Communication method and related apparatus

Abstract

Provided in the embodiments of the present application are a communication method and a related apparatus, which are used for improving time-frequency synchronization performance and / or reducing the power consumption of a first communication apparatus. The first communication apparatus comprises a first module for data transmission and a second module for waking up the first module. The method comprises: receiving, on a first time-domain resource and by means of a second module, a first synchronization signal from a second communication apparatus, wherein the first synchronization signal is used by a first communication apparatus to perform time-frequency synchronization with the second communication apparatus; monitoring, on a first wake-up signal occasion and by means of the second module, a first wake-up signal from the second communication apparatus, wherein a time interval between the first time-domain resource and a second time-domain resource occupied by the first wake-up signal occasion is 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 occasion is used by the second module to adjust a sampling rate; and on the basis of the first wake-up signal, determining whether to wake up a first module.

Description

Communication method and related apparatus

[0001] The present application claims priority to the Chinese Patent Application No. 202411392565.9, filed on September 30, 2024, and entitled "Communication method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to a communication method and related apparatus. BACKGROUND

[0003] In order to reduce the power consumption of a terminal device, a research topic of a low power wake-up signal (LP-WUS) is introduced in a release 18 (R18) and a release 19 (R19) in a new radio (NR), and the purpose is to study a power consumption reduction scheme for a terminal device in various radio resource control (RRC) states.

[0004] At present, a network device can send a low power synchronization signal (LP-SS), and then a terminal device performs time-frequency synchronization with the network device through the LP-SS. The network device sends an LP-WUS to the terminal device to wake up the terminal device. However, how the network device should send the LP-SS and the LP-WUS to improve the time-frequency synchronization performance and / or reduce the power consumption of the terminal device is a problem worth considering. SUMMARY

[0005] The present application provides a communication method and related apparatus for improving the time-frequency synchronization performance and / or reducing the power consumption of a first communication apparatus. For example, the first communication apparatus can receive a first synchronization signal at a higher sampling rate to improve the time-frequency synchronization performance. The first communication apparatus can receive a first wake-up signal at a lower sampling rate to reduce the power consumption of the first communication apparatus. For example, the first communication apparatus reduces the sampling rate in a time interval between a first time domain resource and a second time domain resource occupied by a first wake-up signal occasion, and then receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication apparatus. For another example, the first communication apparatus increases the sampling rate in a time interval between a first time domain resource and a second time domain resource occupied by a first wake-up signal occasion, and then receives the first synchronization signal at the increased sampling rate to achieve better time-frequency synchronization.

[0006] The first aspect of the present application provides a communication method, which can be applied to a first communication device, such as being executed by the first communication device, the first communication device can be a terminal device, or a component (for example, a processor, a chip, or a chip system, etc.) in the terminal device, or a logic module or software capable of realizing all or part of the terminal device functions. The first communication device includes a first module for data transmission and a second module for waking up the first module; the method comprises: the first communication device receives a first synchronization signal from a second communication device through the second module on a first time domain resource, the first synchronization signal being used for the first communication device and the second communication device to perform time-frequency synchronization; the first communication device monitors a first wake-up signal from the second communication device through the second module 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 is used for the second module to adjust a sampling rate; and the first communication device determines whether to wake up the first module according to the first wake-up signal.

[0007] 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 occasion is not less than the first time length; and the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion is used for the second module to adjust the sampling rate. This is beneficial to improve the time-frequency synchronization performance and / or reduce the power consumption of the first communication device. For example, the first communication device can receive the first synchronization signal by using a higher sampling rate to improve the time-frequency synchronization performance. And the first communication device can receive the first wake-up signal by using a lower sampling rate to reduce the power consumption of the first communication device. For example, the first communication device reduces the sampling rate of the first communication device in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion, and then receives the first wake-up signal by using the reduced sampling rate, thereby reducing the power consumption of the first communication device. The first communication device improves the sampling rate in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion, and receives the first synchronization signal by using the improved sampling rate, so as to achieve better time-frequency synchronization.

[0008] In a possible implementation manner of the first aspect, 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 the first time length, including: the first time domain resource is after the second time domain resource, and the time interval between the starting time domain position occupied by the first time domain resource and the 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 the time interval between the ending time domain position occupied by the first time domain resource and the starting time domain position occupied by the second time domain resource is not less than the first time length. Two possible implementation manners of the position relationship between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion are shown. The application scenarios of the scheme are enriched. Specifically, the first communication apparatus can receive the first wake-up signal before receiving the first synchronization signal; or, the first communication apparatus can receive the first synchronization signal before receiving the first wake-up signal.

[0009] In a possible implementation manner of the first aspect, the method further includes: the first communication apparatus monitors a second wake-up signal from a second communication apparatus on a second wake-up signal occasion; wherein 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 second module to adjust the sampling rate. In this implementation manner, the first communication apparatus further receives the second wake-up signal before or after the first communication apparatus receives the first synchronization signal. Therefore, 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. This is conducive to the first communication apparatus to better perform time-frequency synchronization through the first synchronization signal and / or reduce the power consumption of the first communication apparatus.

[0010] In a possible implementation manner of the first aspect, the first synchronization signal corresponds to multiple transmission directions, the time interval between the starting time domain resource occupied by the first synchronization signal transmitted in the first transmission direction of 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 occupied by the first synchronization signal transmitted in the last transmission direction of the multiple transmission directions and the starting time domain position of the second time domain resource is not less than the first time length. In the scenario that the first synchronization signal corresponds to multiple transmission directions, the position relationship between the first time domain resource occupied by the first synchronization signal and the second time domain resource is further limited. The signal coverage of the multiple transmission directions is implemented, which is conducive to the time-frequency synchronization of the terminal devices of the multiple transmission directions.

[0011] In a possible implementation manner of the first aspect, 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, 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 adjusting a sampling rate of the second module, the second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block. In this way, the second synchronization signal on the first monitoring occasion is used for time-frequency synchronization of the first communication apparatus. 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 adjusting the sampling rate of the second module. The sampling rate of the first communication apparatus is reduced in 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. Then, the first communication apparatus receives the first wake-up signal by using the reduced sampling rate. In this way, the power consumption of the first communication apparatus is reduced.

[0012] In a possible implementation manner of the first aspect, the first wake-up signal occasion includes 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 adjusting a sampling rate of the second module, the third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a same data block. In this way, the first communication apparatus can adjust the sampling rate in 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. The sampling rate of the first communication apparatus is reduced in 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. Then, the first communication apparatus receives the first wake-up signal by using the reduced sampling rate. In this way, the power consumption of the first communication apparatus is reduced.

[0013] In a possible implementation manner of the first aspect, the first synchronization signal is a synchronization signal block (SSB), a low power synchronization signal block (LP-SS), or a tracking reference signal (TRS).

[0014] The second aspect of the present application provides a communication method, which can be applied to a second communication device, such as being executed by the second communication device, the second communication device can be a network device, or a component (for example, a processor, a chip, or a chip system, etc.) in the network device, or a logic module or software capable of realizing all or part of the network device functions. The method comprises: the second communication device sends a first synchronization signal to a first communication device on a first time domain resource, the first synchronization signal is used for the first communication device to perform time-frequency synchronization with the second communication device; and the second communication device sends a first wake-up signal to the first 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 is not less than a first time length, and the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion is used for the first communication device to adjust a sampling rate.

[0015] 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 occasion is not less than the first time length, and the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion is used for the first communication device to adjust the sampling rate. This is beneficial to improve the time-frequency synchronization performance and / or reduce the power consumption of the first communication device. For example, the first communication device can receive the first synchronization signal by using a higher sampling rate to improve the time-frequency synchronization performance. The first communication device can receive the first wake-up signal by using a lower sampling rate to reduce the power consumption of the first communication device. For example, the first communication device reduces the sampling rate of the first communication device in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion, and then receives the first wake-up signal by using the reduced sampling rate, thereby reducing the power consumption of the first communication device. The first communication device improves the sampling rate in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion, and receives the first synchronization signal by using the improved sampling rate, so as to achieve better time-frequency synchronization.

[0016] In a possible implementation manner of the second aspect, 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 the first time length, including: the first time domain resource is after the second time domain resource, and the time interval between the starting time domain position occupied by the first time domain resource and the 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 the time interval between the ending time domain position occupied by the first time domain resource and the starting time domain position occupied by the second time domain resource is not less than the first time length. Two possible implementation manners of the position relationship between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion are shown. The application scenarios of the scheme are enriched. Specifically, the first communication apparatus can receive the first wake-up signal before receiving the first synchronization signal; or, the first communication apparatus can receive the first synchronization signal before receiving the first wake-up signal.

[0017] In a possible implementation manner of the second aspect, the second communication apparatus does not send a signal in the first time length.

[0018] In a possible implementation manner of the second aspect, the method further includes: the second communication apparatus sends a second wake-up signal to the first communication apparatus on a third time domain resource occupied by a second wake-up signal occasion; 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 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 apparatus to adjust a sampling rate. In this implementation manner, the second communication apparatus sends the 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 occasion and the first time domain resource is used for the first communication apparatus to adjust the sampling rate. This is conducive to the first communication apparatus to better perform time-frequency synchronization through the first synchronization signal and / or reduce the power consumption of the first communication apparatus.

[0019] In a possible implementation manner of the second aspect, the second communication device sends the first synchronization signal to the first communication device on the first time domain resource, including: the second communication device sends the first synchronization signal to the first communication device on the first time domain resource through a plurality of sending directions; and a time interval between a starting time domain resource occupied by the first synchronization signal sent through a first sending direction of the plurality of 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 the ending time domain position occupied by the first synchronization signal sent through a last sending direction of the plurality of sending directions and a starting time domain position of the second time domain resource is not less than the first time length. In the case that the first synchronization signal corresponds to a plurality of sending directions, the position relationship between the first time domain resource occupied by the first synchronization signal and the second time domain resource is further limited. The signal coverage of the plurality of sending directions is implemented, and the time-frequency synchronization of the terminal devices of the plurality of sending directions is facilitated.

[0020] In a possible implementation manner of the second aspect, the first wake-up signal occasion includes a first monitoring occasion and a second monitoring occasion, the first monitoring occasion is used for monitoring the 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 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. The sampling rate of the first communication device is reduced in 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. Then, the first communication device receives the first wake-up signal by using the reduced sampling rate. Therefore, the power consumption of the first communication device is reduced.

[0021] In a possible implementation manner of the second aspect, the first wake-up signal occasion includes a third monitoring occasion and a plurality of fourth monitoring occasions, the third monitoring occasion is used for monitoring the 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 first communication device 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. Therefore, the first communication device can adjust the sampling rate in 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. The sampling rate of the first communication device is reduced in 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. Then, the first communication device receives the first wake-up signal by using the reduced sampling rate. Therefore, the power consumption of the first communication device is reduced.

[0022] In a possible implementation manner of the second aspect, the first synchronization signal is an SSB, an LP-SS, or a TRS.

[0023] The third aspect of the present application provides a communication method, which can be applied to a first communication device, such as being executed by the first communication device. The first communication device can be a terminal device, or a component (for example, a processor, a chip, or a chip system, etc.) in the terminal device, or a logic module or software capable of realizing all or part of the terminal device 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: receiving, by the first communication device through the second module, a first synchronization signal from a second 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 second communication device, the first sequence part is carried in a first part of the time domain resource in the first time domain resource, the second sequence part is carried in 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 for the second module to adjust a sampling rate; and monitoring, by the first communication device through the second module, a first wake-up signal from the second communication device on a second time domain resource occupied by the first wake-up signal occasion, wherein the first part of the time domain resource is after the second part of the time domain resource, the second time domain resource is before and continuous with the second part of the time domain resource in the time domain; or the first part of the time domain resource is before the second part of the time domain resource, the second time domain resource is after and continuous with the second part of the time domain resource in the time domain.

