Communication method and apparatus

Abstract

Provided are a communication method and an apparatus. The method comprises: determining that a first time unit structure and a second time unit structure are present simultaneously in one frequency band; determining a first time unit structure, wherein the first time unit structure corresponds to a first service, and the first time unit structure comprises an uplink and downlink type in a cycle, the uplink and downlink types including uplink transmission, downlink transmission, or non-limiting uplink and downlink transmission; determining a second time unit structure on the basis of the first time unit structure, wherein the second time unit structure corresponds to a second service. The present application solves the problem of incompatibility between two time slots in the same carrier wave, reduces uplink and downlink interference, and enables normal operation.

Description

Communication method and device

[0001] This application claims priority to Chinese Patent Application No. 202410112217.5, filed with the Patent Office of China on January 26, 2024, entitled “Communication Method and Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0003] In cellular systems, enhanced mobile broadband (eMBB) services have a higher proportion of downlink time slots in the time slot allocation, making them suitable for scenarios with high downlink transmission demands. In contrast, Ambient IoT services have a higher proportion of uplink time slots in the time slot allocation, making them suitable for scenarios with high uplink transmission demands. However, in time division duplexing (TDD) mode, using two different time slot allocations on the same carrier can increase uplink and downlink interference, leading to system malfunctions. Summary of the Invention

[0004] The present application proposes a communication method and apparatus, which can solve the problem of incompatibility between two time slot ratios in the same carrier, reduce uplink and downlink interference, and enable normal operation.

[0005] In the first aspect, an embodiment of the present application provides a communication method, which includes: determining that a first time unit structure and a second time unit structure exist simultaneously in a frequency band; determining the first time unit structure, the first time unit structure corresponding to a first service, the first time unit structure including uplink and downlink types within a period, the uplink and downlink types including uplink transmission, downlink transmission or unrestricted uplink and downlink transmission; determining the second time unit structure based on the first time unit structure, the second time unit structure corresponding to the second service.

[0006] The method can be applied to the first device, including being executed by the first device, or by a component in the first device (for example, a processor, a chip, or a chip system, etc.), or by a logic module or software that can implement all or part of the functions of the first device.

[0007] Optionally, the first device may be a network device or a terminal device.

[0008] Optionally, the first time unit structure may also be called a first symbol structure, a first frame structure, or a first time slot structure, which is not limited in the embodiments of the present application.

[0009] In the above method, the above manner can solve the problem of incompatibility of two time slot ratios in the same carrier in the time division duplex TDD mode. For example, in the TDD mode, the frame ratio of the frame structure corresponding to the Ambient IOT service and the frame ratio of the frame structure corresponding to the eMBB service in the same carrier are different. That is, the second time unit structure is determined by the first time unit structure. For example, the corresponding frame structure of the eMBB service can be determined by the frame structure corresponding to the Ambient IOT service, or the frame structure corresponding to the Ambient IOT service can be determined by the frame structure corresponding to the eMBB service, so that the frame ratios corresponding to the two services in the same carrier in the TDD mode are roughly the same, thereby reducing uplink and downlink interference, thereby ensuring normal operation.

[0010] In one possible implementation, the determining of the second time unit structure based on the first time unit structure includes: when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0011] In another possible implementation, when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission includes: when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission.

[0012] In another possible implementation, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission includes: when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0013] In another possible implementation, the first time unit structure includes uplink and downlink types within a cycle, including: the first time unit structure includes uplink and downlink types of sub-time units within a cycle.

[0014] In yet another possible implementation, the method further includes: sending first indication information, where the first indication information is used to indicate the first time unit structure.

[0015] Optionally, when the first device is a network device, the first device may send a first indication message to the terminal device. In this way, the terminal device may determine the second time unit structure according to the first indication message, thereby resolving the incompatibility problem between the two time slot ratios in the same carrier in the time division duplex (TDD) mode.

[0016] In another possible implementation, the first indication information is carried in a newly added information element of downlink control information DCI, a media access control MAC control element CE, a radio resource control RRC message, or a broadcast message.

[0017] In another possible implementation, determining the second time unit structure based on the first time unit structure includes: determining that the uplink and downlink types in the second time unit structure are the same as the uplink and downlink types in the first time unit structure.

[0018] In yet another possible implementation, determining the first time unit structure includes: determining the first time unit structure based on a predefined rule.

[0019] In yet another possible implementation, the determining the first time unit structure includes: determining the first time unit structure based on a first parameter, where the first parameter includes one or more parameter values.

[0020] In yet another possible implementation, the first parameter includes a parameter value, where the parameter value represents an index of the first time unit structure in a plurality of predefined time unit structures.

[0021] In yet another possible implementation, the first parameter includes two parameter values, where the two parameter values ​​include a modulo value and an offset value.

[0022] In another possible implementation, the first service includes an Ambient IoT service, and the second service includes an enhanced mobile broadband eMBB service.

[0023] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0024] In another possible implementation, the determining of the second time unit structure based on the first time unit structure includes: determining the uplink and downlink types of the first sub-time unit in the second time unit structure; determining the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0025] In another possible implementation, the first service includes an eMBB service, and the second service includes an Ambient IoT service.

[0026] In another possible implementation, the determination of the second time unit structure based on the first time unit structure includes: determining that the uplink and downlink types of the sub-time unit of the second time unit structure and the uplink and downlink types of the sub-time unit of the first time unit structure are both the second sub-time unit of downlink transmission; determining the third sub-time unit in the second time unit structure, the uplink and downlink types of the third sub-time unit are downlink transmission, the start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same, and the third sub-time unit is used to send a downlink excitation signal, the uplink and downlink types of the second time unit structure are the same as the sub-time unit of the first time unit structure with the uplink and downlink types being uplink transmission.

[0027] For example, the downlink excitation signal may be used for charging.

[0028] In yet another possible implementation, the method further includes: sending configuration information, where the configuration information is used to configure resources for the Ambient IoT service.

[0029] In second aspect, an embodiment of the present application provides a communication method, which includes: receiving first indication information, the first indication information is used to indicate a first time unit structure, the first time unit structure corresponds to a first service, the first time unit structure includes uplink and downlink types within a period, the uplink and downlink types include uplink transmission, downlink transmission, or unrestricted uplink and downlink transmission; determining a second time unit structure based on the first time unit structure, the second time unit structure corresponds to a second service.

[0030] The method can be applied to the second device, including being executed by the second device, or by a component in the second device (for example, a processor, chip, or chip system, etc.), or by a logic module or software that can implement all or part of the functions of the second device.

[0031] Optionally, the second device may be a terminal device or an Ambient IOT device.

[0032] In the above method, the above manner can solve the problem of incompatibility of two time slot ratios in the same carrier in the time division duplex TDD mode. For example, in the TDD mode, the frame ratio of the frame structure corresponding to the Ambient IOT service and the frame ratio of the frame structure corresponding to the eMBB service in the same carrier are different. That is, the second time unit structure is determined by the first time unit structure. For example, the corresponding frame structure of the eMBB service can be determined by the frame structure corresponding to the Ambient IOT service, or the frame structure corresponding to the Ambient IOT service can be determined by the frame structure corresponding to the eMBB service, so that the frame ratios corresponding to the two services in the same carrier in the TDD mode are roughly the same, thereby reducing uplink and downlink interference, thereby ensuring normal operation.

[0033] In a possible implementation manner, the first indication information is carried in a newly added information element of downlink control information DCI, a media access control MAC control element CE, a radio resource control RRC message, or a broadcast message.

[0034] In another possible implementation, the second time unit structure is determined based on the first time unit structure, including: when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0035] In another possible implementation, when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission includes: when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission.

[0036] In another possible implementation, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission includes: when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0037] In a possible implementation, the first time unit structure includes uplink and downlink types within a cycle, including: the first time unit structure includes uplink and downlink types of sub-time units within a cycle.

[0038] In a possible implementation, determining the second time unit structure based on the first time unit structure includes: determining that the uplink and downlink types in the second time unit structure are the same as the uplink and downlink types in the first time unit structure.

[0039] In yet another possible implementation manner, the first time unit structure is determined based on a predefined rule.

[0040] In yet another possible implementation, the first time unit structure is determined based on a first parameter, where the first parameter includes one or more parameter values.

[0041] In yet another possible implementation, the first parameter includes a parameter value, where the parameter value represents an index of the first time unit structure in a plurality of predefined time unit structures.

[0042] In another possible implementation, the first parameter includes two parameter values, and the two parameter values ​​include a modulo value and an offset value. In another possible implementation, the first service includes an Ambient IoT service, and the second service includes an enhanced mobile broadband (eMBB) service.

[0043] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0044] In another possible implementation, the determining of the second time unit structure based on the first time unit structure includes: determining the uplink and downlink types of the first sub-time unit in the second time unit structure; determining the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0045] In another possible implementation, the first service includes an eMBB service, and the second service includes an Ambient IoT service.

[0046] In another possible implementation, the determination of the second time unit structure based on the first time unit structure includes: determining that the uplink and downlink types of the sub-time unit of the second time unit structure and the uplink and downlink types of the sub-time unit of the first time unit structure are both the second sub-time unit of downlink transmission; determining the third sub-time unit in the second time unit structure, the uplink and downlink types of the third sub-time unit are downlink transmission, the start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same, the third sub-time unit is used to send a downlink excitation signal, and the uplink and downlink types of the sub-time unit in the second time unit structure are the same as the uplink and downlink types of the sub-time unit in the first time unit structure.

[0047] For example, the downlink excitation signal may be used for charging.

[0048] In yet another possible implementation, the method further includes: receiving configuration information, where the configuration information is used to configure resources for the Ambient IoT service.

[0049] In a third aspect, an embodiment of the present application provides a communication method, the method including: determining that a first time unit structure and a second time unit structure exist simultaneously in a frequency band, the first time unit structure corresponds to an enhanced mobile broadband eMBB service, and the second time unit structure corresponds to a zero-power Internet of Things Ambient IoT service; determining the position of a downlink broadcast channel of the Ambient IoT service in the second time unit structure based on the first time unit structure, and the period of the downlink broadcast channel of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service.

[0050] The method can be applied to the first device, including being executed by the first device, or by a component in the first device (for example, a processor, a chip, or a chip system, etc.), or by a logic module or software that can implement all or part of the functions of the first device.

[0051] Optionally, the first device may be a network device or a terminal device.

