Communication method and communication device

Abstract

Provided are a communication method and a communication device, the method comprising: a first device communicating with a second device in a first mode, the first device in the first mode satisfying at least one of the following items: in an idle state or in a case of disconnection from a network, information is not actively sent or a communication request is initiated; and sending information according to the trigger signal sent by the second device. The method in the embodiment of the invention is helpful for reducing the power consumption of the first equipment.

Description

Communication method and communication device Technical Field

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

[0002] Electronic tags (Tags) can harvest energy from electromagnetic waves in space and use it to power their load circuits, enabling low-power or even battery-free communication. However, the energy harvested by electronic tags is limited, and they may not be able to routinely initiate active communication. Therefore, further reducing the power consumption of electronic tags has become a pressing technical challenge.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a communication method and a communication device. The following describes various aspects of the embodiments of the present application.

[0005] In a first aspect, a communication method is provided, including: a first device communicates with a second device in a first mode, and the first device satisfies at least one of the following when in the first mode: does not actively send information or initiate a communication request in an idle state or when disconnected from a network; and sends information according to a trigger signal sent by the second device.

[0006] In a second aspect, a communication method is provided, including: a second device communicates with a first device in a first mode, wherein the first device satisfies at least one of the following when in the first mode: not actively sending information or initiating communication requests when in an idle state or disconnected from a network; and sending information according to a trigger signal sent by the second device.

[0007] In a third aspect, a communication device is provided, including: a communication unit for communicating with a second device in a first mode, and when the device is in the first mode, at least one of the following is satisfied: in an idle state or disconnected from the network, it does not actively send information or initiate a communication request; and it sends information according to a trigger signal sent by the second device.

[0008] In a fourth aspect, a communication device is provided, comprising: a communication unit for communicating with a first device in a first mode, wherein the first device satisfies at least one of the following when in the first mode: not actively sending information or initiating communication requests when in an idle state or disconnected from the network; and sending information according to a trigger signal sent by the device.

[0009] In a fifth aspect, a communication device is provided, comprising a memory, a transceiver and a processor, wherein the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method described in the first aspect.

[0010] In the sixth aspect, a communication device is provided, comprising a memory, a transceiver and a processor, wherein the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method described in the second aspect.

[0011] In the first aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect.

[0012] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the second aspect.

[0013] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the first aspect.

[0014] In a tenth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the second aspect.

[0015] In an eleventh aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method described in the first aspect.

[0016] In a twelfth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method described in the second aspect.

[0017] In a thirteenth aspect, a computer program is provided, which enables a computer to execute the method described in the first aspect.

[0018] In a fourteenth aspect, a computer program is provided, which enables a computer to execute the method described in the second aspect.

[0019] In an embodiment of the present application, when the first device is in the first mode, at least one of the following is satisfied: not actively sending information or initiating a communication request when in an idle state or disconnected from the network, and sending information according to a trigger signal sent by the second device. That is, when the first device communicates with the second device in the first mode, it does not need to actively send information or communication requests, thereby helping to reduce the power consumption of the first device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is an example diagram of a wireless communication system used in an embodiment of the present application.

[0021] FIG2 is a diagram illustrating the working principle of the electronic tag in an embodiment of the present application.

[0022] FIG3 is a schematic flowchart of an electronic tag communicating in a first mode in one embodiment of the present application.

[0023] FIG4 is a schematic flowchart of an electronic tag communicating in a first mode in another embodiment of the present application.

[0024] FIG5 is a schematic flowchart of an electronic tag communicating in a first mode in yet another embodiment of the present application.

[0025] FIG6 is a schematic flowchart of a communication method provided in one embodiment of the present application.

[0026] FIG7 is a schematic flowchart of a communication method provided in another embodiment of the present application.

[0027] FIG8 is a schematic flowchart of a communication method provided in yet another embodiment of the present application.

[0028] FIG9 is a schematic flowchart of a communication method provided in yet another embodiment of the present application.

[0029] FIG10 is a schematic structural diagram of a communication device provided in one embodiment of the present application.

[0030] FIG11 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0031] FIG12 is a schematic structural diagram of a device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solution in this application will be described below with reference to the accompanying drawings.

[0033] FIG1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a user equipment (UE) 120. The network device 110 may communicate with the UE 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the UE 120 within the coverage area. The UE 120 may access a network (e.g., a wireless network) through the network device 110.

[0034] Figure 1 exemplarily shows a network device and two UEs. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include a different number of terminal devices within its coverage area, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

[0035] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0036] The UE in the embodiments of the present application may also be referred to as a terminal device, an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The UE in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device or an in-vehicle device with wireless connection capabilities. The UE in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0037] The network device in the embodiments of the present application may be a device for communicating with a UE, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a UE to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.

[0038] In some embodiments, the network device can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile network device, and one or more cells can move according to the location of the mobile network device. In other examples, the helicopter or drone can be configured to act as a device for communicating with another network device. In some embodiments, the network device can refer to a CU or a DU, or the network device can include a CU and a DU, or the network device can also include an AAU.

[0039] It should be understood that network devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the network devices and the scenarios in which they are used.

[0040] It should also be understood that all or part of the functions of the network device and UE in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0041] The UE in the embodiment of the present application may also be an electronic tag (Tag) or other zero-power device. The electronic tags in the implementation of the present application include but are not limited to radio frequency identification (RFID) tags, passive IoT devices (passive IoT) tags, ambient IoT (AIoT) tags, or other electronic tags.

[0042] Backscatter technology has been widely applied in production, for example, in radio frequency identification (RFID) systems, tracking devices, remote switches, medical telemetry, and low-cost sensor networks. Backscatter is a wireless technology that enables signal transmission and encoding without an active transmitter. Similar to the principle of radar, electromagnetic waves are partially reflected when they strike an object. The strength of the reflected signal depends on the object's shape, material, and distance. From a radar perspective, each object has a radar cross-section (RCS).

