Communication method and device

Abstract

The invention provides a communication method and device, and relates to the technical field of wireless communication. According to the invention, the condition that the terminal device stays in the first link for a long time can be reduced, so that the terminal device can receive the scheduling information of the network device in time, and the service time delay can be reduced. The method includes the terminal device monitoring a low power wakeup signal (LP-WUS) from a network device through a first link. Under the first condition, the terminal device monitors a physical downlink control channel (PDCCH) from the network device through the second link. Wherein the first condition comprises at least one of the following items: a first moment arrives, and the first moment is one of periodic moments; or, the first link does not monitor the LP-WUS in the first duration. Wherein the power consumption of the first link is smaller than that of the second link. For example, the first link may be a secondary link, and the second link may be a primary link.

Description

Technical Field

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

[0002] In the communication system, for the terminal device configured for the low power wake up signal (LP-WUS), when the auxiliary link detects LP-WUS, the terminal device switches from the auxiliary link to the main link and receives the scheduling information sent by the network device through the main link. If the channel quality is poor, the auxiliary link cannot detect LP-WUS, causing the terminal device to work in the auxiliary link for a long time and unable to receive the scheduling information sent by the network device in time, resulting in unnecessary service delays. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides a communication method and device, which can reduce the situation where the terminal device stays in the auxiliary link for a long time, and help reduce service delay. To achieve the above purpose, the present application adopts the following technical solutions:

[0004] In the first aspect, a communication method is provided. The execution subject of the method may be a terminal device, which may be a terminal equipment, or a component applied to the terminal equipment (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal equipment. The following description is taken as an example that the execution subject is the terminal device. The method includes: the terminal device monitors a low-power wake-up signal LP-WUS from a network device through a first link, and under a first condition, monitors a physical downlink control channel PDCCH from the network device through a second link. Among them, the first condition includes at least one of the following: a first moment arrives, and the first moment is one of the periodic moments; or, the first link does not monitor LP-WUS within a first time length. The power consumption of the first link is less than the power consumption of the second link.

[0005] For example, the first link is a secondary link, and the second link is a primary link.

[0006] That is to say, when the terminal device monitors LP-WUS through the first link, the terminal device periodically performs link switching. For example, when one of the periodic moments arrives, such as the first moment arrives, it switches to the second link and monitors PDCCH through the second link, thereby reducing the situation where the terminal device stays on the first link for a long time, thereby enabling the terminal device to receive the scheduling information of the network device in a timely manner, which helps to reduce service delays.

[0007] Alternatively, when the terminal device monitors LP-WUS through the first link, if the duration for which LP-WUS is not monitored reaches a certain duration, such as the first duration, the terminal device switches to the second link and monitors PDCCH through the second link, thereby reducing the situation where the terminal device stays on the first link for a long time, thereby enabling the terminal device to receive the scheduling information of the network device in a timely manner, helping to reduce service latency and ensure normal service reception behavior on the terminal device side.

[0008] In one possible design, the first moment is configured by the network device so that when the terminal device arrives at the first moment, the terminal device initiates a link switch.

[0009] In one possible design, the first duration is configured by the network device so that when the duration during which the terminal device fails to monitor the LP-WUS reaches the first duration, the terminal device initiates a link switch.

[0010] In one possible design, the method further includes: the terminal device receiving first information from the network device, the first information being used to indicate starting a first timer.

[0011] The terminal device monitors the LP-WUS from the network device through the first link, including: monitoring the LP-WUS from the network device through the first link while the first timer is running.

[0012] Under the first condition, the terminal device monitors the PDCCH from the network device through the second link, including: when the first timer times out, monitoring the PDCCH from the network device through the second link, and the running duration of the first timer is the first duration.

[0013] That is to say, initiated by the network device, if the terminal device does not detect LP-WUS within the first time period after the network device configures the first timer for the terminal device, it switches to the second link, thereby reducing the situation where the terminal device stays in the first link for a long time.

[0014] In the second aspect, a communication method is provided. The execution subject of the method may be a terminal device, which may be a terminal equipment, or a component applied to the terminal equipment (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal equipment. The following description is taken as an example that the execution subject is the terminal device. The method includes: the terminal device receives a first signal from a network device through a first link, determines that a radio link failure RLF occurs according to the signal quality of the first signal, and sends first information to the network device through a second link. The first information is used to indicate the occurrence of the RLF, and the power consumption of the first link is less than the power consumption of the second link.

[0015] For example, the first link is a secondary link, and the second link is a primary link.

[0016] That is to say, the terminal device determines whether RLF occurs based on the signal quality of the first signal received by the first link. When RLF occurs, the second link is opened, and the occurrence of RLF is reported to the network device through the second link. On the contrary, when RLF does not occur, there is no need to open the second link, thereby reducing the frequency of opening the second link. Since the power consumption of the first link is less than that of the second link, compared with frequently opening the second link and determining whether RLF occurs based on the signal quality of the signal received by the second link, the present application adopts the first link with lower power consumption to receive the first signal, and determines whether RLF occurs based on the signal quality of the first signal, thereby achieving the effect of reducing power consumption.

[0017] In one possible design, after the terminal device determines that RLF has occurred and before sending first information to the network device via the second link, the method further includes: the terminal device receives a second signal from the network device via the second link, and determines that the RLF has occurred based on a signal quality of the second signal.

[0018] That is, the terminal device verifies whether RLF occurs through the signal quality of the second signal received by the second link, thereby reducing misjudgment of the first link.

[0019] In one possible design, the method further includes: the terminal device receiving first information from the network device, where the first information is used to determine a first threshold.

[0020] The terminal device determines, according to the signal quality of the first signal, that the RLF occurs, including: determining, according to the signal quality of the first signal and the first threshold, that the RLF occurs.

[0021] That is, the network device further provides the first information to the terminal device, so that the terminal device determines the first threshold according to the first information, and further determines whether to send the RLF according to the first threshold and the signal quality of the first signal.

[0022] In one possible design, the first information includes the first threshold.

[0023] In one possible design, the first information includes a first offset, where the first offset is an offset between the first threshold and a second threshold, where the second threshold is used by the terminal device to determine whether RLF occurs based on a signal quality of the second signal, and the method is applied to the terminal device.

[0024] In one possible design, the method also includes: the terminal device receives second information from the network device, the second information is used to configure a first measurement gap, the first measurement gap is used to indicate a time period when the second link is in a closed state, and the first measurement gap includes a time period when the first link monitors the first signal.

[0025] That is to say, in the time period corresponding to the first measurement gap, the first link of the terminal device is turned on, and the second link is turned off, that is, the second link stops working during the operation of the first link. In other words, the present application can make the time period when the second link is turned off cover the time period when the first link is turned on to perform measurement in a scenario where the first link and the second link cannot work at the same time, thereby flexibly and reasonably configuring the measurement time of the first link and the second link.

[0026] In a possible design, the second information includes the first identifier, where the first identifier is used to identify the first measurement gap.

[0027] That is, the network device configures the first measurement gap for the terminal device through the first identifier.

[0028] In one possible design, the second information is also used to configure a second measurement gap, where the second measurement gap is used to indicate a time period during which the first link is in a closed state, and the second measurement gap includes a time period during which the second link monitors the second signal.

[0029] That is to say, in the time period corresponding to the second measurement gap, the second link of the terminal device is turned on, and the first link is turned off, that is, the first link stops working during the operation of the second link. In other words, the present application can make the time period when the first link is turned off cover the time period when the second link is turned on to perform measurement in a scenario where the first link and the second link cannot work at the same time, thereby flexibly and reasonably configuring the measurement time of the first link and the second link.

[0030] In a possible design, the second information includes the second identifier, where the second identifier is used to identify the second measurement gap.

[0031] That is, the network device configures the second measurement gap for the terminal device through the second identifier.

[0032] In one possible design, the second information is also used to indicate a first type of terminal device, and the measurement gap configured by the second information is configured by the network device for the first type of terminal device, and the first type of terminal device includes the terminal device to which the method is applied.

[0033] That is to say, the measurement gaps configured for different terminal types are also different. For example, the first type of terminal device is a terminal device configured with LP-WUS, and the terminal device configured with LP-WUS can configure the measurement gap indicated by the second information. On the contrary, there is no terminal device configured with LP-WUS, and there is no need to configure the measurement gap indicated by the second information. In this way, the network device indicates the first type of terminal device through the second information, so that the terminal device knows which type of terminal device the measurement gap indicated by the second information is configured for.

[0034] In one possible design, the first signal includes at least one of the following: a low power channel state information reference signal LP-CSI-RS, a low power reference signal LP-RS, a channel state information reference signal CSI-RS, a reference signal RS, or a synchronization signal.

[0035] In one possible design, the second signal includes at least one of the following: LP-CSI-RS, LP-RS, CSI-RS, RS, or a synchronization signal.

[0036] In a third aspect, a communication method is provided. The execution subject of the method may be a terminal device, which may be a terminal equipment, or a component applied to the terminal equipment (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal equipment. The following description is taken as an example in which the execution subject is the terminal device. The method includes: the terminal device monitors a low-power wake-up signal LP-WUS from a network device through a first link within a first time period of a first search space set group SSSG, and the first time period is a time period in which a physical downlink control channel PDCCH is not monitored through a second link. If the terminal device detects the LP-WUS, it monitors the PDCCH from the network device through the second link within the second SSSG, and the power consumption of the first link is less than the power consumption of the second link.

[0037] For example, the first link is a secondary link, and the second link is a primary link.

[0038] That is to say, the terminal device monitors LP-WUS through the first link during the period when the first SSSG does not monitor PDCCH (i.e., the first period). If LP-WUS is monitored, it means that the network device is very likely to have a service scheduling the terminal device. Accordingly, the terminal device performs SSSG switching to monitor PDCCH within the switched SSSG, and there is no need to perform SSSG switching after monitoring PDCCH at a fixed PDCCH monitoring time. That is, the present application provides a method for triggering SSSG switching, thereby improving the flexibility of SSSG switching, helping to meet service needs and reduce service latency.

[0039] In one possible design, the PDCCH monitoring period in the first SSSG is greater than the PDCCH monitoring period in the second SSSG.

[0040] That is to say, the PDCCH monitoring opportunities in the first SSSG are relatively sparse, while the PDCCH monitoring opportunities in the second SSSG are relatively dense. Since the network device is very likely to have a service scheduling the terminal device, the terminal device works in the second SSSG where the PDCCH monitoring opportunities are denser, which helps the terminal device to successfully monitor the PDCCH and reduce service delay.

[0041] In one possible design, the moment when the terminal device switches from the first SSSG to the second SSSG is determined based on the moment when the LP-WUS is monitored.

[0042] For example, the SSSG switching moment (ie, the moment of switching from the first SSSG to the second SSSG) is the moment of monitoring the LP-WUS.

[0043] In a fourth aspect, a communication method is provided. The execution subject of the method may be a terminal device, which may be a terminal device, or a component applied to the terminal device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal device. The following description is taken as an example that the execution subject is the terminal device. The method includes: the terminal device monitors the physical downlink control channel PDCCH from the network device through a second link in a third search space set group SSSG, and the third SSSG is one of at least two pre-configured SSSGs. Under a second condition, the terminal device monitors a low-power wake-up signal LP-WUS from the network device through a first link. Among them, the second condition includes at least one of the following: the duration of monitoring PDCCH in the third SSSG reaches a first duration; or, receiving indication information from the network device, the indication information includes an SSSG index, and the SSSG index is used to indicate monitoring LP-WUS through the first link. The power consumption of the first link is less than the power consumption of the second link.

[0044] For example, the first link is a secondary link, and the second link is a primary link.

[0045] That is to say, when the terminal device monitors PDCCH through the second link in the third SSSG, if the duration of monitoring PDCCH reaches a certain duration, such as the first duration, it switches to the first link and monitors LP-WUS through the first link. Since the terminal device has most likely completed the service within the first duration, the terminal device can enter the LP-WUS working mode, thereby achieving the effect of saving power consumption while taking into account service needs.

[0046] Alternatively, when the terminal device monitors PDCCH through the second link within the third SSSG, if it receives the indication information of the network device, and the indication information includes the SSSG index, and the SSSG index is used to indicate that the terminal device can switch the first link and monitor LP-WUS through the first link, then the terminal device can enter the LP-WUS working mode according to the indication information, thereby achieving the effect of saving power consumption while taking into account business needs.

