Communication method and communication device

Abstract

The invention provides a communication method and a communication device. The method may comprise: a terminal device receiving a wake-up signal, the wake-up signal comprising a first identifier, the first identifier indicating monitoring of a PDCCH in a first group of cells, the first group of cells comprising at least one cell, the first group of cells being a group of cells in N groups of cells, the first identifier being one of N identifiers, different identifiers in the N identifiers indicate the terminal equipment to monitor the PDCCH in different groups of cells in the N groups of cells, and N is an integer greater than 1; and the terminal equipment selects to monitor the PDCCH in the first group of cells according to the first identifier. Based on this, not only can the combination of the wake-up signal and the CA be realized, but also the PDCCH monitoring of the terminal equipment in different cells (or different cell groups) can be respectively controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, and more particularly, to a communication method and a communication apparatus. BACKGROUND

[0002] The terminal device can receive a wake-up signal through a single low-power small circuit, such as a wake-up radio (WUR), and the main receiver can be in a sleep state. When the terminal device detects the wake-up signal through the WUR, the terminal device triggers the wake-up of the main receiver, such as the terminal device being woken up to monitor a physical downlink control channel (PDCCH).

[0003] In a connected state, the terminal device can be configured with carrier aggregation (CA). In the scenario where the terminal device is configured with CA, how the wake-up signal works is a problem worth considering. SUMMARY

[0004] The present application provides a communication method and a communication apparatus, which can not only realize the combination of the wake-up signal and CA, but also can control the PDCCH monitoring of the terminal device in different cells (or different cell groups) respectively.

[0005] In a first aspect, a communication method is provided. The method can be applied to the terminal side, that is, the method can be executed by a terminal device, or can be executed by a component (such as a chip or a chip system or a circuit or a communication module) of the terminal device, and the present application does not limit this. Hereinafter, the terminal device is mainly taken as an example for description.

[0006] The method can include: receiving a wake-up signal, the wake-up signal including a first identifier, the first identifier indicating to monitor a physical downlink control channel (PDCCH) in a first group of cells, the first group of cells including at least one cell, the first group of cells being one of N groups of cells, the first identifier being one of N identifiers, different identifiers of the N identifiers indicating to monitor the PDCCH in different groups of cells of the N groups of cells, N being an integer greater than 1; and monitoring the PDCCH in the first group of cells according to the first identifier.

[0007] Based on the above technical solution, the terminal device can determine in which cell group (or cell) to monitor the PDCCH based on which of the N identifiers is included in the received wake-up signal. For example, if the terminal device receives a wake-up signal containing an identifier corresponding to the first group of cells (i.e., the first identifier), the terminal device monitors the PDCCH in the first group of cells, but not in the remaining groups of cells in the N groups of cells. Based on this, PDCCH monitoring on different cell groups can be respectively controlled by the wake-up signal.

[0008] Conversely, if the method of waking up the terminal device only by the unique identifier of the terminal is used, PDCCH monitoring on different cell groups cannot be respectively controlled by the wake-up signal. In this way, even if the arrived service has only a small amount of data, the network side may still wake up the terminal to monitor the PDCCH on all cells, which will waste power consumption. Therefore, in the above technical solution, PDCCH monitoring on different cell groups is respectively controlled by the wake-up signal, which can reduce power consumption.

[0009] Alternatively, conversely, if a bitmap is used to indicate which cell groups to monitor the PDCCH, at least N bits of bitmap are needed to indicate which cell group of the N cell groups to monitor the PDCCH. If the PDCCH is only monitored on a small part of the N cell groups, then for the cell groups that do not need to monitor the PDCCH, the corresponding bits still need to be carried in the wake-up signal, which will waste a part of the bits and cause the problem of large resource overhead. Therefore, by the present application, different identifiers correspond to different cell groups, so that one wake-up signal controls the PDCCH monitoring on one cell group, and the information (such as identifier) of the cell group that does not need to monitor the PDCCH does not need to be sent, thereby solving the problems of bit waste and large resource overhead in the wake-up signal.

[0010] In combination with the first aspect, in some implementations of the first aspect, before receiving the wake-up signal, the method further includes: receiving first configuration information, the first configuration information including information of M cells configured for the terminal device, the N groups of cells including cells belonging to the M cells, and M being an integer greater than 1.

[0011] In combination with the first aspect, in some implementations of the first aspect, the first group of cells is any one of: all cells configured for the terminal device within a frequency range 1 (FR1); all cells configured for the terminal device within a frequency range 2 (FR2); all cells configured for the terminal device; and a group of cells configured for the terminal device.

[0012] Based on the technical solution, the N groups of cells can be divided based on frequency ranges, FR1 and / or FR2. For example, the N groups of cells can include at least one of all cells configured for the terminal device within FR1, all cells configured for the terminal device within FR2, all cells configured for the terminal device within FR1 and FR2, all cells configured for the terminal device, and a certain group of cells configured for the terminal device (e.g., the network device groups a plurality of cells configured for the terminal device).

[0013] With reference to the first aspect, in some implementations of the first aspect, the N groups of cells further include a second group of cells, the second group of cells including at least one cell, and after monitoring PDCCH in the first group of cells, the method further includes: receiving control information, the control information indicating monitoring PDCCH in the second group of cells; and monitoring PDCCH in the second group of cells according to the control information.

[0014] Based on the technical solution, after the terminal device determines in which group of cells to monitor PDCCH based on the identifier carried in the wake-up signal, the network device can further trigger the terminal device to monitor PDCCH in the remaining groups of cells through control signaling.

[0015] With reference to the first aspect, in some implementations of the first aspect, the method further includes: receiving second configuration information, the second configuration information indicating a correspondence between the N identifiers and the N groups of cells.

[0016] With reference to the first aspect, in some implementations of the first aspect, the method is applied to a terminal device, and the terminal device is in a connected state.

[0017] In a second aspect, a communication method is provided. The method can be applied to the network side, that is, the method can be executed by a network device or a component (e.g., a chip or a chip system or a circuit or a communication module) of the network device, and the present application does not limit this. Hereinafter, the network device will be mainly taken as an example for description.

[0018] The method can include: transmitting a wake-up signal, the wake-up signal including a first identifier, the first identifier indicating monitoring a physical downlink control channel (PDCCH) in a first group of cells, the first group of cells including at least one cell, the first group of cells being one of N groups of cells, the first identifier being one of N identifiers, different identifiers of the N identifiers indicating monitoring PDCCH in different groups of cells of the N groups of cells, and N being an integer greater than 1. Optionally, the method further includes: transmitting PDCCH in the first group of cells.

[0019] With reference to the second aspect, in some implementations of the second aspect, before the sending the wake-up signal, the method further includes: sending first configuration information, the first configuration information including information of M cells configured for the terminal device, the N groups of cells including cells belonging to the M cells, M being an integer greater than 1.

[0020] With reference to the second aspect, in some implementations of the second aspect, the first group of cells is any one of: all cells configured for the terminal device within a frequency range 1 FR1; all cells configured for the terminal device within a frequency range 2 FR2; all cells configured for the terminal device; a group of cells configured for the terminal device.

[0021] With reference to the second aspect, in some implementations of the second aspect, the N groups of cells further include a second group of cells, the second group of cells including at least one cell, and the method further includes: sending control information, the control information indicating monitoring PDCCH within the second group of cells.

[0022] With reference to the second aspect, in some implementations of the second aspect, the method further includes: sending second configuration information, the second configuration information indicating a correspondence between the N identifiers and the N groups of cells.

[0023] The advantages and possible designs related to the second aspect can be refer to the related description in the first aspect, which will not be repeated here.

[0024] In a third aspect, a communication method is provided. The method can be applied to the terminal side, i.e., the method can be executed by a terminal device, or can be executed by a component (such as a chip or a chip system or a circuit or a communication module) of the terminal device, which is not limited in the present application. Hereinafter, the terminal device will be mainly taken as an example for description.

[0025] The method can include: receiving a wake-up signal in a first time domain resource; based on receiving the wake-up signal in the first time domain resource, monitoring a physical downlink control channel PDCCH in a first group of cells; wherein the first group of cells includes at least one cell, the first group of cells being one of N groups of cells, the first time domain resource being one of N groups of time domain resources, different groups of time domain resources of the N groups of time domain resources being used to carry a wake-up signal indicating monitoring PDCCH in different groups of cells of the N groups of cells, N being an integer greater than 1.

[0026] Based on the technical solution, the terminal device can determine in which cell group (or cell) to monitor the PDCCH based on the time domain resource where the received wake-up signal is located. For example, if the terminal device receives the wake-up signal in the first time domain resource, the terminal device monitors the PDCCH in the first group of cells, instead of monitoring the PDCCH in the remaining group of cells in the N groups of cells. Based on this, the PDCCH monitoring on different groups of cells can be respectively controlled by the wake-up signal.

[0027] Conversely, if the method of waking up the terminal device only by the unique identifier of the terminal is adopted, the PDCCH monitoring on different groups of cells cannot be respectively controlled by the wake-up signal. In this way, even if the arrived service has only a small amount of data, the network device may still wake up the terminal to monitor the PDCCH on all cells, which will waste power consumption. Therefore, in the above technical solution, the PDCCH monitoring on different groups of cells is respectively controlled by the time domain resource where the wake-up signal is located, which can reduce power consumption.

[0028] Alternatively, conversely, if the bitmap method is used to indicate which group of cells to monitor the PDCCH, at least N bits of bitmap are needed to indicate which group of cells in the N groups of cells to monitor the PDCCH. If the PDCCH is only monitored on a small part of the N groups of cells, then for the group of cells that does not need to monitor the PDCCH, the corresponding bits still need to be carried in the wake-up signal, which will waste a part of the bits and cause the problem of large resource overhead. Therefore, by the present application, different groups of time domain resources correspond to different groups of cells, so that one wake-up signal controls the PDCCH monitoring on one group of cells, and the related information (such as identifier) of the group of cells that does not need to monitor the PDCCH does not need to be sent, thereby solving the problems of bit waste in the wake-up signal and large resource overhead.

[0029] In combination with the third aspect, in some implementations of the third aspect, before receiving the wake-up signal in the first time domain resource, the method further includes: receiving first configuration information, the first configuration information including information of M cells configured for the terminal device, the N groups of cells including cells belonging to the M cells, and M being an integer greater than 1.

[0030] In combination with the third aspect, in some implementations of the third aspect, the first group of cells is any one of: all cells configured for the terminal device within a frequency range 1 FR1; all cells configured for the terminal device within a frequency range 2 FR2; all cells configured for the terminal device; and a group of cells configured for the terminal device.

[0031] In some implementations of the third aspect, in combination with the third aspect, the N groups of cells further include a second group of cells including at least one cell, after monitoring the PDCCH in the first group of cells, the method further includes: receiving control information, the control information indicating monitoring the PDCCH in the second group of cells; and monitoring the PDCCH in the second group of cells according to the control information.

[0032] In some implementations of the third aspect, in combination with the third aspect, the method further includes: receiving second configuration information, the second configuration information indicating a correspondence between the N groups of time domain resources and the N groups of cells.

[0033] In some implementations of the third aspect, in combination with the third aspect, the wake-up signal includes first information of N information, the first information indicating that one terminal device or one group of terminal devices monitors the PDCCH, different information of the N information indicating that different terminal devices or different groups of terminal devices monitor the PDCCH.

[0034] Based on the above technical solutions, one wake-up signal is used to wake up one terminal device or one group of terminal devices, so that compared with the bitmap mode indicating which terminal device or which group of terminal devices to wake up, the present application can solve the problem of bit waste and large resource overhead in the wake-up signal.

[0035] In some implementations of the third aspect, in combination with the third aspect, the method is applied to a terminal device, and the terminal device is in a connected state.

[0036] A fourth aspect provides a communication method. The method can be applied to a network side, that is, the method can be executed by a network device or a component (such as a chip or a chip system or a circuit or a communication module) of the network device, and the present application does not limit this. Hereinafter, the network device is mainly taken as an example for description.

[0037] The method can include: transmitting a wake-up signal in a first time domain resource, the first time domain resource being one of N groups of time domain resources, different groups of time domain resources of the N groups of time domain resources being used to carry a wake-up signal indicating monitoring a physical downlink control channel (PDCCH) in different groups of cells of N groups of cells, N being an integer greater than 1. Optionally, the method further includes: transmitting the PDCCH in the first group of cells.

[0038] In some implementations of the fourth aspect, in combination with the fourth aspect, the method further includes: transmitting first configuration information, the first configuration information including information of M cells configured for a terminal device, cells included in the N groups of cells belonging to the M cells, M being an integer greater than 1.

[0039] In some implementations of the fourth aspect, in combination with the fourth aspect, the first group of cells is any one of: all cells configured for the terminal device within a frequency range 1 (FR1); all cells configured for the terminal device within a frequency range 2 (FR2); all cells configured for the terminal device; a group of cells configured for the terminal device.

[0040] In some implementations of the fourth aspect, in combination with the fourth aspect, the N groups of cells further include a second group of cells, and the method further includes: transmitting control information, the control information indicating to monitor PDCCH within the second group of cells.

[0041] In some implementations of the fourth aspect, in combination with the fourth aspect, the method further includes: transmitting second configuration information, the second configuration information indicating a correspondence between the N groups of time domain resources and the N groups of cells.

[0042] In some implementations of the fourth aspect, in combination with the fourth aspect, the wake-up signal includes a first information of the N information, the first information indicating one terminal device or one group of terminal devices to monitor PDCCH, and different information of the N information indicating different terminal devices or different groups of terminal devices to monitor PDCCH.

[0043] The beneficial effects and possible designs related to the fourth aspect can be referred to the related description of the third aspect, and will not be repeated here.

[0044] In a fifth aspect, a communication apparatus is provided, which is configured to execute the method in any one of the first aspect to the fourth aspect and any possible implementation thereof. Specifically, the apparatus can include units and / or modules for performing the method in any one of the first aspect to the fourth aspect and any possible implementation thereof, such as a processing unit and / or a communication unit.

