WO2023051321A1 - 信号传输的方法和装置 - Google Patents
信号传输的方法和装置 Download PDFInfo
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- WO2023051321A1 WO2023051321A1 PCT/CN2022/119930 CN2022119930W WO2023051321A1 WO 2023051321 A1 WO2023051321 A1 WO 2023051321A1 CN 2022119930 W CN2022119930 W CN 2022119930W WO 2023051321 A1 WO2023051321 A1 WO 2023051321A1
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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Definitions
- the present application relates to the communication field, and more specifically, to a signal transmission method and device.
- the terminal device can receive a wake-up signal through a separate small low-power circuit, such as a wake up receiver (WUR), and the main receiver can be in a deep sleep state.
- a wake up receiver WUR
- the terminal device detects the wake-up signal through the WUR
- the terminal device triggers the wake-up of the main receiver.
- the terminal device can perform a paging receiving process through the main receiver, such as receiving a paging message. Therefore, how to correctly receive the wake-up signal is particularly important.
- the present application provides a signal transmission method and device, so that the terminal equipment can perform time synchronization through the received synchronization signal, and then can correctly receive the wake-up signal, and avoid the terminal equipment from being unable to correctly receive the wake-up signal due to time asynchrony.
- a signal transmission method is provided, and the method may be executed by a terminal device, or may also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited thereto.
- a component such as a chip or a circuit
- the following uses execution by a terminal device as an example for description.
- the method may include: the terminal device determines the period of the synchronization signal; the terminal device periodically receives the synchronization signal according to the period of the synchronization signal, using a first frequency resource, wherein the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used to Information indicating one or more end devices that need to receive paging.
- the terminal device periodically receives the synchronization signal, and the terminal device can perform time synchronization through the received synchronization signal, and then can correctly receive the wake-up signal.
- the terminal device periodically receives the synchronization signal, which can reduce the resource overhead of the synchronization signal.
- a network device as a central control node, so each terminal device can perform time synchronization with the same network device.
- each terminal device in the network can share the same synchronization signal, reducing the resource overhead of synchronization signals.
- the network device periodically sends the synchronization signal on the wake-up link, that is, the synchronization signal does not need to be sent channel, but periodically sent separately.
- data information does not necessarily follow the synchronization signal. Therefore, the network device does not need to send a synchronization signal when sending data information, but can send a synchronization signal according to the cycle of the synchronization signal, thereby enabling the terminal device to complete time synchronization before receiving the wake-up signal.
- the terminal device can receive the synchronization signal depends on whether the current network device has sent data, and the time delay for the terminal device to obtain synchronization after switching from the main link to the wake-up link cannot be guaranteed.
- the terminal device switches from the main link to the wake-up link, it can quickly acquire time synchronization by using the synchronization signal sent periodically.
- a period of the synchronization signal is associated with a transmission parameter of the wake-up signal.
- the transmission parameters of the wake-up signal include time domain resource length or subcarrier spacing.
- the transmission parameter of the wake-up signal is received by the terminal device through the second module.
- the terminal device receives system information from the network device, where the system information includes transmission parameters of the wake-up signal.
- the period of the synchronization signal is associated with the transmission parameter of the wake-up signal, so that the corresponding period can be determined based on the transmission parameter of the wake-up signal.
- the transmission parameter of the wake-up signal includes a time-domain resource length
- the time-domain resource length includes a first time-domain resource length and a second time-domain resource length
- the first time-domain resource length of the synchronization signal One cycle is associated with the first time domain resource length
- the second cycle of the synchronization signal is associated with the second time domain resource length
- the first time domain resource length is smaller than the second time domain resource length
- the first cycle is smaller than the second cycle.
- a terminal device completes synchronization with a synchronization signal, it does not perform synchronization again before receiving the next synchronization signal. Due to the limited precision of the local clock of the receiver of the terminal equipment, the time offset between the terminal equipment and the network side will become larger and larger between two synchronization signals.
- the wake-up signal is modulated by a certain modulation method (such as OOK), the demodulation performance of the wake-up signal is affected by the length of the time-domain resource (such as the length of the symbol). The longer the length of the time-domain resource, the greater the tolerance to residual time skew.
- the transmission parameter of the wake-up signal includes a subcarrier interval
- the subcarrier interval includes a first subcarrier interval and a second subcarrier interval
- the first cycle of the synchronization signal and the second A subcarrier interval is associated
- the second period of the synchronization signal is associated with the second subcarrier interval
- the first subcarrier interval is greater than the second subcarrier interval
- the first period is smaller than the second period.
- the period of the synchronization signal is configured by the network device, or the period of the synchronization signal is predefined by a standard.
- the network device can flexibly select an appropriate period T, so as to control the resource overhead of the synchronization signal. If the period of the synchronization signal is predefined (such as predefined by the standard), the network device or terminal device can determine the period of the synchronization signal based on the predefined (such as predefined by the standard), which reduces the inconvenience caused by the period of the network device notifying the synchronization signal. Signaling overhead.
- the method further includes: the terminal device receives first configuration information, and the first configuration information is used to configure the period of the synchronization signal .
- the period of the synchronization signal is configured by the network device, and the network device can send the period of the synchronization signal to the terminal device, and then the terminal device can know the period of the synchronization signal, and periodically receive the synchronization signal according to the period of the synchronization signal.
- the method further includes: the terminal device receives second configuration information, and the second configuration information is used to configure the pattern pattern of the synchronization signal; the terminal device uses the period of the synchronization signal to use Periodically receiving the synchronization signal by the first frequency resource includes: the terminal device receives the synchronization signal by using the first frequency resource according to the period of the synchronization signal and the pattern of the synchronization signal.
- the flexibility of the period of the synchronization signal can be improved. For example, if the period of the synchronization signal is predefined by the standard, once the transmission parameters are determined, the period of the synchronization signal will be determined accordingly, which may limit the deployment of the first link in the network. By configuring the pattern of the synchronization signal, the network device can flexibly configure the actual sending period of the synchronization signal, which improves flexibility.
- the method further includes: the terminal device uses the first frequency resource to receive the first signal and/or send the second signal at the first time domain position, and the pattern representation of the synchronization signal The time domain positions for sending the synchronization signal do not include the first time domain position.
- the first signal includes one or more of the following: synchronization signal block SSB, physical downlink control channel PDCCH, physical downlink shared channel PDSCH, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS, positioning reference signal PRS, demodulation reference signal DMRS.
- the second signal includes one or more of the following: a demodulation reference signal DMRS, a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.
- DMRS demodulation reference signal
- PUSCH physical uplink shared channel
- PUCCH physical uplink control channel
- SRS sounding reference signal
- the modulation manner of the first signal is OFDM modulation or DFT-s-OFDM modulation.
- the modulation manner of the second signal is OFDM modulation or DFT-s-OFDM modulation.
- the terminal device receives the wake-up signal and synchronization signal on the first link (the frequency corresponding to the first link includes the first frequency resource), the resource ratio of the first link can be reduced, and the first link can be made
- Link signals (such as wake-up signals and synchronization signals) are time-division multiplexed (time-division multiplexing, TDM) with other signals (such as the first signal and/or the second signal), that is, at the same frequency position, the first signal is received for a period of time.
- TDM time-division multiplexing
- the terminal device includes a first module and a second module, the terminal device receives the synchronization signal and the wake-up signal through the first module, and the terminal device receives the first signal through the second module and/or send a second signal.
- the terminal device can receive the synchronization signal and the wake-up signal through the first module, and receive and/or send other signals through the second module, so that the synchronization signal and the wake-up signal can be compared with existing signals (such as the first signal or the second Two signals) symbol boundary alignment can reduce the level of interference.
- the terminal device uses the first frequency resource to periodically receive the synchronization signal according to the period of the synchronization signal, including: the terminal device uses the first frequency resource according to the period of the synchronization signal The resource receives a synchronization signal at a first moment, the synchronization signal is used to indicate the data rate of the wake-up signal in a first period, and the first period is located after the first moment.
- the data rate of the wake-up signal is obtained through the synchronization signal.
- the length of the synchronization signal is used to indicate the data rate of the wake-up signal within the first period.
- the length of the synchronization signal can be associated with the data rate of the wake-up signal, and the terminal device can learn the data rate of the wake-up signal in the first period through the length of the synchronization signal. Therefore, the terminal device can blindly detect the length of the synchronization signal, thereby judging the data rate of the subsequent wake-up signal, reducing the signaling overhead caused by the network device notifying the data rate of the wake-up signal.
- the synchronization signal includes first indication information, and the first indication information is used to indicate the data rate of the wake-up signal within the first period.
- the synchronization signal may also include first indication information, which is used to indicate the data rate of the wake-up signal within a later period of time (such as within the first period of time) .
- first indication information which is used to indicate the data rate of the wake-up signal within a later period of time (such as within the first period of time) .
- the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, and the length of the first synchronization signal is used to indicate the wake-up signal within the first period
- the data rate is the first data rate
- the length of the second synchronization signal is used to indicate the data rate of the wake-up signal in the first period is the second data rate
- the length of the first synchronization signal is less than the length of the second synchronization signal
- the first data rate is higher than the second data rate.
- synchronization signals of different lengths may correspond to different data rates. For example, the longer the length of the synchronization signal, the higher the data rate of the wake-up signal indicated by it.
- the first time period is located after the first moment and before the second moment, and the second moment is the i-th synchronization signal received by the terminal device after the first moment , i is an integer greater than or equal to 1.
- i 1.
- the method further includes: the terminal device uses the first frequency resource to receive a wake-up signal, and the wake-up signal includes second indication information, where the second indication information is used to indicate that the wake-up signal data rate.
- the data rate of the wake-up signal is obtained through the wake-up signal.
- the second indication information is specifically used to indicate the data rate of other information in the wake-up signal except the second indication information, and the data rate of the second indication information is the network device configured or predefined.
- the second indication information is located at the beginning of a wake-up signal (such as the starting position, and such as the position before the paging information).
- the length of the synchronization signal includes a length of the first synchronization signal and a length of the second synchronization signal, and the length of the first synchronization signal is smaller than the length of the second synchronization signal.
- a period of a synchronization signal is smaller than a period of a second synchronization signal.
- the synchronization signal can include multiple signals of different lengths, such as the first synchronization signal and the second synchronization signal, so that not only can the synchronization signal of an appropriate length be selected for transmission according to the actual situation, but also can be used for different channel states , serving terminal devices in different channel states.
- the period of the second synchronization signal is an integer multiple of the period of the first synchronization signal
- the interval between the terminal device receiving the second synchronization signal and the terminal device receiving the first synchronization signal is The time interval is the same as the period of the first synchronization signal.
- a waveform of the synchronization signal is the same as that of the wake-up signal, and/or a modulation manner of the synchronization signal is the same as a modulation manner of the wake-up signal.
- the modulation mode of the synchronization signal and the modulation mode of the wake-up signal are on-off keying OOK, and/or, the waveform of the synchronization signal and/or the waveform of the wake-up signal is OOK .
- the method further includes: the terminal device uses the first frequency resource to receive a wake-up signal from the network device, and the wake-up signal is used to indicate one or more
- the information of the terminal device includes the terminal device; the terminal device receives the first information from the network device and/or initiates random access, wherein the first information includes one or more of the following information: paging downlink control information DCI, paging message paging message, paging advance indication PEI.
- the terminal device initiates random access, including: the terminal device sends a random access preamble to the network device.
- the terminal device receiving the first information from the network device and/or initiating random access includes: the terminal device uses the second frequency resource to receive the first information from the network device information and/or initiate random access.
- the terminal device includes a first module and a second module, the terminal device receives the synchronization signal and the wake-up signal through the first module, and the terminal device receives the first information through the second module and/or initiate random access.
- the terminal device receives the synchronization signal and the wake-up signal through the first link, and the frequency resource corresponding to the first link includes the first frequency resource.
- the terminal device receives the first information from the network device and/or initiates random access through the second link, and the frequency resources corresponding to the second link include the first Two frequency resources.
- the terminal device is in a first state (or adopts a first mode), and receives a synchronization signal and a wake-up signal.
- the terminal device is in the second state (or adopts the second mode), receives the first information and/or initiates random access.
- a signal transmission method is provided, and the method may be executed by a terminal device, or may also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited thereto.
- a component such as a chip or a circuit
- the following uses execution by a terminal device as an example for description.
- the method may include: the network device determines the period of the synchronization signal; the network device periodically sends the synchronization signal using a first frequency resource according to the period of the synchronization signal, wherein the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used for Information indicating one or more end devices that need to receive paging.
- the network device periodically sends a synchronization signal, and the terminal devices in the network can perform time synchronization through the received synchronization signal, and then can correctly receive the wake-up signal.
- the terminal device periodically receives the synchronization signal, which can reduce the resource overhead of the synchronization signal.
- a period of the synchronization signal is associated with a transmission parameter of the wake-up signal.
- the transmission parameters of the wake-up signal include time domain resource length or subcarrier spacing.
- the transmission parameter of the wake-up signal is received by the terminal device through the second module.
- the method further includes: the network device broadcasts system information, where the system information includes transmission parameters of the wake-up signal.
- the network device can broadcast the transmission parameter of the wake-up signal, so that each terminal device in the network can receive the transmission parameter of the wake-up signal.
- the transmission parameter of the wake-up signal includes a time-domain resource length
- the time-domain resource length includes a first time-domain resource length and a second time-domain resource length
- the first time-domain resource length of the synchronization signal One cycle is associated with the first time domain resource length
- the second cycle of the synchronization signal is associated with the second time domain resource length
- the first time domain resource length is smaller than the second time domain resource length
- the first cycle is smaller than the second cycle.