[0047] In a possible design, the terminal device monitors the LP-WUS from the network device through the first link under the second condition, including: when the second timer times out, monitoring the LP-WUS from the network device through the first link; the start time of the second timer is the time of switching to the third SSSG, and the running duration of the second timer is the first duration.

[0048] That is, the terminal device may use the second timer to record the duration of monitoring the PDCCH, and use the expiration of the second timer to indicate that the terminal device enters the LP-WUS working mode.

[0049] In one possible design, the SSSG index includes an index of a fourth SSSG, and a PDCCH monitoring period within the fourth SSSG is greater than a PDCCH monitoring period within the third SSSG.

[0050] That is to say, the PDCCH monitoring opportunities in the fourth SSSG are relatively sparse, and the PDCCH monitoring opportunities in the third SSSG are relatively dense. In the present application, the terminal device adopts the LP-WUS working mode to replace the fourth SSSG (i.e., the SSSG with relatively sparse PDCCH monitoring opportunities), thereby achieving a power saving effect.

[0051] In one possible design, the method further includes: if the terminal device detects the LP-WUS, then, within the third SSSG, monitoring a PDCCH from the network device through the second link.

[0052] That is to say, the terminal device monitors LP-WUS through the first link. If LP-WUS is detected, it means that the network device is very likely to have a service scheduling the terminal device. Accordingly, the terminal device monitors PDCCH through the second link again in the third SSSG to monitor the scheduling information from the network device, thereby reducing power consumption and completing service transmission in a timely manner.

[0053] In a fifth aspect, a communication method is provided. The execution subject of the method may be a network device, which may be a network device, or a component applied to the network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the network device. The following description is taken as an example that the execution subject is the network device. The method includes: the network device sends a low power wake-up signal LP-WUS to the terminal device. The network device sends a physical downlink control channel PDCCH to the terminal device, and the moment of sending the PDCCH includes a first moment, and the first moment is one of the periodic moments.

[0054] In one possible design, the first moment is configured by the network device.

[0055] Among them, the technical effects brought about by any design method in the fifth aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here.

[0056] In a sixth aspect, a communication method is provided. The execution subject of the method may be a network device, which may be a network device, or a component applied to the network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the network device. The following description is taken as an example in which the execution subject is the network device. The method includes: the network device sends a first message to the terminal device. Among them, the first information is used to indicate the start of a first timer, and the operating status of the first timer is used to indicate whether to monitor the low power wake-up signal LP-WUS through the first link, and is used to indicate whether to monitor the physical downlink control channel PDCCH through the second link.

[0057] In one possible design, the running time of the first timer is configured by the network device.

[0058] Among them, the technical effects brought about by any design method in the sixth aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here.

[0059] In a seventh aspect, a communication method is provided. The execution subject of the method may be a network device, which may be a network device, or a component applied to the network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the network device functions. The following description is taken as an example that the execution subject is the network device. The method includes: the network device sends a second information to the terminal device. The second information is used to configure a first measurement gap, the first measurement gap is used to indicate a time period when the second link is in a closed state, and the first measurement gap includes a time period when the first link monitors the first signal. The power consumption of the first link is less than the power consumption of the second link.

[0060] In a possible design, the second information includes the first identifier, where the first identifier is used to identify the first measurement gap.

[0061] In one possible design, the second information is also used to configure a second measurement gap, where the second measurement gap is used to indicate a time period during which the first link is in a closed state, and the second measurement gap includes a time period during which the second link monitors a second signal.

[0062] In a possible design, the second information includes the second identifier, where the second identifier is used to identify the second measurement gap.

[0063] In one possible design, the second information is also used to indicate a first type of terminal device, and the measurement gap indicated by the second information is configured for the first type of terminal device, and the first type of terminal device includes the terminal device.

[0064] Among them, the technical effects brought about by any design method in the seventh aspect can refer to the technical effects brought about by different design methods in the second aspect, and will not be repeated here.

[0065] In an eighth aspect, a communication method is provided. The execution subject of the method may be a network device, which may be a network device, or a component applied to the network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the network device functions. The following description is taken as an example in which the execution subject is the network device. The method includes: the network device sends a low power wake-up signal LP-WUS to the terminal device within a first time period of a first search space set group SSSG, and sends a PDCCH to the terminal device within a second SSSG.

[0066] In one possible design, the PDCCH monitoring period in the first SSSG is greater than the PDCCH monitoring period in the second SSSG.

[0067] In one possible design, the time of switching from the first SSSG to the second SSSG is determined according to the sending time of the LP-WUS.

[0068] Among them, the technical effects brought about by any design method in the eighth aspect can refer to the technical effects brought about by different design methods in the third aspect, and will not be repeated here.

[0069] In the ninth aspect, a communication method is provided. The execution subject of the method may be a network device, which may be a network device, or a component applied to the network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the network device. The following description is taken as an example that the execution subject is the network device. The method includes: the network device sends a physical downlink control channel PDCCH to the terminal device in a third search space set group SSSG, and the third SSSG is one of at least two pre-configured SSSGs. The network device sends a low power wake-up signal LP-WUS to the terminal device under a second condition. Wherein, the second condition includes at least one of the following: the duration of sending the PDCCH in the third SSSG reaches a first duration; or, sending indication information to the terminal device, the indication information includes an SSSG index, and the SSSG index is used to instruct the terminal device to monitor LP-WUS.

[0070] In one possible design, the SSSG index includes an index of a fourth SSSG, and a PDCCH monitoring period within the fourth SSSG is greater than a PDCCH monitoring period within the third SSSG.

[0071] In one possible design, after sending the LP-WUS to the terminal device, the method further includes: the network device sending a PDCCH to the terminal device within the third SSSG.

[0072] Among them, the technical effects brought about by any design method in the ninth aspect can refer to the technical effects brought about by different design methods in the fourth aspect, and will not be repeated here.

[0073] In the tenth aspect, a communication device is provided for implementing the above-mentioned various methods. The communication device includes a module, unit, or means corresponding to the implementation method, and the module, unit, or means can be implemented by hardware, software, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the functions.

[0074] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be used to implement the processing function in any of the above aspects and any possible implementations thereof. The transceiver module, which may also be referred to as a transceiver unit, is used to implement the sending and / or receiving functions in any of the above aspects and any possible implementations thereof. The transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0075] In some possible designs, the transceiver module includes a sending module and / or a receiving module, which are respectively used to implement the sending or receiving functions in any of the above aspects and any possible implementation methods thereof.

[0076] In an eleventh aspect, a communication device is provided, comprising: a processor and a memory, wherein the processor and the memory are coupled, and the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, the communication device executes a method as in any one of the above aspects or any possible design of any one of the aspects.

[0077] In a twelfth aspect, a communication device is provided, comprising: a processor; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any one of the aspects.

[0078] Optionally, the communication device further includes a memory, which may be coupled to the processor, or the memory may exist independently of the processor, for example, the memory and the processor are two independent modules. The memory may be located outside the communication device or inside the communication device.

[0079] In a thirteenth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored, and when the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the aspects.

[0080] In a fourteenth aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, enables the communication device to execute the method described in any one of the aspects.

[0081] The communication device provided in any one of the tenth to fourteenth aspects may be the terminal device in the first aspect, or the terminal device in the second aspect, or the terminal device in the third aspect, or the terminal device in the fourth aspect, such as a chip or a chip system; or, the communication device may be the network device in the fifth aspect, or the network device in the sixth aspect, or the network device in the seventh aspect, or the network device in the eighth aspect, or the network device in the ninth aspect, such as a chip or a chip system. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices.

[0082] It can be understood that when the communication device provided in any one of the tenth to fourteenth aspects is a chip, the sending action / function of the communication device can be understood as output information, and the receiving action / function of the communication device can be understood as input information.

[0083] In a fifteenth aspect, a communication system is provided, which includes a terminal device and a network device. The terminal device is used to execute the method in the first aspect or any possible design of the first aspect, and the network device is used to execute the method in the fifth aspect or any possible design of the fifth aspect, or the network device is used to execute the method in the sixth aspect or any possible design of the sixth aspect. Alternatively, the terminal device is used to execute the method in the second aspect or any possible design of the second aspect, and the network device is used to execute the method in the seventh aspect or any possible design of the seventh aspect. Alternatively, the terminal device is used to execute the method in the third aspect or any possible design of the third aspect, and the network device is used to execute the method in the eighth aspect or any possible design of the eighth aspect. Alternatively, the terminal device is used to execute the method in the fourth aspect or any possible design of the fourth aspect, and the network device is used to execute the method in the ninth aspect or any possible design of the ninth aspect.

[0084] Among them, the technical effects brought about by any design method in the tenth aspect to the fifteenth aspect can refer to the technical effects brought about by different design methods in the first aspect to the fourth aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application.

[0086] Figure 2 A working principle diagram of a low-power wake-up signal provided in an embodiment of the present application.

[0087] Figure 3 A working principle diagram of another low-power wake-up signal provided in an embodiment of the present application.

[0088] Figure 4 A schematic diagram of a wireless link failure determination method provided in an embodiment of the present application.

[0089] Figure 5 A schematic diagram of the working status of a search space set provided in an embodiment of the present application.

[0090] Figure 6 A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0091] Figure 7 A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0092] Figure 8 A flow chart of a communication method provided in an embodiment of the present application.

[0093] Figure 9a A flowchart of another communication method provided in an embodiment of the present application.

[0094] Figure 9b A flowchart of another communication method provided in an embodiment of the present application.

[0095] Fig.10a A flowchart of another communication method provided in an embodiment of the present application.

[0096] Fig.10b A flowchart of another communication method provided in an embodiment of the present application.

[0097] Fig.11a A flowchart of another communication method provided in an embodiment of the present application.

[0098] Fig.11b A flowchart of another communication method provided in an embodiment of the present application.

[0099] Fig.12 A schematic diagram of a working state provided for an embodiment of the present application.

[0100] Fig.13a A flowchart of another communication method provided in an embodiment of the present application.

[0101] Fig.13b A flowchart of another communication method provided in an embodiment of the present application.

[0102] Fig.14 A schematic diagram of another wireless link failure determination principle provided in an embodiment of the present application.

[0103] Fig.15a A flowchart of another communication method provided in an embodiment of the present application.

[0104] Fig.15b A flowchart of another communication method provided in an embodiment of the present application.

[0105] Fig.16a A flowchart of another communication method provided in an embodiment of the present application.

[0106] Fig.16b A flowchart of another communication method provided in an embodiment of the present application.

[0107] Fig.17 A flowchart of another communication method provided in an embodiment of the present application.

[0108] Fig.18 A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0109] Fig.19 A flowchart of another communication method provided in an embodiment of the present application.

[0110] Fig. 20 A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0111] Fig.21 A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0112] Fig.22a A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0113] Figure 22b A schematic diagram of the working status of another search space set provided in an embodiment of the present application.

[0114] Fig.23 A schematic diagram of the structure of a communication device provided in this application.

[0115] Fig.24 A schematic diagram of the structure of another communication device provided in the present application.

[0116] Fig.25 A schematic diagram of the structure of another communication device provided in the present application. DETAILED DESCRIPTION

[0117] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0118] In this application, the term "system" may be used interchangeably with "network". This application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0119] In addition, in the embodiments of the present application, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present concepts in a concrete way.

[0120] In the embodiments of the present application, "of", "corresponding, relevant" and "corresponding" may sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings they intend to express are consistent.

[0121] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. The character " / " generally indicates that the objects associated with each other are in an "or" relationship. For example, "A and / or B" can represent the following situations: A exists alone; B exists alone; A and B exist at the same time; wherein A and B can be singular or plural. "At least one of the following" or similar expressions are used to represent any combination of the listed items. For example, "at least one of A, B and / or C" can represent the following situations: A exists alone; B exists alone; C exists alone; A and B exist at the same time; A and C exist at the same time; B and C exist at the same time; A, B and C exist at the same time; wherein A, B, C can be singular or plural.

[0122] In addition, in the present application, various embodiments can be combined with each other, even if these embodiments are directed to different technical problems. For example, the technical solutions given by various implementation methods of the embodiments of the present application can be combined to form a new technical solution according to their internal logical relationship.

[0123] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0124] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system 1000 includes at least one network device (such as Figure 1 110a and 110b) and at least one terminal device (such as Figure 1 120a-120j in FIG. 120b). The terminal device may communicate with the network device in a wireless manner. Optionally, different network devices may communicate with each other. Optionally, different terminal devices may communicate with each other.

