A communication method, device and computer readable storage medium

Abstract

The embodiments of the present invention provide a communication method, an apparatus and a computer-readable storage medium, which are used to solve the problem of delay in sending or receiving data of a terminal device in the prior art. The method includes: if there is no detection opportunity for a wake-up signal in a first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device, then detecting a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel in the On Duration time period, and the first time window is located before the On Duration time period in time.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed with the Chinese Patent Office on August 30, 2019, with application number PCT / CN2019 / 103855 and application name “A communication method, device and computer-readable storage medium”, the entire contents of which are incorporated by reference in this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a communication method, device and computer-readable storage medium. Background Art

[0004] At present, the terminal device can detect a physical downlink control channel-based wake-up signal (physical downlink control channel-based wake-up signal, also known as PDCCH WUS) in the wake-up signal (WUS) search time window. If the terminal device detects PDCCH WUS within the WUS search time window, it detects the downlink control channel within the On Duration time period of the wake-up mode in the discontinuous reception (DRX) state. If the terminal device does not detect PDCCH WUS within the WUS search time window, it remains in the sleep state within the OnDuration time period of the DRX state, that is, it does not detect PDCCH.

[0005] The sending timing of PDCCH WUS is the same as PDCCH, and can be sent in a predefined search space set (searchspace set), and the search space set has a preconfigured bandwidth and sending period on the time-frequency resources. In the prior art, in order to save the overhead of downlink air interface resources, the network equipment generally sets the search space set sending period to be greater than the WUS search time window, but such a setting often causes the sending timing of PDCCH WUS to fall outside the WUS search window. Since there is no sending timing of PDCCH WUS in the WUS search window, the terminal device cannot determine when to detect PDCCH WUS, and even if it detects, it will definitely not be able to detect WUS in the WUS search time window. Therefore, when OnDuration arrives, the terminal device does not know how to respond, which leads to delays in data transmission or reception.

[0006] In addition, even if the timing of sending PDCCH WUS happens to fall within the WUS search window, if the timing of sending PDCCH WUS is within the switching delay time corresponding to the bandwidth part (BWP) switching executed by the terminal device, then the terminal device will be unable to detect whether the network device has sent PDCCH WUS within the WUS search time window due to the interruption of the RF transceiver function. Therefore, when the On Duration arrives, the terminal device still does not know how to respond, which leads to delays in data sending or receiving. Summary of the invention

[0007] Embodiments of the present invention provide a communication method, an apparatus, and a computer-readable storage medium, which are used to solve the problem of delay in sending or receiving data of a terminal device in the prior art.

[0008] In a first aspect, the present invention provides a first communication method, which can be executed by a communication device, such as a terminal device, or a chip in the terminal device. The method includes: if there is no detection opportunity for a wake-up signal in a first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device, then detecting a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel in the On Duration time period, and the first time window is located before the On Duration time period in time.

[0009] Correspondingly, in a second aspect, a communication method is provided, which can be executed by a communication device, such as a network device, or a chip in a network device, and the network device is, for example, a base station. The method includes: if there is no detection opportunity for a wake-up signal within a first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device, then a physical downlink control channel is sent within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0010] In an embodiment of the present invention, when there is no detection opportunity of WUS in the first time window or the first time window does not include the detection opportunity of WUS in at least one search space set configured for the terminal device, the behavior of the terminal device when OnDuration arrives is clarified, that is, the terminal device wakes up and detects PDCCH when OnDuration arrives. In this way, on the one hand, the problem of data transmission or reception delay caused by the inability of the terminal device to clarify the behavior when OnDuration arrives can be avoided; on the other hand, the network device can configure the transmission period of the search space set to be greater than the length of the WUS search time window, and when the network device sends PDCCHWUS through group-based PDCCH, the downlink signaling overhead can be reduced.

[0011] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0012] Through this implementation, the flexibility of the network device in sending the wake-up signal can be improved.

[0013] In a third aspect, a communication method is provided, which can be executed by a communication device, such as a terminal device, or a chip in the terminal device. The method includes: if there is a detection opportunity for a wake-up signal within a first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching, then detecting a physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0014] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0015] Through this implementation, the flexibility of the network device in sending the wake-up signal can be improved.

[0016] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; and detecting the physical downlink control channel within the On Duration time period includes: detecting the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0017] Through this implementation, when the terminal device cannot detect the WUS in the BWP after the switch of the first cell due to the BWP switch in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP after the switch arrives. In this way, the problem of data transmission or reception delay in the first cell due to the inability of the terminal device to clarify the behavior when the OnDuration arrives can be avoided.

[0018] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; and detecting the physical downlink control channel within the On Duration time period includes: detecting the physical downlink control channel within the OnDuration time period of the DRX state configured in the BWP of the second cell.

[0019] Through this implementation, when the terminal device cannot detect the WUS in the BWP of the second cell due to the BWP switching in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP of the second cell arrives. In this way, the problem of data transmission or reception delay in the second cell due to the inability of the terminal device to clarify the behavior when the On Duration arrives can be avoided.

[0020] Correspondingly, in a fourth aspect, a communication method is provided, which can be executed by a communication device, such as a network device, or a chip in a network device, and the network device is, for example, a base station. The method includes: if there is a detection opportunity for a wake-up signal within a first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching, then a physical downlink control channel is sent within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0021] In the embodiment of the present invention, when the terminal device cannot detect WUS due to BWP switching, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects PDCCH when the On Duration arrives, and the network device can send PDCCH when the On Duration arrives. In this way, the problem of data transmission or reception delay caused by the terminal device being unable to clarify the behavior when the On Duration arrives can be avoided.

[0022] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0023] Through this implementation, the flexibility of the network device in sending the wake-up signal can be improved.

[0024] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; sending the physical downlink control channel within the On Duration time period includes: sending the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0025] Through this implementation, when the terminal device cannot detect WUS in the BWP after switching of the first cell due to the BWP switching reason in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects PDCCH when the On Duration in the BWP after switching arrives, and the network device can send PDCCH when the On Duration in the BWP after switching arrives. In this way, the problem of data transmission or reception delay in the first cell due to the inability of the terminal device to clarify the behavior when the On Duration arrives can be avoided.

[0026] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; sending the physical downlink control channel within the On Duration time period includes: sending the physical downlink control channel within the OnDuration time period of the DRX state configured in the BWP of the second cell.

[0027] Through this implementation, when the terminal device cannot detect the WUS in the BWP of the second cell due to the BWP switching in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP of the second cell arrives, and the network device can send the PDCCH when the On Duration in the BWP of the second cell arrives. In this way, the problem of data transmission or reception delay in the second cell due to the inability of the terminal device to clarify the behavior when the On Duration arrives can be avoided.

[0028] In a fifth aspect, a communication method is provided, which can be executed by a communication device, such as a terminal device, or a chip in the terminal device. The method includes: if there is a detection opportunity for a wake-up signal within a first time window, and the detection opportunity bit of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols are located, then a physical downlink control channel is detected within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0029] Correspondingly, in a sixth aspect, a communication method is provided, which can be executed by a communication device, such as a network device, or a chip in a network device, and the network device is, for example, a base station. The method includes: if there is a detection opportunity for a wake-up signal within a first time window, and the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols flexiblesymbols are located, then a physical downlink control channel is sent within the OnDuration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0030] Through this implementation, when the detection timing of the wake-up signal of the terminal device coincides with the time-frequency region of the flexible symbol, it is clarified that the flexible symbol cannot be occupied by the WUS and is fixed as a downlink symbol. At the same time, the behavior of the UE on the On Duration after the detection timing of the wake-up signal and the time-frequency region of the flexible symbol coincide is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration after the flexible symbol arrives. In this way, the flexible feature that the flexible symbol can be used for uplink and downlink can be maintained, avoiding the problem of data transmission or reception delay caused by the terminal device's inability to clarify the behavior when the On Duration arrives.

[0031] In an embodiment of the present invention, when there is a detection opportunity for a wake-up signal within the first time window, and the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration arrives. In this way, the flexible characteristic that the flexible symbol can be used for uplink and downlink transmission can be maintained, avoiding the problem of data transmission or reception delay caused by the terminal device's inability to clarify the behavior when the On Duration arrives.

[0032] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0033] Through this implementation, the flexibility of the network device in sending the wake-up signal can be improved.

[0034] In one possible design, the flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

[0035] Through this implementation, the flexibility of configuring flexible symbols of network devices can be improved.

