Communication method and related device

Abstract

The embodiment of the invention provides a communication method and a related device, which are used for improving time-frequency synchronization performance and / or reducing power consumption of a first communication device. The first communication device comprises a first module for data transmission and a second module for waking up the first module; the method comprises the following steps: receiving a first synchronization signal from a second communication device on a first time domain resource through a second module, wherein the first synchronization signal is used for performing time-frequency synchronization on the first communication device and the second communication device; monitoring a first wake-up signal from a second communication device at a first wake-up signal opportunity through a second module, wherein a time interval between the first time domain resource and a second time domain resource occupied by the first wake-up signal opportunity is not less than a first duration; the time interval between the first time domain resource and a second time domain resource occupied by the first wake-up signal is used for the second module to adjust the sampling rate; and determining whether to wake up the first module according to the first wake-up signal.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0002] To reduce the power consumption of terminal devices, the research topic of low power wake-up signal (LP-WUS) was introduced in releases 18 and 19 of the New Radio (NR) system. The aim is to study ways to reduce the power consumption of terminal devices in various radio resource control (RRC) states.

[0003] Currently, network devices can send a low-power synchronization signal (LP-SS), which terminal devices then use to synchronize their time and frequency with the network device. The network device then sends an LP-WUS signal to the terminal device to wake it up. However, how the network device should send LP-SS and LP-WUS to improve time and frequency synchronization performance and / or reduce the power consumption of the terminal device is a question worth considering. Summary of the Invention

[0004] This application provides a communication method and related apparatus for improving time-frequency synchronization performance and / or reducing the power consumption of a first communication device. For example, the first communication device can use a higher sampling rate to receive a first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive a first wake-up signal to reduce its power consumption. For instance, the first communication device can reduce its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and then receive the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. As another example, the first communication device can increase its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and receive the first synchronization signal using the increased sampling rate to achieve better time-frequency synchronization.

[0005] This application provides a communication method, which can be applied to, for example, executed by, a first communication device. The first communication device can be a terminal device, or a component within the terminal device (e.g., a processor, chip, or chip system), or a logic module or software capable of implementing all or part of the terminal device's functions. The first communication device includes a first module for data transmission and a second module for waking up the first module. The method includes: the first communication device receiving a first synchronization signal from the second communication device via the second module on a first time domain resource, the first synchronization signal being used for time-frequency synchronization between the first and second communication devices; the first communication device monitoring the first wake-up signal from the second communication device via the second module at a first wake-up signal timing, the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing not less than a first duration; the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing being used by the second module to adjust the sampling rate; and the first communication device determining whether to wake up the first module based on the first wake-up signal.

[0006] In the above technical solution, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is not less than the first duration; the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is used for the second module to adjust the sampling rate. This is beneficial for improving time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce its power consumption. For example, the first communication device can reduce its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and then receive the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. Alternatively, the first communication device can increase its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and receive the first synchronization signal using the increased sampling rate to achieve better time-frequency synchronization.

[0007] Based on the first aspect, in one possible implementation, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is not less than a first duration, including: the first time-domain resource is after the second time-domain resource, and the time interval between the start time-domain position of the first time-domain resource being occupied and the end time-domain position of the second time-domain resource being occupied is not less than the first duration; or, the first time-domain resource is before the second time-domain resource, and the time interval between the end time-domain position of the first time-domain resource being occupied and the start time-domain position of the second time-domain resource being occupied is not less than the first duration. Two possible implementations of the positional relationship between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal are shown. This enriches the applicable scenarios of the solution. Specifically, it could be that the first communication device receives the first wake-up signal before receiving the first synchronization signal; or, the first communication device receives the first synchronization signal before receiving the first wake-up signal.

[0008] Based on the first aspect, in one possible implementation, the method further includes: the first communication device monitoring a second wake-up signal from the second communication device at the second wake-up signal timing; wherein the time interval between the third time-domain resource occupied by the second wake-up signal timing and the first time-domain resource is not less than a second duration, the first time-domain resource precedes the second time-domain resource and follows the third time-domain resource, or the first time-domain resource precedes the third time-domain resource and follows the second time-domain resource, and the time interval between the third time-domain resource occupied by the second wake-up signal timing and the first time-domain resource is used by the second module to adjust the sampling rate. In this implementation, the first communication device also receives the second wake-up signal before or after receiving the first synchronization signal. Therefore, the time interval between the third time-domain resource occupied by the second wake-up signal timing and the first time-domain resource is used by the second module to adjust the sampling rate. This is beneficial for the first communication device to better perform time-frequency synchronization through the first synchronization signal and / or reduce the power consumption of the first communication device.

[0009] Based on the first aspect, in one possible implementation, the first synchronization signal corresponds to multiple transmission directions, and the time interval between the start time domain resource occupied by the first synchronization signal transmitted in the first transmission direction and the end time domain position of the second time domain resource is not less than the first duration; or, the time interval between the end time domain position of the first synchronization signal transmitted in the last transmission direction and the start time domain position of the second time domain resource is not less than the first duration. In the scenario where the first synchronization signal corresponds to multiple transmission directions, the positional relationship between the first time domain resource and the second time domain resource occupied by the first synchronization signal is further defined. This achieves signal coverage in multiple transmission directions, facilitating time-frequency synchronization of terminal devices in multiple transmission directions.

[0010] Based on the first aspect, in one possible implementation, the first wake-up signal timing includes a first monitoring timing and a second monitoring timing. The first monitoring timing is used to monitor a second synchronization signal. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is not less than a third duration. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is used by the second module to adjust the sampling rate. The second synchronization signal and the first wake-up signal in the second monitoring timing are carried in the same data block. Therefore, the second synchronization signal on the first monitoring timing is used for time-frequency synchronization of the first communication device. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is used by the second module to adjust the sampling rate. This reduces the sampling rate of the first communication device by adjusting the time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0011] Based on the first aspect, in one possible implementation, the first wake-up signal timing includes a third monitoring timing and multiple fourth monitoring timings. The third monitoring timing is used to monitor a third synchronization signal. The time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings is not less than a fourth duration. The time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings is used by the second module to adjust the sampling rate. The third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block. Therefore, the first communication device can adjust the sampling rate within the time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings. This enables the first communication device to reduce its sampling rate within the time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0012] Based on the first aspect, in one possible implementation, the first synchronization signal is a synchronization signal block (SSB), a low-power synchronization signal block (LP-SS), or a tracking reference signal (TRS).

[0013] A second aspect of this application provides a communication method applicable to, for example, executed by, a second communication device. The second communication device may be a network device, a component within the network device (e.g., a processor, chip, or chip system), or a logic module or software capable of implementing all or part of the functions of the network device. The method includes: the second communication device sending a first synchronization signal to a first communication device on a first time-domain resource, the first synchronization signal being used for time-frequency synchronization between the first and second communication devices; the second communication device sending a first wake-up signal to the first communication device at a first wake-up signal timing, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal timing not less than a first duration, and the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal timing being used by the first communication device to adjust the sampling rate.

[0014] In the above technical solution, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is not less than the first duration. This time interval is used for the first communication device to adjust its sampling rate. This is beneficial for improving time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce its power consumption. For instance, the first communication device can reduce its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and then receive the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. Alternatively, the first communication device can increase its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and receive the first synchronization signal using the increased sampling rate to achieve better time-frequency synchronization.

[0015] Based on the second aspect, in one possible implementation, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is not less than a first duration, including: the first time-domain resource is after the second time-domain resource, and the time interval between the start time-domain position of the first time-domain resource's occupation and the end time-domain position of the second time-domain resource's occupation is not less than the first duration; or, the first time-domain resource is before the second time-domain resource, and the time interval between the end time-domain position of the first time-domain resource's occupation and the start time-domain position of the second time-domain resource's occupation is not less than the first duration. Two possible implementations of the positional relationship between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal are shown. This enriches the applicable scenarios of the solution. Specifically, it could be that the first communication device receives the first wake-up signal before receiving the first synchronization signal; or, the first communication device receives the first synchronization signal before receiving the first wake-up signal.

[0016] Based on the second aspect, in one possible implementation, the second communication device does not send signals during the first duration.

[0017] Based on the second aspect, in one possible implementation, the method further includes: the second communication device sending a second wake-up signal to the first communication device on a third time-domain resource occupied by the second wake-up signal timing; wherein the time interval between the third time-domain resource occupied by the second wake-up signal timing and the first time-domain resource is not less than a second duration, the first time-domain resource precedes the second time-domain resource and follows the third time-domain resource, or the first time-domain resource precedes the third time-domain resource and follows the second time-domain resource, and the time interval between the third time-domain resource occupied by the second wake-up signal timing and the first time-domain resource is used for the first communication device to adjust the sampling rate. In this implementation, the second communication device also sends a second wake-up signal before or after sending the first synchronization signal. The time interval between the third time-domain resource occupied by the second wake-up signal timing and the first time-domain resource is used for the first communication device to adjust the sampling rate. This is beneficial for the first communication device to better perform time-frequency synchronization and / or reduce the power consumption of the first communication device through the first synchronization signal.

[0018] Based on the second aspect, in one possible implementation, the second communication device sends a first synchronization signal to the first communication device on the first time domain resources, including: the second communication device sending the first synchronization signal to the first communication device on the first time domain resources through multiple transmission directions; wherein, the time interval between the starting time domain resource occupied by the first transmission direction of the multiple transmission directions and the ending time domain position of the second time domain resources is not less than a first duration, or, the time interval between the ending time domain position of the first synchronization signal occupied by the last transmission direction of the multiple transmission directions and the starting time domain position of the second time domain resources is not less than the first duration. In the scenario where the first synchronization signal corresponds to multiple transmission directions, the positional relationship between the first time domain resources and the second time domain resources occupied by the first synchronization signal is further defined. This achieves signal coverage in multiple transmission directions, facilitating time-frequency synchronization of terminal devices in multiple transmission directions.

[0019] Based on the second aspect, in one possible implementation, the first wake-up signal timing includes a first monitoring timing and a second monitoring timing. The first monitoring timing is used to monitor a second synchronization signal. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is not less than a third duration. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is used for the first communication device to adjust its sampling rate. The first wake-up signal in the second synchronization signal and the second monitoring timing is carried in the same data block. This allows the first communication device to reduce its sampling rate during the time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0020] Based on the second aspect, in one possible implementation, the first wake-up signal timing includes a third monitoring timing and multiple fourth monitoring timings. The third monitoring timing is used to monitor a third synchronization signal. The time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings is not less than a fourth duration. The time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings is used for the first communication device to adjust the sampling rate. The third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block. Therefore, the first communication device can adjust the sampling rate within the time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings. This enables the first communication device to reduce its sampling rate within the time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0021] Based on the second aspect, in one possible implementation, the first synchronization signal is SSB, LP-SS, or TRS.

[0022] A third aspect of this application provides a communication method that can be applied to, or executed by, a first communication device. The first communication device may be a terminal device, or a component in the terminal device (e.g., a processor, a chip, or a chip system), or a logic module or software that can implement all or part of the functions of the terminal device. The first communication device includes a first module for data transmission and a second module for waking up the first module. The method includes: the first communication device receiving a first synchronization signal from a second communication device via the second module on a first time-domain resource, wherein the first synchronization signal is generated based on a first sequence, the first sequence including a first sequence portion and a second sequence portion, the first sequence portion being used for time-frequency synchronization between the first and second communication devices, the first sequence portion being carried on a first portion of time-domain resources within the first time-domain resource, the second sequence portion being carried on a second portion of time-domain resources within the first time-domain resource, the first portion of time-domain resources and the second portion of time-domain resources being continuous in the time domain, and the second portion of time-domain resources being used by the second module to adjust the sampling rate; the first communication device monitoring the first wake-up signal from the second communication device via the second module on the second time-domain resource occupied by the first wake-up signal, wherein the first portion of time-domain resources is after the second portion of time-domain resources, the second portion of time-domain resources is before the second portion of time-domain resources and is continuous in the time domain with the second portion of time-domain resources; or, the first portion of time-domain resources is before the second portion of time-domain resources, the second portion of time-domain resources is after the second portion of time-domain resources and is continuous in the time domain with the second portion of time-domain resources.

