A communication method and apparatus

Abstract

A communication method and device, the method comprising: determining, by an access network device, first frequency domain information; determining, by a terminal device, the first frequency domain information; transmitting, by the access network device, a first message to the terminal device on a resource corresponding to the first frequency domain information; and receiving, by the terminal device, the first message from the access network device on the resource corresponding to the first frequency domain information, wherein the first frequency domain information is frequency domain information corresponding to first demand information in a preset correspondence, and the first demand information is used to indicate resource demand of the terminal device when transmitting a message with the access network device. Through the technical solution, the problem that a terminal device cannot adapt to service characteristics based on a random principle to determine a carrier for receiving a page can be solved.

Description

[0001] This application claims priority to PCT patent application filed on October 15, 2020, with application number PCT / CN2020 / 121270 and entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of wireless communication technology, and in particular to a communication method and apparatus. Background Technology

[0003] In existing narrowband Internet of Things (NB-IoT) systems, terminal devices determine the carrier to receive paging messages based on random principles (such as the device's identifier). Since carriers in different frequency domains have varying channel quality, for a terminal device to successfully receive paging information from carriers in different frequency domains, it needs to determine the maximum number of repetitions required to receive the corresponding carrier for each frequency domain and then receive the paging information on that carrier based on the maximum number of repetitions.

[0004] Terminal devices with different service characteristics may be in different coverage situations. For example, terminal device 1 is used to implement terrestrial services, and because it is deployed on the ground, the coverage is good. Terminal device 2 is used to implement underground services, and because it is deployed underground, the coverage is poor. The maximum number of repetitions required for paging terminal device 2 with carriers in the same frequency domain is greater than the maximum number of repetitions required for paging terminal device 1. In the prior art, the method by which terminal devices determine the carrier for receiving paging based on random principles is not applicable to the service characteristics of the terminal devices. Summary of the Invention

[0005] This application provides a communication method and apparatus to address the problem that the method of determining the frequency domain resources for receiving paging based on random principles by terminal devices is not applicable to the service characteristics of terminal devices.

[0006] In a first aspect, this application provides a communication method that can be executed by an access network device or a module in the access network device, such as a chip.

[0007] In one possible implementation, the method includes: determining first frequency domain information, wherein the first frequency domain information is frequency domain information corresponding to first requirement information in a preset correspondence, and the first requirement information is used to indicate resource requirements when transmitting messages with a terminal device; and sending a first message to the terminal device on the resource corresponding to the first frequency domain information. In this implementation, the resource corresponding to the first frequency domain information can satisfy the first requirement information, and the access network device and the terminal device transmit the first message on the resource corresponding to the first frequency domain information, avoiding the problem of mismatch between the frequency domain resources determined by the access network device and the terminal device and the service characteristics of the terminal device.

[0008] In one possible implementation, the first message is used to page the terminal device. In this implementation, the access network device pages the terminal device on the resources corresponding to the first frequency domain information. The first message is downlink control information (DCI) or a paging message for paging. The resources corresponding to the first frequency domain information can meet the first requirement information. Transmitting the paging downlink control information or paging message on the resources corresponding to the first frequency domain information is suitable for the service characteristics of the terminal device, helps improve the success rate of the access network device paging the terminal device, and avoids resource waste or large delays when the terminal device receives the first message.

[0009] In one possible implementation, the first requirement information is requirement information from the core network device, the terminal device, or the first access network device.

[0010] In one possible implementation, the first requirement information is a first requirement level from the core network equipment, and the first frequency domain information is the frequency domain information corresponding to the first requirement level in the preset correspondence.

[0011] In one possible implementation, the first requirement level includes one or more of a latency requirement level, a coverage requirement level, and a paging probability level. In this implementation, based on the service characteristics of the terminal device, the terminal device's requirements for one or more of latency, coverage, and paging probability are determined as the first requirement information. When the access network device and the terminal device determine the first frequency domain information based on the first requirement information and a preset correspondence, the determined first frequency domain information is better suited for transmitting the first message; that is, the determined first frequency domain information is more applicable to the service characteristics of the terminal device.

[0012] In one possible implementation, the first requirement information is a first requirement parameter from the terminal device, and the first frequency domain information is the frequency domain information of the corresponding transmission parameters in the preset correspondence that satisfy the first requirement parameter.

[0013] In one possible implementation, the transmission parameters include M reference transmission parameters, each of which corresponds to one of the M priorities. The N reference transmission parameters corresponding to the first frequency domain information satisfy the first requirement parameters. The N priorities corresponding to the N reference transmission parameters are the top N priorities of the M priorities in descending order, where N is less than or equal to M and N is a positive integer.

[0014] In one possible implementation, the first requirement parameter includes one or more of the following parameters: maximum repetition count, reference signal received power (RSRP), coverage enhancement level, discontinuous reception (DRX) period, wake-up signal (WUS) enable flag, paging timing density, and power boost capability. In this implementation, the service characteristics of the terminal devices differ, resulting in different channel quality between them and the access network devices. That is, the service characteristics of the terminal devices are essentially related to their channel quality. Based on the channel quality of the terminal devices, requirement parameters associated with their channel quality are determined. These requirement parameters serve as first requirement information. When the access network devices and terminal devices determine first frequency domain information based on the first requirement information and a preset correspondence, the determined first frequency domain information is better suited for transmitting the first message; that is, the determined first frequency domain information is more applicable to the service characteristics of the terminal devices.

[0015] In one possible implementation, the method further includes: receiving first request information from the terminal device, the first request information including first indication information, the first indication information being used to update the first requirement parameter; and sending a second requirement parameter to the terminal device, the second requirement parameter being the updated first requirement parameter. Optionally, the first indication information is the second requirement parameter. In this implementation, the terminal device can send first request information to the access network device, the first request information instructing the access network device to update the first requirement parameter. The updated first requirement parameter (second requirement parameter) can more accurately characterize the service characteristics or channel quality of the terminal device. When the access network device and the terminal device determine the first frequency domain information based on the updated first requirement parameter and a preset correspondence, the determined first frequency domain information can be better used to transmit the first message.

[0016] In one possible implementation, the terminal device is in a radio resource control (RRC) inactive state, and the context of the terminal device is stored in a first access network device. The first demand information is demand information from the first access network device, including: requesting the context of the terminal device from the first access network device, wherein the context of the terminal device includes the first demand information; and receiving the context of the terminal device from the first access network device. In this implementation, since the terminal device is in an RRC inactive state, if the terminal device moves into the coverage area of ​​the second access network device, the second access network device can request the context of the terminal device containing the first demand information from the first access network device. This helps the second access network device determine first frequency domain information applicable to the terminal device's service characteristics or channel quality based on the first demand information.

[0017] In one possible implementation, the transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability; sending a first message to the terminal device on the resources corresponding to the first frequency domain information includes: the access network device sending the first message to the terminal device on the frequency domain resources included in the first frequency domain information using the transmission parameters corresponding to the frequency domain resources.

[0018] In one possible implementation, the method further includes sending the preset correspondence to the terminal device.

[0019] Secondly, this application provides a communication method that can be executed by a terminal device or a module in the terminal device, such as a chip.

[0020] In one possible implementation, the method includes: determining first frequency domain information, wherein the first frequency domain information is frequency domain information corresponding to first demand information in a preset correspondence, and the first demand information is used to indicate resource requirements when transmitting messages with the access network device; and the terminal device receives a first message from the access network device on the resources corresponding to the first frequency domain information.

[0021] In one possible implementation, the first message is used to page the terminal device.

[0022] In one possible implementation, the first requirement information is a first requirement level from the core network equipment, and the first frequency domain information is the frequency domain information corresponding to the first requirement level in the preset correspondence.

[0023] In one possible implementation, the first requirement level includes one or more of a latency requirement level, a coverage requirement level, and a paging probability level.

[0024] In one possible implementation, the method further includes: sending a second request message to the core network device, the second request message including second indication information, the second indication information being used to update the first demand level; the terminal device receiving a second demand level from the core network device, the second demand level being the updated first demand level. Optionally, the second indication information is the second demand level.

[0025] In one possible implementation, the first requirement information is a first requirement parameter sent by the terminal device to the access network device, and the first frequency domain information is the frequency domain information of the corresponding transmission parameters in the preset correspondence that satisfy the first requirement parameter.

[0026] In one possible implementation, the transmission parameters include M reference transmission parameters, each of which corresponds to one of the M priorities. The N reference transmission parameters corresponding to the first frequency domain information conform to the first requirement parameters. The N priorities corresponding to the N reference transmission parameters are the first N priorities ordered from high to low among the M priorities, where N is less than or equal to M and N is a positive integer.

[0027] In one possible implementation, the first requirement parameter includes one or more of the following parameters: maximum number of repetitions, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0028] In one possible implementation, the method further includes: sending first request information to the access network device, the first request information including first indication information, the first indication information being used to update the first requirement parameter; the terminal device receiving a second requirement parameter from the access network device, the second requirement parameter being the updated first requirement parameter. Optionally, the first indication information is the second requirement parameter.

[0029] In one possible implementation, the transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability; receiving the first message from the access network device on the resource corresponding to the first frequency domain information includes: receiving the first message from the access network device on the frequency domain resource included in the first frequency domain information using the transmission parameters corresponding to the frequency domain resource.

[0030] In one possible implementation, the method further includes: receiving the preset correspondence from the access network device.

[0031] Thirdly, this application provides a communication method that can be executed by a core network device or a module in the core network device, such as a chip.

[0032] In one possible implementation, the method includes: determining first demand information, the first demand information being used to indicate the resource requirements when a terminal device transmits messages with an access network device; and sending the first demand information to the access network device.

[0033] In one possible implementation, the first demand information is a first demand level, which includes one or more of the following: latency demand level, coverage demand level, and paging probability level.

[0034] In one possible implementation, determining the first demand information includes: receiving a first demand level requested by the terminal device, determining the first demand level as the first demand information, and sending an acceptance message to the terminal device.

[0035] In one possible implementation, the method further includes: receiving second request information from the terminal device, the second request information including second indication information, the second indication information being used to update the first demand level; and sending a second demand level to the terminal device, the second demand level being the updated first demand level. Optionally, the second indication information is the second demand level.

[0036] In one possible implementation, the first requirement information is a first requirement parameter, which includes one or more of the following parameters: maximum number of repetitions, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0037] In one possible implementation, the context of the terminal device is stored in a first access network device, and the context of the terminal device stores a first requirement parameter. Determining the first requirement information includes: obtaining the first requirement parameter from the first access network device.

[0038] Fourthly, this application provides a communication method that can be executed by a terminal device or a module in the terminal device, such as a chip.

[0039] In one possible implementation, the method includes: determining a first channel state with an access network device; determining monitoring frequency domain information for monitoring a first message based on the first channel state; and receiving the first message from the access network device on the resource corresponding to the monitoring frequency domain information.

[0040] In one possible implementation, the first message is used to page the terminal device.

[0041] In the above technical solution, the terminal device determines the first channel state between itself and the access network device, and determines the monitoring frequency domain information used to monitor the first message based on the first channel state, thereby making it applicable to monitoring under different channel states, increasing the probability of successful monitoring and paging, and helping to enhance the robustness of the system.

[0042] In one possible implementation, determining the monitoring frequency domain information for monitoring the first message based on the first channel state includes: determining the monitoring frequency domain information as second frequency domain information when the first channel state satisfies a first condition, wherein the first condition includes: a first RSRP condition and / or a first count condition; the first RSRP condition includes any one or more of the following: the RSRP obtained by measuring the reference signal from the access network device is less than a first threshold; the change amplitude of the RSRP obtained by measuring the reference signal in the first time period is greater than a second threshold; the first count condition includes any one or more of the following: the maximum number of repetitions required to successfully decode the physical downlink control channel (PDCCH) is greater than a third threshold; the proportion of successfully decoded PDCCH in the second time period is less than a fourth threshold; the number of times the PDCCH is successfully decoded after the WUS indicates the existence of the first message in the third time period is less than a fifth threshold; the difference between the number of repetitions required to successfully decode the PDCCH in the first DRX period and the number of repetitions required to successfully decode the PDCCH in the second DRX period is greater than a sixth threshold, wherein the first DRX period is a DRX period preceding the second DRX period.

[0043] In the above technical solution, when the terminal device determines that the first channel state meets the first condition, it determines to use the second frequency domain information to listen to the first message. The first condition indicates a poor first channel state. In the case of a poor first channel state, the terminal device can listen to paging through the default frequency domain information (i.e., the second frequency domain information) pre-configured by the access network device. Correspondingly, the access network device can page the terminal device through the default frequency domain information, which helps to improve the probability of successfully paged the terminal device.

[0044] In one possible implementation, determining the monitoring frequency domain information for monitoring the first message based on the first channel state includes: determining the monitoring frequency domain information as third frequency domain information when the first channel state satisfies a second condition, wherein the second condition includes a second RSRP condition and / or a second count condition; the second RSRP condition includes: the RSRP obtained by measuring the reference signal from the access network device is greater than a seventh threshold; the second count condition includes any one or more of the following: the maximum number of repetitions required to successfully decode the PDCCH is less than an eighth threshold; the proportion of successfully decoded PDCCH in the fourth time period is greater than a ninth threshold; the number of times the PDCCH is successfully decoded after the WUS indicates the existence of the first message in the fifth time period is greater than a tenth threshold.

[0045] In one possible implementation, the third frequency domain information is determined within the first cell provided by the access network device based on first demand information and a preset correspondence. The first demand information is used to indicate the resource requirements when transmitting messages with the access network device.

[0046] In the above technical solution, when the terminal device determines that the first channel state meets the second condition, it determines to use the third frequency domain information to listen to the first message. The second condition indicates that the first channel state is good. The terminal device can choose to listen to the first message through the third frequency information. The third frequency domain information is granular to the terminal device. Different terminal devices have different third frequency domain information, which helps to improve the utilization rate of frequency domain information in the communication system.

[0047] In one possible implementation, after receiving the first message from the access network device on the resource corresponding to the monitoring frequency domain information, the method further includes: reselecting from the second cell to the first cell; and receiving the first message from the access network device on the resource corresponding to the third frequency domain information when the second channel state with the access network device satisfies the second condition.

[0048] In the above technical solution, when the terminal device moves from the first cell provided by the original access network device to another cell, the channel state between the terminal device and the access network device may change. For example, if the first condition is met, the access network device can page the terminal device through the second frequency domain information. When the terminal device moves to the first cell again, the channel state between the terminal device and the access network device meets the second condition, and the terminal device uses the third frequency domain information again to receive the first message from the access network device.

[0049] Fifthly, this application provides a communication method that can be executed by an access network device or a module in the access network device, such as a chip.

[0050] In one possible implementation, the method includes: determining monitoring frequency domain information for sending a first message when the third channel state between the terminal device and the terminal device satisfies a third condition; and sending the first message to the terminal device on the resource corresponding to the monitoring frequency domain information.

[0051] In one possible implementation, the method includes: the first message being used to page a terminal device.

[0052] In one possible implementation, the method includes: the third channel state with the terminal device satisfies a third condition including any one or more of the following: obtaining third indication information of the terminal device from the core network device, the third indication information being used to indicate that the terminal device is in a stationary state; obtaining fourth indication information of the terminal device from the terminal device, the fourth indication information being used to indicate that the terminal device is in a stationary state; and the change in the third channel state is less than an eleventh threshold value during a sixth time period.