[0036] In a seventh aspect, the present invention provides a first communication method, which can be executed by a communication device, such as a terminal device, or a chip in the terminal device. The method includes: if the terminal device cannot detect the wake-up signal within the first time window, detecting the physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0037] In the embodiment of the present invention, when the terminal device cannot detect WUS within the first time window, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects PDCCH when the On Duration arrives. This can avoid the problem of data transmission or reception delay caused by the terminal device being unable to clarify the behavior when the On Duration arrives.

[0038] In an embodiment of the present invention, the reasons why the terminal device cannot detect WUS within the first time window include at least the following three: first, there is no detection opportunity for the wake-up signal within the first time window; second, the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device; third, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; fourth, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located.

[0039] Through this implementation, when the terminal device cannot detect the PDCCH WUS due to the absence of a WUS transmission opportunity within the configured WUS search time window (i.e., the first time window), or the first time window does not include the detection opportunity of the wake-up signal in at least one search space set configured for the terminal device, or BWP switching occurs, or the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located, the behavior of the terminal device when DRX_ON arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when DRX_ON arrives. In this way, on the one hand, the problem of data transmission or reception delay caused by the inability to clarify the behavior of the terminal device when the On Duration arrives can be avoided; on the other hand, the network device can configure the transmission period of the search space set to be greater than the length of the WUS search time window. When the network device sends PDCCHWUS through the group-based PDCCH, the downlink signaling overhead can be reduced; in addition, the flexible feature that the flexible symbol can be used for uplink and downlink can be maintained.

[0040] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0041] Through this implementation, the flexibility of the network device in sending the wake-up signal can be improved.

[0042] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; and detecting the physical downlink control channel within the On Duration time period includes: detecting the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0043] Through this implementation, when the terminal device cannot detect the WUS in the BWP after the switch of the first cell due to the BWP switch in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP after the switch arrives. In this way, the problem of data transmission or reception delay in the first cell due to the inability of the terminal device to clarify the behavior when the OnDuration arrives can be avoided.

[0044] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; and detecting the physical downlink control channel within the On Duration time period includes: detecting the physical downlink control channel within the OnDuration time period of the DRX state configured in the BWP of the second cell.

[0045] Through this implementation, when the terminal device cannot detect the WUS in the BWP of the second cell due to the BWP switching in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP of the second cell arrives. In this way, the problem of data transmission or reception delay in the second cell due to the inability of the terminal device to clarify the behavior when the On Duration arrives can be avoided.

[0046] Correspondingly, in an eighth aspect, a communication method is provided, which can be executed by a communication device, such as a network device, or a chip in a network device, and the network device is, for example, a base station. The method includes: if the terminal device cannot detect the wake-up signal within the first time window, sending a physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0047] In the embodiment of the present invention, when the terminal device cannot detect WUS within the first time window, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects PDCCH when the On Duration arrives, and the network device can send PDCCH when the On Duration arrives. This can avoid the problem of data transmission or reception delay caused by the terminal device being unable to clarify the behavior when the On Duration arrives.

[0048] In an embodiment of the present invention, the reasons why the terminal device cannot detect WUS within the first time window include at least the following three: first, there is no detection opportunity for the wake-up signal within the first time window; second, the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device; third, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; fourth, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located.

[0049] Through this implementation, when the terminal device cannot detect the PDCCH WUS due to the absence of a WUS sending opportunity within the configured WUS search time window (i.e., the first time window), or the first time window does not include the detection opportunity of the wake-up signal in at least one search space set configured for the terminal device, or BWP switching occurs, or the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located, the behavior of the terminal device when DRX_ON arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when DRX_ON arrives, and the network device can send the PDCCH when DRX_ON arrives. In this way, on the one hand, the problem of data sending or receiving delay caused by the inability to clarify the behavior of the terminal device when the On Duration arrives can be avoided; on the other hand, the network device can configure the sending period of the searchspace set to be greater than the length of the WUS search time window. When the network device sends the PDCCH WUS through the group-based PDCCH, the downlink signaling overhead can be reduced; in addition, the flexible feature that the flexible symbol can be used for uplink and downlink can be maintained.

[0050] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0051] Through this implementation, the flexibility of the network device in sending the wake-up signal can be improved.

[0052] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; sending the physical downlink control channel within the On Duration time period includes: sending the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0053] Through this implementation, when the terminal device cannot detect the WUS in the BWP after the switch of the first cell due to the BWP switch in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP after the switch arrives, and the network device can send the PDCCH when the On Duration in the BWP after the switch arrives. In this way, the problem of data transmission or reception delay in the first cell due to the inability of the terminal device to clarify the behavior when the On Duration arrives can be avoided.

[0054] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; sending the physical downlink control channel within the On Duration time period includes: sending the physical downlink control channel within the OnDuration time period of the DRX state configured in the BWP of the second cell.

[0055] Through this implementation, when the terminal device cannot detect the WUS in the BWP of the second cell due to the BWP switching in the first cell, the behavior of the terminal device when the On Duration arrives is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration in the BWP of the second cell arrives, and the network device can send the PDCCH when the On Duration in the BWP of the second cell arrives. In this way, the problem of data transmission or reception delay in the second cell due to the inability of the terminal device to clarify the behavior when the On Duration arrives can be avoided.

[0056] In a ninth aspect, a communication device is provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0057] In one possible design, the device includes: a judgment unit, used to judge whether there is a detection opportunity for a wake-up signal within a first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; a detection unit, used to detect a physical downlink control channel within the On Duration time period of a wake-up mode of a discontinuous reception DRX state when there is no detection opportunity for a wake-up signal within the first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is temporally located before the On Duration time period.

[0058] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0059] Correspondingly, in the tenth aspect, a communication device is provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0060] In one possible design, the device includes: a judgment unit, used to judge whether there is a detection opportunity for a wake-up signal within a first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; a sending unit, used to send a physical downlink control channel in the On Duration time period of a wake-up mode of a discontinuous reception DRX state when there is no detection opportunity for a wake-up signal within the first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is temporally located before the On Duration time period.

[0061] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0062] In an eleventh aspect, a communication device is provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0063] In one possible design, the device includes: a judgment unit, used to judge whether there is a detection opportunity for a wake-up signal within a first time window and whether the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; a detection unit, used to detect a physical downlink control channel within the On Duration time period of a wake-up mode of a discontinuous reception DRX state when there is a detection opportunity for a wake-up signal within the first time window and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is temporally located before the On Duration time period.

[0064] Correspondingly, in the twelfth aspect, a communication device is provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0065] In one possible design, the device includes: a judgment unit, used to judge whether there is a detection opportunity for a wake-up signal within a first time window and whether the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; a sending unit, used to send a physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is temporally before the On Duration time period.

[0066] In one possible design, the BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; there is a detection opportunity for a wake-up signal within the first time window, including: there is a detection opportunity for a wake-up signal configured in the second BWP within the first time window; the sending unit is specifically used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0067] In a possible design, the BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; there is a detection opportunity for a wake-up signal within the first time window, including: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; the sending unit is specifically used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0068] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0069] In a thirteenth aspect, a communication device is provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0070] In one possible design, the device includes: a judgment unit, used to judge whether there is a detection opportunity for a wake-up signal within a first time window, and whether the detection opportunity bit of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols are located; a detection unit, used to detect a physical downlink control channel within the On Duration time period of a wake-up mode of a discontinuous reception DRX state when there is a detection opportunity for a wake-up signal within the first time window, and whether the detection opportunity bit of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols are located; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0071] Correspondingly, in the fourteenth aspect, a communication device is provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0072] In one possible design, the device includes: a judgment unit, used to judge whether there is a detection opportunity for a wake-up signal within a first time window, and whether the detection opportunity bit of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols are located; a sending unit, used to send a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity bit of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols are located; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is temporally located before the OnDuration time period.

[0073] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0074] In one possible design, the flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

[0075] In a fifteenth aspect, a communication device is provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0076] In one possible design, the apparatus includes: a judgment unit, used to judge whether the terminal device can detect the wake-up signal within a first time window; a detection unit, used to detect the physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when the terminal device cannot detect the wake-up signal within the first time window; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to indicate that the terminal device detects the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0077] Accordingly, in the sixteenth aspect, a communication device is provided, which is, for example, a network device. The network device has the functions of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0078] In one possible design, the apparatus includes: a judgment unit, used to judge whether the terminal device can detect the wake-up signal within a first time window; a sending unit, used to send a physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when the terminal device cannot detect the wake-up signal within the first time window; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to indicate that the terminal device detects the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0079] In one possible design, the reasons why the terminal device cannot detect WUS within the first time window include at least the following three: first, there is no detection opportunity for the wake-up signal within the first time window; second, the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device; third, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; fourth, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located.

