Communication method and device

Abstract

The invention relates to a communication method and equipment. The method comprises the following steps: a first device receives first service information sent by a second device; the second equipment is one of one or more authorized first-class equipment; and the first device sends the first service information to a network device through the session of the first service.

Description

Communication method and device Technical Field

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

[0002] Zero-power communication networks are a wireless communication technology suitable for short-distance, low-speed communications. Zero-power devices can convert external energy into electrical energy to power their own operations. 5G systems are seeing a growing demand for supporting zero-power devices in network access. The challenge is to better adapt the characteristics of zero-power terminals, such as passive zero-power terminals, to enable them to communicate with the network.

[0003] Summary of the Invention

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

[0005] An embodiment of the present application provides a communication method, including:

[0006] The first device receives first service information sent by the second device; the second device is one of one or more authorized first-category devices;

[0007] The first device sends the first service information to the network device through a first service session.

[0008] An embodiment of the present application provides a communication method, including:

[0009] The network device receives first service information sent by a second device from the first device through a first service session; wherein the second device is one of one or more authorized first-category devices.

[0010] An embodiment of the present application provides a communication method, including:

[0011] The second device sends first service information to the first device; the first service information is sent by the first device to the network device through the first service session; the second device is one of one or more authorized first-category devices.

[0012] An embodiment of the present application provides a first device, including:

[0013] The first communication unit is configured to receive first service information sent by a second device; and send the first service information to a network device through a first service session; the second device is one of one or more authorized first-category devices.

[0014] An embodiment of the present application provides a network device, including:

[0015] The second communication unit is configured to receive first service information sent by a second device from the first device through a first service session; wherein the second device is one of one or more authorized first category devices.

[0016] An embodiment of the present application provides a second device, including:

[0017] The third communication unit is used to send first service information to the first device; the first service information is sent by the first device to the network device through the first service session; the second device is one of one or more authorized first-category devices.

[0018] An embodiment of the present application provides a first device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory, so that the first device executes the above-mentioned communication method.

[0019] An embodiment of the present application provides a network device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the above-mentioned communication method.

[0020] An embodiment of the present application provides a second device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the second device executes the above-mentioned communication method.

[0021] An embodiment of the present application provides a chip for implementing the above-mentioned communication method.

[0022] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned communication method.

[0023] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, which, when executed by a device, enables the device to execute the above-mentioned communication method.

[0024] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned communication method.

[0025] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned communication method.

[0026] An embodiment of the present application provides a communication system, including:

[0027] A first device, configured to execute the above communication method;

[0028] A network device, configured to execute the above communication method;

[0029] The second device is configured to execute the above communication method.

[0030] In this embodiment of the present application, the first device transmits the first service information sent by the second device to the network device via the first service session. This allows for a communication mechanism that transmits the service information of the second device to the network via an intermediate device, thereby avoiding the problem of requiring the second device to communicate directly with the network, which would result in excessive power consumption requirements for the second device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic diagram of an application scenario according to an embodiment of the present application.

[0032] FIG2 is a schematic diagram of a zero-power communication system.

[0033] FIG3 is a schematic diagram of an exemplary 5G network system architecture.

[0034] FIG4 is a schematic flowchart of a communication method according to an embodiment of the present application.

[0035] FIG5 is a schematic flowchart of a communication method according to another embodiment of the present application.

[0036] FIG6 is a schematic flowchart of a communication method according to yet another embodiment of the present application.

[0037] FIG7 is a schematic diagram of a protocol stack of a PC5 interface according to an embodiment of the present application.

[0038] FIG8 is an exemplary flowchart of a communication method according to an embodiment of the present application.

[0039] FIG9 is a schematic block diagram of a first device according to an embodiment of the present application.

[0040] FIG10 is a schematic block diagram of a network device according to an embodiment of the present application.

[0041] FIG11 is a schematic block diagram of a second device according to an embodiment of the present application.

[0042] FIG12 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0043] FIG13 is a schematic block diagram of a chip according to an embodiment of the present application.

[0044] FIG14 is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0046] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0047] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0048] In one embodiment, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0049] In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0050] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0051] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0052] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0053] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0054] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0055] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0056] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0057] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0058] FIG1 exemplarily illustrates a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and each network device 110 may include a different number of terminal devices 120 within its coverage area, which is not limited in this embodiment of the present application.

[0059] In one embodiment, the communication system 100 may further include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF), which is not limited in this embodiment of the present application.

[0060] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment can be an evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), pico base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc. in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0061] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system shown in Figure 1 as an example, the communication device may include a network device and a terminal device having a communication function. The network device and the terminal device may be specific devices in the embodiments of the present application and will not be described in detail here. The communication device may also include other devices in the communication system, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0062] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association 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 " / " generally indicates that the related objects are in an "or" relationship.

[0063] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0064] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0065] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0066] As shown in Figure 2, zero-power devices primarily combine RF energy harvesting, backscattering, and low-power computing technologies to achieve the advantage of eliminating the need for a power supply. Energy harvesting in zero-power devices, also known as RF energy harvesting, primarily involves converting RF energy into DC. This energy can be stored in batteries or capacitors, or directly used to drive logic circuits, digital chips, or sensors, completing functions and applications such as modulation and transmission of backscattered signals and collection and processing of sensor information.

[0067] With the development of 5G systems, 3GPP standards have introduced requirements for 5G systems to support zero-power terminal access. These requirements primarily target scenarios with the following characteristics: extreme environments unsuitable for standard terminals; extremely low-power and low-cost terminals; and battery-free terminals. For example, zero-power communication systems can be used in wireless industrial sensor networks, smart agriculture, smart warehousing and logistics, and smart homes.

[0068] FIG3 exemplarily shows a 5G network system architecture. In 5GC (5G core network), each node can be called a network function (NF), where the names and functions of each NF include: NSSF (Network Slice Selection Function) is mainly used to manage network slice related information, such as selecting network slices for terminal devices; AUSF (Authentication Server Function) is used to complete the identity authentication function of user access; UDM (Unified Data Management) is used to manage and store contract data and authentication data; AMF (Access and Mobility Management Function) is used to complete mobility management, security anchor and security context management, etc.; SMF (Session Management Function) is used to complete session management, UE IP address allocation and management, etc.; PCF (Policy Control Function) is used to support a unified policy framework and provide policy rules; AF (Application Function) is used for external application servers; UPF (User Plane Function) is used for complex user plane processing, such as forwarding traffic between the wireless access network and the Internet, reporting traffic usage, QoS (Quality of DN (Data Network) refers to the 5GC external data network (such as the Internet).

[0069] In addition, data is transmitted between various nodes of the 5G core network (5G core network), between user equipment (UE) and 5G core nodes, between the UE and the radio access network (RAN), and between the RAN and 5G core nodes through corresponding interfaces. For example, as shown in Figure 3: data is transmitted between the AMF and NSSF in the 5G core network via interface N22; data is transmitted between the AMF and SMF via interface N11; data is transmitted between the AMF and AUSF via interface N12; data is transmitted between the AMF and UDM via interface N8; data is transmitted between the SMF and UPF via interface N4; data is transmitted between the UPF and RAN via interface N3; data is transmitted between the UPF and the data network via interface N6, and so on; data is also transmitted between the UE and AMF via interface N1; data is transmitted between the UE and RAN via interface Uu; data is transmitted between the RAN and AMF via interface N2; and data is transmitted between the RAN and UPF via interface N3. It should be understood that the above description only describes the interfaces between some nodes, and the other interfaces between other 5G core nodes in Figure 3 are not detailed one by one.

[0070] Based on the energy source and usage of zero-power terminals, zero-power terminals can be divided into the following types:

[0071] 1. Passive zero-power terminal

[0072] Zero-power terminals do not require internal batteries. When they approach network devices (such as the reader / writer of an RFID (Radio Frequency Identification) system), they are within the near-field radiation generated by the network device's antenna. Consequently, the zero-power terminal's antenna generates an induced current through electromagnetic induction, which drives the low-power chip circuits in the zero-power terminal. This enables forward link signal demodulation and backward link signal modulation. For backscatter links, the zero-power terminal uses backscattering to transmit signals.

[0073] It can be seen that the passive zero-power terminal does not require a built-in battery to drive either the forward link or the reverse link, and is a true zero-power terminal.

[0074] Passive zero-power terminals do not require batteries, and their RF and baseband circuits are very simple. For example, they do not require components such as LNA (Low Noise Amplifier), PA (Power Amplifier), crystal oscillator, and ADC (Analog-to-Digital Conversion). Therefore, they have many advantages such as small size, light weight, very low price, and long service life.

[0075] Other features of this type of terminal device include: 1) no battery; 2) obtaining energy from the surrounding environment (such as radio waves, solar energy, wind energy, mechanical kinetic energy, etc.); and 3) no USIM card. This type of terminal device can also store a certain amount of energy from the surrounding environment, but the energy is generally very low, so the functional logic supported is much less than that of ordinary mobile phone terminals.

[0076] 2. Semi-passive zero-power terminal

[0077] Semi-passive zero-power terminals do not have conventional batteries themselves, but instead use RF (Radio Frequency) energy harvesting modules to harvest radio wave energy and store it in an energy storage unit (such as a capacitor). This energy storage unit then drives the low-power chip circuitry of the zero-power terminal, performing tasks such as demodulating forward link signals and modulating backward link signals. For backscatter links, the zero-power terminal uses backscattering to transmit signals.

[0078] As can be seen, the semi-passive zero-power terminal does not require an internal battery to operate in either the forward or reverse link. Although it uses energy stored in capacitors, the energy comes from radio energy collected by the energy harvesting module, making it a truly zero-power terminal.

[0079] Semi-passive zero-power consumption terminals inherit many advantages of passive zero-power consumption terminals, and have many advantages such as small size, light weight, very low price, and long service life.

