Communication method and communication device

Abstract

The invention provides a communication method and a communication device applied to the technical field of wireless communication. In the technical scheme provided by the invention, the terminal can determine the first time domain position of the first synchronization signal based on the first transmission quantity issued by the network equipment and / or the first symbol index of the first synchronization signal, so that a low-power-consumption receiver in the terminal can receive the first synchronization signal; and the synchronization of the low-power-consumption receiver is realized through the received first synchronization signal, so that the synchronization performance of the low-power-consumption receiver for receiving the low-power-consumption wake-up signal (LP-WUS) is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, and in particular to a communication method and a communication device. BACKGROUND

[0002] In the release 18 (R18) of the 3rd generation partnership project (3GPP), a low power wake up signal (LP-WUS) is introduced to support the low power mechanism of a terminal in the R18. For example, the terminal can use a low power wake up receiver (LP-WUR) to listen to the LP-WUS, and wake up a main receiver to perform a paging procedure, or a random access procedure, or implement the reception and transmission of data after receiving the LP-WUS, so as to achieve the purpose of energy saving.

[0003] However, after the introduction of the LP-WUS, how to realize the reception synchronization of the LP-WUS becomes a problem to be solved urgently. SUMMARY

[0004] The present application provides a communication method and a communication device, which are applied to the field of communication technology, in particular the field of wireless communication technology. In the technical solution provided by the present application, the reception synchronization of a low power wake up signal (LP-WUS) can be realized by determining a first time domain position of a first synchronization signal.

[0005] In a first aspect, the present application provides a communication method, which is applied to a terminal, and the method comprises: receiving first information, the first information indicating a first transmission quantity and / or a first symbol index of a first synchronization signal, the first transmission quantity being a transmission quantity of the first synchronization signal within a first time length, and the first synchronization signal being a synchronization signal received by a low power receiver of the terminal; and determining a first time domain position of the first synchronization signal based on the first information.

[0006] As an example, the method can be executed by a terminal, can be executed by a chip system, a hardware circuit and / or a software module applied in the terminal, or can be executed by other devices capable of realizing the functions of the terminal, and the present application does not make any limitation in this regard.

[0007] As an example, the terminal can include a main receiver and a low-power receiver. The low-power receiver can be a low-power wake up receiver (LP-WUR). Wherein, the device for implementing the function of the main receiver can be the main receiver itself, or a device (such as a chip system) capable of supporting the main receiver to implement its function, which can be installed in the main receiver or independently arranged, and the main receiver can implement its function by invoking the device, and the present application does not make specific limitation. Correspondingly, the device for implementing the function of the low-power receiver can be the low-power receiver itself, or a device (such as a chip system) capable of supporting the low-power receiver to implement its function, which can be installed in the low-power receiver or independently arranged, and the low-power receiver can implement its function by invoking the device, and the present application does not make specific limitation.

[0008] Wherein, receiving the first information can be that the terminal receives the first information, or that a chip system, hardware circuit and / or software module applied in the terminal receives the first information, or that the main receiver in the terminal receives the first information, or that the low-power receiver in the terminal receives the first information. Correspondingly, determining the first time domain position of the first synchronization signal based on the first information can be performed by the terminal, or by a chip system, hardware circuit and / or software module applied in the terminal, or by the main receiver, or by the low-power receiver.

[0009] As an example, the first transmission quantity can also be understood as the number of beams used to transmit the first synchronization signal.

[0010] As an example, the first time length can be understood as the monitoring time length of the first synchronization signal.

[0011] As an example, the first time length can be one system frame, or the first time length can be one half frame, or the first time length can be represented by other time domain units, such as time slot, micro time slot, symbol, subframe, second, millisecond, etc.

[0012] In some embodiments, the first transmission quantity can also be understood as the number of first synchronization signals contained in a first synchronization signal burst set. The first synchronization signal burst set can be any first synchronization signal burst set, which is not limited in the present application. At this time, the first time length can be the time domain resource occupied by a first synchronization signal burst set.

[0013] In the embodiments of the present application, the monitoring can be replaced by receiving, blind detection, detection, or demodulation, etc. The present application does not make limitation.

[0014] As an example, the first symbol index of the first synchronization signal can be a starting symbol index value of the first synchronization signal. The starting symbol index value of the first synchronization signal can be understood as an index value of a first symbol of symbols occupied by the first synchronization signal in the time domain. It should be understood that when the number of the first synchronization signals is multiple, the first symbol index can include the symbol index of each of the first synchronization signals.

[0015] As an example, the first synchronization signal can be a synchronization signal designed for a low-power receiver alone, such as a low power synchronous signal (LP-SS), or a synchronization signal / physical broadcast channel block (SSB).

[0016] In this technical solution, the terminal can determine the first time domain position of the first synchronization signal through the received first transmission quantity and / or the first symbol index of the first synchronization signal, so that the terminal can receive the first synchronization signal at the determined first time domain position, and implement synchronization of the low-power receiver through the received first synchronization signal, thereby improving the synchronization performance of the low-power receiver in receiving other signals (such as a low power wake up signal (LP-WUS)).

[0017] In combination with the first aspect, in some implementations of the first aspect, the method further includes: receiving second information, the second information indicating the first time domain position; and determining the first time domain position of the first synchronization signal based on the first information includes: determining the first time domain position based on the first information and the second information.

[0018] As an example, when the number of the first synchronization signals is multiple, the second information can include indication information of the time domain position of the first synchronization signal of the first transmission in the first synchronization signals, so that the terminal can determine the first time domain position of the first synchronization signals based on the first information and the second information, thereby improving the accuracy of the terminal in determining the first time domain position.

[0019] In some embodiments, when the number of the first synchronization signals is multiple, the first synchronization signals can be included in a first synchronization signal burst set. The second information can include indication information of the time domain position of the first synchronization signal of the first transmission in the first synchronization signal burst set.

[0020] As an example, the second information can be delivered in the same message as the first information, or can be delivered through different messages, which is not limited in the present application.

[0021] As an example, receiving the second information can be that the terminal receives the second information, can be that a chip system, a hardware circuit and / or a software module applied in the terminal receives the second information, can be that a main receiver in the terminal receives the second information, or can be that a low-power receiver in the terminal receives the second information, and the present application does not limit this. Correspondingly, determining the first time domain position of the first synchronization signal based on the first information and the second information can be performed by the terminal, can be performed by a chip system, a hardware circuit and / or a software module applied in the terminal, can be performed by the main receiver, or can be performed by the low-power receiver.

[0022] It should be noted that in some implementations, when the number of first synchronization signals is multiple, the network device can directly indicate all time domain positions of the first synchronization signals, so that the terminal can not need to receive the first information and the second information, but directly receive the first synchronization signals at the time domain positions issued by the network device, thereby improving the communication efficiency and improving the performance of the terminal.

[0023] In combination with the first aspect, in some implementations of the first aspect, when the subcarrier spacing of the first synchronization signal and a synchronization signal block (SSB) is the same, and the operating frequency point of the first synchronization signal and the operating frequency point of the SSB belong to the same frequency range, the first symbol index is related to at least one of the following information: the second symbol index of the SSB, the operating frequency point of the first synchronization signal, the operating frequency point of the SSB, the number of resources occupied by the first synchronization signal in the time domain, or the number of resources occupied by the SSB in the time domain.

[0024] As an example, when the subcarrier spacing (SCS) of the first synchronization signal and the SSB is the same, and the operating frequency point of the first synchronization signal and the operating frequency point of the SSB belong to the same frequency range, it can be considered that the first synchronization signal and the SSB are of the same type (case). Wherein, the first synchronization signal is associated with the SSB, or the first synchronization signal and the SSB are synchronization signals under the same cell, or the first synchronization signal and the SSB are associated with the same cell.

[0025] As an example, in the same case, if the operating frequency points of the first synchronization signal and the second synchronization signal are different, the first synchronization signal can multiplex the time domain position of the SSB with the same index, and the time domain position of the SSB can be determined by the second symbol index and the number of resources occupied by the SSB in the time domain. The second symbol index can be understood as the starting symbol index of the SSB, and the starting symbol index of the SSB is the index of the first symbol of the symbols occupied by the SSB in the time domain. Among them, the same symbol index can be understood as the index of the first synchronization signal in the first synchronization signal burst set being the same as the index of the SSB in the SSB burst set, or the index of the beam used to transmit the first synchronization signal being the same as the index of the beam used to transmit the SSB.

[0026] For example, when one first synchronization signal occupies 2 symbols in the time domain and one SSB occupies 4 symbols in the time domain, the two symbols occupied by the first synchronization signal can multiplex the first two symbols of the 4 symbols occupied by the SSB with the same index in the time domain; or can multiplex the last two symbols of the 4 symbols occupied by the SSB with the same index in the time domain; or can multiplex the middle two symbols of the 4 symbols occupied by the SSB with the same index in the time domain. For another example, when one first synchronization signal occupies 3 symbols in the time domain and one SSB occupies 4 symbols in the time domain, the three symbols occupied by the first synchronization signal can multiplex the first three symbols of the 4 symbols occupied by the SSB with the same index in the time domain; or can multiplex the last three symbols of the 4 symbols occupied by the SSB with the same index in the time domain. Therefore, in the same case, the time domain position of the first synchronization signal when multiplexing the time domain position of the SSB with the same index is also related to the number of symbols occupied by the first synchronization signal in the time domain.

[0027] As an example, in the same case, if the operating frequency points of the first synchronization signal and the second synchronization signal are the same, the first synchronization signal cannot multiplex the time domain position of the SSB with the same index. At this time, the symbols occupied by the first synchronization signal in the time domain can only use the symbols not occupied by the SSB, or in other words, the symbols occupied by the first synchronization signal in the time domain can be mapped to the time domain position without SSB transmission.

[0028] As an example, the operating frequency point can be understood as the center frequency point, the absolute radio frequency channel number, the frequency number, the operating frequency range, or the offset from the common physical resource block, and the present application does not limit this.

[0029] In this implementation, the terminal can determine the first symbol index of the first synchronization signal based on the at least one piece of information, and further determine the first time domain position of the first synchronization signal. The manner of determining the first symbol index based on the at least one piece of information can be predefined by a protocol, or can be configured by a network device or a core network, and the present application does not limit this.

[0030] With reference to the first aspect, in some implementations of the first aspect, the first time domain position is located in a first half frame of a system frame, or the first time domain position is located in a second half frame of the system frame.

[0031] In some implementations, the first time domain position can be located in a first half period of a transmission period of the first synchronization signal, or located in a second half period of the transmission period of the first synchronization signal. The transmission period of the first synchronization signal can also be replaced by a monitoring period of the first synchronization signal.

[0032] In some implementations, the first time domain position can be located in N system frames in the communication bandwidth, where N can be an odd number or an even number.

[0033] With reference to the first aspect, in some implementations of the first aspect, the first transmission quantity is related to the first time domain position and / or a group in which the terminal is located.

[0034] As an example, the terminals can be grouped, and different first transmission quantities can be configured for the terminals in different groups. For example, the terminals in a cell can be divided into two groups, the first transmission quantity configured for the terminals in a first group can be 4 or 8, and the first transmission quantity configured for the terminals in a second group can be 2. The specific implementation of grouping the terminals is not limited in the present application. The group in which the terminal is located can include at least one terminal.

[0035] As an example, the first time domain position and the first transmission quantity can be different. For example, when the first time domain position is located in a first time window, the first transmission quantity can be 4 or 8; when the first time domain position is located in a second time window, the first transmission quantity can be 2. The first time window and the second time window can be predefined by a protocol or configured by a network device, which is not described herein. The first time window and the second time window can be a running time window of a timer.

[0036] In this implementation, since the first synchronization signal and the LP-WUS are signals introduced to meet the low power consumption characteristics of the terminal, the network needs additional resources to transmit the first synchronization signal and / or the LP-WUS. Therefore, different numbers of first synchronization signals can be configured for terminals according to different groups in which the terminals are located and / or different first time domain positions, which can reduce the resources occupied by the first synchronization signal and the LP-WUS, so as to achieve the effect of energy saving of the terminal and saving of network resources, under the condition that the synchronization of the low power consumption receiver can be realized, and the reception synchronization of the LP-WUS is realized.

[0037] In a possible implementation of the first aspect, when the first synchronization signal and the SSB have the same subcarrier spacing, and the operating frequency point of the first synchronization signal and the operating frequency point of the SSB belong to the same frequency range, the first transmission quantity is less than or equal to a second transmission quantity, and the second transmission quantity is the transmission quantity of the SSB in the first time length.

[0038] For example, in the same case, the first transmission quantity can be less than the second transmission quantity, so that the terminal can save energy and save network resources in the case of realizing the synchronization of the low-power receiver and the reception synchronization of the LP-WUS.

[0039] In a possible implementation of the first aspect, the method further includes: when a first condition is met, sending third information, the third information indicating to update the first transmission quantity and / or the index value of the first synchronization signal; the first condition includes one or more of the following: a first channel quality measurement result measured by the low-power receiver is less than or equal to a first threshold, and a second channel quality measurement result measured by a main receiver of the terminal is greater than the first threshold; or the low-power receiver does not receive a low-power signal in a second time length, and the second channel quality measurement result is greater than the first threshold.

[0040] For example, the index value of the first synchronization signal can be understood as the index of the first synchronization signal in a first synchronization signal burst set. When each first synchronization signal in the first synchronization signal burst set is transmitted by a different beam, updating the index value of the first synchronization signal means updating the index of the beam transmitting the first synchronization signal, that is, updating the direction of the beam transmitting the first synchronization signal, so that the channel quality of the first synchronization signal can be adjusted, and the performance of the terminal is improved. Updating the transmission quantity of the first synchronization signal can also be understood as updating the number of beams transmitting the first synchronization signal, which can improve the network coverage and improve the channel quality of the low-power receiver.

[0041] For example, the low-power signal can be an LP-WUS.

[0042] For example, the low-power signal can be a low-power downlink signal sent by the network device to the terminal. For example, a low-power downlink control signal, a low-power downlink control signaling, a low-power downlink data signal, a low-power synchronization signal, a low-power reference signal, etc.

[0043] The low-power downlink control signal can be carried in a physical downlink control channel (PDCCH), and the low-power downlink data signal can be carried in a physical downlink shared channel (PDSCH). Therefore, the low-power signal can be a low-power PDCCH or a low-power PDSCH.

[0044] It should be noted that the first channel quality measurement result and the second channel quality measurement result are both channel quality measurement results of the low-power receiver, or can be channel quality measurement results of the same frequency point, or can be channel quality measurement results of the same cell.

[0045] In this implementation, if the number of the first transmission quantity decreases and the number of the beams transmitting the first synchronization signal decreases, the network coverage can become poor or the channel quality of the low-power receiver can weaken, so that it is difficult for the terminal to enter the low-power mode to achieve the energy saving effect. Therefore, the terminal can send third information to the network device when the first condition is met, and the third information indicates updating the transmission quantity of the first synchronization signal and / or the index value of the first synchronization signal, so as to improve the network performance of the terminal and reduce the difficulty of the terminal entering the low-power mode. The third information can be sent by the terminal, a chip system, hardware circuit and / or software module applied in the terminal, or a main receiver in the terminal.

[0046] In combination with the first aspect, in some implementations of the first aspect, the method further includes receiving fourth information, the fourth information indicating sending the first synchronization signal.

[0047] In this implementation, the terminal can determine the first time domain position of the first synchronization signal after receiving the fourth information, so as to reduce the power consumption of the terminal and improve the resource utilization.

[0048] As an example, the fourth information can be received by the terminal, a chip system, hardware circuit and / or software module applied in the terminal, a main receiver, or a low-power receiver, and the present application does not limit this.

[0049] In combination with the first aspect, in some implementations of the first aspect, the method further includes sending fifth information, the fifth information indicating whether to support not sending the first synchronization signal.

[0050] In the implementation, when the first synchronization signal is an LP-SS, the terminal can send fifth information to the network device, and the fifth information can indicate whether the low-power receiver in the terminal supports not sending an LP-SS. If the fifth information indicates that the terminal supports not sending an LP-SS, it means that the low-power receiver has the capability of receiving an SSB, and in this case, the network device can not send an LP-SS to save network resource overhead. It should be noted that the capability of the low-power receiver to receive an SSB does not mean that the low-power receiver cannot receive an LP-SS, and in this case, the network device can still send an LP-SS. If the fifth information indicates that the terminal does not support not sending an LP-SS, it means that the low-power receiver can only synchronize the low-power receiver through an LP-SS and does not have the capability of receiving an SSB, and in this case, the network device needs to send an LP-SS.

[0051] In some implementations, the fifth information can include the type of the low-power receiver. For example, when the low-power receiver is a simple receiver, it means that the terminal does not support not sending an LP-SS, or in other words, the low-power receiver does not have the capability of receiving an SSB. For another example, when the low-power receiver is a receiver with signal processing function, it means that the terminal supports not sending an LP-SS.

[0052] In the implementation, the terminal can send the fifth information to the network device, so that the network device can determine whether to send an SSB or an LP-SS based on the fifth information and network resource occupation, thereby improving network performance.

[0053] As an example, the fifth information can be sent by the terminal, or by a chip system, hardware circuit, and / or software module applied in the terminal, or by the main receiver, and the present application does not limit this.

[0054] In combination with the first aspect, in some implementations of the first aspect, the method further includes: receiving, by the low-power receiver of the terminal, the first synchronization signal at the first time domain location.

[0055] In the implementation, after determining the first time domain location, the low-power receiver can receive the first synchronization signal at the first time domain location and synchronize the low-power receiver through the received first synchronization signal, thereby improving the synchronization performance of the low-power receiver in receiving an LP-WUS.