[0080] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0081] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; and the sending unit is used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0082] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; and the sending unit is used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0083] In a seventeenth aspect, an embodiment of the present invention provides a communication device, which is, for example, a terminal device. The communication device has the function of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0084] In one possible design, the specific structure of the communication device may include a memory for storing a computer program; and a processor for executing the computer program stored in the memory, so that the device performs the corresponding functions in the method provided by any possible design of the first aspect, the third aspect, the fifth aspect, or the seventh aspect mentioned above.

[0085] In an eighteenth aspect, an embodiment of the present invention provides a communication device, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0086] In one possible design, the specific structure of the communication device may include a memory for storing a computer program; and a processor for executing the computer program stored in the memory, so that the device performs the corresponding functions in the method provided in any possible design of the second, fourth, sixth or eighth aspects mentioned above.

[0087] In a nineteenth aspect, a communication device is provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0088] In one possible design, the specific structure of the communication device may include a processor, and optionally, a transceiver. The processor and the transceiver may perform the corresponding functions of the method provided in any possible design of the first aspect, the third aspect, the fifth aspect, or the seventh aspect.

[0089] In a twentieth aspect, a communication device is provided, which is, for example, a network device. The communication device has the functions of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0090] In one possible design, the specific structure of the communication device may include a processor, and optionally, a transceiver. The processor and the transceiver may perform the corresponding functions of the method provided in any possible design of the second aspect, the fourth aspect, the sixth aspect, or the eighth aspect.

[0091] In the twenty-first aspect, a computer-readable storage medium is provided, comprising a program or instruction, which, when executed on a computer, executes a method provided by any possible design of the first, third, fifth and seventh aspects described above.

[0092] In the twenty-second aspect, a computer-readable storage medium is provided, comprising a program or instruction, which, when executed on a computer, executes a method provided by any possible design of the second aspect, fourth aspect, sixth aspect or eighth aspect described above.

[0093] In the twenty-third aspect, a chip is provided, which is coupled to a memory and is used to read and execute program instructions stored in the memory to implement a method provided by any possible design of the first aspect, the third aspect, the fifth aspect or the seventh aspect mentioned above.

[0094] In the twenty-fourth aspect, a chip is provided, which is coupled to a memory and is used to read and execute program instructions stored in the memory to implement a method provided by any possible design of the second aspect, fourth aspect, sixth aspect or eighth aspect mentioned above.

[0095] In the twenty-fifth aspect, a computer program product comprising instructions is provided, wherein the computer program product stores instructions that, when executed on a computer, enable the computer to execute a method provided by any possible design of the first, third, fifth or seventh aspects described above.

[0096] In the twenty-sixth aspect, a computer program product comprising instructions is provided, wherein the computer program product stores instructions that, when executed on a computer, enable the computer to execute a method provided by any possible design of the second aspect, fourth aspect, sixth aspect or eighth aspect described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 is a schematic diagram of a DRX cycle;

[0098] Figure 2 A schematic diagram of a signal format of a Group-based WUS;

[0099] Figure 3 is a schematic diagram of a sending period of a search space set;

[0100] Figure 4 Schematic diagram of sending period of two search space sets;

[0101] Figure 5 A schematic diagram showing that a detection opportunity of a PDCCH WUS falls within a WUS search time window;

[0102] Figure 6 A schematic diagram showing that the detection timing of the PDCCH WUS falls outside the WUS search time window;

[0103] Figure 7 is a flow chart of a communication method in an embodiment of the present invention;

[0104] Figure 8 A schematic diagram of a network device sending a WUS through two search space sets in an embodiment of the present invention;

[0105] Fig. 9 is a flow chart of another communication method in an embodiment of the present invention;

[0106] Fig.10 is a flow chart of another communication method in an embodiment of the present invention;

[0107] Fig.11 A schematic diagram of a BWP switching scenario in an embodiment of the present invention;

[0108] Fig.12 A schematic diagram of another BWP switching scenario in an embodiment of the present invention;

[0109] Fig.13 is a flow chart of another communication method in an embodiment of the present invention;

[0110] Fig.14 It is a structural schematic diagram of a communication device in an embodiment of the present invention;

[0111] Fig.15 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0112] Fig.16 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0113] Fig.17 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0114] Fig.18 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0115] Fig.19 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0116] Fig. 20 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0117] Fig.21 This is a schematic diagram of the structure of a communication device in an embodiment of the present invention;

[0118] Fig. 22 is a flow chart of another communication method in an embodiment of the present invention;

[0119] Fig.23 is a flow chart of another communication method in an embodiment of the present invention;

[0120] Fig.24 It is a schematic diagram of the structure of another communication device in an embodiment of the present invention;

[0121] Fig.25 FIG. 4 is a schematic diagram of the structure of another communication device in an embodiment of the present invention. DETAILED DESCRIPTION

[0122] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0123] In order to facilitate understanding of the embodiments of the present invention, the application scenarios of the present application are described below.

[0124] At present, the 3rd Generation Partnership Project (3GPP) standards organization is currently developing the protocol standards for the 5th Generation cellular mobile communication system (5G), which is also called New Radio (NR). Compared with the Long Term Evolution (LTE) system, NR supports larger transmission bandwidth, more transceiver antenna arrays, higher transmission rate, and more flexible and smaller granularity scheduling mechanism. Although NR provides more application scope based on the above characteristics, it greatly increases the power consumption burden of terminal devices. In order to reduce the power consumption of terminal devices, 3GPP introduced the power saving research topic in the NR rel-16 version. Its purpose is to study the possible power saving solutions that enable terminal devices to be in various states (including connection state, idle state, and inactive state). Among them, how to save the power consumption of terminal devices in the connection state is a research focus.

[0125] In the LTE system, 3GPP designed the Discontinuous Reception (DRX) mechanism to reduce the power consumption of terminal devices in the connected state. In the DRX mechanism, when the terminal device is in the activated state of the connected state, an inactive timer will be started, and the terminal device will continuously try to receive the physical downlink control channel (PDCCH). If the terminal device receives downlink control information (DCI) on the PDCCH, the terminal device will restart the inactive timer. If the terminal device does not receive DCI for a period of time, causing the inactive timer to time out, the terminal device will enter the inactive state of DRX.

[0126] like Figure 1 As shown, the basic time unit in the DRX state is a DRX cycle, and the duration of a DRX cycle is the DRX cycle. A DRX cycle consists of a sleep state (i.e., inactive state) and an OnDuration state. Among them, On Duration, that is, the wake-up mode, is also called DRX_ON. When the DRX cycle enters the On Duration, the terminal device will be awakened and monitor the PDCCH. Once the scheduling DCI is received in the PDCCH, the terminal device will restart the inactive timer. If the inactive timer eventually times out, the terminal device will return to the Sleep mode. The Sleep state is the sleep mode, also called DRX_OFF. The terminal device in the Sleep mode can completely shut down communication devices such as the RF transceiver and baseband processor to reduce power consumption.

[0127] It should be noted that, in general, the terminal device does not wake up when the On Duration arrives, but wakes up within a few time slots before the On Duration arrives, and receives the downlink reference signal line for time-frequency synchronization to prevent the terminal device from dormant for a long time, causing the system clock and operating frequency to deviate from the clock and operating frequency of the network device; at the same time, the terminal device can also try to receive the downlink synchronization signal and update the system message first to prevent the system message from deviating after the terminal device moves from one cell to another.

[0128] In the LTE system, 3GPP also designed a wake-up signal (WUS). WUS is a control signal introduced in the narrowband internet of things (NB-IoT) to reduce the power consumption of terminal devices. It is mainly used in the paging mechanism in the idle state. In the idle state, the terminal device is generally in a dormant state, but the terminal device needs to wake up every once in a while to try to receive paging (Paging). Among them, the time when the terminal device is awakened to receive paging is called the paging occasion (PO). In the actual system, the network device does not send Paging to the terminal device at every PO. Therefore, most of the time, the terminal device wakes up at the PO to receive Paging, which is an invalid operation and will increase the power consumption of the terminal device. For this reason, WUS is introduced in the NB-IoT system. If the network device does send Paging to the terminal device in a certain PO, the network device will send WUS before the PO arrives, otherwise the network device will not send WUS. Correspondingly, the terminal device will try to receive WUS before the arrival of PO. If the terminal device receives WUS, the terminal device confirms that there is a Paging message in the next PO, and the terminal device will continue to try to receive Paging. Conversely, if the terminal device does not receive WUS, the terminal device will believe that there is no Paging message in the next PO, and the terminal device will not try to receive Paging and continue to sleep. Since the power consumption and complexity of the terminal device when receiving WUS are much less than the power consumption and complexity of the terminal device when trying to receive Paging, and the probability of the network device sending Paging in the idle state of the terminal device is not high, determining whether the terminal device is awakened by whether WUS is received can greatly save the power consumption of the terminal device.