[0080] 3. Active zero-power terminal

[0081] In some scenarios, zero-power terminals can also be active zero-power terminals, which can have built-in batteries. The batteries power the low-power chip circuits in the zero-power terminal, which perform tasks such as demodulating forward link signals and modulating reverse link signals. However, for backscatter links, zero-power terminals use backscattering to transmit signals. Therefore, the zero-power nature of these terminals lies primarily in the fact that reverse link signal transmission does not require the terminal's own power, but rather utilizes backscattering.

[0082] Active zero-power terminals use a built-in battery to power the RFID chip, increasing the tag's read and write distance and improving communication reliability. Therefore, they are suitable for scenarios with relatively high requirements for communication distance and read latency.

[0083] Given the extremely low complexity of zero-power terminals, such as passive zero-power terminals, they may not be able to support complex protocol stacks and complex communication processes. Therefore, how to better adapt to the characteristics of zero-power terminals, such as passive zero-power terminals, and enable zero-power terminals to communicate with the network becomes a problem that needs to be solved.

[0084] FIG4 is a schematic flow chart of a communication method 400 according to an embodiment of the present application. The method may optionally be applied to the system shown in FIG1 , but is not limited thereto. The method includes at least part of the following contents:

[0085] S410. A first device receives first service information sent by a second device; the second device is one of one or more authorized first-category devices;

[0086] S420: The first device sends the first service information to a network device through a first service session.

[0087] FIG5 is a schematic flow chart of a communication method 500 according to an embodiment of the present application. The method may optionally be applied to the system shown in FIG1 , but is not limited thereto. The method includes at least part of the following contents:

[0088] S510. A network device receives first service information sent by a second device from a first device through a first service session; wherein the second device is one of one or more authorized first-category devices.

[0089] FIG6 is a schematic flow chart of a communication method 600 according to an embodiment of the present application. The method may optionally be applied to the system shown in FIG1 , but is not limited thereto. The method includes at least part of the following contents:

[0090] S610. The second device sends first service information to the first device. The first service information is sent by the first device to the network device through a first service session. The second device is one of one or more authorized first-category devices.

[0091] In one embodiment, the first device is a terminal device, for example, a CPE (Customer Premise(s) Equipment), a smart phone, etc., and all possible terminal types are not enumerated here.

[0092] The first-category device is a zero-power terminal. For example, the aforementioned passive zero-power terminal, semi-passive zero-power terminal, active zero-power terminal, etc. The one or more authorized first-category devices may refer to one or more authorized zero-power terminals. The second device may be any one of the one or more authorized first-category devices.

[0093] The first service is any one of one or more services; any one of the one or more services may be a zero-power service, that is, the first service may be any one of the one or more zero-power services.

[0094] The first service information may refer to information about the first service collected by the second device. The first service session may be a protocol data unit (PDU) session of the first service.

[0095] The aforementioned network device may be a first network device, specifically a first core network device. The first core network device may be one of one or more NFs in the core network. The one or more NFs in the core network are the same as those shown in FIG. 3 and are not described in detail here. Exemplarily, the first core network device may be any PCF or any AF in the one or more NFs, which are not exhaustive here.

[0096] The first configuration information may be pre-stored in the first device, and the first configuration information includes at least one of the following information: authorization information, relevant configuration information corresponding to the relay transmission service, a first address mapping relationship, and a password mapping relationship.

[0097] The first configuration information is pre-configured in the first device, for example, it may be pre-stored in the first device before (or after) the first device leaves the factory. Alternatively, the first configuration information is configured on a network device, where the network device may specifically be a second network device; the second network device may be the same as or different from the first network device. For example, the second network device may be a second core network device, such as a PCF, AF, etc.; or the second network device may be an access network device, which is not limited in this embodiment.

[0098] The authorization information includes: an indication of whether the first device is used for relay transmission. And / or, the authorization information may further include: an identifier of a service that the first device is capable of relaying transmission.

[0099] The indication of whether the first device is used for relay transmission refers to an indication of whether the first type of device can be used to relay and transmit service information for zero-power communication. For example, if the indication of whether the first device is used for relay transmission is 1, it indicates that the first device is authorized for relay transmission; if the indication of whether the first device is used for relay transmission is 0, it indicates that the first device is not authorized for relay transmission. It should be understood that the above is only an exemplary description and does not mean that the indication of whether the first device is used for relay transmission can only be in the above manner. This is just not an exhaustive list in this embodiment.

[0100] The number of services that the first device can relay and transmit may be one or more, that is, the authorization information may include an identifier of each of the one or more services that the first device can relay and transmit.

[0101] Exemplarily, the authorization information may only include an indication of whether the first device is used for relay transmission. If the indication of whether the first device is used for relay transmission indicates that the first device is used for relay transmission, the first device may relay all zero-power communication service information. If the indication of whether the first device is used for relay transmission indicates that the first device is not used for relay transmission, the first device does not perform relay transmission and may not perform other subsequent processing.

[0102] Exemplarily, the authorization information may only include identifiers of services that the first device can relay and transmit. In this case, as long as the identifiers of services that the first device can relay and transmit contained in the authorization information are not zero, it is assumed that the first device can be used for relay transmission, and one or more services that the first device can relay and transmit can be further determined.

[0103] Exemplarily, the authorization information may include an indication of whether the first device is used for relay transmission; and when the indication of whether the first device is used for relay transmission indicates that the first device is used for relay transmission, the authorization information may also include: the ID (Identity) of one or more services that the first device can relay transmission.

[0104] The relevant configuration information corresponding to the above-mentioned relay-transmitted service may include at least one of the following: the service area of ​​the relay-transmitted service, the identifier of the first category of equipment corresponding to the relay-transmitted service, the identifier of the service group to which the relay-transmitted service belongs, the type of information that needs to be detected for the relay-transmitted service, and the session parameters corresponding to the relay-transmitted service.

[0105] As mentioned above, the number of services that the first device can relay and transmit can be one or more. Therefore, the relevant configuration information corresponding to the aforementioned relay-transmitted services refers to the relevant configuration information corresponding to each relay-transmitted service in one or more relay-transmitted services.

[0106] The service area of ​​the relay-transmitted service may be represented by a cell identifier or a geographical location, which is not limited here. It should be understood that different relay-transmitted services correspond to different service areas.

[0107] The identifier of the first-class device corresponding to the service that is relayed may refer to the identifier of one or more first-class devices capable of relaying transmission corresponding to the service that the first device is capable of relaying transmission. For example, the service that the first device is capable of relaying transmission is service 1, and there are 10 first-class devices corresponding to service 1. However, the first-class devices that the first device is capable of relaying transmission to may be all 10 first-class devices, or may be part of them, such as 5 of the first-class devices. In this embodiment, the identifiers of the first-class devices capable of relaying transmission under the service that the first device is capable of relaying transmission may be pre-configured. It should be understood that the identifiers of different relayed services are different, and the first-class devices corresponding to different relayed services are also different. For example, the relevant configuration corresponding to the relayed service 1 may include: the identifier 001 of service 1 and its corresponding identifier b1 of the first-class device, the identifier b2 of the first-class device, and so on; the relevant configuration corresponding to the relayed service 2 may include: the identifier 010 of service 2 and the corresponding identifier b3 of the first-class device.

[0108] The identifier of the service group to which the relay-transmitted service belongs may be that different relay-transmitted services have the same service group identifier, or different relay-transmitted services may have different service group identifiers; however, the identifiers of the relay-transmitted services corresponding to different service group identifiers are different. For example, the relevant configuration corresponding to relay-transmitted service 1 may include: a correspondence between identifier 001 of service 1 and identifier a1 of its service group; the relevant configuration corresponding to service 2 may include: a correspondence between identifier 010 of service 2 and identifier a1 of its service group; and the relevant configuration corresponding to service 3 may include: a correspondence between identifier 011 of service 3 and identifier a2 of its service group.

[0109] The information type that needs to be detected for the relay transmission service may include: at least one of temperature data, humidity data, time data, etc., and all possible information types are not exhaustively listed here.

[0110] The session parameters corresponding to the relay-transmitted service may specifically be PDU session parameters corresponding to the relay-transmitted service. More specifically, the PDU session parameters corresponding to the relay-transmitted service may include at least one of the following: a data network name (DNN, Data Network Name) corresponding to the relay-transmitted service, and single-network slice selection assistance information (S-NSSAI, Single-Network Slice Selection Assistance Information) corresponding to the relay-transmitted service.

[0111] The first address mapping relationship may include: a mapping relationship between each identifier-related information and a layer 2 (L2) identifier in one or more identifier-related information configured by the first device. It should be understood that different identifier-related information corresponds to different L2 identifiers.

[0112] The identification-related information includes one of the following: an identification of a service, an identification of a service group, an identification of a first-category device. The one or more identification-related information includes at least one of the following: an identification of a service, an identification of a service group, an identification of a first-category device.

[0113] Specifically, the first address mapping relationship may include at least one of the following:

[0114] Among the identifiers of one or more services configured on the first device, a mapping relationship between an identifier of each service and an L2 identifier; wherein different identifiers of different services correspond to different L2 identifiers;

[0115] A mapping relationship between an identifier of each service group and an L2 identifier in one or more service group identifiers configured on the first device; wherein different service group identifiers correspond to different L2 identifiers, and different service group identifiers correspond to different service identifiers, and any service group includes one or more services;

[0116] Among the identifiers of one or more first-category devices configured in the first device, a mapping relationship between the identifier of each first-category device and the L2 identifier; wherein different identifiers of the first-category devices correspond to different L2 identifiers.

[0117] The first address mapping relationship may be configured as any one, any two, or all of the above-mentioned first address mapping relationships according to actual circumstances. In one example, the first address mapping relationship may include at least one mapping relationship between the identifier of each service and the L2 identifier of one or more services configured by the first device.