[0045] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device). When the apparatus is a communication device, the communication unit can be a transceiver, or an input / output interface; and the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0046] In another implementation, the apparatus is a chip, a chip system or a circuit or a communication module for a communication device (e.g., a terminal device, or a network device). When the apparatus is a chip, a chip system or a circuit for a communication device, the communication unit can be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit on the chip, chip system or circuit, etc.; and the processing unit can be at least one processor, a processing circuit or a logic circuit, etc.

[0047] In a sixth aspect, a communication apparatus is provided, the apparatus comprising at least one processor configured to cause the apparatus to perform the method in any one of the first aspect to the fourth aspect and any possible implementation thereof.

[0048] Optionally, the at least one processor is configured to execute computer program or instructions to perform the method in any one of the first aspect to the fourth aspect and any possible implementation thereof.

[0049] Optionally, the apparatus further comprises a memory for storing the computer program or instructions.

[0050] Optionally, the at least one processor is coupled with a memory for storing the computer program or instructions. The memory can be external to the apparatus.

[0051] Optionally, the apparatus further comprises a communication interface through which the processor reads the instructions on the memory. It can be understood that the communication interface is coupled with the processor, and can be used to input the computer program or instructions to the processor, or output the information in the processor.

[0052] For the operations involved in sending and acquiring / receiving, if there is no special description, or if it does not contradict with the actual role or inherent logic in the related description, it can be understood as output, input, etc. operations, or as sending and receiving operations performed by radio frequency circuit and antenna, which are not limited in the present application.

[0053] In an implementation manner, the apparatus is a communication device (e.g., a terminal device, or a network device).

[0054] In another implementation manner, the apparatus is a chip, a chip system or a circuit or a communication module for a communication device (e.g., a terminal device, or a network device). Optionally, the chip is a Modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core.

[0055] In a seventh aspect, a computer readable storage medium is provided, the computer readable medium having stored thereon computer programs (e.g., program codes) or instructions that, when run on a communication apparatus, cause the communication apparatus to perform the method in any one of the first aspect to the fourth aspect and any possible implementation thereof.

[0056] In an eighth aspect, a computer program product including instructions, which when executed on a computer, cause the computer to perform the method according to any one of the first aspect to the fourth aspect and any possible implementation thereof.

[0057] In a ninth aspect, a communication system is provided, including a first communication apparatus and a second communication apparatus. The first communication apparatus is configured to perform the method provided in any one of the first aspect and the implementation forms thereof, and the second communication apparatus is configured to perform the method provided in any one of the second aspect and the implementation forms thereof. Alternatively, the first communication apparatus is configured to perform the method provided in any one of the third aspect and the implementation forms thereof, and the second communication apparatus is configured to perform the method provided in any one of the fourth aspect and the implementation forms thereof. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 is a schematic diagram of a wireless communication system suitable for embodiments of the application.

[0059] Figure 2 is a schematic diagram of a main circuit and a wake-up circuit.

[0060] Figure 3 is a schematic diagram of a waveform when a signal is modulated using OOK.

[0061] Figure 4 is a schematic diagram of a communication method 400 according to an embodiment of the application.

[0062] Figure 5 is a schematic diagram of the relationship between an ID and a frequency range or a cell group suitable for embodiments of the application.

[0063] Figure 6 is another schematic diagram of the relationship between an ID and a frequency range or a cell group suitable for embodiments of the application.

[0064] Figure 7 is another schematic diagram of the relationship between an ID and a frequency range or a cell group suitable for embodiments of the application.

[0065] Figure 8 is a schematic diagram of a communication method 800 according to an embodiment of the application.

[0066] Figure 9 is a schematic diagram of the relationship between a time domain resource and a frequency range or a cell group suitable for embodiments of the application.

[0067] Figure 10 is another schematic diagram of the relationship between a time domain resource and a frequency range or a cell group suitable for embodiments of the application.

[0068] Figure 11 is another schematic diagram of the relationship between a time domain resource and a frequency range or a cell group suitable for embodiments of the application.

[0069] Figure 12 FIG. 12 is a schematic diagram of a communication apparatus 1200 provided by an embodiment of the present application.

[0070] Figure 13 FIG. 13 is a schematic diagram of another communication apparatus 1300 provided by an embodiment of the present application.

[0071] Figure 14 FIG. 14 is a schematic diagram of a chip system 1400 provided by an embodiment of the present application. DETAILED DESCRIPTION

[0072] The technical solutions in the present application will be described below with reference to the drawings.

[0073] Before introducing the solutions of the present application, the following points are explained.

[0074] (1) In the present application, "indication" can include direct indication, indirect indication, explicit indication, implicit indication, and the like. When describing that certain indication information indicates A, it can be understood that the indication information carries A, carries an identifier of A, carries B having a correlation relationship with A, carries an identifier of B having a correlation relationship with A, and the like. In other words, if the receiving side of certain indication information can determine A according to the indication information, it can be described that the indication information indicates A, and the specific determination manner is not limited. When it is understood that the indication information carries A, "indication" can be replaced by "includes", and at this time, similar to the expression "sending / receiving indication information, the indication information indicates A", it can be replaced by "sending / receiving A".

[0075] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or an index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information has a correlation relationship with the to-be-indicated information. The to-be-indicated information can also be only indicated in part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, a protocol stipulates), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending occasion of these sub-information can be the same or different.

[0076] (2) In this application, the expression " / " is used to represent the relationship of "or" between the objects associated in front and back; for example, A / B can represent: A or B. The expression "and / or" is used to represent the relationship of both and and or between the objects associated in front and back; for example, A and / or B can represent the following cases: A exists alone, B exists alone, A and B exist together, wherein A, B can be single or multiple. "At least one of the following" or similar expressions are used to represent any combination of the listed items; for example, at least one of A, B and (or) C can represent the following cases: A exists alone, B exists alone, C exists alone, A and B exist together, B and C exist together, A and C exist together, A, B and C exist together, wherein A, B, C can be single or multiple.

[0077] (3) In this application, "send" and "receive" represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include direct transmission through the air interface, or indirect transmission through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information being YY, which can include direct reception from YY through the air interface, or indirect reception from YY through the air interface from other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0078] (4) In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0079] (5) In this application, "first", "second", and "#1", "#2", "#A" are only for convenience of description, used to distinguish objects, and do not limit the scope of the embodiments of the present application. It is not used to describe the order or sequence of the characteristics. It should be understood that the objects thus described can be interchanged under appropriate circumstances in order to describe solutions other than the embodiments of the present application.

[0080] (6) In this application, "predefined" can mean standard protocol predefined, or can also mean pre-agreed or pre-negotiated between devices. Among them, "protocol" can refer to standard protocols in the field of communication, which can include fourth generation (4G) mobile communication technology (also known as Long Term Evolution, LTE), fifth generation (5G) mobile communication technology (also known as New Radio, NR), Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), Worldwide Interoperability for Microwave Access (WiMAX), Bluetooth, Z-Wave, ZigBee, Wireless Fidelity (Wi-Fi) (IEEE 802.11), etc. tha fifth generation (5G) network, a new radio (NR) network, a 5.5G network, and a related protocol applied to a future communication network, and the present application is not limited in this regard. th a fifth generation (5G) network, a new radio (NR) network, a 5.5G network, and a related protocol applied to a future communication network, and the present application is not limited in this regard.

[0081] (7) In the present application, the words “exemplary”, “for example”, and the like are used to mean example, illustration, or description. Any embodiment or design solution described as “exemplary” in the present application should not be interpreted as being more preferred or having greater advantages than other embodiments or design solutions. Rather, the word “exemplary” is used to present concepts in a particular manner. In the embodiments of the present application, “of”, “corresponding”, and “corresponding” are sometimes used interchangeably, and it should be pointed out that when their differences are not emphasized, the meanings expressed are consistent.

[0082] First, let's introduce the communication system applicable to the present application.

[0083] The technical solutions provided by the present application can be applied to various communication systems, such as a fifth generation (5th generation, 5G) or new radio (new radio, NR) system, a long term evolution (long term evolution, LTE) system, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD) system, etc. The technical solutions provided by the present application can also be applied to future communication network systems. The technical solutions provided by the present application can also be applied to device to device (device to device, D2D) communication, vehicle-to-everything (vehicle-to-everything, V2X) communication, machine to machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), and internet of things (internet of things, IoT) communication systems. The technical solutions provided by the present application can also be applied to non-terrestrial communication network (non-terrestrial network, NTN) systems such as inter-satellite communication and satellite communication.

[0084] As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with a base station. The satellite can be a base station or a terminal device. The satellite can refer to a drone, a hot air balloon, a low earth orbit satellite, a medium earth orbit satellite, a high earth orbit satellite, etc. The satellite can also refer to a non-ground base station or a non-ground device, etc.

[0085] As an example, V2X communication can include vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-network (V2N) communication, etc.

[0086] A device in a communication system can send a signal to another device or receive a signal from another device. The signal can include information, signaling, or data, etc. The device can also be replaced by an entity, a network entity, a communication device, a communication module, a node, a communication node, etc. The device is taken as an example for description in embodiments of the present application.

[0087] The terminal device in the embodiments of the present application can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal device can include various devices with wireless communication functions, which can be used to connect people, things, machines, etc. The terminal device can be widely used in various scenarios, such as cellular communication, D2D, V2X, peer to peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city UAV, robot, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device can be a user equipment (UE) of the 3rd generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handset, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handset, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-copter, a quad-copter, or an airplane, etc.), a ship, a remote control device, a smart home device, an industrial device, a transport vehicle with wireless communication function, a communication module, a road side unit (RSU) with terminal function, or a device built in the above-mentioned device (such as a communication module, a modem or a chip in the above-mentioned device, etc.), or other processing devices connected to the wireless modem.

[0088] It should be understood that in some scenarios, the UE can also be used as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X, D2D or P2P scenarios, etc.

[0089] In embodiments of the present application, the apparatus for implementing the function of the terminal device, i.e., the terminal apparatus, can be a terminal device or an apparatus capable of supporting the terminal device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the terminal device. In embodiments of the present application, the chip system can be composed of a chip or can include a chip and other discrete devices. In addition, the apparatus can further be configured with program instructions for performing the corresponding communication function.

[0090] The network device in embodiments of the present application can be a device or a module with a corresponding communication function. The network device can be a device for communicating with a terminal device, which can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmission point, primary station, secondary station, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, a modem, or a chip for being disposed in the foregoing devices or apparatuses. The base station can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a network side device in a future communication network, a device assuming a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. Embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0091] A base station can be fixed, or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, with one or more cells moving according to the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0092] In some deployments, the network device mentioned in embodiments of the present application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)), and a DU node.

[0093] In some deployments, a plurality of RAN nodes cooperate to assist a terminal device to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, a RAN node can be a CU, a DU, a CU-CP, a CU-UP, or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can also be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit, such as an RRU, an AAU, or an RRH.

[0094] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, the wireless access network can also be an open radio access network (O-RAN) architecture, in which the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). Any of the CU (or CU-CP, CU-UP), DU, and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0095] In the embodiments of the present application, the device for implementing the function of the network device can be a network device, or a device capable of supporting the network device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In addition, program instructions for performing corresponding communication functions can also be configured in the device. In the embodiments of the present application, only the device for implementing the function of the network device is taken as an example for description, and the scheme of the embodiments of the present application is not limited.

[0096] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; and can also be deployed on aircraft, balloons and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application.

[0097] In combination Figure 1 A communication system suitable for the embodiments of the present application is briefly introduced as follows.

[0098] Referring to Figure 1 , as an example, Figure 1 is a schematic diagram of a wireless communication system suitable for the embodiments of the present application. As shown in Figure 1 , the wireless communication system includes a wireless access network 100. The wireless access network 100 can be a next-generation (for example, future or higher version) wireless access network, or a traditional (for example, 5G, 4G, 3G or 2G) wireless access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be connected to each other or connected to one or more network devices (110a, 110b, collectively referred to as 110) in the wireless access network 100. The network elements in the wireless communication system are connected through an interface (for example, NG, Xn), or connected through an air interface.

[0099] Among them, when the network device and the terminal device communicate, the network device can manage one or more cells, and each cell can include at least one terminal device. The cell can be understood as an area within the coverage range of the wireless signal of the network device.

[0100] Figure 1 This is only a schematic diagram, and the wireless communication system can also include other devices, such as core network devices, wireless relay devices and / or wireless backhaul devices, etc., which are not shown in Figure 1 .

[0101] In order to facilitate the understanding of the embodiments of the present application, the terms involved in the present application are briefly explained.

[0102] 1、wake up circuit: or called wake up receiver / radio (WUR) or low-power wake up receiver (LP-WUR) or wake up module, which can be understood as a separate low-power small circuit, such as a circuit used by a terminal device in an idle state. The low-power small circuit can be implemented using a simple structure of a separate small circuit or chip, and the power consumption is low. It can be understood that the wake up circuit is only named for distinction, and its specific name does not limit the protection scope of the present application, for example, without loss of generality, the wake up circuit can also be described as a first circuit (or a first module). Hereinafter, it is uniformly described as a wake up circuit.

[0103] The signal received by the terminal device through the wake up circuit can be called as transmission on a wake up link, wherein the wake up link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity. It can be understood that the wake up link is only named for distinction, and its specific name does not limit the protection scope of the present application, for example, without loss of generality, the wake up link can also be described as a first link. Hereinafter, it is uniformly described as a wake up link.

[0104] The signal received by the terminal device using the wake up circuit can be called as a wake up signal (WUS) or a low power wake up signal (LP-WUS). It can be understood that the wake up signal is only named for distinction, and its specific name does not limit the protection scope of the present application, for example, without loss of generality, the wake up signal can also be called as a signal. Hereinafter, it is uniformly described as a wake up signal.