[0056] In a second aspect, the present application provides a communication method, which is applied to a terminal, the terminal comprising a low-power receiver, and the method comprises: activating the low-power receiver in a third time window, and not activating the low-power receiver in a fourth time window, wherein the third time window and the fourth time window are related to at least one of the following: a first time domain position of a first synchronization signal, or a group to which the terminal belongs.

[0057] As an example, the method can be performed by a terminal, or can be performed by a chip system, a hardware circuit and / or a software module applied in the terminal, or can be performed by other devices capable of realizing the functions of the terminal, and the present application does not make any limitation in this regard.

[0058] As an example, the device for realizing the function of the low-power receiver can be the low-power receiver itself, or can be a device (such as a chip system) capable of supporting the low-power receiver to realize its function, which can be installed in the low-power receiver or independently arranged, and the low-power receiver can realize its function by invoking the device, and the present application does not make any specific limitation in this regard.

[0059] As an example, the low-power receiver can be an LP-WUR.

[0060] In the technical solution, the third time window can be understood as the working duration of the low-power receiver, and the fourth time window can be understood as the sleep duration of the low-power receiver. The third time window and the fourth time window are related to the first time domain position of the first synchronization signal and / or the group to which the terminal belongs. The present application does not make any limitation on the specific implementation of the grouping of the terminal. The group to which the terminal belongs can comprise at least one terminal. The activation of the low-power receiver can also be referred to as the enabling of the low-power receiver, the turning on of the low-power receiver, the entering of the low-power mode, or the turning on of the low-power mode, and the present application does not make any limitation in this regard. The non-activation of the low-power receiver can also be referred to as the non-enabling of the low-power receiver, the turning off of the low-power receiver, the exiting of the low-power mode, or the turning off of the low-power mode, and the present application does not make any limitation in this regard.

[0061] In combination with the second aspect, in some implementation manners of the second aspect, the third time window and the fourth time window are configured by any one of the following: signaling, a signal, or a channel.

[0062] In the implementation manner, the third time window can be predefined by a protocol, or can be configured by a network device or a core network, and the present application does not make any limitation in this regard. Correspondingly, the fourth time window can be predefined by a protocol, or can be configured by a network device or a core network, and the present application does not make any limitation in this regard.

[0063] As an example, when the network device or the core network configures the third time window and / or the fourth time window, the configuration can be performed by any one of the following: signaling, a signal, or a channel, and the present application does not make any specific limitation in this regard.

[0064] With reference to the second aspect, in some implementations of the second aspect, a length and / or a starting time of the third time window and the fourth time window are not fixed.

[0065] In this implementation, the length of the third time window and / or the starting time of the third time window is variable, which can be set according to actual network requirements. Correspondingly, the length of the fourth time window and / or the starting time of the fourth time window is variable, which can be set according to actual network requirements.

[0066] In a third aspect, the present application provides a communication method, which is applied to a terminal, and the method comprises: determining a monitoring occasion of a low-power signal according to at least one of the following information: a transmission number of the low-power signal, an index of the low-power signal, a repetition transmission number of the low-power signal, or an identifier carried in the low-power signal; and receiving the low-power signal at the monitoring occasion.

[0067] As an example, the method can be performed by a terminal, or can be performed by a chip system, a hardware circuit and / or a software module applied in the terminal, or can be performed by other devices capable of realizing the functions of the terminal, and the present application does not make any limitation in this regard.

[0068] As an example, the terminal can include a main receiver and a low-power receiver. The low-power receiver can be an LP-WUR. The device used to realize the functions of the main receiver can be the main receiver itself, or a device (such as a chip system) capable of supporting the main receiver to realize its functions, which can be installed in the main receiver or independently arranged, and the main receiver can realize its functions by calling the device, and the present application does not make any specific limitation in this regard. Correspondingly, the device used to realize the functions of the low-power receiver can be the low-power receiver itself, or a device (such as a chip system) capable of supporting the low-power receiver to realize its functions, which can be installed in the low-power receiver or independently arranged, and the low-power receiver can realize its functions by calling the device, and the present application does not make any specific limitation in this regard.

[0069] The determination of the monitoring occasion of the low-power signal can be performed by the terminal, or can be performed by a chip system, a hardware circuit and / or a software module applied in the terminal, or can be performed by the main receiver in the terminal, or can be performed by the low-power receiver in the terminal. Correspondingly, the low-power receiver of the terminal can receive the low-power signal at the determined monitoring occasion.

[0070] As an example, the low-power signal can be an LP-WUS.

[0071] The number of transmissions of the low-power signal can be the number of transmissions of the low-power signal in a third time length, or can be the number of beams transmitting the low-power signal in the third time length. The third time length can be a monitoring time length of the low-power signal, or can be a monitoring time window of the low-power signal. The monitoring time window of the low-power signal can include one or more monitoring occasions (MOs). The terminal can monitor the low-power signal in each monitoring occasion, and the number of transmissions of the low-power signal can be related to the number of monitoring occasions in the monitoring time window. In some embodiments, the number of transmissions of the low-power signal is the same as the number of monitoring occasions in the monitoring time window of the low-power signal.

[0072] The index of the low-power signal can be an index value in a burst of the low-power signal.

[0073] The beam can correspond to the low-power signal one-to-one, that is, one beam can transmit the low-power signal corresponding to the beam. The low-power signal can be repeatedly transmitted, that is, the low-power signal can be transmitted one or more times by the beam corresponding to the low-power signal.

[0074] The identification carried in the low-power signal can be an identification of different granularities such as a subgroup identification, a group identification, or a terminal identification, which is not limited herein.

[0075] In the technical solution, after the terminal determines the index of the low-power signal to be received based on the channel quality measurement result of the downlink synchronization signal, the terminal can further determine a monitoring occasion of the low-power signal with the index in a monitoring time window of the low-power signal, so as to realize the reception of the low-power signal. For example, the terminal can determine the monitoring occasion of the low-power signal based on at least one of the following information: the number of transmissions of the low-power signal, the index of the low-power signal, the number of repeated transmissions of the low-power signal, or the identification carried in the low-power signal.

[0076] In a possible implementation manner, if there are N different low-power signals, each low-power signal in the N low-power signals is not repeatedly transmitted, and the identification carried by each low-power signal is the same, the monitoring time window of the low-power signal can include N monitoring occasions. The low-power signals are different, which can be understood as that the indexes of the low-power signals are different, or the beams transmitting the low-power signals are different. N is a positive integer.

[0077] In the implementation, the low-power consumption signal with the index M can correspond to the Mth monitoring occasion. In the implementation, the low-power consumption signal with the index M can correspond to the (M+1)th monitoring occasion. In the implementation, the content of the low-power consumption signal monitored by the terminal is the same.

[0078] In a possible implementation, if there are N different low-power consumption signals, the number of repeated transmissions of each low-power consumption signal in the N low-power consumption signals is Q, and the identification carried by each low-power consumption signal is the same, the monitoring time window of the low-power consumption signal can include N*(Q+1) monitoring occasions. The low-power consumption signals are different, which can be understood as that the indexes of the low-power consumption signals are different or that the beams for transmitting the low-power consumption signals are different. N and Q are positive integers.

[0079] In the implementation, the low-power consumption signal with the index M can correspond to the (P*N+M)th monitoring occasion or can correspond to the ((M-1)*(Q+1)+P+1)th monitoring occasion. In the implementation, the low-power consumption signal with the index M can correspond to the (P*N+(M+1))th monitoring occasion or can correspond to the (M*(Q+1)+P+1)th monitoring occasion. P is a positive integer greater than or equal to 0. In the implementation, the content of the low-power consumption signal monitored by the terminal is the same.

[0080] In a possible implementation, if there are S types of low-power consumption signals, each type of low-power consumption signal includes N different low-power consumption signals, and each low-power consumption signal in the N low-power consumption signals is not repeatedly transmitted, the monitoring time window of the low-power consumption signal can include (S*N) monitoring occasions. In the implementation, the low-power consumption signals can be classified according to the identification carried in the low-power consumption signals, that is, the identification carried in the low-power consumption signals belonging to the same type is the same, or the content of the low-power consumption signals belonging to the same type is the same. The low-power consumption signals are different, which can be understood as that the indexes of the low-power consumption signals are different or that the beams for transmitting the low-power consumption signals are different. N and S are positive integers.

[0081] When the index M of the low-power signal is a positive integer, i.e., M = 1, 2, …, N, the low-power signal with the index M in the Kth type of low-power signal can correspond to the ((K-1)*N+M)th monitoring occasion, or can correspond to the ((M-1)*S+K)th monitoring occasion. When the index M of the low-power signal is an integer greater than or equal to 0, i.e., M = 0, 1, …, N-1, the low-power signal with the index M in the Kth type of low-power signal can correspond to the ((K-1)*N+(M+1))th monitoring occasion, or can correspond to the (M*S+K)th monitoring occasion. K is a positive integer.

[0082] In a possible implementation, if there are S types of low-power signals, each type of low-power signal contains N different low-power signals, and each low-power signal in the N low-power signals is repeatedly transmitted Q times, the monitoring time window of the low-power signal can contain (S*N*(Q+1)) monitoring occasions. In this implementation, the low-power signals can be classified according to the identification carried in the low-power signals, that is, the identification carried in the low-power signals belonging to the same type is the same, or the content of the low-power signals belonging to the same type is the same. The low-power signals are different, which can be understood as that the indexes of the low-power signals are different, or the beams for transmitting the low-power signals are different. N, S, and Q are positive integers.

[0083] When the index M of the low-power signal is a positive integer, i.e., M = 1, 2, …, N, the low-power signal with the index M in the Kth type of low-power signal can correspond to the ((K-1)*N*(Q+1)+P*N+M)th monitoring occasion, or can correspond to the ((K-1)*N*(Q+1)+(M-1)*(Q+1)+P+1)th monitoring occasion, or can correspond to the (P*S*N+(K-1)*N+M)th monitoring occasion. When the index M of the low-power signal is an integer greater than or equal to 0, i.e., M = 0, 1, …, N-1, the low-power signal with the index M in the Kth type of low-power signal can correspond to the ((K-1)*N*(Q+1)+P*N+(M+1))th monitoring occasion, or can correspond to the ((K-1)*N*(Q+1)+M*(Q+1)+P+1)th monitoring occasion, or can correspond to the (P*S*N+(K-1)*N+(M+1))th monitoring occasion. P is a positive integer greater than or equal to 0. K is a positive integer.

[0084] It should be noted that in each of the above implementations, the number of repeated transmissions of the low-power signal is the difference between the total number of transmissions of the low-power signal and 1. For example, when the total number of transmissions of the low-power signal is 2, the low-power signal is considered to be repeated once. That is, the low-power signal transmitted for the first time can be considered as the low-power signal transmitted for the 0th time, and the low-power signal transmitted for the second time can be considered as the low-power signal transmitted for the 1st time.

[0085] In some embodiments, the number of repeated transmissions of the low-power signal can be the total number of transmissions of the low-power signal. For example, when the total number of transmissions of the low-power signal is 2, the low-power signal is considered to be repeated twice. That is, the low-power signal transmitted for the first time can be considered as the low-power signal transmitted for the 1st time, and the low-power signal transmitted for the second time can be considered as the low-power signal transmitted for the 2nd time. In this example, P in each of the above formulas can be replaced by (P-1), and Q can be replaced by (Q-1), as described above, when the first index of the low-power signal in each of the above implementations is changed from 1 to 0, M in the formula is replaced by (M+1).

[0086] In a fourth aspect, the present application provides a communication method, which is applied to a network device, and the method comprises: transmitting first information, wherein the first information indicates a first transmission number and / or a first symbol index of a first synchronization signal, the first transmission number is a transmission number of the first synchronization signal within a first time length, and the first synchronization signal is a synchronization signal received by a low-power receiver of a terminal.

[0087] As an example, the method can be performed by a network device, can be performed by a chip system, hardware circuit and / or software module applied in the network device, or can be performed by other apparatuses capable of realizing the functions of the network device, and the present application does not limit this.

[0088] As an example, the first transmission number can also be understood as the number of beams used to transmit the first synchronization signal.

[0089] As an example, the first time length can be understood as a monitoring time length of the first synchronization signal.

[0090] As an example, the first time length can be one system frame, or the first time length can be one half frame, or the first time length can be represented by other time domain units, such as time domain units of time slots, micro time slots, symbols, subframes, seconds, milliseconds, etc.

[0091] In some embodiments, the first quantity of transmissions can also be understood as a quantity of first synchronization signals included in a first synchronization signal burst set. The first synchronization signal burst set can be any one of the first synchronization signal burst sets, which are not limited in the present application. At this time, the first time length can be a time domain resource occupied by a first synchronization signal burst set.

[0092] As an example, the first symbol index of the first synchronization signal can be a starting symbol index value of the first synchronization signal. The starting symbol index value of the first synchronization signal can be understood as an index value of the first symbol in the symbols occupied by the first synchronization signal in the time domain. It should be understood that when the quantity of first synchronization signals is multiple, the first symbol index can include the first symbol index of each of the first synchronization signals.

[0093] As an example, the first synchronization signal can be a synchronization signal designed for low-power receivers alone, such as an LP-SS, or an SSB.

[0094] In the technical solution, the network device can indicate the first time domain position of the first synchronization signal by sending the first information, so that the terminal can determine the first time domain position based on the first information, implement the reception of the first synchronization signal, and thus realize the synchronization of the low-power receiver itself and improve the synchronization performance of the low-power receiver in receiving other signals (such as an LP-WUS).

[0095] In combination with the fourth aspect, in some implementations of the fourth aspect, the method further includes: sending second information, the second information indicating the first time domain position of the first synchronization signal.

[0096] As an example, when the quantity of first synchronization signals is multiple, the second information can include indication information of the time domain position of the first synchronization signal of the first transmission in the first synchronization signals.

[0097] In some embodiments, when the quantity of first synchronization signals is multiple, the first synchronization signals can be included in a first synchronization signal burst set. The second information can include indication information of the time domain position of the first synchronization signal of the first transmission in the first synchronization signal burst set.

[0098] In this implementation, the network device can also send the second information to the terminal, so that the terminal can determine the first time domain position based on the first information and the second information, and the accuracy of the determination of the first time domain position by the terminal is improved.

[0099] As an example, the second information can be delivered in the same message as the first information, or can be delivered through different messages, which are not limited in the present application.

[0100] In some implementations of the fourth aspect, the first time domain position is located in a first half of a system frame, or the first time domain position is located in a second half of the system frame.

[0101] In some implementations, the first time domain position can be located in a first half of a transmission period of the first synchronization signal, or located in a second half of the transmission period of the first synchronization signal. The transmission period of the first synchronization signal can be replaced by a monitoring period of the first synchronization signal.

[0102] In some implementations, the first time domain position can be located in N system frames in the communication bandwidth, where N can be an odd number or an even number.

[0103] In some implementations of the fourth aspect, when the first synchronization signal and a synchronization signal block (SSB) have a same subcarrier spacing, and a working frequency point of the first synchronization signal and a working frequency point of the SSB belong to a same frequency range, the first symbol index is related to at least one of the following: a second symbol index of the SSB, the working frequency point of the first synchronization signal, the working frequency point of the SSB, a number of resources occupied by the first synchronization signal in a time domain, or a number of resources occupied by the SSB in the time domain.

[0104] As an example, when the first synchronization signal and the SSB have a same SCS, and the working frequency point of the first synchronization signal and the working frequency point of the SSB belong to a same frequency range, the first synchronization signal can be considered to have a same case as the SSB. The first synchronization signal is associated with the SSB, or the first synchronization signal is a synchronization signal in a same cell as the SSB.

[0105] As an example, in the same case, if the working frequency points of the first synchronization signal and the second synchronization signal are different, the first synchronization signal can reuse a time domain position of the SSB with a same index. The time domain position of the SSB can be determined by a second symbol index and a number of resources occupied by the SSB in a time domain. The second symbol index can be understood as a starting symbol index of the SSB, which is an index of a first symbol of the SSB in the time domain. The same index can be understood as an index of the first synchronization signal in a first synchronization signal burst set being same as an index of the SSB in an SSB burst set, or an index of a beam used to transmit the first synchronization signal being same as an index of a beam used to transmit the SSB.

[0106] For example, when the first synchronization signal occupies 2 symbols in the time domain and the SSB occupies 4 symbols in the time domain, the 2 symbols occupied by the first synchronization signal can be multiplexed with the first 2 symbols of the 4 symbols occupied by the SSB with the same index; or the last 2 symbols of the 4 symbols occupied by the SSB with the same index; or the middle 2 symbols of the 4 symbols occupied by the SSB with the same index. For another example, when the first synchronization signal occupies 3 symbols in the time domain and the SSB occupies 4 symbols in the time domain, the 3 symbols occupied by the first synchronization signal can be multiplexed with the first 3 symbols of the 4 symbols occupied by the SSB with the same index; or the last 3 symbols of the 4 symbols occupied by the SSB with the same index. Therefore, in the same case, the time domain position of the first synchronization signal when multiplexed with the time domain position of the SSB with the same index is also related to the number of symbols occupied by the first synchronization signal in the time domain.

[0107] For example, in the same case, if the operating frequency point of the first synchronization signal is the same as that of the second synchronization signal, the first synchronization signal cannot be multiplexed with the time domain position of the SSB with the same index. At this time, the symbols occupied by the first synchronization signal in the time domain can only use the symbols not occupied by the SSB, or in other words, the symbols occupied by the first synchronization signal in the time domain can be mapped to the time domain position where no SSB is transmitted.

[0108] For example, the operating frequency point can be understood as a center frequency point, an absolute radio frequency channel number, a frequency number, an operating frequency range, or an offset from a common physical resource block, and the present application does not limit this.