[0125] It should be pointed out that Figure 1 It is only a schematic diagram. Although not shown, the communication system 1000 may also include other network devices. For example, the communication system 1000 may also include one or more of a core network (CN) device, a wireless relay device, and a wireless backhaul device, which are not specifically limited here.

[0126] The network device may be connected to the core network device wirelessly or wiredly. The core network device and the network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the network device may be integrated on the same physical device, or the functions of part of the core network device and part of the network device may be integrated on one physical device, which is not specifically limited in the embodiments of the present application.

[0127] Optionally, the network device is a network-side device with wireless transceiver functions. The network device may be a device in a radio access network (RAN) that provides wireless communication functions for a terminal device, referred to as a RAN device. RAN may be an access network in the third generation partnership project (3GPP), for example, 4G, 5G, or a future-oriented 6G network. RAN may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a communication network of two or more of the above networks. RAN equipment may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation base station (next generation nodeB, gNB) in a fifth generation (5G) mobile communication system, a next generation base station in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, a wireless fidelity (WiFi) system, a long range radio (LoRa) system, or an access node in a vehicle networking system. The RAN device may also be a module or unit that completes part of the functions of the base station, for example, it may be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and may also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and may also complete the functions of part or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The CU and DU may be set separately, or may also be included in the same network element, such as the baseband unit (BBU).The RU may be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). In different systems, CU, DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, CU may also be referred to as O-CU (open CU), DU may also be referred to as O-DU, and RU may also be referred to as O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The wireless access network device may be a macro base station (eg. Figure 1 110a), or a micro base station or an indoor station (such as Figure 1 110b), may also be a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For ease of description, the network device is used as the abbreviation of the wireless access network device, and the base station is used as an example of the wireless access network device.

[0128] Optionally, the terminal device accesses the core network through a network device. The terminal device includes a device that provides voice and / or data connectivity to the user, specifically, includes a device that provides voice to the user, or includes a device that provides data connectivity to the user, or includes a device that provides voice and data connectivity to the user. For example, it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a wireless access network, exchange voice or data with the RAN, or exchange voice and data with the RAN. The terminal device may include user equipment (UE), wireless terminal device, mobile terminal device, D2D terminal device, V2X terminal device, machine-to-machine / machine-type communications (M2M / MTC) terminal device, Internet of Things (IoT) terminal device, 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 a mobile phone (or "cellular" phone), a computer with a mobile terminal device, a portable, pocket-sized, handheld, or computer-built-in mobile device, 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.

[0129] 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).

[0130] In the embodiment of the present application, the terminal device may further include a relay. Alternatively, it can be understood that anything that can communicate data with the base station can be regarded as a terminal device.

[0131] In the embodiment of the present application, the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, the device for realizing the function of the terminal is a terminal device as an example for introduction.

[0132] It should be understood that the network device and the terminal device can be fixed or movable. The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0133] The roles of network devices and terminal devices can be relative. For example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal devices 120j that access the wireless access network through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a network device. Therefore, network devices and terminal devices can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having network device functions. Figure 1 120a-120j may be referred to as communication devices having terminal device functions.

[0134] Network devices and terminal devices, network devices and network devices, and terminal devices and terminal devices may communicate through authorized spectrum, unauthorized spectrum, or both; may communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0135] In the embodiments of the present application, the functions of the network device may also be performed by a module (such as a chip) in the network device, or by a control subsystem including the network device function. The control subsystem including the network device function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or by a device including the terminal device function.

[0136] In an embodiment of the present application, the network device sends a downlink signal or downlink information to the terminal device, and the downlink information is carried on a downlink channel; the terminal device sends an uplink signal or uplink information to the network device, and the uplink information is carried on an uplink channel. In order to communicate with the network device, the terminal device needs to establish a wireless connection with the cell controlled by the network device. The cell with which the terminal device has established a wireless connection is called the service cell of the terminal device. When the terminal device communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0137] It should be noted that the solutions in the embodiments of the present application can also be applied to other communication systems, and the corresponding names can also be replaced by the names of corresponding functions in other communication systems.

[0138] In order to facilitate understanding of the embodiments of the present application, the following briefly describes the terms involved in the embodiments of the present application. It should be understood that these descriptions are only for facilitating understanding of the embodiments of the present application and should not constitute any limitation to the present application.

[0139] 1. Radio resource control (RRC) status

[0140] There are three RRC states for a terminal device: RRC connected state, RRC idle state, and RRC inactive state.

[0141] The RRC connection state means that the terminal device has established an RRC connection with the network device, and data can be transmitted through the RRC connection. In addition, the RRC connection state can also be referred to as the connection state. In the embodiment of the present application, "connection state" and "RRC connection state" are the same concept and can be replaced with each other.

[0142] Among them, the RRC idle state means that the terminal device has not established an RRC connection with the network device, and the network device (such as a base station) has not stored the context of the terminal device. If the terminal device needs to enter the RRC connection state from the RRC idle state, it is necessary to initiate the RRC connection establishment process. In addition, the RRC idle state can also be referred to as the idle state. In the embodiments of the present application, "idle state" and "RRC idle state" are the same concept and can be replaced with each other.

[0143] The RRC inactive state means that the terminal device previously entered the RRC connected state at the anchor base station, and then the anchor base station released the RRC connection, but the anchor base station saved the context of the terminal device. If the terminal device needs to enter the RRC connected state again from the RRC inactive state, it is necessary to initiate the RRC connection recovery process (or describe it as the RRC connection re-establishment process) at the currently stationed base station.

[0144] It should be understood that since the terminal device may be in a mobile state, the base station where the terminal device is currently stationed and the anchor base station of the terminal device may be the same base station or different base stations. The RRC recovery process has a shorter delay and smaller signaling overhead than the RRC establishment process. However, the anchor base station needs to save the context of the terminal device, which will occupy the storage overhead of the anchor base station. In addition, the RRC inactive state can also be referred to as the inactive state. In the embodiments of the present application, "inactive state" and "RRC inactive state" are the same concept and can be replaced with each other.

[0145] In the embodiments of the present application, the following five concepts have the same meaning and can be interchanged: inactive state, deactivated state, inactive state, deactivated state, or deactivated state. For example, the RRC inactive state can also be described as the RRC inactive state, referred to as the inactive state.

[0146] 2. Two circuits included in the terminal device:

[0147] The terminal device includes a main circuit and a wake-up circuit, such as Figure 2 shown.

[0148] 2-1. Main circuit of terminal device:

[0149] When the terminal device is in the IDLE state / INACTIVE state, it will determine a paging frame (PF) and the location of a paging occasion (PO) in a PF according to its own identifier (ID) (such as UE ID), and then receive paging in the PO. Whether the terminal device receives paging in the IDLE state / INACTIVE state or receives data in the CONNECTED state, the main circuit in the terminal device can complete these functions.

[0150] The main circuit may also be described in other ways, such as a main receiver or a main link receiver (MR). In the embodiments of the present application, MR is used as an example for introduction, which should not be construed as limiting the embodiments of the present application.

[0151] In the embodiments of the present application, the following descriptions have the same meaning and can be replaced with each other:

[0152] The terminal device operates through the main circuit; the terminal device operates on the main circuit; the terminal device receives or sends a signal through the main circuit; or, the main circuit of the terminal device is in an operating / on state.

[0153] In the embodiment of the present application, the main circuit can also be replaced by the main link. Among them, the main link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity. Taking the 5G NR system as an example, the main link can also be described as the NR main link.

[0154] Accordingly, the following descriptions have the same meaning and can be replaced with each other:

[0155] The terminal device operates through the (NR) main link; the terminal device operates on the (NR) main link; the terminal device receives or sends signals through the (NR) main link; or, the (NR) main link of the terminal device is in an operating / on state.

[0156] In the embodiment of the present application, the working state of the terminal device is introduced by taking the main link as an example, which should not be understood as a limitation of the embodiment of the present application.

[0157] 2-2. Wake-up circuit of terminal device:

[0158] In order to further reduce the power consumption of the terminal device, the terminal device can also receive the signal by using a separate low-power small circuit. The low-power small circuit can be implemented by a separate small circuit or chip with a simple structure and low power consumption. The low-power small circuit can be called a wake-up circuit.

[0159] Among them, the wake-up circuit can also have other descriptions, such as wake-up radio (WUR) circuit, low power circuit, low power wake-up radio (LP-WUR) circuit, wake-up receiver (WUR) module, auxiliary link / low power receiver (LR), etc. In the embodiment of the present application, LR is taken as an example for introduction, which should not be understood as limiting the embodiment of the present application.

[0160] In the embodiments of the present application, the following descriptions have the same meaning and can be replaced with each other:

[0161] The terminal device operates through the wake-up circuit; the terminal device operates on the wake-up circuit; the terminal device monitors or receives a low power wake-up signal (LP-WUS) through the wake-up circuit; or, the wake-up circuit of the terminal device is in an operating state.

[0162] In the embodiment of the present application, the wake-up circuit can also be replaced by an auxiliary link, wherein the auxiliary link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity.

[0163] Accordingly, the following descriptions have the same meaning and can be replaced with each other:

[0164] The terminal device operates through the auxiliary link; the terminal device operates on the auxiliary link; the terminal device monitors or receives LP-WUS through the auxiliary link; or, the auxiliary link of the terminal device is in an operating state.

[0165] In the embodiments of the present application, the following descriptions have the same meaning and can be replaced with each other: monitoring, or detection. In the embodiments of the present application, monitoring is taken as an example for introduction.

[0166] In the embodiment of the present application, the auxiliary link is taken as an example to introduce the working state of the terminal device, which should not be understood as a limitation of the embodiment of the present application.

[0167] For example, Figure 2 A schematic diagram showing a terminal device using a wake-up circuit to receive LP-WUS.

[0168] like Figure 2As shown, for a terminal device in an IDLE state / INACTIVE state, the terminal device monitors LP-WUS through a wake-up circuit: if LP-WUS is not detected through the wake-up circuit, the main circuit is controlled to be in a closed state (or sleep state); if LP-WUS is detected through the wake-up circuit, the main circuit is triggered to wake up, that is, the main circuit is controlled to be in an open state or working state. After the main circuit wakes up, the terminal device can perform a paging reception process.

[0169] For example, Figure 3 A schematic diagram showing a terminal device receiving LP-WUS using an auxiliary link.

[0170] like Figure 3 As shown, for a terminal device in an IDLE state / INACTIVE state, the terminal device monitors LP-WUS through an auxiliary link: if LP-WUS is not detected through the auxiliary link, the main link is controlled to be in a closed state (or a sleep state, or stopped working); if LP-WUS is detected through the auxiliary link, the main link is triggered to wake up, that is, the main link is controlled to be in an open state or a working state. After the main link wakes up, the terminal device can perform a paging reception process.

[0171] It should be understood that Figure 2 or Figure 3 In the example, LP-WUS is mainly used to indicate part of the information related to paging, which should not be understood as a limitation on the embodiments of the present application. Of course, LP-WUS can also be used to indicate all the information related to paging. In this case, after the main link is awakened, random access can be performed.

[0172] 3. Radio link failure (RLF) judgment mechanism

[0173] Currently, in the RLF judgment mechanism, the terminal device measures the downlink wireless link quality based on the cell-specific reference signal. Among them, the cell-specific reference signal includes the channel state information reference signal (CSI-RS), synchronization signal and physical broadcast channel block (SSB), etc. The measurement quantity of the cell-specific reference signal is mapped to the assumed physical downlink control channel (PDCCH) block error rate (BLER), which is compared with the threshold. Among them, the threshold includes Qout and Qin, Qout corresponds to the assumed 10% BLER of PDCCH transmission, Qin corresponds to the assumed 2% BLER of PDCCH transmission, such as Figure 4 shown.

[0174] like Figure 4 As shown, when the terminal device receives a continuous number of Qout (i.e., the measurement result of the cell-specific reference signal exceeds PDCCH BLER 10%), the timer T310 is started until the timer T310 times out. If the terminal device does not receive a continuous number of Qin (i.e., the measurement result of the cell-specific reference signal is lower than PDCCH BLER 2%), it means that RLF occurs, there is a quality problem in the wireless link, and the RRC reconstruction process is triggered, such as Figure 4 On the contrary, during the operation of timer T310, if the terminal device receives a continuous number of Qins (i.e., the measurement result of the cell-specific reference signal is lower than PDCCH BLER2%), the radio link quality has been recovered, no RLF has occurred, and there is no need to trigger the RRC reconstruction process, such as Figure 4 The dashed curve shows .

[0175] In some embodiments, the terminal device performs RLF determination at a certain period.

