WO2024164971A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2024164971A1
WO2024164971A1 PCT/CN2024/075746 CN2024075746W WO2024164971A1 WO 2024164971 A1 WO2024164971 A1 WO 2024164971A1 CN 2024075746 W CN2024075746 W CN 2024075746W WO 2024164971 A1 WO2024164971 A1 WO 2024164971A1
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WIPO (PCT)
Prior art keywords
terminal device
wus
pdcch
monitoring
time
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PCT/CN2024/075746
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English (en)
French (fr)
Inventor
薛祎凡
邝奕如
薛丽霞
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华为技术有限公司
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Publication of WO2024164971A1 publication Critical patent/WO2024164971A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technology, and in particular to a communication method and device.
  • the terminal device uses the same receiving module (or receiver, or receiving circuit) to receive any downlink signal from the network device.
  • the module that completes these functions (or performs related steps) can be called a main circuit.
  • the terminal device uses the main circuit to receive downlink signals, the power consumption is high.
  • the terminal device can use a separate low-power circuit to receive part of the downlink signal.
  • This small circuit can be called a wake-up circuit or a low-power circuit or a wake-up radio circuit (low power wake up radio, LP-WUR) or other names.
  • the downlink signal received by the wake-up circuit can be called a low power wake-up signal (low power wake up signal, LP-WUS) (also called a wake-up signal).
  • LP-WUS can be used to carry paging-related information.
  • LP-WUS can be used to carry scheduling-related information.
  • LP-WUS is used to indicate whether the terminal device needs to open the main circuit to receive scheduling information (such as whether it needs to monitor the physical downlink control channel (PDCCH)).
  • PDCCH physical downlink control channel
  • This application provides a solution for terminal equipment to monitor LP-WUS.
  • the present application provides a communication method, which can be applied to a terminal device, a processor, a chip or a functional module in the terminal device.
  • the method may include: the terminal device determines whether the conditions for monitoring a low power wake-up signal LP-WUS are met; the terminal device monitors the LP-WUS after determining that the conditions for monitoring the LP-WUS are met.
  • the LP-WUS is used to wake up the terminal device.
  • the method for the terminal device to determine whether the condition for monitoring the LP-WUS is met may be: the terminal device may receive first information from a network device, and the first information is used to instruct the terminal device to monitor the LP-WUS. In this way, the network device may directly instruct the terminal device to monitor the LP-WUS through the first information, which is relatively simple to implement and can avoid the terminal device and the network device being unable to align whether to monitor the LP-WUS due to missed detection of scheduling information.
  • the method for the terminal device to determine that the condition for monitoring the LP-WUS is met may be: the terminal device determines that scheduling information has not been received from the network device within a first time period. In this way, the terminal device can determine that it can monitor the LP-WUS based on whether the scheduling information is received, thereby saving signaling overhead.
  • the terminal device determines that the condition for monitoring the LP-WUS is met, and may also include the following method: the terminal device determines that a first channel quality parameter is greater than or equal to a first threshold, and the first channel quality parameter is at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), LP-WUS detection probability, or low-power synchronization signal (LP-SS) detection probability.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • LP-SS low-power synchronization signal
  • the terminal device may start monitoring the LP-WUS at the first moment. In this way, it is possible to determine when the terminal device starts monitoring the LP-WUS, which is beneficial for the terminal device and the network device to align the time when the terminal device starts monitoring the LP-WUS.
  • the first moment is related to the second moment, and the second moment may be the moment when the terminal device receives the first information, or the end moment of the first duration.
  • the time position of the first moment can be determined based on the second moment.
  • the terminal device when the terminal device monitors the LP-WUS, the terminal device can determine whether a condition for monitoring the PDCCH is met; when the terminal device determines that the condition for monitoring the PDCCH is met, the terminal device monitors the PDCCH. In this way, it can be determined under what circumstances the terminal device should monitor the PDCCH when monitoring the LP-WUS.
  • the terminal device determines that the conditions for monitoring the PDCCH are met, and the method may be: satisfying the first condition and/or the second condition.
  • the first condition may include: the terminal device monitors the LP-WUS from the network device; or the terminal device sends uplink service information; or the terminal device does not monitor the LP-WUS within a second time period.
  • the second condition includes: the terminal device determines that a second channel quality parameter is less than or equal to a second threshold, and the second channel quality parameter is at least one of the following: RSRP, RSRQ, LP-WUS detection probability, or LP-SS detection probability. In this way, it can be determined how the terminal device starts monitoring the PDCCH.
  • the terminal device may start monitoring the PDCCH at the third moment. In this way, it is possible to determine when the terminal device may start monitoring the PDCCH, which is beneficial for the terminal device and the network device to align the time when the terminal device starts monitoring the PDCCH.
  • the terminal device may send feedback information to the network device after a third moment, wherein the feedback information is used to indicate that the terminal device does not monitor the LP-WUS or that the terminal device starts to monitor the PDCCH. In this way, the network device and the terminal device can align the time when the terminal device starts to monitor the PDCCH.
  • the third moment is related to the fourth moment, and the fourth moment may be the moment when the terminal device monitors the LP-WUS, or the moment when the uplink service information transmission is completed, or the end moment of the second duration. In this way, it is possible to determine when the terminal device starts to monitor the PDCCH, which is conducive to aligning the time when the terminal device starts to monitor the PDCCH with the network device.
  • the terminal device is configured with connected discontinuous reception (C-DRX), and the terminal device may monitor the LP-WUS within the activation time without monitoring the PDCCH.
  • C-DRX connected discontinuous reception
  • the specific behavior of the terminal device in monitoring the LP-WUS can be determined when the terminal device is configured with C-DRX.
  • the terminal device monitors the LP-WUS it does not monitor the PDCCH even within the activation time, which is beneficial to saving power consumption of the terminal device.
  • the terminal device is configured with connected discontinuous reception C-DRX; the terminal device can monitor the LP-WUS within the activation time or outside the activation time; if the terminal device monitors the LP-WUS within the activation time, the terminal device monitors the PDCCH after a third time period from the moment the LP-WUS is monitored; or, if the terminal device monitors the LP-WUS outside the activation time, the terminal device monitors the PDCCH after a fourth time period from the moment the LP-WUS is monitored; wherein the third time period and the fourth time period are the same or different.
  • the terminal device is configured with C-DRX, the specific behavior of the terminal device in monitoring the LP-WUS and the method of starting to monitor the PDCCH can be determined.
  • the activation time may include at least one of the following: the time of at least one of a DRX ON period timer, a DRX inactivity timer, a DRX downlink retransmission timer, a DRX uplink retransmission timer, or a random access contention resolution timer that is running; or, the time when a scheduling request has been sent on a physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives a random access response to a random access preamble, the time when a new transmission indicated by a PDCCH addressed by a cell radio network temporary identifier (C-RNTI) of a media access control (MAC) entity has not been received, wherein the random access preamble is not selected by the MAC entity in a contention-based random access preamble.
  • C-RNTI cell radio network temporary identifier
  • MAC media access control
  • the terminal device after the terminal device detects the LP-WUS, it can stop monitoring the LP-WUS and start a first timer, and the activation time includes the time when the first timer runs. In this way, after the terminal device detects the LP-WUS, the terminal device can be immediately in the activation time, thereby reducing the delay of the terminal device monitoring the PDCCH.
  • the terminal device starts monitoring the PDCCH during the time when the first timer runs within the activation time. In this way, the terminal device can start monitoring the PDCCH immediately after the terminal device detects the LP-WUS, thereby reducing the delay of the terminal device monitoring the PDCCH.
  • the terminal device After the terminal device detects the LP-WUS, it stops monitoring the LP-WUS and starts monitoring the PDCCH at the activation time closest to the moment when the LP-WUS is detected. In this way, no additional timer needs to be introduced, and the complexity of implementing PDCCH monitoring is low.
  • the terminal device is configured to monitor downlink control information scrambled by power saving radio network temporary identifier (DCI with cyclic redundancy check scrambled by power saving radio network temporary identifier, DCP); When the terminal device monitors the LP-WUS, it does not monitor the DCP. Thus, the specific behavior of the terminal device in monitoring the LP-WUS can be determined when the terminal device is configured with the DCP.
  • DCI power saving radio network temporary identifier
  • DCP power saving radio network temporary identifier
  • the terminal device determines not to start the DRX ON period timer.
  • the specific behavior of the terminal device in monitoring the LP-WUS can be determined when the terminal device is configured with the DCP.
  • the terminal device monitors the LP-WUS, it does not monitor the DCP, which is conducive to saving power consumption of the terminal device.
  • the terminal device determines not to start the DRX ON period timer, and the method may be: the physical layer of the terminal device sends a first indication information to the media access control layer of the terminal device, and the first indication information is used to indicate that the decoding result of the DCP is 0; the media access control layer of the terminal device determines not to start the DRX ON period timer according to the first indication information; or the media access control layer of the terminal device determines not to start the DRX ON period timer according to the terminal device monitoring the LP-WUS. In this way, the terminal device can determine the specific method of not starting the DRX ON period timer.
  • the terminal device when the terminal device monitors the LP-WUS, the terminal device does not monitor the PDCCH monitoring adaptive indication information, and the PDCCH monitoring adaptive indication information is used to indicate skipping at least one of the PDCCH or the search space group switching.
  • the specific behavior of the terminal device in monitoring the LP-WUS can be determined when the terminal device is configured with the PDCCH monitoring adaptive indication information.
  • the PDCCH monitoring adaptive indication information is not monitored, which is conducive to saving power consumption of the terminal device.
  • the LP-WUS is used to wake up the terminal device
  • the method may be: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and the first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and the second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal
  • the terminal device after the terminal device detects the LP-WUS, it monitors the PDCCH within the fifth time period; if the PDCCH of the network device is not received within the fifth time period, the terminal device starts to monitor the LP-WUS; wherein the fifth time period may be included in the LP-WUS, or the fifth time period may be included in the configuration information of the LP-WUS.
  • the delay of monitoring the LP-WUS can be reduced based on the fifth time period, and on the other hand, the scheduling time of the network device can be constrained to avoid the terminal device starting the main circuit to monitor the PDCCH for a long time, which is beneficial to the energy saving of the terminal device.
  • the terminal device before the terminal device monitors the LP-WUS, the terminal device receives configuration information of the LP-WUS from the network device, thereby enabling the terminal device to accurately obtain relevant configurations of the LP-WUS.
  • the LP-WUS adopts on-off keying (OOK) OOK modulation, or frequency shift keying (FSK) modulation, or a combination of OOK and FSK modulation, thereby reducing the power consumption of the wake-up circuit of the terminal device.
  • OOK on-off keying
  • FSK frequency shift keying
  • the LP-WUS is received by a first circuit of the terminal device, and the PDCCH is received by a second circuit of the terminal device, and the first circuit and the second circuit are different, thereby reducing power consumption of the terminal device.
  • the present application provides a communication method, which can be applied to a network device, a processor, a chip or a functional module in the network device.
  • the method may include: the network device determines whether the terminal device meets the conditions for monitoring the low-power wake-up signal LP-WUS; when the network device determines that the terminal device meets the conditions for monitoring the LP-WUS and there is a LP-WUS sending requirement, the LP-WUS is sent to the terminal device. Among them, the LP-WUS is used to wake up the terminal device. Based on this, the network device can determine when the LP-WUS can be sent to the terminal device. Among them, in the present application, when the network device has a LP-WUS sending requirement, the LP-WUS is sent to the terminal device, which can be understood as the network device determining that the terminal device monitors the LP-WUS.
  • the network device determines that the terminal device meets the condition for monitoring the LP-WUS, and the method may be: the network device sends first information to the terminal device, and the first information is used to instruct the terminal device to monitor the LP-WUS.
  • the network device can directly instruct the terminal device to monitor the LP-WUS through the first information, which is relatively simple to implement and can avoid the terminal device and the network device being unable to align whether to monitor the LP-WUS due to missed detection of scheduling information.
  • the network device determines that scheduling information has not been sent to the terminal device within the first time period.
  • the network device can determine when to send LP-WUS based on whether to send scheduling information, thereby saving signaling overhead.
  • the network device determines that the terminal device meets the conditions for monitoring the LP-WUS, and also includes the following method: the network device receives first channel feedback information from the terminal device, the first channel feedback information is used to indicate that a first channel quality parameter is greater than or equal to a first threshold, and the first channel quality parameter is at least one of the following: RSRP, RSRQ, LP-WUS detection probability or LP-SS detection probability.
  • the network device can further determine whether the LP-WUS can be sent based on the current channel actual situation, so as to avoid the failure of LP-WUS sending due to poor channel conditions.
  • the network device when the network device has a LP-WUS sending requirement, the network device sends the LP-WUS to the terminal device.
  • the method may be: the network device may start at the first moment and send the LP-WUS to the terminal device when the LP-WUS sending requirement is met. In this way, it is possible to determine when the network device can start sending the LP-WUS, which is conducive to aligning the time when the terminal device starts monitoring the LP-WUS with the network device.
  • the first moment is related to the second moment, and the second moment is the moment when the network device sends the first information, or the end moment of the first duration.
  • the time position of the first moment can be determined based on the second moment, so as to determine when the network device can start sending LP-WUS, which is conducive to aligning the time when the terminal device starts monitoring LP-WUS with the network device.
  • the network device after the network device determines that the terminal device meets the conditions for monitoring the LP-WUS, it can determine whether the terminal device meets the conditions for monitoring the downlink control channel PDCCH; after the network device determines that the terminal device meets the conditions for monitoring the PDCCH and there is a need to send PDCCH, it sends the PDCCH to the terminal device. In this way, it can be determined under what circumstances the network device can send PDCCH.
  • the network device when the network device has a need to send PDCCH, it sends the PDCCH to the terminal device, which can be understood as the network device determining that the terminal device monitors PDCCH.
  • the network device determines that the terminal device meets the condition for monitoring the PDCCH, and the method may be: satisfying the first condition and/or the second condition; wherein the first condition may include: when the network device has the LP-WUS sending requirement, sending the LP-WUS to the terminal device; or, the network device receives uplink service information; or, the network device does not send the LP-WUS within a second time period; the second condition may include: the network device receives second channel feedback information from the terminal device, the second channel feedback information is used to indicate that the second channel quality parameter is less than or equal to a second threshold, and the second channel quality parameter is at least one of the following: RSRP, RSRQ, LP-WUS detection probability or LP-SS detection probability. In this way, it can be determined how the network device can send the PDCCH.
  • the first condition may include: when the network device has the LP-WUS sending requirement, sending the LP-WUS to the terminal device; or, the network device receives uplink service information; or, the
  • the network device when the network device has a PDCCH transmission requirement, transmits the PDCCH to the terminal device.
  • the method may be: the network device may start at a third moment and transmit the PDCCH to the terminal device when the network device has a PDCCH transmission requirement. In this way, it is possible to determine when the network device can start transmitting the PDCCH, which is beneficial for the terminal device and the network device to align the time when the terminal device starts monitoring the PDCCH.
  • the network device when the network device has a PDCCH transmission requirement, before transmitting the PDCCH to the terminal device, the network device receives feedback information from the terminal device after a third moment, and the feedback information is used to instruct the terminal device not to monitor the LP-WUS or the terminal device to start monitoring the PDCCH. In this way, the network device and the terminal device can align the time when the terminal device starts monitoring the PDCCH.
  • the third moment is related to the fourth moment, and the fourth moment may be the moment when the network device sends the LP-WUS, or the moment when the uplink service information transmission is completed, or the end moment of the second duration. In this way, it can be determined when the network device can start sending the PDCCH, which is conducive to aligning the time when the terminal device starts monitoring the PDCCH with the network device.
  • the terminal device is configured with C-DRX; when the network device is within the activation time and there is a demand to send the LP-WUS, when sending the LP-WUS to the terminal device, it does not send the PDCCH to the terminal device.
  • This can determine the specific behavior of the network device in sending the LP-WUS when the terminal device is configured with C-DRX.
  • the network device monitors the LP-WUS, the network device does not send the PDCCH even within the activation time, so that the terminal device does not need to monitor the PDCCH, which is beneficial to saving power consumption of the terminal device.
  • the terminal device is configured with C-DRX; the network device sends the LP-WUS to the terminal device when there is a need to send the LP-WUS within the activation time or outside the activation time; if the network device sends the LP-WUS within the activation time, the network device determines that after a third time period from the moment of sending the LP-WUS, when there is a need to send the PDCCH, it sends the PDCCH to the terminal device; or, if the network device sends the LP-WUS outside the activation time, the network device determines that after a fourth time period from the moment of sending the LP-WUS, when there is a need to send the PDCCH, it sends the PDCCH to the terminal device.
  • the terminal device sends the PDCCH; wherein the third duration is the same as or different from the fourth duration.
  • the terminal device is configured with C-DRX, the specific behavior of the network device in sending LP-WUS and the method of sending PDCCH can be determined.
  • the activation time may include at least one of the following: the time of at least one of the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer that is running; or, the time when the scheduling request has been sent on the physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives the random access response of the random access preamble, the time when the new transmission indicated by the PDCCH addressed by the cell radio network temporary identifier C-RNTI of the media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in the contention-based random access preamble. This allows the network device to determine which times belong to the activation time.
  • the network device after the network device sends the LP-WUS to the terminal device, the network device does not send the LP-WUS to the terminal device and starts a first timer, and the activation time includes the time when the first timer runs. In this way, after the network device sends the LP-WUS, the terminal device can be immediately in the activation time, thereby reducing the delay of the terminal device monitoring the PDCCH.
  • the network device when the network device determines that there is a need to send PDCCH within the time when the first timer runs within the activation time, the network device sends PDCCH to the terminal device. In this way, the terminal device can immediately start monitoring PDCCH after the network device sends LP-WUS, thereby reducing the delay of the terminal device monitoring PDCCH.
  • the network device after the network device sends the LP-WUS to the terminal device, the network device does not send the LP-WUS to the terminal device and sends the PDCCH to the terminal device when there is a PDCCH sending requirement starting from the activation time closest to the time when the network device sends the LP-WUS. In this way, no additional timer needs to be introduced, and the complexity of implementing PDCCH sending is low.
  • the terminal device is configured to monitor the downlink control information DCP scrambled by the power saving wireless network temporary identifier; when the network device determines that there is a need to send the LP-WUS, when sending the LP-WUS to the terminal device, the DCP is not sent to the terminal device. In this way, the specific behavior of the network device in sending the LP-WUS can be determined when the terminal device is configured with the DCP.
  • the network device determines that the DRX ON period timer is not started. This can determine the specific behavior of the network device sending LP-WUS when the terminal device is configured with DCP. At the same time, when the terminal device monitors LP-WUS, it does not monitor DCP, which is conducive to saving power consumption of the terminal device.
  • the network device when the network device has the LP-WUS sending requirement, when sending the LP-WUS to the terminal device, PDCCH monitoring adaptive indication information is not sent to the terminal device, and the PDCCH monitoring adaptive indication information is used to indicate skipping of at least one of PDCCH or search space group switching.
  • the specific behavior of the network device in sending LP-WUS can be determined when the terminal device is configured with PDCCH monitoring adaptive indication information.
  • the terminal device monitors LP-WUS, it does not monitor PDCCH monitoring adaptive indication information, which is beneficial to saving power consumption of the terminal device.
  • the LP-WUS is used to wake up the terminal device
  • the method may include: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and the first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and the second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal
  • the network device after the network device sends the LP-WUS to the terminal device, the network device sends PDCCH to the terminal device when there is a need to send PDCCH within the fifth time period; when the network device determines that if PDCCH has not been sent to the terminal device within the fifth time period, the network device sends the LP-WUS to the terminal device when there is a need to send LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the delay of the terminal device in monitoring LP-WUS can be reduced based on the fifth time period.
  • it can also constrain the scheduling time of the network device, avoiding the terminal device from opening the main circuit to monitor PDCCH for a long time, which is beneficial to energy saving of the terminal device.
  • the network device when the network device determines that the terminal device meets the condition for monitoring the LP-WUS and has a LP-WUS sending requirement, before sending the LP-WUS to the terminal device, the network device sends the LP-WUS to the terminal device.
  • the configuration information of LP-WUS is described.
  • the terminal device can accurately obtain the relevant configuration of LP-WUS.
  • the LP-WUS adopts on-off keying OOK modulation, or frequency shift keying FSK modulation, or a combination of OOK and FSK modulation, thereby reducing the power consumption of the wake-up circuit of the terminal device.
  • the present application provides a communication method, which can be applied to a terminal device, a processor, a chip or a functional module in the terminal device.
  • the method may include: the terminal device is configured with C-DRX by a network device; the terminal device monitors LP-WUS within the activation time, and deactivates the monitoring of PDCCH within the activation time.
  • the LP-WUS is used to wake up the terminal device.
  • the specific behavior of the terminal device monitoring LP-WUS can be determined when the terminal device is configured with C-DRX.
  • the terminal device monitors the LP-WUS it does not monitor the PDCCH even within the activation time, which is conducive to saving power consumption of the terminal device.
  • the activation time may include at least one of the following: the time of at least one of the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer that is running; or, the time when the scheduling request has been sent on the physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives the random access response of the random access preamble, the time when the new transmission indicated by the PDCCH addressed by the cell radio network temporary identifier C-RNTI of the media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in the contention-based random access preamble. This allows the terminal device to determine which times belong to the activation time.
  • the terminal device if the terminal device detects the LP-WUS within the activation time, the terminal device monitors the PDCCH after the third time period from the moment the LP-WUS is detected; alternatively, the terminal device may also monitor the LP-WUS outside the activation time; if the terminal device detects the LP-WUS outside the activation time, the terminal device monitors the PDCCH after the fourth time period from the moment the LP-WUS is detected; wherein the third time period and the fourth time period are the same or different.
  • the terminal device is configured with C-DRX, the specific behavior of the terminal device in monitoring the LP-WUS and the method of starting to monitor the PDCCH can be determined.
  • the terminal device after the terminal device detects the LP-WUS, it stops monitoring the LP-WUS and starts a first timer, and the activation time includes the time when the first timer runs. In this way, after the terminal device detects the LP-WUS, the terminal device can be immediately in the activation time, thereby reducing the delay of the terminal device monitoring the PDCCH.
  • the terminal device starts monitoring the PDCCH during the time when the first timer runs within the activation time. In this way, the terminal device can start monitoring the PDCCH immediately after the terminal device detects the LP-WUS, thereby reducing the delay of the terminal device monitoring the PDCCH.
  • the terminal device After the terminal device detects the LP-WUS, it stops monitoring the LP-WUS and starts monitoring the PDCCH at the activation time closest to the moment when the LP-WUS is detected. In this way, no additional timer needs to be introduced, and the complexity of implementing PDCCH monitoring is low.
  • the terminal device is configured to monitor the downlink control information DCP scrambled by the power saving radio network temporary identifier; when the terminal device monitors the LP-WUS, it does not monitor the DCP. Thus, it can be determined that when the terminal device is configured with the DCP, the specific behavior of the terminal device monitoring the LP-WUS.
  • the terminal device determines not to start the DRX ON period timer.
  • the specific behavior of the terminal device in monitoring the LP-WUS can be determined when the terminal device is configured with the DCP.
  • the terminal device monitors the LP-WUS, it does not monitor the DCP, which is conducive to saving power consumption of the terminal device.
  • the terminal device determines not to start the DRX ON period timer, and the method may be: the physical layer of the terminal device sends a first indication information to the media access control layer of the terminal device, and the first indication information is used to indicate that the decoding result of the DCP is 0; the media access control layer of the terminal device determines not to start the DRX ON period timer according to the first indication information; or the media access control layer of the terminal device determines not to start the DRX ON period timer according to the terminal device monitoring the LP-WUS. In this way, the terminal device can determine the specific method of not starting the DRX ON period timer.
  • the terminal device when the terminal device monitors the LP-WUS, the terminal device does not monitor the PDCCH monitoring adaptive indication information, and the PDCCH monitoring adaptive indication information is used to indicate skipping at least one of the PDCCH or the search space group switching.
  • the specific behavior of the terminal device in monitoring the LP-WUS can be determined when the terminal device is configured with the PDCCH monitoring adaptive indication information.
  • the PDCCH monitoring adaptive indication information is not monitored, which is conducive to saving power consumption of the terminal device.
  • the LP-WUS is used to wake up the terminal device, and the method may be: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes the terminal Partial information of the identification of the terminal device, partial information of the identification of the terminal device and the first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identification of the terminal device; or, the LP-WUS includes partial information of the identification of the terminal device group, partial information of the identification of the terminal device group and the second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identification of the terminal device group; or, the LP-WUS includes the identification of the terminal device group, the identification of the terminal device group is used to wake up the terminal device group, and the terminal device group includes the terminal device; or, the LP-WUS
  • the terminal device after the terminal device detects the LP-WUS, it monitors the PDCCH within the fifth time period; if the PDCCH of the network device is not received within the fifth time period, the terminal device starts to monitor the LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the delay of monitoring the LP-WUS can be reduced based on the fifth time period, and on the other hand, the scheduling time of the network device can be constrained to avoid the terminal device starting the main circuit to monitor the PDCCH for a long time, which is beneficial to the energy saving of the terminal device.
  • the terminal device may receive configuration information of the LP-WUS from a network device, thereby enabling the terminal device to accurately obtain relevant configurations of the LP-WUS.
  • the LP-WUS adopts on-off keying OOK modulation, frequency shift keying FSK modulation, or a combination of OOK and FSK modulation, thereby reducing the power consumption of the wake-up circuit of the terminal device.
  • the LP-WUS is received by a first circuit of the terminal device, and the PDCCH is received by a second circuit of the terminal device, and the first circuit and the second circuit are different, thereby reducing power consumption of the terminal device.
  • the present application provides a communication method, which can be applied to a network device, a processor, a chip or a functional module in a network device.
  • the method may include: the network device configures C-DRX for a terminal device; when the network device has a low-power wake-up signal LP-WUS sending requirement within the activation time, the LP-WUS is sent to the terminal device; the LP-WUS is used to wake up the terminal device and deactivate the sending of PDCCH.
  • the specific behavior of the network device sending LP-WUS when the terminal device is configured with C-DRX can be determined.
  • the network device does not send PDCCH even within the activation time, so that the terminal device does not need to monitor PDCCH, which is beneficial to saving power consumption of the terminal device.
  • the activation time may include at least one of the following: the time of at least one of the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer that is running; or, the time when the scheduling request has been sent on the physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives the random access response of the random access preamble, the time when the new transmission indicated by the PDCCH addressed by the cell radio network temporary identifier C-RNTI of the media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in the contention-based random access preamble. This allows the network device to determine which times belong to the activation time.