[0109] In this implementation manner, the manner of determining the first symbol index based on the at least one piece of information can be predefined by a protocol, or configured by a network device or a core network, and the present application does not limit this.

[0110] In combination with the fourth aspect, in some implementation manners of the fourth aspect, the first transmission quantity is related to the first time domain position and / or a group to which the terminal belongs.

[0111] For example, the terminals can be grouped, and different first transmission quantities can be configured for the terminals in different groups. For example, the terminals in a cell can be divided into two groups, the first transmission quantity configured for the terminals in the first group can be 4 or 8, and the first transmission quantity configured for the terminals in the second group can be 2. The present application does not limit the specific implementation manners of grouping the terminals. The group to which the terminal belongs can include at least one terminal.

[0112] As an example, the first transmission quantity can be different in the first time domain position. For example, the first transmission quantity can be 4 or 8 when the first time domain position is located in the first time window; the first transmission quantity can be 2 when the first time domain position is located in the second time window. Wherein, the first time window and the second time window can be predefined by the protocol, or can be configured by the network device, and the present application does not make superfluous repetition. The first time window and the second time window can be the running time window of the timer.

[0113] In this implementation, since the first synchronization signal and the LP-WUS are signals introduced to meet the low-power consumption characteristics of the terminal, the network needs additional resources to transmit the first synchronization signal and / or the LP-WUS. Therefore, in the case that the synchronization of the low-power consumption receiver can be realized, and the reception synchronization of the LP-WUS is realized, different quantities of the first synchronization signal can be configured for the terminal according to different groups and / or different first time domain positions of the terminal. The resources occupied by the first synchronization signal and the LP-WUS can be reduced, so that the effect of saving energy of the terminal and saving network resources can be achieved.

[0114] In combination with the fourth aspect, in some implementations of the fourth aspect, when the subcarrier spacing of the first synchronization signal and the SSB is the same, and the operating frequency point of the first synchronization signal and the operating frequency point of the SSB belong to the same frequency range, the first transmission quantity is less than or equal to the second transmission quantity, and the second transmission quantity is the transmission quantity of the SSB in the first time length.

[0115] As an example, in the same case, the first transmission quantity can be less than the second transmission quantity, so that in the case that the synchronization of the low-power consumption receiver can be realized, and the reception synchronization of the LP-WUS is realized, the effect of saving energy of the terminal and saving network resources can be achieved.

[0116] In combination with the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving third information, the third information indicating updating the first transmission quantity and / or the index value of the first synchronization signal.

[0117] As an example, the index value of the first synchronization signal can be understood as the index of the first synchronization signal in the first synchronization signal burst set. Wherein, when each first synchronization signal in the first synchronization signal burst set is transmitted by different beams, updating the index value of the first synchronization signal is updating the index of the beam transmitting the first synchronization signal, so that the channel quality of the first synchronization signal can be adjusted, and the performance of the terminal is improved. Wherein, updating the transmission quantity of the first synchronization signal can also be understood as updating the number of beams transmitting the first synchronization signal, which can improve the network coverage range and improve the channel quality of the low-power consumption receiver.

[0118] As an example, the low-power signal can be an LP-WUS.

[0119] It should be noted that the first channel quality measurement result and the second channel quality measurement result are both channel quality measurement results of the low-power receiver, or can be channel quality measurement results of the same frequency point, or can be channel quality measurement results of the same cell.

[0120] In this implementation manner, the network device can update the first transmission quantity and / or the index value of the first synchronization signal after receiving the third information, thereby improving network coverage, improving channel quality of the low-power receiver, and improving network performance of the terminal.

[0121] With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes: sending fourth information, the fourth information indicating that the first synchronization signal is sent.

[0122] In this implementation manner, the network device can send the fourth information before sending the first information, so that the terminal can determine the first time domain position after receiving the fourth information, thereby reducing power consumption of the terminal and improving resource utilization.

[0123] With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes: receiving fifth information, the fifth information indicating whether to support not sending the first synchronization signal.

[0124] As an example, when the fifth information indicates that the LP-SS is supported, it means that the low-power receiver in the terminal has the capability of receiving the SSB, and at this time, the network device can not send the LP-SS, thereby saving network resource overhead. When the fifth information indicates that the LP-SS is not supported, it means that the low-power receiver can only realize synchronization of the low-power receiver through the LP-SS and does not have the capability of receiving the SSB, and at this time, the network device needs to send the LP-SS. It should be noted that the low-power receiver having the capability of receiving the SSB does not mean that the low-power receiver cannot receive the LP-SS, and at this time, the network device can still send the LP-SS.

[0125] In this implementation manner, the network device can determine whether to send the LP-SS or the SSB after receiving the fifth information, which helps to improve flexibility of the network device in sending the first synchronization signal.

[0126] In the fifth aspect, the present application provides a communication apparatus, which includes various modules for implementing the method in the first aspect or any of the implementation manners thereof, and each module can be implemented in the form of hardware and / or software.

[0127] For example, the apparatus can include a receiving module and a processing module. The receiving module is configured to receive first information, the first information indicating a first transmission quantity and / or a first symbol index of a first synchronization signal, the first transmission quantity being a quantity of transmissions of the first synchronization signal within a first time length, the first synchronization signal being a synchronization signal received by a low-power receiver of a terminal. The processing module is configured to determine a first time domain position of the first synchronization signal based on the first information.

[0128] With reference to the fifth aspect, in some implementations of the fifth aspect, the receiving module is further configured to receive second information, the second information indicating the first time domain position; and the processing module is specifically configured to determine the first time domain position based on the first information and the second information.

[0129] With reference to the fifth aspect, in some implementations of the fifth aspect, when a subcarrier spacing of the first synchronization signal and a synchronization signal block (SSB) is the same, and a working frequency point of the first synchronization signal and a working frequency point of the SSB belong to a same frequency range, the first symbol index is related to at least one of the following: a second symbol index of the SSB, the working frequency point of the first synchronization signal, the working frequency point of the SSB, a quantity of resources occupied by the first synchronization signal in a time domain, or a quantity of resources occupied by the SSB in the time domain.

[0130] With reference to the fifth aspect, in some implementations of the fifth aspect, the first time domain position is located in a first half frame of a system frame, or the first time domain position is located in a second half frame of the system frame.

[0131] With reference to the fifth aspect, in some implementations of the fifth aspect, the first transmission quantity is related to the first time domain position and / or a group in which the terminal is located.

[0132] With reference to the fifth aspect, in some implementations of the fifth aspect, when a subcarrier spacing of the first synchronization signal and a synchronization signal block (SSB) is the same, and a working frequency point of the first synchronization signal and a working frequency point of the SSB belong to a same frequency range, the first transmission quantity is less than or equal to a second transmission quantity, the second transmission quantity being a quantity of transmissions of the SSB within the first time length.

[0133] In some embodiments of the fifth aspect, the apparatus further includes a sending module. The sending module is configured to send third information indicating to update the first quantity of transmissions and / or the index value of the first synchronization signal when a first condition is satisfied, the first condition including one or more of: a first channel quality measurement result measured by the low power receiver being less than or equal to a first threshold and a second channel quality measurement result measured by a main receiver of the terminal being greater than the first threshold; or the low power receiver not receiving a low power signal in a second time duration and the second channel quality measurement result being greater than the first threshold.

[0134] In some embodiments of the fifth aspect, the receiving module is further configured to receive fourth information indicating to send the first synchronization signal.

[0135] In some embodiments of the fifth aspect, the sending module is further configured to send fifth information indicating whether not sending the first synchronization signal is supported.

[0136] In some embodiments of the fifth aspect, the receiving module is located in a low power receiver of the terminal, and the receiving module is further configured to receive the first synchronization signal at the first time domain location.

[0137] In the sixth aspect, the present application provides a communication apparatus, which includes various modules for implementing the method in the second aspect or any of the implementation manners thereof, and each module can be implemented in the form of hardware and / or software.

[0138] For example, the apparatus can include a processing module. The processing module is configured to activate the low power receiver in a third time window and not to activate the low power receiver in a fourth time window, the third time window and the fourth time window being related to at least one of: a first time domain location at which the low power receiver receives the first synchronization signal, or a group to which the terminal belongs.

[0139] In some embodiments of the sixth aspect, the third time window and the fourth time window are configured by any one of: signaling, a signal, or a channel.

[0140] In some embodiments of the sixth aspect, the length and / or starting time of the third time window and the fourth time window are not fixed.

[0141] In the seventh aspect, the present application provides a communication apparatus, which includes various modules for implementing the method in the third aspect or any of the implementation manners thereof, and each module can be implemented in the form of hardware and / or software.

[0142] For example, the apparatus can comprise: a processing module, configured to determine a monitoring occasion of a low-power consumption signal according to at least one of: a transmission number of the low-power consumption signal, an index of the low-power consumption signal, a repetition transmission number of the low-power consumption signal, or an identity carried in the low-power consumption signal; and a receiving module, configured to receive the low-power consumption signal at the monitoring occasion.

[0143] In an eighth aspect, the present application provides a communication apparatus, which comprises various modules for implementing the method in the fourth aspect or any of the implementation manners thereof, each of which can be implemented in the form of hardware and / or software.

[0144] For example, the apparatus can comprise: a sending module, configured to send first information, the first information indicating a first transmission number and / or a first symbol index of a first synchronization signal, the first transmission number being a transmission number of the first synchronization signal within a first time length, the first synchronization signal being a synchronization signal received by a low-power consumption receiver of a terminal.

[0145] In combination with the eighth aspect, in some implementation manners of the eighth aspect, the sending module is further configured to send second information, the second information indicating a first time domain position of the first synchronization signal.

[0146] In combination with the eighth aspect, in some implementation manners of the eighth aspect, the first time domain position is located in a first half frame of a system frame, or the first time domain position is located in a second half frame of the system frame.

[0147] In combination with the eighth aspect, in some implementation manners of the eighth aspect, when a subcarrier spacing of the first synchronization signal is same as that of a synchronization signal block (SSB), and a working frequency point of the first synchronization signal and a working frequency point of the SSB belong to a same frequency range, the first symbol index is related to at least one of: a second symbol index of the SSB, the working frequency point of the first synchronization signal, the working frequency point of the SSB, a resource number occupied by the first synchronization signal in a time domain, or a resource number occupied by the SSB in the time domain.

[0148] In combination with the eighth aspect, in some implementation manners of the eighth aspect, the first transmission number is related to the first time domain position and / or a group in which the terminal is located.

[0149] In combination with the eighth aspect, in some implementation manners of the eighth aspect, when a subcarrier spacing of the first synchronization signal is same as that of a SSB, and a working frequency point of the first synchronization signal and a working frequency point of the SSB belong to a same frequency range, the first transmission number is less than or equal to a second transmission number, the second transmission number being a transmission number of the SSB within the first time length.

[0150] With reference to the eighth aspect, in some implementations of the eighth aspect, the apparatus can further include a receiving module. The receiving module is configured to receive third information, the third information indicating to update the first quantity of transmissions and / or an index value of the first synchronization signal.

[0151] With reference to the eighth aspect, in some implementations of the eighth aspect, the transmitting module is further configured to transmit fourth information, the fourth information indicating to transmit the first synchronization signal.

[0152] With reference to the eighth aspect, in some implementations of the eighth aspect, the receiving module is further configured to receive fifth information, the fifth information indicating whether not transmitting the first synchronization signal is supported.

[0153] In a ninth aspect, the present disclosure provides a communication apparatus, including a processor, which can be coupled with a memory, and configured to invoke program codes in the memory to execute the method in the first aspect or any possible implementation thereof. Optionally, the apparatus further includes the memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled with the communication interface.

[0154] As an example, the apparatus can be a terminal, or a chip system, hardware circuit and / or software module applied in the terminal, or an apparatus capable of realizing the functions of the terminal, and the present disclosure does not limit it in this way.

[0155] In a tenth aspect, the present disclosure provides a communication apparatus, including a processor, which can be coupled with a memory, and configured to invoke program codes in the memory to execute the method in the second aspect or any possible implementation thereof. Optionally, the apparatus further includes the memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled with the communication interface.

[0156] As an example, the apparatus can be a terminal, or a chip system, hardware circuit and / or software module applied in the terminal, or an apparatus capable of realizing the functions of the terminal, and the present disclosure does not limit it in this way.

[0157] In an eleventh aspect, the present disclosure provides a communication apparatus, including a processor, which can be coupled with a memory, and configured to invoke program codes in the memory to execute the method in the third aspect or any possible implementation thereof. Optionally, the apparatus further includes the memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled with the communication interface.

[0158] As an example, the apparatus can be a terminal, or a chip system, hardware circuit and / or software module applied in the terminal, or an apparatus capable of realizing the functions of the terminal, and the present disclosure does not limit it in this way.

[0159] In a twelfth aspect, the present application provides a communication apparatus, including a processor, which can be coupled with a memory, for invoking program codes in the memory to execute the method according to the fourth aspect or any possible implementation manner thereof. Optionally, the apparatus further includes the memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled with the communication interface.

[0160] As an example, the apparatus can be a network device, a chip system, a hardware circuit and / or a software module applied in the network device, or an apparatus capable of realizing the function of the network device, and the present application does not limit this.

[0161] In a thirteenth aspect, the present application provides a communication system, including the apparatus according to the fifth aspect or the ninth aspect, and including the apparatus according to the eighth aspect or the twelfth aspect.

[0162] In a fourteenth aspect, the present application provides a computer program product including instructions, which, when executed on a computer, cause the computer to execute the method according to the first aspect, the second aspect, the third aspect, the fourth aspect or any possible implementation manner thereof.

[0163] In a fifteenth aspect, the present application provides a computer readable medium storing program codes for execution by an apparatus, the program codes including codes for executing the method according to the first aspect, the second aspect, the third aspect, the fourth aspect or any possible implementation manner thereof.

[0164] The technical effects brought by any one of the fifth aspect to the fifteenth aspect and any possible design in any one of the aspects can refer to the description of the technical effects brought by the first aspect to the fourth aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0165] Figure 1 The figure shows the architecture of a mobile communication system according to an embodiment of the present application;

[0166] Figure 2 The figure shows the working flow of a low-power wake-up receiver according to an embodiment of the present application;

[0167] Figure 3 The figure shows a schematic flowchart of a communication method according to an embodiment of the present application;

[0168] Figure 3a The figure shows a schematic illustration of a low-power signal monitoring time window according to an embodiment of the present application;

[0169] Figure 3bAn illustrative diagram of a low power signal monitoring time window is provided for another embodiment of the present application;

[0170] Figure 4 An illustrative diagram of a time domain location of a synchronization signal is provided for an embodiment of the present application;

[0171] Figure 5 An illustrative diagram of a number of transmissions of a LP-WUS is provided for an embodiment of the present application;

[0172] Figure 6 An illustrative diagram of a number of transmissions of a LP-WUS is provided for another embodiment of the present application;

[0173] Figure 7 An illustrative flow chart of updating a number of transmissions of a LP-SS and / or an index value of a LP-SS is provided for an embodiment of the present application;

[0174] Figure 7a An illustrative diagram of determining a LP-WUS monitoring occasion is provided for an embodiment of the present application;

[0175] Figure 7b An illustrative diagram of determining a LP-WUS monitoring occasion is provided for another embodiment of the present application;

[0176] Figure 7c An illustrative diagram of determining a LP-WUS monitoring occasion is provided for yet another embodiment of the present application;

[0177] Figure 7d An illustrative diagram of determining a LP-WUS monitoring occasion is provided for still another embodiment of the present application;

[0178] Figure 7e An illustrative diagram of determining a LP-WUS monitoring occasion is provided for yet another embodiment of the present application;

[0179] Figure 7f An illustrative diagram of determining a LP-WUS monitoring occasion is provided for another embodiment of the present application;

[0180] Figure 7g An illustrative diagram of determining a LP-WUS monitoring occasion is provided for yet another embodiment of the present application;

[0181] Figure 7h An illustrative diagram of determining a LP-WUS monitoring occasion is provided for another embodiment of the present application;

[0182] Figure 8 An illustrative diagram of a structure of a communication device is provided for an embodiment of the present application;

[0183] Figure 9 A structure diagram of a communication device according to another embodiment of the present application is provided.

[0184] Figure 10 A structure diagram of a communication device according to another embodiment of the present application is provided. DETAILED DESCRIPTION

[0185] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to indicate the same or similar components. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0186] In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same or similar items or similar items with basically the same function and role. Those skilled in the art can understand that the words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. also do not necessarily mean different.

[0187] It should be noted that in the embodiments of the present application, the words "exemplary" or "for example" are used to represent an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0188] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0189] The technical solutions provided in the present application can be applied to various communication systems, including but not limited to: a narrow band-internet of things (NB-IoT) system, a global system for mobile communications (GSM) system, an enhanced data rate for GSM evolution (EDGE) system, a wideband code division multiple access (WCDMA) system, a code division multiple access (CDMA2000) system, a time division-synchronization code division multiple access (TD-SCDMA) system, a wireless fidelity (WiFi) system, a 3rd generation (3G) mobile communication system, a long term evolution (LTE) system, an LTE advanced (LTE-A) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a fourth generation (4G) mobile communication system, a 5th generation (5G) mobile communication system, three application scenarios of a 5G new radio (NR) communication system: enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine type communication (mMTC), and a future sixth generation (6G) mobile communication system, for example, high frequency, terahertz, optical communication, etc., and the present application does not make a specific limitation.

