further provide a communication device. Please refer to Figure 13 FIG. 5, which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 1300 includes: a transceiver module 1310 and a processing module 1320. The communication device can be used to implement the functions of the terminal (such as the first terminal) involved in any of the above method embodiments. For example, the communication device can be a terminal, such as a handheld terminal or a vehicle-mounted terminal; the communication device can also be a chip or a circuit included in the terminal, or a device including the terminal, such as various types of vehicles.

[0374] The communication device can be used to implement the functions of the network device (such as the second network device or the first network device) involved in any of the above method embodiments. For example, the communication device can be a network device or a chip or a circuit included in the network device.

[0375] Exemplarily, when the communication device executes Figure 4 the operations or steps corresponding to the first terminal in the method embodiment shown in FIG. 5, the transceiver module 1310 is configured to receive the first information from the first network device, where the first information indicates the first time-frequency resource; the transceiver module 1310 is further configured to receive the second information from the second network device on the first time-frequency resource; the processing module 1320 is configured to report the first interference information measured according to the second information to the first network device through the transceiver module 1310.

[0376] In a possible design, the second information indicates the second time-frequency resource for interference measurement; the processing module 1320 is further configured to measure interference on the second time-frequency resource to obtain the first interference information.

[0377] In a possible design, the second time-frequency resource is an interference measurement resource corresponding to a first interference pattern of a second network device; the processing module 1320 is further configured to report, via the transceiver module 1310, one or more of the following information: an identifier of the first interference pattern, an index of the second time-frequency resource, an index of a first reporting configuration, and an index of a first measurement resource set; wherein, the first reporting configuration is a reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource.

[0378] In a possible design, the second information further indicates a first time interval; the processing module 1320 is further configured to stop detecting, within the first time interval, indication information indicating measurement interference from the second network device.

[0379] In a possible design, the second information further indicates a third time-frequency resource, where the third time-frequency resource is an interference measurement resource corresponding to a second interference pattern of the second network device; the processing module 1320 is further configured to report, via the transceiver module 1310, second interference information measured on the third time-frequency resource to the first network device.

[0380] In a possible design, the processing module 1320 is specifically configured to send, via the transceiver module 1310, a first measurement report to the first network device, where the first measurement report includes first interference information; the first measurement report further includes first indication information indicating the second network device; or, the first measurement report is sent at a first moment, where the first moment is an interference reporting moment associated with the second network device.

[0381] When the communication device executes Figure 4 the operations or steps corresponding to the second network device in the method embodiment shown in

[0382] the transceiver module 1310 is configured to receive third information from the first network device, where the third information indicates a first time-frequency resource; the processing module 1320 is configured to send, via the transceiver module 1310, second information for the first terminal to measure interference on the first time-frequency resource to the first terminal. Figure 4 When the communication device executes

[0383] In a possible design, the first interference information is measured by the first terminal on a second time-frequency resource, and the second time-frequency resource is an interference measurement resource corresponding to a first interference pattern of a second network device; the processing module 1320 is further configured to receive, through the transceiver module 1310, one or more of the following information: an identifier of the first interference pattern, an index of the second time-frequency resource, an index of a first reporting configuration, and an index of a first measurement resource set; wherein, the first reporting configuration is a reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource.

[0384] In a possible design, the processing module 1320 is further configured to receive, through the transceiver module 1310, second interference information reported by the first terminal, where the second interference information is interference measured by the first terminal on a third time-frequency resource according to second information, and the third time-frequency resource is an interference measurement resource corresponding to a second interference pattern of the second network device.

[0385] In a possible design, the processing module 1320 is specifically configured to receive, through the transceiver module 1310, a first measurement report from the first terminal, where the first measurement report includes the first interference information; wherein, the first measurement report further includes first indication information that indicates the second network device; or, the first measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0386] When the communication device executes Figure 8 the operations or steps corresponding to the first terminal in the method embodiment shown, the transceiver module 1310 is configured to receive ninth information from the second network device, where the ninth information indicates one or more of the following information: a seventh time-frequency resource, a first precoding matrix, and a first transmit power; wherein, the seventh time-frequency resource is a time-frequency resource scheduled by the second network device for a second terminal, the first precoding matrix is a precoding matrix used by the second network device for data transmission with the second terminal, and the first transmit power is the transmit power used by the second network device to send a signal to the second terminal; the processing module 1320 is configured to report fourth interference information obtained according to the ninth information to the first network device through the transceiver module 1310.