[0024] In the technical solution, the first synchronization signal is generated according to the 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 second communication device, and the first sequence part is carried in a first part of time domain resources in the first time domain resource. The second sequence part is carried in a second part of time domain resources in the first time domain resource. The first part of time domain resources and the second part of time domain resources are continuous in the time domain, and the second part of time domain resources is used for the second module to adjust the sampling rate. This is beneficial to improve the time-frequency synchronization performance and / or reduce the power consumption of the first communication device. For example, the first communication device can receive the first synchronization signal by using a higher sampling rate to improve the time-frequency synchronization performance. The first communication device reduces the sampling rate of the first communication device in the second part of time domain resources, and the first communication device can receive the first wake-up signal by using a lower sampling rate to reduce the power consumption of the first communication device. For another example, the first communication device can receive the first wake-up signal by using a lower sampling rate to reduce the power consumption of the first communication device. Then, the first communication device increases the sampling rate of the first communication device in the second part of time domain resources, and receives the first synchronization signal by using the increased sampling rate to achieve better time-frequency synchronization.

[0025] Based on the third aspect, in a 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 time domain resources, 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 time domain resources. Two possible implementation modes of the position relationship between the second time domain resource and the second part of time domain resources are shown, which enriches the applicable scenarios of the scheme.

[0026] Based on the third aspect, in a possible implementation, the symbols in the second sequence part are a copy of the first R symbols in the first sequence part or a copy of the last R symbols in the first sequence part, and R is an integer greater than 1 or equal to 1. Thus, the cyclic shift is realized, which is beneficial to the reception and analysis of the first communication device on the first synchronization signal.

[0027] In a possible implementation manner of the third aspect, 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, the second synchronization signal is generated according to a second sequence, the second sequence comprises a third sequence part and a fourth sequence part, the third sequence part is used for time-frequency synchronization between the first communication apparatus and the second communication apparatus, the third sequence part is carried in a part of time domain resources occupied by the first monitoring occasion, the fourth sequence part is carried in another part of time domain resources occupied by the first monitoring occasion, the other part of time domain resources occupied by the first monitoring occasion is used for adjusting a sampling rate by the second module, the part of time domain resources occupied by the first monitoring occasion and the other part of time domain resources occupied by the first monitoring occasion are continuous in time domain, and the second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block. The sampling rate of the first communication apparatus is reduced on the other part of time domain resources occupied by the first monitoring occasion. Then, the first communication apparatus receives the first wake-up signal by using the reduced sampling rate. In this way, the power consumption of the first communication apparatus is reduced.

[0028] In a possible implementation manner of the third aspect, 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, the third synchronization signal is generated according to a third sequence; the third sequence comprises a fifth sequence part and a sixth sequence part; the fifth sequence part is used for time-frequency synchronization between a communication apparatus monitoring the plurality of fourth monitoring occasions and the second communication apparatus; the fifth sequence part is carried in a part of time domain resources occupied by the third monitoring occasion, the sixth sequence part is carried in another part of time domain resources occupied by the third monitoring occasion; the other part of time domain resources occupied by the third monitoring occasion is used for adjusting a sampling rate by a communication apparatus monitoring the first wake-up signal in the plurality of fourth monitoring occasions; the part of time domain resources occupied by the third monitoring occasion and the other part of time domain resources occupied by the third monitoring occasion are continuous. The third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a same data block. In this way, the sampling rate of the first communication apparatus can be adjusted in the other part of time domain resources occupied by the third monitoring occasion. The sampling rate of the first communication apparatus is reduced in the other part of time domain resources occupied by the third monitoring occasion. Then, the first communication apparatus receives the first wake-up signal by using the reduced sampling rate. In this way, the power consumption of the first communication apparatus is reduced.

[0029] In a possible implementation manner based on the third aspect, the first sequence further includes a seventh sequence part, the seventh sequence part is carried in a third part of time domain resources in the first time domain resources, and the third part of time domain resources is continuous with the first part of time domain resources in the time domain; the method further includes: monitoring, by the first communication apparatus through the second module, the second wake-up signal from the second communication apparatus on the third time domain resources occupied by the second wake-up signal occasion; if the first part of time domain resources is after the second part of time domain resources, the second time domain resources are before and continuous with the second part of time domain resources in the time domain, the third time domain resources are after and continuous with the third part of time domain resources in the time domain; or, the first part of time domain resources is before the second part of time domain resources, the second time domain resources are after and continuous with the second part of time domain resources in the time domain, the third time domain resources are before and continuous with the third part of time domain resources in the time domain. It can be known that in the implementation manner, the first communication apparatus further receives the second wake-up signal before or after the first communication apparatus receives the first synchronization signal. Therefore, the third part of time domain resources is used for the second module to adjust the sampling rate. This is conducive to the first communication apparatus to better perform time-frequency synchronization through the first synchronization signal and / or reduce the power consumption of the first communication apparatus.

[0030] In a possible implementation manner based on the third aspect, the starting time domain position of the third part of time domain resources is continuous with the ending time domain position of the first part of time domain resources; or the ending time domain resource of the third part of time domain resources is continuous with the starting time domain position of the first part of time domain resources.

[0031] The fourth aspect of the present application provides a communication method, which can be applied to a second communication device, such as being executed by the second communication device, the second communication device can be a network device, or a component (for example, a processor, a chip, or a chip system, etc.) in the network device, or a logic module or software capable of realizing all or part of the network device functions. The method comprises: the second communication device sends 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 comprises a first sequence part and a second sequence part, the first sequence part is used for the first communication device and the second communication device to perform time-frequency synchronization, the first sequence part is carried in a first part time domain resource in the first time domain resource, the second sequence part is carried in a second part time domain resource in the first time domain resource, the first part time domain resource and the second part time domain resource are continuous in time domain, and the second part time domain resource is used for the second module to adjust the sampling rate; the second communication device sends a first wake-up signal to the first communication device on a second time domain resource occupied by the first wake-up signal occasion, wherein the first part time domain resource is after the second part time domain resource, the second time domain resource is before and continuous with the second part time domain resource in time domain; or, the first part time domain resource is before the second part time domain resource, and the second time domain resource is after and continuous with the second part time domain resource in time domain.

[0032] In the above technical solution, the first synchronization signal is generated according to the first sequence, the first sequence comprises the first sequence part and the second sequence part, the first sequence part is used for the first communication device and the second communication device to perform time-frequency synchronization, and the first sequence part is carried in the first part time domain resource in the first time domain resource. The second sequence part is carried in the second part time domain resource in the first time domain resource. The first part time domain resource and the second part time domain resource are continuous in time domain, and the second part time domain resource is used for the second module to adjust the sampling rate. This is beneficial to improve the time-frequency synchronization performance and / or reduce the power consumption of the first communication device. For example, the first communication device can receive the first synchronization signal by using a higher sampling rate to improve the time-frequency synchronization performance. The first communication device reduces the sampling rate of the first communication device on the second part time domain resource, and the first communication device can receive the first wake-up signal by using a lower sampling rate to reduce the power consumption of the first communication device. For another example, the first communication device can receive the first wake-up signal by using a lower sampling rate to reduce the power consumption of the first communication device. Then, the first communication device increases the sampling rate of the first communication device on the second part time domain resource, and receives the first synchronization signal by using the increased sampling rate to achieve better time-frequency synchronization.

[0033] In a possible implementation manner of the fourth aspect, a starting time domain position of the second time domain resource is continuous with an ending time domain position of the second partial time domain resource, or an ending time domain position of the second time domain resource is continuous with a starting time domain position of the second partial time domain resource. Two possible implementation manners of the position relationship between the second time domain resource and the second partial time domain resource are shown, which enriches the applicable scenarios of the scheme.

[0034] In a possible implementation manner of the fourth aspect, a symbol in the second sequence part is a copy of the first R symbols in the first sequence part, or a copy of the last R symbols in the first sequence part, R being an integer greater than 1 or equal to 1. Thus, the cyclic shift is implemented, which is beneficial to the receiving and analyzing of the first communication apparatus on the first synchronization signal.

[0035] In a possible implementation manner of the fourth aspect, 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 second synchronization signal is generated according to a second sequence, the second sequence includes a third sequence part and a fourth sequence part, the third sequence part is used for time-frequency synchronization between the first communication apparatus and the second communication apparatus, the third sequence part is carried in a part of time domain resources occupied by the first monitoring occasion, the fourth sequence part is carried in another part of time domain resources occupied by the first monitoring occasion, the other part of time domain resources occupied by the first monitoring occasion is used for adjusting a sampling rate of the second module, the part of time domain resources occupied by the first monitoring occasion and the other part of time domain resources occupied by the first monitoring occasion are continuous in the time domain, and the second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block. The sampling rate of the first communication apparatus is reduced on the other part of time domain resources occupied by the first monitoring occasion. Then, the first communication apparatus receives the first wake-up signal through the reduced sampling rate. Thus, the power consumption of the first communication apparatus is reduced.

[0036] In a possible implementation manner of the fourth aspect, the first wake-up signal occasion includes a third monitoring occasion and a plurality of fourth monitoring occasions; the third monitoring occasion is used for monitoring a third synchronization signal, and the third synchronization signal is generated according to a third sequence; the third sequence includes a fifth sequence part and a sixth sequence part; the fifth sequence part is used for time-frequency synchronization between a communication device of the plurality of fourth monitoring occasions and the second communication device; the fifth sequence part is carried in a part of time domain resources occupied by the third monitoring occasion, and the sixth sequence part is carried in another part of time domain resources occupied by the third monitoring occasion; the other part of time domain resources occupied by the third monitoring occasion is used for the communication device of the first wake-up signal in the plurality of fourth monitoring occasions to adjust a sampling rate; the part of time domain resources occupied by the third monitoring occasion is continuous with the other part of time domain resources occupied by the third monitoring occasion. The third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a same data block. In this way, the first communication device can adjust the sampling rate in the other part of time domain resources occupied by the third monitoring occasion. The sampling rate of the first communication device is reduced in the other part of time domain resources occupied by the third monitoring occasion. Then, the first communication device receives the first wake-up signal by using the reduced sampling rate. In this way, the power consumption of the first communication device is reduced.

[0037] In a possible implementation manner of the fourth aspect, the first sequence further includes a seventh sequence part, the seventh sequence part is carried in a third part of time domain resources in the first time domain resources, and the third part of time domain resources is continuous with the first part of time domain resources in the time domain; the method further includes: the second communication device sends a second wake-up signal to the first communication device on a third time domain resource occupied by a second wake-up signal occasion; if the first part of time domain resources is after the second part of time domain resources, the second time domain resources are before and continuous with the second part of time domain resources in the time domain, the third time domain resources are after and continuous with the third part of time domain resources in the time domain; or, the first part of time domain resources is before the second part of time domain resources, the second time domain resources are after and continuous with the second part of time domain resources in the time domain, the third time domain resources are before and continuous with the third part of time domain resources in the time domain. In this implementation manner, the first communication device receives the second wake-up signal before or after the first communication device receives the first synchronization signal. Therefore, the third part of time domain resources is used for the second module to adjust the sampling rate. This is conducive to the first communication device to better perform time-frequency synchronization and / or reduce the power consumption of the first communication device by using the first synchronization signal.

[0038] In a possible implementation manner of the fourth aspect, a starting time domain position of the third part of time domain resources is continuous with an ending time domain position of the first part of time domain resources; or, an ending time domain resource of the third part of time domain resources is continuous with a starting time domain position of the first part of time domain resources.