[0053] In the above technical solution, if the access network device determines that the terminal device is stationary or that the channel state between the access network device and the terminal device changes little, it can determine that a fixed frequency domain can be used to page the terminal device. For example, a third frequency domain information can be determined based on the first requirement information and a preset correspondence, and the terminal device can be paged through the third frequency domain information. Alternatively, a default frequency domain information (i.e., the second frequency domain information) can be assigned to the terminal device, and the terminal device can be paged through the second frequency domain information.

[0054] Sixthly, embodiments of this application provide a communication device that has the function of implementing the access network device in the first aspect or any possible implementation of the first aspect, or in the fifth aspect or any possible implementation of the fifth aspect. The device can be an access network device or a chip included in the access network device.

[0055] The device may also have the functions of a terminal device in the second aspect or any possible implementation of the second aspect, or in the fourth aspect or any possible implementation of the fourth aspect. The device may be a terminal device or a chip included in the terminal device.

[0056] The device may also have the function of implementing the core network equipment in the third aspect or any possible implementation of the third aspect. The device may be the core network equipment or a chip included in the core network equipment.

[0057] The functions of the above-mentioned device can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules, units or means corresponding to the above-mentioned functions.

[0058] In one possible implementation, the device includes a processing unit and a communication unit. The processing unit is configured to support the device in performing the functions of an access network device in the first aspect or any implementation thereof, or the fifth aspect or any possible implementation thereof, or in performing the functions of a terminal device in the second aspect or any implementation thereof, or the fourth aspect or any possible implementation thereof, or in performing the functions of a core network device in the third aspect or any implementation thereof. The communication unit supports communication between the device and other communication devices. For example, when the device is an access network device, it can send a first message to a terminal device on the resource corresponding to the first frequency domain information. The device may also include a storage unit coupled to the processing unit, which stores the necessary program instructions and data of the device. As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory. The memory may be integrated with the processor or separated from it.

[0059] In another possible implementation, the device includes a processor and may also include a memory. The processor is coupled to the memory and can be used to execute computer program instructions stored in the memory to cause the device to perform the methods of the first aspect or any possible implementation thereof, or to perform the methods of the second aspect or any possible implementation thereof, or to perform the methods of the third aspect or any possible implementation thereof, or to perform the methods of the fourth aspect or any possible implementation thereof, or to perform the methods of the fifth aspect or any possible implementation thereof. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface. When the device is an access network device, a terminal device, or a core network device, the communication interface may be a transceiver or an input / output interface; when the device is a chip included in an access network device, a chip included in a terminal device, or a chip included in a core network device, the communication interface may be an input / output interface of the chip. Optionally, the transceiver may be a transceiver circuit, and the input / output interface may be an input / output circuit.

[0060] In a seventh aspect, this application provides a computer-readable storage medium storing a computer program or instructions that, when executed by a communication device, implement the method in the first aspect or any possible implementation of the first aspect, or implement the method in the second aspect or any possible implementation of the second aspect, or implement the method in the third aspect or any possible implementation of the third aspect, or execute the method in the fourth aspect or any possible implementation of the fourth aspect, or execute the method in the fifth aspect or any possible implementation of the fifth aspect.

[0061] Eighthly, this application provides a computer program product comprising a computer program or instructions that, when executed by a communication device, implement the method in the first aspect or any possible implementation of the first aspect, or implement the method in the second aspect or any possible implementation of the second aspect, or implement the method in the third aspect or any possible implementation of the third aspect, or execute the method in the fourth aspect or any possible implementation of the fourth aspect, or execute the method in the fifth aspect or any possible implementation of the fifth aspect.

[0062] Ninthly, this application provides a chip including at least one processor and an interface; the interface is used to provide program instructions or data to the at least one processor; the at least one processor is used to execute the program instructions to implement the method in the first aspect or any possible implementation of the first aspect, or to implement the method in the second aspect or any possible implementation of the second aspect, or to implement the method in the third aspect or any possible implementation of the third aspect, or to execute the method in the fourth aspect or any possible implementation of the fourth aspect, or to execute the method in the fifth aspect or any possible implementation of the fifth aspect.

[0063] In a tenth aspect, this application provides a communication system comprising an access network device for performing the first aspect or any possible implementation thereof, a terminal device for performing the second aspect or any possible implementation thereof, a core network device for performing the third aspect or any possible implementation thereof, or performing the method in the fourth aspect or any possible implementation thereof, or performing the method in the fifth aspect or any possible implementation thereof.

[0064] The technical effects that can be achieved by any of the second to eighth aspects mentioned above can be referred to the description of the beneficial effects in the first aspect, or the description of the beneficial effects in the fourth aspect, or the description of the beneficial effects in the fifth aspect, and will not be repeated here. Attached Figure Description

[0065] Figure 1 A schematic diagram of a communication system architecture is provided for this application;

[0066] Figure 2 A schematic diagram of a communication system architecture is provided for this application;

[0067] Figure 3 A schematic diagram illustrating how an access network device assigns a BWP to a terminal device, as provided in this application;

[0068] Figure 4 A schematic diagram illustrating the configuration of multiple carriers in an access network device provided in this application;

[0069] Figure 5 A flowchart illustrating the first communication method provided by this application;

[0070] Figure 6 A flowchart illustrating a second communication method provided as an example in this application;

[0071] Figure 7 A schematic diagram illustrating the paging process of a terminal device in the RRC idle state, provided as an example of this application;

[0072] Figure 8 A schematic diagram illustrating the process of paging a terminal device in an RRC inactive state, provided as an example of this application;

[0073] Figure 9 A flowchart illustrating a third communication method provided as an example in this application;

[0074] Figure 10 A schematic diagram illustrating another paging process for a terminal device in the RRC idle state, provided as an example of this application;

[0075] Figure 11 A schematic diagram illustrating another process for paging a terminal device in an RRC inactive state, provided as an example of this application;

[0076] Figure 12 A flowchart illustrating the fourth communication method provided as an example in this application;

[0077] Figure 13 A flowchart illustrating the fifth communication method provided as an example in this application;

[0078] Figure 14A schematic diagram of the structure of a communication device provided in this application;

[0079] Figure 15 This is a schematic diagram of the structure of a communication device provided in this application. Detailed Implementation

[0080] Before introducing the embodiments of this application, some terms used in the embodiments of this application will be explained to facilitate understanding by those skilled in the art.

[0081] 1) A terminal device, also known as a terminal, is an entity on the user side used to receive or transmit signals, sending uplink signals to network devices or receiving downlink signals from network devices. This includes devices that provide voice and / or data connectivity to users, such as handheld devices with wireless connectivity or processing devices connected to a wireless modem. This terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal equipment may include user equipment (UE), V2X terminal equipment, wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user device, wearable device, vehicle-mounted equipment, etc.

[0082] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices or smart wearable devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0083] The various terminal devices described above, if located in a vehicle (e.g., placed inside or installed inside a vehicle), can be considered as vehicle-mounted terminal devices, also known as on-board units (OBUs).

[0084] 2) The core network can include network equipment that processes and forwards user signaling and data. This includes core network equipment such as the Access and Mobility Management Function (AMF), Session Management Function (SMF), and User Plane Gateways. The User Plane Gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, typically located on the network side, such as a Serving Gateway (SGW), Packet Data Network Gateway (PGW), or User Plane Function (UPF). The AMF and SMF are equivalent to the Mobility Management Entity (MME) in the LTE system. The AMF is mainly responsible for access control, while the SMF is mainly responsible for session management. Of course, the core network can also include other network elements, which are not listed here.

[0085] 3) Next-generation radio access network (NG-RAN) can include one or more access network devices. Access network devices in NG-RAN can also be called base stations, RAN nodes, or RAN equipment. Access network devices are network-side entities used for transmitting and / or receiving signals, acting as routers between terminals and the rest of the access network, which may include IP networks, etc. Access network devices can also coordinate the management of air interface attributes. For example, an access network device can be an evolved Node B (eNB or e-NodeB) in LTE. An eNB is a device deployed in the radio access network that meets 4G standards and provides wireless communication functions for terminals. The access network equipment can also be a new radio controller (NR controller), a gNode B (gNB) in a 5G system, a centralized unit, a new wireless base station, a remote radio module, a micro base station (also known as a small cell), a relay, a distributed unit, a macro base station of various forms, a transmission reception point (TRP), a transmission measurement function (TMF), or a transmission point (TP), or any other wireless access device, or a base station in next-generation communications, but the embodiments of this application are not limited thereto.

[0086] 4) RRC status: There are 3 RRC statuses for terminal devices: RRC connected status, RRC idle status, and inactive status.

[0087] RRC connection state (or simply connection state; in this article, "connection state" and "RRC connection state" are the same concept and the two terms can be used interchangeably) refers to the logical connection between the terminal device and the access network device that exists at the RRC layer. The terminal device and the access network device store the terminal device's context (UE context). In this state, the terminal device can transmit uplink or downlink data and signaling with the access network device.

[0088] RRC idle state (or simply idle state; in this article, "idle state" and "RRC idle state" are the same concept and the two terms can be used interchangeably) refers to a state in which there is no logical connection at the RRC layer between the terminal device and the access network device. The terminal device cannot transmit uplink or downlink data and signaling with the access network device. In this state, the terminal device can only receive paging information and system information sent by the access network device. Paging in this state is initiated by the core network device.

[0089] The RRC inactive state (or, and may be simply referred to as the inactive state; in this article, "deactivated state," "deactivated state," "inactive state," "RRC inactive state," and "RRC deactivated state" are all the same concept and these terms are interchangeable) refers to a state where there is no logical connection at the RRC layer between the terminal device and the access network device. The terminal device cannot transmit uplink or downlink data and signaling with the access network device, but the context of the terminal device and the core network device is still preserved. In this state, the terminal device can only receive paging information and system information sent by the access network device, and paging is initiated by the RAN.

[0090] 5) Discontinuous reception (DRX) is divided into idle DRX (I-DRX) and connected DRX (C-DRX). Idle DRX allows terminal devices to reduce power consumption by eliminating the need for continuous paging information listening. Connected DRX indicates that the terminal device does not need to continuously listen for control information scheduling uplink / downlink data, also reducing power consumption.

[0091] like Figure 1 This application illustrates the architecture of a possible communication system to which the communication method provided in this embodiment is applicable. This communication system may include network devices and terminals. The embodiments of this application do not limit the number of network devices and terminals included in this communication system.

[0092] Figure 1 The example includes six terminals, namely terminal 1 to terminal 6. Figure 1 This is just an illustration; the communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. Network devices can provide wireless access services to terminals, implementing one or more of the following functions: wireless physical layer functions, resource scheduling and wireless resource management, quality of service (QoS) management, wireless access control, and mobility management. Terminals can communicate with network devices via the air interface.

[0093] In this communication system, terminals 1 to 6 can send uplink information to network devices, and network devices can send downlink information to terminals 1 to 6.

[0094] Furthermore, terminals 4, 5, and 6 can also form a communication system. In this system, network devices can send downlink information to terminals 4, 5, and 6. Network devices can also send downlink information to terminals 4 and 6 via terminal 5, or terminals 4 and 6 can send uplink information to network devices via terminal 5.

[0095] Figure 2 This illustration shows another possible communication system architecture to which the communication method provided in this application embodiment is applicable. The communication system 200 includes a core network device 210, an access network device 220, and a terminal device 230. The access network device 220 is connected to the core network device 210 via an S1 interface, and the access network devices 220 are connected to each other via an X2 interface for communication. Each access network device 220 can provide services to one or more terminal devices 230 within its coverage area.

[0096] The method provided in this application can be applied to fourth-generation (4G) communication systems, fifth-generation (5G) communication systems, or various future communication systems. Specifically, it can be applied to MTC communication scenarios as well as NB-IoT communication scenarios.

[0097] 5G communication systems support configurable bandwidth parts (BWPs). Access network devices can flexibly adjust bandwidth based on the service data volume of terminal devices to save power consumption. Currently, in RRC idle state, access network devices configure an initial BWP for initial access by terminal devices via system messages. When a terminal device enters RRC connected state, the access network device can configure multiple dedicated BWPs for the terminal device. The access network device can activate the dedicated BWPs of the terminal device through dynamic indication.

[0098] like Figure 3As shown, the terminal device accesses the access network device via the initial BWP and enters the RRC connection state. The access network device then configures three dedicated BWPs for the terminal device, designated as the first, second, and third BWPs. At time t1, the access network device activates the first BWP for the terminal device. At time t2, the access network device activates the second BWP for the terminal device. At time t3, the access network device activates the third BWP for the terminal device. At any given time, the terminal device has only one active dedicated BWP.

[0099] 5G frequency bands are divided into two parts: FR1 (F < 6GHz, low frequency) and FR2 (F > 6GHz, high frequency, millimeter wave). FR1 bandwidth can be 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 40MHz, 50MHz, 60MHz, 80MHz, and 100MHz. FR2 bandwidth can be 50MHz, 100MHz, 200MHz, and 400MHz.

[0100] In 5G, terminal devices with reduced capabilities, complexity, and power consumption are introduced, which can be called NR-Light terminal devices or Reduce Capability UEs (Red-Cap UEs). These terminal devices are mainly used in IoT scenarios, and the number of such devices is relatively large. Their main characteristic includes reduced bandwidth (UE Bandwidth Reduction), meaning the terminal device communicates on a relatively small bandwidth. For example, a terminal device that only supports 5MHz bandwidth, or only supports 5MHz and 10MHz bandwidth, or supports 5MHz, 10MHz, and 15MHz bandwidth, or supports 5MHz, 10MHz, 15MHz, and 20MHz bandwidth, etc.

[0101] In this application, the indication method of frequency domain resources may be different in different scenarios: for example, BWP in NR, narrowband (NB) in eMTC, and carrier in NB-IoT. Of course, there may be other indication methods in future scenarios.

[0102] It should also be noted that the physical downlink shared channels involved in this application, such as the physical downlink shared channel (PDSCH) and the narrowband physical downlink shared channel (NPDSCH), are essentially channels with the same function, but have different names in different technologies and can be replaced with each other in this application. Similarly, the physical downlink control channels involved in this application, such as the PDCCH (physical downlink control channel), the MTC physical downlink control channel (MPDCCH), the enhanced physical downlink control channel (EPDCCH), and the narrowband physical downlink control channel (NPDCCH), are essentially channels with the same function, but have different names in different technologies and can also be replaced with each other in this application.

[0103] In the scenarios shown above Figure 1 and Figure 2 the access network device and the terminal device can determine the frequency-domain resources corresponding to the paging information based on the same preset rule, and the access network device sends paging on the frequency-domain resources, while the terminal device detects paging on the frequency-domain resources.

[0104] Exemplarily, in NB-IoT, the access network device is provided with multiple carriers. Please refer to the schematic diagram of the access network device with multiple carriers shown in Figure 4 Among the multiple carriers, there is an anchor carrier and at least one non-anchor carrier, and each carrier corresponds to its own weight. When the terminal device is in the RRC idle state, it camps on the anchor carrier of the access network device. The access network device and the terminal device can determine the paging carrier based on the preset rule, and then the access network device pages on the paging carrier, while the terminal device listens for paging on the paging carrier.

