Communication method and communication device

Abstract

The invention provides a communication method and a communication device. The communication method comprises the following steps: the terminal equipment receives a low-power-consumption wake-up signal LP-WUS; and the terminal equipment switches to a main link of the terminal equipment and sets the state of the first resource according to the LP-WUS. According to the method, the time delay of setting the state of the first resource after the terminal equipment is switched to the main link in a scene that the terminal equipment works in the auxiliary link can be reduced.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communications, and in particular, to a communication method and a communication device. Background Art

[0002] Currently, in the scenario where the receiver of a terminal device operates on a secondary link, if a base station wants the terminal device to activate deactivated resources, the base station needs to first send a low power wake up signal (LP-WUS) to the terminal device to wake up the closed primary link in the terminal device, and then send downlink control information (DCI) to the terminal device to instruct the resources in the deactivated state to be switched to the activated state. Correspondingly, when the terminal device detects the DCI, the terminal device sets the deactivated resources to the activated state.

[0003] However, there is a problem that the delay in switching the state of the first resource after the terminal device switches to the primary link is large, which further leads to a relatively large service delay. Summary of the Invention

[0004] The present application provides a communication method to reduce the delay in setting the state of a first resource after switching to the primary link when the terminal device operates on a secondary link.

[0005] In a first aspect, the present application provides a communication method. This method can be executed by a terminal device, or by components (such as chips, chip systems, etc.) configured in the terminal device, or can also be a logic module or software capable of implementing all or part of the functions of the terminal device. The present application does not make any limitations in this regard.

[0006] Exemplarily, the method includes: receiving an LP-WUS; and according to the LP-WUS, switching to the primary link of the terminal device and setting the state of the first resource.

[0007] In this technical solution, after receiving the LP-WUS for waking up the primary link, the terminal device not only switches to operate on the primary link, but also sets the state of the first resource. That is to say, in this embodiment, after the access network device sends the LP-WUS to the terminal device, there is no need to send DCI specifically for instructing the terminal device to set the state of the first resource to the terminal device. Correspondingly, after the terminal device wakes up the primary link (that is, after switching to operate on the primary link), it directly sets the state of the first resource based on the LP-WUS, instead of having to set the state of the first resource based on detecting the DCI sent by the access network device. Therefore, the delay in setting the state of the first resource after switching to the primary link when the terminal device operates on a secondary link can be reduced.

[0008] In combination with the first aspect, in one implementation, the state of the first resource is deactivated while the terminal device is operating on the secondary link; according to LP-WUS, switching to the primary link of the terminal device and setting the state of the first resource includes: if LP-WUS is received, switching to the primary link of the terminal device and setting the state of the first resource to the active state.

[0009] In this technical solution, after the terminal device receives LP-WUS for waking up the primary link, in addition to switching to the primary link for operation, it will also activate the deactivated first resource, so that the state of the first resource becomes the active state, that is, it can be considered that the state of the first resource is switched. It can be understood that under this technical solution, since the primary link of the terminal device does not need to continue to detect the DCI sent by the access network device for activating the first resource after being woken up, the delay for the terminal device to activate the first resource can be reduced. In addition, it can be understood that for the access network device, this method also reduces the signaling overhead of the access network device indicating the activation of the first resource through DCI.

[0010] In combination with the first aspect, in one implementation, the LP-WUS carries first information, and the first information is used to indicate the state of the first resource; according to LP-WUS, switching to the primary link of the terminal device and setting the state of the first resource includes: when LP-WUS is received, switching to the primary link of the terminal device and setting the state of the first resource according to the first information.

[0011] In this technical solution, the LP-WUS sent by the access network device to the terminal device, in addition to indicating whether to wake up the primary link of the terminal device, also indicates the state of the first resource after the terminal device switches to the primary link, that is, the access network device indicates switching to the primary link and the state of the first resource to the terminal device through one LP-WUS at the same time, so that the terminal device does not need to detect the DCI for indicating the switching of the state of the first resource after switching to the primary link, thus improving the delay of the terminal device setting the state of the first resource after switching to the primary link.

[0012] In combination with the first aspect, in one implementation, the first resource is a resource in the first resource group, the first information is used to indicate the state of at least one resource in the first resource group, and at least one resource includes the first resource.

[0013] In combination with the first aspect, in one implementation, the state of the first resource is deactivated while the terminal device is operating on the secondary link; the first information is used to indicate the state of the first resource, including: the first information is used to indicate whether to activate the first resource; according to LP-WUS, switching to the primary link of the terminal device and setting the state of the first resource includes: if the first information indicates to activate the first resource, when LP-WUS is received, switching to the primary link of the terminal device and activating the first resource.

[0014] In this implementation manner, the LP-WUS is used to indicate not only whether to wake up the primary link of the terminal device, but also whether to activate the first resource.

[0015] Combined with the first aspect, in a possible implementation manner, the first resource is the first part of the bandwidth part (BWP) included in the first secondary cell (Scell), and the first Scell further includes a dormant BWP; wherein, when the terminal device is operating on the secondary link, the dormant BWP is in the active state and the first BWP is in the deactivated state.

[0016] Among them, the first BWP is one of the other BWPs except the dormant BWP among at least one BWP included in the first Scell. That is, the first BWP is a certain normal BWP or non-dormant BWP included in the first Scell.

[0017] In this technical solution, after the terminal device receives the LP-WUS for waking up the primary link, in addition to switching to operate on the primary link, it will also activate the first BWP on the deactivated first Scell, so that the state of the first BWP on the first Scell becomes the active state. It can be understood that in this technical solution, since the primary link of the terminal device does not need to continue to detect the downlink control information (DCI) sent by the access network device for activating the first BWP on the first Scell after being woken up, the delay for the terminal device to activate the first BWP on the first Scell can be reduced.

[0018] Combined with the first aspect, in a possible implementation manner, the method further includes: when the terminal device is operating on the primary link, receiving second information, where the second information is used to indicate that the terminal device is to go dormant on the first Scell; in response to the second information, going dormant on the first Scell; wherein, when going dormant on the first Scell, the dormant BWP is in the active state and the first BWP is in the deactivated state.

[0019] Combined with the first aspect, in a possible implementation manner, the method further includes: when the terminal device is operating on the primary link, receiving third information, where the third information is used to indicate the first channel state information (CSI) measurement period when the terminal device performs CSI measurement; performing CSI measurement based on the second CSI measurement period, and the second CSI measurement period is greater than the first CSI measurement period.

[0020] Optionally, in a possible implementation manner, the access network device sends fourth information to the terminal device, where the fourth information is used to indicate the second CSI measurement period; correspondingly, the terminal device obtains the second CSI measurement period through the fourth information.

[0021] In this technical solution, it is possible to relax the measurement of CSI when the terminal device is operating on the secondary link, thereby further reducing the power consumption of the terminal device when it is operating on the secondary link.

[0022] In combination with the first aspect, in a possible implementation manner, the first resource is a first semi-persistent scheduling (SPS) resource.

[0023] In this technical solution, after the terminal device receives the LP-WUS for waking up the primary link, in addition to switching to the primary link for operation, it will also activate the deactivated first SPS, so that the state of the first SPS resource on the first Scell becomes the active state. It can be understood that under this technical solution, since the primary link of the terminal device does not need to continue to detect the DCI sent by the access network device for activating the first SPS resource after being woken up, the delay for the terminal device to activate the first SPS resource can be reduced.

[0024] In combination with the first aspect, in a possible implementation manner, when the first resource is the first SPS resource, the method further includes: when the terminal device is operating on the primary link, receiving fifth information, where the fifth information is used to instruct the terminal device to deactivate the first SPS resource; in response to the fifth information, setting the state of the first SPS resource to the deactivated state.

[0025] In combination with the first aspect, in a possible implementation manner, the first information is used to indicate the state of the first resource, including: the first information is used to indicate whether to deactivate the first resource; switching to the primary link of the terminal device and setting the state of the first resource according to the LP-WUS, including: if the first information indicates to deactivate the first resource, when receiving the LP-WUS, switching to the primary link of the terminal device and not detecting signals on the first resource.

[0026] Optionally, under this technical solution, the first resource may be, for example, a WUS resource (also referred to as a DCP resource).

[0027] The communication method provided in this embodiment indicates to the terminal device whether to deactivate the first resource after switching to the primary link by adding indication information in the LP-WUS. It can be seen that for the scenario where the state of the first resource changes from the deactivated state to the active state, this technical solution does not require the access network device to send DCI to the terminal device to indicate deactivating the first resource after the terminal device wakes up the primary link. Correspondingly, it also does not require the terminal device to continue to detect the DCI for indicating deactivating the first resource, so the power consumption of the terminal device can also be reduced.

