Paging method and communication device

Abstract

The invention discloses a paging method and a communication device, which can be applied to paging of an A-IoT terminal. The paging method comprises: a first terminal device determines a first time window, and receives a paging message in the first time window; wherein the first time window is used for paging at least one group of terminal equipment. The paging message is used for paging a first group of terminal equipment, the first group of terminal equipment belongs to the A-IoT terminal, and the paging message comprises an identifier of the first group of terminal equipment. In the application, the first time window is the time window for receiving the paging message by at least one group of terminal equipment, and each terminal equipment only needs to receive the paging message in the time window corresponding to the terminal equipment. PO in a time window does not need to be calculated according to respective IDs, complexity is reduced, and power consumption can be saved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a paging method and a communication device. Background Art

[0002] When considering connecting tags to the network as a new type of terminal device, the tags can be paged in the same way as conventional terminal devices. For example, the network device can send a paging message to page the tag. In the paging of conventional terminal devices, the network device sends a paging message at a specific paging occasion (PO), and the terminal device receives the paging message at the specific PO. The specific PO is calculated by the network device and the terminal device based on the identifier (ID) of the terminal device. If the tag calculates the PO in the same way as conventional terminal devices, the processing complexity of the tag is increased and it is more energy-consuming. For tags with weaker processing capabilities, the PO cannot even be calculated. Summary of the invention

[0003] The present application provides a paging method and a communication device, which are used to reduce the processing complexity of terminal equipment and save the power consumption of the terminal equipment.

[0004] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0005] In a first aspect, an embodiment of the present application provides a paging method, which can be performed by a first communication device. The first communication device can be a terminal device, or the first communication device is a component for implementing the functions of the terminal device. For example, the first communication device is a unit / module, circuit or chip inside the terminal device. The method provided in the first aspect is described below by taking the first communication device as the first terminal device itself as an example. Of course, the method provided in the first aspect can also be implemented by a unit / module, circuit or chip inside the first terminal device.

[0006] The paging method includes: a first terminal device determines a first time window, and receives a paging message within the first time window. The first time window is used to page at least one group of terminal devices. The paging message is used to page a first group of terminal devices, the first group of terminal devices belong to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0007] In this solution, the first time window is the time window for at least one group of terminal devices to receive paging messages, and each terminal device only needs to receive paging messages within the time window corresponding to itself. There is no need to calculate the PO within the time window according to each ID, which reduces complexity and saves power consumption, and is particularly suitable for paging of A-IoT terminals.

[0008] In one implementation, the first terminal device receiving the paging message within the first time window includes: the first terminal device continuously or periodically receiving the paging message within the first time window.

[0009] Considering that the time synchronization accuracy of A-IoT terminals is not as good as that of conventional terminal devices, the A-IoT terminals may miss paging messages from network devices. By continuously or periodically receiving paging messages within the first time window, it is possible to avoid being unable to respond to paging messages from network devices due to missing their own paging messages, thereby reducing the latency of accessing the network.

[0010] In one implementation, the method further includes: the first terminal device receives configuration information, the configuration information is used to indicate the first time window. The configuration information can be used to flexibly configure respective time windows for different terminal devices or different groups of terminal devices.

[0011] In one implementation, the configuration information includes the starting position information of the first time window within a cycle and / or the duration information of the first time window. The cycle may be a discontinuous reception cycle (DRX cycle) or an enhanced discontinuous reception cycle (eDRX cycle). The solution can configure a time window for periodically receiving paging messages for a terminal device through the configuration information.

[0012] In one implementation, the configuration information includes the number N of time windows in a cycle, where N is an integer greater than or equal to 2.

[0013] In one implementation, the first time window is the nth time window within N time windows within a cycle, where n is an integer greater than or equal to 0.

[0014] In this scheme, n can be randomly generated. For example, the first terminal device randomly selects a time window from N time windows to detect a paging message, which can stagger the time for detecting paging messages with other terminal devices and reduce the number of terminal devices detecting paging messages at the same time, thereby reducing the congestion of random access at the same time.

[0015] In one implementation, the paging message is also used to page a second group of terminal devices, which belong to A-IoT terminals, and the paging message also includes the identifiers of the second group of terminal devices. Through this solution, multiple groups of terminal devices can be paged simultaneously in the same time window, which is suitable for scenarios with massive terminal devices.

[0016] In one implementation, the paging message also includes a random access parameter, which is used to indicate the available random access resources. By indicating the available random access resources in the paging message, the first terminal device can avoid using the same random access resources as other terminal devices, thereby reducing the congestion of the random access resources and reducing the delay of the random access of the first terminal device.

[0017] In one implementation, the random access parameters include time domain resource information; wherein the time domain resource information includes a second offset and / or first time information, the second offset is used to determine the time domain starting position of the random access resource, and the first time information is used to indicate the duration of the random access resource; or, the time domain resource information includes a coverage level, and the coverage level has a mapping relationship with the time domain resource of the random access resource.

[0018] In one implementation, the random access parameter includes frequency domain resource information, the frequency domain resource information includes position information or a third offset of the frequency domain resource used for random access, and the third offset is used to determine the frequency domain resource for random access.

[0019] In one implementation, the random access parameter includes code domain resource information, and the code domain resource information includes information of a sequence used for random access.

[0020] In one implementation, the paging message also includes second time information, and the second time information indicates: ignore paging messages with the same terminal device identifier received within the time indicated by the second time information. By carrying the second time information in the paging message, it is possible to avoid the first terminal device repeatedly responding to the paging message multiple times within a period of time, thereby saving power consumption.

[0021] In one implementation, the paging message also includes a valid identifier, which indicates whether to respond to the paging message with the same terminal device identifier as the received one. By carrying a valid identifier in the paging message, the first terminal device can clearly know whether to respond to its own paging message, which can avoid repeatedly responding to the paging message within a period of time, and can also avoid waiting for being paged again due to missing the paging message this time, thereby reducing the delay of accessing the network device.

[0022] In a second aspect, an embodiment of the present application provides a paging method that can be performed by a second communication device. The second communication device can be a network device, or the second communication device is a component for implementing the function of the network device. For example, the second communication device is a unit / module, circuit or chip inside the network device. The method provided by the second aspect is described below by taking the second communication device as the network device itself as an example. Of course, the method provided by the second aspect as follows can also be implemented by a unit / module, circuit or chip inside the network device.

[0023] The paging method includes: a network device determines a first time window, and sends a paging message within the first time window. The first time window is used to page at least one group of terminal devices. The paging message is used to page a first group of terminal devices, the first group of terminal devices belong to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0024] In one implementation, the method further includes: sending configuration information, where the configuration information is used to indicate the first time window.

[0025] In one implementation, the configuration information includes starting position information of a first time window within a period and / or duration information of the first time window.

[0026] In one implementation, the configuration information includes the number N of time windows in a cycle, where N is an integer greater than or equal to 2.

[0027] In one implementation, the paging message is also used to page a second group of terminal devices, where the second group of terminal devices belong to A-IoT terminals, and the paging message also includes identifiers of the second group of terminal devices.

[0028] In an implementation manner, the paging message further includes a random access parameter, where the random access parameter is used to indicate available random access resources.

[0029] In one implementation, the random access parameters include time domain resource information; wherein the time domain resource information includes a second offset and / or first time information, the second offset is used to determine the time domain starting position of the random access resource, and the first time information is used to indicate the duration of the random access resource; or, the time domain resource information includes a coverage level, and the coverage level has a mapping relationship with the time domain resource of the random access resource.

[0030] In one implementation, the random access parameter includes frequency domain resource information, the frequency domain resource information includes position information or a third offset of the frequency domain resource used for random access, and the third offset is used to determine the frequency domain resource for random access.

[0031] In one implementation, the random access parameter includes code domain resource information, and the code domain resource information includes information of a sequence used for random access.

[0032] In one implementation, the paging message further includes second time information, where the second time information indicates: ignore paging messages with the same terminal device identifier received within the time indicated by the second time information.

[0033] In one implementation, the paging message further includes a valid identifier, where the valid identifier indicates whether to respond to the paging message with the same terminal device identifier as received.

[0034] The effective effects of the second aspect can be referred to the beneficial effects of the first aspect mentioned above, which will not be repeated here.

[0035] In a third aspect, an embodiment of the present application provides a paging method, which can be performed by a first communication device. The first communication device can be a terminal device, or the first communication device is a component for implementing the functions of the terminal device. For example, the first communication device is a unit / module, circuit or chip inside the terminal device. The method provided in the third aspect is described below by taking the first communication device as the first terminal device itself as an example. Of course, the method provided in the third aspect can also be implemented by a unit / module, circuit or chip inside the first terminal device.

[0036] The paging method includes: a first terminal device determines a first PO, and receives a paging message in the first PO. The first PO is used to page at least one group of terminal devices. The paging message is used to page a first group of terminal devices, the first group of terminal devices belongs to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0037] In a fourth aspect, an embodiment of the present application provides a paging method that can be performed by a second communication device. The second communication device can be a network device, or the second communication device is a component for implementing the function of the network device. For example, the second communication device is a unit / module, circuit or chip inside the network device. The method provided in the fourth aspect is described below by taking the second communication device as the network device itself as an example. Of course, the method provided in the fourth aspect can also be implemented by a unit / module, circuit or chip inside the network device.

[0038] The paging method includes: a network device determines a first PO, and sends a paging message in the first PO. The first PO is used to page at least one group of terminal devices. The paging message is used to page a first group of terminal devices, the first group of terminal devices belong to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0039] In a fifth aspect, an embodiment of the present application provides a communication device, which has the function of implementing the behaviors in the method examples of the first to fourth aspects above. The beneficial effects can be found in the relevant descriptions of the first to fourth aspects and will not be repeated here. For example, the communication device may be the first terminal device in the first aspect or the third aspect, or the communication device may be the network device in the second aspect or the fourth aspect. For another example, the communication device may be a device that can support the terminal device to implement the functions required by the method provided in the first aspect or the third aspect, for example, the communication device may be a chip or a chip system in the terminal device. Or, for another example, the communication device may be a device that can support the network device to implement the functions required by the method provided in the second aspect or the fourth aspect, for example, the communication device may be a chip or a chip system in the network device.

[0040] In one possible design, the communication device includes a baseband device and a radio frequency device.

[0041] In one possible design, the communication device includes corresponding means or modules for executing the method of any aspect of the first aspect to the fourth aspect. For example, the communication device includes a processing unit (sometimes also referred to as a processing module or processor) and / or a transceiver unit (sometimes also referred to as a transceiver module or transceiver). The transceiver unit can implement the sending function and the receiving function. When the transceiver unit implements the sending function, it can be called a sending unit (sometimes also referred to as a sending module). When the transceiver unit implements the receiving function, it can be called a receiving unit (sometimes also referred to as a receiving module). The sending unit and the receiving unit can be the same functional unit, which is called a transceiver unit, and the functional unit can implement the sending function and the receiving function; or, the sending unit and the receiving unit can be different functional units, and the transceiver unit is a general term for these functional units. These units (modules) can perform the corresponding functions in the method examples of any aspect of the first aspect to the fourth aspect above. Please refer to the detailed description in the method examples for details, which will not be repeated here.

[0042] In a sixth aspect, an embodiment of the present application provides a communication device, which may be the communication device in the fifth aspect of the above-mentioned embodiment, or a chip or chip system arranged in the communication device in the fifth aspect. The communication device includes a communication interface and a processor, and optionally, also includes a memory. Among them, the memory is used to store computer programs or instructions or data, and the processor is coupled to the memory and the communication interface. When the processor reads the computer program or instructions or data, the communication device executes the method executed by the first terminal device in the above-mentioned method embodiment. For example, the communication device may be a terminal device or a functional module in the terminal device, such as a baseband chip and a radio frequency chip. Alternatively, when the processor reads the computer program or instructions or data, the communication device executes the method executed by the network device in the above-mentioned method embodiment. For example, the communication device may be a network device or a functional module in the network device, such as a baseband chip and a radio frequency chip.