[0039] The fifth aspect of the present application provides a communication apparatus for performing the method provided in any one of the preceding first aspect to fourth aspect or any one of the possible implementation manners of the first aspect to fourth aspect.

[0040] In an example, the communication apparatus can include one or more modules, such as a transceiver module, and further include a processing module.

[0041] The transceiver module is configured to perform the receiving and / or transmitting steps in the above method, and the processing module is configured to perform one or more of the determining, measuring, obtaining, etc. steps in the above method.

[0042] The sixth aspect of the present application provides a communication apparatus including a processing circuit. The processing circuit is configured to invoke a computer program or computer instructions in a memory, so that the processing circuit implements any one of the implementation manners in any one of the first aspect to fourth aspect.

[0043] Optionally, the communication apparatus further includes a memory in which the computer program or computer instructions are stored.

[0044] Optionally, the processing circuit can be one or more processors, or a circuit for processing or control function in the one or more processors.

[0045] Optionally, the processing circuit is integrated with the memory.

[0046] Optionally, the communication apparatus further includes a transceiver circuit, and the processing circuit is configured to control the transceiver circuit to perform any one of the implementation manners in any one of the first aspect to fourth aspect.

[0047] Optionally, the transceiver circuit can be a transceiver, or an input / output circuit, or an input / output interface.

[0048] Optionally, the communication apparatus is a terminal device, or a chip for a terminal device, or a network device, or a chip for a network device, or an apparatus cooperating with a terminal device or a network device.

[0049] The seventh aspect of the present application provides a computer program product including computer instructions, which, when running on a computer, causes the computer to perform any one of the implementation manners in any one of the first aspect to fourth aspect.

[0050] The eighth aspect of the present application provides a computer readable storage medium including computer instructions, which, when running on a computer, causes the computer to perform any one of the implementation manners in any one of the first aspect to fourth aspect.

[0051] The ninth aspect of the embodiments of the present application provides a chip device, comprising a processor, which is configured to invoke a computer program or computer instruction in a memory, so that the processor executes any one of the implementation manners in any one of the first aspect to the fourth aspect.

[0052] Optionally, the processor is coupled with the memory through an interface.

[0053] The tenth aspect of the embodiments of the present application provides a communication system, which comprises a first communication device performing the method shown in the first aspect and a second communication device performing the method shown in the second aspect; or the communication system comprises a first communication device performing the method shown in the third aspect and a second communication device performing the method shown in the fourth aspect.

[0054] According to the above technical solution, the method provided by the present application is applied to a first communication device, which comprises 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 communication device and the second communication device. Then, the first communication device monitors a first wake-up signal from 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 is 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 is used for the second module to adjust a sampling rate. The first communication device determines whether to wake up the first module according to the first wake-up signal. This is conducive to improving the time-frequency synchronization performance and / or reducing the power consumption of the first communication device. For example, the first communication device can receive the first synchronization signal at a higher sampling rate to improve the time-frequency synchronization performance. The first communication device can receive the first wake-up signal at a lower sampling rate to reduce the power consumption of the first communication device. For example, the first communication device reduces the sampling rate of the first communication device in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion, and then receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device. The first communication device improves the sampling rate in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion, and receives the first synchronization signal at the improved sampling rate to achieve better time-frequency synchronization. BRIEF DESCRIPTION OF DRAWINGS

[0055] FIG. 1 is a schematic diagram of an open access network (O-RAN or ORAN) system according to an embodiment of the present application;

[0056] FIG. 2 is a structural schematic diagram of an access network device according to an embodiment of the present application;

[0057] FIG. 3 is a schematic diagram of two states of a main receiver and a wake-up receiver of a terminal device according to an embodiment of the present application;

[0058] FIG. 4 is a schematic diagram of a preamble and a low-power wake-up signal monitoring occasion (LP-WUS MO) sent by a network device according to an embodiment of the present application;

[0059] FIG. 5 is a schematic diagram of LP-WUS MOs in multiple transmission directions according to an embodiment of the present application;

[0060] FIG. 6 is a schematic diagram of low-power synchronization signals (LP-SSs) in multiple transmission directions and LP-WUS MOs in multiple transmission directions according to an embodiment of the present application;

[0061] FIG. 7 is a schematic diagram of a low-power wake-up signal occasion (LP-WUS occasion, LO) according to an embodiment of the present application;

[0062] FIG. 8 is a schematic diagram of a network device sending an LP-SS and an LP-WUS according to an embodiment of the present application;

[0063] FIG. 9 is a schematic diagram of an embodiment of a communication method according to an embodiment of the present application;

[0064] FIG. 10 is a schematic diagram of time-domain resources occupied by an LP-SS, time-domain resources occupied by an LO1, and time-domain resources occupied by an LO2 according to an embodiment of the present application;

[0065] FIG. 11 is a schematic diagram of time-domain resources occupied by LP-SSs in multiple transmission directions according to an embodiment of the present application;

[0066] FIG. 12 is a schematic diagram of a preamble monitoring occasion and an LP-WUS MO according to an embodiment of the present application;

[0067] FIG. 13 is another schematic diagram of a preamble monitoring occasion and an LP-WUS MO according to an embodiment of the present application;

[0068] FIG. 14 is yet another schematic diagram of a preamble monitoring occasion and an LP-WUS MO according to an embodiment of the present application;

[0069] FIG. 15 is yet another schematic diagram of a preamble monitoring occasion and an LP-WUS MO according to an embodiment of the present application;

[0070] FIG. 16 is a schematic diagram of time-domain resources occupied by an LP-SS, time-domain resources occupied by an LO1, and time-domain resources occupied by an LO2 according to an embodiment of the present application;

[0071] FIG. 17 is another schematic diagram of a preamble monitoring occasion and an LP-WUS MO according to embodiments of the present application;

[0072] FIG. 18 is another schematic diagram of a preamble monitoring occasion and an LP-WUS MO according to embodiments of the present application;

[0073] FIG. 19 is a schematic diagram of a structure of a communication apparatus according to embodiments of the present application;

[0074] FIG. 20 is another schematic diagram of a structure of a communication apparatus according to embodiments of the present application;

[0075] FIG. 21 is another schematic diagram of a structure of a communication apparatus according to embodiments of the present application;

[0076] FIG. 22 is a schematic diagram of a structure of a terminal device according to embodiments of the present application. DETAILED DESCRIPTION

[0077] Embodiments of the present application provide a communication method and related apparatus, for improving time-frequency synchronization performance and / or reducing power consumption of a first communication apparatus. For example, the first communication apparatus can receive a first synchronization signal at a higher sampling rate, to improve time-frequency synchronization performance. The first communication apparatus can receive a first wake-up signal at a lower sampling rate, to reduce power consumption of the first communication apparatus. For example, the first communication apparatus reduces the sampling rate in a time interval between a first time-domain resource and a second time-domain resource occupied by a first wake-up signal occasion, and receives the first wake-up signal at the reduced sampling rate, to reduce power consumption of the first communication apparatus. For another example, the first communication apparatus increases the sampling rate in a time interval between a first time-domain resource and a second time-domain resource occupied by a first wake-up signal occasion, and receives the first synchronization signal at the increased sampling rate, to achieve better time-frequency synchronization.

[0078] The technical solutions in embodiments of the present application will be described clearly and completely below with reference to the drawings in embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort, fall within the protection scope of the present application.

[0079] Reference within the specification to "one embodiment" or "an embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places within the specification are not necessarily all referring to the same embodiment, however, are meant to signify that "one or more, but not all embodiments" have the feature, structure or characteristic. The terms "including," "comprising," "having," and the like are meant to be inclusive and mean that there can be additional

[0080] In the description of the present application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean 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.

[0081] It can be understood that in the present application, "indication" can include direct indication, indirect indication, display indication, and implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0082] The technical solutions of the present application can be applied to various communication systems. For example, a fifth generation (5G) mobile communication system, a new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a future mobile communication system, a vehicle to everything (V2X) communication system, an Internet of Things communication system, an industrial Internet communication system, or a satellite communication system, etc.

[0083] The communication system to which the present application is applicable includes terminal devices and network devices. The terminal device and the network device are introduced as follows.

[0084] Terminal device, also known as UE, mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premise equipment (CPE), etc. The terminal device is a device including a wireless communication function (providing voice / data connectivity to users). For example, handheld devices with wireless connection function, vehicle-mounted devices, machine type communication (MTC) terminals, etc. At present, the terminal device can include: mobile phone, tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self driving (for example, unmanned aerial vehicle, vehicle), wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, etc. For example, the wireless terminal in self driving can be unmanned aerial vehicle, helicopter, or airplane, etc. For example, the wireless terminal in Internet of Vehicles can be vehicle-mounted device, whole vehicle device, vehicle-mounted module, vehicle, or ship, etc. The wireless terminal in industrial control can be camera, robot, or mechanical arm, etc. The wireless terminal in smart home can be television, air conditioner, sweeping machine, sound box, or set top box, etc. The terminal device can also be a device or module with corresponding communication function accessing the above-mentioned communication system. The terminal device is usually provided with a communication module, circuit or chip for executing corresponding communication function, and is also configured with program instructions for executing corresponding communication function.

[0085] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module or control unit in the above-mentioned device or apparatus, which is not limited in the present application. It should be noted that in the present application, when referring to the terminal device, it can refer to the terminal device itself, or the chip, functional module or integrated circuit in the terminal device for completing the method provided in the present application, which is not limited in the present application.

[0086] A network device is a device deployed in a wireless access network to provide wireless communication functions for terminal devices. The network device can also be referred to as a radio access network (RAN) entity, an access node, a network node, an access network device, or a communication apparatus, etc.

[0087] Specifically, the network device can be an access network device of a 3rd generation partnership project (3GPP) related cellular system. For example, a fourth-generation (4G) mobile communication system, a 5G mobile communication system, or a future mobile communication system. The network device can also be an access network device in an open RAN (O-RAN or ORAN) or a cloud radio access network (CRAN). Alternatively, the network device can also be an access network device in a communication system obtained by fusing two or more of the above communication systems.

[0088] The network device includes, but is not limited to, an evolved Node B (eNB), a home base station (for example, a home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a macro base station, a micro base station, a wireless relay node, a donor node, a wireless controller in a CRAN scenario, a wireless backhaul node, a transmission point (TP), or a transmission reception point (TRP). The network device can also be an access network device in a 5G mobile communication system. For example, a next generation NodeB (gNB) in a new radio (NR) system, a transmission reception point (TRP), a TP, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G mobile communication system. Alternatively, the network device can also be a network node constituting a gNB or a transmission point. For example, a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element. For example, a BBU. The RU can be included in a radio frequency device or a radio frequency unit. For example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). Alternatively, the network device can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, in V2X technology, the network device can be a road side unit (RSU).

[0089] It should be noted that in different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as an open centralized unit (O-CU) or an open CU, the DU can also be referred to as an open distributed unit (O-DU), the centralized unit control plane (CU-CP) can also be referred to as an open centralized unit control plane (O-CU-CP) or an open CU-CP, the centralized unit user plane (CU-UP) can also be referred to as an open centralized unit user plane (O-CU-UP) or an open CU-UP, and the RU can also be referred to as an open radio unit (O-RU). The specific application is not limited. Any one of the CU, CU-CP, CU-UP, DU and RU in the present application can be realized by a software module, a hardware module, or a combination of a software module and a hardware module.

[0090] FIG. 1 is a schematic diagram of an ORAN system according to an embodiment of the present application. The ORAN system includes a core network, an access network device and a UE. Optionally, the ORAN system can also include other components in addition to the components shown in FIG. 1, and the specific application is not limited.