[0023] In the above technical solution, the first synchronization signal is generated based on a first sequence, which includes a first sequence portion and a second sequence portion. The first sequence portion is used for time-frequency synchronization between the first and second communication devices, and is carried within a first portion of time-domain resources in the first time-domain resources. The second sequence portion is carried within a second portion of time-domain resources in the first time-domain resources. The first and second portions of time-domain resources are continuous in the time domain, and the second portion of time-domain resources is used by the second module to adjust the sampling rate. This is beneficial for improving time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Furthermore, by reducing the sampling rate of the first communication device in the second portion of time-domain resources, the first communication device can use a lower sampling rate to receive the first wake-up signal, thereby reducing the power consumption of the first communication device. Alternatively, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce its power consumption. Then, the first communication device increases its sampling rate in the second portion of time-domain resources and receives the first synchronization signal at the increased sampling rate to achieve better time-frequency synchronization.

[0024] Based on the third aspect, in one possible implementation, the end time domain position of the second time domain resource is continuous with the start time domain position of the second part of the time domain resource; or, the start time domain position of the second time domain resource is continuous with the end time domain position of the second part of the time domain resource. This illustrates two possible implementations of the positional relationship between the second time domain resource and the second part of the time domain resource, enriching the applicable scenarios of the solution.

[0025] Based on the third aspect, in one possible implementation, the symbols in the second sequence portion are copies of the first R symbols in the first sequence portion, or copies of the last R symbols in the first sequence portion, where R is an integer greater than or equal to 1. This achieves cyclic shifting, which is beneficial for the first communication device to receive and parse the first synchronization signal.

[0026] Based on the third aspect, in one possible implementation, the first wake-up signal timing includes a first monitoring timing and a second monitoring timing. The first monitoring timing is used to monitor a second synchronization signal, which is generated based on a second sequence. The second sequence includes a third sequence portion and a fourth sequence portion. The third sequence portion is used for time-frequency synchronization between the first and second communication devices. The third sequence portion carries a portion of the time-domain resources occupied by the first monitoring timing, and the fourth sequence portion carries another portion of the time-domain resources occupied by the first monitoring timing. The other portion of the time-domain resources occupied by the first monitoring timing is used by the second module to adjust the sampling rate. The portion of the time-domain resources occupied by the first monitoring timing and the other portion of the time-domain resources occupied by the first monitoring timing are continuous in the time domain. The second synchronization signal and the first wake-up signal in the second monitoring timing are carried in the same data block. This allows the first communication device to reduce its sampling rate on the other portion of the time-domain resources occupied by the first monitoring timing. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0027] Based on the third aspect, in one possible implementation, the first wake-up signal timing includes a third monitoring timing and multiple fourth monitoring timings; the third monitoring timing is used to monitor a third synchronization signal, which is generated according to a third sequence; the third sequence includes a fifth sequence portion and a sixth sequence portion; the fifth sequence portion is used for time-frequency synchronization between the communication device monitoring the multiple fourth monitoring timings and the second communication device; the fifth sequence portion is carried on a portion of the time domain resources occupied by the third monitoring timing, and the sixth sequence portion is carried on another portion of the time domain resources occupied by the third monitoring timing; the other portion of the time domain resources occupied by the third monitoring timing is used for the communication device monitoring the first wake-up signal in the multiple fourth monitoring timings to adjust the sampling rate; the portion of the time domain resources occupied by the third monitoring timing is continuous with the other portion of the time domain resources occupied by the third monitoring timing. The third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block. Therefore, the first communication device can adjust the sampling rate within the other portion of the time domain resources occupied by the third monitoring timing. This enables the first communication device to reduce its sampling rate within the other portion of the time domain resources occupied by the third monitoring timing. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0028] Based on the third aspect, in one possible implementation, the first sequence further includes a seventh sequence portion, which is carried within a third portion of the time-domain resources in the first time-domain resources. This third portion of the time-domain resources is time-domain continuous with the first portion of the time-domain resources. The method further includes: the first communication device monitoring the second wake-up signal from the second communication device via a second module on the third time-domain resources occupied during the second wake-up signal timing; if the first portion of the time-domain resources is after the second portion of the time-domain resources, and the second portion of the time-domain resources is before and time-domain continuous with the second portion of the time-domain resources, then the third portion of the time-domain resources is after and time-domain continuous with the third portion of the time-domain resources; or, if the first portion of the time-domain resources is before the second portion of the time-domain resources, and the second portion of the time-domain resources is after and time-domain continuous with the second portion of the time-domain resources, then the third portion of the time-domain resources is before and time-domain continuous with the third portion of the time-domain resources. Therefore, in this implementation, the first communication device receives the second wake-up signal before or after receiving the first synchronization signal. Thus, the third portion of the time-domain resources is used by the second module to adjust the sampling rate. This is beneficial for the first communication device to achieve better time and frequency synchronization through the first synchronization signal and / or reduce the power consumption of the first communication device.

[0029] Based on the third aspect, in one possible implementation, the starting time domain position of the third part of the time domain resource is continuous with the ending time domain position of the first part of the time domain resource; or, the ending time domain resource of the third part of the time domain resource is continuous with the starting time domain position of the first part of the time domain resource.

[0030] The fourth aspect of this application provides a communication method that can be applied to a second communication device, such as being executed by the second communication device. The second communication device may be a network device, or a component in the network device (e.g., a processor, chip, or chip system), or a logic module or software that can implement all or part of the functions of the network device. The method includes: a second communication device sending a first synchronization signal to a first communication device on a first time domain resource; wherein the first synchronization signal is generated based on a first sequence, the first sequence including a first sequence portion and a second sequence portion, the first sequence portion being used for time-frequency synchronization between the first and second communication devices, the first sequence portion being carried on a first portion of time domain resources in the first time domain resources, the second sequence portion being carried on a second portion of time domain resources in the first time domain resources, the first portion of time domain resources and the second portion of time domain resources being continuous in the time domain, and the second portion of time domain resources being used by a second module to adjust the sampling rate; the second communication device sending a first wake-up signal to the first communication device on the second time domain resources occupied at the time of the first wake-up signal, wherein the first portion of time domain resources is after the second portion of time domain resources, the second portion of time domain resources is before the second portion of time domain resources and is continuous in the time domain with the second portion of time domain resources; or, the first portion of time domain resources is before the second portion of time domain resources, the second portion of time domain resources is after the second portion of time domain resources and is continuous in the time domain with the second portion of time domain resources.

[0031] In the above technical solution, the first synchronization signal is generated based on a first sequence, which includes a first sequence portion and a second sequence portion. The first sequence portion is used for time-frequency synchronization between the first and second communication devices, and is carried within a first portion of time-domain resources in the first time-domain resources. The second sequence portion is carried within a second portion of time-domain resources in the first time-domain resources. The first and second portions of time-domain resources are continuous in the time domain, and the second portion of time-domain resources is used by the second module to adjust the sampling rate. This is beneficial for improving time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Furthermore, by reducing the sampling rate of the first communication device in the second portion of time-domain resources, the first communication device can use a lower sampling rate to receive the first wake-up signal, thereby reducing the power consumption of the first communication device. Alternatively, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce its power consumption. Then, the first communication device increases its sampling rate in the second portion of time-domain resources and receives the first synchronization signal at the increased sampling rate to achieve better time-frequency synchronization.

[0032] Based on the fourth aspect, in one possible implementation, the end time domain position of the second time domain resource is continuous with the start time domain position of the second part of the time domain resource; or, the start time domain position of the second time domain resource is continuous with the end time domain position of the second part of the time domain resource. This illustrates two possible implementations of the positional relationship between the second time domain resource and the second part of the time domain resource, enriching the applicable scenarios of the solution.

[0033] Based on the fourth aspect, in one possible implementation, the symbols in the second sequence portion are copies of the first R symbols in the first sequence portion, or copies of the last R symbols in the first sequence portion, where R is an integer greater than or equal to 1. This achieves cyclic shifting, which is beneficial for the first communication device to receive and parse the first synchronization signal.

[0034] Based on the fourth aspect, in one possible implementation, the first wake-up signal timing includes a first monitoring timing and a second monitoring timing. The first monitoring timing is used to monitor a second synchronization signal, which is generated based on a second sequence. The second sequence includes a third sequence portion and a fourth sequence portion. The third sequence portion is used for time-frequency synchronization between the first and second communication devices. The third sequence portion carries a portion of the time-domain resources occupied by the first monitoring timing, and the fourth sequence portion carries another portion of the time-domain resources occupied by the first monitoring timing. The other portion of the time-domain resources occupied by the first monitoring timing is used by the second module to adjust the sampling rate. The portion of the time-domain resources occupied by the first monitoring timing and the other portion of the time-domain resources occupied by the first monitoring timing are continuous in the time domain. The second synchronization signal and the first wake-up signal in the second monitoring timing are carried in the same data block. This allows the first communication device to reduce its sampling rate on the other portion of the time-domain resources occupied by the first monitoring timing. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0035] Based on the fourth aspect, in one possible implementation, the first wake-up signal timing includes a third monitoring timing and multiple fourth monitoring timings; the third monitoring timing is used to monitor a third synchronization signal, which is generated based on a third sequence; the third sequence includes a fifth sequence portion and a sixth sequence portion; the fifth sequence portion is used for time-frequency synchronization between the communication device monitoring the multiple fourth monitoring timings and the second communication device; the fifth sequence portion is carried on a portion of the time domain resources occupied by the third monitoring timing, and the sixth sequence portion is carried on another portion of the time domain resources occupied by the third monitoring timing; the other portion of the time domain resources occupied by the third monitoring timing is used for the communication device monitoring the first wake-up signal in the multiple fourth monitoring timings to adjust the sampling rate; the portion of the time domain resources occupied by the third monitoring timing is continuous with the other portion of the time domain resources occupied by the third monitoring timing. The third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block. Therefore, the first communication device can adjust the sampling rate within the other portion of the time domain resources occupied by the third monitoring timing. This enables the first communication device to reduce its sampling rate within the other portion of the time domain resources occupied by the third monitoring timing. Then, the first communication device receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device.

[0036] Based on the fourth aspect, in one possible implementation, the first sequence further includes a seventh sequence portion, which is carried within a third portion of the time-domain resources in the first time-domain resources. This third portion of the time-domain resources is time-domain continuous with the first portion of the time-domain resources. The method further includes: the second communication device sending a second wake-up signal to the first communication device on the third time-domain resources occupied during the second wake-up signal timing; if the first portion of the time-domain resources is after the second portion of the time-domain resources, and the second portion of the time-domain resources is before and time-domain continuous with the second portion of the time-domain resources, then the third portion of the time-domain resources is after and time-domain continuous with the third portion of the time-domain resources; or, if the first portion of the time-domain resources is before the second portion of the time-domain resources, and the second portion of the time-domain resources is after and time-domain continuous with the second portion of the time-domain resources, then the third portion of the time-domain resources is before and time-domain continuous with the third portion of the time-domain resources. Therefore, in this implementation, the first communication device receives the second wake-up signal before or after receiving the first synchronization signal. Thus, the third portion of the time-domain resources is used by the second module to adjust the sampling rate. This is beneficial for the first communication device to achieve better time and frequency synchronization through the first synchronization signal and / or reduce the power consumption of the first communication device.

[0037] Based on the fourth aspect, in one possible implementation, the starting time domain position of the third part of the time domain resource is continuous with the ending time domain position of the first part of the time domain resource; or, the ending time domain resource of the third part of the time domain resource is continuous with the starting time domain position of the first part of the time domain resource.

[0038] The fifth aspect of this application provides a communication device for performing the method provided by any one of the first to fourth aspects or any possible implementation of any one of the first to fourth aspects.

[0039] For example, the communication device may include one or more modules, such as a transceiver module, and further, a processing module.

[0040] The transceiver module is used to perform the receiving and / or sending steps in the above method, and the processing module is used to perform one or more of the determining, measuring, and obtaining steps in the above method.

[0041] A sixth aspect of this application provides a communication device including a processing circuit. The processing circuit is configured to invoke a computer program or computer instructions stored in a memory, causing the processing circuit to implement any one of the implementation methods of the first to fourth aspects.

[0042] Optionally, the communication device may also include a memory storing computer programs or computer instructions.

[0043] Optionally, the processing circuit can be one or more processors, or circuitry within one or more processors for processing or control functions.

[0044] Optionally, the processing circuitry is integrated with the memory.

[0045] Optionally, the communication device further includes a transceiver circuit, the processing circuit being used to control the transceiver circuit to perform any of the implementations of any one of the first to fourth aspects.

[0046] Optionally, the transceiver circuit can be a transceiver, an input / output circuit, or an input / output interface.