[0043] In the seventh aspect, an embodiment of the present application provides a chip system, which includes a processor and may also include a communication interface for implementing the method described in any of the first to fourth aspects. Optionally, the chip system also includes a memory. The memory is used to store computer programs (also referred to as codes, or instructions). The processor is used to call and run a computer program from the memory so that a device equipped with the chip system executes the method in the first aspect and any possible implementation thereof, or a device equipped with the chip system executes the method in the second aspect and any possible implementation thereof, or a device equipped with the chip system executes the method in the third aspect and any possible implementation thereof, or a device equipped with the chip system executes the method in the fourth aspect and any possible implementation thereof. The chip system may be composed of chips, or may include chips and other discrete devices.

[0044] In an eighth aspect, an embodiment of the present application provides a communication device, which includes an input / output interface and a logic circuit. The input / output interface is used to input and / or output information. The input / output interface can be an interface circuit, an output circuit, an input circuit, a pin or a related circuit, etc. The logic circuit is used to execute the method described in any aspect of the first aspect to the fourth aspect.

[0045] In the specific implementation process, the above-mentioned communication device can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the logic circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. This application does not limit the specific implementation of the input and output interface and the logic circuit.

[0046] In one implementation, when the communication device is a wireless communication device, the wireless communication device may be a terminal device such as a mobile phone. The interface circuit may be a radio frequency processing chip in the wireless communication device, and the processing circuit may be a baseband processing chip in the wireless communication device.

[0047] In a ninth aspect, an embodiment of the present application provides a communication system, the communication system comprising a terminal device and a network device. The terminal device is used to implement the functions of the method described in the first aspect, and the network device is used to implement the functions of the method described in the second aspect; or the terminal device is used to implement the functions of the method described in the third aspect, and the network device is used to implement the functions of the method described in the fourth aspect.

[0048] In the tenth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store computer programs or instructions. When the computer-readable storage medium is executed, the method described in the first aspect and any possible implementation thereof is implemented, or the method described in the second aspect and any possible implementation thereof is implemented, or the method described in the third aspect and any possible implementation thereof is implemented, or the method described in the fourth aspect and any possible implementation thereof is implemented.

[0049] In the eleventh aspect, the embodiments of the present application also provide a computer program product comprising instructions, which, when executed on a computer, enables the method described in the first aspect and any possible implementation thereof to be implemented, or enables the method described in the second aspect and any possible implementation thereof to be implemented, or enables the method described in the third aspect and any possible implementation thereof to be implemented, or enables the method described in the fourth aspect and any possible implementation thereof to be implemented.

[0050] The beneficial effects of the fifth to eleventh aspects and their implementations can refer to the description of the beneficial effects of the first to fourth aspects and any possible implementations thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A schematic diagram of a communication system applicable to an embodiment of the present application;

[0052] Figure 2 for Figure 1 Schematic diagram of a communication system with separate reader and writer;

[0053] Figure 3 A schematic diagram of PF and PO in a discontinuous reception cycle provided by an embodiment of the present application;

[0054] Figure 4 A schematic diagram of a paging method 400 provided in an embodiment of the present application;

[0055] Figure 5 A schematic diagram of N time windows in a discontinuous reception cycle provided in an embodiment of the present application;

[0056] Figure 6 A schematic diagram of N time windows within Tn provided in an embodiment of the present application;

[0057] Figure 7 A schematic diagram of a paging message carrying multiple group identifiers within a time window provided in an embodiment of the present application;

[0058] Figure 8A schematic diagram of a paging message of multiple POs within a time window carrying multiple group identifiers provided in an embodiment of the present application;

[0059] Fig. 9 A schematic diagram of multiple POs within a time window provided in an embodiment of the present application;

[0060] Fig.10 A schematic diagram of random access resources of terminal devices within multiple time windows provided in an embodiment of the present application;

[0061] Fig.11 Another schematic diagram of random access resources of terminal devices within multiple time windows provided in an embodiment of the present application;

[0062] Fig.12 A schematic diagram of a paging method 1200 provided in an embodiment of the present application;

[0063] Fig.13 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0064] Fig.14 Another structural schematic diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] The embodiment of the present application provides a paging method that can be used to paging an Internet of Things (IoT) terminal, where IoT includes ambient IoT (A-IoT), narrowband internet of things (NB-IoT), etc. IoT technology is widely used in various industries. For example, IoT technology can be applied to logistics, warehousing, industrial manufacturing, identity recognition, or environmental monitoring. IoT is based on radio frequency identification (RFID) technology. RFID technology is a contactless communication technology that uses radio frequency communication. The principle is that there is no need for contact between the reader / reader and the tag, and data communication is achieved through radio waves.

[0066] The technical solution provided in the embodiments of the present application can be applied to IoT systems, such as A-IoT systems; it can also be applied to communication systems related to the 3rd Generation Partnership Project (3GPP), such as the long term evolution (LTE) communication system, the sixth generation (5G) mobile communication system, or it can also be applied to other next generation mobile communication systems, such as the sixth generation (6G) communication system, or other similar communication systems. Other similar communication systems may include wireless fidelity (Wi-Fi), vehicle to everything (V2X), and the like.

[0067] See also Figure 1 , is a schematic diagram of a communication system provided in an embodiment of the present application. The communication system includes at least one terminal device and at least one network device. Figure 1 For example, at least one terminal device is a terminal device and at least one network device is a network device. Figure 1 The network architecture shown is only for illustration, and the number of terminal devices and / or network devices may be less or more. The communication system described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the communication system to which the embodiment of the present application is applicable. It is known to those of ordinary skill in the art that with the evolution of the network architecture, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems. When the technical solution of the embodiment of the present application is applied to other communication systems, the devices, components, modules, etc. in the embodiment may be replaced with corresponding devices, components, modules in other communication systems without limitation.

[0068] Among them, anything that can communicate data with network equipment can be regarded as a terminal device. Terminal equipment is also called terminal, terminal device, user equipment (UE), mobile station, or mobile terminal. For example, the terminal device can be: a mobile phone, a computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a robotic arm, a camera, a robot, or a smart home device (such as a TV, air conditioner, sweeper, speaker, set-top box), a relay, a customer premise equipment (CPE), and a device with the function of a tag device. For example, the terminal device can be a tag in IoT / A-IoT, etc. Figure 1 Take the case where the terminal device is an A-IoT terminal.

[0069] Tags can be called RFID tags or electronic tags, or A-IoT terminals or A-IoT devices. They are usually attached to objects to identify target objects. Tags can receive radio frequency signals from readers and writers. With the energy obtained from the induced current, tags can send out information stored in the chip inside the tag. Alternatively, tags can actively send signals of a certain frequency to the reader and writer, and the reader and writer read the information from the tag. The design of tags is relatively simple. It integrates application layer signaling and air interface signaling together, and has the characteristics of low power consumption. Tags are divided into three types: active, passive, and semi-active / semi-passive. Active tags are also called active tags, passive tags are also called passive tags, and semi-active / semi-passive tags are also called semi-passive tags. Active tags / active tags are equipped with a power supply and adopt a communication method of actively generating carrier waves, that is, they can actively send signals to the reader and writer without obtaining energy for sending signals based on the received signals. Passive tags / passive tags are not equipped with power modules or the power module has low power. They can use a communication method based on backscatter, which can obtain energy from the environment and send signals through the energy. Passive tags can work in reflection communication scenarios. For example, passive tags reflect signals from readers to obtain energy to transmit data. Semi-active / semi-passive tags integrate the advantages of active tags and passive tags and can be used as a special marker. Usually, semi-active / semi-passive tags are in a dormant state and may not work or send signals to the outside world. Only when they enter the activation signal range of a low-frequency activator, the semi-active / semi-passive tag is activated and starts working. The tags involved in the embodiments of the present application may be active tags, passive tags, or semi-active / semi-passive tags.

[0070] In the embodiments of the present application, the tag can be used as a terminal device. Accordingly, the terminal devices in the present application can be of the following three types: passive terminal: no energy storage, can not generate signals independently, use backscattering to transmit signals; semi-passive terminal: has energy storage, but can not generate signals independently, uses backscattering to transmit signals, and its stored energy can amplify the reflected signal; active terminal: has energy storage, can generate signals independently, and has active radio frequency components for transmission.

[0071] Both the tag device and the reader-writer can be implemented based on the infrastructure in the cellular network, or the tag device and the reader-writer can be devices in the cellular network. For example, the function of the reader-writer can be implemented by the network device or the terminal device, and the tag device can be implemented by the terminal device in the cellular network. For example, the tag device can be an IoT terminal with extremely low power consumption and extremely low complexity. When the terminal device has the function of the tag device, non-contact data communication can be performed between the terminal device and the network device or another terminal device.

[0072] The various terminal devices introduced above, if located on the vehicle (for example, placed / installed in the vehicle), can be considered as vehicle-mounted terminal devices. The vehicle-mounted terminal device can be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into the vehicle as one or more components or units. The vehicle-mounted terminal device can also be a complete vehicle device, a vehicle-mounted module, a vehicle, an on-board unit (OBU), a roadside unit (RSU), a vehicle-mounted system (or a vehicle-mounted sending unit) (telematics box, T-box), a chip or a system on chip (SOC), etc. The above chip or SOC can be installed in a vehicle, OBU, RSU or T-box.

[0073] In the embodiments of the present application, the device for realizing the function of the terminal device may be the terminal device itself, or may be a device that can support the terminal device to realize the function, such as a chip system or a combination device or component that can realize the function of the terminal device, and the device may be installed in the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device. For example, in the embodiments of the present application, the terminal device may be in the form of a tag or other terminal form.

[0074] The network devices involved in the embodiments of the present application are mainly access network devices. Therefore, in the following text, unless otherwise specified, the "network devices" referred to refer to radio access network (RAN) devices, which can be referred to as access network devices for short. RAN may be a cellular system related to 3GPP, for example, an LTE system, a new radio (NR system), or a future-oriented evolution system (for example, a 6G mobile communication system). RAN may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a virtualized RAN (virtualized RAN, vRAN), etc. RAN may also be a communication system in which two or more of the above systems are integrated. RAN equipment may also be referred to as a RAN node, a RAN entity, or an access node, etc. For example, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, etc. A RAN node may be a RAN node in a V2X technology, an RSU, an access node in a Wi-Fi system, etc.

[0075] The RAN node may also be a module or unit that completes part of the functions of the base station; or multiple RAN nodes collaborate to assist the terminal device in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node may be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). In different systems, CU, DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. CU and DU can be configured according to the protocol layer functions of the wireless network they implement, and which protocol layers are configured for CU and DU respectively are not limited in the embodiments of this application. Any unit in CU, DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0076] In the embodiment of the present application, the network device may have a built-in reader / writer. When the terminal device is a tag, the tag and the network device may communicate via the Uu port. Figure 1 As shown in the figure. The functions of the reader can be further separated, and the reader can be divided into a receiver and an exciter. The receiver is also called a receiving end or a receiving unit, and the exciter is also called an exciter end or an exciter unit. The exciter unit is equivalent to the transmitter in the reader, and the receiving unit is equivalent to the receiver in the reader. When the reader is implemented in a separated architecture, different entities of the reader can be deployed on different network devices, such as Figure 2 shown. Figure 2 In the embodiment, an activator is deployed on the first network device to execute the sending function of the reader / writer; a receiver is deployed on the second network device to execute the receiving function of the reader / writer.