[0387] In a possible design, the transceiver module 1310 is further configured to receive seventh information from the first network device, where the seventh information indicates a sixth time-frequency resource; the transceiver module 1310 is specifically configured to receive the ninth information on the sixth time-frequency resource.

[0388] In a possible design, the ninth information is used to determine interference of a third interference pattern from the second network device; the processing module 1320 is further configured to report an identifier of the third interference pattern through the transceiver module 1310.

[0389] In a possible design, the transceiver module 1310 is further configured to receive, on a sixth time-frequency resource, a tenth piece of information from a second network device, where the tenth piece of information indicates one or more of the following information: an eighth time-frequency resource, a second precoding matrix, and a second transmit power; where the eighth time-frequency resource is another time-frequency resource scheduled by the second network device for a second terminal, the second precoding matrix is another precoding matrix used by the second network device for data transmission with the second terminal, the second transmit power is another transmit power used by the second network device to send a signal to the second terminal, and the tenth piece of information is used to determine interference of a fourth interference pattern from the second network device; the processing module 1320 is further configured to report, to a first network device through the transceiver module 1310, fifth interference information obtained according to the tenth piece of information.

[0390] In a possible design, the transceiver module 1310 is further configured to receive, on a sixth time-frequency resource, an eleventh piece of information from a second network device, where the eleventh piece of information indicates a third time interval, and the third time interval is a time interval during which the first terminal does not need to detect information indicating an interference pattern from the second network device, and the information indicating the interference pattern is specifically used to indicate one or more of a time-frequency resource scheduled by the second network device, a precoding matrix used, and a transmit power of a signal used.

[0391] In a possible design, the processing module 1320 is specifically configured to send, through the transceiver module 1310, a second measurement report to the first network device, where the second measurement report includes fourth interference information; the second measurement report further includes first indication information indicating the second network device; or the second measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0392] When the communication device executes Figure 8 the operations or steps corresponding to the second network device in the method embodiment shown, the transceiver module 1310 is configured to receive an eighth piece of information from a first network device, where the eighth piece of information indicates a sixth time-frequency resource; the processing module 1320 is configured to send, through the transceiver module 1310, a ninth piece of information on the sixth time-frequency resource, where the ninth piece of information indicates one or more of the following information: a seventh time-frequency resource, a first precoding matrix, and a first transmit power; where the seventh time-frequency resource is a time-frequency resource scheduled by the second network device for a second terminal, the first precoding matrix is a precoding matrix used by the second network device for data transmission with the second terminal, and the first transmit power is a transmit power used by the second network device to send a signal to the second terminal.

[0393] In a possible design, the transceiver module 1310 is further configured to send a tenth piece of information on a sixth time-frequency resource, where the tenth piece of information indicates one or more of the following information: an eighth time-frequency resource, a second precoding matrix, and a second transmission power; wherein, the eighth time-frequency resource is another time-frequency resource scheduled by the second network device for the second terminal, the second precoding matrix is another precoding matrix used for signal transmission and reception between the second network device and the second terminal, the second transmission power is another transmission power used for signal transmission and reception between the second network device and the second terminal, and the tenth piece of information is used to determine interference of a fourth interference pattern from the second network device.

[0394] In a possible design, the transceiver module 1310 is further configured to send an eleventh piece of information on a sixth time-frequency resource, where the eleventh piece of information indicates a third time interval, and the third time interval is a time interval during which the first terminal does not need to detect information indicating an interference pattern from the second network device, and the information indicating the interference pattern is specifically used to indicate one or more of the time-frequency resources scheduled by the second network device, the precoding matrix used, and the transmission power of the signal used.

[0395] When the communication device executes Figure 8 the operations or steps corresponding to the first network device in the method embodiment shown, the transceiver module 1310 is configured to send a seventh piece of information to the first terminal, where the seventh piece of information indicates a sixth time-frequency resource; the transceiver module 1310 is further configured to send an eighth piece of information to the second network device, where the eighth piece of information indicates a sixth time-frequency resource; and the processing module 1320 is configured to receive fourth interference information reported by the first terminal through the transceiver module 1310.