  • the network device determines to send PDCCH to the terminal device when there is a PDCCH sending demand after the third time period from the time of sending the LP-WUS; or, the network device can also send the LP-WUS to the terminal device when there is a PDCCH sending demand outside the activation time; if the network device sends the LP-WUS outside the activation time, the network device determines to send PDCCH to the terminal device when there is a PDCCH sending demand after the fourth time period from the time of sending the LP-WUS; wherein the third time period and the fourth time period are the same or different. In this way, when the terminal device is configured with C-DRX, the specific behavior of the network device in sending LP-WUS and the method in which PDCCH can be sent can be determined.
  • the network device after the network device sends the LP-WUS to the terminal device, it is determined not to send the LP-WUS to the terminal device and a first timer is started, and the activation time includes the time when the first timer runs. In this way, after the network device sends the LP-WUS, the terminal device can be immediately in the activation time, thereby reducing the delay of the terminal device monitoring the PDCCH.
  • the network device when the network device determines that there is a need to send PDCCH within the time when the first timer runs within the activation time, the network device sends the PDCCH to the terminal device. In this way, the terminal device can immediately start monitoring PDCCH after the network device sends LP-WUS, thereby reducing the delay of the terminal device monitoring PDCCH.
  • the network device after the network device sends the LP-WUS to the terminal device, the network device does not send the LP-WUS to the terminal device and sends the PDCCH to the terminal device when there is a PDCCH sending requirement starting from the activation time closest to the time when the network device sends the LP-WUS. In this way, no additional timer needs to be introduced, and the complexity of implementing PDCCH sending is low.
  • the terminal device is configured to monitor the downlink control information DCP scrambled by the power saving wireless network temporary identifier; when the network device determines that there is a need to send the LP-WUS, when sending the LP-WUS to the terminal device, the DCP is not sent to the terminal device. In this way, the specific behavior of the network device in sending the LP-WUS can be determined when the terminal device is configured with the DCP.
  • the network device determines that the DRX ON period timer is not started. This can determine the specific behavior of the network device sending LP-WUS when the terminal device is configured with DCP. At the same time, when the terminal device monitors LP-WUS, it does not monitor DCP, which is conducive to saving power consumption of the terminal device.
  • the network device determines that there is a need to send the LP-WUS
  • PDCCH monitoring adaptive indication information is not sent to the terminal device
  • the PDCCH monitoring adaptive indication information is used to indicate skipping of at least one of PDCCH or search space group switching.
  • the specific behavior of the network device in sending the LP-WUS can be determined when the terminal device is configured with the PDCCH monitoring adaptive indication information.
  • the terminal device monitors the LP-WUS, it does not monitor the PDCCH monitoring adaptive indication information, which is beneficial to saving power consumption of the terminal device.
  • the LP-WUS is used to wake up the terminal device
  • the method may be: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and the first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and the second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal
  • the network device after the network device sends the LP-WUS to the terminal device, the network device sends the PDCCH to the terminal device when there is a need to send PDCCH within the fifth time period; when the network device determines that if PDCCH has not been sent to the terminal device within the fifth time period, the network device sends the LP-WUS to the terminal device when there is a need to send LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the delay of the terminal device in monitoring LP-WUS can be reduced based on the fifth time period.
  • it can also constrain the scheduling time of the network device, avoiding the terminal device from opening the main circuit to monitor PDCCH for a long time, which is beneficial to energy saving of the terminal device.
  • the network device when the network device has a LP-WUS transmission requirement within the activation time, before transmitting the LP-WUS to the terminal device, the network device transmits the LP-WUS configuration information to the terminal device, thereby enabling the terminal device to accurately obtain the relevant configuration of the LP-WUS.
  • the LP-WUS adopts on-off keying OOK modulation, frequency shift keying FSK modulation, or a combination of OOK and FSK modulation, thereby reducing the power consumption of the wake-up circuit of the terminal device.
  • the present application further provides a communication device, which may be a terminal device, and which has the function of implementing the method in the first aspect or each possible design example of the first aspect, or the third aspect or each possible design example of the third aspect.
  • the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device includes a transceiver unit and a processing unit, which can perform the corresponding functions in the above-mentioned first aspect or each possible design example of the first aspect, or the third aspect or each possible design example of the third aspect.
  • a transceiver unit and a processing unit, which can perform the corresponding functions in the above-mentioned first aspect or each possible design example of the first aspect, or the third aspect or each possible design example of the third aspect.
  • the structure of the communication device includes a transceiver and a processor, and optionally also includes a memory
  • the transceiver is used to send and receive signals, and is used to communicate and interact with other devices in the communication system
  • the processor is configured to support the communication device to perform the corresponding functions in the first aspect or each possible design example of the first aspect, or in the third aspect or each possible design example of the third aspect.
  • the memory is coupled to the processor, and stores the necessary program instructions and data for the communication device.
  • the present application further provides a communication device, which may be a network device, and which has the function of implementing the method in the second aspect or each possible design example of the second aspect, or the fourth aspect or each possible design example of the fourth aspect.
  • the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device includes a transceiver unit and a processing unit, which can execute the above-mentioned
  • a transceiver unit and a processing unit, which can execute the above-mentioned
  • the structure of the communication device includes a transceiver and a processor, and optionally a memory
  • the transceiver is used to send and receive signals, and to communicate and interact with other devices in the communication system
  • the processor is configured to support the communication device to perform the corresponding functions in the second aspect or each possible design example of the second aspect, or in the fourth aspect or each possible design example of the fourth aspect.
  • the memory is coupled to the processor, and stores the necessary program instructions and data for the communication device.
  • an embodiment of the present application provides a communication system, which may include the terminal device and network device mentioned above, etc.
  • a computer-readable storage medium provided by an embodiment of the present application stores program instructions, and when the program instructions are run on a computer, the computer executes the method described in the first aspect of the embodiment of the present application and any possible design thereof, or in the second aspect and any possible design thereof, or in the third aspect and any possible design thereof, or in the fourth aspect and any possible design thereof.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer.
  • the computer-readable medium may include a non-transient computer-readable medium, a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a CD-ROM or other optical disk storage, a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM or other optical disk storage a CD-ROM or other optical disk storage
  • disk storage medium or other magnetic storage device or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer.
  • an embodiment of the present application provides a computer program product, including computer program codes or instructions.
  • the computer program codes or instructions are run on a computer, the method described in the first aspect or any possible design of the first aspect, or the second aspect or any possible design of the second aspect, or the third aspect or any possible design of the third aspect, or the fourth aspect or any possible design of the fourth aspect is executed.
  • the present application also provides a chip, including a processor, which is coupled to a memory and is used to read and execute program instructions stored in the memory, so that the chip implements the method described in the above-mentioned first aspect or any possible design of the first aspect, or the above-mentioned second aspect or any possible design of the second aspect, or the above-mentioned third aspect or any possible design of the third aspect, or the above-mentioned fourth aspect or any possible design of the fourth aspect.
  • a chip including a processor, which is coupled to a memory and is used to read and execute program instructions stored in the memory, so that the chip implements the method described in the above-mentioned first aspect or any possible design of the first aspect, or the above-mentioned second aspect or any possible design of the second aspect, or the above-mentioned third aspect or any possible design of the third aspect, or the above-mentioned fourth aspect or any possible design of the fourth aspect.
  • FIG1 is a schematic diagram of the architecture of a communication system provided by the present application.
  • FIG2 is a schematic diagram of a terminal device provided by the present application receiving a wake-up signal through a wake-up circuit
  • FIG3 is a waveform diagram of a signal provided by the present application.
  • FIG4 is a schematic diagram of an FSK signal waveform with information 0101 provided by the present application.
  • FIG5 is a schematic diagram of a DRX cycle provided by the present application.
  • FIG6 is a schematic diagram of a DCP indication meaning provided by the present application.
  • FIG7 is a schematic diagram of skipping PDCCH monitoring provided by the present application.
  • FIG8 is a schematic diagram of a search space switching provided by the present application.
  • FIG9 is a flow chart of a communication method provided by the present application.
  • FIG10 is a schematic diagram of a possible time domain location for sending LP-WUS provided by the present application.
  • FIG11 is a schematic diagram of a first time delay provided by the present application.
  • FIG12 is a schematic diagram of a terminal device monitoring PDCCH provided by the present application.
  • FIG13 is a flow chart of another communication method provided by the present application.
  • FIG14 is a schematic diagram of the structure of a communication device provided by the present application.
  • FIG15 is a structural diagram of a communication device provided in the present application.
  • the embodiment of the present application provides a communication method and device, and provides a solution for monitoring LP-WUS.
  • the method and device described in the present application are based on the same technical concept. Since the principles of solving problems by the method and device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.
  • At least one means one or more, and more means two or more.
  • At least one of the following or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • at least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, c can be single or plural.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • "/" means “or", for example, a/b means a or b.
  • FIG1 shows the architecture of a communication system involved in an embodiment of the present application, wherein the architecture of the communication system includes a network device and a terminal device.
  • the network device may be a device with a wireless transceiver function or a chip that may be provided in the network device, and the network device includes but is not limited to: a base station (generation node B, gNB), a radio network controller (radio network controller, RNC), a node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (for example, home evolved NodeB, or home Node B, HNB), a baseband unit (baseband unit, BBU), an access point (access point, AP) in a wireless fidelity (wireless fidelity, Wi-Fi) system, a wireless relay node, a wireless backhaul node, a transmission point (transmission and reception point, TRP or transmission point, TP), etc., and may also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio unit (RU).
  • the CU implements some functions of the gNB
  • the DU implements some functions of the gNB, for example, the CU implements the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers
  • the DU implements the functions of the radio link control (RLC), media access control (MAC) and physical (PHY) layers.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the network device can be a CU node, a DU node, or a device including a CU node and a DU node.
  • the CU may be classified as a network device in the access network RAN, or the CU may be classified as a network device in the core network CN, and there is no limitation on this.
  • the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • the terminal device in the embodiments of the present application may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a smart wearable device (smart glasses, smart watch, smart headset, etc.), a wireless terminal in smart home, etc., and may also be a chip or chip module (or chip system) that can be set in the above devices.
  • the embodiments of the present application do not limit the application scenarios.
  • the network device can send a wake-up signal to the terminal device, and the terminal device can use a wake-up receiver to receive the wake-up signal.
  • the communication system shown in Figure 1 may be, but is not limited to, a fourth generation (4th Generation, 4G) system, a fifth generation (5th Generation, 5G) system, such as a new generation of wireless access technology (new radio access technology, NR).
  • 4G fourth generation
  • 5G fifth generation
  • NR new radio access technology
  • the method of the embodiment of the present application is also applicable to various future communication systems, such as a sixth generation (6th Generation, 6G) system or other communication networks.
  • the terminal device uses the same receiving module (or receiver, or receiving circuit) to receive any downlink signal from the network device.
  • the module that completes these functions (or performs related steps) is called the main circuit (or main receiver).
  • main circuit or main receiver
  • main circuit is only named for distinction, and its specific naming does not limit the scope of protection of this application.
  • the main circuit can also be described as the second circuit (or second module). The following unified description is the main circuit.
  • the terminal device receiving the signal using the main circuit can be referred to as transmitting on the main link, where the main link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity.
  • the main link is only a name for distinction, and its specific name does not limit the scope of protection of this application.
  • the main link can also be described as a second link.
  • the power consumption is high.
  • the terminal device when receiving downlink data, the terminal device must first use the receiving module of the main circuit to receive the downlink signal, and then the terminal device must perform blind detection on the physical downlink control channel (PDCCH) and decode the received physical downlink shared channel (PDSCH), etc., which will result in high power consumption.
  • the main circuit since the main circuit is relatively complex, its baseline power consumption (or static power consumption) during operation is relatively high.
  • the terminal device can use a separate low-power small circuit to receive a wake-up signal (wake up signal, WUS) or a low-power wake-up signal (low power wake up signal, LP-WUS).
  • the wake-up signal is used to indicate paging-related information, and the paging-related information may include, for example, whether a terminal device or a group of terminal devices is paged.
  • the wake-up signal is used to indicate scheduling-related information, and the scheduling-related information may include, for example, whether the physical downlink control channel (physical downlink control channel, PDCCH) needs to be monitored.
  • the low-power small circuit can be implemented using a separate small circuit or chip with a simple structure, and its power consumption is low.
  • the low-power small circuit can be called a wake-up receiver (WUR), or a wake-up circuit, or a low-power circuit or a low-power wake-up radio circuit (LP-WUR), etc., and the present application does not limit its naming.
  • the low-power small circuit is referred to as a wake-up circuit.
  • the wake-up circuit is only a name for distinction, and its specific naming does not limit the scope of protection of the present application.
  • the wake-up circuit can also be described as a first circuit (or a first module). For the convenience of explanation below, it is uniformly described as a wake-up circuit.
  • FIG2 shows a schematic diagram of a terminal device receiving a wake-up signal through a wake-up circuit.
  • the signal received by the terminal device using the wake-up circuit can be referred to as transmission on the wake-up link, where the wake-up link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity.
  • the wake-up link is only a name for distinction, and its specific naming does not limit the scope of protection of this application.
  • the wake-up link (or WUR link) can also be described as the first link.
  • the signal received by the terminal device on the wake-up link can be referred to as a wake-up signal, and it should also be understood that the wake-up signal is only an example naming, and this application does not limit its naming.
  • the wake-up signal can be used to carry the above-mentioned paging-related information.
  • the wake-up signal can be used to carry the above-mentioned scheduling-related information, for example, the wake-up signal is used to indicate whether the terminal device needs to turn on the main circuit to receive scheduling information (such as whether it needs to monitor PDCCH).
  • the LP-WUS signal can be OOK modulated, and the corresponding wake-up circuit can receive the wake-up signal by envelope detection.
  • OOK modulation each (encoded) bit corresponds to a symbol (symbol, which can also be called a chip).
  • a signal is sent within the symbol length (that is, the signal power within the symbol length is not 0).
  • it can be called an ON signal.
  • no signal is sent within the symbol length (that is, the signal power within the symbol length is 0).
  • it can be called an OFF signal.
  • the waveform shown in Figure 3 represents four bits of 1010.
  • the 5G NR system uses OFDM modulation.
  • the network equipment of the 5G NR system can send out orthogonal frequency division multiplexing (OFDM) modulated signals.
  • OFDM orthogonal frequency division multiplexing
  • the above OOK signal can be implemented through an OFDM modulated transmitter.
  • the length of an OOK symbol can be the same as the length of an OFDM symbol.
  • the transmitter sends a certain signal so that the signal is on in the symbol.
  • the contour within the length is as square wave as possible.
  • the OFDM transmitter can send multiple OOK symbols within the length of an OFDM symbol to shorten the length of the OOK symbol. More OOK symbols can be sent in the same time to increase the data rate.
  • LP-WUS can also use FSK modulation.
  • FSK modulation different information uses different frequency resources.
  • 2FSK can carry 1 bit of information.
  • the information bit is 0, the information can be sent on the frequency resource f0, and the information is not sent on the frequency resource f1; when the information bit is 1, the information can be sent on the frequency resource f1, and the information is not sent on the frequency resource f0.
  • the FSK signal waveform with information 0101 can be shown in Figure 4 below. In the first symbol and the third symbol, the frequency of the signal is lower, and in the second symbol and the fourth symbol, the frequency of the signal is higher.
  • the receiving end demodulates the signal, it can compare the power of f0 and f1 to determine whether the transmitted information is 0 or 1.
  • FSK can also support higher modulation orders to carry more information.
  • 4FSK can carry 2 bits of information.
  • the information bit is 00
  • the information can be sent on frequency resource f0, and no information is sent on frequency resources f1, f2, and f3
  • the information bit is 01
  • the information can be sent on frequency resource f1, and no information is sent on frequency resources f0, f2, and f3
  • the information bit is 10
  • the information can be sent on frequency resource f2, and no information is sent on frequency resources f0, f1, and f3
  • the information bit is 11, the information can be sent on frequency resource f3, and no information is sent on frequency resources f0, f1, and f2.
  • the receiving end can compare the power levels on multiple frequency resources to determine what information is being transmitted.
  • the DRX mechanism can make the terminal device sleep periodically in certain time periods, thereby saving the power consumption of the terminal device.
  • the DRX used by the terminal device in the radio resource control (RRC) connected state is connected discontinuous reception (C-DRX).
  • a DRX cycle includes an “On Duration” part and an “Opportunity for DRX” part.
  • the terminal device monitors and receives the physical downlink control channel (PDCCH); during the “Opportunity for DRX” time, the terminal device may have the opportunity not to monitor or receive the PDCCH to reduce power consumption.
  • PDCCH physical downlink control channel
  • the DRX mechanism includes a duration timer (onDurationTimer or drx-onDurationTimer). At the beginning of each DRX cycle (i.e., the beginning of the on Duration of each DRX cycle), the terminal device needs to start the drx-onDurationTimer. When the drx-onDurationTimer times out, it means that the "On Duration" time is over, and the terminal device enters the "Opportunity for DRX" time.
  • the DRX mechanism also includes a deactivation timer (InactivityTimer or drx-InactivityTimer). Every time the terminal device receives a DCI that schedules a new transmission data packet, it will start/restart the drx-InactivityTimer.
  • the time that drx-OnDurationTimer and drx-InactivityTimer run is called the activation time (Active Time).
  • the terminal device will monitor PDCCH in Active Time, receive channel state information reference signal (CSI-RS), provide channel state information (CSI) feedback, and send sounding reference signal (SRS).
  • the terminal device will not monitor PDCCH outside Active Time, will not provide periodic CSI feedback and semi-persistent CSI feedback, and will not send periodic SRS and semi-persistent SRS.
  • the C-DRX cycle length, drx-OnDurationTimer length, and drx-InactivityTimer length are all configured by the network device for the terminal device.
  • DCP power saving radio network temporary identifier
  • DCI format 2_6 is supported, also known as DCP (DCP is used as a synonym to simplify the description below).
  • DCP can be in front of the OnDuration of a C-DRX cycle to indicate whether the OnDurationTimer of the C-DRX cycle associated with it needs to be started. If the DCP indicates that the OnDurationTimer needs to be started (the indication bit associated with the terminal device in the DCP is 1), the terminal device needs to monitor the PDCCH in the OnDuration of the DRX cycle (it can also be said that the terminal device is in the awake state), which also means that there may be data scheduling for the terminal device in the OnDuration.
  • the solid line box in Figure 6 represents the OnDuration of the terminal device in the awake state. If the DCP indicates that the OnDurationTimer does not need to be started (the indication bit associated with the terminal device in the DCP is 0), the terminal device does not need to monitor the PDCCH in the DRX cycle (it can also be said that the terminal device is in a sleep state), which also means that there will be no data scheduling for the terminal device in the OnDuration. As shown in Figure 6, the dotted box in Figure 6 represents the OnDuration when the terminal device is in a sleep state.
  • the physical layer (PHY) of the terminal device decodes the DCP and informs the DCP of the information (0 or 1) indicated by the DCP.
  • the media access control (MAC) layer of the terminal device controls whether the OnDurationTimer is started.
  • the basic principle of PDCCH skipping is: the network device sends an indication message to the terminal device, indicating that the terminal device can skip PDCCH monitoring for a period of time.
  • the terminal device skipping PDCCH monitoring for a period of time can be equivalently described as the terminal device not monitoring PDCCH for a period of time.
  • the terminal device originally needs to monitor PDCCH in each time slot, but if the terminal device is instructed by the network device not to monitor PDCCH for a period of time, the terminal device can not monitor PDCCH during the indicated period of time.
  • the basic principle of SSSG switching is that the network device can send an indication message to the terminal device, instructing the terminal device to switch between two pre-configured search spaces.
  • the terminal device is configured with two search spaces, the first search space corresponds to a period of 1 time slot, and the second search space corresponds to a period of 4 time slots.
  • the network device sends an indication message to the terminal device, instructing the terminal device to switch from monitoring the first search space to monitoring the second search space
  • the terminal device can switch from monitoring the first search space to monitoring the second search space.
  • the indication information of PDCCH skipping and SSSG switching is carried in the same domain (i.e., the same field) of downlink control information (DCI), which can be called PDCCH monitoring adaptation domain or PDCCH monitoring adaptation indication information.
  • DCI downlink control information
  • the DCI format carrying this domain can be DCI format 0_1 or DCI format 0_2 for scheduling physical uplink shared channel (PUSCH) transmission, or DCI format 1_1 or DCI format 1_2 for scheduling physical downlink shared channel (PDSCH) transmission.
  • LP-WUS can be used to indicate the monitoring of PDCCH, and energy saving of the terminal device can be achieved by monitoring LP-WUS.
  • the terminal device monitors LP-WUS for example, it is not clear how to activate or deactivate the relevant process of LP-WUS monitoring (that is, how to start or stop monitoring LP-WUS), and for example, the specific behavior of the terminal device monitoring LP-WUS is not clear.
  • an embodiment of the present application provides a communication method for providing a solution for a terminal device to monitor LP-WUS.
  • the communication method provided in the embodiments of the present application is described in detail using network devices and terminal devices as examples. It should be understood that the operations performed by the network device can also be implemented by a processor in the network device, or a chip or chip system, or a functional module, etc., and the operations performed by the terminal device can also be implemented by a processor in the terminal device, or a chip or chip system, or a functional module, etc., and the present application does not limit this.
  • Step 901 The terminal device determines whether a condition for monitoring LP-WUS is met; accordingly, the network device determines whether the terminal device meets the condition for monitoring the LP-WUS, wherein the LP-WUS is used to wake up the terminal device.
  • monitoring LP-WUS may be understood as starting to monitor LP-WSU.
  • Waking up the terminal device here may mean that the terminal device starts monitoring PDCCH, where the PDCCH is used to schedule the transmission of PDSCH or PUSCH, or the PDCCH is used to activate semi-persistence scheduling (SPS) or configured grant (CG).
  • the transmission of PDSCH may be dynamic PDSCH transmission or semi-persistent PDSCH transmission.
  • the LP-WUS may wake up the terminal device in the following manner:
  • the LP-WUS may include an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device.
  • the identifier of the terminal device can be a connected radio network temporary identifier (C-RNTI), or a dedicated RNTI related to LP-WUS monitoring, or other forms of identifiers, which are not limited here.
  • C-RNTI connected radio network temporary identifier
  • LP-WUS monitoring or other forms of identifiers, which are not limited here.
  • the LP-WUS includes partial information of the identification of the terminal device, and the partial information of the identification of the terminal device and the first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identification of the terminal device.
  • the first time domain position is related to the identification of the terminal device, which can be understood as: the first time domain position is related to the complete identification of the terminal device; or, it can also be understood as: the first time domain position is related to partial information of the identification of the terminal device, which is not limited in this application.
  • the terminal device can take the modulus of N according to the terminal device's identification to determine which time domain position it needs to monitor.
  • the terminal device's identification C-RNTI includes 16 bits
  • the high-order 14 bits i.e., part of the identification information of the terminal device
  • the low-order 2 bits can be distinguished by different time domain positions.
  • the low-order 2 bits of the terminal device can be identified by the first time domain position, so that the terminal device can be awakened based on the high-order 14 bits and the first time domain position included in the LP-WUS.
  • the time domain location when the time domain location is divided into more parts, it is possible that the identity of the entire terminal device is distinguished by the time domain location.
  • the LP-WUS may not include part of the information of the identity of the terminal device.
  • the LP-WUS includes partial information of the identifier of the terminal device group, and the partial information of the identifier of the terminal device group and the second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group.
  • the terminal device group includes the terminal device.
  • the second time domain position is related to the identifier of the terminal device group, which can be understood as: the second time domain position is related to the complete identifier of the terminal device group; or, it can also be understood as: the second time domain position is related to partial information of the identifier of the terminal device group, which is not limited in this application.
  • each time domain position appears periodically, and a certain terminal device group only needs to monitor one of the time domain positions.
  • the terminal device group can take the modulus of N according to the identifier of the terminal device group to determine which time domain position it needs to monitor.
  • the identifier of the terminal device group includes 16 bits, then only the high-order 14 bits (i.e., part of the information of the identifier of the terminal device group) can be included in the LP-WUS, and the low-order 2 bits can be distinguished by different time domain positions.
  • the low-order 2 bits of the terminal device group can be identified by the second time domain position, so that the terminal devices in the terminal device group can be awakened based on the high-order 14 bits and the second time domain position included in the LP-WUS.
  • the time domain location when the time domain location is divided into more parts, it is possible that the identity of the entire terminal device group is distinguished by the time domain location.
  • the LP-WUS may not include part of the information of the identity of the terminal device group.
  • the LP-WUS includes an identifier of a terminal device group, the identifier of the terminal device group is used to wake up the terminal device group, and the terminal device group includes the terminal device.
  • the LP-WUS includes multiple bits, the multiple bits correspond to multiple terminal devices, the first bit of the multiple bits is used to wake up the terminal device, and the multiple terminal devices include the terminal device.
  • which bit of the multiple bits the terminal device corresponds to can be pre-configured.
  • the LP-WUS may indicate the identifiers of multiple terminal devices, specifically, the identifiers of multiple terminal devices may be indicated by multiple bits.
  • the identifiers of multiple terminal devices may be indicated by a bitmap.
  • LP-WUS may include a 10-bit bitmap, where a bit value of 1 indicates being awakened, and a bit value of 0 indicates not being awakened. Assuming that the terminal device corresponds to the third bit of the 10 bits, if the third bit has a value of 1, the terminal device is awakened, that is, the terminal device stops monitoring LP-WUS and starts monitoring PDCCH.
  • the multiple terminal devices may belong to a terminal device group, and correspondingly, corresponding terminal devices in a terminal device group are awakened through multiple bits.
  • the terminal device must first determine the LP-WUS corresponding to the terminal device group to which it belongs.
  • the terminal device can combine the above-mentioned method a3 or a4 to determine the LP-WUS corresponding to the terminal device group to which the terminal device belongs through partial information of the terminal device group identifier included in the LP-WUS or the identifier of the terminal device group.
  • the above-mentioned method a3 or a4, combined with method a5 can wake up some or all of the terminal devices in a terminal device group.
  • the LP-WUS is received by a first circuit of the terminal device, and the PDCCH is received by a second circuit of the terminal device.
  • the first circuit and the second circuit are different.
  • Step 902 The terminal device determines that a condition for monitoring the LP-WUS is met, and monitors the LP-WUS.
  • the terminal device can monitor LP-WUS after determining that the condition for monitoring LP-WUS is met once.
  • the terminal device may determine that the condition for monitoring LP-WUS is met multiple times in a certain period of time. Measure LP-WUS.
  • Step 903 When the network device determines that the terminal device meets the condition for monitoring the LP-WUS and has a LP-WUS sending requirement, the network device sends the LP-WUS to the terminal device.
