Method for receiving wake-up signal, method for transmitting wake-up signal, and related devices

Abstract

Embodiments of the present application provide a method for receiving a wake-up signal, a method for sending a wake-up signal, and related devices. The method for receiving the wake-up signal includes: a terminal device determines a target cell, and the target cell is determined according to the air interface propagation delay value corresponding to the cell in which the terminal device performs carrier aggregation. The air interface propagation delay value corresponding to the cell in which the terminal device performs carrier aggregation is the air interface propagation delay value between the network device corresponding to the cell in which the terminal device performs carrier aggregation and the terminal device; the terminal device receives a wake-up signal on the target cell, and the wake-up signal is used to control whether the terminal device is activated during the active period in the cell in which the terminal device performs carrier aggregation. The method provided by the present application enables the wake-up signal received by the terminal device to effectively adapt to the discontinuous reception (DRX) mechanism, thereby achieving the purpose of energy saving.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technologies, and specifically to a method for receiving a wake-up signal, a method for sending a wake-up signal, and related devices. Background Art

[0002] In non-terrestrial networks (NTN), due to the large differences in the distances between different satellites (including different satellites in the same orbit and different satellites in different orbits) and a terminal device, there is a large time delay difference in the data sent by different satellites received by the terminal device. Therefore, when performing carrier aggregation on cells (which can also be understood as carriers) corresponding to different satellites, there is a large propagation time delay difference between different cells (including the primary cell and the secondary cell), which can reach up to dozens of milliseconds, or even hundreds of milliseconds.

[0003] In the above carrier aggregation scenario, how to enable the wake-up signal received by the terminal device to effectively adapt to the discontinuous reception (DRX) mechanism, so as to achieve the purpose of energy saving is a problem to be solved. Summary of the Invention

[0004] Embodiments of the present application provide a method for receiving a wake-up signal, a method for sending a wake-up signal, and related devices. Through some embodiments of the present application, the wake-up signal received by the terminal device can effectively adapt to the DRX mechanism, so as to achieve the purpose of energy saving.

[0005] In a first aspect, embodiments of the present application provide a method for receiving a wake-up signal, and the method includes:

[0006] The terminal device determines a target cell, and the target cell is determined according to the air interface propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation. The air interface propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is the air interface propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device;

[0007] The terminal device receives a wake-up signal on the target cell, and the wake-up signal is used to control whether the terminal device is activated during the active period in the cells for which the terminal device performs carrier aggregation.

[0008] In embodiments of the present application, the number of target cells may be one. In this case, the terminal device receives a wake-up signal on one target cell, and the wake-up signal received by the terminal device on the one target cell is used to control whether the terminal device is activated during the active period in the cells for which the terminal device performs carrier aggregation. The number of target cells may also be multiple. In this case, the terminal device may receive wake-up signals on multiple target cells, and each wake-up signal is used to control whether the terminal device is activated during the active period in a part of the cells for which the terminal device performs carrier aggregation.

[0009] The terminal device can determine the target cell in multiple ways. Exemplarily, the terminal device can first determine one or more candidate cells according to the radio air interface propagation delay value corresponding to each cell, and then determine it by indicating to the network device; or after indicating one or more candidate cells to the network device, receive the feedback information from the network device to determine; or the terminal device directly indicates the radio air interface propagation delay value corresponding to each cell to the network device, and then the network device determines the target cell and indicates it to the terminal device to determine.

[0010] In the embodiments of the present application, the terminal device first determines one or more target cells according to the radio air interface propagation delay value corresponding to the cell, and then receives the wake-up signal sent by the network device on the one or more target cells, which can enable the terminal device to effectively control the active period on the cell indicated by the wake-up signal after receiving the wake-up signal, that is, the wake-up signal received by the terminal device can effectively adapt to the DRX mechanism, so as to achieve the purpose of energy saving.

[0011] In a possible implementation manner, before the terminal device determines the target cell, the method further includes:

[0012] The terminal device sends first indication information to the network device, and the first indication information is used to indicate one or more cells, and the one or more cells include the target cell; the one cell is the cell with the smallest radio air interface propagation delay value among the cells of the carrier aggregation, and the multiple cells are the cells with relatively small radio air interface propagation delay values among the cells of the carrier aggregation.

[0013] In a possible implementation manner, the method further includes:

[0014] The terminal device receives second indication information sent by the network device, and the second indication information is used to confirm the first indication information; or,

[0015] The terminal device receives second indication information sent by the network device, and the second indication information is used to indicate the target cell, and the target cell is one of the multiple cells.

[0016] In a possible implementation manner, the first indication information is further used to indicate the radio air interface propagation delay value corresponding to each of the multiple cells; the target cell is the cell with the smallest radio air interface propagation delay value among the multiple cells.

[0017] In a possible implementation manner, before the terminal device determines the target cell, the method further includes:

[0018] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the cells for receiving wake-up signals in each of the M cell groups; wherein, the M cell groups are obtained by grouping the cells of the carrier aggregation, and the absolute value of the difference between the radio propagation delay values corresponding to any two cells in each of the M cell groups is less than or equal to a first threshold; the first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1.

[0019] In a possible implementation, the first indication information is further used to indicate other cells in each of the cell groups.

[0020] In a possible implementation, the method further includes:

[0021] The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is determined according to the cells for receiving wake-up signals in at least one of the M cell groups; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the first cell group, the first cell group includes the target cell, and the first cell group is included in the at least one cell group.

[0022] In a possible implementation, the cell for receiving the wake-up signal is the cell with the smallest radio propagation delay value corresponding to the cell group where the cell for receiving the wake-up signal is located.

[0023] In a possible implementation, before the terminal device determines the target cell, the method further includes:

[0024] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the radio propagation delay value corresponding to each cell of the carrier aggregation;

[0025] The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is the cell with the smallest radio propagation delay value among the cells of the carrier aggregation.

[0026] In a possible implementation, before the terminal device determines the target cell, the method further includes:

[0027] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the radio propagation delay value corresponding to each cell of the carrier aggregation;

[0028] The terminal device receives second indication information sent by the network device. The second indication information is used to indicate the target cell, where the target cell is a cell for receiving a wake-up signal in each of N cell groups; the second indication information is further used to indicate other cells in each of the cell groups. Wherein, the N cell groups are obtained by grouping cells in carrier aggregation, and the absolute value of the difference between the radio propagation delay values corresponding to any two cells in each of the N cell groups is less than or equal to a second threshold, and the second threshold is determined by the network device, and N is a number greater than or equal to 1; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the second cell group; the second cell group includes the target cell, and the second cell group is included in the N cell groups.

[0029] In a possible implementation manner, the target cell is a cell with the smallest radio propagation delay value in the cell group where the target cell is located.

[0030] In a possible implementation manner, the terminal device determines the target cell including:

[0031] The terminal device determines the target cell according to the first indication information or the second indication information.

[0032] In a second aspect, an embodiment of the present application provides a method for receiving a wake-up signal. The method includes:

[0033] The terminal device determines a target secondary cell; the target secondary cell is determined according to the radio propagation delay value corresponding to the cell in which the terminal device performs carrier aggregation, and the radio propagation delay value corresponding to the cell is the radio propagation delay value between the network device corresponding to the cell and the terminal device.

[0034] The terminal device receives a wake-up signal on the primary cell; the wake-up signal is used to control whether the terminal device is activated during the activation period in the target secondary cell and the primary cell.

[0035] In a possible implementation manner, before the terminal device determines the target secondary cell, the method further includes:

[0036] The terminal device sends first indication information to the network device, and the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell.

[0037] In a possible implementation manner, the method further includes:

[0038] The terminal device receives second indication information sent by the network device, and the second indication information is used to confirm the first indication information; or,

[0039] The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target secondary cell, and the target secondary cell is determined according to the one or more secondary cells.

[0040] In a possible implementation manner, the terminal device determines a target cell, including:

[0041] The terminal device determines the target cell according to the first indication information or the second indication information.

[0042] In a possible implementation manner, before the terminal device determines the target secondary cell, the method further includes:

[0043] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the radio propagation delay value corresponding to each cell of the carrier aggregation;

[0044] The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target secondary cell.

[0045] In a possible implementation manner, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

[0046] In a possible implementation manner, the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0047] In a possible implementation manner, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to the third threshold, and the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0048] In a third aspect, an embodiment of the present application provides a method for sending a wake-up signal, where the method includes:

[0049] The network device determines a target cell, where the target cell is determined according to the radio propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation, and the radio propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is the radio propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device;

[0050] The network device sends a wake-up signal on the target cell, where the wake-up signal is used to control whether the terminal device is activated during the activation period within the carrier aggregation cell.

[0051] In a possible implementation manner, before the network device determines the target cell, the method further includes:

[0052] The network device receives first indication information sent by the terminal device. The first indication information is used to indicate one or more cells, and the one or more cells include the target cell. One cell is the cell with the smallest corresponding radio interface propagation delay value among the cells of the carrier aggregation, and the multiple cells are the cells with relatively small corresponding radio interface propagation delay values among the cells of the carrier aggregation.

[0053] In a possible implementation, the target cell is one of the one cell or the multiple cells.

[0054] Before the network device sends a wake-up signal on the target cell, the method further includes:

[0055] The network device sends second indication information to the terminal device. The second indication information is used to confirm the first indication information; or,

[0056] The network device sends second indication information to the terminal device. The second indication information is used to indicate the target cell.

[0057] In a possible implementation, the first indication information is further used to indicate the corresponding radio interface propagation delay value of each cell in the multiple cells. The target cell is the cell with the smallest corresponding radio interface propagation delay value among the multiple cells.

[0058] In a possible implementation, before the network device determines the target cell, the method further includes:

[0059] The network device receives first indication information sent by the terminal device. The first indication information is used to indicate the cell for receiving a wake-up signal in each of M cell groups. Wherein, the M cell groups are obtained by grouping the cells of the carrier aggregation, and the absolute value of the difference between the corresponding radio interface propagation delay values of any two cells in each of the M cell groups is less than or equal to a first threshold. The first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1.

[0060] In a possible implementation, the first indication information is further used to indicate other cells in each cell group.

[0061] In a possible implementation, the target cell is determined according to the cell for receiving a wake-up signal in at least one of the M cell groups. The wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the first cell group. The first cell group includes the target cell, and the first cell group is included in the at least one cell group.

[0062] In a possible implementation, before the network device sends a wake-up signal on the target cell, the method further includes:

[0063] The network device sends second indication information to the terminal device, and the second indication information is used to indicate the target cell.

[0064] In a possible implementation, the cell for receiving the wake-up signal is the cell with the smallest radio interface propagation delay value corresponding to the cell group where the cell for receiving the wake-up signal is located.

[0065] In a possible implementation, before the network device determines the target cell, the method further includes:

[0066] The network device receives first indication information sent by the terminal device, and the first indication information is used to indicate the radio interface propagation delay value corresponding to each cell of the carrier aggregation;

[0067] The target cell is the cell with the smallest radio interface propagation delay value among the cells of the carrier aggregation;

[0068] In a possible implementation, before the network device sends a wake-up signal on the target cell, the method further includes:

[0069] The network device sends second indication information to the terminal device, and the second indication information is used to indicate the target cell.

[0070] In a possible implementation, before the network device determines the target cell, the method further includes:

[0071] The network device receives first indication information sent by the terminal device, and the first indication information is used to indicate the radio interface propagation delay value corresponding to each cell of the carrier aggregation;

[0072] The target cell is the cell for receiving the wake-up signal in each of the N cell groups, the N cell groups are obtained by grouping the cells of the carrier aggregation, the absolute value of the difference between the radio interface propagation delay values corresponding to any two cells in each of the N cell groups is less than or equal to a second threshold, the second threshold is determined by the network device, and N is a number greater than or equal to 1; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the second cell group; the second cell group includes the target cell, and the second cell group is included in the N cell groups;

[0073] In a possible implementation, before the network device sends a wake-up signal on the target cell, the method further includes:

[0074] The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell and other cells in each cell group.

[0075] In a possible implementation manner, the target cell is the cell with the smallest radio interface propagation delay value in the cell group where the target cell is located.

[0076] In a possible implementation manner, the network device determines the target cell including:

[0077] The network device determines the target cell according to the first indication information.

[0078] In a fourth aspect, an embodiment of the present application provides a method for sending a wake-up signal, and the method includes:

[0079] The network device determines a target secondary cell; the target secondary cell is determined by the radio interface propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation, and the radio interface propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is the radio interface propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device;

[0080] The network device sends a wake-up signal on the primary cell; the wake-up signal is used to control whether the terminal device is activated during the activation period in the target secondary cell and the primary cell.

[0081] In a possible implementation manner, before the network device determines the target secondary cell, the method further includes:

[0082] The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell.

[0083] In a possible implementation manner, the target secondary cell is determined according to the multiple secondary cells;

[0084] Before the network device sends a wake-up signal on the primary cell, the method further includes:

[0085] The network device sends second indication information to the terminal device, where the second indication information is used to confirm the first indication information; or,

[0086] The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target secondary cell.

[0087] In a possible implementation manner, the terminal device determines the target cell, including:

[0088] The terminal device determines the target cell according to the first indication information.

[0089] In a possible implementation manner, before the network device determines the target secondary cell, the method further includes:

[0090] The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate the radio propagation delay value corresponding to each cell for carrier aggregation.

[0091] The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target secondary cell.

[0092] In a possible implementation manner, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

[0093] In a possible implementation manner, the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0094] In a possible implementation manner, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to the third threshold, and the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0095] In a fifth aspect, an embodiment of the present application provides a terminal device, including:

[0096] A processing unit, configured to determine a target cell, where the target cell is determined according to the radio propagation delay value corresponding to the cell for carrier aggregation by the terminal device, and the radio propagation delay value corresponding to the cell for carrier aggregation is the radio propagation delay value between the network device corresponding to the cell for carrier aggregation and the terminal device.

[0097] A communication unit, configured to receive a wake-up signal on the target cell, where the wake-up signal is used to control whether the terminal device is activated during the activation period within the cells for carrier aggregation.

[0098] In a sixth aspect, an embodiment of the present application provides a terminal device, including:

[0099] A processing unit, configured to determine a target secondary cell; the target secondary cell is determined according to the radio propagation delay value corresponding to the cell for carrier aggregation by the terminal device, and the radio propagation delay value corresponding to the cell for carrier aggregation is the radio propagation delay value between the network device corresponding to the cell for carrier aggregation and the terminal device.

[0100] A communication unit, configured to receive a wake-up signal on the primary cell, where the wake-up signal is used to control whether the terminal device is activated during the activation period within the target secondary cell and the primary cell.