[0105] 2、main circuit: or called main receiver (MR) or main module, which can be understood as a circuit used by the terminal device when transmitting data normally, or a circuit used by the terminal device when transmitting data in a connected state. When the terminal device transmits data through the main circuit, the power consumption is large. It can be understood that the main circuit is only named for distinction, and its specific name does not limit the protection scope of the present application, for example, without loss of generality, the main circuit can also be described as a second circuit (or a second module). Hereinafter, it is uniformly described as a main circuit.

[0106] The signal received by the terminal device through the main circuit can be called as transmission on a main link, wherein the main link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity. It can be understood that the main link is only named for distinction, and its specific name does not limit the protection scope of the present application, for example, without loss of generality, the main link can also be described as a second link. Hereinafter, it is uniformly described as a main link.

[0107] Hereinafter, for the sake of distinction, the signal transmitted by the terminal device using the main circuit is referred to as a data signal.

[0108] Referring to Figure 2 , as an example, Figure 2 is a schematic diagram of the main circuit and the wake-up circuit.

[0109] As shown in Figure 2 , the terminal device can receive (or detect, or monitor) the wake-up signal through the wake-up circuit, and the terminal device can receive the data signal through the main circuit. Assuming that the terminal device receives the wake-up signal through the wake-up circuit. If the terminal device does not detect the wake-up signal, it continues to receive the wake-up signal through the wake-up circuit, and the main circuit can be in a closed state (or sleep state); if the terminal device detects the wake-up signal, it triggers the wake-up of the main circuit, i.e. makes / switches the main circuit to an open state (or working state, or active state). After the main circuit is turned on, the terminal device can transmit the data signal through the main circuit.

[0110] 3. On off key (OOK) modulation: using the presence or absence of signal transmission to modulate information, and the corresponding wake-up circuit can use envelope detection method to receive the signal. OOK modulation technology can realize demodulation with a receiver with very low complexity, so it can achieve the low power consumption goal of the wake-up circuit. In order to ensure the power consumption benefit, the wake-up signal can use OOK modulation. It can be understood that the wake-up signal can also use other modulation methods, which are not limited.

[0111] When the signal uses OOK modulation, each bit (i.e. coded bit) can correspond to a symbol. Equivalently, a symbol can also be referred to as a chip, or other names, which are not limited here.

[0112] For example, when the bit is "1", there is signal emission within the symbol length (i.e. the signal transmission power within the symbol length is not 0); when the bit is "0", there is no signal emission within the symbol length (i.e. the signal transmission power within the symbol length is 0). Or it can also be understood that in OOK modulation, if energy is sent, it represents "1", and if no energy is sent, it represents "0".

[0113] For another example, when the bit is "0", there is signal emission within the symbol length (i.e. the signal transmission power within the symbol length is not 0); when the bit is "1", there is no signal emission within the symbol length (i.e. the signal transmission power within the symbol length is 0). Or it can also be understood that in OOK modulation, if energy is sent, it represents "0", and if no energy is sent, it represents "1".

[0114] Hereinafter, for the convenience of description, it is exemplarily illustrated that when the bit is "1", there is signal emission in the length of the symbol; and when the bit is "0", there is no signal emission in the length of the symbol.

[0115] In addition, for the convenience of description, if there is signal emission in a symbol, the symbol is recorded as an ON symbol; and if there is no signal emission in a symbol, the symbol is recorded as an OFF symbol. Taking the example that when the bit is "1", there is signal emission in the length of the symbol; and when the bit is "0", there is no signal emission in the length of the symbol, the ON symbol indicates that the information bit is "1", and the OFF symbol indicates that the information bit is "0". The ON symbol can also be referred to as an ON signal, and the OFF symbol can also be referred to as an OFF signal. For the sake of unity, hereinafter, both the ON symbol and the OFF symbol are described.

[0116] In addition, for the convenience of description, if there is signal emission in a symbol, the symbol is recorded as an ON symbol; and if there is no signal emission in a symbol, the symbol is recorded as an OFF symbol. Taking the example that when the bit is "1", there is signal emission in the length of the symbol; and when the bit is "0", there is no signal emission in the length of the symbol, the ON symbol indicates that the information bit is "1", and the OFF symbol indicates that the information bit is "0". The ON symbol can also be referred to as an ON signal, and the OFF symbol can also be referred to as an OFF signal. For the sake of unity, hereinafter, both the ON symbol and the OFF symbol are described.

[0117] In addition, the OOK symbol mentioned hereinafter indicates a symbol obtained by OOK modulation. The OOK symbol can be an ON symbol, or can also be an OFF symbol. For example, if the information bit is "1", the OOK symbol obtained by OOK modulation is an ON symbol, and if the information bit is "0", the OOK symbol obtained by OOK modulation is an OFF symbol. The OOK symbol can also be referred to as an OOK signal. For the sake of unity, hereinafter, both the OOK symbol and the OOK signal are described.

[0118] Referring to Figure 3 , as an example, Figure 3 is a waveform diagram when the signal is modulated by OOK.

[0119] As an example, it is assumed that when the bit is "1", there is a signal during the OOK symbol length; when the bit is "0", there is no signal during the OOK symbol length, so Figure 3 the waveform shown can represent "0100" four bits, that is, the first is an OFF symbol, the second is an ON symbol, and the third and fourth are OFF symbols. As Figure 3 shown, a communication system generally transmits using a certain frequency (frequency). The transmitted signal needs to be modulated on a carrier. At the receiving end, the receiving end detects the envelope (or energy) of the received signal to determine whether the OOK symbol corresponds to bit "0" or bit "1", thereby completing demodulation.

[0120] After the signal passes through the channel, distortion may occur due to the influence of the channel state. Therefore, in order to determine whether the signal corresponds to bit "0" or bit "1", the receiving end can compare the received signal level value with a threshold. For example, if the received signal level value received by the receiving end is greater than the threshold, it indicates that the signal corresponds to bit "1"; if the received signal level value received by the receiving end is less than the threshold, it indicates that the signal corresponds to bit "0". However, it is difficult to set the threshold. For example, if the threshold is not selected properly, it may cause demodulation errors. In order to solve this problem, one possible way is to use Manchester coding.

[0121] Manchester coding is a kind of bi-phase coding, which can represent bit "0" or bit "1" through the high-low conversion of the level. For example, through Manchester coding, the original bit "0" can be coded as bit "10", and the original bit "1" can be coded as bit "01". For the sake of distinction, the coded bits, such as bit "10" and "01", can be called coded bits. When sending a signal, the sending end can send 1 bit of original information using 2 OOK symbols. If the original bit "0" is coded as bit "10", and the original bit "1" is coded as bit "01", then the original bit "0" corresponds to one ON symbol followed by one OFF symbol, and the original bit "1" corresponds to one OFF symbol followed by one ON symbol. When demodulating the Manchester coded signal, the receiving end can compare the relative size of the signal power (or signal amplitude) in the adjacent two OOK symbols. If the signal power (or signal amplitude) in the former OOK symbol is greater than the signal power (or signal amplitude) in the latter OOK symbol, it is considered that the received information bit is "0", and vice versa. In this way, the absolute threshold can be avoided to make a decision.

[0122] It can be understood that the above example of coding the original bit "0" as bit "10" and coding the original bit "1" as bit "01" is illustrative and is not limited thereto. For example, the original bit "0" can be coded as bit "01", and the original bit "1" can be coded as bit "10".

[0123] 4. The way of the wake-up information carried by the wake-up signal: At present, the wake-up information carried by the wake-up signal includes the following two forms: 1) bitmap form; 2) code point form. The following briefly introduces the two forms.

[0124] 1) bitmap

[0125] Specifically, the bitmap included in the wake-up signal can wake up at least one terminal device or at least one terminal device group. In this way, one wake-up signal can be used for multiple terminal devices or multiple terminal device groups. Each terminal device can correspond to one or more bits in the bitmap carried by the wake-up signal. For example, one wake-up signal is used for four terminal devices, and a bitmap with a length of four bits is carried in the wake-up signal. It is assumed that a bit value of "1" indicates being woken up, and a bit value of "0" indicates not being woken up. If the bitmap in the wake-up signal is 1001, it indicates that the first terminal device and the fourth terminal device are woken up to monitor the physical downlink control channel (PDCCH), and the second terminal device and the third terminal device are not woken up (that is, continue to monitor the wake-up signal); or, if the bitmap in the wake-up signal is 1001, it indicates that the first terminal device group and the fourth terminal device group are woken up to monitor the PDCCH, and the second terminal device group and the third terminal device group are not woken up (that is, continue to monitor the wake-up signal).

[0126] 2) codepoint

[0127] Specifically, the codepoint (or codepoint value (value), or identification (identify, ID)) included in the wake-up signal can wake up one terminal device or one terminal device group. In this way, one wake-up signal can be used for one terminal device or one terminal device group, and one terminal device or one terminal device group corresponds to the codepoint carried in one wake-up signal. For example, assuming that there are 16 terminal devices or 16 terminal device groups, a codepoint of 4 bits can be used to indicate that a certain terminal device or terminal device group is woken up.

[0128] 5, FR1 and FR2: One possible implementation, the spectrum resource can be divided into the following two frequency ranges (frequency range, FR) (or frequency spectrum range): FR1 and FR2.

[0129] FR1: Low frequency band. As an example, the frequency range corresponding to FR1 can be 450MHz-6000MHz.

[0130] FR2: millimeter wave high frequency band, rich in spectrum resources. As an example, the frequency range corresponding to FR2 can be 24250MHz-52600MHz.

[0131] It can be understood that the naming of FR1 and FR2 should not constitute any limitation to the present application. The present application does not exclude the possibility that other names are defined in future protocols to represent the same or similar meanings. For differentiation, FR1 and FR2 are used to represent respectively in the following embodiments.

[0132] It can also be understood that the above-mentioned listed frequency ranges corresponding to FR1 and FR2 are only examples, and the present application is not limited thereto.

[0133] 6. Carrier aggregation (CA): In order to improve the utilization of frequency spectrum, the system supports aggregation between different carrier units (component carriers, CCs) (or: member carriers, constituent carriers, carriers, etc.). The technology of aggregating 2 or more carriers together to support a larger transmission bandwidth can be referred to as carrier aggregation.

[0134] Different terminal devices can be configured with different CCs, and each CC can correspond to an independent cell. In the embodiments of the present application, as one possible implementation, one CC can be equivalent to one cell. For example, a primary cell (PCell) corresponds to a primary CC (or: primary carrier), which can be a cell for which the terminal device performs initial connection establishment, or a cell for which the terminal device performs radio resource control (RRC) connection reestablishment, or a cell specified in the handover process. A secondary cell (SCell) corresponds to a secondary CC (or: secondary carrier), which can be added in RRC reconfiguration and used to provide additional radio resources.

[0135] For a terminal device in a connected state, if no carrier aggregation is configured, the terminal device has one serving cell; if carrier aggregation is configured, the terminal device can have multiple serving cells, which can be referred to as a serving cell set. For example, the primary cell and the secondary cell described above form the serving cell set of the terminal device. In other words, the serving cell set includes at least one primary cell and at least one secondary cell. Alternatively, the terminal device configured with carrier aggregation can be connected to one PCell and one or more SCells.

[0136] It is considered that when the terminal device is configured with CA in the connected state, the terminal device can also monitor the wake-up signal. In this case, the working mode of the wake-up signal can be approximately as follows:

[0137] One is that the wake-up signal is only used to trigger the terminal device to monitor PDCCH on one cell. For example, the terminal device is configured with cell #1, cell #2 and cell #3, and the wake-up signal only triggers the terminal device to monitor PDCCH on the PCell (for example, cell #1). In this way, one wake-up signal is only used to trigger the terminal device to monitor PDCCH on one cell, and the flexibility is low.

[0138] Another is that the wake-up signal is used to trigger the terminal device to monitor PDCCH on multiple cells, and the relationship between the multiple cells and the wake-up signal is pre-configured. For example, the terminal device is configured with cell #1, cell #2 and cell #3, and the network device pre-configures cell #1 and cell #2 to be associated with the wake-up signal, so that the wake-up signal can trigger the terminal device to monitor PDCCH on cell #1 and cell #2. This way needs to pre-configure the relationship between the cell and the wake-up signal, which belongs to a semi-static configuration mode, and the flexibility is also not high enough. And based on this way, even if the arrived service has only a little data (for example, the data amount is small, and only cell #1 can transmit and complete quickly), the network device may still wake up the terminal to monitor PDCCH on all the cells (for example, cell #1 and cell #2) configured and associated with the wake-up signal, which will waste power consumption.

[0139] Therefore, the present application provides a solution. The network device can determine N pieces of information, which correspond to different CCs (or different CC groups, or different cells, or different cell groups, or different frequency ranges, etc.), respectively. If the information corresponding to a certain CC (or CC group, or cell, or cell group, or frequency range, etc.) is carried in the wake-up signal, it means that the terminal device monitors the PDCCH on the CC (or CC group, or cell, or cell group, or frequency range, etc.). In this way, the PDCCH monitoring on different CCs (or CC groups, or different cells, or different cell groups, or different frequency ranges, etc.) can be controlled by the wake-up signal, which not only realizes the combination of the wake-up signal and CA, but also controls the PDCCH monitoring on different cell groups by the wake-up signal, which is flexible and can reduce power consumption. In addition, compared with using a multi-bit bitmap to indicate which CCs of the plurality of CCs to monitor the PDCCH, the problem of bit waste and large resource overhead can be solved, and the signaling overhead can be reduced. Specifically, assuming that there are X CCs (X is an integer greater than 1), at least X bits of bitmap are required to indicate which CC or which CCs of the X CCs to monitor the PDCCH. If the PDCCH is monitored on only a small part of the X CCs (such as X1 CCs), then for the CCs that do not need to monitor the PDCCH, the corresponding bits still need to be carried in the wake-up signal, which results in at least (X-X1) idle bits. That is, regardless of whether the PDCCH is monitored on the CC, X bits corresponding to the X CCs need to be sent, which results in large resource overhead.