[0047] Optionally, the communication device may be a terminal device, or a chip for a terminal device, or a network device, or a chip for a network device, or a device that works with a terminal device or a network device.

[0048] The seventh aspect of this application provides a computer program product including computer instructions, characterized in that, when run on a computer, it causes the computer to perform any of the implementations of any one of the first to fourth aspects.

[0049] An eighth aspect of this application provides a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform any of the implementations of any one of the first to fourth aspects.

[0050] A ninth aspect of this application provides a chip device including a processor for calling a computer program or computer instructions in a memory to cause the processor to execute any one of the implementations of the first to fourth aspects described above.

[0051] Optionally, the processor is coupled to the memory via an interface.

[0052] A tenth aspect of this application provides a communication system comprising a first communication device performing the method as shown in the first aspect and a second communication device performing the method as shown in the second aspect; or, the communication system comprising a first communication device performing the method as shown in the third aspect and a second communication device performing the method as shown in the fourth aspect.

[0053] As can be seen from the above technical solution, the method provided in this application is applied to a first communication device, which includes a first module for data transmission and a second module for waking up the first module. The first communication device receives a first synchronization signal from a second communication device on a first time-domain resource. The first synchronization signal is used for time-frequency synchronization between the first and second communication devices. Then, the first communication device monitors the first wake-up signal from the second communication device at the timing of the first wake-up signal. The time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is not less than a first duration. The time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is used for the second module to adjust the sampling rate. The first communication device determines whether to wake up the first module based on the first wake-up signal. This is beneficial for improving time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce the power consumption of the first communication device. For example, the first communication device reduces its sampling rate during the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal, and then receives the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. Alternatively, the first communication device increases its sampling rate during the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal, and receives the first synchronization signal using the increased sampling rate to achieve better time-frequency synchronization. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of an open RAN (O-RAN or ORAN) system according to an embodiment of this application;

[0055] Figure 2 This is a schematic diagram of the structure of an access network device according to an embodiment of this application;

[0056] Figure 3 This is a schematic diagram illustrating two states of the main receiver and the wake-up receiver of the terminal device in an embodiment of this application;

[0057] Figure 4 This is a schematic diagram illustrating the timing of the network device sending a preamble and low-power wake-up signal (LP-WUS monitoring occasion, LP-WUS MO) according to an embodiment of this application.

[0058] Figure 5 This is a schematic diagram of LP-WUS MO in multiple transmission directions according to an embodiment of this application;

[0059] Figure 6 This is a schematic diagram of low power synchronization signals (LP-SS) and LP-WUS MOs in multiple transmission directions according to embodiments of this application.

[0060] Figure 7 This is a schematic diagram of the low-power wake-up signal timing (LP-WUSoccasion, LO) according to an embodiment of this application;

[0061] Figure 8 A schematic diagram illustrating the transmission of LP-SS and LP-WUS by a network device according to an embodiment of this application;

[0062] Figure 9 This is a schematic diagram of one embodiment of the communication method of this application;

[0063] Figure 10 This is a schematic diagram showing the time-domain resources occupied by LP-SS, LO1, and LO2 in an embodiment of this application.

[0064] Figure 11 This is a schematic diagram of the time-domain resources occupied by LP-SS in multiple transmission directions according to an embodiment of this application;

[0065] Figure 12 This is a schematic diagram of the preamble monitoring timing and LP-WUS MO in an embodiment of this application;

[0066] Figure 13 This is another schematic diagram of the preamble monitoring timing and LP-WUS MO in an embodiment of this application;

[0067] Figure 14 This is another schematic diagram of the preamble monitoring timing and LP-WUS MO in the embodiments of this application;

[0068] Figure 15This is another schematic diagram of the preamble monitoring timing and LP-WUS MO in the embodiments of this application;

[0069] Figure 16 This is a schematic diagram showing the time-domain resources occupied by LP-SS, LO1, and LO2 in an embodiment of this application.

[0070] Figure 17 This is another schematic diagram of the preamble monitoring timing and LP-WUS MO in the embodiments of this application;

[0071] Figure 18 This is another schematic diagram of the preamble monitoring timing and LP-WUS MO in the embodiments of this application;

[0072] Figure 19 This is a schematic diagram of the communication device according to an embodiment of this application;

[0073] Figure 20 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0074] Figure 21 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0075] Figure 22 This is a schematic diagram of the structure of a terminal device according to an embodiment of this application. Detailed Implementation

[0076] This application provides a communication method and related apparatus for improving time-frequency synchronization performance and / or reducing the power consumption of a first communication device. For example, the first communication device can use a higher sampling rate to receive a first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive a first wake-up signal to reduce its power consumption. For instance, the first communication device can reduce its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and then receive the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. As another example, the first communication device can increase its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and receive the first synchronization signal using the increased sampling rate to achieve better time-frequency synchronization.

[0077] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0078] References to "one embodiment" or "some embodiments" as described in this application mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0079] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, and c can be single or multiple.

[0080] It is understood that in this application, "instruction" can include direct instruction, indirect instruction, explicit instruction, and implicit instruction. When describing a certain instruction information to indicate A, it can be understood that the instruction information carries A, directly indicates A, or indirectly indicates A.

[0081] The technical solution of this application can be applied to various communication systems. For example, 5th generation (5G) systems, new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, future mobile communication systems, vehicle-to-everything (V2X) communication systems, Internet of Things (IoT) communication systems, industrial internet communication systems, or satellite communication systems, etc.

[0082] The communication systems to which this application applies include terminal equipment and network equipment. The terminal equipment and network equipment are described below.

[0083] Terminal equipment, also known as UE, mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premise equipment (CPE), etc., refers to devices that include wireless communication capabilities (providing voice / data connectivity to users). Examples include handheld devices with wireless connectivity, in-vehicle devices, and machine-type communication (MTC) terminals. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving (e.g., drones, vehicles), wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in self-driving can be drones, helicopters, or airplanes. For example, wireless terminals in vehicle-to-everything (V2X) can be in-vehicle equipment, vehicle-mounted equipment, in-vehicle modules, vehicles, or ships. Wireless terminals in industrial control can be cameras, robots, or robotic arms. Wireless terminals in smart homes can be televisions, air conditioners, robot vacuums, speakers, or set-top boxes. The terminal device can also be a device or module that is connected to the communication system shown above and has corresponding communication functions. The terminal device usually contains a communication module, circuit or chip that performs the corresponding communication function, and the terminal device is also configured with program instructions for performing the corresponding communication function.

[0084] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus with integrated circuitry, or a chip, chip system, module, or control unit in the device or apparatus shown above; the specific application is not limited to any particular type. It should also be noted that in this application, when referring to a terminal device, it can refer to the terminal device itself, or to the chip, functional module, or integrated circuit within the terminal device that performs the method provided in this application; the specific application is not limited to any particular type.

[0085] A network device is a device deployed in a radio access network to provide wireless communication functions for terminal devices. Network devices may also be referred to as radio access network (RAN) entities, access nodes, network nodes, access network equipment, or communication devices, etc.

[0086] Specifically, the network equipment can be access network equipment for cellular systems related to the 3rd Generation Partnership Project (3GPP). For example, fourth-generation (4G) mobile communication systems, 5G mobile communication systems, or future mobile communication systems. The network equipment can also be access network equipment in open RAN (O-RAN or ORAN) or cloud radio access network (CRAN). Alternatively, the network equipment can also be access network equipment in a communication system resulting from the integration of two or more of the above communication systems.

[0087] Network equipment includes, but is not limited to: evolved Node B (eNB), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP) in a wireless fidelity (Wi-Fi) system, macro base station, micro base station, wireless relay node, donor node, radio controller in a CRAN scenario, wireless backhaul node, transmission point (TP), or transmission reception point (TRP). Network equipment can also be access network equipment in a 5G mobile communication system. For example, next-generation Node B (gNB) in a new radio (NR) system, transmission reception point (TRP), TP, or one or more antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system. Alternatively, network equipment can also be network nodes constituting a gNB or transmission point. Examples include centralized units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), and radio units (RUs). CUs and DUs can be separate entities or included within the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). Alternatively, network equipment can be servers, wearable devices, vehicles, or in-vehicle equipment. For example, in V2X technology, network equipment can be roadside units (RSUs).

[0088] It should be noted that CU (or CU-CP and CU-UP), DU, or RU may have different names in different systems, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open centralized unit (O-CU) or an open CU, DU can also be called an open distributed unit (O-DU), centralized unit control plane (CU-CP) can also be called an open centralized unit control plane (O-CU-CP) or an open CU-CP, centralized unit user plane (CU-UP) can also be called an open centralized unit user plane (O-CU-UP) or an open CU-UP, and RU can also be called an open radio unit (O-RU). This application does not impose any specific limitations. Any of the units CU, CU-CP, CU-UP, DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0089] Figure 1 This is a schematic diagram of an ORAN system according to an embodiment of this application. The ORAN system includes a core network, access network equipment, and UEs. Optionally, the ORAN system may further include... Figure 1 Other components besides those shown are not specifically limited in this application.

[0090] Access network devices can communicate with the core network (CN) via a backhaul link. Access network devices can also communicate with the UE via an air interface. Specifically, the BBU in the access network device communicates with the core network via a backhaul link. The RU in the access network device communicates with at least one UE via an air interface. The BBU communicates with at least one RU via a fronthaul link; the BBU and RU may or may not be co-located.

[0091] A BBU consists of at least one CU and at least one DU, and the CU and DU can communicate with each other via at least one midhaul link.

[0092] One possible implementation is, such as Figure 2As shown, the CU is a logical node that carries the radio resource control (RRC), service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of access network equipment. The CU can connect to network nodes such as the core network through interfaces, such as the E2 interface. Optionally, the CU can have some core network functions. The CU (e.g., the PDCP layer and / or higher) connects to the DU (e.g., the radio link control (RLC) layer and lower layers of the DU) through interfaces, such as the F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0093] Optional, such as Figure 2As shown, the CU can be divided into CU-CP and CU-UP. CU-CP is a logical node carrying the RRC layer and the Packet Data Convergence Protocol layer (PDCP-C), responsible for implementing the CU's control plane functions. CU-CP can interact with network elements in the core network that implement control plane functions. These network elements can be access and mobility function (AMF) network elements, such as the AMF network element in a 5G system. The AMF network element is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. CU-UP is a logical node carrying the SDAP layer and the Packet Data Convergence Protocol layer (PDCP-U), responsible for implementing the CU's user plane functions. CU-UP can interact with network elements in the core network that implement user plane functions. In the core network, network elements used to implement user plane functions, such as the user plane function (UPF) network element in a 5G system, are responsible for forwarding and receiving data in terminal devices. The above configuration of CU and DU is merely an example; in practical applications, the functions of CU and DU can be configured as needed. For example, CU or DU can be configured to have more protocol layer functions, or to have only some protocol layer processing functions. For instance, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of CU or DU can be divided according to service type or other system requirements, such as by latency, placing functions that need to meet low latency requirements in the DU and functions that do not need to meet such latency requirements in the CU.

[0094] One possible implementation is, such as Figure 2 As shown, a DU is a logical node that carries the RLC layer, medium access control (MAC) layer, higher physical layer (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0095] One possible implementation is, such as Figure 2 As shown, the RU is a logical node that carries both lower physical layer (PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP Transmit Receive Point (TRP), a Remote Radio Header (RRH), or other similar entities. In some examples, the Low-PHY includes PHY processing functions such as Fast Fourier Transform (FFT), Inverse Fast Fourier Transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0096] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a fronthaul link through the Lower-Layer Split CUS-Plane (LLS-CUS) interface. LLS-CUS may include a Lower-Layer Split control (LLS-C) interface and a Lower-Layer Splituser (LLS-U) interface, providing the control plane (C-Plane) and user plane (U-Plane) respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via a Lower-Layer Split management (LLS-M) interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0097] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0098] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples.

[0099] It should be noted that network devices can be devices or apparatuses with chips, or devices or apparatuses with integrated circuits, or chips, chip systems, modules, or control units in the devices or apparatuses shown above; this application does not impose any specific limitations. It should also be noted that in this application, the term "network device" can refer to the network device itself, or to chips, functional modules, or integrated circuits within the network device that implement the methods provided in this application; this application does not impose any specific limitations.

[0100] To reduce the power consumption of terminal devices, LP-WUS or low power wakeup radio was introduced in R18 and R19 of NR. The purpose of this research is to study ways to reduce the power consumption of terminal devices in various RRC states.