[0176] 4. Measurement configuration information is sent

[0177] Usually, the measurement configuration information is transmitted through the RRC reconfiguration message and sent from the network device (such as gNodeB) to the terminal device. The terminal device performs measurements according to the measurement configuration information and reports the measurement results to the network device through a measurement report. Among them, the measurement configuration information mainly includes the measurement object, measurement gap, report configuration, trigger quantity, measurement identification (identity, ID), etc. For details, please refer to the relevant technical specifications of 3GPP and will not be repeated here.

[0178] In the embodiment of the present application, the measurement gap can be understood as the time period for the terminal device to leave the current frequency point to measure other frequency points, which is involved in the scenarios of hetero-frequency measurement and hetero-system measurement. In the configuration of the measurement gap, the gap offset (gapOffset) is the offset of the measurement gap repetition period (mgrp), mgl is the measurement gap length, mgrp is the measurement gap repetition period, and mgta is the measurement gap time advance. The GAP duration configured by the above parameters covers the time period from the terminal device leaving the current frequency point to measuring other frequencies.

[0179] In addition, a gap identity (GAPId) is introduced in the R17 standard. The GAPId is used to identify a measurement gap configuration, such as a measurement gap configuration configured according to a terminal device or according to a frequency range (FR).

[0180] 5. Search space set group (SSSG) technology

[0181] In the SSSG switching mechanism, the PDCCH monitoring density in the main bandwidth part (BWP) can be configured with 2 or 3 groups of SSSGs, and the PDCCH monitoring density in different SSSGs is different.

[0182] like Figure 5 As shown, if the PDCCH monitoring density in the main BWP can be configured as 2 groups, such as SSSG0 and SSSG1, the terminal device monitors the PDCCH within the time of the square filled with diagonal lines or the square filled with grid lines, which has the effect of energy saving.

[0183] exist Figure 5In the process, first, the terminal device monitors PDCCH in the search space of SSSG1. When the monitored DCI indicates '0', it can be understood that the DCI indicates the index of SSSG0. After a period of application delay, the terminal device switches to SSSG0 with more frequent monitoring opportunities. Then, the terminal device monitors PDCCH in the search space of SSSG0. When the monitored DCI indicates '1', it can be understood that the DCI indicates the index of SSSG1. After a period of application delay, the terminal device switches back to SSSG1 and monitors PDCCH in the search space of SSSG1.

[0184] like Figure 6 As shown, if the PDCCH monitoring density in the main BWP can be configured as 3 groups, such as SSSG0, SSSG1 and SSSG2, the terminal device monitors the PDCCH within the time of the square filled with diagonal lines, the square filled with grid lines or the square filled with horizontal lines, which has the effect of energy saving.

[0185] exist Figure 6 In the process, first, the terminal device monitors PDCCH in the search space of SSSG1. When the monitored DCI indicates '00', it can be understood that the DCI indicates the index of SSSG0. After a period of application delay, the terminal device switches to SSSG0 with a denser monitoring opportunity. Then, the terminal device monitors PDCCH in the search space of SSSG0. When the monitored DCI indicates '10', it can be understood that the DCI indicates the index of SSSG2. After a period of application delay, the terminal device switches to SSSG2 with a sparser monitoring opportunity than SSSG1. Then, the terminal device monitors PDCCH in the search space of SSSG2. When the monitored DCI indicates '01', it can be understood that the DCI indicates the index of SSSG1. After a period of application delay, the terminal device switches to SSSG1. Then, the terminal device monitors PDCCH in the search space of SSSG1.

[0186] In addition, '11' in DCI is a reserved bit.

[0187] In addition to the above-mentioned bit indication of switching SSSG in DCI, the network device may configure a timer for the terminal device, such as search space switching timer (searchSpaceSwitchTimer). After the timer expires and a switching delay period passes, the terminal device may switch to another SSSG with a different degree of sparseness.

[0188] like Figure 7As shown, if the PDCCH monitoring density in the main BWP can be configured as 2 groups, such as SSSG0 and SSSG1. At the start time of the terminal device SSSG1, the timer (such as the above-mentioned searchSpaceSwitchTimer) is started. After the timer times out, the terminal device switches SSSG, such as switching to SSSG0, and monitors PDCCH in the search space of SSSG0.

[0189] Technical Question 1

[0190] Depend on Figure 2 or Figure 3 It can be seen that for the terminal device configured with LP-WUS, the terminal device switches from the auxiliary link to the main link only when the auxiliary link detects LP-WUS. It can be understood that the terminal device only relies on the LP-WUS detected by the auxiliary link to trigger the main link to work, and receives the scheduling information sent by the network device through the main link. If the channel quality is poor, the auxiliary link cannot detect LP-WUS, causing the terminal device to work in the auxiliary link for a long time. If the network device has a service scheduling for the terminal device, but the terminal device still stays in the auxiliary link, the terminal device cannot receive the scheduling information sent by the network device in time, resulting in unnecessary service delays.

[0191] In view of this, the present application provides a communication method, which can be applied to Figure 1 The communication system shown. In the communication method provided in the embodiment of the present application, the terminal device monitors the LP-WUS from the network device through the first link. Under the first condition, the terminal device monitors the PDCCH from the network device through the second link. The first condition includes at least one of the following: the first moment arrives, the first moment is one of the periodic moments; or, the first link does not monitor the LP-WUS within the first time length. The power consumption of the first link is less than the power consumption of the second link.

[0192] That is to say, when the terminal device monitors LP-WUS through the first link, the terminal device periodically performs link switching. For example, when one of the periodic moments arrives, such as the first moment arrives, it switches to the second link and monitors PDCCH through the second link, thereby reducing the situation where the terminal device stays in the first link for a long time, thereby enabling the terminal device to receive the scheduling information of the network device in a timely manner, which helps to reduce service latency.

[0193] Alternatively, when the terminal device monitors LP-WUS through the first link, if the duration of not monitoring LP-WUS reaches a certain duration, such as the first duration, it switches to the second link and monitors PDCCH through the second link, thereby reducing the situation where the terminal device stays in the first link for a long time, and enables the terminal device to receive the scheduling information of the network device in a timely manner, which helps to reduce service latency and ensure normal service reception behavior on the terminal device side.

[0194] It should be understood that the message names between the devices or the names of the parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not specifically limit this.

[0195] Next, combine Figures 8 to 12 , the communication method proposed in the embodiment of the present application is described in detail. The communication method 800 proposed in the embodiment of the present application includes the following operations:

[0196] S801: The network device sends an LP-WUS to the terminal device. Correspondingly, the terminal device monitors the LP-WUS from the network device through the first link.

[0197] Exemplarily, the network device is introduced as follows:

[0198] The network device may be a network device, or a component applied to a network device, such as a processor, a chip, or a chip system, or a logic module or software that can implement all or part of the functions of the network device, which is not limited in the present application embodiment. Figure 1 The introduction of , no longer repeat.

[0199] Exemplarily, the terminal device is introduced as follows:

[0200] The terminal device may be a terminal device, or a component applied to the terminal device, such as a processor, a chip, or a chip system, or a logic module or software that can realize all or part of the functions of the terminal device, which is not limited in the present application embodiment. Figure 1 The introduction of , no longer repeat.

[0201] In the communication method 800 of the present application, the terminal device can be in an RRC connected state or in an RRC idle state, which is not limited in the embodiments of the present application.

[0202] Exemplarily, the first link is introduced as follows:

[0203] The first link can be an auxiliary link, see Figure 2 or Figure 3 That is, the terminal device monitors the LP-WUS from the network device through the auxiliary link.

[0204] It should be noted that in the embodiment of the present application, the first link is in working state and the second link stops working. For example, during the period when the terminal device monitors the LP-WUS from the network device through the first link, the second link stops monitoring the PDCCH. The second link can be the main link, see Figure 2 or Figure 3 Introduction.

[0205] For the terminal device, the terminal device may detect LP-WUS or may not detect LP-WUS by executing S801. In the case of detecting LP-WUS, the terminal device monitors the PDCCH from the network device through the second link. For details, please refer to the relevant technical introduction, which will not be repeated here. In the case of not detecting LP-WUS, execute S802:

[0206] S802: Under a first condition, the terminal device monitors a PDCCH from the network device through a second link.

[0207] The second link is described as follows: The second link can be the main link, see Figure 2 or Figure 3 That is, the terminal device monitors the PDCCH from the network device through the main link.

[0208] It should be noted that in the embodiment of the present application, the power consumption of the first link is less than that of the second link. The first link is an auxiliary link and the second link is a main link for example, which should not be construed as a limitation on the present application.

[0209] The first condition includes at least one of the following:

[0210] Condition 1, the first moment arrives.

[0211] The first moment is one of the periodic moments. For example, a reference point is set to 0 ms, and the interval between periodic moments is 5 ms. In this case, the periodic moments include 0 ms, 5 ms, 10 ms, 15 ms, 20 ms, ..., 100 ms, etc. The first moment may be one of the above moments, such as 5 ms.

[0212] In condition 1, the periodic time may be configured by the network device or may be predefined, and this application does not limit this.

[0213] Alternatively, in condition 1, the period length corresponding to the periodic moment may be configured by the network device or may be predefined, which is not limited in the embodiments of the present application.

[0214] Under condition 1, it can be understood that the terminal device is the initiator of the behavior, and the terminal device periodically monitors the PDCCH from the network device through the second link at periodic times, such as Figure 9a or Figure 9b shown.

[0215] It is easy to understand that, in the present application, the network device sends the PDCCH to the terminal device. The time when the PDCCH is sent may include the above-mentioned first time.

[0216] Condition 2: the first link does not detect LP-WUS within the first time period.

[0217] In condition 2, the first duration may be configured by the network device or may be predefined, and this embodiment of the present application does not limit this.

[0218] Under condition 2, it can be understood that if the duration of the terminal device not monitoring the LP-WUS continuously reaches the first duration, the terminal device monitors the PDCCH from the network device through the second link, such as Fig.10a or Fig.10b shown.

[0219] It is easy to understand that in the present application, the first condition includes at least one of condition 1 and condition 2. Under the first condition, the terminal device monitors the PDCCH from the network device through the second link, which can be understood as, under condition 1, the terminal device monitors the PDCCH from the network device through the second link, and / or, under condition 2, the terminal device monitors the PDCCH from the network device through the second link.

[0220] In condition 2, as a possible implementation method, the terminal device acts as the initiator of the behavior, that is, the terminal device determines that the duration of not monitoring LP-WUS reaches a first duration, and autonomously switches from the first link to the second link to monitor PDCCH through the second link.

[0221] In condition 2, as another possible implementation, the network device is used as the initiator of the behavior, such as Fig.11a or Fig.11b As shown, the network device further executes S803:

[0222] S803: The network device sends first information to the terminal device. Correspondingly, the terminal device receives the first information from the network device.

[0223] As a possible example, the terminal device receives first information from the network device through the second link.

[0224] The first information is used to instruct to start a first timer.

[0225] Exemplarily, the first timer may be recorded as a LP-WUS working mode timer (LP-WUS mode timer). Of course, the first timer may also have other names, which are not limited in the embodiments of the present application.

[0226] It is easy to understand that, for the terminal device, after receiving the first information, the terminal device starts the first timer in response to the first information.

[0227] When the terminal device executes S803 , S801 includes: during the operation of the first timer, the terminal device monitors the LP-WUS from the network device through the first link.

[0228] It can be understood that, during the running of the first timer, the terminal device continuously monitors the LP-WUS from the network device through the first link.

[0229] When the terminal device executes S803 , S802 includes: when the first timer times out, the terminal device monitors a PDCCH from the network device through the second link.

[0230] The running time of the first timer is the first time length.

[0231] It can be understood that the terminal device continuously monitors the LP-WUS from the network device through the first link, and until the first timer runs out, the terminal device does not monitor the LP-WUS, and the terminal device switches from the first link to the second link, and monitors the PDCCH from the network device through the second link, such as Fig.12 As shown in the box where the letter a is located.

[0232] It is easy to understand that the terminal device continuously monitors the LP-WUS from the network device through the first link. If the terminal device monitors the LP-WUS during the operation of the first timer, the terminal device switches from the first link to the second link and monitors the PDCCH from the network device through the second link. Fig.12 As shown in the box where the letter b is located, please refer to the introduction of related technologies and will not be repeated here.