- the transmission parameter of the wake-up signal includes a subcarrier interval
- the subcarrier interval includes a first subcarrier interval and a second subcarrier interval
- the first cycle of the synchronization signal and the second A subcarrier interval is associated
- the second period of the synchronization signal is associated with the second subcarrier interval
- the first subcarrier interval is greater than the second subcarrier interval
- the first period is smaller than the second period.
- the period of the synchronization signal is configured by the network device, or the period of the synchronization signal is predefined by a standard.
- the method further includes: the network device sends first configuration information, and the first configuration information is used to configure the period of the synchronization signal .
- the method further includes: the network device sends second configuration information, and the second configuration information is used to configure the pattern pattern of the synchronization signal; the network device uses Sending the synchronization signal periodically by the first frequency resource includes: the network device sends the synchronization signal by using the first frequency resource according to the period of the synchronization signal and the pattern of the synchronization signal.
- the method further includes: the network device uses the first frequency resource to send the first signal and/or receive the second signal at the first time domain position, and the pattern representation of the synchronization signal The time domain positions for sending the synchronization signal do not include the first time domain position.
- the first signal includes one or more of the following: synchronization signal block SSB, physical downlink control channel PDCCH, physical downlink shared channel PDSCH, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS, positioning reference signal PRS, demodulation reference signal DMRS.
- the second signal includes one or more of the following: a demodulation reference signal DMRS, a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.
- DMRS demodulation reference signal
- PUSCH physical uplink shared channel
- PUCCH physical uplink control channel
- SRS sounding reference signal
- the modulation manner of the first signal is OFDM modulation or DFT-s-OFDM modulation.
- the modulation manner of the second signal is OFDM modulation or DFT-s-OFDM modulation.
- the network device sends a wake-up signal and a synchronization signal on the first link (the frequency corresponding to the first link includes the first frequency resource), the resource ratio of the first link can be reduced, and the first link can be made
- the signal of the link (such as wake-up signal and synchronization signal) is time-division multiplexed with other signals (such as the first signal and/or the second signal), that is, at the same frequency position, the signal of the first link is sent for a period of time, and the other Time to send other signals (such as the first signal).
- the network device includes a first module and a second module, the network device sends a synchronization signal and a wake-up signal through the first module, and the network device sends the first signal through the second module and/or receive a second signal.
- the network device can send the synchronization signal and the wake-up signal through the first module, and receive and/or send other signals through the second module, so that the synchronization signal and the wake-up signal can be compared with existing signals (such as the first signal or the second Two signals) symbol boundary alignment can reduce the level of interference.
- the network device uses the first frequency resource to periodically send the synchronization signal according to the period of the synchronization signal, including: the network device uses the first frequency resource according to the period of the synchronization signal The resource is to send a synchronization signal at a first moment, the synchronization signal is used to indicate the data rate of the wake-up signal in a first period, and the first period is located after the first moment.
- the network device indicates to the terminal device the data rate of the wake-up signal within a certain period of time (for example, within the first period of time) through the synchronization signal.
- the length of the synchronization signal is used to indicate the data rate of the wake-up signal within the first period.
- the length of the synchronization signal can be associated with the data rate of the wake-up signal, and the network device can indicate the data rate of the wake-up signal in a later period of time (such as within the first period of time) through the length of the synchronization signal, so that the terminal device can pass the synchronization
- the length of the signal can determine the data rate of the wake-up signal in the first time period. Therefore, the terminal device can blindly detect the length of the synchronization signal, thereby judging the data rate of the subsequent wake-up signal, reducing the signaling overhead caused by the network device notifying the data rate of the wake-up signal.
- the synchronization signal includes first indication information, and the first indication information is used to indicate a data rate of the wake-up signal within the first time period.
- the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, and the length of the first synchronization signal is used to indicate the wake-up signal within the first period
- the data rate is the first data rate
- the length of the second synchronization signal is used to indicate the data rate of the wake-up signal in the first period is the second data rate
- the length of the first synchronization signal is less than the length of the second synchronization signal
- the first data rate is higher than the second data rate.
- the first time period is located after the first moment and before the second moment, and the second moment is the i-th synchronization signal sent by the network device after the first moment , i is an integer greater than or equal to 1.
- i 1.
- the method further includes: the network device sends a wake-up signal using the first frequency resource, and the wake-up signal includes second indication information, where the second indication information is used to indicate the wake-up signal data rate.
- the second indication information is specifically used to indicate the data rate of other information in the wake-up signal except the second indication information, and the data rate of the second indication information is the network device configured or predefined.
- the second indication information is located at the beginning of a wake-up signal (such as the starting position, and such as the position before the paging information).
- the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, the length of the first synchronization signal is smaller than the length of the second synchronization signal, and the length of the second synchronization signal is A period of a synchronization signal is smaller than a period of a second synchronization signal.
- the period of the second synchronization signal is an integer multiple of the period of the first synchronization signal
- the period between the network device sending the second synchronization signal and the network device sending the first synchronization signal is The time interval is the same as the period of the first synchronization signal.
- the waveform of the synchronization signal is the same as that of the wake-up signal, and/or the modulation manner of the synchronization signal is the same as that of the wake-up signal.
- the modulation mode of the synchronization signal and the modulation mode of the wake-up signal are on-off keying OOK, and/or, the waveform of the synchronization signal and/or the waveform of the wake-up signal is OOK .
- the method further includes: the network device sends a wake-up signal using the first frequency resource, and the wake-up signal is used to indicate information of one or more terminal devices that need to receive paging , one or more terminal devices include a first terminal device; the network device sends first information to the first terminal device and/or receives a random access preamble from the first terminal device, wherein the first information includes one of the following or Multiple pieces of information: paging downlink control information DCI, paging message, paging advance indication PEI.
- the network device sends a wake-up signal using the first frequency resource, and the wake-up signal is used to indicate information of one or more terminal devices that need to receive paging , one or more terminal devices include a first terminal device; the network device sends first information to the first terminal device and/or receives a random access preamble from the first terminal device, wherein the first information includes one of the following or Multiple pieces of information: paging downlink control information DCI, paging message, paging advance indication PEI
- the network device sending the first information to the first terminal device and/or receiving the random access preamble from the first terminal device includes: the network device uses the second The frequency resource is used to send the first information to the first terminal device and/or receive a random access preamble from the first terminal device.
- the network device includes a first module and a second module, the network device sends a synchronization signal and a wake-up signal through the first module, and the network device sends a synchronization signal and a wake-up signal to the first terminal through the second module
- the device sends first information and/or receives a random access preamble from the first terminal device.
- a communication device configured to execute the method in any possible implementation manner of the first aspect or the second aspect above.
- the apparatus may include a unit and/or module for executing the method in any possible implementation manner of the first aspect or the second aspect, such as a processing unit and/or a communication unit.
- the apparatus is a communication device (such as a terminal device, and also a network device).
- the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
- the transceiver may be a transceiver circuit.
- the input/output interface may be an input/output circuit.
- the apparatus is a chip, a chip system, or a circuit used in a communication device (such as a terminal device, or a network device).
- a communication device such as a terminal device, or a network device.
- the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit, etc.
- the processing unit may be at least one processor, processing circuit or logic circuit, etc.
- a communication device which includes: at least one processor, configured to execute a computer program or instruction stored in a memory, so as to execute the method in any possible implementation manner of the first aspect or the second aspect above .
- the apparatus further includes a memory for storing computer programs or instructions.
- the device further includes a communication interface, through which the processor reads the computer program or instructions stored in the memory.
- the apparatus is a communication device (such as a terminal device, and also a network device).
- the apparatus is a chip, a chip system, or a circuit used in a communication device (such as a terminal device, or a network device).
- the present application provides a processor configured to execute the method provided in the foregoing aspects.
- the processor's output and reception, input and other operations can also be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.
- a computer-readable storage medium where the computer-readable medium stores program code for execution by a device, and the program code includes a method for executing any possible implementation manner of the above-mentioned first aspect or second aspect. method.
- a computer program product including instructions is provided, and when the computer program product is run on a computer, the computer is made to execute the method in any possible implementation manner of the first aspect or the second aspect above.
- a communication system including the aforementioned terminal device and network device.
- Fig. 1 shows a schematic diagram of a wireless communication system 100 applicable to the embodiment of the present application.
- Fig. 2 shows a schematic diagram of a terminal device receiving a wake-up signal by using a wake-up circuit.
- Fig. 3 shows a schematic diagram of a waveform when the wake-up signal is modulated by OOK.
- FIG. 4 shows a schematic diagram of a waveform of a signal after passing through a channel.
- Fig. 5 shows a schematic diagram of sending a synchronization signal.
- FIG. 6 shows a schematic diagram of a signal transmission method 600 provided by an embodiment of the present application.
- Fig. 7 shows a schematic diagram of synchronization signal transmission applicable to the embodiment of the present application.
- Fig. 8 shows a schematic diagram of synchronization signal and NR signal transmission applicable to the embodiment of the present application.
- FIG. 9 shows a schematic diagram applicable to Example 1 in Mode 1.
- FIG. 10 shows a schematic diagram applicable to Example 2 in Mode 1.
- FIG. 11 shows a schematic diagram applicable to mode 2.
- Fig. 12 shows a schematic diagram of periodic sending of the first synchronization signal and the second synchronization signal.
- Fig. 13 shows another schematic diagram of periodic sending of the first synchronization signal and the second synchronization signal.
- FIG. 14 shows a schematic diagram of a signal transmission method 1400 provided by an embodiment of the present application.
- Fig. 15 is a schematic block diagram of a communication device provided by an embodiment of the present application.
- Fig. 16 is a schematic block diagram of another communication device provided by an embodiment of the present application.
- Fig. 17 is a schematic block diagram of another communication device provided by an embodiment of the present application.
- the technical solution provided by this application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) or new radio (new radio, NR) system, long term evolution (long term evolution, LTE) system, LTE frequency division Duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, etc.
- 5G fifth generation
- NR new radio
- long term evolution long term evolution
- LTE long term evolution
- LTE frequency division Duplex frequency division duplex
- FDD frequency division duplex
- TDD time division duplex
- the technical solution provided by this application can also be applied to device to device (device to device, D2D) communication, vehicle to everything (vehicle-to-everything, V2X) communication, machine to machine (machine to machine, M2M) communication, machine type Communication (machine type communication, MTC), and Internet of things (internet of things, IoT) communication system or other communication systems.
- D2D device to device
- V2X vehicle-to-everything
- M2M machine to machine
- M2M machine type Communication
- MTC machine type communication
- IoT Internet of things
- the terminal equipment in the embodiment of the present application may also be referred to as user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communication device, user agent, or user device.
- user equipment user equipment
- UE user equipment
- access terminal subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communication device, user agent, or user device.
- a terminal device may be a device that provides voice/data to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
- some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocol , SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDA), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, Wearable devices, terminal devices in a 5G network, or terminal devices in a future evolving public land mobile network (PLMN), etc., are not limited in this
- the terminal device may also be a wearable device.
- Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
- a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
- Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
- the device for realizing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to realize the function, such as a chip system or a chip, and the device may be installed in the terminal device.
- the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
- the network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station.
- the network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network.
- radio access network radio access network, RAN node (or device) that connects a terminal device to a wireless network.
- the base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), primary station, secondary station, multi-standard wireless (motor slide retainer, MSR) node, home base station, network controller, access point Ingress node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), radio frequency Head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc.
- NodeB Node B
- eNB evolved base station
- next generation NodeB next generation NodeB, gNB
- relay station Access point
- transmission point transmission
- a base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.
- a base station may also refer to a communication module, a modem or a chip configured in the aforementioned equipment or device.
- the base station can also be a mobile switching center, a device that assumes the function of a base station in D2D, V2X, and M2M communications, a network-side device in a 6G network, and a device that assumes the function of a base station in a future communication system.
- Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
- Base stations can be fixed or mobile.
- a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station.
- a helicopter or drone may be configured to serve as a device in communication with another base station.
- the network device mentioned in the embodiment of the present application may be a device including CU, or DU, or a device including CU and DU, or a control plane CU node (central unit-control plane, CU -CP)) and the user plane CU node (central unit-user plane (CU-UP) of the user plane) and the equipment of the DU node.
- CU central unit-control plane
- CU-UP central unit-user plane
- Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air.
- the scenarios where the network device and the terminal device are located are not limited.
- FIG. 1 Firstly, a brief introduction of the network architecture applicable to this application is made in conjunction with FIG. 1 , as follows.
- the wireless communication system 100 may include at least one network device, such as the network device 110 shown in Figure 1, and the wireless communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in Figure 1 . Both the network device and the terminal device can be configured with multiple antennas, and the network device and the terminal device can communicate using the multi-antenna technology.
- the network device when the network device communicates with the terminal device, the network device may manage one or more cells, and there may be an integer number of terminal devices in one cell.
- the network device 110 and the terminal device 120 form a single-cell communication system, and the cell is denoted as cell #1 without loss of generality.
- the network device 110 may be a network device in cell #1, or, the network device 110 may serve a terminal device (such as the terminal device 120) in cell #1.
- a cell may be understood as an area within the wireless signal coverage of the network device.
- FIG. 1 is only a simplified schematic diagram for easy understanding, and the wireless communication system 100 may also include other network devices or other terminal devices, which are not shown in FIG. 1 .
- the process of receiving paging by the terminal device includes: when the terminal device is in the idle state or inactive state, calculate and obtain a paging frame (paging frame, PF) according to its own identifier (identifier, ID) (UE ID) ) and the location of a paging occasion (PO) in a PF, where paging is received in the PO.