[0052] In this method, by making the downlink broadcast channel period of the Ambient IoT service compatible with the broadcast channel period of the eMBB service, the problem of incompatibility between the two time slot ratios in the same carrier in the time division duplex (TDD) mode can be solved. For example, in the TDD mode, the frame ratio of the frame structure corresponding to the Ambient IoT service is different from the frame ratio of the frame structure corresponding to the eMBB service in the same carrier. In other words, uplink and downlink interference is reduced, thereby ensuring normal operation.

[0053] In one possible implementation, determining the position of the Ambient IoT service downlink broadcast channel in the second time unit structure based on the first time unit structure includes: determining the position of the Ambient IoT service downlink broadcast channel in the second time unit structure based on the first time unit structure and predefined design rules.

[0054] In another possible implementation, the period of the downlink broadcast channel of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service, including: the period of the downlink broadcast channel of the Ambient IoT service is the same as the period of the broadcast channel of the eMBB service.

[0055] In a fourth aspect, an embodiment of the present application provides a communication device, which includes: a processing unit and a transceiver unit, the processing unit being used to determine whether a first time unit structure and a second time unit structure exist simultaneously in a frequency band; the processing unit being used to determine the first time unit structure, the first time unit structure corresponding to a first service, the first time unit structure including uplink and downlink types within a period, the uplink and downlink types including uplink transmission, downlink transmission or unrestricted uplink and downlink transmission; the processing unit being used to determine the second time unit structure based on the first time unit structure, the second time unit structure corresponding to a second service.

[0056] In one possible implementation, determining the second time unit structure based on the first time unit structure includes: when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0057] In another possible implementation, when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission includes: when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission.

[0058] In another possible implementation, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission includes: when the uplink and downlink types in the first time unit structure are downlink transmission and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; when the uplink and downlink types in the first time unit structure are downlink transmission and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission and the uplink and downlink types in the second time unit structure are unrestricted uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission. In another possible implementation, the first time unit structure includes uplink and downlink types within a period, including: the first time unit structure includes uplink and downlink types of sub-time units within a period.

[0059] In another possible implementation, the transceiver unit is further configured to send first indication information, where the first indication information is used to indicate the first time unit structure.

[0060] In another possible implementation, the first indication information is carried in a newly added information element of downlink control information DCI, a media access control MAC control element CE, a radio resource control RRC message, or a broadcast message.

[0061] In yet another possible implementation, the processing unit is configured to determine that the uplink and downlink types in the second time unit structure are the same as the uplink and downlink types in the first time unit structure.

[0062] In yet another possible implementation, the processing unit is configured to determine the first time unit structure based on a predefined rule.

[0063] In yet another possible implementation, the processing unit is configured to determine the first time unit structure based on a first parameter, where the first parameter includes one or more parameter values.

[0064] In yet another possible implementation, the first parameter includes a parameter value, where the parameter value represents an index of the first time unit structure in a plurality of predefined time unit structures.

[0065] In another possible implementation, the first parameter includes two parameter values, and the two parameter values ​​include a modulo value and an offset value. In another possible implementation, the first service includes an Ambient IoT service, and the second service includes an enhanced mobile broadband (eMBB) service.

[0066] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0067] In another possible implementation, the processing unit is used to determine the uplink and downlink types of the first sub-time unit in the second time unit structure; the processing unit is used to determine the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0068] In another possible implementation, the first service includes an eMBB service, and the second service includes an Ambient IoT service.

[0069] In another possible implementation, the processing unit is used to determine that the uplink and downlink types of the sub-time units of the second time unit structure are the same as the uplink and downlink types of the sub-time units of the first time unit structure, which are both downlink transmission sub-time units; the processing unit is used to determine the third sub-time unit in the second time unit structure, the uplink and downlink types of the third sub-time unit are downlink transmission, the start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same, the third sub-time unit is used to send a downlink excitation signal, and the uplink and downlink types of the sub-time units in the second time unit structure are the same as the uplink and downlink types of the sub-time units in the first time unit structure.

[0070] For example, the downlink excitation signal may be used for charging.

[0071] In yet another possible implementation, the processing unit is further configured to send configuration information, where the configuration information is used to configure resources for the Ambient IoT service.

[0072] Regarding the technical effects brought about by the fourth aspect or possible implementation methods, reference may be made to the introduction to the technical effects of the first aspect or corresponding implementation methods.

[0073] In the fifth aspect, an embodiment of the present application provides a communication device, including: a processing unit and a transceiver unit, the transceiver unit is used to receive first indication information, the first indication information is used to indicate a first time unit structure, the first time unit structure corresponds to a first service, the first time unit structure includes uplink and downlink types within a period, the uplink and downlink types include uplink transmission, downlink transmission, or unrestricted uplink and downlink transmission; the processing unit is used to determine a second time unit structure based on the first time unit structure, the second time unit structure corresponds to a second service.

[0074] In another possible implementation, the first indication information is carried in a newly added information element of downlink control information DCI, a media access control MAC control element CE, a radio resource control RRC message, or a broadcast message.

[0075] In another possible implementation, the determining of the second time unit structure based on the first time unit structure includes: when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0076] In another possible implementation, when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission includes: when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission.

[0077] In another possible implementation, when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission includes: when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0078] In a possible implementation, the first time unit structure includes uplink and downlink types within a cycle, including: the first time unit structure includes uplink and downlink types of sub-time units within a cycle.

[0079] In a possible implementation manner, the processing unit is configured to determine that the uplink and downlink types in the second time unit structure are the same as the uplink and downlink types in the first time unit structure.

[0080] In yet another possible implementation manner, the first time unit structure is determined based on a predefined rule.

[0081] In yet another possible implementation, the first time unit structure is determined based on a first parameter, where the first parameter includes one or more parameter values.

[0082] In yet another possible implementation, the first parameter includes a parameter value, where the parameter value represents an index of the first time unit structure in a plurality of predefined time unit structures.

[0083] In another possible implementation, the first parameter includes two parameter values, and the two parameter values ​​include a modulo value and an offset value. In another possible implementation, the first service includes an Ambient IoT service, and the second service includes an enhanced mobile broadband (eMBB) service.

[0084] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0085] In another possible implementation, the processing unit is used to determine the uplink and downlink types of the first sub-time unit in the second time unit structure; the processing unit is used to determine the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0086] In another possible implementation, the first service includes an eMBB service, and the second service includes an Ambient IoT service.

[0087] In another possible implementation, the processing unit is used to determine that the uplink and downlink types of the sub-time units of the second time unit structure are the same as the uplink and downlink types of the sub-time units of the first time unit structure, which are both downlink transmission sub-time units; the processing unit is used to determine the third sub-time unit in the second time unit structure, the uplink and downlink types of the third sub-time unit are downlink transmission, the start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same, the third sub-time unit is used to send a downlink excitation signal, and the uplink and downlink types of the sub-time units in the second time unit structure are the same as the uplink and downlink types of the sub-time units in the first time unit structure.

[0088] For example, the downlink excitation signal may be used for charging.

[0089] In yet another possible implementation, the transceiver unit is further configured to receive configuration information, where the configuration information is used to configure resources for the Ambient IoT service.

[0090] Regarding the technical effects brought about by the fifth aspect or possible implementation methods, reference may be made to the introduction to the technical effects of the second aspect or corresponding implementation methods.

[0091] In a sixth aspect, an embodiment of the present application provides a communication device, including: a processing unit and a transceiver unit, the processing unit being configured to determine that a first time unit structure and a second time unit structure exist simultaneously in a frequency band, the first time unit structure corresponding to an enhanced mobile broadband eMBB service, and the second time unit structure corresponding to an Ambient IoT service; the processing unit being configured to determine a position of a downlink broadcast channel of the Ambient IoT service in the second time unit structure based on the first time unit structure, the period of the downlink broadcast channel of the Ambient IoT service being compatible with the period of the broadcast channel of the eMBB service.

[0092] In a possible implementation, the processing unit is configured to determine a position of the Ambient IoT service downlink broadcast channel in the second time unit structure based on the first time unit structure and a predefined design rule.

[0093] In another possible implementation, the period of the downlink broadcast channel of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service, including: the period of the downlink broadcast channel of the Ambient IoT service is the same as the period of the broadcast channel of the eMBB service.

[0094] Regarding the technical effects brought about by the sixth aspect or possible implementation methods, reference may be made to the introduction to the technical effects of the third aspect or corresponding implementation methods.

[0095] In the seventh aspect, an embodiment of the present application provides a communication device, which includes at least one processor and a communication interface, and the at least one processor calls a computer program or instruction stored in a memory to execute the method described in the first aspect or the possible implementation method of the first aspect.

[0096] In an eighth aspect, an embodiment of the present application provides a communication device, comprising at least one processor and a communication interface, wherein the at least one processor calls a computer program or instruction stored in a memory to execute the method described in the second aspect or a possible implementation method of the second aspect.

[0097] In the ninth aspect, an embodiment of the present application provides a communication device, which includes at least one processor and a communication interface, and the at least one processor calls a computer program or instruction stored in a memory to execute the method described in the third aspect or a possible implementation method of the third aspect.

[0098] In a tenth aspect, an embodiment of the present application provides a chip device, comprising at least one processor, wherein the at least one processor is configured to execute computer programs or instructions to implement the method described in any one of the above aspects.

[0099] In the eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction runs on a processor, the method described in any one of the above aspects is implemented.

[0100] In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are run on a computer, the method described in any one of the above aspects is implemented.

[0101] In the thirteenth aspect, an embodiment of the present application provides a communication system, which includes: the device as described in the seventh aspect and the device as described in the eighth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] FIG1 is a schematic diagram of the scale of IoT connections in different classification categories;

[0103] FIG2 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0104] FIG3 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0105] FIG4 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0106] FIG5 is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application;

[0107] FIG6 is a flow chart of a communication method provided in an embodiment of the present application;

[0108] FIG7 is a schematic diagram of a first time unit structure and a second time unit structure provided in an embodiment of the present application;

[0109] FIG8 is a schematic diagram of a first time unit structure provided in an embodiment of the present application;

[0110] FIG9 is a schematic diagram of determining a second time unit structure provided by an embodiment of the present application;

[0111] FIG10 is a schematic diagram of another method for determining a second time unit structure provided in an embodiment of the present application;

[0112] FIG11 is a schematic diagram of another method for determining a second time unit structure provided by an embodiment of the present application;

[0113] FIG12 is a schematic diagram of another method for determining a second time unit structure provided in an embodiment of the present application;

[0114] FIG13 is a schematic diagram of another method for determining a second time unit structure provided by an embodiment of the present application;

[0115] FIG14 is a schematic diagram of another method for determining a second time unit structure provided by an embodiment of the present application;

[0116] FIG15 is a schematic diagram of another method for determining a second time unit structure provided by an embodiment of the present application;

[0117] FIG16 is a flow chart of another communication method provided in an embodiment of the present application;

[0118] FIG17 is a flow chart of another communication method provided in an embodiment of the present application;

[0119] FIG18 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0120] FIG19 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0121] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of this application.