[0396] In a possible design, the fourth interference information is interference information of a third interference pattern from the second network device determined by the first terminal; the processing module 1320 is further configured to receive an identifier of the third interference pattern reported by the first terminal through the transceiver module 1310.

[0397] In a possible design, the processing module 1320 is further configured to receive fifth interference information reported by the first terminal through the transceiver module 1310, where the fifth interference information is interference information of a fourth interference pattern from the second network device determined by the first terminal.

[0398] In a possible design, the processing module 1320 is specifically configured to receive a second measurement report from the first terminal through the transceiver module 1310, where the second measurement report includes the fourth interference information; wherein, the second measurement report further includes first indication information, and the first indication information indicates the second network device; or, the second measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0399] In a possible design, the processing module 1320 is further configured to receive, via the transceiver module 1310, sixth interference information reported by the first terminal, where the sixth interference information is interference information determined by the first terminal from a third network device.

[0400] When the communication device executes Figure 10 the operations or steps corresponding to the first terminal in the method embodiment shown in

[0401] the transceiver module 1310 is configured to receive fifteenth information from a first network device, where the fifteenth information indicates an eleventh time-frequency resource; the transceiver module 1310 is further configured to receive a first reference signal on the eleventh time-frequency resource; the processing module 1320 is configured to report, via the transceiver module 1310, seventh interference information measured according to the first reference signal to the first network device.

[0402] In a possible design, the first reference signal corresponds to a fifth interference pattern of the second network device; the transceiver module 1310 is further configured to receive a second reference signal from the second network device, where the second reference signal corresponds to a sixth interference pattern of the second network device; the processing module 1320 is configured to report, via the transceiver module 1310, eighth interference information measured according to the second reference signal to the first network device.

[0403] In a possible design, the processing module 1320 is specifically configured to send, via the transceiver module 1310, a third measurement report to the first network device, where the third measurement report includes seventh interference information; where the third measurement report further includes first indication information indicating the second network device; or, the third measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0404] In a possible design, the transceiver module 1310 is further configured to receive a third reference signal from a third network device on the eleventh time-frequency resource; the processing module 1320 is configured to report, via the transceiver module 1310, ninth interference information measured according to the third reference signal to the first network device.

[0405] When the communication device executes Figure 10When performing the operations or steps corresponding to the second network device in the method embodiments shown, the transceiver module 1310 is configured to receive the fifteenth piece of information from the first network device, where the fifteenth piece of information indicates the eleventh time-frequency resource; the processing module 1320 is configured to send, via the transceiver module 1310, a first reference signal on the eleventh time-frequency resource, where the first reference signal is used for a first terminal to measure interference from the second network device.

[0406] In a possible design, the transceiver module 1310 is further configured to send the seventeenth piece of information to the first terminal, where the seventeenth piece of information indicates the size of a sub-band in the eleventh time-frequency resource, and the size of the sub-band is related to the scheduling granularity of the second network device.

[0407] In a possible design, the first reference signal corresponds to the fifth interference pattern of the second network device; the processing module 1320 is further configured to send, via the transceiver module 1310, a second reference signal, where the second reference signal corresponds to the sixth interference pattern of the second network device.

[0408] When the communication device executes Figure 10 the operations or steps corresponding to the first network device in the method embodiments shown, the transceiver module 1310 is configured to send the fifteenth piece of information to the first terminal, where the fifteenth piece of information indicates the eleventh time-frequency resource; the transceiver module 1310 is further configured to send the sixteenth piece of information to the second network device, where the sixteenth piece of information indicates the eleventh time-frequency resource; the processing module 1320 is configured to receive, via the transceiver module 1310, seventh interference information from the first terminal, where the seventh interference information is measured by the first terminal based on the first reference signal received from the second network device on the eleventh time-frequency resource.