  • the LP-WUS is sent to the terminal device, which can be understood as the network device determining that the terminal device monitors the LP-WUS, or can be understood as the network device can send the LP-WUS.
  • the terminal device can be understood as the network device determining that the terminal device monitors the LP-WUS, or can be understood as the network device can send the LP-WUS.
  • Other similar descriptions can be similarly understood and will not be explained one by one below.
  • the terminal device receives the configuration information of the LP-WUS from the network device.
  • the configuration information of the LP-WUS may include one or more of the following: the monitoring time-frequency domain position of the LP-WUS, the format of the LP-WUS, the modulation mode of the LP-WUS, or the information content carried by the LP-WUS, etc.
  • the information content carried by the LP-WUS may be an indication of monitoring PDCCH, etc.
  • the format of the LP-WUS, the modulation mode of the LP-WUS, or the information content carried by the LP-WUS may also be predefined by the protocol, and this application does not limit this.
  • the LP-WUS may adopt OOK modulation, FSK modulation, or a modulation method combining OOK and FSK.
  • the configuration information of the LP-WUS may be sent by the network device to the terminal device via an RRC message.
  • the terminal device may receive the RRC message via the main circuit.
  • the terminal device After the terminal device receives the configuration information of the LP-WUS, the terminal device does not immediately start to monitor the LP-WUS, but the terminal device determines that the conditions for monitoring the LP-WUS are met, and then the terminal device starts to monitor the LP-WUS.
  • the terminal device may determine that the condition for monitoring the LP-WUS is met by the following method:
  • Method b1 The terminal device receives first information from a network device, where the first information is used to instruct the terminal device to monitor the LP-WUS. That is, the first information activates LP-WUS monitoring.
  • the network device may send the first information to the terminal device via DCI or media access control element (MAC CE).
  • DCI media access control element
  • MAC CE media access control element
  • Method b2 The terminal device determines that no scheduling information is received from the network device within a first time period.
  • the first duration may be implemented based on a timer, that is, the duration of the timer is set to the first duration, and when the timer times out, the terminal device starts to monitor the LP-WUS.
  • the timer can reuse the current existing timer, or it can be a newly defined timer dedicated to triggering the start of monitoring LP-WUS, which is not limited in this application.
  • the timer can reuse drx-InactivityTimer, that is, the terminal device starts monitoring LP-WUS after drx-InactivityTimer times out.
  • the terminal device may further determine whether the condition for monitoring the LP-WUS is satisfied based on the following method b3:
  • the terminal device determines that a first channel quality parameter is greater than or equal to a first threshold, and the first channel quality parameter is at least one of the following: reference signal received power (reference signal received power, RSRP), reference signal received quality (reference signal received quality, RSRQ), LP-WUS detection probability or low-power synchronization signal (low-power synchronization signal, LP-SS) detection probability.
  • reference signal received power reference signal received power
  • RSRQ reference signal received quality
  • LP-WUS detection probability low-power synchronization signal
  • the first channel quality parameter may correspond to a main link, ie, a link between a main circuit of the network device and the terminal device.
  • the terminal device may send first channel feedback information to the network device, where the first channel feedback information is used to indicate that the first channel quality parameter is greater than or equal to the first threshold, so that the network device determines that the terminal device meets the condition for monitoring the LP-WUS.
  • the network device may send the LP-WUS to the terminal device only after determining that the terminal device meets the condition for monitoring the LP-WUS, so as to maintain alignment with the terminal device monitoring the LP-WUS.
  • the network device may determine that the terminal device meets the condition for monitoring the LP-WUS by the following method:
  • Method c1 The network device sends the first information to the terminal device.
  • Method c2 The network device determines that no scheduling information is sent to the terminal device within the first time period.
  • the network device may further determine the condition for monitoring the LP-WUS based on the following method c3:
  • Method c3 The network device receives the first channel feedback information from the terminal device.
  • the above method b1 corresponds to the above method c1
  • the above method b2 corresponds to the above method c2
  • the above method b3 corresponds to the above method c4.
  • Method c3 corresponds.
  • the network device determines that the condition for monitoring the LP-WUS is met through the above method b1
  • the network device correspondingly determines that the terminal device meets the condition for monitoring the LP-WUS through the above method c1.
  • the network device determines that the condition for monitoring the LP-WUS is met through the above method b2 and method b3
  • the network device correspondingly determines that the terminal device meets the condition for monitoring the LP-WUS through the above method c2 and method c3.
  • the terminal device starts monitoring the LP-WUS at the first moment. Accordingly, the network device starts at the first moment and sends the LP-WUS to the terminal device when there is a demand to send the LP-WUS.
  • the first moment is related to a second moment
  • the second moment is the moment when the terminal device receives the first information, which can be understood as the second moment being the moment when the network device sends the first information; or, the second moment can be the end moment of the first duration.
  • the first information may be included in a signal (such as the DCI or MAC CE mentioned above). Based on this, the moment when the terminal device receives the first information or the moment when the network device sends the first information can be understood as the end moment of the signal transmission containing the first information, and can also be described as the moment when the signal transmission containing the first information is completed.
  • a signal such as the DCI or MAC CE mentioned above.
  • the first moment may be the second moment plus a first delay
  • the first delay may be understood as an application delay for monitoring LP-WUS.
  • the first delay may include the time to start the wake-up circuit (for example, it may be between 1 millisecond (ms) and 10 ms).
  • the first delay may also include the time it takes for the main circuit of the terminal device to decode the first information, which may also be understood as the time it takes for the main circuit of the terminal device to decode the signal containing the first information, which is not limited in this application.
  • the terminal device may continue to monitor PDCCH, or the terminal device may not monitor anything (for example, the terminal device monitors neither PDCCH nor LP-WUS, and the terminal device may not receive other signals such as CSI-RS).
  • the first time delay may be called an interruption time.
  • FIG11 is a schematic diagram showing an example of the first time delay.
  • the value of the first delay may be predefined by the protocol, reported by the terminal device to the network device, negotiated between the terminal device and the network device, or configured by the network device to the terminal device, which is not limited in this application.
  • the first moment may be a start moment of a time unit next to the second moment, etc.
  • the time unit may be a time slot or a symbol, etc.
  • the terminal device when the terminal device monitors the LP-WUS, the terminal device determines whether the condition for monitoring the PDCCH is met, determines that the condition for monitoring the PDCCH is met, and monitors the PDCCH. Accordingly, after determining that the terminal device meets the condition for monitoring the LP-WUS, the network device determines whether the terminal device meets the condition for monitoring the PDCCH, determines that the terminal device meets the condition for monitoring the PDCCH, and when there is a need to send the PDCCH, sends the PDCCH to the terminal device.
  • the network device when the network device has a PDCCH transmission requirement, the network device transmits the PDCCH to the terminal device, which can be understood as the network device determining that the terminal device monitors the PDCCH, or can be understood as the network device can transmit the PDCCH.
  • the terminal device can be understood as the network device determining that the terminal device monitors the PDCCH, or can be understood as the network device can transmit the PDCCH.
  • Other similar descriptions can be similarly understood and will not be described one by one below.
  • the terminal device may determine that the condition for monitoring the PDCCH is met by determining that the first condition and/or the second condition are met.
  • the first condition may include the following conditions:
  • Condition d1 The terminal device detects the LP-WUS from the network device.
  • the terminal device can determine that it can start monitoring the PDCCH after monitoring the LP-WUS.
  • the LP-WUS may instruct the terminal device to stop monitoring the LP-WUS, that is, instruct the terminal device to monitor the PDCCH.
  • the method may be similar to the method of waking up the terminal device by the LP-WUS.
  • Condition d2 the terminal device sends uplink service information.
  • the uplink service information may be a scheduling request (scheduling request) or a configured grant PUSCH (configured grant PUSCH), etc.
  • the terminal device requests the network device to send an uplink scheduling through SR. After the terminal device sends the SR, it monitors the PDCCH to confirm To determine whether there is uplink scheduling from the network device, the terminal device can start monitoring PDCCH after sending SR.
  • the terminal device when the network device configures CG-PUSCH resources for the terminal device, the terminal device can directly use the pre-configured CG-PUSCH resources to send uplink data when there is uplink service, without waiting for the scheduling of the network device.
  • the terminal device After the terminal device sends the CG-PUSCH, if the network device fails to correctly receive the CG-PUSCH, the network device may send DCI to schedule the retransmission of the CG-PUSCH, so the terminal device can start monitoring the PDCCH after sending the CG-PUSCH.
  • Condition d3 the terminal device does not detect the LP-WUS within the second time period.
  • the second duration may be included in the configuration information of LP-WUS, or may be included in the first information, which is not limited in this application. Since LP-WUS adopts a simpler modulation method, the power consumption of the wake-up circuit of the terminal device receiving LP-WUS is relatively low, so the coverage performance of LP-WUS may be poor. When the terminal device fails to monitor the LP-WUS within the second duration, the link quality of the first link between the first circuit of the terminal device and the network device may be poor. In order to avoid the terminal device from ineffectively monitoring LP-WUS for a long time when the link quality of the first link is poor, the second duration can be used to avoid this problem.
  • the second condition may include:
  • Condition d4 The terminal device determines that a second channel quality parameter is less than or equal to a second threshold, and the second channel quality parameter is at least one of the following: RSRP, RSRQ, LP-WUS detection probability or LP-SS detection probability.
  • the second channel quality parameter may correspond to a main link (ie, a link between a main circuit of the network device and the terminal device), or may correspond to a WUR link (ie, a link between a wake-up circuit of the network device and the terminal device).
  • the terminal device can determine the second channel quality parameter through the following possible methods: one possible method is that the terminal device measures the second channel quality parameter through a wake-up circuit. In this case, the network device needs to send a reference signal (which can be a newly defined reference signal, such as LP-RS) that can be received by the wake-up circuit, so as to complete the measurement of the second channel quality parameter. Another possible method is that the terminal device measures the second channel quality parameter through a main circuit.
  • a reference signal which can be a newly defined reference signal, such as LP-RS
  • the terminal device needs to open the main circuit from time to time (for example, periodically) to receive a reference signal (such as a synchronization signal and a physical broadcast channel block (SSB) or a channel state information reference signal (CSI-RS)), so as to complete the measurement of the second channel quality parameter.
  • a reference signal such as a synchronization signal and a physical broadcast channel block (SSB) or a channel state information reference signal (CSI-RS)
  • the terminal device may send second channel feedback information to the network device, where the second channel feedback information is used to indicate that the second channel quality parameter is less than or equal to the second threshold, so that the network device determines that the terminal device meets the condition for monitoring the PDCCH.
  • the network device may determine that the terminal device meets the condition for monitoring the PDCCH by determining that the first condition and/or the second condition are met.
  • the first condition may include the following conditions:
  • Condition e1 When the network device has a demand to send the LP-WUS, the network device sends the LP-WUS to the terminal device.
  • Condition e2 The network device receives uplink service information.
  • Condition e3 the network device does not send the LP-WUS within the second time period.
  • the second condition may include:
  • Condition e4 the network device receives the second channel feedback information from the terminal device.
  • the above method d1 corresponds to the above method e1
  • the above method d2 corresponds to the above method e2
  • the above method d3 corresponds to the above method e3
  • the above method d4 corresponds to the above method e4.
  • the network device determines that the terminal device meets the conditions for monitoring the PDCCH through the above method e1.
  • the network device determines that the conditions for monitoring the PDCCH are met through the above method d2 and method d3
  • the network device correspondingly determines that the terminal device meets the conditions for monitoring the PDCCH through the above method e2 and method e3.
  • the time when the terminal device stops monitoring LP-WUS may be earlier than the time when it starts monitoring PDCCH, or may be later than the time when it starts monitoring PDCCH, or it may start monitoring PDCCH and stop monitoring LP-WUS at the same time, which is not limited in this application.
  • the terminal device will not stop monitoring the LP-WUS when monitoring the PDCCH.
  • the terminal device may start monitoring the PDCCH at a third time. Accordingly, the network device may start sending the PDCCH to the terminal device at the third time when there is a need to send the PDCCH.
  • the third moment is related to the fourth moment, and the fourth moment may be the moment when the terminal device monitors the LP-WUS, or the moment when the uplink service information transmission is completed, or the end moment of the second duration.
  • the moment when the LP-WUS is monitored in the present application can be understood as the moment when the LP-WUS transmission is completed, and can also be called the end moment of the LP-WUS.
  • the third moment and the fourth moment may be the same moment, that is, it can be understood that the third moment and the fourth moment are the same concept; or, the third moment and the fourth moment are two different moment concepts, but the values of the third moment and the fourth moment may be the same.
  • the third moment may be the fourth moment plus the second delay
  • the second delay may be understood as the effectiveness delay of monitoring the PDCCH.
  • the main circuit in the connected state, when the terminal device uses the wake-up circuit to monitor the LP-WUS, in order to reduce power consumption, the main circuit should be in a certain sleep state. If it is assumed that the main circuit is in a deep sleep state, the second delay can be 20ms or the second delay can be between 10ms and 20ms, or the second delay can also be other values, which are not limited in this application.
  • the value of the second delay may be predefined by the protocol, reported by the terminal device to the network device, negotiated between the terminal device and the network device, or configured by the network device to the terminal device, which is not limited in this application.
  • the terminal device may continue to monitor LP-WUS, or the terminal device may not monitor anything (for example, the terminal device monitors neither PDCCH nor LP-WUS, and the terminal device may not receive other signals such as LP-SS).
  • the first time delay may be referred to as an interruption time.
  • the third moment may be a start moment of a time unit next to the fourth moment, etc.
  • the time unit may be a time slot or a symbol, etc.
  • the terminal device when the fourth moment is the moment when the uplink service information transmission is completed, the terminal device sends SR or CG-PUSCH, indicating that the terminal device has started to use the main circuit, and there may be no need for another process of starting the main circuit. Therefore, it can be defined that the terminal device starts monitoring the PDCCH from the next time slot or symbol after sending SR or CG-PUSCH.
  • the terminal device may send feedback information to the network device after the third moment, and the feedback information is used to instruct the terminal device not to monitor the LP-WUS or the terminal device to start monitoring the PDCCH.
  • the terminal device starts monitoring the PDCCH after sending the feedback information.
  • the network device sends the PDCCH to the terminal device when there is a need to send PDCCH.
  • Figure 12 shows a schematic diagram of a terminal device monitoring PDCCH. It should be noted that Figure 12 only exemplarily shows that the third moment is the fourth moment plus the second delay. This is only an example, and other situations are not shown one by one. It can be understood that when the feedback information in Figure 12 does not exist, it is a schematic diagram of the terminal device starting to monitor the PDCCH at the third moment, which is no longer shown separately here.
  • the specific time at which the terminal device sends the feedback information to the network device may be predefined.
  • the resource at which the terminal device sends the feedback information may be configured by the network device, or may be indicated by LP-WUS.
  • the feedback information may be sent via a periodic PUCCH resource.
  • the time domain position of the PUCCH resource used for the feedback information may be determined based on the second delay. For example, it may be sent on the nearest periodic PUCCH resource after the second delay; or when the LP-WUS indicates that the terminal device starts monitoring the PDCCH, it also indicates the PUCCH resource to be used.
  • the network device knows when the PDCCH can be sent to the terminal device.
  • the terminal device when the terminal device is configured with C-DRX, the terminal device does not monitor PDCCH (and does not perform periodic/semi-persistent CSI measurement/feedback, and does not send periodic/semi-persistent SRS) when monitoring LP-WUS during the activation time (Active Time).
  • the network device determines that the terminal device is monitoring the LP-WUS, within the activation time, and has a requirement to send the LP-WUS, when sending the LP-WUS to the terminal device, the PDCCH is not sent to the terminal device.
  • each timer of C-DRX can operate normally, and the definition of the activation time is not changed, but the priority of the terminal device monitoring LP-WUS is higher than other legacy behaviors.
  • the activation time may include at least one of the following: the time of at least one of the running timers including the DRX ON period timer (i.e., drx-onDurationTimer) or the DRX inactivity timer (also called the DRX deactivation timer, i.e., drx-InactivityTimer) or the DRX downlink retransmission timer or the DRX uplink retransmission timer or the random access contention resolution timer; or, the time when the scheduling request has been sent on the PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives the random access response of the random access preamble, the time when a new transmission indicated by the PDCCH addressed by the cell radio network temporary identifier C-RNTI of the media access control (MAC) entity has not been received, wherein the random access preamble is not selected by the MAC entity in the contention-based random access preamble.
  • the DRX ON period timer i.
  • the terminal device when the terminal device is configured with connected discontinuous reception C-DRX, the terminal device can monitor the LP-WUS within the activation time or outside the activation time. Accordingly, when the network device has the LP-WUS sending requirement within the activation time or outside the activation time, it sends the LP-WUS to the terminal device. In this way, energy saving of the terminal device can be achieved.
  • the terminal device If the terminal device detects the LP-WUS within the activation time, the terminal device monitors the PDCCH after the third time period from the moment of detecting the LP-WUS. Correspondingly, if the network device sends the LP-WUS within the activation time, the network device determines to send the PDCCH to the terminal device when there is a PDCCH sending demand after the third time period from the moment of sending the LP-WUS.
  • the terminal device monitors the PDCCH after the fourth time period from the moment of detecting the LP-WUS.
  • the network device sends the LP-WUS outside the activation time, the network device determines to send the PDCCH to the terminal device when there is a need to send the PDCCH after the fourth time period from the moment of sending the LP-WUS.
  • the third duration and the fourth duration are the same or different.
  • the main circuit of the terminal device may be maintained in a deep sleep state to save energy when the terminal device monitors LP-WUS.
  • the network device does not know which sleep state the terminal device is in, and can only assume that the terminal device is in a deep sleep state, which may cause the maximum latency.
  • the third duration is equal to the fourth duration, which can be 20ms or a value between 10ms and 20ms, or other values, which are not limited in this application.
  • the terminal device in order to reduce latency, can be in different sleep states inside and outside the activation time, for example, the terminal device is in a micro-sleep state during the activation time, and the terminal device is in a deep sleep state outside the activation time, so as to reduce power consumption in exchange for a shorter average latency.
  • the fourth duration corresponding to the activation time can be predefined to be greater than the third duration corresponding to the activation time, which can also be understood as the delay of monitoring PDCCH outside the activation time is greater than the delay of monitoring PDCCH within the activation time.
  • the terminal device monitors WUS within the activation time or outside the activation time, when monitoring PDCCH, the terminal device can stop monitoring LP-WUS and monitor PDCCH, or the terminal device can also monitor LP-WUS and PDCCH at the same time, which is not limited in this application.
  • the terminal device should start monitoring PDCCH as soon as possible after receiving LP-WUS.
  • the terminal device can only monitor PDCCH during the activation time. If the terminal device receives LP-WUS outside the activation time, even if the terminal device can start using the main circuit to monitor PDCCH, according to the definition of the existing standard, the network device will not send PDCCH to the terminal device immediately, but will wait until the activation time (such as the next OnDuration) to send PDCCH.
  • the terminal device may stop monitoring the LP-WUS and start a first timer, and the activation time includes the time when the first timer runs. Accordingly, after the network device sends the LP-WUS to the terminal device, it no longer sends other LP-WUS to the terminal device and starts the first timer.
  • the terminal device starts to monitor PDCCH during the time when the first timer runs within the activation time.
  • the terminal device monitors PDCCH during the activation time. Therefore, when the time when the first timer runs is also defined as the activation time, the terminal device will monitor PDCCH during the time when the first timer runs. Accordingly, when the network device determines that there is a need to send PDCCH during the time when the first timer runs within the activation time, it sends PDCCH to the terminal device.
  • the first timer may be a drx-InactivityTimer.
  • the first timer may be a newly added timer (new timer), which is not limited in this application.
  • the terminal device may stop monitoring the LP-WUS and start monitoring the PDCCH at the activation time closest to the moment when the LP-WUS is detected (e.g., the next OnDuration). Accordingly, after the network device sends the LP-WUS to the terminal device, it does not send the LP-WUS to the terminal device and starts at the activation time closest to the moment when the network device sends the LP-WUS, and when there is a need to send PDCCH, it sends PDCCH to the terminal device.
  • the terminal device when the terminal device is configured with DCP, the terminal device does not monitor the DCP when monitoring the LP-WUS. Accordingly, when the network device determines that there is a demand to send the LP-WUS, it does not send the DCP to the terminal device when sending the LP-WUS to the terminal device.
  • the terminal device has a higher priority in monitoring LP-WUS than DCP. This is because both LP-WUS and DCP have the same functions. It is used to indicate whether to monitor PDCCH. The functions are relatively overlapping, so the terminal device only needs to monitor one of them. From the perspective of reducing the power consumption of the terminal device, monitoring LP-WUS consumes less power than monitoring DCP.
  • the terminal device determines not to start the DRX ON period timer. It can also be understood that when the terminal device does not monitor the DCP due to monitoring the LP-WUS, the terminal device does not wake up.
  • the network device determines that the DRX ON period timer is not started.
  • the terminal device may determine not to start the DRX ON period timer by the following method:
  • Method f1 the physical layer of the terminal device sends a first indication message to the media access control layer of the terminal device, wherein the first indication message is used to indicate that a decoding result of the DCP is 0; the media access control layer of the terminal device determines not to start the DRX ON period timer according to the first indication message.
  • the physical layer of the terminal device reports to the media access control layer that the decoding result corresponding to the DCP is 0, so that the media access control layer controls the DRX ON period timer not to start.
  • the terminal device can be made to perceive only the physical layer, thus simplifying the internal protocol stack structure of the terminal device.
  • Method f2 The media access control layer of the terminal device determines not to start the DRX ON period timer based on the terminal device monitoring the LP-WUS.
  • the media access control layer of the terminal device perceives the monitoring of LP-WUS (i.e., the media access control layer knows whether the terminal device is monitoring LP-WUS)
  • the physical layer reports to the media access control layer that the decoding result corresponding to the DCP is 0; or, the physical layer does not report to the media access control layer the decoding result corresponding to the DCP, and the media access control layer determines by itself that since it is monitoring LP-WUS, it does not start the DRX ON period timer.
  • the media access control layer can obtain more information and know the LP-WUS related information, which helps to achieve global control of the media access control layer over PDCCH monitoring.
  • the terminal device when monitoring the LP-WUS, does not monitor PDCCH monitoring adaptation indication information (PDCCH monitoring adaptation field), the PDCCH monitoring adaptation indication information being used to indicate skipping of at least one of PDCCH or search space group switching. Accordingly, when the network device has the LP-WUS sending requirement, when sending the LP-WUS to the terminal device, the PDCCH monitoring adaptation indication information is not sent to the terminal device.
  • PDCCH monitoring adaptation indication information (PDCCH monitoring adaptation field)
  • the PDCCH monitoring adaptation indication information being used to indicate skipping of at least one of PDCCH or search space group switching.
  • the priority of the terminal device monitoring LP-WUS is higher than the priority of monitoring PDCCH monitoring adaptive indication information.
  • the terminal device after the terminal device detects the LP-WUS, it monitors the PDCCH within a fifth time period; if the PDCCH of the network device is not received within the fifth time period, the terminal device starts to monitor the LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the network device sends PDCCH to the terminal device when there is a need to send PDCCH within the fifth time period; when the network device determines that if PDCCH is not sent to the terminal device within the fifth time period, the network device can send the LP-WUS to the terminal device when there is a need to send LP-WUS.
  • the terminal device when the terminal device is monitoring LP-WUS, if it receives an LP-WUS associated with itself and the LP-WUS indicates the fifth time duration, the terminal device stops monitoring the LP-WUS and starts monitoring the PDCCH. If the terminal device does not receive a schedule within the fifth time duration, it stops monitoring the PDCCH and starts monitoring the LP-WUS.
  • the fifth duration may be implemented by a timer.
  • the running time value of the timer may be preconfigured, predefined, or indicated by LP-WUS, which is not limited in this application.
  • the above method can be understood as a certain degree of prediction when the network device sends LP-WUS.
  • the network device instructs the terminal device to turn on the main circuit monitoring PDCCH not necessarily after the service arrives, but in advance, which can reduce latency.
  • it can also be understood as some constraints on the scheduling of network devices.
  • the network device After the network device sends LP-WUS to the terminal device to trigger the terminal device to turn on the main circuit monitoring PDCCH, the network device must start scheduling within a certain time (i.e., within the fifth time period) to avoid the terminal device turning on the main circuit monitoring PDCCH for too long, which is beneficial to energy saving and latency reduction of the terminal device.
  • the terminal device when the terminal device monitors the LP-WUS, the terminal device may monitor the LP-WUS continuously or discontinuously. For example, the terminal device may monitor the LP-WUS at a partial time domain position.
  • a solution for a terminal device to monitor LP-WUS can be provided.
  • the embodiment of the present application further provides a communication method, which can determine the specific behavior of the terminal device monitoring LP-WUS when the terminal device is configured with DRX.
  • the process of the method may include:
  • Step 1301 The terminal device is configured with C-DRX by the network device. Accordingly, the network device configures C-DRX for the terminal device.
  • Step 1302 The terminal device monitors the LP-WUS within the activation time, and the LP-WUS is used to wake up the terminal device.
  • Step 1303 The terminal device deactivates the monitoring PDCCH within the activation time.
  • the terminal device does not monitor the PDCCH.
  • Step 1304 When the network device has a LP-WUS transmission requirement within the activation time, the network device transmits the LP-WUS to the terminal device.
  • the terminal device if the terminal device detects the LP-WUS within the activation time, the terminal device monitors the PDCCH after a third time period from the moment the LP-WUS is detected.
  • the network device if the network device sends the LP-WUS within the activation time, the network device determines that the terminal device monitors the PDCCH after a third time period from the moment the LP-WUS is sent.
  • the terminal device may monitor the LP-WUS outside the activation time; if the terminal device monitors the LP-WUS outside the activation time, the terminal device monitors the PDCCH after the fourth time period from the moment the LP-WUS is monitored.
  • the network device sends the LP-WUS to the terminal device when there is a need to send the LP-WUS outside the activation time; if the network device sends the LP-WUS outside the activation time, the network device determines that the terminal device monitors the PDCCH after the fourth time period from the moment the LP-WUS is sent.
  • the third duration and the fourth duration are the same or different.
  • the method of starting to monitor PDCCH can refer to the relevant description involved in the embodiment shown in FIG. 9 above, which will not be repeated here.
  • the terminal device may be configured with a DCP.
  • the specific behavior of the terminal device or the network device may refer to the relevant description involved in the embodiment shown in FIG. 9 , which will not be repeated here.
  • the terminal device may be configured with PDCCH monitoring adaptive indication information.