- a paging frame paging frame, PF
- identifier, ID identifier
- PO paging occasion
- the same receiving module (or receiver, or receiving circuit) is used regardless of whether the terminal device performs the process of receiving paging in the idle state or inactive state, or when the terminal device receives data in the connected state.
- the module that completes these functions (or performs related steps) is called a main circuit. It can be understood that the main circuit is only named for distinction, and its specific name does not limit the protection scope of the present application. For example, without loss of generality, the main circuit can also be described as a second circuit. The main circuit is described uniformly below.
- the signal received by the terminal device using the main circuit can be said to be transmitted on the link (referred to as the second link for distinction), where the second link represents a connection relationship between the terminal device and the network device, which is A logical concept, not a physical entity.
- the second link may also be referred to as the main link, which is collectively described as the second link below for the convenience of description.
- the power consumption is relatively high.
- a terminal device When the terminal equipment uses the main circuit to receive paging, the power consumption is relatively high.
- a terminal device when a terminal device receives paging, it first needs to use the receiving module of the main circuit to receive downlink signals, and then the terminal device also needs to perform blind detection on the physical downlink control channel (PDCCH) to check the received physical downlink control channel (PDCCH).
- shared channel physical downlink shared channel, PDSCH
- the reference power consumption or static power consumption during its operation is relatively high.
- the terminal device can use a separate low-power small circuit to receive the wake up signal/radio (WUS/WUR).
- the wake-up signal is used to indicate information related to paging, and the information related to paging may include, for example: whether a terminal device or a group of terminal devices is paged.
- the small circuit with low power consumption can be implemented with a single small circuit or chip with a simple structure, and its power consumption is low.
- the small low-power circuit may be called a wake up receiver (wake up receiver, WUR), or may also be called a wake-up circuit, or may also be called a low-power circuit, and so on.
- WUR wake up receiver
- the small circuit with low power consumption is called a wake-up circuit.
- the wake-up circuit is only named for distinction, and its specific name does not limit the protection scope of the present application.
- the wake-up circuit can also be described as the first circuit. In the following, for the convenience of explanation, they are collectively described as a wake-up circuit.
- the signal received by the terminal device using the wake-up circuit can be said to be transmitted on a link (referred to as the first link for distinction), where the first link represents a connection relationship between the terminal device and the network device , is a logical concept, not a physical entity. It should also be understood that the naming of the wake-up signal is only an example, and the present application does not limit the naming thereof.
- a wake-up signal is mainly used to represent a signal related to paging, and it is not limited that all signals transmitted on the first link are wake-up signals.
- the synchronization signal can also be transmitted through the first link, that is, the signal transmitted on the first link can include a synchronization signal and a wake-up signal, wherein the synchronization signal can be used by the terminal device to perform time synchronization based on the synchronization signal, wake up
- the signal may be used to indicate paging related information.
- FIG. 2 shows a schematic diagram of a terminal device receiving a wake-up signal through a wake-up circuit.
- the wake-up signal is detected by the wake-up circuit, and the wake-up signal may carry paging-related indication information.
- the terminal device uses the wake-up circuit to receive signals, if the terminal device does not detect the wake-up signal associated with itself, it will continue to use the wake-up circuit to receive signals, and the main circuit can be in the off state (or sleep state); if the terminal device detects a signal related to itself
- the associated wake-up signal triggers the wake-up of the main circuit, that is, the main circuit is in/switched to an on state (or called a working state, or called an active state).
- the terminal device can perform the process of receiving paging, for example, the terminal device receives the paging PDCCH, and receives the paging PDSCH after its corresponding PO detects the paging PDCCH.
- FIG. 2 is mainly an exemplary illustration of an example in which the wake-up signal carries part of the paging-related information (for example, part of the UE ID of the paged terminal device, or the device group ID of the paged terminal device, etc.). , which is not restricted.
- the wake-up signal can also carry all information related to paging (such as the complete UE ID of the paged terminal device). In this case, after the main circuit is turned on, random access can be initiated. It is understood that no limitation is imposed hereon. If the wake-up signal carries all information related to paging, the information related to paging can also be received after the main circuit is turned on.
- the wake-up signal can be modulated by on off key (OOK), and the corresponding wake-up circuit can receive the wake-up signal by using an envelope detection method.
- OOK on off key
- FIG. 3 shows a schematic diagram of a waveform when the wake-up signal is modulated by OOK.
- each bit may correspond to a symbol (symbol). Equivalently, a symbol can also be called a chip (chip), and can also be called other names, and there is no limitation here.
- a symbol can also be called a chip (chip), and can also be called other names, and there is no limitation here.
- the bit is 1, a signal is sent within the symbol length (that is, the signal transmission power within the symbol length is not 0).
- the bit is 0, no signal is sent within the symbol length (that is, the signal transmission power within the symbol length is 0).
- the waveform shown in FIG. 3 can represent 1010 four bits.
- FIG. 4 shows a schematic diagram of a waveform of a signal after passing through a channel.
- the terminal device may compare the received signal level value with a threshold (the threshold is shown by the dotted line in FIG. 4 ). For example, if the signal level value received by the terminal device is greater than the threshold, it means that the signal corresponds to 1; if the signal level value received by the terminal device is smaller than the threshold, it means that the signal corresponds to 0.
- the terminal device uses the wake-up circuit to receive the wake-up signal, in order to correctly receive the wake-up signal, it needs to acquire the time synchronization of the first link. That is, the terminal device can obtain the boundary position of a symbol, and select the time position for judging whether the signal corresponds to 0 or to 1 according to the boundary position. For example, the terminal device can use the level value at the middle position of the symbol to determine whether the signal corresponds to 0 or 1.
- time drift may occur due to the limited accuracy of the local clock of the end device. If the first link does not provide the synchronization function, after the terminal device works on the first link for a period of time, it is likely that the time of the terminal device and the network device will not be synchronized (that is, the symbol boundary position considered by the terminal device and the network device Inconsistent), thus affecting signal reception.
- FIG. 5 shows a schematic diagram of sending a synchronization signal.
- the synchronization signal that is, WUR-Sync in Figure 5
- the data part that is, WUR-Data in Figure 5
- FIG. 5 is only an exemplary illustration, and the present application does not limit the specific frame structure of the wake-up signal.
- each data transmission can have a synchronous signal that can be referred to, which is beneficial to data reception.
- synchronous signal can be referred to, which is beneficial to data reception. But for cellular networks, it includes the following features:
- the cellular network has a central control node. All terminals in the cell need to be synchronized with the network equipment in order to correctly receive the signal sent by the network equipment. Therefore, compared with sending a synchronization signal every time a data signal is sent, the cellular network is more suitable.
- the network device broadcasts a separate synchronization signal, so that multiple terminal devices in the cell can also obtain time synchronization when there is no data transmission;
- network equipment (such as a base station) can control and schedule the air interface resources in the cell, so it can better control the location where the synchronization signal is sent, and avoid the conflict between the synchronization signal and other signals;
- the method of sending synchronization signals along the road is not suitable for cellular networks.
- the present application provides a solution.
- By periodically sending a synchronization signal through a network device not only the time synchronization of the first link can be obtained, but also the same synchronization signal can be shared by each terminal device, thereby reducing the resource overhead of the synchronization signal.
- network devices periodically send synchronization signals. In other words, synchronization signals do not need to be sent along the road. In this way, after the terminal device switches from the second link to the first link, it can use the periodically sent synchronization signals to quickly obtain time synchronization. .
- the terminal device initiates random access may include: “the terminal device sends a random access preamble", that is, “the terminal device initiates a random access” in the following may be replaced with “the terminal device sends a random access sequence leading sequence”. It can be understood that any manner in which the terminal device can initiate random access is applicable to this application.
- FIG. 6 is a schematic diagram of a signal transmission method 600 provided by an embodiment of the present application.
- Method 600 may include the following steps.
- the terminal device uses the first frequency resource to periodically receive the synchronization signal according to the period of the synchronization signal, where the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used to indicate one or more terminals that need to receive paging Device information.
- network devices periodically send synchronization signals.
- the network device determines the period of the synchronization signal, and periodically sends the synchronization signal according to the period of the synchronization signal.
- the synchronization signal may be transmitted periodically, that is, the synchronization signal does not need to be sent along the channel, that is, the synchronization signal does not need to be followed by a wake-up signal.
- FIG. 7 shows a schematic diagram of synchronization signal transmission applicable to this embodiment of the present application.
- the network device periodically sends a synchronization signal, and the synchronization signal and the wake-up signal can be sent separately, that is, the synchronization signal does not need to be sent along the road.
- method 600 further includes step 601.
- the terminal device determines a period of a synchronization signal.
- the period of the synchronization signal indicates the period of transmitting the synchronization signal.
- the network device sends a synchronization signal to the terminal device, and the terminal device can perform time synchronization through the received synchronization signal, and then can correctly receive the wake-up signal.
- the network device periodically sends the synchronization signal, and the terminal device periodically receives the synchronization signal, which can reduce the resource overhead of the synchronization signal.
- a network device as a central control node, so each terminal device can perform time synchronization with the same network device.
- the network device periodically sends the synchronization signal on the wake-up link, that is, the synchronization signal does not need to be sent channel, but periodically sent separately.
- data information does not necessarily follow the synchronization signal. Therefore, the network device does not need to send a synchronization signal when sending data information, but can send a synchronization signal according to the cycle of the synchronization signal, thereby enabling the terminal device to complete time synchronization before receiving the wake-up signal.
- the terminal device can receive the synchronization signal depends on whether the current network device has sent data, and the time delay for the terminal device to obtain synchronization after switching from the main link to the wake-up link cannot be guaranteed.
- the terminal device switches from the main link to the wake-up link, it can quickly acquire time synchronization by using the synchronization signal sent periodically.
- the synchronization signal refers to a signal that can be used for terminal equipment to perform synchronization. That is to say, the terminal device can perform time synchronization based on the synchronization signal.
- the synchronization signal can be generated based on a sequence with autocorrelation properties (eg, a sequence with good autocorrelation properties), so that the accuracy of synchronization can be improved.
- the synchronization signal may be generated based on any of the following sequences: M sequence (ie, Maximum length sequence), pseudo-random (Pseudo-Noise, PN) sequence, GOLD sequence, and the like.
- the modulation mode of the synchronization signal is amplitude shift keying (amplitude shift key, ASK), for example, it may be on off keying (on off key, OOK).
- ASK amplitude shift key
- OOK on off key
- the waveform of the synchronization signal is OOK.
- the wake-up signal may be used to indicate information related to paging.
- the information related to paging for example, can be used by the terminal device to determine whether to perform a process of receiving paging, and for example, can be used by the terminal device to determine whether to initiate random access.
- the "information related to paging" is referred to as paging information for short.
- the paging information includes: information (such as UE ID) of one or more terminal devices that need to receive paging, that is, the wake-up signal can be used to indicate information about one or more terminal devices that need to receive paging ( Such as UE ID).
- the one or more terminal devices may also be in the form of a terminal device group (UE group).
- UE group terminal device group
- terminal equipment groups can be divided according to regions, and terminal equipment groups can be divided according to whether to share wake-up signals, or terminal equipment groups can be divided according to characteristics of terminal equipment information (such as UE ID characteristics). End device group.
- the paging information includes information about a terminal device (or information about a group of terminal devices) that needs to receive paging
- the paging information can also be called the paging information of the terminal device (or the information about the terminal device group).
- the paging information of the group or called the paging information of the paging group).
- the modulation mode of the wake-up signal is ASK, for example, it may be OOK.
- the power consumption gain can be guaranteed as much as possible.
- the waveform of the wake-up signal is OOK
- the first frequency resource may indicate a frequency resource used for the terminal device to receive the wake-up signal and a synchronization signal, that is, a frequency resource used for the network device to send the wake-up signal and the synchronization signal.
- the frequency resources used for the wake-up signal and the synchronization signal transmission may be the same, for example, both are the first frequency resource.
- the waveform of the synchronous signal is the same as that of the wake-up signal, for example, both are OOK.
- the modulation mode of the synchronization signal is the same as that of the wake-up signal, for example, both are OOK.
- the terminal device includes a first module and a second module.
- the power consumption of the first module may be smaller than the power consumption of the second module.
- the first module for example, may be the wake-up circuit in FIG. 2 , or may also be the receiving module of the wake-up circuit; the second module, for example, may be the main circuit in FIG. 2 , or may also be the receiving module of the main circuit.
- the first module can be replaced by a wake-up circuit (or the first circuit), and the second module can be replaced by the main circuit (or the second circuit). The following are unified, and are described by the first module and the second module.
- the terminal device may receive synchronization signals and wake-up signals through (or use) the first module, receive and/or send other signals through (or use) the second module, or initiate random access through the second module, etc. .
- the terminal device may receive the first signal through the second module, and the first signal is a signal different from the wake-up signal and the synchronization signal.
- the first signal may represent various downlink signals or channels in the Legacy NR signal.
- the first signal includes any one or more of the following: synchronization signal block (synchronization signal block, SSB), PDCCH, PDSCH, channel state information reference signal (channel state information reference signal, CSI-RS), phase tracking reference Signal (phase tracking reference signal, PTRS), positioning reference signal (positioning reference signal, PRS), demodulation reference signal (DoModulation reference signal, DMRS).
- the terminal device may send a second signal through the second module, and the second signal may represent various uplink signals or channels in the Legacy NR signal.
- the second signal includes any one or more of the following: DMRS, physical uplink control channel (physical uplink control channel, PUCCH), physical uplink shared channel (physical uplink shared channel, PUSCH), sounding reference signal (sounding reference signal , SRS).