[0091] The access network device can communicate with the core network (CN) through a backhaul link. The access network device can communicate with the UE through an air interface. Specifically, the BBU in the access network device communicates with the core network through the backhaul link. The RU in the access network device communicates with at least one UE through the air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not co-located.

[0092] The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul link.

[0093] In a possible implementation, as shown in FIG. 2, the CU is a logical node carrying radio resource control (RRC), service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer and other control functions of the access network device. The CU can be connected to network nodes such as a core network through some interfaces. For example, an E2 interface. Optionally, the CU can have part of the functions of the core network. The CU (for example, the PDCP layer and / or higher layer of the CU) is connected to the DU (for example, the radio link control (RLC) layer and lower layer of the DU) through some interfaces. For example, an F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (for example, interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is an application protocol of the F1 interface, which defines signaling procedures of the F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0094] Optionally, as shown in FIG. 2, the CU can be split into a CU-CP and a CU-UP, where the CU-CP is a logical node carrying the control plane part of PDCP (PDCP-C) layer of RRC layer and packet data convergence protocol layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an access and mobility management function (AMF) network element in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location update of a terminal device, registration network of the terminal device, handover of the terminal device, etc. The CU-UP is a logical node carrying the user plane part of PDCP (PDCP-U) layer of SDAP layer and packet data convergence protocol layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, such as a user plane function (UPF) network element in a 5G system, is used to be responsible for forwarding and receiving data in a terminal device. The above configuration of the CU and the DU is only an example, and in actual application, the CU and the DU can also be configured to have functions according to needs. For example, the CU or the DU can be configured to have more functions of protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, partial functions of the RLC layer and functions of protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, for example, functions requiring to meet a relatively short delay requirement in processing time are arranged in the DU, and functions not requiring to meet the delay requirement are arranged in the CU.

[0095] In a possible implementation manner, as shown in FIG. 2, the DU is a logical node carrying an RLC layer, a medium access control (MAC) layer, a higher physical (Higher PHY) layer and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.

[0096] In one possible implementation, as shown in FIG. 2, the RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, etc. processing functions. The RU communicates with one or more UEs over a wireless link.

[0097] The DU and the RU can or can not be co-located. The DU and the RU exchange control plane and user plane information over a front-haul link via a lower-layer split-control, user and synchronization (Lower-Layer Split CUS-Plane, LLS-CUS) interface. The LLS-CUS can include a lower-layer split control (LLS-C) interface and a lower-layer split user (LLS-U) interface that provide 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 the RU. The DU and the RU have a lower-layer split management (LLS-M) interface of the front-haul link to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0098] The DU and the RU can cooperate to collectively implement the functionality of the PHY layer. One DU can be connected to one or more RUs. The functionalities that the DU and the RU have can be configured in multiple ways according to design. For example, the DU is configured to implement baseband functionality, and the RU is configured to implement mid- RF functionality. As another example, the DU is configured to implement high-layer functionality in the PHY layer, and the RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in the PHY layer can include a portion of the functionality of the PHY layer that is closer to the MAC layer, and the low-layer functionality in the PHY layer can include another portion of the functionality of the PHY layer that is closer to the mid-RF side.

[0099] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application.

[0100] It should be noted that the network device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module or control unit in the above-mentioned devices or apparatus, and the specific application is not limited. It should be noted that in this application, when referring to the network device, it can refer to the network device itself, or the chip, functional module or integrated circuit in the network device that completes the method provided in this application, and the specific application is not limited.

[0101] In order to reduce the power consumption of the terminal device, the research topic of LP-WUS or low power wakeup radio is introduced in R18 and R19 in NR, and the purpose is to study the power consumption reduction scheme of the terminal device in various RRC states.

[0102] The concept of wakeup radio refers to that when the main module (used for data transmission) is in a sleep state, the terminal device only starts a low power WUR (LP-WUR) to monitor the wakeup data packet. The wakeup data packet is generally carried in the LP-WUS. The main module can also be referred to as a main receiver (MR) or a communication main module, and the specific application is not limited. The main module is the traditional receiver in the terminal device, which is used to receive downlink signaling, downlink signals and downlink data, etc. The wakeup receiver can also be referred to as a wakeup circuit, a communication auxiliary module, or an auxiliary circuit, etc.

[0103] The main module simultaneously includes a medium radio frequency module and a baseband processing module. The wakeup receiver can include a simple receiver composed of a medium radio frequency module; or the wakeup receiver adopts a lower power consumption module (for example, the bandwidth and transmission rate of the LP-WUS are much lower than those of other signals in NR, and a low power consumption module can be used), so that the working power consumption of the wakeup receiver is much lower than that of the main receiver. For example, the working power consumption of the wakeup receiver can be less than one tenth of the average power consumption of the main receiver in the idle state.

[0104] For example, the wake-up receiver can include some radio frequency circuits and baseband circuits with lower power consumption. For example, the wake-up receiver does not include a mixer, or uses a low-power mixer. For example, in the low-power mixer, a low-power ring oscillator is used instead of a phase lock loop (PLL), a low noise amplifier (LNA) with a higher noise figure is used, and the like.

[0105] For another example, the wake-up receiver can also be a sub-module of the main receiver, or multiplex some circuits, devices, and the like with the main receiver. Alternatively, compared with the main receiver, the wake-up receiver includes fewer devices when working. For example, the wake-up receiver does not include a fast Fourier transform module, a channel decoding module, a low density parity check code (LDPC) decoding module, and a polar decoding module. In addition, compared with the main receiver, the wake-up receiver has fewer registers and memory units, and uses a lower bandwidth bus, so its power consumption is lower than that of the main receiver.

[0106] For another example, the main receiver in the low-power working mode can also be considered as a wake-up receiver. For example, when the main receiver reduces the working voltage, turns off some high-power functions, slows down the clock frequency, and / or reduces the sampling rate and bit width of the analog-to-digital sampling, the main receiver can be understood as a wake-up receiver.

[0107] FIG. 3 is a schematic diagram of two states of the main receiver and the wake-up receiver (also referred to as the auxiliary receiver) of the terminal device according to an embodiment of the present application. As shown in FIG. 3:

[0108] State 1: When the main receiver returns to the idle state after completing data transmission and reception, the main receiver can enter a deep sleep state or an ultra-deep sleep state to reduce the power consumption of the terminal device. The auxiliary receiver is in a working state and receives the LP-WUS.

[0109] State 2: Once the auxiliary receiver receives the LP-WUS sent to the terminal device or receives the LP-WUS of the group to which the terminal device belongs, the auxiliary receiver triggers the main receiver to wake up or start working, and the main receiver continues to transmit and receive data or signaling.

[0110] In the LP-WUR system, the LP-SS can be a periodic signal or an aperiodic signal. The LP-SS is used for time-frequency synchronization between the terminal device and the network device. Specifically, after the terminal device performs time-frequency synchronization with the network device through the LP-SS, the terminal device knows the frame, subframe, time slot, symbol, etc. where the LP-WUS is located. The terminal device can determine whether the local clock is offset and whether the operating frequency of the terminal device is offset from the transmission frequency of the LP-WUS. In addition, the LP-SS also includes an identifier of the cell, so as to facilitate the terminal device to determine the cell to which the terminal device accesses.

[0111] The LP-WUS is used to indicate whether a specific terminal device is woken up or whether a group of terminal devices is woken up. The terminal device that is woken up triggers the main receiver of the terminal device to perform corresponding operations. For example, updating system messages, receiving paging messages, initiating random access, receiving disaster warning information, etc. In some candidate designs, since the transmission period of the LP-SS is long (for example, 320 milliseconds), the time interval between the time when the terminal device receives the LP-SS and the time when the terminal device receives the LP-WUS is large, and the local clock and frequency of the terminal device can be offset at the time when the terminal device receives the LP-WUS, resulting in a decline in the reception performance of the LP-WUS. Therefore, as shown in FIG. 4, before transmitting the LP-WUS, the network device can also transmit a preamble, which is used for the terminal device to perform time-frequency synchronization with the network device before receiving the LP-WUS, so as to improve the reception performance of the LP-WUS.

[0112] The working process of the LP-WUS woken-up terminal device is introduced below.

[0113] Step 1: When the terminal device receives the LP-WUS through the wake-up receiver, the main receiver is generally in a low-power state. For example, a deep sleep state or an ultra-deep sleep state.

[0114] Step 2: When the wake-up receiver receives the LP-WUS, the terminal device first needs to process the LP-WUS. For example, demodulating the LP-WUS, if the LP-WUS signal exists coding, decoding and checking the LP-WUS, etc., so as to identify the wake-up information.

[0115] Step 3: If the wake-up information includes the information of waking up the terminal device or the group to which the terminal device belongs, the terminal device sends a wake-up indication to the main receiver through the wake-up receiver to wake up the main receiver.

[0116] Step 4: The main receiver switches from the low-power state to the active state, which mainly includes the following processes:

[0117] 1. The chip, antenna, storage and other peripherals of the main receiver are powered on and started;

[0118] 2. The chip, antenna, storage and other peripherals of the main receiver load the pre-stored configuration parameters from the read only memory (ROM) chip;

[0119] 3. The main receiver searches for the network and determines the serving cell in which the terminal device is located;

[0120] 4. The main receiver further performs fine time-frequency synchronization to determine the time boundary of the serving cell.

[0121] 5. The main receiver receives the paging message when the paging time comes, and performs corresponding operations according to the paging message.

[0122] The transmission occasion of LP-WUS is introduced as follows.

[0123] The transmission occasion of LP-WUS can be referred to as LP-WUS MO. The LP-WUS MO can be understood as a pre-defined or network-configured time-frequency resource. The network device can transmit LP-WUS on the LP-WUS MO, or can not transmit LP-WUS. The LP-WUS MO corresponding to different terminal devices or different groups of terminal devices can be different, which can be distinguished by the transmission period of the LP-WUS MO and the transmission time within the transmission period. The network device can transmit LP-WUS in different transmission directions, so the same LP-WUS can be transmitted on the time-frequency resources corresponding to multiple LP-WUS MOs. The LP-WUS transmitted on each LP-WUS MO has the same content, but the corresponding beam direction is different. As shown in FIG. 5, the terminal device corresponds to four LP-WUS MOs, and the network device transmits LP-WUS on the four LP-WUS MOs through beam 1, beam 2, beam 3 and beam 4 respectively. The LP-WUS transmitted in different beam directions can contain the same content. The above multiple LP-WUS MOs for transmitting the same content to different beam directions can be referred to as an LP-WUS MO group (LP-WUS MO group). Thus, the LP-WUS can cover the entire cell.

[0124] The LP-SS can also correspond to multiple transmission directions. As shown in FIG. 6, the LP-SS corresponds to four transmission directions. The number of beams transmitted by the LP-SS is the same as the number of beams transmitted by the LP-WUS, and the beam directions of the LP-SS are the same as the beam directions of the LP-WUS. The beam direction of the first LP-SS is the same as the beam direction of the LP-WUS transmitted on the first LP-WUS MO, i.e., both are beam 1. The beam direction of the second LP-SS is the same as the beam direction of the LP-WUS transmitted on the second LP-WUS MO, i.e., both are beam 2. The beam direction of the third LP-SS is the same as the beam direction of the LP-WUS transmitted on the third LP-WUS MO, i.e., both are beam 3. The beam direction of the fourth LP-SS is the same as the beam direction of the LP-WUS transmitted on the fourth LP-WUS MO, i.e., both are beam 4. It should be noted that the beam directions of the LP-SS are the same as the beam directions of the LP-WUS, which can be understood as the receiver of the terminal device can use the same spatial RX parameter to receive the LP-SS and the LP-WUS. Therefore, the terminal device can first detect different transmission beams to determine the transmission beam with the best reception quality, and receive the LP-WUS in the transmission beam to obtain the best LP-WUS reception performance.