[0122] Internet of Things (IoT) practitioners have reached a consensus on the three different speed levels for IoT nodes: high-speed IoT, medium-speed IoT, and low-speed IoT. High-speed IoT is primarily carried by fifth-generation (5G) mobile communication technologies such as enhanced mobile broadband (eMBB), 4G Category 4+ (Category 4+), and Wireless Fidelity 6 (WiFi 6). Medium-speed IoT is currently primarily carried by 4G Category 1, 3G, and 2G. Low-speed IoT is primarily carried by narrowband cellular IoT (NB-IoT), long-range wide area network (LoRaWAN), and Bluetooth Low Energy (BLE). These different speeds also correspond to different power consumption levels, forming three distinct scenarios and correspondingly three different scales of IoT connection numbers. Figure 1 shows a schematic diagram of the scale of IoT connections in different tiers. Among them, low-speed IoT standards such as NB-IoT, LoRaWAN, and BLE can support tens of billions of connections, while medium-speed and high-speed IoT standards can only support a much smaller scale of connections than low-speed IoT. Based on the above three types of IoT scenarios, passive IoT will become the main source of hundreds of billions of IoT connections.

[0123] Main application scenarios of the Internet of Things:

[0124] Industrial sensor networks: Industrial sensor networks are primarily used in industrial production processes, such as temperature and humidity monitoring, vibration monitoring, and production line monitoring, enabling industrial automation and intelligent management. For example, by deploying zero-power sensor devices beneath the rails, they can monitor and collect rail pressure, temperature, and other information. Furthermore, these devices can be deployed in extreme environments, such as those with high and low temperatures, moving or rotating parts, high vibration, and high humidity, where battery life is limited. Logistics and warehousing: With the continued growth of the logistics industry, companies are facing increasing pressure on warehousing and labor costs. Digital management of logistics packages can not only further improve logistics and warehousing management efficiency, but also reduce high labor costs. Zero-power communication technology, which attaches communication terminal labels to the packaging of packages or goods, is used to obtain logistics information and manage the entire logistics process, making warehousing operations simpler and more efficient.

[0125] Smart wearables: After mobile phones, smart wearables are among the most promising consumer devices for large-scale applications. Currently, various wearable devices have wireless connectivity. Depending on the functional positioning of each product, they can be used in a variety of scenarios, including health monitoring, exercise monitoring, motion sensing, and mobile positioning. Zero-power communication technology aims to ultimately break free from battery constraints, achieving longer battery life, more convenient energy security, and a better user experience.

[0126] Healthcare: Portable medical devices can meet consumers' needs for home health services, but the unique characteristics of medical monitoring devices (especially implantable ones) significantly limit their application scenarios due to issues such as battery life and portable power supplies. Zero-power IoT technology can achieve extremely low power consumption. Furthermore, the lack of batteries reduces size, facilitates flexible folding, and eliminates the need for liquid immersion. This will facilitate real-time monitoring of medical device data and efficient digital management of health conditions.

[0127] Smart home: The application of zero-power communication technology in the smart home field can get rid of complex wiring, enable each terminal to be independently controlled, and achieve long-term online operation without the need for human energy intervention.

[0128] The communication method provided in the embodiment of the present application can be applied to cellular communication systems related to the third generation partnership project (3GPP), for example, fourth generation (4G) communication systems, such as long term evolution (LTE) communication systems, and can also be applied to fifth generation (5G) communication systems, such as 5G new radio (NR) communication systems, or to various future communication systems, such as sixth generation (6G) communication systems. The method provided in the embodiment of the present application can also be applied to Bluetooth systems, wireless fidelity (WiFi) systems, LoRa systems or Internet of Vehicles systems, communication systems that support the integration of multiple wireless technologies, and device-to-device (D2D) systems. The method provided in the embodiment of the present application can also be applied to satellite communication systems, wherein the satellite communication system can be integrated with the above-mentioned communication system. The wireless communication systems involved in this application also include but are not limited to: narrowband Internet of Things (NB-IoT) system, global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), or time division-synchronization code division multiple access (TD-SCDMA).

[0129] Please refer to Figure 2, which is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. The application scenario used in this application is described by taking the communication system architecture shown in Figure 2 as an example. The communication system includes a network device 201, a terminal device 202 and an auxiliary node 203. Among them, the auxiliary node 203 can be a relay, user equipment (UE), integrated access and backhaul (IAB) node, repeater, etc., and has the ability of environmental Internet of Things. During the uplink transmission process, the terminal device can send uplink data to the network device through the auxiliary node. The communication method proposed in the embodiment of the present application can be applied to the communication system described in Figure 2.

[0130] Please refer to Figure 3, which is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. The application scenario used in the present application is described using the communication system architecture shown in Figure 3 as an example. The communication system includes a network device 301, a terminal device 302, and a zero-power Internet of Things Ambient IoT device 303. Among them, the Ambient IoT device 303 can be used to receive an excitation signal or a backscattered signal. Optionally, the Ambient IoT device 303 may not be a power storage device and cannot independently generate or amplify signals. Optionally, the Ambient IoT device 303 may be a power storage device, but cannot independently generate or amplify signals. Optionally, the Ambient IoT device 303 may be a power storage device, and may also independently generate or amplify signals. Optionally, the Ambient IoT device 303 may be a power storage device, or may independently generate or amplify signals. Optionally, the Ambient IoT device 303 may be a power storage device (capacitor) or a super capacitor. The communication method proposed in the embodiment of the present application can be applied to the communication system described in Figure 3.

[0131] Please refer to Figure 4, which is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. The communication system architecture shown in Figure 4 is used as an example to illustrate the application scenario used in this application. The communication system includes a network device 401 and a zero-power Ambient IoT device 402. The communication method proposed in this embodiment of the present application can be applied to the communication system shown in Figure 4.

[0132] Please refer to Figure 5, which is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. The application scenario used in this application is described by taking the communication system architecture shown in Figure 5 as an example. The communication system includes a terminal device 501 and a zero-power Internet of Things Ambient IoT device 502. In this communication system, the terminal device 501 is a device deployed in a wireless access network to provide wireless communication functions for the zero-power Internet of Things Ambient IoT device 502. The communication method proposed in the embodiment of the present application can be applied to the communication system described in Figure 5. It should be noted that the Ambient IoT device in Figures 3 to 5 can be called a device.

[0133] The above-mentioned network device may be an access network device of a cellular system related to the 3rd Generation Partnership Project (3GPP). For example, a fourth-generation (4G) mobile communication system or a 5G mobile communication system. The network device may also be an access network device in an open access network (open RAN, O-RAN or ORAN) or a cloud radio access network (CRAN). Alternatively, the network device may also be an access network device in a communication system obtained by integrating two or more of the above communication systems.

[0134] The network equipment includes, but is not limited to, evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, macro base station, micro base station, wireless relay node, donor node, wireless controller in CRAN scenario, wireless backhaul node, transmission point (TP) or transmission and receiving point (TRP). The network equipment can also be an access network equipment in a 5G mobile communication system. For example, a next generation NodeB (gNB) in a new radio (NR) system, a TRP, a TP, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system. Alternatively, the network device may also be a network node constituting a gNB or a transmission point. For example, a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU may be configured separately or included in the same network element. For example, a BBU. The RU may be included in a radio frequency device or radio frequency unit. For example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). Alternatively, the network device may also be a server, a wearable device, a vehicle, or an on-board device. For example, in V2X technology, the network device may be a road side unit (RSU).

[0135] It should be noted that the network device can be the device or apparatus shown above, or it can be a component (for example, a chip), module, or unit in the device or apparatus shown above, and this application does not limit it specifically.

[0136] A terminal device, also known as user equipment (UE), mobile station (MS), or mobile terminal (MT), is a device that provides voice or data connectivity to users. Specifically, it includes devices that provide voice to users, devices that provide data connectivity to users, or devices that provide both voice and data connectivity to users. For example, it may include a handheld device with wireless connectivity or a processing device connected to a wireless modem. The terminal device can communicate with the core network via the radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN. Currently, terminal devices may include: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices (such as smart watches, smart bracelets, pedometers, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electric meters, etc.), intelligent robots, workshop equipment, wireless terminals in unmanned driving, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and flying devices (such as intelligent robots, hot air balloons, drones, airplanes). Terminal devices may also be other devices with terminal functions, for example, a terminal device may also be a device that functions as a terminal in D2D communication.The terminal device may also include vehicle to everything (V2X) terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, light terminal equipment (light UE), reduced capability UE (REDCAP UE), subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment (user device), drone equipment, etc. For example, it may include a mobile phone (or so-called "cellular" phone), a computer with a mobile terminal device, a portable, pocket-sized, handheld, or computer-built-in mobile device, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. Also included are limited devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power. Examples include information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), and laser scanners. In this application, terminal devices with wireless transceiver capabilities and chips that can be provided in the aforementioned terminal devices are collectively referred to as terminal devices.

[0137] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus with integrated circuits, or a chip, module or control unit in the device or apparatus shown above, and this application does not limit this specifically.

[0138] Radio Frequency Identification (RFID) is a passive IoT technology that uses radio frequency (RF) for contactless, two-way data communication. It uses RF to read and write to recording media (electronic tags or radio frequency cards), thereby achieving target identification and data exchange. However, due to its limited coverage range of approximately 10 meters, this technology is unlikely to support the trillion-level demand expected in the future. Therefore, the 3rd Generation Partnership Project (3GPP) is currently discussing the development of passive IoT technology based on cellular communications. This can reduce costs by leveraging existing large-scale cellular infrastructure, while also leveraging mature cellular communication technologies, such as interference management and mobility management, to enhance the coverage of passive IoT. However, in existing cellular communication systems, the time slot allocation for enhanced mobile broadband (eMBB) services has a higher proportion of downlink time slots, making it suitable for scenarios with high downlink transmission requirements. Meanwhile, the time slot allocation for Ambient IoT services has a higher proportion of uplink time slots, making it suitable for scenarios with high uplink transmission requirements. However, in time division duplexing (TDD) mode, using two different time slot allocations on the same carrier can increase uplink and downlink interference, resulting in system malfunction. To address the above issues, the present application proposes the following solutions.