[0101] In a seventh aspect, an embodiment of the present application provides a network device, including:

[0102] a processing unit, configured to determine a target cell, where the target cell is determined according to a radio air interface propagation delay value corresponding to a cell for which a terminal device performs carrier aggregation, and the radio air interface propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is a radio air interface propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device;

[0103] a communication unit, configured to send a wake-up signal on the target cell, where the wake-up signal is used to control whether the terminal device is activated during an active period within the cell for which the terminal device performs carrier aggregation.

[0104] In an eighth aspect, an embodiment of the present application provides a network device, including:

[0105] a processing unit, configured to determine a target secondary cell; the target secondary cell is determined according to a radio air interface propagation delay value corresponding to a cell for which a terminal device performs carrier aggregation, and the radio air interface propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is a radio air interface propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device;

[0106] a communication unit, configured to send a wake-up signal on a primary cell; the wake-up signal is used to control whether the terminal device is activated during an active period within the target secondary cell and the primary cell.

[0107] In a ninth aspect, an embodiment of the present application provides a terminal device, including: a processor and a transceiver;

[0108] The transceiver is configured to receive or send a signal; the processor is configured to execute computer-executable instructions stored in a memory, so that the terminal device executes the method in the first aspect and the second aspect or any possible implementation manner of the first aspect and the second aspect.

[0109] In a tenth aspect, an embodiment of the present application provides a network device, including: a processor and a transceiver;

[0110] The transceiver is configured to receive or send a signal; the processor is configured to execute computer-executable instructions stored in a memory, so that the network device executes the method in the third aspect and the fourth aspect or any possible implementation manner of the third aspect and the fourth aspect.

[0111] In an eleventh aspect, an embodiment of the present application provides a data transmission system, including a terminal device and a network device; the terminal device is configured to execute the method in the first aspect or any possible implementation manner of the first aspect, and the network device is configured to execute the method in the third aspect or any possible implementation manner of the third aspect;

[0112] Alternatively, the terminal device is used to execute the method in the second aspect or any possible implementation manner of the second aspect, and the network device is used to execute the method in the fourth aspect or any possible implementation manner of the fourth aspect;

[0113] In a twelfth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program runs on one or more processors, the methods in the first aspect to the fourth aspect or any possible implementation manner of the first aspect to the fourth aspect are executed.

[0114] In a thirteenth aspect, an embodiment of the present application provides a computer program product, which includes program instructions. When the program instructions are executed by a processor, the processor executes the methods in the first aspect to the fourth aspect or any possible implementation manner of the first aspect to the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0115] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following briefly introduces the drawings required to be used in the embodiments of the present application or the background art.

[0116] Figure 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0117] Figure 2 is a schematic diagram of a model for calculating the maximum differential delay value provided by an embodiment of the present application;

[0118] Figure 3 is a schematic diagram of a scenario for carrier aggregation of component carriers from different satellites on different orbits provided by an embodiment of the present application;

[0119] Figure 4 is a schematic diagram of a scenario for carrier aggregation of component carriers from different satellites on the same orbit provided by an embodiment of the present application;

[0120] Figure 5 is a schematic diagram of a scenario for carrier aggregation of component carriers from the same satellite and different network devices provided by an embodiment of the present application;

[0121] Figure 6 is a schematic diagram of a DRX cycle provided by an embodiment of the present application;

[0122] Figure 7 is a schematic diagram of the relationship between a wake-up signal and an active period in a single cell provided by an embodiment of the present application;

[0123] Figure 8It is a schematic diagram of the relationship between the wake-up signal and the activation period in multiple cells provided by an embodiment of the present application;

[0124] Figure 9 It is a schematic diagram of DRX configuration when carrier aggregation is adopted in a terrestrial network provided by an embodiment of the present application;

[0125] Figure 10 It is a schematic diagram of DRX configuration when carrier aggregation is adopted in NTN provided by an embodiment of the present application;

[0126] Figure 11 It is a schematic flowchart of a method for receiving a wake-up signal provided by an embodiment of the present application;

[0127] Figure 12 It is a schematic flowchart of another method for receiving a wake-up signal provided by an embodiment of the present application;

[0128] Figure 13 It is a schematic diagram of a terminal device receiving a wake-up signal on a cell with the minimum air interface propagation delay value corresponding thereto;

[0129] Figure 14 It is a schematic flowchart of another method for receiving a wake-up signal provided by an embodiment of the present application;

[0130] Figure 15 It is a schematic diagram of a terminal device receiving a wake-up signal on multiple cells provided by an embodiment of the present application;

[0131] Figure 16 It is a schematic flowchart of yet another method for receiving a wake-up signal provided by an embodiment of the present application;

[0132] Figure 17 It is a schematic flowchart of yet another method for receiving a wake-up signal provided by an embodiment of the present application;

[0133] Figure 18 It is a schematic diagram of a terminal device receiving a wake-up signal on a primary cell and using the wake-up signal to control the primary cell and a target secondary cell provided by an embodiment of the present application;

[0134] Figure 19 It is a schematic diagram of the structure of a terminal device provided by an embodiment of the present application

[0135] Figure 20 It is a schematic diagram of the structure of a network device provided by an embodiment of the present application;

[0136] Figure 21 It is a schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0137] Figure 22It is a schematic structural diagram of a module device provided by an embodiment of the present application. Detailed implementation manners

[0138] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and appended claims of the present application, the singular forms "a", "an", "the above", "the", and "this" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term " / and / " used in the present application refers to and includes any or all possible combinations of one or more of the listed items. The terms "first" and "second" etc. in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order.

[0139] A non-terrestrial network (NTN) can be understood as a network that uses platforms such as satellites or unmanned aircraft systems (UAS) for wireless frequency transmission. Exemplarily, compared with traditional terrestrial networks, such as long term evolution (LTE) networks, NTN can use satellites or high-altitude platforms (HAP) for network deployment.

[0140] Typical scenarios applicable to NTN can include full terrain coverage, signaling offloading, emergency communication, Internet of Things, and broadcast services, etc. Exemplarily, NTN can be applicable to scenarios where it is impossible to build base stations, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests; or, NTN can be applicable to scenarios where base stations are damaged, such as emergency communication when disasters occur or base stations are damaged; or, NTN can be applicable to network coverage on high-speed moving vehicles. For example, due to high costs and physical condition limitations, it is difficult to use traditional terrestrial base station methods for network coverage on high-speed moving vehicles such as airplanes or high-speed trains. In the above cases, the full terrain coverage advantage of NTN can be utilized for network coverage.

[0141] Exemplarily, in order to more clearly describe the solution provided by the present application and facilitate understanding, the following takes a satellite communication system as an example to introduce the related terms involved in the embodiments of the present application.

[0142] 1. Network architecture

[0143] Please refer to Figure 1 , Figure 1 It is a schematic architecture diagram of a communication system provided by an embodiment of the present application. As Figure 1As shown, the communication system includes a satellite, terminal devices, and a gateway (which can also be understood as a ground station or an earth station, etc.). Among them, the part 101 can be understood as the coverage area of a cell of the satellite, and this coverage area can include one or more beams. For example, Figure 1 each dashed ellipse in it can be understood as a beam, and the part 101 includes 20 beams. It can be understood that within the coverage area of a cell, there can be one or more terminal devices, and there can also be one or more gateways.

[0144] In this communication system, the wireless link between the satellite and the terminal device can be called a service link, and the wireless link between the satellite and the gateway can be called a feedback link. In some embodiments, there can also be an inter-satellite link for providing data backhaul between satellites. It can be understood that generally, one or several gateways of this communication system need to be connected to a public data network (PDN), such as Figure 1 the network in

[0145] Exemplarily, the terminal device may also be referred to as user equipment (UE), terminal, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal device may be a mobile station (MS), user unit, drone, Internet of Things (IoT) device, station (ST) in wireless local area networks (WLAN), cellular phone, smartphone, cordless phone, wireless data card, tablet computer, Session Initiation Protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA) device, laptop computer, machine type communication (MTC) terminal, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device (which may also be referred to as a wearable intelligent device). The terminal device may also be a terminal device in a next-generation communication system, for example, a terminal device in a 5G system or a terminal device in a future evolved public land mobile network (PLMN), a terminal device in a new radio (NR) system, etc.

[0146] It can be understood that the base station deployment in this communication system can be in different locations. For example, in some embodiments, the base station can be deployed on land, such as Figure 1 The gateway station in the above case can have the functions of a base station. In this situation, the satellite will act as a relay between the terminal device and the gateway station, receive the data sent by the terminal device through the service link, and then forward the data to the ground gateway station through the feedback link.

[0147] In some other embodiments, the base station can also be deployed on a satellite, such as Figure 1 The satellite in the above case can have the functions of a base station. In this situation, the terminal device can communicate with the satellite with base station functions through the service link.

[0148] Thus, it can be understood that regardless of whether the base station is deployed on a satellite in the air or a gateway station on the ground, the terminal device needs to perform data interaction with the satellite. In the embodiments of the present application, the base station can be considered as an evolved Node B (eNB) in the LTE system, or can also be considered as a next-generation node base station (gNB) in the 5G system or NR system.

[0149] In the embodiments of the present application, the network device can be understood as a device that provides communication coverage in a specific geographical area and can communicate with one or more terminal devices located within the coverage area. In some embodiments, the network device can also be used to communicate with one or more devices with partial terminal functions. Exemplarily, the network device can communicate with macro base stations and micro base stations. Exemplarily, the network device can be a base transceiver station (BTS) in a global system for mobile communications (GSM) or code division multiple access (CDMA) system, or an eNB, or a gNB, as well as other satellite base stations and satellite relay nodes, etc. Additionally, the network device can also be an access point (AP), a transport point (TRP), a central unit (CU), or other network entities, and can include some or all of the functions of the above network entities. Exemplarily, Figure 1 for example, if Figure 1 the gateway station in Figure 1 has the function of a base station, then the gateway station can be understood as a network device; if

[0150] the satellite in

[0151] has the function of a base station, then the satellite can be understood as a network device.

[0150] For ease of understanding, the following will uniformly use the network device as the main body to make an exemplary description of the terms or methods involved in the present application.

[0151] 2. Maximum differential delay value

[0152] In a non-terrestrial network, the propagation delay of communication between a terminal device and a network device at different positions within the coverage of a cell or beam is different. Exemplarily, in the embodiments of the present application, the maximum differential delay value can be understood as the difference between the propagation delay corresponding to the position farthest from the network device and the propagation delay corresponding to the position closest to the network device within the coverage of a certain cell or beam.

[0153] Exemplarily, if the maximum differential delay value is calculated for the coverage area of a certain cell, then the maximum differential delay value is the maximum differential delay value at the cell level. It can be understood that the maximum differential delay values corresponding to different cells can be the same or different.

[0154] Exemplarily, if the maximum differential delay value is calculated for the coverage area of a certain beam, then the maximum differential delay value is the maximum differential delay value at the beam level. It can be understood that the maximum differential delay values corresponding to different beam coverage areas can be the same or different.

[0155] Exemplarily, please refer to Figure 2 , Figure 2 which is a schematic diagram of a model for calculating the maximum differential delay value provided by an embodiment of the present application. It can be understood that, Figure 2 the schematic diagram shown takes the coverage area of a beam as an example. As Figure 2 shown, d1 is the closest distance between the satellite and the beam coverage area, and d2 is the farthest distance between the satellite and the beam coverage area.

[0156] It can be understood that since the satellite orbits based on a specific orbit, that is, the movement of the satellite is regular, therefore, the propagation delay change caused by the satellite movement is regular and predictable. Exemplarily, the satellite (or network device) can calculate the maximum differential delay value corresponding to a cell or a beam coverage area through the Pythagorean theorem, which will not be elaborated here.

[0157] In the NTN network, since the satellite is relatively far from the ground and the cell or beam coverage range formed by the satellite is relatively large, there is a large differential delay in a certain cell or a certain beam coverage range. For example, twice the maximum differential delay value of a geostationary satellite is 20.6 milliseconds.

[0158] 3. Carrier Aggregation (CA)

[0159] To improve the peak rate of a single user and enhance the system capacity, the 3rd Generation Partnership Project (3GPP) introduced carrier aggregation in R10. Each carrier participating in carrier aggregation can be called a component carrier (CC). Therefore, carrier aggregation can be understood as a technology in which a terminal device aggregates multiple component carriers together to increase the transmission bandwidth.

[0160] It can be understood that in NTN, there can be multiple carrier aggregation scenarios, and different carrier aggregation scenarios correspond to different delay differences. Exemplarily, please refer to Figure 3 , Figure 3This is a schematic diagram of a scenario for carrier aggregation of component carriers from different satellites in different orbits. As Figure 3 shown, satellite B and satellite C are at the same orbital altitude, and the orbital altitude of satellite A is higher than that of satellite B and satellite C. The carriers transmitted by satellite A, satellite B, and satellite C are aggregated in area 301 on the ground. This area 301 can be understood as the coverage area of a cell or the coverage area of a beam. It can be understood that, due to the height difference between different orbits reaching hundreds or even tens of thousands of kilometers, therefore, for Figure 3 the scenario shown, the time delay difference between different component carriers for carrier aggregation is relatively large, reaching dozens or even hundreds of milliseconds.

[0161] Exemplarily, please refer to Figure 4 Figure 4 This is a schematic diagram of a scenario for carrier aggregation of component carriers from different satellites in the same orbit. As Figure 4 shown, satellite A, satellite B, and satellite C are at the same orbital altitude. The carriers transmitted by satellite A, satellite B, and satellite C are aggregated in area 401 on the ground. This area 401 can be understood as the coverage area of a cell or the coverage area of a beam. It can be understood that, although the satellites are at the same orbital altitude, the distances between different satellites and area 401 are different. Therefore, for Figure 4 the scenario shown, the time delay difference between different component carriers for carrier aggregation is also relatively large. Generally, there is a time delay difference of several milliseconds to dozens of milliseconds between different component carriers.

[0162] Exemplarily, please refer to Figure 5 Figure 5 This is a schematic diagram of a scenario for carrier aggregation of component carriers from the same satellite and different network devices. As Figure 5 shown, gateway station A and gateway station B can be understood as network devices with base station functions. In the above case, the satellite acts as a relay between the terminal device and the network device for data forwarding. As Figure 5 shown, taking the aggregation between two component carriers as an example, the satellite can transmit a first component carrier and a second component carrier. The coverage area of the first component carrier on the ground can be Figure 5 area 501 in Figure 5The 502 area. Among them, the first component carrier can come from gateway station A, and the second component carrier can come from gateway station B. It can be understood that, due to the different distances between gateway station A and gateway station B and the satellite, the time delay of the carrier transmitted by gateway station A reaching the 501 area via the satellite is different from the time delay of the carrier transmitted by gateway station B reaching the 502 area via the satellite, that is, there is also a large time delay difference between the first component carrier and the second component carrier. Generally, the time delay difference can reach 3 milliseconds to 10 milliseconds.