[0233] Technical Problem 2

[0234] At present, in the RLF judgment mechanism, a terminal device in a connected state needs to frequently perform RLF judgment, such as periodically performing RLF judgment. Furthermore, if the terminal device is a terminal device configured with LP-WUS, the terminal device needs to frequently wake up the main link and perform RLF judgment through the main link, which consumes a lot of power.

[0235] In view of this, the present application provides a communication method, which can be applied to Figure 1In the communication method provided in the embodiment of the present application, the terminal device receives a first signal from the network device through a first link, and determines that RLF occurs according to the signal quality of the first signal. The terminal device sends first information to the network device through a second link, and the first information is used to indicate that RLF occurs, and the power consumption of the first link is less than the power consumption of the second link.

[0236] That is to say, the terminal device determines whether RLF occurs based on the signal quality of the first signal received by the first link. When RLF occurs, the second link is opened, and the occurrence of RLF is reported to the network device through the second link. On the contrary, when RLF does not occur, there is no need to open the second link, thereby reducing the frequency of opening the second link. Since the power consumption of the first link is less than that of the second link, compared to frequently opening the second link and determining whether RLF occurs based on the signal quality of the signal received by the second link, the present application adopts a first link with lower power consumption to receive the first signal, and determines whether RLF occurs based on the signal quality of the first signal, thereby achieving the effect of reducing power consumption.

[0237] It should be understood that the message names between the devices or the names of the parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not specifically limit this.

[0238] Next, combine Figures 13a to 15b , the communication method proposed in the embodiment of the present application is described in detail. The communication method 1300 proposed in the embodiment of the present application includes the following operations:

[0239] S1301: The network device sends a signal to the terminal device. Correspondingly, the terminal device receives the signal from the network device.

[0240] For example, the terminal device receives a signal from the network device through the first link. The signal received by the first link is recorded as the first signal. Fig.13a or Fig.13b shown.

[0241] Exemplarily, the network device can refer to the introduction of S801, which will not be described in detail.

[0242] Exemplarily, the terminal device and the first link can refer to the introduction of S801, which will not be described in detail.

[0243] In the communication method 1300 of the present application, the terminal device may be in an RRC connected state.

[0244] Exemplarily, the first signal can be used to determine the quality of the wireless channel. For example, the first signal includes at least one of the following: a low power channel state information reference signal (LP-CSI-RS), a low power reference signal (LP-RS), a channel state information reference signal (CSI-RS), a reference signal (RS), or a synchronization signal. Among them, the synchronization signal can be SSB. Of course, the first signal can also be other signals, and the embodiment of the present application does not limit the first signal.

[0245] It should be noted that in the embodiment of the present application, the first link is in operation and the second link stops operating. For example, during the period when the terminal device receives the first signal from the network device through the first link, the second link stops operating, such as stopping monitoring the PDCCH.

[0246] For the terminal device, after receiving the first signal, the terminal device executes S1302:

[0247] S1302: The terminal device determines whether RLF occurs according to the signal quality of the first signal.

[0248] Exemplarily, the signal quality of the first signal may include at least one of the following: a reference signal received power (RSRP) of the first signal, a received signal strength indicator (RSSI) of the first signal, or a reference signal received quality (RSRQ) of the first signal.

[0249] Exemplarily, the signal quality of the first signal includes: the signal quality of a portion of the first signal. The portion of the first signal includes at least one of the following: LP-CSI-RS, LP-RS, etc. It can be understood that the terminal device determines whether RLF occurs based on the signal quality of the portion of the first signal.

[0250] Exemplarily, the implementation process of S1302 includes: the terminal device determines whether RLF occurs according to the signal quality of the first signal and the first threshold.

[0251] by Fig.14For example, the signal quality of the first signal is mapped to the assumed PDCCH block error rate (PDCCH BLER), which is compared with the first threshold. The first threshold includes Q1 and Q2, Q1 corresponds to the assumed x% BLER of PDCCH transmission, Q2 corresponds to the assumed y% BLER of PDCCH transmission, x>0, y>0, such as Fig.14 shown.

[0252] exist Fig.14 In the example, when the terminal device receives a continuous number of Q1 (i.e., the signal quality of the first signal exceeds PDCCH BLER x%), the timer T310 is started. If the terminal device does not receive a continuous number of Q2 (i.e., the signal quality of the first signal is lower than PDCCH BLER y%) until the timer T310 times out, it means that RLF occurs. Fig.14 On the contrary, during the operation of timer T310, if the terminal device receives a continuous number of Q2 (ie, the signal quality of the first signal is lower than PDCCH BLER y%), the radio link quality has recovered and no RLF occurs, as shown in FIG. Fig.14 The dashed curve shows .

[0253] In the embodiment of the present application, the first threshold may be predefined or configured by the network device. For example, before the terminal device executes S1302, the following operation is also performed: the network device sends the first information to the terminal device. Accordingly, the terminal device receives the first information from the network device.

[0254] As a possible example, the terminal device receives first information from the network device through the second link.

[0255] The first information is used to determine the first threshold.

[0256] For example, the first information includes a first threshold, such as the first information includes a threshold Q1 (such as the above x% BLER) and a threshold Q2 (such as the above y% BLER).

[0257] For another example, the first information includes a first offset. The first offset is an offset between a first threshold and a second threshold, and the second threshold is used by the terminal device to determine whether RLF occurs according to the signal quality of the second signal. In this case, the terminal device can determine the second threshold according to the first threshold and the first offset.

[0258] by Fig.14For example, the second threshold includes a threshold Qout (such as the above 10% BLER) and a threshold Qin (such as the above 2% BLER). The first offset is a. Accordingly, the threshold Q1 in the first threshold can be understood as: x% = (10±a)%. The threshold Q2 in the first threshold can be understood as: y% = (2±a)%.

[0259] Exemplarily, the first information is carried in an RRC message, or the first information is carried in other messages, which is not limited in the embodiments of the present application.

[0260] It should be pointed out that in the present application, the first threshold and the second threshold are different thresholds. The first threshold is used for the first link to determine whether RLF occurs. The second threshold is used for the second link to determine whether RLF occurs. Since the measurement capabilities of the first link and the second link are different, the first link and the second link determine whether RLF occurs based on different thresholds. As a possible example, the present application directly introduces a new threshold suitable for the first link (i.e., the auxiliary link) to determine whether RLF occurs, namely, the first threshold. For details, see the introduction of 'the first information includes the first threshold', which will not be repeated. As a possible example, the present application introduces a first offset, so that the measurement result of the first link (i.e., the auxiliary link) is equivalently mapped to the measurement result of the second link (i.e., the main link). For details, see the introduction of 'the first information includes the first offset', which will not be repeated.

[0261] For the terminal device, in the case of RLF, the terminal device executes S1303; otherwise, in the case of no RLF, the terminal device does not execute S1303 and can continue to monitor the first signal from the network device through the first link. S1303 is described as follows:

[0262] S1303: The terminal device sends first information to the network device via the second link. Correspondingly, the network device receives the first information from the terminal device.

[0263] The first information is used to indicate the occurrence of RLF. It can be understood that the terminal device reports the occurrence of RLF to the network device through the second link, so that the network device can timely learn the quality of the wireless channel, effectively reducing the problem of resource waste caused by the network device repeatedly sending scheduling information without knowing the poor quality of the wireless channel.

[0264] The second link is described as follows: The second link can be the main link, see Figure 2 or Figure 3 That is, the terminal device sends the first information to the network device through the main link.

[0265] It should be noted that in the embodiment of the present application, the power consumption of the first link is less than that of the second link. The first link is an auxiliary link and the second link is a main link for example, which should not be construed as a limitation on the present application.

[0266] In some embodiments, Fig.15a or Fig.15b As shown, the terminal device executes S1302. After determining that RLF occurs, before executing S1303, the terminal device further performs the following operations:

[0267] S1304: The network device sends a signal to the terminal device. Correspondingly, the terminal device receives the signal from the network device.

[0268] For example, the terminal device receives a signal from the network device through the second link. The signal received by the second link is recorded as the second signal, such as Fig.15a or Fig.15b shown.

[0269] Exemplarily, the second signal may be used to determine the quality of the wireless channel. For example, the second signal includes at least one of the following: LP-CSI-RS, LP-RS, CSI-RS, RS, or a synchronization signal. Among them, the synchronization signal may be SSB. Of course, the second signal may also be other signals, and the embodiment of the present application does not limit the second signal.

[0270] S1305: The terminal device determines whether RLF occurs according to the signal quality of the second signal.

[0271] Exemplarily, the signal quality of the second signal may include at least one of the following: RSRP of the second signal, RSSI of the second signal, or RSRQ of the second signal.

[0272] Exemplarily, the signal quality of the second signal includes: the signal quality of a portion of the second signal. The portion of the second signal includes at least one of the following: CSI-RS, RS, or synchronization signal, etc. It can be understood that the terminal device determines whether RLF occurs based on the signal quality of the portion of the second signal.

[0273] Exemplarily, the terminal device determines whether RLF occurs according to the signal quality of the second signal and the second threshold.

[0274] by Figure 4 For example, the signal quality of the second signal is mapped to an assumed PDCCH block error rate (PDCCH BLER), which is compared with a second threshold, wherein the second threshold includes Qout and Qin, Qout corresponds to a 10% BLER of the assumed PDCCH transmission, and Qin corresponds to a 2% BLER of the assumed PDCCH transmission.

[0275] exist Figure 4 In the example, when the terminal device receives a continuous number of Qout (i.e., the signal quality of the second signal exceeds 10% of the PDCCH BLER), the timer T310 is started. If the terminal device does not receive a continuous number of Qin (i.e., the signal quality of the second signal is lower than 2% of the PDCCH BLER) until the timer T310 times out, it means that RLF occurs. Figure 4 On the contrary, during the operation of timer T310, if the terminal device receives a continuous number of Qins (ie, the signal quality of the second signal is lower than PDCCH BLER 2%), the radio link quality has recovered and no RLF occurs, as shown in FIG. Figure 4 The dashed curve shows .

[0276] For the terminal device, if it is still determined that RLF occurs by executing S1305, the terminal device executes S1303; conversely, if it is determined that RLF does not occur by executing S1305, the terminal device does not execute S1303, thereby reducing misjudgment.

[0277] In some embodiments, after receiving the first information, the network device performs an RRC reconstruction process according to the first information to restore the quality of the wireless channel. Optionally, when the quality of the wireless channel returns to normal, the terminal device sends information to the network device to indicate that the quality of the wireless channel has been restored, so that the network device can be informed of the wireless channel status in a timely manner.

[0278] Technical Question 3

[0279] Currently, the main link and the auxiliary link of the terminal device may share some hardware, and accordingly, the main link and the auxiliary link may not work at the same time. In this case, how to flexibly configure the measurement time of the main link and the auxiliary link is an urgent problem to be solved.

[0280] In view of this, the present application provides a communication method, which can be applied to Figure 1 In the communication method provided in the embodiment of the present application, the terminal device receives second information from the network device. The second information is used to configure a first measurement gap, the first measurement gap is used to indicate a time period when the second link is in a closed state, and the first measurement gap includes a time period when the first link monitors the first signal.

[0281] That is to say, an embodiment of the present application provides a configuration method for the first measurement gap. During the time period corresponding to the first measurement gap, the first link of the terminal device is turned on and the second link is turned off. Therefore, in a scenario where the first link and the second link cannot work at the same time, the time period when the second link is turned off covers the time period when the first link is turned on to perform measurement, thereby flexibly and reasonably configuring the measurement time of the first link and the second link.

[0282] It should be understood that the message names between the devices or the names of the parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not specifically limit this.

[0283] Next, combine Fig.16a , the communication method proposed in the embodiment of the present application is described in detail. The communication method 1600 proposed in the embodiment of the present application includes the following operations:

[0284] S1601: The network device sends second information to the terminal device. Correspondingly, the terminal device receives the second information from the network device.

[0285] Exemplarily, the network device and the terminal device can refer to the introduction of S801, which will not be described in detail.

[0286] In the communication method 1600 of the present application, the terminal device may be in an RRC connected state.

[0287] As a possible example, the terminal device receives the second information from the network device through the second link.

[0288] The second information is used to configure the first measurement gap. The first measurement gap is used to indicate a time period during which the second link is in a closed state. The first measurement gap includes a time period during which the first link monitors the first signal. Fig.16b It can be understood that the first measurement gap covers the time period during which the first link monitors the first signal.

[0289] Exemplarily, the first link may refer to the introduction of S801, and the second link may refer to the introduction of S802, which will not be described in detail.

[0290] Exemplarily, the first measurement gap includes the 5th to 8th subframes in each radio frame.