[0139] The communication method provided in the embodiment of the present application is described in detail below in conjunction with the communication systems shown in Figures 2 to 5.

[0140] Please refer to FIG6 , which is a flow chart of a communication method provided in an embodiment of the present application. The method includes but is not limited to the following steps:

[0141] Step S601: The first device determines that a first time unit structure and a second time unit structure exist simultaneously in a frequency band.

[0142] Optionally, in the communication systems shown in Figures 2, 3 and 4, the first device is a network device; in the communication system described in Figure 5, the first device is a terminal device.

[0143] Specifically, a frequency band may refer to a frequency domain range. The first device determining that the first time unit structure and the second time unit structure coexist in a frequency band can be understood as, in time division duplex (TDD), the existence of two time unit structures in the same carrier, and the time slot ratios of the two time unit structures are different.

[0144] Optionally, the first time unit structure may include a time resource unit structure, a frame structure, a time slot structure or a symbol structure, which is not limited in the embodiments of the present application. Optionally, the sub-time unit included in the first time unit structure may be a frame, a time slot or a symbol, which is not limited in the embodiments of the present application. Optionally, the first time unit structure may also be referred to as a first frame structure, a first time slot structure, a first symbol structure, etc., which is not limited in the embodiments of the present application. The second time unit structure may include a time resource unit structure, a frame structure, a time slot structure or a symbol structure, which is not limited in the embodiments of the present application. The second time unit structure may also be referred to as a second frame structure, a second time slot structure, a second symbol structure, etc., which is not limited in the embodiments of the present application.

[0145] Optionally, the smallest sub-time unit included in the first time unit structure and the smallest sub-time unit included in the second time unit may be the same or different. In one example, please refer to Figure 7, which is a schematic diagram of a first time unit structure and a second time unit structure provided in an embodiment of the present application. The smallest sub-time unit included in the first time unit structure is a time slot, and the smallest sub-time unit included in the second time unit structure is a sub-time slot. It should be noted that, in the embodiment of the present application, the smallest sub-time unit included in the first time unit structure and the smallest sub-time unit included in the second time unit structure are the same, and the smallest sub-time units are both subframes.

[0146] Step S602: The first device determines a first time unit structure.

[0147] Specifically, the first time unit structure corresponds to the first service, and the first time unit structure includes an uplink and downlink type within a period, where the uplink and downlink type includes uplink transmission, downlink transmission, or unrestricted uplink and downlink transmission. Optionally, the first time unit structure includes an uplink and downlink type of a sub-time unit within a period, where the sub-time unit can be the smallest time unit in the first time unit structure. In one example, the sub-time unit is a symbol, that is, the first time unit structure includes an uplink and downlink type of a symbol within a period.

[0148] In an example, please refer to Figure 8, which is a schematic diagram of a first time unit structure provided in an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein subframe 1 and subframe 6 are used for downlink transmission, subframe 3-subframe 5 and subframe 8-subframe 10 are used for uplink transmission, and subframe 2 and subframe 7 are special subframes.

[0149] In a possible implementation manner, the first device sends first indication information, where the first indication information is used to indicate a first time unit structure.

[0150] Optionally, in the communication systems shown in Figures 2 and 3, the first device is a network device, and the first device sending the first indication information may be the network device sending the first indication information to the terminal device, and accordingly, the terminal device receives the first indication information; in the communication system shown in Figure 4, the first device is a network device, and the first device sending the first indication information may be the network device sending the first indication information to the Ambient IoT device; in the communication system shown in Figure 5, the first device is a terminal device, and the first device sending the first indication information may be the terminal device sending the first indication information to the Ambient IoT device.

[0151] Optionally, the first indication information may be a symbol-level / time slot-level / frame-level indication, or an indication of a new time resource unit, which is not limited in the embodiments of the present application.

[0152] Optionally, the first indication information can be carried in downlink control information (DCI), media access control (MAC) control element (CE), radio resource control (RRC) or a newly added information element in a broadcast message, which is not limited in the embodiments of the present application.

[0153] In one possible implementation, the first device determines a time unit structure, including: the first device determines the first time unit structure based on a predefined rule. The first device determines the uplink and downlink types of the first time unit structure based on the predefined rule. Optionally, the first device may send the predefined rule to the second device, and the second device may determine the first time unit structure based on the predefined rule. Optionally, the predefined rule may be carried in a newly added information element in a DCI, MAC CE, RRC or broadcast message, which is not limited in the embodiment of the present application. Optionally, the first indication information may include the predefined rule.

[0154] In one example, the predefined rule includes performing a modulo operation on the system frame number SFN mod N=0, where SFN represents the system frame number and N represents the modulo value. If the modulo value is 0, it indicates that the uplink and downlink types of the sub-time units in the first time unit structure are uplink transmissions. If the modulo value is any value other than 0, it indicates that the uplink and downlink types of the sub-time units in the first time unit structure are downlink transmissions. For example, N=4, and the first time unit structure includes 10 subframes, namely subframes 1 to 10. According to the above predefined rule, the uplink and downlink types of subframes 1 to 3, subframes 5 to 7, and subframes 9 and 10 are downlink transmissions, and the uplink and downlink types of subframes 4 and 8 are uplink transmissions. Optionally, the first device can send the predefined rule to the second device, and accordingly, the second device can determine the first time unit structure based on the predefined rule. For details, please refer to the determination of the first time unit structure by the first device based on the predefined rule, which will not be repeated here.

[0155] In another possible implementation, the first device determines a time unit structure, including: the first device determines the first time unit structure based on a first parameter, where the first parameter includes one or more parameter values.

[0156] Optionally, the first device may send the first parameter to the second device, and the second device may determine the first time unit structure based on the first parameter. Optionally, the first parameter may be carried in a newly added information element in a DCI, MAC CE, RRC, or broadcast message, which is not limited in the embodiments of the present application. Optionally, the first indication information may include the first parameter.

[0157] Among them, the first parameter includes a parameter value, which represents the index of the first time unit structure in the predefined multiple time unit structures. That is, it can be understood as a preconfigured or predefined multiple time unit structures, and the uplink and downlink types of the predefined multiple time unit structures are already configured. In one example, three time unit structures are preconfigured, namely time unit structure 1, time unit structure 2 and time unit structure 3. The index corresponding to time unit structure 1 is index 1, the index corresponding to time unit structure 2 is index 2, and the index corresponding to time unit structure 3 is index 3. The first parameter is index 1, and the first device determines that time unit structure 1 is the first time unit structure based on index 1. Optionally, the first device can send the first parameter as index 1 to the second device, and accordingly, the second device can determine the first time unit structure, i.e., time unit structure 1, based on the first parameter as index 1.

[0158] The first parameter includes two parameter values, including a modulo value and an offset value. The first device may determine the first time unit structure based on the two parameter values. Optionally, the first device may send the two parameter values ​​to the second device, and the second device may determine the first time unit structure based on the two parameter values.

[0159] In one example, the modulo value is 10 and the offset value is 5. For example, a first time unit structure includes 10 subframes, namely subframe 1 to subframe 10, and the number of subframes used for uplink transmission in the 10 subframes is 2. Based on the modulo value of 10, the offset value of 5, and the modulo value of 1, it indicates that the uplink and downlink type of the subtime units in the first time unit structure is uplink transmission. The uplink and downlink type of the subtime unit after adding the index of the subtime unit with the modulo value of 1 plus the offset value is uplink transmission. The SFN of subframe 1 is determined to be 1, 1 mod 10 = 1, so subframe 1 is used for uplink transmission. Then, the SFN of subframe 1 + the offset value = 1 + 5 = 6, so subframe 6 is used for uplink transmission, and subframes 2 to subframe 5 and subframes 7 to subframe 10 are used for downlink transmission. Optionally, the first device can send a modulo value of 10 and an offset value of 5 to the second device, and the second device determines the first time unit structure based on these two parameter values.

[0160] Step S603: The first device determines a second time unit structure based on the first time unit structure.

[0161] Specifically, the second time unit structure corresponds to the second service.

[0162] Among them, the first device determines the second time unit structure based on the first time unit structure, which may include: when the uplink and downlink types in the first time unit structure are uplink transmission, determining that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are downlink transmission, determining that the uplink and downlink types in the second time unit structure are downlink transmission.

[0163] When the uplink and downlink types in the first time unit structure are uplink transmissions, determining that the uplink and downlink types in the second time unit structure are uplink transmissions may include the following situations:

[0164] When the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determine that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determine that the uplink and downlink types in the second time unit structure are uplink transmission; when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are unrestricted uplink and downlink transmission, determine that the uplink and downlink types in the second time unit structure are uplink transmission.

[0165] It can be understood that when the uplink and downlink types in the first time unit structure are uplink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, downlink transmission, or unrestricted uplink and downlink transmission, the uplink and downlink types in the second time unit structure are determined to be uplink transmission.

[0166] When the uplink and downlink types in the first time unit structure are downlink transmissions, determining that the uplink and downlink types in the second time unit structure are downlink transmissions may include the following situations:

[0167] When the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are downlink transmission, determine that the uplink and downlink types in the second time unit structure are downlink transmission; when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are uplink transmission, determine that the uplink and downlink types in the second time unit structure are downlink transmission; or, when the uplink and downlink types in the first time unit structure are downlink transmission, and the uplink and downlink types in the second time unit structure are not limited to uplink and downlink transmission, determine that the uplink and downlink types in the second time unit structure are downlink transmission.

[0168] It can be understood that when the uplink and downlink type in the first time unit structure is downlink transmission, and the uplink and downlink type in the second time unit structure is uplink transmission, downlink transmission or unrestricted uplink and downlink transmission, it is determined that the uplink and downlink type in the second time unit structure is downlink transmission.

[0169] The following description is from two aspects. In the first aspect, the first service corresponding to the first time unit structure is an Ambient IoT service, and the second service corresponding to the second time unit structure is an eMBB service. The first device determines the second time unit structure corresponding to the eMBB service based on the first time unit structure corresponding to the Ambient IoT service. That is, the first device determines the time unit structure corresponding to the eMBB service based on the time unit structure corresponding to the Ambient IoT service. In the second aspect, the first service corresponding to the second time unit structure is an eMBB service, and the second service corresponding to the second time unit structure is an Ambient IoT service. The first device determines the second time unit structure corresponding to the Ambient IoT service based on the first time unit structure corresponding to the eMBB service. That is, the first device determines the time unit structure corresponding to the Ambient IoT service based on the time unit structure corresponding to the eMBB service.

