Communication method and related device

Abstract

The invention provides a communication method and a related device, through the method, network equipment can dynamically adjust the coverage range of a low-power-consumption wake-up signal according to a network load, and on the premise of ensuring that normal data service transmission is not influenced, the coverage range is dynamically adjusted, so that the communication efficiency is improved. According to the technical scheme, a better balance point is found between the energy-saving effect and the resource utilization efficiency, the energy-saving advantage of the low-power-consumption wake-up signal can be played to the maximum extent, excessive occupation of network resources can be effectively avoided, and the overall performance of the network and the user experience are improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and related devices. Background Art

[0002] To reduce the power consumption of terminal devices, the 3rd Generation Partnership Project (3GPP) has introduced a Low Power Wake Up Signal (LP-WUS). For power-sensitive terminal devices, the LP-WUS can effectively reduce power consumption.

[0003] A terminal device may include a Main Receiver (MR) and a Low Power Wake Up Receiver (LR or LP-WUR). When the MR in the terminal device is turned off and the LR is turned on, the LP-WUS can be monitored for signals. The LP-WUS can indicate whether to wake up the MR. If the LP-WUS indicates to wake up the MR, after waking up the MR, the terminal device can monitor signals for a paging occasion (PO) through the MR. If the LP-WUS indicates not to wake up the MR, the MR remains in the off state. Compared with the state where the terminal device monitors signals for the PO, when the terminal device is in the state of monitoring signals for the LP-WUS, the MR is in the off state, which helps to save power.

[0004] However, in the case of busy downlink traffic in a cell, the LP-WUS will occupy a large amount of resources of the network device, making the network device may face the problem of insufficient resources, resulting in a decline in service quality. Therefore, how to maximize the reduction of the power consumption of terminal devices while ensuring the service resource requirements is a problem that needs to be considered currently. Summary of the Invention

[0005] A communication method and related devices provided by an embodiment of this application can dynamically adjust the coverage range of the LP-WUS according to the network load through this method, and then maximize the power saving of the terminal device through the LP-WUS while meeting the service transmission requirements.

[0006] In a first aspect, an embodiment of this application provides a communication method. This method can be applied to a network-side device. The network-side device can be a network device, or a component applied to a network device (for example, a processor, a chip, a circuit, or a chip system, etc.), or can also be a logic module or software that can implement all or part of the functions of the network device. The method includes: Receiving first information, where the first information includes first channel state information; Determine a first total number according to the first channel state information, where the first total number includes the number of times required for the network device to send a low-power wake-up signal (LP-WUS) to each terminal device in each of the M regions, the M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; Determine a first coverage range according to the first total number and the network load, where the first coverage range is the regions in the M regions that meet the load requirements; Send a first low-power wake-up signal to a first terminal device, where the first terminal device is a terminal device within the first coverage range.

[0007] Exemplarily, the first channel state information includes the channel state information reported by the terminal devices in the cell to the network device.

[0008] In the above method, in order to flexibly adjust the coverage area of the LP-WUS, the coverage area of the network device can be divided into multiple regions. The first channel state information is the channel state information reported by the terminal device to the network device and can be used to reflect the propagation quality of the signal in the propagation medium. Therefore, the network device can calculate the number of times of sending the LP-WUS required by the terminal devices in each region according to the first channel state information. Then, the network device combines the current load situation and the number of times of the LP-WUS required by each region to adjust the coverage range of the LP-WUS, so that the adjusted coverage range of the LP-WUS can meet the current service requirements, and thus while ensuring the service resource requirements, the terminal energy-saving effect can be maximized.

[0009] In a possible implementation manner of the first aspect, the determining the first total number according to the first channel state information includes: Determine the number of repetitions required to send the low-power wake-up signal to the i th packet according to the first channel state information, where the i th packet includes at least one terminal device, the i th packet belongs to any one of the I packets, and the I packets include the packets after the network device divides the terminal devices within the coverage range, i is less than or equal to I, i and I is a positive integer; Respectively count the number of packets in each of the M regions; Determine the first total number according to the number of packets and the number of repetitions.

[0010] In the above method, since the LP-WUS is transmitted in groups, the total number of times required for the determined area is also calculated in groups, so that the total number of times required for the area can conform to the actual application of the LP-WUS, ensuring the accuracy of the first total number of times.

[0011] In a possible implementation manner of the first aspect, the determining the number of repetitions required to send the low-power wake-up signal to the i-th packet according to the first channel state information includes: Calculating an interruption probability of sending the low-power wake-up signal to the i-th packet according to the first channel state information; Determining the number of repetitions according to the interruption probability, where the number of repetitions satisfies the following condition: a first probability determined by sending the low-power wake-up signal according to the number of repetitions at the interruption probability is greater than or equal to a preset threshold.

[0012] In one implementation, the preset threshold may be 95%.

[0013] In the above method, the network device can calculate the interruption probability of sending the LP-WUS according to the channel state information reported by the terminal device, that is, the probability of unsuccessful sending of the LP-WUS. For example, unsuccessful sending of the LP-WUS means that the number of times of sending the LP-WUS is not enough for the terminal device to receive the LP-WUS. Therefore, based on this interruption probability, the probability of successful sending of the LP-WUS (i.e., the first probability) can be calculated. For example, successful sending of the LP-WUS means that the number of times of sending the LP-WUS is enough for the terminal device to receive the LP-WUS. Furthermore, when the first probability is greater than the preset threshold, it can be considered that this number of times can make the sending of the LP-WUS successful.

[0014] In a possible implementation manner of the first aspect, the first channel state information includes a first signal-to-interference-plus-noise ratio and a first block error rate, and the interruption probability satisfies the following formula:

[0015] Where represents the interruption probability, represents a reference interruption probability at a second signal-to-interference-plus-noise ratio and a second block error rate under the condition, represents the first signal-to-interference-plus-noise ratio, represents the first block error rate, represents a third signal-to-interference-plus-noise ratio, represents a third block error rate, and respectively represent weight coefficients, the second signal-to-interference-plus-noise ratio is less than or equal to the first threshold, the second block error rate is greater than or equal to the second threshold, the third signal-to-interference-plus-noise ratio is greater than or equal to the third threshold, the third block error rate is less than or equal to the fourth threshold, the first threshold is less than the third threshold, and the second threshold is greater than the fourth threshold.

[0016] In the above method, SINR and BLER are metrics / parameters used to reflect the channel quality. The higher the SINR, the stronger the useful signal, the smaller the influence of interference and noise, and the higher the reliability of the communication link. BLER represents the proportion of erroneously received data blocks in the total transmitted data blocks during transmission, reflecting the error probability of data transmission. Therefore, based on this parameter, the probability of failure in transmitting (transferring) LP-WUS can be calculated more accurately, providing the accuracy of the interruption probability, and further providing the credibility of the first total number.

[0017] In a possible implementation manner of the first aspect, the determining the first coverage area according to the first total number and the network load includes: According to the transmission period of the network device T and the transmission occupancy duration of the service t and the single occupancy duration of the low-power wake-up signal to determine the first number, where the first number is used to indicate the maximum number of times the network device sends the low-power wake-up signal under the network load, and the first number L satisfies the following conditions: ; The area identifier indicated by the first coverage area satisfies the following conditions: , where represents the second number, represents the third number, represents the first number, the first total number includes the first number and the second number, the first number is used to indicate the number of times the network device needs to send the low-power wake-up signal to the terminal devices in the m area, the second number is used to indicate the second number of times the network device needs to send the low-power wake-up signal to the terminal devices in the m +1 area, the m area and the m +1 area belong to the M areas, m is a positive integer.

[0018] In the above method, the transmission period indicates the time interval required for a network device to complete a full data transmission, reception, and signal interaction during data communication. Therefore, the network device can calculate the total number of times the LP-WUS can be sent / transmitted during one transmission period under the condition of meeting the current service data transmission. Furthermore, the network device can determine the maximum number of times the LP-WUS can be sent while ensuring the service resource requirements, and thus the network device can find the area that can meet this maximum number from the M areas. Therefore, the finally determined first coverage area is the area that maximizes the terminal energy-saving effect while ensuring the N service resource requirements.