[0077] In the embodiments of the present application, the device for realizing the function of the network device can be the network device itself, or a device that can support the network device to realize the function, such as a chip system or a combination device or component that can realize the function of the network device, and the device can be installed in the network device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0078] With the development of IoT technology, tags are widely used in various industries. For example, tags can be used for transportation management of warehouse materials, logistics management, industrial control, identity recognition, environmental testing, etc. As a typical application, logistics management is achieved by taking inventory of physical tags. Taking inventory of tags means that the reader performs an inventory operation on some tags within the coverage range to obtain the identification of the tags within the coverage range of the reader. Usually, the reader broadcasts a select message, which includes the range of tags to be counted. Any tag receives the select message and determines whether its own identification belongs to the select message or the included tag identification range. If it does, the tag connects to the reader. For the tag, it does not know when the reader broadcasts the select message. In order to avoid missing the select message, the tag's receiver is usually always turned on, which is more energy-consuming.

[0079] As a type of UE, the paging method of the tag can also follow the paging method of the conventional UE. It can be understood that when the UE is in the radio resource control (RRC) idle state or the RRC inactive state, if the core network or base station needs to send downlink data to the UE, it will first send a paging message to the UE for paging the UE. After receiving the paging message, the UE will initiate the RRC connection establishment process to receive downlink data. The RRC idle state network device can send a paging message (also referred to as paging) on ​​a specific PO in a specific paging frame (PF) within the paging cycle. Accordingly, the UE receives / monitors the paging message within a specific PO.

[0080] In one implementation, if the paging message includes the (identifier, ID) of a certain UE, the UE is paged, and then the UE can respond to the paging message and initiate random access. The process in which the UE can respond to the paging message: if the UE ID included in the paging record matches the UE ID allocated by the upper layer (if the ue-Identity included in the PagingRecord matches the UE identity allocated by upper layers), the UE identity, accessType (if present) and paging cause (if determined) can be forwarded to the upper layer (forward the ue-Identity, accessType (if present) and paging cause (if determined) to the upper layer); otherwise, the UE ID and accessType (if present) are forwarded to the upper layer (forward the ue-Identity and accessType (if present) to the upper layer). Alternatively, if the UE ID included in the paging record matches the UE ID assigned by the upper layer, and the upper layer indicates the support of paging cause (if upper layers indicate the support of paging cause), the UE identity, accessType (if present) and paging cause (if determined) may be forwarded to the upper layer. If the UE does not respond to the paging message, it may discard the paging message and not initiate random access.

[0081] In order to reduce power consumption, the discontinuous reception (DRX) mechanism is introduced in LTE technology. The DRX mechanism includes a DRX cycle. The UE will periodically "wake up" for a period of time in the DRX cycle, and can remain in a "sleep" state at other times in the DRX cycle to reduce power consumption. For UEs configured with DRX, they will "wake up" to receive paging messages on the paging occasions (PO) included in the DRX cycle. In order to further reduce power consumption, the enhanced discontinuous reception (extended DRX, eDRX) mechanism is introduced on the DRX mechanism in NR technology. Compared with DRX, eDRX has a longer DRX cycle, that is, the UE can periodically "sleep" for a longer period of time and then "wake up" again. An eDRX cycle includes a paging transmission window (PTW), and the PTW includes one or more PFs. A PF includes multiple POs, such as Figure 3 shown. Figure 3 The T in the figure represents an eDRX cycle. Figure 3 Take an eDRX cycle including N PFs as an example, where N is a positive integer; and Figure 3 Take a PF including Ns POs as an example, where Ns is a positive integer. It should be noted that the DRX cycle and the eDRX cycle in the embodiment of the present application are replaceable.

[0082] The UE or network device can calculate the location of the PO based on the UE ID. The system frame number (SFN) of the PF where the PO of the UE receives the paging message satisfies: (SFN+PF offset )mod T=(T div N)×(UE_ID modN); T is the length of the eDRX cycle, "div" means division, and "T div N" is equivalent to dividing the eDRX cycle into N equal parts. mod means modulo operation. UE_ID is the ID of the UE, and UE_ID can be 5G-S-temporary mobile subscription identifier (5G S-temporarymobile subscription identifier, 5G-S-TMSI) mod(1024). UE_ID mod N means taking the UE_ID mod Nth part out of N parts. PF offset Indicates the PF offset.

[0083] The index i_s of the PO satisfies: i_s=floor(UE_ID / N)mod Ns, where Ns is the number of POs included in a PF.

[0084] The paging message sent by the network device carries the ID of one or more UEs to be paged. However, the number of UE IDs that can be carried by the paging message is currently limited. For example, in NR technology, the number of UE IDs that can be carried by the paging message does not exceed 32. In order to page more UEs at the same time, a group paging mechanism is proposed. The group paging mechanism is mainly for multimedia broadcast multicast service (MBMS) / multicast broadcast service (MBS). MBS services, for example, include live broadcast services, public safety services, batch software update services, etc. In the group paging mechanism, the paging message carries a group of UE IDs. For example, the UE group ID may be a temporary mobile group identity (TMGI).

[0085] In conventional UE paging, the network device calculates the PO for receiving paging messages based on the UE ID, and sends the paging message at the calculated PO. The terminal device calculates the PO for receiving paging messages based on the UE ID, and receives the paging message at the calculated PO. For the tag, it does not know when the network device sends the paging message. In order to prevent missing the paging message, the tag's receiver is always turned on, which is more energy-consuming. If the tag calculates the PO in the same way as the UE calculates the PO, the processing complexity of the tag is increased, which is also more energy-consuming. However, tags are usually used because of their low power consumption characteristics. Therefore, conventional UE paging is not suitable for tag paging. In addition, the crystal oscillator accuracy of the tag is not as good as that of the UE, or in other words, the time synchronization accuracy of the tag is not as good as that of the UE. Then there is a time deviation between the PO calculated by the tag based on the tag ID and the PO calculated by the network device based on the tag ID, which causes the tag to miss the paging message from the network device and will not access the network later, affecting the normal business of the tag.

[0086] In view of this, a paging method of an embodiment of the present application is provided. In an embodiment of the present application, multiple terminal devices receive paging messages within the same time window, and the time window is used to paging multiple terminal devices. There is no need for each terminal device to calculate the PO within the time window based on its own ID, which reduces the complexity. The paging method provided in an embodiment of the present application is particularly suitable for paging of A-IoT terminal devices (such as tags), and of course it is also suitable for paging of other types of terminal devices.

[0087] The paging method provided by the embodiment of the present application is described below in conjunction with the accompanying drawings. In each embodiment of the present application, the time window may also be referred to as a paging time window or a paging transmission window, or may be referred to by other names. The discontinuous reception cycle may be a DRX cycle in LTE or NR, or an eDRX cycle in NR. Receiving a paging message may be referred to as detecting a paging message or listening to a paging message.

[0088] In the embodiment of the present application, the paging message may be a paging message or a Select signaling. It is understandable that the Select signaling is used for paging tags. Accordingly, if the terminal device A is paged, when the paging message is a paging message, the identifier of the terminal device A included in the paging message may be the ID of the terminal device A. When the paging message is a Select signaling, the paging message may include mask information, and the mask information is used to filter the terminal device A. For example, the mask carried by the Select signaling is 4 bits "0000", and the mask of the terminal device A is "00001111". Since the first 4 bits of "00001111" are the mask carried by the Select signaling, the terminal device A meets the selection range of the Select signaling, and the terminal device A can respond to the Select signaling. Of course, the Select signaling may also carry the identifier / group identifier of the terminal device; or, the Select signaling includes a filter, and the filter is used to filter the terminal devices to be paged. The filter can be the identifier / group identifier of the terminal device, which is used to page a certain terminal device or a certain group of terminal devices; or the filter can also indicate the type of the terminal device, that is, it is used to page a class of terminal devices. It can be understood that the filter is used to filter the terminal devices, and the filter can also be called filtering information. The specific name of the filter is not limited in the embodiment of the present application.

[0089] In an embodiment of the present application, detecting a paging message within a time window includes detecting a paging early indication (PEI) within a time window. The network device configures a time window for the terminal device, which is equivalent to configuring a listening opportunity for PEI for the terminal device. PEI can carry a (sub) group identifier (subgrouping). If the terminal device detects PEI and the terminal device belongs to the subgroup indicated by PEI, the terminal device detects the paging message in its associated PO; if the terminal device does not detect PEI, or the terminal device belongs to the group indicated by PEI, the terminal device does not need to detect the paging message in its associated PO. Among them, PEI can also carry a filter for filtering terminal devices.

[0090] In an embodiment of the present application, one or more of the duration, time offset and period may be (pre) configured or predefined. And the embodiment of the present application does not limit the specific unit size of the duration, time offset and period. For example, the unit of the duration or time offset or period may be a time slot, a physical downlink control channel (PDCCH) period, a preamble, a SFN, a hyper frame number (HSFN, hyper system frame number). For example, a duration or a time offset or a period may be at least one time slot, at least one PDCCH period, at least one preamble, and at least one system frame. For another example, the unit of the duration or time offset may be a time unit. For example, a duration or a time offset may be 10ms, 20ms or 30ms, etc.

[0091] The following describes the paging method provided in the embodiment of the present application by taking the paging method performed by the network device and the first terminal device as an example. The steps performed by the network device can be implemented by the RAN device itself, or by a component in the RAN device (such as a baseband chip, or other processing units or processors). For example, the network device can be Figure 1 or Figure 2 The network device in the Figure 1 or Figure 2 The steps performed by the first terminal device may be implemented by the terminal device itself, or by a component (such as a chip, a processing unit, or a processor module) in the first terminal device. The first terminal device may be Figure 1 or Figure 2 The terminal device shown, or it can be Figure 1 or Figure 2 The chip (system) in the terminal device in the first terminal device may be a UE or an A-IoT terminal device, for example, the first terminal device may be a tag.

[0092] See also Figure 4 , Figure 4 A schematic diagram of the process of a paging method 400 provided in an embodiment of the present application is shown. Figure 4 The method is described from the perspective of the interaction between the network device and the first terminal device. It should be understood that the paging method 400 can also be implemented by other devices, such as a chip or a communication device with communication functions. The first time window in the following text refers to a time window. The first time window is taken as an example below. If multiple time windows are involved, each time window is similar to the first time window. Figure 4As shown, the process of the paging method 400 includes the following steps.

[0093] S401. A first terminal device determines a first time window, where the first time window is used to page at least one group of terminal devices.

[0094] The first time window can be used to page at least one group of terminal devices, or the first time window is a time window in which at least one group of terminal devices receives a paging message. For example, the first time window can be used to page terminal device group A and terminal device group B. It can be considered that terminal devices of different groups can receive paging messages in the same time window, or one time window includes the respective POs of multiple groups of terminal devices. A group of terminal devices can be one terminal device or multiple terminal devices. If a group of terminal devices includes multiple terminal devices, different terminal devices can receive paging messages in the same time window. Taking the first time window as an example, the first time window is a time window in which multiple terminal devices receive a paging message, and the first time window includes the respective POs of multiple terminal devices. For example, the first time window can be used to paging terminal device A and terminal device B, and the first time window includes the PO of terminal device A and the PO of terminal device B.

[0095] In the embodiment of the present application, there is a corresponding relationship between the terminal device group and the time window. For example, there are multiple time windows (including time window 1 and time window 2), and there are multiple terminal device groups (including terminal device group A, terminal device group B and terminal device group C). For another example, terminal device group A corresponds to time window 1, and time window 1 is used to paging terminal device group A; terminal device group B corresponds to time window 2, and time window 2 is used to paging terminal device group B. For another example, terminal device group A corresponds to time window 1, and time window 1 is used to paging terminal device group A; terminal device group B and terminal device group C correspond to time window 2, and time window 2 is used to paging terminal device group B and terminal device group C. Any terminal device can determine the time window corresponding to itself according to the group it belongs to, so as to receive the paging message within the determined time window. For example, terminal device group A corresponds to the first time window, the first terminal device is a terminal device in terminal device group A, and the first terminal device can receive the paging message within the first time window (this embodiment of the present application takes this as an example). Since the terminal device receives the paging message within the time window corresponding to itself, there is no need to calculate the PO of the paging message received within the time window based on the ID of the terminal device. Therefore, the processing complexity can be reduced and the energy consumption of the terminal device can be saved. It is especially suitable for A-IoT terminals (such as tags).