[0170] First aspect: the first service corresponding to the first time unit structure is the Ambient IoT service, the second service corresponding to the second time unit structure is the eMBB service, and the first device determines the second time unit structure corresponding to the eMBB service based on the first time unit structure corresponding to the Ambient IoT service.

[0171] Optionally, the resources with uplink and downlink types of downlink transmission in the second time unit structure can be used for uplink transmission according to the first time unit structure, that is, the uplink and downlink types of D in the second time unit structure can be understood as U, D is downlink transmission, and U is uplink transmission; or, the resources with uplink and downlink types of uplink transmission in the second time unit structure can be used for downlink transmission according to the first time unit structure, that is, the uplink and downlink types of U in the second time unit structure can be understood as D.

[0172] In a possible implementation, the first device determines the second time unit structure based on the first time unit structure, including: determining that the uplink and downlink types in the second time unit structure are the same as the uplink and downlink types in the first time unit structure.

[0173] Optionally, the first device determines the second time unit structure based on the first time unit structure, which can be understood as the first device readjusting the second time unit structure corresponding to the existing eMBB service based on the first time unit structure corresponding to the Ambient IoT service, for example, readjusting the frame structure corresponding to the existing eMBB service based on the frame structure corresponding to the Ambient IoT service.

[0174] Specifically, when the uplink and downlink type in the second time unit structure is D, D indicates downlink transmission, and the uplink and downlink type in the first time unit structure is U, U indicates uplink transmission, then the first device also considers the uplink and downlink type D in the second time unit structure as U, and the first device can schedule uplink transmission; when the uplink and downlink type in the second time unit structure is U, U indicates uplink transmission, and the uplink and downlink type in the first time unit structure is D, D indicates downlink transmission, then the first device also considers the uplink and downlink type U in the second time unit structure as D, and the first device can schedule downlink transmission. Optionally, for terminal devices that do not support Ambient IoT services, perception is not required, and the first device itself performs circumvention processing.

[0175] In an example, please refer to Figure 9, which is a schematic diagram of determining a second time unit structure provided in an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein the uplink and downlink types of subframe 1 and subframe 6 are D, the uplink and downlink types of subframe 3-subframe 5 and subframe 8-subframe 10 are U, and subframe 2 and subframe 7 are special subframes. The second time unit structure includes 10 subframes, namely subframe 1 to subframe 10, wherein the uplink and downlink types of subframes 1 to subframe 3 and subframes 6 to subframe 8 are D, the uplink and downlink types of subframes 5 and subframe 10 are U, and subframe 4 and subframe 9 are special frames. Based on the first time unit structure, the first device determines that the uplink and downlink types of subframes 1 and subframe 6 in the second time unit structure are D, and the uplink and downlink types of subframes 3 to subframe 5 and subframes 8 to subframe 10 are U. That is, the uplink and downlink types D of subframes 3 and subframe 8 in the second time unit structure are considered to be U, and the D of subframe 2 in the second time unit structure is considered to be S, the S of subframe 4 is considered to be U, the D of subframe 7 is considered to be S, and the S of subframe 9 is considered to be U. Wherein, D represents downlink transmission and U represents uplink transmission.

[0176] In one example, please refer to Figure 10, which is another schematic diagram of determining a second time unit structure provided by an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframe 1 to subframe 10, wherein subframe 1 and subframe 6 are used for downlink transmission, subframe 3 to subframe 5 and subframe 8 to subframe 10 are used for uplink transmission, and subframe 2 and subframe 7 are special subframes. The second time unit structure includes 10 subframes, namely subframe 1 to subframe 10, wherein subframe 1 to subframe 10 do not limit uplink and downlink transmission. Then, based on the first time unit structure, the first device determines that subframe 1 and subframe 6 in the second time unit structure are used for downlink transmission, subframe 3 to subframe 5 and subframe 8 to subframe 10 are used for uplink transmission, and subframe 2 and subframe 7 are special subframes.

[0177] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0178] In another possible implementation, the first device determines the second time unit structure based on the first time unit structure, including: determining the uplink and downlink types of the first sub-time unit in the second time unit structure; and determining the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure.

[0179] This process can be understood as first determining the uplink and downlink types of some of the time unit structures corresponding to the eMBB service, and then determining the uplink and downlink types of the remaining portions based on the uplink and downlink types of the time unit structures corresponding to the Ambient IoT service. For example, the position of the broadcast channel in the second time unit structure is fixed, and the remaining portions can be determined based on the uplink and downlink types of the time unit structures corresponding to the Ambient IoT service.

[0180] The uplink and downlink types of the first sub-time unit in the second time unit structure may be predefined.

[0181] Among them, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0182] The first sub-time unit may include one or more minimum sub-time units. In an example, the first sub-time unit may include one or more symbols.

[0183] Among them, other sub-time units except the first sub-time unit in the second time unit structure may include one or more minimum sub-time units, and some sub-time units in the first time unit structure may include one or more minimum sub-time units.

[0184] The uplink and downlink types of the first sub-time unit in the second time unit structure may be determined based on a predefined design rule.

[0185] In one example, please refer to Figure 11, which is another schematic diagram of determining the second time unit structure provided by an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein the uplink and downlink types of subframe 1 and subframe 6 are D, D indicates downlink transmission, the uplink and downlink types of subframe 3-subframe 5 and subframe 8-subframe 10 are U, U indicates uplink transmission, and subframe 2 and subframe 7 are special subframes. The second time unit structure includes 10 subframes, namely subframe 1 to subframe 10, and subframe 1 to subframe 10 do not limit uplink and downlink transmission. The first device determines that the uplink and downlink types of subframe 1 and subframe 2 in the second time unit structure are D, wherein subframe 1 and subframe 2 are the first sub-time units. The first device determines that the uplink and downlink types of subframes 3 to subframe 5 and subframe 8 to subframe 10 in the first time unit structure are U, the uplink and downlink types of subframe 6 are D, and subframe 7 is a special subframe.

[0186] In another possible implementation, the first device determines the second time unit structure based on the first time unit structure, including: the first device determines a portion of the first time unit structure, and determines the second time unit structure based on the portion of the first time unit structure. In this way, signaling overhead can be saved. This process can be understood as determining the uplink and downlink types of some sub-time units in the second time unit structure based on the portion of the first time unit structure, and the uplink and downlink types of the remaining sub-time unit structures in the second time unit structure can remain unchanged.

[0187] Optionally, the first device may also send indication information to the second device, where the indication information is used to indicate a part of the first time unit structure. The second device determines the second time unit structure based on the indication information. Specifically, the first device determines the second time unit structure based on the indication information, which is not repeated here.

[0188] In one example, please refer to Figure 12, which is another schematic diagram of determining the second time unit structure provided by an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein the uplink and downlink types of subframe 1 are D, subframe 2 is a special subframe, and the uplink and downlink types of subframes 3-subframe 5 are U, where U represents uplink transmission. The first device determines a part of the first time unit structure, namely the uplink and downlink types of subframes 1-subframe 5. The second time unit structure includes 10 subframes, namely subframe 1 to subframe 10, among which the uplink and downlink types of subframes 1 to subframe 3 and subframe 6 to subframe 8 are D, the uplink and downlink types of subframe 5 and subframe 10 are U, and subframe 4 and subframe 9 are special frames. Then, based on a part of the first time unit structure, the first device determines that the uplink and downlink types of subframe 1 in the second time unit structure are D, the uplink and downlink types of subframes 3 to subframe 5 are U, and subframe 2 is a special subframe, that is, D of subframe 2 is considered to be S, that is, a special subframe, the uplink and downlink type D of subframe 3 is considered to be U, and S in subframe 4 is considered to be U. The uplink and downlink types of subframes 6 to subframe 10 in the second time unit structure remain unchanged.

[0189] In another possible implementation, the first device determines the second time unit structure based on the first time unit structure, including: the first device determines a part of the first time unit structure, and determines the second time unit structure according to the uplink and downlink types of some sub-time units in the second time unit structure, wherein the uplink and downlink types of some sub-time units in the second time unit structure are predefined.

[0190] It can be understood that the uplink and downlink types of some sub-time units in the second time unit structure are fixed, or predefined, and then the second time unit structure is determined based on the uplink and downlink types of these sub-time units and a part of the first time unit structure.

[0191] In one example, in one example, please refer to Figure 13, Figure 13 is another schematic diagram of determining the second time unit structure provided by an embodiment of the present application, the first time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein the uplink and downlink types of subframe 1 are D, subframe 2 is a special subframe, and the uplink and downlink types of subframes 3-subframe 5 are U, U represents uplink transmission, and the first device determines a part of the first time unit structure, namely the uplink and downlink types of subframes 1-subframe 5. The second time unit structure includes 10 subframes, namely subframe 1 to subframe 10, wherein the uplink and downlink types of subframe 1 and subframe 2 are predefined, which is D. The first device determines that the uplink and downlink types of subframes 3 to subframe 5 in the second time unit structure are U based on a part of the first time unit structure, that is, the uplink and downlink types of subframes 3 to subframe 5 in the first time unit structure are U, that is, D of subframe 3 in the second time unit structure is considered to be U, S of subframe 4 is considered to be U, and the uplink and downlink types of subframes 6 to subframe 10 in the second time unit structure remain unchanged.

[0192] Secondly, the first service corresponding to the second time unit structure is the eMBB service, and the second service corresponding to the second time unit structure is the Ambient IoT service. The first device determines the second time unit structure corresponding to the Ambient IoT service based on the first time unit structure corresponding to the eMBB service, that is, the first device determines the time unit structure corresponding to the Ambient IoT service based on the time unit structure corresponding to the eMBB service.

[0193] In a possible implementation, the first device determines the second time unit structure based on the first time unit structure, including: determining that the uplink and downlink types in the second time unit structure are the same as the uplink and downlink types in the first time unit structure.

[0194] Optionally, the first device determines the second time unit structure based on the first time unit structure, which can be understood as the first device readjusting the second time unit structure corresponding to the existing Ambient IoT service based on the first time unit structure corresponding to the eMBB service, for example, readjusting the frame structure corresponding to the existing Ambient IoT service based on the frame structure corresponding to the eMBB service.