[0291] Exemplarily, the second information includes the following parameters: gapOffset, mgl, mgrp, mgta, etc. For details, see the introduction of the measurement configuration information. The above parameters add new values ​​so that the network device configures the first measurement gap for the terminal device.

[0292] It is easy to understand that the first measurement gap may include one or more time periods. Each time period in the first measurement gap may be a time period in which the first link monitors the first signal and a time period in which the second link is in a closed state.

[0293] It is easy to understand that in the embodiment of the present application, the first measurement gap may also have other names, such as the first window, the first interruption, etc. In the embodiment of the present application, the first measurement gap is taken as an example for introduction, which should not be understood as a limitation on the embodiment of the present application.

[0294] It is easy to understand that the first signal may include at least one of the following: LP-CSI-RS, LP-RS, CSI-RS, RS, or synchronization signal, etc., please refer to the introduction of S1301, which will not be repeated here. In some embodiments, the first signal can be used for radio link monitoring (radio link monitoring, RLM) / radio resource management (radio resource management, RRM) measurement, please refer to the introduction of S1302, which will not be repeated here. In other embodiments, the first signal can be used for other measurements, such as cell selection or cell reselection, etc., and the embodiments of the present application do not limit the use of the first signal.

[0295] Exemplarily, the second information is carried in an RRC message, or the second information is carried in other messages, which is not limited in the embodiments of the present application.

[0296] Exemplarily, different measurement gaps correspond to different identifiers. As a possible implementation, the second information includes a first identifier, and the first identifier is used to identify the first measurement gap. For example, the first identifier is the MeasGapId corresponding to the first measurement gap. In this case, the network device configures the first measurement gap for the terminal device through the first identifier. Accordingly, the terminal device can determine that the measurement gap configured by the network device is the above-mentioned first measurement gap based on the received first identifier.

[0297] In some embodiments, the second information is also used to configure a second measurement gap. The second measurement gap is used to indicate a time period during which the first link is in a closed state, and the second measurement gap includes a time period during which the second link monitors the second signal, such as Fig.16b As shown. It can be understood that the second measurement gap covers the time period when the second link monitors the second signal. In other words, the present application can make the time period when the first link is closed cover the time period when the second link is turned on to perform measurement in a scenario where the first link and the second link cannot work at the same time, thereby flexibly and reasonably configuring the measurement time of the first link and the second link.

[0298] For example, the second measurement gap includes the 1st to 4th subframes in each radio frame.

[0299] It is easy to understand that the second measurement gap may include one or more time periods. Each time period in the second measurement gap may be a time period during which the second link monitors the second signal and a time period during which the first link is closed.

[0300] It is easy to understand that in the embodiment of the present application, the second measurement gap may also have other names, such as the second window, the second interruption, etc. In the embodiment of the present application, the second measurement gap is taken as an example for introduction, which should not be understood as a limitation on the embodiment of the present application.

[0301] Exemplarily, different measurement gaps correspond to different identifiers. As a possible implementation, the second information includes a second identifier, and the second identifier is used to identify the second measurement gap. For example, the second identifier is the MeasGapId corresponding to the second measurement gap. In this case, the network device configures the second measurement gap for the terminal device through the second identifier. Accordingly, the terminal device can determine that the measurement gap configured by the network device is the above-mentioned second measurement gap based on the received second identifier.

[0302] In some embodiments, the second information is also used to indicate a first type of terminal device. The measurement gap configured by the second information is configured by the network device for the first type of terminal device, and the first type of terminal device includes the above-mentioned terminal device.

[0303] Exemplarily, the first type of terminal device may be a LP-WUS configured terminal device.

[0304] Exemplarily, the second information may include a measurement gap identification information element (MeasGapId informationelement), which may reuse MeasGapId-r17 and add a new indication bit. Alternatively, the second information may include new indication information, such as MeasGapId-r18 or MeasGapId-LPWUS, etc., which is not limited in the embodiments of the present application.

[0305] That is to say, the measurement gaps configured for different types of terminal devices are also different. For example, for a terminal device configured with LP-WUS, that is, the first type of terminal device, the network device can configure the first measurement gap and / or the second measurement gap. Conversely, for a terminal device without the above LP-WUS configuration, the network device does not need to configure the above measurement gap.

[0306] Technical Question 4

[0307] At present, the relevant technologies do not provide how to combine the LP-WUS mechanism with the SSSG technology, and it is impossible to achieve the effect of taking into account business needs and reducing power consumption.

[0308] In view of this, the present application provides a communication method, which can be applied to Figure 1 The communication system shown. In the communication method provided in the embodiment of the present application, the terminal device monitors the LP-WUS from the network device through the first link in the first time period of the first SSSG, and the first time period is a time period in which the PDCCH is not monitored through the second link. If the terminal device monitors the LP-WUS, it monitors the PDCCH from the network device through the second link in the second SSSG. The power consumption of the first link is less than the power consumption of the second link.

[0309] That is to say, the terminal device monitors LP-WUS through the first link during the period when the PDCCH is not monitored in the first SSSG (i.e., the first period mentioned above). If LP-WUS is monitored, it means that the network device is very likely to have a service scheduling for the terminal device. Accordingly, the terminal device performs SSSG switching to monitor PDCCH in the switched SSSG, and there is no need to perform SSSG switching after monitoring PDCCH at a fixed PDCCH monitoring time, which provides a way to trigger SSSG switching, thereby improving the flexibility of SSSG switching, helping to meet service needs and reduce service latency.

[0310] For example, in some scenarios, for example, the monitoring timing of PDCCH is after LP-WUS. According to relevant technologies, the terminal device must monitor PDCCH at the PDCCH monitoring timing after LP-WUS, and only perform SSSG switching after monitoring PDCCH. The terminal device of the present application can perform SSSG switching after monitoring LP-WUS. Therefore, the present application can enable the terminal device to perform SSSG switching as early as possible, execute services in the SSSG after switching, meet the needs of service transmission, and reduce service delays while saving energy.

[0311] It should be understood that the message names between the devices or the names of the parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not specifically limit this.

[0312] Next, combine Figure 17 to Figure 18 , the communication method proposed in the embodiment of the present application is described in detail. The communication method 1700 proposed in the embodiment of the present application includes the following operations:

[0313] S1701: The network device sends an LP-WUS to the terminal device in a first time period of the first SSSG. Correspondingly, the terminal device monitors the LP-WUS from the network device through the first link in the first time period of the first SSSG.

[0314] Exemplarily, the network device and the terminal device can refer to the introduction of S801, which will not be described in detail.

[0315] In the communication method 1700 of the present application, the terminal device may be in an RRC connected state.

[0316] Exemplarily, the first link may be an auxiliary link, as described in S801 for details, which will not be described in detail.

[0317] Exemplarily, the second link may be a main link, and the power consumption of the first link is less than the power consumption of the second link. For details, see the introduction of S802 and will not be described in detail.

[0318] The first period is introduced as follows:

[0319] For the terminal device, the first period is a time period during which the PDCCH is not monitored via the second link.

[0320] In the present application, the first period may include one or more time periods, such as a time period in the first SSSG excluding the PDCCH monitoring opportunity.

[0321] by Fig.18 For example, the first SSSG is SSSG1. In SSSG1, the period during which the terminal device monitors PDCCH is shown in the box filled with diagonal lines. In SSSG1, the period during which the terminal device monitors LP-WUS belongs to the first period, as shown in the box filled with vertical lines.

[0322] For the terminal device, if the terminal device does not detect LP-WUS, it can continue to monitor LP-WUS in the time period when it does not need to monitor PDCCH in the first SSSG. On the contrary, if the terminal device detects LP-WUS, it executes S1702:

[0323] S1702: The network device sends a PDCCH to the terminal device. Correspondingly, the terminal device monitors the PDCCH from the network device through the second link in the second SSSG.

[0324] It can be understood that the monitored LP-WUS implicitly instructs the terminal device to perform SSSG switching.

[0325] by Fig.18 For example, the first SSSG is SSSG1, and the second SSSG is SSSG0. In the first period of SSSG1, the terminal device detects LP-WUS, and then the terminal device switches from SSSG1 to SSSG0. In SSSG0, the terminal device monitors PDCCH. Among them, the PDCCH monitoring timing of SSSG0 is shown as the box filled with grid lines.

[0326] Optionally, the PDCCH monitoring period in the first SSSG is greater than the PDCCH monitoring period in the second SSSG.

[0327] by Fig.18 For example, the first SSSG is SSSG1, and the second SSSG is SSSG0. In SSSG1, the PDCCH monitoring opportunity is shown as a box filled with diagonal lines. In SSSG0, the PDCCH monitoring opportunity is shown as a box filled with grid lines.

[0328] That is to say, the PDCCH monitoring opportunities in the first SSSG are relatively sparse, while the PDCCH monitoring opportunities in the second SSSG are relatively dense. Since the network device is very likely to have services scheduling the terminal device, the terminal device works in the second SSSG with more dense PDCCH monitoring opportunities, which helps the terminal device to successfully monitor the PDCCH and reduce service delays.

[0329] Optionally, the moment when the terminal device switches from the first SSSG to the second SSSG is determined according to the moment when the LP-WUS is detected. For example, when the terminal device detects the LP-WUS, the SSSG switching is performed, and after a period of application delay, the terminal device switches from the first SSSG to the second SSSG.

[0330] by Fig.18 For example, in SSSG1, when the terminal device detects LP-WUS, it can execute SSSG switching without waiting until the PDCCH monitoring opportunity in the thick line box filled with diagonal lines detects PDCCH to execute SSSG switching, which helps to reduce service delay.

[0331] In some embodiments, as a possible alternative, the terminal device executes S1701, that is, in the first time period of the first SSSG, monitors the LP-WUS from the network device through the first link. If the terminal device detects LP-WUS, it does not perform SSSG switching, but terminates SSSG and resumes normal monitoring of PDCCH. It can be understood that if the terminal device detects LP-WUS, it jumps out of the SSSG technology and can monitor PDCCH all the time, which helps to successfully monitor the scheduling information of the network device.

[0332] The present application also provides another communication method, which can be applied to Figure 1The communication system shown. In the communication method provided in an embodiment of the present application, the terminal device monitors the PDCCH from the network device through the second link in a third SSSG, and the third SSSG is one of at least two pre-configured SSSGs. Under the second condition, the terminal device monitors the LP-WUS from the network device through the first link. The second condition includes at least one of the following: the duration of monitoring the PDCCH in the third SSSG reaches the first duration; or, indication information is received from the network device, the indication information includes an SSSG index, and the SSSG index is used to indicate monitoring the LP-WUS through the first link. The power consumption of the first link is less than the power consumption of the second link.

[0333] That is to say, when the terminal device monitors PDCCH through the second link in the third SSSG, if the duration of monitoring PDCCH reaches a certain duration, such as the first duration, it switches to the first link and monitors LP-WUS through the first link. Since the terminal device has most likely completed the service within the first duration, the terminal device can enter the LP-WUS working mode, thereby achieving the effect of saving power consumption while taking into account service needs.

[0334] Alternatively, when the terminal device monitors PDCCH through the second link in the third SSSG, if it receives indication information from the network device, and the indication information includes an SSSG index, and the SSSG index is used to indicate that the terminal device can switch to the first link and monitor LP-WUS through the first link, then the terminal device can enter the LP-WUS working mode according to the indication information, thereby achieving the effect of saving power consumption while taking into account business needs.

[0335] It should be understood that the message names between the devices or the names of the parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not specifically limit this.

[0336] Next, combine Figure 19 to Figure 22b , the communication method proposed in the embodiment of the present application is described in detail. The communication method 1900 proposed in the embodiment of the present application includes the following operations:

[0337] S1901: The network device sends a PDCCH to the terminal device. Correspondingly, the terminal device monitors the PDCCH from the network device through the second link in the third SSSG.

[0338] The third SSSG is one of the at least two pre-configured SSSGs.

[0339] Exemplarily, the network device and the terminal device can refer to the introduction of S801, which will not be described in detail.

[0340] In the communication method 1900 of the present application, the terminal device may be in an RRC connected state.

[0341] Exemplarily, the second link may be a main link, as described in S802 for details, which will not be described in detail.

[0342] by Fig. 20 , Fig.21 , Fig.22a or Figure 22b For example, the third SSSG is SSSG0. In SSSG0, the PDCCH monitoring opportunities are shown as the boxes filled with grid lines. The terminal device monitors the PDCCH on the resources corresponding to the boxes filled with grid lines.