- the terminal device may receive the first information through the second module. For example, if the terminal device receives a wake-up signal through the first module, and the wake-up signal includes paging information related to the terminal device, the terminal device receives the first information through the second module.
- the first information may include one or more of the following: paging early indication (PEI), paging DCI (paging DCI), and paging message (paging message).
- PEI can be used to indicate whether a page is sent in its associated PO.
- the terminal device initiates random access through the second module, such as sending a random access preamble (preamble).
- preamble a random access preamble
- the terminal device uses the first frequency resource to periodically receive the synchronization signal
- the terminal device uses the first module to periodically receive the synchronization signal
- the terminal device can work on the first link (or the terminal device can send and receive signals on the first link), and can also work on the second link (or the terminal device can send and receive signals on the link). That is to say, the terminal device and the network device can communicate through the first link or through the second link.
- the first link may represent the link used by the terminal device to send and receive signals through the wake-up circuit as shown in Figure 2
- the second link may represent the link used by the terminal device to send and receive signals through the main circuit as shown in Figure 2 Link to use when signaling.
- the terminal device receives the synchronization signal and the wake-up signal on the first link, receives and/or sends other signals on the second link, or initiates random access on the second link, and so on.
- the terminal device uses the first module to send and receive signals (such as receiving synchronization signals and wake-up signals); if the terminal device and the network device communicate through the second link, the terminal device Use the second module to send and receive signals (such as receiving the first signal and/or sending the second signal).
- the terminal device if the terminal device communicates with the network device through the first link, the terminal device receives the synchronization signal and the wake-up signal; if the terminal device communicates with the network device through the second link, the terminal device receives the first signal and/or sends second signal.
- the first signal and the second signal reference may be made to the foregoing description, and details are not repeated here.
- the terminal device if the terminal device communicates with the network device through the second link, the terminal device receives the first information.
- the terminal device communicates with the network device through the second link, the terminal device receives the first information.
- the first information reference may be made to the foregoing description, and details are not repeated here.
- the terminal device if the terminal device communicates with the network device through the second link, the terminal device initiates random access, for example, the terminal device sends a random access preamble and so on.
- the terminal device uses the first frequency resource to periodically receive the synchronization signal may also be replaced with “the terminal device periodically receives the synchronization signal on the first link”, or may also be replaced with “the terminal device Use a wake-up circuit to periodically receive a synchronization signal”.
- the terminal device may be in the first state (such as in the WUR state) and the second state.
- the first state and the second state are used to describe different states of the terminal device (such as different radio resource control (radio resource control, RRC) states).
- RRC radio resource control
- the power consumption of the terminal device in the first state may be smaller than the power consumption of the terminal device in the second state.
- the first state may be, for example, an idle state or an inactive state, or may be a WUR state; the second state may be, for example, a connected state.
- the first state (such as the WUR state) may correspond to the terminal device working on the first link or corresponding to the terminal device using the first module to send and receive signals (such as receiving a synchronization signal and a wake-up signal).
- the terminal device receives synchronization signals and wake-up signals when it is in the first state, receives and/or sends other signals when it is in the second state, or initiates random access when it is in the second state, and so on.
- the terminal device uses the first module to send and receive signals (such as receiving synchronization signals and wake-up signals) or work on the first link; if the terminal device is in the second state, the terminal device uses the first module
- the two modules send and receive signals (such as receiving the first signal and/or sending the second signal) or work on the second link.
- the terminal device receives the synchronization signal and the wake-up signal; if the terminal device is in the second state, the terminal device receives the first signal and/or sends the second signal.
- the first signal and the second signal reference may be made to the foregoing description, and details are not repeated here.
- the terminal device receives the first information.
- the first information reference may be made to the foregoing description, and details are not repeated here.
- the terminal device initiates random access, for example, the terminal device sends a random access preamble and so on.
- the terminal device uses the first frequency resource to periodically receive the synchronization signal
- the terminal device may also be replaced with “the terminal device periodically receives the synchronization signal when it is in the first state (such as in the WUR state)".
- the terminal device may adopt the first mode (such as adopting WUR mode) and the second mode.
- the first mode and the second mode are used to describe that the terminal device transmits signals in different modes.
- the power consumption of the terminal device when transmitting signals in the first mode may be smaller than the power consumption of the terminal device in transmitting signals in the second mode.
- the first mode (such as the WUR mode) may correspond to the terminal device working on the first link or corresponding to the terminal device using the first module to send and receive signals (such as receiving a synchronization signal and a wake-up signal).
- the terminal device uses the first mode to receive synchronization signals and wake-up signals, uses the second mode to receive and/or send other signals, or uses the second mode to initiate random access, and so on.
- the terminal device uses the first module to send and receive signals (such as receiving synchronization signals and wake-up signals) or work on the first link; if the terminal device adopts the second mode, the terminal device uses the first module
- the two modules send and receive signals (such as receiving the first signal and/or sending the second signal) or work on the second link.
- the terminal device receives the synchronization signal and the wake-up signal; if the terminal device adopts the second mode, the terminal device receives the first signal and/or sends the second signal.
- the first signal and the second signal reference may be made to the foregoing description, and details are not repeated here.
- the terminal device receives the first information.
- the first information reference may be made to the foregoing description, and details are not repeated here.
- the terminal device initiates random access, for example, the terminal device sends a random access preamble and so on.
- the terminal device uses the first frequency resource to periodically receive the synchronization signal
- the terminal device uses the first mode to periodically receive the synchronization signal
- any modification belonging to the above-mentioned situations is applicable to the embodiments of the present application.
- it can also be distinguished by modulation method or waveform.
- the modulation mode of the synchronization signal and the wake-up signal is OOK
- the modulation mode of the first signal is orthogonal frequency division multiplexing (OFDM) modulation or discrete Fourier transform extended orthogonal frequency division Multiplexing (discrete fourier transformation-spread-orthogonal frequency division multiplexing, DFT-s-OFDM) modulation.
- OFDM orthogonal frequency division multiplexing
- DFT-s-OFDM discrete Fourier transform extended orthogonal frequency division Multiplexing
- the modulation mode of the synchronization signal and the wake-up signal is OOK
- the modulation mode of the second signal is OFDM modulation or DFT-s-OFDM modulation.
- the waveforms of the synchronization signal and the wake-up signal are OOK
- the waveform of the first signal is an OFDM waveform or a DFT-s-OFDM waveform.
- the waveforms of the synchronization signal and the wake-up signal are OOK
- the waveform of the second signal is an OFDM waveform or a DFT-s-OFDM waveform.
- Aspect 1 the cycle of the synchronization signal.
- the cycle T is used to represent the cycle of the synchronization signal.
- the unit of period T can be any of the following: symbol (symbol), time slot (slot), mini-slot (mini-slot), subframe (subframe), frame (frame), second (s), Milliseconds (ms), etc.
- the value size of the period T can be any of the following: one or more symbols, one or more time slots, one or more mini-slots, one or more subframes, one or more frames, m1 seconds, m2 milliseconds, etc. Wherein, m1 and m2 are numbers greater than 0.
- the period T is associated (or referred to as correlation, or referred to as correspondence) with the transmission parameter of the wake-up signal.
- the transmission parameter of the wake-up signal indicates a parameter of the wake-up signal through transmission.
- the transmission parameter of the wake-up signal includes: a time-domain resource length, or a sub-carrier space (sub-carrier space, SCS).
- the length of the time-domain resource indicates the length of the time-domain resource used by transmitting the wake-up signal.
- a symbol (symbol) or a chip (chip) is the minimum granularity of the signal structure
- the corresponding time-domain resource used for each (coded) bit transmission can be a symbol (symbol) or a chip (chip).
- the "time-domain resource length of the wake-up signal" may also be replaced by "symbol length", or may also be replaced by "chip length”, which is not limited.
- the time-domain resource length of the wake-up signal may include, for example, one or more time-domain symbols, or may include one or more mini-slots, or may include one or more time slots, or may include one or more sub-slots. frame. It can be understood that the time domain resources listed above are only for the convenience of understanding the solution of the present application, and should not be construed as limiting the present application.
- the period T is associated with the time-domain resource length (such as the symbol length) of the wake-up signal.
- the period T is associated with the length of the time-domain resource, which means that the length of the period T is associated with the length of the time-domain resource, or that the size of the period T is associated with the length of the time-domain resource.
- the period T is associated with the length of the time-domain resource.
- the time-domain resource length includes a first time-domain resource length and a second time-domain resource length
- the first period of the synchronization signal is associated with the first time-domain resource length
- the second period of the synchronization signal is associated with the second time-domain resource length.
- the length of the first time-domain resource is smaller than the length of the second time-domain resource
- the first period is shorter than the second period. That is to say, the longer the time-domain resource length of the wake-up signal is, the larger the period T may be.
- the time offset between the terminal device and the network side will become larger and larger between two synchronization signals.
- the wake-up signal is modulated by OOK modulation
- the demodulation performance of the OOK signal is affected by the length of the time-domain resource (such as the length of the symbol).
- the longer the length of the time-domain resource the greater the tolerance to residual time skew. Therefore, when the time offset change rate is constant, the longer the time domain resource length is, the longer the "reception performance can be guaranteed without re-time synchronization", and the corresponding synchronization signal cycle can be set larger.
- the period T is associated with the SCS of the wake-up signal.
- the subcarrier spacing includes a first subcarrier spacing and a second subcarrier spacing
- the first period of the synchronization signal is associated with the first subcarrier spacing
- the second period of the synchronization signal is associated with the second subcarrier spacing
- the carrier spacing is greater than the second subcarrier spacing
- the first period is smaller than the second period. That is to say, the smaller the SCS of the wake-up signal, the larger the period T can be.
- the SCS the greater the tolerance to residual time offset is, and the corresponding period of the synchronization signal can be set to be larger.
- the period T may also be associated with other transmission parameters of the wake-up signal, and for example, the period T may be associated with the transmission parameters of the first link. If the period T is associated with the transmission parameters of the first link, then the transmission parameters of the wake-up signal and the synchronization signal may be the same, that is, both are transmission parameters of the first link.
- the period T is configured by the network device, or is predefined (such as predefined by a standard), which will be described separately below.
- the period T may be configured by the network device.
- the network device can flexibly select an appropriate period T, thereby controlling the resource overhead of the synchronization signal.
- the method 600 may further include: the network device sends first configuration information, where the first configuration information is used to configure the period of the synchronization signal.
- the terminal device receives the first configuration information, and then, in step S601, the terminal device can learn the period T based on the first configuration information.
- the network device sends configuration information of the first link (that is, an example of the first configuration information), and the configuration information may include a period T.
- the network device may use radio resource control RRC signaling (such as dedicated RRC (dedicated RRC) signaling) on the second link (such as NR system) or send the first Link configuration information, where the configuration information may include a period T.
- RRC signaling such as dedicated RRC (dedicated RRC) signaling
- the period T may be predefined (such as predefined by a standard).
- the network device or the terminal device can determine the period T based on the predefined (such as standard predefined), which reduces the signaling overhead caused by the network device notifying the period T.
- the predefined such as standard predefined
- the period T may be related to the transmission parameter of the wake-up signal, and if the transmission parameter of the wake-up signal is determined, the corresponding period T is also determined accordingly.
- the terminal device acquires the transmission parameters of the wake-up signal.
- the terminal device receives system information from the network device, where the system information includes the transmission parameter of the wake-up signal; the terminal device can learn the corresponding period T based on the transmission parameter of the wake-up signal. It can be understood that, taking the foregoing first possible situation as an example, the transmission parameter of the wake-up signal may be received by the terminal device using the second module.
- the transmission parameter of the wake-up signal may be received by the terminal device on the second link.
- the transmission parameter of the wake-up signal may be received by the terminal device in the second state.
- the transmission parameter of the wake-up signal may be received by the terminal device in the second mode.
- the period T is associated with the time-domain resource length (eg, symbol length) of the wake-up signal.
- the period T and the time-domain resource length may exist in the form of Table 1.
- the time-domain resource length of the wake-up signal is length #1
- the period T of the synchronization signal used for the first link is T#1
- the resource length is length #2
- the period T of the synchronization signal used for the first link is T#2
- the time domain resource length of the wake-up signal is length #3
- the period T of the synchronization signal of the channel is T#3.
- the time-domain resource length may also include a greater number of lengths.
- the length of the time-domain resource can be a specific value, or a certain value range (for example, greater than a certain value, or less than a certain value, or between a certain value and another value, etc.),
- the length #1 can be a certain value, or the length #1 can also be a certain value range.
- Period T is associated with the SCS of the wake-up signal.
- Period T and SCS can exist in the form of Table 2.
- the SCS of the wake-up signal is SCS#1
- the SCS of the wake-up signal is SCS#2
- it can be known that the period T of the synchronization signal used for the first link is T#2
- the SCS of the wake-up signal is SCS#3
- the period T of the synchronization signal used for the first link is T #3.
- Table 2 is only an illustration and is not limited thereto, and any modification belonging to Table 2 is applicable to this application.
- an SCS may also include a greater number of SCSs.
- the pattern (pattern) (or pattern, or pattern) of the synchronization signal.
- the network device uses the first frequency resource to send the synchronization signal according to the period T and the pattern of the synchronization signal.
- the terminal device may use the first frequency resource to receive the synchronization signal according to the period T and the pattern of the synchronization signal.
- the network device sends second configuration information, where the second configuration information is used to configure a pattern of the synchronization signal.
- the terminal device receives the second configuration information.