[0101] The concept of wake-up radio refers to a terminal device activating only a low-power wake-up receiver (LP-WUR) to monitor wake-up data packets when the main module (used for data transmission) is in sleep mode. The wake-up data packets are typically carried on the LP-WUR. The main module can also be called a main receiver (or main radio, MR), or communication main module, etc., and this application does not specify a particular term. The main module is a traditional receiver in the terminal device, used to receive downlink signaling, downlink signals, and downlink data. The wake-up receiver can also be called a wake-up circuit, communication auxiliary module, or auxiliary circuit, etc.

[0102] The main module includes both an intermediate frequency (IF) module and a baseband processing module. The wake-up receiver may consist of a simple receiver composed of an IF module; alternatively, the wake-up receiver may employ a lower-power module (e.g., LP-WUS has a much lower bandwidth and transmission rate than other signals in NR, allowing for the use of a low-power module), resulting in a significantly lower power consumption for the wake-up receiver compared to the main receiver. For example, the wake-up receiver's power consumption can be less than one-tenth of the main receiver's average power consumption in idle mode.

[0103] For example, a wake-up receiver may include lower-power radio frequency circuitry and baseband circuitry. For instance, the wake-up receiver may not include a mixer, or may use a low-power mixer. For example, this low-power mixer may employ a low-power ring oscillator instead of a phase-locked loop (PLL), or a low-noise amplifier (LNA) with a higher noise figure.

[0104] For example, a wake-up receiver can be a submodule of the main receiver, or it can share some circuits and components with the main receiver. Alternatively, compared to the main receiver, the wake-up receiver includes fewer components. For instance, a wake-up receiver does not include a Fast Fourier Transform module, a channel decoding module, a Low-Density Parity Check (LDPC) decoding module, or a polarization decoding module. Furthermore, compared to the main receiver, the wake-up receiver has fewer registers and memory units, uses a lower bandwidth bus, and therefore consumes less power than the main receiver.

[0105] For example, the main receiver can also be considered as waking up the receiver when it is in low-power operating mode. For instance, when the main receiver reduces its operating voltage, disables some high-power functions, slows down the clock frequency, and / or reduces the sampling rate and bit width of analog-to-digital sampling, the main receiver can be understood as waking up the receiver.

[0106] Figure 3 This diagram illustrates two states of the terminal device in an embodiment of this application: the main receiver and the wake-up receiver. Figure 3 As shown:

[0107] State 1: After the master receiver completes data transmission and reception, it returns to the idle state. The master receiver can enter deep sleep or ultra-deep sleep to reduce the power consumption of the terminal device. The woken-up receiver is in the powered-on state and receives LP-WUS.

[0108] State 2: Once the wake-up receiver receives the LP-WUS sent to the terminal device or the LP-WUS of the group to which the terminal device belongs, the wake-up receiver will trigger the master receiver to wake up or power on, and the master receiver will continue to send and receive data or signaling.

[0109] In an LP-WUS system, the LP-SS can be either a periodic or aperiodic signal. The LP-SS is used for time-frequency synchronization between terminal devices and network devices. Specifically, after synchronizing time and frequency with the network device via the LP-SS, the terminal device learns the frame, subframe, time slot, and symbol of the LP-WUS. The terminal device can then determine whether its local clock has shifted and whether its operating frequency has deviated from the LP-WUS transmission frequency. Additionally, the LP-SS includes the cell identifier, facilitating the terminal device's identification of the cell it has accessed.

[0110] LP-WUS is used to indicate whether a specific terminal device or a group of terminal devices has been woken up. A woken-up terminal device triggers its master receiver to perform corresponding operations, such as updating system messages, receiving paging messages, initiating random access, or receiving disaster warning information. In some candidate designs, due to the long transmission period of LP-SS (e.g., 320 milliseconds), the time interval between the terminal device receiving LP-SS and receiving LP-WUS is large. This can cause a shift in the terminal device's local clock and frequency during LP-WUS reception, leading to a degraded LP-WUS reception performance. Therefore, as... Figure 4 As shown, before sending LP-WUS, the network device can also send a preamble. This preamble is used by the terminal device to synchronize time and frequency with the network device before receiving LP-WUS, thereby improving the reception performance of LP-WUS.

[0111] The following describes the workflow of LP-WUS waking up terminal devices.

[0112] Step 1: When the terminal device receives LP-WUS by waking up the receiver, the main receiver is generally in a low-power state. For example, deep sleep or ultra-deep sleep.

[0113] Step 2: When the wake-up receiver receives LP-WUS, the terminal device first needs to process the LP-WUS. For example, it needs to demodulate the LP-WUS. If the LP-WUS signal is encoded, it also needs to decode and verify the LP-WUS to identify the wake-up information.

[0114] Step 3: If the wake-up information includes information to wake up the terminal device or the group to which the terminal device belongs, the terminal device sends a wake-up instruction to the master receiver through the wake-up receiver to wake up the master receiver.

[0115] Step 4: The master receiver will switch from the low-power state to the active state, which mainly includes the following process:

[0116] 1. Power on and start the main receiver's chip, antenna, storage, and other peripheral devices;

[0117] 2. The main receiver's chip, antenna, storage, and other peripheral devices load pre-stored configuration parameters from the read-only memory (ROM) chip;

[0118] 3. The main receiver searches for the network and determines the serving cell where the terminal device is located;

[0119] 4. The primary receiver performs further fine-grained time-frequency synchronization to determine the time boundaries of the serving cell.

[0120] 5. When the paging time arrives, the main receiver receives the paging message and performs corresponding operations based on the paging message.

[0121] The following describes the timing of LP-WUS transmission.

[0122] The timing of LP-WUS transmission can be called the LP-WUS MO. An LP-WUS MO can be understood as a predefined or network-configured segment of time-frequency resources. Network devices can transmit LP-WUS on an LP-WUS MO, or they can choose not to. Different terminal devices or groups of terminal devices may correspond to different LP-WUS MOs, which can be distinguished by the transmission period of the LP-WUS MO and the transmission time within that period. Network devices can transmit LP-WUS using different transmission directions; therefore, the same LP-WUS can be transmitted on the time-frequency resources corresponding to multiple LP-WUS MOs. The LP-WUS content transmitted on each LP-WUS MO is the same, but the corresponding beam direction is different. Figure 5 As shown, the terminal device corresponds to four LP-WUS MOs. The network device transmits LP-WUS on the four LP-WUS MOs via beam 1, beam 2, beam 3, and beam 4, respectively. The LP-WUS transmitted in different beam directions can contain the same content. The multiple LP-WUS MOs used to transmit the same LP-WUS content in different beam directions can be called an LP-WUSMO group. This enables LP-WUS to cover the entire cell.

[0123] LP-SS can also correspond to multiple transmission directions. For example... Figure 6As shown, LP-SS corresponds to four transmission directions. The number of beams transmitted by LP-SS is the same as the number of beams transmitted by LP-WUS, and the beam directions of LP-SS are the same as those of LP-WUS. The beam direction of the first LP-SS is the same as the beam direction of LP-WUS transmitted on the first LP-WUSMO, i.e., both are beam 1. The beam direction of the second LP-SS is the same as the beam direction of LP-WUS transmitted on the second LP-WUSMO, i.e., both are beam 2. The beam direction of the third LP-SS is the same as the beam direction of LP-WUS transmitted on the third LP-WUSMO, i.e., both are beam 3. The beam direction of the fourth LP-SS is the same as the beam direction of LP-WUS transmitted on the fourth LP-WUSMO, i.e., both are beam 4. It should be noted that the beam direction of LP-SS transmission is the same as that of LP-WUS transmission. This means that the receiver of the terminal device can use the same spatial RX parameter to receive both LP-SS and LP-WUS. Therefore, the terminal device can first detect different transmission beams to determine the transmission beam with the best received signal quality, and then receive the LP-WUS under that transmission beam to obtain the best LP-WUS reception performance.

[0124] Each LP-WUS MO can carry wake-up information to indicate whether a terminal device or a group of terminal devices has been woken up. Alternatively, the wake-up information can indicate whether multiple terminal devices or groups of terminal devices have been woken up. Multiple LP-WUS MOs can be combined into a low-power wake-up signal timing (LP-WUSoccasion, LO), and a LO can contain one or more LP-WUS MOs. Figure 7 As shown, the LO includes four LP-WUS MOs, each of which can send different wake-up signals to wake up different groups of terminal devices. For a terminal device in a group of terminal devices, its wake-up signal can be sent in any one of these four LP-WUS MOs.

[0125] The communication system to which the method provided in this application is applicable includes a first communication device and a second communication device. Optionally, the first communication device is a terminal device, or a chip, chip system, or processor in the terminal device; or a logic module or software implementing part or all of the first terminal device. The second communication device is a network device, or a chip, chip system, or processor in the network device; or a logic module or software implementing part or all of the network device. Of course, the communication system may also include more communication devices, and the technical solution of this application can be executed between these more communication devices and the second communication device.

[0126] Optionally, the first communication device includes a first module for data transmission and a second module for waking up the first module. The first module can be understood as the main receiver described above. The second module can be understood as the wake-up receiver described above. Specifically, this application does not limit the names of the first module and the second module.

[0127] Currently, LP-SS and LP-WUS generally use the same bandwidth for transmission on the same frequency; therefore, network devices use time-division multiplexing to transmit LP-SS and LP-WUS. For example... Figure 8 As shown, after the network device sends LP-SS, it then sends LP-WUS. When the terminal device receives LP-SS, the actual transmission time of LP-SS is uncertain. Therefore, the terminal device needs to continuously slide-detect LP-SS within a time window, and then determine the actual transmission time of LP-SS based on the sliding detection results. The terminal device then performs time-frequency synchronization with the network device based on LP-SS to obtain the synchronization result. The terminal device adjusts its local clock and operating frequency based on the synchronization result. Therefore, it can be seen that the process of sliding-detecting LP-SS and performing time-frequency synchronization via LP-SS requires a certain processing time.

[0128] To improve time-frequency synchronization performance, terminal devices typically use a higher sampling rate to receive LP-SS, thereby increasing time resolution. For example, if the LP-SS transmission bandwidth is 3.6MHz, the terminal device can set the sampling rate of the receiver's analog-to-digital converter (ADC) to 7.68MHz. However, after receiving LP-SS, when receiving LP-WUS, the terminal device prefers to use a lower sampling rate to reduce power consumption. For instance, setting the ADC sampling rate to 96kHz (kilohertz) significantly reduces power consumption compared to the sampling rate used for LP-SS reception, resulting in an eight-fold decrease in power consumption. However, adjusting the sampling rate of devices like the ADC requires processing time. Therefore, if... Figure 8 The transmission method shown cannot meet the needs of terminal devices to improve time-frequency synchronization performance and / or reduce power consumption. Therefore, how network devices should transmit LP-SS and LP-WUS to improve time-frequency synchronization performance and / or reduce power consumption of terminal devices is a question worth considering.

[0129] This application provides corresponding technical solutions for improving time-frequency synchronization performance and / or reducing the power consumption of a first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce its power consumption. For instance, the first communication device can reduce its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and then receive the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. As another example, the first communication device can increase its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal, and receive the first synchronization signal using the increased sampling rate to achieve better time-frequency synchronization. Please refer to the relevant descriptions in the embodiments below for details.

[0130] The technical solution of this application is described below with reference to specific embodiments.

[0131] Figure 9 This is a schematic diagram of one embodiment of the communication method described in this application. Please refer to... Figure 9 The method is applied to a first communication device and a second communication device. The first communication device includes a first module for data transmission and a second module for waking up the first module. Figure 9 The methods shown include:

[0132] 901. The second communication device sends a first synchronization signal to the first communication device on the first time domain resource. Correspondingly, the first communication device receives the first synchronization signal from the second communication device on the first time domain resource through the second module.

[0133] The first synchronization signal is used for time and frequency synchronization between the first communication device and the second communication device.

[0134] Optionally, the first synchronization signal is an SSB, LP-SS, or TRS, or other reference signals that can be used for time-frequency tracking, radio resource management measurement (RRM Measurement), radio link management measurement (RLM Measurement), and / or channel estimation.

[0135] For example, such as Figure 10As shown, LP-SS occupies N time-domain symbols, meaning the first time-domain resource includes N time-domain symbols, where N is an integer greater than or equal to 1. Optionally, the first synchronization signal is modulated using on-off keying (OOK) modulation, and the length of the sequence used to generate the first synchronization signal is S OOK symbols, where S is an integer greater than or equal to 1.