[0019] In a possible implementation manner of the first aspect, the method further includes: When the total transmission duration of the network device is greater than the transmission period, update the first coverage range, for example, narrow the first coverage range, where the total transmission duration includes: the transmission occupancy duration of the service t and the first total duration, and the first total duration is used to indicate the duration required to send the low-power wake-up signal to the m terminal devices within the area.

[0020] In a possible implementation manner of the first aspect, the method further includes: When the total transmission duration of the network device is less than the transmission period, update the first coverage range, for example, expand the first coverage range, where the total transmission duration includes: the transmission occupancy duration of the service t and the first total duration, and the first total duration is used to indicate the duration required to send the low-power wake-up signal to the m terminal devices within the area.

[0021] In the above method, on the premise of ensuring that the normal data service transmission is not affected, the network device finds a better balance between the energy-saving effect and the resource utilization efficiency by dynamically adjusting the coverage range (for example, narrowing or expanding the LP-WUS coverage range), which can not only maximize the energy-saving advantage of LP-WUS but also effectively avoid over-occupying network resources, improving the overall performance of the network and the user experience.

[0022] In a possible implementation manner of the first aspect, the method further includes: Send first indication information to a second terminal device, where the second terminal device belongs to the terminal devices within the second coverage range, and the second coverage range is the range within the coverage range of the network device except the first coverage range, and the first indication information is used to indicate the terminal devices within the second coverage range to exit the LP-WUS mode.

[0023] In the above method, after the network device determines the adjusted coverage range, it may instruct the terminal devices not within the coverage range to exit the LP-WUS mode, wake up the primary receiver, and monitor the paging occasion (PO) signals through the primary receiver to avoid missing the PO.

[0024] In a possible implementation manner of the first aspect, the first low-power wake-up signal is used to indicate waking up the primary receiver of the terminal devices within the first coverage range or to indicate not waking up the primary receiver of the terminal devices within the first coverage range.

[0025] In the above method, the terminal devices within the first coverage range can monitor the LP-WUS signals. When in the state of monitoring the LP-WUS signals, the MR is in the off state, which is beneficial to power saving.

[0026] In a second aspect, an embodiment of the present application provides a communication method. This method can be applied to a terminal-side device. The terminal-side device can be a first terminal device, or a component applied to the first terminal device (such as a processor, a chip, a circuit, or a chip system, etc.), or can also be a logic module or software that can implement all or part of the functions of the first terminal device. The method includes: Sending first information, where the first information includes first channel state information. The first channel state information is used to determine a first total number of times. The first total number of times includes the number of times required for the network device to send the low-power wake-up signal LP-WUS to the terminal devices in each of the M regions respectively. The M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; The receiver receives the first low-power wake-up signal, where the first terminal device is located within the first coverage range. The first coverage range is determined according to the first total number of times and the network load. The first coverage range is the region that meets the load requirements among the M regions.

[0027] In a possible implementation manner of the second aspect, when the first low-power wake-up signal is used to indicate waking up the primary receiver, the primary receiver is turned on; When the first low-power wake-up signal is used to indicate not waking up the primary receiver, the primary receiver is kept off.

[0028] In the above method, after the network device determines the adjusted coverage range, the terminal devices within the first coverage range can monitor the LP-WUS signals. When in the state of monitoring the LP-WUS signals, the MR is in the off state, which is beneficial to power saving.

[0029] In a third aspect, an embodiment of the present application provides a communication method, which can be applied to a terminal-side device. The terminal-side device can be a second terminal device, or a component applied to the second terminal device (such as a processor, a chip, a circuit, or a chip system, etc.), or can also be a logical module or software that can implement all or part of the functions of the second terminal device. The method includes: Send first information, where the first information includes first channel state information, and the first channel state information is used to determine a first total number of times. The first total number of times includes the number of times required for the network device to send a low-power wake-up signal LP-WUS to each terminal device in each of M regions. The M regions include the regions after the network device divides its coverage area, and M is a positive integer greater than or equal to 2; Receive first indication information, where the first indication information is used to instruct the terminal device within a second coverage range to exit the LP-WUS mode. The second terminal device is located within the second coverage range. The second coverage range is the coverage range of the network device except for the first coverage range. The terminal device located within the first coverage range is used to receive a first low-power wake-up signal. The first coverage range is determined according to the first total number of times and the network load, and the first coverage range is the region that meets the load demand among the M regions.

[0030] In a possible implementation manner of the third aspect, the second terminal device includes a main receiver, and the method further includes: Turn on the main receiver and perform signal monitoring on the paging occasion through the main receiver.

[0031] In the above method, after the network device determines the adjusted coverage range, it can instruct the terminal device not within the coverage range to exit the LP-WUS mode, wake up the main receiver, and perform signal monitoring on the paging occasion (paging occasion, PO) through the main receiver to avoid missing the PO.

[0032] In a fourth aspect, an embodiment of the present application provides a communication device, which can be a terminal device (such as a first terminal device or a second terminal device), or a component in the terminal device (such as a processor, a chip, a circuit, or a chip system, etc.), or can also be a logical module or software that can implement all or part of the functions of the terminal device.

[0033] In a possible implementation, the communication device can include modules or units or means corresponding one by one to the methods / operations / steps / actions described in the second aspect or the third aspect. The modules or units or means can be hardware circuits, software, or a combination of hardware circuits and software.

[0034] In a fifth aspect, embodiments of the present application provide a communication device, which may be a network device, a component in a network device (e.g., a processor, a chip, a circuit, or a chip system, etc.), or may also be a logical module or software capable of implementing all or part of the functions of a network device.

[0035] In a possible implementation, the communication device may include modules, units, or means corresponding one by one to the methods / operations / steps / actions described in the first aspect. The module, unit, or means may be a hardware circuit, software, or a combination of hardware circuit and software.

[0036] In a sixth aspect, embodiments of the present application provide a communication device, which includes at least one processor, and the at least one processor is used to call a computer program or instruction to execute the method in the first aspect or the possible implementation manners in the first aspect.

[0037] In a possible implementation, the communication device further includes a memory and a communication interface. Optionally, the memory and the processor are integrated together.

[0038] In a possible implementation, the memory is located outside the communication device.

[0039] In a seventh aspect, embodiments of the present application provide a communication device, which includes at least one processor, and the at least one processor is used to call a computer program or instruction to execute the method in the second aspect or the possible implementation manners in the second aspect.

[0040] In a possible implementation, the communication device further includes a memory and a communication interface. Optionally, the memory and the processor are integrated together.

[0041] In a possible implementation, the memory is located outside the communication device.

[0042] In an eighth aspect, embodiments of the present application provide a chip device, which includes at least one processor, and the at least one processor is used to call a computer program or instruction to implement the method in any of the above aspects or the possible implementation manners in any of the above aspects.

[0043] In a possible implementation manner, the input of the chip device corresponds to the receiving operation in any of the above aspects or the possible implementation manners in any of the above aspects, and the output of the chip device corresponds to the sending operation in any of the above aspects or the possible implementation manners in any of the above aspects.

[0044] Optionally, the processor is coupled to the memory through an interface.

[0045] Optionally, the chip device further includes a memory, in which computer programs or instructions are stored.

[0046] In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer programs or instructions are stored. When the computer programs or instructions are run on a processor, the methods in any of the above aspects are implemented.

[0047] In a tenth aspect, an embodiment of the present application provides a computer program product, which includes computer programs or instructions. When the computer programs or instructions are run on a processor, the methods in any of the above aspects are implemented.

[0048] In an eleventh aspect, an embodiment of the present application provides a communication system, which includes: the device in the fifth aspect and the device in the sixth aspect. Description of the Drawings

[0049] The drawings used in the embodiments of the present application are introduced below.