[0043] The widespread adoption of electronic tags is largely due to the growing maturity of backscatter technology. Electronic tags can communicate via backscatter, modulating the reflected signal by changing its RCS. Backscatter transmitters modulate received RF signals to transmit data, eliminating the need to generate their own RF signals. For example, a backscatter transmitter in an electronic tag can modulate and reflect received radio frequency (RF) signals to transmit data, rather than generating its own RF signals.

[0044] The basic principle of RF energy harvesting is to collect electromagnetic wave energy from space through electromagnetic induction. Electronic tags can use this energy to efficiently drive their load circuits (such as low-power computing and sensors), enabling battery-free communication.

[0045] The following briefly describes the working principle of the electronic tag with reference to Figure 2. As shown in Figure 2, the network device can communicate with the electronic tag in a variety of ways.

[0046] A cellular direct connection can be established between the network device and the electronic tag. For example, the RF signal sent by the network device 210 can power the electronic tag 220 and trigger the electronic tag 220 to perform backscattering. In response, the electronic tag 220 can collect energy from the RF signal through radio frequency energy harvesting, and modulate and reflect the received RF signal to transmit data.

[0047] The network device can wake up the electronic tag with zero power consumption. For example, the RF signal sent by the network device 210 can trigger the electronic tag 230 to start (or wake up the electronic tag 230) and supply energy to the electronic tag 230. Accordingly, the electronic tag 230 can enter the working state under the triggering of the RF signal and collect energy from the RF signal through radio frequency energy harvesting.

[0048] A cellular direct connection with auxiliary power supply can be established between the network device and the electronic tag. For example, the RF signal sent by the network device 212 can provide energy to the electronic tag 240, and the RF signal sent by the network device 210 can trigger the electronic tag 240 to perform backscattering. Accordingly, the electronic tag 240 can collect energy from the RF signal sent by the network device 212 through RF energy harvesting, and modulate and reflect the RF signal sent by the network device 210 to transmit data.

[0049] With the continuous development of science and technology, the process and efficiency of RF energy harvesting have improved, but it still faces the following challenges:

[0050] 1) Due to the multipath propagation effect of electromagnetic waves, the uneven distribution of energy in space and time, and various interferences, the radio frequency energy density that can be collected in the wireless environment is extremely low (less than 10nW / cm 2 ), the RF energy that can be effectively collected needs to meet a certain input power.

[0051] 2) To drive logic circuits or computing units such as chips, the DC voltage converted from collected energy must meet minimum output voltage requirements and be converted into a stable DC voltage. Improving energy harvesting efficiency, especially ensuring that the collected energy can still drive the circuits under low input voltage conditions, is a key issue that needs to be addressed.

[0052] 3) How to properly manage the collected or stored energy and use it to drive the terminal. The efficiency of converting RF energy collection into direct current (DC) energy at low power is a challenge in the design of zero-power devices. Many experimental research results have shown that it is difficult to effectively collect and rectify RF signals with a general system input power (input power) below -30dBm into a usable DC voltage. The RF energy conversion efficiency varies under different input powers and energy harvesting circuit designs. For example, the energy conversion efficiency at a low input power of -20dBm is often less than 10%, and the conversion efficiency at an input power of around -1dBm is close to 50%. Based on the current process, in order to meet the power and backscatter communication requirements of the most basic low-power computing circuits, at least 10uW is required.

[0053] As can be seen from the above introduction, the energy collected by electronic tags is limited and they may not be able to actively initiate communication processes as routinely as ordinary UEs. Many current processes that require UEs to actively initiate (such as periodic location updates, service requests, etc.) may not be possible. Therefore, it is necessary to consider reducing the power consumption of electronic tags.

[0054] At the same time, with the development of communication technology, the types of terminal devices are increasing, and the power consumption of terminal devices has also received more and more attention.

[0055] To address one or more of the above technical issues, the present application proposes a communication method and a communication device. In an embodiment of the present application, a new communication mode is proposed, which, when a terminal device is in this communication mode, can reduce the power consumption of the terminal device. This communication mode is first introduced below.

[0056] The new communication mode proposed in this application may be a first mode. When the first device is in the first mode, at least one of the following conditions may be met:

[0057] Do not actively send information or initiate communication requests when in idle state or disconnected from the network;

[0058] sending information according to a trigger signal sent by the second device;

[0059] The first mode can be enabled within a preset time period.

[0060] The sending of information according to the trigger signal sent by the second device may be understood as: the first device sending the information when receiving the trigger signal sent by the second device.

[0061] Optionally, the communication request may include: a location update request, a service request, etc.

[0062] Optionally, when the first device is in the first mode, it can be powered by an ambient energy source (e.g., powered by an RF signal). Optionally, when the first device is in the first mode, it can send information (or messages) only when it receives a trigger signal, and does not need to actively send information (or messages) at other times.

[0063] The first mode may also be referred to as a network initiated communication (NICO) mode.

[0064] The following takes the AIoT device as an example and describes the first mode in combination with Figures 3 to 5.

[0065] As shown in Figure 3, the AIoT device can send a reply message to the RAN upon receiving a request message sent by the RAN; as shown in Figure 4, the AIoT device can send a reply message to the core network element upon receiving a request message sent by the core network element; as shown in Figure 4, the AIoT device can send a reply message to other UE upon receiving a request message sent by the UE.

[0066] Optionally, the request message is equivalent to a trigger signal, or the request message may carry a trigger signal.

[0067] Optionally, the request message can be used as an excitation signal to enable the AIoT device to turn on backscatter power supply so that the AIoT device can backscatter reply messages.

[0068] Optionally, the request message can be used to request the AIoT device to report some information, such as the identification information of the AIoT device, data measured or stored by the AIoT device, etc.

[0069] Optionally, the network node or UE can register or activate the AIoT device, and the network side can confirm that the AIoT device enters the first mode.

[0070] The embodiments of the present application are described in detail below with reference to FIG6 to FIG9 .

[0071] FIG6 is a schematic flow chart of a communication method according to an embodiment of the present application. The method 600 shown in FIG6 may include steps S610 and S620, which are as follows:

[0072] S610: A first device communicates with a second device in a first mode.