[0129] NR Rel-16 considers introducing a PDCCH-based wake-up signal (PDCCH-based wake-up signal, referred to as PDCCH WUS or WUS), that is, WUS is carried by PDCCH. The terminal device can turn on the low-power mode in a few time slots before the arrival of DRX_ON, and try to receive the PDCCH WUS sent by the network device. If the terminal device detects PDCCH WUS in this time period, it will wake up in the corresponding DRX_ON time period and then detect PDCCH. Conversely, if the terminal device does not receive PDCCH WUS, the terminal device will assume that there is no PDCCH scheduling in the next DRX_ON, and the terminal device will not try to receive DRX_ON and continue to sleep.

[0130] In addition to carrying the wake-up indication, PDCCH WUS can also carry other parameter configurations for the terminal device in the power saving state, such as the working BWP of the terminal device. The terminal device can reside in a BWP with a narrower bandwidth to detect WUS, and WUS can indicate the working BWP of the terminal device after waking up. The working BWP has a larger bandwidth and a higher data transmission rate. The method for PDCCH WUS to indicate BWP switching can be that the PDCCH WUS carries the target BWP ID, and the terminal device switches to the new BWP by parsing the target BWP ID in the PDCCH WUS.

[0131] PDCCH WUS can be a signal sent to a single user equipment (UE), that is, PDCCH DCI only carries the WUS signal of one UE. This PDCCH WUS is called a user equipment-specific PDCCH wake-up signal (UE-specific PDCCH WUS). Although UE-specific PDCCH WUS can carry a large number of parameter configurations, it will occupy an entire PDCCH, and the resource overhead is too large. Therefore, PDCCH WUS can also be a signal sent to multiple UEs, that is, one PDCCH DCI contains the WUS signals and related configuration information of multiple UEs, such as Figure 2 As shown, this PDCCH WUS is called a group-based wake-up signal (Group-based WUS). Group-based WUS can reduce the overhead of downlink control signaling, but the corresponding configuration information that can be sent to each user equipment is also reduced accordingly.

[0132] The transmission timing of the PDCCH WUS is the same as that of the PDCCH, and can be transmitted in a predefined search space set (search space set). The search space set has a preconfigured bandwidth and transmission period on time-frequency resources.

[0133] The transmission period of the search space set can be configured from 1 time slot to 2560 time slots. In one transmission period, PDCCH WUS can be sent in one or several consecutive time slots. In each time slot where PDCCH WUS is sent, the network device can also configure the specific symbol position for sending PDCCH WUS. One PDCCH WUS transmission time can occupy 1 to 3 symbols in a time slot. These symbols can be called a PDCCH WUS monitoring occasion. The UE only needs to determine the detection occasion of PDCCH WUS based on the configured search space set period, the time slot position where PDCCH WUS appears in each period, the symbol position in each time slot, and the number of continuous symbols. For example, see Figure 3 , is an example of a sending cycle of the search space set, in Figure 3 In the transmission cycle shown, there is a detection opportunity for PDCCH WUS in slot 1 (slot1).

[0134] It should be noted that, in the case of high frequency (radio signal carrier frequency greater than or equal to 6G), the network device can send PDCCH WUS through multiple search spaces, and different search spaces can have different PDCCH monitoring occasion configurations. For example, see Figure 4 An example in which a network device sends a PDCCH WUS through two search space sets (a first search space set and a second search space set), wherein one sending cycle of the first search space set includes four time slots, and the detection timing of the PDCCH WUS is located in time slot 1 (slot1), and one sending cycle of the second search space set includes 3 time slots, and the detection timing of the PDCCH WUS is located in time slot 2 (slot2).

[0135] When 3GPP discussed PDCCH WUS, it was determined that there is a time offset between the transmission time of PDCCH WUS and the start time of DRX_On, but no conclusion has been reached on the specific WUS transmission time. One method of configuring the WUS transmission time is to specify a period of time before DRX_ON (such as a specified number of time slots before the arrival of DRX_ON) as the WUS search time (also referred to as the WUS search time window in this article), such as Figure 5If the terminal device detects PDCCH WUS within the WUS search time, the terminal device wakes up and detects PDCCH during the DRX_ON time period corresponding to the WUS search time. If the UE does not detect PDCCH WUS within the WUS search time, the UE continues to maintain a sleep state during the DRX_ON time period corresponding to the WUS search time and will not detect PDCCH.

[0136] At present, the configuration of the WUS search time window and the configuration of the search space set by the network device are independent of each other, that is, the terminal device determines the WUS search time window only by relying on the length of the time window itself, the time offset, and the start time of DRX_ON, and is completely independent of the time period parameters configured by the search space set. In some cases, such as when the transmission period length of the searchspace is greater than the length of the WUS search time window, it is possible that the transmission timing of the PDCCH WUS falls outside the WUS search window, so that there is no transmission timing of the PDCCH WUS in the WUS search window. Since there is no transmission timing of the PDCCH WUS in the WUS search window, the terminal device cannot determine when to detect the PDCCH WUS, and even if it detects, it will definitely not be able to detect the WUS in the WUS search time window. Therefore, when DRX_ON arrives, the terminal device does not know how to respond (it cannot determine whether to detect the PDCCH), which leads to the problem of data transmission or reception delay.

[0137] To prevent this situation from happening, the network device must configure the transmission period of the search space set to be less than or equal to the length of the WUS search time window to ensure that the WUS search time window will have the opportunity to send the PDCCH WUS. However, this configuration requirement will limit the flexibility of the network device, especially for the group-based PDCCH-WUS. Since the group-based WUS is configured for a group of UEs, there may be UEs that need to be awakened in each transmission period of the search space set. A too small search space period will cause the base station to send a large number of PDCCH WUS, occupying downlink air interface resources and sacrificing a lot of system overhead.

[0138] In addition, in the prior art, when the terminal device performs BWP switching, there is a switching delay (BWP switch delay) time. During the switching delay time, the RF transceiver function of the terminal device will be interrupted and no data transceiver operation can be performed. Therefore, in this scenario, even if the terminal device can determine that there is a PDCCH WUS sending opportunity within the WUS search time window, but if the PDCCH WUS sending opportunity is within the switching delay time corresponding to the terminal device performing the BWP switching, then the terminal device has no ability to detect whether the network device has sent the PDCCH WUS within the WUS search time window. Therefore, when DRX_ON arrives, the terminal device still does not know how to respond (unable to decide whether to detect PDCCH), which will also cause data sending or receiving delays.

[0139] In another case, if the terminal device in the prior art works in the time division duplex mode, the time slots for the terminal device communication can be divided into uplink time slots, downlink time slots, etc. The uplink time slots are used to send uplink data, uplink control signaling, reference signals, etc., and the downlink time slots are used to receive synchronous broadcast channels, downlink control channels, downlink data, reference signals, etc. Excluding the uplink time slots and downlink time slots, the symbols in the remaining time slots can be configured as uplink symbols, downlink symbols, and flexible symbols, wherein the flexible symbols can be dynamically used for downlink reception or uplink transmission according to the actual scheduling situation, and the uplink or downlink air interface capacity can be flexibly adjusted. However, if the sending timing of the wake-up signal coincides with the flexible symbol, in order to support the sending of the wake-up signal, the flexible symbol must be used for downlink reception, thereby reducing the flexibility of the flexible symbol utilization.

[0140] In view of this, an embodiment of the present invention provides a communication method, which is used to clarify the behavior of the terminal device when DRX_ON arrives when the terminal device cannot detect PDCCH WUS due to the absence of PDCCH WUS transmission timing within the configured WUS search time window, or BWP switching occurs, or the transmission timing of the wake-up signal coincides with the flexible symbol, so that the terminal device wakes up and detects PDCCH when DRX_ON arrives. In this way, on the one hand, the problem of data transmission or reception delay caused by the inability of the terminal device to clarify the behavior when DRX_ON arrives can be avoided; on the other hand, the network device can configure the transmission period of the search space set to be greater than the length of the WUS search time window, and when the network device sends PDCCH WUS through the group-based PDCCH, the downlink signaling overhead can be reduced. The specific implementation scheme will be introduced in detail later.

[0141] In order to make the embodiments of the present invention clearer, some contents and concepts related to the embodiments of the present invention are uniformly introduced here below.

[0142] 1) Terminal equipment, including equipment that provides voice and / or data connectivity to users, such as a handheld device with wireless connection function, or a processing device connected to a wireless modem. The terminal equipment can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, and computer-built-in mobile devices, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), and other devices. It also includes limited devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners, etc.