[0136] 902. The second communication device sends a first wake-up signal at the first wake-up signal timing. Correspondingly, the first communication device monitors the first wake-up signal sent by the second communication device through the second module at the first wake-up signal timing.

[0137] The time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is not less than the first duration. This time interval is used by the second module to adjust the sampling rate. Optionally, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is also used for the first communication device to perform time-frequency synchronization with the second communication device based on a reference signal.

[0138] In one possible implementation, the first time-domain resource follows the second time-domain resource, and the time interval between the start time-domain position of the first time-domain resource and the end time-domain position of the second time-domain resource is not less than a first duration. For example, as... Figure 10 As shown, LP-SS occupies N time-domain symbols, meaning the first time-domain resource includes N time-domain symbols. The first wake-up signal timing is LO2, and LO2 occupies P time-domain symbols, where P is an integer greater than or equal to 1. That is, the second time-domain resource includes P time-domain symbols. The first duration includes Y time-domain symbols, where Y is an integer greater than or equal to 1. The time interval between the starting time-domain position occupied by LP-SS and the ending time-domain position occupied by LO2 is not less than Y time-domain symbols.

[0139] In another possible implementation, the first time-domain resource precedes the second time-domain resource, and the time interval between the end time-domain position of the first time-domain resource and the start time-domain position of the second time-domain resource is not less than a first duration. For example, as... Figure 10 As shown, LP-SS occupies N time-domain symbols, meaning the first time-domain resource includes N time-domain symbols. The first wake-up signal timing is LO1, and LO1 occupies M time-domain symbols, where M is an integer greater than or equal to 1. That is, the second time-domain resource includes M time-domain symbols. The first duration includes X time-domain symbols, where X is an integer greater than or equal to 1. The time interval between the end time-domain position occupied by LP-SS and the start time-domain resource occupied by LO1 is equal to X time-domain symbols.

[0140] It should be noted that the above example uses time-domain symbols as the unit to illustrate the length of the first duration. In practical applications, the unit of the first duration can also be other units, such as time slots, sub-time slots, milliseconds, or seconds, etc., which are not limited in this application.

[0141] Optionally, the length of the first duration can be determined based on the processing time required by the second module to adjust the sampling rate of the analog-to-digital converter. The analog-to-digital converter is used to convert the received signal from the analog domain to the digital domain. In one example, the second module can achieve different sampling rates by adjusting the programmable divider of the analog-to-digital converter clock. Optionally, the length of the first duration can also be determined based on the processing time required by the first communication device to perform time-frequency synchronization. For example, if the first time domain resource precedes the second time domain resource, the first communication device receives the first synchronization signal first, and then receives the first wake-up signal. That is, the first communication device can perform time-frequency synchronization based on the first synchronization signal within the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal. Therefore, the length of the first duration is related to the processing time required by the first communication device to perform time-frequency synchronization.

[0142] It should be noted that the sampling rate can be understood as the signal sampling rate used in the second module for receiving signals. Specifically, the second module can adjust the sampling rate of the analog-to-digital converter (ADC). Optionally, the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal is used by the second module to decrease or increase the sampling rate. For example, if the first time-domain resource is after the second time-domain resource, i.e., the second module receives the first wake-up signal first and then the first synchronization signal, the second module can use a lower sampling rate to receive the first wake-up signal, thereby reducing the power consumption of the first communication device. The second module can increase the sampling rate during the time interval between the second and first time-domain resources and receive the first synchronization signal at the increased sampling rate. In one example, the second module can reduce the frequency divider factor and use a higher frequency clock signal as the clock for the ADC, thereby increasing the sampling rate of the ADC and improving the accuracy of time-frequency synchronization. As another example, if the first time-domain resource is before the second time-domain resource, i.e., the second module receives the first synchronization signal first and then the first synchronization signal, the second module can use a higher sampling rate to receive the first synchronization signal, thereby improving the accuracy of time-frequency synchronization. The second module can reduce the sampling rate during the time interval between the second time domain resource and the first time domain resource, and receive the first wake-up signal at the reduced sampling rate. In one example, the second module can increase the frequency divider factor and use a higher frequency clock signal as the clock for the analog-to-digital converter, thereby reducing the sampling rate of the analog-to-digital converter. Since the reduced sampling rate significantly reduces the amount of signal processing operations in the digital domain for the first communication device, and also reduces the power consumption of the analog-to-digital converter itself, the power consumption of the first communication device is reduced.

[0143] Optionally, the second communication device does not transmit a signal during the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing. For example, the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing includes X time domain symbols, which are gap symbols.

[0144] Optionally, the reference signal corresponds to multiple transmission directions, and the time interval between the starting time domain position occupied by the first synchronization signal transmitted in the first transmission direction and the ending time domain position of the second time domain resource is not less than a first duration; or, the time interval between the ending time domain position occupied by the first synchronization signal transmitted in the last transmission direction and the starting time domain position of the second time domain resource is not less than a first duration. Optionally, the transmission direction is represented by a beam. In other words, the second communication device transmits the first synchronization signal to the first communication device on the first time domain resource through multiple transmission directions. For example, as... Figure 11 As shown, the first synchronization signal corresponds to four transmission directions: beam 1, beam 2, beam 3, and beam 4. The first wake-up signal timing is LO1. Therefore, the time interval between the end time domain position of the first synchronization signal (i.e., J time domain symbols) occupied by the second communication device on beam 4 and the start time domain position of the time domain resources (i.e., M time domain symbols) occupied by LO1 is not less than X time domain symbols. For example, the first synchronization signal corresponds to four transmission directions: beam 1, beam 2, beam 3, and beam 4. The first wake-up signal timing is LO2. Therefore, the time interval between the start time domain position of the first synchronization signal (i.e., H time domain symbols) occupied by the second communication device on beam 1 and the end time domain position of the time domain resources (i.e., P time domain symbols) occupied by LO2 is not less than Y time domain symbols.

[0145] In one possible implementation, the first wake-up signal timing includes a first monitoring timing and a second monitoring timing. The first monitoring timing is used to monitor the second synchronization signal. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is not less than a third duration. The time interval between the time domain resources occupied by the first monitoring timing and the time domain resources occupied by the second monitoring timing is used by the second module to adjust the sampling rate. The first wake-up signal in the second synchronization signal and the first wake-up signal in the second monitoring timing are carried in the same data block. Carrying the first wake-up signal in the second synchronization signal and the first monitoring timing in the same data block means that the time-frequency resources occupied by the second synchronization signal and the time-frequency resources occupied by the first wake-up signal are continuous, and the time-frequency resources occupied by the second synchronization signal and the first wake-up signal are pre-agreed upon by the network device and the terminal device, or configured by the network device for the terminal device. For information on the sampling rate, please refer to the relevant introduction above.

[0146] Optionally, the second synchronization signal is a preamble.

[0147] In this implementation, the time-domain resources occupied by the first synchronization signal and the time-domain resources occupied by the second monitoring opportunity are far apart, therefore the first communication device needs to perform time-frequency synchronization again. The first communication device can receive the second synchronization signal from the second communication device during the first monitoring opportunity. To improve time-frequency synchronization performance, the first communication device can use a higher sampling rate to receive the second synchronization signal from the second communication device during the first monitoring opportunity. To reduce the power consumption of the first communication device, it can adjust the sampling rate within the time interval between the time-domain resources occupied by the first and second monitoring opportunities. For example, the first communication device can reduce the sampling rate. Then, the first communication device uses the reduced sampling rate to monitor the first wake-up signal during the second monitoring opportunity. For example, as... Figure 11 As shown, the timing of the first wake-up signal is as follows: Figure 11 As shown in LO1. Figure 12 As shown, the first monitoring opportunity is as follows Figure 12 The preamble monitoring timing is shown below, and the second monitoring timing is as follows: Figure 12 The LP-WUS MO shown. The time interval between the time domain resources occupied by the preamble monitoring timing and the time domain resources occupied by the low-power wake-up signal monitoring timing is not less than D time domain symbols. D is an integer greater than or equal to 1. The second module monitors the preamble during the preamble monitoring timing. After monitoring the preamble, the second module can use the preamble to synchronize time and frequency with the second communication device. Then, the second module monitors the first wake-up signal during the low-power wake-up signal monitoring timing.

[0148] It should be noted that the above example describes the length of the third duration in terms of time-domain symbols. In practical applications, the unit of the third duration can also be other units, such as time slots, sub-time slots, milliseconds, seconds, etc., and this application does not impose any restrictions on them.

[0149] Optionally, the third duration can be determined based on the processing time required to adjust the sampling rate in the second module.

[0150] It should be noted that, optionally, the timing of the first wake-up signal may include more first monitoring timings and second monitoring timings, which are not limited in this application.

[0151] The above describes a scheme where the time interval between the first and second monitoring opportunities is not less than the first duration. In practical applications, there can be additional monitoring opportunities between the first and second monitoring opportunities. For example, the time interval between the first and second monitoring opportunities can be an integer multiple of the sum of the preamble monitoring opportunities and the length of the LP-WUS MO. This avoids resource waste. For example, such as... Figure 13 As shown, the first monitoring timing is preamble monitoring timing 1, and the second monitoring timing is LP-WUS MO2. Preamble monitoring timing 1 and LP-WUS MO2 are separated by LP-WUS MO1 and preamble monitoring timing 2. Preamble monitoring timing 2 is used to monitor the preamble, which is used to monitor the time-frequency synchronization of the LP-WUS MO3 communication device.

[0152] In another possible implementation, the first wake-up signal timing includes a third monitoring timing and multiple fourth monitoring timings. The third monitoring timing is used to monitor a third synchronization signal, and the time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings is not less than a fourth duration. The time interval between the time domain resources occupied by the third monitoring timing and the time domain resources occupied by the multiple fourth monitoring timings is used by the second module to adjust the sampling rate. The third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block. In other words, the third synchronization signal is used to monitor the communication device of the multiple fourth monitoring timings to perform time-frequency synchronization with the second communication device. The fact that the third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block means that the time-frequency resources occupied by the third synchronization signal and the time-frequency resources occupied by the first wake-up signal are continuous. The time-frequency resources occupied by the third synchronization signal and the time-frequency resources occupied by the first wake-up signal are pre-agreed upon by the network device and the terminal device, or configured by the network device for the terminal device; this application does not specify the specifics.

[0153] Optionally, the third synchronization signal is a preamble.

[0154] In one possible implementation, for the first communication device, if the first communication device detects the first wake-up signal during one of a plurality of fourth monitoring times, then the first communication device does not need to continue monitoring the first wake-up signal during subsequent fourth monitoring times. In another possible implementation, the first communication device monitors the first wake-up signal during a plurality of fourth monitoring times to obtain wake-up information for the first communication device.

[0155] In this implementation, the time-domain resources occupied by the first synchronization signal are far apart from the time-domain resources occupied by the multiple fourth monitoring opportunities, therefore the first communication device needs to perform time-frequency synchronization again. The first communication device can receive the third synchronization signal from the second communication device during the third monitoring opportunity. The first communication device can use a higher sampling rate to receive the third synchronization signal from the second communication device during the third monitoring opportunity, thereby improving time-frequency synchronization performance. To reduce the power consumption of the first communication device, it can adjust the sampling rate within the time interval between the time-domain resources occupied by the third monitoring opportunity and the time-domain resources occupied by the multiple fourth monitoring opportunities. For example, the first communication device reduces the sampling rate. Then, the first communication device samples at the reduced sampling rate to monitor the first wake-up signal during the multiple fourth monitoring opportunities. For example, as... Figure 11 As shown, the timing of the first wake-up signal is as follows: Figure 11 As shown in LO1. Figure 14 As shown, the third monitoring opportunity is as follows: Figure 14 The preamble monitoring timing shown includes multiple fourth monitoring timings, such as... Figure 14 The LP-WUS MO1, LP-WUS MO2, LP-WUS MO3, and LP-WUS MO4 are shown. The time interval between the time domain resources occupied by the preamble monitoring opportunity and the time domain resources occupied by multiple fourth monitoring opportunities is not less than D time domain symbols. D is an integer greater than or equal to 1. The second module monitors the preamble during the preamble monitoring opportunity. After detecting the preamble, the second module can use the preamble to perform time-frequency synchronization with the second communication device. The second module reduces the sampling rate during the time interval between the time domain resources occupied by the preamble monitoring opportunity and the time domain resources occupied by multiple fourth monitoring opportunities. Then, the second module monitors the first wake-up signal on the multiple fourth monitoring opportunities.