[0118] The password mapping relationship may include: a mapping relationship between each identifier-related information and a password in one or more identifier-related information configured by the first device. The definition of the identifier-related information is the same as in the previous embodiment and is not repeated here. It should be understood that different identifier-related information corresponds to different passwords.

[0119] The password mapping relationship may include at least one of the following:

[0120] Among the one or more service identifiers configured on the first device, a mapping relationship between each service identifier and a password; wherein different service identifiers correspond to different passwords;

[0121] A mapping relationship between the identifier of each service group and a password in the identifiers of one or more service groups configured on the first device; wherein different service group identifiers correspond to different passwords, and different service groups include different services, and any service group includes one or more services;

[0122] Among the one or more first-category device identifiers configured by the first device, a mapping relationship between each first-category device identifier and a password; wherein different first-category device identifiers correspond to different passwords.

[0123] In the second device, second configuration information is pre-stored; the second configuration information may at least include an address mapping relationship.

[0124] The second address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information corresponding to the second device. The identifier-related information may include content similar to that in the above embodiment and will not be repeated here.

[0125] Specifically, the second address mapping relationship may include at least one of the following:

[0126] Among the one or more service identifiers configured on the second device, a mapping relationship between each service identifier and an L2 identifier; wherein different service identifiers correspond to different L2 identifiers;

[0127] A mapping relationship between the identifier of each service group and the L2 identifier in the identifier of one or more service groups configured on the second device; wherein different service group identifiers correspond to different L2 identifiers, and different service group identifiers correspond to different service identifiers, and any service group includes one or more services;

[0128] Among the identifiers of one or more first-category devices configured on the second device, a mapping relationship between the identifier of each first-category device and the L2 identifier; wherein different identifiers of the first-category devices correspond to different L2 identifiers.

[0129] In one example, the second address mapping relationship may be identical to the first address mapping relationship, that is, one or more identifier-related information corresponding to the first device is identical to one or more identifier-related information corresponding to the second device.

[0130] In another example, the second address mapping relationship may be a subset of the first address mapping relationship. That is, the one or more identifier-related information configured for the second device may be a subset of the one or more identifier-related information configured for the first device. For example, the one or more identifier-related information configured for the second device may only include the identifiers of one or more services; whereas the one or more identifier-related information configured for the first device may include: the identifiers of one or more services, the identifiers of one or more first-category devices, and so on.

[0131] The second configuration information may also include pre-configured service-related information; wherein, the pre-configured service-related information may include at least one of the following: an identifier of the second device, an identifier of the service supported by the second device, a verification password used by the second device, an information type supported by the second device, and an identifier of the service group to which the service supported by the second device belongs.

[0132] The identifiers of the services supported by the second device may be one or more, and are not limited in this embodiment. The verification password used by the second device may be preset based on actual circumstances and is not limited in this embodiment. The information type supported by the second device may be at least one of temperature data, humidity data, time data, and the like, and all possible information types are not exhaustively listed here. The identifiers of the service groups to which the services supported by the second device belong may also be set based on actual circumstances and are not limited in this embodiment.

[0133] It should be understood that the second device pre-configures the aforementioned second configuration information, which can be written into the memory of the second device before leaving the factory, or of course can be written into the memory of the second device after leaving the factory according to actual needs. All possible writing methods or timings are not limited here.

[0134] It should be noted that the aforementioned second device can be any one of one or more authorized first-category devices, so the aforementioned information can be saved for each authorized first-category device, but will not be described in detail one by one.

[0135] The third configuration information can be saved on the network device side, and the third configuration information can include at least the authorization information of the aforementioned first device. In addition, the third configuration information can also include pre-configuration information, and the pre-configuration information includes at least one of the following: one or more identifiers of the first type of devices that are allowed to be authorized; one or more identifiers of the first type of devices that are allowed to be authorized under each service in one or more services; the type of information that needs to be detected under each service in one or more services. Here, the network device that saves the third configuration information can specifically be a third network device, and the third network device can be the same as or different from the aforementioned first network device, and the third network device can be the same as or different from the aforementioned second network device. Exemplarily, the third network device can be a third core network device, such as PCF, AF, etc., which is not limited in this embodiment.

[0136] In one embodiment, before executing S410 above on the first device side, the following steps may be performed: the first device sends a trigger signal; the first device receives one or more response messages to the trigger signal; the first device determines the identifiers of one or more first-category devices based on the one or more response messages; and the first device generates first information based on the identifiers of the one or more first-category devices. Accordingly, before executing S610 above on the second device side, the following steps may be performed: the second device receives the trigger signal sent by the first device; the second device sends a response message to the first device regarding the trigger signal; and the response message to the trigger signal includes the identifier of the second device.

[0137] It should be noted that the second device can be any one of one or more authorized first-category devices on the first device side. Therefore, the same processing as the second device mentioned above can be performed on each first-category device, but they will not be described one by one.

[0138] Optionally, the first device sending the trigger signal may include: if the first device determines based on the authorization information that it is used for relay transmission, the first device sending the trigger signal; wherein the authorization information is pre-configured or configured by the network device. Furthermore, the first device may also include: if the first device determines based on the authorization information that it is not used for relay transmission, the first device not sending the trigger signal and terminating the process.

[0139] For example, if the authorization information only includes an indication of whether the first device is used for relay transmission, and the indication of whether the first device is used for relay transmission indicates that the first device is not used for relay transmission, the first device determines that it is not used for relay transmission, and the first device does not send the trigger signal. For example, if the authorization information only includes an indication of whether the first device is used for relay transmission, and the indication of whether the first device is used for relay transmission indicates that the first device is used for relay transmission, the first device determines that it is used for relay transmission, and the first device sends the trigger signal. For another example, if the authorization information only includes the ID (identity) of one or more services that the first device can relay transmit, the first device determines that it is used for relay transmission, and the first device sends the trigger signal. For another example, if the authorization information includes an indication of whether the first device is used for relay transmission, and the indication of whether the first device is used for relay transmission indicates that the first device is used for relay transmission, and the authorization information includes the ID (identity) of one or more services that the first device can relay transmit, the first device determines that it is used for relay transmission, and the first device sends the trigger signal.

[0140] In one embodiment, the trigger signal may include: a first target layer 2 (L2) identifier. In addition, the trigger signal may also include: a first source L2 identifier.

[0141] The first source L2 identifier may be allocated by the first device itself, and this embodiment does not limit the specific allocation method.

[0142] The trigger signal may be a physical layer signal, and the trigger signal may only include the first target L2 identifier and the first source L2 identifier.

[0143] Specifically, the trigger signal is a physical layer signal of the PC5 interface protocol stack. As shown in FIG7 , the PC5 interface protocol stack may include three layers: a PC5 signaling layer (or the signaling layer of the PC5 interface protocol stack), a PC5 MAC layer (or the MAC layer of the PC5 interface protocol stack), and a PC5 physical layer (or the physical layer of the PC5 interface protocol stack).

[0144] The first target L2 identifier in the trigger signal is in the packet header of the MAC layer of the protocol stack of the PC5 interface. The first source L2 identifier in the trigger signal can also be in the packet header of the MAC layer of the protocol stack of the PC5 interface.

[0145] In one embodiment, the way in which the first device determines the first target L2 identifier in the trigger signal may include: the first device determines the first target layer 2 L2 identifier based on the identifier-related information corresponding to the first service and the address mapping relationship; wherein the address mapping relationship is pre-configured or configured by the network device.

[0146] As previously explained, the identification-related information may include one of the following: a service identifier, a service group identifier, or a first-category device identifier. Accordingly, the identification-related information corresponding to the first service may include one of the following: an identifier of the service corresponding to the first service, an identifier of the service group corresponding to the first service, or an identifier of the first-category device corresponding to the first service. It should be understood that the identifier of the service group corresponding to the first service may refer to the identifier of the service group to which the first service belongs; and the identifier of the first-category device corresponding to the first service may refer to the identifier of the first-category device that the first device needs to detect or can relay transmissions under the first service.

[0147] The determination of the first target L2 identifier based on the identifier-related information and the address mapping relationship corresponding to the first service may be any one of the following:

[0148] Determining a matching service identifier from the address mapping relationship based on the service identifier corresponding to the first service, and using the L2 identifier corresponding to the matching service identifier as the first target L2 identifier;

[0149] Determine an identifier of a matching service group from the address mapping relationship based on the identifier of the service group corresponding to the first service, and use the L2 identifier corresponding to the identifier of the matching service group as the first target L2 identifier;

[0150] Based on the identifier of the first type of device corresponding to the first service, the identifier of the matching first type of device is determined from the address mapping relationship, and the L2 identifier corresponding to the identifier of the matching first type of device is used as the first target L2 identifier.

[0151] It should be noted that, in the case where the identifier-related information corresponding to the first service is the identifier of the first-category device corresponding to the first service, if the first service corresponds to one or more identifiers of the first-category device, one or more first target L2 identifiers can be determined based on the identifiers of the one or more first-category devices and the address mapping relationship; accordingly, one or more trigger signals can be generated, wherein different trigger signals use different first target L2 identifiers. However, in this case, the same source L2 identifier can be used in different trigger signals because the source L2 identifier is uniformly generated by the first device itself, and therefore, the same source L2 identifier can be used.

[0152] Optionally, the first device can generate and send the trigger signal when the sending cycle is reached; accordingly, the first device can determine the first target L2 identifier based on the identifier-related information and address mapping relationship corresponding to the first service when it is determined based on the current time and the sending cycle that a trigger signal needs to be sent.

[0153] Among them, the cycle length of the sending cycle can be set according to actual conditions, for example, the cycle length can be set to 1 hour, 12 hours, or longer or shorter, which are not exhaustively listed here.

[0154] It should be understood that in this example, the way in which the first device determines the first service can be pre-configured according to actual conditions. For example, the first device can determine that there are three services that can be relayed based on the authorization information, and the user or administrator can pre-designate any one of them as the aforementioned first service.