  • the specific behavior of the terminal device or the network device may refer to the relevant description involved in the embodiment shown in FIG. 9 and will not be repeated here.
  • the terminal device after the terminal device detects the LP-WUS, it can monitor the PDCCH within the fifth time period.
  • the network device sends the LP-WUS to the terminal device the network device sends the PDCCH to the terminal device when there is a PDCCH sending demand within the fifth time period.
  • the specific behavior of the terminal device monitoring the LP-WUS can be determined.
  • the embodiments of the present application further provide a communication device, as shown in FIG. 14 , the communication device 1400 may include a transceiver unit 1401 and a processing unit 1402.
  • the transceiver unit 1401 is used for the communication device 1400 to receive information (signal, message or data) or send information (signal, message or data), and the processing unit 1402 is used to control and manage the actions of the communication device 1400.
  • the processing unit 1402 may also control the steps performed by the transceiver unit 1401.
  • the communication device 1400 may specifically be the terminal device in the above-mentioned embodiments, the processor in the terminal device, or a chip, or a chip system, or a functional module, etc.; or, the communication device 1400 may specifically be the network device in the above-mentioned embodiments, the processor of the network device, or a chip, or a chip system, or a functional module, etc.
  • the communication device 1400 when used to implement the functions of the terminal device in the embodiment shown in FIG. 9 above, it may specifically include: the processing unit 1402 may be used to determine whether the condition for monitoring the low power wake-up signal LP-WUS is met; wherein the LP-WUS is used to wake up the terminal device; and, determining that the condition for monitoring the LP-WUS is met, monitoring the LP-WUS.
  • the transceiver unit 1401 is used for the terminal device to send and receive signals such as the LP-WUS.
  • the processing unit 1402 when the processing unit 1402 determines that the conditions for monitoring the LP-WUS are met, it can be used to: control the transceiver unit 1401 to receive first information from the network device, wherein the first information is used to instruct the terminal device to monitor the LP-WUS; or determine that no scheduling information is received from the network device within a first time period.
  • the processing unit 1402 may also be used to: determine the first channel The quality parameter is greater than or equal to a first threshold, and the first channel quality parameter is at least one of the following: reference signal received power RSRP, reference signal received quality RSRQ, LP-WUS detection probability, or low power synchronization signal LP-SS detection probability.
  • the processing unit 1402 when monitoring the LP-WUS, may be configured to: start monitoring the LP-WUS at a first moment.
  • the first moment is related to a second moment
  • the second moment is the moment when the transceiver unit 1401 receives the first information, or is the end moment of the first duration.
  • the processing unit 1402 when monitoring the LP-WUS, is further configured to: determine whether a condition for monitoring a physical downlink control channel PDCCH is met; and determine that a condition for monitoring the PDCCH is met, and monitor the PDCCH.
  • the processing unit 1402 can be used to: meet the first condition and/or the second condition; wherein the first condition includes: controlling the transceiver unit 1401 to monitor the LP-WUS from the network device; or, controlling the transceiver unit 1401 to send uplink service information; or, failing to monitor the LP-WUS within a second time period; the second condition includes: determining that a second channel quality parameter is less than or equal to a second threshold, and the second channel quality parameter is at least one of the following: reference signal received power RSRP, reference signal received quality RSRQ, detection probability of LP-WUS, or detection probability of low power synchronization signal LP-SS.
  • the first condition includes: controlling the transceiver unit 1401 to monitor the LP-WUS from the network device; or, controlling the transceiver unit 1401 to send uplink service information; or, failing to monitor the LP-WUS within a second time period
  • the second condition includes: determining that a second channel quality parameter is less than or equal to a second
  • the processing unit 1402 when monitoring the PDCCH, may be configured to: start monitoring the PDCCH at a third time.
  • the transceiver unit 1401 can also be used to: before the processing unit 1402 monitors the PDCCH, send feedback information to the network device after a third moment, and the feedback information is used to instruct the terminal device not to monitor the LP-WUS or the terminal device starts to monitor the PDCCH.
  • the third moment is related to a fourth moment
  • the fourth moment is the moment when the terminal device monitors the LP-WUS, or the moment when the uplink service information transmission is completed, or the end moment of the second time period.
  • the terminal device is configured with connected discontinuous reception C-DRX; the processing unit 1402 is further used for: when monitoring the LP-WUS within the activation time, not monitoring the PDCCH.
  • the terminal device is configured with connected discontinuous reception C-DRX; the processing unit 1402 monitors the LP-WUS within the activation time or outside the activation time; if the LP-WUS is monitored within the activation time, the PDCCH is monitored after a third time period from the moment the LP-WUS is monitored; or if the LP-WUS is monitored outside the activation time, the PDCCH is monitored after a fourth time period from the moment the LP-WUS is monitored; wherein the third time period and the fourth time period are the same or different.
  • the activation time includes at least one of the following: the time of at least one of the running timers including the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer; or, the time when a scheduling request has been sent on a physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives a random access response to a random access preamble, the time when a new transmission indicated by a PDCCH addressed by a cell radio network temporary identifier C-RNTI of a media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in a contention-based random access preamble.
  • the processing unit 1402 may also be configured to: after detecting the LP-WUS, stop monitoring the LP-WUS and start a first timer, wherein the activation time includes the time during which the first timer runs.
  • the processing unit 1402 may also be configured to: start monitoring the PDCCH within the time when the first timer runs within the activation time.
  • the processing unit 1402 may also be configured to: after detecting the LP-WUS, stop monitoring the LP-WUS and start monitoring the PDCCH at the activation time closest to the moment when the LP-WUS is detected.
  • the terminal device is configured to monitor downlink control information DCP scrambled by a power-saving radio network temporary identifier; the processing unit 1402 may also be used to: when monitoring the LP-WUS, not monitor the DCP.
  • processing unit 1402 can also be used to: if the DCP is not detected during the monitoring period of the DCP when monitoring the LP-WUS, determine not to start the DRX ON period timer.
  • the processing unit 1402 can be used to: control the physical layer to send a first indication message to the media access control layer, wherein the first indication message is used to indicate that the decoding result of the DCP is 0; the media access control layer determines not to start the DRX ON period timer according to the first indication message; or, the media access control layer determines not to start the DRX ON period timer based on monitoring the LP-WUS.
  • the processing unit 1402 is further used to: when monitoring the LP-WUS, not monitor PDCCH monitoring adaptive indication information, wherein the PDCCH monitoring adaptive indication information is used to indicate skipping of at least one of PDCCH or search space group switching.
  • the LP-WUS is used to wake up the terminal device, including: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and a first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and a second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal device group, and
  • the processing unit 1402 is further used to monitor the PDCCH within a fifth time period after monitoring the LP-WUS; if the PDCCH of the network device is not received within the fifth time period, start monitoring the LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the transceiver unit 1401 is further configured to: receive configuration information of the LP-WUS from the network device before the processing unit 1402 monitors the LP-WUS.
  • the LP-WUS adopts on-off keying OOK modulation or frequency shift keying FSK modulation.
  • the LP-WUS is received by a first circuit of the terminal device
  • the PDCCH is received by a second circuit of the terminal device, and the first circuit and the second circuit are different.
  • the communication device 1400 when used to implement the function of the network device in the embodiment shown in Figure 9 above, it may specifically include: the processing unit 1402 is used to determine whether the terminal device meets the conditions for monitoring the low power wake-up signal LP-WUS; wherein the LP-WUS is used to wake up the terminal device; the transceiver unit 1401 is used for the processing unit 1402 to send the LP-WUS to the terminal device when it determines that the terminal device meets the conditions for monitoring the LP-WUS and there is a demand for sending the LP-WUS.
  • the processing unit 1402 is used to determine whether the terminal device meets the conditions for monitoring the low power wake-up signal LP-WUS; wherein the LP-WUS is used to wake up the terminal device; the transceiver unit 1401 is used for the processing unit 1402 to send the LP-WUS to the terminal device when it determines that the terminal device meets the conditions for monitoring the LP-WUS and there is a demand for sending the LP-WUS.
  • the processing unit 1402 when the processing unit 1402 determines that the terminal device meets the conditions for monitoring the LP-WUS, it is used to: control the transceiver unit 1401 to send first information to the terminal device, wherein the first information is used to instruct the terminal device to monitor the LP-WUS; or determine that the transceiver unit 1401 has not sent scheduling information to the terminal device within a first time period.
  • the processing unit 1402 is further used to: control the transceiver unit 1401 to receive first channel feedback information from the terminal device, the first channel feedback information being used to indicate that a first channel quality parameter is greater than or equal to a first threshold, the first channel quality parameter being at least one of the following: reference signal received power RSRP, reference signal received quality RSRQ, detection probability of LP-WUS, or detection probability of low power synchronization signal LP-SS.
  • the transceiver unit 1401 when the transceiver unit 1401 sends the LP-WUS to the terminal device when there is a demand to send the LP-WUS, it is used to: start at a first moment and send the LP-WUS to the terminal device when there is a demand to send the LP-WUS.
  • the first moment is related to the second moment
  • the second moment is the moment when the network device sends the first information, or is the end moment of the first duration.
  • the processing unit 1402 is further used to: determine whether the terminal device meets the conditions for monitoring the downlink control channel PDCCH; when determining that the terminal device meets the conditions for monitoring the PDCCH and there is a need to send PDCCH, control the transceiver unit 1401 to send the PDCCH to the terminal device.
  • the processing unit 1402 is used to: meet the first condition and/or the second condition; wherein the first condition includes: when there is a demand for sending the LP-WUS, controlling the transceiver unit 1401 to send the LP-WUS to the terminal device; or, controlling the transceiver unit 1401 to receive uplink service information; or, controlling the transceiver unit 1401 not to send the LP-WUS within a second time period; the second condition includes: controlling the transceiver unit 1401 to receive second channel feedback information from the terminal device, the second channel feedback information being used to indicate that a second channel quality parameter is less than or equal to a second threshold, the second channel quality parameter being at least one of the following: reference signal received power RSRP, reference signal received quality RSRQ, detection probability of LP-WUS, or detection probability of low power synchronization signal LP-SS.
  • the first condition includes: when there is a demand for sending the LP-WUS, controlling the transceiver unit 1401 to send the LP-WUS to
  • the processing unit 1402 controls the transceiver unit 1401 to transmit to the terminal device.
  • the processing unit 1402 controls the transceiver unit 1401 to transmit to the terminal device.
  • sending the PDCCH it is used to: start at the third moment and when there is a demand for sending the PDCCH, control the transceiver unit 1401 to send the PDCCH to the terminal device.
  • the processing unit 1402 controls the transceiver unit 1401 to send the PDCCH to the terminal device before the processing unit 1402 controls the transceiver unit 1401 to receive feedback information from the terminal device after a third moment, wherein the feedback information is used to instruct the terminal device not to monitor the LP-WUS or to start monitoring the PDCCH.
  • the third moment is related to a fourth moment
  • the fourth moment is the moment when the network device sends the LP-WUS, or the moment when the uplink service information transmission is completed, or the end moment of the second duration.
  • the terminal device is configured with connected discontinuous reception C-DRX; the transceiver unit 1401 is also used for: during the activation time, and when there is a demand to send the LP-WUS, when the LP-WUS is sent to the terminal device, not sending PDCCH to the terminal device.
  • the terminal device is configured with connected discontinuous reception C-DRX; the transceiver unit 1401 is also used to: send the LP-WUS to the terminal device when there is a need to send the LP-WUS within the activation time or outside the activation time; if after sending the LP-WUS within the activation time, determine to send the PDCCH to the terminal device when there is a need to send the PDCCH after a third time period from the moment of sending the LP-WUS; or, if after sending the LP-WUS outside the activation time, determine to send the PDCCH to the terminal device when there is a need to send the PDCCH after a fourth time period from the moment of sending the LP-WUS; wherein the third time period and the fourth time period are the same or different.
  • the activation time includes at least one of the following: the time of at least one of the running timers including the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer; or, the time when a scheduling request has been sent on a physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives a random access response to a random access preamble, the time when a new transmission indicated by a PDCCH addressed by a cell radio network temporary identifier C-RNTI of a media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in a contention-based random access preamble.
  • the transceiver unit 1401 may also be used to not send the LP-WUS to the terminal device after sending the LP-WUS to the terminal device, and the processing unit 1402 may also be used to start a first timer, and the activation time includes the time when the first timer runs.
  • the transceiver unit 1401 may also be used to: when it is determined that there is a need to send a PDCCH within the time when the first timer within the activation time is running, send a PDCCH to the terminal device.
  • the transceiver unit 1401 can also be used to: after sending the LP-WUS to the terminal device, not send the LP-WUS to the terminal device and starting from the activation time closest to the time when the network device sends the LP-WUS, when there is a PDCCH sending demand, send PDCCH to the terminal device.
  • the terminal device is configured to monitor the downlink control information DCP encrypted by the power-saving wireless network temporary identifier; the transceiver unit 1401 is also used to: when it is determined that there is a need to send the LP-WUS, when the LP-WUS is sent to the terminal device, not send the DCP to the terminal device.
  • the processing unit 1402 is further used to: if the transceiver unit 1401 does not send the DCP at the sending timing of the DCP, determine that the DRX ON period timer is not started.
  • the transceiver unit 1401 may also be used for: when there is a demand to send the LP-WUS, when sending the LP-WUS to the terminal device, not sending PDCCH monitoring adaptation indication information to the terminal device, the PDCCH monitoring adaptation indication information being used to indicate skipping of at least one of PDCCH or search space group switching.
  • the LP-WUS is used to wake up the terminal device, including: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and a first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and a second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal device group, and
  • the transceiver unit 1401 is also used to: after sending the LP-WUS to the terminal device, the network device sends a PDCCH to the terminal device when there is a PDCCH sending requirement within a fifth time period; if it is determined that if the PDCCH is not sent to the terminal device within the fifth time period, the network device sends the LP-WUS to the terminal device when there is a LP-WUS sending requirement; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the transceiver unit 1401 is also used to: when the processing unit 1402 determines that the terminal device meets the conditions for monitoring the LP-WUS and there is a demand for sending the LP-WUS, before sending the LP-WUS to the terminal device, send the configuration information of the LP-WUS to the terminal device.
  • the LP-WUS adopts on-off keying OOK modulation or frequency shift keying FSK modulation.
  • the communication device 1400 when used to implement the function of the terminal device in the embodiment shown in Figure 13 above, it may specifically include: the transceiver unit is used to receive information for configuring connected state discontinuous reception C-DRX from a network device; the processing unit 1402 is used to monitor the low power wake-up signal LP-WUS within the activation time; the LP-WUS is used to wake up the terminal device; and to deactivate the monitoring PDCCH within the activation time.
  • the activation time includes at least one of the following: the time of at least one of the running timers including the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer; or, the time when a scheduling request has been sent on a physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives a random access response to a random access preamble, the time when a new transmission indicated by a PDCCH addressed by a cell radio network temporary identifier C-RNTI of a media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in a contention-based random access preamble.
  • the processing unit 1402 is also used to: if the LP-WUS is monitored within the activation time, the terminal device monitors the PDCCH after a third time period from the moment the LP-WUS is monitored; or, monitor the LP-WUS outside the activation time; if the LP-WUS is monitored outside the activation time, the terminal device monitors the PDCCH after a fourth time period from the moment the LP-WUS is monitored; wherein the third time period and the fourth time period are the same or different.
  • the processing unit 1402 is further configured to: after detecting the LP-WUS, stop monitoring the LP-WUS and start a first timer, wherein the activation time includes the running time of the first timer.
  • processing unit 1402 is further used to: start monitoring the PDCCH within the running time of the first timer within the activation time.
  • the processing unit 1402 is further configured to: after detecting the LP-WUS, stop monitoring the LP-WUS and start monitoring the PDCCH at the activation time closest to the time when the LP-WUS is detected.
  • the terminal device is configured to monitor downlink control information DCP encrypted with a power-saving radio network temporary identifier; the processing unit 1402 is further used to: when monitoring the LP-WUS, not monitor the DCP.
  • the processing unit 1402 is further used to: determine not to start the DRX ON period timer if the DCP is not detected during the monitoring period of the DCP when monitoring the LP-WUS.
  • the processing unit 1402 when determining not to start the DRX ON period timer, is used to: the physical layer sends a first indication message to the media access control layer of the terminal device, the first indication message being used to indicate that a decoding result of the DCP is 0; the media access control layer determines not to start the DRX ON period timer according to the first indication message; or, the media access control layer determines not to start the DRX ON period timer based on monitoring the LP-WUS.
  • the processing unit 1402 is further used to: when monitoring the LP-WUS, not monitor PDCCH monitoring adaptive indication information, the PDCCH monitoring adaptive indication information being used to indicate skipping of at least one of PDCCH or search space group switching.
  • the LP-WUS is used to wake up the terminal device, including: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and a first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and a second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal device group, and the
  • the processing unit 1402 is further used to: after monitoring the LP-WUS, monitor the PDCCH within a fifth time period; if the transceiver unit 1401 does not receive the PDCCH of the network device within the fifth time period, start monitoring the LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the transceiver unit 1401 is further used to: receive configuration information of the LP-WUS from a network device before the processing unit 1402 monitors the LP-WUS within the activation time.
  • the LP-WUS adopts on-off keying OOK modulation or frequency shift keying FSK modulation.
  • the LP-WUS is received by a first circuit of the terminal device
  • the PDCCH is received by a second circuit of the terminal device, and the first circuit and the second circuit are different.
  • the communication device 1400 when used to implement the function of the network terminal device in the embodiment shown in Figure 13 above, it may specifically include: the transceiver unit 1401 is used to send information configuring connected state discontinuous reception C-DRX to the terminal device; and when there is a need to send a low power wake-up signal LP-WUS within the activation time, send LP-WUS to the terminal device; the LP-WUS is used to wake up the terminal device; the processing unit 1402 is used to deactivate the sending of PDCCH.
  • the transceiver unit 1401 is used to send information configuring connected state discontinuous reception C-DRX to the terminal device; and when there is a need to send a low power wake-up signal LP-WUS within the activation time, send LP-WUS to the terminal device; the LP-WUS is used to wake up the terminal device; the processing unit 1402 is used to deactivate the sending of PDCCH.
  • the activation time includes at least one of the following: the time of at least one of the running timers including the DRX ON period timer, the DRX inactivity timer, the DRX downlink retransmission timer, the DRX uplink retransmission timer, or the random access contention resolution timer; or, the time when a scheduling request has been sent on a physical uplink control channel PUCCH and the scheduling request is in a pending state; or, after the terminal device successfully receives a random access response to a random access preamble, the time when a new transmission indicated by a PDCCH addressed by a cell radio network temporary identifier C-RNTI of a media access control MAC entity has not been received, wherein the random access preamble is not selected by the MAC entity in a contention-based random access preamble.
  • the transceiver unit 1401 is also used for: if the LP-WUS is sent within the activation time, it is determined that after a third time period from the time when the LP-WUS is sent, a PDCCH is sent to the terminal device when there is a PDCCH sending demand; or, outside the activation time, when there is a LP-WUS sending demand, the LP-WUS is sent to the terminal device; if the LP-WUS is sent outside the activation time, it is determined that after a fourth time period from the time when the LP-WUS is sent, the PDCCH is sent to the terminal device when there is a PDCCH sending demand; wherein the third time period and the fourth time period are the same or different.
  • the transceiver unit 1401 is further used to: after sending the LP-WUS to the terminal device, determine not to send the LP-WUS to the terminal device, and the processing unit 1402 is further used to: start a first timer, and the activation time includes the time when the first timer runs.
  • the transceiver unit 1401 is further used to: when it is determined that there is a need to send PDCCH within the running time of the first timer within the activation time, send the PDCCH to the terminal device.
  • the transceiver unit 1401 is also used to: after sending the LP-WUS to the terminal device, not send the LP-WUS to the terminal device and starting from the activation time closest to the time when the network device sends the LP-WUS, when there is a PDCCH sending demand, send PDCCH to the terminal device.
  • the terminal device is configured to monitor the downlink control information DCP encrypted by the power-saving wireless network temporary identifier; the transceiver unit 1401 is also used to: when it is determined that there is a demand to send the LP-WUS, when sending the LP-WUS to the terminal device, not sending the DCP to the terminal device.
  • the processing unit 1402 is further used to: if the transceiver unit 1401 does not send the DCP at the sending timing of the DCP, determine that the DRX ON period timer is not started.
  • the transceiver unit 1401 is also used for: when it is determined that there is a need to send the LP-WUS, when sending the LP-WUS to the terminal device, not sending PDCCH monitoring adaptation indication information to the terminal device, the PDCCH monitoring adaptation indication information being used to indicate skipping of at least one of PDCCH or search space group switching.
  • the LP-WUS is used to wake up the terminal device, including: the LP-WUS includes an identifier of the terminal device, and the identifier of the terminal device is used to wake up the terminal device; or, the LP-WUS includes partial information of the identifier of the terminal device, and the partial information of the identifier of the terminal device and a first time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the first time domain position is related to the identifier of the terminal device; or, the LP-WUS includes partial information of the identifier of a terminal device group, and the partial information of the identifier of the terminal device group and a second time domain position occupied by the LP-WUS are used to wake up the terminal device, wherein the second time domain position is related to the identifier of the terminal device group; or, the LP-WUS includes the identifier of the terminal device group, and the identifier of the terminal device group is used to wake up the terminal device group, and the
  • the transceiver unit 1401 is further used to: after sending the LP-WUS to the terminal device, send the PDCCH to the terminal device when there is a need to send PDCCH within the fifth time period; determine if the PDCCH is not sent to the terminal device within the fifth time period, and send the LP-WUS to the terminal device when there is a need to send the LP-WUS; wherein the fifth time period is included in the LP-WUS, or the fifth time period is included in the configuration information of the LP-WUS.
  • the transceiver unit 1401 is further used to: when there is a LP-WUS sending demand within the activation time, before sending the LP-WUS to the terminal device, send the configuration information of the LP-WUS to the terminal device.
  • the LP-WUS adopts on-off keying OOK modulation or frequency shift keying FSK modulation.
  • each functional unit in the embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.
  • the embodiments of the present application further provide a communication device, as shown in FIG. 15 , the communication device 1500 may include a transceiver 1501 and a processor 1502.
  • the communication device 1500 may further include a memory 1503.
  • the memory 1503 may be disposed inside the communication device 1500 or outside the communication device 1500.
  • the processor 1502 may control the transceiver 1501 to receive and send signals, information, messages or data, etc.
  • the processor 1502 may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and a NP.
  • the processor 1502 may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • the transceiver 1501, the processor 1502 and the memory 1503 are interconnected.
  • the transceiver 1501, the processor 1502 and the memory 1503 are interconnected via a bus 1504;
  • the bus 1504 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus may be divided into an address bus, a data bus, a control bus and the like.
  • FIG15 is represented by only one thick line, but it does not mean that there is only one bus or one type of bus.
  • the memory 1503 is used to store programs, etc.
  • the program may include a program code, and the program code includes a computer operation instruction.
  • the memory 1503 may include a RAM, and may also include a non-volatile memory (non-volatile memory), such as one or more disk memories.
  • the processor 1502 executes the application stored in the memory 1503 to implement the above functions, thereby realizing the functions of the communication device 1500.
  • the communication device 1500 may be the network device in the above embodiment; or may be the terminal device in the above embodiment.
  • the transceiver 1501 can implement the transceiver operation performed by the terminal device in the embodiment shown in FIG9 ; the processor 1502 can implement other operations except the transceiver operation performed by the terminal device in the embodiment shown in FIG9 .
  • the transceiver 1501 can implement the transceiver operation performed by the terminal device in the embodiment shown in FIG9 ; the processor 1502 can implement other operations except the transceiver operation performed by the terminal device in the embodiment shown in FIG9 .
  • the transceiver 1501 can implement the transceiver operation performed by the network device in the embodiment shown in FIG9 ; the processor 1502 can implement other operations except the transceiver operation performed by the network device in the embodiment shown in FIG9 .
  • the related descriptions please refer to the related descriptions in the embodiment shown in FIG9 above, which will not be described in detail here.
  • the transceiver 1501 may implement the transceiver operation performed by the terminal device in the embodiment shown in FIG. 13; the processor 1502 may implement the operation shown in FIG. 13.
  • the specific descriptions can be referred to the relevant descriptions in the embodiment shown in FIG. 13 above, which will not be described in detail here.
  • the transceiver 1501 can implement the transceiver operation performed by the network device in the embodiment shown in FIG13; the processor 1502 can implement other operations except the transceiver operation performed by the network device in the embodiment shown in FIG13.
  • the processor 1502 can implement other operations except the transceiver operation performed by the network device in the embodiment shown in FIG13.
  • an embodiment of the present application provides a communication system, which may include the terminal device and network device involved in the above embodiments.
  • An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program.
  • the computer program When the computer program is executed by a computer, the computer can implement the communication method provided by the above method embodiment.
  • An embodiment of the present application further provides a computer program product, which is used to store a computer program.
  • the computer program When the computer program is executed by a computer, the computer can implement the communication method provided by the above method embodiment.
  • An embodiment of the present application also provides a chip, including a processor, wherein the processor is coupled to a memory and is used to call a program in the memory so that the chip implements the communication method provided by the above method embodiment.