[0163] In summary, it can be seen that in NTN, there is a large time delay difference between different component carriers performing carrier aggregation.

[0164] In addition, it can be understood that when multiple different component carriers perform carrier aggregation, they need to cooperate with each other to work. Exemplarily, multiple different component carriers performing carrier aggregation can be divided into a primary carrier and multiple secondary carriers.

[0165] In the embodiments of the present application, a primary cell (Pcell) can be understood as a cell used for radio resource control (RRC) communication with a terminal device, and the component carrier corresponding to the Pcell can be understood as a primary component carrier (PCC). Exemplarily, the Pcell can be the cell where the terminal device establishes an initial connection, or the cell where the terminal device performs RRC connection reconstruction, or the cell specified by the terminal device during the handover process.

[0166] In the embodiments of the present application, a secondary cell (Scell) can be understood as a cell used to provide additional radio resources to the terminal device, and the component carrier corresponding to the Scell can be understood as a secondary component carrier (SCC). Generally, the Scell can be added during RRC reconfiguration, and there may be no RRC communication between the Scell and the terminal device.

[0167] It can be understood that a terminal device configured with carrier aggregation can be connected to 1 Pcell and multiple Scells. Generally, the Pcell is used to manage other Scells. For example, the Pcell can control when to add or delete a certain or certain Scells.

[0168] 4. Discontinuous reception (DRX)

[0169] It can be understood that packet-based data streams are usually bursty, that is, there is data transmission for a period of time, but there is no data transmission for a relatively long period of time afterwards. When there is no data transmission, power consumption can be reduced by stopping receiving the physical downlink control channel (PDCCH), thereby increasing the battery usage time of the terminal device and achieving the purpose of energy saving.

[0170] Based on this, 3GPP introduced DRX in R13. The basic mechanism of DRX can be understood as that the network device configures a DRX cycle for the terminal device in the RRC connected state. The DRX cycle can include an on duration and an opportunity for DRX or DRX off. Among them, during the on duration, the terminal device listens for and receives the PDCCH; during the DRX off, the terminal device stops receiving the PDCCH (including stopping blind detection of the PDCCH). It can be understood that the dormant terminal device does not receive the PDCCH, but can receive data from other physical channels, such as the physical downlink shared channel (PDSCH).

[0171] Exemplarily, please refer to Figure 6 , Figure 6 which is a schematic diagram of a DRX cycle provided by an embodiment of the present application. As Figure 6 shown, in the time domain, the time of the terminal device configured with the DRX mechanism is divided into consecutive DRX cycles.

[0172] It can be understood that if the terminal device does not receive the PDCCH for a long time, then if data arrives, the data transmission delay will increase. Therefore, the selection of the DRX cycle needs to consider the balance between battery saving and delay. Exemplarily, a long DRX cycle is beneficial to extending the battery usage time of the terminal device. For example, during the process of using the terminal device to browse the web, when the user is reading the already downloaded web page, continuously receiving downlink data is a waste of resources. Exemplarily, when there is new data transmission, a shorter DRX cycle is beneficial for faster response. For example, when the terminal device requests another web page or makes a voice over internet protocol (pVoIP) call, a short DRX cycle is required to reduce the delay.

[0173] To meet the above requirements, each terminal device can be configured with two different DRX cycles, such as shortDRX-Cycle and longDRX-Cycle. Exemplarily, when the terminal device is configured with a shortDRX-Cycle, the longDRX-Cycle should be configured as a multiple of the shortDRX-Cycle. It can be understood that at any given time, the terminal device uses one of the configurations.

[0174] It can be understood that to support the DRX mechanism, the network device can configure DRX-related timers and other parameters for the terminal device. Exemplarily, drxStartOffset can specify the starting subframe of the DRX cycle, and longDRX-Cycle can specify how many subframes a long DRX cycle occupies (i.e., the number of consecutive subframes). The above two parameters can both be determined by the longDRX-CycleStartOffset field. onDurationTimer can specify the number of consecutive PDCCH subframes that need to listen for the PDCCH starting from the starting subframe of the DRX cycle.

[0175] It can be understood that in the carrier aggregation scenario, the terminal device can be configured with at most 2 sets of DRX configurations, and the two sets of DRX configurations only differ in the sizes of the on-duration timer and the inactive-timer, and other configuration parameters are the same (such as the DRX cycle, the starting time domain position of the DRX). In some embodiments, when the terminal device is configured with multiple secondary cells, if the network device only configures one set of DRX parameters, all cells can share the same set of DRX configurations. If the network configures two sets of DRX parameters, then one set of DRX parameters can be for the secondary cells in the FR1 band, and the other set of DRX parameters can be for the secondary cells in the FR2 band.

[0176] 5. Wake-up signal (WUS)

[0177] To further save the power consumption of the terminal device in the RRC connected state, 3GPP introduced a wake-up signal (which can be understood as DCI format 2_6) in R16. It can be understood that before the introduction of the wake-up signal, the terminal device would be activated during the on duration of each DRX cycle and then listen for the PDCCH. After the introduction of the wake-up signal, the terminal device needs to receive the wake-up signal before the on duration of each DRX cycle, determine whether to activate during the on duration according to the indication of the wake-up signal, and then listen for the PDCCH.

[0178] Exemplarily, please refer toFigure 7 , Figure 7 is a schematic diagram of the relationship between wake-up signals and activation periods in a single cell provided by an embodiment of the present application. As Figure 7 shown, the terminal device can receive the wake-up signal A sent by the network device before the activation period A, and determine whether to activate during the activation period A according to the indication of the wake-up signal A; similarly, the terminal device can receive the wake-up signal B sent by the network device before the activation period B, and determine whether to activate during the activation period B according to the indication of the wake-up signal B.

[0179] In some embodiments, the network device can send wake-up signals in a multicast manner. Therefore, the wake-up signals received by each terminal device can include multiple bit blocks, and each bit block corresponds to the energy-saving indication information of a terminal device. Exemplarily, the energy-saving indication information can include a wake-up indication and a secondary cell dormancy indication. That is, each bit block can include 1 bit of wake-up indication and X bits of secondary dormancy indication, where the value of the above X can be determined by the number of secondary cells or the number of secondary cell groups configured by the network. The terminal device can determine whether to start the on-duration timer of the cell according to the above 1-bit wake-up indication. In some embodiments, if the information in the wake-up indication instructs the terminal device to start the on-duration timer, the terminal device can determine whether to monitor the PDCCH on the corresponding secondary cell according to the value of the above X bits.

[0180] Exemplarily, please refer to Figure 8 , Figure 8 is a schematic diagram of the relationship between wake-up signals and activation periods in multiple cells provided by an embodiment of the present application. As Figure 8 shown, on the primary cell, the terminal device receives the wake-up signal (i.e., Figure 8 WUS in) before each activation period (which can be understood as on-duration). If the wake-up signal indicates waking up the next activation period, then the terminal device will activate on the next activation period of the primary cell and secondary cells (such as secondary cell A, secondary cell B, and secondary cell C), and then monitor the PDCCH; if the wake-up signal indicates dormancy in the next activation period, then the terminal device can go dormant in the next DRX cycle of the primary cell and secondary cells. That is to say, the terminal device can be in a dormant state throughout the next DRX cycle and does not receive the PDCCH.

[0181] It can be understood that in a terrestrial network, since the distance between network devices and terminal devices is short, the time delay difference between different component carriers for carrier aggregation is small and can be ignored. Therefore, it can be considered that the data of different carriers arrive at the terminal device at time slot alignment or frame alignment.

[0182] Exemplarily, please refer to Figure 9 , Figure 9 which is a schematic diagram of DRX configuration when carrier aggregation is adopted in a terrestrial network provided by an embodiment of the present application. As Figure 9 shown, the terminal device exemplarily performs carrier aggregation on 3 cells. Among them, the primary cell corresponds to the primary component carrier, the secondary cell A corresponds to the secondary component carrier A, and the secondary cell B corresponds to the secondary component carrier B.

[0183] It can be understood that different component carriers for carrier aggregation can come from the same network device or different network devices. Therefore, the above-mentioned network device can be understood as one network device or multiple network devices. It can be understood that regardless of whether the component carriers come from the same network device or multiple network devices, the network device sends a certain frame of data to the terminal device at the same moment, and then the terminal device receives it.

[0184] As Figure 9 each rectangle in can be understood as an on duration. Exemplarily, assume that the frame number of the starting time domain position of this on duration is M. The network device sends the data with frame number M to the terminal device through the primary component carrier, the secondary component carrier A, and the secondary component carrier B at time T0. Then, the terminal device can receive the above-mentioned data with frame number M at time T1 through different cells (such as Figure 9 the primary cell, the secondary cell A, the secondary cell B, and the secondary cell C in). Therefore, it can be considered that in a terrestrial network, the starting time domain positions of on durations in different cells are aligned.

[0185] However, in NTN, since the distance between the satellite and the terminal device is long, in different carrier aggregation scenarios (such as Figure 3 , Figure 4 and Figure 5 the scenarios shown), the time delay difference between different component carriers is large. Therefore, it can be considered that the data of different carriers cannot arrive at the terminal device at time slot alignment or frame alignment.

[0186] Exemplarily, please refer to Figure 10 , Figure 10 which is a schematic diagram of DRX configuration when carrier aggregation is adopted in NTN provided by an embodiment of the present application. As Figure 10As shown, the terminal device exemplarily performs carrier aggregation on three cells. Among them, the primary cell corresponds to the primary component carrier, secondary cell A corresponds to secondary component carrier A, and secondary cell B corresponds to secondary component carrier B.

[0187] As Figure 10 Each rectangle in can be understood as an on duration. Exemplarily, assume that the frame number of the starting time domain position of this on duration is N. The network device sends data with frame number N to the terminal device through the primary component carrier, secondary component carrier A, and secondary component carrier B at time T0 respectively. Then, the terminal device can receive the data with frame number N from the primary cell at time T1; receive the data with frame number N from secondary cell A at time T2; and receive the data with frame number N from secondary cell B at time T3. It can be understood that the above times T1, T2, and T3 are different times, which can be specifically determined by the time delay between the terminal device and the network device. Therefore, it can be considered that in NTN, the starting time domain positions of the on durations in different cells are not aligned.

[0188] In the case where the communication system adopts carrier aggregation and the DRX mechanism, how to make the wake-up signal received by the terminal device effectively adapt to the DRX mechanism so as to achieve the purpose of energy saving is a problem to be solved.

[0189] Based on this, the embodiments of the present application provide a method for receiving a wake-up signal, a method for sending a wake-up signal, and related devices. Through some embodiments of the present application, the wake-up signal received by the terminal device can effectively adapt to the DRX mechanism so as to achieve the purpose of energy saving. It can be understood that the wake-up signal is a signal sent by the network device and received by the terminal device. Therefore, the above method for receiving a wake-up signal can be executed by the terminal device, and the above method for sending a wake-up signal can be executed by the network device. Since the Figure 1 relevant descriptions in the previous text already include the descriptions of the terminal device and the network device, they will not be elaborated here. In addition, for the sake of understanding, the following will explain the method provided by the present application by combining the terminal device and the network device.

[0190] Exemplarily, please refer to Figure 11 , Figure 11 is a schematic flowchart of a method for receiving a wake-up signal provided by an embodiment of the present application. Among them, the method includes:

[0191] 1101: The terminal device determines a target cell, which is determined by the air interface propagation delay value corresponding to the cell on which the terminal device performs carrier aggregation. The air interface propagation delay value corresponding to the cell on which the terminal device performs carrier aggregation is the air interface propagation delay value between the network device corresponding to the cell on which the terminal device performs carrier aggregation and the terminal device.

[0192] It can be understood that each component for which the terminal device performs carrier aggregation can be referred to as a cell or a carrier. For the relevant descriptions of carrier aggregation, reference can be made to Part 3 of the foregoing text, which will not be elaborated here. Additionally, for ease of understanding, the subsequent embodiments will be uniformly described in terms of cells.

[0193] It can be understood that there can be multiple cells for which the terminal device performs carrier aggregation. Exemplarily, the terminal device can aggregate 5 cells or 32 cells, etc. The one or more target cells can be understood as a part of the multiple cells for which the terminal device performs carrier aggregation. The multiple cells for which the terminal device performs carrier aggregation can be from the same network device or from different network devices. In the embodiments of the present application, the air interface propagation delay value corresponding to each cell for which the terminal device performs carrier aggregation can be obtained through the following method:

[0194] For ease of understanding, any cell for which the terminal device performs carrier aggregation can be denoted as the first component cell.

[0195] The terminal device can obtain the configuration information of the first component cell through the network device corresponding to the first component cell. Since in carrier aggregation, the primary cell can be used to manage other secondary cells, the terminal device can also obtain the configuration information of the first component cell through the network device corresponding to the primary cell. Exemplarily, the terminal device can obtain the specific configuration of the first component cell by receiving the configuration information (such as RRC signaling) sent by the network device.

[0196] On the one hand, in NTN, the air interface propagation delay value between the terminal device and the network device is often related to the satellite. The terminal device can obtain its own location information through the global navigation satellite system (GNSS). Then, the terminal device can determine the air interface propagation delay value from the satellite corresponding to the first component cell to the terminal device based on the ephemeris information of the satellite corresponding to the first component cell and the location information of the terminal device. In the embodiments of the present application, this air interface propagation delay value can be denoted as the terminal device - satellite delay value.

[0197] On the other hand, the terminal device can obtain the air interface propagation delay value between the satellite corresponding to the first component cell and the network device corresponding to the first component cell through RRC signaling, or the medium access control element (MAC CE), or system information. In the embodiments of the present application, this air interface propagation delay value can be denoted as the satellite - network device delay value.

[0198] Finally, the air interface propagation delay value corresponding to the first component cell is equal to the terminal device-satellite delay value plus the satellite-network device delay value. It can be understood that if the network device is deployed on the satellite, then the above satellite-network device delay value can be equal to 0. In this case, the air interface propagation delay value corresponding to the first component cell is equal to the terminal device-satellite delay value.