[0195] Specifically, when the uplink and downlink type in the second time unit structure is D, D indicates downlink transmission, and the uplink and downlink type in the first time unit structure is U, U indicates uplink transmission, then the first device also considers the uplink and downlink type D in the second time unit structure as U, and the first device can schedule uplink transmission; when the uplink and downlink type in the second time unit structure is U, U indicates uplink transmission, and the uplink and downlink type in the first time unit structure is D, D indicates downlink transmission, then the first device also considers the uplink and downlink type U in the second time unit structure as D, and the first device can schedule downlink transmission.

[0196] In one example, please refer to Figure 14, which is another schematic diagram of determining the second time unit structure provided by an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein the uplink and downlink types of subframe 1-subframe 3 and subframe 6-subframe 8 are D, the uplink and downlink types of subframe 5 and subframe 10 are U, and subframe 4 and subframe 9 are special frames. The second time unit structure includes 10 subframes, namely subframe 1-subframe 10, wherein the uplink and downlink types of subframe 1 and subframe 6 are D, the uplink and downlink types of subframe 3-subframe 5 and subframe 8-subframe 10 are U, and subframe 2 and subframe 7 are special subframes. The first device determines that the uplink and downlink types of subframes 1 to subframes 3 and subframes 6 to subframes 8 in the second time unit structure are D, and the uplink and downlink types of subframes 5 and subframe 10 are U, based on the fact that the uplink and downlink types of subframes 1 to subframes 3 and subframes 6 to subframes 8 in the first time unit structure are D, the uplink and downlink types of subframes 5 and subframe 10 are U, and subframes 4 and subframe 9 are special frames. That is, S of subframe 2 is considered to be D, U of subframe 3 is considered to be D, U of subframe 4 is considered to be S, S of subframe 7 is considered to be D, U of subframe 8 is considered to be D, and U of subframe 9 is considered to be S, where D represents downlink transmission, U represents uplink transmission, and S represents a special subframe.

[0197] In another possible implementation, the first device determines the second time unit structure based on the first time unit structure, including: determining a second sub-time unit whose uplink and downlink types of the sub-time unit of the second time unit structure and the uplink and downlink types of the sub-time unit of the first time unit structure are both downlink transmissions; and determining a third sub-time unit in the second time unit structure.

[0198] Among them, the uplink and downlink type of the third sub-time unit is downlink transmission, and the start time of the third sub-time unit is the same as the start time of other sub-time units used for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same.

[0199] Optionally, the third sub-time unit is used to send a downlink excitation signal, which is used for charging. The uplink and downlink type of the sub-time unit in the second time unit structure is the uplink transmission sub-time unit, which is the same as the uplink and downlink type of the sub-time unit in the first time unit structure. The same sub-time unit may include the same start time and the same end time.

[0200] Optionally, the first device determines the third sub-time unit in the second time unit structure based on other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit.

[0201] Optionally, the second sub-time unit includes one or more minimum sub-time units.

[0202] Optionally, the first device may send an indication message to the Ambient IOT device, where the indication message is used to indicate that the third sub-time unit in the second time unit structure is used for charging, the uplink and downlink types of the second sub-time unit are downlink transmission, and the uplink and downlink types are sub-time units of uplink transmission. The third sub-time unit may also be configured in the Ambient IOT device for charging, that is, a charging time slot or empty resources is defined in the Ambient IOT device. Accordingly, the Ambient IOT device does not perform any processing in the charging time slot and only charges.

[0203] In one example, please refer to Figure 15, which is another schematic diagram of determining the second time unit structure provided by an embodiment of the present application. The first time unit structure includes 10 subframes, namely subframes 1 to subframes 10, wherein the uplink and downlink types of subframes 1 to subframes 3 and subframes 6 to subframes 8 are D, the uplink and downlink types of subframes 5 and subframes 10 are U, and subframes 4 and subframes 9 are special frames. The second time unit structure includes 10 subframes, namely subframes 1 to subframes 10, wherein the uplink and downlink types of subframes 1 and subframes 6 are D, the uplink and downlink types of subframes 3 to subframes 5 and subframes 8 to subframes 10 are U, and subframes 2 and subframes 7 are special subframes. The first device determines that the uplink and downlink types of the sub-time units of the second time unit structure and the uplink and downlink types of the sub-time units of the first time unit structure are both the second sub-time units for downlink transmission, and the second sub-time unit includes subframe 1 and subframe 6. Then, the third sub-time unit in the second time unit structure is determined. Since the third sub-time unit in the second time unit structure has the same start time and end time as the other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, the other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit include subframe 2 and subframe 3 as well as subframe 7 and subframe 8. Accordingly, it is determined that the third sub-time unit includes subframe 2 and subframe 3 as well as subframe 7 and subframe 8, that is, subframe 2 and subframe 3 as well as subframe 7 and subframe 8 are used to send excitation signals. The uplink and downlink types in the second time unit structure are uplink transmission sub-time units, which are the same as the uplink and downlink types in the first time unit structure, so the uplink and downlink types of subframe 5 and subframe 10 in the second time unit structure are U, which means uplink transmission.

[0204] In yet another possible implementation, the method further includes: the Ambient IoT device receiving a broadcast message from the first device.

[0205] Among them, the broadcast message is a broadcast message corresponding to the eMBB service, and the broadcast message carries the first time unit structure, that is, the time unit structure corresponding to the eMBB service.

[0206] Optionally, the Ambient IOT device may determine the second time unit structure based on the uplink and downlink types of the time unit structure corresponding to the eMBB service, that is, the uplink and downlink types of the time unit structure corresponding to the Ambient IOT service.

[0207] Optionally, the Ambient IOT device may further receive indication information from the first device, where the indication information is used to indicate a charging time slot or an empty resource, and the charging time slot is used for charging.

[0208] In yet another possible implementation, the method further includes: the first device sending configuration information.

[0209] The configuration information is used to configure resources for the Ambient IoT service.

[0210] Optionally, the first device may send configuration information to the terminal device. Optionally, the first device may also send configuration information to the Ambient IOT device.

[0211] In the method described in Figure 6, the above method can solve the problem of incompatibility of two time slot ratios in the same carrier in the time division duplex TDD mode. For example, in the TDD mode, the frame ratio of the frame structure corresponding to the Ambient IOT service and the frame ratio of the frame structure corresponding to the eMBB service in the same carrier are different. That is, the second time unit structure is determined by the first time unit structure. For example, the corresponding frame structure of the eMBB service can be determined by the frame structure corresponding to the Ambient IOT service, or the frame structure corresponding to the Ambient IOT service can be determined by the frame structure corresponding to the eMBB service, so that the frame ratios corresponding to the two services in the same carrier in the TDD mode are roughly the same, thereby reducing uplink and downlink interference, thereby ensuring normal operation.

[0212] The communication method provided in the embodiment of the present application is described in detail below in conjunction with the communication systems shown in Figures 2 to 5.

[0213] Please refer to FIG. 16 , which is a flowchart of another communication method provided in an embodiment of the present application. The method includes but is not limited to the following steps:

[0214] Step S1601: The second device receives first indication information.

[0215] In the communication systems shown in FIG. 2 and FIG. 3 , the second device may be a terminal device, and the second device receives the first indication information from the network device.

[0216] Optionally, in the communication systems shown in Figures 2 and 3, the second device is a terminal device, and the terminal device receives the first indication information from the network device; in the communication system shown in Figure 4, the second device is an Ambient IoT device, and the Ambient IoT device receives the first indication information from the network device; in the communication system shown in Figure 5, the second device is an Ambient IoT device, and the Ambient IoT device receives the first indication information from the terminal device.

[0217] The first indication information is used to indicate a first time unit structure, the first time unit structure corresponding to the first service, and the first time unit structure includes an uplink and downlink type within a period, where the uplink and downlink type includes uplink transmission, downlink transmission, or no uplink or downlink transmission. For details, please refer to the relevant description in step S602, which will not be repeated here.

[0218] Step S1602: The second device determines a second time unit structure based on the first time unit structure.

[0219] The second time unit structure corresponds to the second service. For details, please refer to the relevant description in step S603, which will not be repeated here.

[0220] In the method described in Figure 16, the above method can solve the problem of incompatibility of two time slot ratios in the same carrier in the time division duplex TDD mode. For example, in the TDD mode, the frame ratio of the frame structure corresponding to the Ambient IOT service and the frame ratio of the frame structure corresponding to the eMBB service in the same carrier are different. That is, the second time unit structure is determined by the first time unit structure. For example, the corresponding frame structure of the eMBB service can be determined by the frame structure corresponding to the Ambient IOT service, or the frame structure corresponding to the Ambient IOT service can be determined by the frame structure corresponding to the eMBB service, so that the frame ratios corresponding to the two services in the same carrier in the TDD mode are roughly the same, thereby reducing uplink and downlink interference, thereby ensuring normal operation.

[0221] Please refer to FIG. 17 , which is a flowchart of another communication method provided in an embodiment of the present application. The method includes but is not limited to the following steps:

[0222] Step S1701: The first device determines that a first time unit structure and a second time unit structure exist simultaneously in a frequency band.

[0223] The first time unit structure corresponds to the eMBB service, and the second time unit structure corresponds to the Ambient IoT service. For details, please refer to the relevant description in step S601, which will not be repeated here.

[0224] Step S1702: The first device determines a position of a downlink broadcast channel for the Ambient IoT service in a second time unit structure based on the first time unit structure.

[0225] Among them, the downlink broadcast channel period of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service. Specifically, it may mean that the downlink broadcast channel period of the Ambient IoT service is the same as the period of the broadcast channel of the eMBB service.

[0226] Optionally, the first time unit structure does not change, for example, the frame structure corresponding to the eMBB service does not change.

[0227] Optionally, initially, the uplink and downlink types in the second time unit structure may be unrestricted uplink and downlink transmission, that is, initially, the uplink and downlink types may be flexible.

[0228] Among them, the first device determines the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure based on the first time unit structure. It can be understood that the first device determines the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure based on the position of the broadcast channel in the first time unit structure. In one example, the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure is the same as the position of the broadcast channel in the first time unit structure; in another example, the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure is offset from the position of the broadcast channel in the first time unit structure by offset. Optionally, the offset can be predefined and agreed upon by the protocol, which is not limited in the embodiments of the present application.

[0229] In one possible implementation, the first device determines, based on the first time unit structure, a position of a downlink broadcast channel for an Ambient IoT service in a second time unit structure, including:

[0230] The position of the Ambient IoT service downlink broadcast channel in the second time unit structure is determined based on the first time unit structure and predefined design rules.