[0073] The first device may be a terminal device. Optionally, the terminal device may be an electronic tag, a reduced capability (RedCap) terminal, or an energy-saving terminal. The terminal device may also be other low-performance terminals or terminal devices that need to save power, which is not limited in this application.

[0074] The second device may be a core network element (such as an access and mobility management function (AMF)), an access network element (such as a RAN), or a terminal device (such as a UE).

[0075] In an embodiment of the present application, when the first device is in the first mode, at least one of the following is satisfied: not actively sending information or initiating a communication request when in an idle state or disconnected from the network, and sending information according to a trigger signal sent by the second device. That is, when the first device communicates with the second device in the first mode, it does not need to actively send information or communication requests, thereby helping to reduce the power consumption of the first device.

[0076] In some embodiments, before S610 , the first device may send first information to the second device, where the first information may be used to indicate that the first device needs to enter, has entered, or is about to enter the first mode.

[0077] Optionally, the first information may indicate at least one of the following: the first device has entered the first mode, the first device is about to enter the first mode, an identifier of the first device, and a capability of the first device corresponding to the first mode.

[0078] Optionally, the capability of the first device corresponding to the first mode may include whether the first device supports the first mode. The capability of the first device corresponding to the first mode may also include time information when the first device supports or is capable of enabling the first mode, and the time information may include: the moment, duration, and time period when the first device supports or is capable of enabling the first mode.

[0079] Optionally, the first information may explicitly indicate that the first device has entered the first mode. For example, the first information may indicate that the first device has entered or is about to enter the first mode.

[0080] Optionally, the first information may also implicitly indicate that the first device has entered the first mode. For example, the first information may indicate the identification of the first device and / or the capability of the first device corresponding to the first mode; accordingly, after receiving the first information, the second device may determine that the first device has entered or is about to enter the first mode based on the identification of the first device and / or the capability of the first device corresponding to the first mode.

[0081] Optionally, the first information may further include first time information, which may indicate the time when the first device enters the first mode. Optionally, the first time information may indicate the time when the first device has entered the first mode, or the time when the first device is about to enter the first mode.

[0082] The first time information may include at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

[0083] Optionally, the first information may be carried in a non-access stratum (NAS) message, an access stratum (AS) protocol message, a sidelink message, or other messages (such as messages based on other protocol stacks).

[0084] For example, when the second device is AMF, the first information can be carried in a NAS message; when the second device is RAN, the first information can be carried in a protocol message of the AS layer; when the second device is UE, the first information can be carried in a sidelink message.

[0085] It should be noted that when the second device is a RAN, the first device can interact with the RAN through protocol messages at the AS layer. The protocol messages at the AS layer here can be messages corresponding to a layer in an existing protocol stack, and the existing protocol stack may include: a radio resource control layer (RRC), a packet data convergence protocol layer (PDCP), a radio link control layer (RLC), a media access control layer (MAC), and a physical layer (PHY). For example, the protocol message at the AS layer can be an RRC message, a PDCP message, an RLC message, a MAC message, or a PHY message.

[0086] Alternatively, the protocol message of the AS layer may be a message corresponding to a certain layer in the protocol stack obtained by simplifying the existing protocol stack; or, it may be a message corresponding to a certain layer in a newly defined protocol stack; or, it may be a message corresponding to a newly added AS layer protocol in the existing protocol stack.

[0087] Alternatively, the first device may also interact with the RAN through other messages, which is not limited in the embodiments of the present application.

[0088] In some embodiments, the second device sends second information to the first device, where the second information may be confirmation information of the first information. Optionally, the second information may be used to confirm that the first device has entered the first mode.

[0089] The second information may also include confirmation information of the first time information. Optionally, the second information may be used to confirm the time information when the first device enters the first mode.

[0090] Similar to the first information, the second information may also be carried in a NAS message, an AS layer protocol message, a sidelink message, or other messages (such as messages based on other protocol stacks).

[0091] In some embodiments, before S610 , the first device may send third information to the second device, where the third information may be used to request to enter the first mode.

[0092] Optionally, the third information may include the capability of the first device corresponding to the first mode. Accordingly, after receiving the third information, the second device may determine that the first device requests to enter the first mode based on the capability of the first device corresponding to the first mode (included in the third information).

[0093] Optionally, the third information may further include second time information, where the second time information may indicate time information when the first device requests to enter the first mode.

[0094] The second time information may include at least one of the following: a time at which the entry into the first mode is requested, a time period during which the entry into the first mode is requested, and a duration for which the entry into the first mode is requested.

[0095] Similar to the first information, the third information may also be carried in a NAS message, an AS layer protocol message, a side link message, or other messages (such as messages based on other protocol stacks).

[0096] In some embodiments, the second device may interact with a third device (such as a contract information storage network element) to obtain the contract information of the first device. Optionally, the second device may be an AMF, and the third device may be a unified data management function (UDM). For example, the AMF may send a contract information request message to the UDM to request the contract information of the first device, and accordingly, the UDM may send the contract information of the first device to the AMF.

[0097] Optionally, the second device may determine whether to allow the first device to enter the first mode according to the subscription information of the first device.

[0098] Furthermore, the second device may also determine third time information based on the contract information, where the third time information may indicate the time when the first device enters the first mode. For example, the third time information may include at least one of the following: the time when the first mode is allowed to be entered, the time period during which the first mode is allowed to be entered, and the duration of the first mode allowed to be entered.

[0099] In some embodiments, the second device may interact with a third device to determine whether to allow the first device to enter the first mode. Optionally, the second device may be a RAN, and the third device may be an AMF. For example, the RAN may send fifth information to the AMF, which may indicate that the first device has requested to enter the first mode. In response, the AMF may send sixth information to the RAN, which may indicate whether to allow the first device to enter the first mode.

[0100] Optionally, similar to the above embodiment, the third device may obtain the contract information of the first device and determine whether to allow the first device to enter the first mode based on the contract information.

[0101] In some embodiments, the second device is a UE and the third device is an AMF. For example, the UE may send seventh information to the AMF, where the seventh information may indicate that the first device requests to enter the first mode. Accordingly, the AMF may send eighth information to the UE, where the eighth information may indicate whether the first device is allowed to enter the first mode. Optionally, the seventh and eighth information may be carried in a NAS message.