[0156] It should be noted that the above example describes the length of the fourth duration using time-domain symbols. In practical applications, the unit of the fourth duration can also be other units, such as time slots, sub-time slots, milliseconds, seconds, etc., and this application does not impose any restrictions on them.

[0157] Optionally, the fourth duration can be determined based on the processing time required to adjust the sampling rate in the second module.

[0158] Optionally, the third synchronization signal corresponds to multiple transmission directions, and the first wake-up signal at each of the multiple fourth monitoring opportunities corresponds to multiple transmission directions. Optionally, the third synchronization signal is a preamble. For example, the third synchronization signal corresponds to two transmission directions, namely beam 1 and beam 2. The first wake-up signal at each fourth monitoring opportunity corresponds to two transmission directions, namely beam 1 and beam 2. Figure 15 As shown, the second communication device sends preamble 1 when beam 1 is monitored by the preamble, and sends preamble 2 when beam 2 is monitored by the preamble. LP-WUS MO1 and LP-WUS MO3 both correspond to beam 1, and LP-WUS MO2 and LP-WUS MO4 both correspond to beam 2. Preamble 1 can be used to monitor the time-frequency synchronization between the communication devices of LP-WUS MO1 and LP-WUS MO3 and the second communication device. Preamble 2 can be used to monitor the time-frequency synchronization between the communication devices of LP-WUS MO2 and LP-WUS MO4 and the second communication device. LP-WUS MO1 and LP-WUS MO2 can be understood as one LP-WUSMO group, and LP-WUS MO3 and LP-WUS MO4 can be understood as another LP-WUSMO group.

[0159] 903. The first communication device determines whether to wake up the first module based on the first wake-up signal.

[0160] Specifically, the first communication device determines whether the first wake-up signal contains wake-up information of the first communication device. If so, the first communication device wakes up the first module. For details of the wake-up process, please refer to the relevant introduction above. If not, the first communication device does not perform the operation of waking up the first module.

[0161] Optional, Figure 9 The illustrated embodiment also includes steps 904 to 905.

[0162] 904. The second communication device sends a second wake-up signal to the first communication device at the second wake-up signal timing. Correspondingly, the first communication device receives the second wake-up signal from the second communication device at the second wake-up signal timing.

[0163] Specifically, the time interval between the third time-domain resource occupied by the second wake-up signal and the first time-domain resource is not less than the second duration. The time interval between the third time-domain resource occupied by the second wake-up signal and the first time-domain resource is used by the second module to adjust the sampling rate.

[0164] In one possible implementation, the first time-domain resource precedes the second time-domain resource and follows the third time-domain resource. The time interval between the end time-domain position of the first time-domain resource and the start time-domain position of the second time-domain resource is not less than a first duration. The time interval between the start time-domain position of the first time-domain resource and the end time-domain position of the third time-domain resource is not less than a second duration. For example, as... Figure 10 As shown, LP-SS occupies N time-domain symbols, meaning the first time-domain resource includes N time-domain symbols. The first wake-up signal timing is LO1, and LO1 occupies M time-domain symbols, where M is an integer greater than or equal to 1. This means the second time-domain resource includes M time-domain symbols. The first duration includes X time-domain symbols, where X is an integer greater than or equal to 1. The time interval between the end time-domain position occupied by LP-SS and the start time-domain resource occupied by LO1 is not less than X time-domain symbols. The second wake-up signal timing is LO2, and LO2 occupies P time-domain symbols, where P is an integer greater than or equal to 1. This means the third time-domain resource includes P time-domain symbols. The second duration includes Y time-domain symbols, where Y is an integer greater than or equal to 1. The time interval between the start time-domain position occupied by LP-SS and the end time-domain position occupied by LO2 is not less than Y time-domain symbols. Optionally, P = M.

[0165] In another possible implementation, the first time-domain resource precedes the third time-domain resource and follows the second time-domain resource. The time interval between the start time-domain position of the first time-domain resource and the end time-domain position of the second time-domain resource is not less than a first duration. The time interval between the end time-domain position of the first time-domain resource and the start time-domain position of the third time-domain resource is not less than a second duration. For example, as... Figure 10 As shown, LP-SS occupies N time-domain symbols, meaning the first time-domain resource includes N time-domain symbols. The first wake-up signal timing is LO2, and LO2 occupies P time-domain symbols, where P is an integer greater than or equal to 1. This means the second time-domain resource includes P time-domain symbols. The first duration includes Y time-domain symbols, where Y is an integer greater than or equal to 1. The time interval between the starting time-domain position occupied by LP-SS and the ending time-domain position occupied by LO2 is not less than Y time-domain symbols. The second wake-up signal timing is LO1, and LO1 occupies M time-domain symbols, where M is an integer greater than or equal to 1. This means the third time-domain resource includes M time-domain symbols. The second duration includes X time-domain symbols, where X is an integer greater than or equal to 1. The time interval between the ending time-domain position occupied by LP-SS and the starting time-domain position occupied by LO1 is not less than X time-domain symbols.

[0166] It should be noted that the second duration is similar to the first duration; for details, please refer to the aforementioned introduction to the first duration, which will not be repeated here.

[0167] 905. The first communication device determines whether to wake up the first module based on the second wake-up signal.

[0168] Step 905 is similar to the aforementioned step 903. For details, please refer to the relevant introduction of the aforementioned step 903. It will not be repeated here.

[0169] It should be noted that the execution order of steps 904 to 905 and steps 902 to 903 is determined by the timing of the first wake-up signal and the timing of the second wake-up signal. For example, if the first wake-up signal occurs before the second wake-up signal, then steps 902 to 903 are executed before steps 904 to 905. As another example, if the first wake-up signal occurs after the second wake-up signal, then steps 902 to 903 are executed after steps 904 to 905.

[0170] The method provided in this application is applied to a first communication device, which includes a first module for data transmission and a second module for waking up the first module. The first communication device receives a first synchronization signal from a second communication device on a first time-domain resource. The first synchronization signal is used for time-frequency synchronization between the first and second communication devices. Then, the first communication device monitors the first wake-up signal from the second communication device at a first wake-up signal timing. The time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal timing is not less than a first duration. The time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal timing is used for the second module to adjust its sampling rate. The first communication device determines whether to wake up the first module based on the first wake-up signal. This method is beneficial for improving time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can use a higher sampling rate to receive the first synchronization signal to improve time-frequency synchronization performance. Conversely, the first communication device can use a lower sampling rate to receive the first wake-up signal to reduce its power consumption. For example, the first communication device can reduce its sampling rate during the time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal timing, and then receive the first wake-up signal using the reduced sampling rate, thereby reducing the power consumption of the first communication device. The first communication device increases the sampling rate during the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal, and receives the first synchronization signal through the increased sampling rate to achieve better time-frequency synchronization.

[0171] This application also provides another embodiment, which is similar to... Figure 9The illustrated embodiment is similar; the differences are described below: In this embodiment, the first synchronization signal in step 901 is generated based on a first sequence. The first sequence includes a first sequence portion and a second sequence portion. The first sequence portion is used for time-frequency synchronization between the first communication device and the second communication device. The first sequence portion is carried within a first portion of time-domain resources in the first time-domain resources. The second sequence portion is carried within a second portion of time-domain resources in the first time-domain resources. The first portion of time-domain resources and the second portion of time-domain resources are continuous in the time domain, and the second portion of time-domain resources is used by the second module to adjust the sampling rate.

[0172] Optionally, the symbols in the second sequence are copies of the first R symbols in the first sequence, or copies of the last R symbols in the first sequence. R is an integer greater than or equal to 1. For example, ... Figure 16 As shown, the symbols in the second sequence are copies of the last R symbols in the first sequence. Here, "symbol" refers to the modulation symbols in the first sequence. The first sequence includes one or more modulation symbols.

[0173] It should be noted that the duration of the second part of the time-domain resources in the time domain is the same as that mentioned above. Figure 9 The first duration in step 901 of the illustrated embodiment is similar; please refer to the foregoing description for details. For a description of the second module adjusting the sampling rate, please refer to the foregoing. Figure 9 The relevant descriptions in the illustrated embodiments are as follows.

[0174] In this embodiment, in step 902, in one possible implementation, the end time domain position of the second time domain resource is continuous with the start time domain position of the second part of the time domain resource. In another possible implementation, the start time domain position of the second time domain resource is continuous with the end time domain position of the second part of the time domain resource. For example, as... Figure 16 As shown, the first sequence portion occupies Figure 16 The N time-domain symbols shown represent the first part of the time-domain resources. Figure 16 The first sequence portion shown occupies N time-domain symbols. The second sequence portion occupies... Figure 16 The Y time-domain symbols shown represent the second part of the time-domain resources. Figure 16 The second sequence portion shown occupies Y time-domain symbols. The first wake-up signal timing is LO2, and the end time-domain symbol occupied by LO2 is consecutive to the last time-domain symbol occupied by the second sequence portion.

[0175] Optionally, the first wake-up signal timing includes a first monitoring timing and a second monitoring timing. The first monitoring timing is used to monitor the second synchronization signal. The second synchronization signal is generated based on a second sequence. The second sequence includes a third sequence portion and a fourth sequence portion. The third sequence portion is used for time-frequency synchronization between the first communication device and the second communication device. The third sequence portion carries a portion of the time-domain resources occupied by the first monitoring timing, and the fourth sequence portion carries another portion of the time-domain resources occupied by the first monitoring timing. The other portion of the time-domain resources occupied by the first monitoring timing is used by the second module to adjust the sampling rate. The portion of the time-domain resources occupied by the first monitoring timing and the other portion of the time-domain resources occupied by the first monitoring timing are continuous in the time domain. The second synchronization signal and the first wake-up signal in the second monitoring timing are carried in the same data block. Please refer to the relevant introduction above for information on the sampling rate. The duration of the other portion of the time-domain resources occupied by the first monitoring timing in the time domain is as described above. Figure 9 The third duration in the illustrated embodiment is similar; for details, please refer to the foregoing. Figure 9 The third duration in the illustrated embodiment is described below.

[0176] In this implementation, the time-domain resources occupied by the first synchronization signal and the time-domain resources occupied by the second monitoring opportunity are far apart, therefore the first communication device needs to perform time-frequency synchronization again. The first communication device can receive the second synchronization signal from the second communication device at the first monitoring opportunity. To improve time-frequency synchronization performance, the first communication device can use a higher sampling rate to receive the second synchronization signal from the second communication device on a portion of the time-domain resources occupied by the first monitoring opportunity. To reduce the power consumption of the first communication device, the first communication device can adjust the sampling rate on another portion of the time-domain resources occupied by the first monitoring opportunity. For example, the first communication device can reduce the sampling rate. Then, the first communication device uses the reduced sampling rate to monitor the first wake-up signal at the second monitoring opportunity. For example, the first wake-up signal timing is as follows: Figure 16 As shown in LO1. Figure 17 As shown, the first monitoring opportunity is as follows Figure 17 The preamble monitoring timing is shown below, and the second monitoring timing is as follows: Figure 17 The LP-WUS MO shown. The third sequence portion occupies the first C time-domain symbols of the preamble monitoring timing, where C is an integer greater than or equal to 1. The fourth sequence portion occupies the last D time-domain symbols of the preamble monitoring timing, where D is an integer greater than or equal to 1. The second module monitors the preamble during the first C time-domain symbols of the preamble monitoring timing. After monitoring the preamble, the second module can use the preamble to perform time-frequency synchronization with the second communication device. The second module can reduce the sampling rate during the last D time-domain symbols of the preamble monitoring timing. Then, the second module monitors the first wake-up signal during the low-power wake-up signal monitoring timing using the reduced sampling rate.

[0177] Optionally, the symbols in the fourth sequence portion are copies of the first D symbols of the third sequence portion. Here, "symbol" refers to the modulation symbol. For example, such as... Figure 17 As shown, the symbols in the fourth sequence are copies of the first D symbols of the third sequence. The second sequence includes one or more modulation symbols.

[0178] It should be noted that, optionally, the timing of the first wake-up signal may include more first monitoring timings and second monitoring timings, which are not limited in this application.