[0125] The LP-WUS in each LP-WUS MO can carry wake-up information, which is used to indicate whether one terminal device or one terminal device group is woken up. Alternatively, the wake-up information is used to indicate whether multiple terminal devices or multiple terminal device groups are woken up. Multiple LP-WUS MOs can be combined as one low-power wake-up signal occasion (LP-WUS occasion, LO), and one LO can include one or more LP-WUS MOs. As shown in FIG. 7, the LO includes four LP-WUS MOs, and each LP-WUS MO can transmit different wake-up signals to wake up different groups of terminal devices. For the terminal devices in one terminal device group, the wake-up signals can be transmitted in any one of the four LP-WUS MOs.

[0126] The communication system to which the method provided in the present 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 for 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 for implementing part or all of the network device. Of course, the communication system can further include more communication devices, and the more communication devices and the second communication device can perform the technical solutions of the present application.

[0127] Optionally, the first communication device comprises a first module for data transmission and a second module for waking up the first module. The first module can be understood as the aforementioned main receiver. The second module can be understood as the aforementioned wake-up receiver. The names of the first module and the second module are not limited in the present application.

[0128] Currently, the LP-SS and the LP-WUS are generally transmitted on the same frequency with the same bandwidth, so the network device transmits the LP-SS and the LP-WUS in a time-division manner. As shown in FIG. 8, the network device transmits the LP-SS and then transmits the LP-WUS. When receiving the LP-SS, the terminal device is uncertain about the actual transmission time of the LP-SS. Therefore, the terminal device needs to perform continuous sliding detection on the LP-SS within a time window, and then the terminal device determines the actual transmission time of the LP-SS according to the sliding detection result of the LP-SS. The terminal device performs time-frequency synchronization with the network device according to the LP-SS to obtain a synchronization result. The terminal device adjusts the local clock and the operating frequency of the terminal device according to the synchronization result. As can be seen, the process of sliding detection of the terminal device on the LP-SS and time-frequency synchronization through the LP-SS needs a certain processing time.

[0129] To improve the time-frequency synchronization performance, the terminal device expects to receive the LP-SS at a higher sampling rate to improve the time resolution. For example, if the transmission bandwidth of the LP-SS is 3.6 MHz (megahertz), the terminal device can set the sampling rate of the analog-to-digital converter (ADC) of the receiver to 7.68 MHz. After receiving the LP-SS, when the terminal device receives the LP-WUS, the terminal device expects to receive the LP-WUS at a lower sampling rate to reduce the power consumption of the terminal device. For example, the terminal device sets the sampling rate of the analog-to-digital converter to 96 kHz (kilohertz), which is 8 times lower than the sampling rate used when receiving the LP-SS. When receiving the LP-WUS, the power consumption of the terminal device can be greatly reduced. The process of adjusting the sampling rate of the analog-to-digital converter and other devices of the terminal device needs a certain processing time. Therefore, the transmission mode shown in FIG. 8 cannot meet the needs of the terminal device to improve the time-frequency synchronization performance and / or reduce the power consumption. Therefore, how the network device transmits the LP-SS and the LP-WUS to improve the time-frequency synchronization performance and / or reduce the power consumption of the terminal device is a problem worth considering.

[0130] The application provides corresponding technical solutions for improving time-frequency synchronization performance and / or reducing power consumption of the first communication device. For example, the first communication device can receive the first synchronization signal at a higher sampling rate to improve time-frequency synchronization performance. The first communication device can receive the first wake-up signal at a lower sampling rate to reduce power consumption of the first communication device. For example, the first communication device reduces the sampling rate of the first communication device in a time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal occasion, and then receives the first wake-up signal at the reduced sampling rate, thereby reducing the power consumption of the first communication device. For another example, the first communication device increases the sampling rate in a time interval between the first time-domain resource and the second time-domain resource occupied by the first wake-up signal occasion, and then receives the first synchronization signal at the increased sampling rate to achieve better time-frequency synchronization. For details, please refer to the relevant introduction of the embodiments below.

[0131] The technical solutions of the application will be described below in conjunction with specific embodiments.

[0132] FIG. 9 is a schematic diagram of one embodiment of a communication method according to the application. Please refer to FIG. 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. The method shown in FIG. 9 includes:

[0133] 901. The second communication device sends a first synchronization signal to the first communication device on a 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.

[0134] The first synchronization signal is used for time-frequency synchronization between the first communication device and the second communication device.

[0135] Optionally, the first synchronization signal is an SSB, an LP-SS, or a TRS, or other reference signals that can be used for time-frequency synchronization (time frequency tracking), radio resource management measurement (RRM Measurement), radio link management measurement (RLM Measurement), and / or channel estimation.

[0136] For example, as shown in FIG. 10, the LP-SS occupies N time domain symbols, i.e., the first time domain resource includes N time domain symbols, and N is an integer greater than or equal to 1. Optionally, the first synchronization signal is modulated by using an on-off keying (OOK) modulation mode, and the length of the sequence used to generate the first synchronization signal is S OOK symbols, and S is an integer greater than or equal to 1.

[0137] 902、The second communication apparatus sends the first wake-up signal at the first wake-up signal occasion. Correspondingly, the first communication apparatus monitors the first wake-up signal sent by the second communication apparatus at the first wake-up signal occasion through the second module.

[0138] 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 the 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 is used for 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 occasion is also used for the first communication apparatus to perform time-frequency synchronization with the second communication apparatus according to the reference signal.

[0139] In a possible implementation, the first time domain resource is after the second time domain resource, and the time interval between the starting time domain position occupied by the first time domain resource and the ending time domain position occupied by the second time domain resource is not less than the first time length. For example, as shown in FIG. 10, the LP-SS occupies N time domain symbols, i.e., the first time domain resource includes N time domain symbols. The first wake-up signal occasion is LO2, and the time domain resource occupied by LO2 includes P time domain symbols, and P is an integer greater than or equal to 1. That is, the second time domain resource includes P time domain symbols. The first time length includes Y time domain symbols, and Y is an integer greater than or equal to 1. The time interval between the starting time domain position occupied by the LP-SS and the ending time domain position occupied by LO2 is not less than Y time domain symbols.

[0140] In another possible implementation, the first time domain resource is before the second time domain resource, and the time interval between the ending time domain position occupied by the first time domain resource and the starting time domain position occupied by the second time domain resource is not less than the first time length. For example, as shown in FIG. 10, the LP-SS occupies N time domain symbols, i.e., the first time domain resource includes N time domain symbols. The first wake-up signal occasion is LO1, and the time domain resource occupied by LO1 includes M time domain symbols, and M is an integer greater than or equal to 1. That is, the second time domain resource includes M time domain symbols. The first time length includes X time domain symbols, and X is an integer greater than or equal to 1. The time interval between the ending time domain position occupied by the LP-SS and the starting time domain resource occupied by LO1 is equal to X time domain symbols.

[0141] It should be noted that the above is an example of the length of the first time length in time domain symbols. In actual application, the unit of the first time length can also be other units. For example, time slot, sub-time slot, millisecond, or second, etc. The specific application is not limited.

[0142] Optionally, the length of the first time length can be determined according to the processing time required for 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 an example, the second module can achieve different sampling rates by adjusting the programmable frequency divider of the analog-to-digital converter clock. Optionally, the length of the first time length can also be determined according to the processing time required for the first communication device to perform time-frequency synchronization. For example, the first time domain resource is before the second time domain resource, and 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 according to 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 occasion. Therefore, the length of the first time length is related to the processing time required for the first communication device to perform time-frequency synchronization.

[0143] It should be noted that the sampling rate can be understood as the signal sampling rate of the second module for receiving the signal. Specifically, the second module can adjust the sampling rate of the analog-to-digital converter in the second module. Optionally, the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion is used for the second module to reduce or increase the sampling rate. For example, the first time domain resource is after the second time domain resource, that is, the second module receives the first wake-up signal first, and then receives the first synchronization signal. The second module can receive the first wake-up signal at a lower sampling rate, thereby reducing the power consumption of the first communication device. The second module can increase the sampling rate within the time interval between the second time domain resource and the first time domain resource, and receive the first synchronization signal through the increased sampling rate. In an example, the second module can reduce the multiple of the frequency divider, use a higher frequency clock signal as the clock of the analog-to-digital converter, thereby increasing the sampling rate of the analog-to-digital converter. Thus, the accuracy of time-frequency synchronization is improved. For another example, the first time domain resource is before the second time domain resource, that is, the second module receives the first synchronization signal first, and then receives the first synchronization signal. The second module can receive the first synchronization signal at a higher sampling rate, thereby improving the accuracy of time-frequency synchronization. The second module can reduce the sampling rate within the time interval between the second time domain resource and the first time domain resource, and receive the first wake-up signal through the reduced sampling rate. In an example, the second module can increase the multiple of the frequency divider, use a higher frequency clock signal as the clock of the analog-to-digital converter, thereby reducing the sampling rate of the analog-to-digital converter. Since the sampling rate is reduced, the amount of signal processing operation of the first communication device in the digital domain is greatly reduced, and the power consumption of the analog-to-digital converter itself is also reduced, thereby reducing the power consumption of the first communication device.

[0144] Optionally, the second communication device does not send a signal in a time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion. For example, the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal occasion includes X time domain symbols, and the X time domain symbols are gap symbols.

[0145] Optionally, the reference signal corresponds to multiple transmission directions, a first synchronization signal transmitted in a first transmission direction of the multiple transmission directions occupies a time interval between a starting time domain position and an ending time domain position of the second time domain resource, and the time interval is not less than the first time length; or an ending time domain position occupied by a first synchronization signal transmitted in a last transmission direction of the multiple transmission directions and a starting time domain position of the second time domain resource occupy a time interval, and the time interval is not less than the first time length. 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 the multiple transmission directions. For example, as shown in FIG. 11, the first synchronization signal corresponds to four transmission directions, which are beam 1, beam 2, beam 3, and beam 4. The first wake-up signal occasion is LO1, and it can be known that a time interval between an ending time domain position in time domain resources (that is, J time domain symbols) occupied by the first synchronization signal transmitted by the second communication device on the beam 4 and a starting time domain position in time domain resources (that is, M time domain symbols) occupied by LO1 is not less than X time domain symbols. For another example, the first synchronization signal corresponds to four transmission directions, which are beam 1, beam 2, beam 3, and beam 4. The first wake-up signal occasion is LO2, and it can be known that a time interval between a starting time domain position of time domain resources (that is, H time domain symbols) occupied by the first synchronization signal transmitted by the second communication device on the beam 1 and an ending time domain position of time domain resources (that is, P time domain symbols) occupied by LO2 is not less than Y time domain symbols.

[0146] In a possible implementation, 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. 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. The second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block. The second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in the same data block means that time-frequency resources occupied by the second synchronization signal and 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 time-frequency resources occupied by the first wake-up signal are pre-agreed by a network device and a terminal device or configured by the network device for the terminal device. The sampling rate is described above.

[0147] Optionally, the second synchronization signal is a preamble.