[0231] Optionally, the predefined design rule can be understood as the timing for the first device to send the Ambient IoT service downlink broadcast channel. For example, when the voltage jumps, the position of the Ambient IoT service downlink broadcast channel in the second time unit structure can be determined based on the first time unit structure. Accordingly, the first device can send the Ambient IoT service downlink broadcast channel at the position when the voltage jumps. Optionally, the Ambient IoT device can receive the Ambient IoT service downlink broadcast channel at the position when the voltage jumps. For another example, the first device can send the Ambient IoT service downlink broadcast channel at the position after first sending a special sequence. Optionally, the Ambient IoT device can receive the Ambient IoT service downlink broadcast channel at the position after receiving the special sequence.

[0232] In another possible implementation, the first device sends configuration information, where the configuration information is used to configure resources for the Ambient IoT service, for example, to configure an independent subband for the Ambient IoT service.

[0233] Optionally, rate matching is performed on the resource element group (RBG), channel state information-reference signal (CSIRS), and physical downlink control channel (PDCCH) related RBGs and resource elements occupied by the subband.

[0234] It should be noted that the second device determines the coexistence of the first time unit structure and the second time unit structure in a frequency band, and determines the location of the Ambient IoT service downlink broadcast channel in the second time unit structure based on the first time unit structure. For details, please refer to the relevant descriptions in steps S1701 and S1702, and will not be repeated here.

[0235] In the method described in FIG17 , by making the downlink broadcast channel period of the Ambient IoT service compatible with the broadcast channel period of the eMBB service, the problem of incompatibility between the two time slot ratios in the same carrier in the time division duplex (TDD) mode can be solved. For example, in the TDD mode, the frame ratio of the frame structure corresponding to the Ambient IoT service is different from that of the frame structure corresponding to the eMBB service in the same carrier. This reduces uplink and downlink interference, thereby ensuring normal operation.

[0236] The above describes in detail the method of the embodiment of the present application, and the following provides an apparatus of the embodiment of the present application.

[0237] Please refer to Figure 18, which is a structural diagram of a communication device 1800 provided in an embodiment of the present application. The communication device 1800 may include a processing unit 1801 and a transceiver unit 1802.

[0238] Optionally, the communication device 1800 is used to perform the actions performed by the first device in the embodiment shown in FIG6 . For details, please refer to the relevant introduction of the embodiment shown in FIG6 , which will not be expanded in detail here. For example, the communication device 1800 is used to perform the following scheme:

[0239] The processing unit is used to determine that a first time unit structure and a second time unit structure exist simultaneously in a frequency band; the processing unit is used to determine the first time unit structure, the first time unit structure corresponds to a first service, the first time unit structure includes an uplink and downlink type within a period, the uplink and downlink type includes uplink transmission, downlink transmission or unrestricted uplink and downlink transmission; the processing unit is used to determine the second time unit structure based on the first time unit structure, the second time unit structure corresponds to a second service.

[0240] In a possible implementation, the first time unit structure includes uplink and downlink types within a cycle, including: the first time unit structure includes uplink and downlink types of sub-time units within a cycle.

[0241] In another possible implementation, the transceiver unit is further configured to send first indication information, where the first indication information is used to indicate the first time unit structure.

[0242] In another possible implementation, the processing unit is used for the same uplink and downlink type in the first time unit structure as that in the second time unit structure.

[0243] In yet another possible implementation, the processing unit is configured to determine the first time unit structure based on a predefined rule.

[0244] In yet another possible implementation, the processing unit is configured to determine the first time unit structure based on a first parameter, where the first parameter includes one or more parameter values.

[0245] In yet another possible implementation, the first parameter includes a parameter value, where the parameter value represents an index of the first time unit structure in a plurality of predefined time unit structures.

[0246] In yet another possible implementation, the first parameter includes two parameter values, where the two parameter values ​​include a modulo value and an offset value.

[0247] In another possible implementation, the first service includes an Ambient IoT service, and the second service includes an enhanced mobile broadband eMBB service.

[0248] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0249] In another possible implementation, the processing unit is used to determine the uplink and downlink types of the first sub-time unit in the second time unit structure; the processing unit is used to determine the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0250] In another possible implementation, the first service includes an eMBB service, and the second service includes an Ambient IoT service.

[0251] In another possible implementation, the processing unit is used to determine that the uplink and downlink types of the sub-time units of the second time unit structure are the same as the uplink and downlink types of the sub-time units of the first time unit structure, which are both downlink transmission sub-time units; the processing unit is used to determine the third sub-time unit in the second time unit structure, the uplink and downlink types of the third sub-time unit are downlink transmission, the start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same, the third sub-time unit is used to send a downlink excitation signal, and the uplink and downlink types of the sub-time units in the second time unit structure are the same as the uplink and downlink types of the sub-time units in the first time unit structure.

[0252] In yet another possible implementation, the processing unit is further configured to send configuration information, where the configuration information is used to configure resources for the Ambient IoT service.

[0253] It should be noted that the implementation and beneficial effects of each module may also correspond to the corresponding description of the method embodiment shown in FIG6 .

[0254] Optionally, the communication device 1800 is used to perform the actions performed by the second device in the embodiment shown in FIG16 above. For details, please refer to the relevant introduction of the embodiment shown in FIG16 above, which will not be expanded in detail here. For example, the communication device 1800 is used to perform the following scheme:

[0255] The transceiver unit is used to receive first indication information, where the first indication information is used to indicate a first time unit structure, where the first time unit structure corresponds to a first service, and where the first time unit structure includes uplink and downlink types within a period, where the uplink and downlink types include uplink transmission, downlink transmission, or unrestricted uplink and downlink transmission; and the processing unit is used to determine a second time unit structure based on the first time unit structure, where the second time unit structure corresponds to a second service.

[0256] In a possible implementation, the first time unit structure includes uplink and downlink types within a cycle, including: the first time unit structure includes uplink and downlink types of sub-time units within a cycle.

[0257] In a possible implementation manner, the uplink and downlink types in the first time unit structure are the same as the uplink and downlink types in the second time unit structure.

[0258] In yet another possible implementation manner, the first time unit structure is determined based on a predefined rule.

[0259] In yet another possible implementation, the first time unit structure is determined based on a first parameter, where the first parameter includes one or more parameter values.

[0260] In yet another possible implementation, the first parameter includes a parameter value, where the parameter value represents an index of the first time unit structure in a plurality of predefined time unit structures.

[0261] In yet another possible implementation, the first parameter includes two parameter values, where the two parameter values ​​include a modulo value and an offset value.

[0262] In another possible implementation, the first service includes an Ambient IoT service, and the second service includes an enhanced mobile broadband eMBB service.

[0263] In another possible implementation, the switching between uplink transmission and downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

[0264] In another possible implementation, the processing unit is used to determine the uplink and downlink types of the first sub-time unit in the second time unit structure; the processing unit is used to determine the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit based on the first time unit structure, the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time of other sub-time units in the second time unit structure except the first sub-time unit is the same as the start time of some sub-time units in the first time unit structure, and the end time is also the same.

[0265] In another possible implementation, the first service includes an eMBB service, and the second service includes an Ambient IoT service.

[0266] In another possible implementation, the processing unit is used to determine that the uplink and downlink types of the sub-time units of the second time unit structure are the same as the uplink and downlink types of the sub-time units of the first time unit structure, which are both downlink transmission sub-time units; the processing unit is used to determine the third sub-time unit in the second time unit structure, the uplink and downlink types of the third sub-time unit are downlink transmission, the start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same, the third sub-time unit is used to send a downlink excitation signal, and the uplink and downlink types of the sub-time units in the second time unit structure are the same as the uplink and downlink types of the sub-time units in the first time unit structure.

[0267] In yet another possible implementation, the transceiver unit is further configured to receive configuration information, where the configuration information is used to configure resources for the Ambient IoT service.

[0268] It should be noted that the implementation and beneficial effects of each module can also correspond to the corresponding description of the method embodiment shown in Figure 16.

[0269] Optionally, the communication device 1800 is used to perform the actions performed by the first device in the embodiment shown in FIG17 above. For details, please refer to the relevant introduction of the embodiment shown in FIG17 above, which will not be expanded in detail here. For example, the communication device 1800 is used to perform the following scheme:

[0270] The processing unit is configured to determine that a first time unit structure and a second time unit structure exist simultaneously in a frequency band, where the first time unit structure corresponds to an enhanced mobile broadband eMBB service, and the second time unit structure corresponds to an Ambient IoT service; the processing unit is configured to determine a position of a downlink broadcast channel of the Ambient IoT service in the second time unit structure based on the first time unit structure, where the period of the downlink broadcast channel of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service.

[0271] In a possible implementation, the processing unit is configured to determine a position of the Ambient IoT service downlink broadcast channel in the second time unit structure based on the first time unit structure and a predefined design rule.

[0272] In another possible implementation, the period of the downlink broadcast channel of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service, including: the period of the downlink broadcast channel of the Ambient IoT service is the same as the period of the broadcast channel of the eMBB service.

[0273] It should be noted that the implementation and beneficial effects of each module can also correspond to the corresponding description of the method embodiment shown in Figure 17.

[0274] Please refer to Figure 19, which is a schematic diagram of the structure of another communication device 1900 provided in an embodiment of the present application. The communication device 1900 includes at least one processor 1901 and a communication interface 1903, and optionally also includes a memory 1902. The processor 1901, memory 1902, and communication interface 1903 are interconnected via a bus 1904. Optionally, the processor 1901 and the memory 1902 can be integrated together.

[0275] Memory 1902 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM). Memory 1902 is used for storing related computer programs or instructions. Communication interface 1903 is used to receive and send data.

[0276] The processor 1901 may be one or more central processing units (CPUs). When the processor 1901 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0277] The processor 1901 in the communication device 1900 is used to read the computer program or instructions stored in the memory 1902 to implement the functions of the above-mentioned processing unit, and the communication interface 1903 in the communication device 1900 is used to implement the functions of the above-mentioned transceiver unit.

[0278] An embodiment of the present application also provides a chip device, which includes at least one processor, and the at least one processor is used to call a computer program or instruction stored in a memory so that the processor executes the method provided by the above method embodiment.

[0279] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed on a processor, the method executed by the first device or the second device in the above method embodiment is implemented.

[0280] An embodiment of the present application further provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are executed on a processor, the method performed by the first device or the second device in the above method embodiment is implemented.