[0050] Figure 1 It is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application; Figure 2 It is a schematic diagram of the architecture of a terminal device; Figure 3 It is a schematic flowchart of a communication method provided by an embodiment of the present application; Figure 4 It is a schematic diagram of the repetition times corresponding to M regions respectively provided by an embodiment of the present application; Figure 5 It is a schematic diagram of the structure of a communication device provided by an embodiment of the present application; Figure 6 It is a schematic diagram of the structure of another communication device provided by an embodiment of the present application. Detailed Embodiments

[0051] The terms "system" and "network" in this application may be used interchangeably. Unless otherwise specified, " / " means that the objects associated before and after are in an "or" relationship. For example, A / B may mean A or B. The "and / or" in this application is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. Here, A and B can be singular or plural. Also, in the description of this application, unless otherwise specified, "a plurality of" means two or more than two. "At least one (item)" or its similar expressions refer to any combination of these items, including any combination of single item(s) or plural item(s). For example, at least one (item) of a, b, or c may mean: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be one or multiple. Additionally, for the convenience of clearly describing the technical solutions of this application, in the embodiments of this application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions for network elements. Those skilled in the art can understand that the terms such as "first" and "second" do not limit the quantity and execution order, and the terms such as "first" and "second" do not necessarily mean different.

[0052] References described in this application such as "in one implementation" or "exemplarily" or "in one implementation" etc. mean that in one or more embodiments of this application, specific features, structures, or characteristics described in combination with that embodiment are included. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprise", "include", "have" and their variants all mean "include but not limited to", unless otherwise specifically emphasized in other ways.

[0053] In this application, "information", "signal", "message", "channel", and "signaling" can sometimes be used interchangeably. It should be noted that when not emphasizing their differences, the meanings they express are matched. "Of", "corresponding", and "corresponding to" can sometimes be used interchangeably. It should be noted that when not emphasizing their differences, the meanings they express are matched. In addition, the " / " mentioned in this application can be used to represent an "or" relationship.

[0054] It can be understood that in the present application, "indication" may include direct indication, indirect indication, display indication, and implicit indication. When it is described that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0055] In the present application, the information indicated by the indication information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated, etc., or the information to be indicated can be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to only indicate a part of the information to be indicated, while the other parts of the information to be indicated are known or pre-agreed. For example, the arrangement order of each piece of information pre-agreed (such as stipulated by a protocol) can also be used to implement the indication of specific information, thereby reducing the indication overhead to a certain extent.

[0056] The information to be indicated can be sent as a whole, or can be divided into multiple sub-information and sent separately, and the sending periods and / or sending opportunities of these sub-information can be the same or different. The specific sending method is not limited in the present application. Among them, the sending periods and / or sending opportunities of these sub-information can be predefined, for example, predefined according to a protocol, or can be configured by the transmitting device by sending configuration information to the receiving device.

[0057] It can be understood that "sending" and "receiving" in the present application represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information is XX, which can include directly sending through the air interface, and also includes indirectly sending through other units or modules through the air interface. "Receiving information from YY" can be understood as the source of the information is YY, which can include directly receiving from YY through the air interface, or can also include indirectly receiving from YY through the air interface from other units or modules. "Sending" can also be understood as "output" of the chip interface, and "receiving" can also be understood as "input" of the chip interface.

[0058] In other words, sending and receiving can be carried out between devices. For example, between a network device and a terminal device, or can also be carried out within a device. For example, sending or receiving between components, modules, chips, software modules or hardware modules within a device through a bus, trace or interface.

[0059] It can be understood that the information may be subjected to necessary processing, such as encoding, modulation, etc. between the source end and the destination end of the information sending, but the destination end can understand the valid information from the source end. Similar expressions in the present application can be understood similarly and will not be elaborated here.

[0060] The communication method provided by the embodiments of the present application can be applied to cellular communication systems related to the 3rd generation partnership project (3GPP), for example, 4th generation (4G) communication systems, such as long term evolution (LTE) communication systems. For example, the LTE communication system can include an LTE frequency division duplex (FDD) communication system and an LTE time division duplex (TDD) communication system. It can also be applied to 5th generation (5G) communication systems, such as 5G new radio (NR) communication systems, or applied to various future communication systems and future communication networks. The method provided by the embodiments of the present application can also be applied to Bluetooth systems, wireless fidelity (WiFi) systems, LoRa systems, or vehicle-to-everything (V2X) communication systems, communication systems that support the integration of multiple wireless technologies, device-to-device (D2D) systems, vehicle-to-everything (V2X) communication systems, machine-to-machine (M2M) communication systems, machine type communication (MTC) systems, and Internet of Things (IoT) communication systems or other communication systems. The method provided by the embodiments of the present application can also be applied to satellite communication systems, where the satellite communication system can be integrated with the above communication systems. The wireless communication systems involved in the present application further include, but are not limited to, wireless local area network (WLAN) systems and narrow band-internet of things (NB-IoT) systems.

[0061] First, an exemplary description will be given of the communication systems to which the technical solutions provided by the embodiments of the present application are applicable.

[0062] Please refer to Figure 1 , Figure 1 which is a schematic diagram of the architecture of a communication system provided by the embodiments of the present application. As Figure 1 shown, the communication system 10 includes a radio access network (RAN) 100 (as Figure 1as shown by the dashed line part) and a core network (CN) 200. Exemplarily, the RAN 100 includes at least one network device 110 and at least one terminal device 120a - 120c. The terminal devices 120a - 120c are connected to the network device 110 wirelessly. Figure 1 In, the larger solid circle represents the cell coverage range of the network device 110, and the smaller solid circle represents the LP - WUS coverage range, that is, the signal coverage range of the LP - WUS sent by the network device 110. In one implementation, the LP - WUS coverage range can be smaller than the cell coverage range. In another implementation, the LP - WUS coverage range can be equal to the cell coverage range. When the terminal device is within the LP - WUS coverage range, it can monitor and receive LP - WUS. When the terminal device is within the cell coverage range, it can perform signal monitoring on the PO and receive paging messages.

[0063] From Figure 1 it can be seen that the terminal device 120a is located in the central area of the cell, the terminal device 120c is located in the edge area of the cell, and the terminal device 120b is located in a non - central area and a non - edge area of the cell. In the embodiments of the present application, the central area refers to the area within the cell that is relatively close to the network device 110, has strong signal strength and stable communication quality, and is usually located in the central area covered by the main lobe of the antenna. The edge area refers to the peripheral area of the cell coverage range, which is far from the network device 110 and is usually located at the boundary of the cell coverage, close to the coverage range of the neighboring cell.

[0064] The RAN 100 may also include other RAN nodes, for example, wireless relay devices and / or wireless backhaul devices ( Figure 1 not shown in the figure) and so on. The network device 110 is connected to the core network 200 wirelessly or by wire. The core network devices ( Figure 1 not shown) in the core network 200 and the network device 110 in the RAN 100 may be different physical devices respectively, or may be the same physical device integrating the core network logic function and the radio access network logic function.

[0065] It should be noted that the RAN 100 may be a 3GPP - related cellular system, for example, 4G, 5G mobile communication systems, or an evolved system after 5G (such as 6G mobile communication system). The RAN 100 may also be an open radio access network (open RAN, O - RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), etc. The RAN 100 may also be a communication system integrating two or more of the above systems. It should be declared that, Figure 1The quantities of the network devices and terminal devices are merely illustrative and should not be construed as specific limitations to this application. The terminal devices and network devices involved in the system architecture will be described in detail below.

[0066] I. Terminal Devices The terminal device mentioned in the embodiments of this application may include a main receiver (MR) and a low-power wake-up receiver (LR or LP-WUR) inside. Please refer to Figure 2 , Figure 2 for the schematic diagram of the terminal device architecture. As Figure 2 shown, the low-power wake-up signal LP-WUS may indicate to wake up the main receiver MR or not to wake up the main receiver MR. When the terminal device turns off the main receiver MR and turns on the low-power wake-up receiver LR, it can monitor the low-power wake-up signal LP-WUS. If the low-power wake-up signal LP-WUS indicates to wake up the main receiver MR, after waking up the main receiver MR, the terminal device can monitor the paging occasion (PO) through the main receiver MR. If the low-power wake-up signal LP-WUS indicates not to wake up the main receiver MR, the main receiver MR remains in the off state.