[0148] In this implementation, the time domain resource occupied by the first synchronization signal is far away from the time domain resource occupied by the second monitoring occasion, so the first communication apparatus needs to perform time-frequency synchronization again. The first communication apparatus can receive the second synchronization signal from the second communication apparatus on the first monitoring occasion. In order to improve the time-frequency synchronization performance, the first communication apparatus can receive the second synchronization signal from the second communication apparatus on the first monitoring occasion with a higher sampling rate. In order to reduce the power consumption of the first communication apparatus, the first communication apparatus can adjust the sampling rate in 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. For example, the first communication apparatus reduces the sampling rate. Then, the first communication apparatus monitors the first wake-up signal on the second monitoring occasion with the reduced sampling rate. For example, as shown in FIG. 11, the first wake-up signal occasion is LO1 as shown in FIG. 11. As shown in FIG. 12, the first monitoring occasion is the preamble monitoring occasion as shown in FIG. 12, and the second monitoring occasion is the LP-WUS MO as shown in FIG. 12. The time interval between the time domain resource occupied by the preamble monitoring occasion and the time domain resource occupied by the low-power wake-up signal monitoring occasion is not less than D time domain symbols. D is an integer greater than or equal to 1. The second module monitors the preamble on the preamble monitoring occasion, and when the preamble is monitored, the second module can perform time-frequency synchronization with the second communication apparatus through the preamble. Then, the second module monitors the first wake-up signal on the low-power wake-up signal monitoring occasion.

[0149] It should be noted that the above examples introduce the length of the third time length in units of time domain symbols. In actual application, the unit of the third time length can also be other units, for example, time slot, sub-time slot, millisecond, second, etc., which are not limited in the present application.

[0150] Optionally, the third time length can be determined according to the processing time required for the second module to adjust the sampling rate.

[0151] It should be noted that, optionally, the first wake-up signal occasion can also include more first monitoring occasions and second monitoring occasions, which are not limited in the present application.

[0152] The above describes a scheme in which the time interval between the first monitoring occasion and the second monitoring occasion is not less than the first time length. In actual application, some monitoring occasions can be arranged between the first monitoring occasion and the second monitoring occasion. For example, the time interval between the first monitoring occasion and the second monitoring occasion can be an integer multiple of the sum of the lengths of the preamble monitoring occasion and the LP-WUS MO. In this way, resource waste can be avoided. For example, as shown in FIG. 13, the first monitoring occasion is the preamble monitoring occasion 1, and the second monitoring occasion is the LP-WUS MO 2. The preamble monitoring occasion 1 and the LP-WUS MO 2 are separated by the LP-WUS MO 1 and the preamble monitoring occasion 2. The preamble monitoring occasion 2 is used to monitor a preamble, and the preamble is used to monitor the communication device of the LP-WUS MO 3 to perform time-frequency synchronization.

[0153] In another possible implementation, the first wake-up signal occasion includes a third monitoring occasion and a plurality of fourth monitoring occasions. The third monitoring occasion is used to monitor a third synchronization signal, and 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 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 the sampling rate. The third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a same data block. In other words, the third synchronization signal is used for the communication device monitoring the plurality of fourth monitoring occasions to perform time-frequency synchronization with the second communication device. The third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a 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 by the network device and the terminal device, or are configured by the network device for the terminal device, which is not limited in the present application.

[0154] Optionally, the third synchronization signal is a preamble.

[0155] For the first communication device, in one possible implementation, when the first communication device monitors the first wake-up signal in one of the plurality of fourth monitoring occasions, the first communication device does not need to continue to monitor the first wake-up signal in the fourth monitoring occasion after the fourth monitoring occasion. In another possible implementation, the first communication device monitors the first wake-up signal in the plurality of fourth monitoring occasions, thereby obtaining the wake-up information for the first communication device.

[0156] In the implementation, the time-domain resources occupied by the first synchronization signal and the time-domain resources occupied by the plurality of fourth monitoring occasions are far apart, and therefore the first communication apparatus needs to perform time-frequency synchronization again. The first communication apparatus can receive a third synchronization signal from the second communication apparatus on a third monitoring occasion. The first communication apparatus can receive the third synchronization signal from the second communication apparatus on the third monitoring occasion at a higher sampling rate. In this way, the time-frequency synchronization performance is improved. In order to reduce the power consumption of the first communication apparatus, the first communication apparatus can adjust the sampling rate in 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. For example, the first communication apparatus reduces the sampling rate. Then, the first communication apparatus monitors the first wake-up signal on the plurality of fourth monitoring occasions at the reduced sampling rate. For example, as shown in FIG. 11, the first wake-up signal occasion is LO1 shown in FIG. 11. As shown in FIG. 14, the third monitoring occasion is the preamble monitoring occasion shown in FIG. 14, and the plurality of fourth monitoring occasions include LP-WUS MO1, LP-WUS MO2, LP-WUS MO3, and LP-WUS MO4 shown in FIG. 14. The time interval between the time-domain resources occupied by the preamble monitoring occasion and the time-domain resources occupied by the plurality of fourth monitoring occasions is not less than D time-domain symbols. D is an integer greater than or equal to 1. The second module monitors a preamble on the preamble monitoring occasion. When the preamble is monitored, the second module can perform time-frequency synchronization with the second communication apparatus through the preamble. The second module reduces the sampling rate in the time interval between the time-domain resources occupied by the preamble monitoring occasion and the time-domain resources occupied by the plurality of fourth monitoring occasions. Then, the second module monitors the first wake-up signal on the plurality of fourth monitoring occasions.

[0157] It should be noted that the above examples introduce the length of the fourth time length in units of time-domain symbols. In actual applications, the unit of the fourth time length can also be other units, for example, time slots, sub-slots, milliseconds, seconds, etc., and the specific application is not limited.

[0158] Optionally, the fourth time length can be determined according to the processing time required for the second module to adjust the sampling rate.

[0159] Optionally, the third synchronization signal corresponds to multiple transmission directions, and the first wake-up signal in each of the multiple fourth monitoring occasions corresponds to the multiple transmission directions. Optionally, the third synchronization signal is a preamble. For example, the third synchronization signal corresponds to two transmission directions, which are beam 1 and beam 2 respectively. The first wake-up signal in each of the fourth monitoring occasions corresponds to two transmission directions, which are beam 1 and beam 2 respectively. As shown in FIG. 15, the second communication device sends a preamble 1 through a preamble monitoring occasion in beam 1, and the second communication device sends a preamble 2 through a preamble monitoring occasion in beam 2. The LP-WUS MO1 and the LP-WUS MO3 both correspond to beam 1, and the LP-WUS MO2 and the LP-WUS MO4 both correspond to beam 2. The preamble 1 can be used for the communication device monitoring the LP-WUS MO1 and the LP-WUS MO3 to perform time-frequency synchronization with the second communication device. The preamble 2 can be used for the communication device monitoring the LP-WUS MO2 and the LP-WUS MO4 to perform time-frequency synchronization with the second communication device. The LP-WUS MO1 and the LP-WUS MO2 can be understood as one LP-WUS MO group, and the LP-WUS MO3 and the LP-WUS MO4 can be understood as another LP-WUS MO group.

[0160] 903. The first communication device determines whether to wake up the first module according to the first wake-up signal.

[0161] Specifically, the first communication device determines whether the first wake-up signal contains the wake-up information of the first communication device. If yes, the first communication device wakes up the first module. The specific wake-up process can be referred to the related description in the foregoing. If no, the first communication device does not perform the operation of waking up the first module.

[0162] Optionally, the embodiment shown in FIG. 9 further includes steps 904 to 905.

[0163] 904. The second communication device sends a second wake-up signal to the first communication device at a second wake-up signal occasion. Correspondingly, the first communication device receives the second wake-up signal from the second communication device at the second wake-up signal occasion.

[0164] 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 the second time length. 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.

[0165] In a possible implementation, the first time domain resource is before the second time domain resource and after the third 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. 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 third time domain resource is not less than the second time length. For example, as shown in FIG. 10, the LP-SS occupies N time domain symbols, that is, the first time domain resource includes N time domain symbols. The first wake-up signal occasion is LO1, and the time domain resource occupied by LO1 includes 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 time length includes X time domain symbols, where X is an integer greater than or equal to 1. A time interval between an ending time domain position occupied by the LP-SS and a starting time domain position occupied by LO1 is not less than X time domain symbols. The second wake-up signal occasion is LO2, and the time domain resource occupied by LO2 includes P time domain symbols, where P is an integer greater than or equal to 1. That is, the third time domain resource includes P time domain symbols. The second time length includes Y time domain symbols, where Y is an integer greater than or equal to 1. A time interval between a starting time domain position occupied by the LP-SS and an ending time domain position occupied by LO2 is not less than Y time domain symbols. Optionally, P=M.

[0166] In another possible implementation, the first time domain resource is before the third time domain resource and 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. 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 third time domain resource is not less than the second time length. For example, as shown in FIG. 10, the LP-SS occupies N time domain symbols, that is, the first time domain resource includes N time domain symbols. The second wake-up signal occasion is LO2, and the time domain resource occupied by LO2 includes 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 time length includes Y time domain symbols, where Y is an integer greater than or equal to 1. A time interval between a starting time domain position occupied by the LP-SS and an ending time domain position occupied by LO2 is not less than Y time domain symbols. The first wake-up signal occasion is LO1, and the time domain resource occupied by LO1 includes M time domain symbols, where M is an integer greater than or equal to 1. That is, the third time domain resource includes M time domain symbols. The second time length includes X time domain symbols, where X is an integer greater than or equal to 1. A time interval between an ending time domain position occupied by the LP-SS and a starting time domain position occupied by LO1 is not less than X time domain symbols.

[0167] It should be noted that the second time length is similar to the first time length, and details can be referred to the foregoing description of the first time length, which will not be described herein again.

[0168] 905、The first communication apparatus determines whether to wake up the first module according to the second wake-up signal.

[0169] Step 905 is similar to the aforementioned step 903, and details can be referred to the related description of the aforementioned step 903, which will not be repeated here.

[0170] It should be noted that the execution sequence between step 904 and step 905 and step 902 and step 903 is determined by the first wake-up signal timing and the second wake-up signal timing. For example, the first wake-up signal timing is before the second wake-up signal timing, and then step 902 and step 903 are executed before step 904 and step 905. For another example, the first wake-up signal timing is after the second wake-up signal timing, and then step 902 and step 903 are executed after step 904 and step 905.

[0171] The method provided by the application is applied to a first communication apparatus, and the first communication apparatus includes a first module for data transmission and a second module for waking up the first module. The first communication apparatus receives a first synchronization signal from a second communication apparatus on a first time domain resource. The first synchronization signal is used for time-frequency synchronization between the first communication apparatus and the second communication apparatus. Then, the first communication apparatus monitors a first wake-up signal from the second communication apparatus on 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 time length. 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 the sampling rate. The first communication apparatus determines whether to wake up the first module according to the first wake-up signal. This is conducive to improving the time-frequency synchronization performance and / or reducing the power consumption of the first communication apparatus. For example, the first communication apparatus can use a higher sampling rate to receive the first synchronization signal to improve the time-frequency synchronization performance. And the first communication apparatus can use a lower sampling rate to receive the first wake-up signal to reduce the power consumption of the first communication apparatus. For example, the first communication apparatus reduces the sampling rate of the first communication apparatus in 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 receives the first wake-up signal through the reduced sampling rate, thereby reducing the power consumption of the first communication apparatus. The first communication apparatus improves the sampling rate in the time interval between the first time domain resource and the second time domain resource occupied by the first wake-up signal timing, and receives the first synchronization signal through the improved sampling rate to achieve better time-frequency synchronization.

[0172] The application further provides another embodiment similar to the embodiment shown in FIG. 9, and the difference is described as follows: in the embodiment, the first synchronization signal in step 901 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 second communication device. The first sequence part is carried in a first part of time domain resources in the first time domain resources. The second sequence part is carried in a second part of time domain resources in the first time domain resources, the first part of time domain resources and the second part of time domain resources are continuous in the time domain, and the second part of time domain resources is used for the second module to adjust the sampling rate.