[0199] After the terminal device determines the air interface propagation delay value corresponding to the cell for carrier aggregation, the terminal device determines the target cell. It can be understood that the number of target cells can be one. In this case, the terminal device receives the wake-up signal on one target cell, and the wake-up signal received by the terminal device on the one target cell is used to control whether the terminal device is activated during the activation period within the cells for carrier aggregation. The number of target cells can also be multiple. In this case, the terminal device can receive the wake-up signal on multiple target cells, and each wake-up signal is used to control whether the terminal device is activated during the activation period within a part of the cells for carrier aggregation.

[0200] The terminal device can determine the target cell in various ways. Exemplarily, the terminal device can first determine one or more candidate cells according to the air interface propagation delay value corresponding to each cell and determine it by indicating to the network device; it can also receive the feedback information from the network device to determine after indicating one or more candidate cells to the network device; it can also be that the terminal device directly indicates the air interface propagation delay value corresponding to each cell to the network device, and then the network device determines the target cell and indicates it to the terminal device to determine.

[0201] 1102: The network device determines the target cell, which is determined by the air interface propagation delay value corresponding to the cell for carrier aggregation by the terminal device. The air interface propagation delay value corresponding to the cell for carrier aggregation is the air interface propagation delay value between the network device corresponding to the cell for carrier aggregation and the terminal device.

[0202] Similar to step 1101, the network device can determine the target cell in various ways. Exemplarily, it can be that the terminal device first determines one or more candidate cells through the air interface propagation delay value corresponding to each cell, and the network device determines it after receiving the indication from the terminal device; it can also be to determine the target cell according to the air interface propagation delay value corresponding to each cell indicated by the terminal device.

[0203] 1103: The network device sends a wake-up signal to the terminal device on the target cell. Correspondingly, the terminal device receives the wake-up signal on the target cell.

[0204] As can be understood from the descriptions of Step 1101 and Step 1102, in the embodiments of the present application, it may be that the terminal device determines the target cell earlier than the network device; or it may be that the network device determines the target cell earlier than the terminal device.

[0205] In the embodiments of the present application, the wake-up signal is used to control whether the terminal device is activated during the activation period in the carrier aggregation cell. Exemplarily, the terminal device may receive the wake-up signal before the activation period. If the wake-up signal indicates that the terminal device needs to be activated to monitor the PDCCH, then the terminal device is activated in the corresponding cell; if the wake-up signal indicates that the terminal device does not need to be activated, that is, does not need to monitor the PDCCH, then the terminal device is not activated in the corresponding cell, that is, continues to remain in the dormant state and does not monitor the PDCCH.

[0206] In some embodiments, when the network device needs the terminal device to be activated, the network device sends a wake-up signal to the terminal device. Correspondingly, the terminal device receives the wake-up signal; when the network device does not need the terminal device to be activated, the network device may determine not to send a wake-up signal to the terminal device. Correspondingly, the terminal device determines not to receive the wake-up signal.

[0207] In summary, in the embodiments of the present application, the terminal device first determines one or more target cells according to the radio interface propagation delay values corresponding to the cells, and then receives the wake-up signal sent by the network device on the one or more target cells, which can effectively control the activation period on the cell indicated by the wake-up signal after the terminal device receives the wake-up signal, that is, the wake-up signal received by the terminal device can effectively adapt to the DRX mechanism, thereby achieving the purpose of energy saving.

[0208] To better understand this solution, the method proposed in the present application will be explained in different cases below. First, in a first aspect, the target cell can be determined by the terminal device first by determining candidate cells according to the radio interface propagation delay values corresponding to each cell and indicating them to the network device, and then determined through the feedback of the network device. The above situation will be introduced below.

[0209] In some implementation manners, the terminal device can directly determine the target cell according to the radio interface propagation delay values corresponding to each cell and indicate it to the network device. In some embodiments, the method includes:

[0210] The terminal device sends first indication information to the network device. The first indication information is used to indicate one or more cells, and the one or more cells include the target cell; one cell is the cell with the smallest radio interface propagation delay value corresponding to the carrier aggregation cell, and the multiple cells are the cells with relatively small radio interface propagation delay values corresponding to the carrier aggregation cell; correspondingly, the network device receives the first indication information;

[0211] The network device determines the target cell according to the first indication information, and the terminal device determines the target cell according to the first indication information.

[0212] In the embodiments of the present application, the indication information (such as the first indication information above and the second indication information in the following text) indicating the cell (such as the one or more cells, and the cells described in the following text) should be understood as indicating the identifier of the cell, such as the cell number, which will not be elaborated hereinafter. For example, the above first indication information for indicating one or more cells should be understood as the first indication information for indicating the identifiers of the one or more cells.

[0213] It can be understood that the terminal device may send the first indication information to the network device in various situations. Exemplarily, the terminal device may send the first indication information to the network device when completing the RRC connection; or, the terminal device may send the first indication information to the network device when its own location information changes; or, the terminal device may send the first indication information to the network device when receiving an indication from the network device, etc. The terminal device may send the first indication information to the network device corresponding to the primary cell, and then the network device corresponding to the primary cell may convey the first indication information to the network devices corresponding to other cells through the interaction information between network devices; or, the terminal device may send the first indication information to the network devices corresponding to each cell. In short, the network device corresponding to the terminal device can know the first indication information.

[0214] It can be understood that in the case where the terminal device indicates a cell to the network device through the first indication information, the cell may be the target cell. After receiving the first indication information, both network devices may send a wake-up signal to the terminal device on the cell, and the terminal device may receive the wake-up signal sent by the network device on the cell.

[0215] It can be understood that in the case where the terminal device indicates multiple cells to the network device through the first indication information, the network device may use the first cell indicated by the first indication information to send a wake-up signal to the terminal device, and the terminal device may use the first cell indicated by the first indication information to receive the wake-up signal sent by the network device. Exemplarily, the terminal device may indicate the multiple cells in the order of the radio interface propagation delay value, and place the cell with a smaller radio interface propagation delay value in a more forward position in the first indication information. Similarly, the cell with a smaller radio interface delay value may be placed in a more backward position in the first indication information. In this case, the network device may use the last cell indicated by the first indication information to send a wake-up signal to the terminal device, and the terminal device may use the last cell indicated by the first indication information to receive the wake-up signal sent by the network device.

[0216] In some implementations, the target cell can be determined by the terminal device first determining some candidate cells through the air interface propagation delay values corresponding to the cells and indicating them to the network device, and then determining them through the feedback of the network device. In some embodiments, after the network device receives the first indication information, the method further includes:

[0217] The network device determines the target cell according to the first indication information, where the target cell is the one cell, or the target cell is one of the multiple cells;

[0218] The network device sends second indication information to the terminal device, where the second indication information is used to confirm the first indication information; or, the network device sends second indication information to the terminal, where the second indication information is used to indicate the target cell;

[0219] Correspondingly, the terminal device receives the second indication information; the terminal device determines the target cell according to the second indication information.

[0220] In the embodiments of the present application, when the terminal device indicates a cell to the network device through the first indication information, the network device can confirm the first indication information through the second indication information. In some embodiments, the second indication information is used to confirm the first indication information, which can be understood as that after the network device receives the first indication information, it confirms to the terminal device through the second indication information that it has received the first indication information. After that, the terminal device can determine to receive the wake-up signal using the one cell as the target cell; when the network device needs to send a wake-up signal, it parses the first indication information, determines the target cell from the first indication information, and then sends the wake-up signal on the target cell.

[0221] In another embodiment, the second indication information is used to confirm the first indication information, which can be understood as that after the network device receives the first indication information, it determines the target cell from the first indication information, and then confirms to the terminal device through the second indication information that the one cell indicated in the first indication information is used as the target cell to send the wake-up signal.

[0222] It can be understood that when the terminal device indicates multiple cells to the network device through the first indication information, the network device can select one cell from the multiple cells and feedback it to the terminal device through the second indication information. In this case, the cell selected by the network device from the multiple cells can be understood as the target cell.

[0223] For ease of understanding the method in the above embodiments, please refer to Figure 12 , Figure 12It is a schematic flowchart of another method for receiving a wake-up signal provided by an embodiment of the present application. The method includes:

[0224] 1201: The terminal device sends first indication information to the network device. The first indication information is used to indicate a first cell, and the first cell is the cell with the smallest radio propagation delay value corresponding to the cells for which the terminal device performs carrier aggregation. Correspondingly, the network device receives the first indication information.

[0225] In this embodiment, the fact that the first indication information is used to indicate the first cell can be understood as a situation where the terminal device indicates a cell to the network device through the first indication information. It can be understood that in this embodiment, the first cell is the cell with the smallest radio propagation delay value corresponding to the cells for which the terminal device performs carrier aggregation. However, the embodiment of the present application does not limit the type of the first cell, that is, the first cell can be a primary cell, or it can also be a secondary cell.

[0226] 1202: The network device uses the first cell as the target cell.

[0227] After receiving the first indication information, the network device uses the first cell as the target cell.

[0228] 1203: The network device sends second indication information to the terminal device. The second indication information is used to confirm the first indication information. Correspondingly, the terminal device receives the second indication information.

[0229] It can be understood that after the network device uses the first cell as the target cell, it still needs to feed back to the terminal device, so that the terminal device can know the target cell truly determined by the network device. The fact that the second indication information is used to confirm the first indication information can be understood as the network device using the first cell as the target cell for sending the wake-up signal, or it can also be understood as the network device instructing the terminal device to receive the wake-up signal on the first cell.

[0230] 1204: The terminal device uses the first cell as the target cell.

[0231] After receiving the second indication information from the network device, the terminal device uses the first cell as the target cell

[0232] 1205: The network device sends a wake-up signal on the target cell. Correspondingly, the terminal device receives the wake-up signal on the target cell.

[0233] It can be understood that in this embodiment, the wake-up signal transmitted and received on the target cell is used to control the activation periods of all the cells for carrier aggregation of the terminal device. That is, the terminal device determines whether to start the corresponding on-duration timer on each cell by the wake-up signal received on the first target cell.

[0234] Through the above method, in the carrier aggregation scenario, after the terminal device receives the wake-up signal sent by the network device, it can effectively control the activation period of the corresponding cell according to the indication of the wake-up signal; it can avoid the problem that the wake-up signal reception is delayed, resulting in ineffective cell wake-up.

[0235] For ease of understanding Figure 12 the corresponding embodiment, please refer to Figure 13 , Figure 13 is a schematic diagram of a terminal device receiving a wake-up signal on the cell with the smallest corresponding radio interface propagation delay value provided by an embodiment of the present application.

[0236] As Figure 13 shown, WUS represents the wake-up signal, and the remaining white and black rectangles can be understood as an onduration. The number of cells for carrier aggregation of the terminal device is 3, including the primary cell, secondary cell A, and secondary cell B. As Figure 13 shown, 4 ondurations are respectively exemplarily shown for the network device and each cell for carrier aggregation of the terminal device. It can be seen from Figure 13 that for the primary cell, secondary cell A, and secondary cell B of the terminal device, the radio interface propagation delay value corresponding to secondary cell A is the smallest.

[0237] Exemplarily, the terminal device can indicate to the network device to configure the wake-up signal listening opportunity on secondary cell A by means of auxiliary information reporting. The network device determines the wake-up signal listening opportunity to be configured on secondary cell A according to the auxiliary information reported by the terminal device and confirms it to the terminal device. Thus, the network device configures the listening opportunity of the wake-up signal on secondary cell A and sends the wake-up signal to the terminal device. Correspondingly, the terminal device receives the wake-up signal sent by the network device on secondary cell A.

[0238] The terminal device can determine the next activation period of the current time domain according to the radio interface propagation delay value between other cells and the cell used to receive the wake-up signal. For example, after the terminal device receives the wake-up signal on secondary cell A, it can directly determine the next activation period of the current time domain in secondary cell A, which can be understood as Figure 13The black rectangle corresponding to secondary cell A of the middle secondary cell group. The terminal device can determine the next activation period at the current time domain position in the primary cell according to the absolute value of the difference between the radio interface propagation delay value corresponding to the primary cell and the radio interface propagation delay value corresponding to secondary cell A. It can be understood that Figure 13 The black rectangle corresponding to the primary cell in the middle. Similarly, the terminal device can determine the next activation period at the current time domain position in secondary cell B according to the absolute value of the difference between the radio interface propagation delay value corresponding to secondary cell B and the radio interface propagation delay value corresponding to secondary cell A. It can be understood that Figure 13 The black rectangle corresponding to secondary cell B of the middle secondary cell group.

[0239] After the terminal device receives a wake-up signal on secondary cell A (i.e., the cell configured with the wake-up signal listening opportunity), the terminal device can determine whether to wake up at the next activation period at the current time domain position according to the indication of the wake-up signal (it can be understood that Figure 13 The black rectangle in the middle), and it can also be understood as whether to start the on-duration timer.

[0240] Through the above method, in the carrier aggregation scenario, after the terminal device receives the wake-up signal sent by the network device, it can effectively control the corresponding activation period according to the indication of the wake-up signal; it can avoid the problem that the wake-up signal reception is delayed, resulting in ineffective cell wake-up.

[0241] In some other implementation manners, the terminal device can also indicate multiple cells to the network device through the first indication information, and then the network device selects according to the multiple cells. Exemplarily, this implementation manner may include the following steps:

[0242] The terminal device sends the first indication information to the network device. The first indication information is used to indicate multiple cells, and the multiple cells are the cells with relatively small radio interface propagation delay values among the cells for which the terminal device performs carrier aggregation; correspondingly, the network device receives the first indication information;

[0243] The network device determines a target cell according to the first indication information, and the target cell is one of the multiple cells;

[0244] The network device sends the second indication information to the terminal device. The second indication information is used to indicate the target cell; correspondingly, the terminal device receives the second indication information;

[0245] The network device sends a wake-up signal on the target cell. Correspondingly, the terminal device receives the wake-up signal on the target cell.

[0246] In this embodiment, the terminal device indicates multiple cells to the network device through the first indication information, and the multiple cells are cells with relatively small air interface propagation delay values among the cells for which the terminal device performs carrier aggregation. Exemplarily, the terminal device may determine a reference threshold, and the cells with air interface delay values less than the reference threshold may be used as the multiple cells. For example, the reference threshold may be set to 8 ms, 10 ms, etc. according to the actual situation. Additionally, the terminal device may sort the cells for which it performs carrier aggregation according to the corresponding air interface delay values. If sorted from small to large, a portion of the cells ranked at the front may be used as the multiple cells; if sorted from large to small, a portion of the cells ranked at the back may be used as the multiple cells.

[0247] Then, the network device selects a target cell (which can be understood as the target cell) from the multiple cells according to the first indication information, and feeds back to the terminal device through the second indication information. It can be understood that although the terminal device indicates multiple cells to the network device, the network device may select a cell for the transmission of the wake-up signal according to its own resource configuration.