[0409] In a possible design, the transceiver module 1310 is further configured to send the seventeenth piece of information to the first terminal, where the seventeenth piece of information indicates the size of a sub-band in the eleventh time-frequency resource, and the size of the sub-band is related to the scheduling granularity of the second network device; specifically, the processing module 1320 is configured to receive, via the transceiver module 1310, seventh interference information corresponding to at least one sub-band in the eleventh time-frequency resource from the first terminal, where the seventh interference information corresponding to the at least one sub-band is measured based on the first reference signal received on the at least one sub-band.

[0410] In a possible design, the first reference signal corresponds to the fourth interference pattern of the second network device; the processing module 1320 is further configured to receive, via the transceiver module 1310, eighth interference information from the first terminal, where the eighth interference information is measured by the first terminal based on the second reference signal received from the second network device, and the second reference signal corresponds to the fifth interference pattern of the second network device.

[0411] In a possible design, the processing module 1320 is specifically configured to receive, via the transceiver module 1310, a third measurement report from a first terminal, where the third measurement report includes seventh interference information; wherein, the third measurement report further includes first indication information that indicates a second network device; or, the third measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

[0412] When the communication device executes Figure 12 the operations or steps corresponding to the first terminal in the method embodiment shown in

[0413] Figure 12 the transceiver module 1310 is configured to receive nineteenth information from a first network device, where the nineteenth information indicates fourteenth time-frequency resources; the processing module 1320 is configured to send, via the transceiver module 1310, a fourth reference signal on the fourteenth time-frequency resources, where the fourth reference signal is used for channel measurement. When the communication device executes

[0414] the operations or steps corresponding to the second network device in the method embodiment shown in Figure 12When performing the operations or steps corresponding to the first network device in the method embodiments shown, the transceiver module 1310 is configured to send the nineteenth message to the first terminal, where the nineteenth message indicates the fourteenth time-frequency resource, and the fourteenth time-frequency resource is used for the first terminal to send the fourth reference signal; the transceiver module 1310 is further configured to send the twentieth message to the second network device, where the twentieth message indicates the fourteenth time-frequency resource; the processing module 1320 is configured to receive, through the transceiver module 1310, channel information and the twenty-first message from the second network device, where the channel information is obtained by the second network device through channel measurement based on the fourth reference signal, and the twenty-first message indicates one or more of the following information: the fifteenth time-frequency resource, the fourth precoding matrix, and the fourth transmit power, where the fifteenth time-frequency resource is the time-frequency resource scheduled by the second network device for the second terminal, the fourth precoding matrix is the precoding matrix used by the second network device for data transmission with the second terminal, and the fourth transmit power is the transmit power used by the second network device to send signals to the second terminal; the processing module 1320 is further configured to schedule the first terminal according to the channel information and the twenty-first message.

[0415] The processing module 1320 involved in the communication device may be implemented by at least one processor or processor-related circuit components, and the transceiver module 1310 may be implemented by at least one transceiver or transceiver-related circuit components or a communication interface. The operations and / or functions of each module in the communication device are respectively for implementing Figure 4 , Figure 8 , Figure 10 or Figure 12 the corresponding processes of the methods shown, and for the sake of brevity, they will not be elaborated here. Optionally, the communication device may further include a storage module, and the storage module may be used to store data and / or instructions. The transceiver module 1310 and / or the processing module 1320 may read the data and / or instructions in the access module, so that the communication device implements the corresponding method. The storage module may be implemented, for example, by at least one memory.

[0416] The above storage module, processing module, and transceiver module may exist separately, or all or part of the modules may be integrated. For example, the storage module and the processing module are integrated, or the processing module and the transceiver module are integrated, etc.

[0417] Please refer to Figure 14 , which is another structural schematic diagram of a communication device provided in an embodiment of the present application. The communication device may specifically be a terminal, and the communication device may be used to implement the functions of the terminal (such as the first terminal) involved in any of the above method embodiments. For ease of understanding and convenient illustration, in Figure 14 , the terminal takes a mobile phone as an example. As Figure 14As shown in the figure, the terminal includes a processor, and may also include a memory. Of course, it may also include a radio frequency circuit, an antenna, an input / output device, etc. The processor is mainly used to process communication protocols and communication data, control the terminal, execute software programs, process data of software programs, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminals may not have an input / output device.

[0418] When data needs to be sent, the processor performs baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal out in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For the convenience of description, Figure 14 only one memory and one processor are shown in the figure. In an actual terminal product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be set independently of the processor or integrated with the processor. The embodiments of the present application do not limit this.