[0190] Figure 1 A schematic diagram of an architecture of a mobile communication system is provided for an embodiment of the present application. As shown in the figure, the mobile communication system includes a core network device 110, a radio access network device 120, and at least one terminal device (for example, a terminal device 130). Figure 1 Figure 1 ​The terminal device can be connected to the wireless access network device in a wireless manner, and the wireless access network device can be connected to the core network device in a wireless or wired manner. The core network device and the wireless access network device can be independent and different physical devices, can be integrated into the same physical device, or can be a physical device integrated with part of the functions of the core network device and part of the functions of the wireless access network device. The application does not limit this. The terminal device can be fixed or mobile. It should be understood that Figure 1 The communication system can also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1 The application does not limit the number of core network devices, wireless access network devices, and terminal devices included in the mobile communication system.

[0191] The wireless access network device can be a base station (NodeB), an evolved base station (eNodeB), a base station in a 5G mobile communication system, a base station in a future mobile communication system, an access node in a WiFi system, or other communication terminals, etc. The embodiments of the application do not limit the specific technology and specific device form of the wireless access network device. The device for implementing the wireless access network device can be a wireless access network device or a device capable of supporting the wireless access network device to realize its functions, such as a chip system, which can be installed in the wireless access network device. In the embodiments of the application, the chip system can be composed of a chip or can include a chip and other discrete devices.

[0192] The terminal device can also be called a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote surgery, a wireless terminal in smart power grids, a wireless terminal in transportation safety, a wireless terminal in smart cities, a wireless terminal in smart homes, etc. The embodiments of the application do not limit the specific technology and specific device form of the terminal device. The device for implementing the terminal can be a terminal or a device capable of supporting the terminal to realize its functions, such as a chip system, which can be installed in the terminal.

[0193] The wireless access network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on aircraft, balloons and satellites in the air. Embodiments of the present application do not limit the application scenarios of the wireless access network device and the terminal device.

[0194] Embodiments of the present application can be applied to downlink signal transmission, uplink signal transmission and device to device (D2D) signal transmission. For downlink signal transmission, the sending device is the wireless access network device, and the corresponding receiving device is the terminal device. For uplink signal transmission, the sending device is the terminal device, and the corresponding receiving device is the wireless access network device. For D2D signal transmission, the sending device is the terminal device, and the corresponding receiving device is also the terminal device. Embodiments of the present application do not limit the transmission direction of the signal.

[0195] The wireless access network device and the terminal device, and the terminal device and the terminal device can communicate through licensed spectrum, unlicensed spectrum, or both. The wireless access network device and the terminal device, and the terminal device and the terminal device can communicate through spectrum below 6G, spectrum above 6G, or both. Embodiments of the present application do not limit the spectrum resources used by the wireless access network device and the terminal device.

[0196] The technical problems to be solved by the present application will be described below. Figure 2

[0197] In the 3rd generation partnership project (3GPP) release 18 (R18), a low power wake up signal (LP-WUS) is introduced to support the low power mechanism of the terminal device in R18. For example, the terminal device can include a main receiver (MR) and a low power wake up receiver (LP-WUR), and the terminal device can use the LP-WUR to monitor the LP-WUS and wake up the main receiver after receiving the LP-WUS to perform a paging procedure, a random access procedure, or implement data reception and transmission, thereby achieving the purpose of energy saving.

[0198] Figure 2 ​A schematic diagram of a workflow of a low-power wake-up receiver. As shown in Figure 2 The terminal device includes a main receiver and an LP-WUR. The network device (such as a radio access network device) can send an NR signal, an LP-WUS, and the like to the terminal device. The terminal device can use the main receiver to receive the NR signal and use the LP-WUR to listen to the LP-WUS. Before receiving the LP-WUS, the terminal device can set the main receiver to an off state or a deep sleep state. After receiving the LP-WUS, the terminal device can wake up the main receiver for data (such as an NR signal) reception and transmission, paging procedures, random access procedures, and the like, thereby achieving energy saving. It should be noted that the LP-WUR is in an on state by default.

[0199] It should be noted that before the terminal device receives a downlink signal, such as before the terminal device receives an NR signal through the main receiver or before the terminal device listens to an LP-WUS through the LP-WUR, the terminal device needs to achieve its own synchronization, thereby achieving synchronization performance of the terminal device receiving other signals. For example, the main receiver of the terminal device can be synchronized in time and frequency with the network device through the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) contained in the synchronization signal / physical broadcast channel block (SSB), thereby achieving synchronization of the main receiver itself, or in other words, achieving synchronization of the main receiver with the local clock, or in other words, achieving a time offset and / or frequency offset of the main receiver within a certain range, or in other words, achieving no time offset or frequency offset of the main receiver.

[0200] However, since the original design of the LP-WUR is to reduce the power consumption of the terminal. In some use scenarios, the receiver architecture of the LP-WUR can be a simple receiver architecture, so that the LP-WUR can not have the ability of signal processing (such as signal decoding, complex convolution, etc.), so it can not be able to receive the SSB, so as to realize the synchronization of the LP-WUR itself, and further realize the receiving synchronization of the LP-WUS. Therefore, in order to solve the technical problem, the relevant technical personnel proposes to design a low-power synchronization signal (LP-SS) for the LP-WUR, so that the LP-WUR of the terminal device can realize the synchronization performance of the LP-WUR receiving other signals (such as LP-WUS) through the LP-SS, or in other words, the LP-WUR can realize the receiving synchronization of other signals (such as LP-WUS) through the LP-SS. However, after introducing the LP-SS, how to determine the time domain position of the LP-SS to realize the receiving of the LP-SS becomes a problem to be solved.

[0201] Therefore, the present application provides a communication method and a communication device. In the technical solution provided by the present application, the time domain position of the LP-SS can be determined according to the association between the time domain position of the LP-SS and the time domain position of the SSB, so as to realize the receiving of the LP-SS, and realize the synchronization of the LP-WUR itself through the received LP-SS, and improve the synchronization performance of the LP-WUR other signals (such as LP-WUS). Wherein, the LP-SS is associated with the SSB, or in other words, the LP-SS and the SSB are the synchronization signals under the same cell, or in other words, the LP-SS and the SSB are associated with the same cell.

[0202] In the embodiments of the present application, the LP-SS can be an on-off keying (OOK) based low-power synchronization signal, or a frequency shift keying (FSK) based low-power synchronization signal, or an orthogonal frequency-division multiplexing (OFDM) based low-power synchronization signal, or a low-power synchronization signal based on fusion of the above different modulation modes. The fusion scheme is not limited herein, for example, fusion of OOK and OFDM, or fusion of FSK and OFDM. The OOK modulation can be understood as signaling in part of the time domain resources, and no signaling in part of the time domain resources. The fusion scheme of OOK and OFDM can be understood as using OOK modulation to carry part of the information, and using OFDM modulation in the time domain resources with OOK signaling. One implementable scheme is to use different sequences to distinguish different terminals in the part of the time domain resources with OOK signaling, for example, using Zadoff-Chu (ZC) sequences. In this way, the data rate of signal transmission can be increased, and the detection performance of the signal can be improved. In some embodiments, the network device can periodically send the LP-SS. In some embodiments, the LP-SS sent by the network device can be at the cell level, that is, all UEs in a cell can receive the same synchronization signal. It should be understood that the LP-SS is only an example and is not limited. For example, as long as the LP-WUR can achieve synchronization of the LP-WUR itself by receiving a certain signal, the signal can be considered as the LP-SS. The LP-SS can also be other names, which are not limited herein.

[0203] The technical solutions provided by the present application can be applied to power-sensitive devices and small devices, such as Internet of Things use scenarios (such as industrial sensors and controllers), wearable devices, extended reality (XR) / smart glasses, smart phones, or other application scenarios, which are not limited by the present application.

[0204] In order to facilitate understanding of the technical solutions provided by the present application, the time domain position of the SSB is first described.

[0205] As an example, the network device (such as a radio access network device) can periodically send the SSB, so that the terminal device can ensure the synchronization performance of receiving other signals or channels at any time point. For example, the main receiver of the terminal device can receive the SSB in the fixed known monitoring period of the SSB according to the needs of the terminal device, to ensure the synchronization performance of receiving other signals or channels. For example, when performing cell search, the main receiver of the terminal device can monitor the SSB according to the operator and the working frequency band supported by the terminal device, to perform time-frequency synchronization.

[0206] In some embodiments, the network device can transmit one SSB burst in one transmission period, and the SSB burst can include multiple SSBs, each of which corresponds to a different index or index value. The transmission time or time domain position of each of the multiple SSBs has a fixed pattern. According to different subcarrier spacings (SCS), there are five different cases for the time domain position of the SSB, as shown in Table 1 below. It should be understood that the time domain position of the SSB can be determined by Table 1.

[0207] Table 1: Start symbols for each subcarrier spacing and frequency

[0208]

[0209] It should be noted that the five types in Table 1 are all for one half frame. The SSB occupies 4 symbols in the time domain, and the start symbol index of the SSB can be understood as the index of the first symbol of the 4 symbols occupied by the SSB in the time domain. The symbol can be an orthogonal frequency division multiplexing (OFDM) symbol. L indicates the number of SSBs transmitted in the half frame, or the number of beams of the SSBs transmitted in the half frame, and f indicates the operating frequency point of the SSB. Among them, the half frame can be understood as half of a system frame, and the length of the system frame is defined as 10 milliseconds (ms), and the length of the half frame is 5 ms. One system frame includes 10 subframes, and the length of each subframe is 1 ms. One subframe can be further divided into multiple slots, and the number of slots is related to the subcarrier spacing. For example, when the subcarrier spacing is 15 kHz, one subframe is equal to one slot; when the subcarrier spacing is 30 kHz, one subframe is equal to two slots. One slot can include 14 OFDM symbols.

[0210] In case A: subcarrier spacing is 15 kHz, the starting symbol index of SSB is {2, 8} + 14*n. When f<=3GHz, n=0, 1. Wherein, n=0, the starting symbol index of SSB is {2, 8}; n=1, the starting symbol index of SSB is {16, 22}. It can be seen that SSBs occupy 2 slots in total, 2 SSBs are contained in 1 slot, so L=4. When 3<=f<=6GHz, n=0, 1, 2, 3. Wherein, n=0, the starting symbol index of SSB is {2, 8}; n=1, the starting symbol index of SSB is {16, 22}; n=2, the starting symbol index of SSB is {30, 36}; n=3, the starting symbol index of SSB is {44, 50}. It can be seen that SSBs occupy 4 slots in total, 2 SSBs are contained in 1 slot, L=8.

[0211] In case B: subcarrier spacing is 30 kHz, the starting symbol index of SSB is {4, 8, 16, 20} + 28*n. When f<=3GHz, n=0. Wherein, n=0, the starting symbol index of SSB is {4, 8, 16, 20}. It can be seen that SSBs occupy 2 slots in total, 2 SSBs are contained in 1 slot, so L=4. When 3<=f<=6GHz, n=0, 1. It can be determined that SSBs occupy 4 slots in total, 2 SSBs are contained in 1 slot, so L=8.

[0212] In case C: subcarrier spacing is 15 kHz, the starting symbol index of SSB is {2, 8} + 14*n. When f<=3GHz, n=0, 1. It can be determined that SSBs occupy 2 slots in total, 2 SSBs are contained in 1 slot, so L=4. When 3<=f<=6GHz, n=0, 1, 2, 3. It can be determined that SSBs occupy 4 slots in total, 2 SSBs are contained in 1 slot, so L=8.

[0213] In case D: subcarrier spacing is 120 kHz, the starting symbol index of SSB is {4, 8, 16, 20} + 28*n. When f>6GHz, n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18. Wherein, 8 slots are contained in 1 subframe, 2 SSBs are contained in 1 slot, so 16 SSBs are contained in 1 subframe, 4 groups in total, then L=64.

[0214] In case E, the subcarrier spacing is 240 kHz, and the starting symbol index of the SSB is {8, 12, 16, 20, 32, 36, 40, 44} + 56*n. When f>6GHz, n=0, 1, 2, 3, 5, 6, 7, 8. Among them, 1 subframe contains 16 slots, 1 slot contains 2 SSBs, so 1 subframe contains 32 SSBs, a total of 2 groups, then L=64.

[0215] Based on this, when the network device transmits multiple SSBs, the main receiver of the terminal device can monitor the first SSB, and after monitoring the first SSB, determine the time domain positions of other SSBs based on the time domain position of the first SSB and the time domain position relationship of the SSBs transmitted by different beams in Table 1. For example, in case A, when f<=3GHz, the starting symbol index of the SSB is {2, 8}+14*n. If the starting symbol index of the first SSB is 2, then the starting symbol index of the second SSB is 8, the starting symbol index of the third SSB is 16, and the starting symbol index of the fourth SSB is 22. It should be noted that the time domain position of the first SSB can be the time when the main receiver of the terminal device monitors the SSB.

[0216] The following will be combined with Figures 3 to 7 The technical solutions provided by the embodiments of the present application will be described.

[0217] Figure 3 A schematic flow chart of a communication method provided by an embodiment of the present application. As shown in the figure, the method can include S301, S302 and S303. Figure 3

[0218] S301, receiving first information, the first information indicating a first transmission quantity and / or a first symbol index.

[0219] As an example, the terminal can receive the first information transmitted by the network device.

[0220] ​As an example, the terminal can include a low-power receiver and a main receiver. Among them, the device for implementing the function of the low-power receiver can be the low-power receiver itself, or a device (such as a chip system) capable of supporting the low-power receiver to implement its function, which can be installed in the low-power receiver or independently arranged, and the low-power receiver can implement its function by calling the device. The present application does not make specific limitations on this. Correspondingly, the device for implementing the function of the main receiver can be the main receiver itself, or a device (such as a chip system) capable of supporting the main receiver to implement its function, which can be installed in the main receiver or independently arranged, and the main receiver can implement its function by calling the device. The present application does not make specific limitations on this. It should be understood that in the embodiments of the present application, the terminal, the main receiver and the low-power receiver can interact information. The low-power receiver can be an LP-WUR.

[0221] As an example, the terminal receiving the first information can be understood as receiving the first information by the terminal, or receiving the first information by the chip system, hardware circuit and / or software module applied in the terminal, or receiving the first information by the main receiver in the terminal, or receiving the first information by the low-power receiver in the terminal. The present application does not make specific limitations on this.

[0222] In the embodiment, the first information can indicate the first transmission quantity.

[0223] In a possible implementation, the first transmission quantity can be the number of transmissions of the first synchronization signal in the first time length, or in other words, the number of beams used for transmitting the first synchronization signal in the first time length. In this implementation, the first time length can be understood as the monitoring time length of the first synchronization signal. The first time length can be pre-defined by a protocol, or can be configured by a network device or a core network, and the present application does not make limitations on this. For example, the first time length can be one system frame, or the first time length can be one half frame, or the first time length can be represented by other time domain units, such as time domain units of time slots, micro time slots, symbols, subframes, seconds, milliseconds, etc., without limitation. The network device can transmit a plurality of first synchronization signals in the first time length. The contents of each first synchronization signal in the plurality of first synchronization signals transmitted in the first time length are consistent.

[0224] In the embodiments of the present application, the monitoring can be replaced by receiving, blind detection, detection, or demodulation, etc. The present application does not make limitations on this.

[0225] In some embodiments, the first transmission quantity can also be understood as the number of first synchronization signals included in a first synchronization signal burst. The first synchronization signal burst can be any first synchronization signal burst, and the present application does not make limitations on this. At this time, the first time length can be the time domain resource occupied by a first synchronization signal burst set.

[0226] In this implementation, when the first information indicates the first transmission quantity, the first information can contain a specific value of the first transmission quantity, or the first information can contain an index of the first synchronization signal burst, and the index of the first synchronization signal burst indicates the quantity of the first synchronization signals contained in the burst, i.e., the first transmission quantity.

[0227] In this embodiment, the first information can indicate the first symbol index.

[0228] In a possible implementation, the first symbol index can be a symbol index of the first synchronization signal. The first synchronization signal can be a synchronization signal received by the low-power receiver. In some embodiments, the first symbol index can be a starting symbol index of the first synchronization signal. For example, if the first synchronization signal occupies 3 symbols in the time domain, the starting symbol index value is the index of the first symbol of the 3 symbols occupied by the first synchronization signal.

[0229] As an example, when the transmission quantity of the first synchronization signal is multiple, the first symbol index can contain a starting symbol index of each first synchronization signal in the first synchronization signal. In this example, the first transmission quantity can be consistent with the quantity of the starting symbol indexes contained in the first symbol index.

[0230] In some embodiments, the first symbol index can be embodied in a set manner. For example, the first symbol index can contain an index value of each first synchronization signal in a first synchronization signal burst. The index value can be an index value of each first synchronization signal in the first synchronization signal burst, or a starting symbol index of each first synchronization signal, which is not limited herein.

[0231] In this embodiment, the first information can indicate the first transmission quantity and the first symbol index. The first symbol index can contain symbol indexes of part of the first synchronization signals in the multiple first synchronization signals.

[0232] In the embodiments of this application, the first synchronization signal can be an LP-SS. In some scenarios, if the low-power receiver has the capability of signal processing, and thus can receive an SSB, the first synchronization signal can be an SSB.

[0233] S302, determining a first time domain position of the first synchronization signal based on the first information.

[0234] In the embodiments of this application, after receiving the first information, the terminal can determine the first time domain position of the first synchronization signal based on the first information.

[0235] In the S301, the terminal determines the first time domain position. The first time domain position can be determined by the terminal, or determined by a chip system, a hardware circuit and / or a software module applied in the terminal, or determined by a main receiver in the terminal, or determined by a low-power receiver in the terminal. The application does not make a specific limitation in this regard.