[0248] In some other embodiments, the first indication information is further used to indicate the air interface propagation delay value corresponding to each cell in the multiple cells; the target cell is the cell with the smallest air interface propagation delay value among the multiple cells.

[0249] In this embodiment, when the terminal device indicates the multiple cells through the first indication information, it also indicates the air interface propagation delay value corresponding to each cell in the multiple cells, so that the network device can select the cell with the smallest air interface propagation delay value among the multiple cells as the target cell according to the air interface propagation delay value corresponding to each cell. Through the above method, after receiving the wake-up signal sent by the network device, the terminal device can effectively control the corresponding active period according to the indication of the wake-up signal; further avoiding the problem that the wake-up signal reception is delayed, resulting in ineffective cell wake-up.

[0250] It can be understood that in the above embodiments, the network device sends a wake-up signal to the terminal device on one cell. After receiving the wake-up signal, the terminal device is used to control whether to start the on-duration timer associated with the wake-up signal on all cells. In some implementation manners, the terminal device may receive wake-up signals on multiple cells respectively, and each wake-up signal is used to control whether to start the on-duration timer associated with the wake-up signal on a part of the cells.

[0251] Exemplarily, the terminal device may first group the cells according to the radio propagation delay values corresponding to the cells. In each cell group, one cell is assigned to receive the wake-up signal and is indicated to the network device. In some embodiments, before the terminal device determines the target cell, the method further includes:

[0252] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the cell for receiving the wake-up signal in each of the M cell groups; where the M cell groups are obtained by grouping the cells in the carrier aggregation, and the absolute value of the difference between the radio propagation delay values corresponding to any two cells in each of the M cell groups is less than or equal to a first threshold; the first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1;

[0253] The network device determines the target cell according to the first indication information; correspondingly, the terminal device determines the target cell according to the first indication information.

[0254] In this embodiment, the terminal device may first group the cells according to the radio propagation delay values corresponding to the cells to obtain the M cell groups, and then indicate the cell for receiving the wake-up signal in each group to the network device through the first indication information. In this case, the terminal device receives the wake-up signal on the cell for receiving the wake-up signal in each of the M cell groups, and the network device sends the wake-up signal on the cell for receiving the wake-up signal in each of the M cell groups.

[0255] It can be understood that for the above M cell groups, when M is greater than or equal to 2, it can be understood that the terminal device groups all the cells into at least two groups; when M is equal to 1, it can be understood that the terminal device selects a part of the cells from all the cells as a cell group.

[0256] In some embodiments, the cell for receiving the wake-up signal is the cell with the smallest radio propagation delay value corresponding to the cell group where the cell for receiving the wake-up signal is located. In the above case, the terminal device uses the cell with the smallest radio propagation delay value in the cell group as the cell for receiving the wake-up signal in the cell group and indicates it to the network device through the first indication information. Therefore, after the terminal device receives the wake-up signal sent by the network device, it can effectively control the corresponding activation period according to the indication of the wake-up signal; it can avoid the problem that the wake-up signal reception is delayed and the cell wake-up cannot be effectively performed.

[0257] It can be understood that when the network device knows the corresponding relationship between each cell for receiving the wake-up signal and other cells in the group, the network device can control whether the terminal device is activated on each cell in the group through each cell for receiving the wake-up signal. When the network device does not know the corresponding relationship between each cell for receiving the wake-up signal and other cells in the group, in some embodiments, the first indication information is further used to indicate other cells in each cell group, so that the network device can effectively control whether the terminal device is activated on each cell in the group through the wake-up signal.

[0258] Exemplarily, it may also be that the terminal device sends the first indication information to the network device, and then the network device directly determines the target cell according to the first indication information and feeds back the target cell to the terminal device for determination. In some embodiments, please refer to Figure 14 , Figure 14 which is a schematic flowchart of another method for receiving a wake-up signal provided by an embodiment of the present application. As Figure 14 shown, the method includes:

[0259] 1401: The terminal device sends the first indication information to the network device. The first indication information is used to indicate the cell for receiving the wake-up signal in each of the M cell groups, and other cells in each of the cell groups; wherein, the M cell groups are obtained by grouping the cells for which the terminal device performs carrier aggregation, and the absolute value of the difference between the radio propagation delay values corresponding to any two cells in each of the M cell groups is less than or equal to a first threshold; the M is a number greater than or equal to 1. Correspondingly, the network device receives the first indication information.

[0260] Combined with the description of step 1101 above, it can be understood that there are often multiple cells for which the terminal device performs carrier aggregation. The terminal device can group the cells for which the terminal device performs carrier aggregation to obtain the M cell groups, and the M is a number greater than or equal to 1.

[0261] Exemplarily, the terminal device can divide some cells with smaller radio propagation delay values into one cell group according to the radio propagation delay value corresponding to each cell. It can also be understood that the absolute value of the difference between the radio propagation delay values corresponding to any two cells in each group is less than or equal to the first threshold.

[0262] For example, the terminal device may divide the cells whose absolute value of the difference between the air interface propagation delay values is less than or equal to the first threshold into a cell group according to the first threshold. It can be understood that, in some embodiments, the first threshold may be determined by the terminal device. In other embodiments, the first threshold may be indicated by the network device. Exemplarily, the network device may configure the first threshold to the terminal device through system information, or RRC signaling, or MAC CE. It can be understood that the first threshold may be determined according to the actual network resource situation. Exemplarily, the first threshold may be 3 ms, or 5 ms, 6 ms, etc., and the present application does not limit this.

[0263] It can be understood that for any cell group (which may be referred to as the first sub-cell group) among the M cell groups, the terminal device may select the cell in the first sub-cell group for receiving the wake-up signal. It can be understood that the number of cells in the first sub-cell group for receiving the wake-up signal may be one or more. Exemplarily, the terminal device may use the cell with a smaller air interface propagation delay value in the first sub-cell group as the cell for receiving the wake-up signal; or use the cell with the smallest air interface propagation delay value in the first sub-cell as the cell for receiving the wake-up signal; or use the cell with a smaller air interface propagation delay value and better signal quality in the first sub-cell group as the cell for receiving the wake-up signal.

[0264] Then the terminal device may indicate the cell grouping result to the network device through the first indication information, which can be understood as indicating the cell members of each group and the cells in each group for receiving the wake-up signal.

[0265] 1402: The network device determines a target cell, which is determined according to the cells for receiving the wake-up signal in at least one cell group among the M cell groups.

[0266] The wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the first cell group. The first cell group includes the target cell, and the first cell group is included in the at least one cell group.

[0267] After the network device receives the first indication information, the network device can know the cell grouping situation of the terminal device and the cells in each cell group selected by the terminal device for receiving the wake-up signal. Therefore, the network device may determine the target cell according to its own resource allocation situation and according to the cells for receiving the wake-up signal in at least one cell group among the M cell groups. It can be understood that the network device uses the first indication information sent by the terminal device as a reference to determine the cell actually used for the two-way transmission of the wake-up signal, that is, the target cell.

[0268] Exemplarily, in a possible implementation, the network device can directly accept the indication of the terminal device, that is, use the cell for receiving the wake-up signal in each group indicated by the terminal device as the cell actually used for the two-way transmission of the wake-up signal. Or, the network device can also accept some of the cells indicated by the first indication information, that is, use the cell for receiving the wake-up signal in a part of the cell groups indicated by the terminal device as the cell actually used for the two-way transmission of the wake-up signal. Or, the network device can re-determine the cell for receiving and transmitting the wake-up signal on some cell groups.

[0269] For example, when the number of cells for receiving the wake-up signal in each cell group indicated by the first indication information is one, the network device can directly confirm the first indication information, and then the terminal device and the network device receive and transmit the wake-up signal according to the cell indicated by the first indication information.

[0270] For another example, the network device may not be able to send the wake-up signal on some cells due to reasons such as tight resource allocation. Therefore, the network device can confirm a part of the first indication information, that is, use the cell for receiving the wake-up signal in each cell group of at least one cell group as the target cell. Exemplarily, the first indication information indicates 5 cell groups: cell group A, cell group B, cell group C, cell group D, and cell group E. Among them, the cells for receiving the wake-up signal in each cell group are cell A, cell B, cell C, cell D, and cell E respectively. Since the network device is inconvenient to send the wake-up signal on cell A and cell B, the network device can determine cell C, cell D, and cell E as the target cells, that is, the target cell for receiving the wake-up signal in cell group C is cell C, the target cell for receiving the wake-up signal in cell group D is cell D, and the target cell for receiving the wake-up signal in cell group E is cell E. In some embodiments, the unconfirmed cells A and B can be determined not to receive the wake-up signal.

[0271] For yet another example, the network device can re-select the cell for receiving the wake-up signal in each cell group. Exemplarily, when the number of cells for receiving the wake-up signal in each cell group indicated by the first indication information is multiple, the network device can select from the multiple cells indicated by the terminal device in each cell group and then use it as the target cell. For example, the network device can select a relatively idle cell as the cell for receiving the wake-up signal in each cell group.

[0272] 1403: The network device sends second indication information to the terminal device, and the second indication information is used to indicate the target cell. Correspondingly, the terminal device receives the second indication information.

[0273] After the network device determines the target cell, it feeds back to the terminal device through the second indication information. It can be understood that after the terminal device receives the second indication information, it can determine the target cell according to the second indication information.

[0274] 1404: The network device sends a wake-up signal on the target cell. Correspondingly, the terminal device receives the wake-up signal on the target cell.

[0275] It can be understood that since one target cell is used in each cell group to receive the wake-up signal, that is, the terminal device receives the wake-up signal on the one or more target cells, each wake-up signal received by the terminal device is used to control each cell within the group. That is to say, the wake-up signal received by the terminal device on the target cell used to receive the wake-up signal in the first cell group is used to control whether the terminal device is activated during the activation period on any cell in the first cell group, and the first cell group is any one of the at least one cell group.

[0276] In summary, in this embodiment, when the network device evaluates resources to determine whether the terminal device needs to be activated in the next activation period, since each wake-up signal is used to control each cell within the group, and the absolute value of the difference between the air interface propagation delay values corresponding to every two cells within the group is less than or equal to the first threshold, it can make the resource evaluation of the network device more accurate. Since the terminal device can receive multiple wake-up signals, and each wake-up signal is used to control each cell within the group, it can enable the terminal device to effectively control whether more cells are activated during the corresponding activation period after receiving the wake-up signal.

[0277] In some embodiments, the target cell used to receive the wake-up signal in the first cell group is the cell with the smallest air interface propagation delay value corresponding to the first cell group.

[0278] Through the above method, in the carrier aggregation scenario, after the terminal device receives the wake-up signal sent by the network device, it can effectively control the corresponding activation period according to the indication of the wake-up signal; it can avoid the problem that the wake-up signal reception is delayed, resulting in the inability to effectively wake up the cell.

[0279] For ease of understanding Figure 14 the corresponding embodiments, please refer to Figure 15 , Figure 15 which is a schematic diagram of a terminal device receiving wake-up signals on multiple cells provided by an embodiment of the present application.

[0280] Such as Figure 15As shown, WUS represents the wake-up signal, and the remaining white, black, and gray rectangles can be understood as an on duration. Exemplarily, the number of cells for carrier aggregation by the terminal device is 4, including the primary cell, secondary cell A, secondary cell B, and secondary cell C. Among them, 4 on durations are respectively exemplarily shown for each cell of the network device and the terminal device for carrier aggregation.

[0281] Exemplarily, assume that the radio propagation delay value corresponding to the primary cell is 10 ms, the radio propagation delay value corresponding to secondary cell A is 8 ms, the radio propagation delay value corresponding to secondary cell B is 16 ms, and the radio propagation delay value corresponding to secondary cell C is 15 ms. Assume that the first threshold is 3 ms. Then, the terminal device can divide the primary cell and secondary cell A into a cell group, denoted as group A; and can divide secondary cell B and secondary cell C into a cell group, denoted as group B.

[0282] In addition, in group A, the radio propagation delay value corresponding to secondary cell A is the smallest, and the terminal device can use secondary cell A as the cell in group A for receiving the wake-up signal. In group B, the radio propagation delay value corresponding to secondary cell C is the smallest, and the terminal device can use secondary cell C as the cell in group B for receiving the wake-up signal.

[0283] Then, the terminal device can indicate the grouping situation and the cells in each group for receiving the wake-up signal (i.e., secondary cell A and secondary cell C) to the network device by means of reporting auxiliary information. The network device determines the wake-up signal listening opportunity configured on secondary cell A and secondary cell C according to the auxiliary information reported by the terminal device and confirms it to the terminal device. Thus, the network device configures the wake-up signal listening opportunity on secondary cell A and secondary cell C, sends the wake-up signal to the terminal device. Correspondingly, the terminal device receives the wake-up signal sent by the network device on secondary cell A and secondary cell C.

[0284] In the above case, the wake-up signal received by the terminal device is used to control each cell within the group. Exemplarily, as Figure 15 shown, the signal received by the terminal device on secondary cell A is used to control the next activation period at the current time domain position in the primary cell and secondary cell A, as Figure 15 the black rectangle in; the signal received by the terminal device on secondary cell C is used to control the next activation period at the current time domain position in secondary cell B and secondary cell C, as Figure 15 the gray rectangle in. Similarly, as Figure 13 described in the relevant content of, the terminal device can determine the next activation period at the current time domain position according to the radio propagation delay value between other cells and the cell for receiving the wake-up signal, which will not be elaborated here.

[0285] In a second aspect, it can be understood that in some implementation manners, the terminal device may indicate to the network device the air interface propagation delay value corresponding to each cell. The network device determines the cell for receiving the wake-up signal according to the air interface propagation delay value corresponding to each cell, and feeds back to the terminal device. The above method will be introduced below.

[0286] In some embodiments, the network device may determine a cell for transmitting and receiving the wake-up signal according to the air interface propagation delay value indicated by the terminal device, and feed back to the terminal device. Exemplarily, the above manner includes the following steps:

[0287] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the air interface propagation delay value corresponding to each cell for which the terminal device performs carrier aggregation; correspondingly, the network device receives the first indication information;

[0288] The network device determines a target cell, where the target cell is the cell with the smallest air interface propagation delay value among the cells for which the terminal device performs carrier aggregation;

[0289] The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell; correspondingly, the terminal device receives the second indication information;

[0290] The network device sends the wake-up signal on the target cell; correspondingly, the terminal device receives the wake-up signal on the target cell.

[0291] It can be understood that this embodiment is similar to the method Figure 12 shown in the foregoing text. Reference may be made to the description of the corresponding embodiment in the foregoing text 12, and details are not described herein again.