[0028] In combination with the first aspect, in a possible implementation manner, the above method further includes: when the first information indicates that the first resource is not deactivated and the terminal device does not detect a signal on the first resource within the first time period, switching from the primary link of the terminal device to the secondary link of the terminal device.

[0029] In a second aspect, the present application provides a communication method. This method can be executed by an access network device, or can also be executed by components (such as chips, chip systems, etc.) configured in the access network device, or can also be a logic module or software capable of implementing all or part of the functions of the access network device. The present application does not make any limitations in this regard.

[0030] Exemplarily, the method includes: sending a low-power wake-up signal LP-WUS, where the LP-WUS carries first information, and the first information is used to indicate the status of the first resource.

[0031] In combination with the second aspect, in a possible implementation manner, the first resource is one resource in the first resource group, and the first information is used to indicate the status of at least one resource in the first resource group, and the at least one resource includes the first resource.

[0032] In combination with the second aspect, in a possible implementation manner, the status of the first resource is the deactivated state during the period when the terminal device is operating on the secondary link; the first information is used to indicate the status of the first resource, including: the first information is used to indicate whether to activate the first resource.

[0033] In combination with the second aspect, in a possible implementation manner, the first resource is the first part of the bandwidth BWP included in the first secondary cell Scell, and the first Scell further includes a dormant BWP;

[0034] Wherein, during the period when the terminal device is operating on the secondary link, the dormant BWP is in the activated state and the first BWP is in the deactivated state.

[0035] In combination with the second aspect, in a possible implementation manner, the method further includes: when the terminal device is operating on the primary link, sending second information, and the second information is used to indicate that the terminal device is in a dormant state on the first Scell.

[0036] In combination with the second aspect, in a possible implementation manner, the method further includes: when the terminal device is operating on the primary link, sending third information and fourth information, the third information is used to indicate the first CSI measurement period when the terminal device performs CSI measurement, and the fourth information is used to indicate the second CSI measurement period when the terminal device performs CSI measurement.

[0037] In combination with the second aspect, in a possible implementation manner, the first resource is the first SPS resource.

[0038] In combination with the second aspect, in a possible implementation manner, the method further includes: when the terminal device is operating on the primary link, sending fifth information, where the fifth information is used to instruct the terminal device to deactivate the first SPS resource.

[0039] In combination with the second aspect, in a possible implementation manner, the first information is used to indicate the status of the first resource, including: the first information is used to indicate whether to deactivate the first resource.

[0040] In combination with the second aspect, in a possible implementation manner, the signal on the first resource is a wake-up signal WUS.

[0041] In combination with the second aspect, in a possible implementation manner, the method further includes: if the first information indicates that the first resource does not need to be deactivated and the terminal device does not detect a signal on the first resource within the first duration, switching from the primary link of the terminal device to the secondary link of the terminal device.

[0042] In a third aspect, the present application provides a communication method applied to a terminal device, including: when the terminal device is operating on the primary link, receiving sixth information, where the sixth information instructs to deactivate M SPS resources among N activated SPS resources, M and N are positive integers, and M is less than N; switching to operate on the secondary link; when on the target SPS resource, switching to the primary link and detecting the signal on the target SPS resource, where the target SPS resource is included in the N - M SPS resources other than the M SPS resources among the N SPS resources.

[0043] In combination with the third aspect, in a possible implementation manner, the SPS period corresponding to the M SPS resources is less than the SPS period corresponding to any one of the SPS resources other than the M SPS resources among the N SPS resources.

[0044] In a fourth aspect, the present application provides a communication method applied to an access network device, including: sending sixth information, where the sixth information instructs the terminal device to deactivate M SPS resources among N activated SPS resources, M and N are positive integers, and M is less than N.

[0045] In a fifth aspect, the present application provides a communication method applied to a terminal device, including: when the terminal device is operating on the primary link, receiving seventh information, where the seventh information indicates K activated SPS resources; switching to operate on the secondary link and deactivating P SPS resources among the K SPS resources, and the SPS period corresponding to each of the P SPS resources is less than the SPS period corresponding to any one of the SPS resources other than the P SPS resources among the K SPS resources.

[0046] Sixth aspect, the present application provides a communication device, which can implement the methods described in the first aspect to the fifth aspect and any possible implementation manner of the first aspect to the fifth aspect. The device includes corresponding modules for executing the above methods. The modules included in the device can be implemented in software and / or hardware manners.

[0047] Seventh aspect, the present application provides a communication device, which includes a processor, and the processor can be used to execute a computer program in a memory to implement the methods described in the first aspect to the fifth aspect and any possible implementation manner of the first aspect to the fifth aspect.

[0048] Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface. The communication interface is used to receive signals from other communication devices outside the device and transmit them to the processor, or send signals from the processor to other communication devices outside the device. Exemplarily, the communication interface can be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces.

[0049] Optionally, the device further includes a memory, and the processor is coupled to the memory. The memory is used to store program instructions and data. When the processor executes the instructions stored in the memory, the methods described in the above aspects can be implemented.

[0050] Eighth aspect, the present application provides a communication device, including a processor and a communication interface. The communication interface is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or send signals from the processor to other communication devices outside the communication device. The processor uses logical circuits or executes code instructions to implement the methods described in the first aspect to the fifth aspect and any possible implementation manner of the first aspect to the fifth aspect. Exemplarily, the communication interface can be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces.

[0051] Optionally, the device further includes a memory for storing instructions and data. The memory can be coupled to the processor, and when the processor executes the instructions stored in the memory, the methods described in the first aspect to the fifth aspect and any possible implementation manner of the first aspect to the fifth aspect can be implemented.

[0052] Ninth aspect, the present application provides a communication device, including a processor and a memory. The memory is used to store instructions and data. When the processor executes the instructions stored in the memory, the methods described in the first aspect to the fifth aspect and any possible implementation manner of the first aspect to the fifth aspect can be implemented.

[0053] Optionally, the device further includes a communication interface for the device to communicate with other communication devices. Exemplarily, the communication interface can be a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces.

[0054] In a tenth aspect, the present application provides a computer-readable storage medium storing a computer program or instructions, which when executed, implement the methods described in the first aspect to the fifth aspect and any possible implementation manners of the first aspect to the fifth aspect.

[0055] In a tenth aspect, the present application provides a computer program product including instructions, which when run, implement the methods described in the first aspect to the fifth aspect and any possible implementation manners of the first aspect to the fifth aspect.

[0056] In an eleventh aspect, the present application provides a chip system including at least one processor for supporting the implementation of the functions involved in the first aspect to the fifth aspect and any possible implementation manners of the first aspect to the fifth aspect. For example, receiving or processing data involved in the above methods, etc.

[0057] In a possible design, the chip system further includes a memory for storing program instructions and data, and the memory is located inside or outside the processor.

[0058] The chip system can be composed of chips or can include chips and other discrete devices.

[0059] Among them, the effects achievable in the second aspect to the eleventh aspect can refer to the description in the first aspect and will not be elaborated here. Description of the Drawings

[0060] Figure 1 Exemplarily, a communication system to which an embodiment of the present application is applied is given;

[0061] Figure 2 Exemplarily, another communication system to which an embodiment of the present application is applied is given;

[0062] Figure 3 It is a schematic diagram of the DRX basic model provided by the present application;

[0063] Figure 4 It is a schematic diagram of the Scell improving throughput provided by the present application;

[0064] Figure 5 It is a schematic diagram of the Scell going to sleep provided by the present application;

[0065] Figure 6Schematic diagram of a terminal device including LP-WUR provided for this application;

[0066] Figure 7 Flow schematic diagram of a communication method provided for an embodiment of this application;

[0067] Figure 8 Flow schematic diagram of a communication method provided for an embodiment of this application;

[0068] Figure 9 Flow schematic diagram of a communication method provided for another embodiment of this application;

[0069] Figure 10 Structural schematic diagram of a communication device provided for an embodiment of this application;

[0070] Figure 11 Structural schematic diagram of a communication device provided for another embodiment of this application. Detailed implementation manners

[0071] For the convenience of clearly describing the technical solutions of the embodiments of this application, in the embodiments of this application, terms such as "first" and "second" are used to distinguish identical items or similar items with basically the same functions and effects. For example, the first information and the second information are used to distinguish different information, and no limitation is imposed on their order. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and terms such as "first" and "second" do not necessarily limit being different.

[0072] It should be noted that in this application, words such as "exemplarily" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplarily" or "for example" is intended to present relevant concepts in a specific manner.