[0096] The first time window may be configured by the network device to the first terminal device, or the first time window may be configured by the network device to the terminal device group (eg, called the first group of terminal devices) to which the first terminal device belongs. For example, before S401, the network device may further execute S400.

[0097] S400: The network device sends configuration information to the first terminal device, where the configuration information is used to indicate a first time window. Accordingly, the first terminal device receives the configuration information and can determine the first time window.

[0098] The configuration information is used to indicate the first time window, which can be referred to as the configuration information is used to configure the first time window. The configuration information can directly indicate the first time window, or can indirectly indicate the first time window, including but not limited to the following two methods.

[0099] Mode A: The configuration information configures the starting position of the first time window and / or the duration of the first time window within a period of time. For example, the configuration information configures the starting position of the first time window and / or the duration of the first time window within a cycle.

[0100] As an example, the configuration information may include the starting position information of the first time window within a cycle, which is used to indicate the starting position of the first time window within a cycle. The cycle may be a discontinuous reception cycle, such as a DRX cycle or an eDRX cycle; or, the cycle may also be a cycle configured by the network device. The starting position information of the first time window may be the absolute starting position of the first time window. For example, the starting position information of the first time window is an offset (offset) of the time information relative to the reference starting position (such as T0). The offset may be n, where n is information related to time. For example, n is the offset value of the system frame number. Assuming n=10, the system frame number corresponding to T0 is 1, then the starting position of the first time window is SFN=T0+n=11. For another example, n is the absolute time. Assuming n=10ms, the starting position of the first time window is the time position offset by 10ms after T0. For another example, the starting position information of the first time window may also be information used to indicate the starting position of the first time window. For example, the starting position information of the first time window is the proportion m of the first time window in a period of time T. Assuming m=1 / 3, the starting position of the first time window is at the position of (1 / 3)×T.

[0101] In this case, the duration of the first time window may be preconfigured or predefined, for example, the duration of the first time window is at least one frame or at least one time slot; for another example, the duration of the first time window may be an absolute duration, for example, the duration of the first time window is several seconds or several milliseconds, etc. The first terminal device receives the configuration information, determines the starting position of the first time window according to the starting position information of the first time window, and then determines the position of the first time window according to the duration of the first time window.

[0102] As another example, the configuration information may include duration information of the first time window within a cycle. For example, the duration of the time window is in units of time slots, and the configuration information may include M, then the length of the first time window is M time slots, and M is a positive integer. In this case, the starting position of the first time window can be preconfigured or predefined. For example, the starting position of the first time window is the starting position of a discontinuous reception cycle (DRX cycle or eDRX cycle). For another example, the starting position of the first time window is the first offset interval between the starting positions of the discontinuous reception cycle (DRX cycle or eDRX cycle). The first terminal device receives the configuration information, determines the starting position of the first time window, and then determines the first time window based on the starting position of the first time window.

[0103] The first offset may be (pre) configured. The first offset and the duration information of the first time window may be carried in one signaling, for example, the network device sends configuration information, the configuration information includes the duration information of the first time window and the first offset. Alternatively, the first offset and the duration information of the first time window are independently configured. For example, the network device sends configuration information, the configuration information includes the duration information of the first time window, and the network device also sends information of the first offset.

[0104] As another example, the configuration information may include the starting position information of the first time window within a period and the duration information of the first time window, which is more flexible.

[0105] Optionally, in mode A, the configuration information may further include information about the length of a cycle. For example, the configuration information includes T, where T is the length of a cycle.

[0106] Mode B: The configuration information configures the number N of time windows in a cycle, and the first time window is a time window in the time window in a cycle. N is an integer greater than or equal to 2. A cycle can be a DRX cycle, an eDRX cycle, or a cycle configured by a network device.

[0107] The configuration information may include the number N of time windows in a cycle. The first time window is one of the N time windows. The first terminal device receives the configuration information and may determine the first time window according to the configuration information. For example, the first time window may be the nth time window of the N time windows, where n is an integer greater than or equal to 0 and less than N.

[0108] In one implementation, the first terminal device may generate a random number n, and determine the nth time window among N time windows as the first time window according to the random number n, where n is less than or equal to N. The first terminal device randomly selects a time window from the N time windows as the first time window, and can stagger the time for detecting paging messages with other terminal devices, thereby reducing the number of terminal devices detecting paging messages at the same time, thereby reducing random access congestion at the same time.

[0109] In another implementation, n is related to the identification information of the first terminal device. For example, the identification information of the first terminal device is UE ID, n=UE ID mod N; for another example, the identification information of the first terminal device is filter, n=filtermod N.

[0110] In another implementation, n is related to the identification information of the terminal device group to which the first terminal device belongs. For example, n=group identification mod N.

[0111] Alternatively, the configuration information may include the number N and n of time windows in a cycle. The first terminal device receives the configuration information and determines that the first time window is the nth time window among the N time windows in a cycle. If the number N of time windows in a cycle is preconfigured or predefined. The first terminal device may determine that the first time window is the nth time window among the N time windows in a cycle according to the above two implementations of n. In this case, the network device does not need to send the configuration information. Therefore, S400 is not a necessary step. Figure 4 Indicated by dotted line.

[0112] For example, see Figure 5 , showing N time windows within a discontinuous reception cycle. Figure 5 "T" indicates the length of a discontinuous reception period. If n = n3, then the first time window is the time window indicated by the shaded portion. When the configuration information includes N, the first terminal device can determine the length of a time window x = T / N. If x is not an integer, then round down to (T / N). The first terminal device can determine the starting position of the first time window based on x and the starting position of the discontinuous reception period, and then determine the first time window.

[0113] Optionally, in mode B, the configuration information may further include information about the length of a cycle. For example, the configuration information includes T, where T is the length of a cycle.

[0114] Method B takes the configuration information as an example to configure the number of time windows N in a cycle. In one implementation, the network device can configure the number of time windows N in a period of time, and the first time window is one of the N time windows in the period of time. The length Tn of the period of time is less than the length T of a cycle. For example, see Figure 6 , showing N time windows within Tn. Figure 6 The "T" in the figure indicates the length of a cycle. The starting position of Tn can be the same as the starting position of a cycle ( Figure 6 Take this as an example). The starting position of Tn and the starting position of a cycle may also be separated by a second offset, and the second offset may be (pre)configured. In this case, the configuration information may include Tn and N. The first terminal device receives the configuration information, and the starting position of Tn is the same as the starting position of a cycle by default. Alternatively, the configuration information may include Tn and N and the second offset.

[0115] The embodiments of the present application do not limit what kind of signaling the configuration information is carried in. For example, the configuration information may be carried in one or more of radio resource control (RRC) signaling, downlink control information (DCI) or MAC control element (CE), or the configuration information may be carried in one or more fields in RRC, DCI or MAC CE. The configuration information may also be carried in one or more signalings. For example, the configuration information includes the starting position information of the first time window and the duration information of the first time window, and the network device sending the configuration information may be the network device sending the first signaling and the second signaling, the first signaling including the starting position information of the first time window, and the second signaling including the duration information of the first time window.

[0116] The network device can broadcast the configuration information. For example, the configuration information can be carried in system information (SI), system information block (SIB), master information block (MIB), etc. Any terminal device receives the configuration information and can determine its own time window based on the configuration information and its own identification. For example, the identification of the first terminal device is UE ID, then the SFN corresponding to the first time window satisfies: (SFN+PF_offset)mod T=(T div N)×(UE_ID mod N); for another example, the identification of the first terminal device is filter, then the SFN corresponding to the first time window satisfies: (SFN+PF_offset)mod T=(T divN)×(filter mod N). Wherein, T is a non-continuous reception period, N is the number of time windows within T, and PF_offset is used to determine the offset of the first time window (for example, the first offset).

[0117] When the network device needs to page a group of terminal devices, it will also determine the time window corresponding to the group of terminal devices. For example, the network device needs to page the first group of terminal devices, and the time window corresponding to the first group of terminal devices is the first time window, and the network device will also determine the first time window. The method for the network device to determine the first time window is similar to the method for the first terminal device to determine the first time window, and will not be repeated here.

[0118] S402: The network device sends a paging message within a first time window, where the paging message is used to page a first group of terminal devices.

[0119] Correspondingly, the first terminal device receives a paging message in the first time window. The first time window is used to paging the first group of terminal devices. When the network device needs to page the first group of terminal devices, it can send a paging message in the first time window, and the paging message is used to paging the first group of terminal devices. For example, the paging message includes the identifier of the first group of terminal devices. Correspondingly, the first terminal device belongs to the first group of terminal devices, and the first terminal device can receive a paging message in the first time window. The paging message in the first time window includes the identifier of the first group of terminal devices. It can be understood that the paging message of each PO in the first time window includes the identifier of the first group of terminal devices, that is, the paging message of each PO in the first time window carries the same group identifier.

[0120] In an embodiment of the present application, a group of terminal devices may also be a class of terminal devices. For example, the first time window is used to paging at least one group of terminal devices, and it may also be replaced by the first time window being used to paging at least one class of terminal devices. The identifier of the terminal device / terminal device group carried by the paging message may also be understood as being used to filter the terminal devices. From this perspective, the paging message including the identifier of the first group of terminal devices may be replaced by the paging message including the first filtering information / filter, and the first filtering information / filter is used to filter the first group of terminal devices.

[0121] The embodiment of the present application does not limit the grouping / classification method of the terminal device. According to different terminal devices, the specific grouping / classification method is also different, and the following example is used for illustration.

[0122] Take the terminal device as a conventional terminal device, such as a UE. During the paging process, the UE can be grouped / classified according to the services supported by the UE. For example, one type of service corresponds to a group of UEs, or UEs supporting one type of service are a group of UEs. The services supported by the UE include, for example, inventory, read operation, write operation, sensing, positioning, etc. Alternatively, the UE is divided according to the processing capability of the UE. For example, UEs whose processing capability is within a certain capability range are a group of UEs.

[0123] Take the terminal device as an IoT terminal or an A-IoT terminal, such as a tag. Tags that meet certain conditions can be divided into a group / class. The filter corresponding to a class or a group of A-IoT terminals is the same. The filter can be a group identifier, mask, tag ID / UE ID, type / category information or storage area field / content (to be introduced below), etc.

[0124] The type of A-IoT terminal is related to one or more of the following: the manufacturer of the A-IoT terminal, the operator to which it belongs, the current power, the type of internal sensor, or the type of device. For example, the A-IoT terminals are divided according to the type of device where the A-IoT terminal is located. For example, the A-IoT terminals installed on the air conditioner are a group of A-IoT terminals, and the A-IoT terminals installed on the remote control are a group of A-IoT terminals. Accordingly, the filter is the device installed by the A-IoT terminal. For another example, the A-IoT terminals are divided according to the operator to which the A-IoT terminals belong. For example, the A-IoT terminals used by operator A are a group of tags, and the A-IoT terminals used by operator B are a group of tags; accordingly, the filter is the operator. For another example, the tags are divided according to the geographical area where the A-IoT terminals are deployed. For example, the A-IoT terminals deployed in park A are a group of A-IoT terminals, and the A-IoT terminals deployed in park B are a group of A-IoT terminals; accordingly, the filter is the park.

[0125] The A-IoT terminal is divided according to the storage area field, and accordingly, the filter is the storage area field. Taking the A-IoT terminal as a tag as an example, it can be understood that the tag has 4 storage areas: user data area (user memory), factory number area (electronic product code, EPC) storage area, reserved storage area, tag identification storage area (tag identification, TID) storage area. The filter can be a storage area field or the content of the storage area. For example, the filter is "00" + "00000000" + "11111111111…111", where "00" indicates user memory, "00000000" indicates a specific position in user memory (for example, the position corresponding to the first byte), and "11111111111…111" indicates the data content to be filtered, then the filter indicates that the content stored at the first byte of the user memory is "11111111111…111" is a class of tags.