[0102] In some embodiments, the second device sends fourth information to the first device, and the fourth information may indicate whether the first device is allowed to enter the first mode.

[0103] Optionally, the fourth information may further include third time information, and the third time information may indicate time information for allowing the first device to enter the first mode.

[0104] The third time information may include at least one of the following: a time at which entry into the first mode is allowed, a time period during which entry into the first mode is allowed, and a duration for which entry into the first mode is allowed.

[0105] Similar to the first information, the fourth information may also be carried in a NAS message, an AS layer protocol message, a side link message, or other messages (such as messages based on other protocol stacks).

[0106] 7 , the above embodiment will be described below by taking the second device as an AMF as an example.

[0107] S710. The first device sends a request message to the AMF.

[0108] Optionally, the request information may be the third information mentioned above. The request information may be carried in a NAS message.

[0109] Optionally, the request information may include the capability of the first device corresponding to the first mode and may also include the second time information.

[0110] S720, AMF obtains the contract information of the first device through UDM.

[0111] Optionally, the AMF may interact with the contract information storage network element to obtain the contract information of the first device.

[0112] Optionally, the AMF may determine whether to allow the first device to enter the first mode based on the contract information. A new parameter may be added to the contract information. The new parameter may indicate whether the first device is allowed to enter the first mode and / or whether the first device supports the first mode. The new parameter may also indicate time information when the first device is allowed to enter the first mode, for example, the time at which entry into the first mode is allowed, the time period during which entry into the first mode is allowed, and / or the duration of entry into the first mode.

[0113] S730, AMF sends a reply message to the first device.

[0114] Optionally, the reply information may be the fourth information mentioned above. The reply information may be carried in a NAS message.

[0115] Optionally, the reply information may indicate whether the first device is allowed to enter the first mode. The reply information may also include third time information.

[0116] S740, the first device sends indication information to the AMF.

[0117] Optionally, the indication information may be the above-mentioned first information. The indication information may be carried in a NAS message.

[0118] Optionally, when the first device needs to enter, has entered, or is about to enter the first mode, the first device may send indication information to the AMF. The indication information may indicate that the first device needs to enter, has entered, or is about to enter the first mode. The indication information may also include first time information.

[0119] S750, AMF sends a confirmation message to the first device.

[0120] Optionally, the confirmation information may be the second information mentioned above. The confirmation information may be confirmation information of the indication information mentioned above.

[0121] Optionally, steps S740 and S750 may be performed separately, that is, the request process of steps S710 to S730 is not required, and the first device directly initiates the notification of starting the first mode.

[0122] Alternatively, step S740 can also be executed separately, that is, after the first device decides to turn on the first mode on its own, it only needs to send the indication information in step S740 to notify the core network element that it has turned on the first mode, without waiting to receive the confirmation message of step S750.

[0123] Optionally, the above step S720 can be performed after the AMF receives the request information sent by the first device in S710, or it can be performed before S710.

[0124] 8 , the above embodiment will be described below by taking the second device as a RAN as an example.

[0125] S810: The first device sends request information to the RAN.

[0126] Optionally, the request information may be the third information mentioned above. The request information may be carried in an RRC message.

[0127] Optionally, the request information may include the capability of the first device corresponding to the first mode and may also include second time information.

[0128] S820: The RAN determines, through the AMF, whether to allow the first device to enter the first mode.

[0129] The RAN may send fifth information to the AMF, where the fifth information may indicate that the first device requests to enter the first mode. Accordingly, the AMF may send sixth information to the RAN, where the sixth information may indicate whether the first device is allowed to enter the first mode.

[0130] Optionally, the AMF may interact with the contract information storage network element to obtain the contract information of the first device.

[0131] Optionally, the AMF may determine whether to allow the first device to enter the first mode based on the contract information. A new parameter may be added to the contract information. The new parameter may indicate whether the first device is allowed to enter the first mode and / or whether the first device supports the first mode. The new parameter may also indicate time information when the first device is allowed to enter the first mode, for example, the time at which entry into the first mode is allowed, the time period during which entry into the first mode is allowed, and / or the duration of entry into the first mode.

[0132] S830: The RAN sends a reply message to the first device.

[0133] Optionally, the reply information may be the fourth information mentioned above. The reply information may be carried in an RRC message.

[0134] Optionally, the reply information may indicate whether the first device is allowed to enter the first mode. The reply information may also include third time information.

[0135] S840: The first device sends instruction information to the RAN.

[0136] Optionally, the indication information may be the above-mentioned first information. The indication information may be carried in an RRC message.

[0137] Optionally, when the first device needs to enter, has entered, or is about to enter the first mode, the first device may send indication information to the AMF. The indication information may indicate that the first device needs to enter, has entered, or is about to enter the first mode. The indication information may also include first time information.

[0138] S850: The RAN sends a confirmation message to the first device.

[0139] Optionally, the confirmation information may be the second information mentioned above. The confirmation information may be confirmation information of the indication information mentioned above.

[0140] Optionally, steps S840 and S850 may be performed separately, that is, the request process of steps S810 to S830 is not required, and the first device directly initiates the notification of turning on the first mode.

[0141] Alternatively, step S840 can also be executed separately, that is, after the first device decides to turn on the first mode on its own, it only needs to send the indication information in step S840 to notify the core network element that it has turned on the first mode, without waiting to receive the confirmation message of step S850.

[0142] Optionally, the above step S820 may be performed after the RAN receives the request information sent by the first device in S810, or may be performed before S810.

[0143] It should be noted that, in each step of the above method 800, the first device and the RAN may also interact via other protocol messages (except RRC messages) of the AS layer, such as PDCP messages, RLC messages, MAC messages, or PHY messages.

[0144] The protocol message of the AS layer may be a message corresponding to a certain layer in the existing protocol stack; or, it may be a message corresponding to a certain layer in the protocol stack obtained by simplifying the existing protocol stack; or, it may be a message corresponding to a certain layer in a newly defined protocol stack; or, it may be a message corresponding to a newly added AS layer protocol in the existing protocol stack.