[0343] S1902: The network device sends an LP-WUS to the terminal device. Accordingly, the terminal device monitors the LP-WUS from the network device through the first link under the second condition.

[0344] Exemplarily, the first link may be an auxiliary link, and the power consumption of the first link is less than the power consumption of the second link. For details, see the introduction of S801 and will not be repeated here.

[0345] The second condition includes at least one of the following:

[0346] Condition 3: the duration of monitoring the PDCCH in the third SSSG reaches the first duration.

[0347] In condition 3, if the duration for which the terminal device monitors the PDCCH in the third SSSG reaches the first duration, the service is likely to have been completed. Accordingly, the terminal device can enter the LP-WUS mode, thereby achieving a power saving effect.

[0348] Under condition 3, as a possible example, S1902 includes: when the second timer times out, the terminal device monitors the LP-WUS from the network device through the first link.

[0349] Among them, the start time of the second timer is the time of switching to the third SSSG, and the running duration of the second timer is the first duration.

[0350] It can be understood that by defining the second timer, the second timer times out and indicates that the terminal device enters the LP-WUS working mode.

[0351] by Fig. 20For example, the third SSSG is SSSG0. When the terminal device switches from other SSSGs, such as SSSG1, to SSSG0, the second timer is started. During the operation of the second timer, the terminal device monitors PDCCH at the PDCCH monitoring opportunity of SSSG0 until the second timer times out. Among them, SSSG0 and SSSG1 are different SSSGs. When the second timer times out, it means that the duration of the terminal device monitoring PDCCH in the third SSSG reaches the first duration, and the service is likely to be completed. Accordingly, the terminal device enters the LP-WUS mode and monitors LP-WUS through the first link, thereby achieving a power saving effect.

[0352] Condition 4: receiving instruction information from the network device.

[0353] The indication information includes an SSSG index, and the SSSG index is used to indicate monitoring of the LP-WUS through the first link.

[0354] As a possible alternative description, the SSSG index is used to indicate the start of the first link, or the SSSG index is used to indicate the start of the LP-WUS working mode, or the SSSG index is used to indicate the start of monitoring the LP-WUS.

[0355] It is easy to understand that in condition 4, the terminal device starts the first link, which means that the terminal device needs to close the second link. It can be understood that the SSSG index implicitly indicates closing the second link, or the SSSG index implicitly indicates stopping monitoring the PDCCH.

[0356] In condition 4, by multiplexing the SSSG index, the SSSG index is used to instruct the terminal device to start the first link and access the LP-WUS working mode, thereby achieving a power saving effect.

[0357] Under condition 4, as a possible example, the SSSG index includes the index of the fourth SSSG. The PDCCH monitoring period in the fourth SSSG is greater than the PDCCH monitoring period in the third SSSG. In this case, if Figure 5 or Figure 6 According to the introduction, the terminal device performs SSSG switching and switches to the fourth SSSG indicated by the SSSG index. In the present application, the LP-WUS working mode is used to replace the SSSG with relatively sparse PDCCH monitoring opportunities, thereby achieving a power saving effect.

[0358] For example, Fig.21 For example, the SSSG index is 1, and accordingly, the fourth SSSG is SSSG1. Fig.21 In SSSG0, the PDCCH monitoring opportunities are relatively dense, while in SSSG1, the PDCCH monitoring opportunities are relatively sparse.

[0359] In this case, if the terminal device is not configured with the LP-WUS mechanism, the terminal device switches from SSSG0 to SSSG1, such as Figure 5 shown.

[0360] In the present application, the terminal device is configured with the LP-WUS mechanism, and the terminal device adopts the LP-WUS working mode to replace the SSSG1 with relatively sparse PDCCH monitoring opportunities, that is, the terminal device does not switch to SSSG1, but enters the LP-WUS mode, such as Fig.21 shown.

[0361] For example, Fig.22a Taking the dashed box where "Case 1" is located as an example, the SSSG index is 10, and accordingly, the fourth SSSG is SSSG2. The PDCCH monitoring opportunities in SSSG0 are relatively dense, and the PDCCH monitoring opportunities in SSSG2 are relatively sparse.

[0362] In this case, if the terminal device is not configured with the LP-WUS mechanism, the terminal device switches from SSSG0 to SSSG2, such as Figure 6 shown.

[0363] In the present application, the terminal device is configured with the LP-WUS mechanism, and the terminal device adopts the LP-WUS working mode to replace the SSSG2 with relatively sparse PDCCH monitoring opportunities, that is, the terminal device does not switch to SSSG2, but enters the LP-WUS mode, such as Fig.22a The dashed box where 'Case 1' is located is shown in the figure.

[0364] For example, Fig.22a Taking the dashed box where "Case 2" is located as an example, the SSSG index is 01, and accordingly, the fourth SSSG is SSSG1. The PDCCH monitoring opportunities in SSSG0 are relatively dense, and the PDCCH monitoring opportunities in SSSG1 are relatively sparse.

[0365] In this case, if the terminal device is not configured with the LP-WUS mechanism, the terminal device switches to SSSG1, such as Figure 6 shown.

[0366] In the present application, the terminal device is configured with the LP-WUS mechanism, and the terminal device adopts the LP-WUS working mode to replace the SSSG1 with relatively sparse PDCCH monitoring opportunities, that is, the terminal device does not switch to SSSG1, but enters the LP-WUS mode, such as Fig.22a The dashed box where 'Case 2' is located is shown in the figure.

[0367] As a possible alternative, the indication information does not include the above-mentioned SSSG index, but includes a reserved bit. For example, when the PDCCH monitoring density is configured as 3 groups, the index of SSSG0 corresponds to bit '00', the index of SSSG1 corresponds to bit '01', the index of SSSG2 corresponds to bit '10', and bit '11' is a reserved bit. In this case, the indication information includes the reserved bit '11'. The indication information carrying the reserved bit is used to instruct the first link to monitor LP-WUS. The terminal device monitors LP-WUS through the first link according to the indication information and enters the LP-WUS working mode, which will not be repeated.

[0368] For example, Figure 22b Taking the dashed box where 'Case 1' or 'Case 2' is located as an example, the indication information includes the reserved bit '11'. The terminal device monitors the PDCCH in SSSG0. The terminal device receives the indication information carrying the reserved bit '11' and enters the LP-WUS mode according to the indication information carrying the reserved bit '11'. Figure 22b The dashed box where 'Case 1' or 'Case 2' is located is shown.

[0369] It should be pointed out that in the related art, the use of the reserved bit '11' is not shown, for example, the processing operation performed by the terminal device according to the reserved bit '11' is not shown, that is, SSSG switching is not involved. It can be understood that a use method of the reserved bit '11' is given in this application, that is, the indication information carrying the reserved bit is used to instruct the first link to monitor LP-WUS, and the terminal device can enter the LP-WUS mode according to the indication information carrying the reserved bit '11', thereby achieving a power saving effect.

[0370] It should be noted that, in the present application, the second condition includes condition 3 and / or condition 4. Under the second condition, the terminal device monitors the LP-WUS from the network device through the first link. It can be understood that the terminal device monitors the LP-WUS from the network device through the first link under condition 3, and / or the terminal device monitors the LP-WUS from the network device through the first link under condition 4.

[0371] It should be noted that in the present application, while the terminal device monitors the LP-WUS from the network device through the first link, the second link stops working, such as there is no need to monitor the PDCCH from the network device through the second link.

[0372] In some embodiments, if the terminal device detects the LP-WUS, then the terminal device monitors the PDCCH from the network device through the second link in the third SSSG.

[0373] by Fig.22a'Case 3' (or Figure 22b Taking the dashed box in 'Case 3') as an example, the third SSSG is SSSG0. When the terminal device is in LP-WUS mode, if the terminal device detects LP-WUS, the terminal device switches to SSSG0 and monitors PDCCH in the search space of SSSG0.

[0374] That is to say, the terminal device monitors LP-WUS through the first link. If LP-WUS is detected, it means that the network device is very likely to schedule services for the terminal device. Accordingly, the terminal device monitors PDCCH through the second link again in the third SSSG to monitor scheduling information from the network device, thereby reducing power consumption and completing service transmission in a timely manner.

[0375] In some embodiments, as a possible alternative, if the terminal device detects LP-WUS, it does not switch from the LP-WUS mode to the third SSSG mentioned above, but terminates the SSSG and resumes normal monitoring of the PDCCH. It can be understood that if the terminal device detects LP-WUS, it will jump out of the SSSG technology and can always monitor the PDCCH, which helps to successfully monitor the scheduling information of the network device.

[0376] It is understandable that in each of the above embodiments, the methods and / or steps implemented by the terminal device may also be implemented by components (such as processors, chips, chip systems, circuits, logic modules, or software) that can be used in the terminal device; the methods and / or steps implemented by the network device may also be implemented by components (such as processors, chips, chip systems, circuits, logic modules, or software) that can be used in the network device. Among them, the chip system may be composed of chips, or the chip system may include chips and other discrete devices.

[0377] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0378] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be pointed out that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0379] Fig.23 The structure diagram of a communication device 2300 is shown. The communication device 2300 includes a processing module 2301 and a transceiver module 2302. The communication device 2300 can be used to implement the functions of the above terminal device. Alternatively, the communication device 2300 can be used to implement the functions of the above network device.

[0380] In some embodiments, the communication device 2300 may further include a storage module ( Fig.23 ), for storing program instructions and data.

[0381] In some embodiments, the transceiver module 2302 may also be referred to as a transceiver unit for implementing a sending and / or receiving function. The transceiver module 2302 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0382] In some embodiments, the transceiver module 2302 may include a receiving module and a sending module, which are respectively used to execute the transceiver-type (such as receiving and / or sending) steps performed by the terminal device or the network device in the above-mentioned method embodiments, and / or used to support other processes of the technology described herein; the processing module 2301 may be used to execute the processing-type (such as determination, etc.) steps performed by the terminal device or the network device in the above-mentioned method embodiments, and / or used to support other processes of the technology described herein.

[0383] 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.

[0384] Optionally, in the present application, the transceiver module receives / sends information, which can also be understood as the processing module receives / sends information through the transceiver module. The processing module receives / sends information through the transceiver module, which can also be understood as: the processing module controls the transceiver module to receive / send information. Alternatively, the processing module sends information through the transceiver module, which can be understood as: the processing module outputs information to the transceiver module, and the transceiver module sends the information; the processing module receives information through the transceiver module, which can be understood as: the transceiver module receives information and inputs the information to the processing module.

[0385] In the present application, the communication device 2300 may be presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0386] In some embodiments, when Fig.23 When the communication device 2300 is a chip or a chip system, the function / implementation process of the transceiver module 2302 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function / implementation process of the processing module 2301 can be implemented through the processor (or processing circuit) of the chip or the chip system.

[0387] Since the communication device 2300 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0388] As a possible product form, the terminal device or network device described in the embodiments of the present application can also be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.

[0389] As another possible product form, the terminal device or network device described in the embodiment of the present application can be implemented by a general bus architecture. Fig.24 , Fig.24 2 is a schematic diagram of the structure of a communication device 2400 provided in an embodiment of the present application, wherein the communication device 2400 includes a processor 2401 and a transceiver 2402. The communication device 2400 may be a terminal device, or a chip or chip system therein; or, the communication device 2400 may be a network device, or a chip or module therein. Fig.24 Only the main components of the communication device 2400 are shown. In addition to the processor 2401 and the transceiver 2402, the communication device 2400 may further include a memory 2403 and an input and output device (not shown in the figure).

[0390] Optionally, the processor 2401 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program. The memory 2403 is mainly used to store the software program and data. The transceiver 2402 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

[0391] Optionally, the processor 2401, the transceiver 2402, and the memory 2403 may be connected via a communication bus.

[0392] When the communication device is turned on, the processor 2401 can read the software program in the memory 2403, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 2401 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 2401. The processor 2401 converts the baseband signal into data and processes the data.

[0393] In another implementation, the RF circuit and antenna may be arranged independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged independently of the communication device in a remote manner.

[0394] In some embodiments, in terms of hardware implementation, those skilled in the art may imagine that the communication device 2300 may be implemented as Fig.24 The form of the communication device 2400 is shown.

[0395] As an example, Fig.23 The function / implementation process of the processing module 2301 in can be Fig.24 The processor 2401 in the communication device 2400 shown calls the computer execution instructions stored in the memory 2403 to implement. Fig.23 The function / implementation process of the transceiver module 2302 can be achieved by Fig.24 The transceiver 2402 in the communication device 2400 is shown to be implemented.