[0067] This terminal device may be a power-sensitive device, or rather, this terminal device has low power requirements. Optionally, this terminal device may be a static, movement-limited, and / or low-speed moving device.

[0068] The terminal device can also be referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., or a device used to provide voice or data connectivity to users, and can also be an Internet of Things device. For example, terminal devices include handheld devices with wireless connection functions, in-vehicle devices, etc. Currently, terminal devices can be: mobile phones, tablet computers, laptop computers, handheld computers, mobile Internet devices (MIDs), wearable devices, in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rails, etc.), satellite terminals, virtual reality (VR) devices, augmented reality (AR) devices, intelligent point of sale (POS) machines, customer-premises equipment (CPE), wireless terminals in industrial control, smart home devices (such as refrigerators, TVs, air conditioners, electricity meters, etc.), intelligent robots, robotic arms, workshop equipment, wireless terminals in unmanned driving, wireless terminals in remote medical treatment, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, flying devices (such as intelligent robots, hot air balloons, drones, airplanes), etc. The terminal device can also be other devices with terminal functions. For example, the terminal device can also be a device that serves as a terminal function in D2D communication.

[0069] The embodiments of this application do not limit the device form of the terminal device. The device for implementing the functions of the terminal device can be the terminal device; it can also be a device capable of supporting the terminal device to implement this function, such as a chip system. This device can be installed in the terminal device or used in matching with the terminal device. In the embodiments of this application, the chip system can be composed of chips, or can also include chips and other discrete devices.

[0070] II. Network Device The network device is a node in the radio access network (RAN), and can also be called an access network device, or can also be called a RAN node (or device). The network device is used to help the terminal device achieve wireless access.

[0071] In a possible scenario, the network device can be a base station, evolved NodeB (eNodeB), transmitting and receiving point (TRP), transmitting point (TP), next generation NodeB (gNB), next generation base station in the 6th generation (6G) mobile communication system, base station in a future mobile communication system, satellite, integrated access and backhaul (IAB) node, network device in a non-terrestrial network (NTN) communication system, that is, it can be deployed on a high-altitude platform or satellite, etc. The network device can be a macro base station, micro base station or indoor station, relay node or donor node, or a radio controller in a CRAN scenario. The network device can also be a device that serves as a base station function in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, drone communication, or machine communication. Optionally, the network device can also be a server, wearable device, vehicle or in-vehicle device, etc. For example, the network device in vehicle-to-everything (V2X) technology can be a road side unit (RSU). th In the present application, all or part of the functions of the network device can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The network device in the present application can also be a logical node, logical module or software that can implement all or part of the network device functions.

[0072]

[0073] ​In another possible scenario, multiple network devices cooperate to assist a terminal device in achieving wireless access, and different network devices respectively implement some functions of a base station. For example, the network device may be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU may be separately provided, or may also be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It can be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be classified as a network device in the radio access network (RAN), or the CU may be classified as a network device in the core network (CN), which is not limited herein.

[0074] In different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU may also be referred to as an O-CU (open CU), the DU may also be referred to as an O-DU, the CU-CP may also be referred to as an O-CU-CP, the CU-UP may also be referred to as an O-CU-UP, and the RU may also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU, and RU are used as examples in this application. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0075] In the embodiments of this application, the form of the network device is not limited. The device for implementing the functions of the network device may be the network device; or it may be a device capable of supporting the network device in implementing the functions, such as a chip system. The device may be installed in the network device or used in cooperation with the network device.

[0076] Currently, in order to balance the terminal power consumption and the network service reliability, conditions for the terminal device to enter or exit the LP-WUS monitoring are set. For example, when the signal quality meets the standard (such as the reference signal receiving power (RSRP) ≥ -120 dBm), the terminal device can enter the LP-WUS monitoring. The terminal device within the LP-WUS coverage range can monitor and receive LP-WUS. When the terminal device detects a wake-up signal carrying its own identifier, the main receiver MR can be triggered to activate, and the signal monitoring of LP-WUS can be stopped. However, in some cases, such as when the downlink load in the cell is too high, on the one hand, the scheduling resources of the network device (such as time-frequency resources, etc.) may not be sufficient to meet the LP-WUS transmission requirements of all low-power wake-up receivers LR within the LP-WUS coverage range at the same time. If the standard configuration repetition times are strictly followed, it may lead to unbalanced resource allocation, and some terminal devices cannot be woken up in time. On the other hand, the terminal devices in the cell edge area within the LP-WUS coverage range need a higher LP-WUS repetition times to reliably receive LP-WUS due to severe signal attenuation. However, the high repetition times will occupy more downlink resources, exacerbate the network load, and lead to a decline in the service quality of the service. Among them, the "terminal device in the cell edge area within the LP-WUS coverage range" can also be considered as the "terminal device in the edge range within the LP-WUS coverage range".

[0077] In summary, during the period when the downlink load in the cell is too high (i.e., traffic peak), since the LP-WUS coverage range is a fixed coverage range, the LP-WUS monitoring of the terminal devices within this LP-WUS coverage range requires a large amount of resources, resulting in a decline in the service quality of the service. How to make the LP-WUS coverage range adaptively expand and contract with the network load change, so as to maximize the terminal energy-saving effect while ensuring the NR service resource requirements is an issue that needs to be considered urgently at present.

[0078] In view of this, a communication method provided in this application enables the network device to indicate that the entry standard for LP-WUS monitoring is more stringent. For example, only the terminal devices in the cell center can activate the LP-WUS monitoring. Since these terminal devices do not require repeated transmissions or only require a small number of repeated transmissions, they will not occupy too much downlink resources. The terminal devices in the cell edge area will fall back to monitor the paging occasion (PO) signals through the main receiver MR in the idle state or non-activated state.

[0079] The embodiments of this application will be introduced in detail below with reference to the accompanying drawings.

[0080] Please refer to Figure 3 , Figure 3It is a schematic flowchart of a communication method provided by an embodiment of the present application. Optionally, this method can be applied to a communication system, for example, applied to Figure 1 the communication system shown.

[0081] As Figure 3 shown, the method may include steps S301 - S305. It should be understood that for the convenience of description, the present application describes in the order of steps S301 - S305, but does not limit that it must be executed in the above order. The embodiments of the present application do not limit the execution sequence, execution time, execution times, etc. of the above one or more steps. Steps S301 - S305 are specifically as follows: Step S301: The terminal device sends a first piece of information to the network device. The first piece of information includes first channel state information. Correspondingly, the network device receives the first piece of information.

[0082] Specifically, before the terminal devices (such as the first terminal device and the second terminal device) in the cell enter LP - WUS monitoring (i.e., the low - power mode), they can send the first piece of information to the network device according to the configuration information sent by the network device to report the first channel state information to the network device. That is, the first channel state information includes the channel state information reported by the terminal devices in the cell. Exemplarily, the first channel state information includes the first signal - to - interference - plus - noise ratio (SINR) and the first block error rate (BLER). SINR and BLER are the core indicators for measuring the link quality in wireless communication. Exemplarily, the network device can configure the following parameters for the terminal device through radio resource control (RRC) signaling or downlink control information (DIC): reporting type, reference signal, reporting content, reporting period / trigger condition. The terminal device performs the following operations based on the reference signal configured by the network device: Operation 1: Measure SINR. The terminal device calculates SINR by measuring the reference signal received power (RSRP) and the reference signal received quality (RSRQ). The formula is: , total received power RSRP × the number of resource blocks (RB). The unit of SINR is decibel (dB).

[0083] Operation 2: Generate a channel quality indicator (CQI), quantize the SINR into a CQI, and each CQI corresponds to a specific modulation and coding scheme (MCS) and a target BLER (such as 10%).

[0084] Operation 3: Implicitly feedback BLER-related information. The terminal device usually does not directly report BLER data, but indirectly reflects the link quality in the following way. For example, hybrid automatic repeat-reQuest (HARQ) feedback is used. The network device is informed whether the transport block (TB) is successfully transmitted through positive feedback (acknowledgement, ACK) / negative feedback (negative acknowledgement, NACK). The network device counts the number of retransmissions to estimate the BLER.