[0126] The above-mentioned division methods of various terminal devices are only examples, and the embodiments of the present application do not limit the division methods of terminal devices. For example, the terminal devices can be divided according to the services / operations supported by the terminal devices. For example, A-IoT terminals that support inventory services are a group of A-IoT terminals, A-IoT terminals that support read operations are a group of A-IoT terminals, and A-IoT terminals that support write operations are a group of A-IoT terminals. The above-mentioned multiple division methods of A-IoT terminals can be combined with each other. For example, A-IoT terminals are divided according to the enterprises using A-IoT terminals and the geographical areas where they are deployed.

[0127] If the network device wants to page a group / type of terminal devices, it can send a paging message within the time window corresponding to the group / type of terminal devices. Taking the network device wanting to page the first group of terminal devices as an example, the network device can send a paging message in the first time window, and the paging message includes the identifier of the first group of terminal devices (which can be referred to as the first group identifier). Each terminal device receives a paging message within its corresponding time window, and finds that the received paging message pages itself, so it responds to the paging message. For example, the first terminal device can receive a paging message within the first time window. If the first terminal device determines that the group identifier carried by the paging message indicates a terminal device group, it determines that the received paging message pages itself. In one implementation, the network device can determine whether the paging message carries the UE ID, the UE group ID or the filter according to the number of terminal devices in each time window. For example, if the number of terminal devices is small, the paging message can carry the UE ID; if the number of terminal devices is large, the paging message can carry the UE group ID or the filter. Of course, the paging message can also carry the UE ID and the UE group ID (or filter).

[0128] Each terminal device does not need to calculate the timing of receiving the paging message based on the ID, which can reduce the processing complexity. It is especially applicable to terminal devices with weak processing capabilities such as A-IoT terminals / IoT terminals. For example, in an application scenario, the first terminal device may be an A-IoT terminal / IoT terminal, or the first group of terminal devices belongs to an A-IoT terminal / IoT terminal. According to the foregoing, it can be seen that the embodiments of the present application have multiple grouping / classification methods for A-IoT terminals / IoT terminals. Taking the paging process as an example, compared with the current paging of conventional UEs, the group identifier carried by the paging message takes the MBS service division as an example. Through the embodiments of the present application, more types of A-IoT terminals / IoT terminals can be covered to avoid failing to page one or some A-IoT terminals / IoT terminals.

[0129] For example, for an A-IoT terminal / IoT terminal, when a network device needs to page a certain terminal device or a certain group of terminal devices, the group identifier can be obtained according to the aforementioned grouping / classification method for the A-IoT terminal / IoT terminal, for example, the ID of the first group of terminal devices is the filter corresponding to the first group of terminal devices. The network device can calculate the PO for sending a paging message according to the ID of the group to which the A-IoT terminal / IoT terminal belongs, and send the paging message in the calculated PO. Correspondingly, the terminal device calculates the PO for sending a paging message according to the ID of the group to which the A-IoT terminal / IoT terminal belongs, and receives the paging message in the calculated PO. Taking paging the first group of terminal devices as an example, the network device can determine the first PO and send a paging message in the first PO. The first PO is used to page at least one terminal device, and the paging message is used to page the first group of terminal devices, which belong to the A-IoT terminal device, and the paging message includes the identifier of the first group of terminal devices. Among them, the identifier of the first group of terminal devices can be the group identifier obtained according to the aforementioned grouping / classification method for the A-IoT terminal / IoT terminal, for example, the identifier of the first group of terminal devices is the filter corresponding to the first group of terminal devices.

[0130] Taking into account the weak clock synchronization capability of the terminal device, if the current conventional UE paging method is used to calculate the PO for receiving the paging message within the time window, and then the paging message is started to be received at the PO, the paging message from the network device may be missed. To this end, in an embodiment of the present application, the network device may send a paging message for paging the first terminal device at all POs within the first time window, and the first terminal device may continuously receive paging messages within the first time window to avoid missing its own paging message and being unable to respond to the paging of the network device, thereby accessing the network as soon as possible. Alternatively, the first terminal device periodically receives paging messages within the first time window to avoid missing its own paging message as much as possible, reduce the delay in accessing the network, and save energy consumption.

[0131] For example, the first paging opportunity is the paging opportunity for the first group of terminal devices, and the second paging opportunity is the paging opportunity for the second group of terminal devices. The network device can send paging messages at the first paging opportunity and the second paging opportunity. The paging message in the first paging opportunity and the paging message in the second paging opportunity both include a first filter and a second fiter, wherein the first filter is used to indicate the first group of terminal devices, and the second fiter is used to indicate the second group of terminal devices. Each terminal device can continuously or periodically detect its own paging message within the first time window.

[0132] It should be noted that the aforementioned first time window can also be a PF. In this case, the first terminal device uses the conventional UE paging method to calculate the position of the PF according to the UE ID / filter / UE group ID, and then calculates the position of the PO in the PF, and receives the paging message at the calculated PO position. The difference is that the UE ID or UE group ID carried by the paging message can be the ID obtained by the aforementioned grouping / classification of the tags.

[0133] One time window can page a group of terminal devices or multiple groups of terminal devices to minimize the latency of each group of terminal devices accessing the network. For example, the paging message sent by the network device in the first time window is also used to page the second group of terminal devices, and each terminal device can receive the paging message in the corresponding time window. For example, the paging message sent by the network device in the first time window includes the identifier of the first group of terminal devices and the identifier of the second group of terminal devices (for example, it can be called the second group identifier), and the terminal devices belonging to the first group of terminal devices receive the paging message in the first time window, and the terminal devices belonging to the second group of terminal devices receive the paging message in the first time window. Similar to the first group of terminal devices, the second group of terminal devices may also belong to A-IoT terminals. For example, see Figure 7 , showing a schematic diagram of a paging message within a time window carrying multiple group identifiers. Figure 7 Take the case where the group identifiers included in the paging message within the time window n1 include group identifier 1 and group identifier 2 as an example.

[0134] In one implementation, the network device may send different filters or group identifiers in different time windows within a cycle, or may send the same filter in different time windows. For example, the network device may send a first filter or group identifier in time window 1 within a cycle, and send a second filter or group identifier in time window 2 within a cycle. For another example, the network device may send the first filter in both time window 1 and time window 2 within a cycle. Time window 1 and time window 2 may be any two different time windows within the first cycle.

[0135] Accordingly, the terminal device can receive the paging message within the time window corresponding to the filter or group identifier to which it belongs.

[0136] In one implementation, the terminal device can receive the paging message in one or more time windows within a cycle. For example, the network device configures N time windows within a cycle T, and the terminal device selects m time windows from the N time windows configured by the network device, where m is greater than or equal to 1 and N is greater than or equal to 1, and the terminal device can receive the paging message in these m time windows.

[0137] In another implementation, the terminal device may receive a paging message within a time window within a cycle. For example, the network device may configure the time position and length of the time window for the terminal device to receive the paging message within a cycle, and the terminal device receives the paging message within the time window. For another example, the network device may configure N time windows within a cycle T, and the terminal device selects the nth time window within the N time windows to receive the paging message. The method for determining n can refer to the relevant content in the aforementioned method B, which will not be repeated here.

[0138] For example, if the network device wants to page a terminal device (e.g., the first terminal device), but is not sure which group (e.g., the first group of terminal devices) the first terminal device belongs to, the network device may send a paging message to the first terminal device in multiple time windows. For example, see Figure 8 , showing a schematic diagram of paging messages in multiple time windows carrying the same identifier. Figure 8 Take 4 time windows (time window 1 to time window 4) and paging terminal device A as an example, assuming that terminal device A belongs to terminal device group B, and the identifier of terminal device A is identifier A. Since the network device is not sure which terminal device group terminal device A belongs to, when the network device needs to page terminal device A, in order to reduce the probability that terminal device A cannot receive the paging message, the network device can send a paging message in all 4 time windows, and the paging message includes identifier A.

[0139] Of course, if a terminal device (e.g., the first terminal device) that the network device needs to page belongs to a terminal device group (e.g., the first group of terminal devices), the network device can calculate the PO of the first terminal device according to the identification (e.g., ID or corresponding filter) of the first group of terminal devices, and send a paging message on the PO, where the paging message includes the identification of the first group of terminal devices. For example, see Fig. 9 , a schematic diagram showing multiple POs within a time window. Fig. 9 A time window in can be a PF or a period. Fig. 9Take the example of a time window including PO1 of terminal device 1 and PO2 of terminal device 2. Assume that terminal device 1 belongs to terminal device group 1, and terminal device 2 belongs to terminal device group 2. The identifier of terminal device group 1 is identifier 1, and the identifier of terminal device group 2 is identifier 2. When the network device needs to page terminal device 1, the network device determines that terminal device 1 belongs to terminal device group 1, and the network device can send a paging message at PO1, and the paging message includes identifier 1. When the network device needs to page terminal device 2, the network device determines that terminal device 2 belongs to terminal device group 2, and the network device can send a paging message at PO2, and the paging message includes identifier 2. Alternatively, the network device can send a paging message carrying identifier 1 within a portion of the time duration of PO1 and PO2; the network device can also send a paging message carrying identifier 2 within a portion of the time duration of PO1 and PO2.

[0140] In one implementation, the network device may page a certain terminal device group (e.g., the first group of terminal devices) in all POs or time windows within a cycle. Alternatively, the network device sends a paging message carrying the identifier of the first group of terminal devices in each PO or time window within a cycle. A cycle here may be a cycle T configured by the network device, or may be a DRX cycle or an eDRX cycle.

[0141] The terminal device initiates random access in response to the paging message of the network device. In one implementation, the terminal device selects the resource closest to the time window of receiving the paging message to initiate random access. For example, see Fig.10, showing multiple time windows. These multiple time windows include time window 1 (including time slot x1 to time slot x2), time window 2 (including time slot y1 to time slot y2), time window 3 (including time slot x3 to time slot x4) and time window 4 (including time slot y3 to time slot y4). Among them, time window 1 is used to paging the first group of terminal devices, and time window 3 is used to paging the second group of terminal devices. Time window 2 is closest to time window 1. Terminal devices that receive paging messages in time window 1 (such as terminal device 1 and terminal device 2) will use the resources in time window 2 to initiate random access, and terminal devices that receive paging messages in time window 1 will simultaneously use the resources in time window 2 close to time window 1 (such as time slot y1) to initiate random access. Similarly, time window 4 is closest to time window 3. The terminal device that receives the paging message in time window 3 will use the resources in time window 4 (such as time slot y3) to initiate random access, and the terminal device that receives the paging message in time window 1 (such as terminal device 3 and terminal device 4) will simultaneously use the resources in time window 2 close to time window 1 to initiate random access. For the scenario of massive A-IoT terminal devices, if there are many terminal devices that paging in the same time period, there will be many terminal devices that initiate random access on the same resources, causing congestion of random access resources. Taking the first group of terminal devices as an example, when the number of terminal devices in the first group of terminal devices is large, there will be many terminal devices that initiate random access in time window 2 at the same time, causing congestion of random access resources in time window 2. Each terminal device competes to initiate random access on the same resources, resulting in delayed access to the network for some terminal devices.

[0142] To this end, in the embodiment of the present application, the network device may indicate / configure resources for random access to each terminal device to reduce random access resource congestion and reduce the delay of the terminal device accessing the network. For example, the network device may also execute S403.

[0143] S403: The network device sends a random access parameter, where the random access parameter is used to indicate available random access resources.

[0144] The network device may indicate / configure resources for random access to each terminal device, and accordingly, the first terminal device receives a random access parameter from the network device. The random access parameter is used to indicate an available random access parameter, or the random access parameter indicates a random access resource. The random access resource indicated by the network device can reduce random access resource congestion and reduce the delay of the terminal device accessing the network, compared with the terminal device defaulting to selecting a resource closest to the time window for receiving a paging message to initiate random access.