[0155] The specific processing method for the first device to determine the first target L2 identifier based on the identifier-related information and the address mapping relationship corresponding to the first service is the same as that in the above embodiment and will not be elaborated on.

[0156] Optionally, the first device can generate the trigger signal according to the user's operation instruction; accordingly, the first device can determine the identification-related information corresponding to the first service based on the user's operation instruction, and determine the first target L2 identification based on the identification-related information corresponding to the first service and the address mapping relationship.

[0157] Specifically, the user's operation instruction may be generated by the user's operation on the interactive interface of the first device. For example, based on the user's operation instruction, the first service selected this time may be determined, and the service identifier of the first service may be used as the identifier-related information corresponding to the first service. For another example, based on the user's operation instruction, one or more first-category devices under the first service selected this time may be determined, and the identifiers of the one or more first-category devices under the first service selected this time may be used as the identifier-related information corresponding to the aforementioned first service.

[0158] The specific processing method for the first device to determine the first target L2 identifier based on the identifier-related information and the address mapping relationship corresponding to the first service is the same as that in the above embodiment and will not be repeated.

[0159] Optionally, the first device can determine whether it is currently located in the service area of ​​the first service based on its current location, and generate the trigger signal if it is determined to be located in the service area of ​​the first service. Accordingly, when the first device is located in the service area of ​​the first service, the first device determines the identifier-related information corresponding to the first service based on the service area of ​​the first service; wherein the service area of ​​the first service is preconfigured or configured by a network device. Furthermore, the first device determines the first target L2 identifier based on the identifier-related information corresponding to the first service and the address mapping relationship.

[0160] As described in the preceding embodiments, the first device can pre-store relevant configuration information corresponding to the relayed service. Since the first service is any one of one or more services that the first device can relay, the first device can determine whether it is currently located within the service area of ​​any one of the services based on its current location and the relevant configuration information corresponding to the relayed service. If it is located within the service area of ​​any one of the services, the service is treated as the aforementioned first service, i.e., the first device is determined to be within the service area of ​​the first service.

[0161] Furthermore, when the first device determines that it is located in the service area of ​​the first service, the first device may further determine, based on the relevant configuration information corresponding to the first service, at least one of an identifier of a service corresponding to the first service, an identifier of a service group corresponding to the first service, and an identifier of a first-category device corresponding to the first service. The first device may use any one of the identifier of the first service, the identifier of the service group corresponding to the first service, and the identifier of the first-category device corresponding to the first service as the aforementioned identifier-related information corresponding to the first service.

[0162] The specific processing method for the first device to determine the first target L2 identifier based on the identifier-related information and the address mapping relationship corresponding to the first service is the same as that in the above embodiment and will not be elaborated on.

[0163] In one embodiment, in addition to the first target L2 identifier and the first source L2 identifier, the trigger signal also includes trigger-related information; the trigger-related information includes at least one of the following: the identifier of the first device, trigger content-related information, and indication information of the first device for relay transmission.

[0164] The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group where the first service is located, a target password, and an information type that the first service needs to detect.

[0165] The first target L2 identifier and the first source L2 identifier in the trigger signal may also be in a packet header of the MAC layer of the protocol stack of the PC5 interface. The trigger-related information may be included in a signaling layer of the protocol stack of the PC5 interface, which is located above the MAC layer of the protocol stack of the PC5 interface.

[0166] At least one of the identifier of the service group in which the first service is located and the type of information that the first service needs to detect is pre-configured or configured by the network device. Specifically, the identifier of the service group in which the first service is located and the type of information that the first service needs to detect may be included in the relevant configuration information corresponding to the aforementioned relay-transmitted service. That is, after the first device determines the first service, it can obtain, based on the service identifier corresponding to the first service, at least one of the identifier of the service group in which the first service is located and the type of information that the first service needs to detect from the relevant configuration information corresponding to the aforementioned relay-transmitted service.

[0167] The indication information indicating that the first device is used for relay transmission may be represented by a preset indication value or indication content. For example, if the indication value of the indication information indicating that the first device is used for relay transmission is 01, it indicates that the first device is capable of relay transmission; otherwise, it indicates that the first device is not capable of relay transmission. It should be understood that this is merely an example and is not intended to limit this embodiment.

[0168] In one embodiment, the target password may be determined based on the aforementioned password mapping relationship. The method for determining the aforementioned target password may include: the first device determining the target password based on the identification-related information corresponding to the first service and the password mapping relationship; wherein the password mapping relationship is preconfigured or configured by the network device.

[0169] As previously explained, the identifier-related information corresponding to the first service may include one of the following: an identifier of the service corresponding to the first service, an identifier of the service group corresponding to the first service, and an identifier of a first-category device corresponding to the first service. Specifically, the identifier of the service group corresponding to the first service may refer to the identifier of the service group to which the first service belongs; the identifier of the first-category device corresponding to the first service may refer to the identifier of the first-category device that the first device needs to detect or can relay transmissions for under the first service.

[0170] The target password is determined based on the identification-related information corresponding to the first service and the password mapping relationship, and can be any one of the following:

[0171] Determining a matching service identifier from a password mapping relationship based on the service identifier corresponding to the first service, and using the password corresponding to the matching service identifier as the target password;

[0172] Determining an identifier of a matching service group from a password mapping relationship based on the identifier of the service group corresponding to the first service, and using the password corresponding to the identifier of the matching service group as the target password;

[0173] Based on the identifier of the first type of device corresponding to the first service, the identifier of the matching first type of device is determined from the address mapping relationship, and the password corresponding to the identifier of the matching first type of device is used as the aforementioned target password.

[0174] It should be pointed out that in the case where the identification-related information corresponding to the first business is the identification of the first category of device corresponding to the first business, if the first business corresponds to the identification of one or more first category devices, then one or more target passwords can be determined based on the identification of the one or more first category devices and the password mapping relationship; accordingly, one or more trigger signals can be generated, wherein different trigger signals contain different target passwords.

[0175] Based on the above processing, the first device can generate a trigger signal and then send the trigger signal. It should be noted that when the first device sends the trigger signal, it can also predetermine the transmission power and / or coverage range of the trigger signal. For example, the first device can determine the transmission power and / or coverage range based on the size of the service area of ​​the first service.

[0176] After the first device sends a trigger signal, the processing that the aforementioned second device can perform after receiving the trigger signal includes: the second device receives the trigger signal sent by the first device; the second device sends response information of the trigger signal to the first device; the response information of the trigger signal includes the identification of the second device.

[0177] In one embodiment, the second device sends response information of the trigger signal to the first device, including: when the second device determines that a preset condition is met based on the trigger signal, the second device sends the response information of the trigger signal to the first device.

[0178] In addition, the method may further include: when the second device determines based on the trigger signal that a preset condition is not satisfied, the second device may discard the trigger signal without performing any processing.

[0179] The preset condition includes at least one of the following: the identifier-related information of the first service matches the pre-configured service-related information; wherein the identifier-related information of the first service is determined based on the first target L2 identifier and the second address mapping relationship in the trigger signal;

[0180] The trigger-related information in the trigger signal matches the pre-configured service-related information.

[0181] The pre-configured service-related information includes at least one of the following: an identifier of a service supported by the second device, an identifier of a service group to which the service supported by the second device belongs, an identifier of the second device, a verification password used by the second device, and an information type supported by the second device. The specific description of the pre-configured service-related information has been detailed in the previous embodiment and is not repeated here.

[0182] Optionally, the preset condition includes that the identifier-related information of the first service matches the pre-configured service-related information. The pre-configured service-related information includes at least one of the following: an identifier of a service supported by the second device, an identifier of a service group to which the service supported by the second device belongs, or an identifier of the second device.

[0183] The processing method by which the second device determines whether the identification-related information of the first service matches the pre-configured service-related information may include: the second device determines the identification-related information corresponding to the first service based on the first target L2 identification and address mapping relationship in the trigger signal; and when the identification-related information corresponding to the first service is the same as the pre-configured service-related information, determines that the preset condition is met.

[0184] The second device determining, based on the first target L2 identifier in the trigger signal and the address mapping relationship, the identifier-related information corresponding to the first service may include: the second device matching the first target L2 identifier in the trigger signal with the L2 identifier included in the address mapping relationship, and using the identifier-related information corresponding to the matched L2 identifier as the identifier-related information corresponding to the first service. The identifier-related information corresponding to the first service may be any one of an identifier of the service corresponding to the first service, an identifier of the service group to which the first service belongs, and an identifier of a first-category device corresponding to the first service.

[0185] Furthermore, the second device can determine that the preset condition is met if the identification-related information corresponding to the first service matches any one of the identification of the service supported by the second device, the identification of the service group in which the service supported by the second device is located, and the identification of the second device contained in the aforementioned pre-configured service-related information; otherwise, it is determined that the preset condition is not met.

[0186] Optionally, the preset condition includes that the trigger-related information in the trigger signal matches the pre-configured service-related information. The pre-configured service-related information includes at least one of the following: an identifier of a service group to which a service supported by the second device belongs, a verification password used by the second device, and an information type supported by the second device.

[0187] The processing manner in which the second device determines whether the trigger-related information in the trigger signal matches the pre-configured service-related information may include at least one of the following:

[0188] When the second device obtains the target password from the trigger-related information, performing a consistency check between the verification password used by the second device in the pre-configured service-related information and the target password, and determining that the preset condition is met if the verification passes;

[0189] When the second device obtains the information type that needs to be detected corresponding to the first service from the trigger-related information, if the information type supported by the second device in the pre-configured service-related information is the same as the information type that needs to be detected corresponding to the first service, determining that the preset condition is met;

[0190] When the second device obtains the identifier of the service group where the first service is located from the trigger related information, if the identifier of the service group where the service supported by the second device in the pre-configured service related information is the same as the identifier of the service group where the first service is located, it is determined that the preset condition is met.