[0292] In some other embodiments, the network device may group each cell according to the air interface propagation delay value indicated by the terminal device, then determine a cell for transmitting and receiving the wake-up signal for each group, and feed back to the terminal device. Exemplarily, the above manner includes the following steps:

[0293] The terminal device sends first indication information to the network device, where the first indication information is used to indicate the air interface propagation delay value corresponding to each cell for which the terminal device performs carrier aggregation; correspondingly, the network device receives the first indication information;

[0294] The network device determines a target cell, where the target cell is the cell for receiving the wake-up signal in each of the N cell groups; where the N cell groups are obtained by grouping the cells for which the terminal device performs carrier aggregation, and the absolute value of the difference between the air interface propagation delay values of any two cells in each of the N cell groups is less than or equal to a second threshold; the N is a number greater than or equal to 1;

[0295] The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell and other cells in each cell group; correspondingly, the terminal device receives the second indication information.

[0296] The network device sends a wake-up signal on the target cell; correspondingly, the terminal device receives the wake-up signal on the target cell.

[0297] It can be understood that for the above N cell groups, when N is greater than or equal to 2, it can be understood that the network device groups all cells into at least two groups; when N is equal to 1, it can be understood that the network device selects a part of cells from all cells as a cell group.

[0298] In this embodiment, the second threshold is determined by the network device. It can be understood that the second threshold can be determined according to the actual network resource situation. Exemplarily, the second threshold can be 3 ms, or 5 ms, 6 ms, etc., and this application does not limit this.

[0299] In this embodiment, the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the second cell group. The second cell group includes the target cell, and the second cell group is included in the N cell groups.

[0300] In some embodiments, the target cell is the cell with the smallest radio propagation delay value in the cell group where the target cell is located.

[0301] It can be understood that this embodiment is similar to the method Figure 14 shown above, and reference can be made to the description of the corresponding embodiment in the previous 14, which will not be elaborated here.

[0302] It can be understood that in the above embodiments, the cell indicated by the terminal device to the network device and the cell where the terminal device actually receives the wake-up signal can be any cell for carrier aggregation, that is, it can be the primary cell or the secondary cell. In some implementation manners, the terminal device can indicate some secondary cells associated with the wake-up signal transmitted and received on the primary cell to the network device, and let the wake-up signal received by the terminal device on the primary cell control the activation period on the primary cell and the associated secondary cells.

[0303] Exemplarily, please refer to Figure 16 , Figure 16 which is a schematic flowchart of another method for receiving a wake-up signal provided by an embodiment of this application. As Figure 16 shown, the method includes:

[0304] 1601: The terminal device determines a target secondary cell; the target secondary cell is determined by the radio propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation, and the radio propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is the radio propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device.

[0305] As described in step 1101 above, the terminal device can determine the radio propagation delay value corresponding to each cell for which carrier aggregation is performed. It can be understood that after the terminal device determines the radio propagation delay value corresponding to the cell for which carrier aggregation is performed, the terminal device can determine one or more target secondary cells associated with the wake-up signal received on the primary cell according to the radio propagation delay value corresponding to each cell.

[0306] Exemplarily, the target secondary cell can be determined by the terminal device first determining some candidate secondary cells through the radio propagation delay value corresponding to each cell and then indicating them to the network device; or the terminal device first determines some candidate secondary cells through the radio propagation delay value corresponding to each cell, indicates them to the network device, and then determines them through the feedback of the network device; or the terminal device directly indicates the radio propagation delay value corresponding to each cell to the network device, and then the network device determines the one or more target secondary cells and indicates them to the terminal device.

[0307] In this embodiment, it can be understood that according to different situations, the number of the target secondary cells can be one or multiple; or the target secondary cell can also be some of the secondary cells in the cells for which carrier aggregation is performed, or all of the secondary cells.

[0308] 1602: The network device determines a target secondary cell; the target secondary cell is determined by the radio propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation, and the radio propagation delay value corresponding to the cell for which the terminal device performs carrier aggregation is the radio propagation delay value between the network device corresponding to the cell for which the terminal device performs carrier aggregation and the terminal device.

[0309] Similar to step 1601, for the network device to determine the target secondary cell, it can be that the terminal device first determines some candidate secondary cells through the radio propagation delay value corresponding to each cell and then indicates them to the network device for determination; or the terminal device directly indicates the radio propagation delay value corresponding to each cell to the network device, and then the network device itself determines the one or more target secondary cells. The subsequent embodiments will describe it in detail.

[0310] 1603: The network device sends a wake-up signal on the primary cell. Correspondingly, the terminal device receives the wake-up signal on the primary cell.

[0311] As can be understood from the descriptions of step 1601 and step 1602, in the embodiments of the present application, it may be that the terminal device determines the target secondary cell earlier than the network device; or it may be that the network device determines the target secondary cell earlier than the terminal device.

[0312] In this embodiment, the wake-up signal received by the terminal device on the primary cell is used to control whether the terminal device is activated during the activation period in the target secondary cell and the primary cell, that is, the terminal device determines whether to start the on-duration timers corresponding to the primary cell and the target secondary cell by the wake-up signal received on the primary cell.

[0313] In summary, in this embodiment, the terminal device receives a wake-up signal on the primary cell, and the wake-up signal is used to control the primary cell and the target secondary cell. Since the target secondary cell is determined by the radio interface propagation delay value corresponding to each cell, the terminal device can effectively control the activation period on the cell indicated by the wake-up signal after receiving the wake-up signal, that is, the wake-up signal received by the terminal device can effectively adapt to the DRX mechanism, so as to achieve the purpose of energy saving.

[0314] In some embodiments, the target secondary cell may be determined by the terminal device first determining some candidate secondary cells through the radio interface propagation delay value corresponding to each cell and indicating them to the network device. In this case, the method includes:

[0315] The terminal device sends first indication information to the network device, and the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell; correspondingly, the network device receives the first indication information;

[0316] The terminal device determines the target secondary cell according to the first indication information;

[0317] The network device determines the target secondary cell according to the first indication information;

[0318] The network device sends a wake-up signal on the target secondary cell; correspondingly, the terminal device receives the wake-up signal on the target secondary cell.

[0319] In this embodiment, the terminal device can determine one or more secondary cells according to the radio interface propagation delay value corresponding to the cell. After the terminal device indicates the one or more secondary cells to the network device through the first indication information, both parties can directly use the one or more secondary cells as the target secondary cell.

[0320] When the terminal device uses the first indication information to indicate multiple secondary cells to the network device, the two parties can determine the target secondary cell in a variety of ways. For example, when the number of the multiple secondary cells is less than or equal to a threshold (such as 4 or 5), the two parties can directly use the multiple secondary cells as the target secondary cells; for another example, when the number of the multiple secondary cells is greater than the threshold, the two parties can select a part of the cells, and the number of the part of the cells is equal to the threshold; exemplarily, the selection can be made from the front or back positions according to the order of each cell in the first indication information.

[0321] In some implementation manners, the target secondary cell may be that the terminal device first determines some candidate secondary cells through the air interface propagation delay values corresponding to each cell, and indicates them to the network device, and then determines them through the feedback of the network device. Exemplarily, please refer to Figure 17 , Figure 17 is a schematic flowchart of another method for receiving a wake-up signal provided by an embodiment of the present application. The method includes:

[0322] 1701: The terminal device sends first indication information to the network device. The first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell; correspondingly, the network device receives the first indication information.

[0323] It can be understood that in this embodiment, the time, manner, etc. for the terminal device to send the first indication information to the network device are similar to those of the previous first indication information, and reference can be made to the description in step 1201 above. In addition, the relevant descriptions of carrier aggregation for the terminal device, the determination of the air interface propagation delay value corresponding to the cell, etc. can be referred to the description in step 1101 above, and will not be elaborated here.

[0324] 1702: The network device determines the target secondary cell according to the one or more secondary cells.

[0325] 1703: The network device sends second indication information to the terminal device. The second indication information is used to confirm the first indication information; or, the network device sends second indication information to the terminal device. The second indication information is used to indicate the target secondary cell; correspondingly, the terminal device receives the second indication information.

[0326] It can be understood that the terminal device can determine one or more secondary cells according to the air interface propagation delay values corresponding to the cells. After the terminal device uses the first indication information to indicate the one or more secondary cells to the network device, the network device can use the one or more secondary cells as the target secondary cell; in this case, the network device can confirm the first indication information through the second indication information.

[0327] The second indication information is used to confirm the first indication information. It can be understood that the network device regards the one or more secondary cells as the secondary cells related to the wake-up signal, or it can be understood that the network device instructs the terminal device that the wake-up signal is associated with the one or more secondary cells.

[0328] In the case where the terminal device indicates multiple secondary cells to the network device through the first indication information, the network device can select one of the secondary cells. For example, if the resource allocation on some secondary cells is tight for the network device, then the network device can select a secondary cell with sufficient resource allocation as the target secondary cell from the multiple secondary cells, and then indicate the target secondary cell to the terminal device through the second indication information.

[0329] 1704: The terminal device determines the target secondary cell according to the second indication information.

[0330] After receiving the second indication information of the network device, in the case where the second indication information is used to confirm the first indication information, the terminal device regards one or more secondary cells as the target secondary cell.

[0331] In the case where the second indication information is used to indicate a secondary cell, the terminal device regards the secondary cell indicated by the second indication information as the target secondary cell.

[0332] 1705: The network device sends a wake-up signal on the primary cell. Correspondingly, the terminal device receives the wake-up signal on the primary cell.

[0333] In summary, in this embodiment, the terminal device receives a wake-up signal on the primary cell. The wake-up signal is used to control the primary cell and the target secondary cell. And since the target secondary cell is determined by the air interface propagation delay value corresponding to each cell, it can enable the terminal device to effectively control the active period on the cell indicated by the wake-up signal after receiving the wake-up signal, that is, it can enable the wake-up signal received by the terminal device to effectively adapt to the DRX mechanism, thereby achieving the purpose of energy saving.

[0334] In some implementation manners, the terminal device can directly indicate the air interface propagation delay value corresponding to each cell to the network device, and then the network device determines the target secondary cell and indicates it to the terminal device to determine the target secondary cell. Exemplarily, this implementation manner includes the following steps:

[0335] The terminal device sends first indication information to the network device. The first indication information is used to indicate the air interface propagation delay value corresponding to each cell for which the terminal device performs carrier aggregation; correspondingly, the network device receives the first indication information.

[0336] The network device determines the target secondary cell.

[0337] The network device sends second indication information to the terminal device, and the second indication information is used to indicate the target secondary cell; correspondingly, the terminal device receives the second indication information;

[0338] The network device sends a wake-up signal on the primary cell, and correspondingly, the terminal device receives the wake-up signal on the primary cell.

[0339] Optionally, the radio propagation delay value corresponding to each secondary cell in the one or more secondary cells is greater than or equal to the radio propagation delay value corresponding to the primary cell. In the above case, it can be ensured that the wake-up signal received by the terminal device on the primary cell can control the associated secondary cells, that is, the problem that the wake-up signal reception is severely delayed and the correct cell wake-up cannot be performed can be avoided.

[0340] In some embodiments, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

[0341] It can be understood that in Figure 17 the corresponding embodiment, the third threshold can be determined by the terminal device, and the third threshold can be indicated by the network device; in the case where the terminal device directly indicates the radio propagation delay value corresponding to each cell to the network device and then the network device determines the target secondary cell, the third threshold is determined by the network device.

[0342] Exemplarily, the network device can configure the third threshold to the terminal device through system information, or RRC signaling, or MAC CE. It can be understood that the third threshold can be determined according to the actual network resource situation. Exemplarily, the third threshold can be 3 ms, or 5 ms, 6 ms, etc., and this application does not make any limitation thereto.

[0343] In the above case, when the network device evaluates resources to determine whether the terminal device needs to be activated in the next activation period, since the absolute value of the difference between the radio propagation delay value corresponding to each secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to the third threshold, the evaluation duration required by the network device can be shortened, so that the resource evaluation of the network device is more accurate.

[0344] In other embodiments, the radio propagation delay value corresponding to each secondary cell in the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell. In the above case, it can be ensured that the wake-up signal received by the terminal device on the primary cell can control the associated secondary cells, that is, the problem that the wake-up signal reception is severely delayed and the correct cell wake-up cannot be performed can be avoided.

[0345] In some other embodiments, the absolute value of the difference between the radio propagation delay value corresponding to each secondary cell in the one or more secondary cells and the radio propagation delay value corresponding to the primary cell is less than or equal to the third threshold, and the radio propagation delay value corresponding to each secondary cell in the one or more secondary cells is greater than or equal to the radio propagation delay value corresponding to the primary cell. In the above cases, it can not only make the resource evaluation of the network device more accurate, but also avoid the problem that the wake-up signal reception delay is serious, resulting in incorrect cell wake-up.

[0346] For ease of understanding the above embodiments, please refer to Figure 18 , Figure 18 FIG. is a schematic diagram of a terminal device receiving a wake-up signal on a primary cell and using the wake-up signal to control the primary cell and a target secondary cell provided by an embodiment of the present application.

[0347] As Figure 18 shown, WUS represents the wake-up signal, and the remaining white and black rectangles can be understood as an onduration. Exemplarily, the number of cells for which the terminal device performs carrier aggregation is 4, including a primary cell, secondary cell A, secondary cell B, and secondary cell C. Among them, 4 on durations are respectively shown exemplarily for each cell of the network device and the terminal device performing carrier aggregation.

[0348] Exemplarily, assume that the radio propagation delay value corresponding to the primary cell is 12 ms, the radio propagation delay value corresponding to secondary cell A is 8 ms, the radio propagation delay value corresponding to secondary cell B is 18 ms, and the radio propagation delay value corresponding to secondary cell C is 15 ms. Assume that the third threshold is 5 ms. The terminal device can select a secondary cell whose radio propagation delay value is greater than that of the primary cell and the absolute value of the difference between the radio propagation delay value corresponding to the secondary cell and the radio propagation delay value corresponding to the primary cell is less than 5 ms to be associated with the wake-up signal on the primary cell. That is, the terminal device can associate secondary cell B and secondary cell C with the wake-up signal sent on the primary cell.

[0349] After the terminal device determines the secondary cells associated with the wake-up signal sent by the primary cell, it can indicate the secondary cells associated with the wake-up signal sent by the primary cell to the network device through the auxiliary information reporting method, and the network device determines the secondary cells associated with the wake-up signal sent by the primary cell according to the auxiliary information reported by the terminal device.