[0105] In one example, the paging carrier is the carrier corresponding to the smallest carrier index that satisfies the relationship (1):

[0106] floor(UE_ID / (N*Ns))mod W<W(0)+W(1)+…+W(n)……Relationship (1)

[0107] In relation (1), UE_ID is the terminal device identifier associated with the International Mobile Subscriber Identity (IMSI) or the 5G globally unique temporary UE identity (5G-S-TMSI);

[0108] N is min(T,nB);

[0109] Ns is max(1, nB / T);

[0110] T represents the DRX cycle of the terminal device;

[0111] nB is 4T, 2T, T, T / 2, T / 4, T / 8, T / 16, T / 32, T / 64, T / 128, T / 256, T / 512, T / 1024;

[0112] Nn is the total number of paging carriers;

[0113] W(i) is the weight of the i-th paging carrier;

[0114] W is the sum of the weights of all paging carriers, for example, W = W(0) + W(1) + ... + W(Nn-1).

[0115] Furthermore, each carrier has corresponding transmission parameters, such as the maximum number of repetitions. To ensure that different carriers cover the same area, it is necessary to configure the maximum number of repetitions for different NPDCCH common search spaces (CSS) for each carrier. After determining the paging carrier, the access network device can send a paging carrier with the corresponding maximum number of repetitions. Correspondingly, after determining the paging carrier, the terminal device can refer to the maximum number of repetitions to receive paging on the corresponding paging carrier. In this application, the maximum number of repetitions can also be referred to as the number of repetitions, repetition information, etc. Of course, it may have other names in other cases. This application is only an example and does not limit its name.

[0116] In the above technical solution, the paging carrier is determined based on UE_ID. Since UE_ID is essentially a random ID, the calculation formula based on UE_ID is essentially to randomly distribute different UEs on different paging carriers to receive paging. Therefore, the above preset rule is essentially based on the principle of randomness to determine the paging carrier.

[0117] Currently, for terminal devices that support different services, which may be set up in environments with different coverage, the above-mentioned technical solution of determining the paging carrier based on the random principle may lead to a mismatch between the paging carrier and the terminal device services.

[0118] Based on this, this application provides a communication method to solve the problem of mismatch between the frequency domain resources determined by the access network equipment and the terminal equipment and the service characteristics of the terminal equipment.

[0119] In this application, the message transmitted between the access network device and the terminal device is referred to as the first message. The frequency domain information (also referred to as frequency information) corresponding to the frequency domain resources used for transmitting the first message between the access network device and the terminal device is referred to as the first frequency domain information. The resource requirements used to indicate the transmission of the first message between the terminal device and the access network device are referred to as the first requirement information.

[0120] like Figure 5 This application provides an exemplary flowchart of a communication method, in which:

[0121] Step 501: The terminal device determines the first frequency domain information.

[0122] Specifically, the terminal device determines the first frequency domain information based on the first requirement information and the preset correspondence.

[0123] The first requirement information is used to indicate the resource requirements when the terminal device transmits messages with the access network device. For example, the first requirement information is associated with the service characteristics of the terminal device. Specifically, it is related to the channel state (also known as channel quality) between the access network device and the terminal device. For instance, if the terminal device is a water or electricity meter located in a basement, the channel state between the access network device and the terminal device is poor. The first requirement information indicates that the access network device needs to repeatedly send downlink signals, that is, transmit the same transport block in multiple subframes, in order to improve coverage and ensure that the terminal device successfully receives the downlink signal.

[0124] The preset mapping relationship is configured in the access network device. This preset mapping relationship includes the mapping between demand information and frequency domain information, where the first demand information corresponds to the first frequency domain information. The preset mapping relationship can be sent from the access network device to the terminal device. Specifically, the preset mapping relationship can be carried in access stratum (AS) signaling sent from the access network device to the terminal device, such as system messages or RRC messages.

[0125] Step 502: The access network device determines the first frequency domain information.

[0126] Specifically, the access network device determines the first frequency domain information based on the first requirement information and the preset correspondence.

[0127] The method by which the access network device determines the first frequency domain information is similar to the method by which the terminal device determines the first frequency domain information in step 501 above, and will not be described again. The order of steps 501 and 502 is not restricted.

[0128] Step 503: The access network device sends a first message on the resource corresponding to the first frequency domain information.

[0129] Specifically, the first frequency domain information corresponds to a first frequency domain resource and a first transmission parameter. The access network device sends a first message on the first frequency domain resource according to the first transmission parameter. Correspondingly, the terminal device receives the first message on the first frequency domain resource according to the first transmission parameter.

[0130] The terminal device can be in RRC idle state or RRC inactive state. The first message is used by the access network device to page the terminal device, and the first message can be paging information. For example, the first message is specifically downlink control information (DCI) for paging the terminal device, and the first message is carried in the PDCCH. Alternatively, the first message is specifically a paging message for paging the terminal device, which includes downlink data, and the first message is carried in the PDSCH.

[0131] Taking downlink control information as an example, the access network device sends downlink control information on the PDCCH corresponding to the first frequency domain resource according to the first transmission parameters. The terminal device receives downlink control information on the PDCCH corresponding to the first frequency domain resource according to the first transmission parameters.

[0132] In this application, the access network device determines the first frequency domain information based on the first requirement information and the preset correspondence, and the terminal device determines the first frequency domain information based on the first requirement information and the preset correspondence. The two transmit the first message on the resources corresponding to the first frequency domain information. The resources corresponding to the first frequency domain information can satisfy the first requirement information, thus avoiding the problem that the frequency domain resources determined by the access network device and the terminal device do not match the service characteristics of the terminal device.

[0133] In combination with the above Figure 5 In related embodiments, this application provides a second communication method in which the first requirement information can be agreed upon by the core network equipment and the terminal equipment.

[0134] The first requirement information can be called the first requirement level, and the preset correspondence can be called the first correspondence relationship. The first requirement level and the first correspondence relationship will be explained below.

[0135] I. First Demand Level

[0136] The first requirement level is used to indicate the configuration requirements of the terminal device service for the transmission parameters of the first message. For example, the first requirement level may include one or more of the following: latency requirement level, coverage requirement level, and paging probability level.

[0137] Coverage demand levels can include normal coverage, deep coverage, and no coverage demand. Normal coverage includes terminal devices such as streetlights on the ground, deep coverage includes terminal devices such as water and electricity meters in basements, and no coverage demand includes terminal devices such as wearable devices. In some embodiments, deep coverage may further include multiple levels of deep coverage, such as deep coverage level 1 and deep coverage level 2.

[0138] Latency requirement levels can include latency-sensitive, latency-free (or latency-tolerable), latency-sensitive terminal devices such as smoke detectors, and latency-free terminal devices such as water and electricity meters.

[0139] Paging probability levels can be categorized as high paging probability and low paging probability. High paging probability terminal devices include, for example, user mobile phones, while low paging probability terminal devices include, for example, streetlights.

[0140] Combining latency requirement level, coverage requirement level, and paging probability level, an example is given to illustrate the first requirement level.

[0141] In one implementation, the first demand level can be pre-set with three fields, which respectively indicate the latency demand level, coverage demand level, and paging probability level. If a field is empty, it can indicate that the demand corresponding to that field is no demand.

[0142] Example 1: The terminal device service corresponds to latency requirements. For example, if the latency requirement level is latency sensitive, then the first field in the first requirement level indicates latency sensitivity, and the last two fields are empty.

[0143] Example 2: Terminal device services correspond to latency requirements and coverage requirements. For example, if the latency requirement level is latency-sensitive and the coverage requirement level is normal coverage, then the first field in the first requirement level indicates latency-sensitive, the second field indicates normal coverage, and the third field is empty.

[0144] Example 3: Terminal device services correspond to latency requirements, coverage requirements, and paging probability. For example, if the latency requirement level is latency-sensitive, the coverage requirement level is normal coverage, and the paging probability is high paging probability, then the first field in the first requirement level indicates latency-sensitive, the second field indicates normal coverage, and the third field indicates high paging probability.

[0145] It should be noted that if the latency requirement level is "no latency requirement", the first field in the first requirement level can also be empty; similarly, if the coverage requirement level is "no coverage requirement", the second field in the first requirement level can also be empty. In a specific example, if the terminal service corresponds to no latency requirement, no coverage requirement, and high paging probability, then the first and second fields in the first requirement level can both be empty, and the third field indicates the high paging probability.

[0146] In another implementation, the first demand level is one of latency demand level, coverage demand level, or paging probability level, and includes a field. For example, this field uses one bit to indicate the latency demand of the terminal device's service: 0 indicates a latency-sensitive demand level, and 1 indicates a latency-insensitive (or latency-tolerable) demand level. For instance, if the bit is 0, this field in the first demand level indicates latency-sensitive. Alternatively, for example, this field uses two bits to indicate the coverage demand level of the terminal device's service: 00 indicates a normal coverage demand level (or ordinary coverage), 01 indicates a deep coverage level 1, 10 indicates a deep coverage level 2, and 11 indicates no coverage demand or is a reserved value. For instance, if the bit is 01, this field in the first demand level indicates deep coverage level 1. Furthermore, the first demand level can also indicate that the terminal device has no demand for latency, coverage, or paging probability.

[0147] Alternatively, the first requirement level can be any two of the following: latency requirement level, coverage requirement level, and paging probability level. The first requirement level includes two fields. For example, if the terminal device service corresponds to latency requirements and coverage requirements, such as a latency requirement level of latency-sensitive and a coverage requirement level of normal coverage, then the two fields in the first requirement level will indicate latency-sensitive and normal coverage, respectively. Furthermore, the first requirement level can also indicate that the terminal device has no requirement for paging probability.

[0148] It should be noted that if the terminal device corresponds to a latency requirement level of "no latency requirement," then the first requirement level may not include a field indicating no latency requirement. Alternatively, if the terminal device corresponds to a coverage requirement level of "no coverage requirement," then the first requirement level may not include a field indicating no coverage requirement. In a specific example, if the terminal service corresponds to no latency requirement, no coverage requirement, and high paging probability, then the first requirement level may include only one field, which indicates high paging probability.

[0149] It should also be noted that the two implementations mentioned above are merely examples provided in this application. This application may also include other implementations, which will not be listed here. Of course, the first requirement level is not limited to the types listed above, and may follow other classification methods, using other names, quantities, and definitions. This application does not impose any restrictions on this.

[0150] In one alternative implementation, the core network equipment and the terminal equipment negotiate to determine the first requirement level.

[0151] Specifically, the terminal device sends non-access stratum (NAS) signaling to the core network device. This NAS signaling includes the first request level requested by the terminal device, such as attach request messages and tracking area update request messages (TAU request messages). If the core network device determines that it accepts the first request level, it sends an acceptance message to the terminal device. If the core network device determines that it does not accept the first request level, it sends a rejection message to the terminal device. Furthermore, the core network device can send the first request level indicated by the core network device when sending the rejection message.

[0152] In addition, terminal devices can directly report the first demand level to the core network device, or the core network device can directly send the first demand level to the terminal device. The first demand level can be determined between the core network device and the terminal device without the need for a request and confirmation signaling interaction process.

[0153] In this implementation, if the first demand level is no demand, the core network device and the terminal device can also reach a consensus by default. For example, the core network device and the terminal device agree to use NAS signaling, such as reserving bits in the attach request message to indicate the first demand level. If the reserved bits in the attach request message sent by the terminal device to the core network device are empty (that is, it does not contain the first demand level), the core network device determines that the terminal device is a terminal device with no demand.

[0154] The core network equipment can send the first demand level to the access network equipment. The first demand level can be a separate message or carried in an existing message.

[0155] The core network equipment can send the first demand level to the access network equipment when the terminal equipment is in the RRC connected state, or when the terminal equipment is in the RRC idle state or RRC inactive state.

[0156] For example, when the terminal device is in the RRC idle state, the first demand level can be carried in the paging information sent by the core network device to the access network device. When the terminal device is in the RRC inactive state, the first demand level can be carried in the RRC inactive assistance information sent by the core network device to the access network device.

[0157] In another implementation, the first requirement level can be sent from the terminal device to the access network device. This first requirement level can be a separate message or carried within an existing message. When the terminal device is in RRC connected state, the first requirement level can be carried within an RRC message sent by the terminal device to the access network device. RRC messages include, for example, RRC setup request messages, RRC setup complete messages, and RRC reconfiguration complete messages.

[0158] It should be noted that the access network device can use the first demand level as the context storage of the terminal device. If the terminal device is in an RRC inactive state and moves from the coverage area of ​​the first access network device to the coverage area of ​​the second access network device, and the first access network device stores the context of the terminal device, then the second access network device can also request the context of the terminal device from the first access network device. Thus, the second access network device determines the first frequency domain information based on the first demand level in the context of the terminal device. A specific implementation can be found in the following embodiments.

[0159] In this application, the first access network device may be referred to as an anchor access network device or an anchor base station, and the second access network device may be referred to as a non-anchor access network device or a non-anchor base station.

[0160] II. First Correspondence

[0161] The first correspondence indicates the correspondence between the demand level and the frequency domain information.

[0162] In one implementation, the first correspondence is a correspondence between demand level and frequency domain information, whereby the frequency domain information includes frequency domain resources and transmission parameters. For example, this first correspondence is shown in Table 1.

[0163] Table 1

[0164] Demand Level Frequency domain information Demand Level 1 Frequency domain information 1 (frequency domain resource 1, transmission parameter 1) Demand Level 2 Frequency domain information 2 (frequency domain resource 2, transmission parameter 2) Demand Level 3 Frequency domain information 3 (frequency domain resource 3, transmission parameter 3) Demand Level 4 Frequency domain information 4 (frequency domain resource 4, transmission parameters 4)

[0165] In another implementation, frequency domain information is frequency domain resources, and the first correspondence includes the correspondence between demand level, frequency domain resources, and transmission parameters.

[0166] In one example, the correspondence between demand level, frequency domain resources, and transmission parameters is shown in Table 2a.

[0167] Table 2a

[0168] Demand Level Frequency domain resources Transmission parameters Demand Level 1 Frequency domain resource 1 Transmission parameter 1 Demand Level 2 Frequency domain resources 2 Transmission parameter 2 Demand Level 3 Frequency domain resources 3 Transmission parameter 3 Demand Level 4 Frequency domain resources 4 Transmission parameter 4

[0169] In another example, the correspondence between demand levels and frequency domain resources is shown in Table 2b, and the correspondence between frequency domain resources and transmission parameters is shown in Table 2c.

[0170] Table 2b

[0171] Demand Level Frequency domain resources Demand Level 1 Frequency domain resource 1 Demand Level 2 Frequency domain resources 2 Demand Level 3 Frequency domain resources 3 Demand Level 4 Frequency domain resources 4

[0172] Table 2c

[0173] Frequency domain resources Transmission parameters Frequency domain resource 1 Transmission parameter 1 Frequency domain resources 2 Transmission parameter 2 Frequency domain resources 3 Transmission parameter 3 Frequency domain resources 4 Transmission parameter 4

[0174] The first correspondence is illustrated in tabular form, but the first correspondence in this application is not limited to tabular form.

[0175] In the first correspondence described above, frequency domain resource indexes can be used to indicate frequency domain resources. For example, in Table 1 above, index 1 can indicate frequency domain resource 1, and index 2 can indicate frequency domain resource 2. Alternatively, the first correspondence may not have frequency domain resource indexes, but instead implicitly indicate frequency domain resources based on their positions in the first correspondence. For example, in Table 1 above, the frequency domain resource in the first position is frequency domain resource 1, and the frequency domain resource in the second position is frequency domain resource 2.