[0281] The present application also provides a communication system including the first device described in the above embodiment and the second device described in the above embodiment. The first device is configured to perform some or all of the operations performed by the first device described in the above method embodiment, and the second device is configured to perform some or all of the operations performed by the second device described in the above method embodiment.

[0282] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0283] The method steps in the embodiments of the present application can be implemented by hardware or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. Of course, the processor and the storage medium can also exist in a base station or a terminal as discrete components.

[0284] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0285] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0286] In the description of this application, words such as "first", "second", "S601", or "S602" are only used to distinguish the description and facilitate the context. Different sequence numbers themselves do not have specific technical meanings and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying the order of execution of operations. The execution order of each process should be determined by its function and internal logic.

[0287] In this application, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. A and B can be singular or plural. Additionally, the character " / " in this document indicates that the related objects are in an "or" relationship.

[0288] In this application, "transmission" may include the following three situations: sending of data, receiving of data, or sending of data and receiving of data. In this application, "data" may include business data and / or signaling data.

[0289] In this application, the terms "comprise" or "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process / method comprising a series of steps, or a system / product / apparatus comprising a series of units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes / methods / products / apparatus.

[0290] In the description of this application, unless otherwise specified, the number of nouns refers to "singular or plural," that is, "one or more." "At least one" means one or more. "Including at least one of the following: A, B, C" means that it may include A, or include B, or include C, or include A and B, or include A and C, or include B and C, or include A, B, and C. A, B, and C can be single or plural.

Claims

1. A communication method, characterized in that, Including: Determine that a first time unit structure and a second time unit structure coexist in a frequency band; Determine the first time unit structure, where the first time unit structure corresponds to a first service, and the first time unit structure includes uplink and downlink types within one period, and the uplink and downlink types include uplink transmission, downlink transmission, or no restriction on uplink and downlink transmission; Determine the second time unit structure based on the first time unit structure, where the second time unit structure corresponds to a second service.

2. The method according to claim 1, wherein The determining the second time unit structure based on the first time unit structure includes: When the uplink and downlink type in the first time unit structure is uplink transmission, determine that the uplink and downlink type in the second time unit structure is uplink transmission; or, When the uplink and downlink type in the first time unit structure is downlink transmission, determine that the uplink and downlink type in the second time unit structure is downlink transmission.

3. The method according to claim 2, characterized in that, The when the uplink and downlink type in the first time unit structure is uplink transmission, determine that the uplink and downlink type in the second time unit structure is uplink transmission includes: When the uplink and downlink type in the first time unit structure is uplink transmission and the uplink and downlink type of the second time unit structure is uplink transmission, determine that the uplink and downlink type in the second time unit structure is uplink transmission; When the uplink and downlink type in the first time unit structure is uplink transmission and the uplink and downlink type of the second time unit structure is downlink transmission, determine that the uplink and downlink type in the second time unit structure is uplink transmission; When the uplink and downlink type in the first time unit structure is uplink transmission and the uplink and downlink type of the second time unit structure is no restriction on uplink and downlink transmission, determine that the uplink and downlink type in the second time unit structure is uplink transmission.

4. The method according to claim 2, wherein The when the uplink and downlink type in the first time unit structure is downlink transmission, determine that the uplink and downlink type in the second time unit structure is downlink transmission includes: When the uplink and downlink type in the first time unit structure is downlink transmission and the uplink and downlink type of the second time unit structure is downlink transmission, determine that the uplink and downlink type in the second time unit structure is downlink transmission; When the uplink and downlink type in the first time unit structure is downlink transmission and the uplink and downlink type of the second time unit structure is uplink transmission, determine that the uplink and downlink type in the second time unit structure is downlink transmission; or, When the uplink and downlink type in the first time unit structure is downlink transmission and the uplink and downlink type of the second time unit structure is no restriction on uplink and downlink transmission, determine that the uplink and downlink type in the second time unit structure is downlink transmission.

5. The method according to any one of claims 1-4, characterized in that, The first time unit structure includes uplink and downlink types within one period, including: The first time unit structure includes uplink and downlink types of sub-time units within one period.

6. The method according to any one of claims 1-4, characterized in that, The method further includes: Send first indication information, where the first indication information is used to indicate the first time unit structure.

7. The method according to claim 6, characterized in that, The first indication information is carried in a new cell of downlink control information DCI, media access control MAC control element CE, radio resource control RRC message, or broadcast message.

8. The method according to claim 1 or 2, characterized in that, Determining the second time unit structure based on the first time unit structure includes: Determining that the uplink-downlink type in the second time unit structure is the same as the uplink-downlink type in the first time unit structure.

9. The method according to claim 1 or 2, characterized in that, The determining of the first time unit structure includes: Determining the first time unit structure based on predefined rules.

10. The method according to claim 1 or 2, characterized in that, The determining of the first time unit structure includes: Determining the first time unit structure based on a first parameter, where the first parameter includes one or more parameter values.

11. The method according to claim 10, wherein The first parameter includes one parameter value, and the one parameter value represents the index of the first time unit structure among a predefined plurality of time unit structures.

12. The method according to claim 10, wherein The first parameter includes two parameter values, and the two parameter values include a modulo value and an offset value.

13. The method according to claim 1 or 2, characterized in that the first service includes the zero-power consumption Internet of Things Ambient IoT service, and the second service includes the enhanced mobile broadband eMBB service.

14. The method according to claim 13, characterized in that the handover between the uplink transmission and the downlink transmission corresponding to the first time unit structure conforms to the symbol, time slot or frame boundary corresponding to the second time unit structure.

15. The method according to claim 13, wherein The determining of the second time unit structure based on the first time unit structure includes: Determining the uplink-downlink type of the first sub-time unit in the second time unit structure; Based on the first time unit structure, determining the uplink-downlink types of other sub-time units in the second time unit structure except the first sub-time unit. The uplink-downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink-downlink types of some sub-time units in the first time unit structure, and the start time and the end time of other sub-time units in the second time unit structure except the first sub-time unit are the same as the start time and the end time of some sub-time units in the first time unit structure.

16. The method according to claim 1 or 2, characterized in that the first service includes the eMBB service, and the second service includes the AmbientIoT service.

17. The method according to claim 16, wherein The determining of the second time unit structure based on the first time unit structure includes: Determining a second sub-time unit in the second time unit structure, where the uplink-downlink types of the sub-time units in the second time unit structure and the sub-time units in the first time unit structure are both downlink transmissions; Determining a third sub-time unit in the second time unit structure. The uplink-downlink type of the third sub-time unit is downlink transmission, and the start time and the end time of the third sub-time unit are the same as the start time and the end time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit. The third sub-time unit is used to send a downlink excitation signal, and the sub-time units with uplink-downlink type of uplink transmission in the second time unit structure are the same as the sub-time units with uplink-downlink type of uplink transmission in the first time unit structure.

18. The method according to claim 16, wherein The method further includes: Send configuration information, where the configuration information is used to configure resources for the AmbientIoT service.

19. A communication method, characterized in that, Including: Receive first indication information, where the first indication information is used to indicate a first time unit structure, the first time unit structure corresponds to a first service, the first time unit structure includes uplink and downlink types within one period, and the uplink and downlink types include uplink transmission, downlink transmission, or no restriction on uplink and downlink transmission; Determine a second time unit structure based on the first time unit structure, where the second time unit structure corresponds to a second service.

20. The method according to claim 19, wherein The determining the second time unit structure based on the first time unit structure includes: When the uplink and downlink type in the first time unit structure is uplink transmission, determine that the uplink and downlink type in the second time unit structure is uplink transmission; or, When the uplink and downlink type in the first time unit structure is downlink transmission, determine that the uplink and downlink type in the second time unit structure is downlink transmission.

21. The method according to claim 19 or 20, characterized in that, The determining the second time unit structure based on the first time unit structure includes: Determine that the uplink and downlink type in the second time unit structure is the same as the uplink and downlink type in the first time unit structure.

22. The method according to claim 19 or 20, wherein The first time unit structure is determined based on a predefined rule.

23. The method according to claim 19 or 20, wherein The first time unit structure is determined based on a first parameter, and the first parameter includes one or more parameter values.

24. The method according to claim 19 or 20, wherein The first service includes the zero-power consumption Internet of Things Ambient IoT service, and the second service includes the enhanced mobile broadband eMBB service.

25. The method according to claim 24, wherein The determining the second time unit structure based on the first time unit structure includes: Determine the uplink and downlink type of the first sub-time unit in the second time unit structure; Based on the first time unit structure, determine the uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit. The uplink and downlink types of other sub-time units in the second time unit structure except the first sub-time unit are the same as the uplink and downlink types of some sub-time units in the first time unit structure, and the start time and end time of other sub-time units in the second time unit structure except the first sub-time unit are the same as the start time and end time of some sub-time units in the first time unit structure.

26. The method according to claim 19 or 20, wherein The first service includes the eMBB service, and the second service includes the AmbientIoT service.

27. The method according to claim 26, wherein The determining the second time unit structure based on the first time unit structure includes: Determine a second sub-time unit in the second time unit structure where the uplink and downlink types of the sub-time units in the second time unit structure and the uplink and downlink types of the sub-time units in the first time unit structure are both downlink transmission; Determine a third sub-time unit in the second time unit structure, where the uplink and downlink type of the third sub-time unit is downlink transmission. The start time of the third sub-time unit is the same as the start time of other sub-time units for downlink transmission in the first time unit structure except the second sub-time unit, and the end time is also the same. The third sub-time unit is used to send a downlink excitation signal. The uplink and downlink type of the sub-time unit with uplink transmission in the second time unit structure is the same as that of the sub-time unit with uplink transmission in the first time unit structure.

28. A communication method, characterized in that, Include: Determine that a first time unit structure and a second time unit structure coexist in a frequency band. The first time unit structure corresponds to the enhanced mobile broadband (eMBB) service, and the second time unit structure corresponds to the zero-power consumption Internet of Things (Ambient IoT) service; Based on the first time unit structure, determine the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure. The period of the downlink broadcast channel of the Ambient IoT service is compatible with the period of the broadcast channel of the eMBB service.

29. The method according to claim 28, wherein The determining the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure based on the first time unit structure includes: Based on the first time unit structure and predefined design rules, determine the position of the downlink broadcast channel of the Ambient IoT service in the second time unit structure.

30. The method according to claim 28 or 29, characterized in that, The period of the downlink broadcast channel of the Ambient IoT service being compatible with the period of the broadcast channel of the eMBB service includes: The period of the downlink broadcast channel of the Ambient IoT service is the same as the period of the broadcast channel of the eMBB service.

Images