[0191] Optionally, the preset condition includes: the identifier-related information corresponding to the first service matches the pre-configured service-related information; and the trigger-related information in the trigger signal matches the pre-configured service-related information. Accordingly, the pre-configured service-related information includes: the identifier of the service supported by the second device, the identifier of the service group to which the service supported by the second device belongs, the identifier of the second device, a verification password used by the second device, and information types supported by the second device.

[0192] The process of determining whether the preset condition is satisfied by the second device may include: the second device first determining whether the identification-related information of the first service matches the pre-configured service-related information; if it is determined that the identification-related information corresponding to the first service is the same as the pre-configured service-related information, further determining whether the trigger-related information in the trigger signal matches the pre-configured service-related information; if so, the preset condition is satisfied; otherwise, the preset condition is not satisfied. Here, the processing methods for determining whether the identification-related information of the first service matches the pre-configured service-related information, and determining whether the trigger-related information in the trigger signal matches the pre-configured service-related information, are the same as those in the aforementioned embodiment and are not repeated here.

[0193] In one embodiment, the response information may further include a second target L2 identifier; the second target L2 identifier may be the first target L2 identifier in the trigger signal, or the first source L2 identifier of the first device in the trigger signal. It should be noted that the response information to the trigger signal may also include a second source L2 identifier; the second source L2 identifier may be preconfigured by the second device.

[0194] Furthermore, the response information to the trigger signal also includes information collected by the second device. That is, if the second device has already acquired the collected information, the response information to the trigger signal may include the information collected by the second device. More specifically, the information collected by the second device may be information collected by the second device about the first service.

[0195] The response information for the aforementioned trigger signal may also be a physical layer signal of the protocol stack of the PC5 interface. The second target L2 identifier and the second source L2 identifier may be in a packet header of the MAC layer of the protocol stack of the PC5 interface. The identifier of the second device and the information collected by the second device may be included in the signaling layer of the protocol stack of the PC5 interface, which is located above the MAC layer of the protocol stack of the PC5 interface.

[0196] The aforementioned second device is any one of one or more first-category devices, that is, the first device receives one or more response information of the trigger signal, which may mean that the first device can receive response information of the trigger signal sent by one or more first-category devices.

[0197] In one embodiment, the first device determines the identification of one or more first-category devices based on the one or more response information; and the first device generates the first information based on the identification of the one or more first-category devices.

[0198] In one example, the first device determines the identifiers of one or more first-category devices based on the one or more response information, which may mean that the first device obtains the identifiers of one or more first-category devices from the one or more response information. Accordingly, the first device directly generates the first information based on the identifiers of the one or more first-category devices. That is, the first device directly adds the identifiers of the one or more first-category devices obtained from the one or more response information to the first information. The first information may only contain the identifiers of one or more first-category devices. Specifically, in the first information, the identifiers of the one or more first-category devices may be in a list form, that is, the first information may contain a list of first-category devices.

[0199] In this example, the first device generates the first information based on the identifiers of the one or more first-category devices. Alternatively, the first device may generate the first information based on the identifiers of the one or more first-category devices and third information, wherein the third information includes the identifier of the first service.

[0200] Furthermore, the aforementioned response information may also include information collected by the second device; accordingly, the first device may obtain information collected by one or more first-category devices from one or more response information. The aforementioned third information may also include information collected by one or more first-category devices.

[0201] In another example, the first device determines the identification of one or more first-category devices based on the one or more response information, which may mean: the first device obtains the identification of one or more first-category devices to be detected from the one or more response information; performs identity checks on the identification of the one or more first-category devices to be detected respectively, and uses the identification of one or more first-category devices that pass the identity check as the identification of the aforementioned one or more first-category devices.

[0202] Specifically, the first device performs identity checks on the identifiers of the one or more first-category devices to be detected, respectively, which may include: the first device performs identity checks on the identifiers of each first-category device to be detected in the one or more first-category devices to be detected based on the identifier of the first-category device corresponding to the relayed service contained in the relevant configuration information corresponding to the relayed service. For example, the first device matches the identifier of the i-th first-category device to be detected in the one or more first-category devices to be detected with the identifier of the first-category device corresponding to the relayed service. If the identifier of the i-th first-category device to be detected matches any one of the identifiers of the first-category device corresponding to the relayed service, it is determined that the identity check of the i-th first-category device to be detected has passed; otherwise, it is determined that the identity check of the i-th first-category device to be detected has failed. Wherein, i is a positive integer.

[0203] The first device generates the first information based on the identifiers of the one or more first-category devices. Specifically, the first device may generate the first information based on the identifiers of the one or more first-category devices and third information.

[0204] Among them, the third information includes at least one of the following: information collected by the one or more first-category devices, identification of the first service, and indication information of completing the identity check. The relevant instructions about the information collected by the one or more first-category devices and the identification of the first service are the same as the above examples. In this example, the indication information of completing the identity check can be represented based on a specific indication value or indication content. For example, if the indication value of the indication information of completing the identity check is 100, it can indicate that the first device has completed the identity check on one or more first-category devices. Otherwise, it can indicate that the first device has not performed an identity check on one or more first-category devices. It should be understood that this is only an exemplary explanation and is not a limitation on the specific content of the indication information of completing the identity check.

[0205] In one embodiment, the method further includes: the first device sends first information; the first information includes the identification of one or more first-category devices; the first device receives second information; the second information includes the identification of the one or more authorized first-category devices.

[0206] The method also includes: the network device receives first information sent by the first device; the first information includes the identification of one or more first-category devices; the network device determines one or more authorized first-category devices based on the first information; the network device generates and sends second information to the first device based on the identification of the one or more authorized first-category devices.

[0207] The network device determines, based on the first information, one or more authorized first-category devices, including:

[0208] When the network device determines that the first device is used for relay transmission based on the authorization information corresponding to the first device, the network device determines one or more authorized first-category devices from the one or more first-category devices based on the first information; wherein the authorization information corresponding to the first device includes: an indication of whether the first device is used for relay transmission.

[0209] That is, the network device can determine whether the first device is used for relay transmission based on the authorization information corresponding to the first device; if it is determined that the first device is not used for relay transmission, the processing ends; if the first device is used for relay transmission, the network device determines one or more authorized first-category devices based on the first information. The specific content that the authorization information corresponding to the first device may include is the same as the description of the authorization information above and is not repeated here.

[0210] The network device determines, based on the first information, one or more authorized first-category devices, including:

[0211] The network device determines one or more authorized first-category devices from the one or more first-category devices included in the first information based on the pre-configuration information.

[0212] The pre-configuration information includes at least one of the following:

[0213] One or more identifiers of the first category of devices permitted for authorization;

[0214] One or more services, and the identifiers of one or more first-category devices permitted for authorization under each service;

[0215] The information type that needs to be detected in each of one or more services.

[0216] In one example, the first information may include at least the identifiers of the one or more first-category devices; accordingly, the pre-configuration information may include at least the identifiers of one or more first-category devices permitted for authorization. The network device may, based on the identifiers of the one or more first-category devices permitted for authorization, determine, from the one or more first-category devices included in the first information, the one or more first-category devices permitted for authorization as the one or more authorized first-category devices.

[0217] For example, the pre-configuration information includes the IDs of 10 first-class devices that are allowed to be authorized, namely first-class device 1 to first-class device 10; the first information includes 5 first-class devices, namely first-class device 1, first-class device 2, first-class device 3, first-class device 11, and first-class device 14; based on the pre-configuration information, it can be determined that first-class device 1, first-class device 2, and first-class device 3 in the first information are authorized first-class devices.

[0218] In one example, the first information may include the identifiers of the one or more first-category devices, and third information; the third information may include the identifier of the first service. Accordingly, the pre-configuration information may include at least the identifiers of one or more first-category devices allowed for authorization under each service in the one or more services. Based on the identifier of the first service in the first information, the network device may obtain the identifiers of the one or more first-category devices allowed for authorization under the first service from the pre-configuration information; based on the identifiers of the one or more first-category devices allowed for authorization under the first service, the network device may determine, from the one or more first-category devices contained in the first information, the one or more first-category devices allowed for authorization as the aforementioned one or more authorized first-category devices.

[0219] For example, the network device obtains the identifier of the first service from the third information of the first information; based on the identifier of the first service, the IDs of three first-class devices allowed for authorization under the first service are obtained from the pre-configuration information, namely, first-class device 1, first-class device 3, and first-class device 10; assuming that the network device obtains five first-class devices from the first information, namely, first-class device 1, first-class device 2, first-class device 3, first-class device 11, and first-class device 14; then, based on the pre-configuration information, it can be determined that first-class device 1 and first-class device 3 in the first information are authorized first-class devices.

[0220] In one example, the first information may include the identifiers of the one or more first-category devices, and third information; the third information may include the identifier of the first service and the information collected by the one or more first-category devices. Accordingly, the pre-configuration information may at least include the identifiers of one or more first-category devices allowed to be authorized under each service in one or more services; and also include the type of information that needs to be detected under each service in one or more services. The network device may obtain the identifier of the first service based on the third information of the first information, obtain the identifiers of one or more first-category devices allowed to be authorized under the first service from the pre-configuration information; determine one or more first-category devices allowed to be authorized from the one or more first-category devices contained in the first information based on the identifiers of the one or more first-category devices allowed to be authorized under the first service; determine the authorized first-category device from the one or more first-category devices allowed to be authorized based on the type of information that needs to be detected under the first service and the type of information collected by one or more first-category devices allowed to be authorized.