[0085] Exemplarily, the above terminal device is a terminal device within the cell range. In a communication system, a cell is described by a higher layer from the perspective of resource management, mobility management, or service unit. The coverage area of each network device can be divided into one or more cells, and each cell can correspond to one or more frequency points. Or rather, each cell can be regarded as an area formed by the coverage ranges of one or more frequency points.

[0086] It should be noted that a cell can be an area within the coverage range of the wireless network of a network device. In the embodiments of the present application, different cells can correspond to the same or different network devices. For example, the network device to which cell 1 belongs and the network device to which cell 2 belongs can be different network devices (such as base stations). That is to say, cell 1 and cell 2 can be managed by different base stations. Or, for another example, the network device that manages cell 1 and the network device that manages cell 2 can also be different radio frequency processing units of the same base station. For example, a radio remote unit (RRU). That is to say, cell 1 and cell 2 can be managed by the same base station, with the same baseband processing unit and intermediate frequency processing unit, but different radio frequency processing units. Or, for yet another example, the network device to which cell 1 belongs and the network device to which cell 2 belongs can be the same network device (such as a base station). That is to say, cell 1 and cell 2 can be managed by the same base station. In this case, it can be called that cell 1 and cell 2 share the same station. The present application does not make special limitations on this.

[0087] In some possible deployments, the base station may include a CU and a DU. In such a deployment, cell 1 and cell 2 may be managed by the same CU and the same DU, that is, sharing the CU and sharing the DU; cell 1 and cell 2 may be managed by the same CU and different DUs, that is, sharing the CU but not sharing the DU; cell 1 and cell 2 may also be managed by different CUs and different DUs, that is, not sharing the CU and not sharing the DU.

[0088] Step S302: The network device determines the first total number according to the first channel state information.

[0089] Wherein, the first total number includes the maximum number of repetitions for indicating that the network device sends a low-power wake-up signal LP-WUS to each terminal device in each of the M regions. The M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2.

[0090] Specifically, in order for the network device to dynamically adjust the coverage range of the LP-WUS, the network device may first divide the coverage range of the wireless network into M concentric circles with its own location as the center. The coverage ranges respectively occupied by the M concentric circles can be called M regions, and M is a positive integer greater than or equal to 2. Then, the network device respectively counts the total number of transmissions (transmissions) of the LP-WUS required for each of the above M regions, that is, counts the total number of times required to send a low-power wake-up signal to the terminal devices in any one of the M regions. Therefore, the first total number includes but is not limited to: the total number in the first region, the total number in the second region... the total number in the Mth region.

[0091] In a possible implementation manner, the network device may first calculate the number of repetitions required to send a low-power wake-up signal LP-WUS to the terminal device, and then count the number of terminal devices in each region, and then can determine the total number of transmissions of the LP-WUS in each region, that is, the total number of transmissions is the sum of the repetitions corresponding to each terminal device.

[0092] Specifically, since the load carried by the LP-WUS signal is usually 8 to 16 bits (bit), if an identity (ID) is assigned to each terminal device in the cell, at least 24 bits may be required. Therefore, the number of bits of the LP-WUS signal cannot assign an ID number to each terminal device. Therefore, it is necessary to allocate the terminal devices into a certain group so that an LP-WUS can wake up a group of terminal devices at one time. Therefore, the network device sends the LP-WUS to the terminal devices in the form of groups, so the network device can calculate (that is, determine) the number of repetitions required to send a low-power wake-up signal to each group (for example, the terminal devices in the ith group) according to the channel state information reported by the terminal devices in the cell. , the i th group belongs to any one of the I groups, and the I groups include the groups obtained by the network device dividing the terminal devices within the coverage area. i is less than or equal to I, i and I is a positive integer. Then, the network device respectively counts the number of groups in each of the M regions, and based on the number of groups in each region and the corresponding repetition times of each group, the total number of transmissions of the LP-WUS in each region (i.e., the first total number) can be determined. Assume that the number of groups in the mth region is , and the number of groups in the m + 1th region is . The total number of transmissions (i.e., the first number) in the mth region is expressed as the sum of the repetition times corresponding to each group in this region, then the first number ; the total number of transmissions (i.e., the second number) in the m + 1th region is expressed as the sum of the repetition times corresponding to each group in this region, then the second number .

[0093] It can be understood that the distances of different groups from the network device may be different, and the terminal devices within the same group may be approximately the same distance from the network device. Therefore, in the embodiments of the present application, the network device determines the repetition times required to send the low-power wake-up signal to the i th group according to the first channel state information. It can also be understood that the network device calculates according to the first channel state information the repetition times required to send the low-power wake-up signal to different groups at different distances.

[0094] In one implementation, to calculate the maximum repetition times of the LP-WUS, the network device can calculate the interruption probability of sending the low-power wake-up signal to the terminal devices in the ith group according to the first channel state information. It can be understood that the interruption probability refers to the probability of the failure of sending the low-power wake-up signal, that is, the probability that the terminal device does not receive the low-power wake-up signal. Then the network device determines the repetition times according to the interruption probability, where the repetition times satisfy the following conditions: the first probability determined by sending the low-power wake-up signal according to the repetition times at the interruption probability is greater than or equal to the preset threshold. For example: , represents the failure probability of sending the low-power wake-up signal according to the repetition times at the interruption probability , then is the success probability (i.e., the first probability), and 95% is the preset threshold. If the success probability is greater than this preset threshold, it means that sending LP-WUS according to this number of repetitions can succeed under the current channel state.

[0095] Exemplarily, the outage probability satisfies the following formula:

[0096] where represents the outage probability, represents the reference outage probability under the second signal-to-interference-plus-noise ratio and the second block error rate , represents the first signal-to-interference-plus-noise ratio, represents the first block error rate, represents the third signal-to-interference-plus-noise ratio, represents the third block error rate, and respectively represent weight coefficients, and their values can be 0.5, which are used to balance the influence of SINR and BLER on the outage probability. Exemplarily, the second signal-to-interference-plus-noise ratio is less than or equal to the first threshold, the second block error rate is greater than or equal to the second threshold, the third signal-to-interference-plus-noise ratio is greater than or equal to the third threshold, the third block error rate is less than or equal to the fourth threshold, the first threshold is less than the third threshold, and the second threshold is greater than the fourth threshold. Where and , as well as and are respectively preset channel state information, the first threshold and the second threshold, and the third threshold and the fourth threshold are preset thresholds. and represent the metrics corresponding to the worst channel state, that is, the first threshold and the second threshold are parameters for measuring the worst channel state. and represent the metrics corresponding to the best channel state, that is, the third threshold and the fourth threshold are parameters for measuring the best channel state. For example, the first threshold is less than or equal to 5 db, the second threshold is greater than or equal to 10%, the third threshold is greater than or equal to 25 db, and the fourth threshold is less than or equal to 1%.

[0097] Please refer to Figure 4 , Figure 4 which is a schematic diagram of the number of repetitions corresponding to M regions provided by an embodiment of the present application. Taking M equal to 4 as an example, from Figure 4It can be seen that with the location of the network device 110 as the center, the coverage area of the wireless network is divided into 4 concentric circles. These 4 concentric circles are a set of circles with the same center but different radii, namely the first area, the second area, the third area, and the fourth area. Among them, the relationship between the radius R1 of the first area, the radius R2 of the second area, the radius R3 of the third area, and the radius R4 of the fourth area is: R1 < R2 < R3 < R4. Then, the network device counts the number of packets in each area. For example, the first area includes three packets, namely packet 4, packet 7, and packet 8; the second area includes four packets, namely packet 4, packet 3, packet 7, and packet 8; the third area includes six packets, namely packet 3, packet 4, packet 5, packet 6, packet 7, and packet 8; the fourth area includes eight packets, namely packet 1, packet 2, packet 3, packet 4, packet 5, packet 6, packet 7, and packet 8. After determining the LP-WUS repetition times corresponding to each packet, the total number of LP-WUS transmissions required for each area can be further determined. Assume that the LP-WUS repetition times corresponding to packet 1 and packet 2 are 10 times, the LP-WUS repetition times corresponding to packet 6 and packet 5 are 5 times, the LP-WUS repetition times corresponding to packet 3 are 3 times, and the LP-WUS repetition times corresponding to packet 4, packet 7, and packet 8 are 1 time. Then, it can be calculated that the LP-WUS repetition times corresponding to the first area are 3 times, the LP-WUS repetition times corresponding to the second area are 6 times, the LP-WUS repetition times corresponding to the third area are 16 times, and the LP-WUS repetition times corresponding to the fourth area are 36 times. Therefore, the first total number includes but is not limited to: 3 times corresponding to the first area, 6 times corresponding to the second area, 16 times corresponding to the third area, and 36 times corresponding to the fourth area.