[0419] In the embodiments of the present application, the antenna and the radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal, and the processor with processing functions can be regarded as the processing unit of the terminal. As Figure 14 shown in the figure, the terminal includes a transceiver unit 1410 and a processing unit 1420. The transceiver unit may also be referred to as a transceiver, a transceiver machine, a transceiver device, etc. The processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the devices in the transceiver unit 510 used to implement the receiving function can be regarded as the receiving unit, and the devices in the transceiver unit 1410 used to implement the sending function can be regarded as the sending unit, that is, the transceiver unit 1410 includes a receiving unit and a sending unit. The transceiver unit is sometimes also referred to as a transceiver machine, a transceiver, or a transceiver circuit, etc. The receiving unit is sometimes also referred to as a receiver, a receiver machine, or a receiving circuit, etc. The sending unit is sometimes also referred to as a transmitter, a transmitter machine, or a transmitting circuit, etc. It should be understood that the transceiver unit 1410 is used to perform the sending operation and the receiving operation on the terminal side in the above method embodiments, and the processing unit 1420 is used to perform other operations on the terminal except the transceiver operation in the above method embodiments.

[0420] Please refer to Figure 15, which is another structural schematic diagram of a communication device provided in an embodiment of the present application. The communication device may specifically be a network device, such as a base station, for implementing the functions of the network device (such as the first network device or the target network device) involved in any of the above method embodiments.

[0421] The network device 1500 includes: one or more DUs 1501 and one or more CUs 1502. Among them, the DU 1301 may include at least one antenna 15011, at least one radio frequency unit 15012, at least one processor 15013, and at least one memory 15014. The DU 1501 is mainly used for the transceiver of radio frequency signals, the conversion between radio frequency signals and baseband signals, and partial baseband processing.

[0422] The CU 1502 may include at least one processor 15022 and at least one memory 15021. The CU 1502 is mainly used for baseband processing and controlling the base station, etc. The CU 1502 is the control center of the base station and may also be referred to as a processing unit. For example, the CU 1502 may be used to control the base station to execute the above Figure 4 , Figure 8 , Figure 10 or Figure 12 the operations or steps corresponding to the first network device or the second network device in the shown method.

[0423] The CU 1502 and the DU 1501 can communicate through an interface. Among them, the control plane (CP) interface can be Fs-C, such as F1-C, and the user plane (UP) interface can be Fs-U, such as F1-U. The DU 1501 and the CU 1502 may be physically set together or physically separated (i.e., a distributed base station), which is not limited.

[0424] Specifically, the baseband processing on the CU and the DU can be divided according to the protocol layers of the wireless network. For example, the functions of the PDCP layer and above protocol layers are set on the CU, and the functions of the protocol layers below the PDCP layer (such as the RLC layer and the MAC layer, etc.) are set on the DU. Another example is that the CU implements the functions of the RRC and PDCP layers, and the DU implements the functions of the RLC, MAC, and physical (PHY) layers.

[0425] Optionally, the network device 1500 may include one or more radio units (RUs), one or more DUs, and one or more CUs. Among them, the DU may include at least one processor 15013 and at least one memory 15014. The RU may include at least one antenna 15011 and at least one radio unit 15012. The CU may include at least one processor 15022 and at least one memory 15021.

[0426] In one embodiment, the CU 1502 may be composed of one or more single boards. Multiple single boards may jointly support a radio access network with a single access indication (such as a 5G network), or may separately support radio access networks with different access systems (such as an LTE network, a 5G network, or other networks). The memory 15021 and the processor 15022 may serve one or more single boards. That is to say, a memory and a processor may be separately provided on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board. The DU 1501 may be composed of one or more single boards. Multiple single boards may jointly support a radio access network with a single access indication (such as a 5G network), or may separately support radio access networks with different access systems (such as an LTE network, a 5G network, or other networks). The memory 15017 and the processor 15016 may serve one or more single boards. That is to say, a memory and a processor may be separately provided on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board.

[0427] The embodiment of the present application further provides a chip system, including: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the chip system implements the method of the corresponding terminal or the method of the corresponding network device in any of the above method embodiments.