[0073] The embodiments of this application provide a communication method and a device. Among them, the method and the device are based on the same technical concept. Since the principles for the method and the device to solve problems are similar, the implementation of the device and the method can be referred to each other, and the repeated parts will not be elaborated.

[0074] The embodiments of this application do not limit the communication system to which the technical solutions provided by this application can be applied, as long as the communication system includes a terminal under the LP-WUS configuration.

[0075] Exemplarily, the communication system to which the technical solution provided in this application is applied may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA), a long term evolution (LTE) system, an LTE advanced (LTE-A), an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunication system (UMTS), a fifth generation mobile communication system, and some future communication systems (such as a sixth generation mobile communication system), etc.

[0076] Exemplarily, the technical solution provided in the embodiments of this application may also be applied to a device-to-device (D2D) communication system, a vehicle-to-everything (V2X) communication system, a machine-to-machine (M2M) communication system, a machine type communication (MTC) communication system, and an Internet of Things (IoT) communication system.

[0077] Combined with Figure 1 , an exemplary communication system applied in the embodiments of this application is given. As Figure 1 shown, the communication system includes a network device and a terminal device.

[0078] Among them, the network device can be any device with wireless transceiver function. The device includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), access point (AP) in wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc. It can also be a gNB in a 5G system such as NR, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system. Or, it can also be a network node constituting a gNB or a transmission point, such as a base band unit (BBU) or a distributed unit (DU), etc.

[0079] In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements the functions of the radio resource control (RRC) and the packet data convergence protocol (PDCP) layer, and the DU implements the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. Since the information of the RRC layer will ultimately become the information of the physical layer, or is transformed from the information of the physical layer, therefore, in this architecture, high-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or sent by the DU + CU. It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be classified as a network device in the radio access network (RAN), or the CU can be classified as a network device in the core network (CN), and this application does not make any limitations in this regard.

[0080] A terminal device can be a device that provides voice and / or data connectivity to users. For example, it can be a handheld device with wireless connection capabilities, a vehicle-mounted device, etc. A terminal device can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile, a remote station, a remote terminal, a mobile equipment, a user terminal, a wireless telecom equipment, a user agent, a user equipment, or a user device. A terminal device can be a station (STA) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, and a terminal in a next-generation communication system (e.g., a fifth-generation (5G) communication network) or a terminal device in a future evolved public land mobile network (PLMN). Among them, 5G can also be referred to as a new radio (NR). In a possible application scenario of this application, the terminal device can also be a terminal device that often works on the ground, such as a vehicle-mounted device. In this application, for the convenience of description, the chip deployed in the above device, or the chip can also be referred to as a terminal device.

[0081] In this application, the network device and the terminal device can communicate through licensed spectrum, or through unlicensed spectrum, or through both licensed and unlicensed spectrums simultaneously. The network device and the terminal device can communicate through spectrums below 6 gigahertz (GHz), or through spectrums above 6 GHz, or through both spectrums below 6 GHz and above 6 GHz simultaneously. The embodiments of this application do not limit the spectrum resources used between the network device and the terminal device.

[0082] It can be understood that Figure 1 the number of terminal devices shown in

[0083] is only an example, and the specific number of terminal devices does not constitute a limitation to this application. Figure 2 Combined with Figure 2 an exemplary communication system to which the embodiments of this application are applied is given. As shown in Figure 2 In the communication system 2000, there are terminal device 210 and terminal device 220, and terminal device 210 and terminal device 220 can communicate through wireless communication technology. Among them, the communication link between terminal device 210 and terminal device 220 can be called a sidelink or other names; the air interface for direct communication between terminal device 210 and terminal device 220 is called PC5 or other names, and the embodiments of this application do not limit this either. It should be understood that Figure 2 is only a simplified schematic diagram shown for easy understanding. For example, the communication system 2000 may also include other devices

[0084] which are not drawn in Figure 1 For example, the communication system 2000 may also include an access network device. Figure 2The communication system shown. In the embodiments of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement service processing through processes. For example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system, etc. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided in the embodiments of the present application. As long as it can communicate according to the method provided in the embodiments of the present application by running a program that records the code of the method provided in the embodiments of the present application. For example, the execution subject of the method provided in the embodiments of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.

[0085] In addition, the methods in various aspects of the present application can be implemented in a programming manner and form a computer program accessible to a computer-readable device, carrier, or medium. For example, the computer-readable medium can include, but is not limited to: magnetic storage devices (such as hard disks, floppy disks, or magnetic tapes, etc.), optical discs (such as compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (such as erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). In addition, the various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to, wireless channels and various other media that can store, contain, and / or carry instructions and / or data.

[0086] Currently, for Figure 1 or Figure 2 For the communication system shown, in order to save the power consumption of the terminal device, a discontinuous reception (DRX) mechanism, a DCP mechanism, and a secondary cell (Scell) sleep mechanism are introduced. Next, the DRX mechanism, the Scell sleep mechanism, and the LP-WUS mechanism will be described respectively.

[0087] 1. DRX mechanism

[0088] The DRX mechanism is to configure a DRX cycle for a terminal device in the radio resource control (RRC) connected state. The DRX cycle consists of an "on Duration" and an "Opportunity for DRX": during the "on Duration" period, the terminal device detects and receives the physical downlink control channel (PDCCH); while during the "Opportunity for DRX" period, the terminal device does not detect the PDCCH to save power consumption.

[0089] In this application, the "on Duration" period is also referred to as the active period, and the "Opportunity for DRX" period is also referred to as the deactivated period. Exemplarily, Figure 3 is a schematic diagram of the basic DRX model provided in this application. As Figure 3 shown, a terminal device in the RRC connected state periodically enters the active period and the deactivated period. When the terminal device enters the active period, the terminal device performs PDCCH detection, that is, it can be considered that the terminal device is in a non-sleep state. And when the terminal device enters the deactivated period, the terminal device no longer performs PDCCH detection, that is, it can be considered that the terminal device is in a sleep state, so as to achieve the purpose of reducing the power consumption of the terminal.

[0090] Currently, the base station sends DRX configuration information to the terminal device so that the terminal device enters the active mode within a specified period based on the DRX configuration information, and enters the deactivated mode at other times to achieve sleep under the DRX mechanism.

[0091] 2. DCP mechanism

[0092] DCP (DCI with CRC scrambled by PS-RNTI) is also called the wake up signal (WUS), that is, the network side sends it before the on Duration to indicate whether the terminal device needs to wake up at the next Opportunity for DRX. In CDRX, the terminal device wakes up periodically to detect whether there is a scheduling. DCP is based on CDRX (that is, DCP must be used in combination with CDRX), and adds a WUS to indicate whether the terminal device needs to wake up in the next cycle for detection.

[0093] 3. Scell sleep mechanism

[0094] To increase the peak rate and meet the requirements of the (enhanced mobile broadband, eMBB) scenario, increasing the cell bandwidth can be considered. However, the maximum bandwidth of a single cell is already fixed. Therefore, multiple cells can be used to serve the terminal device, which is the idea of carrier aggregation (CA) technology. That is to say: the bandwidths of multiple cells can be aggregated for the terminal device to use, that is, multiple component carriers (CCs) are aggregated together. In this way, the bandwidth of the terminal device is the sum of the bandwidths of multiple carriers, thus enabling the improvement of the terminal peak rate and system capacity to meet the increasingly high network rate requirements of the terminal.

[0095] CA has two important concepts: the primary cell (Pcell) and the secondary cell (Scell).

[0096] When the terminal device is configured with CA, when there is traffic data transmission on the terminal device, the network device can instruct the terminal device to perform data transmission on the SCell to provide higher throughput. Exemplarily, as Figure 4 shown, the cells of the terminal device include Pcell, Scell1, and Scell2. When the terminal device performs data transmission in the non-dormant state, it transmits simultaneously on Pcell, Scell1, and Scell2, so higher throughput can be obtained. However, since the traffic volume of the Scell is sparser than that of the Pcell, therefore, in order to further reduce the power consumption of the terminal device, the Scell dormancy mechanism is introduced: when there is no data transmission on a certain SCell, the terminal device can enter the dormant state on that SCell. In this application, the SCell that needs to be dormant is also called the dormant SCell.

[0097] Specifically, under the Scell dormancy mechanism, for each SCell of the terminal device, at least two downlink bandwidth parts (BWPs) will be configured, one of which is the dormant BWP (i.e., the dormant BWP), and the others are non-dormant BWPs (also described as normal BWPs). When the terminal device activates the dormant BWP of the SCell, the corresponding terminal device enters the dormant state on the SCell. At this time, the terminal device only performs channel state information (CSI) measurement and does not detect the PDCCH. When the terminal device activates the normal BWP of the SCell, the corresponding terminal device enters the non-dormant state (or called the normal state) on the SCell. At this time, the terminal performs normal data transmission and needs to detect the PDCCH.