[0143] As an example but not limitation, in an embodiment of the present invention, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices or smart wearable devices, etc., which are a general term for the intelligent design of daily wearables using wearable technology and the development of wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-size, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, etc., as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0144] The various terminal devices introduced above, if located on a vehicle (eg, placed in or installed in a vehicle), can be considered as vehicle-mounted terminal devices, which are also called on-board units (OBU).

[0145] 2) Network equipment, such as access network (AN) equipment and radio access network (RAN) equipment. Access network equipment such as base stations (e.g., access points) may refer to equipment in an access network that communicates with wireless terminal devices through one or more cells at an air interface. The base station may be used to convert received air frames to and from Internet Protocol (IP) packets, and serve as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The network equipment may also coordinate the attribute management of the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolved Node B) in a long term evolution (LTE) system or an advanced long term evolution (LTE-A), or may also include a next generation node B (next generation node B, gNB) or a next generation evolved node B (next generation evolved node B, ng-eNB), en-gNB (enhanced next generation node B, gNB): an enhanced next generation base station in a fifth generation mobile communication technology (the 5th generation, 5G) new radio (new radio, NR) system; it may also include a centralized unit (CU) and a distributed unit (DU) in a cloud access network (Cloud RAN) system, or it may also include a relay device, which is not limited in the embodiments of the present invention.

[0146] In addition, in an embodiment of the present invention, the network device may also include a core network device, and the core network device includes, for example, a network device that processes and forwards user signaling and data. In a 4G system, a core network device is, for example, a mobility management entity (MME). MME is a key control node of the access network of the LTE system defined by the 3rd Generation Partnership Project (3GPP) protocol, which is responsible for the positioning and paging process of terminal devices in idle mode, including relays. Simply put, MME is a core network device responsible for the signaling processing part. Alternatively, in a 5G system, the core network device includes, for example, core network devices such as an access management network element, a session management network element, or a user plane gateway. The user plane gateway may be a server having functions such as mobility management, routing, and forwarding of user plane data, and is generally located on the network side, such as a serving gateway (SGW) or a packet data network gateway (PGW) or a user plane function entity (UPF).

[0147] 3) A time window refers to a continuous time period, which has a start time and an end time. The length of the time window is the length from the start time to the end time. For example, the WUS time window in this application may refer to several time slots before the OnDuration arrives.

[0148] 4) Bandwidth part (BWP): Compared with the LTE system, the NR system has a feature that different bandwidths can be configured on the network side and the UE side. The UE can configure its maximum working bandwidth according to its business needs and manufacturing costs. For example, the working bandwidth of a low-cost, low-rate UE may be only 5MHz, while the working bandwidth of a high-rate, high-performance UE may reach 100MHz. If a carrier bandwidth of a cell is set according to a low-cost, low-rate UE (for example, set to 5-10MHz), then the high-performance UE can only obtain a higher rate by using carrier aggregation, which is bound to increase the control signaling overhead and processing complexity; if the carrier bandwidth of the cell is set according to a high-rate, high-performance UE (for example, 100MHz), then the low-cost UE must be equipped with RF and baseband devices suitable for large bandwidth to access the cell, which undoubtedly increases the cost. Therefore, NR introduces the concept of BWP.

[0149] Among them, a BWP is a continuous frequency resource on a cell carrier. The base station can configure different BWPs with different bandwidth sizes for different UEs. When a BWP is configured and activated, it is called an active BWP. The data and control information sent uplink or received downlink by the UE will be limited to the active BWP. In the NRRel-15 version of the protocol, a UE can only have one active BWP.

[0150] 5) BWP switching: To enable the UE to send and receive data on different BWPs at different times according to service needs, NR can support UE to perform BWP switching, that is, switching the activated BWP from one BWP to another.

[0151] Currently, NR can support two methods for BWP switching:

[0152] Method 1: Use the DCI in the scheduling data to trigger the UE to switch the BWP. Generally, the DCI of the scheduling data can be DCI format 1_1 for scheduling the UE to receive downlink PDSCH data, or DCI format 0_1 ​​for scheduling the UE to send physical uplink shared channel (PUSCH) data. After receiving the above scheduling DCI, the UE will switch to the new BWP indicated by the DCI and receive or send data.

[0153] Method 2: Timer-based BWP switching. When the UE switches to a BWP, the UE starts the BWP inactivity timer (BWP-inactivityTimer). Whenever the UE receives a schedule (whether uplink or downlink), the UE restarts the timer. Once the BWP-inactivityTimer times out, the UE switches back to the default BWP.

[0154] 6) Flexible symbol: refers to the symbol resource that is not assigned uplink time slot, uplink symbol, downlink time slot or downlink symbol when the base station configures the time slot format for the UE. The base station can configure the format of a time slot for the UE through RRC signaling (such as common configuration high-level signaling tdd-UL-DL-ConfigurationCommon or dedicated configuration high-level signaling tdd-UL-DL-ConfigDedicated), part of the time slots in the time slot can be configured as uplink time slots or downlink time slots, and part of the symbols in the remaining time slots can be configured as uplink symbols or downlink symbols, and the other part of the symbols that are not configured as uplink symbols and downlink symbols will be regarded as flexible symbols. Flexible symbols can be flexibly used for uplink data, signaling, reference signal transmission, and downlink data, control channel and reference signal reception according to the scheduling of the base station.

[0155] 7) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0156] Furthermore, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, the first priority criterion and the second priority criterion are only used to distinguish different criteria, and do not indicate the difference in the content, priority or importance of the two criteria.

[0157] In addition, the terms "including" and "having" in the embodiments, claims and drawings of the present application are not exclusive. For example, a process, method, system, product or device including a series of steps or modules is not limited to the listed steps or modules, and may also include steps or modules that are not listed.

[0158] The technical solution of the embodiment of the present invention can be applied to the 5G system; it can also be applied to other wireless communication systems, such as the Long Term Evolution (LTE) system, the Global System for Mobile Communication (GSM), the Universal Mobile Telecommunications System (UMTS), the Code Division Multiple Access (CDMA) system, and new network equipment systems.

[0159] Embodiment 1

[0160] See also Figure 7 , is a flow chart of a communication method in an embodiment of the present invention. The method includes:

[0161] S101. A terminal device determines that there is no detection opportunity for a WUS within a first time window or that the first time window does not include a detection opportunity for a WUS in at least one search space set configured for the terminal device.

[0162] S102: The terminal device detects the PDCCH within the On Duration period of the DRX state.

[0163] Among them, the first time window refers to the WUS search time window mentioned above, that is, the time window for detecting WUS. WUS refers to the PDCCH-based WUS mentioned above, that is, a signal for instructing the terminal device to wake up and detect PDCCH within the On Duration time period of the DRX state, and the first time window is located before the On Duration time period in time. WUS can be a UE-specific PDCCH WUS or a Group-based WUS, which is not limited in the embodiments of the present invention.

[0164] The terminal device can determine the specific time position of the WUS search time window from the end time of the WUS search time window based on the end time of the WUS search time window, the offset from the end time of the WUS search time window to the DRX ON start time, and the length of the WUS search time window.

[0165] When the terminal device operates at a low frequency and a high frequency, the conditions under which the terminal device determines whether to detect the PDCCH in the DRX_On time period are different.

[0166] In the low frequency case, that is, when the network device sends WUS through a search space set, if all the detection opportunities of WUS fall outside the first time window (that is, the terminal device determines that there is no detection opportunity of WUS in the first time window), such as Figure 6 As shown, the terminal device wakes up when DRX_On arrives and detects PDCCH.

[0167] In the case of high frequency, that is, when the network device can send WUS through multiple search space sets, if the detection timing of WUS in some search space sets falls outside the first time window, or the detection timing of WUS in all search space sets falls outside the first time window (that is, the terminal device determines that the first time window does not include the detection timing of WUS in at least one search space set configured for the terminal device), then the terminal device wakes up when the wake-up mode On Duration of the discontinuous reception DRX state arrives, and detects PSCCH. For example, see Figure 8 As shown, the UE is configured with two (first and second search space sets), where the detection of WUS in the first search space set is within the WUS search time window, and the detection of WUS in the second search space set is outside the WUS search time window. The terminal device wakes up when DRX_On arrives and detects PDCCH.

[0168] In the embodiment of the present invention, the duration of a sending cycle of the search space set may be greater than the duration of the WUS search time window.

[0169] See also Fig. 9 ,for Figure 7 The communication method shown corresponds to a flow chart of a method performed on the network device side. The method includes:

[0170] S201. The network device determines that there is no detection opportunity for a WUS within a first time window or the first time window does not include a detection opportunity for a WUS in at least one search space set configured for a terminal device.