[0428] Optionally, the processor in the chip system may be one or more. The processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc. When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software code stored in the memory.

[0429] Optionally, the memory in the chip system may also be one or more. The memory may be integrated with the processor or may be separately provided from the processor, which is not limited in the present application. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip or may be separately provided on different chips. The present application does not make specific limitations on the type of the memory and the setting manner of the memory and the processor.

[0430] Exemplarily, the chip system may be a field programmable gate array (FPGA), may be an application specific integrated circuit (ASIC), may also be a system on chip (SoC), may also be a central processor unit (CPU), may also be a network processor (NP), may also be a digital signal processor (DSP), may also be a micro controller unit (MCU), may also be a programmable logic device (PLD) or other integrated chips.

[0431] It should be understood that each step in the above method embodiments can be completed by the integrated logic circuit in the hardware of the processor or the instructions in the form of software. The method steps disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by the hardware processor, or executed and completed by the combination of the hardware and software modules in the processor.

[0432] The embodiments of the present application further provide a computer-readable storage medium, in which computer-readable instructions are stored. When the computer reads and executes the computer-readable instructions, the computer is enabled to execute the method in any one of the above method embodiments.

[0433] The embodiments of the present application further provide a computer program product. When the computer reads and executes the computer program product, the computer is enabled to execute the method in any one of the above method embodiments.

[0434] The embodiments of the present application further provide a communication system, which includes a first network device, a second network device and a first terminal. Optionally, a third network device may also be included in the communication system. Optionally, a core network device may also be included in the communication system.

[0435] It should be understood that the processor mentioned in the embodiments of the present application may be a CPU, or may also be other general-purpose processors, DSPs, ASICs, FPGAs or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0436] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory, synchronous link dynamic random access memory, and direct memory bus random access memory.

[0437] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

[0438] It should be noted that the memory described herein is intended to include but not be limited to these and any other suitable types of memory.

[0439] It should be understood that the various numerical numbers involved in the various embodiments of the present application are only for the convenience of description for distinction. The size of the sequence numbers of the above processes or steps does not mean the order of execution. The execution order of each process or step should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0440] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0441] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0442] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0443] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0444] In addition, in each embodiment of the present application, the various functional units can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0445] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0446] In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

Claims

1. A method for interference tracking, characterized in that, the method includes: receiving first information from a first network device, the first information indicating a first time-frequency resource for transmitting indication information of measurement interference of a second network device, the first network device being a serving network device of a first terminal, and the second network device being another network device neighboring the first network device; receiving second information from the second network device on the first time-frequency resource; the second information is used to indicate that the first terminal performs interference measurement on a second time-frequency resource; reporting first interference information measured according to the second information to the first network device.

2. The method according to claim 1, characterized in that, the second information indicates the second time-frequency resource for interference measurement, and the first interference information is measured on the second time-frequency resource.

3. The method according to claim 2, characterized in that, the second information includes an index of the second time-frequency resource; or, the second information includes an index of a first reporting configuration associated with the second time-frequency resource; or, the second information includes an index of a first measurement resource set including the second time-frequency resource.

4. The method according to any one of claims 1 to 3, characterized in that, the second time-frequency resource is an interference measurement resource corresponding to a first interference pattern of the second network device; reporting the measured first interference information to the first network device further includes reporting one or more of the following information: an identifier of the first interference pattern, an index of the second time-frequency resource, an index of a first reporting configuration, and an index of a first measurement resource set; wherein, the first reporting configuration is a reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource.

5. The method according to any one of claims 1 to 3, characterized in that, the second information indicates a first time interval; the method further includes: no longer detecting indication information indicating measurement interference from the second network device within the first time interval.

6. The method according to any one of claims 1 to 3, characterized in that, the second information further indicates a third time-frequency resource, the third time-frequency resource being an interference measurement resource corresponding to a second interference pattern of the second network device; reporting the measured first interference information to the first network device further includes: reporting second interference information measured on the third time-frequency resource to the first network device.

7. The method according to any one of claims 1 to 3, characterized in that, the first interference information is sent to the first network device included in a first measurement report; the first measurement report further includes first indication information indicating the second network device; or, the first measurement report is sent at a first moment, the first moment being an interference reporting moment associated with the second network device.