[0145] Alternatively, the first device may also interact with the RAN through other messages, which is not limited in the embodiments of the present application.

[0146] 9 , the above embodiment will be described below by taking the second device as a UE as an example.

[0147] S910: The first device sends request information to the UE.

[0148] Optionally, the request information may be the third information mentioned above. The request information may be carried in a sidelink message.

[0149] Optionally, the request information may include the capability of the first device corresponding to the first mode and may also include second time information.

[0150] S920. The UE determines, through the AMF, whether the first device is allowed to enter the first mode.

[0151] The UE may determine whether to allow the first device to enter the first mode based on an instruction from the network side (e.g., a core network element). For example, the UE may send seventh information to the AMF, where the seventh information may indicate that the first device requests to enter the first mode. Accordingly, the AMF may send eighth information to the UE, where the eighth information may indicate whether the first device is allowed to enter the first mode. Optionally, the seventh information or the eighth information may be carried in a NAS message.

[0152] Optionally, the AMF may interact with the contract information storage network element to obtain the contract information of the first device.

[0153] Optionally, the AMF may determine whether to allow the first device to enter the first mode based on the contract information. A new parameter may be added to the contract information. The new parameter may indicate whether the first device is allowed to enter the first mode and / or whether the first device supports the first mode. The new parameter may also indicate time information when the first device is allowed to enter the first mode, for example, the time at which entry into the first mode is allowed, the time period during which entry into the first mode is allowed, and / or the duration of entry into the first mode.

[0154] S930, the UE sends a reply message to the first device.

[0155] Optionally, the reply information may be the fourth information mentioned above. The reply information may be carried in a sidelink message.

[0156] Optionally, the reply information may indicate whether the first device is allowed to enter the first mode. The reply information may also include third time information.

[0157] S940: The first device sends indication information to the UE.

[0158] Optionally, the indication information may be the above-mentioned first information. The indication information may be carried in a sidelink message.

[0159] Optionally, when the first device needs to enter, has entered, or is about to enter the first mode, the first device may send indication information to the AMF. The indication information may indicate that the first device needs to enter, has entered, or is about to enter the first mode. The indication information may also include first time information.

[0160] S950, the UE sends confirmation information to the first device.

[0161] Optionally, the confirmation information may be the second information mentioned above. The confirmation information may be confirmation information of the indication information mentioned above.

[0162] The UE may obtain confirmation information through the network side (such as a core network element). For example, the UE may forward the indication information sent by the first device to the AMF. Accordingly, the AMF may send confirmation information of the indication information to the UE.

[0163] Optionally, steps S940 and S950 may be performed separately, that is, the request process of steps S910 to S930 is not required, and the first device directly initiates the notification of turning on the first mode.

[0164] Alternatively, step S940 can also be executed separately, that is, after the first device decides to turn on the first mode on its own, it only needs to send the indication information in step S940 to notify the core network element that it has turned on the first mode, without waiting to receive the confirmation message of step S950.

[0165] Optionally, the above step S920 may be performed after the UE receives the request information sent by the first device in S910, or may be performed before S910.

[0166] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 9 . The device embodiment of the present application is described in detail below in conjunction with Figures 10 to 12 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0167] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG10 , the device 1000 includes a communication unit 1010, which is specifically as follows:

[0168] The communication unit 1010 is used to communicate with the second device in the first mode. When the device is in the first mode, it satisfies at least one of the following conditions: it does not actively send information or initiate a communication request when in an idle state or disconnected from the network; and it sends information according to a trigger signal sent by the second device.

[0169] Optionally, before communicating with the second device in the first mode, the communication unit 1010 is also used to: send first information to the second device, the first information indicating at least one of the following: the device has entered the first mode, the device is about to enter the first mode, the identification of the device, and the capability of the device to correspond to the first mode.

[0170] Optionally, the first information further includes first time information, and the first time information indicates time information when the device enters the first mode.

[0171] Optionally, the first time information includes at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

[0172] Optionally, the communication unit 1010 is further configured to: receive second information sent by the second device, where the second information is used to confirm that the apparatus enters the first mode.

[0173] Optionally, the second information also includes confirmation information of the first time information.

[0174] Optionally, the communication unit 1010 is further configured to: send third information to the second device, where the third information is used to request entry into the first mode.

[0175] Optionally, the third information further includes second time information, where the second time information indicates time information when the device requests to enter the first mode.

[0176] Optionally, the second time information includes at least one of the following: a moment of requesting to enter the first mode, a time period of requesting to enter the first mode, and a duration of requesting to enter the first mode.

[0177] Optionally, the communication unit 1010 is further configured to: receive fourth information sent by the second device, where the fourth information indicates whether the apparatus is allowed to enter the first mode.

[0178] Optionally, the fourth information further includes third time information, where the third time information indicates time information for allowing the device to enter the first mode.

[0179] Optionally, the third time information includes at least one of the following: a time when entry into the first mode is allowed, a time period when entry into the first mode is allowed, and a duration when entry into the first mode is allowed.

[0180] Optionally, the first information is carried in a non-access layer NAS message, an access layer AS protocol message, or a sidelink message.

[0181] Optionally, the first information is carried in a radio resource control RRC message.

[0182] Optionally, the second device is an access and mobility management function AMF, a radio access network RAN ​​or a terminal device.

[0183] Optionally, the first mode can be enabled within a preset time period.

[0184] Optionally, the device is any one of the following: an electronic tag, a low-capability RedCap terminal, and an energy-saving terminal.

[0185] FIG11 is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device 1100 in FIG11 includes a communication unit 1110, which is specifically as follows:

[0186] The communication unit 1110 is used to communicate with a first device in a first mode, and the first device satisfies at least one of the following when in the first mode: when in an idle state or disconnected from the network, it does not actively send information or initiate a communication request; and sends information according to a trigger signal sent by the device.