[0171] S202: The network device sends a PDCCH within the On Duration period of the DRX state.

[0172] Among them, the specific implementation method of the network device determining the detection timing of the absence of WUS in the first time window or the detection timing of the WUS in at least one search space set configured for the terminal device is not included in the first time window can refer to the specific implementation method of the terminal device determining the detection timing of the absence of WUS in the first time window or the detection timing of the WUS in at least one search space set configured for the terminal device in the above step S101, which will not be repeated here.

[0173] It should be understood that, in the specific implementation process, after the network device determines that there is no detection opportunity for WUS in the first time window or the first time window does not include the detection opportunity for WUS in at least one search space set configured for the terminal device, the network device may not send PDCCH in the On Duration time period of the DRX state. However, for the terminal device, regardless of whether the network device sends PDCCH in the On Duration time period of the DRX state, the terminal device must wake up and detect PDCCH in the On Duration time period of the DRX state.

[0174] In the above scheme, when there is no detection opportunity of WUS in the first time window or the first time window does not include the detection opportunity of WUS in at least one search space set configured for the terminal device, the behavior of the terminal device when DRX_ON arrives is clarified, that is, the terminal device wakes up and detects PDCCH when DRX_ON arrives. In this way, on the one hand, the problem of data transmission or reception delay caused by the inability of the terminal device to clarify the behavior when DRX_ON arrives can be avoided; on the other hand, the network device can configure the transmission period of the search space set to be greater than the length of the WUS search time window, and when the network device sends PDCCHWUS through the group-based PDCCH, the downlink signaling overhead can be reduced.

[0175] Embodiment 2

[0176] See also Fig.10 , is a flow chart of another communication method in an embodiment of the present invention. The method includes:

[0177] S301. The terminal device determines that there is a detection opportunity for WUS within a first time window, and the detection opportunity for WUS is within a switching delay time corresponding to a BWP switching.

[0178] S302. The terminal device detects the PDCCH within the On Duration period of the DRX state.

[0179] Among them, the first time window refers to the WUS search time window mentioned above, that is, the time window used to detect WUS. WUS refers to the PDCCH-based WUS mentioned above, that is, the signal used to instruct the terminal device to wake up and detect PDCCH within the On Duration time period of the DRX state, and the first time window is located before the On Duration time period in time. WUS can be UE-specific PDCCH WUS or Group-based WUS, which is not limited in the embodiments of the present invention.

[0180] The terminal device can determine the specific time position of the WUS search time window from the end time of the WUS search time window based on the end time of the WUS search time window, the offset from the end time of the WUS search time window to the DRX ON start time, and the length of the WUS search time window.

[0181] In the embodiment of the present invention, the reason for triggering the terminal device to perform BWP switching may be that the network device triggers the terminal device to perform BWP switching through the DCI of the scheduling data, or that the BWP-inactivity Timer of the terminal device times out, triggering the terminal device to perform BWP switching. The embodiment of the present invention does not make specific restrictions.

[0182] In the embodiment of the present invention, the terminal device detects the PDCCH in the On Duration period of the DRX state, including at least the following two scenarios:

[0183] Scenario 1:

[0184] The terminal device switches from the first BWP of the first cell to the second BWP of the first cell, the detection timing of the WUS configured in the second BWP is within the first time window, the DRX mechanism is configured in the second BWP, and the detection timing of the WUS configured in the second BWP is within the switching delay time corresponding to the switching of the terminal device from the first BWP to the second BWP, then the terminal device will detect the PDCCH within the On Duration time period of the DRX state configured in the second BWP.

[0185] For example, see Fig.11 , the terminal device switches the BWP of cell 1 from BWP1 to BWP2, where BWP2 is configured with a DRX mechanism. There is a detection opportunity for the WUS configured in the second BWP within the WUS search time configured in BWP2, and the switching delay (BWP switch delay) time corresponding to the BWP switching overlaps with the WUS search time window. The detection opportunity for the WUS configured in the second BWP falls within the switching delay time. Although the terminal device has no ability to detect WUS due to interruption of the RF transceiver function caused by the BWP switching within the WUS search time window, when DRX_ON arrives later, the terminal device will wake up and detect PDCCH.

[0186] It should be noted that in scenario 1, the service cell of the terminal device can be one or more (for example, the terminal device has both a primary service cell and a secondary service cell), and the embodiment of the present invention does not impose specific restrictions. When the above-mentioned BWP switching occurs in any cell of the terminal device, the terminal device executes the method steps of steps S301-S302 in the cell.

[0187] Scenario 2:

[0188] The terminal device switches from the first BWP of the first cell to the second BWP of the first cell, and the detection timing of the wake-up signal configured in the BWP of the second cell is within the first time window, and the detection timing of the wake-up signal configured in the BWP of the second cell is within the switching delay time corresponding to the switching of the terminal device from the first BWP to the second BWP, then the terminal device will detect the PDCCH within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0189] For example, see Fig.12 , cell 1 of the terminal device is configured with BWP1 and BWP2, and the terminal device switches the BWP of cell 1 from BWP1 to BWP2. Cell 2 of the terminal device is configured with BWP3, and BWP3 is configured with the DRX mechanism. There is a WUS detection opportunity within the WUS search time configured in BWP3, and the switching delay (BWP switch delay) time corresponding to the BWP switching overlaps with the WUS search time window, and the WUS detection opportunity configured in BWP3 just falls within the switching delay time. In this case, if cell 1 and cell 2 use the same RF link, the RF transceiver function of cell 2 is interrupted within the WUS search time window, and it is unable to detect the WUS, but when DRX_ON arrives, the terminal device will wake up and detect PDCCH in BWP3 of cell 2.

[0190] It should be noted that in scenario 2, the number of service cells of the terminal device is not limited to the two in the above example. However, as long as BWP switching occurs in one of the multiple cells sharing the same radio frequency link, such as the first cell mentioned above, the other cells in the multiple cells can execute the method executed by the second cell mentioned above.

[0191] See also Fig.13 ,for Fig.10 The communication method shown corresponds to a flow chart of a method performed on the network device side. The method includes:

[0192] S401. The network device determines that there is a detection opportunity for WUS within a first time window, and the detection opportunity for WUS is within a switching delay time corresponding to a BWP switching.

[0193] S402: The network device sends a PDCCH within the On Duration period of the DRX state.

[0194] The specific implementation method in which the network device determines that there is a detection opportunity for WUS within the first time window and that the detection opportunity for WUS is within the switching delay time corresponding to the BWP switching can refer to the specific implementation method in which the terminal device determines that there is a detection opportunity for WUS within the first time window and that the detection opportunity for WUS is within the switching delay time corresponding to the BWP switching in the above step S301, which will not be repeated here.

[0195] It should be understood that, in the specific implementation process, after the network device determines that there is a detection opportunity for WUS in the first time window, and the detection opportunity for WUS is within the switching delay time corresponding to the BWP switching, the network device may not send PDCCH in the OnDuration time period of the DRX state. However, for the terminal device, regardless of whether the network device sends PDCCH in the OnDuration time period of the DRX state, the terminal device must wake up and detect PDCCH in the On Duration time period of the DRX state.

[0196] In the above scheme, when the terminal device cannot detect WUS due to BWP switching, the behavior of the terminal device when DRX_ON arrives is clarified, that is, the terminal device wakes up and detects PDCCH when DRX_ON arrives. In this way, the problem of data transmission or reception delay caused by the terminal device being unable to clarify the behavior when DRX_ON arrives can be avoided.

[0197] Embodiment 3

[0198] See also Fig. 22 , is a flow chart of another communication method in an embodiment of the present invention. The method includes:

[0199] S1301. The terminal device determines that there is a detection opportunity for a wake-up signal within a first time window, and the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where flexible symbols are located.

[0200] Exemplarily, part or all of the symbols of the search space set used to send WUS are located within the flexible symbol; or part or all of the symbols of the flexible symbol are located within the WUS detection opportunity, and the embodiment of the present invention does not make specific limitations.

[0201] In an embodiment of the present invention, the flexible symbol may be a flexible symbol configured by a network device through common configuration high-level signaling tdd-UL-DL-ConfigurationCommon or dedicated configuration high-level signaling tdd-UL-DL-ConfigurationDedicated, and the embodiment of the present invention does not impose specific restrictions. The quantization unit of the flexible symbol may be a time unit such as a frame, a subframe, a time slot or a symbol, and the embodiment of the present invention does not impose specific restrictions. Optionally, the network device may be a flexible symbol dynamically indicated by DCI format 2_0.