  • An embodiment of the present application also provides a chip, which is coupled to a memory and is used to implement the communication method provided in the above method embodiment.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

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Abstract

一种通信方法及装置，提供终端设备监测LP-WUS的方案。终端设备确定是否满足监测低功耗唤醒信号LP-WUS的条件；所述终端设备在确定满足监测所述LP-WUS的条件，监测所述LP-WUS。其中，所述LP-WUS用于唤醒所述终端设备。由此，可以提供如何激活终端设备监测LP-WUS的相关流程。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2023年02月06日提交中国国家知识产权局、申请号为202310145346.X、申请名称为“一种连接态下监测LP-WUS的方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中；本申请要求在2023年03月13日提交中国国家知识产权局、申请号为202310303785.9、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
一般情况下，终端设备接收来自网络设备的任何下行信号时都是用相同的接收模块(或者接收机，或者接收电路)。例如，可以将完成这些功能(或执行相关步骤)的模块称为主电路。然而，当终端设备采用主电路接收下行信号时，功耗较高。
为了降低终端设备接收下行信号带来的功耗，一种可能的方法是，终端设备可以使用一个单独的低功耗小电路接收部分下行信号，这个小电路可以被称为唤醒电路或低功耗电路或唤醒无线电路(low power wake up radio，LP-WUR)或其他名字。唤醒电路接收的下行信号可以被称为低功耗唤醒信号(low power wake up signal，LP-WUS)(也称为唤醒信号)。
在IDLE/INACTIVE态下，LP-WUS可以用来携带寻呼相关的信息。在连接(CONNECTED)态下，LP-WUS可以用来携带调度相关的信息，例如LP-WUS用于指示终端设备是否需要开启主电路接收调度信息(如是否需要监测物理下行控制信道(physical downlink control channel，PDCCH))。但是，对于连接态下如何监测LP-WUS目前还没有解决方案。
发明内容
本申请提供终端设备监测LP-WUS的方案。
第一方面，本申请提供了一种通信方法，该方法可以应用于终端设备，终端设备中的处理器、芯片或者功能模块。以该方法应用于终端设备为例，该方法可以包括：终端设备确定是否满足监测低功耗唤醒信号LP-WUS的条件；所述终端设备在确定满足监测所述LP-WUS的条件，监测所述LP-WUS。其中，所述LP-WUS用于唤醒所述终端设备。由此，提供一种终端设备监测LP-WUS的方案。
在一个可能的设计中，所述终端设备确定满足监测所述LP-WUS的条件的方法可以为：所述终端设备可以从网络设备接收第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS。这样，网络设备可以通过第一信息直接指示终端设备监测LP-WUS，实现较为简单，且可以避免终端设备由于漏检调度信息导致终端设备和网络设备无法对齐是否监测LP-WUS。
在一个可能的设计中，所述终端设备确定满足监测所述LP-WUS的条件的方法可以为：所述终端设备确定在第一时长内未从所述网络设备接收到调度信息。这样，终端设备可以根据是否收到调度信息自行确定可以监测LP-WUS，从而节省信令开销。
在一个可能的设计中，所述终端设备确定满足监测所述LP-WUS的条件，还可以包括如下方法：所述终端设备确定第一信道质量参数大于或者等于第一阈值，所述第一信道质量参数为如下至少一种：参考信号接收功率(reference signal received power，RSRP)、参考信号接收质量(reference signal received quality，RSRQ)、LP-WUS的检测概率或低功耗同步信号(low-power synchronization signal，LP-SS)检测概率。由此，终端设备可以进一步结合当前信道实际情况来确定是否监测LP-WUS，避免由于信道状态较差导致LP-WUS监测失败。
在一个可能的设计中，所述终端设备可以在第一时刻开始监测所述LP-WUS。这样可以确定何时终端设备开始监测LP-WUS，有利于终端设备和网络设备对齐终端设备开始监测LP-WUS的时间。
在一个可能的设计中，所述第一时刻与第二时刻相关，所述第二时刻可以为所述终端设备接收到所述第一信息的时刻，或者为所述第一时长的结束时刻。这样可以基于第二时刻确定第一时刻的时间位置， 从而确定何时终端设备开始监测LP-WUS，有利于终端设备和网络设备对齐终端设备开始监测LP-WUS的时间。
在一个可能的设计中，所述终端设备监测所述LP-WUS时，所述终端设备可以确定是否满足监测PDCCH的条件；所述终端设备在确定满足监测所述PDCCH的条件，监测所述PDCCH。这样可以确定终端设备在监测LP-WUS时，何种情况下要监测PDCCH。
在一个可能的设计中，所述终端设备确定满足监测所述PDCCH的条件，方法可以为：满足第一条件和/或第二条件。其中，所述第一条件可以包括：所述终端设备从网络设备监测到所述LP-WUS；或者，所述终端设备发送上行业务信息；或者，所述终端设备在第二时长内未监测到所述LP-WUS。所述第二条件包括：所述终端设备确定第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：RSRP、RSRQ、LP-WUS的检测概率或LP-SS检测概率。这样可以确定终端设备如何开始监测PDCCH。
在一个可能的设计中，所述终端设备可以在第三时刻开始监测所述PDCCH。这样可以确定何时终端设备可以开始监测PDCCH，有利于终端设备和网络设备对齐终端设备开始监测PDCCH的时间。
在一个可能的设计中，所述终端设备监测所述PDCCH之前，所述终端设备可以在第三时刻之后向所述网络设备发送反馈信息，所述反馈信息用于指示所述终端设备不监测所述LP-WUS或者所述终端设备开始监测所述PDCCH。这样可以使得网络设备和终端设备对齐终端设备开始监测PDCCH的时间。
在一个可能的设计中，所述第三时刻与第四时刻相关，所述第四时刻可以为所述终端设备监测到所述LP-WUS的时刻，或者所述上行业务信息传输完成的时刻，或者所述第二时长的结束时刻。这样可以确定何时终端设备开始监测PDCCH，有利于终端设备和网络设备对齐终端设备开始监测PDCCH的时间。
在一个可能的设计中，所述终端设备被配置连接态非连续接收(connected discontinuous reception，C-DRX)，所述终端设备可以在激活时间内监测所述LP-WUS时，不监测PDCCH。由此可以确定在终端设备配置了C-DRX的情况下，终端设备监测LP-WUS的具体行为。终端设备监测所述LP-WUS时，即使处于激活时间内也不监测PDCCH，有利于节省终端设备的功耗。
在一个可能的设计中，所述终端设备被配置连接态非连续接收C-DRX；所述终端设备可以在激活时间内或者所述激活时间外监测所述LP-WUS；若所述终端设备在所述激活时间内监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH；或者，若所述终端设备在所述激活时间外监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。由此可以确定在终端设备配置了C-DRX的情况下，终端设备监测LP-WUS的具体行为以及开始监测PDCCH方法。
在一个可能的设计中，所述激活时间可以包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制(MAC)实体的小区无线网络临时标识符(C-RNTI)所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。由此可以使得终端设备确定哪些时间属于激活时间。
在一个可能的设计中，所述终端设备监测到所述LP-WUS后，可以停止监测所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。这样可以在终端设备监测到LP-WUS后，令终端设备立刻处于激活时间，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述终端设备在所述激活时间内的所述第一定时器运行的时间内开始监测PDCCH。这样可以在终端设备监测到LP-WUS后令终端设备立刻开始监测PDCCH，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述终端设备监测到所述LP-WUS后，停止监测所述LP-WUS并在距离监测到所述LP-WUS的时刻最近的所述激活时间开始监测PDCCH。这样不需要引入额外的定时器，实现PDCCH监测的复杂度较低。
在一个可能的设计中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息(DCI with cyclic redundancy check scrambled by power saving radio network temporary identifier，DCP)； 所述终端设备在监测所述LP-WUS时，不监测所述DCP。由此可以确定在终端设备配置了DCP的情况下，终端设备监测LP-WUS的具体行为。
在一个可能的设计中，若所述终端设备在监测所述LP-WUS时未在所述DCP的监测时机监测到所述DCP，所述终端设备确定不启动DRX ON时段定时器。由此可以确定在终端设备配置了DCP的情况下，终端设备监测LP-WUS的具体行为。终端设备监测LP-WUS时，不监测DCP，有利于节省终端设备的功耗。
在一个可能的设计中，所述终端设备确定不启动所述DRX ON时段定时器，方法可以为：所述终端设备的物理层向所述终端设备的媒体接入控制层发送第一指示信息，所述第一指示信息用于指示所述DCP的解码结果为0；所述终端设备的媒体接入控制层根据所述第一指示信息确定不启动所述DRX ON时段定时器；或者，所述终端设备的媒体接入控制层根据所述终端设备在监测所述LP-WUS，确定不启动所述DRX ON时段定时器。由此终端设备可以确定不启动所述DRX ON时段定时器的具体方法。
在一个可能的设计中，所述终端设备在监测所述LP-WUS时，不监测PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。由此可以确定在终端设备配置了PDCCH监测自适应指示信息的情况下，终端设备监测LP-WUS的具体行为。终端设备监测LP-WUS时，不监测PDCCH监测自适应指示信息，有利于节省终端设备的功耗。
在一个可能的设计中，所述LP-WUS用于唤醒所述终端设备，方法可以为：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。由此可以通过多种方式基于LP-WUS灵活地唤醒终端设备。
在一个可能的设计中，所述终端设备监测到所述LP-WUS后，在第五时长内监测PDCCH；若在所述第五时长内未接收到所述网络设备的PDCCH时，所述终端设备开始监测所述LP-WUS；其中，所述第五时长可以包含于所述LP-WUS，或者所述第五时长可以包含于所述LP-WUS的配置信息。这样可以基于第五时长降低监测LP-WUS的时延，另一方面也可以约束网络设备的调度时间，避免终端设备开启主电路监测PDCCH的时间较长，有利于终端设备的节能。
在一个可能的设计中，在所述终端设备监测所述LP-WUS之前，所述终端设备从所述网络设备接收所述LP-WUS的配置信息。由此可以使得终端设备准确获得LP-WUS的相关配置。
在一个可能的设计中，所述LP-WUS采用开关键控(on off keying，OOK)OOK调制，或频移键控(frequency shift keying，FSK)调制，或OOK与FSK结合的调制方式。从而可以降低终端设备的唤醒电路的功耗。
在一个可能的设计中，所述LP-WUS由所述终端设备的第一电路接收，PDCCH由所述终端设备的第二电路接收，所述第一电路和所述第二电路不同。由此可以降低终端设备的功耗。
第二方面，本申请提供了一种通信方法，该方法可以应用于网络设备，网络设备中的处理器、芯片或者一个功能模块。以应用于网络设备为例，该方法可以包括：网络设备确定终端设备是否满足监测低功耗唤醒信号LP-WUS的条件；所述网络设备确定所述终端设备满足监测所述LP-WUS的条件，并且有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。其中，所述LP-WUS用于唤醒所述终端设备。基于此，网络设备可以确定何时可以向终端设备发送LP-WUS。其中，本申请中，所述网络设备有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS，可以理解为所述网络设备确定所述终端设备监测LP-WUS。
在一个可能的设计中，所述网络设备确定所述终端设备满足监测所述LP-WUS的条件，方法可以为：所述网络设备向所述终端设备发送第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS。这样，网络设备可以通过第一信息直接指示终端设备监测LP-WUS，实现较为简单，且可以避免终端设备由于漏检调度信息导致终端设备和网络设备无法对齐是否监测LP-WUS。
在一个可能的设计中，所述网络设备确定在第一时长内未向所述终端设备发送调度信息。这样，网 络设备可以根据是否发送调度信息自行确定何时可以发送LP-WUS，从而节省信令开销。
在一个可能的设计中，所述网络设备确定所述终端设备满足监测所述LP-WUS的条件，还包括如下方法：所述网络设备从所述终端设备接收第一信道反馈信息，所述第一信道反馈信息用于指示第一信道质量参数大于或者等于第一阈值，所述第一信道质量参数为如下至少一种：RSRP、RSRQ、LP-WUS的检测概率或LP-SS检测概率。由此，网络设备可以进一步结合当前信道实际情况来确定是否可以发送LP-WUS，避免由于信道状态较差导致LP-WUS发送失败。
在一个可能的设计中，所述网络设备有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS，方法可以为：所述网络设备可以在第一时刻开始，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。这样可以确定何时网络设备可以开始发送LP-WUS，有利于终端设备和网络设备对齐终端设备开始监测LP-WUS的时间。
在一个可能的设计中，所述第一时刻与所述第二时刻相关，所述第二时刻为所述网络设备发送所述第一信息的时刻，或者为所述第一时长的结束时刻。这样可以基于第二时刻确定第一时刻的时间位置，从而确定何时网络设备可以开始发送LP-WUS，有利于终端设备和网络设备对齐终端设备开始监测LP-WUS的时间。
在一个可能的设计中，所述网络设备确定所述终端设备满足监测所述LP-WUS的条件后，可以确定所述终端设备是否满足监测下行控制信道PDCCH的条件；所述网络设备在确定所述终端设备满足监测所述PDCCH的条件后，并且有PDCCH发送需求时，向所述终端设备发送所述PDCCH。这样可以确定网络设备何种情况下可以发送PDCCH。其中，本申请中，所述网络设备有PDCCH发送需求时，向所述终端设备发送所述PDCCH，可以理解为所述网络设备确定所述终端设备监测PDCCH。
在一个可能的设计中，所述网络设备确定所述终端设备满足监测所述PDCCH的条件，方法可以为：满足第一条件和/或第二条件；其中，所述第一条件可以包括：所述网络设备有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；或者，所述网络设备接收上行业务信息；或者，所述网络设备在第二时长内未发送所述LP-WUS；所述第二条件可以包括：所述网络设备从所述终端设备接收第二信道反馈信息，所述第二信道反馈信息用于指示第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：RSRP、RSRQ、LP-WUS的检测概率或LP-SS检测概率。这样可以确定网络设备如何可以发送PDCCH。
在一个可能的设计中，所述网络设备有PDCCH发送需求时，向所述终端设备发送所述PDCCH，方法可以为：所述网络设备可以在第三时刻开始，并且有所述PDCCH发送需求时，向所述终端设备发送所述PDCCH。这样可以确定何时网络设备可以开始发送PDCCH，有利于终端设备和网络设备对齐终端设备开始监测PDCCH的时间。
在一个可能的设计中，所述网络设备有PDCCH发送需求时，向所述终端设备发送所述PDCCH之前，所述网络设备在第三时刻之后从所述终端设备接收反馈信息，所述反馈信息用于指示所述终端设备不监测所述LP-WUS或者所述终端设备开始监测所述PDCCH。这样可以使得网络设备和终端设备对齐终端设备开始监测PDCCH的时间。
在一个可能的设计中，所述第三时刻与第四时刻相关，所述第四时刻可以为所述网络设备发送所述LP-WUS的时刻，或者所述上行业务信息传输完成的时刻，或者所述第二时长的结束时刻。这样可以确定何时网络设备可以开始发送PDCCH，有利于终端设备和网络设备对齐终端设备开始监测PDCCH的时间。
在一个可能的设计中，所述终端设备被配置C-DRX；所述网络设备在激活时间内，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH。由此可以确定在终端设备配置了C-DRX的情况下，网络设备发送LP-WUS的具体行为。在终端设备监测所述LP-WUS时，即使处于激活时间内，网络设备也不发送PDCCH，使得终端设备可以不监测PDCCH，有利于节省终端设备的功耗。
在一个可能的设计中，所述终端设备被配置C-DRX；所述网络设备在激活时间内或所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；若所述网络设备在激活时间内发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第三时长后，有PDCCH发送需求时向所述终端设备发送PDCCH；或者，若所述网络设备在所述激活时间外发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第四时长后，有所述PDCCH发送需求时向所述终 端设备发送所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。由此可以确定在终端设备配置了C-DRX的情况下，网络设备发送LP-WUS的具体行为以及可以发送PDCCH方法。
在一个可能的设计中，所述激活时间可以包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。由此可以使得网络设备确定哪些时间属于激活时间。
在一个可能的设计中，所述网络设备向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。这样可以在网络设备发送LP-WUS后，令终端设备立刻处于激活时间，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述网络设备确定在所述激活时间内的所述第一定时器运行的时间内开始有PDCCH发送需求时，向所述终端设备发送PDCCH。这样可以在网络设备发送LP-WUS后令终端设备立刻开始监测PDCCH，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述网络设备向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并在距离所述网络设备发送所述LP-WUS的时刻最近的所述激活时间开始，有PDCCH发送需求时，向所述终端设备发送PDCCH。这样不需要引入额外的定时器，实现PDCCH发送的复杂度较低。
在一个可能的设计中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述网络设备确定有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送所述DCP。由此可以确定在终端设备配置了DCP的情况下，网络设备发送LP-WUS的具体行为。
在一个可能的设计中，若所述网络设备未在所述DCP的发送时机发送所述DCP，所述网络设备确定DRX ON时段定时器不启动。由此可以确定在终端设备配置了DCP的情况下，网络设备发送LP-WUS的具体行为。同时可以使得终端设备监测LP-WUS时，不监测DCP，有利于节省终端设备的功耗。
在一个可能的设计中，所述网络设备有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。由此可以确定在终端设备配置了PDCCH监测自适应指示信息的情况下，网络设备发送LP-WUS的具体行为。同时使得终端设备监测LP-WUS时，不监测PDCCH监测自适应指示信息，有利于节省终端设备的功耗。
在一个可能的设计中，所述LP-WUS用于唤醒所述终端设备，方法可以为包括：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。由此可以通过多种方式基于LP-WUS灵活地唤醒终端设备。
在一个可能的设计中，所述网络设备向所述终端设备发送所述LP-WUS后，所述网络设备在第五时长内有PDCCH发送需求时向所述终端设备发送PDCCH；所述网络设备确定若在所述第五时长内未向所述终端设备发送PDCCH时，所述网络设备有所述LP-WUS发送需求时向所述终端设备发送所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。这样可以基于第五时长降低终端设备监测LP-WUS的时延，另一方面也可以约束网络设备的调度时间，避免终端设备开启主电路监测PDCCH的时间较长，有利于终端设备的节能。
在一个可能的设计中，在所述网络设备确定所述终端设备满足监测所述LP-WUS的条件，并且有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS之前，所述网络设备向所述终端设备发送所 述LP-WUS的配置信息。由此可以使得终端设备准确获得LP-WUS的相关配置。
在一个可能的设计中，所述LP-WUS采用开关键控OOK调制，或频移键控FSK调制，或OOK与FSK结合的调制方式。从而可以降低终端设备的唤醒电路的功耗。
第三方面，本申请提供了一种通信方法，该方法可以应用于终端设备，终端设备中的处理器、芯片或者一个功能模块。该方法可以包括：终端设备被网络设备配置C-DRX；所述终端设备在激活时间内监测LP-WUS，并在所述激活时间内去激活监测PDCCH。其中，所述LP-WUS用于唤醒所述终端设备。由此可以确定在终端设备配置了C-DRX的情况下，终端设备监测LP-WUS的具体行为。终端设备监测所述LP-WUS时，即使处于激活时间内也不监测PDCCH，有利于节省终端设备的功耗。
在一个可能的设计中，所述激活时间可以包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。由此可以使得终端设备确定在哪些时间属于激活时间。
在一个可能的设计中，若所述终端设备在所述激活时间内监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH；或者，所述终端设备也可以在所述激活时间外监测所述LP-WUS；若所述终端设备在所述激活时间外监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。由此可以确定在终端设备配置了C-DRX的情况下，终端设备监测LP-WUS的具体行为以及开始监测PDCCH方法。
在一个可能的设计中，所述终端设备监测到所述LP-WUS后，停止监测所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。这样可以在终端设备监测到LP-WUS后，令终端设备立刻处于激活时间，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述终端设备在所述激活时间内的所述第一定时器运行的时间内开始监测PDCCH。这样可以在终端设备监测到LP-WUS后令终端设备立刻开始监测PDCCH，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述终端设备监测到所述LP-WUS后，停止监测所述LP-WUS并在距离监测到所述LP-WUS的时刻最近的所述激活时间开始监测PDCCH。这样不需要引入额外的定时器，实现PDCCH监测的复杂度较低。
在一个可能的设计中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述终端设备在监测所述LP-WUS时，不监测所述DCP。由此可以确定在终端设备配置了DCP的情况下，终端设备监测LP-WUS的具体行为。
在一个可能的设计中，若所述终端设备在监测所述LP-WUS时未在所述DCP的监测时机监测到所述DCP，所述终端设备确定不启动DRX ON时段定时器。由此可以确定在终端设备配置了DCP的情况下，终端设备监测LP-WUS的具体行为。终端设备监测LP-WUS时，不监测DCP，有利于节省终端设备的功耗。
在一个可能的设计中，所述终端设备确定不启动所述DRX ON时段定时器，方法可以为：所述终端设备的物理层向所述终端设备的媒体接入控制层发送第一指示信息，所述第一指示信息用于指示所述DCP的解码结果为0；所述终端设备的媒体接入控制层根据所述第一指示信息确定不启动所述DRX ON时段定时器；或者，所述终端设备的媒体接入控制层根据所述终端设备在监测所述LP-WUS，确定不启动所述DRX ON时段定时器。由此终端设备可以确定不启动所述DRX ON时段定时器的具体方法。
在一个可能的设计中，所述终端设备在监测所述LP-WUS时，不监测PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。由此可以确定在终端设备配置了PDCCH监测自适应指示信息的情况下，终端设备监测LP-WUS的具体行为。终端设备监测LP-WUS时，不监测PDCCH监测自适应指示信息，有利于节省终端设备的功耗。
在一个可能的设计中，所述LP-WUS用于唤醒所述终端设备，方法可以为：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端 设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。由此可以通过多种方式基于LP-WUS灵活地唤醒终端设备。
在一个可能的设计中，所述终端设备监测到所述LP-WUS后，在第五时长内监测PDCCH；若在所述第五时长内未接收到所述网络设备的PDCCH时，所述终端设备开始监测所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。这样可以基于第五时长降低监测LP-WUS的时延，另一方面也可以约束网络设备的调度时间，避免终端设备开启主电路监测PDCCH的时间较长，有利于终端设备的节能。
在一个可能的设计中，在所述终端设备在激活时间内监测所述LP-WUS之前，所述终端设备可以从网络设备接收所述LP-WUS的配置信息。由此可以使得终端设备准确获得LP-WUS的相关配置。
在一个可能的设计中，所述LP-WUS采用开关键控OOK调制、频移键控FSK调制，或OOK与FSK结合的调制方式。从而可以降低终端设备的唤醒电路的功耗。
在一个可能的设计中，所述LP-WUS由所述终端设备的第一电路接收，PDCCH由所述终端设备的第二电路接收，所述第一电路和所述第二电路不同。由此可以降低终端设备的功耗。
第四方面，本申请提供了一种通信方法，该方法可以应用于网络设备，网络设备中的处理器、芯片或者一个功能模块。该方法可以包括：网络设备为终端设备配置C-DRX；所述网络设备在激活时间内有低功耗唤醒信号LP-WUS发送需求时，向所述终端设备发LP-WUS；所述LP-WUS用于唤醒所述终端设备，并去激活发送PDCCH。由此可以确定在终端设备配置了C-DRX的情况下，网络设备发送LP-WUS的具体行为。在终端设备监测所述LP-WUS时，即使处于激活时间内，网络设备也不发送PDCCH，使得终端设备可以不监测PDCCH，有利于节省终端设备的功耗。
在一个可能的设计中，所述激活时间可以包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。由此可以使得网络设备确定哪些时间属于激活时间。
在一个可能的设计中，若所述网络设备在所述激活时间内发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第三时长后，有PDCCH发送需求时向所述终端设备发送PDCCH；或者，所述网络设备还可以在所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；若所述网络设备在所述激活时间外发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第四时长后，有所述PDCCH发送需求时向所述终端设备发送所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。由此可以确定在终端设备配置了C-DRX的情况下，网络设备发送LP-WUS的具体行为以及可以发送PDCCH方法。
在一个可能的设计中，所述网络设备向所述终端设备发送所述LP-WUS后，确定不向所述终端设备所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。这样可以在网络设备发送LP-WUS后，令终端设备立刻处于激活时间，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述网络设备确定在所述激活时间内的所述第一定时器运行的时间内开始有PDCCH发送需求时，向所述终端设备发送所述PDCCH。这样可以在网络设备发送LP-WUS后令终端设备立刻开始监测PDCCH，从而降低终端设备监测PDCCH的时延。
在一个可能的设计中，所述网络设备向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并在距离所述网络设备发送所述LP-WUS的时刻最近的所述激活时间开始，有PDCCH发送需求时，向所述终端设备发送PDCCH。这样不需要引入额外的定时器，实现PDCCH发送的复杂度较低。
在一个可能的设计中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述网络设备确定有所述LP-WUS发送需求时，向所述终端设备发送LP-WUS时，不向所述终端设备发送所述DCP。由此可以确定在终端设备配置了DCP的情况下，网络设备发送LP-WUS的具体行为。
在一个可能的设计中，若所述网络设备未在所述DCP的发送时机发送所述DCP，所述网络设备确定DRX ON时段定时器不启动。由此可以确定在终端设备配置了DCP的情况下，网络设备发送LP-WUS的具体行为。同时可以使得终端设备监测LP-WUS时，不监测DCP，有利于节省终端设备的功耗。