[0140] The method provided by the embodiments of the present application will be described in detail below with reference to the drawings. The embodiments provided by the present application can be applied to the scenario shown in the above figure, without limitation. In addition, the terms involved below can refer to the previous explanation, which will not be repeated hereinafter. In addition, the following is described by taking a terminal device and a network device as examples for illustrative purposes. The terminal device can be replaced by a terminal device or a component (such as a chip or a chip system or a circuit or a communication module) of the terminal device, and the network device can be replaced by a component (such as a chip or a chip system or a circuit or a communication module) of the network device. In addition, the steps described below can also be divided into being executed by multiple execution subjects, which can be logically and / or physically separated.

[0141] Referring to Figure 4 , as an example, Figure 4 is a schematic diagram of a communication method 400 provided by an embodiment of the present application. Figure 4 The method 400 shown can include the following steps.

[0142] S410, the network device sends a wake-up signal. Correspondingly, the terminal device receives the wake-up signal.

[0143] The wake-up signal comprises a first identifier, and the first identifier indicates that PDCCH is monitored in the first group of cells. The first identifier indicating that PDCCH is monitored in the first group of cells can also be replaced by any one of the following descriptions: the first identifier indicates the first group of cells; or the first identifier indicates that the cells for monitoring PDCCH are the first group of cells.

[0144] The first group of cells comprises at least one cell, and the first group of cells is one of N groups of cells, where N is an integer greater than 1.

[0145] Each group of cells in the N groups of cells comprises at least one cell, and the number of cells included in different groups of cells can be the same or different, which is not limited.

[0146] For example, assuming that there are 5 cells, which are referred to as cell #1, cell #2, cell #3, cell #4, and cell #5, the 5 cells can be divided into two groups of cells, one of which comprises cell #1, cell #2, and cell #3, and the other of which comprises cell #4 and cell #5; or the 5 cells can be divided into three groups of cells, one of which comprises cell #1, cell #2, and cell #3, another of which comprises cell #4 and cell #5, and the other of which comprises all the cells, i.e., cell #1, cell #2, cell #3, cell #4, and cell #5.

[0147] As an example, when one group of cells comprises one cell, the group of cells can also be referred to as one cell.

[0148] As an example, there can be overlap between the cells included in different groups of cells.

[0149] For example, one of the N groups of cells can comprise at least two other groups of cells, i.e., one of the N groups of cells can be the union of at least two other groups of cells. For example, taking the above 5 cells as an example, one group of cells (referred to as cell group #1) comprises cell #1, cell #2, and cell #3, another group of cells (referred to as cell group #2) comprises cell #4 and cell #5, and a group of cells (referred to as cell group #3) comprises the cells in cell group #1 and cell group #2, i.e., cell group #3 comprises all the cells.

[0150] For another example, one of the N groups of cells can comprise part or all of the cells in at least one other group of cells. For example, taking the above 5 cells as an example, one group of cells comprises cell #1, cell #2, and cell #3, and another group of cells comprises cell #1, cell #4, and cell #5.

[0151] The first identifier is one of the N identifiers, and the N identifiers have a corresponding relationship (or an associated relationship) with the N groups of cells, that is, the N identifiers correspond to the N groups of cells one by one, in other words, one identifier can identify one group of cells. Specifically, different identifiers of the N identifiers indicate monitoring PDCCH in a corresponding group of cells, in other words, different identifiers of the N identifiers indicate monitoring PDCCH in different groups of cells of the N groups of cells. Based on this, the network device can control the PDCCH monitoring of the terminal device in different cells.

[0152] For example, assuming that N=3, the N identifiers are respectively called identifier #1, identifier #2, and identifier #3, and the N groups of cells are respectively called cell group #1, cell group #2, and cell group #3. It is assumed that identifier #1 has a corresponding relationship with cell group #1, identifier #2 has a corresponding relationship with cell group #2, and identifier #3 has a corresponding relationship with cell group #3. Then, if the terminal device receives a wake-up signal including identifier #1, or in other words, the terminal device receives a wake-up signal containing identifier #1, the terminal device monitors PDCCH in cell group #1; if the terminal device receives a wake-up signal including identifier #2, or in other words, the terminal device receives a wake-up signal containing identifier #2, the terminal device monitors PDCCH in cell group #2; and if the terminal device receives a wake-up signal including identifier #3, or in other words, the terminal device receives a wake-up signal containing identifier #3, the terminal device monitors PDCCH in cell group #3.

[0153] For example, the N identifiers are N IDs. For another example, the N identifiers are N values (value), such as N codepoint values.

[0154] The specific form of the N identifiers is not limited, for example, in addition to ID and value, it can also be other forms, such as a string, text, letters, etc. As long as the identifier can distinguish different groups of cells, it is applicable to the embodiments of the present application.

[0155] S420, the terminal device monitors PDCCH in the first group of cells according to the first identifier. In addition, the network device can send PDCCH in the first group of cells. In other words, the wake-up signal sent by the network device carries the first identifier, and correspondingly, the network device sends PDCCH in the first group of cells.

[0156] Specifically, the terminal device receives the wake-up signal containing the first identifier, and since the first identifier corresponds to the first group of cells, the terminal device monitors PDCCH in the first group of cells, instead of monitoring PDCCH in the remaining groups of cells of the N groups of cells. As mentioned above, different groups of cells can overlap, and it can be understood that the "monitoring PDCCH in the remaining groups of cells of the N groups of cells" is relative to the groups. Specifically, if the first group of cells includes part or all of the cells in the other groups of cells, the terminal device monitors PDCCH in the first group of cells, including monitoring PDCCH in the part or all of the cells, in other words, the terminal device monitors PDCCH in the first group of cells, which does not exclude the terminal device monitoring PDCCH in the cells in the first group of cells that overlap with the other groups of cells. The following two examples are used for illustration.

[0157] For example, assume that the cell group #1 includes cell #1 and cell #2, the cell group #2 includes cell #3 and cell #4, and the cell group #3 includes all the cells, i.e., cell #1, cell #2, cell #3, and cell #4, in other words, the cell group #3 includes all the cells in the cell group #1 and the cell group #2. In this case, if the first group of cells is the cell group #3, the terminal device monitors PDCCH in the first group of cells, instead of monitoring PDCCH in the remaining groups of cells of the N groups of cells, which means that for the cell group #1, the cell group #2, and the cell group #3, the terminal device only monitors PDCCH in all the cells in the cell group #3, i.e., the terminal device monitors PDCCH in cell #1, cell #2, cell #3, and cell #4. At this time, the terminal device does not monitor PDCCH in the cell group #1 and the cell group #2, which can be understood as the terminal device does not monitor PDCCH in the unit of the cell group #1 and the cell group #2, but does not exclude the terminal device actually monitoring PDCCH in the cells included in the cell group #1 (i.e., cell #1 and cell #2) and the cells included in the cell group #2 (i.e., cell #3 and cell #4).

[0158] For example, assume that the cell group #1 includes cell #1 and cell #2, the cell group #2 includes cell #1 and cell #3. In this case, if the first group of cells is the cell group #2, the terminal device monitors PDCCH in the first group of cells, instead of monitoring PDCCH in the remaining groups of cells of the N groups of cells, which means that for the cell group #1 and the cell group #2, the terminal device only monitors PDCCH in all the cells in the cell group #2, i.e., the terminal device monitors PDCCH in cell #1 and cell #3. At this time, the terminal device does not monitor PDCCH in the cell group #1, which can be understood as the terminal device does not monitor PDCCH in the unit of the cell group #1, but does not exclude the terminal device actually monitoring PDCCH in the cells included in the cell group #1 (e.g., cell #1).

[0159] The division manner of the N groups of cells is not limited.

[0160] One possible implementation is to group the cells according to whether the cells are FR1 cells or FR2 cells. Based on this, the first group of cells can include any of the following: all cells configured for the terminal device and located in FR1, all cells configured for the terminal device and located in FR2, and all cells configured for the terminal device and located in FR1 and FR2 (or all cells configured for the terminal device).

[0161] For example, N = 2, and one group of cells is all cells configured for the terminal device and located in FR1, and the other group of cells is all cells configured for the terminal device and located in FR2; or one group of cells is all cells configured for the terminal device and located in FR1, and the other group of cells is all cells configured for the terminal device and located in FR1 and FR2.

[0162] For another example, N = 3, and one group of cells is all cells configured for the terminal device and located in FR1, another group of cells is all cells configured for the terminal device and located in FR2, and the other group of cells is all cells configured for the terminal device and located in FR1 and FR2.

[0163] Another possible implementation is that the network device divides all cells configured for the terminal device into N groups of cells. Based on this, the first group of cells is one group of cells in the N groups of cells configured by the network device.

[0164] Specifically, considering that the wake-up signal indicates in which cell or cells to monitor the PDCCH, therefore, the network device can group all cells configured for the terminal device, and then determine in which group of cells the terminal device monitors the PDCCH by carrying the identifier (such as ID or value) corresponding to the group of cells in the wake-up signal. For example, there are M cells (M is an integer greater than 1) configured for the terminal device, and the network device can divide part or all of the M cells into N groups of cells. The wake-up signal carries the identifier (such as ID or value) corresponding to the group of cells, and the terminal device monitors the PDCCH in which group of cells.

[0165] Alternatively, M = N, and the M cells are N groups of cells. In this case, the N groups of cells are N cells (that is, M cells). The wake-up signal carries the identifier corresponding to the cell, and the terminal device monitors the PDCCH in the cell.

[0166] Alternatively, N = M + 1, and M groups of cells in the N groups of cells each include 1 cell, and the remaining one group of cells includes M cells. Assuming M = 2, i.e., cell #1 and cell #2, the N groups of cells (i.e., 3 groups of cells) are: cell #1, cell #2, and cell #1 and cell #2. If the wake-up signal carries the identifier corresponding to cell #1, the terminal device monitors the PDCCH in cell #1; if the wake-up signal carries the identifier corresponding to cell #2, the terminal device monitors the PDCCH in cell #2; and if the wake-up signal carries the identifier corresponding to the group of cells in which cell #1 and cell #2 are located, the terminal device monitors the PDCCH in cell #1 and cell #2.

[0167] Optionally, the method 400 further includes: the terminal device receives first configuration information, the first configuration information including information of M cells configured for the terminal device. For example, the terminal device is configured with CA, and the network device can send configuration information (i.e., the first configuration information) to the terminal device, which indicates the relevant information of the CA, such as the information of the CC (i.e., the M cells) configured for the terminal device.

[0168] Optionally, after the terminal device monitors the PDCCH in the first group of cells, the method 400 further includes: the terminal device receives control information, the control information indicating to monitor the PDCCH in a second group of cells; and according to the control information, the terminal device monitors the PDCCH in the second group of cells.

[0169] The second group of cells includes at least one cell, and the second group of cells is a group of cells different from the first group of cells in the N groups of cells.

[0170] The control information indicates to monitor the PDCCH in the second group of cells, or alternatively, the control information triggers the terminal device to monitor the PDCCH in the second group of cells. In other words, after receiving the control information, the terminal device starts to monitor the PDCCH in the second group of cells.

[0171] The control information is signaling received by the terminal device through a main circuit. As an example, the control information is any one of the following: medium access control (MAC) signaling (e.g., MAC control element (MAC CE / MAC-CE)), downlink control information (DCI), radio resource control (RRC) signaling, etc.

[0172] Optionally, the terminal device determines the correspondence between the N identifiers and the N groups of cells. Based on this, the terminal device determines the correspondence between the N identifiers and the N groups of cells, and then, after receiving the wake-up signal, determines the cell (or cell group) in which to monitor the PDCCH based on the identifier carried in the wake-up signal, thereby implementing PDCCH monitoring of the terminal device in different cells.

[0173] In a possible implementation, the terminal device receives second configuration information indicating the correspondence between the N identifiers and the N groups of cells. For example, the grouping of cells and the identifiers corresponding to each group of cells are configured, so that the network device can indicate the correspondence between the N identifiers and the N groups of cells to the terminal device.

[0174] In another possible implementation, the correspondence between the N identifiers and the N groups of cells is predefined.

[0175] For example, the grouping of cells is predefined, and the identifiers corresponding to each group of cells are configured. For example, a plurality of cells can be grouped into N groups of cells according to the frequency location of cell deployment. For example, the cells in FR1 are a group of cells, and the cells in FR2 are another group of cells; for another example, the cells in FR1 are a group of cells, and the cells in FR1 and FR2 are another group of cells; for another example, the cells in FR1 are a group of cells, the cells in FR2 are another group of cells, and the cells in FR1 and FR2 are yet another group of cells.

[0176] The above is an example for illustration, and the embodiments of the present application are not limited thereto. For example, the grouping of cells and the identifiers corresponding to each group of cells are predefined. For another example, the grouping of cells is configured, and the identifiers corresponding to each group of cells are predefined.

[0177] In the following, N identifiers are N IDs, and several examples are introduced in combination with two cases.

[0178] In the following examples, "monitoring PDCCH in FR1" and "monitoring PDCCH on each cell in FR1" are sometimes used interchangeably, which represent the same meaning, that is, monitoring PDCCH on each cell belonging to FR1 configured by the network device. Similarly, "monitoring PDCCH in FR2" and "monitoring PDCCH on each cell in FR2" are sometimes used interchangeably, which represent the same meaning, that is, monitoring PDCCH on each cell belonging to FR2 configured by the network device.

[0179] Case one, the N IDs correspond one-to-one to N groups of frequency ranges.

[0180] In the following, FR1 and FR2 are taken as examples, and several examples are introduced.

[0181] As an example, the correspondence between the ID and the frequency range can be in the form of a table, a function, a text, or a string, such as stored or transmitted. For ease of illustration, the following examples are illustrated in the form of a table.

[0182] Example 1, two IDs correspond to FR1 and FR2 respectively.

[0183] In example 1, the correspondence between the ID and the frequency range is shown in Table 1.