[0187] Optionally, before communicating with a first device in a first mode, the communication unit 1110 is further used to: receive first information sent by the first device, the first information indicating at least one of the following: the first device has entered the first mode, the first device is about to enter the first mode, the identification of the first device, and the capability of the first device to correspond to the first mode.

[0188] Optionally, the first information further includes first time information, where the first time information indicates time information when the first device enters the first mode.

[0189] Optionally, the first time information includes at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

[0190] Optionally, the communication unit 1110 is further used to: send second information to the first device, where the second information is used to confirm that the first device enters the first mode.

[0191] Optionally, the second information also includes confirmation information of the first time information.

[0192] Optionally, the communication unit 1110 is further used to: receive third information sent by the first device, where the third information is used to request to enter the first mode.

[0193] Optionally, the third information further includes second time information, where the second time information indicates time information when the first device requests to enter the first mode.

[0194] Optionally, the second time information includes at least one of the following: a moment of requesting to enter the first mode, a time period of requesting to enter the first mode, and a duration of requesting to enter the first mode.

[0195] Optionally, the communication unit 1110 is further configured to: send fourth information to the first device, where the fourth information indicates whether the first device is allowed to enter the first mode.

[0196] Optionally, the fourth information further includes third time information, where the third time information indicates time information for allowing the first device to enter the first mode.

[0197] Optionally, the third time information includes at least one of the following: a time when entry into the first mode is allowed, a time period when entry into the first mode is allowed, and a duration when entry into the first mode is allowed.

[0198] Optionally, the first information is carried in a non-access layer NAS message, an access layer AS protocol message, or a sidelink message.

[0199] Optionally, the first information is carried in a radio resource control RRC message.

[0200] Optionally, the apparatus 1100 further includes a determining unit 1120, configured to determine, based on the subscription information of the first device, whether to allow the first device to enter the first mode.

[0201] Optionally, the apparatus 1100 further includes a determining unit 1120, configured to determine third time information according to the contract information of the first device, where the third time information represents time information for allowing the first device to enter the first mode.

[0202] Optionally, the contract information is obtained from a third device.

[0203] Optionally, the third device is a unified data management function UDM.

[0204] Optionally, the communication unit 1110 is further configured to send fifth information to a third device, where the fifth information indicates that the first device requests to enter the first mode.

[0205] Optionally, the communication unit 1110 is further configured to: receive sixth information sent by the third device, where the sixth information indicates whether the first device is allowed to enter the first mode.

[0206] Optionally, the third device is an access and mobility management function AMF.

[0207] Optionally, the communication unit 1110 is further configured to: send seventh information to a third device, where the seventh information indicates that the first device requests to enter the first mode.

[0208] Optionally, the communication unit 1110 is further configured to: receive eighth information sent by the third device, where the eighth information indicates whether the first device is allowed to enter the first mode.

[0209] Optionally, the third device is an access and mobility management function AMF.

[0210] Optionally, the device is an access and mobility management function AMF, a radio access network RAN ​​or a terminal device.

[0211] Optionally, the first mode can be enabled within a preset time period.

[0212] Optionally, the first device is any one of the following: an electronic tag, a low-capability RedCap terminal, and an energy-saving terminal.

[0213] FIG12 is a schematic block diagram of an apparatus according to an embodiment of the present application. The dashed lines in FIG12 indicate that the unit or module is optional. Apparatus 1200 may be used to implement the method described in the above method embodiment. Apparatus 1200 may be a chip or a communication device.

[0214] The device 1200 may include one or more processors 1210. The processor 1210 may support the device 1200 to implement the method described in the above method embodiment. The processor 1210 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0215] The apparatus 1200 may further include one or more memories 1220. The memories 1220 store programs that can be executed by the processor 1210, causing the processor 1210 to perform the methods described in the above method embodiments. The memories 1200 may be independent of the processor 1210 or integrated into the processor 1210.

[0216] The apparatus 1200 may further include a transceiver 1230. The processor 1210 may communicate with other devices or chips via the transceiver 1230. For example, the processor 1210 may transmit and receive data with other devices or chips via the transceiver 1230.

[0217] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0218] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0219] The embodiments of the present application also provide a computer program. The computer program can be applied to the communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the communication device in each embodiment of the present application.

[0220] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0221] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0222] 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.

[0223] In the several embodiments provided in this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0224] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0225] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0226] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0227] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: A first device communicates with a second device in a first mode, where at least one of the following conditions is met when the first device is in the first mode: Do not actively send information or initiate communication requests when in idle state or disconnected from the network; Information is sent according to the trigger signal sent by the second device.

2. The method according to claim 1, characterized in that Before the first device communicates with the second device in the first mode, the method further includes: The first device sends first information to the second device, where the first information indicates at least one of the following: The first device has entered the first mode, the first device is about to enter the first mode, an identifier of the first device, and a capability of the first device corresponding to the first mode.

3. The method according to claim 2, characterized in that The first information further includes first time information, where the first time information indicates time information when the first device enters the first mode.

4. The method according to claim 3, characterized in that The first time information includes at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

5. The method according to any one of claims 2 to 4, characterized in that The method further comprises: The first device receives second information sent by the second device, where the second information is used to confirm that the first device enters the first mode.

6. The method according to claim 5, characterized in that The second information also includes confirmation information of the first time information.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: The first device sends third information to the second device, where the third information is used to request to enter the first mode.

8. The method according to claim 7, characterized in that The third information further includes second time information, where the second time information indicates time information when the first device requests to enter the first mode.

9. The method according to claim 8, characterized in that The second time information includes at least one of the following: a time of requesting to enter the first mode, a time period of requesting to enter the first mode, and a duration of requesting to enter the first mode.

10. The method according to any one of claims 7 to 9, characterized in that The method further comprises: The first device receives fourth information sent by the second device, where the fourth information indicates whether the first device is allowed to enter the first mode.

11. The method according to claim 10, characterized in that The fourth information further includes third time information, where the third time information indicates time information for allowing the first device to enter the first mode.

12. The method according to claim 11, characterized in that The third time information includes at least one of the following: a time at which entry into the first mode is allowed, a time period during which entry into the first mode is allowed, and a duration for which entry into the first mode is allowed.