[0173] Optionally, the symbols in the second sequence part are copies of the first R symbols in the first sequence part, or are copies of the last R symbols in the first sequence part. R is an integer greater than or equal to 1. For example, as shown in FIG. 16, the symbols in the second sequence part are copies of the last R symbols in the first sequence part. Here, the symbol refers to a modulated symbol in the first sequence. The first sequence includes one or more modulated symbols.

[0174] It should be noted that the length of time occupied by the second part of time domain resources in the time domain is similar to the first length in step 901 in the embodiment shown in FIG. 9, and the relevant description is referred to the foregoing description. The relevant description of the second module adjusting the sampling rate is referred to the relevant description in the embodiment shown in FIG. 9.

[0175] In the embodiment, in step 902, in one possible implementation, the ending time domain position of the second time domain resource is continuous with the starting time domain position of the second part of time domain resources. In another possible implementation, the starting time domain position of the second time domain resource is continuous with the ending time domain position of the second part of time domain resources. For example, as shown in FIG. 16, the first sequence part occupies N time domain symbols shown in FIG. 16, that is, the first part of time domain resources includes the N time domain symbols occupied by the first sequence part shown in FIG. 16. The second sequence part occupies Y time domain symbols shown in FIG. 16, that is, the second part of time domain resources includes the Y time domain symbols occupied by the second sequence part shown in FIG. 16. The first wake-up signal occasion is LO2, and the ending time domain symbol occupied by LO2 is continuous with the last time domain symbol occupied by the second sequence part.

[0176] Optionally, 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. The second synchronization signal is generated according to a second sequence. The second sequence comprises a third sequence part and a fourth sequence part. The third sequence part is used for time-frequency synchronization between the first communication device and the second communication device. The third sequence part is carried in a part of time domain resources occupied by the first monitoring occasion. The fourth sequence part is carried in another part of time domain resources occupied by the first monitoring occasion. The other part of time domain resources occupied by the first monitoring occasion is used for adjusting a sampling rate by the second module. The part of time domain resources occupied by the first monitoring occasion and the other part of time domain resources occupied by the first monitoring occasion are continuous in time domain. The second synchronization signal and the first wake-up signal in the second monitoring occasion are carried in a same data block. For the sampling rate, please refer to the relevant description in the foregoing. The other part of time domain resources occupied by the first monitoring occasion occupies a time length in time domain similar to the third time length in the embodiment shown in FIG. 9. For the third time length, please refer to the relevant description in the embodiment shown in FIG. 9.

[0177] In this implementation, the time domain resources occupied by the first synchronization signal and the time domain resources occupied by the second monitoring occasion are far apart, so 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 on the first monitoring occasion. In order to improve the time-frequency synchronization performance, the first communication device can receive the second synchronization signal from the second communication device on a part of time domain resources occupied by the first monitoring occasion using a higher sampling rate. In order to reduce the power consumption of the first communication device, the first communication device can adjust the sampling rate on another part of time domain resources occupied by the first monitoring occasion. For example, the first communication device reduces the sampling rate. Then, the first communication device monitors the first wake-up signal on the second monitoring occasion using the reduced sampling rate. For example, the first wake-up signal occasion is LO1 as shown in FIG. 16. As shown in FIG. 17, the first monitoring occasion is the preamble monitoring occasion as shown in FIG. 17, and the second monitoring occasion is the LP-WUS MO as shown in FIG. 17. The third sequence part occupies the first C time domain symbols of the preamble monitoring occasion, and C is an integer greater than or equal to 1. The fourth sequence part occupies the last D time domain symbols of the preamble monitoring occasion. D is an integer greater than or equal to 1. The second module monitors the preamble on the first C time domain symbols of the preamble monitoring occasion. When the preamble is monitored, the second module can perform time-frequency synchronization with the second communication device through the preamble. The second module can reduce the sampling rate on the last D time domain symbols of the preamble monitoring occasion. Then the second module monitors the first wake-up signal on the low-power wake-up signal monitoring occasion through the reduced sampling rate.

[0178] Optionally, the symbols in the fourth sequence part are copies of the first D symbols of the third sequence part. Here, the symbol refers to a modulated symbol. For example, as shown in FIG. 17, the symbols in the fourth sequence part are copies of the first D symbols of the third sequence part. The second sequence includes one or more modulated symbols.

[0179] It should be noted that, optionally, the first wake-up signal occasion can further include more first monitoring occasions and second monitoring occasions, which are not limited in the present application.

[0180] In another possible implementation, the first wake-up signal occasion includes a third monitoring occasion and a plurality of fourth monitoring occasions. The third monitoring occasion is used for monitoring a third synchronization signal. The third synchronization signal is generated according to a third sequence. The third sequence includes a fifth sequence part and a sixth sequence part. The fifth sequence part is used for time-frequency synchronization between a communication device monitoring the plurality of fourth monitoring occasions and a second communication device. The fifth sequence part is carried in a part of time domain resources occupied by the third monitoring occasion, and the sixth sequence part is carried in another part of time domain resources occupied by the third monitoring occasion. The other part of time domain resources occupied by the third monitoring occasion is used for adjusting a sampling rate of the communication device monitoring the first wake-up signal in the plurality of fourth monitoring occasions. The part of time domain resources occupied by the third monitoring occasion is continuous with the other part of time domain resources occupied by the third monitoring occasion. The third synchronization signal and the first wake-up signal in the plurality of fourth monitoring occasions are located in a 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 plurality of fourth monitoring occasions and the second communication device.

[0181] For the first communication device, in one possible implementation, when the first communication device monitors the first wake-up signal in one of the plurality of fourth monitoring occasions, the first communication device does not need to continue monitoring the first wake-up signal in the fourth monitoring occasion after the one of the plurality of fourth monitoring occasions. In another possible implementation, the first communication device monitors the first wake-up signal in the plurality of fourth monitoring occasions, thereby obtaining the wake-up information for the first communication device.

[0182] In the implementation, the time domain resources occupied by the first synchronization signal are far apart from the time domain resources occupied by the plurality of fourth monitoring occasions. Therefore, the first communication apparatus needs to perform time-frequency synchronization again. The first communication apparatus can receive the fifth sequence part from the second communication apparatus on a part of the time domain resources occupied by the third monitoring occasion at a higher sampling rate. Thus, the time-frequency synchronization performance of the first communication apparatus is improved. The first communication apparatus can adjust the sampling rate on another part of the time domain resources occupied by the third monitoring occasion. For example, the first communication apparatus reduces the sampling rate. The first communication apparatus monitors the first wake-up signal on the plurality of fourth monitoring occasions at the reduced sampling rate. For example, as shown in FIG. 11, the first wake-up signal occasion is LO1 shown in FIG. 11. As shown in FIG. 18, the third monitoring occasion is the preamble monitoring occasion shown in FIG. 18, and the plurality of fourth monitoring occasions include LP-WUS MO1, LP-WUS MO2, LP-WUS MO3, and LP-WUS MO4 shown in FIG. 18. The fifth sequence part is carried on the time domain symbols other than the last D time domain symbols occupied by the preamble monitoring occasion. The sixth sequence part is carried on the last D time domain symbols occupied by the preamble monitoring occasion. The second module receives the fifth sequence part on the time domain symbols other than the last D time domain symbols occupied by the preamble monitoring occasion and performs time-frequency synchronization with the second communication apparatus through the fifth sequence part. Then, the second module reduces the sampling rate on the last D time domain symbols occupied by the preamble monitoring occasion. The second module monitors the first wake-up signal on the plurality of fourth monitoring occasions at the reduced sampling rate.

[0183] Optionally, as shown in FIG. 18, the symbols in the sixth sequence part are the first D symbols of the fifth sequence part. Here, the symbol refers to a modulation symbol. The third sequence includes one or more modulation symbols.

[0184] It should be noted that the length of time occupied by the other part of the time domain resources occupied by the third monitoring occasion in the time domain is similar to the third length in the foregoing embodiment shown in FIG. 9. For details, refer to the related introduction of the third length in the foregoing embodiment shown in FIG. 9.

[0185] In the embodiment, optionally, the first sequence further includes a seventh sequence part, and the seventh sequence part is carried on a third part of the time domain resources in the first time domain resources, and the third part of the time domain resources is continuous with the first part of the time domain resources in the time domain.

[0186] In this embodiment, in step 902, if the first part of time domain resources is after the second part of time domain resources, the second time domain resource is before the second part of time domain resources and continuous with the second part of time domain resources in the time domain, the third time domain resource is after the third part of time domain resources and continuous with the third part of time domain resources in the time domain; or, if the first part of time domain resources is before the second part of time domain resources, the second time domain resource is after the second part of time domain resources and continuous with the second part of time domain resources in the time domain, the third time domain resource is before the third part of time domain resources and continuous with the third part of time domain resources in the time domain. For example, as shown in FIG. 16, the first sequence part occupies N time domain symbols shown in FIG. 16, that is, the first part of time domain resources includes N time domain symbols occupied by the first sequence part shown in FIG. 16. The second sequence part occupies Y time domain symbols shown in FIG. 16, that is, the second part of time domain resources includes Y time domain symbols occupied by the second sequence part shown in FIG. 16. The first wake-up signal occasion is LO2, and the ending time domain symbol occupied by LO2 is continuous with the last time domain symbol occupied by the second sequence part. The seventh sequence part occupies X time domain symbols shown in FIG. 16, that is, the third part of time domain resources includes X time domain symbols shown in FIG. 16. The starting time domain position of the third part of time domain resources is continuous with the ending time domain position of the first part of time domain resources. The second wake-up signal occasion is LO1, and the ending time domain position of the third part of time domain resources is continuous with the starting time domain position of the time domain resource occupied by LO1.

[0187] A structure diagram of a communication apparatus according to an embodiment of the present application is shown below. Please refer to FIG. 19. The communication apparatus is used to execute the process executed by the first communication apparatus in the embodiment shown in FIG. 9. For details, please refer to the related description in the foregoing method embodiments.

[0188] The communication apparatus 1900 includes a transceiver module 1901 and a processing module 1902.

[0189] The processing module 1902 is used for data processing. The transceiver module 1901 can realize corresponding communication functions. The transceiver module 1901 can also be called a communication interface or a communication module.

[0190] Optionally, the communication apparatus 1900 can further include a storage module, which can be used to store program codes, program instructions and / or data. The processing module 1902 can read the instructions and / or data in the storage module, so that the communication apparatus 1900 realizes the foregoing method embodiments.

[0191] Optionally, the transceiver module 1901 can include a sending module and a receiving module. The sending module is used to execute the sending operations in the foregoing method embodiments. The receiving module is used to execute the receiving operations in the foregoing method embodiments.

[0192] It should be noted that the communication apparatus 1900 can include the sending module but not the receiving module. Alternatively, the communication apparatus 1900 can include the receiving module but not the sending module. Whether the sending module and the receiving module are included in the communication apparatus 1900 can depend on whether the communication apparatus 1900 performs the sending action and the receiving action in the above solutions.

[0193] The communication apparatus 1900 can be configured to perform the actions of the first communication apparatus in the embodiments shown in FIG. 9. For example, the communication apparatus 1900 can be the communication module of the first communication apparatus, or the circuit or chip responsible for the communication function in the first communication apparatus. The communication apparatus 1900 can be the first communication apparatus or a component configured in the first communication apparatus. The processing module 1902 is configured to perform operations related to processing of the first communication apparatus in the embodiments shown in FIG. 9. The transceiver module 1901 is configured to perform operations related to transceiving of the first communication apparatus in the embodiments shown in FIG. 9.