[0184] Table 1

[0185] ID Frequency Range ID#1 FR1 ID#2 FR2

[0186] The following describes the implementation of example 1 in combination with (A) in Table 1. Figure 5

[0187] Referring to Figure 5 , as an example, Figure 5 is a schematic diagram of the relationship between the ID and the frequency range or cell group applicable to the embodiments of the present application.

[0188] For example, if the terminal device receives a wake-up signal containing ID #1, the terminal device starts monitoring PDCCH in FR1, that is, the terminal device starts monitoring PDCCH on each cell in FR1. As shown in (A) in Figure 5 When the terminal device receives a wake-up signal containing ID #1, the terminal device selects to monitor PDCCH in FR1 instead of monitoring PDCCH in FR2, as shown in (A) in

[0189] Further optionally, after the terminal device starts monitoring PDCCH on each cell in FR1 (i.e. an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start monitoring PDCCH on each cell in FR2 (i.e. an example of the second group of cells) through other signaling (for distinction, referred to as signaling #A, i.e. an example of control information) sent to the terminal device.

[0190] Wherein, the signaling #A is the signaling received by the terminal device through the main circuit. As an example, the signaling #A is MAC signaling (for example, MAC CE, DCI, RRC signaling, etc.

[0191] ​In a possible implementation, if the terminal device is configured with an SCell dormancy function, the network device can trigger the terminal device to start monitoring PDCCH on each cell in FR2 through signaling corresponding to the SCell dormancy function (i.e., an example of signaling #A). As an example, the signaling corresponding to the SCell dormancy function includes any of the following: DCI format 2_6, DCI format 1_1, DCI format 1_0, DCI format 2_1, or DCI format 2_0.

[0192] For another example, if the terminal device receives a wake-up signal containing ID #2, the terminal device starts to monitor PDCCH in FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR2. As shown in (A) of Figure 5 When the terminal device receives a wake-up signal containing ID #2, the terminal device selects to monitor PDCCH on each cell in FR2 instead of monitoring PDCCH in FR1.

[0193] Further optionally, after the terminal device starts to monitor PDCCH on each cell (i.e., an example of the first group of cells) in FR2, the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on each cell (i.e., an example of the second group of cells) in FR1 through other signaling (for distinction, referred to as signaling #B, which is an example of control information) sent to the terminal device. The signaling #B is signaling received by the terminal device through the main circuit. As an example, the signaling #B is MAC signaling (for example, MAC CE), DCI, RRC signaling, or the like.

[0194] Example 2: Two IDs correspond to FR1, FR1&FR2 respectively.

[0195] In example 2, the correspondence between the ID and the frequency range is shown in Table 2.

[0196] Table 2

[0197] ID Frequency Range ID#1 FR1 ID#2 FR1 & FR2

[0198] The implementation of example 2 will be described in detail below in combination with (A) of Figure 6 and Table 2.

[0199] Referring to Figure 6 , as an example, Figure 6 is another schematic diagram of the relationship between the ID and the frequency range or the cell group applicable to the embodiments of the present application.

[0200] For example, if the terminal device receives the wake-up signal containing ID#1, the terminal device starts to monitor PDCCH in FR1, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1. As shown in (A) of FIG. 1, when the terminal device receives the wake-up signal containing ID#1, the terminal device selects to monitor PDCCH in FR1 instead of monitoring PDCCH in FR2. Figure 6

[0201] Further optionally, after the terminal device starts to monitor PDCCH on each cell (i.e., an example of the first group of cells) in FR1, the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on each cell (i.e., an example of the second group of cells) in FR2 through other signaling (i.e., signaling #A, which is an example of control information) sent to the terminal device. For details, reference can be made to the related description in Example 1, which will not be repeated here.

[0202] For example, if the terminal device receives the wake-up signal containing ID#2, the terminal device starts to monitor PDCCH in FR1 and FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1 and on each cell in FR2. As shown in (A) of FIG. 2, when the terminal device receives the wake-up signal containing ID#2, the terminal device starts to monitor PDCCH on each cell in FR1 and on each cell in FR2. One possible scenario is that when the amount of arrived service data is small, the network device can carry ID#1 in the wake-up signal, i.e., the terminal device can only monitor PDCCH on each cell in FR1; when the amount of arrived service data is large, the network device can carry ID#2 in the wake-up signal, i.e., the terminal device can monitor PDCCH on each cell in FR1 and on each cell in FR2. Figure 6

[0203] Example 3: 3 IDs correspond to FR1, FR2, and FR1&FR2 respectively.

[0204] In Example 3, the correspondence between the ID and the frequency range is shown in Table 3.

[0205] Table 3

[0206] ID Frequency Range ID#1 FR1 ID#2 FR2 ID#3 FR1 & FR2

[0207] The implementation of Example 2 will be described below in combination with (A) of FIG. 1 and Table 2. Figure 7

[0208] Referring to FIG. 1, as an example, Figure 7 is another schematic diagram of the relationship between the ID and the frequency range or the cell group applicable to the embodiments of the present application. Figure 7

[0209] ​​​​For example, if the terminal device receives the wake-up signal containing ID#1, the terminal device starts to monitor PDCCH in FR1, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1. As shown in (A) of FIG. 1, when the terminal device receives the wake-up signal containing ID#1, the terminal device selects to monitor PDCCH in FR1 instead of monitoring PDCCH in FR2. Figure 7

[0210] Further optionally, after the terminal device starts to monitor PDCCH on each cell (i.e. an example of the first group of cells) in FR1, the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on each cell (i.e. an example of the second group of cells) in FR2 through other signaling (i.e. signaling #A, which is an example of control information) sent to the terminal device. For this, reference can be made to the related description in Example 1, which will not be repeated here.

[0211] For example, if the terminal device receives the wake-up signal containing ID#2, the terminal device starts to monitor PDCCH in FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR2. As shown in (A) of FIG. 2, when the terminal device receives the wake-up signal containing ID#2, the terminal device selects to monitor PDCCH in FR2 instead of monitoring PDCCH in FR1. Figure 7

[0212] Further optionally, after the terminal device starts to monitor PDCCH on each cell (i.e. an example of the first group of cells) in FR2, the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on each cell (i.e. an example of the second group of cells) in FR1 through other signaling (i.e. signaling #B, which is an example of control information) sent to the terminal device. For this, reference can be made to the related description in Example 1, which will not be repeated here.

[0213] For example, if the terminal device receives the wake-up signal containing ID#3, the terminal device starts to monitor PDCCH in FR1 and FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1 and each cell in FR2. As shown in (A) of FIG. 3, when the terminal device receives the wake-up signal containing ID#3, the terminal device starts to monitor PDCCH on each cell in FR1 and each cell in FR2. Figure 7

[0214] The above introduces the scenario of N IDs corresponding to N groups of frequency ranges in combination with Example 1-Example 3, and the following introduces the scenario of N IDs corresponding to N groups of cells in combination with Example 4-Example 6.

[0215] Case two, N IDs correspond to N groups of cells one by one.​​​

[0216] Each of the N cell groups includes at least one cell. There may be overlap between different cell groups in the N cell groups (for example, cell group #1 and cell group #2 may include the same cells; or a cell group may be the union of the other two cell groups), or there may be no overlap between different cell groups in the N cell groups, which is not a limitation.

[0217] As an example, the mapping between IDs and cell groups can exist in the form of tables, functions, text, or strings, such as being stored or transmitted. For clarity, the following example uses a table.

[0218] As examples, the division method of cell group #1 and cell group #2 in Examples 4-6 below is not limited. For example, they can be divided by frequency range, such as cell group #1 consisting of cells within FR1 and cell group #2 consisting of cells within FR2. Another example is division by network coverage area of ​​the cells. Yet another example is division by cell type, such as cell group #1 being PCell and cell group #2 being SCell.

[0219] Example 4: The two IDs correspond to cell group #1 and cell group #2, respectively.

[0220] In Example 1, the correspondence between ID and cell group is shown in Table 4.

[0221] Table 4

[0222] ID Cell Group ID#1 Cell Group#1 ID#2 Cell Group#2

[0223] The following is combined Figure 5 The implementation of Example 4 will be explained in detail in section (B) and Table 4. Assume that cell group #1 includes PCell.

[0224] For example, if a terminal device receives a wake-up signal containing ID#1, the terminal device begins monitoring the PDCCH on cell group #1, or in other words, the terminal device begins monitoring the PDCCH on each cell of cell group #1. Figure 5 As shown in (B), when the terminal device receives a wake-up signal containing ID#1, the terminal device chooses to monitor the PDCCH on cell group #1 instead of cell group #2.

[0225] Alternatively, after the terminal device begins monitoring the PDCCH on each cell of cell group #1 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also begin monitoring the PDCCH on cell group #2 (i.e., an example of the second group of cells) by sending other signaling (i.e., signaling #A, which is also an example of control information) to the terminal device. Refer to the relevant description in Example 1 for further details.

[0226] For example, if the terminal device receives the wake-up signal containing ID#2, the terminal device starts to monitor PDCCH on cell group #2, or in other words, the terminal device starts to monitor PDCCH on each cell of cell group #2. As shown in (B) of FIG. 1, when the terminal device receives the wake-up signal containing ID#2, the terminal device selects to monitor PDCCH on cell group #2 instead of monitoring PDCCH on cell group #1. Figure 5

[0227] Further optionally, after the terminal device starts to monitor PDCCH on each cell of cell group #2 (an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on cell group #1 (an example of the second group of cells) through other signaling (signaling #B, an example of control information) sent to the terminal device. For details, reference can be made to the related description in Example 1, which will not be repeated here.

[0228] Example 5: Two IDs correspond to cell group #1, cell group #1 & cell group #2 respectively.

[0229] In Example 5, the correspondence between the ID and the cell group is shown in Table 5.

[0230] Table 5

[0231] ID Cell Group ID#1 Cell Group#1 ID#2 Cell Group#1 & Cell Group#2

[0232] The implementation of Example 5 will be described below in combination with (B) of FIG. 1 and Table 5. It is assumed that cell group #1 includes the PCell. Figure 6 For example, if the terminal device receives the wake-up signal containing ID#1, the terminal device starts to monitor PDCCH on cell group #1, or in other words, the terminal device starts to monitor PDCCH on each cell of cell group #1. As shown in (B) of FIG. 1, when the terminal device receives the wake-up signal containing ID#1, the terminal device selects to monitor PDCCH on cell group #1 instead of monitoring PDCCH on cell group #2.

[0233] Figure 6

[0234] Further optionally, after the terminal device starts to monitor PDCCH on each cell of cell group #1 (an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on cell group #2 (an example of the second group of cells) through other signaling (signaling #A, an example of control information) sent to the terminal device. For details, reference can be made to the related description in Example 1, which will not be repeated here.

[0235] ​​​For another example, if the terminal device receives a wake-up signal containing ID#2, then the terminal device begins monitoring the PDCCH on cell group #1 and cell group #2, or in other words, the terminal device begins monitoring the PDCCH on each cell of cell group #1 and each cell of cell group #2. Figure 6 As shown in (B), when the terminal device receives a wake-up signal containing ID#2, the terminal device begins to monitor the PDCCH on each cell of cell group #1 and each cell of cell group #2.

[0236] Example 6: The three IDs correspond to cell group #1, cell group #2, and cell group #1 & cell group #2, respectively.

[0237] In Example 6, the correspondence between ID and cell group is shown in Table 6.

[0238] Table 6

[0239] ID Cell Group ID#1 Cell Group#1 ID#2 Cell Group#2 ID#3 Cell Group#1 & Cell Group#2

[0240] The following is combined Figure 7 The implementation of Example 6 will be explained in detail in section (B) and Table 6. Assume that cell group #1 includes PCell.

[0241] For example, if a terminal device receives a wake-up signal containing ID#1, the terminal device begins monitoring the PDCCH on cell group #1, or in other words, the terminal device begins monitoring the PDCCH on each cell of cell group #1. Figure 7 As shown in (B), when the terminal device receives a wake-up signal containing ID#1, the terminal device chooses to monitor the PDCCH on cell group #1 instead of cell group #2.

[0242] Alternatively, after the terminal device begins monitoring the PDCCH on each cell of cell group #1 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also begin monitoring the PDCCH on cell group #2 (i.e., an example of the second group of cells) by sending other signaling (i.e., signaling #A, which is also an example of control information) to the terminal device. Refer to the relevant description in Example 1 for further details.

[0243] For another example, if the terminal device receives a wake-up signal containing ID#2, then the terminal device begins monitoring the PDCCH on cell group #2, or in other words, the terminal device begins monitoring the PDCCH on each cell of cell group #2. Figure 7 As shown in (B), when the terminal device receives a wake-up signal containing ID#2, the terminal device selects to monitor the PDCCH on cell group #2 instead of monitoring the PDCCH on cell group #1.

[0244] Further optionally, after the terminal device starts to monitor PDCCH on each cell in the cell group #2 (i.e. an example of the first group of cells), the network device can indicate (or trigger) the terminal device to also start to monitor PDCCH on the cell group #1 (i.e. an example of the second group of cells) through other signaling (i.e. an example of signaling #B, i.e. an example of control information) sent to the terminal device. For this, reference can be made to the related description in Example 1, which will not be repeated here.

[0245] For another example, if the terminal device receives the wake-up signal containing ID #3, the terminal device starts to monitor PDCCH on the cell group #1 and the cell group #2, or in other words, the terminal device starts to monitor PDCCH on each cell in the cell group #1 and each cell in the cell group #2. As shown in (B) of FIG. 7, when the terminal device receives the wake-up signal containing ID #3, the terminal device starts to monitor PDCCH on each cell in the cell group #1 and each cell in the cell group #2. Figure 7

[0246] The above Examples 1 to 6 are illustrative examples, and embodiments of the present application are not limited thereto. For example, more numbers of IDs and corresponding frequency ranges can be included in the above Examples 1-3. For another example, more numbers of IDs and corresponding cell groups can be included in the above Examples 4-6. For another example, FR1 in the above Examples 1-3 can be replaced by a first frequency range, and FR2 can be replaced by a second frequency range. For another example, the cell groups in the above Examples 4-6 can be replaced by cells.