[0179] In another possible implementation, the first wake-up signal timing includes a third monitoring timing and multiple fourth monitoring timings. The third monitoring timing is used to monitor a third synchronization signal. The third synchronization signal is generated based on a third sequence. The third sequence includes a fifth sequence portion and a sixth sequence portion. The fifth sequence portion is used for time-frequency synchronization between the communication device monitoring the multiple fourth monitoring timings and the second communication device. The fifth sequence portion carries a portion of the time domain resources occupied by the third monitoring timing, and the sixth sequence portion carries another portion of the time domain resources occupied by the third monitoring timing. The other portion of the time domain resources occupied by the third monitoring timing is used for the communication device monitoring the first wake-up signal in the multiple fourth monitoring timings to adjust the sampling rate. The portion of the time domain resources occupied by the third monitoring timing is continuous with the other portion of the time domain resources occupied by the third monitoring timing. The third synchronization signal and the first wake-up signal in the multiple fourth monitoring timings are located in the same data block. In other words, the third synchronization signal is used for time-frequency synchronization between the communication device monitoring the first wake-up signal in the multiple fourth monitoring timings and the second communication device.

[0180] In one possible implementation, for the first communication device, if the first communication device detects the first wake-up signal during one of a plurality of fourth monitoring times, then the first communication device does not need to continue monitoring the first wake-up signal during subsequent fourth monitoring times. In another possible implementation, the first communication device monitors the first wake-up signal during a plurality of fourth monitoring times to obtain wake-up information for the first communication device.

[0181] In this implementation, the time-domain resources occupied by the first synchronization signal are significantly spaced from the time-domain resources occupied by the multiple fourth monitoring opportunities. Therefore, the first communication device needs to perform time-frequency synchronization again. The first communication device can use a higher sampling rate to receive the fifth sequence portion from the second communication device on a portion of the time-domain resources occupied by the third monitoring opportunity, thereby improving the time-frequency synchronization performance of the first communication device. The first communication device can adjust the sampling rate on another portion of the time-domain resources occupied by the third monitoring opportunity. For example, the first communication device can reduce the sampling rate. The first communication device monitors the first wake-up signal at the multiple fourth monitoring opportunities using the reduced sampling rate. For example, as... Figure 11As shown, the timing of the first wake-up signal is as follows: Figure 11 As shown in LO1. Figure 18 As shown, the third monitoring opportunity is Figure 18 The preamble monitoring timing shown includes multiple fourth monitoring timings, such as... Figure 18 The diagram shows LP-WUS MO1, LP-WUS MO2, LP-WUS MO3, and LP-WUS MO4. The fifth sequence portion is carried on the time-domain symbols occupied during the preamble monitoring time, excluding the last D time-domain symbols. The sixth sequence portion is carried on the last D time-domain symbols occupied during the preamble monitoring time. The second module receives the fifth sequence portion on the time-domain symbols occupied during the preamble monitoring time, excluding the last D time-domain symbols, and performs time-frequency synchronization with the second communication device through the fifth sequence portion. Then, the second module reduces the sampling rate during the last D time-domain symbols occupied during the preamble monitoring time. The second module monitors the first wake-up signal at multiple fourth monitoring times using the reduced sampling rate.

[0182] Optional, such as Figure 18 As shown, the symbols in the sixth sequence are copies of the first D symbols of the fifth sequence. Here, "symbol" refers to the modulation symbol. The third sequence includes one or more modulation symbols.

[0183] It should be noted that the duration of the other portion of time-domain resources occupied by the third monitoring opportunity is the same as that mentioned above. Figure 9 The third duration in the illustrated embodiment is similar; for details, please refer to the foregoing. Figure 9 The third duration in the illustrated embodiment is described below.

[0184] In this embodiment, optionally, the first sequence further includes a seventh sequence portion, which carries a third part of the time-domain resource in the first time-domain resource, and the third part of the time-domain resource is continuous with the first part of the time-domain resource in the time domain.

[0185] In this embodiment, in step 902, if the first part of the time-domain resource follows the second part of the time-domain resource, and the second part of the time-domain resource precedes the second part of the time-domain resource and is time-domain continuous with the second part of the time-domain resource, then the third part of the time-domain resource follows the third part of the time-domain resource and is time-domain continuous with the third part of the time-domain resource; or, if the first part of the time-domain resource precedes the second part of the time-domain resource, and the second part of the time-domain resource follows the second part of the time-domain resource and is time-domain continuous with the second part of the time-domain resource, then the third part of the time-domain resource precedes the third part of the time-domain resource and is time-domain continuous with the third part of the time-domain resource. For example, as... Figure 16 As shown, the first sequence portion occupies Figure 16 The N time-domain symbols shown represent the first part of the time-domain resources. Figure 16The first sequence portion shown occupies N time-domain symbols. The second sequence portion occupies... Figure 16 The Y time-domain symbols shown represent the second part of the time-domain resources. Figure 16 The second sequence portion shown occupies Y time-domain symbols. The first wake-up signal timing is LO2, and the last time-domain symbol occupied by LO2 is consecutive to the last time-domain symbol occupied by the second sequence portion. The seventh sequence portion occupies... Figure 16 The X time-domain symbols shown represent the third part of the time-domain resources. Figure 16 The X time-domain symbols are shown. The starting time-domain position of the third part of the time-domain resources is continuous with the ending time-domain position of the first part of the time-domain resources. The second wake-up signal timing is LO1, and the ending time-domain position of the third part of the time-domain resources is continuous with the starting time-domain position of the time-domain resources occupied by LO1.

[0186] The following is a schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 19 The communication device is used to perform Figure 9 The process executed by the first communication device in the illustrated embodiment can be specifically described in the relevant descriptions of the foregoing method embodiments.

[0187] The communication device 1900 includes a transceiver module 1901 and a processing module 1902.

[0188] The processing module 1902 is used for data processing. The transceiver module 1901 can implement the corresponding communication functions. The transceiver module 1901 can also be called a communication interface or a communication module.

[0189] Optionally, the communication device 1900 may further include a storage module, which can be used to store program code, program instructions and / or data. The processing module 1902 can read the instructions and / or data in the storage module so that the communication device 1900 can implement the aforementioned method embodiments.

[0190] Optionally, the transceiver module 1901 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0191] It should be noted that the communication device 1900 may include a transmitting module but not a receiving module. Alternatively, the communication device 1900 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 1900 includes both transmitting and receiving actions.

[0192] Communication device 1900 can be used to perform Figure 9The actions performed by the first communication device in the illustrated embodiment. For example, the communication module of the first communication device, or the circuitry or chip responsible for communication functions within the first communication device. Communication device 1900 can be the first communication device or a component configured within the first communication device. Processing module 1902 is used to execute... Figure 9 The illustrated embodiment shows processing-related operations on the first communication device side. The transceiver module 1901 is used to perform... Figure 9 The embodiments shown depict the transmit / receive operations on the first communication device side.

[0193] For example, the communication device 1900 is used to execute the following scheme:

[0194] The communication device 1900 includes a first module for data transmission and a second module for waking up the first module;

[0195] The transceiver module 1901 is used to receive a first synchronization signal from the second communication device via the second module on the first time domain resources. The first synchronization signal is used for time-frequency synchronization between the communication device 1900 and the second communication device. At the first wake-up signal timing, the second module monitors the first wake-up signal from the second communication device. The time interval between the first time domain resources and the second time domain resources occupied by the first wake-up signal timing is not less than a first duration. The time interval between the first time domain resources and the second time domain resources occupied by the first wake-up signal timing is used for the second module to adjust the sampling rate. The processing module 1902 is used to determine whether to wake up the first module based on the first wake-up signal.

[0196] For example, the communication device 1900 is used to execute the following scheme:

[0197] The communication device 1900 includes a first module for data transmission and a second module for waking up the first module;

[0198] The transceiver module 1901 is configured to receive a first synchronization signal from a second communication device via a second module on a first time domain resource. The first synchronization signal is generated based on a first sequence, which includes a first sequence portion and a second sequence portion. The first sequence portion is used for time-frequency synchronization between the communication device 1900 and the second communication device. The first sequence portion is carried within a first portion of the first time domain resource, and the second sequence portion is carried within a second portion of the first time domain resource. The first and second portions of the time domain resources are continuous in the time domain, and the second portion of the time domain resource is used by the second module to adjust the sampling rate. The transceiver module also monitors a first wake-up signal from the second communication device via a second module on the second time domain resource occupied by a first wake-up signal. The first portion of the time domain resource is after the second portion of the time domain resource, and the second portion of the time domain resource is before and continuous in the time domain with the second portion of the time domain resource; or, the first portion of the time domain resource is before the second portion of the time domain resource, and the second portion of the time domain resource is after and continuous in the time domain with the second portion of the time domain resource.

[0199] For other implementation methods, please refer to the preceding text. Figure 9 The relevant descriptions of the embodiments shown will not be repeated here.

[0200] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0201] The following is a schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 20 The communication device is used to perform Figure 9 The process executed by the second communication device in the illustrated embodiment can be specifically described in the relevant descriptions of the foregoing method embodiments.

[0202] The communication device 2000 includes a transceiver module 2001. Optionally, the communication device 2000 may also include a processing module 2002.

[0203] The processing module 2002 is used for data processing. The transceiver module 2001 can implement the corresponding communication functions. The transceiver module 2001 can also be called a communication interface or a communication module.

[0204] Optionally, the communication device 2000 may further include a storage module, which can be used to store program code, program instructions and / or data. The processing module 2002 can read the instructions and / or data in the storage module so that the communication device 2000 can implement the aforementioned method embodiments.

[0205] Optionally, the transceiver module 2001 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0206] It should be noted that the communication device 2000 may include a transmitting module but not a receiving module. Alternatively, the communication device 2000 may include a receiving module but not a transmitting module. This depends on whether the above-described scheme executed by the communication device 2000 includes both transmitting and receiving actions.

[0207] Communication device 2000 can be used to perform Figure 9 The actions performed by the second communication device in the illustrated embodiment. For example, the communication module of the second communication device, or the circuitry or chip responsible for communication functions within the second communication device. The communication device 2000 can be the second communication device or a component configured within the second communication device. The processing module 2002 is used to execute... Figure 9 The illustrated embodiment shows the processing-related operations on the second communication device side. The transceiver module 2001 is used to perform... Figure 9 The embodiments shown depict the transmit / receive operations on the second communication device side.

[0208] For example, the communication device 2000 is used to execute the following scheme:

[0209] The transceiver module 2001 is used to send a first synchronization signal to the first communication device on a first time domain resource. The first synchronization signal is used for time-frequency synchronization between the first communication device and the communication device 2000. The transceiver module 2001 is used to send a first wake-up signal to the first communication device at a first wake-up signal timing. The time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing is not less than a first duration. The time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing is used for the first communication device to adjust the sampling rate.

[0210] For example, the communication device 2000 is used to execute the following scheme:

[0211] The transceiver module 2001 is used to send a first synchronization signal to a first communication device on a first time domain resource; wherein the first synchronization signal is generated according to a first sequence, the first sequence includes a first sequence part and a second sequence part, the first sequence part is used for time-frequency synchronization between the first communication device and the communication device 2000, the first sequence part is carried on a first part of the time domain resource in the first time domain resource, the second sequence part is carried on a second part of the time domain resource in the first time domain resource, the first part of the time domain resource and the second part of the time domain resource are continuous in the time domain, and the second part of the time domain resource is used by the second module to adjust the sampling rate; and to send a first wake-up signal to the first communication device on the second time domain resource occupied by the first wake-up signal timing, wherein the first part of the time domain resource is after the second part of the time domain resource, the second part of the time domain resource is before the second part of the time domain resource and is continuous in the time domain with the second part of the time domain resource; or, the first part of the time domain resource is before the second part of the time domain resource, the second part of the time domain resource is after the second part of the time domain resource and is continuous in the time domain with the second part of the time domain resource.

[0212] For other implementation methods, please refer to the preceding text. Figure 9 The relevant descriptions of the embodiments shown will not be repeated here.

[0213] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0214] This application also provides a communication device 2100. Please refer to... Figure 21 The communication device 2100 includes processing circuitry. This processing circuitry may be one or more processors 2110, or all or part of the circuitry within one or more processors 2110 used for processing or control. The processor 2110 is coupled to a memory 2120, which stores computer programs or instructions and / or data. The processor 2110 executes the computer programs or instructions and / or data stored in the memory 2120, causing the methods described in the above method embodiments to be performed. The communication device 2100 is used to implement the operations performed by the first or second communication device in the above method embodiments.

[0215] Optionally, the communication device 210 may include one or more processors 2110.

[0216] Optional, such as Figure 21 As shown, the communication device 2100 may also include a memory 2120.

[0217] Optionally, the communication device 2100 may include one or more memory 2120.