[0194] For example, the communication apparatus 1900 is configured to perform the following solution.

[0195] The communication apparatus 1900 includes a first module for data transmission and a second module for waking up the first module.

[0196] The transceiver module 1901 is configured to receive, by the second module, a first synchronization signal from the second communication apparatus on a first time domain resource, where the first synchronization signal is used for time-frequency synchronization between the communication apparatus 1900 and the second communication apparatus; and monitor, by the second module, a first wake-up signal from the second communication apparatus on a first wake-up signal occasion, where a time interval between the first time domain resource and a second time domain resource 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 resource occupied by the first wake-up signal occasion is used for the second module to adjust a sampling rate. The processing module 1902 is configured to determine whether to wake up the first module according to the first wake-up signal.

[0197] For another example, the communication apparatus 1900 is configured to perform the following solution.

[0198] The communication apparatus 1900 includes a first module for data transmission and a second module for waking up the first module.

[0199] The transceiver module 1901 is configured to receive, by the second module, a first synchronization signal from the second communication apparatus on the first time domain resource, where 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 communication apparatus 1900 and the second communication apparatus, the first sequence part is carried in a first part of the first time domain resource, the second sequence part is carried in a second part of the first time domain resource, the first part of the first time domain resource is continuous with the second part of the first time domain resource in the time domain, and the second part of the first time domain resource is used for the second module to adjust a sampling rate; and monitor, by the second module, a first wake-up signal from the second communication apparatus on a second time domain resource occupied by the first wake-up signal occasion, where the first part of the first time domain resource is after the second part of the first time domain resource, the second time domain resource is before the second part of the first time domain resource and is continuous with the second part of the first time domain resource in the time domain; or the first part of the first time domain resource is before the second part of the first time domain resource, the second time domain resource is after the second part of the first time domain resource and is continuous with the second part of the first time domain resource in the time domain.

[0200] For other implementations, refer to the related description of the embodiment shown in FIG. 9.

[0201] It should be understood that the specific processes in which the modules perform the above corresponding processes have been described in detail in the method embodiments, and are not described here for the sake of brevity.

[0202] A structural schematic diagram of a communication apparatus according to an embodiment of the present application is shown below. Please refer to FIG. 20. The communication apparatus is configured to perform the processes performed by the second communication apparatus in the embodiment shown in FIG. 9, and can refer to the related description in the method embodiments.

[0203] The communication apparatus 2000 includes a transceiver module 2001. Optionally, the communication apparatus 2000 further includes a processing module 2002.

[0204] The processing module 2002 is configured to perform data processing. The transceiver module 2001 can realize corresponding communication functions. The transceiver module 2001 can also be referred to as a communication interface or a communication module.

[0205] Optionally, the communication apparatus 2000 can further include a storage module, which can be configured to store program codes, program instructions and / or data. The processing module 2002 can read the instructions and / or data in the storage module, so that the communication apparatus 2000 implements the foregoing method embodiments.

[0206] Optionally, the transceiver module 2001 can include a sending module and a receiving module. The sending module is configured to perform the sending operations in the method embodiments. The receiving module is configured to perform the receiving operations in the method embodiments.

[0207] It should be noted that the communication apparatus 2000 can include the sending module and not include the receiving module. Alternatively, the communication apparatus 2000 can include the receiving module and not include the sending module. Whether the sending module and the receiving module are included can depend on whether the communication apparatus 2000 performs the sending action and the receiving action in the above solutions.

[0208] The communication apparatus 2000 can be configured to perform the actions of the second communication apparatus in the embodiments shown in FIG. 9. For example, a communication module of the second communication apparatus, or a circuit or chip responsible for communication functions in the second communication apparatus. The communication apparatus 2000 can be the second communication apparatus or a component configured in the second communication apparatus. The processing module 2002 is configured to perform operations related to processing of the second communication apparatus in the embodiments shown in FIG. 9. The transceiver module 2001 is configured to perform operations related to transceiving of the second communication apparatus in the embodiments shown in FIG. 9.

[0209] For example, the communication apparatus 2000 is configured to perform the following solution.

[0210] The transceiver module 2001 is configured to send, to the first communication apparatus, a first synchronization signal on a first time domain resource, the first synchronization signal being used for time-frequency synchronization between the first communication apparatus and the communication apparatus 2000; and send, to the first communication apparatus, a first wake-up signal 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 being used for the first communication apparatus to adjust a sampling rate.

[0211] For another example, the communication apparatus 2000 is configured to perform the following solution.

[0212] The transceiver module 2001 is configured to send, to the first communication apparatus, a first synchronization signal on a first time domain resource; wherein the first synchronization signal is generated according to a first sequence, the first sequence including a first sequence part and a second sequence part, the first sequence part being used for time-frequency synchronization between the first communication apparatus and the communication apparatus 2000, the first sequence part being carried in a first part time domain resource in the first time domain resource, the second sequence part being carried in a second part time domain resource in the first time domain resource, the first part time domain resource being continuous with the second part time domain resource in the time domain, the second part time domain resource being used for the second module to adjust a sampling rate; and send, to the first communication apparatus, a first wake-up signal on a second time domain resource occupied by a first wake-up signal occasion, wherein the first part time domain resource is after the second part time domain resource, the second time domain resource is before the second part time domain resource and continuous with the second part time domain resource in the time domain; or the first part time domain resource is before the second part time domain resource, the second time domain resource is after the second part time domain resource and continuous with the second part time domain resource in the time domain.

[0213] For other implementation manners, please refer to the related description of the embodiment shown in FIG. 9, which will not be repeated here.

[0214] It should be understood that the specific processes of each module performing the corresponding processes described above have been described in detail in the method embodiments described above, and for the sake of brevity, will not be repeated here.

[0215] Embodiments of the present application also provide a communication device 2100. Please refer to FIG. 21, the communication device 2100 comprises a processing circuit. The processing circuit can be one or more processors 2110 or all or part of the circuit in the processor 2110 for processing or control. The processor 2110 is coupled with the memory 2120, and the memory 2120 is used to store computer programs or instructions and / or data, and the processor 2110 is used to execute the computer programs or instructions and / or data stored in the memory 2120, so that the method in the above method embodiment is executed. The communication device 2100 is used to realize the operation performed by the first communication device or the second communication device in the above method embodiment.

[0216] Optionally, the processor 2110 included in the communication device 2100 is one or more.

[0217] Optionally, as shown in FIG. 21, the communication device 2100 can also include the memory 2120.

[0218] Optionally, the memory 2120 included in the communication device 2100 can be one or more.

[0219] Optionally, the memory 2120 can be integrated with the processor 2110 or separately arranged.

[0220] Optionally, as shown in FIG. 21, the communication device 2100 can also include the transceiver circuit. The transceiver circuit can be the transceiver 2130 or the input and output circuit or the input and output interface. The transceiver circuit is used for receiving and / or sending signals. For example, the processor 2110 is used to control the transceiver 2130 to receive and / or send signals.

[0221] For example, when the communication device 2100 is the first communication device or the second communication device described above, the processing circuit described above can be one or more processors 2110, or all or part of the circuit in the processor 2110 for processing or control, and the transceiver circuit described above can be the transceiver 2130.

[0222] For example, when the communication device 2100 is a chip, such as a system on chip (SOC) or a baseband chip, for the aforementioned terminal device or access network device, the aforementioned processing circuitry can be one or more processors 2110, or all or part of circuitry in the one or more processors 2110 for processing or control, and the aforementioned transceiver can be an input / output circuit.

[0223] A possible structural diagram of a terminal device is shown in FIG. 22.

[0224] FIG. 22 shows a simplified structural diagram of a terminal device. For ease of understanding and illustration, in FIG. 22, the terminal device is taken as an example of a mobile phone. As shown in FIG. 22, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input / output device.

[0225] The processor is mainly used for processing communication protocols and communication data, controlling the terminal device, executing software programs, processing data of the software programs, and the like.

[0226] The memory is mainly used for storing software programs and data.

[0227] The radio frequency circuit is mainly used for conversion between a baseband signal and a radio frequency signal and processing of the radio frequency signal.

[0228] The antenna is mainly used for transceiving a radio frequency signal in the form of an electromagnetic wave.

[0229] The input / output device, such as a touch screen, a display screen, a keyboard, and the like, is mainly used for receiving data input by a user and outputting data to the user.

[0230] It should be noted that some types of terminal devices can not have an input / output device.

[0231] When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and transmits a radio frequency signal through the antenna in the form of an electromagnetic wave. When data is sent to the terminal device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0232] For ease of illustration, only one memory and one processor are shown in FIG. 22. In an actual terminal device product, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, and the like. The memory can be arranged independently of the processor, or can be integrated with the processor. The embodiments of the present application do not limit this.

[0233] In the embodiments of the present application, the antenna and the radio frequency circuit with the transceiving function can be regarded as a transceiving module of the terminal device, and the processor with the processing function can be regarded as a processing module of the terminal device. As shown in FIG. 22, the terminal device includes a transceiving module 2210 and a processing module 2220. The transceiving module can also be referred to as a transceiver, a transceiver device, etc. The processing module can also be referred to as a processor, a processing board, a processing module, a processing device, etc.

[0234] Optionally, the devices for implementing the receiving function in the transceiving module 2210 can be regarded as a receiving module, and the devices for implementing the sending function in the transceiving module 2210 can be regarded as a sending module, that is, the transceiving module 2210 includes the receiving module and the sending module. The transceiving module can also be referred to as a transceiver, a transceiver circuit, etc. The receiving module can also be referred to as a receiver, a receiving circuit, etc. The sending module can also be referred to as a transmitter, a transmitting circuit, etc.

[0235] It should be understood that the transceiving module 2210 is configured to perform the sending operation and the receiving operation of the first communication device in the method embodiments, and the processing module 2220 is configured to perform other operations of the first communication device in the method embodiments except the transceiving operation.

[0236] When the terminal device is a chip, the chip includes the transceiving module and the processing module. The transceiving module can be an input / output circuit or a communication interface, and the processing module is a processor or a microprocessor integrated on the chip or an integrated circuit or a logic circuit.

[0237] The embodiments of the present application also provide a communication system including the first communication device and the second communication device in the embodiment shown in FIG. 9.

[0238] The embodiments of the present application also provide a chip device including a processor configured to invoke computer degrees or computer instructions stored in a memory, so that the processor performs the method in the embodiment shown in FIG. 9.

[0239] In a possible implementation, an input of the chip device corresponds to the receiving operation in the embodiment shown in FIG. 9, and an output of the chip device corresponds to the sending operation in the embodiment shown in FIG. 9.

[0240] Optionally, the processor is coupled with the memory through an interface, or the processor is integrated with the memory.

[0241] Optionally, the chip device further includes a memory in which computer degrees or computer instructions are stored.

[0242] The processor mentioned in any of the above can be a general central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the method of the embodiment shown in Fig. 9. The memory mentioned in any of the above can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), and the like.

[0243] The embodiment of the present application further provides a computer program product comprising computer instructions, which, when executed on a computer, cause the computer to perform the method of the embodiment shown in Fig. 9.

[0244] The embodiment of the present application further provides a computer readable storage medium comprising computer instructions, which, when executed on a computer, cause the computer to perform the method of the embodiment shown in Fig. 9.

[0245] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic, and the division of the units is merely a logical function division, and there can be another division manner in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0246] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0247] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be in the form of hardware implementation, or in the form of software functional unit.

[0248] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or in other words the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

[0249] The above-described embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features thereof can be replaced by equivalents; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present 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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