[0098] Specifically, the network device indicates to the terminal device whether to activate the dormant BWP or the normal BWP of the Scell by sending DCI on the Pcell to the terminal device. Or it can also be said that: the network device indicates the switching between the dormant BWP and the normal BWP of the terminal device on the Scell by sending DCI on the Pcell of the terminal device to the terminal device. Or it can also be said that: the dormant BWP and the normal BWP configured on the SCell are switched according to the DCI indication received on the PCell.

[0099] When the DCI indicates that the terminal device activates the dormant BWP (or described as the DCI indicates switching to the dormant BWP), the terminal device activates the dormant BWP and then enters the dormant state on the Scell; when the DCI indicates activating the normal BWP (or described as the DCI indicates switching to the normal BWP), the terminal device activates the normal BWP and the terminal device enters the non-dormant state on the Scell.

[0100] Exemplarily, as Figure 5 shown, when the Pcell, Scell1, and Scell2 serve the terminal device simultaneously, if it is found that there is no data transmission on the Scell1 and Scell2 by the terminal device in the next period of time, at this time, the network device instructs the terminal device to activate the dormant BWP of the Scell1 and Scell2 to enter the dormant state on the Scell1 and Scell2. Or in other words, the network device instructs the terminal device to switch the BWP of the Scell1 and Scell2 to the dormant BWP to enter the dormant state on the Scell1 and Scell2.

[0101] Above, three technologies that can be used to reduce the power consumption of the terminal are introduced. Next, another technology for reducing the power consumption of the terminal device is introduced. This technology can also be called the LP-WUS technology. The LP-WUS technology is described in detail below.

[0102] It can be understood that currently, whether the terminal device performs paging reception in the idle state / inactive state or data reception in the connected state, these functions are all completed by the main receiver (or called the main circuit) in the terminal device. The main receiver mainly includes a radio frequency processing module and a baseband processing module. It can be understood that the main circuit (or the main receiver) is only named for distinction, and its specific naming does not limit the protection scope of this application. For the convenience of description below, it is uniformly described as the main receiver.

[0103] In this application, the terminal device using the main receiver to receive signals is also called the terminal device working on the main link. In other words, when the terminal device uses the main receiver to receive signals, it can be considered that the main link of the terminal device is in the working state.

[0104] Under the LP-WUS technology, in order to reduce the power consumption of the terminal device, the terminal device can receive signals by using a separate low-power small circuit. Compared with the main receiver, the low-power small circuit is implemented by using a simple separate small circuit or chip, that is, the low-power small circuit has lower complexity, lower power consumption, and lower processing capabilities (such as demodulation and calculation). The low-power small circuit can be called a secondary receiver, or a lower power wake up receiver (LP-WUR), or a low-power wake-up circuit, or a low-power circuit, etc. Regarding its naming, this application does not limit it. For the convenience of description below, the low-power small circuit is uniformly described as a secondary receiver. It can be understood that the secondary receiver is only named for distinction, and its specific naming does not limit the protection scope of this application.

[0105] In this application, the terminal device using the secondary receiver to receive signals is also referred to as the terminal device operating on the secondary link. In other words, when the terminal device uses the secondary receiver to receive signals, it can be considered that the secondary link of the terminal device is in an operating state.

[0106] Specifically, as Figure 6 shown, when the terminal device operates on the secondary link, the terminal device will detect the low power wake up signal (LP-WUS) sent by the network device. The LP-WUS is used to indicate whether to wake up the closed (or sleeping) main receiver in the terminal device, or it can also be said that the LP-WUS is used to indicate whether to wake up the closed (or sleeping) main link in the terminal device. When the LP-WUS indicates to wake up the closed (or sleeping) main link in the terminal device, the terminal device wakes up the main link. Waking up the main link means that the terminal device switches from the secondary link to the main link for operation, or the terminal device switches from the secondary receiver to the main receiver for operation.

[0107] It should be noted here that this embodiment does not limit the specific form of the main receiver before waking up the closed (or sleeping) main receiver through the LP-WUS. For example, the main receiver is in an ultra-deep sleep state, or a deep sleep state, or a light sleep state, or a micro-sleep state before being woken up. The difference between different states is the ramp up time, and the ramp up time mainly refers to the time taken for the relevant hardware of the main receiver to be turned on. Exemplarily, the ramp up time of the main receiver in the ultra-deep sleep state is 400 ms.

[0108] Network devices usually configure various resources for terminal devices.

[0109] Currently, in the scenario where the receiver of the terminal device operates on the secondary link, if the base station wants the terminal device to activate the deactivated resources, then the base station needs to first send a low power wake up signal (LP-WUS) to the terminal device to wake up the closed primary link in the terminal device, and then send downlink control information (DCI) to the terminal device to indicate setting the deactivated resources to the activated state. Correspondingly, when the terminal device detects the DCI, the terminal device switches the deactivated resources to the activated state.

[0110] Alternatively, in the scenario where the receiver of the terminal device operates on the secondary link, if the base station wants the terminal device to deactivate the activated resources, then the base station needs to first send a low power wake up signal (LP-WUS) to the terminal device to wake up the closed primary link in the terminal device, and then send downlink control information (DCI) to the terminal device to indicate setting the activated resources to the deactivated state. Correspondingly, when the terminal device detects the DCI, the terminal device switches the deactivated resources to the activated state.

[0111] For example, before the terminal device enters the secondary link operation, the network device instructs the terminal device to enter the sleep state on Scell1, that is, it can be considered that the network device instructs the terminal device to deactivate the normal BWP of Scell1, and then instructs the terminal device to enter the secondary link operation. After that, if the network device wants to instruct the terminal device to activate the normal BWP of Scell1, or it can be said that the network device wants to instruct the terminal device to switch to the normal BWP on Scell1, at this time, the network device needs to first send the LP-WUS for waking up the primary receiver to the terminal device, and then send the DCI for indicating the activation of the normal BWP of Scell1 to the terminal device; correspondingly, the terminal device wakes up the primary receiver based on the LP-WUS, and then continues to detect the DCI to activate the normal BWP of Scell1 after waking up the primary receiver.

[0112] For another example, before the terminal device enters the secondary link operation, the network device instructs the terminal device to deactivate the SPS resource 1, and then instructs the terminal device to enter the secondary link operation. After that, if the network device wants to instruct the terminal device to activate the SPS resource 1, at this time, the network device needs to first send an LP-WUS for waking up the primary receiver to the terminal device, and then send a DCI for instructing the activation of the SPS resource 1 to the terminal device; correspondingly, the terminal device wakes up the primary receiver based on the LP-WUS, and then continues to detect the DCI to activate the SPS resource 1 after waking up the primary receiver. Here, the concept of the SPS resource is introduced: The currently commonly used scheduling method is dynamic scheduling, that is, one DCI instructs one PDSCH or PUSCH. The terminal device first detects a DCI, and then according to the indication of this DCI, performs the reception of the PDSCH or the transmission of the PUSCH, and then goes to detect the next DCI. Semi-persistent scheduling, as the name implies, means that one DCI or RRC reconfiguration message can instruct several (continuous) PDSCHs or PUSCHs. Once the terminal device receives a specific DCI or RRC reconfiguration message, it starts to periodically receive the PDSCH or transmit the PUSCH until this persistent scheduling stops. During this period of persistent scheduling, the terminal device does not need to detect the DCI anymore, which is the so-called semi-persistent scheduling. Compared with dynamic scheduling, it undoubtedly reduces the number of blind detections of the DCI, so it reduces the latency and power consumption for the terminal device. SPS is divided into two types: Type 1 and Type 2, and the activation method is related to the type: UL SPS can be either Type 1 or Type 2. Type 1 is activated through the RRC reconfiguration message, that is, it has been activated when the UE receives the RRC configuration. Type 2 is first configured and then activated through the PDCCH; DL SPS has only Type 2, that is, it can only be activated by the method of first RRC configuration and then PDCCH activation.

[0113] It can be seen that in the above method, there is a problem of large latency in setting the status of the resource after the terminal device wakes up the primary link.

[0114] Therefore, the present application provides a communication method to reduce the latency of setting the status of the resource after waking up the primary link when the terminal device operates on the secondary link.

[0115] Next, in combination with the accompanying drawings, the communication method provided by the present application is introduced. This communication method can also be called a resource status setting method or a method for switching the resource status.