- the terminal device can determine the pattern of the synchronization signal according to the second configuration information, and then can receive the synchronization signal according to the period T and the pattern of the synchronization signal.
- the flexibility of the period T can be improved.
- the period T is predefined by the standard, once the transmission parameters (such as symbol length or subcarrier spacing) are determined, the period T will be determined accordingly, which may limit the deployment of the first link in the network.
- the network device can flexibly configure the actual sending period of the synchronization signal, which improves flexibility.
- the pattern of the synchronization signal can indicate (or be called a representation, or be called a representation): the time domain position of the synchronization signal that can be sent (or can be received), and/or, it cannot be sent (or cannot be sent) received) the time domain position of the sync signal.
- the network device can send the synchronization signal according to the time domain position indicated by the period T and the pattern of the synchronization signal that can send the synchronization signal; the terminal device can receive the synchronization signal according to the period T and the time domain position indicated by the pattern of the synchronization signal that can receive the synchronization signal. Signal. It can be understood that in this case, since the transmission of the synchronization signal also needs to consider the pattern of the synchronization signal, the synchronization signal may not be transmitted periodically.
- a synchronization signal is sent or received at a certain time domain position
- the pattern of the synchronization signal indicates that the time domain position cannot send or receive the synchronization signal
- the synchronization signal is not sent or received at the time domain position
- the pattern of the synchronization signal indicates that the time domain position can send or receive the synchronization signal
- the synchronization signal is sent or received at the time domain position.
- the pattern of the synchronization signal can indicate (or be called a representation, or be called a representation): the time domain position that can be used for the first link transmission signal, and/or, can not be used for the first link The time domain position of the transmitted signal.
- the terminal device can determine the time domain position in the time domain according to the period T of the synchronization signal Receive a wake-up signal, or a synchronization signal.
- the terminal device determines to receive the synchronization signal at the time domain position according to the period T, the terminal The device receives the synchronization signal at this time domain location.
- the terminal device determines not to receive the synchronization signal at the time domain position according to the period T, then The terminal device can receive the wake-up signal at the position in the time domain.
- the time domain position is not used for the first link transmission signal, and the terminal device
- the first signal may be received and/or the second signal may be transmitted at the time domain location.
- the first signal and the second signal reference may be made to the above description, and details are not repeated here.
- the terminal device can determine whether to receive the synchronization signal according to the pattern of the synchronization signal, or can also determine whether to send and receive signals on the first link (such as receiving the synchronization signal and the wake-up signal) according to the pattern of the synchronization signal, or can also determine according to the pattern of the synchronization signal
- the pattern determines whether to receive a sync signal or a wake-up signal.
- the network device uses the first frequency resource to send the first signal and/or receive the second signal at the first time domain position, and the time domain position for sending the synchronization signal represented by the pattern of the synchronization signal does not include the first time domain position , or, the time domain position where the synchronization signal cannot be sent indicated by the pattern of the synchronization signal includes the first time domain position.
- the terminal device may use the first frequency resource to receive the first signal and/or send the second signal at the first time domain position.
- the resource ratio of the first link can be reduced, and the signals of the first link (such as wake-up signals and synchronization signals) can be time-division multiplexed with other signals (such as the first signal and/or the second signal) ( Time-division multiplexing, TDM), that is, at the same frequency position, the signal of the first link is sent for a period of time, and other signals (such as the first signal) are sent for another period of time. Therefore, the present application also facilitates the alignment of the symbol boundary between the signal of the first link and the existing signal (such as the first signal or the second signal), which can reduce the interference level.
- TDM Time-division multiplexing
- the first signal is a signal different from the wake-up signal and the synchronization signal, that is to say, the network device may send downlink signals other than the wake-up signal and the synchronization signal at the first time domain position.
- the first signal may represent various downlink signals or channels in the Legacy NR signal.
- the first signal includes one or more of the following: SSB, PDCCH, PDSCH, CSI-RS, PTRS, PRS, DMRS.
- the second signal is a signal different from the wake-up signal and the synchronization signal, that is, the network device can receive the uplink signal at the first time domain position.
- the second signal may represent various uplink signals or channels in the Legacy NR signal.
- the second signal includes one or more of the following: DMRS, PUCCH, PUSCH, and SRS.
- FIG. 8 shows a schematic diagram of synchronization signal and NR signal transmission applicable to the embodiment of the present application.
- the network device sends synchronization signals at T1, T2, T3, T4, and T5.
- the period of the synchronization signal is amplified by 2 times. Specifically, taking the T1-T4 cycle as an example, the network device allocates resources corresponding to T2 and T4 to the NR signal, that is, the network device sends synchronization signals at T1 and T3, and sends the first signal at T2 and T4; or, the network device Synchronization signals are sent at T1 and T3 and second signals are received at T2 and T4.
- the first link may support multiple data rates.
- Data rate indicating the data rate (data rate).
- the system capacity can be increased.
- the data rate of the wake-up signal can be reduced, and the wake-up signal can be reduced.
- the data rate can be equivalent to increasing the length of the wake-up signal, which can obtain more time-domain diversity and improve the robustness of the first link signal.
- the arrival time of the paging information of each terminal device is random, within a period of time, the number of paging information that needs to be sent by the first link is uncertain.
- the wake-up signal may use a lower data rate.
- the number of paging messages to be sent is large, considering that low data rate wake-up signals occupy more air interface resources (time-frequency resources), using a low data rate may lead to insufficient system capacity, so you can consider using a high data rate method to send Wake up signal to increase system capacity in a short time.
- the terminal device may learn the data rate of the wake-up signal through the synchronization signal, or learn the data rate of the wake-up signal through the wake-up signal. Furthermore, the terminal device may receive and demodulate the wake-up signal based on the data rate of the wake-up signal. These two methods are described in detail below.
- the data rate of the wake-up signal is obtained through the synchronization signal.
- the network device uses the first frequency resource to send the synchronization signal at the first moment according to the period of the synchronization signal, and the synchronization signal is used to indicate the data rate of the wake-up signal within a first period, and the first period is located after the first moment .
- the first moment represents the time of sending the synchronization signal, which can be a certain moment (such as the start moment of sending the synchronization signal, and the end moment of sending the synchronization signal), or a certain period of time (such as the time of sending the synchronization signal). period between the start time and the end time), there is no limit.
- the first period may be a period after the first moment, that is, a period of time after the network device sends the synchronization signal, or a period of time after the terminal device receives the synchronization signal.
- the first period is located after the first moment and before the second moment.
- the second moment is the moment when the i-th synchronization signal is sent by the network device after the first moment, and i is an integer greater than 1 or equal to 1. That is to say, assuming that the network device sends the first synchronization signal at the first moment, and sends the (i+1)th synchronization signal at the second moment, the first period is the period between the first moment and the second moment.
- the first period may represent the period between the network device currently sending the synchronization signal and the next time it sends the synchronization signal, or it can be understood that the start time of the first period is the first moment , with a duration of period T.
- the duration of the first period may also be a preset duration, such as a duration preconfigured by the network device, or a standard predefined duration.
- Example 1 the length of the synchronization signal is used to indicate the data rate of the wake-up signal in the first period.
- the length of the synchronization signal can be associated with the data rate of the wake-up signal.
- the network device can indicate the data rate of the wake-up signal in a later period of time (such as within the first period) through the length of the synchronization signal.
- the terminal device can use the synchronization signal to The length of can obtain the data rate of the wake-up signal in the first time period. Therefore, the terminal device can blindly detect the length of the synchronization signal, thereby judging the data rate of the subsequent wake-up signal, reducing the signaling overhead caused by the network device notifying the data rate of the wake-up signal.
- the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal
- the length of the first synchronization signal is used to indicate the data rate of the wake-up signal in the first period of time is the first data rate
- the second The lengths of the two synchronization signals are used to indicate the data rate of the wake-up signal in the first period is the second data rate
- the length of the first synchronization signal is smaller than the length of the second synchronization signal
- the first data rate is higher than the second data rate.
- the data rate of the wake-up signal can be reduced, and the network device can send a longer synchronization signal (for example, the resistance to residual time offset can be improved Tolerance), it can be seen that the longer the length of the synchronization signal received by the terminal device, the lower the data rate of the wake-up signal may be in the following period of time.
- the data rate of the wake-up signal can be increased, and the network device can send a synchronization signal with a shorter length (for example, the resource overhead caused by sending the synchronization signal can be reduced).
- the length of the synchronization signal can be designed to be inversely proportional to the data rate. In this way, not only can the length of the synchronization signal received at a certain moment match the data rate of the wake-up signal in a later period of time, but also the synchronization signal can be detected by blind detection. length, the data rate of the subsequent wake-up signal can be judged.
- Figure 9 shows a schematic suitable for this design.
- the wake-up signal following the short synchronization signal ie, the first synchronization signal
- the wake-up signal following the long synchronization signal ie, the second synchronization signal
- the wake-up signal following the long synchronization signal is a low data rate signal.
- the synchronization signal may be set to correspond to the data rate of the subsequent wake-up signal.
- the network device periodically sends a synchronization signal. If the data rate of the wake-up signal to be sent by the network device is the first data rate, the network device sends the first synchronization signal; if the data rate of the wake-up signal to be sent by the network device is second data rate, the network device sends a second synchronization signal.
- the data rate of the wake-up signal sent by the network device within the first time period is the first data rate
- the network device sends the second synchronization signal at the first moment then The data rate of the wake-up signal sent by the network device within the first time period is the second data rate.
- each terminal equipment in the network receives the first synchronization signal
- each terminal equipment can learn that the data rate of the wake-up signal within the first period is the first data rate
- each terminal equipment in the network receives the second synchronization signal each terminal device can learn that the data rate of the wake-up signal within the first period is the second data rate.
- the terminal device can determine the data of the wake-up signal sent by the network device within the first time period The rate is the first data rate; no matter which or which terminal device receives the second synchronization signal of the network device (that is, the second synchronization signal sent by the network device at the first moment), the terminal device can determine that the network device is within the first time period
- the data rate of the sent wake-up signal is the second data rate.
- the synchronization signal includes indication information (referred to as first indication information for distinction), and the first indication information is used to indicate the data rate of the wake-up signal within the first period.
- the synchronization signal may also include first indication information, and the first indication information is used to indicate the data rate of the wake-up signal within a later period of time (such as within the first period of time).
- first indication information is used to indicate the data rate of the wake-up signal within a later period of time (such as within the first period of time).
- a synchronization signal of one length can be designed.
- the first indication information may be located after the sequence used for the synchronization function.
- FIG. 10 shows a schematic diagram applicable to Example 2 in Mode 1.
- the first indication information may be located after the sequence for the synchronization function, and the data rate of the wake-up signal following the synchronization signal may be indicated through the first indication information carried by the synchronization signal.
- the method of obtaining the data rate of the wake-up signal through the synchronization signal is introduced above in conjunction with Example 1 and Example 2, and the method of obtaining the data rate of the wake-up signal through the wake-up signal is introduced below.
- the data rate of the wake-up signal is obtained through the wake-up signal.
- the network device uses the first frequency resource to send a wake-up signal, where the wake-up signal includes second indication information, where the second indication information is used to indicate a data rate of the wake-up signal.
- the second indication information may also be called data rate indication information, for example, and its naming is not limited.
- the wake-up signal includes second indication information
- the second indication information is specifically used to indicate a data rate of other information in the wake-up signal except the second indication information.
- the data rate of the second indication information may be configured by the network device, or may also be predefined, and is not limited.
- the data rate of the second indication information is fixed, that is, no matter whether the paging information is a high data rate or a low data rate, the data rate of the second indication information itself is the same.
- the data rate of the second indication information may be equal to the lowest data rate, so as to ensure the robustness of the second indication information.
- FIG. 11 shows a schematic diagram applicable to Mode 2.
- a wake-up signal includes second indication information
- the second indication information is used to indicate the data rate of other information (such as paging information) in the wake-up signal except the second indication information.
- the second indication information may be set in front of the paging information.
- the second indication information may be located at the beginning of a wake-up signal (such as the starting position, and such as the position before the paging information).
- the synchronization signal includes a first synchronization signal and a second synchronization signal, and the length of the first synchronization signal is shorter than the length of the second synchronization signal.
- the synchronization signal may include multiple signals of different lengths, such as the first synchronization signal and the second synchronization signal mentioned above, so that not only can a synchronization signal of an appropriate length be selected for transmission according to the actual situation, but also can be used Based on different channel states, serve terminal devices in different channel states.
- the following description mainly takes the synchronous signal including the first synchronous signal and the second synchronous signal as an example. It can be understood that the synchronous signal may include more signals of different lengths.
- the network device may determine whether to send the first synchronization signal or the second synchronization signal according to the channel state.
- the first synchronization signal and the second synchronization signal correspond to the same period T. That is to say, when the network device sends a synchronization signal based on the period T, it can determine whether to send a synchronization signal with a shorter length (that is, the first synchronization signal) or to send a synchronization signal with a longer length (that is, the second synchronization signal) according to the channel state. . For example, if the network device judges that the channel state is poor, the network device can send a longer synchronization signal (that is, the second synchronization signal); if the network device judges that the channel state is better, the network device can send a shorter length synchronization signal. Synchronization signal (that is, the first synchronization signal).
- the signal quality threshold can be a predefined threshold, which can be configured by the network side without limitation. If the quality of the signal transmitted by the network device through the channel is greater than the signal quality threshold, the network device can know that the channel state is better, and the network device can send a synchronization signal with a shorter length (that is, the first synchronization signal); if the network device transmits the signal through the channel If the quality of is less than the signal quality threshold, the network device can learn that the channel state is poor, and the network device can send a longer synchronization signal (ie, the second synchronization signal).