[0098] Step S303: The network device determines the first coverage area according to the first total number and the network load.

[0099] Exemplarily, in order to maximize the terminal energy-saving effect while ensuring the service resource requirements, it is necessary to combine the current network load and the LP-WUS repetition times corresponding to each of the M areas to determine the areas (i.e., the first coverage area) that can meet the LP-WUS repetition times while satisfying the data transmission of the service from the M areas. That is, the first coverage area is the area that meets the load requirements among the M areas.

[0100] In one implementation, the network device calculates the maximum number of times (i.e., the first number) that LP-WUS can be transmitted under the condition of meeting the data transmission of the current service based on the current scheduling resources, and then determines the areas (i.e., the first coverage area) that can meet the maximum number from the M areas. That is, the LP-WUS repetition times corresponding to the first coverage area meet the maximum number.

[0101] Exemplarily, the network device calculates (determines) the first number (i.e., the maximum number of times LP-WUS can be transmitted) based on the transmission period T of the network device, the transmission occupancy duration t of the service, and the single occupancy duration of the low-power wake-up signal That is, the transmission period T needs to meet the current load requirements (including the data transmission duration of the service and the total transmission duration of LP-WUS). Therefore , and thus the first number L satisfies the following conditions: . The area identifier indicated by the determined first coverage range satisfies the following conditions: , where represents the second number, represents the third number, represents the first number. Among them, the first total number includes the first number and the second number. The first number is used to indicate the number of times the network device needs to send the low-power wake-up signal to the terminal device in the m-th area, and the second number is used to indicate the second number of times the network device needs to send the low-power wake-up signal to the terminal device in the (m + 1)-th area. The m-th area and the (m + 1)-th area belong to M areas, and m is a positive integer. That is, if there exists m such that holds, then the maximum LP-WUS area that the network device can currently cover is the m-th area. For example, please continue to refer to Figure 4 , assuming that the transmission period of the network device is 100 ms, the current data transmission service occupancy duration is 85 ms, and the single transmission occupancy duration of LP-WUS is 0.5 ms, then the maximum number of times LP-WUS can be transmitted currently is: . Please continue to refer to Figure 4 , the first total number includes but is not limited to: 3 times corresponding to the first area, 6 times corresponding to the second area, 16 times corresponding to the third area, and 36 times corresponding to the fourth area. Then the satisfying m is 3. Therefore, the first coverage area is the third area.

[0102] In a possible implementation manner, when the total transmission duration of the network device is greater than the transmission period T , the terminal device can continue to execute any of the steps S301 to S303 to update the first coverage area.

[0103] In another possible implementation manner, the terminal device can execute any of the steps S301 to S304 at a preset frequency to update the first coverage area to ensure the continuous optimization of the LP-WUS coverage area.

[0104] Step S304: The network device sends a first low-power wake-up signal to the first terminal device. Correspondingly, the first terminal device receives the first low-power wake-up signal.

[0105] Among them, the first terminal device is located within the first coverage area. That is, the terminal device located within the first coverage area can receive the first low-power wake-up signal. For example, please continue to refer to Figure 4 , assuming that the first coverage area is the third area, then the terminal devices corresponding to packet 6, packet 5, packet 3, packet 4, packet 7, and packet 8 within the third area can receive the first low-power wake-up signal.

[0106] In a possible implementation manner, when the first low-power wake-up signal is used to indicate waking up the main receiver, the first terminal device turns on the main receiver; when the first low-power wake-up signal is used to indicate not waking up the main receiver, the first terminal device keeps the main receiver closed.

[0107] Step S305 (optional): The network device sends first indication information to the second terminal device. Correspondingly, the second terminal device receives the first indication information.

[0108] In one implementation, the second terminal device belongs to the terminal devices within the second coverage range, and the second coverage range is the range within the coverage range of the network device except the first coverage range. The first indication information is used to indicate that the terminal devices within the second coverage range exit the LP-WUS mode and fallback to the main receiver mode. That is, the terminal devices within the second coverage range (such as the second terminal device) respond to the first indication information to exit the LP-WUS mode, turn on the main receiver, and perform signal monitoring on the paging occasion through the main receiver in the idle state or non-active state.

[0109] For example, please continue to refer to Figure 4 , assuming that the first coverage area is the third area, then the second coverage range is the fourth area, that is, the terminal devices corresponding to packet 1 and packet 2 within the second area can receive the first indication information.

[0110] In another implementation, the network device sends second indication information to the terminal devices in the cell to update the current coverage range of LP-WUS (i.e., the first coverage range).

[0111] It should be understood that each step in the above method embodiments provided in this application can be completed by the integrated logic circuit in the hardware of the processor or the instructions in software form. The method steps disclosed in combination with the embodiments of this application can be directly implemented by the execution of the hardware processor, or implemented by the combination of the hardware and software modules in the processor.

[0112] This application divides the functional modules of the communication device according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in this application is illustrative, only a logical function division, and there may be other division methods in actual implementation. The following will be combined with Figure 5 and Figure 6 to describe in detail the communication device of the embodiments of this application.

[0113] Figure 5 FIG. is a schematic structural diagram of a communication device provided by an embodiment of this application. As Figure 5 shown, the communication device 50 includes a processing module 501 and a transceiver module 502. The transceiver module 502 can implement corresponding communication functions. For example, the transceiver module 502 can also be referred to as an interface, a communication interface, or a communication module, etc. The processing module 501 is used for data processing, such as generating information operations, etc. The transceiver module 502 can have its own control logic or execute corresponding operations under the control of the processing module 501. In some embodiments of this application, the communication device can be used to execute the actions performed by the sending end in the above method embodiments. For example, the sending end can be the device itself or a chip or functional module that can be configured in the device, etc. The transceiver module 502 is used to execute the operations related to information transmission and reception in the above method embodiments, and the processing module 501 is used to execute the operations related to data processing in the above method embodiments. The processing module 501 can execute corresponding operations by calling a computer program or by corresponding hardware circuits. The transceiver module 502 can execute transceiver operations independently or execute corresponding transceiver operations under the control of the processing module 501.

[0114] Exemplarily, Figure 5 the communication device shown can be a network device or a component in a network device. The processing module 501 and the transceiver module 502 in the communication device can perform the following operations respectively: The transceiver module 502 is used to receive first information, where the first information includes first channel state information; The processing module 501 is used to determine a first total number according to the first channel state information, where the first total number includes the number of times required for the network device to send low-power wake-up signals LP-WUS to each terminal device in each of the M regions respectively. The M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; The processing module 501 is further used to determine a first coverage range according to the first total number and the network load, where the first coverage range is the regions among the M regions that meet the load requirements; The transceiver module 502 is further configured to send a first low-power wake-up signal to a first terminal device, where the first terminal device is a terminal device within a first coverage area.

[0115] In a possible implementation manner of the first aspect, the processing module 501 is specifically configured to: determine, according to the first channel state information, the number of repetitions required to send a low-power wake-up signal to the i th packet, where the i th packet includes at least one terminal device, the i th packet belongs to any one of I packets, and the I packets include packets obtained by dividing terminal devices within the coverage area by the network device, i is less than or equal to I, i and I is a positive integer; respectively count the number of packets in each of the M regions; determine a first total number according to the number of packets and the number of repetitions.