在一个可能的设计中，所述网络设备确定有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。由此可以确定在终端设备配置了PDCCH监测自适应指示信息的情况下，网络设备发送LP-WUS的具体行为。同时使得终端设备监测LP-WUS时，不监测PDCCH监测自适应指示信息，有利于节省终端设备的功耗。
在一个可能的设计中，所述LP-WUS用于唤醒所述终端设备，方法可以为：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。由此可以通过多种方式基于LP-WUS灵活地唤醒终端设备。
在一个可能的设计中，所述网络设备向所述终端设备发送所述LP-WUS后，所述网络设备在第五时长内有PDCCH发送需求时向所述终端设备发送所述PDCCH；所述网络设备确定若在所述第五时长内未向所述终端设备发送PDCCH时，所述网络设备有所述LP-WUS发送需求时向所述终端设备发送所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。这样可以基于第五时长降低终端设备监测LP-WUS的时延，另一方面也可以约束网络设备的调度时间，避免终端设备开启主电路监测PDCCH的时间较长，有利于终端设备的节能。
在一个可能的设计中，在所述网络设备在激活时间内有LP-WUS发送需求时，向所述终端设备发LP-WUS之前，所述网络设备向所述终端设备发送所述LP-WUS的配置信息。由此可以使得终端设备准确获得LP-WUS的相关配置。
在一个可能的设计中，所述LP-WUS采用开关键控OOK调制、频移键控FSK调制，或OOK与FSK结合的调制方式。从而可以降低终端设备的唤醒电路的功耗。
第五方面，本申请还提供了一种通信装置，所述通信装置可以是终端设备，该通信装置具有实现上述第一方面或第一方面的各个可能的设计示例中，或者第三方面或第三方面的各个可能的设计示例中的方法的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述通信装置的结构中包括收发单元和处理单元，这些单元可以执行上述第一方面或第一方面的各个可能的设计示例中，或者第三方面或第三方面的各个可能的设计示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一个可能的设计中，所述通信装置的结构中包括收发器和处理器，可选的还包括存储器，所述收发器用于收发信号，以及用于与通信系统中的其他设备进行通信交互，所述处理器被配置为支持所述通信装置执行上述第一方面或第一方面的各个可能的设计示例中，或者第三方面或第三方面的各个可能的设计示例中的相应的功能。所述存储器与所述处理器耦合，其保存所述通信装置必要的程序指令和数据。
第六方面，本申请还提供了一种通信装置，所述通信装置可以是网络设备，该通信装置具有实现上述第二方面或第二方面的各个可能的设计示例中，或者第四方面或第四方面的各个可能的设计示例中的方法的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述通信装置的结构中包括收发单元和处理单元，这些单元可以执行上述第 二方面或第二方面的各个可能的设计示例中，或者第四方面或第四方面的各个可能的设计示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一个可能的设计中，所述通信装置的结构中包括收发器和处理器，可选的还包括存储器，所述收发器用于收发信号，以及用于与通信系统中的其他设备进行通信交互，所述处理器被配置为支持所述通信装置执行上述第二方面或第二方面的各个可能的设计示例中，或者第四方面或第四方面的各个可能的设计示例中的相应的功能。所述存储器与所述处理器耦合，其保存所述通信装置必要的程序指令和数据。
第七方面，本申请实施例提供了一种通信系统，可以包括上述提及的终端设备和网络设备等。
第八方面，本申请实施例提供的一种计算机可读存储介质，该计算机可读存储介质存储有程序指令，当程序指令在计算机上运行时，使得计算机执行本申请实施例第一方面及其任一可能的设计中，或第二方面及其任一可能的设计中，或第三方面及其任一可能的设计中，或第四方面及其任一可能的设计中所述的方法。示例性的，计算机可读存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括非瞬态计算机可读介质、随机存取存储器(random-access memory，RAM)、只读存储器(read-only memory，ROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。
第九方面，本申请实施例提供一种计算机程序产品，包括计算机程序代码或指令的，当计算机程序代码或指令在计算机上运行时，使得上述第一方面或第一方面任一种可能的设计中，或者上述第二方面或第二方面任一种可能的设计中，或者上述第三方面或第三方面任一种可能的设计中，或者上述第四方面或第四方面任一种可能的设计中所述的方法被执行。
第十方面，本申请还提供了一种芯片，包括处理器，所述处理器与存储器耦合，用于读取并执行所述存储器中存储的程序指令，以使所述芯片实现上述第一方面或第一方面任一种可能的设计中，或者上述第二方面或第二方面任一种可能的设计中，或者上述第三方面或第三方面任一种可能的设计中，或者上述第四方面或第四方面任一种可能的设计中所述的方法。
上述第五方面至第十方面中的各个方面以及各个方面可能达到的技术效果请参照上述针对第一方面或第一方面中的各种可能方案，或者上述第二方面或第二方面中的各种可能方案，或第三方面及第三方面中的各种可能方案，或第四方面及第四方面中的各种可能方案可以达到的技术效果说明，这里不再重复赘述。
附图说明
图1为本申请提供的一种通信系统的架构示意图；
图2为本申请提供的一种终端设备通过唤醒电路接收唤醒信号的示意图；
图3为本申请提供的一种信号的波形示意图；
图4为本申请提供的一种信息为0101的FSK信号波形示意图；
图5为本申请提供的一种DRX周期的示意图；
图6为本申请提供的一种DCP指示含义的示意图；
图7为本申请提供的一种跳过PDCCH监测的示意图；
图8为本申请提供的一种搜索空间切换的示意图；
图9为本申请提供的一种通信方法的流程图；
图10为本申请提供的一种可能发送LP-WUS的时域位置的示意图；
图11为本申请提供的一种第一时延的示意图；
图12为本申请提供的一种终端设备监测PDCCH的示意图；
图13为本申请提供的另一种通信方法的流程图；
图14为本申请提供的一种通信装置的结构示意图；
图15为本申请提供的一种通信装置的结构图。
具体实施方式
下面将结合附图对本申请作进一步地详细描述。
本申请实施例提供一种通信方法及装置，提供监测LP-WUS的方案。其中，本申请所述方法和装置基于同一技术构思，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
在本申请中的描述中，“至少一个(种)”是指一个(种)或者多个(种)，多个(种)是指两个(种)或者两个(种)以上。“以下至少一项”或其类似表达，是指的这些项中的任意组合，包括单项或复数项的任意组合。例如，a,b,或c中的至少一项，可以表示：a，b，c，a和b，a和c，b和c，或，a和b和c，其中，a,b,c可以是单个，也可以是多个。
本申请的描述中“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。“/”表示“或”，例如a/b表示a或b。
为了更加清晰地描述本申请实施例的技术方案，下面结合附图，对本申请实施例提供的通信方法及装置进行详细说明。
图1示出了本申请实施例涉及的通信系统的架构，所述通信系统的架构中包括网络设备和终端设备。其中：
所述网络设备可以为具有无线收发功能的设备或可设置于该网络设备的芯片，该网络设备包括但不限于：基站(generation node B，gNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线保真(wireless fidelity，Wi-Fi)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令或PHCP层信令，也可以认为是由DU发送的，或者，由DU+RU发送的。可以理解的是，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网RAN中的网络设备，也可以将CU划分为核心网CN中的网络设备，对此不作限定。
所述终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智能穿戴设备(智能眼镜、智能手表、智能耳机等)、智慧家庭(smart home)中的无线终端等等，也可以是能够设置于以上设备的芯片或芯片模组(或芯片系统)等。本申请的实施例对应用场景不做限定。本申请中将具有无线收发功能的终端设备及可设置于前述终端设备的芯片统称为终端设备。
在本申请中，网络设备可以给终端设备发送唤醒信号，终端设备可以使用唤醒接收机(wakeup receiver)接收该唤醒信号。
需要说明的是，图1所示的通信系统可以但不限于为第四代(4th Generation，4G)系统、第五代(5th Generation，5G)系统，如新一代无线接入技术(new radio access technology，NR)。可选的，本申请实施例的方法还适用于未来的各种通信系统，例如第六代(6th Generation，6G)系统或者其他通信网络等。
需要说明的是，图1所示的通信系统中示出的设备的数量和类型仅为示例。在通信系统中还可以有更多设备，例如核心网设备等，在图1中不再示出。
为便于理解，下面先对本申请实施例涉及的一些技术用语进行解释：
1)唤醒链路
一般情况下，终端设备接收来自网络设备的任何下行信号时都是用相同的接收模块(或者接收机，或者接收电路)。在本申请中，为便于描述，将完成这些功能(或执行相关步骤)的模块称为主电路(或主接收机)。可以理解，主电路仅是为区分做的命名，其具体命名不对本申请的保护范围造成限定，例如不失一般性，主电路也可以描述为第二电路(或第二模块)。下文统一描述为主电路。
终端设备使用主电路接收信号可以被称为在主链路上传输，其中，主链路表征了终端设备和网络设备间的一种连接关系，是一个逻辑概念，而非一个物理实体。可以理解，主链路仅是为区分做的命名，其具体命名不对本申请的保护范围造成限定，例如不失一般性，主链路也可以描述为第二链路。
当终端设备采用主电路接收下行信号时，功耗较高。例如，终端设备在接收下行数据时，首先要使用主电路的接收模块接收下行信号，然后终端设备还要对物理下行控制信道(physical downlink control channel，PDCCH)进行盲检，对接收到的物理下行共享信道(physical downlink shared channel，PDSCH)进行解码等，这些都会带来较大的功耗。此外，由于主电路较为复杂，其运行时的基准功耗(或静态功耗)比较高。
为了降低终端设备接收下行信号的功耗，一种可能的方法是，终端设备可以使用一个单独的低功耗小电路接收唤醒信号(wake up signal，WUS)或称为低功耗唤醒信号(low power wake up signal，LP-WUS)。例如，唤醒信号用于指示寻呼相关的信息，该寻呼相关的信息例如可以包括：一个终端设备或者一组终端设备是否被寻呼。再例如，唤醒信号用于指示调度相关的信息，该调度相关的信息例如可以包括：是否需要监测物理下行控制信道(physical downlink control channel，PDCCH)。该低功耗小电路可以使用一个结构简单的单独的小电路或芯片实现，其功耗较低。
应理解，该低功耗小电路例如可以称为唤醒接收机(wake up receiver，WUR)，或者也可以称为唤醒电路，或者也可以称为低功耗电路或低功耗唤醒无线电路(low power wake up radio，LP-WUR)等等，关于其命名，本申请不予限制。在本申请中，为便于描述，将该低功耗小电路称为唤醒电路。可以理解，唤醒电路仅是为区分做的命名，其具体命名不对本申请的保护范围造成限定，例如不失一般性，唤醒电路也可以描述为第一电路(或第一模块)。下文为便于说明，统一描述为唤醒电路。
例如，图2示出了终端设备通过唤醒电路接收唤醒信号的示意图。
同样，终端设备使用唤醒电路接收信号可以被称为在唤醒链路上传输，其中，唤醒链路表征了终端设备和网络设备间的一种连接关系，是一个逻辑概念，而非一个物理实体。可以理解，唤醒链路仅是为区分做的命名，其具体命名不对本申请的保护范围造成限定，例如不失一般性，唤醒链路(或称为WUR链路)也可以描述为第一链路。终端设备在唤醒链路上接收的信号可以被称为唤醒信号，还应理解，唤醒信号仅是一种示例的命名，关于其命名，本申请不予限制。
在终端设备处于IDLE/INACTIVE态下，唤醒信号可以用来携带上述提及的寻呼相关的信息。在终端设备处于连接(CONNECTED)态下，唤醒信号可以用来携带上述调度相关的信息，例如唤醒信号用于指示终端设备是否需要开启主电路接收调度信息(如是否需要监测PDCCH)。
2)开关键控(on off keying，OOK)调制
为了降低唤醒电路的功耗，LP-WUS信号可以采用OOK调制，对应的唤醒电路可以采用包络检测的方法接收唤醒信号。当采用OOK调制时，每个(编码后)比特对应一个符号(symbol，也可以被称为一个码片(chip))。当比特为1时，该符号长度内有信号发出(即该符号长度内信号功率不为0)，为了方便，可以将其称为ON信号。而当比特为0时，该符号长度内无信号发出(即该符号长度内信号功率为0)，为了方便，可以将其称为OFF信号。如图3所示的波形，即代表1010四个比特。应理解，也可以反过来，即当比特为0时，该符号长度内有信号发出(即该符号长度内信号功率不为0)，而当比特为1时，该符号长度内无信号发出(即该符号长度内信号功率为0)，本申请对此不作限定。
5G NR系统采用OFDM调制，5G NR系统的网络设备可以发出正交频分复用(orthogonal frequency division multiplexing，OFDM)调制的信号。为了尽可能与5G NR系统兼容，上述OOK信号可以通过OFDM调制的发射机来实现。一种可能的情况下，一个OOK符号的长度可以与一个OFDM符号的长度相同，此时需要发出一个符号长度的ON信号的时候，发射机发送某种特定的信号，令该信号在符号 长度内的轮廓尽可能像方波。需要发出OFF信号的时候，发射机关闭一个符号长度的时间。另一种可能的情况下，可以通过OFDM发射机，在一个OFDM符号的长度内，发出多个OOK符号，以缩短OOK符号的长度，可以在相同时间内发送更多OOK符号，提高数据率。
3)移频键控(frequency shift keying，FSK)调制
LP-WUS也可以采用FSK调制。采用FSK调制的时候，不同信息使用不同频率资源。例如，2FSK可以携带1比特(bit)信息，当信息比特为0时，可以在频率资源f0上发送信息，频率资源f1上不发送信息；当信息比特为1时，可以在频率资源f1上发送信息，频率资源f0上不发送信息。假设f0<f1，信息为0101的FSK信号波形可以如下图4所示，在第一个符号和第三个符号内，信号的频率较低，在第二个符号和第四个符号内，信号的频率较高。接收端在解调信号的时候，可以对比f0和f1上的功率谁高谁低，来判断发送的信息是0还是1。
FSK还可以支持更高的调制阶次，以携带更多的信息。例如，4FSK可以携带2bit信息，当信息比特为00时，可以在频率资源f0上发送信息，频率资源f1、f2、f3上不发送信息；当信息比特为01时，可以在频率资源f1上发送信息，频率资源f0、f2、f3上不发送信息；当信息比特为10时，可以在频率资源f2上发送信息，频率资源f0、f1、f3上不发送信息；当信息比特为11时，可以在频率资源f3上发送信息，频率资源f0、f1、f2上不发送信息。同样的，接收端可以对比多个频率资源上的功率高低，来确定传输的信息是什么。
4)非连续接收(discontinuous reception，DRX)
DRX机制可以使终端设备周期性地在某些时间段进行休眠，从而节省终端设备的功耗。处于无线资源控制(radio resource control，RRC)连接态的终端设备使用的DRX为连接态非连续接收(connected discontinuous reception，C-DRX)。
例如，如图5所示，DRX周期(cycle)包括“持续时间(On Duration)”部分和“DRX机会(Opportunity for DRX)”部分。在“On Duration”时间内终端设备监听并接收物理下行控制信道(physical downlink control channel，PDCCH)；在“Opportunity for DRX”时间内终端设备可以有机会不监听或不接收PDCCH以减少功耗。
DRX机制包括持续定时器(onDurationTimer或drx-onDurationTimer)，在每个DRX周期的开始(即每个DRX周期的on Duration的开始)终端设备需要开启drx-onDurationTimer。当drx-onDurationTimer超时则表示“On Duration”时间结束，此时终端设备进入“Opportunity for DRX”时间。DRX机制中还包括去激活定时器(InactivityTimer或drx-InactivityTimer)。当终端设备每次接收到调度新传数据包的DCI后，会启动/重启drx-InactivityTimer。drx-OnDurationTimer和drx-InactivityTimer运行的时间都被称为激活时间(Active Time)。终端设备在Active Time内会监测PDCCH，接收信道状态信息参考信号(channel state information reference signal，CSI-RS)并做信道状态信息(channel state information，CSI)反馈，发送探测参考信号(sounding reference signal，SRS)。终端设备在Active Time外不会监测PDCCH，不做周期性CSI反馈(periodical CSI feedback)以及半持续性CSI反馈(semi-persistent CSI feedback)，不发送周期性SRS(periodical SRS)以及半持续性SRS(semi-persistent SRS)。C-DRX的周期大小(C-DRX cycle length)，drx-OnDurationTimer长度，以及drx-InactivityTimer的长度，都是由网络设备配置给终端设备的。
5)功耗节省无线网络临时标识加扰的下行控制信息(DCI with cyclic redundancy check scrambled by power saving radio network temporary identifier，DCP)
在NR Rel-16标准中，支持了DCI格式2_6(DCI format 2_6)，也被称为DCP(后面为了简化描述，都以DCP作为代称)。DCP可以处于一个C-DRX cycle的OnDuration的前面，用于指示与其关联的C-DRX cycle的OnDurationTimer是否需要启动。若DCP指示OnDurationTimer需要启动(DCP中与该终端设备关联的指示比特取值为1)，即终端设备需要在该DRX cycle的OnDuration中监测PDCCH(也可以说终端设备处于唤醒状态)，也意味着在该OnDuration中可能会有对于该终端设备的数据调度。如图6所示，图6中实线方框表示终端设备处于唤醒状态的OnDuration。若DCP指示OnDurationTimer不需要启动(DCP中与该终端设备关联的指示比特取值为0)，即终端设备需要在该DRX cycle中不监测PDCCH(也可以说终端设备处于睡眠状态)，也意味着在该OnDuration中不会有对于该终端设备的数据调度。如图6所示，图6中虚线方框表示终端设备处于睡眠状态的OnDuration。
其中，终端设备的物理层(physical，PHY)会解码DCP，并将DCP指示的信息(0或者1)告知 终端设备的媒体接入控制(media access control，MAC)层，以便控制OnDurationTimer是否启动。
6)跳过PDCCH(PDCCH skipping)和搜索空间组切换((search space set group，SSSG)switching))
PDCCH skipping的基本原理是：网络设备向终端设备发送一个指示信息，指示终端设备可以跳过一段时间的PDCCH监测，终端设备跳过一段时间的PDCCH监测可以等效描述为终端设备在一段时间内不监测PDCCH。如图7所示的跳过PDCCH监测的示意图，终端设备本来每个时隙(slot)都需要监测PDCCH，但是如果终端设备被网络设备指示一段时间不需要监测PDCCH，则终端设备可以在被指示的这段时间内不监测PDCCH。
SSSG switching的基本原理是：网络设备可以向终端设备发送一个指示信息，指示终端设备在预先配置的两组搜索空间中切换。如图8所示，终端设备被配置2个搜索空间，第一搜索空间对应的周期为1个时隙，第二搜索空间对应的周期为4个时隙。当网络设备向终端设备发送指示信息，指示终端设备可以从监测第一搜索空间切换为监测第二搜索空间后，终端设备可以从监测第一搜索空间切换为监测第二搜索空间。
在当前标准中，PDCCH skipping和SSSG switching的指示信息被携带在下行控制信息(downlink control information，DCI)的同一个域(也即同一个字段)中，这个域可以叫做PDCCH监测自适应(PDCCH monitoring adaptation)域或称为PDCCH监测自适应指示信息。携带该域的DCI格式(format)可以是调度物理上行共享信道(physical uplink shared channel，PUSCH)传输的DCI format 0_1或DCI format 0_2，也可以是调度物理下行共享信道(physical downlink shared channel，PDSCH)传输的DCI format 1_1或DCI format 1_2。
目前提出了在终端设备处于连接态下，可以通过LP-WUS来指示PDCCH的监测，通过监测LP-WUS实现终端设备的节能。但是目前并没有明确终端设备如何监测LP-WUS，例如没有明确如何激活或者去激活LP-WUS监测的相关流程(也即如何开始或停止监测LP-WUS)，又例如没有明确终端设备监测LP-WUS的具体行为。基于此，本申请实施例提供一种通信方法，用以提供终端设备监测LP-WUS的方案。
在以下的实施例中，以网络设备和终端设备为例对本申请实施例提供的通信方法进行详细说明，应理解网络设备执行的操作也可以通过网络设备中的处理器，或者是芯片或芯片系统，或者是一个功能模块等实现，终端设备执行的操作也可以通过终端设备中的处理器，或者是芯片或芯片系统，或者是一个功能模块等实现，对本申请对此不作限定。
基于以上描述，本申请实施例提供了一种通信方法，可以提供激活终端设备监测LP-WUS的相关流程的方案。如图9所示，该方法的流程可以包括：
步骤901：终端设备确定是否满足监测LP-WUS的条件；相应地，网络设备确定终端设备是否满足监测所述LP-WUS的条件。其中，所述LP-WUS用于唤醒所述终端设备。
其中，这里监测LP-WUS可以理解为开始监测LP-WSU。
这里唤醒终端设备可以表示终端设备开始监测PDCCH，所述PDCCH用于调度PDSCH或PUSCH的传输，或者所述PDCCH用于激活半持续性调度(semi-persistence scheduling，SPS)或配置授权(configured grant，CG)。可选的，PDSCH的传输可以是动态的PDSCH传输，也可以是半持续性的PDSCH传输。
在一种可选的实施方式中，所述LP-WUS可以通过如下方式唤醒所述终端设备：
方式a1、所述LP-WUS可以包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备。
例如，当所述终端设备处于连接态时，所述终端设备的标识可以为连接态网络临时标识(connected radio network temporary，C-RNTI)，也可以为与LP-WUS监测相关的专用RNTI，也可以是其他形式的标识，这里不予限制。
方式a2、所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关。
其中，所述第一时域位置与所述终端设备的标识相关可以理解为：所述第一时域位置与所述终端设备的完整标识相关；或者，也可以理解为：所述第一时域位置与所述终端设备的标识的部分信息相关，本申请对此不作限定。
可选的，当终端设备监测LP-WUS，不会在所有时域位置都监测，而是监测部分时域位置的时候，可以通过时域位置表征终端设备的标识的部分信息。例如，如图10所示，当所有可能发送LP-WUS的时域位置被分成N＝4份，每份时域位置都是周期性出现的，某个终端设备只需要监测其中一份时域位置，终端设备可以根据终端设备的标识对N取模，来确定自己需要监测其中哪一份时域位置。示例性的，此时如果所述终端设备的标识为C-RNTI包括16比特，那么在LP-WUS中可以只包括高位的14比特(即所述终端设备的标识的部分信息)，低位的2比特可以通过不同的时域位置区分。例如，所述终端设备的低位的2比特可以通过第一时域位置识别，从而可以基于LP-WUS中包括的高位的14比特和第一时域位置唤醒所述终端设备。
一种可能的情况中，当时域位置被分成更多份的情况下，有可能整个终端设备的标识都通过时域位置来区分。这种情况下，LP-WUS可以不包括终端设备的标识的部分信息。
方式a3、所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关。所述终端设备组包含所述终端设备。
其中，所述第二时域位置与所述终端设备组的标识相关可以理解为：所述第二时域位置与所述终端设备组的完整标识相关；或者，也可以理解为：所述第二时域位置与所述终端设备组的标识的部分信息相关，本申请对此不作限定。
例如，仍如图10所示，当所有可能发送LP-WUS的时域位置被分成N＝4份，每份时域位置都是周期性出现的，某个终端设备组只需要监测其中一份时域位置，终端设备组可以根据终端设备组的标识对N取模，来确定自己需要监测其中哪一份时域位置。示例性的，此时如果所述终端设备组的标识包括16比特，那么在LP-WUS中可以只包括高位的14比特(即所述终端设备组的标识的部分信息)，低位的2比特可以通过不同的时域位置区分。例如，所述终端设备组的低位的2比特可以通过第二时域位置识别，从而可以基于LP-WUS中包括的高位的14比特和第二时域位置唤醒所述终端设备组中的所述终端设备。
一种可能的情况中，当时域位置被分成更多份的情况下，有可能整个终端设备组的标识都通过时域位置来区分。这种情况下，LP-WUS可以不包括终端设备组的标识的部分信息。
方式a4、所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备。
方式a5、所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备，所述多个终端设备包括所述终端设备。
其中，所述终端设备与所述多个比特中的哪个比特对应，可以是预配置的。
在该方式a5中，LP-WUS可以指示多个终端设备的标识，具体可以通过多个比特指示多个终端设备的标识。可选的，可以通过位图(bitmap)的方式指示多个终端设备的标识。
例如，LP-WUS可以包括10比特的bitmap，比特取值为1表示被唤醒，0表示不被唤醒。假设所述终端设备与10比特中的第3个比特对应的时候，第三个比特若取值为1，则所述终端设备被唤醒，也即所述终端设备会停止监测LP-WUS，开始监测PDCCH。
可选的，所述多个终端设备可以属于一个终端设备组，相应地，通过多个比特唤醒一个终端设备组中对应的终端设备。
可选的，采用方法a5的方法，所述终端设备要先确定其所属于的终端设备组对应的LP-WUS。示例性的，所述终端设备可以结合上述方式a3或a4的方法，通过LP-WUS中包括的终端设备组的标识的部分信息或者终端设备组的标识来确定所述终端设备所属于的终端设备组对应的LP-WUS。也就是说，上述方式a3或a4，与方式a5结合可以唤醒一个终端设备组中的部分或者全部终端设备。
一种可能的方式中，所述LP-WUS由所述终端设备的第一电路接收，PDCCH由所述终端设备的第二电路接收，所述第一电路和所述第二电路不同，具体可以参见前述介绍中第一电路和第二电路的相关描述，此处不再详述。
步骤902：所述终端设备确定满足监测所述LP-WUS的条件，监测所述LP-WUS。
可以理解的是，所述终端设备在某一次确定满足监测LP-WUS的条件后可以监测LP-WUS。可选的，所述终端设备在该次确定满足监测LP-WUS的条件后监测LP-WUS时，可能在某一段时间多次判断满足监测所述LP-WUS的条件，在某一段时间多次判断满足监测所述LP-WUS的条件时，均可以监 测LP-WUS。
步骤903：所述网络设备确定所述终端设备满足监测所述LP-WUS的条件，并且有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
本申请中，所述网络设备有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS，可以理解为所述网络设备确定所述终端设备监测LP-WUS，或者可以理解为所述网络设备可以发送LP-WUS。其他类似描述可以有类似理解，后面不再一一说明。
可选的，所述终端设备在监测所述LP-WUS之前，所述终端设备从网络设备接收所述LP-WUS的配置信息。例如，所述LP-WUS的配置信息中可以包括以下一项或多项：所述LP-WUS的监测时频域位置、所述LP-WUS的格式、所述LP-WUS的调制方式或者所述LP-WUS携带的信息内容等。可选的，所述LP-WUS携带的信息内容可以为指示监测PDCCH等。
当然，上述所述LP-WUS的格式、所述LP-WUS的调制方式或者所述LP-WUS携带的信息内容等也可以是协议预定义的，本申请不作限定。
其中，所述LP-WUS可以采用OOK调制、或FSK调制、或OOK与FSK结合的调制方式。
示例性的，所述LP-WUS的配置信息可以由所述网络设备通过RRC消息发送给所述终端设备。终端设备可以通过所述主电路接收该RRC消息。
可选的，在所述终端设备接收到LP-WUS的配置信息后，所述终端设备不立即开始监测LP-WUS，而是终端设备确定满足监测LP-WUS的条件，所述终端设备开始监测LP-WUS。
在一种可选的实施方式中，所述终端设备可以通过如下方法确定满足监测所述LP-WUS的条件：
方法b1、所述终端设备从网络设备接收第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS。也即，所述第一信息激活LP-WUS监测。
例如，所述网络设备可以通过DCI或者媒体接入控制控制元素(media access control control element，MAC CE)等向所述终端设备发送所述第一信息。
方法b2、所述终端设备确定在第一时长内未从所述网络设备接收到调度信息。
可选的，所述第一时长可以基于定时器(timer)实现，即将该定时器的时长设置为第一时长，当该定时器超时后终端设备开始监测LP-WUS。
该定时器可以复用当前已有的定时器，也可以为新定义的专用于触发开始监测LP-WUS的定时器，本申请不作限定。例如，当所述终端设备配置了C-DRX时，该定时器可以复用drx-InactivityTimer，即drx-InactivityTimer超时后终端设备开始监测LP-WUS。