13. The method according to any one of claims 2 to 12, characterized in that The first information is carried in a non-access layer NAS message, an access layer AS protocol message or a sidelink message.

14. The method according to claim 13, characterized in that The first information is carried in a radio resource control RRC message.

15. The method according to any one of claims 1 to 14, characterized in that The second device is an access and mobility management function AMF, a radio access network RAN ​​or a terminal device.

16. The method according to any one of claims 1 to 15, characterized in that The first mode can be enabled within a preset time period.

17. The method according to any one of claims 1 to 16, characterized in that The first device is any one of the following: an electronic tag, a low-capability RedCap terminal, and an energy-saving terminal.

18. A communication method, characterized in that: include: The second device communicates with the first device in the first mode, where the first device in the first mode satisfies at least one of the following conditions: Do not actively send information or initiate communication requests when in idle state or disconnected from the network; Information is sent according to the trigger signal sent by the second device.

19. The method according to claim 18, characterized in that Before the second device communicates with the first device in the first mode, the method further includes: The second device receives first information sent by the first device, where the first information indicates at least one of the following: The first device has entered the first mode, the first device is about to enter the first mode, an identifier of the first device, and a capability of the first device corresponding to the first mode.

20. The method according to claim 19, characterized in that The first information further includes first time information, where the first time information indicates time information when the first device enters the first mode.

21. The method according to claim 20, characterized in that The first time information includes at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

22. The method according to any one of claims 19 to 21, characterized in that The method further comprises: The second device sends second information to the first device, where the second information is used to confirm that the first device enters the first mode.

23. The method according to claim 22, characterized in that The second information also includes confirmation information of the first time information.

24. The method according to any one of claims 18 to 23, characterized in that The method further comprises: The second device receives third information sent by the first device, where the third information is used to request to enter the first mode.

25. The method according to claim 24, characterized in that The third information further includes second time information, where the second time information indicates time information when the first device requests to enter the first mode.

26. The method according to claim 25, characterized in that The second time information includes at least one of the following: a time of requesting to enter the first mode, a time period of requesting to enter the first mode, and a duration of requesting to enter the first mode.

27. The method according to any one of claims 24 to 26, characterized in that The method further comprises: The second device sends fourth information to the first device, where the fourth information indicates whether the first device is allowed to enter the first mode.

28. The method according to claim 27, characterized in that The fourth information further includes third time information, where the third time information indicates time information for allowing the first device to enter the first mode.

29. The method according to claim 28, characterized in that The third time information includes at least one of the following: a time at which entry into the first mode is allowed, a time period during which entry into the first mode is allowed, and a duration for which entry into the first mode is allowed.

30. The method according to any one of claims 19 to 29, characterized in that The first information is carried in a non-access layer NAS message, an access layer AS protocol message or a sidelink message.

31. The method according to claim 30, wherein The first information is carried in a radio resource control RRC message.

32. The method according to any one of claims 19 to 30, characterized in that The method further comprises: The second device determines, according to the contract information of the first device, that the first device is allowed to enter the first mode.

33. The method according to claim 32, characterized in that The method further comprises: The second device determines third time information according to the contract information of the first device, where the third time information indicates time information for allowing the first device to enter the first mode.

34. The method according to claim 32 or 33, characterized in that The contract information is obtained from a third device.

35. The method according to claim 34, wherein The third device is a unified data management function UDM.

36. The method according to any one of claims 19 to 31, characterized in that The method further comprises: The second device sends fifth information to the third device, where the fifth information indicates that the first device requests to enter the first mode.

37. The method according to claim 36, wherein The method further comprises: The second device receives sixth information sent by the third device, where the sixth information indicates whether the first device is allowed to enter the first mode.

38. The method according to claim 36 or 37, characterized in that The third device is the access and mobility management function AMF.

39. The method according to any one of claims 19 to 30, characterized in that The method further comprises: The second device sends seventh information to the third device, where the seventh information indicates that the first device requests to enter the first mode.

40. The method according to claim 39, wherein The method further comprises: The second device receives eighth information sent by the third device, where the eighth information indicates whether the first device is allowed to enter the first mode.

41. The method according to claim 39 or 40, characterized in that The third device is the access and mobility management function AMF.

42. The method according to any one of claims 18 to 41, characterized in that The second device is an access and mobility management function AMF, a radio access network RAN ​​or a terminal device.

43. The method according to any one of claims 18 to 42, characterized in that The first mode can be enabled within a preset time period.

44. The method according to any one of claims 18 to 43, characterized in that The first device is any one of the following: an electronic tag, a low-capability RedCap terminal, and an energy-saving terminal.

45. A communication device, characterized in that include: a communication unit, configured to communicate with a second device in a first mode, wherein the apparatus satisfies at least one of the following conditions when in the first mode: Do not actively send information or initiate communication requests when in idle state or disconnected from the network; Information is sent according to the trigger signal sent by the second device.

46. ​​The device according to claim 45, characterized in that Before communicating with the second device in the first mode, the communication unit is further configured to: send first information to the second device, where the first information indicates at least one of the following: The device has entered the first mode, the device is about to enter the first mode, the identifier of the device, and the capability of the device corresponding to the first mode.

47. The device according to claim 46, characterized in that The first information further includes first time information, where the first time information indicates time information when the device enters the first mode.

48. The device according to claim 47, characterized in that The first time information includes at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

49. The device according to any one of claims 46 to 48, characterized in that The communication unit is further configured to receive second information sent by the second device, where the second information is used to confirm that the apparatus enters the first mode.

50. The device according to claim 49, characterized in that The second information also includes confirmation information of the first time information.

51. The device according to any one of claims 45 to 50, characterized in that The communication unit is further configured to send third information to the second device, where the third information is used to request entry into the first mode.

52. The device according to claim 51, characterized in that The third information further includes second time information, where the second time information indicates time information when the device requests to enter the first mode.

53. The device according to claim 52, characterized in that The second time information includes at least one of the following: a time of requesting to enter the first mode, a time period of requesting to enter the first mode, and a duration of requesting to enter the first mode.