[0236] As an example, when the first information indicates the first transmission quantity, the terminal can determine the first time domain position in the second time domain position based on the first information. The second time domain position can be understood as a time domain position that the first synchronization signal can occupy. It should be understood that the number of time domain positions contained in the second time domain position can be greater than or equal to the first transmission quantity. In this example, after receiving the first information and determining the first transmission quantity based on the first information, the terminal can determine the first time domain position in the second time domain position based on the relationship between the first transmission quantity and the time domain position. The second time domain position and the relationship between the first transmission quantity and the time domain position can be predefined by a protocol, configured by a network device or a core network, or pre-configured in the terminal. The application does not make a specific limitation in this regard.

[0237] As an example, when the first information indicates the first symbol index, and the first symbol index contains the starting symbol index of each first synchronization signal in the plurality of first synchronization signals, the terminal can determine the first time domain position based on the first information and the resource occupied by the first synchronization signal in the time domain. The plurality of first synchronization signals can belong to the same first synchronization signal burst. The resource occupied by the first synchronization signal in the time domain can be a time domain resource or a time domain unit, such as a system frame, a subframe, a second, a millisecond, a time slot, a symbol, or a mini-slot, etc. The resource occupied by the first synchronization signal in the time domain can be predefined by a protocol or configured by a network device. The application does not make a specific limitation in this regard.

[0238] As an example, when the first information indicates the first symbol index, and the first symbol index contains the index value of each first synchronization signal in the plurality of first synchronization signals in the first synchronization signal burst, the terminal can determine the first time domain position based on the first information and the relationship between the index value of the first synchronization signal in the first synchronization signal burst and the time domain position. The relationship between the index value of the first synchronization signal in the first synchronization signal burst and the time domain position can be predefined by a protocol or configured by a network device. The application does not make a specific limitation in this regard.

[0239] As an example, when the first information indicates the first transmission quantity and the first symbol index, and the first symbol index includes a starting symbol index of a first first synchronization signal in a plurality of first synchronization signals, the terminal can determine the first time domain position based on the first information, a relationship between starting symbol indexes of each first synchronization signal, and resources occupied by the first synchronization signal in the time domain. The relationship between the time domain positions of each first synchronization signal can be predefined by a protocol or configured by the network device, which is not limited in the present application. In some embodiments, the first symbol index can also indicate a starting symbol index value of a last first synchronization signal in the plurality of first synchronization signals, which is not limited in the present application.

[0240] In S303, the low-power receiver of the terminal receives the first synchronization signal at the first time domain position.

[0241] After determining the first time domain position, the terminal can receive the first synchronization signal at the first time domain position, so as to realize synchronization of the low-power receiver itself, and further realize synchronization performance of the low-power receiver receiving other signals (such as LP-WUS).

[0242] In the embodiment, the network device can indicate the first time domain position of the first synchronization signal by indicating the first transmission quantity and / or the first symbol index, so that the terminal can determine the first time domain position based on the first transmission quantity and / or the first symbol index, and receive the first synchronization signal at the first time domain position to realize synchronization of the low-power receiver. The embodiment improves the synchronization performance of the low-power receiver receiving the LP-WUS, and improves the network performance of the terminal.

[0243] It should be noted that the first information is only an example and is not limited, as long as the terminal can determine the first time domain position of the first synchronization signal based on certain information issued by the network device, the information can be included in the scope of the first information.

[0244] In a possible implementation manner, the first transmission quantity can be a transmission quantity of a low-power signal in a third time length, or can be a quantity of beams used for transmitting the low-power signal in the third time length. In the implementation manner, the third time length can be understood as a monitoring time length of the low-power signal. The network device can transmit a plurality of low-power signals in the third time length. The content of each low-power signal in the plurality of low-power signals transmitted in the third time length is the same. The low-power signal can be the LP-WUS.

[0245] In the implementation manner, the terminal can determine the transmission quantity of the first synchronization signal in the first time length based on the transmission quantity of the low-power signal in the third time length, so as to determine the first time domain position. The transmission quantity of the low-power signal is related to the transmission quantity of the first synchronization signal. The third time length can be the same as or different from the first time length, which is not specifically limited in the present application.

[0246] In some embodiments, the third duration can also be understood as a monitoring time window of the low-power signals. The monitoring time window can contain one or more monitoring occasions (MOs). The terminal can monitor the low-power signals on each monitoring occasion, and the first transmission number can be related to the number of monitoring occasions in the monitoring time window.

[0247] Figure 3a An illustrative diagram of a monitoring time window of low-power signals is provided for an embodiment of the present application. Figure 3a In one embodiment, one low-power signal is transmitted by one beam only, that is, the beams for transmitting each low-power signal are different. The beams being different can be understood as the beams having different indices or different directions. As shown in Figure 3a The monitoring time window of the low-power signals contains 4 monitoring occasions, and the low-power signals monitored by the terminal on each monitoring occasion are transmitted by different beams. In this example, the first transmission number is the same as the number of monitoring occasions in the monitoring time window of the low-power signals, that is, the first transmission number is 4.

[0248] Figure 3b An illustrative diagram of a monitoring time window of low-power signals is provided for another embodiment of the present application. Figure 3b In another embodiment, one low-power signal can be repeatedly transmitted by one beam, that is, one low-power signal can be transmitted by one beam multiple times. The number of repeated transmissions of each low-power signal can be the same. The number of repeated transmissions can be the difference between the total number of transmissions and 1. As shown in Figure 3b The monitoring time window of the low-power signals contains 6 monitoring occasions, and each low-power signal is transmitted by one beam 3 times, that is, each low-power signal is repeatedly transmitted by one beam 2 times. Therefore, the low-power signals monitored by the terminal on the 6 monitoring occasions are transmitted by only 2 beams. For example, the low-power signals monitored by the terminal on monitoring occasion 1, monitoring occasion 2, and monitoring occasion 3 are transmitted by beam 1. The low-power signals monitored by the terminal on monitoring occasion 4, monitoring occasion 5, and monitoring occasion 6 are transmitted by beam 2. In this example, the first transmission number is different from the number of monitoring occasions in the monitoring time window of the low-power signals. The first transmission number is the number of beams for transmitting low-power signals in the third duration, that is, the first transmission number is 2.

[0249] In combination with Figure 3a and Figure 3b It can be seen that the first transmission number essentially indicates how many different low-power signals are transmitted in a period of time (such as the third duration). The low-power signals being different can be understood as the beams for transmitting the low-power signals having different directions or indices. Therefore, in Figure 3aIn the embodiment, since only one low-power signal is transmitted in one beam direction, or no low-power signal is repeatedly transmitted in one beam direction, the first transmission quantity is the same as the quantity of monitoring occasions included in the time period, that is, the first transmission quantity is the quantity of different low-power signals transmitted in the monitoring occasions included in the time period.

[0250] It should be noted that, Figure 3a Figure 3b In the embodiment, the beams and the low-power signals are in one-to-one correspondence, that is, one beam can transmit one or more low-power signals corresponding to the beam.

[0251] In a possible implementation, the first symbol index can be a symbol index of the low-power signal. For example, the first symbol index can be a starting symbol index of the low-power signal.

[0252] In the implementation, the terminal can determine the transmission quantity of the low-power signal based on the first symbol index, and then determine the transmission quantity of the first synchronization signal. For example, when the transmission quantity of the low-power signal is multiple, the first symbol index can include the starting symbol index of each low-power signal in the low-power signal. The transmission quantity of the low-power signal is consistent with the quantity of the starting symbol indexes included in the first symbol index.

[0253] In the implementation, the terminal can determine the starting symbol index value of the first synchronization signal based on the first symbol index, and then determine the first time domain position. The relationship between the first symbol index and the starting symbol index value of the first synchronization signal can be set according to actual requirements, and the application does not limit this.

[0254] In a possible implementation, the terminal can further receive second information sent by the network device, and the second information indicates the first time domain position, so that the terminal can determine the first time domain position based on the first information and the second information, and improve the accuracy of the determined first time domain position. The application does not limit the specific implementation of determining the first time domain position based on the first information and the second information. As an example, when the quantity of the first synchronization signals is multiple, the second information can indicate the time domain position of the first transmitted first synchronization signal in the multiple first synchronization signals. In some embodiments, when the quantity of the first synchronization signals is multiple, the first synchronization signals can be included in one first synchronization signal burst. The second information can indicate the time domain position of the first transmitted first synchronization signal in the first synchronization signal burst.

[0255] ​In the example, if the first information indicates the first transmission quantity, the terminal can determine the time domain position of each first synchronization signal, i.e., the first time domain position, based on the time domain position of the first first synchronization signal, the relationship between the time domain positions of each first synchronization signal, and the first transmission quantity. The relationship between the time domain positions of each first synchronization signal can be the relationship between the starting symbol indexes of each first synchronization signal. In the example, if the first information indicates the first symbol index and the first symbol index contains the index of each first synchronization signal in the first synchronization signal burst, the terminal can determine the time domain position of the first synchronization signal corresponding to each index in the first synchronization signal burst, i.e., the first time domain position, based on the time domain position of the first first synchronization signal, the relationship between the time domain positions of each first synchronization signal, and the first symbol index.

[0256] In an implementable manner, the network device can directly indicate the first time domain position of the first synchronization signal, such as the time domain position of each first synchronization signal, to the terminal, so that the terminal can determine the first time domain position without the received first information and / or second information, thereby improving the communication efficiency and enhancing the performance of the terminal.

[0257] In an implementable manner, when the first synchronization signal is an LP-SS, the time domain position of the LP-SS can be related to the time domain position of the SSB, so that the time domain positions of LP-SSs with different indexes in an LP-SS burst can be determined while minimizing the impact on the protocol. The LP-SS is associated with the SSB, that is, the LP-SS and the SSB are synchronization signals under the same cell, or the LP-SS and the SSB are associated with the same cell. The minimization of the impact on the protocol can be understood as minimizing the impact on the existing protocol, or as reducing the impact on the existing protocol as much as possible.

[0258] As an example, five different types (cases) of time-domain locations of LP-SS can be designed according to different subcarrier spacings and operating frequencies in this application, as shown in Table 2. Among them, under the same case, and the operating frequency of the LP-SS is different from the operating frequency of the SSB, the time-domain location of the LP-SS can reuse the time-domain location of the SSB with the same index. Among them, the same case can be understood as the SCS of the LP-SS and the SSB is the same, and the operating frequency of the LP-SS and the operating frequency of the SSB belong to the same frequency range. It should be noted that the SSBs contained in one SSB burst can be transmitted by beams in different directions, or the index of each SSB in the SSB burst can also be understood as the index of the beam used to transmit each SSB, and the direction of each beam is different. Correspondingly, the LP-SSs contained in one LP-SS burst can also be transmitted by beams in different directions, or the index of each LP-SS in the LP-SS burst can also be understood as the index of the beam used to transmit each LP-SS, and the direction of each beam is different. Therefore, under the same case, if the number of SSBs contained in the SSB burst is consistent with the number of LP-SSs contained in the LP-SS burst, the beams used to transmit the SSBs can be used to transmit the LP-SSs. Therefore, the SSB with the same index and the LP-SS can be understood as the index of the SSB in the SSB burst is the same as the index of the LP-SS in the LP-SS burst, or the SSB and the LP-SS are transmitted by the same beam, or the index of the beam used to transmit the SSB is the same as the index of the beam used to transmit the LP-SS. In the embodiments of the present application, the operating frequency can be understood as the center frequency, the absolute radio frequency channel number, the frequency number, the operating frequency range, or the offset from the common physical resource block, which is not limited in the present application.

[0259] Table 2: Start symbols for each subcarrier spacing and frequency

[0260]

[0261] It should be noted that the start symbol index of the LP-SS in Table 2 is an example of the LP-SS occupying 2 symbols in the time domain. The start symbol index of the LP-SS in Table 2 is an example of the operating frequency of the LP-SS being different from the operating frequency of the SSB.

[0262] It can be seen that the starting symbol index of the LP-SS in Table 2 contains 3 patterns, as shown in the 3 columns of data in the starting symbol index of the LP-SS in Table 2. The 5 cases in Table 2 are all for a half frame. The starting symbol index of the LP-SS can be understood as the index of the 1st symbol of 2 symbols occupied by each LP-SS in a LP-SS burst in the time domain, L represents the number of LP-SSs contained in a LP-SS burst, or the number of transmissions of LP-SSs in a half frame, or the number of beams transmitting LP-SSs in a half frame, and f represents the working frequency point of the LP-SS.

[0263] As shown in Table 2, when one LP-SS occupies 2 symbols in the time domain, since one SSB occupies 4 positions in the time domain, under the same case, the 2 symbols occupied by the LP-SS can be multiplexed with the first 2 symbols of the 4 symbols occupied by the SSB with the same index in the time domain, as shown in the 1st pattern in the starting symbol index of the LP-SS in Table 2, i.e., the 1st column of data in the starting symbol index of the LP-SS; or can be multiplexed with the last 2 symbols of the 4 symbols occupied by the SSB with the same index in the time domain, as shown in the 3rd pattern in the starting symbol index of the LP-SS in Table 2, i.e., the 3rd column of data in the starting symbol index of the LP-SS; or can be multiplexed with the middle 2 symbols of the 4 symbols occupied by the SSB with the same index in the time domain, as shown in the 2nd pattern in the starting symbol index of the LP-SS in Table 2, i.e., the 2nd column of data in the starting symbol index of the LP-SS. Among them, the 1st, 2nd and 3rd columns are counted from left to right in sequence.

[0264] Figure 4 A time-domain position diagram of a synchronization signal provided for an embodiment of the present application. Figure 4 The types of the SSB and the LP-SS are both case B, and f<=3GHz. As shown in Figure 4 , one SSB burst sent by the network device can contain 4 SSBs, each SSB corresponding to a different index, such as SSB#0, SSB#1, SSB#2 and SSB#3, and one LP-SS burst sent by the network device contains 4 LP-SSs, each LP-SS corresponding to a different index, such as LP-SS#0, LP-SS#1, LP-SS#2 and LP-SS#3. Among them, one SSB occupies 4 symbols in the time domain, and one LP-SS occupies 2 symbols in the time domain. As shown in Figure 4 , the 2 symbols occupied by the LP-SS coincide with the first 2 symbols of the 4 symbols occupied by the SSB with the same index in the time domain.

[0265] It can be understood that, when the time domain positions of the SSBs with the same index are multiplexed in the time domain of the LP-SS, the starting symbol index of the LP-SS is related to the number of symbols occupied by the LP-SS in the time domain. For example, when one LP-SS occupies 3 symbols in the time domain, the starting symbol of the LP-SS is the first column and the second column in the starting symbol index of the LP-SS in Table 2; for another example, when one LP-SS occupies 4 symbols in the time domain, the starting symbol of the LP-SS is the first column in the starting symbol index of the LP-SS in Table 2; for another example, when the number of symbols occupied by one LP-SS in the time domain is greater than 4, 4 symbols of the number of symbols occupied by the LP-SS in the time domain can multiplex 4 symbols occupied by the SSB with the same index in the time domain, and other symbols occupied by the LP-SS in the time domain can use symbols not occupied by the SSB, or in other words, the other symbols occupied by the LP-SS in the time domain can be mapped to time domain positions without SSB transmission.

[0266] It should be noted that part or all of the information in Table 2 can be predefined by a protocol, or can be configured by a network device or a core network, so that the terminal can determine the time domain position of the LP-SS based on Table 2, implement the reception of the LP-SS, and further implement the synchronization reception of the LP-WUS.

[0267] For example, when the LP-SS occupies 2 symbols, the starting symbol index of the LP-SS contains 3 patterns in Table 2. At this time, in order to ensure the maximum flexibility of the network device, the network device or the core network can indicate the time domain position of the LP-SS according to the use of network resources, such as indicating the starting symbol index of the LP-SS, or in other words, indicating which starting symbol index pattern is used, so that the terminal can determine the time domain position of the LP-SS. For another example, the network device and the core network can also configure the transmission number of the LP-SS for the terminal, such as L in Table 2, that is, the transmission number of the LP-SS in a half frame.

[0268] In a possible implementation, under the same case, the transmission number of the LP-SS can be less than or equal to the transmission number of the SSB, and the transmission number of the SSB can be understood as the number of beams transmitting the SSB.

[0269] It should be noted that in the same case, if the number of transmissions of the LP-SS is less than the number of transmissions of the SSB, then the number of multiplexed time domain positions of the LP-SS is greater than the number of transmissions of the LP-SS, at which time the time domain position of the LP-SS can be determined according to the actual resource occupation in the network. For example, the network device can indicate the time domain position of the LP-SS with different indexes in a LP-SS burst when indicating the number of transmissions of the LP-SS. The same index of the LP-SS in different LP-SS bursts can occupy different time domain positions. In some embodiments, a mapping relationship between the time domain position of the LP-SS and the number of transmissions of the LP-SS can be established, so that the terminal determines the time domain position of the LP-SS based on the number of transmissions of the LP-SS when receiving the number of transmissions of the LP-SS.

[0270] As an example, when the network device or the core network issues the related configuration of the LP-SS (such as the time domain position of the LP-SS, the number of transmissions of the LP-SS, etc.) to the terminal, it can be configured separately through signaling or carried through a signal or a channel. The signaling is, for example, a system information block (SIB), SIB1, a radio resource control (RRC) message, a media access control-control element (MAC-CE) signaling, downlink control information (DCI), uplink control information (UCI), a non-access stratum (NAS) message, a message identification (MID), etc. The signal is, for example, an LP-WUS, an LP-SS, or a paging message, etc. The channel is, for example, a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH). In some embodiments, the time domain position of the LP-SS with different indexes in the next LP-SS burst can be carried through the LP-SS corresponding to one of the indexes (such as the last one) in the previous LP-SS burst. In some embodiments, the time domain position of the LP-SS can be indicated by the starting symbol index of the LP-SS.