[0202] S1302. The terminal device detects the PDCCH within the On Duration period of the DRX state.

[0203] Among them, the first time window refers to the WUS search time window mentioned above, that is, the time window used to detect WUS. WUS refers to the PDCCH-based WUS mentioned above, that is, the signal used to instruct the terminal device to wake up and detect PDCCH within the On Duration time period of the DRX state, and the first time window is located before the On Duration time period in time. WUS can be UE-specific PDCCH WUS or Group-based WUS, which is not limited in the embodiments of the present invention.

[0204] The terminal device can determine the specific time position of the WUS search time window from the end time of the WUS search time window based on the end time of the WUS search time window, the offset from the end time of the WUS search time window to the DRX ON start time, and the length of the WUS search time window.

[0205] See also Fig.23 ,for Fig. 22 The communication method shown corresponds to a flow chart of a method performed on the network device side. The method includes:

[0206] S1401: The network device determines that there is a detection opportunity for a wake-up signal within a first time window, and the detection opportunity for the wake-up signal partially or completely overlaps with a time domain resource where flexible symbols are located.

[0207] The specific implementation method in which the network device determines that there is a detection timing for WUS within the first time window and that the detection timing for WUS coincides with the time-frequency domain area of ​​flexiblesymbol can refer to the specific implementation method in which the terminal device determines that there is a detection timing for WUS within the first time window and that the detection timing for WUS coincides with the time-frequency domain area of ​​flexiblesymbol in the above step S301, which will not be repeated here.

[0208] S1402: The network device sends a PDCCH within the On Duration period of the DRX state.

[0209] It should be understood that, in the specific implementation process, after the network device determines that there is a detection opportunity for WUS in the first time window, and the detection opportunity bit of WUS coincides with the time-frequency domain area of ​​the flexible symbol, the network device may not send PDCCH during the On Duration period of the DRX state. However, for the terminal device, regardless of whether the network device sends PDCCH during the On Duration period of the DRX state, the terminal device must wake up and detect PDCCH during the On Duration period of the DRX state.

[0210] In the above scheme, when the detection timing of the wake-up signal of the terminal device coincides with the time domain resources of the flexible symbol, it is clarified that the flexible symbol cannot be occupied by the WUS and is fixed as a downlink symbol. At the same time, the behavior of the UE on the On Duration after the detection timing of the wake-up signal coincides with the time-frequency region of the flexible symbol is clarified, that is, the terminal device wakes up and detects the PDCCH when the On Duration after the flexible symbol arrives. In this way, the flexible feature that the flexible symbol can be used for uplink and downlink can be maintained, avoiding the problem of data transmission or reception delay caused by the terminal device's inability to clarify the behavior when the On Duration arrives.

[0211] Based on the same technical concept, a communication device is also provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0212] For example, see Fig.14The communication device 50 includes: a judgment unit 501, which is used to judge whether there is a detection opportunity for a wake-up signal in a first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; a detection unit 502, which is used to detect a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is no detection opportunity for a wake-up signal in the first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel in the On Duration time period, and the first time window is located before the On Duration time period in time.

[0213] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0214] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0215] Based on the same technical concept, a communication device is also provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0216] For example, see Fig.15 The communication device 6 includes: a judgment unit 601, which is used to judge whether there is a detection opportunity for a wake-up signal within a first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; a sending unit 602, which is used to send a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is no detection opportunity for a wake-up signal within the first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0217] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0218] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0219] Based on the same technical concept, a communication device is also provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0220] For example, see Fig.16 The communication device 70 includes: a judgment unit 701, used to judge whether there is a detection opportunity for a wake-up signal within a first time window and whether the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; a detection unit 702, used to detect a physical downlink control channel within the OnDuration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0221] In a possible design, the BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; there is a detection opportunity for a wake-up signal within the first time window, including: there is a detection opportunity for a wake-up signal configured in the second BWP within the first time window; the detection unit 702 is specifically used to: detect the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0222] In a possible design, the BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; there is a detection opportunity for a wake-up signal within the first time window, including: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; the detection unit 702 is specifically used to: detect the physical downlink control channel within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0223] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0224] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0225] Based on the same technical concept, a communication device is also provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0226] For example, see Fig.17 The communication device 80 includes: a judgment unit 801, used to judge whether there is a detection opportunity for a wake-up signal within a first time window and whether the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; a sending unit 802, used to send a physical downlink control channel within the OnDuration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0227] In a possible design, the BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; there is a detection opportunity for a wake-up signal within the first time window, including: there is a detection opportunity for a wake-up signal configured in the second BWP within the first time window; the sending unit 802 is specifically used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0228] In a possible design, the BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; there is a detection opportunity for a wake-up signal within the first time window, including: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; the sending unit 802 is specifically used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0229] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0230] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0231] Based on the same technical concept, a communication device is also provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0232] For example, see Fig.24 , the communication device 150 includes:

[0233] A judging unit 1501 is configured to judge whether there is a detection opportunity for a wake-up signal in a first time window, and whether the detection opportunity of the wake-up signal partially or completely overlaps with a time domain resource where flexible symbols are located;

[0234] The detection unit 1502 is configured to detect a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal in the first time window and whether the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located;

[0235] Among them, the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period. The first time window is located before the On Duration time period in time.

[0236] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0237] In one possible design, the flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

[0238] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0239] Based on the same technical concept, a communication device is also provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0240] For example, see Fig.25 , the communication device 160 includes:

[0241] The judging unit 1601 is configured to judge whether there is a detection opportunity for a wake-up signal in the first time window, and whether the detection opportunity of the wake-up signal partially or completely overlaps with a time domain resource where flexible symbols are located;

[0242] The sending unit 1602 is configured to send a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and the detection opportunity of the wake-up signal partially or completely coincides with the time domain resources where the flexible symbols are located;

[0243] Among them, the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period. The first time window is located before the On Duration time period in time.

[0244] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

[0245] In one possible design, the flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

[0246] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0247] Based on the same technical concept, a communication device is also provided, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0248] For example, see Fig.18 The communication device 90 includes: a judgment unit 901, used to judge whether the terminal device can detect the wake-up signal within the first time window; a detection unit 902, used to detect the physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when the terminal device cannot detect the wake-up signal within the first time window; wherein, the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0249] In one possible design, the reasons why the terminal device cannot detect WUS within the first time window include at least the following three: first, there is no detection opportunity for the wake-up signal within the first time window; second, the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device; third, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching; fourth, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located.

[0250] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0251] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; the detection unit 902 is used to: detect the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0252] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; and the detection unit 902 is used to: detect the physical downlink control channel within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0253] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0254] Based on the same technical concept, a communication device is also provided, which is, for example, a network device. The communication device has the function of implementing the network device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0255] For example, see Fig.19 The communication device 100 includes: a judgment unit 1001, used to judge whether the terminal device can detect the wake-up signal within the first time window; a sending unit 1002, used to send a physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when the terminal device cannot detect the wake-up signal within the first time window; wherein the first time window is a time window for detecting the wake-up signal, the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period, and the first time window is located before the On Duration time period in time.

[0256] In one possible design, the reasons why the terminal device cannot detect WUS within the first time window include at least the following three: first, there is no detection opportunity for the wake-up signal within the first time window; second, the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device; third, there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching.

[0257] In a possible design, the wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS, or it can be a group-based wake-up signal Group-based WUS, which is not limited here.

[0258] In a possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: the presence of a detection opportunity for a wake-up signal configured in the second BWP within the first time window; the sending unit 1002 is used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the second BWP.

[0259] In another possible design, the BWP switching may include: switching from a first BWP of a first cell to a second BWP of the first cell. Accordingly, the presence of a detection opportunity for a wake-up signal within the first time window includes: a detection opportunity for a wake-up signal configured in the BWP of the second cell within the first time window; and the sending unit 1002 is used to: send the physical downlink control channel within the On Duration time period of the DRX state configured in the BWP of the second cell.

[0260] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0261] Based on the same technical concept, an embodiment of the present invention further provides a communication device, which is, for example, a terminal device. The communication device has the function of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0262] For example, see Fig. 20The specific structure of the communication device 110 may include a memory 1101 for storing a computer program; a processor 1102 for executing the computer program stored in the memory 1101, so that the device executes the communication method described in any method embodiment applied to the terminal device or the network device.

[0263] Based on the same technical concept, an embodiment of the present invention further provides a communication device, which is, for example, a terminal device. The communication device has the functions of implementing the terminal device in the above method design. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0264] For example, see Fig.21 The specific structure of the communication device 120 may include a processor 1201, and optionally, may also include a transceiver 1202. The processor 1201 and the transceiver 1202 may execute the communication method described in any method embodiment applied to the terminal device or the network device.