54. The device according to any one of claims 51 to 53, characterized in that The communication unit is further configured to receive fourth information sent by the second device, where the fourth information indicates whether the apparatus is allowed to enter the first mode.

55. The device according to claim 54, characterized in that The fourth information further includes third time information, and the third time information indicates time information for allowing the device to enter the first mode.

56. The device according to claim 55, characterized in that The third time information includes at least one of the following: a time at which entry into the first mode is allowed, a time period during which entry into the first mode is allowed, and a duration for which entry into the first mode is allowed.

57. The device according to any one of claims 46 to 56, characterized in that The first information is carried in a non-access layer NAS message, an access layer AS protocol message or a sidelink message.

58. The device according to claim 57, characterized in that The first information is carried in a radio resource control RRC message.

59. The device according to any one of claims 45 to 58, characterized in that The second device is an access and mobility management function AMF, a radio access network RAN ​​or a terminal device.

60. The device according to any one of claims 45 to 59, characterized in that The first mode can be enabled within a preset time period.

61. The device according to any one of claims 45 to 60, characterized in that The device is any one of the following: an electronic tag, a low-capability RedCap terminal, and an energy-saving terminal.

62. A communication device, characterized in that include: a communication unit, configured to communicate with a first device in a first mode, where the first device satisfies at least one of the following conditions when in the first mode: Do not actively send information or initiate communication requests when in idle state or disconnected from the network; Information is sent according to a trigger signal sent by the device.

63. The device according to claim 62, characterized in that Before communicating with the first device in the first mode, the communication unit is further configured to: receive first information sent by the first device, where the first information indicates at least one of the following: The first device has entered the first mode, the first device is about to enter the first mode, an identifier of the first device, and a capability of the first device corresponding to the first mode.

64. The device according to claim 63, characterized in that The first information further includes first time information, where the first time information indicates time information when the first device enters the first mode.

65. The device according to claim 64, characterized in that The first time information includes at least one of the following: a moment of entering the first mode, a time period of entering the first mode, and a duration of entering the first mode.

66. The device according to any one of claims 63 to 65, characterized in that The communication unit is further configured to send second information to the first device, where the second information is used to confirm that the first device enters the first mode.

67. The device according to claim 66, characterized in that The second information also includes confirmation information of the first time information.

68. The device according to any one of claims 62 to 67, characterized in that The communication unit is further configured to receive third information sent by the first device, where the third information is used to request entry into the first mode.

69. The device according to claim 68, characterized in that The third information further includes second time information, where the second time information indicates time information when the first device requests to enter the first mode.

70. The device according to claim 69, characterized in that The second time information includes at least one of the following: a time of requesting to enter the first mode, a time period of requesting to enter the first mode, and a duration of requesting to enter the first mode.

71. The device according to any one of claims 68 to 70, characterized in that The communication unit is further configured to send fourth information to the first device, where the fourth information indicates whether the first device is allowed to enter the first mode.

72. The device according to claim 71, characterized in that The fourth information further includes third time information, where the third time information indicates time information for allowing the first device to enter the first mode.

73. The device according to claim 72, characterized in that The third time information includes at least one of the following: a time at which entry into the first mode is allowed, a time period during which entry into the first mode is allowed, and a duration for which entry into the first mode is allowed.

74. The device according to any one of claims 63 to 73, characterized in that The first information is carried in a non-access layer NAS message, an access layer AS protocol message or a sidelink message.

75. The device according to claim 74, characterized in that The first information is carried in a radio resource control RRC message.

76. The device according to any one of claims 63 to 74, characterized in that The apparatus further includes a determining unit configured to determine, based on the subscription information of the first device, whether to allow the first device to enter the first mode.

77. The device according to claim 76, characterized in that The apparatus further includes a determining unit configured to determine third time information according to the subscription information of the first device, where the third time information indicates time information for allowing the first device to enter the first mode.

78. The device according to claim 76 or 77, characterized in that The contract information is obtained from a third device.

79. The device according to claim 78, characterized in that The third device is a unified data management function UDM.

80. The device according to any one of claims 63 to 75, characterized in that The communication unit is further configured to send fifth information to a third device, where the fifth information indicates that the first device requests to enter the first mode.

81. The device according to claim 80, characterized in that The communication unit is further configured to receive sixth information sent by the third device, where the sixth information indicates whether the first device is allowed to enter the first mode.

82. The device according to claim 80 or 81, characterized in that The third device is the access and mobility management function AMF.

83. The device according to any one of claims 63 to 74, characterized in that The communication unit is further configured to send seventh information to a third device, where the seventh information indicates that the first device requests to enter the first mode.

84. The device according to claim 83, characterized in that The communication unit is further configured to receive eighth information sent by the third device, where the eighth information indicates whether the first device is allowed to enter the first mode.

85. The device according to claim 83 or 84, characterized in that The third device is the access and mobility management function AMF.

86. The device according to any one of claims 62 to 85, characterized in that The device is an access and mobility management function AMF, a radio access network RAN ​​or a terminal device.

87. The device according to any one of claims 62 to 86, characterized in that The first mode can be enabled within a preset time period.

88. The device according to any one of claims 62 to 87, characterized in that The first device is any one of the following: an electronic tag, a low-capability RedCap terminal, and an energy-saving terminal.

89. A communication device, characterized in that The communication device comprises a memory, a transceiver and a processor, wherein the memory is used to store a program, the processor transmits and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method according to any one of claims 1 to 17.

90. A communication device, characterized in that It includes a memory, a transceiver and a processor, the memory is used to store programs, the processor sends and receives data through the transceiver, and the processor is used to call the program in the memory so that the communication device executes the method as described in any one of claims 18 to 44.

91. A chip, characterized in that The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 17.

92. A chip, characterized in that: The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 18 to 44.

93. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 17.

94. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 18 to 44.

95. A computer program product, characterized in that The method comprises a program for causing a computer to execute the method according to any one of claims 1 to 17.

96. A computer program product, characterized in that A program is included, the program causing a computer to execute the method according to any one of claims 18 to 44.

97. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 17.

98. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 18 to 44.

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