[0271] In a possible implementation, when the network device or the core network indicates the time domain position (for example, a starting symbol index value) of the LP-SS to the terminal, the network device or the core network can send the time domain position of the LP-SS to the main receiver, the main receiver can forward the received time domain position to the LP-WUR, or the main receiver can forward the time domain position to the LP-WUR after converting the time domain position into an absolute time domain position after receiving the time domain position. It should be noted that when the network device or the core network indicates the time domain position of the LP-SS as a starting symbol index, the starting symbol index is a relative position relative to a half frame, or in other words, the starting symbol index is offset from the starting position of a certain half frame, for example, when the starting symbol of the LP-SS is 2, the time domain position of the LP-SS can be understood as a time domain position offset by 2 symbols from the starting position of the half frame. The absolute time domain position can be understood as a time domain position offset from the starting position of the time domain position of the entire communication system.

[0272] In a possible implementation, the relative positions of the time domain positions of all the LP-SSs in a LP-SS burst in a system frame can be consistent with the relative positions of the time domain positions of all the SSBs in a SSB burst in a system frame, or can not be consistent, which is not limited in the present application. For example, the time domain positions of all the LP-SSs in a LP-SS burst can be located in the first half of a system frame, that is, the first 5S in a system frame. For another example, the time domain positions of all the LP-SSs in a LP-SS burst are located in the second half of a system frame, that is, the last 5S in a system frame. Wherein, when the time domain positions of all the LP-SSs in a LP-SS burst are located in the first half of a system frame, the relative positions of the time domain positions of all the LP-SSs in a LP-SS burst in a system frame are consistent with the relative positions of the time domain positions of all the SSBs in a SSB burst in a system frame.

[0273] In some implementations, the first time domain position can be located in the first half of a transmission period of the first synchronization signal, or in the second half of the transmission period of the first synchronization signal. Wherein, the transmission period of the first synchronization signal can be understood as a period in which the network device transmits the first synchronization signal, or can be understood as a monitoring period in which the terminal monitors the first synchronization signal.

[0274] In some implementations, the first time domain position can be located in N system frames in a communication bandwidth, and N can be an odd number or an even number.

[0275] As an example, the relative positions of the time domain positions of all the LP-SSs in a LP-SS burst in a system frame can be configured by the network device or the core network, or predefined by a protocol, which is not limited in the present application.

[0276] It can be understood that, since both the LP-WUS and the LP-SS are newly introduced signals for meeting the low power consumption characteristics of the terminal, the network needs additional resources to transmit the LP-SS and / or the LP-WUS, including time domain resources and frequency domain resources. Therefore, in order to save network resources, in the embodiments of the present application, the transmission quantity of the LP-SS can be reduced in the case that the synchronization of the LP-WUR can be achieved, and thus the reception synchronization of the LP-WUS can be achieved, so as to reduce the resources occupied by the LP-SS and the LP-WUS. Wherein, the transmission quantity of the LP-WUS is related to the transmission quantity of the LP-SS, if the transmission quantity of the LP-SS is reduced, the transmission quantity of the LP-WUS will also be reduced accordingly, so as to reduce the resources occupied by the LP-SS and the LP-WUS.

[0277] As an example, in the case that the working frequency point of the LP-WUS is the same as the working frequency point of the LP-SS, and the working frequency point of the LP-SS is different from the working frequency point of the SSB, the transmission quantity of the LP-WUS can be the same as the transmission quantity of the LP-SS. Figure 5 An illustrative diagram of the transmission quantity of the LP-WUS is provided for an embodiment of the present application. As shown in Figure 5 The network device can transmit an LP-SS burst, so that the terminal can achieve the synchronization and measurement of the LP-WUR by receiving the LP-SS. The LP-SS burst contains 4 LP-SSs, such as LP-SS#0, LP-SS#1, LP-SS#2 and LP-SS#3, each LP-SS is transmitted by a different beam. Correspondingly, the LP-WUR in the terminal can receive the LP-SS burst and measure the signal quality of each LP-SS to determine the index of the LP-SS with the best signal quality. Wherein, the signal quality of the LP-SS can also be understood as the signal quality of the beam used to transmit the LP-SS, or can be understood as the channel quality of the LP-WUR when the LP-WUR receives the LP-SS.

[0278] In addition, the network device can also send an LP-WUS burst to wake up the main receiver of the terminal after the terminal receives the LP-WUS. The LP-WUS burst contains four LP-WUSs, such as LP-WUS#0, LP-WUS#1, LP-WUS#2, and LP-WUS#3. Among them, the network device can use the same beam to transmit the LP-SS and the LP-WUS with the same index. The same beam can be understood as the same index beam or the same direction beam. When the terminal receives the LP-WUS, it can only receive the LP-WUS corresponding to the index of the best channel quality LP-SS, thereby realizing the synchronous reception of the LP-WUS. For example, when the terminal measures the signal quality of the LP-SS#1 to be the best, the terminal can only receive the LP-WUS#1.

[0279] In a possible implementation, in a network high-load scenario, the number of transmitted LP-SSs or the number of beams configured for the LP-SS can be reduced to reduce the resources occupied by the LP-SS and the LP-WUS, so as to achieve the purpose of terminal energy saving and network resource saving.

[0280] As an example, reducing the number of transmitted LP-SSs can be understood as that the network device selects part of the LP-SSs in a to-be-transmitted LP-SS burst for transmission in a first time period.

[0281] As an example, the network device can configure a smaller number of beams for the LP-SS, which can be understood as that the network device can select part of the beams for transmitting the LP-SS from the beams used for transmitting the LP-SS in a first time period. It should be understood that the coverage of the beams is not changed in this example.

[0282] As an example, the network device can configure a smaller number of beams for the LP-SS, which can be understood as that the network device can reduce the number of beams for transmitting the LP-SS in a first time period, but expand the coverage direction of the beam or make the beam wider. For example, when the network device reduces the number of beams for transmitting the LP-SS from four to two, the space needs to be re-divided into two antenna directions to realize the area coverage of the network.

[0283] In the embodiments of the present application, one beam can carry one signal. The signal is, for example, an LP-SS, an SSB, or an LP-WUS. Taking the LP-SS as an example, the LP-SS can correspond to the beam one by one, that is, one beam can only transmit the LP-SS corresponding to the beam. At this time, the number of transmitted LP-SSs is the same as the number of beams for transmitting the LP-SS. It can be understood that reducing the number of beams will result in worse network coverage, or in other words, reducing the number of beams will result in a reduction in the coverage radius of the network, or in a reduction in the network coverage area or coverage range.

[0284] In a possible implementation, when the network device configures a smaller number of beams for the LP-SS, the network device can deliver the configuration to the terminal through signaling, a signal, or a channel. For details, refer to the related description in the foregoing embodiments, which are not described here.

[0285] In a possible implementation, when the network device configures a smaller number of beams for the LP-SS, different configuration manners can correspond to different configuration granularities, and the configuration granularity can include a cell, a group, a subgroup, or a terminal.

[0286] For example, Table 3 below can represent the mapping relationship between the configuration manner and the configuration granularity.

[0287] Table 3

[0288]

[0289] Taking the LP-SS as an example, since the LP-SS is information common to all terminals in a cell, if the number of beams is carried in the LP-SS, all terminals in the cell can receive the LP-SS. Therefore, when the number of beams is configured through the LP-SS, it can be understood as a cell-level configuration.

[0290] Taking the LP-WUS as an example, if the LP-WUS carries the identity (ID) of a subgroup, when the number of beams is configured through the LP-WUS, it can be understood as a subgroup-level configuration. If the LP-WUS carries the identity of a terminal, when the number of beams is configured through the LP-WUS, it can be understood as a terminal-level configuration.

[0291] In a possible implementation, when the network device configures a smaller number of beams for the LP-SS, it can be understood that the network device configures different numbers of beams for the LP-SS of terminals in different groups. For example, the network device can group the terminals and configure different numbers of beams for the terminals in different groups.

[0292] For example, assume that the terminals in a cell are divided into two groups. During the first running of a timer, the terminals in the first group can be configured with a larger number of beams, such as 4 or 8 beams, and the terminals in the second group can be configured with a smaller number of beams, such as 2 beams. During the second running of the timer, the terminals in the first group can be configured with a smaller number of beams, such as 2 beams, and the terminals in the second group can be configured with a larger number of beams, such as 4 or 8 beams. It should be noted that configuring different numbers of beams for different groups during different running of the timer can be understood as configuring different numbers of beams in different time domain position ranges, or in different time windows.

[0293] As an example, the terminals can be grouped in any of the following ways: terminal subgroups, paging occasion (PO) locations, paging early indication (PEI) locations, terminal IDs, LP-WUS monitoring occasion (LO) locations, or LP-WUS monitoring occasion (MO) locations. One LO can contain one or more MOs. Taking PO locations as an example, terminals that monitor paging messages at a first PO location can be grouped as a first group or subgroup, and terminals that monitor paging messages at a second PO location can be grouped as a second group or subgroup.

[0294] In some implementations, the time ranges in which terminals in different groups enter the low-power mode can be different, to save network resource overhead. The terminals enter the low-power mode, which can also be referred to as activating the LP-WUR, or enabling the LP-WUR. The different time ranges can be understood as different time-domain location ranges, or different time windows. For example, during a first time period of a timer, terminals in a first group can enter the low-power mode, and terminals in a second group can exit the low-power mode. During a second time period of the timer, the terminals in the first group can exit the low-power mode, and the terminals in the second group can enter the low-power mode. In embodiments of this application, the low-power mode can also be referred to as the LP-WUS mode, which is not limited in this application.

[0295] In one possible implementation, when the LP-SS and the SSB operate at the same frequency point, the number of transmissions of the LP-SS, or the number of beams configured for the LP-SS, can be reduced, to reduce the resources occupied by the LP-SS and the LP-WUS, to achieve the purpose of saving energy for the terminals and saving network resources. In some embodiments, the LP-SS and the SSB operate at the same frequency point, which can also be understood as the LP-WUR and the main receiver operating at the same frequency point.

[0296] In this implementation, in the same case, if the LP-SS and the SSB operate at the same frequency point, the LP-SS cannot reuse the time-domain locations of the SSB with the same index, and the SSB and the LP-SS are transmitted using the method of time division multiple access (TDMA), or the LP-SS can only use the symbols not occupied by the SSB. The beams used to transmit the LP-SS are different from the beams used to transmit the SSB.

[0297] In this implementation, the number of LP-WUS transmissions is the sum of the number of LP-SS transmissions and the number of SSB transmissions. Figure 6 A schematic diagram illustrating another number of LP-WUS transmissions provided for one embodiment of this application. Figure 6 Both the SSB and LP-SS types are case B, and f <= 3 GHz. For example... Figure 6 As shown, since the network device does not know whether the terminal's LP-WUR has the capability to receive SSBs, the network device sends an SSB burst and an LP-SS burst so that the terminal can achieve LP-WUR synchronization and measurement by receiving either LP-SS or SSB. The SSB burst contains four SSBs, such as SSB#0, SSB#1, SSB#2, and SSB#3, each transmitted through a different beam. The LP-SS burst contains two LP-SSs, such as LP-SS#0 and LP-SS#1, each transmitted through a different beam. It can be seen that when the LP-SS and SSB operate at the same frequency, the LP-SS can only use the unused symbols of the SSB. Correspondingly, when the terminal's LP-WUR has the capability to receive SSBs, the LP-WUR in the terminal can receive both the SSB burst and the LP-SS burst, measure the signal quality of each SSB and each LP-SS, determine the downlink synchronization signal with the best signal quality, and the index of that downlink synchronization signal. The signal quality of SSB can also be understood as the signal quality of the beam used to transmit SSB, or as the channel quality of LP-WUR when receiving SSB.

[0298] Additionally, the network device can send an LP-WUS burst to wake up the master receiver upon receiving the LP-WUS. This LP-WUS burst contains six LP-WUS signals. The network device can use the beam used to transmit the SSB to transmit the LP-WUS corresponding to the SSB, such as... Figure 6 The LP-WUS identified as SSB#0, SSB#1, SSB#2, and SSB#3 use the beam used to transmit LP-SS to transmit the corresponding LP-WUS, such as... Figure 6 The LP-WUS is identified as LP-SS#0 and LP-SS#1. When receiving LP-WUS, the terminal can receive only the LP-WUS corresponding to the index of the downlink synchronization signal with the best channel quality, thereby achieving synchronous reception of LP-WUS. For example, if the terminal measures that the signal quality of LP-SS#0 is the best, the terminal can receive only the LP-WUS identified as LP-SS#0.

[0299] Therefore, when the number of transmissions of the LP-WUS is the sum of the number of transmissions of the LP-SS and the number of transmissions of the SSB, the terminal power consumption increases, and the network resources occupied by the LP-WUS are relatively large. Therefore, when the operating frequency points of the SSB and the LP-SS are the same, the number of transmissions of the LP-SS or the number of beams for transmitting the LP-SS can be reduced, so that the terminal energy saving and network resource saving effects can be achieved.

[0300] In some embodiments, whether the operating frequency points of the LP-WUR and the main receiver are the same or whether the operating frequency points of the LP-SS and the SSB are the same can be implicitly indicated by the number of transmissions of the LP-SS. For example, if the number of transmissions of the LP-SS is 4 or 8, it is implicitly indicated that the LP-WUR and the main receiver operate at different frequency points, and in this case, the LP-SS can multiplex the time domain positions of the SSBs with the same index. For another example, if the number of transmissions of the LP-SS is not equal to 4 or 8, it is implicitly indicated that the LP-WUR and the main receiver operate at the same frequency point, and in this case, the LP-SS can only use the symbols not occupied by the SSB.

[0301] In the embodiments of the present application, one beam can correspond to multiple signals, that is, one beam can transmit multiple signals corresponding to the beam. In this case, the network device can indicate the mapping relationship between the index of each signal in the multiple signals and the beam index through the indication information (such as SIB), so that the MO position of the terminal for monitoring the signals can be reduced, and the power consumption of the terminal is reduced.

[0302] In some embodiments, the network device configures a smaller number of beams for the LP-SS, which can cause poor network coverage or weak channel quality of the LP-WUR measured by the LP-WUR, so that the terminal is difficult to enter the low-power mode and achieve the energy saving effect. Therefore, the terminal can send third information to the network device when a first condition is met, the third information indicating updating the number of transmissions of the LP-SS and / or the index value of the LP-SS. The first condition can include one or more of the following: the first channel quality measurement result measured by the LP-WUR is less than or equal to a first threshold, and the second channel quality measurement result measured by the main receiver is greater than the first threshold; or the LP-WUR does not receive the LP-WUS within a second time length, and the second channel quality measurement result is greater than the first threshold. The first threshold can be predefined by a protocol or can be configured by the network device or the core network, which is not limited in the present application.

[0303] Figure 7 An exemplary flowchart for updating the number of transmissions of the LP-SS and / or the index value of the LP-SS is provided for an embodiment of the present application. As shown in FIG. 7, the method can include S701-S703. Figure 7 S701-S703.

[0304] S701a, the LP-WUR receives the LP-SS.

[0305] In this embodiment, after the terminal turns on the LP-WUR, the LP-WUR can receive the LP-SS sent by the network device.

[0306] S701b, the LP-WUR synchronizes and measures through the LP-SS.

[0307] In this embodiment, after the LP-WUR receives the LP-SS, the LP-WUR can synchronize and measure through the LP-SS. If the channel quality measurement result of the LP-WUR measured by the LP-WUR is greater than a first threshold, S701c is executed, and if the channel quality measurement result of the LP-WUR measured by the LP-WUR is less than or equal to the first threshold, S702a is executed.

[0308] S701c, the LP-WUR receives the LP-WUS within a second time length.

[0309] As an example, when the channel quality measurement result measured by the LP-WUR is greater than the first threshold, the LP-WUR can receive the LP-WUS within the second time length. If the LP-WUR receives the LP-WUS within the second time length, the LP-WUR can wake up the main receiver and execute the legacy process, such as receiving the SSB by the main receiver and implementing synchronization of itself through the SSB, then listening to the PEI or directly listening to the paging message at the receiving position of the paging message. If the LP-WUR does not receive the LP-WUS within the second time length, S702a is executed.

[0310] As an example, the second time length can be predefined by a protocol, or can be configured by the network device or the core network, which is not limited in the present application.

[0311] S702a, the main receiver receives the SSB.

[0312] In this embodiment, when the channel quality measurement result measured by the LP-WUR is less than or equal to the first threshold, or the LP-WUR does not receive the LP-WUS within the second time length, the main receiver can be started. After the main receiver is started, the main receiver can receive the SSB sent by the network device.

[0313] S702b, the main receiver measures the channel quality of the LP-WUR through the SSB.

[0314] In this embodiment, after receiving the SSB and synchronizing itself through the SSB, the main receiver can measure the channel quality of the LP-WUR through the SSB. If the channel quality measurement result measured by the main receiver is less than or equal to a first threshold, S703a is performed; if the channel quality measurement result measured by the main receiver is greater than the first threshold, S703b is performed.

[0315] S703a, the main receiver falls back to a legacy process.

[0316] For example, if the channel quality measurement result measured by the main receiver is less than or equal to the first threshold, the main receiver falls back to a legacy process, such as the main receiver listens to the PEI or directly listens to the paging message at the receiving position of the paging message after synchronizing itself through the SSB, and re-measures the channel quality of the LP-WUR through the SSB after a fourth time duration, until the channel quality measurement result measured by the main receiver is greater than the first threshold.