[0247] The above describes that the terminal device determines to monitor PDCCH on the cell (or cell group, or cell in the frequency range) corresponding to the ID carried in the wake-up signal. The following describes that the terminal device determines to monitor PDCCH on which cell (or cell group, or cell in the frequency range) based on the time domain position where the wake-up signal is monitored. Figures 4-7 Figures 8-11 The following describes that the terminal device determines to monitor PDCCH on which cell (or cell group, or cell in the frequency range) based on the time domain position where the wake-up signal is monitored.

[0248] Referring to FIG. 8, as an example, Figure 8 Figure 8 is a schematic diagram of a communication method 800 provided by an embodiment of the present application. Figure 8 The method 800 shown can include the following steps.

[0249] S810, the network device sends a wake-up signal in a first time domain resource. Correspondingly, the terminal device receives the wake-up signal in the first time domain resource.

[0250] ​​​The terminal device receives the wake-up signal in the first time domain resource, which can be understood as monitoring the wake-up signal in the first time domain resource, which can be continuous monitoring of the wake-up signal, or can be discontinuous monitoring of the wake-up signal, such as the terminal device monitoring the wake-up signal in part of the time domain resources in the first time domain resource, and not monitoring the wake-up signal in the remaining time domain resources. This is not limited.

[0251] The first time domain resource is one of the N groups of time domain resources, and the wake-up signals received by different groups of time domain resources of the N groups of time domain resources indicate monitoring PDCCH in different groups of cells of the N groups of cells, and N is an integer greater than 1. In addition, for the network device, the network device can send the wake-up signal on part of the time domain resources of a group of time domain resources (such as the first time domain resource); for the terminal device, the terminal device can monitor the wake-up signal on part of the time domain resources of a group of time domain resources (such as the first time domain resource).

[0252] The N groups of time domain resources have a corresponding relationship (or an associated relationship) with the N groups of cells, specifically, different groups of time domain resources of the N groups of time domain resources are used to carry the wake-up signal indicating monitoring PDCCH in different groups of cells of the N groups of cells; in other words, the wake-up signals received by different time domain resources of the N groups of time domain resources indicate monitoring PDCCH in a corresponding group of cells; in other words, the wake-up signals received by different time domain resources of the N groups of time domain resources indicate monitoring PDCCH in different groups of cells of the N groups of cells. Based on this, the network device can control the terminal device to monitor PDCCH in different cells.

[0253] For example, assuming N=3, the N groups of time domain resources are respectively called: time domain resource #1, time domain resource #2, time domain resource #3, and the N groups of cells are respectively called: cell group #1, cell group #2, and cell group #3. And assume that time domain resource #1 has a corresponding relationship with cell group #1, time domain resource #2 has a corresponding relationship with cell group #2, and time domain resource #3 has a corresponding relationship with cell group #3. Then, if the terminal device receives the wake-up signal on the time domain resource in the time domain resource #1, the terminal device monitors PDCCH in the cell group #1; if the terminal device receives the wake-up signal on the time domain resource in the time domain resource #2, the terminal device monitors PDCCH in the cell group #2; if the terminal device receives the wake-up signal on the time domain resource in the time domain resource #3, the terminal device monitors PDCCH in the cell group #3.

[0254] For the related scheme of the N groups of cells, refer to the related description in the foregoing method 400, which will not be repeated here.

[0255] Each group of time domain resources in the N groups of time domain resources can have a unit such as MO, for example, the first time domain resource includes K MOs, and K is an integer greater than 1 or equal to 1.

[0256] Optionally, each group of time-frequency resources can be periodically present. Each time the group of time-frequency resources periodically present, K MOs are included.

[0257] S820, the terminal device monitors PDCCH in the first group of cells based on receiving the wake-up signal in the first time-domain resource. In addition, the network device transmits PDCCH in the first group of cells. In other words, the network device transmits the wake-up signal in the first time-domain resource, wherein the first time-domain resource is used to carry the wake-up signal indicating monitoring PDCCH in the first group of cells, and accordingly, the network device transmits PDCCH in the first group of cells.

[0258] Specifically, the terminal device receives the wake-up signal on the first time-domain resource, and if the terminal device receives the wake-up signal in the first time-domain resource, the terminal device monitors PDCCH in the first group of cells corresponding to the first time-domain resource, instead of monitoring PDCCH in the remaining groups of cells of the N groups of cells. Different groups of cells can overlap. It can be understood that "not monitoring PDCCH in the remaining groups of cells of the N groups of cells" is relative to the group. Specifically, if the first group of cells includes part or all of the cells in the other groups of cells, the terminal device monitors PDCCH in the first group of cells, including monitoring PDCCH in the part or all of the cells, in other words, the terminal device monitors PDCCH in the first group of cells, which does not exclude the terminal device monitoring PDCCH in the cells in the first group of cells that overlap with other groups of cells. For this, reference can be made to the related description in the foregoing method 400, which will not be described here.

[0259] Optionally, the wake-up signal includes first information of the N information, the first information indicating that one terminal device or one group of terminal devices monitors PDCCH, and different information of the N information indicating that different terminal devices or different groups of terminal devices monitor PDCCH. Specifically, one wake-up signal is used to wake up one terminal device or one group of terminal devices. The N information can be, for example, N codepoint values, and the first information is one codepoint value of the N codepoint values.

[0260] Optionally, the method 800 further includes: the terminal device receives first configuration information, the first configuration information including information of M cells configured for the terminal device. For example, the terminal device is configured with CA, and the network device can send configuration information (i.e., first configuration information) to the terminal device, which indicates the relevant information of the CA, such as the information of the CC (i.e., M cells) configured for the terminal device.

[0261] Optionally, after the terminal device monitors the PDCCH in the first group of cells, the method 800 further includes: the terminal device receiving control information, the control information indicating to monitor the PDCCH in the second group of cells; and monitoring the PDCCH in the second group of cells according to the control information. For details, reference can be made to the related description in the method 400, which is not described here.

[0262] Optionally, the terminal device determines the correspondence between the N groups of time domain resources and the N groups of cells. Based on this, the terminal device determines the correspondence between the N groups of time domain resources and the N groups of cells, and then after receiving the wake-up signal, determines in which cell (or cell group) to monitor the PDCCH based on the time domain resource where the wake-up signal is located, so as to realize the PDCCH monitoring of the terminal device in different cells.

[0263] In a possible implementation, the terminal device receives second configuration information, the second configuration information indicating the correspondence between the N groups of time domain resources and the N groups of cells. For example, the grouping of cells and the N groups of time domain resources are configured, and therefore the network device can indicate to the terminal device the correspondence between the N groups of time domain resources and the N groups of cells.

[0264] In another possible implementation, the correspondence between the N groups of time domain resources and the N groups of cells is predefined.

[0265] For example, the grouping of cells is predefined, and the N groups of time domain resources are configured. For example, a plurality of cells can be grouped into N groups of cells according to the frequency location where the cells are deployed. For example, the cells in FR1 are grouped into one group of cells, and the cells in FR2 are grouped into another group of cells; for another example, the cells in FR1 are grouped into one group of cells, and the cells in FR1 and FR2 are grouped into another group of cells; for another example, the cells in FR1 are grouped into one group of cells, the cells in FR2 are grouped into another group of cells, and the cells in FR1 and FR2 are grouped into yet another group of cells.

[0266] The above is an example for illustration, and the embodiments of the present application are not limited thereto. For example, the grouping of cells and the N groups of time domain resources are predefined. For another example, the grouping of cells is configured, and the N groups of time domain resources are predefined.

[0267] In the following, several examples are introduced in connection with two cases.

[0268] In the following examples, “monitoring the PDCCH in FR1” and “monitoring the PDCCH in each cell in FR1” are sometimes used interchangeably, which represent the same meaning, that is, monitoring the PDCCH in each cell belonging to FR1 configured by the network device. Similarly, “monitoring the PDCCH in FR2” and “monitoring the PDCCH in each cell in FR2” are sometimes used interchangeably, which represent the same meaning, that is, monitoring the PDCCH in each cell belonging to FR2 configured by the network device.

[0269] Case 1, N groups of time domain resources correspond to N groups of frequency ranges one by one.

[0270] The following takes FR1 and FR2 as examples to introduce several examples.

[0271] As an example, the correspondence between the time domain resources and the frequency ranges can exist in the form of a table, a function, a text, or a string, such as storage or transmission. For ease of illustration, the following examples take a table as an example for illustration.

[0272] Example 7, 2 groups of time domain resources correspond to FR1 and FR2 respectively.

[0273] In example 7, the correspondence between the time domain resources and the frequency ranges is shown in Table 7.

[0274] Table 7

[0275] Time Domain Resource Frequency Range Time Domain Resource#1 FR1 Time Domain Resource#2 FR2

[0276] The following describes the implementation of example 7 in combination with (A) in and Table 7. Figure 9

[0277] Referring to FIG. 1, Figure 9 As an example, Figure 9 is a schematic diagram of the relationship between the time domain resources and the frequency ranges or cell groups applicable to the embodiments of the present application.

[0278] For example, if the terminal device monitors the wake-up signal on time domain resource #1, when the terminal device monitors the wake-up signal, the terminal device starts to monitor PDCCH in FR1, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1. As shown in (A) in Figure 9 As shown in (A) in, when the terminal device monitors the wake-up signal on time domain resource #1, the terminal device selects to monitor PDCCH in FR1, rather than in FR2.

[0279] Further optionally, after the terminal device starts to monitor PDCCH on each cell in FR1 (an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on each cell in FR2 (an example of the second group of cells) through other signaling (i.e., signaling #A, an example of control information) sent to the terminal device. For this, please refer to the related description in example 1 in method 400, which will not be described here.

[0280] For another example, if the terminal device monitors the wake-up signal on time domain resource #2, when the terminal device monitors the wake-up signal, the terminal device starts to monitor PDCCH in FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR2. As shown in​Figure 9 As shown in (A), when the terminal device detects a wake-up signal on time domain resource #2, the terminal device chooses to monitor the PDCCH in FR2 instead of in FR1.

[0281] Optionally, after the terminal device begins monitoring the PDCCH in each cell within FR2 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also begin monitoring the PDCCH in each cell within FR1 (i.e., an example of the second group of cells) through other signaling sent to the terminal device (i.e., signaling #B, which is also an example of control information). Here, signaling #B is the signaling received by the terminal device through the main circuit. Refer to the relevant description in Example 1 of Method 400 for details, which will not be repeated here.

[0282] Example 8: The two sets of time-domain resources correspond to FR1 and FR1 & FR2, respectively.

[0283] In Example 8, the correspondence between time-domain resources and frequency ranges is shown in Table 8.

[0284] Table 8

[0285] Time Domain Resource Frequency Range Time Domain Resource#1 FR1 Time Domain Resource#2 FR1 & FR2

[0286] The following is combined Figure 10 The implementation of Example 8 will be explained in detail in (A) and Table 8.

[0287] See Figure 10 As an example, Figure 10 This is another schematic diagram illustrating the relationship between time-domain resources and frequency range or cell group applicable to embodiments of this application.

[0288] For example, if the terminal device monitors for a wake-up signal on time domain resource #1, then upon detecting the wake-up signal, the terminal device begins monitoring the PDCCH within FR1, or in other words, the terminal device begins monitoring the PDCCH on each cell of FR1. Figure 10 As shown in (A), when the terminal device detects a wake-up signal on time domain resource #1, the terminal device chooses to monitor the PDCCH in FR1 instead of in FR2.

[0289] Alternatively, after the terminal device begins monitoring the PDCCH in each cell within FR1 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also begin monitoring the PDCCH in each cell within FR2 (i.e., an example of the second group of cells) by sending other signaling to the terminal device (i.e., signaling #A, which is also an example of control information). Refer to the relevant description in Example 1 of Method 400 for further details; it will not be repeated here.

[0290] For example, if the terminal device monitors the wake-up signal on time domain resource #2, the terminal device starts to monitor PDCCH in FR1 and FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1 and each cell in FR2, when the terminal device monitors the wake-up signal. Figure 10 As shown in (A) of FIG. 9, when the terminal device monitors the wake-up signal on time domain resource #2, the terminal device starts to monitor PDCCH on each cell in FR1 and each cell in FR2. A possible case is that when the amount of arrived service data is small, the terminal device can only monitor PDCCH on each cell in FR1; when the amount of arrived service data is large, the terminal device can monitor PDCCH on each cell in FR1 and FR2.

[0291] Example 9: 3 groups of time domain resources correspond to FR1, FR2 and FR1&FR2 respectively.

[0292] In example 9, the correspondence between time domain resources and frequency ranges is shown in Table 9.

[0293] Table 9

[0294] Time Domain Resource Frequency Range Time Domain Resource#1 FR1 Time Domain Resource#2 FR2 Time Domain Resource#3 FR1 & FR2

[0295] The implementation of example 9 is described below in combination with (A) of FIG. 9 and Table 9. Figure 11

[0296] Referring to FIG. 8, as an example, Figure 11 Figure 11 is another schematic diagram of the relationship between time domain resources and frequency ranges or cell groups applicable to the embodiments of the present application.

[0297] For example, if the terminal device monitors the wake-up signal on time domain resource #1, the terminal device starts to monitor PDCCH in FR1, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1, when the terminal device monitors the wake-up signal. Figure 11 As shown in (A) of FIG. 8, when the terminal device monitors the wake-up signal on time domain resource #1, the terminal device selects to monitor PDCCH in FR1 instead of in FR2.