- the network device periodically sends the second synchronization signal, and the network device periodically sends the first synchronization signal.
- the network device may not be able to know the current channel state of the terminal device, and thus cannot adaptively change the length of the synchronization signal, that is, it cannot determine whether to send the second synchronization signal or the first synchronization signal. Therefore, both the second synchronization signal and the first synchronization signal can be sent periodically.
- the network device determines a period of the first synchronization signal and a period of the second synchronization signal, and the period of the first synchronization signal is shorter than the period of the second synchronization signal.
- the network device configures the period of the first synchronization signal and the period of the second synchronization signal respectively, or the period of the first synchronization signal and the period of the second synchronization signal are predefined by the standard. I won't repeat them here.
- FIG. 12 shows a schematic diagram of periodic sending of the first synchronization signal and the second synchronization signal.
- the network device periodically sends the first synchronization signal according to the cycle of the first synchronization signal, and periodically sends the second synchronization signal according to the cycle of the second synchronization signal.
- the length of the first synchronization signal is short and the cycle is short, and the length of the second synchronization signal is long and the cycle is also long.
- a shorter period means that the time interval for network devices to send synchronization signals is shorter, that is, the time interval for terminal devices to perform time synchronization based on synchronization signals is shorter, so the length of synchronization signals does not need to be designed too long to reduce the resource overhead of synchronization signals.
- a longer cycle means that the time interval for network devices to send synchronization signals is longer, that is, the time interval for terminal devices to perform time synchronization based on synchronization signals is longer, so the length of synchronization signals can be designed relatively longer, so as to improve the protection against residual time offset. tolerance.
- the period of the first synchronization signal and the period of the second synchronization signal may be related or irrelevant, and are not limited.
- the period of the second synchronization signal is an integer multiple of the period of the first synchronization signal.
- the period of the first synchronization signal is T1
- the period of the second synchronization signal is T2
- T2 is an integer multiple of T1.
- the time interval between the terminal device receiving the second synchronization signal and the terminal device receiving the first synchronization signal is the same as the period of the first synchronization signal. Based on this manner, the first synchronization signal and the second synchronization signal may be nested and sent.
- the nested sending of the first synchronization signal and the second synchronization signal can be understood as that, among every N first synchronization signals, one of the first synchronization signals is replaced by the second synchronization signal.
- the period of the second synchronization signal is an integer multiple of the period of the first synchronization signal.
- FIG. 13 shows another schematic diagram of periodic sending of the first synchronization signal and the second synchronization signal. As shown in FIG. 13 , the period of the second synchronization signal is four times that of the first synchronization signal, and one of the first synchronization signals is replaced by the second synchronization signal in every four first synchronization signals.
- the foregoing mainly uses the first synchronization signal and the second synchronization signal as an example for illustration, and it can be understood that the present application does not limit the length of the synchronization signal.
- synchronization signals of greater length may also be included.
- FIG. 14 is a schematic diagram of a signal transmission method 1400 provided by an embodiment of the present application.
- Method 1400 may include the following steps.
- the terminal device receives system information from the network device through the second link.
- the terminal device receives the system information from the network device through the second link, or it may be replaced by the terminal device receiving the system information from the network device on the second link.
- the terminal device receives the system information from the network device through the second link, or alternatively, the terminal device receives the system information from the network device through the second module, or alternatively, the terminal device receives the system information from the network device when it is in the second state.
- the system information of the device or alternatively, the terminal device receives the system information from the network device in the second mode.
- the system information may include configuration information of the first link.
- the terminal device can learn the configuration information of the first link according to the system information.
- the configuration information of the first link includes, for example, one or more of the following: a transmission parameter of the wake-up signal, a transmission parameter of the synchronization signal, a period T of the synchronization signal, and a transmission parameter of the first link.
- the configuration information of the first link includes transmission parameters of the wake-up signal.
- the transmission parameter of the wake-up signal may include at least one of the time-domain resource (such as symbol) length of the wake-up signal, the SCS of the wake-up signal, and the like, for example.
- the terminal device may receive the wake-up signal on the first link according to the transmission parameter of the wake-up signal. If the cycle T is related to the transmission parameter of the wake-up signal, the terminal device can also determine the corresponding cycle T according to the transmission parameter of the wake-up signal, and then the terminal device can periodically receive the synchronization signal on the first link based on the cycle T . For details, reference may be made to the description in aspect 1 above, which will not be repeated here.
- the configuration information of the first link includes a period T.
- the terminal device may periodically receive the synchronization signal on the first link based on the period T.
- the configuration information of the first link includes transmission parameters of the synchronization signal.
- the terminal device may receive the synchronization signal on the first link according to the transmission parameter of the synchronization signal.
- the transmission parameter of the synchronization signal may include at least one of a period T, a length of a time domain resource (such as a symbol) of the synchronization signal, and an SCS of the synchronization signal, for example.
- the configuration information of the first link includes transmission parameters of the first link.
- the transmission parameters of the first link may include, for example, at least one of the time domain resource (eg, symbol) length of the first link, the SCS of the first link, and the like.
- the terminal device may receive the wake-up signal on the first link according to the transmission parameter of the first link. If the period T is related to the transmission parameters of the first link, the terminal device can also determine the corresponding period T according to the transmission parameters of the first link, and then the terminal device can periodically to receive the synchronization signal. For details, reference may be made to the description in aspect 1 above, which will not be repeated here.
- the terminal device turns on the wake-up circuit, and works on the first link.
- the terminal device works on the first link, or alternatively, the terminal device receives signals through the first module (such as receiving a wake-up signal and a synchronization signal), or alternatively, the terminal device is in the first state (or the terminal device's The state is adjusted to the first state), or alternatively, the terminal device receives signals in the first mode (for example, receiving a wake-up signal and a synchronization signal).
- the terminal device receives signals through the first module (such as receiving a wake-up signal and a synchronization signal), or alternatively, the terminal device is in the first state (or the terminal device's The state is adjusted to the first state), or alternatively, the terminal device receives signals in the first mode (for example, receiving a wake-up signal and a synchronization signal).
- the first module such as receiving a wake-up signal and a synchronization signal
- the terminal device is in the first state (or the terminal device's The state is adjusted to the first state), or alternatively, the terminal device receives signals in the first mode
- the terminal device can activate the wake-up circuit and work on the first link. At this point, the main circuit can be turned off.
- the terminal device may activate the wake-up circuit and work on the first link.
- the preset condition may include, for example: the distance between the terminal device and the network device is relatively short, and/or the moving speed of the terminal device is relatively slow.
- the short distance between the terminal device and the network device indicates that the terminal device is located at a position where the network device network is relatively strong.
- the terminal device can enable a wake-up circuit.
- the terminal device may judge the distance between the terminal device and the network device by measuring the signal quality (or channel quality) of the serving cell.
- the terminal device may determine the moving speed of the terminal device by measuring the variation of the signal quality of the serving cell.
- the terminal device receives a synchronization signal from the network device through the first link.
- the terminal device receives the synchronization signal from the network device through the first link, or it may be replaced by the terminal device receiving the synchronization signal from the network device on the first link.
- the terminal device may periodically receive the synchronization signal through the first link according to the period T obtained in step S1410. Furthermore, the terminal device can perform time synchronization according to the received synchronization signal, so as to correctly receive the wake-up signal.
- the terminal device receives a wake-up signal from the network device through the first link.
- the terminal device receives the wake-up signal from the network device through the first link, or it may be replaced by the terminal device receiving the wake-up signal from the network device on the first link.
- step S1430 the terminal device can perform synchronization based on the received synchronization signal, so the terminal device can correctly receive the wake-up signal from the network device.
- the terminal device may perform a paging reception process and/or initiate random access.
- the terminal device receives the first information or initiates random access through the second link.
- the terminal device receives the first information or initiates random access through the second link, or may be replaced by the terminal device receiving the first information or initiating random access on the second link.
- the terminal device may receive the first information through the second link (or perform paging through the second link). received process).
- the wake-up signal carries complete paging information
- the terminal device after the terminal device receives the wake-up signal through the first link, it can determine whether it is paged based on the wake-up signal. If the terminal device determines through the wake-up signal When being paged, as an example, the terminal device may initiate random access through the second link. Initiating random access by the terminal device may include, for example, that the terminal device sends a random access preamble to the network device.
- receiving may also be replaced with “detecting”.
- receiving a wake-up signal may also be replaced with “detect a wake-up signal”.
- first link and second link are mainly used as examples for description.
- the first link may also be replaced with “the first module (or first circuit)", or may also be replaced with “in the first state”, or may also be replaced with “in the first mode”.
- the terminal device receives the synchronization signal on the first link may also be replaced with "the terminal device receives the synchronization signal through the first module (or first circuit)”.
- “Second link” may also be replaced by "second module (or second circuit)", or may also be replaced by "in the second state", or may also be replaced by "in the second mode”.
- the terminal device receives the first signal on the second link may also be replaced with "the terminal device receives the first signal through the second module (or second circuit)”.
- transmission includes receiving and/or sending.
- transmitting a signal may include receiving a signal and/or sending a signal.
- signal may also be replaced with “sequence” or “sequence of signals”.
- wake-up signal could be replaced with “sequence” or “sequence of wake-up signals”.
- the network device can map the sequence of the wake-up signal of a certain length to a transmission resource (such as a time-frequency resource), Generate a wake-up signal and send it to the terminal device.
- the interaction between the terminal device and the network device is mainly used as an example for illustration, and the present application is not limited thereto.
- It is a terminal device or a network device; the network device can be replaced by a sender device, and the sender device can be a terminal device or a network device.
- terminal device may be replaced with “first terminal device”
- network device may be replaced with “second terminal device”.
- the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be implemented by the terminal device; in addition, the methods and operations implemented by the network device can also be implemented by It may be implemented by components (such as chips or circuits) that may be used in network equipment, and is not limited.
- the embodiments of the present application further provide corresponding devices, and the device includes corresponding modules for executing the foregoing method embodiments.
- the module can be software, or hardware, or a combination of software and hardware. It can be understood that the technical features described in the above method embodiments are also applicable to the following device embodiments.
- Fig. 15 is a schematic block diagram of a communication device provided by an embodiment of the present application.
- the apparatus 1500 includes a transceiver unit 1510 and a processing unit 1520 .
- the transceiver unit 1510 may be used to implement corresponding communication functions.
- the transceiver unit 1510 may also be called a communication interface or a communication unit.
- the processing unit 1520 may be used for data or signal processing.
- the device 1500 further includes a storage unit, which can be used to store instructions and/or data, and the processing unit 1520 can read the instructions and/or data in the storage unit, so that the device implements the foregoing method embodiments actions of the terminal device.
- a storage unit which can be used to store instructions and/or data
- the processing unit 1520 can read the instructions and/or data in the storage unit, so that the device implements the foregoing method embodiments actions of the terminal device.
- the device 1500 can be used to execute the actions performed by the terminal device in the above method embodiments.
- the device 1500 can be a terminal device or a component of the terminal device, and the transceiver unit 1510 is used to perform the actions in the above method embodiments.
- the processing unit 1520 is configured to perform processing-related operations on the terminal device side in the above method embodiments.
- the processing unit 1520 is used to determine the period of the synchronization signal; the transceiver unit 1510 is used to use the first frequency resource period according to the period of the synchronization signal
- the synchronization signal is selectively received, wherein the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used to indicate information of one or more terminal devices that need to receive paging.
- the apparatus 1500 may implement steps or procedures corresponding to the execution of the terminal device in the method embodiment according to the embodiment of the present application, and the apparatus 1500 may include a unit for executing the method executed by the terminal device in the embodiment shown in FIG. 6 .
- the processing unit 1520 is used to determine the period of the synchronization signal; the transceiver unit 1510 is used to use the first frequency resource period according to the period of the synchronization signal
- the synchronization signal is sent selectively, wherein the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used to indicate information of one or more terminal devices that need to receive paging.
- the apparatus 1500 may implement steps or processes corresponding to the execution of the network device in the method embodiment according to the embodiment of the present application, and the apparatus 1500 may include a unit for executing the method executed by the network device in the embodiment shown in FIG. 6 .
- the apparatus 1500 here is embodied in the form of functional units.
- the term "unit” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
- ASIC application specific integrated circuit
- the apparatus 1500 can be specifically the terminal device in the above-mentioned embodiments, and can be used to execute various processes and/or steps corresponding to the terminal device in the above-mentioned method embodiments, for To avoid repetition, I won't repeat them here.
- the apparatus 1500 in each of the above solutions has the function of implementing the corresponding steps performed by the device (such as a terminal device or a network device) in the above method.
- the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
- the hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver computer), and other units, such as a processing unit, may be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.
- transceiver unit 1510 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.
- the apparatus in FIG. 15 may be the network element or device in the foregoing embodiments, or may be a chip or a chip system, such as a system on chip (system on chip, SoC).
- the transceiver unit may be an input-output circuit or a communication interface;
- the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. It is not limited here.
- Fig. 16 is a schematic block diagram of another communication device provided by an embodiment of the present application.
- the apparatus 1600 includes a first module 1610 .
- the first module 1610 may be a wake-up circuit, or may also be a module of the wake-up circuit (such as a receiving module).
- the first module 1610 can be used to perform the operation performed by the wake-up circuit on the terminal device side in the method embodiment above, or can be used to perform the operation performed by the terminal device side through the first link in the method embodiment above, or can be used to Perform the operations performed when the terminal device is in the first state in the above method embodiments, or may be used to perform the operations performed when the terminal device adopts the first mode in the above method embodiments.