[0317] For example, the fourth time duration can be predefined by a protocol, or can be configured by a network device or a core network, which is not limited in the present application.

[0318] S703b, the main receiver sends third information to the network device, the third information indicating updating the transmission quantity of the LP-SS and / or the index value of the LP-SS.

[0319] For example, if the channel quality measurement result measured by the main receiver is greater than the first threshold, it indicates that the network coverage is poor due to the reduction of the beam quantity of the LP-SS, thereby causing the channel quality measured by the LP-WUR to be inaccurate. At this time, the main receiver can send third information to the network device, the third information indicating the network device to adjust the transmission quantity of the LP-SS and / or the index of the LP-SS, thereby improving the communication quality of the LP-WUR. For example, the third information can indicate the network device to increase the transmission quantity of the LP-SS, or in other words, to increase the beam quantity of the LP-SS to improve the network coverage capability. For another example, the third information can indicate the network device to adjust the index of the LP-SS, or in other words, to adjust the beam index of the LP-SS, that is, to adjust the direction of the beam of the LP-SS to improve the network coverage capability. For another example, the third information can indicate the network device to increase the beam quantity of the LP-SS and adjust the direction of the beam of the LP-SS at the same time.

[0320] In some embodiments, after the main receiver sends the third information, or after the network device updates or adjusts the transmission quantity of the LP-SS and / or the index of the LP-SS, the terminal can turn off the main receiver and enter a low-power mode.

[0321] It should be noted that if the network device updates the transmission quantity of the LP-SS and / or the index of the LP-SS based on the third information, and the LP-WUR still does not receive the LP-WUS within the second time length, or the channel quality measurement result measured by the LP-WUR is still less than or equal to the first threshold, the terminal exits the low-power mode, or in other words, the terminal turns off the LP-WUR, falls back to a traditional process, and after a fourth time length, the main receiver re-measures the channel quality of the LP-WUR through the SSB.

[0322] It should be noted that the traditional process refers to a paging process in an RRC idle state, an RRC connected state, and an RRC inactive state. If the terminal falls back to the traditional process, the terminal can determine to monitor the PDCCH or enter a sleep state according to an existing energy saving technology. For example, the energy saving technology in the RRC connected state includes connected discontinuous reception (CDRX), a wake-up signal (WUS), PDCCH skipping, search space set group switching, cross-slot scheduling, bandwidth part (BWP) switching, and the like.

[0323] In this embodiment, when the first condition is met, the terminal can send third information to the network device to instruct the network device to update the transmission quantity of the LP-SS and / or the index of the LP-SS, so as to guarantee the low-power performance of the terminal and save resource overhead.

[0324] In some embodiments, the network device can send fourth information to the terminal, and the fourth information can indicate whether the network device enables the LP-SS, or in other words, the fourth information indicates whether the network device will send the LP-SS. If the fourth information indicates that the network device enables the LP-SS, the terminal can monitor the LP-SS after receiving the fourth information, so as to reduce the power consumption of the terminal. For example, the network device can not send the LP-SS in a high-load scenario. In some embodiments, the terminal can activate the LP-WUR and monitor the LP-SS after receiving the fourth information.

[0325] In some embodiments, the terminal can send fifth information to the network device, the fifth information can indicate whether the terminal supports not sending the LP-SS. If the fifth information indicates that the terminal supports not sending the LP-SS, it means that the LP-WUR in the terminal has the capability of receiving the SSB, at this time the network device can not send the LP-SS to save network resource overhead. It should be noted that the LP-WUR has the capability of receiving the SSB, which does not mean that the LP-WUR cannot receive the LP-SS, at this time the network device can still send the LP-SS. If the fifth information indicates that the LP-WUR does not support not sending the LP-SS, it means that the LP-WUR can only realize synchronization of the LP-WUR through the LP-SS and does not have the capability of receiving the SSB, at this time the network device needs to send the LP-SS.

[0326] In some embodiments, the fifth information can contain the type of the LP-WUR of the terminal. For example, when the type of the LP-WUR is a simple receiver, it means that the terminal does not support not sending the LP-SS, the LP-WUR can only realize synchronization of the LP-WUR through the LP-SS and does not have the capability of receiving the SSB, at this time the network device needs to send the LP-SS. For another example, when the type of the LP-WUR is a receiver with signal processing function, it means that the terminal supports not sending the LP-SS, at this time the network device can send the SSB and / or the LP-SS.

[0327] On the basis of the foregoing embodiments, after the LP-WUR of the terminal determines the index of the low-power signal with the best channel quality, the LP-WUR of the terminal can further determine the monitoring occasion corresponding to the low-power signal with the index in the monitoring time window of the low-power signal, so as to realize reception of the low-power signal. The monitoring occasion of the low-power signal can be understood as the time domain position at which the terminal monitors the low-power signal. The following takes the low-power signal as the LP-WUS as an example, and the detailed description of the scheme is as follows. Figures 7a to 7h The following examples are described in detail. In the following examples, one beam corresponds to one LP-WUS, and one beam can transmit one or more low-power signals corresponding to the beam.

[0328] In a possible implementation manner, the monitoring occasion of the LP-WUS can be related to at least one of the following: the transmission quantity of the LP-WUS, the index of the LP-WUS, the repetition transmission quantity of the LP-WUS, or the identifier carried in the LP-WUS. The transmission quantity of the LP-WUS can refer to the number of times of transmission of the LP-WUS in one monitoring occasion. Figure 3a and Figure 3bThe index of the LP-WUS can be an index of the LP-WUS in the LP-WUS burst, which is not limited herein. It should be understood that when the LP-WUS corresponds to one beam, the index of the LP-WUS also corresponds to the index of the beam. The number of repeated transmissions of the LP-WUS can be the number of repeated transmissions of the LP-WUS by the beam corresponding to the LP-WUS. The identification carried in the LP-WUS can be a sub-group identification, a group identification, or an identification of different granularities.

[0329] In this embodiment, the monitoring time window of the LP-WUS contains at least one monitoring occasion of the LP-WUS, and each monitoring occasion corresponds to one LP-WUS.

[0330] In a possible implementation, if there are N different LP-WUSs, each of the N LP-WUSs is not repeatedly transmitted, and each LP-WUS carries the same identification, the monitoring time window of the LP-WUS can contain N monitoring occasions. The different LP-WUSs can be understood as different indexes of the LP-WUSs or different beams transmitting the LP-WUSs. N is a positive integer.

[0331] wherein, when the index M of the LP-WUS is a positive integer, that is, M = 1, 2, …, N, the LP-WUS with the index M can correspond to the Mth monitoring occasion. When the index M of the LP-WUS is a positive integer greater than or equal to 0, that is, M = 0, 1, …, N-1, the LP-WUS with the index M can correspond to the (M+1)th monitoring occasion. In this implementation, the content of the LP-WUS monitored by the terminal is the same.

[0332] Figure 7a An illustrative diagram for determining a monitoring occasion of an LP-WUS is shown. Figure 7a The monitoring occasions in the same monitoring time window belong to the same monitoring time window. As shown in Figure 7a The monitoring time window of the LP-WUS contains four monitoring occasions, and the terminal can monitor four different LP-WUSs on the four monitoring occasions. For example, the terminal can monitor the LP-WUS with the index #1 on the first monitoring occasion (such as monitoring occasion 1), monitor the LP-WUS with the index #2 on the second monitoring occasion (such as monitoring occasion 2), monitor the LP-WUS with the index #3 on the third monitoring occasion (such as monitoring occasion 3), and monitor the LP-WUS with the index #4 on the fourth monitoring occasion (such as monitoring occasion 4). It can be seen that the monitoring occasions in this example correspond to the LP-WUSs one by one, that is, each monitoring occasion corresponds to one LP-WUS. The LP-WUS corresponding to each monitoring occasion is different.

[0333] In one possible implementation, if there are N different LP-WUS, each LP-WUS is retransmitted Q times, and each LP-WUS carries the same identifier, then the monitoring time window of the LP-WUS can contain N*(Q+1) monitoring opportunities. Different LP-WUS can be understood as different LP-WUS indices or different beams used to transmit the LP-WUS. N and Q are positive integers.

[0334] In this implementation, when the index M of the LP-WUS is a positive integer (M = 1, 2, ..., N), if the index of a certain LP-WUS is M, then the LP-WUS can correspond to the (P*N+M)th monitoring opportunity or the ((M-1)*(Q+1)+P+1)th monitoring opportunity during the Pth repeated transmission. When the index M of the LP-WUS is an integer greater than or equal to 0 (M = 0, 1, ..., N-1), if the index of a certain LP-WUS is M, then the LP-WUS can correspond to the (P*N+(M+1))th monitoring opportunity or the (M*(Q+1)+P+1)th monitoring opportunity during the Pth repeated transmission. P is a positive integer greater than or equal to 0. In this implementation, the content of the LP-WUS monitored by the terminal is the same.

[0335] Figure 7b , Figure 7c A schematic diagram illustrating how to determine the timing of LP-WUS monitoring is shown. Figure 7b and Figure 7c There are two different LP-WUS, and each LP-WUS is repeated twice. Figure 7b The LP-WUS with index M can correspond to the (P*N+M)th monitoring opportunity during the Pth repeated transmission. Figure 7c When the LP-WUS with index M is transmitted for the Pth time, it can correspond to the ((M-1)*(Q+1)+P+1)th monitoring opportunity.

[0336] like Figure 7b As shown, the LP-WUS monitoring time window contains 6 monitoring opportunities. LP-WUS with index #1 corresponds to the 1st monitoring opportunity (monitoring opportunity 1) during the 0th retransmission; the 3rd monitoring opportunity (monitoring opportunity 3) during the 1st retransmission; and the 5th monitoring opportunity (monitoring opportunity 5) during the 2nd retransmission. Correspondingly, LP-WUS with index #2 corresponds to the 2nd monitoring opportunity (monitoring opportunity 2) during the 0th retransmission; the 4th monitoring opportunity (monitoring opportunity 4) during the 1st retransmission; and the 6th monitoring opportunity (monitoring opportunity 6) during the 2nd retransmission.

[0337] like Figure 7cAs shown, the monitoring time window of the LP-WUS contains 6 monitoring occasions. The LP-WUS with index #1 corresponds to the 1st monitoring occasion, i.e., monitoring occasion 1, at the 0th repeated transmission; corresponds to the 1st monitoring occasion, i.e., monitoring occasion 1, at the 1st repeated transmission; and corresponds to the 3rd monitoring occasion, i.e., monitoring occasion 3, at the 2nd repeated transmission. Correspondingly, the LP-WUS with index #2 corresponds to the 4th monitoring occasion, i.e., monitoring occasion 4, at the 0th repeated transmission; corresponds to the 5th monitoring occasion, i.e., monitoring occasion 5, at the 1st repeated transmission; and corresponds to the 6th monitoring occasion, i.e., monitoring occasion 6, at the 2nd repeated transmission.

[0338] In a possible implementation, if there are S types of LP-WUS, each type of LP-WUS contains N different LP-WUS, and each LP-WUS in the N LP-WUS is not repeatedly transmitted, the monitoring time window of the LP-WUS can contain (S*N) monitoring occasions. In this implementation, the LP-WUS can be classified according to the identification carried in the LP-WUS, that is, the identification carried in the LP-WUS belonging to the same type is the same, or the content of the LP-WUS belonging to the same type is the same. The LP-WUS is different, which can be understood as that the index of the LP-WUS is different, or the beam for transmitting the LP-WUS is different. N and S are positive integers.

[0339] In the formula, when the index M of the LP-WUS is a positive integer, i.e., M = 1, 2, …, N, the LP-WUS with index M in the Kth type of LP-WUS can correspond to the ((K-1)*N+M)th monitoring occasion, or can correspond to the ((M-1)*S+K)th monitoring occasion. When the index M of the LP-WUS is an integer greater than or equal to 0, i.e., M = 0, 1, …, N-1, the LP-WUS with index M in the Kth type of LP-WUS can correspond to the ((K-1)*N+(M+1))th monitoring occasion, or can correspond to the (M*S+K)th monitoring occasion. K is a positive integer.

[0340] Figure 7d 、 Figure 7e An illustrative diagram for determining the monitoring occasion of the LP-WUS is shown. Figure 7d and Figure 7e In the formula, there are 2 types of LP-WUS, and each type of LP-WUS contains 2 different LP-WUS. Figure 7d In the Kth type of LP-WUS in the formula, the LP-WUS with index M can correspond to the (K-1)*N+M)th monitoring occasion. Figure 7e In the Kth type of LP-WUS in the formula, the LP-WUS with index M can correspond to the ((M-1)*S+K)th monitoring occasion.

[0341] As shown in Figure 7d , the monitoring time window of the LP-WUS contains 4 monitoring occasions. #1-1 represents the LP-WUS with index 1 in the 1st type, and #1-2 represents the LP-WUS with index 2 in the 1st type. #2-1 represents the LP-WUS with index 1 in the 2nd type, and #2-2 represents the LP-WUS with index 2 in the 2nd type. Among them, the LP-WUS of #1-1 corresponds to the 1st monitoring occasion, i.e., monitoring occasion 1, and the LP-WUS of #1-2 corresponds to the 2nd monitoring occasion, i.e., monitoring occasion 2. The LP-WUS of #2-1 corresponds to the 3rd monitoring occasion, i.e., monitoring occasion 3, and the LP-WUS of #2-2 corresponds to the 4th monitoring occasion, i.e., monitoring occasion 4.

[0342] As shown in Figure 7e , the monitoring time window of the LP-WUS contains 4 monitoring occasions. #1-1 represents the LP-WUS with index 1 in the 1st type, and #1-2 represents the LP-WUS with index 2 in the 1st type. #2-1 represents the LP-WUS with index 1 in the 2nd type, and #2-2 represents the LP-WUS with index 2 in the 2nd type. Among them, the LP-WUS of #1-1 corresponds to the 1st monitoring occasion, i.e., monitoring occasion 1, and the LP-WUS of #1-2 corresponds to the 3rd monitoring occasion, i.e., monitoring occasion 3. The LP-WUS of #2-1 corresponds to the 2nd monitoring occasion, i.e., monitoring occasion 2, and the LP-WUS of #2-2 corresponds to the 4th monitoring occasion, i.e., monitoring occasion 4.

[0343] In a possible implementation, if there are S types of LP-WUS, each type of LP-WUS contains N different LP-WUS, and the number of repeated transmissions of each LP-WUS in the N LP-WUS is Q, the monitoring time window of the LP-WUS can contain (S*N*(Q+1)) monitoring occasions. In this implementation, the LP-WUS can be classified according to the identification carried in the LP-WUS, that is, the identification carried in the LP-WUS belonging to the same type is the same, or the content of the LP-WUS belonging to the same type is the same. The LP-WUS is different, which can be understood as that the index of the LP-WUS is different, or the beam for transmitting the LP-WUS is different. N, S, and Q are positive integers.

[0344] In the case where the index M of the LP-WUS is a positive integer, i.e., M = 1, 2, …, N, the LP-WUS with index M in the Kth type of LP-WUS can correspond to the ((K-1)*N*(Q+1)+P*N+M)th monitoring occasion, or can correspond to the ((K-1)*N*(Q+1)+(M-1)*(Q+1)+P+1)th monitoring occasion, or can correspond to the (P*S*N+(K-1)*N+M)th monitoring occasion in the Pth repeated transmission. In the case where the index M of the LP-WUS is an integer greater than or equal to 0, i.e., M = 0, 1, …, N-1, the LP-WUS with index M in the Kth type of LP-WUS can correspond to the ((K-1)*N*(Q+1)+P*N+(M+1))th monitoring occasion, or can correspond to the ((K-1)*N*(Q+1)+M*(Q+1)+P+1)th monitoring occasion, or can correspond to the (P*S*N+(K-1)*N+(M+1))th monitoring occasion in the Pth repeated transmission. P is a positive integer greater than or equal to 0. K is a positive integer.

[0345] Figure 7f , Figure 7g , Figure 7h An illustrative diagram of determining LP-WUS monitoring occasions is shown. Figure 7f , Figure 7g and Figure 7h In the case where the index M of the LP-WUS is a positive integer, i.e., M = 1, 2, …, N, the LP-WUS with index M in the Kth type of LP-WUS can correspond to the ((K-1)*N*(Q+1)+P*N+M)th monitoring occasion, or can correspond to the ((K-1)*N*(Q+1)+(M-1)*(Q+1)+P+1)th monitoring occasion, or can correspond to the (P*S*N+(K-1)*N+M)th monitoring occasion in the Pth repeated transmission. In the case where the index M of the LP-WUS is an integer greater than or equal to 0, i.e., M = 0, 1, …, N-1, the LP-WUS with index M in the Kth type of LP-WUS can correspond to the ((K-1)*N*(Q+1)+P*N+(M+1))th monitoring occasion, or can correspond to the ((K-1)*N*(Q+1)+M*(Q+1)+P+1)th monitoring occasion, or can correspond to the (P*S*N+(K-1)*N+(M+1))th monitoring occasion in the Pth repeated transmission. P is a positive integer greater than or equal to 0. K is a positive integer. Figure 7f Figure 7g Figure 7h

[0346] As Figure 7f ​​​As shown, 12 monitoring occasions are contained in the monitoring time window of the LP-WUS. #1-1 represents the LP-WUS with index 1 in the first type, and #1-2 represents the LP-WUS with index 2 in the first type. #2-1 represents the LP-WUS with index 1 in the second type, and #2-2 represents the LP-WUS with index 2 in the second type. The LP-WUS of #1-1 corresponds to the first monitoring occasion, i.e., monitoring occasion 1, in the 0th repetition transmission; corresponds to the third monitoring occasion, i.e., monitoring occasion 3, in the 1st repetition transmission; and corresponds to the fifth monitoring occasion, i.e., monitoring occasion 5, in the 2nd repetition transmission. The LP-WUS of #1-2 corresponds to the second monitoring occasion, i.e., monitoring occasion 2, in the 0th repetition transmission; corresponds to the fourth monitoring occasion, i.e., monitoring occasion 4, in the 1st repetition transmission; and corresponds to the sixth monitoring occasion, i.e., monitoring occasion 6, in the 2nd repetition transmission. The LP-WUS of #2-1 corresponds to the seventh monitoring occasion, i.e., monitoring occasion 7, in the 0th repetition transmission; corresponds to the ninth monitoring occasion, i.e., monitoring occasion 9, in the 1st repetition transmission; and corresponds to the eleventh monitoring occasion, i.e., monitoring occasion 11, in the 2nd repetition transmission. The LP-WUS of #2-2 corresponds to the eighth monitoring occasion, i.e., monitoring occasion 8, in the 0th repetition transmission; corresponds to the tenth monitoring occasion, i.e., monitoring occasion 10, in the 1st repetition transmission; and corresponds to the twelfth monitoring occasion, i.e., monitoring occasion 12, in the 2nd repetition transmission.