[0350] After the terminal device receives the wake-up signal on the primary cell, it can determine whether it needs to wake up on the cell associated with the wake-up signal according to the indication of the wake-up signal. As Figure 18 shown, the primary cell is associated with secondary cell B and secondary cell C. After the terminal device receives the wake-up signal on the primary cell, the wake-up signal is used to control the next activation period at the current time domain position in the primary cell, secondary cell B, and secondary cell C. As Figure 18The black rectangle. Similarly, as described in Figure 13 , the terminal device can determine the next activation period of the current time domain position according to the radio interface propagation delay value between other cells and the cell used to receive the wake-up signal, which will not be elaborated here.

[0351] Through the above embodiments, in the carrier aggregation scenario, the network device can configure the wake-up signal listening opportunity on a suitable cell, and the terminal device can effectively control the activation period of the corresponding cell after receiving the wake-up signal, which can avoid the problem that the wake-up signal reception delay is serious and the correct cell wake-up cannot be performed.

[0352] The method of the embodiment of the present application is elaborated in detail above. Next, the device provided by the embodiment of the present application is elaborated.

[0353] Exemplarily, please refer to Figure 19 , Figure 19 which is a schematic structural diagram of a terminal device provided by an embodiment of the present application. As shown in Figure 19 , the terminal device 190 includes a processing unit 1901 and a communication unit 1902. Among them, the processing unit 1901 is used for data processing. The communication unit 1902 may be integrated with a receiving unit and a sending unit. In some embodiments, the communication unit 1902 may also be referred to as a transceiver unit. Alternatively, the communication unit 1902 may also be split into a receiving unit and a sending unit. The same applies to the processing unit 1901 and the communication unit 1902 below, which will not be elaborated further below.

[0354] In the first implementation manner, the description of each unit is as follows:

[0355] The processing unit 1901 is used to determine a target cell, and the target cell is determined according to the radio interface propagation delay value corresponding to the cell where the terminal device performs carrier aggregation. The radio interface propagation delay value corresponding to the cell where the terminal device performs carrier aggregation is the radio interface propagation delay value between the network device corresponding to the cell where the terminal device performs carrier aggregation and the terminal device;

[0356] The communication unit 1902 is used to receive a wake-up signal on the target cell, and the wake-up signal is used to control whether the terminal device is activated during the activation period in the cell where the terminal device performs carrier aggregation.

[0357] In a possible implementation manner, the communication unit 1902 is further used to send first indication information to the network device, and the first indication information is used to indicate one or more cells, and the one or more cells include the target cell; one cell is the cell with the smallest radio interface propagation delay value corresponding to the cells where the terminal device performs carrier aggregation, and the multiple cells are the cells with relatively small radio interface propagation delay values corresponding to the cells where the terminal device performs carrier aggregation.

[0358] In a possible implementation, the communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to confirm the first indication information; or,

[0359] The communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is one of the multiple cells.

[0360] In a possible implementation, the first indication information is further used to indicate the radio interface propagation delay value corresponding to each cell in the multiple cells; the target cell is the cell with the smallest radio interface propagation delay value among the multiple cells.

[0361] In a possible implementation, the communication unit 1902 is further configured to send first indication information to the network device, where the first indication information is used to indicate the cell in each cell group of the M cell groups for receiving the wake-up signal; where the M cell groups are obtained by grouping the cells in carrier aggregation, and the absolute value of the difference between the radio interface propagation delay values of any two cells in each cell group of the M cell groups is less than or equal to a first threshold; the first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1.

[0362] In a possible implementation, the first indication information is further used to indicate the other cells in each cell group.

[0363] In a possible implementation, the communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is determined according to the cell for receiving the wake-up signal in at least one of the M cell groups; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cell of the first cell group, the first cell group includes the target cell, and the first cell group is included in the at least one cell group.

[0364] In a possible implementation, the cell for receiving the wake-up signal is the cell with the smallest radio interface propagation delay value corresponding to the cell group where the cell for receiving the wake-up signal is located.

[0365] In a possible implementation, the communication unit 1902 is further configured to send first indication information to the network device, where the first indication information is used to indicate the radio interface propagation delay value corresponding to each cell in the carrier aggregation;

[0366] The communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is the cell with the smallest radio interface propagation delay value among the cells of the carrier aggregation.

[0367] In a possible implementation manner, the communication unit 1902 is further configured to send first indication information to the network device, where the first indication information is used to indicate the radio interface propagation delay value corresponding to each cell of the carrier aggregation;

[0368] The communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is the cell for receiving a wake-up signal in each of the N cell groups; the second indication information is further used to indicate other cells in each of the cell groups; where the N cell groups are obtained by grouping the cells of the carrier aggregation, and the absolute value of the difference between the radio interface propagation delay values corresponding to any two cells in each of the N cell groups is less than or equal to a second threshold, and the second threshold is determined by the network device, and N is a number greater than or equal to 1; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the second cell group; the second cell group includes the target cell, and the second cell group is included in the N cell groups.

[0369] In a possible implementation manner, the target cell is the cell with the smallest radio interface propagation delay value in the cell group where the target cell is located.

[0370] In a possible implementation manner, the processing unit 1901 is specifically configured to determine the target cell according to the first indication information or the second indication information.

[0371] In a second implementation manner, the description of each unit is as follows:

[0372] The processing unit 1901 is configured to determine a target secondary cell; the target secondary cell is determined according to the radio interface propagation delay value of the cell to which the terminal device performs carrier aggregation, and the radio interface propagation delay value of the cell is the radio interface propagation delay value between the network device corresponding to the cell and the terminal device;

[0373] The communication unit 1902 is configured to receive a wake-up signal on the primary cell; the wake-up signal is used to control whether the terminal device is activated during the activation period in the target secondary cell and the primary cell.

[0374] In a possible implementation manner, the communication unit 1902 is further configured to send first indication information to the network device, where the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell.

[0375] In a possible implementation, the communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to confirm the first indication information; or,

[0376] The communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the target secondary cell, and the target secondary cell is determined according to the one or more secondary cells.

[0377] In a possible implementation, the processing unit 1901 is specifically configured to determine the target cell according to the first indication information or the second indication information.

[0378] In a possible implementation, the communication unit 1902 is further configured to send first indication information to the network device, where the first indication information is used to indicate the radio propagation delay value corresponding to each cell of the carrier aggregation;

[0379] The communication unit 1902 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate the target secondary cell.

[0380] In a possible implementation, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

[0381] In a possible implementation, the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0382] In a possible implementation, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to the third threshold, and the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0383] Exemplarily, please refer to Figure 20 , Figure 20 is a schematic structural diagram of a network device provided in an embodiment of the present application. As Figure 20 shown, the network device 200 includes a processing unit 2001 and a communication unit 2002. Among them, the processing unit 2001 is configured to perform data processing. The communication unit 2002 may be integrated with a receiving unit and a sending unit. In some embodiments, the communication unit 2002 may also be referred to as a transceiver unit. Alternatively, the communication unit 2002 may be split into a receiving unit and a sending unit. The same applies to the processing unit 2001 and the communication unit 2002 hereinafter, and will not be elaborated hereinafter.

[0384] In the first implementation mode, the descriptions of each unit are as follows:

[0385] A processing unit 2001, configured to determine a target cell, where the target cell is determined according to the radio propagation delay value corresponding to the cell for carrier aggregation of a terminal device, and the radio propagation delay value corresponding to the cell for carrier aggregation is the radio propagation delay value between the network device corresponding to the cell for carrier aggregation and the terminal device;

[0386] A communication unit 2002, configured to send a wake-up signal on the target cell, where the wake-up signal is used to control whether the terminal device is activated during the active period in the cell for carrier aggregation.

[0387] In a possible implementation mode, the communication unit 2002 is further configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate one or more cells, and the one or more cells include the target cell; one cell is the cell with the smallest radio propagation delay value corresponding to the cells for carrier aggregation, and the multiple cells are the cells with relatively small radio propagation delay values corresponding to the cells for carrier aggregation.

[0388] In a possible implementation mode, the target cell is one of the one cell or the multiple cells;

[0389] The communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to confirm the first indication information; or,

[0390] The communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate the target cell.

[0391] In a possible implementation mode, the first indication information is further used to indicate the radio propagation delay value corresponding to each cell in the multiple cells; the target cell is the cell with the smallest radio propagation delay value corresponding to the multiple cells.

[0392] In a possible implementation mode, the communication unit 2002 is further configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate the cell for receiving the wake-up signal in each of M cell groups; where the M cell groups are obtained by grouping the cells for carrier aggregation, and the absolute value of the difference between the radio propagation delay values corresponding to any two cells in each of the M cell groups is less than or equal to a first threshold; the first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1.

[0393] In a possible implementation mode, the first indication information is further used to indicate other cells in each cell group.

[0394] In a possible implementation, the target cell is determined according to a cell for receiving a wake-up signal in at least one of the M cell groups; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the first cell group, the first cell group includes the target cell, and the first cell group is included in the at least one cell group.

[0395] In a possible implementation, the communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate the target cell.

[0396] In a possible implementation, the cell for receiving the wake-up signal is the cell with the smallest radio interface propagation delay value in the cell group where the cell for receiving the wake-up signal is located.

[0397] In a possible implementation, the communication unit 2002 is further configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate the radio interface propagation delay value corresponding to each cell of the carrier aggregation;

[0398] The target cell is the cell with the smallest radio interface propagation delay value among the cells of the carrier aggregation;

[0399] The communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate the target cell.

[0400] In a possible implementation, the communication unit 2002 is further configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate the radio interface propagation delay value corresponding to each cell of the carrier aggregation;

[0401] The target cell is a cell for receiving a wake-up signal in each of the N cell groups, the N cell groups are obtained by grouping the cells of the carrier aggregation, the absolute value of the difference between the radio interface propagation delay values corresponding to any two cells in each of the N cell groups is less than or equal to a second threshold, the second threshold is determined by the network device, and N is a number greater than or equal to 1; the wake-up signal received on the target cell is used to control whether the terminal device is activated during the activation period in the cells of the second cell group; the second cell group includes the target cell, and the second cell group is included in the N cell groups;

[0402] The communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate the target cell and other cells in each cell group.

[0403] In a possible implementation, the target cell is the cell with the smallest radio propagation delay value in the cell group where the target cell is located.

[0404] In a possible implementation, the processing unit 2001 is specifically configured to determine the target cell according to the first indication information.

[0405] In a second implementation, the description of each unit is as follows:

[0406] The processing unit 2001 is configured to determine a target secondary cell; the target secondary cell is determined by the radio propagation delay value of the cell corresponding to the carrier aggregation of the terminal device, and the radio propagation delay value of the cell corresponding to the carrier aggregation is the radio propagation delay value between the network device corresponding to the cell of the carrier aggregation and the terminal device;

[0407] The communication unit 2002 is configured to send a wake-up signal on the primary cell; the wake-up signal is used to control whether the terminal device is activated during the activation period in the target secondary cell and the primary cell.

[0408] In a possible implementation, the communication unit 2002 is further configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell.

[0409] In a possible implementation, the target secondary cell is determined according to the plurality of secondary cells;

[0410] The communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to confirm the first indication information; or,

[0411] The communication unit 2002 is further configured to send second indication information to the terminal device, where the second indication information is used to indicate the target secondary cell.

[0412] In a possible implementation, the processing unit 2001 is specifically configured to determine the target cell according to the first indication information.

[0413] In a possible implementation, the communication unit 2002 is further configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate the radio propagation delay value of each cell corresponding to the carrier aggregation;

[0414] The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target secondary cell.

[0415] In a possible implementation, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

[0416] In a possible implementation, the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0417] In a possible implementation, the absolute value of the difference between the radio propagation delay value corresponding to the target secondary cell and the radio propagation delay value corresponding to the primary cell is less than or equal to the third threshold, and the radio propagation delay value corresponding to the target secondary cell is greater than or equal to the radio propagation delay value corresponding to the primary cell.

[0418] Please refer to Figure 21 , Figure 21 which is a schematic structural diagram of a communication device provided in an embodiment of the present application. Figure 21 The communication device 210 shown may be the above-mentioned terminal device 190 or the above-mentioned network device 200.

[0419] As Figure 21 shown, the communication device 210 includes at least one processor 2102, which is used to implement the functions of the terminal device in the method provided in the embodiment of the present application. For example, it can be a terminal device, a chip system, a chip, etc. The chip system can be composed of chips or can include chips and other devices, etc. Or, it is used to implement the functions of the network device in the method provided in the embodiment of the present application. For example, it can be a network device, a chip system, a chip, etc. The chip system can be composed of chips or can include chips and other devices, etc. The communication device 210 may further include a transceiver 2101. The transceiver 2101 is used to communicate with other devices or apparatuses through a transmission medium. The processor 2102 uses the transceiver 2101 to transmit and receive data and / or signaling, and is used to implement the method in the above-mentioned method embodiments.

[0420] Optionally, the communication device 210 may further include at least one memory 2103, which is used to store program instructions and / or data. The memory 2103 is coupled to the processor 2102. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. The processor 2102 may cooperate with the memory 2103. The processor 2102 may execute the program instructions stored in the memory 2103. At least one of the at least one memories may be included in the processor.

[0421] In the embodiment of the present application, the specific connection medium between the above-mentioned transceiver 2101, processor 2102 and memory 2103 is not limited. In the embodiment of the present applicationFigure 21 In the middle, the memory 2103, the processor 2102, and the transceiver 2101 are connected through the bus 2104. The bus is represented by a thick line in Figure 21 the middle. The connection manners between other components are only for illustrative purposes and are not limited thereto. This bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 21 only a thick line is used to represent it in the middle, but it does not mean that there is only one bus or one type of bus.

[0422] In the embodiments of the present application, the processor 2102 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0423] It can be understood that when the communication device 210 is the above-mentioned terminal device 190, the actions performed by the communication unit 1902 can be performed by the transceiver 2101, and the actions performed by the processing unit 1901 can be performed by the processor 2102. Or, when the communication device 210 is the above-mentioned network device 200, the actions performed by the communication unit 2002 can be performed by the transceiver 2101, and the actions performed by the processing unit 2001 can be performed by the processor 2102.

[0424] The embodiments of the present application further provide a chip. The chip includes: a processor and a memory. Among them, the number of processors can be one or more, and the number of memories can be one or more. The processor can execute the above method and the steps performed by the related embodiments by reading the instructions and data stored on the memory. Of course, there may be no memory in this chip.