[0221] For example, a network device obtains the identifier of the first service from the third information in the first information; based on the identifier of the first service, it obtains the IDs of three authorized Class I devices under the first service from the preconfiguration information, namely, Class I device 1, Class I device 3, and Class I device 10. Assuming that the first information contains five Class I devices, namely, Class I device 1, Class I device 2, Class I device 3, Class I device 11, and Class I device 14, then based on the preconfiguration information, it can be determined that Class I devices 1 and 3 in the first information are authorized Class I devices. Assuming that the network device obtains from the third information in the first information that the information collected by Class I device 1 is humidity information, and the information collected by Class I device 3 is temperature information; the preconfiguration information contains the types of information that Class I devices are allowed to collect as humidity information and time information, and the type of information that Class I device 3 is allowed to collect as temperature information, then it can be determined that Class I devices 1 and 3 are the two authorized Class I devices.

[0222] After the network device determines the one or more authorized first-category devices, it may generate second information based on the identifiers of the one or more authorized first-category devices, and then send the second information to the first device. The identifiers of the one or more authorized first-category devices included in the second information may be in the form of a list, that is, the second information may include a list of authorized first-category devices.

[0223] The network device that receives the first information and sends the second information may be the third network device.

[0224] In one implementation, the method may further include: after the first device receives the second information, the first device sends a session establishment request; wherein the session establishment request is used to request establishment of a session for the first service.

[0225] The first device sending the session establishment request may refer to: the first device sending the session establishment request to the network device. It should be noted that the network device to which the first device sends the session establishment request may be the aforementioned first network device.

[0226] The session establishment request is carried by an uplink NAS transmission message.

[0227] The uplink NAS transmission message also carries: parameters of the first service.

[0228] Specifically, the parameters of the first service may include: session parameters corresponding to the first service. The way in which the first device determines the session parameters corresponding to the first service may be to determine the session parameters corresponding to the first service from the session parameters corresponding to the aforementioned pre-configured relay-transmitted service based on the identifier of the first service. The aforementioned embodiment has explained that the session parameters corresponding to the relay-transmitted service may include at least one of the DNN corresponding to the relay-transmitted service and the S-NSSAI corresponding to the relay-transmitted service. Accordingly, the session parameters of the first service may include at least one of the DNN corresponding to the first service and the S-NSSAI corresponding to the first service.

[0229] Furthermore, the parameters of the first service may also include: indication information of a zero-power service session. The indication information of the zero-power service session may indicate whether the session requested to be established is for the zero-power service through a specific indication value or indication content; for example, if the indication value of the indication information of the zero-power service session is 10, it may indicate that the session requested to be established is for the zero-power service; otherwise, it indicates that the session requested to be established is not for the zero-power service.

[0230] Specifically, the parameters of the first service include at least one of the following: the data network name DNN corresponding to the first service, the single network slice selection auxiliary information S-NSSAI corresponding to the first service, and indication information of the zero-power service session.

[0231] After completing the above processing, the first device can also receive a session establishment completion notification sent by the network device. Upon receiving the session establishment completion notification, the first device can execute the above S410, that is, the first device receives the first business information sent by the second device; correspondingly, the above second device can execute the above S610, and the second device sends the first business information to the first device.

[0232] Furthermore, the first device can execute S420, and the first device sends the first business information to the network device through the first business session; correspondingly, the network device, that is, the aforementioned first network device, can execute S510, and the network device receives the first business information sent by the second device from the first device through the first business session; wherein, the second device is one of one or more authorized first-category devices.

[0233] Here, the second device can be any one of the one or more authorized first-category devices mentioned above, that is, any authorized first-category device can send the first business information to the aforementioned first device when the first business information is collected; correspondingly, when the first device receives the first business information sent by any first-category device, it can send the first business information to the network device through the first business session.

[0234] As can be seen, by adopting the above solution, the first device can transmit the first service information sent by the second device to the network device through the first service session. This implements a communication mechanism that transmits the service information of the second device to the network through an intermediate device, thus avoiding the problem of requiring the second device to communicate directly with the network side, which would result in excessive power consumption requirements for the second device.

[0235] In conjunction with Figure 8, the aforementioned communication method is exemplarily described by taking the aforementioned first device as a Proxy UE (User Equipment), the first type of device as a Tag (label), the number of which can be two, namely Tag1 and Tag2, and the second device as Tag1 as an example. As shown in Figure 8, the process of the communication method may include:

[0236] S801. The Proxy UE obtains first configuration information.

[0237] The first configuration information may be pre-configured when the Proxy UE leaves the factory, or may be configured by a second network device; wherein the second network device may be any core network device, such as the second network device illustrated in FIG8 as an AF, or may also be a PCF (not shown in the figure). It should be understood that this is merely an illustrative description and is not intended to limit this example.

[0238] The first configuration information may include at least one of the following: authorization information, configuration information corresponding to the relay transmission service, a first address mapping relationship, and a password mapping relationship. The specific content of the first configuration information is the same as that in the above embodiment and will not be repeated.

[0239] Similarly, in the first type of device, i.e., the tag, second configuration information can be pre-stored. This second configuration information can include at least an address mapping relationship. This second configuration information can also include at least one of the following: the tag identifier, the identifier of the service supported by the tag, the verification password used by the tag, the information type supported by the tag, and the identifier of the service group to which the service supported by the tag belongs. The specific description of the second configuration information is the same as that in the previous embodiment and is not repeated here.

[0240] S802: The Proxy UE sends a trigger signal.

[0241] Exemplarily, if the relevant configuration information corresponding to the relay-transmitted service in the first configuration information includes the service area corresponding to the relay-transmitted service, the Proxy UE can determine whether it is located within the service area corresponding to any one of the relay-transmitted services based on the current position. If the Proxy UE is determined to be within the service area of ​​the first service, the sending power and / or coverage range of the trigger signal can be determined according to the size of the service area of ​​the first service.

[0242] The trigger signal may include a first target L2 identifier and a first source L2 identifier. The method for determining the first target L2 identifier is the same as in the aforementioned embodiment and is not further described. The first source L2 ID may be assigned by the proxy UE itself. The trigger signal may be a physical layer signal that does not contain special information and relies solely on the L2 ID (i.e., the aforementioned first target L2 identifier) ​​to distinguish services.

[0243] Furthermore, the trigger signal may also include trigger-related information; the trigger-related information includes at least one of the following: the ID of the proxy UE, trigger content-related information, and indication information of the first device for relay transmission. The trigger content-related information may include at least one of the following: an identifier of the first service (for example, it can be expressed as a service ID), an identifier of the service group to which the first service belongs (which can be expressed as a group ID), a target password (i.e., a password used for tag verification), and the type of information that the first service needs to detect.

[0244] S803. The Tag receives the trigger signal sent by the Proxy UE and sends response information of the trigger signal to the Proxy UE. The response information includes the identifier of the Tag.

[0245] Specifically, in S8031, Tag1 receives the trigger signal sent by the Proxy UE and sends response information of the trigger signal to the Proxy UE, where the response information includes the identifier of Tag1.

[0246] S8032. Tag2 receives the trigger signal sent by the Proxy UE and sends response information of the trigger signal to the Proxy UE. The response information includes the identifier of Tag2.

[0247] Taking the processing of Tag1 as an example, Tag1 can send a response message of the trigger signal to the Proxy UE when it determines that the preset condition is met based on the trigger signal. The description of the preset condition and the specific determination processing of Tag1 are the same as those in the previous embodiment and are not repeated here.

[0248] The response message sent by Tag1 may include only its ID; in addition, the response message may also include information collected by Tag1, which corresponds to the information type that the first service needs to detect. Tag1 may use the proxy UE's first source L2 ID (identifier), or the trigger signal's first destination L2 ID (identifier), as the second destination L2 ID of the response message; in addition, Tag1 uses its own L2 ID as the second source L2 ID in the response message.

[0249] S804: The Proxy UE receives two response messages of the trigger signal, and determines the identifiers of Tag1 and Tag2 based on the two response messages.

[0250] Specifically, the Proxy UE receives two response messages that use its own first source L2 ID or the configured first target L2 ID as the second destination L2 ID. It obtains the ID of Tag1 and the ID of Tag2 from the two response messages. Furthermore, the Proxy UE can also obtain information collected by Tag1 and information collected by Tag2 from the two response messages, respectively.

[0251] In addition, if the relevant configuration information corresponding to the relay-transmitted service of the first configuration information contains the identifier of the first type of device corresponding to the relay-transmitted service (i.e., the Tag ID corresponding to the relay-transmitted service); the Proxy UE checks whether the ID of Tag1 and the ID of tag2 are in the Tag ID corresponding to the configured relay-transmitted service; if so, the Proxy UE considers that these tags can pass the identity check.

[0252] S805. The Proxy UE sends first information, where the first information includes a tag ID list.

[0253] The tag ID list may include the ID of Tag1 and the ID of tag2.

[0254] Specifically, the Proxy UE includes the received IDs of Tag1 and Tag2 into a tag ID list in the first information and sends the first information to the network device; the network device may be the third network device in the aforementioned embodiment, such as NF1 illustrated in Figure 8. It should be understood that third configuration information may also be pre-stored on the third network device, i.e., NF1. The specific definition of this third configuration information is the same as in the aforementioned embodiment and is not further described. Furthermore, the third configuration information stored by the third network device may also be configured by the second network device. It should be understood that the third network device may be the same as or different from the aforementioned second network device, and this embodiment does not limit this.

[0255] In addition, if the response information sent by tag1 and / or tag2 also includes information collected by tag1 and / or information collected by tag2, the first information may also include the information collected by tag1 and / or information collected by tag2.

[0256] Furthermore, if the Proxy UE completes the identity check on tag1 and tag2 and passes it in S804, the first information may further include indication information of the completion of the identity check.

[0257] S806. The Proxy UE receives second information, where the second information includes an authorized tag ID list.

[0258] Specifically, the Proxy UE receives the second information sent by NF1.

[0259] NF1 may determine one or more authorized first-category devices from the one or more first-category devices included in the first information based on the pre-configuration information. The specific processing method is the same as in the previous embodiment and is not described in detail here. The pre-configuration information may be included in the third configuration information, as described in the previous embodiment and is not repeated here.