[0176] The transmission parameters include one or more reference transmission parameters, such as maximum number of repetitions, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0177] The maximum number of repetitions indicates the maximum number of times the paging information can be transmitted. For example, if the maximum number of repetitions is 10, the access network device will send the paging information 10 times, and the terminal device can receive the paging information a maximum of 10 times.

[0178] The DRX cycle, also known as the paging cycle, is used by terminal devices to determine the paging occasion (PO) for listening to paging information.

[0179] The WUS enable flag indicates whether the terminal device needs to use WUS. In one example, a WUS enable flag value of 1 indicates that the terminal device needs to use WUS, and a WUS enable flag value of 0 indicates that the terminal device does not need to use WUS. In another example, in DRX mode, when the terminal device detects WUS, it should listen for subsequent POs. In extended discontinuous reception (eDRX) mode, when the terminal device detects WUS, it should listen for multiple subsequent POs or listen until it receives a paging message containing the terminal device's NAS identifier (whichever is earlier). If the terminal device does not detect WUS, it does not need to listen for the following POs.

[0180] Paging timing density indicates the number of subframes in a radio frame that can be used to carry paging information. For example, paging timing density indicates the number of subframes in a radio frame that can be used to carry paging downlink control information.

[0181] The power boost capability indicates that the access network equipment increases its transmission power to a multiple of its original transmission power (or increases it to the target dB) for use with paging terminal equipment.

[0182] Based on the above description of the demand levels and transmission parameters, Table 3 provides an example of a first correspondence.

[0183] The demand levels include normal coverage, deep coverage, no demand, and latency sensitive. Transmission parameters include the maximum number of repetitions and the DRX period. For example, the maximum number of repetitions, ordered from smallest to largest, are: maximum repetition 4, maximum repetition 3, maximum repetition 1, maximum repetition 2; and the DRX periods, ordered from smallest to largest, are: DRX period 4, DRX period 3, DRX period 1, DRX period 2.

[0184] Table 3

[0185]

[0186]

[0187] It should be noted that the first correspondences for different cells can be the same or different, and the terminal device can receive the first correspondence for the cell it is camped on from the access network device. In one example, the terminal device is camped on a certain cell, and the access network device broadcasts the first correspondence for that cell to the terminal device. In another example, after the terminal device reselects to the target cell, it requests the first correspondence for that cell from the access network device corresponding to the target cell, and the access network device sends the first correspondence for that cell to the terminal device.

[0188] Based on the above description, such as Figure 6 The flowchart of the second communication method provided in this application is as follows.

[0189] Step 601: The terminal device determines the first frequency domain information based on the first demand level and the first correspondence.

[0190] In one implementation, the terminal device determines first frequency domain information corresponding to the first demand level based on a first correspondence relationship. The first frequency domain information includes first frequency domain resources and first transmission parameters.

[0191] Referring to the example in Table 1 above, the first demand level is demand level 1. The terminal device determines the first frequency domain information as frequency domain information 1 based on the correspondence between demand level 1 and the first demand level. Specifically, the first frequency domain resource is frequency domain resource 1, and the first transmission parameter is transmission parameter 1.

[0192] In another implementation, the terminal device determines the first frequency domain resource corresponding to the first demand level based on the correspondence between the demand level and frequency domain information in the first correspondence relationship. Then, the terminal device determines the first transmission parameter corresponding to the first frequency domain resource by combining the correspondence between the frequency domain resource and transmission parameters in the first correspondence relationship.

[0193] Referring to the example in Table 2a above, the first demand level is demand level 1. The terminal device determines the first frequency domain resource as frequency domain resource 1 based on the correspondence between demand level 1 and frequency domain information in the first correspondence relationship. Then, the terminal device determines the first transmission parameter as transmission parameter 1 corresponding to frequency domain resource 1 by referring to the correspondence between frequency domain resources and transmission parameters in the first correspondence relationship.

[0194] It should be noted that in the examples shown in Tables 1 to 3 above, one first demand level may correspond to one frequency domain information, but the embodiments of this application do not exclude the implementation method in which one first demand level corresponds to multiple frequency domain information.

[0195] In one alternative approach, the first correspondence can be as shown in Table 4a, where the demand level can correspond to one or more frequency domain information.

[0196] Table 4a

[0197] Demand Level Frequency domain resources Transmission parameters Demand Level 1 Frequency domain resource 1 Transmission parameter 1 Demand Level 1 Frequency domain resources 2 Transmission parameter 2 Demand Level 1 Frequency domain resources 3 Transmission parameter 3 Demand Level 2 Frequency domain resources 4 Transmission parameter 4 Demand Level 3 Frequency domain resources 5 Transmission parameter 5 Demand Level 3 Frequency domain resources 6 Transmission parameter 6

[0198] In this implementation, the terminal device can determine multiple frequency domain resources corresponding to the first demand level from the first correspondence relationship based on the first demand level. These multiple frequency domain resources corresponding to the first demand level can be referred to as multiple candidate frequency domain resources. Then, the terminal device determines the first frequency domain resource from the multiple candidate frequency domain resources based on the terminal device identifier.

[0199] In one alternative implementation, the first frequency domain resource is the frequency domain resource corresponding to the smallest frequency domain resource index that satisfies relation (2):

[0200] floor(UE_ID / (N*Ns))mod Nn……relation (2)

[0201] In relation (2), UE_ID is the terminal device identifier associated with IMSI or 5G-S-TMSI;

[0202] N is min(T,nB);

[0203] Ns is max(1, nB / T);

[0204] T is the DRX cycle of the terminal device;

[0205] nB is 4T, 2T, T, T / 2, T / 4, T / 8, T / 16, T / 32, T / 64, T / 128, T / 256, T / 512, T / 1024;

[0206] Nn is the total number of paging carriers.

[0207] In another optional manner, the first correspondence relationship can be as shown in Table 4b, where the demand level can correspond to one or more frequency domain information, and each frequency domain information corresponds to a weight, and the weight is used to determine the first frequency domain information.

[0208] Table 4b

[0209] Demand Level Frequency domain resources Transmission parameters Weight Demand Level 1 Frequency domain resource 1 Transmission parameter 1 Weight 1 Demand Level 1 Frequency domain resources 2 Transmission parameter 2 Weight 2 Demand Level 1 Frequency domain resources 3 Transmission parameter 3 Weight 3 Demand Level 2 Frequency domain resources 4 Transmission parameter 4 Weight 4 Demand Level 3 Frequency domain resources 5 Transmission parameter 5 Weight 5 Demand Level 3 Frequency domain resources 6 Transmission parameter 6 Weight 6

[0210] In this implementation manner, the terminal device can determine, according to the first demand level, from the first correspondence relationship, multiple frequency domain resources corresponding to the first demand level, and the multiple frequency domain resources corresponding to the first demand level can be referred to as multiple candidate frequency domain resources. Then, the terminal device determines the first frequency domain resource from the multiple candidate frequency domain resources according to the weights corresponding to each candidate frequency domain resource.

[0211] In an optional implementation manner, the first frequency domain resource is the frequency domain resource corresponding to the smallest frequency domain resource index that satisfies the relationship formula (3):

[0212] floor(UE_ID / (N*Ns)) mod W < W(0) + W(1) + … + W(n) …… Relationship formula (3)

[0213] In relationship formula (3), UE_ID is the terminal device identifier associated with IMSI or 5G-S-TMSI;

[0214] N is min(T, nB);

[0215] Ns is max(1, nB / T);

[0216] T is the DRX cycle of the terminal device;

[0217] nB is 4T, 2T, T, T / 2, T / 4, T / 8, T / 16, T / 32, T / 64, T / 128, T / 256, T / 512, T / 1024;

[0218] Nn is the total number of paging carriers;

[0219] W(i) is the weight of the i-th candidate frequency domain resource;

[0220] W represents the total weight of multiple candidate frequency resources.

[0221] Referring to Table 4b, if the first demand level is demand level 1, the terminal device determines three candidate frequency domain resources as frequency domain resource 1 to frequency domain resource 3. Furthermore, based on relation (3), the terminal device determines the first frequency domain resource from the three candidate frequency domain resources.

[0222] Assuming UE_ID is 12345, T = 128, nB = T / 4 = 32, the weights corresponding to frequency domain resources 1 to frequency domain resources 3 are W(0) = 5, W(1) = 2, W(2) = 12 respectively, and correspondingly, Ns = 1, N = T / 4 = 32, and the sum of the weights corresponding to frequency domain resources 1 to frequency domain resources 3 is W = W(0) + W(1) + W(2) = 19.

[0223] First step, floor(UE_ID / (N*Ns))mod W=floor(12345 / (32*1))mod19=5.

[0224] The second step is to determine that for frequency domain resource 1, floor(UE_ID / (N*Ns))mod W=5 is not less than the weight W(0)=5 corresponding to frequency domain resource 1, thus confirming that frequency domain resource 1 does not conform to relation (3).

[0225] The third step is to determine that the sum of the weights corresponding to frequency domain resource 1 and frequency domain resource 2 is 7 (W(0)+W(1)=7), and floor(UE_ID / (N*Ns))mod W=5 is less than 7, thus confirming that frequency domain resource 2 conforms to relation (3).

[0226] Fourth step, for frequency domain resource 3, the sum of the weights corresponding to frequency domain resource 1, frequency domain resource 2 and frequency domain resource 3 is 19, floor(UE_ID / (N*Ns))mod W=5 is less than 19, so it is determined that frequency domain resource 3 conforms to relation (3).

[0227] Fifth step, both frequency domain resource 2 and frequency domain resource 3 conform to relation (3). The frequency domain resource corresponding to the smallest frequency domain resource index is determined from frequency domain resource 2 and frequency domain resource 3 as frequency domain resource 2. That is, based on relation (3), the terminal device determines frequency domain resource 2 as the first frequency domain resource from the three frequency domain resources 1 to frequency domain resource 3.

[0228] Step 602: The access network device determines the first frequency domain information based on the first demand level and the first correspondence.

[0229] In this application, the implementation method of the access network device determining the first frequency domain information based on the first correspondence and the first demand level can be specifically referred to in step 601, where the terminal device determines the first frequency domain information, and will not be repeated here.

[0230] The order of steps 601 and 602 is not restricted.

[0231] Step 603: The access network device sends a first message on the resource corresponding to the first frequency domain information.

[0232] In one implementation, the first frequency domain information includes first frequency domain resources and first transmission parameters. The access network device sends a first message using the first transmission parameters on the first frequency domain resources. Correspondingly, the terminal device receives the first message using the first transmission parameters on the first frequency domain resources.

[0233] In another implementation, the first frequency domain information is a first frequency domain resource. The access network device sends a first message on the first frequency domain resource using the first transmission parameters corresponding to the first frequency domain resource. Correspondingly, the terminal device receives the first message on the first frequency domain resource using the first transmission parameters corresponding to the first frequency domain resource.

[0234] For example, the first frequency domain resource is a frequency point of 10MHz, and the first transmission parameters include a WUS enable flag, a DRX period, and a maximum number of repetitions. The DRX period is used by the terminal device to determine the PO location, and the WUS enable flag indicates that the UE needs to listen for paging messages on the PO according to the WUS indication. Once the terminal device detects WUS, it listens for paging downlink control information on the subsequent PO and receives paging messages. Specifically, the terminal device can receive a maximum of 10 PDCCHs carrying paging downlink control information, and then receive paging messages on the indicated PDSCH.

[0235] Optionally, the terminal device establishes an RRC connection with the access network device based on the first message. For details, please refer to the description of terminal device accessing the network in the prior art, which will not be repeated here.

[0236] It should be noted that the first level of demand may change.

[0237] In one example, the terminal device determines its corresponding first demand level change based on its environment. For instance, if the terminal device is equipped with environmental sensors, it can determine that its environment has changed from underground to above ground based on the sensed surrounding environmental factors, thus determining that the corresponding first demand level has changed. Another example is that the terminal device determines a change in the channel state with the access network equipment based on measurement results obtained from a reference signal, thereby determining that the first demand level has changed.

[0238] If a terminal device determines that the first requirement level has changed, it can send a second request message to the core network device. This second request message includes the new requirement level (hereinafter referred to as the second requirement level). After receiving the second request message, the core network device updates the first requirement level according to the second requirement level, specifically by directly replacing the first requirement level with the second requirement level.

[0239] Furthermore, the core network equipment or terminal equipment can also send a second demand level to the access network equipment, so that the access network equipment can determine the first frequency domain information based on the second demand level and the first correspondence.

[0240] In combination with the above Figure 5 or Figure 6 In related embodiments, this application exemplarily provides a specific implementation of paging a terminal device in the RRC idle state. For example, refer to... Figure 7 As shown, the process includes:

[0241] Step 701: The core network equipment and the terminal equipment negotiate the first demand level.

[0242] Step 702: The core network equipment sends the first requirement level to the access network equipment.

[0243] Step 703: The access network device sends the first correspondence relationship to the terminal device.

[0244] Step 704: The access network device determines the first frequency domain information based on the first correspondence and the first demand level.

[0245] Step 705: The terminal device determines the first frequency domain information based on the first correspondence and the first demand level.

[0246] Step 706: The access network device sends paging information on the resource corresponding to the first frequency domain information. The paging information is paging downlink control information or a paging message.

[0247] In this embodiment, step 703 can be performed before or after step 701 or step 702, and the order of steps 704 and 705 is not restricted.

[0248] The above process may further include: the terminal device switching from RRC connected state to RRC idle state. If the terminal device is in RRC connected state, the access network device can send the first correspondence through an RRC release message. If the terminal device is in RRC idle state, the access network device can broadcast the first correspondence to the terminal device.

[0249] Figure 7 For details on the specific implementation methods of each step in the process shown, please refer to [link / reference]. Figure 5 or Figure 6 As described in the relevant embodiments.

[0250] In combination with the above Figure 5 or Figure 6 In related embodiments, this application exemplarily provides a specific implementation of paging a terminal device in an RRC inactive state.

[0251] In the first example, the terminal device is still in the serving cell of the first access network device, and the interaction between the core network, the first access network device and the terminal device can refer to steps 701 to 706 above.

[0252] In the second example, when the terminal device moves to the serving cell of the second access network device, it can be referred to as follows: Figure 8 The diagram shown illustrates a process for paging a terminal device in an RRC inactive state. In this process:

[0253] Step 801: The core network equipment and the terminal equipment negotiate the first demand level.

[0254] Step 802: The core network device sends the first demand level to the first access network device.

[0255] Step 803: The first access network device sends a paging message to the second access network device.

[0256] The paging information includes a first demand level, which is used to instruct the second access network device to paging the terminal device according to the first demand level.

[0257] The first demand level can be carried in the context of the terminal device sent by the first access network device to the second access network device. The second access network device requests the context of the terminal device from the first access network device, and the first access network device sends the first correspondence carried in the context of the terminal device to the second access network device.

[0258] Step 804: The second access network device sends the first correspondence relationship to the terminal device.

[0259] Here, the first correspondence is the first correspondence configured in the second access network device. The first correspondence configured in different access network devices may be the same or different.

[0260] Step 805: The second access network device determines the first frequency domain information based on the first correspondence and the first demand level.

[0261] Step 806: The terminal device determines the first frequency domain information based on the first correspondence and the first demand level.

[0262] Step 807: The second access network device sends paging information to the terminal device. The paging information is paging downlink control information or a paging message.