[0396] As another possible product form, the terminal device or network device in this application can be used Fig.25 The structure shown, or including Fig.25Parts shown. Fig.25 A schematic diagram of the composition of a communication device 2500 provided in this application.

[0397] like Fig.25 As shown, the communication device 2500 includes at least one processor 2501. Optionally, the communication device also includes a communication interface 2502.

[0398] When the program instructions involved are executed in the at least one processor 2501, the device 2500 can implement the method provided by any of the aforementioned embodiments and any possible designs thereof. Alternatively, the processor 2501 is used to implement the method provided by any of the aforementioned embodiments and any possible designs thereof through a logic circuit or execution code instructions.

[0399] The communication interface 2502 may be used to receive program instructions and transmit them to the processor, or the communication interface 2502 may be used for the communication device 2500 to communicate and interact with other communication devices, such as interactive control signaling and / or business data, etc. Exemplarily, the communication interface 2502 may be used to receive signals from other devices outside the communication device 2500 and transmit them to the processor 2501, or to send signals from the processor 2501 to other communication devices outside the communication device 2500.

[0400] Optionally, the communication interface 2502 may be a code and / or data read / write interface circuit, or the communication interface 2502 may be a signal transmission interface circuit between a communication processor and a transceiver, or may be a pin of a chip.

[0401] Optionally, the communication device 2500 may further include at least one memory 2503, which may be used to store required program instructions and / or data involved. It should be noted that the memory 2503 may exist independently of the processor 2501, or may be integrated with the processor 2501. The memory 2503 may be located inside the communication device 2500, or may be located outside the communication device 2500, without limitation.

[0402] Optionally, the communication device 2500 may further include a power supply circuit 2504, which may be used to supply power to the processor 2501. The power supply circuit 2504 may be located in the same chip as the processor 2501, or in another chip other than the chip where the processor 2501 is located.

[0403] Optionally, the communication device 2500 may further include a bus 2505 , and various parts of the communication device 2500 may be interconnected via the bus 2505 .

[0404] In some embodiments, in terms of hardware implementation, those skilled in the art may think of the above Fig.23 The communication device 2300 shown may be used Fig.25 The form of the communication device 2500 is shown.

[0405] As an example, Fig.23 The function / implementation process of the processing module 2301 in can be Fig.25 The processor 2501 in the communication device 2500 shown calls the computer execution instructions stored in the memory 2503 to implement. Fig.23 The function / implementation process of the transceiver module 2302 can be achieved by Fig.25 The communication interface 2502 in the communication device 2500 shown is implemented.

[0406] It should be pointed out that Fig.25 The structure shown does not constitute a specific limitation on the terminal device or network device. For example, in other embodiments of the present application, the terminal device or network device may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0407] Optionally, the processor in the present application may be a central processing unit (CPU), which may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may also be any conventional processor, etc.

[0408] Optionally, the memory in the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may 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 may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), or direct rambus RAM (DRRAM).

[0409] Optionally, the power supply circuit described in the embodiments of the present application includes but is not limited to at least one of the following: a power supply line, a power supply subsystem, a power management chip, a power consumption management processor, or a power consumption management control circuit.

[0410] In some embodiments, an embodiment of the present application further provides a communication device, which includes a processor for implementing a method in any of the above method embodiments.

[0411] As a possible implementation, the communication device further includes a memory. The memory is used to store necessary computer programs and data. The computer program may include instructions, and the processor may call the instructions in the computer program stored in the memory to instruct the communication device to execute the method in any of the above method embodiments. Of course, the memory may not be in the communication device.

[0412] As another possible implementation, the communication device also includes an interface circuit, which is a code / data read / write interface circuit, which is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.

[0413] As another possible implementation manner, the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.

[0414] It can be understood that the communication device can be a chip or a chip system. When the communication device is a chip system, it can be composed of chips, or it can include chips and other discrete devices. The embodiments of the present application do not specifically limit this.

[0415] The present application also provides a computer-readable storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed by a computer, the functions of any of the above method embodiments are implemented.

[0416] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0417] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0418] It is understood that the systems, devices and methods described in the present application can also be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0419] The units described as separate components may or may not be physically separated, i.e., they may be located in one place, or they may be distributed over multiple network units. The components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0420] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0421] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with the medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state drive (SSD)), etc. In the embodiment of the present application, the computer may include the aforementioned device.

[0422] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0423] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The method comprises: Monitoring a low power wake-up signal LP-WUS from a network device via a first link; Under the first condition, monitoring a physical downlink control channel PDCCH from the network device through the second link; The first condition includes at least one of the following: A first moment arrives, wherein the first moment is one of the periodic moments; or, The first link does not detect LP-WUS within a first time period; The power consumption of the first link is less than the power consumption of the second link.

2. The method according to claim 1, characterized in that The first time is configured by the network device; or the first duration is configured by the network device.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: receiving first information from the network device, where the first information is used to instruct to start a first timer; The monitoring of the LP-WUS from the network device through the first link includes: During the operation of the first timer, monitoring the LP-WUS from the network device via the first link; The monitoring of the PDCCH from the network device through the second link under the first condition includes: When the first timer times out, a PDCCH from the network device is monitored through the second link, and the running time of the first timer is the first time length.

4. A communication method, characterized in that: The method comprises: receiving a first signal from a network device via a first link; Determining, according to the signal quality of the first signal, that a radio link failure RLF occurs; First information is sent to the network device through a second link, where the first information is used to indicate that the RLF occurs, and power consumption of the first link is less than power consumption of the second link.

5. The method according to claim 4, characterized in that After determining that the RLF occurs and before sending the first information to the network device through the second link, the method further includes: receiving a second signal from the network device via the second link; The occurrence of the RLF is determined according to a signal quality of the second signal.

6. The method according to claim 5, characterized in that The method further comprises: receiving first information from the network device, wherein the first information is used to determine a first threshold; Determining, according to the signal quality of the first signal, that an RLF occurs includes: The occurrence of the RLF is determined according to the signal quality of the first signal and the first threshold.

7. The method according to claim 6, characterized in that The first information includes the first threshold; or, The first information includes a first offset, which is an offset between the first threshold and a second threshold, the second threshold being used by the terminal device to determine whether RLF occurs according to the signal quality of the second signal, and the method is applied to the terminal device.

8. The method according to any one of claims 5 to 7, characterized in that: The method further comprises: Second information is received from the network device, where the second information is used to configure a first measurement gap, where the first measurement gap is used to indicate a time period when the second link is in a closed state, and where the first measurement gap includes a time period when the first link monitors the first signal.

9. The method according to claim 8, characterized in that The second information is further used to configure a second measurement gap, where the second measurement gap is used to indicate a time period during which the first link is in a closed state, and the second measurement gap includes a time period during which the second link monitors the second signal.

10. The method according to claim 8 or 9, characterized in that: The second information is also used to indicate a first type of terminal device, and the measurement gap configured by the second information is configured by the network device for the first type of terminal device, and the first type of terminal device includes the terminal device to which the method is applied.

11. The method according to any one of claims 5 to 10, characterized in that: The first signal includes at least one of the following: a low power channel state information reference signal LP-CSI-RS, a low power reference signal LP-RS, a channel state information reference signal CSI-RS, a reference signal RS, or a synchronization signal; and / or, The second signal includes at least one of the following: LP-CSI-RS, LP-RS, CSI-RS, RS, or a synchronization signal.

12. A communication method, characterized in that: The method comprises: In a first time period of the first search space set group SSSG, a low power wake-up signal LP-WUS from a network device is monitored through a first link, wherein the first time period is a time period in which a physical downlink control channel PDCCH is not monitored through a second link; If the LP-WUS is detected, then In a second SSSG, a PDCCH from the network device is monitored through the second link, and power consumption of the first link is less than power consumption of the second link.

13. A communication method, characterized in that: The method comprises: In a third search space set group SSSG, monitoring a physical downlink control channel PDCCH from a network device through a second link, wherein the third SSSG is one of at least two pre-configured SSSGs; Under a second condition, monitoring a low power consumption wake-up signal LP-WUS from the network device through the first link; The second condition includes at least one of the following: The duration of monitoring the PDCCH in the third SSSG reaches a first duration; or, receiving indication information from the network device, the indication information including an SSSG index, the SSSG index being used to indicate monitoring of the LP-WUS through the first link; The power consumption of the first link is less than the power consumption of the second link.

14. A communication method, characterized in that: The method comprises: Sending a low power wake-up signal LP-WUS to the terminal device; A physical downlink control channel PDCCH is sent to the terminal device, and the time of sending the PDCCH includes a first time, and the first time is one of the periodic times.

15. The method according to claim 14, characterized in that The first moment is configured by a network device, and the method is applied to the network device.

16. A communication method, characterized in that: The method comprises: Sending first information to a terminal device; The first information is used to indicate starting a first timer, and the running state of the first timer is used to indicate whether to monitor a low power wake-up signal LP-WUS through a first link, and is used to indicate whether to monitor a physical downlink control channel PDCCH through a second link.

17. The method according to claim 16, characterized in that The running time of the first timer is configured by a network device, and the method is applied to the network device.

18. A communication method, characterized in that: The method comprises: sending second information to the terminal device; The second information is used to configure a first measurement gap, the first measurement gap is used to indicate a time period during which the second link is in a closed state, and the first measurement gap includes a time period during which the first link monitors the first signal; The power consumption of the first link is less than the power consumption of the second link.

19. The method according to claim 18, characterized in that The second information is further used to configure a second measurement gap, where the second measurement gap is used to indicate a time period during which the first link is in a closed state, and the second measurement gap includes a time period during which the second link monitors a second signal.

20. The method according to claim 18 or 19, characterized in that The second information is further used to indicate a first type of terminal device, and the measurement gap indicated by the second information is configured for the first type of terminal device, and the first type of terminal device includes the terminal device.

21. A communication method, characterized in that: The method comprises: Sending a low power wake-up signal LP-WUS to the terminal device within a first time period of the first search space set group SSSG; In the second SSSG, a PDCCH is sent to the terminal device.

22. A communication method, characterized in that: The method comprises: Sending a physical downlink control channel PDCCH to a terminal device in a third search space set group SSSG, wherein the third SSSG is one of at least two pre-configured SSSGs; Under the second condition, sending a low power consumption wake-up signal LP-WUS to the terminal device; The second condition includes at least one of the following: The duration of sending the PDCCH in the third SSSG reaches the first duration; or, Indication information is sent to the terminal device, where the indication information includes an SSSG index, and the SSSG index is used to instruct the terminal device to monitor the LP-WUS.

23. A communication device, characterized in that: The communication device includes a module for executing the method of any one of claims 1-3; or, includes a module for executing the method of any one of claims 4-11; or, includes a module for executing the method of claim 12; or, includes a module for executing the method of claim 13; or, includes a module for executing the method of any one of claims 14-15; or, includes a module for executing the method of any one of claims 16-17; or, includes a module for executing the method of any one of claims 18-20; or, includes a module for executing the method of claim 21; or, includes a module for executing the method of claim 22.

24. A communication device, characterized in that: The communication device includes a processor, and the processor is configured to execute the method described in any one of claims 1 to 3; or, the processor is configured to execute the method described in any one of claims 4 to 11; or, the processor is configured to execute the method described in claim 12; or, the processor is configured to execute the method described in claim 13; or, the processor is configured to execute the method described in any one of claims 14 to 15; or, the processor is configured to execute the method described in any one of claims 16 to 17; or, the processor is configured to execute the method described in any one of claims 18 to 20; or, the processor is configured to execute the method described in claim 21; or, the processor is configured to execute the method described in claim 22.

25. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes instructions, which, when executed, implement the method of any one of claims 1-3; or, implement the method of any one of claims 4-11; or, implement the method of claim 12; or, implement the method of claim 13; or, implement the method of any one of claims 14-15; or, implement the method of any one of claims 16-17; or, implement the method of any one of claims 18-20; or, implement the method of claim 21; or, implement the method of claim 22.

26. A computer program product, characterized in that The computer program product includes instructions, which, when executed, implement the method of any one of claims 1 to 3; or, implement the method of any one of claims 4 to 11; or, implement the method of claim 12; or, implement the method of claim 13; or, implement the method of any one of claims 14 to 15; or, implement the method of any one of claims 16 to 17; or, implement the method of any one of claims 18 to 20; or, implement the method of claim 21; or, implement the method of claim 22.

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