8. A method for interference tracking, applied to a second network device, characterized in that, the method includes: receiving third information from a first network device, the third information indicating a first time-frequency resource for transmitting indication information of measurement interference of the second network device, the first network device being a serving network device of a first terminal, and the second network device being another network device neighboring the first network device; sending second information to the first terminal on the first time-frequency resource, the second information being used to instruct the first terminal to perform measurement interference on a second time-frequency resource.

9. The method according to claim 8, characterized in that, the second information indicates the second time-frequency resource, and the second time-frequency resource is an interference measurement resource corresponding to a first interference mode of the second network device.

10. The method according to claim 9, characterized in that, the second information includes an index of the second time-frequency resource; or, the second information includes an index of a first reporting configuration associated with the second time-frequency resource; or, the second information includes an index of a first measurement resource set including the second time-frequency resource.

11. The method according to any one of claims 8 to 10, characterized in that, the second information further indicates a first time interval, and the first time interval is a time interval during which the first terminal is not required to detect indication information of indication measurement interference from the second network device.

12. The method according to any one of claims 8 to 10, characterized in that, the second information further indicates a third time-frequency resource, and the third time-frequency resource is an interference measurement resource corresponding to a second interference mode of the second network device.

13. A method for interference tracking, characterized in that, the method includes: sending first information to a first terminal, the first information indicating a first time-frequency resource; sending third information to a second network device, the third information indicating the first time-frequency resource for transmitting indication information of measurement interference of the second network device, a first network device being a serving network device of the first terminal, and the second network device being another network device neighboring the first network device; receiving first interference information reported by the first terminal, the first interference information being obtained by the first terminal measuring interference according to second information received from the second network device on the first time-frequency resource, and the second information being used to instruct the first terminal to perform interference measurement on a second time-frequency resource.

14. The method according to claim 13, characterized in that, the first interference information is measured by the first terminal on the second time-frequency resource, and the second time-frequency resource is an interference measurement resource corresponding to a first interference mode of the second network device; the receiving the first interference information reported by the first terminal further includes receiving one or more of the following information: The identifier of the first interference pattern, the index of the second time-frequency resource, the index of the first reporting configuration, and the index of the first measurement resource set; wherein, the first reporting configuration is the reporting configuration corresponding to the first interference pattern, and the first measurement resource set includes the second time-frequency resource.

15. The method according to claim 13 or 14, wherein, the method further includes: receiving second interference information reported by the first terminal, where the second interference information is interference measured by the first terminal on a third time-frequency resource according to the second information, and the third time-frequency resource is an interference measurement resource corresponding to a second interference pattern of the second network device.

16. The method according to claim 13 or 14, wherein, the receiving the first interference information reported by the first terminal includes: receiving a first measurement report from the first terminal, where the first measurement report includes the first interference information; wherein, the first measurement report further includes first indication information indicating the second network device; or, the first measurement report is sent at a first moment, and the first moment is an interference reporting moment associated with the second network device.

17. A communication device, wherein, the device includes at least one processor, and the at least one processor is coupled to at least one memory: the at least one processor is configured to execute computer programs or instructions stored in the at least one memory, so that the device executes the method according to any one of claims 1 to 7, or so that the device executes the method according to any one of claims 8 to 12, or so that the device executes the method according to any one of claims 13 to 16.

18. A computer-readable storage medium, wherein, for storing instructions, when the instructions are executed, the method according to any one of claims 1 to 7 is implemented, or the method according to any one of claims 8 to 12 is implemented, or the method according to any one of claims 13 to 16 is implemented.

19. A communication device, wherein, includes a processor and an interface circuit; the interface circuit is configured to interact code instructions or data with the processor; the processor is configured to execute the method according to any one of claims 1 to 7, or the processor is configured to execute the method according to any one of claims 8 to 12, or the processor is configured to execute the method according to any one of claims 13 to 16.

20. A computer program product, wherein, the computer program product includes computer programs or instructions, when the computer programs or the instructions run on a computer, the method according to any one of claims 1 to 7 is implemented, or the method according to any one of claims 8 to 12 is implemented, or the method according to any one of claims 13 to 16 is implemented.

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