[0116] Figure 7 It is a schematic flowchart of the communication method provided by the embodiment of the present application. Figure 7The method is described only by taking the interaction between the terminal device and the access network device as an example, and should not constitute any limitation to this application. For example, Figure 7 the terminal device in Figure 7 can be replaced with components configured in the terminal device (such as chips, chip systems, processors, etc.), or logical modules or software that can implement all or part of the functions of the terminal device; the first access network device can be replaced with components configured in the first access network device (such as chips, chip systems, processors, etc.), or logical modules or software that can implement all or part of the functions of the first access network device; the second access network device can be replaced with components configured in the second access network device (such as chips, chip systems, processors, etc.), or logical modules or software that can implement all or part of the functions of the second access network device; the core network device can be replaced with components configured in the core network device (such as chips, chip systems, processors, etc.), or logical modules or software that can implement all or part of the functions of the core network device.

[0117] Figure 7 The method shown includes steps 710 to 730. The following details Figure 7 each step in the exemplary method.

[0118] Step 710: The terminal device enters the secondary link operation.

[0119] When the terminal device enters the secondary link operation, that is, the terminal device enters the state of receiving signals using the secondary receiver.

[0120] It can be understood that if the terminal device is operating on the primary link before entering the secondary link operation (i.e., the terminal device uses the primary receiver to receive signals), then when the terminal device enters the secondary link operation, it can also be considered that the terminal device switches from the primary link to the secondary link operation.

[0121] Step 720: The access network device sends LP-WUS to the terminal device; correspondingly, the terminal device receives the LP-WUS.

[0122] In this embodiment, the LP-WUS sent by the access network device to the terminal device includes information for instructing the terminal device to wake up the primary link.

[0123] For example, the LP-WUS sent by the access network device includes information about one or more terminal devices to be woken up (such as UE ID). Among them, the one or more terminal devices can also be in the form of a terminal device group (UE group), and correspondingly, the wake-up information can include the group identifier of the terminal device group. For the detailed description of LP-WUS, reference can be made to the description in the related art, which will not be elaborated here.

[0124] Step 730: The terminal device switches to the primary link of the terminal device based on LP-WUS and sets the status of the first resource.

[0125] In this embodiment, for the terminal device, after receiving the LP-WUS for waking up the primary link, in addition to switching to the primary link for operation, the terminal device will also set the status of the first resource. That is, in this embodiment, the LP-WUS received by the terminal device can be considered a sufficient condition for setting the status of the first resource.

[0126] That is to say, in this embodiment, after the access network device sends the LP-WUS to the terminal device, there is no need to send a DCI specifically for instructing the terminal device to switch the status of the first resource to the terminal device. Correspondingly, after the terminal device wakes up the primary link (i.e., after switching to the primary link for operation), it directly sets the status of the first resource based on the LP-WUS, rather than based on detecting the DCI sent by the access network device. Therefore, the latency of setting the status of the first resource after switching to the primary link when the terminal device is operating on the secondary link can be reduced.

[0127] It should be noted here that this embodiment does not limit the specific manner in which the terminal device sets the status of the first resource based on LP-WUS. Hereinafter, two implementation schemes are described.

[0128] Implementation Scheme (1)

[0129] It can be understood that when the terminal device receives the LP-WUS, it indicates that the network side is likely to schedule services for the terminal at this time. Therefore, in Implementation Scheme (1), if the first resource is a resource whose status is deactivated during the period when the terminal device is operating on the secondary link, then the terminal device switches to the primary link of the terminal device based on the LP-WUS and sets the status of the first resource, including: if the LP-WUS is received, switching to the primary link of the terminal device and switching the status of the first resource to the activated state.

[0130] Exemplarily, this embodiment does not limit the specific form of the resource whose status is deactivated during the period when the terminal device is operating on the secondary link. Exemplarily, it can be any one of the following: the normal BWP (also referred to as the non-sleep BWP) of the Scell of the terminal device that is in the deactivated state during the period when the terminal device is operating on the secondary link, or it can also be the SPS resource / CG resource that is in the deactivated state during the period when the terminal device is operating on the secondary link, or, or it can also be other uplink resources that are in the deactivated state during the period when the terminal device is operating on the secondary link.

[0131] In this solution (1), after receiving the LP-WUS for waking up the primary link, the terminal device not only switches to work on the primary link but also activates the first resource in the deactivated state, making the state of the first resource become the activated state. It can be understood that under this technical solution, since the primary link of the terminal device does not need to continue detecting the DCI sent by the access network device for activating the first resource after being woken up, the delay for the terminal device to activate the first resource can be reduced, and further the service delay can be reduced. Additionally, it can be understood that for the access network device, this method also reduces the signaling overhead of the access network device indicating the activation of the first resource through DCI.

[0132] Implementation solution (2)

[0133] When the access network device sends the LP-WUS to the terminal device, it carries the first information in the LP-WUS, and the first information is used to indicate the state of the first resource after switching to the primary link. Correspondingly, the terminal device switches to the primary link of the terminal device and sets the state of the first resource according to the LP-WUS, including: when receiving the LP-WUS, switching to the primary link of the terminal device and setting the state of the first resource according to the first information.

[0134] That is, in this implementation solution, the LP-WUS sent by the access network device to the terminal device not only indicates whether to wake up the primary link of the terminal device but also indicates the state of the first resource. That is, the access network device simultaneously indicates to the terminal device the state after switching to the primary link and the state of the first resource through one LP-WUS. In this way, on the access network device side, after indicating that the terminal device switches to the primary link, there is no need to send DCI to the terminal device to indicate the state of the first resource. And for the terminal device side, after switching to the primary link, there is no need to detect the DCI for indicating the state of the first resource, so the delay for the terminal device to set the state of the first resource after switching to the primary link is also improved.

[0135] It should be noted here that the specific forms of the state of the first resource in this implementation example (implementation solution 2) before and after switching are not limited.

[0136] For example, the state of the first resource is deactivated before the handover and activated after the handover. In this scenario, in this embodiment, the first information is used to indicate the state of the first resource, that is: the first information is used to indicate whether to activate the first resource. Further, if the first information indicates to activate the first resource, when receiving LP-WUS, switch to the primary link of the terminal device and activate the first resource, that is, change the state of the first resource from deactivated to activated. It can be understood that in this scenario, reducing the handover delay of the first resource can also be considered as reducing the activation delay of the first resource. Exemplarily, in this scenario, the first resource can be, for example, a normal BWP on a certain Scell of the terminal device. Or, the first resource can be, for example, a certain SPS / CG resource of the terminal device.

[0137] Again, for example, the state of the first resource is activated before the handover and deactivated after the handover. In this scenario, in this embodiment, the first information is used to indicate the state of the first resource, that is: the first information is used to indicate whether to deactivate the first resource. Further, if the first information indicates to deactivate the first resource, when receiving LP-WUS, switch to the primary link of the terminal device and deactivate the first resource, that is, change the state of the first resource from activated to deactivated. It can be understood that in this scenario, reducing the handover delay of the first resource can also be considered as reducing the deactivation delay of the first resource.

[0138] Optionally, the first resource is one of the resources in the first resource group. Further, the first information carried by the access network device in LP-WUS is used to indicate whether to change the state of at least one resource in the first resource group, and the at least one resource includes the first resource.

[0139] For example, it is assumed that the terminal device is configured with multiple Scells, each Scell includes a dormant BWP and a normal BWP, and the multiple Scells are in a dormant state when the terminal device is operating on the secondary link. That is, during the period when the terminal device is operating on the secondary link, the normal BWPs in the multiple Scells are all in the deactivated state. At this time, when the access network device sends LP-WUS, it can include multiple bits in the LP-WUS. The multiple bits correspond to the multiple Scells one by one, and each bit is used to indicate whether the corresponding Scell activates the normal BWP (that is, it can also be considered that each bit is used to indicate whether the corresponding Scell deactivates the dormant BWP). For example, when each bit is 1, it is considered to indicate that the corresponding Scell activates the normal BWP. For the terminal device, when it receives the LP-WUS, if the bit corresponding to a certain Scell included indicates to activate the normal BWP, then the terminal device switches to the primary link and activates the normal BWP of that certain Scell. For example, that certain Scell leaves the Dormant BWP to the downlink BWP corresponding to firstOutsideActiveTimeBWP-Id or firstWithinActiveTimeBWP-Id. It can be understood that in this example, the multiple bits can be considered as the content included in the above first information; correspondingly, the normal BWP of a certain Scell can be considered as the first resource.