[0260] S807. The Proxy UE sends a session establishment request to NF2. The session establishment request is used to request establishment of a session for the first service.

[0261] NF2 may be the aforementioned first network device. It should be noted that NF2 (i.e., the first network device) and NF1 (i.e., the third network device) may be the same or different. FIG8 illustrates the difference between NF1 and NF2 for illustrative purposes only and does not limit this embodiment.

[0262] Specifically, the session establishment request is used to request the establishment of a PDU session for the first service. The session establishment request may be carried by a UL NAS transport message. The UL NAS transport message may also carry parameters of the first session, such as the DNN corresponding to the first service, the S-NSSAI corresponding to the first service, and indication information of the zero-power service session.

[0263] NF2 may execute a session establishment process to establish a session for the proxy UE for the first service and the zero-power service, until the session establishment is completed, and send a notification of session establishment completion to the proxy UE.

[0264] S808. The Proxy UE receives the first service information sent by tag1.

[0265] Among them, tag1 can be the second device in the aforementioned embodiment.

[0266] S809. The Proxy UE sends the first service information to NF2 through the session of the first service.

[0267] That is, the Proxy UE uses the PDU session of the first service to transmit the first service information collected from Tag1 to the network (ie, NF2).

[0268] FIG9 is a schematic block diagram of a first device according to an embodiment of the present application. The first device may include:

[0269] The first communication unit 901 is configured to receive first service information sent by a second device; and send the first service information to a network device through a first service session; the second device is one of one or more authorized first-category devices.

[0270] The first communication unit 901 is configured to send first information including the identification of one or more first-category devices; and receive second information including the identification of one or more authorized first-category devices.

[0271] The first device further includes:

[0272] A first processing unit 902 is configured to determine, based on one or more response information, the identifiers of one or more first-category devices; and generate the first information based on the identifiers of the one or more first-category devices.

[0273] The first communication unit 901 is configured to send a trigger signal and receive one or more response messages to the trigger signal.

[0274] The trigger signal includes a first target layer 2 L2 identifier.

[0275] The trigger signal also includes trigger related information;

[0276] The trigger-related information includes at least one of the following: an identifier of the first device, trigger content-related information, and indication information of the first device for relay transmission.

[0277] The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group to which the first service belongs, a target password, and an information type that the first service needs to detect.

[0278] At least one of an identifier of the service group to which the first service belongs and a type of information corresponding to the first service that needs to be detected is pre-configured or configured by a network device.

[0279] The first target L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

[0280] The trigger signal further includes: a first source L2 identifier; the first source L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

[0281] The trigger related information is included in the signaling layer of the protocol stack of the PC5 interface, and the signaling layer is located above the MAC layer of the protocol stack of the PC5 interface.

[0282] The trigger signal is a physical layer signal of the protocol stack of the PC5 interface.

[0283] The first processing unit 902 is used to determine the first target layer 2 L2 identifier based on the identifier-related information corresponding to the first service and the first address mapping relationship; wherein the first address mapping relationship is pre-configured or configured by the network device.

[0284] The first processing unit is configured to determine, when located in a service area of ​​the first service, identification-related information corresponding to the first service based on the service area of ​​the first service; wherein the service area of ​​the first service is pre-configured or configured by a network device.

[0285] The first processing unit is configured to determine the target password based on the identification-related information corresponding to the first service and a password mapping relationship; wherein the password mapping relationship is pre-configured or configured by a network device.

[0286] The first address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information configured by the first device.

[0287] The password mapping relationship includes: a mapping relationship between each piece of identification-related information and a password in one or more identification-related information corresponding to the first device.

[0288] The identification-related information includes one of the following: an identification of a service, an identification of a service group, and an identification of a first-category device.

[0289] The first processing unit is configured to send the trigger signal through the first communication unit when determining that the first processing unit is used for relay transmission based on authorization information; wherein the authorization information is pre-configured or configured by the network device.

[0290] The authorization information includes an indication of whether the first device is used for relay transmission.

[0291] The authorization information includes: an identifier of the relay-transmitted service.

[0292] The first processing unit is configured to generate the first information based on the identifications of the one or more first-category devices and the third information.

[0293] The third information includes at least one of the following: information collected by the one or more first-category devices, an identifier of the first service, and indication information of completion of identity check.

[0294] The first communication unit is configured to send a session establishment request after receiving the second information; wherein the session establishment request is used to request establishment of a session for the first service.

[0295] The session establishment request is carried by an uplink NAS transmission message.

[0296] The uplink NAS transmission message also carries: parameters of the first service; wherein the parameters of the first service include at least one of the following: the data network name DNN corresponding to the first service, the single network slice selection auxiliary information S-NSSAI corresponding to the first service, and indication information of the zero-power service session.

[0297] The session of the first service is: a protocol data unit (PDU) session of the first service.

[0298] The first service is a zero-power service; and / or the first type of device is a zero-power device.

[0299] The first device of the embodiment of the present application can implement the corresponding functions of the first device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the first device can be found in the corresponding descriptions in the above-mentioned method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the first device of the application embodiment can be implemented by different modules (sub-modules, units or components, etc.), or by the same module (sub-modules, units or components, etc.).

[0300] FIG10 is a schematic block diagram of a network device according to an embodiment of the present application. The network device may include:

[0301] The second communication unit 1001 is configured to receive first service information sent by a second device from the first device through a first service session; wherein the second device is one of one or more authorized first category devices.

[0302] The network device further includes:

[0303] The second processing unit 1002 is configured to determine one or more authorized first-category devices based on the first information; and generate second information based on the identifiers of the one or more authorized first-category devices;

[0304] The second communication unit 1001 is configured to receive first information sent by the first device; the first information includes identifications of one or more first-category devices; and send second information to the first device.

[0305] The second processing unit 1002 is used to determine one or more authorized first-category devices based on the first information when, based on the authorization information corresponding to the first device, it is determined that the first device is used for relay transmission; wherein the authorization information corresponding to the first device includes: an indication of whether the first device is used for relay transmission.

[0306] The second processing unit 1002 is configured to determine, based on pre-configuration information, one or more authorized first-category devices from the one or more first-category devices included in the first information.

[0307] The pre-configuration information includes at least one of the following:

[0308] One or more identifiers of the first category of devices permitted for authorization;

[0309] One or more services, and the identifiers of one or more first-category devices permitted for authorization under each service;

[0310] The information type that needs to be detected in each of one or more services.

[0311] The session of the first service is: a packet data unit PDU session of the first service.

[0312] The first service is a zero-power service; and / or the first type of device is a zero-power device.

[0313] FIG11 is a schematic block diagram of a second device according to an embodiment of the present application. The second device may include:

[0314] The third communication unit 1101 is used to send first service information to the first device; the first service information is sent by the first device to the network device through the first service session; the second device is one of one or more authorized first-category devices.

[0315] The third communication unit 1101 is configured to receive a trigger signal sent by the first device; send response information of the trigger signal to the first device; and the response information includes an identifier of the second device.

[0316] The trigger signal includes the first target L2 identifier.

[0317] The trigger signal also includes trigger related information;

[0318] The trigger-related information includes at least one of the following: an identifier of the first device, trigger content-related information, and indication information authorizing the first device to be used for relay transmission.

[0319] The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group to which the first service belongs, a target password, and an information type that needs to be detected corresponding to the first service.

[0320] The first target L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

[0321] The trigger signal further includes: a first source L2 identifier; the first source L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

[0322] The trigger related information is included in the signaling layer of the protocol stack of the PC5 interface, and the signaling layer is located above the MAC layer of the protocol stack of the PC5 interface.

[0323] The trigger signal is a physical layer signal of the protocol stack of the PC5 interface.

[0324] The second device further includes:

[0325] The third processing unit 1102 is configured to send response information of the trigger signal to the first device through the third communication unit when it is determined that a preset condition is satisfied based on the trigger signal.

[0326] The preset conditions include at least one of the following:

[0327] The identifier-related information corresponding to the first service matches the pre-configured service-related information; wherein the identifier-related information corresponding to the first service is determined based on the first target L2 identifier and the second address mapping relationship in the trigger signal;

[0328] The trigger-related information in the trigger signal matches the pre-configured service-related information.

[0329] The second address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information configured by the second device.

[0330] The identification-related information includes one of the following: an identification of a service, an identification of a service group, and an identification of a first-category device.

[0331] The pre-configured service related information includes at least one of the following: an identifier of a service supported by the second device, an identifier of a service group to which the service supported by the second device belongs, an identifier of the second device, a verification password used by the second device, and an information type supported by the second device.

[0332] The response information also includes a second target L2 identifier; the second target L2 identifier is the first target L2 identifier in the trigger signal, or the first source L2 identifier in the trigger signal.

[0333] The response information also includes: information collected by the second device.

[0334] The first service is a zero-power service; and / or the first type of device is a zero-power device.

[0335] The second device of the embodiment of the present application can realize the corresponding function of the second device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (submodules, units or components, etc.) in the second device can be found in the corresponding description in the above-mentioned method embodiment, which will not be repeated here. It should be noted that the functions described by the various modules (submodules, units or components, etc.) in the second device of the application embodiment can be implemented by different modules (submodules, units or components, etc.), or by the same module (submodule, unit or component, etc.).

[0336] Figure 12 is a schematic structural diagram of a communication device 1200 according to an embodiment of the present application. The communication device 1200 includes a processor 1210, which can call and execute a computer program from a memory to enable the communication device 1200 to implement the method in the embodiment of the present application.

[0337] In one embodiment, the communication device 1200 may further include a memory 1220. The processor 1210 may call and execute a computer program from the memory 1220 to enable the communication device 1200 to implement the method in the embodiment of the present application.