[0265] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (DigitalSignal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0266] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0267] Based on the same technical concept, an embodiment of the present invention also provides a computer-readable storage medium, including a program or instruction. When the program or instruction is run on a computer, the communication method described in any method embodiment applied to a terminal device or a network device is executed.

[0268] Based on the same technical concept, an embodiment of the present invention also provides a chip, which is coupled to a memory and is used to read and execute program instructions stored in the memory to implement the communication method as described in any method embodiment applied to a terminal device or a network device.

[0269] Based on the same technical concept, an embodiment of the present invention also provides a computer program product comprising instructions, wherein the computer program product stores instructions that, when executed on a computer, enable the computer to execute the communication method described in any method embodiment applied to a terminal device or a network device.

[0270] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0271] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0272] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0273] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0274] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0275] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The method comprises: Determine whether there is a detection opportunity for a wake-up signal within the first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; If there is no detection opportunity for the wake-up signal within the first time window or the first time window does not include a detection opportunity for the wake-up signal in the at least one search space set configured for the terminal device, detecting the physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; Among them, the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period. The first time window is located before the On Duration time period in time.

2. The method according to claim 1, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

3. The method according to claim 1, characterized in that The method further comprises: If there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching, the physical downlink control channel is detected within the On Duration time period of the wake-up mode in the discontinuous reception DRX state.

4. The method according to claim 3, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: There is a detection opportunity of the wake-up signal configured in the second BWP within the first time window; Detecting the physical downlink control channel within the On Duration period includes: The physical downlink control channel is detected within the On Duration time period of the DRX state configured in the second BWP.

5. The method according to claim 3, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: A detection opportunity of a wake-up signal configured in the BWP of the second cell within the first time window; Detecting the physical downlink control channel within the On Duration period includes: The physical downlink control channel is detected within the On Duration time period of the DRX state configured in the BWP of the second cell.

6. The method according to any one of claims 3 to 5, characterized in that: The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

7. The method according to claim 1, characterized in that The method comprises: If there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located, the physical downlink control channel is detected within the On Duration time period of the wake-up mode of the discontinuous reception DRX state.

8. The method according to claim 7, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

9. The method according to claim 7, characterized in that The flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

10. A communication method, characterized in that: The method comprises: Determine whether there is a detection opportunity for a wake-up signal within the first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; If there is no detection opportunity for the wake-up signal within the first time window or the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device, sending a physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state; Among them, the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period. The first time window is located before the On Duration time period in time.

11. The method according to claim 10, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

12. The method according to claim 10, characterized in that The method comprises: If the detection opportunity of the wake-up signal exists within the first time window, and the detection opportunity of the wake-up signal is within the switching delay time corresponding to the BWP switching, the physical downlink control channel is sent within the On Duration time period of the wake-up mode of the discontinuous reception DRX state.

13. The method according to claim 12, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: There is a detection opportunity of the wake-up signal configured in the second BWP within the first time window; Sending the physical downlink control channel within the On Duration time period includes: The physical downlink control channel is sent within the On Duration time period of the DRX state configured in the second BWP.

14. The method according to claim 12, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: A detection opportunity of a wake-up signal configured in the BWP of the second cell within the first time window; Sending the physical downlink control channel within the On Duration time period includes: The physical downlink control channel is sent within the On Duration time period of the DRX state configured in the BWP of the second cell.

15. The method according to any one of claims 12 to 14, characterized in that: The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

16. The method according to claim 10, characterized in that The method comprises: If there is a detection opportunity for the wake-up signal within the first time window, and the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located, the physical downlink control channel is sent within the On Duration time period of the wake-up mode of the discontinuous reception DRX state.

17. The method according to claim 16, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

18. The method according to claim 16, characterized in that The flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

19. A communication device, characterized in that: The device comprises: A determination unit, configured to determine whether there is a detection opportunity for a wake-up signal within the first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; A detection unit, configured to detect a physical downlink control channel within an On Duration time period of a wake-up mode in a discontinuous reception DRX state when there is no detection opportunity for the wake-up signal within the first time window or the first time window does not include a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; Among them, the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period. The first time window is located before the On Duration time period in time.

20. The device according to claim 19, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

21. The device according to claim 19, characterized in that The determining unit is further configured to determine whether there is a detection opportunity for the wake-up signal within the first time window and whether the detection opportunity for the wake-up signal is within a switching delay time corresponding to the BWP switching; The detection unit is further used to detect the physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching.

22. The device according to claim 21, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: There is a detection opportunity of the wake-up signal configured in the second BWP within the first time window; The detection unit is specifically used for: The physical downlink control channel is detected within the On Duration time period of the DRX state configured in the second BWP.

23. The device according to claim 21, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: A detection opportunity of a wake-up signal configured in the BWP of the second cell within the first time window; The detection unit is specifically used for: The physical downlink control channel is detected within the On Duration time period of the DRX state configured in the BWP of the second cell.

24. The device according to any one of claims 21 to 23, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

25. The device according to claim 19, characterized in that The determining unit is further configured to determine whether there is a detection opportunity for the wake-up signal within the first time window, and whether the detection opportunity of the wake-up signal partially or completely overlaps with a time domain resource where flexible symbols are located; The detection unit is also used to detect the physical downlink control channel within the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and whether the detection opportunity bit of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located.

26. The device according to claim 25, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

27. The device according to claim 25, characterized in that The flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

28. A communication device, characterized in that: The device comprises: A determination unit, configured to determine whether there is a detection opportunity for a wake-up signal within the first time window or whether the first time window includes a detection opportunity for a wake-up signal in at least one search space set configured for the terminal device; A sending unit, configured to send a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is no detection opportunity for the wake-up signal in the first time window or the first time window does not include a detection opportunity for the wake-up signal in at least one search space set configured for the terminal device; Among them, the first time window is a time window for detecting the wake-up signal, and the wake-up signal is used to instruct the terminal device to detect the physical downlink control channel within the On Duration time period. The first time window is located before the On Duration time period in time.

29. The device according to claim 28, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

30. The device according to claim 28, characterized in that The determining unit is further configured to determine whether there is a detection opportunity for the wake-up signal within the first time window and whether the detection opportunity for the wake-up signal is within a switching delay time corresponding to the BWP switching; The sending unit is used to send a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal in the first time window and the detection opportunity for the wake-up signal is within the switching delay time corresponding to the BWP switching.

31. The device according to claim 30, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: There is a detection opportunity of the wake-up signal configured in the second BWP within the first time window; The sending unit is specifically used for: The physical downlink control channel is sent within the On Duration time period of the DRX state configured in the second BWP.

32. The device according to claim 30, characterized in that The BWP switching includes: switching from a first BWP of a first cell to a second BWP of the first cell; The presence of a detection opportunity for a wake-up signal within the first time window includes: A detection opportunity of a wake-up signal configured in the BWP of the second cell within the first time window; The sending unit is specifically used for: The physical downlink control channel is sent within the On Duration time period of the DRX state configured in the BWP of the second cell.

33. The device according to any one of claims 30 to 32, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

34. The device according to claim 28, characterized in that The determining unit is further configured to determine whether there is a detection opportunity for the wake-up signal within the first time window, and whether the detection opportunity of the wake-up signal partially or completely overlaps with a time domain resource where flexible symbols are located; A sending unit is used to send a physical downlink control channel in the On Duration time period of the wake-up mode of the discontinuous reception DRX state when there is a detection opportunity for the wake-up signal within the first time window and the detection opportunity of the wake-up signal partially or completely overlaps with the time domain resources where the flexible symbols are located.

35. The device according to claim 34, characterized in that The wake-up signal is a user equipment-specific physical downlink control channel wake-up signal UE-specific PDCCH WUS or a group-based wake-up signal Group-based WUS.

36. The device according to claim 34, characterized in that The flexible symbol includes at least one of a frame, a subframe, a time slot or a symbol configured through public configuration signaling or dedicated configuration signaling.

37. A communication device, characterized in that: include: Memory for storing computer programs; A processor, configured to execute the computer program stored in the memory so that the apparatus performs the method according to any one of claims 1 to 9 or 10 to 18.

38. A computer-readable storage medium, characterized in that: The method comprises a program or an instruction, which, when being executed on a computer, enables the computer to execute the method according to any one of claims 1 to 9 or 10 to 18.

39. A chip, characterized in that: The chip includes a hardware integrated logic circuit for implementing the method as described in any one of claims 1-9 or 10-18.

40. A computer program product, characterized in that The device stores instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 9 or 10 to 18.

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