- the terminal device receives a wake-up signal through the first module 1610; as another example, the terminal device receives a synchronization signal through the first module 1610.
- the apparatus 1600 includes a second module 1620 .
- the second module 1620 may be a main circuit, or may also be a module of the main circuit (such as a receiving module).
- the first module 1610 and the second module 1620 can be integrated together, or can also be set separately.
- the second module 1620 can be used to perform the operations performed by the main circuit on the terminal device side in the above method embodiments, or can be used to perform the operations performed by the terminal device side through the second link in the above method embodiments, or can be used to The operations performed when the terminal device is in the second state in the method embodiments above are performed, or may be used to perform the operations performed when the terminal device adopts the second mode in the method embodiments above.
- the terminal device receives the first signal through the second module 1610; as another example, the terminal device sends the second signal through the second module 1610; as another example, the terminal device initiates random access through the second module 1610, such as sending a random access preamble sequence.
- Fig. 17 is a schematic block diagram of another communication device provided by an embodiment of the present application.
- the device 1700 includes a processor 1710, the processor 1710 is coupled with a memory 1720, the memory 1720 is used for storing computer programs or instructions and/or data, and the processor 1710 is used for executing the computer programs or instructions stored in the memory 1720, or reading the memory 1720
- the stored data is used to execute the methods in the above method embodiments.
- processors 1710 there are one or more processors 1710 .
- the memory 1720 is integrated with the processor 1710, or is set separately.
- the device 1700 further includes a transceiver 1730 for receiving and/or sending signals.
- the processor 1710 is configured to control the transceiver 1730 to receive and/or send signals.
- the apparatus 1700 is used to implement operations performed by devices (such as terminal devices, and network devices) in the above method embodiments.
- the processor 1710 is configured to execute the computer programs or instructions stored in the memory 1720, so as to implement related operations of the network device in each method embodiment above.
- the processor 1710 is configured to execute the computer programs or instructions stored in the memory 1720, so as to implement related operations of the terminal device in the foregoing method embodiments.
- processors mentioned in the embodiment of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits ( application specific integrated circuit (ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
- the memory mentioned in the embodiments of the present application may be a volatile memory and/or a nonvolatile memory.
- the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
- the volatile memory may be random access memory (RAM).
- RAM random access memory
- RAM can be used as an external cache.
- RAM includes the following multiple forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), Double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and direct Memory bus random access memory (direct rambus RAM, DR RAM).
- the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
- the memory storage module may be integrated in the processor.
- memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.
- the embodiment of the present application also provides a computer-readable storage medium, on which computer instructions for implementing the methods performed by the device (such as a terminal device, or a network device) in the above method embodiments are stored.
- the computer when the computer program is executed by a computer, the computer can implement the methods performed by the network device in the above method embodiments.
- the computer when the computer program is executed by a computer, the computer can implement the methods executed by the terminal device in the above method embodiments.
- An embodiment of the present application further provides a computer program product, including instructions, which, when executed by a computer, implement the methods performed by devices (such as terminal devices, and network devices) in the foregoing method embodiments.
- the disclosed devices and methods may be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the units is only a logical function division. In actual implementation, there may be other division methods.
- multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
- the computer may be a personal computer, a server, or a network device.
- the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
- the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
- the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, a solid state disk (SSD), etc.
- the aforementioned available medium includes but Not limited to: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes.
- Embodiment 1 A method for signal transmission, characterized in that it comprises:
- the terminal device determines the period of the synchronization signal
- the terminal device periodically receives the synchronization signal by using the first frequency resource according to the cycle of the synchronization signal, wherein the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used to indicate the need to receive Information about one or more end devices paged.
- Embodiment 2 according to the method described in embodiment 1, it is characterized in that,
- the period of the synchronization signal is associated with the transmission parameter of the wake-up signal.
- Embodiment 3 The method according to Embodiment 1 or 2, wherein the transmission parameter of the wake-up signal includes a time-domain resource length,
- the time-domain resource length includes a first time-domain resource length and a second time-domain resource length, the first cycle of the synchronization signal is associated with the first time-domain resource length, and the second cycle of the synchronization signal is associated with the The second time-domain resource length is associated, the first time-domain resource length is less than the second time-domain resource length, and the first period is less than the second period.
- Embodiment 4. according to the method described in embodiment 1 or 2, is characterized in that,
- the transmission parameters of the wake-up signal include subcarrier spacing,
- the subcarrier spacing includes a first subcarrier spacing and a second subcarrier spacing, the first period of the synchronization signal is associated with the first subcarrier spacing, and the second period of the synchronization signal is associated with the second subcarrier spacing.
- Carrier spacing is correlated, the first subcarrier spacing is greater than the second subcarrier spacing, and the first period is smaller than the second period.
- Embodiment 5 The method according to any one of embodiments 1 to 4, characterized in that,
- the period of the synchronization signal is configured by the network device, or,
- the period of the synchronization signal is predefined by the standard.
- Embodiment 6 The method according to Embodiment 5, wherein if the cycle of the synchronization signal is configured by the network device, the method further includes:
- the terminal device receives first configuration information, where the first configuration information is used to configure a period of the synchronization signal.
- Embodiment 7 according to the method described in any one in embodiment 1 to 6, it is characterized in that, described method also comprises:
- the terminal device receives second configuration information, where the second configuration information is used to configure a pattern pattern of the synchronization signal;
- the terminal device uses the first frequency resource to periodically receive the synchronization signal according to the period of the synchronization signal, including:
- the terminal device receives the synchronization signal by using the first frequency resource according to the period of the synchronization signal and the pattern of the synchronization signal.
- Embodiment 8 the method according to embodiment 7, is characterized in that, described method also comprises:
- the terminal device uses the first frequency resource to receive the first signal and/or send the second signal at the first time domain position, and the time domain position for sending the synchronization signal represented by the pattern of the synchronization signal does not include first time domain position;
- the first signal includes one or more of the following: synchronization signal block SSB, physical downlink control channel PDCCH, physical downlink shared channel PDSCH, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS, positioning Reference signal PRS, demodulation reference signal DMRS;
- synchronization signal block SSB physical downlink control channel PDCCH, physical downlink shared channel PDSCH, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS, positioning Reference signal PRS, demodulation reference signal DMRS;
- the second signal includes one or more of the following: a demodulation reference signal DMRS, a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.
- DMRS demodulation reference signal
- PUSCH physical uplink shared channel
- PUCCH physical uplink control channel
- SRS sounding reference signal
- Embodiment 9 The method according to Embodiment 8, wherein the terminal device includes a first module and a second module,
- the terminal device receives the synchronization signal and the wake-up signal through the first module, and the terminal device receives the first signal and/or sends the second signal through the second module.
- Embodiment 10 The method according to any one of embodiments 1 to 9, wherein the terminal device uses the first frequency resource to periodically receive the synchronization signal according to the period of the synchronization signal, including :
- the terminal device receives the synchronization signal at a first moment using a first frequency resource according to a period of the synchronization signal, the synchronization signal is used to indicate the data rate of the wake-up signal in a first period, and the second A period of time is after the first moment.
- Embodiment 11 The method according to embodiment 10, characterized in that,
- the length of the synchronization signal is used to indicate the data rate of the wake-up signal during the first period
- the synchronization signal includes first indication information, and the first indication information is used to indicate the data rate of the wake-up signal within the first period.
- Embodiment 12 The method according to Embodiment 11, wherein the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, and the length of the first synchronization signal is used to indicate the length of the synchronization signal
- the data rate of the wake-up signal in the first period is a first data rate
- the length of the second synchronization signal is used to indicate the data rate of the wake-up signal in the first period is a second data rate
- the The length of the first synchronization signal is smaller than the length of the second synchronization signal
- the first data rate is higher than the second data rate.
- Embodiment 13 The method according to any one of embodiments 10 to 12, wherein the first time period is located after the first moment and before the second moment, and the second moment is the moment of the i-th synchronization signal received by the terminal device after the first moment, where i is an integer greater than 1 or equal to 1.
- Embodiment 14 according to the method described in any one in embodiment 1 to 9, it is characterized in that, described method also comprises:
- the terminal device receives a wake-up signal by using the first frequency resource, and the wake-up signal includes second indication information, where the second indication information is used to indicate a data rate of the wake-up signal.
- Embodiment 15 The method according to Embodiment 14, wherein the second indication information is specifically used to indicate the data rate of other information in the wake-up signal except the second indication information, and the second indication information
- the data rate of the second indication information is configured or predefined by the network device.
- Embodiment 16 The method according to any one of embodiments 1 to 15, wherein the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, and the length of the first synchronization signal The length of is less than the length of the second synchronization signal, and the period of the first synchronization signal is less than the period of the second synchronization signal.
- Embodiment 17 The method according to embodiment 16, characterized in that,
- the period of the second synchronization signal is an integer multiple of the period of the first synchronization signal, and the time interval between the terminal device receiving the second synchronization signal and the terminal device receiving the first synchronization signal, It is the same as the period of the first synchronization signal.
- Embodiment 18 The method according to any one of embodiments 1 to 17, wherein,
- the waveform of the synchronization signal is the same as that of the wake-up signal, and/or, the modulation mode of the synchronization signal is the same as the modulation mode of the wake-up signal.
- Embodiment 19 The method according to any one of embodiments 1 to 18, characterized in that,
- the modulation mode of the synchronization signal and the modulation mode of the wake-up signal are on-off keying OOK, and/or,
- the waveform of the synchronization signal and/or the waveform of the wake-up signal is OOK.
- Embodiment 20 The method according to any one of embodiments 1 to 19, further comprising:
- the terminal device uses the first frequency resource to receive the wake-up signal from the network device, where the wake-up signal is used to indicate that the information of one or more terminal devices that need to receive paging includes the terminal device;
- the terminal device receives first information from the network device and/or initiates random access,
- the first information includes one or more of the following information: paging downlink control information DCI, paging message, and paging advance indication PEI.
- Embodiment 21 The method according to Embodiment 20, wherein the terminal device receives the first information from the network device and/or initiates random access, including:
- the terminal device receives the first information from the network device and/or initiates random access by using the second frequency resource.
- Embodiment 22 The method according to Embodiment 20 or 21, wherein the terminal device includes a first module and a second module,
- the terminal device receives the synchronization signal and the wake-up signal through the first module, and the terminal device receives the first information and/or initiates random access through the second module.
- Embodiment 23 A method for signal transmission, comprising:
- the network device determines the period of the synchronization signal
- the network device uses the first frequency resource to periodically send the synchronization signal according to the period of the synchronization signal, wherein the first frequency resource is also used to transmit a wake-up signal, and the wake-up signal is used to indicate the need to receive Information about one or more end devices paged.
- Embodiment 24 The method according to embodiment 23, wherein,
- the period of the synchronization signal is associated with the transmission parameter of the wake-up signal.
- Embodiment 25 The method according to embodiment 24, further comprising:
- the network device broadcasts system information, where the system information includes transmission parameters of the wake-up signal.
- Embodiment 26 The method according to any one of embodiments 23 to 25, wherein the transmission parameter of the wake-up signal includes a time-domain resource length,
- the time-domain resource length includes a first time-domain resource length and a second time-domain resource length, the first cycle of the synchronization signal is associated with the first time-domain resource length, and the second cycle of the synchronization signal is associated with the The second time-domain resource length is associated, the first time-domain resource length is less than the second time-domain resource length, and the first period is less than the second period.
- Embodiment 27 The method according to any one of embodiments 23 to 25, wherein,
- the transmission parameters of the wake-up signal include subcarrier spacing,
- the subcarrier spacing includes a first subcarrier spacing and a second subcarrier spacing, the first period of the synchronization signal is associated with the first subcarrier spacing, and the second period of the synchronization signal is associated with the second subcarrier spacing.
- Carrier spacing is correlated, the first subcarrier spacing is greater than the second subcarrier spacing, and the first period is smaller than the second period.
- Embodiment 28 The method of any one of embodiments 23 to 27, wherein,
- the period of the synchronization signal is configured by the network device, or,
- the period of the synchronization signal is predefined by the standard.
- Embodiment 29 The method according to Embodiment 28, wherein if the cycle of the synchronization signal is configured by the network device, the method further includes:
- the network device sends first configuration information, where the first configuration information is used to configure a period of the synchronization signal.
- Embodiment 30 The method according to any one of embodiments 23 to 29, further comprising:
- the network device sends second configuration information, where the second configuration information is used to configure a pattern of the synchronization signal;
- the network device periodically sends the synchronization signal using the first frequency resource according to the period of the synchronization signal, including:
- the network device uses the first frequency resource to send the synchronization signal according to the period of the synchronization signal and the pattern of the synchronization signal.
- Embodiment 31 The method according to embodiment 30, further comprising:
- the network device uses the first frequency resource to send the first signal and/or receive the second signal at the first time domain position, and the time domain position for sending the synchronization signal represented by the pattern of the synchronization signal does not include first time domain position;
- the first signal includes one or more of the following: synchronization signal block SSB, physical downlink control channel PDCCH, physical downlink shared channel PDSCH, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS, positioning Reference signal PRS, demodulation reference signal DMRS;
- synchronization signal block SSB physical downlink control channel PDCCH, physical downlink shared channel PDSCH, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS, positioning Reference signal PRS, demodulation reference signal DMRS;
- the second signal includes one or more of the following: a demodulation reference signal DMRS, a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.
- DMRS demodulation reference signal
- PUSCH physical uplink shared channel
- PUCCH physical uplink control channel
- SRS sounding reference signal
- Embodiment 32 The method according to Embodiment 31, wherein the network device includes a first module and a second module,
- the network device sends the synchronization signal and the wake-up signal through the first module, and the network device sends the first signal and/or receives the second signal through the second module.