[0145] The embodiments of the present application do not limit the signaling that carries the random access parameters. For example, the random access parameters can be sent to the first terminal device together with the paging message sent by the network device to the first terminal device. If the random access parameters are included in the paging message sent to the first terminal device, then S403 is the same as S402, that is, S403 does not exist, and the paging message in S402 includes the random access parameters. For another example, the network device can send the random access parameters to the first terminal device alone, and the random access parameters can be carried in a system message, DCI, a broadcast message, or a synchronization message. In this case, S403 is executed before S402.

[0146] The random access parameters may include one or more of the following: time domain resource information, frequency domain resource information, and code domain resource information. The time domain resource information is used to indicate the time domain resources for random access, the frequency domain resource information is used to indicate the frequency domain resources for random access, and the code domain resource information is used to indicate the spatial domain resources for random access. The time domain resource information, frequency domain resource information, and code domain resource information are introduced below.

[0147] Time domain resource information: For any terminal device or terminal device group, the time domain resource information may indicate a random access time window, the duration of the random access time window is a first duration, and the time domain start position of the random access time window and the time domain end position of the time window for the terminal device to receive a paging message are separated by a second offset. Alternatively, the time domain start position of the random access time window and the time domain start position of the time window for the terminal device to receive a paging message are separated by a second offset. Alternatively, the time domain end position of the random access time window and the time domain start position of the time window for the terminal device to receive a paging message are separated by a second offset. Alternatively, the time domain end position of the random access time window and the time domain end position of the time window for the terminal device to receive a paging message are separated by a second offset.

[0148] For example, the second offset may be predefined or (pre)configured. In this case, the time domain resource information may include first time information, and the first time information may indicate a first duration, that is, the duration of the random access resource. The first terminal device receives the paging message in the first time window, and the time domain position of the random access resource may be determined according to the first time information and the second offset in the time domain resource information. For example, the first duration is the length of n subframes / time slots, and the time domain resource information may include n.

[0149] For another example, the first duration may be predefined or (pre)configured, and the time domain resource information may include the second offset. The first terminal device receives the paging message and may determine the time domain starting position of the random access resource according to the second offset, and then determine the time domain position of the random access resource according to the first duration. For example, the first duration is n subframes / time slots, the second offset may be m subframes / time slots, and the time domain resource information may include m. Alternatively, the time domain resource information may include the second offset and the first time information, which is more flexible.

[0150] Any terminal device can randomly select resources for initiating random access within the random access time window. For example, the random access time window includes n subframes / time slots, and the first terminal device can generate a random number n1, and initiate random access in the n1th subframe / time slot among the n subframes / time slots; the second terminal device can generate a random number n2, and initiate random access in the n2th subframe / time slot among the n subframes / time slots. Alternatively, the network device schedules the resources for each terminal device to initiate random access within a random access time window. Continuing with the above example, for the first terminal device, the network device can configure the first terminal device to initiate random access in the n1th subframe / time slot among the n subframes / time slots; for the second terminal device, the network device can configure the first terminal device to initiate random access in the n2th subframe / time slot among the n subframes / time slots.

[0151] For easier understanding, see Fig.11 , showing multiple time windows. Fig.11 The example includes time windows 1 to 4. Fig.11 For the introduction of time windows 1 to 4, please refer to the above Fig.10 Contents. Taking the first group of terminal devices including terminal device 1 and terminal device 2 as an example, through the method of the embodiment of the present application, the network device can configure terminal device 1 to use time slot y1 within time window 2 to initiate random access, and terminal device 2 to use time slot y2 within time window 2 to initiate random access. Similarly, the network device can configure terminal device 3 to use time slot y3 within time window 4 to initiate random access, and terminal device 4 to use time slot y4 within time window 4 to initiate random access. It can be seen that terminal device 1 and terminal device 2 stagger the time to initiate random access, and terminal device 3 and terminal device 4 stagger the time to initiate random access. Taking time window 2 as an example, compared Fig.10 , Fig.11 Therefore, in the embodiment of the present application, the network device configures the time domain resources for initiating random access for each terminal device, which can reduce congestion and reduce the delay of the terminal device accessing the network.

[0152] It is understandable that the longer the length of the random access preamble, the larger the bandwidth, and the longer the coverage range. The size of the coverage range can be characterized by the coverage level. Accordingly, the longer the length of the random access preamble, the larger the bandwidth, and the higher the coverage level. The time domain resources for random access can be allocated to the terminal device according to the coverage level requirements of the terminal device, so that the random access times of different terminal devices are staggered.

[0153] In one implementation, different times correspond to different coverage levels, or in other words, there is a mapping relationship between coverage levels and time domain resources. For example, coverage level 1 corresponds to T1; coverage level 2 corresponds to T2; coverage level 3 corresponds to T3, and so on. The random access time domain resource of a terminal device with a coverage level of coverage level 1 is T1, the random access time domain resource of a terminal device with a coverage level of coverage level 2 is T2, and the random access time domain resource of a terminal device with a coverage level of coverage level 3 is T3. Each terminal device can select the corresponding random access time domain resource to initiate random access according to its own coverage level.

[0154] Factors causing random access congestion may also include congestion in frequency domain resources and / or spatial domain resources. Therefore, the network device can further reduce congestion by configuring frequency domain resources and / or spatial domain resources for random access, thereby reducing the latency of the terminal device accessing the network. One or more of the random access time domain resources, random access frequency domain resources, and random access code domain resources corresponding to different terminal devices are different. Alternatively, one or more of the random access time domain resources, random access frequency domain resources, and random access code domain resources corresponding to different time windows for detecting paging messages are different.

[0155] Frequency domain resource information: may indicate the offset between the frequency domain resource for random access and the preset frequency domain position, so as to determine the frequency domain resource for random access. For example, the frequency resource information includes the position information of the frequency resource for random access. For example, the frequency resource for random access is the first frequency band, and the frequency domain resource information may include the starting position information and the ending position information of the first frequency band. For another example, the frequency domain resource information may include a third offset, which may be the offset between the frequency domain resource for random access and the preset frequency domain position. The preset frequency domain resource may be (pre) configured. The terminal device may randomly select a part of the frequency domain resources in the frequency domain resource to initiate random access. For example, the frequency domain resource for random access includes P resource blocks (RBs), the first terminal device may generate a random number p1, and use the p1th RB among the P RBs to initiate random access; the second terminal device may generate a random number p2, and use the p2th RB among the P RBs to initiate random access, so as to stagger the random access as much as possible, and P, p1 and p2 are all integers.

[0156] Code domain resource information: may include information about the sequence used for random access, which may be a (Zadoff-Chu, ZC) sequence. It is understandable that a set of random access preambles (preambles) for a cell is obtained by cyclically shifting the ZC root sequence. A cell may be configured with a specific set of random access preambles for terminal devices within the coverage of the cell to access the network equipment of the cell. The random access preamble set for each cell may be formed by cyclic shifts of multiple (for example, 64) ZC sequences. The preambles may be orthogonal, and different terminal devices may share the same time domain resources to send preambles. The preamble corresponds to an index range, and different indexes correspond to different ZC sequences. Each terminal device may randomly select an index to achieve orthogonality between preambles. For example, the first terminal device randomly selects index1, uses sequence 1 corresponding to index1 to generate a preamble, and initiates random access; the second terminal device randomly selects index2, uses sequence 2 corresponding to index2 to generate a preamble, and initiates random access.

[0157] In possible scenarios, a terminal device may be paged multiple times within a period of time. For example, a network device needs to page a group of terminal devices, but not all terminal devices in the group are paged in a discontinuous reception cycle. The network device will page the group of terminal devices in the next discontinuous cycle, and some terminal devices will be paged during both paging processes. For example, the group of terminal devices includes terminal device 1 and terminal device 2. In the first discontinuous reception cycle, terminal device 1 fails to access during the random access process, and terminal device 2 succeeds in random access. Then the network device needs to page terminal device 1 in the second discontinuous reception cycle. At this time, terminal device 2 is still paged, but for terminal device 2, this paging is unnecessary and will bring additional power consumption.

[0158] To this end, an embodiment of the present application provides a paging method 1200, in which the terminal device may not respond to or ignore paging messages within a certain period of time, thereby minimizing the power consumption of the terminal device.

[0159] See also Fig.12 , Fig.12 A schematic diagram of the process of the paging method 1200 provided in an embodiment of the present application is shown. Figure 4 The method is described from the perspective of the interaction between the network device and the first terminal device. It should be understood that the paging method 1200 can also be implemented by other devices, such as a chip or a communication device with communication functions. Fig.12 As shown, the process of the paging method 1200 includes the following steps.

[0160] S1201. A network device sends a first paging message to a first terminal device, where the first paging message is used to page a first group of terminal devices.

[0161] Correspondingly, the first terminal device receives the first paging message. The first paging message is used to page the first group of terminal devices, and the first paging message may include the identifier of the first group of terminal devices. The first terminal device belongs to the first group of terminal devices. When the first terminal device receives the first paging message, it determines to respond to the first paging message according to the identifier carried by the first paging message.

[0162] Considering that the network device may page the first terminal device multiple times within a period of time, additional power consumption of the first terminal device is caused. For this reason, the first paging message also includes second time information, and the second time information may indicate to ignore the paging message with the same terminal device identifier received within the time indicated by the second time information; or, the second indication information may indicate to refuse to respond to the paging message with the same terminal device identifier received within the time indicated by the second time information. The second time information may indicate a second duration, for example, the second time information includes a first starting time and a second duration; or, the second time information includes a first starting time and a first ending time, and the first starting time and the first ending time are separated by a second duration.

[0163] S1202. The network device sends a second paging message to the first terminal device, where the second paging message is used to page the first group of terminal devices.

[0164] Take the example of a first terminal device receiving a first paging message and a second paging message in succession. Both the first paging message and the second paging message are used to page a first group of terminal devices. The first terminal device receives the first paging message and responds to the first paging message. If the second paging message is received within the second time period, the first terminal device may refuse to respond to the second paging message. When the first terminal device receives the third paging message again after the second time period, the third paging message includes the identifier of the first group of terminal devices, and the first terminal device belongs to the first group of terminal devices, then the first terminal device may respond to the third paging message. It should be noted that refusing to respond to the second paging message can be understood as: ignoring the second paging message, or receiving the second paging message, but discarding the second paging message; or receiving the second paging message, but not initiating random access.

[0165] In one implementation, after the first terminal device responds to the first paging message, the timing starts after the data transmission between the first terminal device and the network device is successful (eg Fig.12 Example 1). If the second paging message is received within the second time period, the second paging message is ignored or rejected. Alternatively, the timing starts after the first terminal device responds to the first paging message (e.g. Fig.12Example 2 in the example). If the second paging message is received within the second time period, the second paging message is ignored or rejected. The first terminal device responds to the first paging message, which can also be considered that the first terminal device randomly accesses the network device.

[0166] In a possible scenario, the network device still needs to page the first terminal device within the second time period. If the first terminal device always ignores or refuses to respond to the paging message received within the second time period, then the first terminal device cannot meet the actual needs of the network device within the second time period.

[0167] To this end, if the network device wants the first terminal device to respond to a paging message that pages itself within the second time period, the second paging message may include a valid identifier, which indicates whether the second paging message is valid, or the valid identifier indicates whether to respond to a paging message with the same terminal device identifier received. "Whether to respond to a paging message with the same terminal device identifier received" includes whether to respond to a paging message with the same terminal device identifier received within the time indicated by the second time information.