[0140] For another example, the terminal device is configured with multiple SPS resources, and the multiple SPS resources are all in the deactivated state when the terminal device is operating on the secondary link. Subsequently, when the access network device wakes up the terminal device through LP-WUS, it can include multiple bits (bit) in the LP-WUS. The multiple bits correspond to the multiple SPS resources one by one. For example, in this scenario, the multiple bits included in the LP-WUS are the bits included in the hybrid automatic repeat request (HARQ) process number field, and the bit corresponds to the SPS sps-ConfigIndex. Each bit is used to indicate whether the corresponding SPS resource is activated.

[0141] It can be seen that in the Figure 7 technical solution shown in this embodiment, after the access network device sends LP-WUS to the terminal device, there is no need to send DCI specifically used to indicate the state of the first resource of the terminal device to the terminal device. Correspondingly, after the terminal device wakes up the primary link (that is, after switching to the primary link for operation), it directly sets the state of the first resource based on the LP-WUS, rather than based on detecting the DCI sent by the access network device. Therefore, it is possible to reduce the delay of switching the state of the first resource after the terminal device switches to the primary link in the scenario where the terminal device is operating on the secondary link.

[0142] Next, in combination with Figure 8 and Figure 9 , a detailed description will be given of the Figure 7 illustrated embodiment. Among them, Figure 8 in the illustrated embodiment, the deactivated Resource 1 is switched to the activated Resource 1 for description, Figure 9 and the embodiment of

[0143] Figure 8 the illustrated method includes steps 810 to step 830. The following details Figure 8 each step in the

[0144] Example method.

[0145] It can be understood that when the terminal device deactivates Resource 1, the state of Resource 1 is switched from the activated state to the deactivated state.

[0146] For example, if Resource 1 is a normal BWP other than the dormant BWP on the first Scell included in the terminal device, and this normal BWP is also referred to as the first BWP. At this time, when the terminal device is operating on the primary link, the access network device may send second information to the terminal device, and the second information is used to instruct the terminal device to sleep on the first Scell; correspondingly, the terminal device sleeps on the first Scell. It can be understood that when the terminal device sleeps on the first Scell, the terminal device will activate the dormant BWP on the first Scell and deactivate the first BWP. Therefore, the second information can be regarded as the indication information for instructing the terminal device to deactivate the first BWP.

[0147] For example, if Resource 1 is one of the at least one SPS resources included in the terminal device, and this SPS resource is also referred to as the first SPS resource. At this time, when the terminal device is operating on the primary link, the access network device sends fifth information to the terminal device, and the fifth information is used to instruct the terminal device to deactivate the first SPS resource; correspondingly, the terminal device deactivates the first SPS resource.

[0148] It should be noted here that only the normal BWP and SPS resources are used as examples, but this does not constitute a limitation of this application.

[0149] Step 820: The terminal device enters the secondary link for operation.

[0150] It can be understood that when the terminal device enters the secondary link for operation, Resource 1 is in the deactivated state.

[0151] Step 830: The access network device sends LP-WUS to the terminal device.

[0152] Step 840: After receiving the LP-WUS, the terminal device switches to the primary link and switches the status of Resource 1 from the deactivated state to the activated state according to the LP-WUS.

[0153] For example, as long as the terminal device receives the LP-WUS, it performs the operations of switching to the primary link of the terminal device and setting the status of Resource 1 to the activated state. Taking Resource 1 as the first BWP described in Step 800, then as long as the terminal device receives the LP-WUS, it switches to the primary link and activates the normal BWP of the first Scell, that is, switches the dormant BWP of the first Scell to the normal BWP, for example, on the BWP corresponding to the existing firstOutsideActiveTimeBWP-Id or firstWithinActiveTimeBWP-Id.

[0154] For another example, the access network device carries Information 1 in the LP-WUS sent to the terminal device, and Information 1 is used to indicate whether to activate Resource 1; correspondingly, if Information 1 indicates to activate Resource 1, when the terminal device receives the LP-WUS, it switches to the primary link and switches the status of Resource 1 from the deactivated state to the activated state.

[0155] It can be seen that in the communication method provided in this embodiment, after receiving the LP-WUS for waking up the primary link, the terminal device not only switches to work on the primary link, but also activates the deactivated Resource 1. It can be understood that under this technical solution, since the primary link of the terminal device does not need to continue to detect the DCI sent by the access network device for activating Resource 1 after being woken up, the delay for the terminal device to activate Resource 1 can be reduced, and the service delay can be further reduced. In addition, it can be understood that for the access network device, this method can also reduce the signaling overhead of the access network device indicating the activation of Resource 1 through DCI.

[0156] Optionally, if the access network device indicates that the terminal device is dormant on the first Scell, since the terminal device still needs to perform some periodic CSI measurements. In this case, after the terminal device executes 810 and enters the secondary link to work, the terminal device needs to switch to the primary link for CSI measurement.

[0157] Optionally, in this embodiment, if the dormant BWP of the first Scell included in the terminal device is in the deactivated state when the terminal device is operating on the secondary link, the CSI measurement in this scenario can be relaxed at this time. For example, the access network device may send third information to the terminal device when the terminal device is operating on the primary link, and the third information is used to indicate the first CSI measurement period when the terminal device performs CSI measurement when the terminal device is dormant on the first Scell; then, the terminal device performs CSI measurement based on the second CSI measurement period, and the second CSI measurement period is greater than the first CSI measurement period. Optionally, the second CSI measurement period may be indicated by the access network device sending fourth information to the terminal device, so the fourth information may also be referred to as new cycle parameter information. For example, the fourth information is carried in the RRC message. It can be understood that through this implementation method, since the CSI measurement period becomes larger, the power consumption of the terminal device can be further reduced.

[0158] Optionally, in this embodiment, if the dormant BWP of the first Scell included in the terminal device is in the deactivated state when the terminal device is operating on the secondary link, the secondary link of the terminal device can undertake the measurement behavior equivalent to the periodic CSI measurement of the primary link (this solution may have corresponding requirements for the secondary link hardware).

[0159] Figure 9 An embodiment from the active state to the deactivated state is shown. In this Figure 9 embodiment, it is described that the terminal devices are all configured with LP-WUS and DCP resources (i.e., the first resource, also referred to as the WUS resource).

[0160] Figure 9 The method shown includes steps 910 to step 930. The following details each Figure 9 step in the exemplary method.

[0161] Step 910, the terminal device 1 enters the secondary link operation.

[0162] Step 920, the access network device sends LP-WUS to the terminal device 1, and the LP-WUS carries information for indicating the deactivation of the WUS resource.

[0163] Step 930, the terminal device switches to the primary link based on the LP-WUS and does not detect signals on the WUS resource.

[0164] That is, after receiving the LP-WUS, the terminal device switches to the primary link and no longer detects signals on the WUS resource.

[0165] Exemplarily, the signal on the WUS resource is called a WUS signal or a DCP signal.

[0166] Optionally, the access network device also uses the LP-WUS to instruct the terminal device 2 to detect signals on the WUS resource; correspondingly, after switching to the primary link based on the LP-WUS, the terminal device 2 also performs the operation of detecting signals on the WUS resource. Optionally, when the terminal device 2 switches to the primary link, if the terminal device does not detect a signal on the WUS resource within a certain period of time, it switches to the secondary link for operation. The certain period of time described here can be predefined by the protocol or configured by the network device, etc. For example, the network device instructs the terminal device through an RRC message or through an SIB broadcast message.

[0167] Optionally, when the access network device instructs the terminal device to detect the WUS signal, if the WUS signal or DCP signal received by the terminal device instructs not to perform PDCCH detection, the access network device can add 1 bit in the WUS signal or DCP signal to instruct the terminal device to enter the primary link for operation, or return to the secondary link for operation.

[0168] The communication method provided in this embodiment uses the LP-WUS to instruct the terminal device whether to continue detecting on the WUS after switching to the primary link. Additionally, it can be understood that this technical solution enables the access network device to be more flexible in instructing different terminal devices.

[0169] Above, through Figures 7 to 9 The method of how to set the status of resources after the terminal device switches to the primary link based on the LP-WUS is introduced. Optionally, in this application, in the scenario where active SPS resources / CG resources are configured in the terminal device, it is also possible to make the terminal device perform behaviors such as receiving or transmitting signals by switching to the primary link at the corresponding positions of the reserved active resources during the detection of the LP-WUS by retaining some active SPS resources / CG resources and deactivating some SPS resources / CG resources. It can be understood that in this case, there is no need for the access network device to send the LP-WUS to wake up the primary link of the terminal device and then instruct the terminal device to detect the PDCCH, thus saving signaling overhead. Below, taking the SPS resources as an example, two implementation methods are described. However, it should be understood that this example does not constitute a limitation of this application. For example, the SPS resources can be replaced with CG resources, or replaced with other resources that can appear periodically.