- Embodiment 33 The method according to any one of Embodiments 23 to 32, wherein the terminal device uses the first frequency resource to periodically receive the synchronization signal according to the period of the synchronization signal, including :
- the network device uses a first frequency resource to send the synchronization signal at a first moment according to the period of the synchronization signal, the synchronization signal is used to indicate the data rate of the wake-up signal in a first period, and the second A period of time is after the first moment.
- Embodiment 34 The method of embodiment 33, wherein,
- the length of the synchronization signal is used to indicate the data rate of the wake-up signal during the first period
- the synchronization signal includes first indication information, and the first indication information is used to indicate the data rate of the wake-up signal within the first period.
- Embodiment 35 The method according to Embodiment 34, wherein the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, and the length of the first synchronization signal is used to indicate the length of the synchronization signal
- the data rate of the wake-up signal in the first period is a first data rate
- the length of the second synchronization signal is used to indicate the data rate of the wake-up signal in the first period is a second data rate
- the The length of the first synchronization signal is smaller than the length of the second synchronization signal
- the first data rate is higher than the second data rate.
- Embodiment 36 The method according to any one of embodiments 33 to 35, wherein the first time period is located after the first moment and before the second moment, the second moment is the time of the i-th synchronization signal sent by the network device after the first time, where i is an integer greater than 1 or equal to 1.
- Embodiment 37 The method according to any one of embodiments 23 to 32, further comprising:
- the network device uses the first frequency resource to send a wake-up signal, where the wake-up signal includes second indication information, where the second indication information is used to indicate a data rate of the wake-up signal.
- Embodiment 38 The method according to Embodiment 37, wherein the second indication information is specifically used to indicate the data rate of other information in the wake-up signal except the second indication information, and the second indication information
- the data rate of the second indication information is configured or predefined by the network device.
- Embodiment 39 The method according to any one of embodiments 23 to 38, wherein the length of the synchronization signal includes the length of the first synchronization signal and the length of the second synchronization signal, and the length of the first synchronization signal The length of is less than the length of the second synchronization signal, and the period of the first synchronization signal is less than the period of the second synchronization signal.
- Embodiment 40 The method of embodiment 39, wherein,
- the period of the second synchronization signal is an integer multiple of the period of the first synchronization signal, the time interval between the network device sending the second synchronization signal and the network device sending the first synchronization signal, It is the same as the period of the first synchronization signal.
- Embodiment 41 The method of any one of embodiments 23 to 40, wherein,
- the waveform of the synchronization signal is the same as that of the wake-up signal, and/or, the modulation mode of the synchronization signal is the same as the modulation mode of the wake-up signal.
- Embodiment 42 The method of any one of embodiments 23 to 41 wherein,
- the modulation mode of the synchronization signal and the modulation mode of the wake-up signal are on-off keying OOK, and/or,
- the waveform of the synchronization signal and/or the waveform of the wake-up signal is OOK.
- Embodiment 43 The method according to any one of embodiments 23 to 42, further comprising:
- the network device uses the first frequency resource to send the wake-up signal, where the wake-up signal is used to indicate information of one or more terminal devices that need to receive paging, and the one or more terminal devices include the first Terminal Equipment;
- the network device sends first information to the first terminal device and/or receives a random access preamble from the first terminal device,
- the first information includes one or more of the following information: paging downlink control information DCI, paging message, and paging advance indication PEI.
- Embodiment 44 The method according to Embodiment 43, wherein the network device sends the first information to the first terminal device and/or receives a random access preamble from the first terminal device, include:
- the network device uses the second frequency resource to send the first information to the first terminal device and/or receive a random access preamble from the first terminal device.
- Embodiment 45 The method according to Embodiment 43 or 44, wherein the network device includes a first module and a second module,
- the network device sends the synchronization signal and the wake-up signal through the first module, and the network device sends first information to the first terminal device and/or receives information from the first terminal device through the second module.
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Abstract
Description
时域资源长度 | 周期T |
长度#1 | T#1 |
长度#2 | T#2 |
长度#3 | T#3 |
SCS | 周期T |
SCS#1 | T#1 |
SCS#2 | T#2 |
SCS#3 | T#3 |
Claims (32)
- 一种信号传输的方法,其特征在于,包括:终端设备确定同步信号的周期;所述终端设备根据所述同步信号的周期,使用第一频率资源周期性地接收所述同步信号,其中,所述第一频率资源还用于传输唤醒信号,所述唤醒信号用于指示需要接收寻呼的一个或多个终端设备的信息。
- 根据权利要求1所述的方法,其特征在于,所述同步信号的周期与所述唤醒信号的传输参数关联。
- 根据权利要求1或2所述的方法,其特征在于,所述唤醒信号的传输参数包括时域资源长度,所述时域资源长度包括第一时域资源度和第二时域资源长度,所述同步信号的第一周期与所述第一时域资源长度关联,所述同步信号的第二周期与所述第二时域资源长度关联,所述第一时域资源长度小于所述第二时域资源长度,所述第一周期小于所述第二周期。
- 根据权利要求1或2所述的方法,其特征在于,所述唤醒信号的传输参数包括子载波间隔,所述子载波间隔包括第一子载波间隔和第二子载波间隔,所述同步信号的第一周期与所述第一子载波间隔关联,所述同步信号的第二周期与所述第二子载波间隔关联,所述第一子载波间隔大于所述第二子载波间隔,所述第一周期小于所述第二周期。
- 根据权利要求1至4中任一项所述的方法,其特征在于,所述同步信号的周期是所述网络设备配置的,或者,所述同步信号的周期是标准预定义的。
- 根据权利要求5所述的方法,其特征在于,若所述同步信号的周期是所述网络设备配置,则所述方法还包括:所述终端设备接收第一配置信息,所述第一配置信息用于配置所述同步信号的周期。
- 根据权利要求1至6中任一项所述的方法,其特征在于,所述方法还包括:所述终端设备接收第二配置信息,所述第二配置信息用于配置所述同步信号的图样pattern;所述终端设备根据所述同步信号的周期,使用第一频率资源周期性地接收所述同步信号,包括:所述终端设备根据所述同步信号的周期和所述同步信号的pattern,使用所述第一频率资源接收所述同步信号。
- 根据权利要求7所述的方法,其特征在于,所述方法还包括:所述终端设备使用所述第一频率资源在所述第一时域位置接收第一信号和/或发送第二信号,所述同步信号的pattern表征的发送所述同步信号的时域位置不包括第一时域位置;其中,所述第一信号包括以下任一项:同步信号块SSB、物理下行控制信道PDCCH、物理下行共享信道PDSCH、信道状态信息参考信号CSI-RS、相位跟踪参考信号PT-RS、 定位参考信号PRS、解调参考信号DMRS;其中,所述第二信号包括以下任一项:解调参考信号DMRS、物理上行共享信道PUSCH、物理上行控制信道PUCCH、探测参考信号SRS。
- 根据权利要求8所述的方法,其特征在于,所述终端设备包括第一模块和第二模块,所述终端设备通过所述第一模块接收所述同步信号和所述唤醒信号,所述终端设备通过所述第二模块接收所述第一信号和/或发送所述第二信号。
- 根据权利要求1至9中任一项所述的方法,其特征在于,所述终端设备根据所述同步信号的周期,使用第一频率资源周期性地接收所述同步信号,包括:所述终端设备根据所述同步信号的周期,使用第一频率资源,在第一时刻接收所述同步信号,所述同步信号用于指示第一时段内所述唤醒信号的数据率,所述第一时段位于所述第一时刻之后。
- 根据权利要求10所述的方法,其特征在于,所述同步信号的长度,用于指示所述第一时段内所述唤醒信号的数据率;或者所述同步信号包括第一指示信息,所述第一指示信息用于指示所述第一时段内所述唤醒信号的数据率。
- 根据权利要求11所述的方法,其特征在于,所述同步信号的长度包括第一同步信号的长度和第二同步信号的长度,所述第一同步信号的长度用于指示所述第一时段内所述唤醒信号的数据率为第一数据率,所述第二同步信号的长度用于指示所述第一时段内所述唤醒信号的数据率为第二数据率,所述第一同步信号的长度小于所述第二同步信号的长度,所述第一数据率高于所述第二数据率。
- 根据权利要求10至12中任一项所述的方法,其特征在于,所述第一时段位于所述第一时刻之后,且位于所述第二时刻之前,所述第二时刻为所述终端设备在所述第一时刻之后接收的第i个所述同步信号的时刻,i为大于1或等于1的整数。
- 根据权利要求1至9中任一项所述的方法,其特征在于,所述方法还包括:所述终端设备使用所述第一频率资源接收唤醒信号,所述唤醒信号包括第二指示信息,其中,所述第二指示信息用于指示所述唤醒信号的数据率。
- 根据权利要求14所述的方法,其特征在于,所述第二指示信息具体用于指示所述唤醒信号中除所述第二指示信息外的其他信息的数据率,所述第二指示信息的数据率为所述网络设备配置的或者预定义的。
- 根据权利要求1至15中任一项所述的方法,其特征在于,所述同步信号的长度包括第一同步信号的长度和第二同步信号的长度,所述第一同步信号的长度小于所述第二同步信号的长度,所述第一同步信号的周期小于所述第二同步信号的周期。
- 根据权利要求16所述的方法,其特征在于,所述第二同步信号的周期为所述第一同步信号的周期的整数倍,所述终端设备接收所述第二同步信号和所述终端设备接收所述第一同步信号之间的时间间隔,与所述第一同步信号的周期相同。
- 根据权利要求1至17中任一项所述的方法,其特征在于,所述同步信号的波形与所述唤醒信号的波形相同,和/或,所述同步信号的调制方式 与所述唤醒信号的调制方式相同。
- 根据权利要求1至18中任一项所述的方法,其特征在于,所述同步信号的调制方式与所述唤醒信号的调制方式为开关键控OOK,和/或,所述同步信号的波形和/或所述唤醒信号的波形为OOK。
- 根据权利要求1至19中任一项所述的方法,其特征在于,所述方法还包括:所述终端设备使用所述第一频率资源接收来自网络设备的所述唤醒信号,所述唤醒信号用于指示的需要接收寻呼的一个或多个终端设备的信息包括所述终端设备;所述终端设备接收来自所述网络设备的第一信息和/或发起随机接入,其中,所述第一信息包括以下一项或多项信息:寻呼下行控制信息DCI,寻呼消息paging message,寻呼提前指示PEI。
- 根据权利要求20所述的方法,其特征在于,所述终端设备接收来自所述网络设备的第一信息和/或发起随机接入,包括:所述终端设备使用第二频率资源,接收来自所述网络设备的第一信息和/或发起随机接入。
- 根据权利要求20或21所述的方法,其特征在于,所述终端设备包括第一模块和第二模块,所述终端设备通过所述第一模块接收所述同步信号和所述唤醒信号,所述终端设备通过所述第二模块接收所述第一信息和/或发起随机接入。
- 一种信号传输的方法,其特征在于,包括:网络设备确定同步信号的周期;所述网络设备根据所述同步信号的周期,使用第一频率资源周期性地发送所述同步信号,其中,所述第一频率资源还用于传输唤醒信号,所述唤醒信号用于指示需要接收寻呼的一个或多个终端设备的信息。
- 根据权利要求23所述的方法,其特征在于,所述同步信号的周期与所述唤醒信号的传输参数关联。
- 根据权利要求24所述的方法,其特征在于,所述方法还包括:所述网络设备广播系统信息,所述系统信息包括所述唤醒信号的传输参数。
- 根据权利要求23至25中任一项所述的方法,其特征在于,所述方法还包括:所述网络设备使用所述第一频率资源发送所述唤醒信号,所述唤醒信号用于指示的需要接收寻呼的一个或多个终端设备的信息,所述一个或多个终端设备包括第一终端设备;所述网络设备向所述第一终端设备发送第一信息和/或接收来自所述第一终端设备的随机接入前导序列,其中,所述第一信息包括以下一项或多项信息:寻呼下行控制信息DCI,寻呼消息paging message,寻呼提前指示PEI。
- 根据权利要求26所述的方法,其特征在于,所述网络设备向所述第一终端设备发送第一信息和/或接收来自所述第一终端设备的随机接入前导序列,包括:所述网络设备使用第二频率资源,向所述第一终端设备发送第一信息和/或接收来自所述第一终端设备的随机接入前导序列。
- 根据权利要求26或27所述的方法,其特征在于,所述网络设备包括第一模块和 第二模块,所述网络设备通过所述第一模块发送所述同步信号和所述唤醒信号,所述网络设备通过所述第二模块向所述第一终端设备发送第一信息和/或接收来自所述第一终端设备的随机接入前导序列。
- 一种通信的装置,其特征在于,包括用于执行权利要求1至22中任一项所述的方法的模块或单元,或者,包括用于执行权利要求23至28中任一项所述的方法的模块或单元。
- 一种通信的装置,其特征在于,包括处理器,所述处理器,用于执行存储器中存储的计算机程序或指令,以使得所述装置执行权利要求1至22中任一项所述的方法,或者,以使得所述装置执行权利要求23至28中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质上存储有计算机程序或指令,当所述计算机程序或指令在计算机上运行时,使得所述计算机执行如权利要求1至22中任一项所述的方法,或者,使得所述计算机执行如权利要求23至28中任一项所述的方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品包括用于执行如权利要求1至22中任一项所述的方法的计算机程序或指令,或者,所述计算机程序产品包括用于执行如权利要求23至28中任一项所述的方法的计算机程序或指令。
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