[0263] In this embodiment, the order of steps 805 and 806 is not restricted.

[0264] In either the first or second example, the process may further include: the terminal device switching from an RRC connected state to an RRC inactive state. If the terminal device is in the RRC inactive state, the first access network device can broadcast the first correspondence configured in the first access network device to the terminal device. Similarly, the second access network device can also broadcast the first correspondence configured in the second access network device to the terminal device.

[0265] Figure 8 For details on the specific implementation methods of each step in the process shown, please refer to [link / reference]. Figure 5 or Figure 6 As described in the relevant embodiments.

[0266] In the above technical solution, the core network equipment and the terminal equipment negotiate a first demand level. The first demand level is associated with the service characteristics of the terminal equipment, or with the channel state between the access network equipment and the terminal equipment. The access network equipment determines the first frequency domain information based on the first demand level and the first correspondence, and the terminal equipment determines the first frequency domain information based on the first demand level and the first correspondence. By fully considering the service characteristics of the terminal equipment, the access network equipment and the terminal equipment transmit the first message on the resources corresponding to the first frequency domain information, which helps to increase the probability of the terminal equipment receiving the first message and avoids unnecessary resource and energy consumption.

[0267] In combination with the above Figure 5 In related embodiments, this application provides a third communication method, in which the first requirement information can be agreed upon by the access network device and the terminal device.

[0268] The first requirement information can be called the first requirement parameter, and the preset correspondence can be called the second correspondence. The first requirement parameter and the second correspondence will be explained below.

[0269] I. First Required Parameters

[0270] The first requirement parameter indicates the configuration requirements of the access network equipment for the transmission parameters of the terminal equipment paging the terminal equipment based on the channel state between the terminal equipment and the access network equipment. The first requirement parameter includes one or more reference requirement parameters, such as maximum repetition count, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0271] Among them, the maximum number of repetitions, DRX cycle, WUS enable flag, paging timing density, and power boost capability have been included. Figure 6 The relevant embodiments are described and will not be repeated here.

[0272] RSRP is the average signal power received on all resource elements (REs) carrying a reference signal within a symbol, and it is used to indicate the channel state of a terminal device.

[0273] The coverage enhancement level (CEL) indicates the coverage enhancement requirement for paging messages. For example, the coverage enhancement level is positively correlated with the coverage enhancement requirement; the coverage enhancement requirement corresponding to coverage enhancement level 0 (CE0) is less than that corresponding to coverage enhancement level 3 (CE3). Taking signal repetition as an example, the number of times a paging message needs to be retransmitted under CE0 is less than the number of times a paging message needs to be retransmitted under CE3.

[0274] The reference demand parameters in the first demand parameter can be used to determine the indicated demand through corresponding preset values ​​or preset ranges.

[0275] The requirement indicated by the preset value corresponding to the reference requirement parameter is that the reference transmission parameter in the first transmission parameter must be equal to the preset value. For example, if the reference requirement parameter is the WUS enable flag, and the WUS enable flag corresponds to a preset value, then it indicates that the WUS enable flag in the first transmission parameter must be the preset value.

[0276] The requirement indicated by the preset interval corresponding to the reference requirement parameter is that the reference transmission parameter corresponding to the first transmission parameter must be within the preset interval. For example, if the reference requirement parameter is the maximum number of repetitions, and the maximum number of repetitions corresponds to a preset interval, then it indicates that the maximum number of repetitions in the first transmission parameter must be within the preset interval.

[0277] Of course, the first requirement parameter can also be other names, quantities, and definitions, and this application does not impose any restrictions.

[0278] In one alternative implementation, the access network device and the terminal device negotiate and determine the first requirement parameter.

[0279] Specifically, the terminal device sends an AS signaling message to the access network device. This AS signaling message includes a first requirement parameter requested by the terminal device, such as an RRC message. If the access network device determines that it accepts the first requirement parameter, it can send an acceptance message to the terminal device. If the access network device determines that it does not accept the first requirement parameter, it can send a rejection message to the terminal device. Furthermore, the access network device can send the first requirement parameter indicated by the access network device when sending the rejection message. For example, the rejection message can be carried in an RRC release message, or the rejection message and the first requirement parameter indicated by the access network device can be carried in an RRC release message.

[0280] Furthermore, the terminal device can also directly report the first requirement parameter to the access network device, or the access network device can directly send the first requirement parameter to the terminal device. For example, the terminal device can carry the first requirement parameter in an RRC message sent to the access network device, such as an RRC connection establishment request message, an RRC connection establishment completion message, or an RRC connection reconfiguration completion message. As another example, the access network device can carry the first requirement parameter in an RRC message sent to the terminal device, such as an RRC release message. The access network device and the terminal device can determine the first requirement parameter without a request and confirmation signaling interaction process.

[0281] Access network devices can send the first requirement parameters to core network devices. If the terminal device is in RRC idle state, the access network device corresponding to the cell to which the terminal device belongs can obtain the first requirement parameters from the core network device. The access network device corresponding to the cell to which the terminal device belongs does not need to negotiate the first requirement parameters with the terminal device again, which helps to avoid frequent negotiation and thus save negotiation signaling.

[0282] II. Second Correspondence

[0283] The second correspondence indicates the correspondence between demand parameters and frequency domain resources.

[0284] In one implementation, the second correspondence includes multiple frequency domain information items, where each frequency domain information item includes frequency domain resources and transmission parameters. In another implementation, the frequency domain information items are frequency domain resources, and the second correspondence includes multiple frequency domain resources and the corresponding transmission parameters for each frequency domain resource.

[0285] For example, the correspondence between frequency domain resources and transmission parameters is shown in Table 5.

[0286] Table 5

[0287] Frequency domain resources Transmission parameters Frequency domain resource 1 Transmission parameter 1 Frequency domain resources 2 Transmission parameter 2 Frequency domain resources 3 Transmission parameter 3 Frequency domain resources 4 Transmission parameter 4

[0288] The second correspondence is illustrated in tabular form, but the second correspondence in this application is not limited to tabular form.

[0289] In the second correspondence described above, frequency domain resource indexes can be used to indicate frequency domain resources. For example, in Table 5 above, index 1 can indicate frequency domain resource 1, and index 2 can indicate frequency domain resource 2. Alternatively, the first correspondence may not have frequency domain resource indexes; instead, the frequency domain resources can be implicitly indicated based on their position in the second correspondence. For example, in Table 5 above, the frequency domain resource in the first position is frequency domain resource 1, and the frequency domain resource in the second position is frequency domain resource 2.

[0290] The transmission parameters include M reference transmission parameters, where M is greater than or equal to 1. These reference transmission parameters include, for example, maximum repetition count, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability. For a detailed explanation, please refer to the description above; further details will not be provided here.

[0291] In one optional example, the transmission parameters include the maximum number of repetitions, the DRX period, and the WUS enable flag, and the second correspondence is shown in Table 6.

[0292] Table 6

[0293] Frequency domain resources Transmission parameters Frequency domain resource 1 Transmission parameter 1 (maximum repetition count 1, DRX period 1, WUS enable flag 1) Frequency domain resources 2 Transmission parameter 2 (maximum number of repetitions 2, DRX period 2, WUS enable flag 2) Frequency domain resources 3 Transmission parameter 3 (maximum number of repetitions 3, DRX period 3, WUS enable flag 3) Frequency domain resources 4 Transmission parameter 4 (maximum repetition count 4, DRX cycle 4, WUS enable flag 4)

[0294] It should be noted that the second correspondences for different cells can be the same or different, and the terminal device can receive the second correspondence for the cell it is camped on from the access network device. In one example, the terminal device is camped on a certain cell, and the access network device broadcasts the second correspondence for that cell to the terminal device. In another example, after the terminal device reselects to the target cell, it requests the second correspondence for that cell from the access network device corresponding to the target cell, and the access network device sends the second correspondence for that cell to the terminal device.

[0295] Based on the above description, such as Figure 9 The flowchart of the third communication method provided in this application is as follows.

[0296] Step 901: The terminal device determines the first frequency domain information based on the first requirement parameter and the second correspondence.

[0297] In one implementation, the terminal device determines first frequency domain information from multiple frequency domain information, wherein the first transmission parameter in the first frequency domain information conforms to the first required parameter. In another implementation, the terminal device determines first frequency domain information from multiple frequency domain information, wherein the first transmission parameter corresponding to the first frequency domain information conforms to the first required parameter.

[0298] The first transmission parameter conforms to the first requirement parameter. Specifically, the first transmission parameter may have N reference transmission parameters that conform to the first requirement parameter, where N is greater than or equal to 1 and less than or equal to M.

[0299] Furthermore, there is a correspondence between the reference transmission parameter in the first transmission parameter and the reference demand parameter in the first demand parameter, and the reference transmission parameter in the first transmission parameter conforms to the demand indicated by the corresponding reference demand parameter in the first demand parameter.

[0300] For example, the first requirement parameter includes reference requirement parameters such as maximum repetition count, DRX period, and WUS enable flag, respectively indicating the maximum repetition count requirement, DRX period requirement, and WUS enable requirement. The terminal device determines the first frequency domain information corresponding to the first requirement parameter in the second correspondence relationship, which can be illustrated by the following example:

[0301] Example 1: The terminal device determines the transmission parameter that meets the corresponding requirements of each reference transmission parameter as the first transmission parameter.

[0302] For example, in Table 6, if the terminal device determines that the maximum repetition count 1 in transmission parameter 1 meets the maximum repetition count requirement, the DRX cycle 1 meets the DRX cycle requirement, and the WUS enable flag 1 meets the WUS enable requirement, then it determines that transmission parameter 1 meets the first requirement parameter and determines transmission parameter 1 as the first transmission parameter.

[0303] Example 2: The terminal device determines the first transmission parameter based on the priority of each reference transmission parameter and the reference transmission parameters that meet the corresponding requirements in the priority sorting of the top N priorities.

[0304] For example, in Table 6, the priority order of each reference transmission parameter from high to low is: maximum repetition count, DRX period, and WUS enable flag. For example, if N=1, and the terminal device determines that the maximum repetition count 1 in transmission parameter 1 meets the maximum repetition count requirement, then transmission parameter 1 meets the first requirement parameter and is designated as the first transmission parameter. Similarly, if N=2, and the terminal device determines that the maximum repetition count 1 in transmission parameter 1 meets the maximum repetition count requirement, and the DRX period 1 meets the DRX period requirement, then transmission parameter 1 meets the first requirement parameter and is designated as the first transmission parameter.

[0305] Furthermore, if the first transmission parameter cannot be determined in Example 1 above, the terminal device may also determine the first transmission parameter based on the priority of each reference transmission parameter, which is the reference transmission parameter that meets the corresponding requirements in the priority sorting of the top N priorities.

[0306] For example, in Table 6, the priority order of each reference transmission parameter from high to low is: maximum repetition count, DRX period, and WUS enable flag. If the terminal device, using the implementation method in Example 1, determines that there is no transmission parameter where all reference transmission parameters meet the corresponding requirements, it can first determine if there are any transmission parameters whose first two priorities meet the corresponding requirements. Specifically, the terminal device determines the transmission parameter whose maximum repetition count meets the maximum repetition count requirement and whose DRX period meets the DRX period requirement as the first transmission parameter. For example, if the terminal device determines that transmission parameter 1's maximum repetition count 1 meets the maximum repetition count requirement and its DRX period 1 meets the DRX period requirement, then transmission parameter 1 meets the first requirement parameter and is designated as the first transmission parameter.

[0307] If the terminal device determines that there is no transmission parameter whose reference transmission parameters for the first two priorities both meet the corresponding requirements, then the terminal device determines whether there is a transmission parameter whose reference transmission parameters for the first priority meet the corresponding requirements. For example, if the terminal device determines that the maximum repetition count 1 in transmission parameter 1 meets the maximum repetition count requirement, then it determines that transmission parameter 1 meets the first requirement parameter and sets transmission parameter 1 as the first transmission parameter.

[0308] In this embodiment of the application, the priority of each reference transmission parameter can be configured by the access network device or predefined by the protocol.

[0309] In the above examples, the terminal device may determine multiple transmission parameters that meet the conditions. For example, in Example 1, the terminal device may determine multiple transmission parameters that each reference transmission parameter meets the corresponding requirements. The frequency domain resources corresponding to these multiple transmission parameters that meet the conditions can be called multiple candidate frequency domain resources. The terminal device can determine the first frequency domain resource from these multiple candidate frequency domain resources based on relation (2) or relation (3).

[0310] In the example above, the terminal device determines the first transmission parameter based on the priority of each reference transmission parameter, which corresponds to the top N priority parameters in the priority ranking and meets the corresponding requirements. The priority can be pre-configured or specified by the protocol, which can improve the flexibility of the determination process.

[0311] Step 902: The access network device determines the first frequency domain information based on the first requirement parameter and the second correspondence.

[0312] In this application, the implementation method of the access network device determining the first frequency domain information based on the second correspondence relationship and the first requirement parameters can be specifically referred to in step 901, which is the implementation method of the terminal device determining the first frequency domain information. It will not be repeated here.

[0313] Step 903: The access network device sends a first message on the resource corresponding to the first frequency domain information.

[0314] In one implementation, the first frequency domain information includes first frequency domain resources and first transmission parameters. The access network device sends a first message using the first transmission parameters on the first frequency domain resources. Correspondingly, the terminal device receives the first message using the first transmission parameters on the first frequency domain resources.

[0315] In another implementation, the first frequency domain information is a first frequency domain resource. The access network device sends a first message on the first frequency domain resource using the first transmission parameters corresponding to the first frequency domain resource. Correspondingly, the terminal device receives the first message on the first frequency domain resource using the first transmission parameters corresponding to the first frequency domain resource.

[0316] Optionally, the terminal device establishes an RRC connection with the access network device based on the first message. For details, please refer to the description of terminal device accessing the network in the prior art, which will not be repeated here.

[0317] It should be noted that the first requirement parameter may change.

[0318] Specifically, the terminal device can determine the channel state of the serving cell and whether the first required parameter has changed by measuring the downlink reference signal of the serving cell. The measurement of the reference signal can include at least one of RSRP, reference signal received quality (RSRQ), signal-to-interference-noise ratio (SINR), or signal-to-noise ratio (SNR). For example, the terminal device detects the reference signal transmitted by its current cell; if the detected change in RSRP exceeds a threshold, or if the detected change in CEL occurs, it determines the current channel state of the current cell and whether the first required parameter has changed.

[0319] If the terminal device determines that the first required parameter has changed, it can send the first request information to the access network device.

[0320] In the first implementation, the first request information includes the updated requirement parameters (hereinafter referred to as the second requirement parameters). After receiving the first request information, the access network device updates the first requirement parameters according to the second requirement parameters. Specifically, the second requirement parameters can be directly replaced with the first requirement parameters.

[0321] In the second implementation, the first request information includes first indication information for instructing the updating of the first requirement parameter. After receiving the first request information, the access network device updates the first requirement parameter according to the first indication information to obtain the second requirement parameter, and then sends the second requirement parameter to the terminal device. This implementation method can have at least the following two examples:

[0322] For example, the first indication information may specifically be the change information of the demand parameter. For instance, compared with the incremental information of the first demand parameter, the access network device adjusts the first demand parameter according to the incremental information to obtain the adjusted demand parameter, which is the second demand parameter.