[0116] In a possible implementation manner, the processing module 501 is specifically configured to: calculate, according to the first channel state information, an interruption probability of sending a low-power wake-up signal to the i-th packet; determine the number of repetitions according to the interruption probability, where the number of repetitions satisfies the following condition: a first probability determined by sending the low-power wake-up signal according to the number of repetitions at the interruption probability is greater than or equal to a preset threshold.

[0117] In a possible implementation manner, the first channel state information includes a first signal-to-interference-plus-noise ratio and a first block error rate, and the interruption probability satisfies the following formula:

[0118] where, represents the interruption probability, represents a reference interruption probability at a second signal-to-interference-plus-noise ratio and a second block error rate , represents the first signal-to-interference-plus-noise ratio, represents the first block error rate, represents a third signal-to-interference-plus-noise ratio, represents a third block error rate, and respectively represent weight coefficients, the second signal-to-interference-plus-noise ratio is less than or equal to a first threshold, the second block error rate is greater than or equal to a second threshold, the third signal-to-interference-plus-noise ratio is greater than or equal to a third threshold, the third block error rate is less than or equal to a fourth threshold, the first threshold is less than the third threshold, and the second threshold is greater than the fourth threshold.

[0119] In a possible implementation, the processing module 501 is specifically configured to: according to the transmission period of the network device T , the transmission occupancy duration of the service t and the single occupancy duration of the low-power wake-up signal to determine a first number, where the first number is used to indicate the maximum number of times the network device sends a low-power wake-up signal under network load, and the first number L satisfies the following conditions: ; The area identifier indicated by the first coverage satisfies the following conditions: , where represents a second number, represents a third number, represents the first number, the first total number includes the first number and the second number, and the first number is used to indicate the number of times required for the network device to send a low-power wake-up signal to the terminal device in the m area, and the second number is used to indicate the second number of times required for the network device to send a low-power wake-up signal to the terminal device in the m +1 area, the m area and the m +1 area belong to M areas, m is a positive integer.

[0120] In a possible implementation, the processing module 501 is specifically configured to: when the total transmission duration of the network device is greater than the transmission period, update the first coverage, where the total transmission duration includes: the transmission occupancy duration of the service t and the first total duration, and the first total duration is used to indicate the duration required to send a low-power wake-up signal to the terminal device in the area.

[0121] In a possible implementation, the transceiver module 502 is used to send first indication information to a second terminal device, where the second terminal device belongs to the terminal devices within the second coverage, and the second coverage is the range within the coverage of the network device except the first coverage, and the first indication information is used to instruct the terminal devices within the second coverage to exit the LP-WUS mode.

[0122] In a possible implementation, the first low-power wake-up signal is used to indicate waking up the main receiver of the terminal device within the first coverage or to indicate not waking up the main receiver of the terminal device within the first coverage.

[0123] Multiplex Figure 5 , in some other embodiments of the present application, exemplarily, Figure 5The communication device shown may be a first terminal device or a component of the first terminal device. The processing module 501 and the transceiver module 502 in the communication device may perform the following operations respectively: The processing module 501 is used to generate first information; The transceiver module 502 is used to send the first information, where the first information includes first channel state information, and the first channel state information is used to determine a first total number of times. The first total number of times includes the number of times required for the network device to send low-power wake-up signals LP-WUS to the terminal devices in each of the M regions respectively. The M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; The transceiver module 502 is further used to receive a first low-power wake-up signal, where the first terminal device is within a first coverage range. The first coverage range is determined according to the first total number of times and the network load, and the first coverage range is the region that meets the load requirement among the M regions.

[0124] In a possible implementation manner, when the first low-power wake-up signal is used to indicate waking up the main receiver, the processing module 501 is further used to turn on the main receiver; When the first low-power wake-up signal is used to indicate not waking up the main receiver, the processing module 501 is further used to keep the main receiver turned off.

[0125] Multiplexing Figure 5 , in some other embodiments of the present application, by way of example, Figure 5 The communication device shown may be a first terminal device or a component of the first terminal device. The processing module 501 and the transceiver module 502 in the communication device may perform the following operations respectively: The processing module 501 is used to generate first information; The transceiver module 502 is used to send the first information, where the first information includes first channel state information, and the first channel state information is used to determine a first total number of times. The first total number of times includes the number of times required for the network device to send low-power wake-up signals LP-WUS to the terminal devices in each of the M regions respectively. The M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; The transceiver module 502 is used to receive first indication information, where the first indication information is used to indicate that the terminal devices within a second coverage range exit the LP-WUS mode. The second terminal device is within the second coverage range, and the second coverage range is the coverage range of the network device except the first coverage range. The terminal devices within the first coverage range are used to receive the first low-power wake-up signal. The first coverage range is determined according to the first total number of times and the network load, and the first coverage range is the region that meets the load requirement among the M regions.

[0126] In a possible implementation, the second terminal device includes a main receiver, and the method further includes: The processing module 501 is further configured to turn on the main receiver, and monitor signals during the paging occasion through the main receiver.

[0127] The specific descriptions of the transceiver module and the processing module shown in the above embodiments are only examples. For the specific functions or steps executed by the transceiver module and the processing module, reference may be made to the above method embodiments, which will not be elaborated here.

[0128] The communication device of the embodiments of the present application has been introduced above. The following introduces possible product forms of the communication device. Any product in any form that has the functions of the above Figure 5 communication device falls within the protection scope of the embodiments of the present application.

[0129] The following introduction is only for example, and does not limit the product form of the communication device of the embodiments of the present application to this.

[0130] In a possible implementation manner, Figure 5 In the shown communication device, the processing module 501 may be one or more processors, the transceiver module 502 may be a transceiver, or the transceiver module 502 may also be a sending module and a receiving module. The sending module may be a transmitter, and the receiving module may be a receiver. The sending module and the receiving module are integrated in one device, such as a transceiver. In the embodiments of the present application, the processor and the transceiver may be coupled, etc. The connection manner between the processor and the transceiver is not limited in the embodiments of the present application. During the execution of the above method, the process of sending information in the above method may be the process of outputting the above information by the processor. When outputting the above information, the processor outputs the above information to the transceiver so that the transceiver can transmit it. After the above information is output by the processor, other processing may be required before it reaches the transceiver. Similarly, the process of receiving information in the above method may be the process of the processor receiving the input above information. When the processor receives the input information, the transceiver receives the above information and inputs it to the processor. In addition, after the transceiver receives the above information, the above information may need to be processed otherwise before it is input to the processor.

[0131] Figure 6 is a schematic structural diagram of another communication device provided by the embodiments of the present application. As Figure 6 shown, the communication device 60 includes one or more processors 620 and a transceiver 610. Exemplarily, the transceiver 610 is configured to execute the functions or steps implemented by the transceiver module 502 as Figure 5 shown, and the processor 620 is configured to execute as Figure 5The functions or steps implemented by the processing module 501 shown. The transceiver 610 may have its own processing logic or may perform related operations under the control of the processor 620. Optionally, the communication device 60 may further include a memory 630, which may store computer programs. The processor 620 executes some operations by calling the computer programs in the memory 630, such as the operation of generating a first registration request, and the operation of generating a first inventory response, etc. For specific descriptions of the processor 620 and the transceiver 610, reference can be made to Figure 5 or the method embodiments shown above, which will not be elaborated here. In the above respective embodiments, the descriptions of related steps and information, etc. can be referred to the introductions in the above method embodiments, and will not be elaborated one by one here. In Figure 6 In each implementation manner of the communication device shown, the transceiver may include a receiver and a transmitter. The receiver is used to perform the receiving function (or operation), and the transmitter is used to perform the transmitting function (or operation). And the transceiver is used to communicate with other devices / devices through a transmission medium.

[0132] Optionally, the communication device 60 may be a chip or an integrated circuit in specific implementation.

[0133] This application also provides a chip system, which includes at least one processor for implementing the functions involved in the methods executed by the communication node, or the access network device, or the core network device in any one of the above embodiments.

[0134] In a possible design, the chip system further includes a memory for storing program instructions and data. The memory is located inside or outside the above-mentioned processor.