[0347] As Figure 7gAs shown, 12 monitoring occasions are contained in the monitoring time window of the LP-WUS. #1-1 represents the LP-WUS with index 1 in the first type, and #1-2 represents the LP-WUS with index 2 in the first type. #2-1 represents the LP-WUS with index 1 in the second type, and #2-2 represents the LP-WUS with index 2 in the second type. The LP-WUS of #1-1 corresponds to the first monitoring occasion, i.e., monitoring occasion 1, in the 0th repetition transmission; corresponds to the second monitoring occasion, i.e., monitoring occasion 2, in the 1st repetition transmission; and corresponds to the third monitoring occasion, i.e., monitoring occasion 3, in the 2nd repetition transmission. The LP-WUS of #1-2 corresponds to the fourth monitoring occasion, i.e., monitoring occasion 4, in the 0th repetition transmission; corresponds to the fifth monitoring occasion, i.e., monitoring occasion 5, in the 1st repetition transmission; and corresponds to the sixth monitoring occasion, i.e., monitoring occasion 6, in the 2nd repetition transmission. The LP-WUS of #2-1 corresponds to the seventh monitoring occasion, i.e., monitoring occasion 7, in the 0th repetition transmission; corresponds to the eighth monitoring occasion, i.e., monitoring occasion 8, in the 1st repetition transmission; and corresponds to the ninth monitoring occasion, i.e., monitoring occasion 9, in the 2nd repetition transmission. The LP-WUS of #2-2 corresponds to the tenth monitoring occasion, i.e., monitoring occasion 10, in the 0th repetition transmission; corresponds to the eleventh monitoring occasion, i.e., monitoring occasion 11, in the 1st repetition transmission; and corresponds to the twelfth monitoring occasion, i.e., monitoring occasion 12, in the 2nd repetition transmission.

[0348] As Figure 7hAs shown, the monitoring time window of the LP-WUS contains 12 monitoring occasions. #1-1 represents the LP-WUS of 1 in the first type, and #1-2 represents the LP-WUS of 2 in the first type. #2-1 represents the LP-WUS of 1 in the second type, and #2-2 represents the LP-WUS of 2 in the second type. The LP-WUS of #1-1 corresponds to the first monitoring occasion, i.e., monitoring occasion 1, in the 0th repeated transmission; corresponds to the fifth monitoring occasion, i.e., monitoring occasion 5, in the 1st repeated transmission; and corresponds to the ninth monitoring occasion, i.e., monitoring occasion 9, in the 2nd repeated transmission. The LP-WUS of #1-2 corresponds to the second monitoring occasion, i.e., monitoring occasion 2, in the 0th repeated transmission; corresponds to the sixth monitoring occasion, i.e., monitoring occasion 6, in the 1st repeated transmission; and corresponds to the tenth monitoring occasion, i.e., monitoring occasion 10, in the 2nd repeated transmission. The LP-WUS of #2-1 corresponds to the third monitoring occasion, i.e., monitoring occasion 3, in the 0th repeated transmission; corresponds to the seventh monitoring occasion, i.e., monitoring occasion 7, in the 1st repeated transmission; and corresponds to the eleventh monitoring occasion, i.e., monitoring occasion 11, in the 2nd repeated transmission. The LP-WUS of #2-2 corresponds to the fourth monitoring occasion, i.e., monitoring occasion 4, in the 0th repeated transmission; corresponds to the eighth monitoring occasion, i.e., monitoring occasion 8, in the 1st repeated transmission; and corresponds to the twelfth monitoring occasion, i.e., monitoring occasion 12, in the 2nd repeated transmission.

[0349] Therefore, after determining the index of the LP-WUS with the best channel quality based on the first synchronization signal, the terminal can determine the monitoring occasion corresponding to the LP-WUS with the index based on one or more of the transmission number of the LP-WUS, the index of the LP-WUS, the number of repeated transmissions of the LP-WUS, and the identification carried in the LP-WUS, so as to realize the reception of the LP-WUS and improve the network performance of the terminal.

[0350] It should be noted that in each of the above implementation manners, the number of repeated transmissions of the low-power signal is the difference between the total number of transmissions of the low-power signal and 1. For example, when the total number of transmissions of the low-power signal is 2, the low-power signal is considered to be repeated once. That is, the first transmitted low-power signal can be considered as the 0th repeated low-power signal, and the second transmitted low-power signal can be considered as the 1st repeated low-power signal.

[0351] In some embodiments, the number of repeated transmissions of the low-power signal can be the total number of transmissions of the low-power signal. For example, when the total number of transmissions of the low-power signal is 2, the low-power signal is considered to be repeated 2 times. That is, the first transmitted low-power signal can be considered as the first repeated low-power signal, and the second transmitted low-power signal can be considered as the second repeated low-power signal. In this example, P in the formula in each of the above implementations can be replaced by (P-1), and Q can be replaced by (Q-1), as described above, when the first index of the low-power signal in each of the above implementations is changed from 1 to 0, M in the formula is replaced by (M+1).

[0352] It should be noted that each of the embodiments, each of the implementations, each of the steps, or each of the operations provided in the present application can be implemented independently, or in combination, and the present application does not make any limitation in this regard.

[0353] The terminal in the embodiments of the present application can be replaced by a module (for example, a chip, a circuit, or the like) in the terminal, that is, the steps or operations performed by the terminal in the foregoing embodiments can also be performed by the module in the terminal. Correspondingly, the network device in the embodiments of the present application can be replaced by a module (for example, a chip, a circuit, or the like) in the network device, that is, the steps or operations performed by the network device in the foregoing embodiments can also be performed by the module in the network device.

[0354] The method provided in the embodiments of the present application can include more or fewer steps than the textual and graphical descriptions, and the present application does not make any limitation in this regard. The present application does not make any limitation on the execution order of each of the steps or operations in the foregoing embodiments.

[0355] Figure 8 A structural schematic diagram of a communication apparatus is provided for an embodiment of the present application. Figure 8 The apparatus 800 shown can be used to implement each of the steps / operations performed by the terminal in the foregoing method embodiments. As shown in Figure 8 The apparatus 800 can include a receiving module 810 and a processing module 820.

[0356] The receiving module 810 is configured to receive first information, the first information indicating a first transmission number and / or a first symbol index of a first synchronization signal, the first transmission number being a transmission number of the first synchronization signal in a first time length, the first synchronization signal being a synchronization signal received by a low-power receiver of the terminal; and the processing module 820 is configured to determine a first time domain position of the first synchronization signal based on the first information.

[0357] Optionally, the receiving module 810 is further configured to receive second information, the second information indicating the first time domain position; and the processing module 820 is further configured to determine the first time domain position based on the first information and the second information.

[0358] Optionally, the apparatus 800 further includes a sending module 830. The sending module 830 is configured to send third information when the first condition is met, the third information indicating updating the first transmission quantity and / or the index value of the first synchronization signal; the first condition includes one or more of the following: the first channel quality measurement result measured by the low-power receiver is less than or equal to the first threshold and the second channel quality measurement result measured by the main receiver of the terminal is greater than the first threshold; or the low-power receiver does not receive the low-power signal within the second time length and the second channel quality measurement result is greater than the first threshold.

[0359] Optionally, the receiving module 810 is further configured to receive fourth information, the fourth information indicating sending the first synchronization signal.

[0360] Optionally, the sending module 830 is further configured to send fifth information, the fifth information indicating whether to support not sending the first synchronization signal.

[0361] Optionally, the receiving module 810 is further configured to receive the first synchronization signal at the first time domain position.

[0362] It should be understood that the apparatus 800 herein is embodied in the form of functional modules. The term "module" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated or group) and memory that execute one or more software or firmware programs, a combinational logic circuit, and / or other suitable components that provide the described functionality.

[0363] Figure 9 A structural diagram of a communication apparatus is provided for another embodiment of the present application. Figure 9 The apparatus 900 shown can be used to implement the various steps / operations performed by the network device in the foregoing method embodiments. As shown in Figure 9 The apparatus 900 can include a sending module 910.

[0364] The sending module 910 is configured to send first information, the first information indicating a first transmission quantity and / or a first symbol index of a first synchronization signal, the first transmission quantity being a transmission quantity of the first synchronization signal within a first time length, the first synchronization signal being a synchronization signal received by a low-power receiver of a terminal.

[0365] Optionally, the sending module 910 is further configured to send second information, the second information indicating a first time domain position of the first synchronization signal.

[0366] Optionally, the device 900 may further include a receiving module 920. The receiving module 920 is used to receive third information, which indicates an update to the index value of the first transmission quantity and / or the first synchronization signal.

[0367] Optionally, the transmitting module 910 is used to transmit fourth information, which indicates the transmission of the first synchronization signal.

[0368] Optionally, the receiving module 920 is used to receive fifth information, which indicates whether it supports not sending the first synchronization signal.

[0369] It should be understood that the device 900 here is embodied in the form of a functional module. The term "module" here may refer to an ASIC, electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components that support the described functions.

[0370] Figure 10 This is a schematic diagram of the structure of a communication device provided in another embodiment of this application. Figure 10 The apparatus 1000 shown can be used to implement the method executed by a terminal or network device in the foregoing method embodiments.

[0371] like Figure 10 As shown, the device 1000 of this embodiment includes: a memory 1010, a processor 1020, a communication interface 1030, and a bus 1040. The memory 1010, the processor 1020, and the communication interface 1030 are interconnected via the bus 1040.

[0372] The memory 1010 may be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1010 may store programs, and when the programs stored in the memory 1010 are executed by the processor 1020, the processor 1020 is used to perform the various steps executed by the terminal or network device in the aforementioned method embodiments.

[0373] The processor 1020 may be a general-purpose central processing unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, used to execute relevant programs to implement the communication method shown in the embodiments of this application.

[0374] The processor 1020 can also be an integrated circuit chip having a processing capability for signals. In implementation, each step of the communication method shown in the method embodiments of the present application can be completed by the integrated logic circuit of hardware or the instruction in the form of software in the processor 1020.

[0375] The processor 1020 described above can also be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor.

[0376] The steps of the method disclosed in the embodiments of the present application can be directly embodied as hardware code processing for execution, or executed by a combination of hardware and software modules in the code processing. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, or other mature storage medium in the art. The storage medium is located in the storage 1010, and the processor 1020 reads the information in the storage 1010, and combines the hardware to complete the functions required to be executed by the units included in the communication device of the present application. For example, each step / function performed by the terminal or network device in the foregoing method embodiments can be executed.

[0377] Optionally, the storage 1010 and the processor 1020 can be integrated together.

[0378] The communication interface 1030 can use, but is not limited to, a transceiver such as a transceiver to realize the communication between the device 1000 and other devices or devices.

[0379] The bus 1040 can include a path for transmitting information between various components (for example, the storage 1010, the processor 1020, the communication interface 1030) of the device 1000.

[0380] Some embodiments of the present application also provide a computer program product, which, when running on a processor, can implement the method shown in the foregoing embodiments. Some embodiments of the present application also provide a computer readable storage medium, which contains computer instructions, which, when running on a processor, can implement the method shown in the foregoing embodiments.

[0381] It should be noted that the modules or components shown in the above embodiments can be one or more integrated circuits configured to implement the above methods, for example, one or more application specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs), etc. For another example, when a certain module above is implemented in the form of a processing element invoking program code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of invoking program code, such as a controller. For another example, these modules can be integrated together to be implemented in the form of a system-on-a-chip (SOC).

[0382] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware, software modules or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

Claims

1. A communication method, characterized in that, The method includes: Receive first information, the first information indicating a first transmission quantity and / or a first symbol index of a first synchronization signal, the first transmission quantity being the number of transmissions of the first synchronization signal within a first duration, and the first synchronization signal being a synchronization signal received by the low-power receiver of the terminal. Based on the first information, the first time-domain position of the first synchronization signal is determined.

2. The method according to claim 1, characterized in that, The method further includes: Receive second information, which indicates the first time-domain location; Determining the first time-domain position of the first synchronization signal based on the first information includes: Based on the first information and the second information, the first time domain location is determined.

3. The method according to claim 1 or 2, characterized in that, When the subcarrier spacing of the first synchronization signal and the synchronization signal block SSB is the same, and the operating frequency of the first synchronization signal and the operating frequency of the SSB belong to the same frequency range, the first symbol index is related to at least one of the following: the second symbol index of the SSB, the operating frequency of the first synchronization signal, the operating frequency of the SSB, the number of resources occupied by the first synchronization signal in the time domain, or the number of resources occupied by the SSB in the time domain.

4. The method according to any one of claims 1 to 3, characterized in that, The first time-domain position is located in the first half of the system frame, or the first time-domain position is located in the second half of the system frame.

5. The method according to any one of claims 1 to 4, characterized in that, The first number of transmissions is related to the first time-domain location and / or the group to which the terminal belongs.

6. The method according to any one of claims 1 to 5, characterized in that, When the subcarrier spacing of the first synchronization signal and the SSB is the same, and the operating frequency of the first synchronization signal and the operating frequency of the SSB belong to the same frequency range, the first transmission quantity is less than or equal to the second transmission quantity, and the second transmission quantity is the number of transmissions of the SSB within the first duration.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: When the first condition is met, a third message is sent, the third message indicating that the index value of the first transmission quantity and / or the first synchronization signal should be updated; The first condition includes one or more of the following: The first channel quality measurement result obtained by the low-power receiver is less than or equal to a first threshold, and the second channel quality measurement result obtained by the main receiver of the terminal is greater than the first threshold; or The low-power receiver does not receive a low-power signal within the second time period and the second channel quality measurement result is greater than the first threshold.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: Receive a fourth message, which instructs the transmission of the first synchronization signal.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Send a fifth message, which indicates whether it is supported not to send the first synchronization signal.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: The low-power receiver of the terminal receives the first synchronization signal at the first time domain location.

11. A communication method, characterized in that, The method includes: Send a first message, the first message indicating a first transmission quantity and / or a first symbol index of a first synchronization signal, the first transmission quantity being the number of transmissions of the first synchronization signal within a first duration, and the first synchronization signal being a synchronization signal received by the low-power receiver of the terminal.

12. The method according to claim 11, characterized in that, The method further includes: Send a second message, which indicates the first time domain position of the first synchronization signal.

13. The method according to claim 12, characterized in that, The first time-domain position is located in the first half of the system frame, or the first time-domain position is located in the second half of the system frame.

14. The method according to any one of claims 11 to 13, characterized in that, When the subcarrier spacing of the first synchronization signal and the synchronization signal block SSB is the same, and the operating frequency of the first synchronization signal and the operating frequency of the SSB belong to the same frequency range, the first symbol index is related to at least one of the following: the second symbol index of the SSB, the operating frequency of the first synchronization signal, the operating frequency of the SSB, the number of resources occupied by the first synchronization signal in the time domain, or the number of resources occupied by the SSB in the time domain.

15. The method according to claim 12 or 13, characterized in that, The first number of transmissions is related to the first time-domain location and / or the group to which the terminal belongs.

16. The method according to any one of claims 11 to 15, characterized in that, When the subcarrier spacing of the first synchronization signal and the SSB is the same, and the operating frequency of the first synchronization signal and the operating frequency of the SSB belong to the same frequency range, the first transmission quantity is less than or equal to the second transmission quantity, and the second transmission quantity is the number of transmissions of the SSB within the first duration.

17. The method according to any one of claims 11 to 16, characterized in that, The method further includes: Receive third information, which indicates updating the index value of the first transmission quantity and / or the first synchronization signal.

18. The method according to any one of claims 11 to 17, characterized in that, The method further includes: Send a fourth message, which instructs the transmission of the first synchronization signal.

19. The method according to any one of claims 11 to 18, characterized in that, The method further includes: Receive the fifth information, which indicates whether it is supported not to send the first synchronization signal.

20. A communication device, characterized in that, It includes various functional modules for implementing the method as claimed in any one of claims 1 to 10 or any one of claims 11 to 19.

21. A communication device, characterized in that, include: A processor coupled to a memory for storing a computer program, which, when invoked by the processor, causes the apparatus to perform the method as claimed in any one of claims 1 to 10 or any one of claims 11 to 19.

22. A computer program product, characterized in that, It includes computer program code that, when run on a computer, causes the computer to implement the method as claimed in any one of claims 1 to 10 or any one of claims 11 to 19.

23. A computer-readable medium, characterized in that, The computer-readable medium stores program code for computer execution, the program code including instructions for performing the method as claimed in any one of claims 1 to 10 or any one of claims 11 to 19.

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