[0218] Optionally, the memory 2120 can be integrated with the processor 2110 or set separately.

[0219] Optional, such as Figure 21 As shown, the communication device 2100 may further include a transceiver circuit. This transceiver circuit may be a transceiver 2130, an input / output circuit, or an input / output interface. The transceiver circuit is used for receiving and / or transmitting signals. For example, the processor 2110 is used to control the transceiver 2130 to receive and / or transmit signals.

[0220] For example, when the communication device 2100 is the aforementioned first communication device or the second communication device, the aforementioned processing circuit may be one or more processors 2110, or all or part of the circuits in one or more processors 2110 used for processing or control, and the aforementioned transceiver circuit may be a transceiver 2130.

[0221] For example, when the communication device 2100 is a chip used in the aforementioned terminal device or access network device, such as a system-on-a-chip (SoC) or a baseband chip, the aforementioned processing circuit can be one or more processors 2110, or all or part of the circuits in one or more processors 2110 used for processing or control, and the aforementioned transceiver circuit can be an input / output circuit.

[0222] The following is through Figure 22 A schematic diagram of a possible structure of a terminal device is shown.

[0223] Figure 22 A simplified schematic diagram of a terminal device is shown. For ease of understanding and illustration, Figure 22 In this context, the terminal device is taken as a mobile phone. For example... Figure 22 As shown, the terminal device includes a processor, memory, radio frequency circuit, antenna, and input / output devices.

[0224] The processor is mainly used to process communication protocols and communication data, control terminal devices, execute software programs, and process data from software programs.

[0225] Memory is mainly used to store software programs and data.

[0226] Radio frequency (RF) circuits are mainly used for the conversion between baseband signals and RF signals, as well as for the processing of RF signals.

[0227] Antennas are primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.

[0228] Input / output devices, such as touchscreens, displays, and keyboards, are primarily used to receive user input data and output data to the user.

[0229] It should be noted that some types of terminal devices may not have input / output devices.

[0230] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor then converts the baseband signal back into data and processes it.

[0231] For ease of explanation, Figure 22 Only one memory and processor are shown in the illustration. In actual terminal device products, there may be one or more processors and one or more memories. Memory may also be referred to as storage medium or storage device, etc. Memory may be set up independently of the processor or integrated with the processor; this application does not limit this.

[0232] In this embodiment, the antenna and radio frequency circuit with transceiver functions can be considered as the transceiver module of the terminal device, and the processor with processing functions can be considered as the processing module of the terminal device. Figure 22 As shown, the terminal device includes a transceiver module 2210 and a processing module 2220. The transceiver module can also be called a transceiver unit, transceiver machine, transceiver device, etc. The processing module can also be called a processor, processing board, processing module, processing device, etc.

[0233] Optionally, the device in transceiver module 2210 used for receiving can be considered as a receiving module, and the device in transceiver module 2210 used for transmitting can be considered as a transmitting module. That is, transceiver module 2210 includes both a receiving module and a transmitting module. A transceiver module may also be called a transceiver, transceiver unit, or transceiver circuit, etc. A receiving module may also be called a receiver, receiver, or receiving circuit, etc. A transmitting module may also be called a transmitter, transmitter unit, or transmitting circuit, etc.

[0234] It should be understood that the transceiver module 2210 is used to perform the sending and receiving operations of the first communication device in the above method embodiment, and the processing module 2220 is used to perform other operations on the first communication device in the above method embodiment besides the sending and receiving operations.

[0235] When the terminal device is a chip, the chip includes a transceiver module and a processing module. The transceiver module can be an input / output circuit or a communication interface; the processing module is a processor, microprocessor, integrated circuit, or logic circuit integrated on the chip.

[0236] This application also provides a communication system, which includes... Figure 9 The first communication device and the second communication device in the illustrated embodiment.

[0237] This application also provides a chip device, including a processor, configured to call computer programs or computer instructions stored in the memory, so that the processor executes the above-described... Figure 9 The method of the embodiment shown.

[0238] In one possible implementation, the input of the chip device corresponds to the above. Figure 9 The receiving operation in the illustrated embodiment corresponds to the output of the chip device described above. Figure 9 The sending operation in the illustrated embodiment.

[0239] Optionally, the processor may be coupled to the memory via an interface, or the processor may be integrated with the memory.

[0240] Optionally, the chip device may also include a memory that stores computer programs or computer instructions.

[0241] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more devices used to control the above. Figure 9 The illustrated embodiment is an integrated circuit for program execution of the method. The memory mentioned above may be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM).

[0242] This application also provides a computer program product including computer instructions, which, when run on a computer, causes the computer to perform the above-described actions. Figure 9 The method of the embodiment shown.

[0243] This application also provides a computer-readable storage medium, including computer instructions, which, when executed on a computer, cause the computer to perform the above-described actions. Figure 9 The method of the embodiment shown.

[0244] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0245] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0246] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0247] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0248] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A communication method characterized by comprising: The method is applied to a first communication device including a first module for data transmission and a second module for waking up the first module; the method includes: receiving, by the second module, a first synchronization signal from a second communication device on a first time domain resource, the first synchronization signal being used for time-frequency synchronization between the first communication device and the second communication device; monitoring, by the second module, a first wake-up signal sent by the second communication device on a first wake-up signal occasion, a time interval between the first time domain resource and a second time domain resource occupied by the first wake-up signal occasion being not less than a first time length; the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion being used for the second module to adjust a sampling rate; determining whether to wake up the first module according to the first wake-up signal.

2. The method of claim 1, wherein, The time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion is not less than a first time length, including: The first time domain resource is after the second time domain resource, and a time interval between a starting time domain position occupied by the first time domain resource and an ending time domain position occupied by the second time domain resource is not less than the first time length; or The first time domain resource is before the second time domain resource, and a time interval between an ending time domain position occupied by the first time domain resource and a starting time domain position occupied by the second time domain resource is not less than the first time length.

3. The method according to claim 1 or 2, characterized in that, The method further includes: monitoring a second wake-up signal sent by the second communication device on a second wake-up signal occasion; wherein a third time domain resource occupied by the second wake-up signal occasion and the first time domain resource have a time interval not less than a second time length, the first time domain resource is before the second time domain resource and after the third time domain resource, or the first time domain resource is before the third time domain resource and after the second time domain resource, and the time interval between the third time domain resource occupied by the second wake-up signal occasion and the first time domain resource is used for the second module to adjust the sampling rate.

4. The method according to any one of claims 1 to 3, characterized in that, The first synchronization signal corresponds to multiple sending directions, a time interval between a starting time domain resource occupied by a first synchronization signal sent in a first sending direction of the multiple sending directions and an ending time domain position of the second time domain resource is not less than the first time length; or a time interval between an ending time domain position occupied by a first synchronization signal sent in a last sending direction of the multiple sending directions and a starting time domain position of the second time domain resource is not less than the first time length.

5. The method according to any one of claims 1 to 4, characterized in that, The first wake-up signal occasion comprises a first monitoring occasion and a second monitoring occasion, the first monitoring occasion is used for monitoring a second synchronization signal, a time interval between time domain resources occupied by the first monitoring occasion and time domain resources occupied by the second monitoring occasion is not less than a third time length, the time interval between the time domain resources occupied by the first monitoring occasion and the time domain resources occupied by the second monitoring occasion is used for the second module to adjust a sampling rate, and the second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block.

6. The method according to any one of claims 1 to 4, characterized in that, The first wake-up signal occasion comprises a third monitoring occasion and a plurality of fourth monitoring occasions, the third monitoring occasion is used for monitoring a third synchronization signal, a time interval between time domain resources occupied by the third monitoring occasion and time domain resources occupied by the plurality of fourth monitoring occasions is not less than a fourth time length, the time interval between the time domain resources occupied by the third monitoring occasion and the time domain resources occupied by the plurality of fourth monitoring occasions is used for the second module to adjust a sampling rate, and the third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a same data block.

7. The method according to any one of claims 1 to 6, characterized in that, The first synchronization signal is a synchronization signal block (SSB), a low-power synchronization signal (LP-SS), or a tracking reference signal (TRS).

8. A communication method characterized by comprising: The method is applied to a second communication device; the method comprises: sending, to a first communication device, a first synchronization signal on a first time domain resource, the first synchronization signal being used for the first communication device to perform time-frequency synchronization with the second communication device; sending, to the first communication device, a first wake-up signal on a first wake-up signal occasion, a time interval between the first time domain resource and second time domain resources occupied by the first wake-up signal occasion is not less than a first time length, and the time interval between the first time domain resource and the second time domain resources occupied by the first wake-up signal occasion is used for the first communication device to adjust a sampling rate.

9. The method of claim 8, wherein, The time interval between the first time domain resource and the second time domain resources occupied by the first wake-up signal occasion is not less than a first time length, comprising: The first time domain resource is after the second time domain resource, a time interval between a starting time domain position occupied by the first time domain resource and an ending time domain position occupied by the second time domain resource is not less than the first time length; or, The first time domain resource is before the second time domain resource, a time interval between an ending time domain position occupied by the first time domain resource and a starting time domain position occupied by the second time domain resource is not less than the first time length.

10. The method according to claim 8 or 9, characterized in that, The second communication device does not send a signal within the first time length.

11. The method according to any one of claims 8 to 10, characterized in that, The method further comprises: sending, to the first communication device, a second wake-up signal on third time domain resources occupied by a second wake-up signal occasion; The time interval between the third time domain resource occupied by the second wake-up signal occasion and the first time domain resource is not less than a second time length, the first time domain resource is before the second time domain resource and after the third time domain resource, or the first time domain resource is before the third time domain resource and after the second time domain resource, and the time interval between the third time domain resource occupied by the second wake-up signal occasion and the first time domain resource is used for the first communication device to adjust a sampling rate.

12. The method according to any one of claims 8 to 11, characterized in that, The first synchronization signal is transmitted to the first communication device on the first time domain resource, including: The first synchronization signal is transmitted to the first communication device on the first time domain resource through multiple transmission directions. The time interval between the starting time domain resource occupied by the first synchronization signal transmitted through the first transmission direction in the multiple transmission directions and the ending time domain position of the second time domain resource is not less than the first time length, or the time interval between the ending time domain position of the first synchronization signal transmitted through the last transmission direction in the multiple transmission directions and the starting time domain position of the second time domain resource is not less than the first time length.

13. The method according to any one of claims 8 to 12, characterized in that, The first wake-up signal occasion includes a first monitoring occasion and a second monitoring occasion, the first monitoring occasion is used for monitoring a second synchronization signal, the time interval between the time domain resource occupied by the first monitoring occasion and the time domain resource occupied by the second monitoring occasion is not less than a third time length, the time interval between the time domain resource occupied by the first monitoring occasion and the time domain resource occupied by the second monitoring occasion is used for the first communication device to adjust a sampling rate, and the second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block.

14. The method according to any one of claims 8 to 12, characterized in that, The first wake-up signal occasion includes a third monitoring occasion and multiple fourth monitoring occasions, the third monitoring occasion is used for monitoring a third synchronization signal, the time interval between the time domain resource occupied by the third monitoring occasion and the time domain resource occupied by the multiple fourth monitoring occasions is not less than a fourth time length, the time interval between the time domain resource occupied by the third monitoring occasion and the time domain resource occupied by the multiple fourth monitoring occasions is used for the first communication device to adjust a sampling rate, and the third synchronization signal and the first wake-up signal in the multiple fourth monitoring occasions are located in a same data block.

15. The method according to any one of claims 8 to 14, characterized in that, The first synchronization signal is a synchronization signal block (SSB), a low-power synchronization signal (LP-SS), or a tracking reference signal (TRS).

16. A communications device, characterized by The communication device includes a module for performing the transceiving operation of the method in any one of claims 1 to 7 and a module for performing the processing operation of the method in any one of claims 1 to 7; or The communication device includes a module for performing the transceiving operation of the method in any one of claims 8 to 15 and a module for performing the processing operation of the method in any one of claims 8 to 15.

17. A communications device, characterized by The communication device comprises a processor for executing a computer program or computer instructions in a memory, such that the method according to any one of claims 1 to 7 is implemented, or such that the method according to any one of claims 8 to 15 is implemented.

18. The apparatus of claim 17, wherein, The device further comprises a transceiver, the processor and the transceiver being connected to each other by a line.

19. A computer-readable storage medium, characterized in that, A computer program is stored thereon, the computer program being executed such that the method according to any one of claims 1 to 15 is implemented.

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