[0135] The chip system may be composed of chips or may include chips and other discrete devices.

[0136] Optionally, the processor in the chip system may be one or more. The processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc. When implemented by software, the processor may be a general-purpose processor that implements by reading the software code stored in the memory.

[0137] Optionally, the memory in the chip system may also be one or more. The memory may be integrated with the processor or may be separately arranged from the processor, which is not limited in the embodiments of the present application. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip or may be separately arranged on different chips. The embodiments of the present application do not make specific limitations on the type of the memory and the setting manner of the memory and the processor.

[0138] Exemplarily, the chip system may be a field programmable gate array (FPGA), may be an application specific integrated circuit (ASIC), may also be a system on chip (SoC), may also be a central processing unit (CPU), may also be a network processor (NP), may also be a digital signal processing circuit (DSP), may also be a microcontroller unit (MCU), may also be a programmable logic device (PLD), or other integrated chips.

[0139] The present application also provides a computer program product, which includes: a computer program (which may also be referred to as code or instruction). When the computer program is run, it causes a computer to execute the method performed by a communication node, or an access network device, or a core network device in any one of the above embodiments.

[0140] The present application also provides a computer-readable storage medium, which stores a computer program (which may also be referred to as code or instruction). When the computer program is run, it causes a computer to execute the method performed by a communication node, or an access network device, or a core network device in any one of the above embodiments.

[0141] The various embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0142] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable devices. The computer program or instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired or wireless manner. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disc; or it may be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both volatile and non-volatile storage media.

[0143] In various embodiments of the present application, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0144] In the description of the present application, terms such as "first", "second", "S301", or "S302" are only used for the purpose of distinguishing descriptions and facilitating the context of the text. The different sequence numbers themselves do not have specific technical meanings, and should not be understood as indicating or implying relative importance, nor as indicating or implying the execution order of operations. The execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that, The method is applied to a network device, and the method includes: Receiving first information, where the first information includes first channel state information; Determining a first total number according to the first channel state information, where the first total number includes the number of times required for the network device to send a low-power wake-up signal LP-WUS to each terminal device in each of M regions, the M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; Determining a first coverage range according to the first total number and network load, where the first coverage range is the regions among the M regions that meet the load requirements; Sending a first low-power wake-up signal to a first terminal device, where the first terminal device is a terminal device within the first coverage range.

2. The method according to claim 1, characterized in that The determining the first total number according to the first channel state information includes: Determine the number of repetitions required to send the low-power wake-up signal to the i th packet according to the first channel state information, where the i th packet includes at least one terminal device, and the i th packet belongs to any one of the I packets, and the I packets include the packets obtained by the network device dividing the terminal devices within the coverage area, i is less than or equal to I, i and I is a positive integer; Respectively counting the number of packets in each of the M regions; Determining the first total number according to the number of packets and the number of repetitions.

3. The method according to claim 2, wherein The determining the number of repetitions required to send the low-power wake-up signal to the i-th packet according to the first channel state information includes: Calculating an interruption probability of sending the low-power wake-up signal to the i-th packet according to the first channel state information; Determining the number of repetitions according to the interruption probability, where the number of repetitions satisfies the following condition: a first probability determined by sending the low-power wake-up signal according to the number of repetitions at the interruption probability is greater than or equal to a preset threshold.

4. The method according to claim 3, wherein The first channel state information includes a first signal-to-interference-plus-noise ratio and a first block error rate, and the interruption probability satisfies the following formula: Wherein, represents the interruption probability; represents the reference interruption probability under the second signal-to-interference-plus-noise ratio and the second block error rate; represents the first signal-to-interference-plus-noise ratio; represents the first block error rate; represents the third signal-to-interference-plus-noise ratio; represents the third block error rate; and respectively represent weight coefficients, the second signal-to-interference-plus-noise ratio is less than or equal to a first threshold, the second block error rate is greater than or equal to a second threshold, the third signal-to-interference-plus-noise ratio is greater than or equal to a third threshold, the third block error rate is less than or equal to a fourth threshold, the first threshold is less than the third threshold, and the second threshold is greater than the fourth threshold.​ 5. The method according to any one of claims 1 to 4, characterized in that The determining the first coverage range according to the first total number and network load includes: According to the transmission period of the network device T , the transmission occupancy duration of the service t and the single occupancy duration of the low-power wake-up signal to determine a first number, where the first number is used to indicate the maximum number of times the network device sends the low-power wake-up signal under the network load, and the first number L satisfies the following conditions: ; The area identifier indicated by the first coverage range satisfies the following conditions: , where represents the second number of times, represents the third number of times, represents the first number of times. The first total number of times includes the first number of times and the second number of times. The first number of times is used to indicate the number of times required for the network device to send a low-power wake-up signal to the terminal devices in the m area. The second number of times is used to indicate the second number of times required for the network device to send the low-power wake-up signal to the terminal devices in the m +1 area. The m area and the m +1 area belong to the M areas, m is a positive integer.

6. The method according to claim 5, wherein, The method further includes: When the total transmission duration of the network device is greater than the transmission period, update the first coverage area, where the total transmission duration includes: the transmission occupancy duration of the service t and the first total duration, the first total duration is used to indicate the duration required to send the low-power wake-up signal to the terminal devices in the m area.

7. The method according to claim 1, characterized in that, The method further includes: Sending first indication information to a second terminal device, where the second terminal device belongs to a second coverage range, the second coverage range is the range within the coverage range of the network device except the first coverage range, and the first indication information is used to instruct the terminal devices within the second coverage range to exit the LP-WUS mode.

8. The method according to claim 1, wherein The first low-power wake-up signal is used to instruct to wake up the main receiver of the terminal devices within the first coverage range or to instruct not to wake up the main receiver of the terminal devices within the first coverage range.

9. A communication method, characterized in that, The method is applied to a first terminal device, and the method includes: Sending first information, where the first information includes first channel state information, the first channel state information is used to determine a first total number, the first total number includes the number of times required for a network device to send a low-power wake-up signal LP-WUS to each terminal device in each of M regions, the M regions include the regions after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; The receiver receives a first low-power wake-up signal, where the first terminal device is within a first coverage area, and the first coverage area is determined according to the first total number and network load, and the first coverage area is an area that meets the load requirements among the M areas.

10. The method according to claim 9, wherein When the first low-power wake-up signal is used to indicate waking up the main receiver, turn on the main receiver; When the first low-power wake-up signal is used to indicate not waking up the main receiver, keep the main receiver turned off.

11. A communication method, characterized in that, The method is applied to a second terminal device, and the method includes: Send first information, where the first information includes first channel state information, and the first channel state information is used to determine a first total number, and the first total number includes the number of times required for the network device to send low-power wake-up signals (LP-WUS) to terminal devices in each of the M areas respectively. The M areas include the areas after the network device divides the coverage area, and M is a positive integer greater than or equal to 2; Receive first indication information, where the first indication information is used to indicate that the terminal device within the second coverage area exits the LP-WUS mode. The second terminal device is within the second coverage area, and the second coverage area is the coverage area of the network device except the first coverage area. The terminal device within the first coverage area is used to receive the first low-power wake-up signal, and the first coverage area is determined according to the first total number and network load, and the first coverage area is an area that meets the load requirements among the M areas.

12. The method according to claim 11, wherein The second terminal device includes a main receiver, and the method further includes: Turn on the main receiver, and perform signal monitoring on the paging occasion through the main receiver.

13. A communication device, characterized in that, Wherein: The communication device includes a module for executing the method according to any one of claims 1 to 8; or, a module for executing the method according to claim 9 or 10; or, a module for executing the method according to claim 11 or 12.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, and when the computer program is executed, the method according to any one of claims 1 to 12 is executed.

15. A communication system, characterized in that, Including the device according to claim 13.

16. A computer program product containing instructions, characterized in that, When the computer program product runs on an electronic device, the electronic device is caused to execute the method according to any one of claims 1 to 12.

17. A chip system, characterized in that, Including a processor; The processor is used to execute computer execution instructions, so that the device equipped with the chip system executes the method according to any one of claims 1 to 12.

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