[0323] In another example, the first request information includes a first indication information for indicating the updating of the first requirement parameter. After receiving the first request information, the access network device determines the second requirement parameter based on the channel state of the uplink between the access network device and the terminal device, and sends the second requirement parameter to the terminal device.

[0324] It should be noted that the second requirement parameter in the first request information of the first implementation can also be understood as the first indication information, which is used to instruct the access network device to replace the first requirement parameter with the second requirement parameter indicated by the first indication information.

[0325] Accordingly, after both the access network device and the terminal device update the first requirement parameters to obtain the second requirement parameters, the access network device and the terminal device can determine the first frequency domain information based on the second requirement parameters and the second correspondence. The access network device and the terminal device then transmit messages on the determined first frequency domain information.

[0326] Furthermore, if the first requirement parameter of the terminal device changes, the access network device can also send a second requirement parameter to the core network device. Thus, when the core network device instructs the second access network device to page a terminal device that is in an idle state, the core network device can send the second requirement parameter to the second access network device.

[0327] In addition, if the terminal device determines that the first required parameter has changed, it can also be implemented in the following ways:

[0328] In one implementation, the access network device can also set default frequency domain information in the second correspondence. If the first requirement parameter of the terminal device changes, the terminal device sends a first request information to the access network device. The terminal device and the access network device can determine the default frequency domain information as the first frequency domain information. If there are multiple default frequency domain information, the multiple default frequency domain information can be used as multiple candidate frequency domain information, and the first frequency domain information can be determined according to the above relationship (2) or relationship (3).

[0329] In another implementation, if the first requirement parameter of the terminal device changes, the terminal device sends a first request information to the access network device, and the terminal device and the access network device can determine the first frequency domain information according to the above relationship (1).

[0330] In both implementations, if the terminal device determines that the first requirement parameter has changed, the implementation method of determining the first frequency domain information based on the first requirement parameter and the second correspondence between the access network device and the terminal device is no longer applicable. In this case, it can fall back to the default frequency domain information or fall back to the method of determining frequency domain information in the prior art, which helps to enhance the robustness of the system.

[0331] In combination with the above Figure 5 or Figure 9 In related embodiments, this application exemplarily provides a specific implementation of paging a terminal device in the RRC idle state. For example, refer to... Figure 10 As shown, the process includes:

[0332] Step 1001: The access network device sends the second correspondence to the terminal device.

[0333] Step 1002: The access network equipment and the terminal equipment negotiate the first required parameters.

[0334] Step 1003: The core network device sends a paging message to the access network device, which is used to request the access network device to page the terminal device.

[0335] Step 1004: The access network device determines the first frequency domain information based on the second correspondence and the first requirement parameters.

[0336] Step 1005: The terminal device determines the first frequency domain information based on the second correspondence and the first requirement parameters.

[0337] Step 1006: The access network device sends paging information to the terminal device. The paging information is paging downlink control information or a paging message.

[0338] In this embodiment, the order of steps 1001 and 1002 is not limited, nor is the order of steps 1004 and 1005.

[0339] The above process may also include: the terminal device switching from the RRC connected state to the RRC idle state. If the terminal device is in the RRC idle state, the access network device can broadcast the information to be sent to the terminal device. For example, the access network device can broadcast the second correspondence to the terminal device. Another example is that the access network device can broadcast the first required parameters to the terminal device.

[0340] Figure 10 For details on the specific implementation methods of each step in the process shown, please refer to [link / reference]. Figure 5 or Figure 9 As described in the relevant embodiments.

[0341] In combination with the above Figure 5 or Figure 9 In related embodiments, this application exemplarily provides a specific implementation of paging a terminal device in an RRC inactive state. For example, refer to... Figure 11 The diagram shows a process for paging a terminal device in an RRC inactive state. The process includes:

[0342] Step 1101: The first access network device sends the second correspondence to the terminal device.

[0343] Step 1102: The first access network device and the terminal device negotiate the first requirement parameters.

[0344] Step 1103: The first access network device sends paging information to the second access network device. The paging information is used to request the second access network device to page the terminal device, and the paging information includes a first requirement parameter.

[0345] Step 1104: The second access network device determines the first frequency domain information based on the second correspondence and the first requirement parameters.

[0346] Here, the second correspondence is the second correspondence configured in the second access network device. The second correspondence configured in different access network devices may be the same or different.

[0347] Step 1105: The terminal device determines the first frequency domain information based on the second correspondence and the first requirement parameters.

[0348] Step 1106: The second access network device sends paging information to the terminal device.

[0349] In this embodiment, the order of steps 1101 and 1102 is not limited, nor is the order of steps 1104 and 1105.

[0350] The above process may further include: the terminal device switching from the RRC connected state to the RRC inactive state. If the terminal device is in the RRC inactive state, the first access network device may broadcast the second correspondence or the first requirement parameter configured in the first access network device to the terminal device. Similarly, the second access network device may also broadcast the second correspondence or the first requirement parameter configured in the second access network device to the terminal device.

[0351] Furthermore, if the terminal device connects to the second access network device, it can negotiate the first requirement parameters with the second access network device. Then, when the terminal device is in the RRC idle state or the RRC inactive state, the second access network device and the terminal device can determine the first frequency domain information based on the second correspondence configured in the second access network device and the negotiated first requirement parameters.

[0352] Figure 11 For details on the specific implementation methods of each step in the process shown, please refer to [link / reference]. Figure 5 or Figure 9 As described in the relevant embodiments.

[0353] In the above technical solution, the access network device and the terminal device negotiate a first requirement parameter, which is associated with the channel state between the access network device and the terminal device. The access network device determines the first frequency domain information based on the first requirement parameter and the second correspondence, and the terminal device determines the first frequency domain information based on the first requirement parameter and the second correspondence. This fully considers the channel state between the access network device and the terminal device. The access network device and the terminal device transmit the first message on the resources corresponding to the first frequency domain information. This solution is suitable for the service characteristics of the terminal device, helps to improve the success rate of the access network device paging the terminal device, and avoids problems such as resource waste or large delays when the terminal device receives the paging message.

[0354] Furthermore, this application also provides an implementation method for when the channel state between the terminal device and the access network device changes; for details, please refer to... Figure 12 The flowchart is shown in the figure.

[0355] Step 1201: The terminal device determines the first channel state with the access network device.

[0356] The terminal device can measure the reference signal from the access network device to obtain the first channel state between the terminal device and the access network device. For example, information used to characterize the first channel state includes RSRP, the decoding status of PDCCH, etc.

[0357] The first channel state can be used to indicate whether the coverage of the terminal device has changed. For example, if the first channel state deteriorates, the terminal device may move from a location with good coverage to a location with poor coverage. Conversely, if the first channel state improves, the terminal device may move from a location with poor coverage to a location with good coverage.

[0358] Step 1202: The terminal device determines the listening frequency domain information for listening to the first message based on the first channel state.

[0359] In one alternative implementation, when the terminal device determines that the first channel state has deteriorated, it can determine to listen to the first message through the second frequency domain information.

[0360] First, let's explain the second frequency domain information. The second frequency domain information can also be called the default frequency domain information. This second frequency domain information can be frequency domain information determined according to the relationship (1). Alternatively, the second frequency domain information can also be pre-configured by the access network device for the terminal device. The access network device can send the pre-configured second frequency domain information to the terminal device through RRC messages or broadcast messages. For example, the access network device can configure one or more second frequency domain information for the terminal device, and the access network device can also configure the same second frequency domain information for multiple terminal devices.

[0361] The relevant configuration parameters in the second frequency domain information, such as maximum repetition count, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability, can meet the needs of terminal equipment and access network equipment to transmit the first message when the channel conditions are poor. For example, the second frequency domain information can be configured with a maximum repetition count greater than the maximum repetition count threshold and a paging timing density greater than the paging timing density threshold.

[0362] In one alternative implementation, the second frequency domain information is used by the access network device to page one or more terminal devices within the cell coverage area, and the one or more terminal devices may be in an environment with poor channel conditions.

[0363] In one optional implementation, if the first channel state satisfies the first condition, the monitored frequency domain information is determined to be the second frequency domain information. The first condition includes: a first RSRP condition and / or a first number condition.

[0364] The first RSRP condition includes one or more of the following:

[0365] (1) The RSRP obtained by measuring the reference signal from the access network equipment is less than the first threshold value;

[0366] (2) The change in RSRP obtained by measuring the reference signal during the first time period is greater than the second threshold value; wherein the first time period can be one or more DRX cycles. For example, the difference between RSRP obtained at the beginning of the first time period and RSRP obtained at the end of the first time period can be used as the change in RSRP, or the difference between the maximum RSRP and the minimum RSRP during the first time period can be used as the change in RSRP, etc.

[0367] The first number condition includes one or more of the following:

[0368] (1) The maximum number of repetitions required to successfully decode the PDCCH is greater than the third threshold value;

[0369] (2) The proportion (or number of times) of successfully decoding PDCCH in the second time period is less than the fourth threshold value; wherein the second time period can be one or more DRX cycles; for example, the fourth threshold value is 0.5, and the terminal device decodes PDCCH a total of 10 times in the second time period, of which 6 times are successfully decoded, then the proportion of successfully decoding PDCCH by the terminal device in the second time period is 0.6, which is greater than the fourth threshold value.

[0370] (3) The number of times the WUS indicates that the first message has been successfully decoded after the PDCCH is less than the fifth threshold value during the third time period; where the third time period can be one or more DRX cycles;

[0371] (4) The difference between the number of repetitions required to successfully decode the PDCCH in the first DRX cycle and the number of repetitions required to successfully decode the PDCCH in the second DRX cycle is greater than the sixth threshold. The first DRX cycle is one DRX cycle preceding the second DRX cycle. For example, if the sixth threshold is 4, the number of repetitions required to successfully decode the PDCCH in the first DRX cycle is 3, and the number of repetitions required to successfully decode the PDCCH in the second DRX cycle is 8. The difference between the two is 5, which is greater than the sixth threshold.

[0372] The first, second, and third time periods can be pre-configured by the access network equipment to the terminal equipment. The first, second, third, fourth, fifth, and sixth threshold values ​​can also be pre-configured by the access network equipment to the terminal equipment, or... Figures 5 to 11 The relevant threshold value in the first frequency domain information in the relevant method embodiment.

[0373] In another alternative implementation, when the terminal device determines that the first channel state has improved, it can determine to listen to the first message through the third frequency domain information.

[0374] First, let's explain the third frequency domain information. This information is determined simultaneously by the access network device and the terminal device. It is specific to a single terminal device and is at the terminal device level. For example, terminal device 1 has third frequency domain information 1, and terminal device 2 has third frequency domain information 2. The access network device pagees terminal device 1 based on third frequency domain information 1, and correspondingly, terminal device 1 listens for paging based on third frequency domain information 1. The access network device pagees terminal device 2 based on third frequency domain information 2, and correspondingly, terminal device 3 listens for paging based on third frequency domain information 2.

[0375] For example, the third frequency domain information is either the first frequency domain information or the fourth frequency domain information.

[0376] Optionally, the first frequency domain information is determined by the terminal device within the first cell provided by the access network device, based on the first demand information and a preset correspondence. The first demand information is used to indicate the resource requirements of the terminal device when transmitting messages with the access network device. For details, please refer to... Figures 5 to 11 The implementation method for determining the first frequency domain information in the relevant embodiments.

[0377] Optionally, the fourth frequency domain information is the frequency domain information determined by the access network device for the terminal device when the terminal device is in the RRC connection state, based on the channel state information between the terminal device and the access network device, such as RSRP, or based on the UE specific DRXcycle of the terminal device.

[0378] In one optional implementation, if the first channel state satisfies the second condition, the monitored frequency domain information is determined to be the third frequency domain information. The second condition includes: a second RSRP condition and / or a second number condition.

[0379] The second RSRP condition includes: the RSRP obtained by measuring the reference signal from the access network equipment is greater than the seventh threshold value;

[0380] The second degree condition includes one or more of the following:

[0381] (1) The maximum number of repetitions required to successfully decode the PDCCH is less than the eighth threshold value;

[0382] (2) The proportion (or number of times) of successfully decoded PDCCH in the fourth time period is greater than the ninth threshold; where the fourth time period can be one or more DRX cycles;

[0383] (3) The number of times the WUS indicates that the first message has been successfully decoded after the PDCCH is greater than the tenth threshold value in the fifth time period; where the fifth time period can be one or more DRX cycles.

[0384] The fourth and fifth time periods can be pre-configured by the access network equipment to the terminal equipment. The eighth, ninth, and tenth thresholds can also be pre-configured by the access network equipment to the terminal equipment, or... Figures 5 to 11 The relevant threshold value in the first frequency domain information in the relevant method embodiment.

[0385] It should be noted that in step 1202, the terminal device determining the monitoring frequency domain information based on the first channel state can be interpreted as follows: In one example, if the first channel state between the terminal device and the access network device deteriorates (i.e., the first condition is met, or the second condition is not met), the terminal device can change the monitoring frequency domain information from the third frequency domain information to the second frequency domain information based on the currently determined first channel state, and the terminal device monitors the first message based on the second frequency domain information. In another example, if the first channel state between the terminal device and the access network device improves (i.e., the second condition is met, or the first condition is not met), the terminal device can change the monitoring frequency domain information from the second frequency domain information to the third frequency domain information based on the currently determined first channel state, and the terminal device monitors the first message based on the third frequency domain information.

[0386] It should also be noted that if the duration for which the first channel state between the terminal device and the access network device does not meet the second condition (i.e., meets the first condition) exceeds the first preset duration, the terminal device and the access network device can re-establish communication. Figures 5 to 11 In the relevant method embodiments, the new first frequency domain information is determined, or the access network device reconfigures the new fourth frequency domain information for the terminal device based on the channel state between the access network device and the terminal device.

[0387] In one alternative implementation, after a cell reselection occurs, the listening frequency domain information used by the terminal device to listen for the first message may or may not change. This can be explained in two scenarios: Scenario 1 involves the terminal device reselecting from the first cell to another cell (referred to as the third cell); Scenario 2 involves the terminal device reselecting from another cell (referred to as the second cell) back to the first cell.

[0388] In scenario one, when a terminal device moves from cell one to cell three via cell reselection, the terminal device can determine whether the current listening frequency domain information has changed or not. For example, if the terminal device is in cell one and is listening to the first message using the second frequency domain information, it will continue to listen to the first message using the second frequency domain information after moving to cell three. Alternatively, if the terminal device is in cell one and is listening to the first message using the third frequency domain information, it will continue to listen to the first message using the second frequency domain information after moving to cell three.

[0389] Scenario 2: When the terminal device moves from the second cell to the first cell through cell reselection, the terminal device can determine whether the current listening frequency domain information has changed or not. For example, if the terminal device is in the second cell and is listening to the first message through the second frequency domain information, it will still be listening to the first message through the second frequency domain information after moving to the first cell; or, for another example, if the terminal device is in the second cell and is listening to the first message through the second frequency domain information, it will be listening to the first message through the third frequency domain information after moving to the first cell.

[0390] In this embodiment, the third cell and the second cell may be the same or different. The terminal device may move from the first cell to the third cell via a first reselection, and then move back to the first cell via a second reselection from the third cell. Alternatively, the terminal device may move from the first cell to the third cell via a first reselection, then move to the second cell via one or more reselections from the third cell, and then move back to the first cell via a final reselection from the second cell.