[0168] For example, the valid identifier of the second paging message can be 1-bit information, and the value of this 1-bit is "1", indicating that the second paging message is valid, and the first terminal device can respond to the paging message with the same terminal device identifier as the received one. If the paging message includes the second time information, the first terminal device can respond to the paging message with the same terminal device identifier as the received one within the time indicated by the second time information. For example, the first terminal device receives and responds to the first paging message. If the second paging message is received within the subsequent second time period, and the second paging message includes the identifier and the valid identifier of the first group of terminal devices, when the value of the valid identifier is "1", the first terminal device responds to the second paging message. Correspondingly, the value of this 1-bit is "0", indicating that the second paging message is invalid, and the first terminal device refuses to respond to the paging message with the same terminal device identifier as the received one. If the paging message includes the second time information, the first terminal device can refuse to respond to the paging message with the same terminal device identifier as the received one within the time indicated by the second time information. When the first terminal device receives and responds to the first paging message, if it receives the second paging message within a subsequent second time period, and the second paging message includes the identifier and valid identifier of the first group of terminal devices, and the value of the valid identifier is "0", then the first terminal device responds to the second paging message.

[0169] Alternatively, the second paging message includes a valid identifier, indicating that the first terminal device responds to the received paging message with the same terminal device identifier. The second paging message does not include a valid identifier, indicating that the first terminal device does not need to respond to the received paging message with the same terminal device identifier. For example, when the first paging message includes the second time information, the first terminal device receives and responds to the first paging message, if the second paging message is received within a subsequent second time period, and the second paging message includes the identifier of the first group of terminal devices and the valid identifier, then the first terminal device responds to the second paging message. When the first paging message includes the second time information, the first terminal device receives and responds to the first paging message, if the second paging message is received within a subsequent second time period, and the second paging message includes the identifier of the first group of terminal devices, and the second paging message does not include a valid identifier, then the first terminal device refuses to respond to the second paging message.

[0170] Alternatively, the second paging message itself may indicate whether the second paging message is valid or invalid. In this case, the second paging message does not carry a valid identifier and / or the second time information, and may also indicate whether the second paging message is valid. For example, the second paging message is an unselect signaling. When the network device wants the first terminal device to respond to a paging message that pages itself within the second time period, the second paging message does not include an identifier of the first terminal device and the second time information. When the network device does not want the first terminal device to respond to a paging message that pages itself within the second time period, the second paging message includes an identifier of the first terminal device and the second time information. It should be noted that the embodiment of the present application does not limit the specific name of the unselect signaling.

[0171] In one implementation, the second paging message may carry a UE ID or a filter or a group identifier to indicate a terminal or a terminal group that is not to be paged or selected. For example, the second paging message carries the first UE ID. If the ID of the terminal device is the first UE ID, the terminal device does not respond to the second paging message. On the contrary, if the ID of the terminal device is not the first UE ID, the terminal device may respond to the second paging message. Similarly, if the filter or group identifier corresponding to the terminal device belongs to the filter or group identifier carried by the second paging message, the terminal device does not respond to the second paging message.

[0172] In the paging method 1200, by carrying time information in the paging message, the number of times the terminal device responds to the paging message within a period of time can be reduced, thereby reducing the power consumption of the terminal device.

[0173] The various embodiments provided in the embodiments of the present application can be executed separately or in combination with each other. For example, the paging method 400 and the paging method 1200 can be combined with each other. In the embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of the interaction between the first terminal device and the network device. Among them, the steps performed by the first terminal device can be implemented by different functional entities constituting the first terminal device. The steps performed by the network device can be implemented by different functional entities constituting the network device. For example, the network device can be a CU-DU architecture, the CU can generate a paging message, and the DU can send a paging message. In order to implement the functions of the method provided in the above-mentioned embodiments of the present application, the first terminal device and the network device may include a hardware structure and / or a software module, and the above-mentioned functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a certain function of the above-mentioned functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0174] The following describes the communication device used to implement the above method in the embodiment of the present application in conjunction with the accompanying drawings. Therefore, the above contents can be used in subsequent embodiments, and repeated contents will not be repeated.

[0175] Fig.13 1 is a schematic block diagram of a communication device 1300 provided in an embodiment of the present application. The communication device 1300 may be a network device or a terminal device in the above-mentioned embodiment. For example, the communication device 1300 may be Figure 1The communication device 1300 is a network device or an A-IoT terminal in the network device; or, the communication device 1300 is a chip (system) in the network device or a chip (system) in the terminal device; or, the communication device 1300 is a software module of the network device or the terminal device. The communication device 1300 can correspond to the functions or steps implemented by the terminal device or the network device in the above-mentioned various method embodiments. The communication device 1300 may include a processing module 1310 and a transceiver module 1320. Optionally, a storage module may also be included, which may be used to store instructions (codes or programs) and / or data. The storage module may be, for example, a memory. The processing module 1310 and the transceiver module 1320 may be coupled to the storage module. For example, the processing module 1310 may read instructions (codes or programs) and / or data in the storage module to implement the corresponding method. When the communication device 1300 is a chip in the terminal device, the storage module may be a storage module in the chip, such as a register, a cache, etc. For example, the storage module may also be a storage module located outside the chip in the network device / terminal device, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc. The above-mentioned units may be independently arranged or partially or fully integrated.

[0176] In one possible implementation, the processing module 1310 may be a processor or a controller, such as a general-purpose central processing unit (CPU), a general-purpose processor, a digital signal processing (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present application. The processor may also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The transceiver module 1320 is a transceiver, an interface circuit, a bus, a pin or other possible communication interface for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the transceiver module 1320 is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit for the chip to send signals to other chips or devices.

[0177] In some possible implementations, the communication device 1300 can implement the behaviors and functions of the first terminal device in the above method embodiments. The communication device 1300 can be a terminal device, such as an A-IoT terminal or UE, or a component (such as a chip or circuit) applied to a terminal device, or a chip or chipset in a terminal device or a part of a chip used to perform related method functions, or a software module that can implement the method executed by the first terminal device in the above method (such as paging method 400 and / or paging method 1200), without limitation.

[0178] For example, the communication device 1300 may implement Figure 4 and / or Fig.12 For example, the transceiver module 1320 may be used to execute Figure 4 S402 in the embodiment shown, and / or other processes for supporting the technology described herein; the processing module 1310 can be used to execute Figure 4 S401 in the illustrated embodiment, and / or other processes for performing the techniques described herein.

[0179] In one implementation, the processing module 1310 is used to determine a first time window, and the first time window is used to page at least one group of terminal devices. The transceiver module 1320 is used to receive a paging message within the first time window, and the paging message is used to page a first group of terminal devices, and the first group of terminal devices belongs to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0180] In another implementation, the processing module 1310 is used to determine a first PO, which is used to page at least one group of terminal devices. The transceiver module 1320 is used to receive a paging message in the first PO, which is used to page a first group of terminal devices, the first group of terminal devices belongs to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0181] As an optional implementation manner, the transceiver module 1320 is specifically configured to: continuously or periodically receive a paging message within the first time window.

[0182] As an optional implementation manner, the transceiver module 1320 is further used to: receive configuration information, where the configuration information is used to indicate the first time window.

[0183] As an optional implementation manner, the configuration information includes starting position information of a first time window within a period and / or duration information of the first time window.

[0184] As an optional implementation manner, the configuration information includes the number N of time windows in a cycle, where N is an integer greater than or equal to 2.

[0185] As an optional implementation manner, the first time window is the nth time window among N time windows in a cycle, where n is an integer greater than or equal to 0.

[0186] As an optional implementation method, the paging message is also used to page a second group of terminal devices, where the second group of terminal devices belong to A-IoT terminals. The paging message also includes identifiers of the second group of terminal devices.

[0187] As an optional implementation manner, the paging message includes receiving a random access parameter, where the random access parameter is used to indicate available random access resources.

[0188] As an optional implementation method, the random access parameters include time domain resource information; wherein the time domain resource information includes a second offset and / or a first time information, the second offset is used to determine the time domain starting position of the random access resource, and the first time information is used to indicate the duration of the random access resource; or, the time domain resource information includes a coverage level, and the coverage level has a mapping relationship with the time domain resource of the random access resource.

[0189] As an optional implementation manner, the random access parameter includes frequency domain resource information, the frequency domain resource information includes position information or a third offset of the frequency domain resources used for random access, and the third offset is used to determine the frequency domain resources for random access.

[0190] As an optional implementation manner, the random access parameter includes code domain resource information, and the code domain resource information includes information of a sequence used for random access.

[0191] As an optional implementation manner, the paging message further includes second time information, where the second time information indicates: ignore paging messages with the same terminal device identifier received within the time indicated by the second time information.

[0192] As an optional implementation manner, the paging message further includes a valid identifier, and the valid identifier indicates whether to respond to the paging message with the same terminal device identifier as received.

[0193] For example, the communication device 1300 may implement Figure 4 and / or Fig.12 For example, the transceiver module 1320 may be used to perform Figure 4 S402 in the embodiment shown, and / or other processes for supporting the technology described herein; the processing module 1310 can be used to execute Figure 4 S401 in the illustrated embodiment, and / or other processes for performing the techniques described herein.

[0194] In one implementation, the processing module 1310 is used to determine a first time window, and the first time window is used to page at least one group of terminal devices. The transceiver module 1320 is used to send a paging message within the first time window, and the paging message is used to page a first group of terminal devices, and the first group of terminal devices belongs to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0195] In another implementation, the processing module 1310 is used to determine a first PO, which is used to page at least one group of terminal devices. The transceiver module 1320 is used to send a paging message in the first PO, which is used to page a first group of terminal devices, the first group of terminal devices belongs to A-IoT terminals, and the paging message includes an identifier of the first group of terminal devices.

[0196] As an optional implementation manner, the transceiver module 1320 is further used to: send configuration information, where the configuration information is used to indicate the first time window.

[0197] As an optional implementation manner, the configuration information includes starting position information of a first time window within a period and / or duration information of the first time window.

[0198] As an optional implementation manner, the configuration information includes the number N of time windows in a cycle, where N is an integer greater than or equal to 2.

[0199] As an optional implementation method, the paging message is also used to page a second group of terminal devices, where the second group of terminal devices belong to A-IoT terminals. The paging message also includes identifiers of the second group of terminal devices.

[0200] As an optional implementation manner, the paging message includes a random access parameter, where the random access parameter is used to indicate available random access resources.

[0201] As an optional implementation method, the random access parameters include time domain resource information; wherein the time domain resource information includes a second offset and / or a first time information, the second offset is used to determine the time domain starting position of the random access resource, and the first time information is used to indicate the duration of the random access resource; or, the time domain resource information includes a coverage level, and the coverage level has a mapping relationship with the time domain resource of the random access resource.

[0202] As an optional implementation manner, the random access parameter includes frequency domain resource information, the frequency domain resource information includes position information or a third offset of the frequency domain resources used for random access, and the third offset is used to determine the frequency domain resources for random access.

[0203] As an optional implementation manner, the random access parameter includes code domain resource information, and the code domain resource information includes information of a sequence used for random access.

[0204] As an optional implementation manner, the paging message further includes second time information, where the second time information indicates: ignore paging messages with the same terminal device identifier received within the time indicated by the second time information.

[0205] As an optional implementation manner, the paging message further includes a valid identifier, and the valid identifier indicates whether to respond to the paging message with the same terminal device identifier as received.

[0206] When the communication device 1300 is a chip-type device or circuit, the transceiver module may be an input / output circuit and / or a communication interface; the processing module may be an integrated processor or microprocessor or integrated circuit.

[0207] Fig.14 1400 is a schematic block diagram of a communication device 1400 provided in an embodiment of the present application. The communication device 1400 may be a network device or a first terminal device in the above-mentioned embodiment. For example, the communication device 1400 may be Figure 1 The network device or A-IoT terminal in the communication device 1400; or the communication device 1400 is a chip (system) in the network device or A-IoT terminal. In the embodiment of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. For specific functions, please refer to the description in the above method embodiment.