[0425] Exemplarily, please refer to Figure 22 , Figure 22It is a schematic structural diagram of a module device provided by an embodiment of the present application. The module device 2200 can execute the relevant steps of the terminal device in the foregoing method embodiment; alternatively, the module device 2200 can execute the relevant steps of the network device in the foregoing method embodiment. The module device 2200 includes: a communication module 2201, a power module 2202, a storage module 2203, and a chip module 2204. Among them, the power module 2202 is used to provide electrical energy for the module device; the storage module 2203 is used to store data and instructions; the communication module 2201 is used for internal communication of the module device or for communication between the module device and external devices; the chip module 2204 can execute the above method and the steps executed by the related embodiments.

[0426] It can be understood that the specific description of the chip module 2204 can refer to Figures 11 to 18 the method shown, or, it can also refer to Figure 19 or Figure 20 the device shown, which will not be elaborated here.

[0427] The present application also provides a computer-readable storage medium, in which computer code is stored. When the computer code runs on a computer, the computer is enabled to execute the method of the above embodiment.

[0428] The present application also provides a computer program product, which includes computer code or a computer program. When the computer code or the computer program runs on a computer, the method in the above embodiment is enabled to be executed.

[0429] As described above, it is only the specific implementation manner 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 substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the above-mentioned claims.

Claims

1. A method for receiving a wake-up signal, It is characterized in that The method comprises: The terminal device determines a target cell, and the target cell is determined according to an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between a network device corresponding to the cell in which the carrier is aggregated and the terminal device; The terminal device receives a wake-up signal on the target cell, where the wake-up signal is used to control whether the terminal device is activated during an activation period in the cell of the carrier aggregation.

2. The method according to claim 1, It is characterized in that Before the terminal device determines the target cell, the method further includes: The terminal device sends first indication information to the network device, and the first indication information is used to indicate one or more cells, and the one or more cells include the target cell; the one cell is the cell with the smallest corresponding air interface propagation delay value among the cells aggregated by the carrier, and the multiple cells are the cells with smaller corresponding air interface propagation delay values ​​among the cells aggregated by the carrier.

3. The method according to claim 2, It is characterized in that The method further comprises: The terminal device receives second indication information sent by the network device, where the second indication information is used to confirm the first indication information; or, The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is one of the multiple cells.

4. The method according to claim 3, It is characterized in that The first indication information is further used to indicate an air interface propagation delay value corresponding to each cell in the multiple cells; the target cell is a cell with the smallest corresponding air interface propagation delay value in the multiple cells.

5. The method according to claim 1, It is characterized in that Before the terminal device determines the target cell, the method further includes: The terminal device sends first indication information to the network device, and the first indication information is used to indicate the cell in each of the M cell groups for receiving the wake-up signal; wherein the M cell groups are obtained by grouping the cells of the carrier aggregation, and the absolute value of the difference between the air interface propagation delay values ​​corresponding to any two cells in each of the M cell groups is less than or equal to a first threshold; the first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1.

6. The method according to claim 5, It is characterized in that The first indication information is also used to indicate other cells in each cell group.

7. The method according to claim 6, It is characterized in that The method further comprises: The terminal device receives second indication information sent by the network device, the second indication information is used to indicate the target cell, and the target cell is determined based on a cell for receiving a wake-up signal in at least one cell group among the M cell groups; the wake-up signal received on the target cell is used to control whether the terminal device is activated during an activation period in a cell of a first cell group, the first cell group includes the target cell, and the first cell group is included in the at least one cell group.

8. The method according to any one of claims 5 to 7, It is characterized in that The cell used to receive the wake-up signal is a cell with the smallest corresponding air interface propagation delay value in the cell group where the cell used to receive the wake-up signal is located.

9. The method according to claim 1, It is characterized in that Before the terminal device determines the target cell, the method further includes: The terminal device sends first indication information to the network device, where the first indication information is used to indicate an air interface propagation delay value corresponding to each cell of the carrier aggregation; The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target cell, and the target cell is the cell with the smallest corresponding air interface propagation delay value among the carrier aggregated cells.

10. The method according to claim 1, It is characterized in that Before the terminal device determines the target cell, the method further includes: The terminal device sends first indication information to the network device, where the first indication information is used to indicate an air interface propagation delay value corresponding to each cell of the carrier aggregation; The terminal device receives second indication information sent by the network device, the second indication information is used to indicate the target cell, the target cell is a cell in each cell group of N cell groups for receiving a wake-up signal; the second indication information is also used to indicate other cells in each cell group; wherein the N cell groups are obtained by grouping the cells of the carrier aggregation, and the absolute value of the difference between the air interface propagation delay values ​​corresponding to any two cells in each cell group of the N cell groups is less than or equal to a second threshold, the second threshold is determined by the network device, and N is a number greater than or equal to 1; the wake-up signal received on the target cell is used to control whether the terminal device is activated in the second cell group during the activation period; the second cell group includes the target cell, and the second cell group is included in the N cell groups.

11. The method according to claim 10, It is characterized in that The target cell is a cell with the smallest air interface propagation delay value in the cell group where the target cell is located.

12. The method according to any one of claims 3, 4, 7, 9 and 11, It is characterized in that The terminal device determining the target cell includes: The terminal device determines the target cell according to the first indication information or the second indication information.

13. A method for receiving a wake-up signal, It is characterized in that The method comprises: The terminal device determines a target secondary cell; the target secondary cell is determined by an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell is an air interface propagation delay value between a network device corresponding to the cell and the terminal device; The terminal device receives a wake-up signal on the primary cell; the wake-up signal is used to control whether the terminal device is activated in the target secondary cell and the primary cell during an activation period.

14. The method according to claim 13, It is characterized in that Before the terminal device determines the target secondary cell, the method further includes: The terminal device sends first indication information to the network device, where the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell.

15. The method according to claim 14, It is characterized in that The method further comprises: The terminal device receives second indication information sent by the network device, where the second indication information is used to confirm the first indication information; or The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target secondary cell, and the target secondary cell is determined according to the one or more secondary cells.

16. The method according to claim 15, It is characterized in that The terminal device determines a target cell, including: The terminal device determines the target cell according to the first indication information or the second indication information.

17. The method according to claim 13, It is characterized in that Before the terminal device determines the target secondary cell, the method further includes: The terminal device sends first indication information to the network device, where the first indication information is used to indicate an air interface propagation delay value corresponding to each cell of the carrier aggregation; The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate the target secondary cell.

18. The method according to any one of claims 14 to 17, It is characterized in that An absolute value of a difference between an air interface propagation delay value corresponding to the target secondary cell and an air interface propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

19. The method according to any one of claims 14 to 17, It is characterized in that The air interface propagation delay value corresponding to the target secondary cell is greater than or equal to the air interface propagation delay value corresponding to the primary cell.

20. The method according to claim 18, It is characterized in that The air interface propagation delay value corresponding to the target secondary cell is greater than or equal to the air interface propagation delay value corresponding to the primary cell.

21. A method for sending a wake-up signal, It is characterized in that The method comprises: The network device determines a target cell, where the target cell is determined according to an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between the network device corresponding to the cell in which the carrier is aggregated and the terminal device; The network device sends a wake-up signal on the target cell, and the wake-up signal is used to control whether the terminal device is activated during the activation period in the cell of the carrier aggregation.

22. The method according to claim 21, It is characterized in that Before the network device determines the target cell, the method further includes: The network device receives the first indication information sent by the terminal device, the first indication information is used to indicate one or more cells, the one or more cells include the target cell; the one cell is the cell with the smallest corresponding air interface propagation delay value among the carrier aggregated cells, and the multiple cells are the cells with smaller corresponding air interface propagation delay values ​​among the carrier aggregated cells.

23. The method according to claim 22, It is characterized in that The target cell is the one cell or one of the multiple cells; Before the network device sends a wake-up signal on the target cell, the method further includes: The network device sends second indication information to the terminal device, where the second indication information is used to confirm the first indication information; or, The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell.

24. The method according to claim 23, It is characterized in that The first indication information is further used to indicate an air interface propagation delay value corresponding to each cell in the multiple cells; the target cell is a cell with the smallest corresponding air interface propagation delay value in the multiple cells.

25. The method according to claim 21, It is characterized in that Before the network device determines the target cell, the method further includes: The network device receives first indication information sent by the terminal device, and the first indication information is used to indicate a cell in each of M cell groups for receiving a wake-up signal; wherein the M cell groups are obtained by grouping the cells of the carrier aggregation, and the absolute value of the difference between the air interface propagation delay values ​​corresponding to any two cells in each of the M cell groups is less than or equal to a first threshold; the first threshold is determined by the terminal device, or the first threshold is indicated by the network device, and M is a number greater than or equal to 1.

26. The method according to claim 25, It is characterized in that The first indication information is also used to indicate other cells in each cell group.

27. The method according to claim 26, It is characterized in that The target cell is determined based on a cell for receiving a wake-up signal in at least one of the M cell groups; the wake-up signal received on the target cell is used to control whether the terminal device is activated during an activation period in a cell of a first cell group, the first cell group includes the target cell, and the first cell group is included in the at least one cell group.

28. The method according to claim 27, It is characterized in that Before the network device sends a wake-up signal on the target cell, the method further includes: The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell.

29. The method according to any one of claims 26 to 28, It is characterized in that The cell used to receive the wake-up signal is a cell with the smallest corresponding air interface propagation delay value in the cell group where the cell used to receive the wake-up signal is located.

30. The method according to claim 22, It is characterized in that Before the network device determines the target cell, the method further includes: The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate an air interface propagation delay value corresponding to each cell of the carrier aggregation; The target cell is a cell having the smallest corresponding air interface propagation delay value among the cells aggregated by the carriers; Before the network device sends a wake-up signal on the target cell, the method further includes: The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell.

31. The method according to claim 22, It is characterized in that Before the network device determines the target cell, the method further includes: The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate an air interface propagation delay value corresponding to each cell of the carrier aggregation; The target cell is a cell in each cell group of N cell groups for receiving a wake-up signal, the N cell groups are obtained by grouping the cells of the carrier aggregation, the absolute value of the difference between the air interface propagation delay values ​​corresponding to any two cells in each cell group of the N cell groups is less than or equal to a second threshold, the second threshold is determined by the network device, and N is a number greater than or equal to 1; the wake-up signal received on the target cell is used to control whether the terminal device is activated in the second cell group cell during the activation period; the second cell group includes the target cell, and the second cell group is included in the N cell groups; Before the network device sends a wake-up signal on the target cell, the method further includes: The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target cell and other cells in each cell group.

32. The method according to claim 30, It is characterized in that The target cell is a cell with the smallest air interface propagation delay value in the cell group where the target cell is located.

33. The method according to any one of claims 22 to 31, It is characterized in that The network device determining the target cell includes: The network device determines the target cell according to the first indication information.

34. A method for sending a wake-up signal, It is characterized in that The method comprises: The network device determines a target secondary cell; the target secondary cell is determined by an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between the network device corresponding to the cell in which the carrier is aggregated and the terminal device; The network device sends a wake-up signal on the primary cell; the wake-up signal is used to control whether the terminal device is activated in the target secondary cell and the primary cell during the activation period.

35. The method according to claim 34, It is characterized in that Before the network device determines the target secondary cell, the method further includes: The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate one or more secondary cells, and the one or more secondary cells include the target secondary cell.

36. The method according to claim 35, It is characterized in that The target secondary cell is determined according to the multiple secondary cells; Before the network device sends the wake-up signal on the primary cell, the method further includes: The network device sends second indication information to the terminal device, where the second indication information is used to confirm the first indication information; or, The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target secondary cell.

37. The method according to claim 35, It is characterized in that The terminal device determines a target cell, including: The terminal device determines the target cell according to the first indication information.

38. The method according to claim 34, It is characterized in that Before the network device determines the target secondary cell, the method further includes: The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate an air interface propagation delay value corresponding to each cell of the carrier aggregation; The network device sends second indication information to the terminal device, where the second indication information is used to indicate the target secondary cell.

39. The method according to any one of claims 35 to 38, It is characterized in that An absolute value of a difference between an air interface propagation delay value corresponding to the target secondary cell and an air interface propagation delay value corresponding to the primary cell is less than or equal to a third threshold.

40. The method according to any one of claims 35 to 38, It is characterized in that The air interface propagation delay value corresponding to the target secondary cell is greater than or equal to the air interface propagation delay value corresponding to the primary cell.

41. The method according to claim 39, It is characterized in that The air interface propagation delay value corresponding to the target secondary cell is greater than or equal to the air interface propagation delay value corresponding to the primary cell.

42. A terminal device, It is characterized in that include: A processing unit, configured to determine a target cell, wherein the target cell is determined according to an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between a network device corresponding to the cell in which the carrier is aggregated and the terminal device; A communication unit is used to receive a wake-up signal on the target cell, and the wake-up signal is used to control whether the terminal device is activated during the activation period in the cell of the carrier aggregation.

43. A terminal device, It is characterized in that include: A processing unit, configured to determine a target secondary cell; the target secondary cell is determined by an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between a network device corresponding to the cell in which the carrier is aggregated and the terminal device; A communication unit is used to receive a wake-up signal on a primary cell, where the wake-up signal is used to control whether the terminal device is activated in the target secondary cell and the primary cell during an activation period.

44. A network device, It is characterized in that include: A processing unit, configured to determine a target cell, wherein the target cell is determined according to an air interface propagation delay value corresponding to a cell in which a terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between a network device corresponding to the cell in which the carrier is aggregated and the terminal device; A communication unit is used to send a wake-up signal on the target cell, and the wake-up signal is used to control whether the terminal device is activated during the activation period in the cell of the carrier aggregation.

45. A network device, It is characterized in that include: A processing unit, configured to determine a target secondary cell; the target secondary cell is determined by an air interface propagation delay value corresponding to a cell in which the terminal device performs carrier aggregation, and the air interface propagation delay value corresponding to the cell in which the carrier is aggregated is an air interface propagation delay value between a network device corresponding to the cell in which the carrier is aggregated and the terminal device; A communication unit is used to send a wake-up signal on a primary cell; the wake-up signal is used to control whether the terminal device is activated in the target secondary cell and the primary cell during an activation period.

46. ​​A terminal device, It is characterized in that include: processors and transceivers; The transceiver is used to receive a signal or send a signal; the processor is used to execute the computer execution instructions stored in the memory, so that the terminal device executes the method according to any one of claims 1-20.

47. A network device, It is characterized in that include: processors and transceivers; The transceiver is used to receive a signal or send a signal; the processor is used to execute the computer execution instructions stored in the memory so that the network device executes the method as described in any one of claims 21-41.

48. A computer readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and when the computer program runs on one or more processors, the method according to any one of claims 1 to 20 or the method according to any one of claims 21 to 41 is executed.

Images