[0391] In one alternative approach, after a cell reselection occurs, such as when the terminal device moves from the first cell to the third cell, the terminal device can delete the third frequency domain information. When the terminal device moves from the second cell to the first cell, the terminal device can use the second frequency domain information to listen for the first message from the access network device.

[0392] In another alternative approach, after a cell reselection occurs, such as when the terminal device moves from the first cell to the third cell, the terminal device can continue to retain the third frequency domain information. When the terminal device moves from the second cell to the first cell, it can reuse the third frequency domain information to listen for the first message from the access network device if the second channel state of the terminal device and the access network device meets the fourth condition.

[0393] In one alternative approach, the terminal device moves from the second cell back to the first cell via cell reselection. The terminal device determines the second channel state of the terminal device and the access network device in the first cell. If the second channel state meets the fourth condition, the monitoring frequency domain information is determined to change from the second frequency domain information to the third frequency domain information.

[0394] The fourth condition may be the same as or different from the second condition. For example, the fourth condition includes: (1) the maximum number of repetitions required to successfully decode the PDCCH is less than the twelfth threshold, where the twelfth threshold is less than or equal to the eighth threshold; (2) the proportion (or number of times) of successfully decoding the PDCCH in the fourth time period is greater than the thirteenth threshold, where the thirteenth threshold is greater than or equal to the ninth threshold; (3) the number of times the PDCCH is successfully decoded after the WUS indicates the existence of the first message in the fifth time period is greater than the fourteenth threshold, where the fourteenth threshold is greater than or equal to the tenth threshold.

[0395] When the second channel state meets the fourth condition, the terminal device listens for the first message through the third frequency domain information. This can be understood as the relevant configuration parameters in the third frequency domain information, such as the maximum number of repetitions, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability, can meet the needs of the terminal device and the access network device to transmit the first message when the second channel state meets the fourth condition.

[0396] Step 1203: The terminal device receives the first message from the access network device on the resource corresponding to the listening frequency domain information.

[0397] It should be noted that access network devices may not be aware of changes in the listening frequency domain information of terminal devices. For example, if the terminal device's listening frequency domain information changes from the third frequency domain to the second frequency domain, and the access network device attempts to page the terminal device using the third frequency domain information, it will be unable to page the terminal device.

[0398] In one example, if an access network device attempts to page a terminal device using third frequency domain information, and fails to page successfully after K attempts, the access network device can then page the terminal device using second frequency domain information, or by using third frequency domain information and second frequency domain information, where K is greater than or equal to 1.

[0399] In the above technical solution, the terminal device determines the first channel state between itself and the access network device, and determines the listening frequency domain information used to listen to the first message based on the first channel state. Specifically, when the channel state between the terminal device and the access network device is poor (i.e., the first condition is met, or the second condition is not met), the terminal device can choose to listen to the first message through the second frequency information. The second frequency domain information can support the terminal device to communicate normally with the access network device at any location within the cell coverage. That is, the second frequency domain information is used by the access network device to page one or more terminal devices at any location within the cell coverage, and the one or more terminal devices can be in an environment with poor channel state. Therefore, under poor channel state, the probability of successful listening and paging is increased, which helps to enhance the robustness of the system.

[0400] When the channel condition between the terminal device and the access network device is good (i.e., the second condition is met, or the first condition is not met), the terminal device can choose to listen to the first message through the third frequency information. This third frequency domain information is granular to the terminal device, and the third frequency domain information corresponding to different terminal devices is different, which helps to improve the utilization rate of frequency domain information in the communication system.

[0401] Moreover, in this method, when the state of the first channel changes, the terminal device and the access network device do not immediately determine the new third frequency domain information. Instead, they use the pre-configured second frequency domain information, which can reduce the signaling interaction between the terminal device and the access network device and also help reduce the power consumption of the terminal device.

[0402] Furthermore, this application also provides an implementation method for an access network device to determine when the channel state change between it and a terminal device is relatively small. Specifically, see [example provided]. Figure 13 The flowchart is shown in the figure.

[0403] Step 1301: When the third channel state between the access network device and the terminal device meets the third condition, the access network device determines the listening frequency domain information for sending the first message.

[0404] The access network equipment determines that the third channel state meets the third condition, which may include any one or more of the following:

[0405] (1) The access network device obtains the third indication information of the terminal device from the core network device. The third indication information is used to indicate that the terminal device is in a stationary state. For example, the core network device stores the registration information of the terminal device, which includes the third indication information of the terminal device. The third indication information can be the service type of the terminal device, such as water and electricity meters, wearable devices, smoke detectors, streetlights, user mobile phones, etc. The access network device can determine whether the terminal device is in a stationary state based on the service type. For example, if the service type of the terminal device is a water and electricity meter, the access network device determines that the terminal device is in a stationary state. If the service type of the terminal device is a user mobile phone, the access network device determines that the terminal device is in a non-stationary state.

[0406] (2) The change in the third channel state during the sixth time period is less than the eleventh threshold; wherein the sixth time period can be one or more DRX cycles. For example, the access network device can determine the third channel state between itself and the terminal device, and then determine whether the change in the third channel state is less than the eleventh threshold. For example, the third channel state can be assessed by the access network device itself, or it can be reported to the access network device by the terminal device.

[0407] (3) The access network device obtains the fourth indication information of the terminal device from the terminal device. The fourth indication information is used to indicate that the terminal device is in a stationary state. This fourth indication information may be sent by the terminal device to the access network device when it determines that it is in a stationary state by sensing the surrounding environment, or it may be sent by the terminal device to the access network device when it measures the reference signal from the access network device and determines that it is in a stationary state based on the measurement result. The fourth indication information may also be the service type of the terminal device, such as water and electricity meters, wearable devices, smoke detectors, streetlights, user mobile phones, etc.

[0408] The sixth time period can be pre-configured by the access network equipment to the terminal equipment. The eleventh threshold can also be pre-configured by the access network equipment to the terminal equipment, or as... Figures 5 to 11 The relevant threshold value in the third frequency domain information in the relevant method embodiments.

[0409] In this embodiment, the monitoring frequency domain information includes third frequency domain information and / or second frequency domain information. For details, please refer to [link to relevant documentation]. Figure 12As described in the relevant embodiments.

[0410] In one alternative approach, after the access network device determines that the third channel state meets the third condition, the access network device sends first configuration information to the terminal device. For example, the first configuration information includes third frequency domain information, which may be first frequency domain information or fourth frequency domain information.

[0411] In another alternative approach, after the access network device determines that the third channel state meets the third condition, the access network device sends second configuration information to the terminal device. For example, the second configuration information includes second frequency domain information.

[0412] For example, the first configuration information can be carried in RRC signaling or in a broadcast message, and the second configuration information can be carried in RRC signaling or in a broadcast message.

[0413] Step 1302: The access network device sends a first message to the terminal device on the resource corresponding to the monitored frequency domain information.

[0414] Optionally, if the third channel state meets the third condition, the terminal device will no longer execute the implementation methods in steps 1201 to 1203 above, thereby reducing the power consumption of the terminal device.

[0415] In the above technical solutions, if the access network device determines that the terminal device is stationary, or determines that the channel state between the access network device and the terminal device changes little, then it can determine that a fixed frequency domain can be used to page the terminal device. For example, the access network device determines the first frequency domain information based on the first demand information and a preset correspondence, and uses the first frequency domain information to page the terminal device. Alternatively, the access network device can also determine a fourth frequency domain information applicable to the terminal device based on the channel state information between the access network device and the terminal device. Or, the access network device can also allocate a second frequency domain information to the terminal device, and use the second frequency domain information to page the terminal device.

[0416] It should be added that, in this embodiment, after the access network device pages the terminal device on the resource corresponding to the monitored frequency domain information and establishes an RRC connection with the terminal device, it can also release the terminal device to the RRC idle state. The access network device can save the beam information corresponding to the terminal device, so that the access network device can continue to use the beam information corresponding to the terminal device when it needs to page the terminal device again. Alternatively, the access network device can also send the beam information corresponding to the terminal device to the core network device, so that the core network device can send the beam information corresponding to the terminal device to the access network device used for paging the terminal device when it needs to page the terminal device. For example, the beam information corresponding to the terminal device can specifically be the identification information of the terminal device and the beam information corresponding to the identification information. The beam information may include a beam index, etc.

[0417] Based on this, access network devices can page terminal devices on one or a few beams based on the stored beam information corresponding to the terminal devices, or based on the beam information corresponding to the terminal devices obtained from the core network devices, thereby helping to save energy consumption of access network devices.

[0418] The various embodiments described herein can be independent solutions or combinations thereof based on their inherent logic, and all such solutions fall within the protection scope of this application.

[0419] It is understood that, in the above-described method embodiments, the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device (access network device or core network device) can also be implemented by components (such as chips or circuits) that can be used in the network device.

[0420] In the embodiments provided above, the methods provided by the embodiments of this application have been described from the perspective of interaction between various devices. To implement the functions of the methods provided in the embodiments of this application, the terminal device and the network device may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0421] The module division in this embodiment is illustrative and represents only one logical functional division; in actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0422] Based on the above content and the same concept, Figure 14 and Figure 15 This is a schematic diagram of the possible communication devices provided in this application. These communication devices can be used to implement the functions of the terminal device or access network device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.

[0423] When the communication device 1400 is used to implement Figures 5 to 11 The access network device in the method embodiment shown functions as follows:

[0424] In one possible implementation, the communication device 1400 includes: a processing unit 1401, configured to determine first frequency domain information, wherein the first frequency domain information is frequency domain information corresponding to first demand information in a preset correspondence, and the first demand information is used to indicate the resource requirements when the communication unit 1402 transmits messages to the terminal device; the communication unit 1402 is configured to send a first message to the terminal device on the resources corresponding to the first frequency domain information.

[0425] In one possible implementation, the first message is used to page the terminal device.

[0426] In one possible implementation, the first requirement information is requirement information from the core network device, the terminal device, or the first access network device.

[0427] In one possible implementation, the first requirement information is a first requirement level from the core network equipment, and the first frequency domain information is the frequency domain information corresponding to the first requirement level in the preset correspondence.

[0428] In one possible implementation, the first requirement level includes one or more of a latency requirement level, a coverage requirement level, and a paging probability level.

[0429] In one possible implementation, the first requirement information is a first requirement parameter from the terminal device, and the first frequency domain information is the frequency domain information of the corresponding transmission parameters in the preset correspondence that satisfy the first requirement parameter.

[0430] In one possible implementation, the transmission parameters include M reference transmission parameters, each of which corresponds to one of the M priorities. The N reference transmission parameters corresponding to the first frequency domain information satisfy the first requirement parameters. The N priorities corresponding to the N reference transmission parameters are the top N priorities of the M priorities in descending order, where N is less than or equal to M and N is a positive integer.

[0431] In one possible implementation, the first requirement parameter includes one or more of the following parameters: maximum number of repetitions, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0432] In one possible implementation, the communication unit 1402 is further configured to receive first request information from the terminal device, the first request information including first indication information, the first indication information being used to indicate updating the first requirement parameter; the communication unit 1402 is further configured to send a second requirement parameter to the terminal device, the second requirement parameter being the updated first requirement parameter. Optionally, the first indication information is the second requirement parameter.

[0433] In one possible implementation, the terminal device is in an RRC inactive state, and the context of the terminal device is stored in the first access network device; the communication unit 1402 is further configured to request the context of the terminal device from the first access network device, the context of the terminal device including the first request information; and to receive the context of the terminal device from the first access network device.

[0434] In one possible implementation, the transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability; the communication unit 1402 is specifically used to send the first message to the terminal device using the transmission parameters corresponding to the frequency domain resources included in the first frequency domain information.

[0435] In one possible implementation, the communication unit 1402 is further configured to send the preset correspondence to the terminal device.

[0436] When the communication device 1400 is used to implement Figures 5 to 11 The terminal device shown in the method embodiment has the following functions:

[0437] In one possible implementation, the communication device 1400 includes: a processing unit 1401, configured to determine first frequency domain information, wherein the first frequency domain information is frequency domain information corresponding to first demand information in a preset correspondence, and the first demand information is used to indicate the resource requirements when the communication unit 1402 transmits messages with the access network device; the communication unit 1402 is configured to receive a first message from the access network device on the resources corresponding to the first frequency domain information.

[0438] In one possible implementation, the first message is used to page the communication device.

[0439] In one possible implementation, the first requirement information is a first requirement level from the core network equipment, and the first frequency domain information is the frequency domain information corresponding to the first requirement level in the preset correspondence.

[0440] In one possible implementation, the first requirement level includes one or more of a latency requirement level, a coverage requirement level, and a paging probability level.

[0441] In one possible implementation, the communication unit 1402 is further configured to send a second request message to the core network device, the second request message including second indication information, the second indication information being used to update the first demand level; the communication unit 1402 is further configured to receive a second demand level from the core network device, the second demand level being the updated first demand level. Optionally, the second indication information is the second demand level.

[0442] In one possible implementation, the first requirement information is a first requirement parameter sent by the communication unit 1402 to the access network device, and the first frequency domain information is the frequency domain information of the corresponding transmission parameters in the preset correspondence that satisfy the first requirement parameter.

[0443] In one possible implementation, the transmission parameters include M reference transmission parameters, each of which corresponds to one of the M priorities. The N reference transmission parameters corresponding to the first frequency domain information conform to the first requirement parameters. The N priorities corresponding to the N reference transmission parameters are the first N priorities ordered from high to low among the M priorities, where N is less than or equal to M and N is a positive integer.

[0444] In one possible implementation, the first requirement parameter includes one or more of the following parameters: maximum number of repetitions, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0445] In one possible implementation, the communication unit 1402 is further configured to send a first request message to the access network device, the first request message including first indication information, the first indication information being used to update the first requirement parameter; the communication unit 1402 is further configured to receive a second requirement parameter from the access network device, the second requirement parameter being the updated first requirement parameter. Optionally, the first indication information is the second requirement parameter.

[0446] In one possible implementation, the transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability; the communication unit 1402 is specifically used to receive the first message from the access network device on the frequency domain resources included in the first frequency domain information using the transmission parameters corresponding to the frequency domain resources.

[0447] In one possible implementation, the communication unit 1402 is further configured to receive the preset correspondence from the access network device.

[0448] When the communication device 1400 is used to implement Figures 5 to 11 The core network device in the method embodiment shown has the following functions:

[0449] In one possible implementation, the communication device 1400 includes: a processing unit 1401, configured to determine first demand information, the first demand information being used to indicate resource requirements when a terminal device transmits messages with an access network device; and a communication unit 1402, configured to send the first demand information to the access network device.

[0450] In one possible implementation, the first demand information is a first demand level, which includes one or more of the following: latency demand level, coverage demand level, and paging probability level.

[0451] In one possible implementation, the processing unit 1401 is specifically used to control the communication unit 1402 to receive the first demand level requested by the terminal device, determine the first demand level as first demand information, and control the communication unit 1402 to send acceptance information to the terminal device.

[0452] In one possible implementation, the processing unit 1401 is specifically configured to control the communication unit 1402 to receive second request information from the terminal device, the second request information including second indication information used to update the first demand level; and to control the communication unit 1402 to send a second demand level to the terminal device, the second demand level being the updated first demand level. Optionally, the second indication information is the second demand level.

[0453] In one possible implementation, the first requirement information is a first requirement parameter, which includes one or more of the following parameters: maximum number of repetitions, RSRP, coverage enhancement level, DRX cycle, WUS enable flag, paging timing density, and power boost capability.