[0208] The communication device 1400 includes one or more processors 1401, which are used to implement or support the communication device 1400 to implement the function of the first terminal device or network device in the method provided in the embodiment of the present application. Please refer to the detailed description in the method example for details, which will not be repeated here. The processor 1401 may also be referred to as a processing unit or a processing module, which may implement certain control functions. The processor 1401 may be a general-purpose processor or a dedicated processor, etc. For example, it may include: a baseband processor, a central processing unit, an application processor, a modem processor, a graphics processor, an image signal processor, a digital signal processor, a video codec processor, a controller, a memory, and / or a neural network processor, etc. The baseband processor may be used to process communication protocols and communication data. The central processing unit may be used to control the communication device 1400 (e.g., a network device or a terminal device), execute software programs and / or process data. Different processors may be independent devices, or they may be integrated in one or more processors, for example, integrated in one or more application-specific integrated circuits.

[0209] In one design, the processor 1401 may include a program 1403 (sometimes also referred to as code or instruction), and the program 1403 may be executed on the processor 1401 to enable the communication device 1400 to perform the method described in the following embodiments. In another possible design, the communication device 1400 includes a circuit ( Fig.14 (not shown), the circuit is used to implement the network device or the first terminal device function in the above-mentioned embodiment.

[0210] In one design, the communication device 1400 may include one or more memories 1402 on which a program 1404 (sometimes referred to as code or instruction) is stored. The program 1404 may be executed on the processor 1401 so that the communication device 1400 performs the method described in the above method embodiment, for example Figure 4 and / or Fig.12 The process shown.

[0211] In one design, the processor 1401 and / or the memory 1402 may include an artificial intelligence (AI) module 1407 and an AI module 14010, and the AI ​​module is used to implement AI-related functions. The AI ​​module may be implemented by software, hardware, or a combination of software and hardware. For example, the AI ​​module may include a RAN intelligent controller (RAN intelligent controller, RIC) module. For example, the AI ​​module may be a near real-time RIC or a non-real-time RIC.

[0212] In a possible design, data may also be stored in the processor 1401 and / or the memory 1402. The processor and the memory may be provided separately or integrated together.

[0213] In a possible design, the communication device 1400 may also include a transceiver 1405 and / or an antenna 1406. The processor 1401 may also be sometimes referred to as a processing unit, which controls the communication device 1400. The transceiver 1405 may also be sometimes referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which is used to implement the transceiver function of the communication device through the antenna 1406.

[0214] In a possible design, the communication device 1400 may also include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, an antenna, a speaker, a microphone, an input / output module, a sensor module, a motor, a camera, or a display screen, etc. It is understood that in some embodiments, the communication device 1400 may include more or fewer components, or some components may be integrated, or some components may be separated. These components may be implemented in hardware, software, or a combination of software and hardware.

[0215] The communication device in the above embodiment may be a terminal device (or network device), or a circuit, or a chip applied to a terminal device (or network device) or other combined devices, components, etc. having the above terminal device (or network device). When the communication device is a terminal device (or network device), the transceiver module may be a transceiver, which may include an antenna and a radio frequency circuit, etc., and the processing module may be a processor, such as a CPU. When the communication device is a component having the functions of the above terminal device (or network device), the transceiver module may be a radio frequency unit, and the processing module may be a processor. When the communication device is a chip system, the communication device may be an FPGA, a dedicated ASIC, a system on chip (SoC), a CPU, a network processor (NP), a DSP, a microcontroller unit (MCU), a programmable logic device (PLD) or other integrated chips. The processing module may be a processor of a chip system. The transceiver module or the communication interface may be an input / output interface or an interface circuit of a chip system. For example, the interface circuit may be a code / data read / write interface circuit. The interface circuit can be used to receive code instructions (the code instructions are stored in the memory, can be read directly from the memory, or can be read from the memory through other devices) and transmit them to the processor; the processor can be used to run the code instructions to execute the method in the above method embodiment. For another example, the interface circuit can also be a signal transmission interface circuit between the communication processor and the transceiver.

[0216] The embodiment of the present application also provides a communication system. Specifically, the communication system includes a network device and a terminal device. Exemplarily, the communication system includes a Figure 4 Alternatively, the communication system includes a terminal device and a network device for implementing Fig.12 Alternatively, the communication system includes a terminal device and a network device for implementing Figure 4 and Fig.12 Terminal equipment and network equipment with related functions. Please refer to the relevant description in the above method embodiment for details, which will not be repeated here.

[0217] The present application also provides a computer-readable storage medium including instructions, which, when executed on a computer, causes the computer to execute Figure 4 and / or Fig.12 A method executed by a first terminal device or a network device.

[0218] The present application also provides a computer program product, including instructions, which, when executed on a computer, causes the computer to execute Figure 4 and / or Fig.12 A method executed by a first terminal device or a network device.

[0219] The embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the functions of the terminal device or the network device in the above method. The chip system may be composed of a chip, or may include a chip and other discrete devices.

[0220] In order to achieve the above Figure 13-14 In order to realize the functions of the communication device, the embodiment of the present application further provides a chip, including a processor, for supporting the communication device to realize the functions involved in the terminal device or network device in the above method embodiment. In one possible design, the chip is connected to a memory or the chip includes a memory, and the memory is used to store the computer programs or instructions and data necessary for the communication device.

[0221] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0222] In various embodiments of the present application, "when", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances, which does not limit the time, nor does it require that the device must have a judgment action when it is implemented, nor does it mean that there are other limitations. Unless otherwise specified, "if" and "if" are interchangeable, and "when" and "in the case of" are interchangeable. "When" and "if" / "if" are interchangeable.

[0223] In the embodiments of the present application, the number of nouns, unless otherwise specified, means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "plural" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0224] The ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first group of terminal devices and the second group of terminal devices refer to two different terminal device groups, and do not indicate the difference in content, priority or importance of the two terminal device groups. For a technical feature, the technical features in the technical feature are distinguished by "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "A", "B", "C" and "D". For example, the method A and method B in this article are only to distinguish different conjugate processing methods, and do not limit the order of precedence or size between method A and method B, as well as the priority or importance.

[0225] Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0226] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0227] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0228] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0229] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the part of the technical solution of the present application that contributes essentially or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), RAM, magnetic disks or optical disks.

[0230] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A paging method, characterized in that: include: Determining a first time window, where the first time window is used to paging at least one group of terminal devices; A paging message is received within the first time window, where the paging message is used to page a first group of terminal devices, where the first group of terminal devices belong to ambient Internet of Things (A-IoT) terminals, and the paging message includes identifiers of the first group of terminal devices.

2. The method according to claim 1, characterized in that Receiving a paging message within a first time window includes: The paging message is continuously or periodically received within the first time window.

3. The method according to claim 1 or 2, characterized in that The method further comprises: Configuration information is received, where the configuration information is used to indicate the first time window.

4. The method according to claim 3, characterized in that The configuration information includes starting position information of the first time window within a period and / or duration information of the first time window.

5. The method according to claim 3, characterized in that The configuration information includes the number N of time windows in a cycle, where N is an integer greater than or equal to 2.

6. The method according to claim 5, characterized in that The first time window is the nth time window within the N time windows within a cycle, where n is an integer greater than or equal to 0.

7. The method according to any one of claims 1 to 6, characterized in that The paging message is also used to page a second group of terminal devices, where the second group of terminal devices belong to A-IoT terminals, and the paging message also includes identifiers of the second group of terminal devices.

8. The method according to any one of claims 1 to 7, characterized in that: The paging message further includes a random access parameter, where the random access parameter is used to indicate available random access resources.

9. The method according to claim 8, characterized in that The random access parameters include time domain resource information; The time domain resource information includes a second offset and / or first time information, the second offset is used to determine a time domain starting position of the random access resource, and the first time information is used to indicate a duration of the random access resource; or, The time domain resource information includes a coverage level, and the coverage level has a mapping relationship with the time domain resource of the random access resource.

10. The method according to claim 8 or 9, characterized in that The random access parameter includes frequency domain resource information, and the frequency domain resource information includes position information of the frequency domain resource used for random access or a third offset, and the third offset is used to determine the frequency domain resource for random access.

11. The method according to any one of claims 8 to 10, characterized in that: The random access parameter includes code domain resource information, and the code domain resource information includes information of a sequence used for random access.

12. The method according to any one of claims 1 to 11, characterized in that The paging message further includes second time information, where the second time information indicates: ignoring paging messages with the same terminal device identifier received within the time indicated by the second time information.

13. The method according to any one of claims 1 to 12, characterized in that The paging message further includes a valid identifier, and the valid identifier indicates whether to respond to the paging message with the same terminal device identifier as received.

14. A paging method, characterized in that: include: Determining a first time window, where the first time window is used to paging at least one group of terminal devices; A paging message is sent within the first time window, where the paging message is used to page a first group of terminal devices, where the first group of terminal devices belong to ambient Internet of Things (A-IoT) terminals, and the paging message includes identifiers of the first group of terminal devices.

15. A paging method, characterized in that: include: Determine a first paging occasion PO, where the first PO is used to paging at least one group of terminal devices; A paging message is sent in the first PO, where the paging message is used to page a first group of terminal devices, where the first group of terminal devices belong to ambient Internet of Things A-IoT terminals, and the paging message includes identifiers of the first group of terminal devices.

16. The method according to claim 14, characterized in that The method further comprises: Send configuration information, where the configuration information is used to indicate the first time window.

17. The method according to claim 16, characterized in that The configuration information includes starting position information of the first time window within a period and / or duration information of the first time window.

18. The method according to claim 16, characterized in that The configuration information includes the number N of time windows in a cycle, where N is an integer greater than or equal to 2.

19. The method according to any one of claims 14, 16-18, characterized in that: The paging message is also used to page a second group of terminal devices, where the second group of terminal devices belong to A-IoT terminals, and the paging message also includes identifiers of the second group of terminal devices.

20. The method according to any one of claims 14, 16-19, characterized in that: The paging message further includes a random access parameter, where the random access parameter is used to indicate available random access resources.

21. The method of claim 20, wherein: The random access parameters include time domain resource information; The time domain resource information includes a second offset and / or first time information, the second offset is used to determine a time domain starting position of the random access resource, and the first time information is used to indicate a duration of the random access resource; or, The time domain resource information includes a coverage level, and the coverage level has a mapping relationship with the time domain resource of the random access resource.

22. The method according to claim 20 or 21, characterized in that The random access parameter includes frequency domain resource information, and the frequency domain resource information includes position information or a third offset of the frequency domain resource used for random access, and the third offset is used to determine the frequency domain resource for random access.

23. The method according to any one of claims 20 to 22, characterized in that The random access parameter includes code domain resource information, and the code domain resource information includes information of a sequence used for random access.

24. The method according to any one of claims 14 to 23, characterized in that The paging message further includes second time information, where the second time information indicates: ignoring paging messages with the same terminal device identifier received within the time indicated by the second time information.

25. The method according to any one of claims 14 to 24, characterized in that The paging message further includes a valid identifier, and the valid identifier indicates whether to respond to the paging message with the same terminal device identifier as received.

26. A communication device, characterized in that: The method comprises a module for executing the method according to any one of claims 1 to 13, or comprises a module for executing the method according to any one of claims 14 to 25.

27. A communication device, characterized in that: The device comprises a processor, wherein the processor is configured to execute one or more computer programs or instructions so that the communication device executes the method according to any one of claims 1 to 13, or the communication device executes the method according to any one of claims 14 to 25.

28. A communication system, characterized in that: The method comprises a first communication device and a second communication device, wherein the first communication device is used to execute the method according to any one of claims 1 to 13, and the second communication device is used to execute the method according to any one of claims 14 and 16-25.

29. A computer-readable storage medium, characterized in that: A computer program or instruction is stored, wherein the computer program or instruction is used to implement the method according to any one of claims 1 to 13, or to implement the method according to any one of claims 14 to 25.

30. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is run on a computer, the computer is caused to perform the method according to any one of claims 1 to 13, or the computer is caused to perform the method according to any one of claims 14 to 25.

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