[0298] Further optionally, after the terminal device starts to monitor PDCCH on each cell in FR1 (i.e. an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start to monitor PDCCH on each cell in FR2 (i.e. an example of the second group of cells) through other signaling (i.e. an example of signaling #A, i.e. control information) sent to the terminal device. For this, please refer to the related description in example 1 in method 400, which is not described here. ​​

[0299] For example, if the terminal device monitors the wake-up signal on time domain resource #2, upon monitoring the wake-up signal, the terminal device starts to monitor PDCCH in FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR2. As shown in (A) of FIG. 7, upon monitoring the wake-up signal on time domain resource #2, the terminal device selects to monitor PDCCH in FR2 instead of monitoring PDCCH in FR1. Figure 11

[0300] Further optionally, after the terminal device starts to monitor PDCCH on each cell in FR2 (i.e., an example of the first group of cells), the network device can indicate (or trigger) the terminal device to also start to monitor PDCCH on each cell in FR1 (i.e., an example of the second group of cells) through other signaling (i.e., signaling #B, which is an example of control information) sent to the terminal device. For this, reference can be made to the related description in example 1 in method 400, which will not be elaborated here.

[0301] For example, if the terminal device monitors the wake-up signal on time domain resource #3, upon monitoring the wake-up signal, the terminal device starts to monitor PDCCH in FR1 and FR2, or in other words, the terminal device starts to monitor PDCCH on each cell in FR1 and each cell in FR2. As shown in (A) of FIG. 8, upon monitoring the wake-up signal on time domain resource #3, the terminal device starts to monitor PDCCH on each cell in FR1 and each cell in FR2. Figure 11

[0302] The above describes scenarios in which N groups of time domain resources correspond to N groups of frequency ranges in examples 7-9. The following describes scenarios in which N groups of time domain resources correspond to N groups of cells in examples 10-12.

[0303] Case two, N groups of time domain resources correspond to N groups of cells one by one.

[0304] Each group of cells in the N groups of cells includes at least one cell. There can be overlap between different groups of cells in the N groups of cells (e.g., cell group #1 and cell group #2 include the same cells; for another example, a certain group of cells is the union of at least two other groups of cells), or there can be no overlap between different groups of cells in the N groups of cells, which is not limited.

[0305] As an example, the correspondence between time domain resources and groups of cells can exist in the form of a table, a function, text, or a string, such as storage or transmission. For ease of illustration, the following examples are described by way of example using a table.

[0306] ​​As an example, the division manners of the cell group #1 and the cell group #2 in the following examples 10-12 are not limited. For example, the division is performed in frequency ranges, such as the cell group #1 is a cell in FR1 and the cell group #2 is a cell in FR2. For another example, the division is performed in network coverage ranges of the cells. For another example, the division is performed in types of the cells, such as the cell group #1 is a PCell and the cell group #2 is an SCell.

[0307] Example 10, 2 groups of time domain resources correspond to the cell group #1 and the cell group #2 respectively.

[0308] In example 10, the correspondence between the time domain resources and the cell groups is shown in table 10.

[0309] Table 10

[0310] Time Domain Resource Cell Group Time Domain Resource#1 Cell Group#1 Time Domain Resource#2 Cell Group#2

[0311] The implementation of example 10 is specifically explained below in combination with (B) in example 10 and table 10. It is assumed that the cell group #1 includes a PCell. Figure 9 For example, if the terminal device monitors the wake-up signal on the time domain resource #1, the terminal device starts to monitor the PDCCH on the cell group #1, or in other words, the terminal device starts to monitor the PDCCH on each cell of the cell group #1, when the wake-up signal is monitored.

[0312] As shown in (B) in example 10, when the terminal device monitors the wake-up signal on the time domain resource #1, the terminal device selects to monitor the PDCCH on the cell group #1 instead of the cell group #2. Figure 9 Further optionally, after the terminal device starts to monitor the PDCCH on each cell of the cell group #1 (an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start to monitor the PDCCH on the cell group #2 (an example of the second group of cells) through other signaling (namely, signaling #A, an example of control information) sent to the terminal device. For this, reference can be made to the related description in example 1 in method 400, which is not repeated here.

[0313] For another example, if the terminal device monitors the wake-up signal on the time domain resource #2, the terminal device starts to monitor the PDCCH on the cell group #2, or in other words, the terminal device starts to monitor the PDCCH on each cell of the cell group #2, when the wake-up signal is monitored.

[0314] As shown in (B) in example 10, when the terminal device monitors the wake-up signal on the time domain resource #2, the terminal device selects to monitor the PDCCH on the cell group #2 instead of the cell group #1. Figure 9

[0315] ​Alternatively, after the terminal device begins monitoring the PDCCH on each cell of cell group #2 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also begin monitoring the PDCCH on cell group #1 (i.e., an example of the second group of cells) by sending other signaling (i.e., signaling #B, which is also an example of control information) to the terminal device. Refer to the relevant description in Example 1 of Method 400 for details, which will not be repeated here.

[0316] Example 11: The two sets of time-domain resources correspond to cell group #1 and cell group #1 & cell group #2, respectively.

[0317] In Example 11, the correspondence between time-domain resources and cell groups is shown in Table 11.

[0318] Table 11

[0319] Time Domain Resource Cell Group Time Domain Resource#1 Cell Group#1 Time Domain Resource#2 Cell Group#1 & Cell Group#2

[0320] The following is combined Figure 10 The implementation of Example 11 will be explained in detail in section (B) and Table 11. Assume that cell group #1 includes PCell.

[0321] For example, if a terminal device monitors for a wake-up signal on time domain resource #1, then upon detecting the wake-up signal, the terminal device begins monitoring the PDCCH on cell group #1, or in other words, the terminal device begins monitoring the PDCCH on each cell of cell group #1. Figure 10 As shown in (B), when the terminal device detects a wake-up signal on time domain resource #1, the terminal device chooses to monitor the PDCCH on cell group #1 instead of monitoring the PDCCH on cell group #2.

[0322] Alternatively, after the terminal device begins monitoring the PDCCH on each cell of cell group #1 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also begin monitoring the PDCCH on cell group #2 (i.e., an example of the second group of cells) by sending other signaling (i.e., signaling #A, which is also an example of control information) to the terminal device. Refer to the relevant description in Example 1 of Method 400 for details, which will not be repeated here.

[0323] For another example, if the terminal device monitors for a wake-up signal on time domain resource #2, then upon detecting the wake-up signal, the terminal device begins monitoring the PDCCH on cell group #1 and cell group #2, or in other words, the terminal device begins monitoring the PDCCH on each cell of cell group #1 and each cell of cell group #2. Figure 10As shown in (B) of Table 11, when the terminal device monitors the wake-up signal on the time-domain resource #2, the terminal device starts to monitor the PDCCH on each cell of the cell group #1 and each cell of the cell group #2.

[0324] In Example 12, the three groups of time-domain resources correspond to the cell group #1, the cell group #2 and the cell group #1 & the cell group #2 respectively.

[0325] In Example 12, the correspondence between the time-domain resources and the cell groups is shown in Table 12.

[0326] Table 12

[0327]

[0328]

[0329] The implementation of Example 12 will be described in detail below in combination with (B) of Table 11 and Table 12. It is assumed that the cell group #1 includes the PCell. Figure 11 For example, if the terminal device monitors the wake-up signal on the time-domain resource #1, when the terminal device monitors the wake-up signal, the terminal device starts to monitor the PDCCH on the cell group #1, or in other words, the terminal device starts to monitor the PDCCH on each cell of the cell group #1. As shown in (B) of Table 11, when the terminal device monitors the wake-up signal on the time-domain resource #1, the terminal device selects to monitor the PDCCH on the cell group #1 instead of the cell group #2.

[0330] Figure 11

[0331] Further optionally, after the terminal device starts to monitor the PDCCH on each cell of the cell group #1 (i.e. an example of the first group of cells), the network device can instruct (or trigger) the terminal device to also start to monitor the PDCCH on the cell group #2 (i.e. an example of the second group of cells) through other signaling (i.e. signaling #A, which is an example of control information) sent to the terminal device. For this, reference can be made to the related description in Example 1 in the method 400, which will not be described here.

[0332] For another example, if the terminal device monitors the wake-up signal on the time-domain resource #2, when the terminal device monitors the wake-up signal, the terminal device starts to monitor the PDCCH on the cell group #2, or in other words, the terminal device starts to monitor the PDCCH on each cell of the cell group #2. As shown in (B) of Table 11, when the terminal device monitors the wake-up signal on the time-domain resource #2, the terminal device selects to monitor the PDCCH on the cell group #2 instead of the cell group #1. Figure 11

[0333] ​​​Further optionally, after the terminal device starts to monitor PDCCH on each cell in the cell group #2 (i.e., an example of the first group of cells), the network device can instruct (or trigger) the terminal device to start to monitor PDCCH on the cell group #1 (i.e., an example of the second group of cells) through other signaling (i.e., signaling #B, which is an example of control information) sent to the terminal device. For this, reference can be made to the related description in example 1 in the method 400, which will not be repeated here.

[0334] For another example, if the terminal device monitors the wake-up signal on the time domain resource #3, when the terminal device monitors the wake-up signal, the terminal device starts to monitor PDCCH on the cell group #1 and the cell group #2, or in other words, the terminal device starts to monitor PDCCH on each cell in the cell group #1 and each cell in the cell group #2. As shown in (B) in FIG. 13, when the terminal device monitors the wake-up signal on the time domain resource #3, the terminal device starts to monitor PDCCH on each cell in the cell group #1 and each cell in the cell group #2. Figure 11

[0335] It can be understood that the above examples 7 to 12 are for example illustration, and the embodiments of the present application are not limited thereto. For example, more time domain resources and corresponding cell groups can be included in the above examples 10 to 12. For another example, the cell groups in the above examples 10 to 12 can be replaced by cells. For another example, more time domain resources and corresponding frequency ranges can be included in the above examples 7 to 9.

[0336] It can be understood that in the embodiments of the present application, “monitoring” can be used alternatively with “receiving”, “detecting” or “reading”. For example, “receiving the wake-up signal” can be replaced by “monitoring the wake-up signal”, “detecting the wake-up signal” or “reading the wake-up signal”.

[0337] It can also be understood that in some embodiments of the present application, FR1 and FR2 are taken as examples for example illustration, and the embodiments of the present application are not limited thereto. For example, FR1 can be replaced by a first frequency range, and FR2 can be replaced by a second frequency range.

[0338] It can also be understood that in the embodiments of the present application, if the terminal device knows that it is woken up, such as based on the wake-up signal, the terminal device can immediately access the network device, or the terminal device can also access the network device after a period of time, which is not limited.

[0339] ​It should also be understood that, in some embodiments described above, the main circuit and the wake-up circuit are mainly exemplarily described, and the application is not limited thereto. For example, the "wake-up circuit" can be replaced by "first module", or can be replaced by "wake-up link", or can be replaced by "in the first state", or can be replaced by "in the first mode". For example, "the terminal device receives the signal using the wake-up circuit" can be replaced by "the terminal device receives the signal through the first module or the terminal device receives the signal on the wake-up link". The "main circuit" can be replaced by "second module", or can be replaced by "main link", or can be replaced by "in the second state", or can be replaced by "in the second mode". For example, "the terminal device receives the signal using the main circuit" can be replaced by "the terminal device receives the signal through the second module or the terminal device receives the signal on the main link".

[0340] It should also be understood that, in the embodiments of the application, the interaction between the terminal device and the network device is mainly exemplarily described, and the application is not limited thereto. The terminal device can be replaced by a receiving end device, and the receiving end device can be a terminal device or a network device. The network device can be replaced by a sending end device, and the sending end device can be a terminal device or a network device. For example, the "terminal device" can be replaced by a "first terminal device", and the "network device" can be replaced by a "second terminal device".

[0341] The above, in combination with Figure 11 The method provided by the embodiments of the application is described in detail. In the following, in combination with Figures 4-11 The device provided by the embodiments of the application is described in detail. It should be understood that the description of the device embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the method embodiments described above, and for brevity, will not be described here.

[0342] Referring to Figures 12-14 , as an example, Figure 12 is a schematic diagram of a communication device 1200 provided by an embodiment of the application. The communication device 1200 includes a transceiver unit 1210. The transceiver unit 1210 can be used to implement the corresponding communication function. The transceiver unit 1210 can also be referred to as a communication interface or a communication unit. Optionally, the communication device 1200 further includes a processing unit 1220. The processing unit 1220 can be used for processing, such as determining which cell group to monitor PDCCH.

[0343] Optionally, the device 1200 can also include a storage unit, which can be used to store instructions and / or data. The processing unit 1220 can read the instructions and / or data in the storage unit, so that the device implements the foregoing method embodiments.

[0344] In a first possible design of the apparatus 1200, the apparatus 1200 can be a terminal device in the foregoing embodiments, and the apparatus 1200 can implement the steps or procedures performed by the terminal device in the foregoing method embodiments. In this case, the transceiver unit 1210 can be configured to perform the operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of the terminal device in the foregoing method embodiments, and the processing unit 1220 can be configured to perform the operations related to processing (or operations other than transceiving, e.g., operations other than transmitting and / or receiving data or messages) of the terminal device in the foregoing method embodiments.

[0345] In a possible implementation, the transceiver unit 1210 can be configured to receive a wake-up signal, the wake-up signal comprising a first identifier, the first identifier indicating to monitor a physical downlink control channel (PDCCH) in a first group of cells, the first group of cells comprising at least one cell, the first group of cells being one of N groups of cells, the first identifier being one of N identifiers, different identifiers of the N identifiers indicating to monitor the PDCCH in different groups of cells of the N groups of cells, N being an integer greater than 1; and the transceiver unit 1210 can be further configured to monitor the PDCCH in the first group of cells according to the first identifier.

[0346] Optionally, the transceiver unit 1210 can be further configured to receive first configuration information, the first configuration information comprising information of M cells configured for the terminal device, the cells included in the N groups of cells belonging to the M cells, M being an integer greater than 1.

[0347] Optionally, the first group of cells is any one of the following: all cells configured for the terminal device within a frequency range 1 (FR1); all cells configured for the terminal device within a frequency range 2 (FR2); all cells configured for the terminal device; and a group of cells configured for the terminal device.

[0348] Optionally, the transceiver unit 1210 can be further configured to receive control information, the control information indicating to monitor the PDCCH in a second group of cells; and the transceiver unit 1210 can be further configured to monitor the PDCCH in the second group of cells according to the control information.