可选的，在上述方法b1或b2的基础上，所述终端设备还可以进一步地基于如下方法b3确定满足监测所述LP-WUS的条件：
方法b3、所述终端设备确定第一信道质量参数大于或者等于第一阈值，所述第一信道质量参数为如下至少一种：参考信号接收功率(reference signal received power，RSRP)、参考信号接收质量(reference signal received quality，RSRQ)、LP-WUS的检测概率或低功耗同步信号(low-power synchronization signal，LP-SS)检测概率。
可选的，所述第一信道质量参数可以对应于主链路，也即所述网络设备与所述终端设备的主电路之间的链路。
示例性的，所述终端设备可以向所述网络设备发送第一信道反馈信息，所述第一信道反馈信息用于指示所述第一信道质量参数大于或者等于所述第一阈值。以使所述网络设备确定所述终端设备满足监测所述LP-WUS的条件。
相应地，所述网络设备确定所述终端设备满足监测所述LP-WUS的条件，才可以向所述终端设备发送LP-WUS，以保持与所述终端设备监测LP-WUS对齐。
其中，所述网络设备可以通过如下方法确定所述终端设备满足监测所述LP-WUS的条件：
方法c1、所述网络设备向所述终端设备发送所述第一信息。
方法c2、所述网络设备确定在所述第一时长内未向所述终端设备发送调度信息。
可选的，与终端设备同理，在上述方法c1或c2的基础上，所述网络设备还可以进一步地基于如下方法c3确定满足监测所述LP-WUS的条件：
方法c3、所述网络设备从所述终端设备接收上述第一信道反馈信息。
应理解，上述方法b1和上述方法c1对应，上述方法b2和上述方法c2对应，上述方法b3和上述 方法c3对应。例如，终端设备通过上述方法b1确定满足监测所述LP-WUS的条件时，所述网络设备相应地通过上述方法c1确定终端设备满足监测LP-WUS的条件。又例如，终端设备通过上述方法b2和方法b3共同确定满足监测LP-WUS的条件时，所述网络设备相应地通过上述方法c2和方法c3共同确定所述终端设备满足监测所述LP-WUS的条件。
在一种可选的实施方式中，所述终端设备在所述第一时刻开始监测所述LP-WUS。相应地，所述网络设备在所述第一时刻开始，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
可选的，所述第一时刻与第二时刻相关，所述第二时刻为所述终端设备接收到所述第一信息的时刻，可以理解为所述第二时刻为所述网络设备发送所述第一信息的时刻；或者，所述第二时刻可以为所述第一时长的结束时刻。
其中，所述第一信息可以包含在一个信号里(如上述提及的DCI或MAC CE)，基于此，所述终端设备接收到所述第一信息的时刻或者所述网络设备发送所述第一信息的时刻，可以理解为包含所述第一信息的信号传输的结束时刻，也可以描述为包含所述第一信息的信号传输完成的时刻。
一种示例中，所述第一时刻可以是第二时刻加上第一时延的时刻，该第一时延可以理解为监测LP-WUS的生效时延(application delay)。
该第一时延可以包含开启唤醒电路的时间(例如可以是1毫秒(ms)到10ms之间)。可选的，若所述第一信息激活终端设备监测LP-WUS，则该第一时延还可以包含所述终端设备的主电路对第一信息的解码时间，也可以理解为包含所述终端设备的主电路对包含所述第一信息的信号的解码时间，本申请不作限定。
可选的，在所述第一时延内，所述终端设备可以继续监测PDCCH，或者，所述终端设备也可以什么都不监测(例如终端设备既不监测PDCCH也不监测LP-WUS，终端设备还可以不接收其他信号如CSI-RS)。在所述终端设备什么都不监测时，所述第一时延可以称为中断(interruption)时间。
例如，图11示出了第一时延的一种示例的示意图。
其中，所述第一时延的取值可以是协议预定义的，也可以是终端设备上报给网络设备的，也可以是终端设备和网络设备协商的，或者还可以是网络设备配置给终端设备的，本申请不作限定。
另一种示例中，所述第一时刻可以是所述第二时刻的下一个时间单元的起始时刻等。可选的，所述时间单元可以是时隙或符号等。
通过上述方法，可以确定终端设备何时开始监测WUS，同时网络设备知晓何时可以向终端设备发送WUS。
在一种可选的实施方式中，所述终端设备监测所述LP-WUS时，所述终端设备确定是否满足监测PDCCH的条件，确定满足监测所述PDCCH的条件，监测所述PDCCH。相应地，所述网络设备在确定所述终端设备满足监测所述LP-WUS的条件后，确定所述终端设备是否满足监测PDCCH的条件，确定所述终端设备满足监测所述PDCCH的条件，并且有PDCCH发送需求时，向所述终端设备发送所述PDCCH。
本申请中，所述网络设备有PDCCH发送需求时，向所述终端设备发送所述PDCCH，可以理解为所述网络设备确定所述终端设备监测PDCCH，或者可以理解为所述网络设备可以发送PDCCH。其他类似描述可以有类似理解，后面不再一一说明。
所述终端设备可以通过确定满足第一条件和/或第二条件，来确定满足监测所述PDCCH的条件。其中，所述第一条件可以包括如下条件：
条件d1、所述终端设备从网络设备监测到所述LP-WUS。
由于LP-WUS可以指示是否监测PDCCH，因此，所述终端设备在监测到所述LP-WUS后可以确定可以开始监测PDCCH。
可选的，所述LP-WUS可以指示所述终端设备停止监测LP-WUS，也即指示所述终端设备监测PDCCH。例如，所述LP-WUS指示所述终端设备停止监测LP-WUS时，方法可以与所述LP-WUS唤醒所述终端设备的方法类似，具体可以参见上述相关描述，此处不再详细描述。
条件d2、所述终端设备发送上行业务信息。
示例性的，所述上行业务信息可以是调度请求(scheduling request)或者配置授权PUSCH(configured grant PUSCH)等。
例如，终端设备通过SR请求网络设备发送上行调度。终端设备发送SR后，会监测PDCCH以确 定是否有来自网络设备的上行调度，因此，终端设备发完SR后可以开始监测PDCCH。
又例如，当网络设备为终端设备配置了CG-PUSCH资源后，终端设备可以在有上行业务时，直接使用预配置好的CG-PUSCH资源发送上行数据，不需要等待网络设备的调度。终端设备发送CG-PUSCH后，若网络设备未能正确接收该CG-PUSCH，网络设备可能发送DCI调度该CG-PUSCH的重传，因此终端设备发完CG-PUSCH后可以开始监测PDCCH。
条件d3、所述终端设备在第二时长内未监测到所述LP-WUS。
可选的，所述第二时长可以包含在LP-WUS的配置信息中，也可以包含在所述第一信息中，本申请不作限定。由于LP-WUS采用较为简单的调制方式，终端设备接收LP-WUS的唤醒电路功耗较低，因此LP-WUS的覆盖性能可能较差。当终端设备在第二时长内未监测到所述LP-WUS时，可能终端设备的第一电路和网络设备之间的第一链路的链路质量已经较差。为了避免该第一链路的链路质量较差的情况下，终端设备长时间无效监测LP-WUS，可以通过第二时长来避免该问题。
所述第二条件可以包括：
条件d4、所述终端设备确定第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：RSRP、RSRQ、LP-WUS的检测概率或LP-SS检测概率。
可选的，所述第二信道质量参数可以对应主链路(也即所述网络设备与所述终端设备的主电路之间的链路)，也可以对应WUR链路(即网络设备和终端设备的唤醒电路之间的链路)。
其中，终端设备可以通过如下可能的方法确定所述第二信道质量参数：一种可能方法是所述终端设备通过唤醒电路测量第二信道质量参数，这种情况下，需要网络设备发送唤醒电路可以接收的参考信号(可以是新定义的参考信号，比如可以称为LP-RS)，从而完成第二信道质量参数的测量。另一种可能方法是所述终端设备通过主电路测量第二信道质量参数，这种情况下，需要终端设备不定时地(例如周期性地)打开主电路接收参考信号(如同步信号和物理广播信道块(synchronization signal and physical broadcast channel block，SSB)或信道状态信息参考信号(channel state information reference signal，CSI-RS))，从而完成第二信道质量参数的测量。
可选的，所述终端设备可以向所述网络设备发送第二信道反馈信息，所述第二信道反馈信息用于指示所述第二信道质量参数小于或者等于所述第二阈值。以使所述网络设备确定所述终端设备满足监测所述PDCCH的条件。
可以理解的是，上述条件d1、d2或d3中的任一个条件可以与条件d4同时存在，或者，条件d1、d2、d3或d4也可以均单独存在。
相应地，所述网络设备可以通过确定满足第一条件和/或第二条件，来确定所述终端设备满足监测所述PDCCH的条件。其中，所述第一条件可以包括如下条件：
条件e1、所述网络设备有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
条件e2、所述网络设备接收上行业务信息。
条件e3、所述网络设备在第二时长内未发送所述LP-WUS。
所述第二条件可以包括：
条件e4、所述网络设备从所述终端设备接收上述第二信道反馈信息。
应理解，上述方法d1和上述方法e1对应，上述方法d2和上述方法e2对应，上述方法d3和上述方法e3对应，上述方法d4和上述方法e4对应。例如，终端设备通过上述方法d1确定满足监测所述PDCCH的条件时，所述网络设备相应地通过上述方法e1确定终端设备满足监测PDCCH的条件。又例如，终端设备通过上述方法d2和方法d3共同确定满足监测PDCCH的条件时，所述网络设备相应地通过上述方法e2和方法e3共同确定所述终端设备满足监测所述PDCCH的条件。
一种可能的实施方式中，所述终端设备停止监测LP-WUS的时间可能早于开始监测PDCCH的时间，也可能晚于开始监测PDCCH的时间，或者也可能开始监测PDCCH的同时停止监测LP-WUS，本申请不作限定。
一种可能的实施方式中，所述终端设备在监测PDCCH时也不会停止监测LP-WUS。
一种可选的方式中，所述终端设备可以在第三时刻开始监测所述PDCCH。相应地，所述网络设备可以在第三时刻开始，并且有所述PDCCH发送需求时，向所述终端设备发送所述PDCCH。
其中，所述第三时刻与第四时刻相关，所述第四时刻可以为所述终端设备监测到所述LP-WUS的时刻，或者所述上行业务信息传输完成的时刻，或者所述第二时长的结束时刻。
需要说明的是，由于LP-WUS本身具备一定长度，因此在本申请中监测到所述LP-WUS的时刻可以理解为所述LP-WUS传输完成的时刻，也可以称为LP-WUS的结束时刻。
一种可能的情况中，所述第三时刻和所述第四时刻可以为同一个时刻，也即可以理解为所述第三时刻和所述第四时刻为同一个概念；或者，所述第三时刻和所述第四时刻为两个不同的时刻概念，但所述第三时刻和所述第四时刻的取值可以相同。
又一种可能的情况中，所述第三时刻可以是所述第四时刻加上第二时延的时刻，该第二时延可以理解为监测PDCCH的生效时延。
例如，在连接态下，终端设备使用唤醒电路监测LP-WUS时，为了降低功耗，主电路应当处于某种睡眠状态。若假设主电路处于深度睡眠(deep sleep)状态，第二时延可以为20ms或者所述第二时延可以在10ms～20ms之间，或者第二时延也可以为其他取值，本申请不作限定。
其中，所述第二时延的取值可以是协议预定义的，也可以是终端设备上报给网络设备的，也可以是终端设备和网络设备协商的，或者还可以是网络设备配置给终端设备的，本申请不作限定。
可选的，在所述第二时延内，所述终端设备可以继续监测LP-WUS，或者，所述终端设备也可以什么都不监测(例如终端设备既不监测PDCCH也不监测LP-WUS，终端设备还可以不接收其他信号如LP-SS)。在所述终端设备什么都不监测时，所述第一时延可以称为中断(interruption)时间。
另一种可能的情况中，所述第三时刻可以是所述第四时刻的下一个时间单元的起始时刻等。可选的，所述时间单元可以是时隙或符号等。
例如，在第四时刻为所述上行业务信息传输完成的时刻的情况下，终端设备发送了SR或CG-PUSCH，表示终端设备已经开始使用主电路工作，此时可能不需要再有一个开启主电路的过程。因此，可以定义终端设备从发完SR或CG-PUSCH的下一个时隙或符号开始监测PDCCH。
另一种可选的方式中，为了进一步保证网络设备与终端设备的状态对齐，所述终端设备可以在所述第三时刻之后向所述网络设备发送反馈信息，所述反馈信息用于指示所述终端设备不监测所述LP-WUS或者所述终端设备开始监测所述PDCCH，终端设备在发送了该反馈信息后开始监测PDCCH。相应地，网络设备在接收到所述反馈信息后，有PDCCH发送需求时，向所述终端设备发送所述PDCCH。例如，图12示出了终端设备监测PDCCH的一种示意图。需要说明的是，图12仅示例性示出了第三时刻为第四时刻加上第二时延的时刻，这里仅为示例，其他情况不再一一示出。可以理解的是，当图12中反馈信息不存在的时候为终端设备在第三时刻开始监测所述PDCCH的示意图，这里不再单独示出。
可选的，所述终端设备向所述网络设备发送所述反馈信息的具体时间可以是预定义的。所述终端设备发送所述反馈信息的资源可以是网络设备配置的，或者也可以是LP-WUS指示的。
可选的，该反馈信息可以通过周期性PUCCH资源发送。反馈信息采用的PUCCH资源的时域位置可以根据第二时延确定。例如，可以在第二时延后最近的一个周期性PUCCH资源上发送；或者LP-WUS指示终端设备开始监测PDCCH时，同时指示需要使用的PUCCH资源。
通过上述方法，可以确定终端设备何时开始监测PDCCH，同时网络设备知晓何时可以向终端设备发送PDCCH。
在一种可选的实施方式中，在所述终端设备被配置了C-DRX的情况下，所述终端设备在激活时间(Active Time)内监测LP-WUS时，不监测PDCCH(以及不做周期性/半持续性的CSI测量/反馈，不发送周期性/半持续性的SRS)。
相应地，所述网络设备确定终端设备在监测LP-WUS的情况下，在所述激活时间内，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH。
可以理解为，终端设备在监测LP-WUS时，C-DRX的各个定时器(timer)都可以正常运转，对激活时间的定义不做更改，但是终端设备监测LP-WUS的优先级高于其他传统(legacy行为)。
示例性的，所述激活时间可以包括如下至少一项：DRX ON时段定时器(即drx-onDurationTimer)或DRX不活动定时器(也称DRX去激活定时器，即drx-InactivityTimer)或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制(media access control，MAC)实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。
在另一种可选的实施中，所述终端设备被配置连接态非连续接收C-DRX时，所述终端设备可以在激活时间内或者所述激活时间外监测所述LP-WUS。相应地，所述网络设备在激活时间内或所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。这样可以实现终端设备的节能。
若所述终端设备在所述激活时间内监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH。相应地，若所述网络设备在激活时间内发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第三时长后，有PDCCH发送需求时向所述终端设备发送PDCCH。
或者，若所述终端设备在所述激活时间外监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH。相应地，若所述网络设备在所述激活时间外发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第四时长后，有所述PDCCH发送需求时向所述终端设备发送所述PDCCH。
其中，所述第三时长和所述第四时长相同或不同。
一种可能的情况下，从最大化节能收益的角度来说，终端设备在不确定LP-WUS何时到达的情况下，终端设备监测LP-WUS时，终端设备的主电路可能维持在深度睡眠状态以节能。网络设备不知道终端设备处于哪种睡眠状态下，也只能以终端设备处于深度睡眠状态来假设，此时可能造成最大的时延(latency)来假设，第三时长和第四时长相等，可以为20ms或者为10ms～20ms之间的一个值，或者也可以为其他值，本申请不作限定。
另一种可能的情况下，为了降低时延，终端设备可以在激活时间内外处于不同睡眠状态，例如激活时间内终端设备处于微睡眠(micro-sleep)状态，激活时间外终端设备处于深度睡眠状态，以降低功耗收益换取更短的平均时延。基于此，可以预定义激活时间外对应的第四时长大于激活时间内对应的第三时长，也可以理解为激活时间外的监测PDCCH的时延大于激活时间内的监测PDCCH的时延。
需要说明的是，无论终端设备在激活时间内还是激活时间外监测到WUS后，监测PDCCH时，终端设备可以停止监测LP-WUS，监测PDCCH，或者终端设备也可以同时监测LP-WUS和PDCCH，本申请不作限定。
为了尽可能降低时延，终端设备应当收到LP-WUS后尽快开始监测PDCCH。但是按照目前的协议，终端设备只在激活时间内才能监测PDCCH。如果终端设备是在激活时间外接收到的LP-WUS，即使终端设备可以开始使用主电路监听PDCCH，按照现有标准的定义，网络设备也不会立刻给终端设备发送PDCCH，而是要等到激活时间(如最近的下一个OnDuration)才可以发送PDCCH。
基于此，可选的，所述终端设备在监测所述LP-WUS后，可以停止监测所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。相应地，所述网络设备向所述终端设备发送所述LP-WUS后，不再向所述终端设备发送其他LP-WUS并启动第一定时器。
进一步地，所述终端设备在所述激活时间内的所述第一定时器运行的时间内开始监测PDCCH。当终端设备不再监测LP-WUS时，终端设备会在激活时间内监测PDCCH。因此当把第一定时器运行的时间也定义为激活时间时，终端设备在第一定时器运行的时间内就会监测PDCCH。相应地，所述网络设备确定在所述激活时间内的所述第一定时器运行的时间内开始有PDCCH发送需求时，向所述终端设备发送PDCCH。
其中，所述第一定时器可以是drx-InactivityTimer。或者，所述第一定时器也可以是新增的定时器(new timer)，本申请不作限定。
一种可选的实施方式中，如果终端设备对时延的要求较低，所述终端设备监测到所述LP-WUS后，可以停止监测所述LP-WUS并在距离监测到所述LP-WUS的时刻最近的所述激活时间(例如下一个OnDuration)开始监测PDCCH。相应地，所述网络设备向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并在距离所述网络设备发送所述LP-WUS的时刻最近的所述激活时间开始，有PDCCH发送需求时，向所述终端设备发送PDCCH。
在一种可选的实施方式中，在所述终端设备被配置DCP的情况下，所述终端设备在监测所述LP-WUS时，不监测所述DCP。相应地，所述网络设备确定有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送所述DCP。
也就是说，终端设备监测LP-WUS的优先级高于监测DCP。这是因为LP-WUS和DCP的功能都 是用于指示是否监测PDCCH，功能较为重叠，因此终端设备只需要监测其中一种即可，从降低终端设备功耗的角度，监测LP-WUS比监测DCP的功耗更低。
可选的，若所述终端设备在监测所述LP-WUS时未在所述DCP的监测时机监测到所述DCP，所述终端设备确定不启动DRX ON时段定时器。也可以理解为，终端设备由于监测LP-WUS而没有监测DCP时，终端设备不醒来。相应地，若所述网络设备未在所述DCP的发送时机发送所述DCP，所述网络设备确定DRX ON时段定时器不启动。
所述终端设备可以通过如下方法确定不启动所述DRX ON时段定时器：
方法f1、所述终端设备的物理层向所述终端设备的媒体接入控制层发送第一指示信息，所述第一指示信息用于指示所述DCP的解码结果为0；所述终端设备的媒体接入控制层根据所述第一指示信息确定不启动所述DRX ON时段定时器。
该方法f1中，终端设备的媒体接入控制层不感知LP-WUS的监测(即媒体接入控制层不知道终端设备是否在监测LP-WUS)时，终端设备的物理层向媒体接入控制层上报DCP对应的解码结果是0，以让媒体接入控制层控制DRX ON时段定时器不启动。
基于该方法f1，可以使得终端设备仅物理层感知，简化终端设备内部协议栈结构。
方法f2、所述终端设备的媒体接入控制层根据所述终端设备在监测所述LP-WUS，确定不启动所述DRX ON时段定时器。
该方法f2中，终端设备的媒体接入控制层感知LP-WUS的监测(即媒体接入控制层知道终端设备是否在监测LP-WUS)时，物理层向媒体接入控制层上报DCP对应的解码结果是0；或者，物理层不向媒体接入控制层上报DCP对应的解码结果，且媒体接入控制层自己确定由于在监测LP-WUS，因此不启动DRX ON时段定时器。
基于该方法f1，媒体接入控制层可以获取更多信息，知晓LP-WUS相关信息，有助于实现媒体接入控制层对PDCCH监测的全局控制。
在一种可选的实施方式中，所述终端设备在监测所述LP-WUS时，不监测PDCCH监测自适应指示信息(PDCCH monitoring adaptation field)，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。相应地，所述网络设备有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH监测自适应指示信息。
也就是说，终端设备监测LP-WUS的优先级高于监测PDCCH监测自适应指示信息的优先级。
在一种可选的实施方式中，所述终端设备监测到所述LP-WUS后，在第五时长内监测PDCCH；若在所述第五时长内未接收到所述网络设备的PDCCH时，所述终端设备开始监测所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
相应地，所述网络设备向所述终端设备发送所述LP-WUS后，所述网络设备在第五时长内有PDCCH发送需求时向所述终端设备发送PDCCH；所述网络设备确定若在所述第五时长内未向所述终端设备发送PDCCH时，所述网络设备有所述LP-WUS发送需求时可以向所述终端设备发送所述LP-WUS。
例如，终端设备在监测LP-WUS时，收到与自己关联的LP-WUS且LP-WUS指示了第五时长，则终端设备停止监测LP-WUS并开始监测PDCCH，终端设备在第五时长内未收到调度，则停止监测PDCCH开始监测LP-WUS。
可选的，所述第五时长可以通过定时器实现。定时器的运行时间取值可以是预配置的，也可以是预定义的，也可以是LP-WUS指示的，本申请不作限定。
上述方法可以理解为网络设备发送LP-WUS的时候可以做某种程度的预测，网络设备指示终端设备开启主电路监测PDCCH并不一定是业务到达后才指示的，而是提前指示的，这样可以降低时延。另一方面，也可以理解为对网络设备调度的一些约束，在网络设备向终端设备发送LP-WUS触发终端设备开启主电路监测PDCCH后，网络设备必须在一定时间内(即第五时长内)开始调度，避免终端设备开启主电路监测PDCCH时间太长，这样有利于终端设备节能和降低时延。
需要说明的是，本申请中终端设备在监测LP-WUS时，可以连续监测LP-WUS，也可以非连续监测LP-WUS，例如终端设备可以在部分时域位置监测LP-WUS。
基于上述通信方法，可以提供一种终端设备监测LP-WUS的方案。
基于以上描述，本申请实施例还提供了一种通信方法，可以确定在终端设备配置了DRX时，终端设备监测LP-WUS的具体行为。如图13所示，该方法的流程可以包括：
步骤1301：终端设备被网络设备配置C-DRX。相应地，网络设备为终端设备配置C-DRX。
步骤1302：所述终端设备在激活时间内监测LP-WUS，所述LP-WUS用于唤醒所述终端设备。
所述LP-WUS用于唤醒所述终端设备的具体实现方法，可以参见图9所示的实施例中的相关描述，此处不再赘述。
步骤1303：所述终端设备在所述激活时间内去激活监测PDCCH。
也即所述终端设备不监测PDCCH。
步骤1304：所述网络设备在激活时间内有LP-WUS发送需求时，向所述终端设备发LP-WUS。
其中，所述激活时间的具体描述可以参见上述图9所示的实施例涉及的相关描述，此处不再赘述。
在一种可选的实施方式中，若所述终端设备在所述激活时间内监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH。相应地，若所述网络设备在所述激活时间内发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第三时长后所述终端设备监测PDCCH。
在另一种可选的实施方式中，所述终端设备可以在所述激活时间外监测所述LP-WUS；若所述终端设备在所述激活时间外监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH。相应地，所述网络设备在所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；若所述网络设备在所述激活时间外发送所述LP-WUS后，所述网络设备确定在发送所述LP-WUS的时刻起的第四时长后所述终端设备监测所述PDCCH。
其中，所述第三时长和所述第四时长相同或不同。
具体的上述激活时间内或激活时间外终端设备监测LP-WUS的具体方案可以参见上述图9所示的实施例涉及的相关描述，此处不再赘述。
进一步地，当终端设备监测到LP-WUS后，如何开始监测PDCCH的方法可以参见上述图9所示的实施例涉及的相关描述，此处不再赘述。
在一种可选的实施方式中，终端设备可以被配置了DCP，具体的，在终端设备被配置的DCP的情况下，终端设备或网络设备的具体行为可以参见图9所示的实施例涉及的相关描述，此处不再赘述。
又一种可选的实施方式中，终端设备可以被配置PDCCH监测自适应指示信息，具体的，在终端设备被配置的监测自适应指示信息的情况下，终端设备或网络设备的具体行为可以参见图9所示的实施例涉及的相关描述，此处不再赘述。
可选的，所述终端设备监测到所述LP-WUS后，可以在第五时长内监测PDCCH。相应地，所述网络设备向所述终端设备发送所述LP-WUS后，所述网络设备在第五时长内有PDCCH发送需求时向所述终端设备发送所述PDCCH。具体描述可以参见图9所示的实施例涉及的相关描述，此处不再赘述。
此外，关于LP-WUS的调制方式，或者LP-WUS的配置信息，以及LP-WUS与PDCCH的接收方式均可以参见图9所示的实施例涉及的相关描述，此处不再详细描述。
基于上述通信方法，可以确定在终端设备配置了DRX时，终端设备监测LP-WUS的具体行为。
基于以上实施例，本申请实施例还提供了一种通信装置，参阅图14所示，通信装置1400可以包括收发单元1401和处理单元1402。其中，所述收发单元1401用于所述通信装置1400接收信息(信号、消息或数据)或发送信息(信号、消息或数据)，所述处理单元1402用于对所述通信装置1400的动作进行控制管理。所述处理单元1402还可以控制所述收发单元1401执行的步骤。
示例性地，该通信装置1400具体可以是上述实施例中的终端设备、所述终端设备中的处理器，或者芯片，或者芯片系统，或者是一个功能模块等；或者，该通信装置1400具体可以是上述实施例中的网络设备、所述网络设备的处理器，或者芯片，或者芯片系统，或者是一个功能模块等。
在一个实施例中，所述通信装置1400用于实现上述图9所示的实施例中终端设备的功能时，具体可以包括：所述处理单元1402可以用于确定是否满足监测低功耗唤醒信号LP-WUS的条件；其中，所述LP-WUS用于唤醒所述终端设备；以及，确定满足监测所述LP-WUS的条件，监测所述LP-WUS。所述收发单元1401用于所述终端设备收发LP-WUS等信号。
一种方式中，所述处理单元1402在确定满足监测所述LP-WUS的条件时，可以用于：控制所述收发单元1401从网络设备接收第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS；或者，确定在第一时长内未从所述网络设备接收到调度信息。
可选的，所述处理单元1402在确定满足监测所述LP-WUS的条件时，还可以用于：确定第一信道 质量参数大于或者等于第一阈值，所述第一信道质量参数为如下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ、LP-WUS的检测概率或低功耗同步信号LP-SS检测概率。
一种可能的实施中，所述处理单元1402在监测所述LP-WUS时，可以用于：在第一时刻开始监测所述LP-WUS。
示例性的，所述第一时刻与第二时刻相关，所述第二时刻为所述收发单元1401接收到所述第一信息的时刻，或者为所述第一时长的结束时刻。
在一种可选的实施方式中，所述处理单元1402在监测所述LP-WUS时，还用于：确定是否满足监测物理下行控制信道PDCCH的条件；确定满足监测所述PDCCH的条件，监测所述PDCCH。
可选的，所述处理单元1402在确定满足监测所述PDCCH的条件时，可以用于：满足第一条件和/或第二条件；其中，所述第一条件包括：控制所述收发单元1401从网络设备监测到所述LP-WUS；或者，控制所述收发单元1401发送上行业务信息；或者，在第二时长内未监测到所述LP-WUS；所述第二条件包括：确定第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ、LP-WUS的检测概率或低功耗同步信号LP-SS检测概率。
一种方式中，所述处理单元1402在监测所述PDCCH时，可以用于：在第三时刻开始监测所述PDCCH。
可选的，所述收发单元1401还可以用于：在所述处理单元1402监测所述PDCCH之前，在第三时刻之后向所述网络设备发送反馈信息，所述反馈信息用于指示所述终端设备不监测所述LP-WUS或者所述终端设备开始监测所述PDCCH。
示例性的，所述第三时刻与第四时刻相关，所述第四时刻为所述终端设备监测到所述LP-WUS的时刻，或者所述上行业务信息传输完成的时刻，或者所述第二时长的结束时刻。
一种可选的实施方式中，所述终端设备被配置连接态非连续接收C-DRX；所述处理单元1402还用于：在激活时间内监测所述LP-WUS时，不监测PDCCH。
另一种可选的实施方式中，所述终端设备被配置连接态非连续接收C-DRX；处理单元1402在：在激活时间内或者所述激活时间外监测所述LP-WUS；若在所述激活时间内监测到所述LP-WUS后，在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH；或者，若在所述激活时间外监测到所述LP-WUS后，在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。
一种示例中，所述激活时间包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。
一种可能的方式，所述处理单元1402还可以用于：监测到所述LP-WUS后，停止监测所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。
一种可选的实施方式中，所述处理单元1402还可以用于：在所述激活时间内的所述第一定时器运行的时间内开始监测PDCCH。