[0170] Exemplarily, in implementation manner a), before the terminal device enters the secondary link operation, the access network device may send the sixth information to the terminal device, where the sixth information indicates deactivating M SPS resources out of N active SPS resources, that is, the access network device enables the terminal device to deactivate a part of the SPS resources (M SPS resources are deactivated) and retain a part of the active SPS resources (N - M SPS resources remain active). M and N are positive integers, and M is less than N.

[0171] Optionally, in implementation manner a), the SPS period of the M deactivated SPS resources is less than the SPS period of the N - M active SPS resources that are retained. Or in other words, the SPS period corresponding to the M SPS resources is less than the SPS period corresponding to any one of the SPS resources among the N SPS resources other than the M SPS resources.

[0172] Exemplarily, in implementation manner b), a new SPS resource period parameter (corresponding to a larger SPS period) applicable to LP - WUS terminals may be defined in the SPS configuration information (SPS - Config), for example, it may correspond to an increased new ID sps - ConfigIndex. Accordingly, when the terminal device activates LP - WUS, it deactivates the existing SPS resources and activates the new SPS resources under LP - WUS corresponding to the primary link based on the increased new sps - ConfigIndex. Optionally, there may be multiple increased new ID sps - ConfigIndexes. Accordingly, when the terminal device operates on the secondary link, there are multiple active SPS resources. For example, the SPS configuration information (SPS - Config) sent by the access network device defines K SPS resources, where P of the K SPS resources are existing SPS resources, and the remaining K - P are newly added. The SPS period corresponding to the newly added K - P SPS resources is greater than the SPS period corresponding to the P SPS resources. Accordingly, when the terminal device operates on the secondary link, there are multiple active SPS resources.

[0173] In the above text, in combination with Figures 7 to 9 , the communication method of the embodiments of the present application has been described in detail. Next, in combination with Figure 10 and Figure 11 , the communication device provided by the present application will be described in detail.

[0174] Figure 10 It is a structural schematic diagram of a communication device provided by an embodiment of the present application. Specifically, as Figure 10 shown, the device 1000 includes: a transceiver module 1001 and a processing module 1002.

[0175] In the first embodiment, the device 1000 may be applied to a terminal device.

[0176] Specifically, the transceiver module 1001 is configured to receive LP-WUS; the processing module 1002 is configured to switch to the primary link of the terminal device and set the status of the first resource according to the LP-WUS.

[0177] In a possible implementation, the status of the first resource is deactivated during the period when the terminal device operates on the secondary link; the processing module 1002 is further configured to: if receiving LP-WUS, switch to the primary link of the terminal device and set the status of the first resource to activated.

[0178] In a possible implementation, the LP-WUS carries first information, and the first information is used to indicate the status of the first resource; the processing module 1002 is further configured to: when receiving the LP-WUS, switch to the primary link of the terminal device and set the status of the first resource according to the first information.

[0179] In a possible implementation, the first resource is one resource in the first resource group, and the first information is used to indicate the status of at least one resource in the first resource group, and the at least one resource includes the first resource.

[0180] In a possible implementation, the status of the first resource is deactivated during the period when the terminal device operates on the secondary link; the first information is used to indicate the status of the first resource, including: the first information is used to indicate whether to activate the first resource; the switching to the primary link of the terminal device and setting the status of the first resource according to the LP-WUS includes:

[0181] If the first information indicates to activate the first resource, when receiving the LP-WUS, switch to the primary link of the terminal device and activate the first resource.

[0182] In a possible implementation, the first resource is the first bandwidth part (BWP) included in the first secondary cell (Scell), and the first Scell further includes a dormant BWP; wherein, during the period when the terminal device operates on the secondary link, the dormant BWP is activated and the first BWP is deactivated.

[0183] In a possible implementation, the transceiver module 1001 is further configured to: when the terminal device operates on the primary link, receive second information, and the second information is used to indicate that the terminal device goes to sleep on the first Scell; the processing module 1002 is further configured to: in response to the second information, go to sleep on the first Scell; wherein, when going to sleep on the first Scell, the dormant BWP is activated and the first BWP is deactivated.

[0184] In a possible implementation, the transceiver module 1001 is further configured to: when the terminal device operates on the primary link, receive third information, where the third information is used to indicate a first CSI measurement period when the terminal device performs CSI measurement; the processing module 1002 is further configured to: perform CSI measurement based on a second CSI measurement period, where the second CSI measurement period is greater than the first CSI measurement period.

[0185] In a possible implementation, the transceiver module 1001 is further configured to: receive fourth information, where the fourth information is used to indicate the second CSI measurement period.

[0186] In a possible implementation, the first resource is a first SPS resource.

[0187] In a possible implementation, the transceiver module 1001 is further configured to: when the terminal device operates on the primary link, receive fifth information, where the fifth information is used to indicate that the terminal device deactivates the first SPS resource; the processing module 1002 is further configured to: in response to the fifth information, set the state of the first SPS resource to the deactivated state.

[0188] In a possible implementation, the first information is used to indicate the state of the first resource, including: the first information is used to indicate whether to deactivate the first resource; the processing module 1002 is further configured to: if the first information indicates deactivating the first resource and when receiving LP-WUS, switch to the primary link of the terminal device and not perform signal detection on the first resource.

[0189] In a possible implementation, the signal on the first resource is a wake-up signal WUS.

[0190] In a possible implementation, the processing module 1002 is further configured to: if the first information indicates that the first resource is not deactivated and the terminal device does not detect a signal on the first resource within a first duration, switch from the primary link of the terminal device to the secondary link of the terminal device.

[0191] In the second embodiment, the apparatus 1000 can be applied to an access network device.

[0192] Specifically, the transceiver module 1001 is configured to send a low-power wake-up signal LP-WUS, where the LP-WUS carries first information, and the first information is used to indicate the state of the first resource.

[0193] In a possible implementation, the first resource is a resource in a first resource group, the first information is used to indicate the state of at least one resource in the first resource group, and at least one resource includes the first resource.

[0194] In a possible implementation, the state of the first resource is deactivated while the terminal device is operating on the secondary link; the first information is used to indicate the state of the first resource, including: the first information is used to indicate whether to activate the first resource.

[0195] In a possible implementation, the first resource is the first bandwidth part (BWP) included in the first secondary cell (Scell), and the first Scell further includes a dormant BWP; wherein, while the terminal device is operating on the secondary link, the dormant BWP is in an active state and the first BWP is in a deactivated state.

[0196] In a possible implementation, the transceiver module 1001 is configured to send second information while the terminal device is operating on the primary link, and the second information is used to indicate that the terminal device is dormant on the first Scell.

[0197] In a possible implementation, the transceiver module 1001 is configured to send third information and fourth information while the terminal device is operating on the primary link, the third information is used to indicate the first CSI measurement period when the terminal device performs CSI measurement, and the fourth information is used to indicate the second CSI measurement period when the terminal device performs CSI measurement.

[0198] In a possible implementation, the first resource is the first semi-persistent scheduling (SPS) resource.

[0199] In a possible implementation, the transceiver module 1001 is configured to send fifth information while the terminal device is operating on the primary link, and the fifth information is used to indicate that the terminal device deactivates the first SPS resource.

[0200] In a possible implementation, the first information is used to indicate the state of the first resource, including: the first information is used to indicate whether to deactivate the first resource.

[0201] In a possible implementation, the signal on the first resource is the wake-up signal (WUS).

[0202] Figure 11 It is a structural schematic diagram of a communication device provided in another embodiment of the present application. Figure 11 The illustrated device can be used to execute the method described in any of the foregoing embodiments.

[0203] As Figure 11 As shown, the device 1100 of this embodiment includes: a memory 1101 and a processor 1102. In one implementation, the device 1100 further includes a communication interface 1103 and a bus 1104. Among them, the memory 1101, the processor 1102, and the communication interface 1103 are communicatively connected to each other through the bus 1104.

[0204] The memory 1101 can be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1101 can store a program. When the program stored in the memory 1101 is executed by the processor 1102, the processor 1102 is configured to execute Figures 7 to 9 each step of the method shown.

[0205] The processor 1102 can be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute relevant programs to implement the method shown in this application Figures 7 to 9 shown.

[0206] The processor 1102 can also be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the method of the embodiment of this application Figures 7 to 9 can be completed by the integrated logic circuit in the hardware of the processor 1102 or the instructions in the form of software.