[0454] In one possible implementation, the context of the terminal device is stored in a first access network device, and the context of the terminal device stores a first requirement parameter. The access network device is a second access network device, and the processing unit 1401 is specifically used to control the communication unit 1402 to obtain the first requirement parameter from the first access network device.

[0455] When the communication device 1400 is used to implement Figure 12 The terminal device in the method embodiment has the following functions:

[0456] In one possible implementation, the communication device 1400 includes: a processing unit 1401, configured to determine a first channel state with an access network device; and, based on the first channel state, determine monitoring frequency domain information for monitoring a first message; and a communication unit 1402, configured to receive the first message from the access network device on the resource corresponding to the monitoring frequency domain information.

[0457] In one possible implementation, the first message is used to page the communication device.

[0458] In one possible implementation, the processing unit 1401 is configured to: determine the monitored frequency domain information as second frequency domain information when the first channel state satisfies a first condition, wherein the first condition includes: a first RSRP condition and / or a first count condition; the first RSRP condition includes any one or more of the following: the RSRP obtained by measuring the reference signal from the access network device is less than a first threshold; the change amplitude of the RSRP obtained by measuring the reference signal in the first time period is greater than a second threshold; the first count condition includes any one or more of the following: the maximum number of repetitions required to successfully decode the PDCCH is greater than a third threshold; the proportion of successfully decoded PDCCH in the second time period is less than a fourth threshold; the number of times the PDCCH is successfully decoded after the WUS indicates the existence of the first message in the third time period is less than a fifth threshold; the difference between the number of repetitions required to successfully decode the PDCCH in the first DRX period and the number of repetitions required to successfully decode the PDCCH in the second DRX period is greater than a sixth threshold, wherein the first DRX period is a DRX period preceding the second DRX period.

[0459] In one possible implementation, the processing unit 1401 is configured to: determine the monitored frequency domain information as third frequency domain information when the first channel state satisfies the second condition, wherein the second condition includes: a second RSRP condition and / or a second count condition; the second RSRP condition includes: the RSRP obtained by measuring the reference signal from the access network device is greater than a seventh threshold; the second count condition includes any one or more of the following: the maximum number of repetitions required to successfully decode the PDCCH is less than an eighth threshold; the proportion of successfully decoded PDCCH in the fourth time period is greater than a ninth threshold; the number of times the PDCCH is successfully decoded after the WUS indicates the existence of the first message in the fifth time period is greater than a tenth threshold.

[0460] In one possible implementation, the third frequency domain information is determined within the first cell provided by the access network device based on first demand information and a preset correspondence. The first demand information is used to indicate the resource requirements when transmitting messages with the access network device.

[0461] In one possible implementation, the processing unit 1401 is further configured to: after receiving the first message from the access network device on the resource corresponding to the listening frequency domain information, reselect from the second cell to the first cell; and, if the second channel state with the access network device satisfies the second condition, control the communication unit 1402 to receive the first message from the access network device on the resource corresponding to the third frequency domain information.

[0462] When the communication device 1400 is used to implement Figure 13 When implementing the method embodiment, the access network device functions as follows:

[0463] In one possible implementation, the communication device 1400 includes: a processing unit 1401, configured to determine monitoring frequency domain information for sending a first message when the third channel state between the device and the terminal device satisfies a third condition; and a communication unit 1402, configured to send the first message to the terminal device on the resource corresponding to the monitoring frequency domain information.

[0464] In one possible implementation, the communication device 1400 includes: the first message being used to page a terminal device.

[0465] In one possible implementation, the communication device 1400 includes: the third channel state with the terminal device satisfying a third condition including any one or more of the following: obtaining third indication information of the terminal device from the core network device, the third indication information being used to indicate that the terminal device is in a stationary state; obtaining fourth indication information of the terminal device from the terminal device, the fourth indication information being used to indicate that the terminal device is in a stationary state; and the change in the third channel state within a sixth time period being less than an eleventh threshold value.

[0466] like Figure 15 The image shown is of the apparatus 1500 provided in an embodiment of this application. Figure 15 The device shown can be Figure 14 The illustrated device represents one implementation of a hardware circuit. This communication device is applicable to... Figures 5 to 11 In the flowchart shown, the functions of the terminal device, access network device, or core network device in the above method embodiments are executed, and can also be applied to... Figure 12 The flowchart shown illustrates the function of the terminal device in the above method embodiments, which can also be applied to... Figure 13 The flowchart shown illustrates the function of the access network device in the above method embodiment.

[0467] For ease of explanation, Figure 15 Only the main components of the communication device are shown.

[0468] Figure 15 The illustrated device 1500 includes at least one processor 1520 for implementing the embodiments provided in this application. Figures 5 to 13 Any of the methods.

[0469] The device 1500 may further include at least one memory 1530 for storing program instructions and / or data. The memory 1530 is coupled to the processor 1520. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, for information exchange between devices, units, or modules. The processor 1520 may operate in conjunction with the memory 1530. The processor 1520 may execute program instructions stored in the memory 1530. At least one of the at least one memories may be included in the processor.

[0470] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0471] It should be noted that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processing circuit (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0472] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0473] Device 1500 may further include a communication interface 1510 for communicating with other devices via a transmission medium, thereby enabling devices in device 1500 to communicate with other devices. In this embodiment, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. In this embodiment, when the communication interface is a transceiver, the transceiver may include an independent receiver, an independent transmitter, or a transceiver integrating transceiver functions, or an interface circuit.

[0474] Device 1500 may further include a communication line 1540. The communication interface 1510, processor 1520, and memory 1530 can be interconnected via the communication line 1540. The communication line 1540 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The communication line 1540 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 15 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0475] Based on the above and the same concept, this application provides a communication device, including a processor and a communication interface. The communication interface is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device. The processor is used to implement the above through logic circuits or executable code instructions. Figures 5 to 11 The function of the terminal device in the method embodiment shown, or Figures 5 to 11 The function of the access network device in the method embodiment shown, or Figures 5 to 11 The core network device functions of the method embodiment shown, or Figure 12 The function of the terminal device in the method embodiment shown, or Figure 13 The method embodiment shown illustrates the function of the access network device.

[0476] Based on the foregoing content and the same concept, this application provides a computer-readable storage medium storing a computer program or instructions, which, when executed by a communication device, implements the aforementioned... Figures 5 to 11 The function of the terminal device in the method embodiment shown, or Figures 5 to 11 The function of the access network device in the method embodiment shown, or Figures 5 to 11 The core network device functions of the method embodiment shown, or Figure 12 The function of the terminal device in the method embodiment shown, or Figure 13 The method embodiment shown illustrates the function of the access network device.

[0477] Based on the above content and the same concept, this application provides a computer program product, which includes a computer program or instructions, and when the computer program or instructions are executed by a communication device, implements the above-mentioned... Figures 5 to 11 The function of the terminal device in the method embodiment shown, or Figures 5 to 11 The function of the access network device in the method embodiment shown, or Figures 5 to 11 The core network device functions of the method embodiment shown, or Figure 12 The function of the terminal device in the method embodiment shown, or Figure 13 The method embodiment shown illustrates the function of the access network device.

[0478] Based on the above and the same concept, this application provides a chip, including at least one processor and an interface; the interface is used to provide program instructions or data to the at least one processor; the at least one processor is used to execute the program instructions to implement the above. Figures 5 to 11 The function of the terminal device in the method embodiment shown, or Figures 5 to 11 The function of the access network device in the method embodiment shown, or Figures 5 to 11 The core network device functions of the method embodiment shown, or Figure 12 The function of the terminal device in the method embodiment shown, or Figure 13 The method embodiment shown illustrates the function of the access network device.

[0479] Based on the above content and the same concept, this application provides a communication system, including the above-mentioned... Figures 5 to 11 The terminal device in the method embodiment shown above Figures 5 to 11 The access network device of the method embodiment shown above, and the above-mentioned Figures 5 to 11 The core network device of the method embodiment shown, or Figure 12 The function of the terminal device in the method embodiment shown, or Figure 13 The method embodiment shown illustrates the function of the access network device.

[0480] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) containing computer-usable program code.

[0481] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0482] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0483] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A communication method, characterized in that, include: Determine the first frequency domain information, which is the frequency domain information corresponding to the first requirement information in the preset correspondence relationship. The first requirement information is used to indicate the resource requirements when transmitting messages with the terminal device. Send a first message to the terminal device on the resource corresponding to the first frequency domain information; The first demand information is the first demand level, which includes one or more of the following: latency demand level, coverage demand level, and paging probability level. The method further includes: Receive a second demand level from the core network equipment, where the second demand level is an updated first demand level; or, The first requirement information is the first requirement parameter, which includes one or more of the following parameters: maximum number of repetitions, reference signal received power RSRP, coverage enhancement level, discontinuous reception DRX cycle, wake-up signal WUS enable flag, paging timing density, and power boost capability. The method further includes: The system receives a first request message from the terminal device, the first request message including a first indication message, the first indication message being used to update the first requirement parameter.

2. The method as described in claim 1, characterized in that, The first message is used to page the terminal device.

3. The method as described in claim 1, characterized in that, The first requirement information is requirement information from core network equipment, terminal equipment, or first access network equipment.

4. The method as described in claim 1, characterized in that, If the first requirement information is a first requirement parameter, the method further includes: Send a second requirement parameter to the terminal device, wherein the second requirement parameter is an updated first requirement parameter.

5. The method as described in claim 1, characterized in that, The terminal device is in a Radio Resource Control (RRC) inactive state, and the first demand information is demand information from the first access network device, including: The first access network device requests the context of the terminal device, wherein the context of the terminal device includes the first request information; Receive the context from the terminal device of the first access network device.

6. The method according to any one of claims 1 to 5, characterized in that, The transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability. Sending the first message to the terminal device on the resource corresponding to the first frequency domain information includes: The first message is sent to the terminal device using the transmission parameters corresponding to the frequency domain resources included in the first frequency domain information.

7. A communication method, characterized in that, include: Determine the first frequency domain information, which is the frequency domain information corresponding to the first requirement information in the preset correspondence relationship. The first requirement information is used to indicate the resource requirements when transmitting messages with the access network device. Receive a first message from the access network device on the resource corresponding to the first frequency domain information; The first demand information is the first demand level, which includes one or more of the following: latency demand level, coverage demand level, and paging probability level. The method further includes: Send a second request message to the core network device. The second request message includes a second indication message. The second indication message is used by the core network device to update the first demand level to obtain a second demand level. The second demand level is sent by the core network device to the access network device. or, The first requirement information is the first requirement parameter, which includes one or more of the following parameters: maximum number of repetitions, reference signal received power RSRP, coverage enhancement level, discontinuous reception DRX cycle, wake-up signal WUS enable flag, paging timing density, and power boost capability. The method further includes: Send a first request message to the access network device. The first request message includes a first indication message, which is used to update the first requirement parameter.

8. The method as described in claim 7, characterized in that, The first message is used to page the terminal device.

9. The method as described in claim 7, characterized in that, If the first requirement information is a first requirement parameter, the method further includes: Receive a second requirement parameter from the access network device, wherein the second requirement parameter is an updated first requirement parameter.

10. The method according to any one of claims 7 to 9, characterized in that, The transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability. Receiving a first message from the access network device on the resource corresponding to the first frequency domain information includes: On the frequency domain resources included in the first frequency domain information, the first message from the access network device is received using the transmission parameters corresponding to the frequency domain resources.

11. A communication device, characterized in that, include: Processing unit, configured to determine first frequency domain information, the first frequency domain information being frequency domain information corresponding to first demand information in a preset correspondence, the first demand information being used to indicate the resource requirements when the communication unit transmits messages to the terminal device; The communication unit is used to send a first message to the terminal device on the resource corresponding to the first frequency domain information; The first demand information is the first demand level, which includes one or more of the following: latency demand level, coverage demand level, and paging probability level. The communication unit is also configured to receive a second demand level from the core network equipment, wherein the second demand level is an updated first demand level; or, The first requirement information is the first requirement parameter, which includes one or more of the following parameters: maximum number of repetitions, reference signal received power RSRP, coverage enhancement level, discontinuous reception DRX cycle, wake-up signal WUS enable flag, paging timing density, and power boost capability. The communication unit is further configured to receive first request information from the terminal device, the first request information including first indication information, the first indication information being used to update the first requirement parameter.

12. The apparatus as claimed in claim 11, characterized in that, The first message is used to page the terminal device.

13. The apparatus as claimed in claim 11, characterized in that, The first requirement information is requirement information from core network equipment, terminal equipment, or first access network equipment.

14. The apparatus as claimed in claim 11, characterized in that, If the first requirement information is a first requirement parameter, the communication unit is further configured to send a second requirement parameter to the terminal device, wherein the second requirement parameter is an updated first requirement parameter.

15. The apparatus as claimed in claim 11, characterized in that, The terminal device is in a non-active state of Radio Resource Control (RRC). The context of the terminal device is stored in the first access network device. The communication unit is also used to request the context of the terminal device from the first access network device. The context of the terminal device includes the first request information. And receive the context from the terminal device of the first access network device.

16. The apparatus according to any one of claims 11 to 15, characterized in that, The transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability; the communication unit is specifically used to send the first message to the terminal device using the transmission parameters corresponding to the frequency domain resources included in the first frequency domain information.

17. A communication device, characterized in that, include: The processing unit is configured to determine first frequency domain information, which is frequency domain information corresponding to first demand information in a preset correspondence relationship. The first demand information is used to indicate the resource requirements when the communication unit transmits messages with the access network device. The communication unit is configured to receive a first message from the access network device on the resource corresponding to the first frequency domain information; The first demand information is the first demand level, which includes one or more of the following: latency demand level, coverage demand level, and paging probability level. The communication unit is further configured to send a second request message to the core network device, the second request message including a second indication message, the second indication message being used by the core network device to update the first demand level to obtain a second demand level, the second demand level being sent by the core network device to the access network device; or, The first requirement information is the first requirement parameter, which includes one or more of the following parameters: maximum number of repetitions, reference signal received power RSRP, coverage enhancement level, discontinuous reception DRX cycle, wake-up signal WUS enable flag, paging timing density, and power boost capability. The communication unit is further configured to send a first request message to the access network device, the first request message including a first indication message, the first indication message being used to update the first requirement parameter.

18. The apparatus as claimed in claim 17, characterized in that, If the first requirement information is a first requirement parameter, the communication unit is further configured to receive a second requirement parameter from the access network device, wherein the second requirement parameter is an updated first requirement parameter.

19. The apparatus as claimed in claim 17 or 18, characterized in that, The transmission parameters corresponding to the frequency domain resources in the first frequency domain information include one or more of the following parameters: maximum repetition count, DRX period, WUS enable flag, paging timing density, and power boost capability; the communication unit is specifically used to receive the first message from the access network device on the frequency domain resources included in the first frequency domain information using the transmission parameters corresponding to the frequency domain resources.

20. A communication device, characterized in that, The device includes a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices besides the communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the communication device. The processor is used to implement the method as described in any one of claims 1 to 6, or the method as described in any one of claims 7 to 10, through logic circuits or execution code instructions.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1 to 6, or the method as described in any one of claims 7 to 10.

22. A computer program product, characterized in that, The computer program product includes a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1 to 6, or the method as described in any one of claims 7 to 10.

Images