另一种可选的实施方式中，所述处理单元1402还可以用于：监测到所述LP-WUS后，停止监测所述LP-WUS并在距离监测到所述LP-WUS的时刻最近的所述激活时间开始监测PDCCH。
一种可能的方式中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述处理单元1402还可以用于：在监测所述LP-WUS时，不监测所述DCP。
进一步地，所述处理单元1402还可以用于：若在监测所述LP-WUS时未在所述DCP的监测时机监测到所述DCP，确定不启动DRX ON时段定时器。
示例性的，所述处理单元1402在确定不启动所述DRX ON时段定时器时，可以用于：控制物理层向媒体接入控制层发送第一指示信息，所述第一指示信息用于指示所述DCP的解码结果为0；媒体接入控制层根据所述第一指示信息确定不启动所述DRX ON时段定时器；或者，媒体接入控制层根据在监测所述LP-WUS，确定不启动所述DRX ON时段定时器。
又一种可能的方式中，所述处理单元1402还用于：在监测所述LP-WUS时，不监测PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。
一种示例中，所述LP-WUS用于唤醒所述终端设备，包括：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。
可选的，所述处理单元1402还用于监测到所述LP-WUS后，在第五时长内监测PDCCH；若在所述第五时长内未接收到所述网络设备的PDCCH时，开始监测所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
可选的，所述收发单元1401还用于：在所述处理单元1402监测所述LP-WUS之前，从所述网络设备接收所述LP-WUS的配置信息。
示例性的，所述LP-WUS采用开关键控OOK调制或频移键控FSK调制。
可选的，所述LP-WUS由所述终端设备的第一电路接收，PDCCH由所述终端设备的第二电路接收，所述第一电路和所述第二电路不同。
在另一个实施例中，所述通信装置1400用于实现上述图9所示的实施例中网络设备的功能时，具体可以包括：所述处理单元1402用于确定终端设备是否满足监测低功耗唤醒信号LP-WUS的条件；其中，所述LP-WUS用于唤醒所述终端设备；所述收发单元1401用于所述处理单元1402确定所述终端设备满足监测所述LP-WUS的条件，并且有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
在一种可选的实施方式中，所述处理单元1402在确定所述终端设备满足监测所述LP-WUS的条件时，用于：控制所述收发单元1401向所述终端设备发送第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS；或者，确定所述收发单元1401在第一时长内未向所述终端设备发送调度信息。
可选的，所述处理单元1402在确定所述终端设备满足监测所述LP-WUS的条件时，还用于：控制所述收发单元1401从所述终端设备接收第一信道反馈信息，所述第一信道反馈信息用于指示第一信道质量参数大于或者等于第一阈值，所述第一信道质量参数为如下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ、LP-WUS的检测概率或低功耗同步信号LP-SS检测概率。
一种可能的方式中，所述收发单元1401在有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，用于：在第一时刻开始，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
示例性的，所述第一时刻与所述第二时刻相关，所述第二时刻为所述网络设备发送所述第一信息的时刻，或者为所述第一时长的结束时刻。
在一种可选的实施方式中，所述处理单元1402在确定所述终端设备满足监测所述LP-WUS的条件后，还用于：确定所述终端设备是否满足监测下行控制信道PDCCH的条件；确定所述终端设备满足监测所述PDCCH的条件，并且有PDCCH发送需求时，控制所述收发单元1401向所述终端设备发送所述PDCCH。
可选的，所述处理单元1402在确定所述终端设备满足监测所述PDCCH的条件时，用于：满足第一条件和/或第二条件；其中，所述第一条件包括：有所述LP-WUS发送需求时，控制所述收发单元1401向所述终端设备发送所述LP-WUS；或者，控制所述收发单元1401接收上行业务信息；或者，控制所述收发单元1401在第二时长内未发送所述LP-WUS；所述第二条件包括：控制所述收发单元1401从所述终端设备接收第二信道反馈信息，所述第二信道反馈信息用于指示第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ、LP-WUS的检测概率或低功耗同步信号LP-SS检测概率。
可选的，所述处理单元1402在有PDCCH发送需求时，控制所述收发单元1401向所述终端设备发 送所述PDCCH时，用于：在第三时刻开始，并且有所述PDCCH发送需求时，控制所述收发单元1401向所述终端设备发送所述PDCCH。
一种可能的方式中，所述处理单元1402在有PDCCH发送需求时，控制所述收发单元1401向所述终端设备发送所述PDCCH之前，还用于：控制所述收发单元1401在第三时刻之后从所述终端设备接收反馈信息，所述反馈信息用于指示所述终端设备不监测所述LP-WUS或者所述终端设备开始监测所述PDCCH。
示例性的，所述第三时刻与第四时刻相关，所述第四时刻为所述网络设备发送所述LP-WUS的时刻，或者所述上行业务信息传输完成的时刻，或者所述第二时长的结束时刻。
可选的，所述终端设备被配置连接态非连续接收C-DRX；所述收发单元1401还用于：在激活时间内，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH。
可选的，所述终端设备被配置连接态非连续接收C-DRX；所述收发单元1401还用于：在激活时间内或所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；若在激活时间内发送所述LP-WUS后，确定在发送所述LP-WUS的时刻起的第三时长后，有PDCCH发送需求时向所述终端设备发送PDCCH；或者，若在所述激活时间外发送所述LP-WUS后，确定在发送所述LP-WUS的时刻起的第四时长后，有所述PDCCH发送需求时向所述终端设备发送所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。
示例性的，所述激活时间包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。
一种可能的方式中，所述收发单元1401还可以用于向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS，所述处理单元1402还可以用于启动第一定时器，所述激活时间包括所述第一定时器运行的时间。
可选的，所述收发单元1401还可以用于：确定在所述激活时间内的所述第一定时器运行的时间内开始有PDCCH发送需求时，向所述终端设备发送PDCCH。
一种示例中，所述收发单元1401还可以用于：向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并在距离所述网络设备发送所述LP-WUS的时刻最近的所述激活时间开始，有PDCCH发送需求时，向所述终端设备发送PDCCH。
一种可能的方式中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述收发单元1401还用于：确定有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送所述DCP。
可选的，所述处理单元1402还用于：若所述收发单元1401未在所述DCP的发送时机发送所述DCP，确定DRX ON时段定时器不启动。
一种可能的实施方式中，所述收发单元1401还可以用于：有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。
一种示例中，所述LP-WUS用于唤醒所述终端设备，包括：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。
可选的，所述收发单元1401还用于：向所述终端设备发送所述LP-WUS后，所述网络设备在第五时长内有PDCCH发送需求时向所述终端设备发送PDCCH；确定若在所述第五时长内未向所述终端设备发送PDCCH时，所述网络设备有所述LP-WUS发送需求时向所述终端设备发送所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
一种可选的方式中，所述收发单元1401还用于：在所述处理单元1402确定所述终端设备满足监测所述LP-WUS的条件，并且有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS之前，向所述终端设备发送所述LP-WUS的配置信息。
示例性的，所述LP-WUS采用开关键控OOK调制或频移键控FSK调制。
在另一个实施例中，所述通信装置1400用于实现上述图13所示的实施例中终端设备的功能时，具体可以包括：所述收发单元用于从网络设备接收配置连接态非连续接收C-DRX的信息；所述处理单元1402用于在激活时间内监测低功耗唤醒信号LP-WUS；所述LP-WUS用于唤醒所述终端设备；以及在所述激活时间内去激活监测PDCCH。
示例性的，所述激活时间包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。
可选的，所述处理单元1402还用于：若在所述激活时间内监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH；或者，在所述激活时间外监测所述LP-WUS；若在所述激活时间外监测到所述LP-WUS后，所述终端设备在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。
一种可能的方式中，所述处理单元1402还用于：监测到所述LP-WUS后，停止监测所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。
可选的，所述处理单元1402还用于：在所述激活时间内的所述第一定时器运行的时间内开始监测PDCCH。
另一种可能的方式中，所述处理单元1402还用于：监测到所述LP-WUS后，停止监测所述LP-WUS并在距离监测到所述LP-WUS的时刻最近的所述激活时间开始监测PDCCH。
在一种可选的实施方式中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述处理单元1402还用于：在监测所述LP-WUS时，不监测所述DCP。
可选的，所述处理单元1402还用于：若在监测所述LP-WUS时未在所述DCP的监测时机监测到所述DCP，确定不启动DRX ON时段定时器。
示例性的，所述处理单元1402在确定不启动所述DRX ON时段定时器时，用于：物理层向所述终端设备的媒体接入控制层发送第一指示信息，所述第一指示信息用于指示所述DCP的解码结果为0；媒体接入控制层根据所述第一指示信息确定不启动所述DRX ON时段定时器；或者，媒体接入控制层根据在监测所述LP-WUS，确定不启动所述DRX ON时段定时器。
一种可选的方式中，所述处理单元1402还用于：在监测所述LP-WUS时，不监测PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。
示例性的，所述LP-WUS用于唤醒所述终端设备，包括：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。
可选的，所述处理单元1402还用于：监测到所述LP-WUS后，在第五时长内监测PDCCH；若所述收发单元1401在所述第五时长内未接收到所述网络设备的PDCCH时，开始监测所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
在一种可能的设计中，所述收发单元1401还用于：在所述处理单元1402在激活时间内监测所述LP-WUS之前，从网络设备接收所述LP-WUS的配置信息。
示例性的，所述LP-WUS采用开关键控OOK调制或频移键控FSK调制。
一种示例中，所述LP-WUS由所述终端设备的第一电路接收，PDCCH由所述终端设备的第二电路接收，所述第一电路和所述第二电路不同。
在另一个实施例中，所述通信装置1400用于实现上述图13所示的实施例中网络端设备的功能时，具体可以包括：所述收发单元1401用于向终端设备发送配置连接态非连续接收C-DRX的信息；以及，在激活时间内有低功耗唤醒信号LP-WUS发送需求时，向所述终端设备发LP-WUS；所述LP-WUS用于唤醒所述终端设备；所述处理单元1402用于去激活发送PDCCH。
示例性的，所述激活时间包括如下至少一项：DRX ON时段定时器或DRX不活动定时器或DRX下行重传定时器或DRX上行重传定时器或随机接入竞争解决定时器中至少一个正在运行的定时器的时间；或，调度请求已在物理上行控制信道PUCCH上发送，且所述调度请求处于待处理状态的时间；或，在所述终端设备成功接收到随机接入前导的随机接入响应之后，还未接收到媒体接入控制MAC实体的小区无线网络临时标识符C-RNTI所寻址的PDCCH指示的新传输的时间，其中，所述随机接入前导为未被所述MAC实体在基于竞争的随机接入前导中选择的。
可选的，所述收发单元1401还用于：若在所述激活时间内发送所述LP-WUS后，确定在发送所述LP-WUS的时刻起的第三时长后，有PDCCH发送需求时向所述终端设备发送PDCCH；或者，在所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；若在所述激活时间外发送所述LP-WUS后，确定在发送所述LP-WUS的时刻起的第四时长后，有所述PDCCH发送需求时向所述终端设备发送所述PDCCH；其中，所述第三时长和所述第四时长相同或不同。
一种可能的方式中，所述收发单元1401还用于：向所述终端设备发送所述LP-WUS后，确定不向所述终端设备所述LP-WUS，所述处理单元1402还用于：启动第一定时器，所述激活时间包括所述第一定时器运行的时间。
可选的，所述收发单元1401还用于：确定在所述激活时间内的所述第一定时器运行的时间内开始有PDCCH发送需求时，向所述终端设备发送所述PDCCH。
一种可能的方式中，所述收发单元1401还用于：向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并在距离所述网络设备发送所述LP-WUS的时刻最近的所述激活时间开始，有PDCCH发送需求时，向所述终端设备发送PDCCH。
在一种可选的实施方式中，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述收发单元1401还用于：确定有所述LP-WUS发送需求时，向所述终端设备发送LP-WUS时，不向所述终端设备发送所述DCP。
可选的，所述处理单元1402还用于：若所述收发单元1401未在所述DCP的发送时机发送所述DCP，确定DRX ON时段定时器不启动。
又一种可选的实施方式中，所述收发单元1401还用于：确定有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH监测自适应指示信息，所述PDCCH监测自适应指示信息用于指示跳过PDCCH或搜索空间组切换中的至少一项。
示例性的，所述LP-WUS用于唤醒所述终端设备，包括：所述LP-WUS包括所述终端设备的标识，所述终端设备的标识用于唤醒所述终端设备；或者，所述LP-WUS包括所述终端设备的标识的部分信息，所述终端设备的标识的部分信息和所述LP-WUS占用的第一时域位置用于唤醒所述终端设备，其中，所述第一时域位置与所述终端设备的标识相关；或者，所述LP-WUS包括终端设备组的标识的部分信息，所述终端设备组的标识的部分信息和所述LP-WUS占用的第二时域位置用于唤醒所述终端设备，其中，所述第二时域位置与所述终端设备组的标识相关；或者，所述LP-WUS包括终端设备组的标识，所述终端设备组的标识用于唤醒所述终端设备组，所述终端设备组包括所述终端设备；或者，所述LP-WUS包括多个比特，所述多个比特与多个终端设备对应，所述多个比特中的第一比特用于唤醒所述终端设备。
可选的，所述收发单元1401还用于：向所述终端设备发送所述LP-WUS后，在第五时长内有PDCCH发送需求时向所述终端设备发送所述PDCCH；确定若在所述第五时长内未向所述终端设备发送PDCCH时，有所述LP-WUS发送需求时向所述终端设备发送所述LP-WUS；其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
一种示例中，所述收发单元1401还用于：在激活时间内有LP-WUS发送需求时，向所述终端设备发LP-WUS之前，向所述终端设备发送所述LP-WUS的配置信息。
示例性的，所述LP-WUS采用开关键控OOK调制或频移键控FSK调制。
需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
基于以上实施例，本申请实施例还提供了一种通信装置，参阅图15所示，通信装置1500可以包括收发器1501和处理器1502。可选的，所述通信装置1500中还可以包括存储器1503。其中，所述存储器1503可以设置于所述通信装置1500内部，还可以设置于所述通信装置1500外部。其中，所述处理器1502可以控制所述收发器1501接收和发送信号、信息、消息或数据等。
具体地，所述处理器1502可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。所述处理器1502还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic，GAL)或其任意组合。
其中，所述收发器1501、所述处理器1502和所述存储器1503之间相互连接。可选的，所述收发器1501、所述处理器1502和所述存储器1503通过总线1504相互连接；所述总线1504可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图15中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在一种可选的实施方式中，所述存储器1503，用于存放程序等。具体地，程序可以包括程序代码，该程序代码包括计算机操作指令。所述存储器1503可能包括RAM，也可能还包括非易失性存储器(non-volatile memory)，例如一个或多个磁盘存储器。所述处理器1502执行所述存储器1503所存放的应用程序，实现上述功能，从而实现通信装置1500的功能。
示例性地，该通信装置1500可以是上述实施例中的网络设备；还可以是上述实施例中的终端设备。
在一个实施例中，所述通信装置1500在实现图9所示的实施例中终端设备的功能时，收发器1501可以实现图9所示的实施例中的由终端设备执行的收发操作；处理器1502可以实现图9所示的实施例中由终端设备执行的除收发操作以外的其他操作。具体的相关具体描述可以参见上述图9所示的实施例中的相关描述，此处不再详细介绍。
在另一个实施例中，所述通信装置1500在实现图9所示的实施例中网络设备的功能时，收发器1501可以实现图9所示的实施例中的由网络设备执行的收发操作；处理器1502可以实现图9所示的实施例中由网络设备执行的除收发操作以外的其他操作。具体的相关具体描述可以参见上述图9所示的实施例中的相关描述，此处不再详细介绍。
在另一个实施例中，所述通信装置1500在实现图13所示的实施例中终端设备的功能时，收发器1501可以实现图13所示的实施例中的由终端设备执行的收发操作；处理器1502可以实现图13所示的 实施例中由终端设备执行的除收发操作以外的其他操作。具体的相关具体描述可以参见上述图13所示的实施例中的相关描述，此处不再详细介绍。
在另一个实施例中，所述通信装置1500在实现图13所示的实施例中网络设备的功能时，收发器1501可以实现图13所示的实施例中的由网络设备执行的收发操作；处理器1502可以实现图13所示的实施例中由网络设备执行的除收发操作以外的其他操作。具体的相关具体描述可以参见上述图13所示的实施例中的相关描述，此处不再详细介绍。
基于以上实施例，本申请实施例提供了一种通信系统，该通信系统可以包括上述实施例涉及的终端设备和网络设备等。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序，该计算机程序被计算机执行时，所述计算机可以实现上述方法实施例提供的通信方法。
本申请实施例还提供一种计算机程序产品，所述计算机程序产品用于存储计算机程序，该计算机程序被计算机执行时，所述计算机可以实现上述方法实施例提供的通信方法。
本申请实施例还提供一种芯片，包括处理器，所述处理器与存储器耦合，用于调用所述存储器中的程序使得所述芯片实现上述方法实施例提供的通信方法。
本申请实施例还提供一种芯片，所述芯片与存储器耦合，所述芯片用于实现上述方法实施例提供的通信方法。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (29)

  1. 一种通信方法，其特征在于，包括：
    确定是否满足监测低功耗唤醒信号LP-WUS的条件；其中，所述LP-WUS用于唤醒所述终端设备；
    确定满足监测所述LP-WUS的条件，监测所述LP-WUS。
  2. 如权利要求1所述的方法，其特征在于，所述确定满足监测所述LP-WUS的条件，包括：
    从网络设备接收第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS；或者，确定在第一时长内未从所述网络设备接收到调度信息。
  3. 如权利要求2所述的方法，其特征在于，所述监测所述LP-WUS，包括：
    在第一时刻开始监测所述LP-WUS。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述监测所述LP-WUS时，所述方法还包括：
    确定是否满足监测物理下行控制信道PDCCH的条件；
    确定满足监测所述PDCCH的条件，监测所述PDCCH。
  5. 如权利要求4所述的方法，其特征在于，所述确定满足监测所述PDCCH的条件，包括：
    满足第一条件和/或第二条件；
    其中，所述第一条件包括：从网络设备监测到所述LP-WUS；或者，发送上行业务信息；或者，在第二时长内未监测到所述LP-WUS；
    所述第二条件包括：确定第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ、LP-WUS的检测概率或低功耗同步信号LP-SS检测概率。
  6. 如权利要求4或5所述的方法，其特征在于，所述监测所述PDCCH之前，所述方法还包括：
    在第三时刻之后向网络设备发送反馈信息，所述反馈信息用于指示不监测所述LP-WUS或者开始监测所述PDCCH。
  7. 如权利要求1-6任一项所述的方法，其特征在于，终端设备被配置连接态非连续接收C-DRX；所述方法还包括：
    在激活时间内监测所述LP-WUS时，不监测PDCCH。
  8. 如权利要求1-7任一项所述的方法，其特征在于，终端设备被配置连接态非连续接收C-DRX；所述方法还包括：
    在激活时间内或者所述激活时间外监测所述LP-WUS；
    若在所述激活时间内监测到所述LP-WUS后，在监测到所述LP-WUS的时刻起的第三时长后监测PDCCH；或者
    若在所述激活时间外监测到所述LP-WUS后，在监测到所述LP-WUS的时刻起的第四时长后监测所述PDCCH；
    其中，所述第三时长和所述第四时长相同或不同。
  9. 如权利要求7或8所述的方法，其特征在于，所述方法还包括：
    监测到所述LP-WUS后，停止监测所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。
  10. 如权利要求1-9任一项所述的方法，其特征在于，终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述方法还包括：
    在监测所述LP-WUS时，不监测所述DCP。
  11. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    若在监测所述LP-WUS时未在所述DCP的监测时机监测到所述DCP，确定不启动DRX ON时段定时器。
  12. 如权利要求1-11任一项所述的方法，其特征在于，所述方法还包括：
    监测到所述LP-WUS后，在第五时长内监测PDCCH；
    若在所述第五时长内未接收到网络设备的PDCCH时，开始监测所述LP-WUS；
    其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
  13. 一种通信方法，其特征在于，包括：
    确定终端设备是否满足监测低功耗唤醒信号LP-WUS的条件；其中，所述LP-WUS用于唤醒所述终端设备；
    确定所述终端设备满足监测所述LP-WUS的条件，并且有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
  14. 如权利要求13所述的方法，其特征在于，所述确定所述终端设备满足监测所述LP-WUS的条件，包括：
    向所述终端设备发送第一信息，所述第一信息用于指示所述终端设备监测所述LP-WUS；或者，确定在第一时长内未向所述终端设备发送调度信息。
  15. 如权利要求14所述的方法，其特征在于，所述有LP-WUS发送需求时，向所述终端设备发送所述LP-WUS，包括：
    在第一时刻开始，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS。
  16. 如权利要求13-15任一项所述的方法，其特征在于，所述确定所述终端设备满足监测所述LP-WUS的条件后，所述方法还包括：
    确定所述终端设备是否满足监测下行控制信道PDCCH的条件；
    确定所述终端设备满足监测所述PDCCH的条件，并且有PDCCH发送需求时，向所述终端设备发送所述PDCCH。
  17. 如权利要求16所述的方法，其特征在于，所述确定所述终端设备满足监测所述PDCCH的条件，包括：
    满足第一条件和/或第二条件；
    其中，所述第一条件包括：有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；或者，接收上行业务信息；或者，在第二时长内未发送所述LP-WUS；
    所述第二条件包括：从所述终端设备接收第二信道反馈信息，所述第二信道反馈信息用于指示第二信道质量参数小于或者等于第二阈值，所述第二信道质量参数为如下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ、LP-WUS的检测概率或低功耗同步信号LP-SS检测概率。
  18. 如权利要求16或17所述的方法，其特征在于，所述有PDCCH发送需求时，向所述终端设备发送所述PDCCH之前，所述方法还包括：
    在第三时刻之后从所述终端设备接收反馈信息，所述反馈信息用于指示所述终端设备不监测所述LP-WUS或者所述终端设备开始监测所述PDCCH。
  19. 如权利要求13-18任一项所述的方法，其特征在于，所述终端设备被配置连接态非连续接收C-DRX；所述方法还包括：
    在激活时间内，并且有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送PDCCH。
  20. 如权利要求13-19任一项所述的方法，其特征在于，所述终端设备被配置连接态非连续接收C-DRX；所述方法还包括：
    在激活时间内或所述激活时间外，有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS；
    若在激活时间内发送所述LP-WUS后，确定在发送所述LP-WUS的时刻起的第三时长后，有PDCCH发送需求时向所述终端设备发送PDCCH；或者
    若在所述激活时间外发送所述LP-WUS后，确定在发送所述LP-WUS的时刻起的第四时长后，有所述PDCCH发送需求时向所述终端设备发送所述PDCCH；
    其中，所述第三时长和所述第四时长相同或不同。
  21. 如权利要求19或20所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送所述LP-WUS后，不向所述终端设备发送所述LP-WUS并启动第一定时器，所述激活时间包括所述第一定时器运行的时间。
  22. 如权利要求13-21任一项所述的方法，其特征在于，所述终端设备被配置监测功耗节省无线网络临时标识加扰的下行控制信息DCP；所述方法还包括：
    确定有所述LP-WUS发送需求时，向所述终端设备发送所述LP-WUS时，不向所述终端设备发送所述DCP。
  23. 如权利要求22所述的方法，其特征在于，所述方法还包括：
    若未在所述DCP的发送时机发送所述DCP，确定DRX ON时段定时器不启动。
  24. 如权利要求13-23任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送所述LP-WUS后，在第五时长内有PDCCH发送需求时向所述终端设备发送PDCCH；
    确定若在所述第五时长内未向所述终端设备发送PDCCH时，有所述LP-WUS发送需求时向所述终端设备发送所述LP-WUS；
    其中，所述第五时长包含于所述LP-WUS，或者所述第五时长包含于所述LP-WUS的配置信息。
  25. 一种通信装置，其特征在于，包括存储器，处理器和收发器，其中：
    所述存储器用于存储计算机指令；
    所述收发器用于接收和发送信号；
    所述处理器与所述存储器耦合，用于调用所述存储器中的计算机指令，以通过所述收发器执行如权利要求1-12任一项所述的方法。
  26. 一种通信装置，其特征在于，包括存储器，处理器和收发器，其中：
    所述存储器用于存储计算机指令；
    所述收发器用于接收和发送信号；
    所述处理器与所述存储器耦合，用于调用所述存储器中的计算机指令，以通过所述收发器执行如权利要求13-24任一项所述的方法。
  27. 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中存储有计算机可执行指令，所述计算机可执行指令在被所述计算机调用时以执行如权利要求1-12中任一项所述的方法，或者执行如权利要求13-24中任一项所述的方法。
  28. 一种计算机程序产品，其特征在于，包含指令，当所述指令在计算机上运行时，使得如权利要求1-12中任一项所述的方法，或如权利要求13-24中任一项所述的方法被执行。
  29. 一种芯片，其特征在于，所述芯片与存储器耦合，用于读取并执行所述存储器中存储的程序指令，以实现如权利要求1-12中任一项所述的方法，或者实现如述权利要求13-24中任一项所述的方法。
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