[0207] The above-mentioned processor 1102 can also be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or the processor can also be a conventional processor, etc.

[0208] The steps of the method disclosed in combination with the embodiments of this application can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read only memory, a programmable read only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 1101. The processor 1102 reads the information in the memory 1101 and combines its hardware to complete the functions required to be executed by the units included in the device of this application. For example, it can execute Figures 7 to 9 each step / function of the embodiment shown.

[0209] The communication interface 1103 can use, but is not limited to, transceiver devices such as transceivers to implement communication between the device 1100 and other devices or communication networks.

[0210] The bus 1104 can include a path for transmitting information between various components of the device 1100 (for example, the memory 1101, the processor 1102, and the communication interface 1103).

[0211] It should be understood that the device 1100 shown in the embodiments of the present application can be an electronic device, or can also be a chip configured in an electronic device. The device 1100 can be deployed in a terminal device or can also be deployed in a network device.

[0212] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented using software, the above embodiments 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 or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be an available medium that the computer can access or a data storage device such as a server or data center that contains one or more collections of available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0213] It should be understood that the term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Here, A and B can be singular or plural. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after, but it may also represent an "and / or" relationship, which can be specifically understood by referring to the context before and after.

[0214] In this application, "at least one" means one or more, and "a plurality" means two or more. "At least one of the following" or a similar expression means any combination of these items, including any combination of single item or plural items. For example, at least one of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple.

[0215] It should be understood that in various embodiments of this application, the magnitudes of the sequence numbers of the above - mentioned processes do not mean the order of execution is prior or posterior. The order of execution of each process should be determined by its function and internal logic, and should not constitute a limitation to the implementation process of the embodiments of this application.

[0216] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0217] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0218] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, 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 displayed or discussed mutual coupling, direct coupling, or communication connection can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be in an electrical, mechanical, or other forms.

[0219] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0220] In addition, in each embodiment of the present application, each functional unit may be integrated into one processing unit, may exist separately as individual physical units, or two or more units may be integrated into one unit.

[0221] If the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories, random access memories, magnetic disks, or optical discs.

Claims

1. A communication method, characterized in that, Applied to a terminal device, including: Receiving a low-power wake-up signal LP-WUS; According to the LP-WUS, switching to the primary link of the terminal device and setting the state of a first resource.

2. The method according to claim 1, wherein The state of the first resource is deactivated during the period when the terminal device operates on the secondary link; The switching to the primary link of the terminal device and setting the state of the first resource according to the LP-WUS includes: If the LP-WUS is received, switching to the primary link of the terminal device and setting the state of the first resource to the active state.

3. The method according to claim 1, characterized in that The LP-WUS carries first information, and the first information is used to indicate the state of the first resource; The switching to the primary link of the terminal device and setting the state of the first resource according to the LP-WUS includes: When the LP-WUS is received, switching to the primary link of the terminal device and setting the state of the first resource according to the first information.

4. The method according to claim 3, wherein The first resource is one of the resources in a first resource group, the first information is used to indicate the state of at least one resource in the first resource group, and the at least one resource includes the first resource.

5. The method according to claim 3 or 4, characterized in that, The state of the first resource is deactivated during the period when the terminal device operates on the secondary link; The first information is used to indicate the state of the first resource, including: the first information is used to indicate whether to activate the first resource; The switching to the primary link of the terminal device and setting the state of the first resource according to the LP-WUS includes: If the first information indicates to activate the first resource, when the LP-WUS is received, switching to the primary link of the terminal device and activating the first resource.

6. The method according to claim 5, wherein The first resource is the first bandwidth part BWP included in a first secondary cell Scell, and the first Scell further includes a dormant BWP; Wherein, during the period when the terminal device operates on the secondary link, the dormant BWP is in the active state and the first BWP is in the deactivated state.

7. The method according to claim 6, wherein The method further includes: When the terminal device operates on the primary link, receiving second information, where the second information is used to indicate that the terminal device goes to sleep on the first Scell; In response to the second information, going to sleep on the first Scell; Wherein, when going to sleep on the first Scell, the dormant BWP is in the active state and the first BWP is in the deactivated state.

8. The method according to claim 7, wherein The method further includes: When the terminal device operates on the primary link, receiving third information, where the third information is used to indicate a first CSI measurement period when the terminal device performs channel state information CSI measurement; Performing CSI measurement based on a second CSI measurement period, where the second CSI measurement period is greater than the first CSI measurement period.

9. The method according to claim 8, wherein The method further includes: Receiving fourth information, where the fourth information is used to indicate the second CSI measurement period.

10. The method according to claim 5, wherein The first resource is a first semi-persistent scheduling SPS resource.

11. The method according to claim 10, wherein The method further includes: When the terminal device operates on the primary link, receiving fifth information, where the fifth information is used to indicate that the terminal device deactivates the first SPS resource; In response to the fifth piece of information, set the state of the first SPS resource to the deactivated state.

12. The method according to claim 3 or 4, characterized in that, The first piece of information is used to indicate the state of the first resource, including: the first piece of information is used to indicate whether to deactivate the first resource; According to the LP-WUS, switch to the primary link of the terminal device and set the state of the first resource, including: If the first piece of information indicates deactivating the first resource, when receiving the LP-WUS, switch to the primary link of the terminal device and do not perform signal detection on the first resource.

13. The method according to claim 12, characterized in that, The signal on the first resource is the wake-up signal WUS.

14. The method according to claim 12 or 13, characterized in that, The method further includes: If the first piece of information indicates that the first resource is not deactivated and the terminal device does not detect a signal on the first resource within a first time period, switch from the primary link of the terminal device to the secondary link of the terminal device.

15. A communication method, characterized in that, Applied to an access network device, including: Send a low-power wake-up signal LP-WUS, where the LP-WUS carries the first piece of information, and the first piece of information is used to indicate the state of the first resource.

16. The method according to claim 15, characterized in that The first resource is one resource in the first resource group, and the first piece of information is used to indicate the state of at least one resource in the first resource group, and the at least one resource includes the first resource.

17. The method according to claim 15 or 16, characterized in that The state of the first resource is the deactivated state during the period when the terminal device operates on the secondary link; The first piece of information is used to indicate the state of the first resource, including: the first piece of information is used to indicate whether to activate the first resource.

18. The method according to claim 17, wherein The first resource is the first bandwidth part BWP included in the first secondary cell Scell, and the first Scell further includes a dormant BWP; Wherein, during the period when the terminal device operates on the secondary link, the dormant BWP is in the activated state and the first BWP is in the deactivated state.

19. The method according to claim 18, wherein The method further includes: When the terminal device operates on the primary link, send a second piece of information, and the second piece of information is used to indicate that the terminal device goes dormant on the first Scell.

20. The method according to claim 19, wherein The method further includes: When the terminal device operates on the primary link, send a third piece of information and a fourth piece of information, the third piece of information is used to indicate the first CSI measurement period when the terminal device performs channel state information CSI measurement, and the fourth piece of information is used to indicate the second CSI measurement period when the terminal device performs CSI measurement.

21. The method according to claim 15, characterized in that, The first resource is the first semi-persistent scheduling SPS resource.

22. The method according to claim 21, wherein The method further includes: When the terminal device operates on the primary link, send a fifth piece of information, and the fifth piece of information is used to indicate that the terminal device deactivates the first SPS resource.

23. The method according to claim 15 or 16, characterized in that, The first piece of information is used to indicate the state of the first resource, including: the first piece of information is used to indicate whether to deactivate the first resource.

24. The method according to claim 23, wherein The signal on the first resource is the wake-up signal WUS.

25. A communication device, characterized in that, Includes: A processor, The processor is used to cause the communication device to implement the method according to any one of claims 1 to 14 by executing a computer program and / or through logic circuits.

26. A communication device, characterized in that, Includes: A processor, The processor is configured to cause the communication device to implement the method according to any one of claims 15 to 24 by executing a computer program and / or by means of logic circuitry.

27. A computer-readable medium, characterized in that, The computer-readable medium stores program code for execution by a computer, the program code including instructions for performing the method according to any one of claims 1 to 14 or 15 to 24.

28. A computer program product, characterized in that, The computer program product includes computer program code which, when run on a computer, causes the computer to implement the method according to any one of claims 1 to 14 or 15 to 24.

29. A chip, characterized in that, Comprising at least one processor and a communication interface, the communication interface and the at least one processor are interconnected by a line, and the at least one processor is configured to run a computer program or instructions to perform the communication method according to any one of claims 1 to 14 or 15 to 24.

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