[0349] Optionally, the transceiver unit 1210 can be further configured to receive second configuration information, the second configuration information indicating a correspondence between the N identifiers and the N groups of cells.

[0350] In another possible implementation, the transceiver 1210 is configured to receive the wake-up signal in the first time domain resource; and the transceiver 1210 is further configured to monitor a physical downlink control channel (PDCCH) in the first group of cells based on the receiving the wake-up signal in the first time domain resource; wherein the first group of cells includes at least one cell, the first group of cells is one of N groups of cells, the first time domain resource is one of N groups of time domain resources, different groups of time domain resources of the N groups of time domain resources are used to carry the wake-up signal indicating to monitor the PDCCH in different groups of cells of the N groups of cells, and N is an integer greater than 1.

[0351] Optionally, the transceiver 1210 is further configured to receive first configuration information, the first configuration information including information of M cells configured for the terminal device, and the cells included in the N groups of cells belong to the M cells, and M is an integer greater than 1.

[0352] Optionally, the first group of cells is any one of the following: all cells configured for the terminal device within a frequency range 1 (FR1); all cells configured for the terminal device within a frequency range 2 (FR2); all cells configured for the terminal device; and a group of cells configured for the terminal device.

[0353] Optionally, the transceiver 1210 is further configured to receive control information, the control information indicating to monitor the PDCCH in the second group of cells; and the PDCCH is monitored in the second group of cells according to the control information.

[0354] Optionally, the transceiver 1210 is further configured to receive second configuration information, the second configuration information indicating a correspondence between the N groups of time domain resources and the N groups of cells.

[0355] Optionally, the wake-up signal includes first information of N information, the first information indicating one terminal device or one group of terminal devices to monitor the PDCCH, and different information of the N information indicates different terminal devices or different groups of terminal devices to monitor the PDCCH.

[0356] In a second possible design, the apparatus 1200 can be the network device in the foregoing embodiments, and the apparatus 1200 can implement steps or procedures corresponding to those performed by the network device in the foregoing method embodiments. The transceiver 1210 can be configured to perform operations related to the transmission and / or reception of the network device (e.g., operations of transmitting and / or receiving data or messages), and the processing unit 1220 can be configured to perform operations related to the processing of the network device or operations other than the transmission and / or reception (e.g., operations other than transmitting and / or receiving data or messages).

[0357] In a possible implementation, the transceiver 1210 is configured to send the wake-up signal, the wake-up signal comprising a first identifier, the first identifier indicating to monitor a physical downlink control channel (PDCCH) within a first group of cells, the first group of cells comprising at least one cell, the first group of cells being one of N groups of cells, the first identifier being one of N identifiers, different identifiers of the N identifiers indicating to monitor the PDCCH within different groups of cells of the N groups of cells, N being an integer greater than 1. Optionally, the transceiver 1210 is further configured to send the PDCCH within the first group of cells.

[0358] In another possible implementation, the transceiver 1210 is configured to send the wake-up signal on a time domain resource within a first time domain resource, the first time domain resource being one of N groups of time domain resources, different groups of time domain resources of the N groups of time domain resources being used to carry a wake-up signal indicating to monitor a PDCCH within different groups of cells of the N groups of cells, N being an integer greater than 1. Optionally, the transceiver 1210 is further configured to send the PDCCH within the first group of cells.

[0359] It should be understood that the specific process by which each unit performs the corresponding steps described above has been described in detail in the method embodiments described above, and thus will not be described again here for brevity.

[0360] It should also be understood that the apparatus 1200 herein is embodied in the form of functional units. The term "unit" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combination of logical circuit and / or other suitable components supporting the described functions. In an optional example, those skilled in the art can understand that the apparatus 1200 can be embodied as the communication apparatus in the above embodiments, and can be used to perform the processes and / or steps corresponding to the communication apparatus in each of the method embodiments described above. To avoid repetition, these will not be described again here.

[0361] The apparatus 1200 of each of the above solutions has the function of implementing the corresponding steps performed by the communication apparatus (for example, a terminal device, and for example, a network device) in the above methods. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver can be replaced by a transceiver (for example, the transmitting unit in the transceiver can be replaced by a transmitter, and the receiving unit in the transceiver can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, which respectively performs the transceiving operations and related processing operations in each of the method embodiments.

[0362] In addition, the transceiver unit 1210 can also be a transceiver circuit (for example, can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit.

[0363] It should be noted that, Figure 12 The apparatus in the above embodiments can be a communication device (such as a terminal device, or a network device), or a chip or a chip system (for example, a system on chip (SoC)). The transceiver unit can be an input / output circuit or a communication interface, and the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. In this regard, no limitation is made.

[0364] Referring to Figure 12 , as an example, Figure 13 is a schematic diagram of another communication apparatus 1300 provided by the embodiments of the present application. The apparatus 1300 includes a processor 1310 and a memory 1320 coupled to the processor 1310, the memory 1320 being configured to store computer programs or instructions and / or data, and the processor 1310 being configured to execute the computer programs or instructions stored in the memory 1320, or read the data stored in the memory 1320, to perform the methods in the above method embodiments.

[0365] Optionally, the processor 1310 is one or more.

[0366] Optionally, the memory 1320 is one or more.

[0367] Optionally, the memory 1320 is integrated with the processor 1310, or is separately arranged.

[0368] Optionally, as Figure 13 indicated, the apparatus 1300 further includes a transceiver 1330 configured to receive and / or send signals. For example, the processor 1310 is configured to control the transceiver 1330 to receive and / or send signals.

[0369] As an example, the processor 1310 can have the functions of the processing unit 1220 as indicated in Figure 13 , the memory 1320 can have the function of a storage unit, and the transceiver 1330 can have the functions of the transceiver unit 1210 as indicated in Figure 12 .

[0370] As an example, the apparatus 1300 is configured to implement the operations performed by a communication device (such as a terminal device, or a network device) in the above method embodiments.

[0371] For example, the processor 1310 is configured to execute the computer programs or instructions stored in the memory 1320 to implement the related operations of the communication device in the above method embodiments.

[0372] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0373] It should also be understood that the memory mentioned in the embodiments of the present application can be a volatile memory and / or a non-volatile memory. The non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as an external cache. As an example but not limitation, the RAM includes the following various forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0374] It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, the memory (storage module) can be integrated in the processor.

[0375] It is also noted that the memories described herein are intended to include, but not be limited to, these and any other suitable types of memory.

[0376] Referring now to the drawings Figure 12 , as an example, Figure 14 is a schematic diagram of a chip system 1400. The chip system 1400 (or also can be referred to as a processing system) includes a logic circuit 1410 and an input / output interface 1420.

[0377] The logic circuit 1410 can be a processing circuit in the chip system 1400. The logic circuit 1410 can be coupled to a storage unit, invoke instructions in the storage unit, so that the chip system 1400 can implement the methods and functions of the embodiments of the present application. The input / output interface 1420 can be an input / output circuit in the chip system 1400, output the information processed by the chip system 1400, or input the data or signaling information to be processed by the chip system 1400 for processing.

[0378] As a solution, the chip system 1400 is configured to implement the operations performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above various method embodiments.

[0379] For example, the logic circuit 1410 is configured to implement the processing-related operations performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above method embodiments; and the input / output interface 1420 is configured to implement the sending and / or receiving-related operations performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above method embodiments.

[0380] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program or instructions for implementing the method performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above various method embodiments. For example, the computer program or instructions, when running on the communication apparatus, cause the communication apparatus (such as a terminal device, and also such as a network device) to perform the above method (such as the method 400 or the method 800).

[0381] The embodiments of the present application also provide a computer program product, which contains instructions executed by a computer to implement the method performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above various method embodiments. For example, when the computer program or instructions run on the communication apparatus, the communication apparatus (such as a terminal device, and also such as a network device) performs the above method (such as the method 400 or the method 800).

[0382] The embodiments of the present application further provide a communication system, which comprises the terminal device and / or the network device in the above embodiments. For example, the system comprises Figure 14 the terminal device and the network device in the embodiments. For another example, the system comprises Figure 4 Figure 8 the terminal device and the network device in the embodiments.

[0383] The explanations and beneficial effects of the related contents in any of the above provided devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0384] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other means. For example, the above-described device embodiments are only illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0385] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. For example, the computer can be a personal computer, a server, a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc. For example, the foregoing available media includes but is not limited to: a variety of media that can store program codes such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0386] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that, include: Receive a wake-up signal, the wake-up signal including a first identifier, the first identifier indicating monitoring of the physical downlink control channel PDCCH in a first group of cells, the first group of cells including at least one cell, the first group of cells being a group of cells in N groups of cells, the first identifier being an identifier among N identifiers, the different identifiers among the N identifiers indicating monitoring of PDCCH in different groups of cells in the N groups of cells, where N is an integer greater than 1; Based on the first identifier, PDCCH is monitored within the first group of cells.

2. The method according to claim 1, characterized in that, Before receiving the wake-up signal, the method further includes: Receive first configuration information, which includes information on M cells configured for the terminal device, wherein the N groups of cells include cells belonging to the M cells, and M is an integer greater than 1.

3. The method according to claim 1 or 2, characterized in that, The first group of cells is any one of the following: All cells located within the frequency range 1FR1 are configured for the terminal equipment; All cells located within the frequency range 2FR2 are configured for the terminal equipment; All cells configured for the terminal device; A set of cells configured for terminal devices.

4. The method according to any one of claims 1 to 3, characterized in that, The N groups of cells further include a second group of cells, the second group of cells including at least one cell, and after monitoring the PDCCH in the first group of cells, the method further includes: Receive control information, the control information indicating that PDCCH should be monitored within the second group of cells; Based on the control information, the PDCCH is monitored within the second group of cells.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: Receive second configuration information, which indicates the correspondence between the N identifiers and the N groups of cells.

6. The method according to any one of claims 1 to 5, characterized in that, The method is applied to a terminal device, which is in a connected state.

7. A communication method, characterized in that, include: Receive the wake-up signal in the first time domain resource; Based on receiving the wake-up signal in the first time domain resource, the physical downlink control channel (PDCCH) is monitored in the first group of cells; Wherein, the first group of cells includes at least one cell, the first group of cells is a group of cells in N groups of cells, the first time domain resource is a group of time domain resources in N groups of time domain resources, and the different groups of time domain resources in the N groups of time domain resources are used to carry wake-up signals indicating monitoring PDCCH in different groups of cells in the N groups of cells, where N is an integer greater than 1.

8. The method according to claim 7, characterized in that, Before receiving the wake-up signal for the first time-domain resource, the method further includes: Receive first configuration information, which includes information on M cells configured for the terminal device, wherein the N groups of cells include cells belonging to the M cells, and M is an integer greater than 1.

9. The method according to claim 7 or 8, characterized in that, The first group of cells is any one of the following: All cells located within the frequency range 1FR1 are configured for the terminal equipment; All cells located within the frequency range 2FR2 are configured for the terminal equipment; All cells configured for the terminal device; A set of cells configured for terminal devices.

10. The method according to any one of claims 7 to 9, characterized in that, The N groups of cells further include a second group of cells, the second group of cells including at least one cell, and after monitoring the PDCCH in the first group of cells, the method further includes: Receive control information, the control information indicating that PDCCH should be monitored within the second group of cells; Based on the control information, the PDCCH is monitored within the second group of cells.

11. The method according to any one of claims 7 to 10, characterized in that, The method further includes: Receive second configuration information, which indicates the correspondence between the N groups of time-domain resources and the N groups of cells.

12. The method according to any one of claims 7 to 11, characterized in that, The wake-up signal includes the first piece of information among N pieces of information, the first piece of information indicating that a terminal device or a group of terminal devices monitors the PDCCH, and the different pieces of information among the N pieces of information indicating that different terminal devices or different groups of terminal devices monitor the PDCCH.

13. The method according to any one of claims 7 to 12, characterized in that, The method is applied to a terminal device, which is in a connected state.

14. A communication method, characterized in that, include: Send a wake-up signal, the wake-up signal including a first identifier, the first identifier indicating that the physical downlink control channel (PDCCH) is monitored in the first group of cells; Send PDCCH within the first group of cells; Wherein, the first group of cells includes at least one cell, the first group of cells is a group of cells in N groups of cells, the first identifier is an identifier among N identifiers, and different identifiers among the N identifiers indicate PDCCH monitoring in different groups of cells in the N groups of cells, where N is an integer greater than 1.

15. A communication method, characterized in that, include: Send a wake-up signal in the first time domain resource; Transmit the Physical Downlink Control Channel (PDCCH) within the first group of cells; Wherein, the first group of cells includes at least one cell, the first group of cells is a group of cells in N groups of cells, the first time domain resource is a group of time domain resources in N groups of time domain resources, and the different groups of time domain resources in the N groups of time domain resources are used to carry wake-up signals indicating monitoring PDCCH in different groups of cells in the N groups of cells, where N is an integer greater than 1.

16. A communication device, characterized in that, It includes modules or units for performing the method of any one of claims 1 to 6; or, it includes modules or units for performing the method of any one of claims 7 to 13; or, it includes modules or units for performing the method of claim 14; or, it includes modules or units for performing the method of claim 15.

17. A communication device, characterized in that, The device includes a processor configured to cause the communication device to perform the method of any one of claims 1 to 6; or, configured to cause the communication device to perform the method of any one of claims 7 to 13; or, configured to cause the communication device to perform the method of claim 14; or, configured to cause the communication device to perform the method of claim 15.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 6; or cause the communication device to perform the method as described in any one of claims 7 to 13; or cause the communication device to perform the method as described in claim 14; or cause the communication device to perform the method as described in claim 15.

19. A computer program product, characterized in that, The computer program product includes a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 6; or cause the communication device to perform the method as described in any one of claims 7 to 13; or cause the communication device to perform the method as described in claim 14; or cause the communication device to perform the method as described in claim 15.

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