[0338] The memory 1220 may be a separate device independent of the processor 1210 , or may be integrated into the processor 1210 .

[0339] In one embodiment, the communication device 1200 may further include a transceiver 1230 , and the processor 1210 may control the transceiver 1230 to communicate with other devices. Specifically, the transceiver 1230 may send information or data to other devices, or receive information or data sent by other devices.

[0340] The transceiver 1230 may include a transmitter and a receiver. The transceiver 1230 may further include an antenna, and the number of antennas may be one or more.

[0341] In one embodiment, the communication device 1200 may be the first device of the embodiment of the present application, and the communication device 1200 may implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0342] In one embodiment, the communication device 1200 may be a network device of an embodiment of the present application, and the communication device 1200 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0343] In one embodiment, the communication device 1200 may be the second device of the embodiment of the present application, and the communication device 1200 may implement the corresponding processes implemented by the second device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0344] 13 is a schematic structural diagram of a chip 1300 according to an embodiment of the present application. The chip 1300 includes a processor 1310, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0345] In one embodiment, the chip 1300 may further include a memory 1320. The processor 1310 may call and execute a computer program from the memory 1320 to implement the method executed by the first device, the network device, or the second device in the embodiment of the present application.

[0346] The memory 1320 may be a separate device independent of the processor 1310 , or may be integrated into the processor 1310 .

[0347] In one embodiment, the chip 1300 may further include an input interface 1330. The processor 1310 may control the input interface 1330 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0348] In one embodiment, the chip 1300 may further include an output interface 1340. The processor 1310 may control the output interface 1340 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0349] In one embodiment, the chip can be applied to the first device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0350] In one embodiment, the chip can be applied to the second device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the second device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0351] The chips used in the first device and the second device may be the same chip or different chips.

[0352] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0353] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0354] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0355] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0356] 14 is a schematic block diagram of a communication system 1400 according to an embodiment of the present application. The communication system 1400 includes a first device 1410 , a second device 1420 , and a network device 1430 .

[0357] The first device 1410 is used to execute the above communication method; the second device 1420 is used to execute the above communication method; and the network device 1430 is used to execute the above communication method.

[0358] The first device 1410 may be used to implement the corresponding functions implemented by the first device in the above method, the network device 1430 may be used to implement the corresponding functions implemented by the network device in the above method, and the second device 1420 may be used to implement the corresponding functions implemented by the second device in the above method. For the sake of brevity, these details are not repeated here.

[0359] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, 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 in accordance with 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 devices. 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 a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0360] 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.

[0361] Those skilled in the art will 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.

[0362] 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 modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, comprising: The first device receives the first service information sent by the second device; The second device is one of one or more authorized first category devices; The first device sends the first service information to the network device through a first service session.

2. The method according to claim 1, wherein The method further comprises: The first device sends first information; the first information includes identifications of one or more first-category devices; The first device receives second information; the second information includes identifications of the one or more authorized first-category devices.

3. The method according to claim 2, wherein: The method further comprises: The first device sends a trigger signal; The first device receives one or more response information of the trigger signal; The first device determines, based on the one or more response information, identifications of one or more first-category devices; The first device generates the first information based on the identifications of the one or more first-category devices.

4. The method according to claim 3, wherein: The trigger signal includes a first target layer 2 L2 identifier.

5. The method according to claim 4, wherein The trigger signal also includes trigger related information; The trigger-related information includes at least one of the following: an identifier of the first device, trigger content-related information, and indication information of the first device for relay transmission.

6. The method according to claim 5, wherein: The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group to which the first service belongs, a target password, and an information type that the first service needs to detect.

7. The method according to claim 6, wherein: At least one of an identifier of the service group to which the first service belongs and a type of information corresponding to the first service that needs to be detected is pre-configured or configured by a network device.

8. The method according to any one of claims 4 to 6, wherein: The first target L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

9. The method according to claim 8, wherein The trigger signal further includes: a first source L2 identifier; the first source L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

10. The method according to claim 5 or 6, wherein: The trigger related information is included in the signaling layer of the protocol stack of the PC5 interface, and the signaling layer is located above the MAC layer of the protocol stack of the PC5 interface.

11. The method according to any one of claims 8 to 10, wherein: The trigger signal is a physical layer signal of the protocol stack of the PC5 interface.

12. The method according to any one of claims 4 to 7, wherein: The method further comprises: The first device determines the first target layer 2 L2 identifier based on the identifier-related information corresponding to the first service and the first address mapping relationship; wherein the first address mapping relationship is pre-configured or configured by the network device.

13. The method according to claim 12, wherein: The method further comprises: When the first device is located in a service area of ​​the first service, the first device determines identification-related information corresponding to the first service based on the service area of ​​the first service; wherein the service area of ​​the first service is pre-configured or configured by a network device.

14. The method according to claim 6, wherein The method further comprises: The first device determines the target password based on the identification-related information corresponding to the first service and the password mapping relationship; wherein the password mapping relationship is pre-configured or configured by the network device.

15. The method according to claim 12 or 13, wherein: The first address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information configured by the first device.

16. The method according to claim 14, wherein The password mapping relationship includes: a mapping relationship between each piece of identification-related information and a password in one or more identification-related information corresponding to the first device.

17. The method according to any one of claims 14 to 16, wherein: The identification-related information includes one of the following: an identification of a service, an identification of a service group, and an identification of a first-category device.

18. The method according to claim 3, wherein The first device sending a trigger signal includes: When the first device determines that it is used for relay transmission based on the authorization information, the first device sends the trigger signal; wherein the authorization information is pre-configured or configured by the network device.

19. The method according to claim 18, wherein The authorization information includes an indication of whether the first device is used for relay transmission.

20. The method according to claim 18 or 19, wherein The authorization information includes: an identifier of the relay-transmitted service.

21. The method according to claim 3, wherein The generating the first information based on the identification of the one or more first-category devices includes: The first information is generated based on the identification of the one or more first-category devices and the third information.

22. The method according to claim 21, wherein The third information includes at least one of the following: information collected by the one or more first-category devices, an identifier of the first service, and indication information of completion of identity check.

23. The method according to claim 2, wherein The method further comprises: After the first device receives the second information, the first device sends a session establishment request; wherein the session establishment request is used to request establishment of a session for the first service.

24. The method according to claim 23, wherein The session establishment request is carried by an uplink NAS transmission message.

25. The method according to claim 24, wherein The uplink NAS transmission message further carries: parameters of the first service; Among them, the parameters of the first service include at least one of the following: the data network name DNN corresponding to the first service, the single network slice selection auxiliary information S-NSSAI corresponding to the first service, and indication information of the zero-power service session.

26. The method according to any one of claims 1 to 25, wherein: The session of the first service is: a protocol data unit (PDU) session of the first service.

27. The method according to any one of claims 1 to 26, wherein: The first service is a zero-power service; and / or the first type of device is a zero-power device.

28. A communication method, comprising: The network device receives first service information sent by a second device from the first device through a first service session; wherein the second device is one of one or more authorized first-category devices.

29. The method according to claim 28, wherein The method further comprises: The network device receives first information sent by the first device; the first information includes identifications of one or more first-category devices; The network device determines, based on the first information, one or more authorized first-category devices; The network device generates and sends second information to the first device based on the identifications of the one or more authorized first-category devices.

30. The method according to claim 29, wherein The network device determines, based on the first information, one or more authorized first-category devices, including: When the network device determines that the first device is used for relay transmission based on the authorization information corresponding to the first device, the network device determines one or more authorized first-category devices based on the first information; wherein the authorization information corresponding to the first device includes: an indication of whether the first device is used for relay transmission.

31. The method according to claim 29 or 30, wherein The network device determines, based on the first information, one or more authorized first-category devices, including: The network device determines one or more authorized first-category devices from the one or more first-category devices included in the first information based on the pre-configuration information.

32. The method according to claim 31, wherein The pre-configuration information includes at least one of the following: One or more identifiers of the first category of devices permitted for authorization; One or more services, and the identifiers of one or more first-category devices permitted for authorization under each service; The information type that needs to be detected in each of one or more services.

33. The method of claim 28, wherein: The session of the first service is: a packet data unit PDU session of the first service.

34. The method according to any one of claims 28 to 33, wherein: The first service is a zero-power service; and / or the first type of device is a zero-power device.

35. A communication method comprising: The second device sends the first service information to the first device; The first service information is sent by the first device to the network device through a first service session; The second device is one of one or more authorized first category devices.

36. The method according to claim 35, wherein The method further comprises: The second device receives the trigger signal sent by the first device; The second device sends response information of the trigger signal to the first device; the response information includes an identifier of the second device.

37. The method according to claim 36, wherein The trigger signal includes the first target L2 identifier.

38. The method of claim 37, wherein: The trigger signal also includes trigger related information; The trigger-related information includes at least one of the following: an identifier of the first device, trigger content-related information, and indication information authorizing the first device to be used for relay transmission.

39. The method according to claim 38, wherein The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group to which the first service belongs, a target password, and an information type that needs to be detected corresponding to the first service.

40. The method of claim 37, wherein The first target L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

41. The method according to any one of claims 37 to 40, wherein: The trigger signal further includes: a first source L2 identifier; the first source L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

42. The method according to claim 38 or 39, wherein The trigger related information is included in the signaling layer of the protocol stack of the PC5 interface, and the signaling layer is located above the MAC layer of the protocol stack of the PC5 interface.

43. The method according to any one of claims 37 to 42, wherein: The trigger signal is a physical layer signal of the protocol stack of the PC5 interface.

44. The method according to any one of claims 36 to 43, wherein: The second device sending response information of the trigger signal to the first device includes: When the second device determines that a preset condition is satisfied based on the trigger signal, the second device sends response information of the trigger signal to the first device.

45. The method of claim 44, wherein: The preset conditions include at least one of the following: The identifier-related information corresponding to the first service matches the pre-configured service-related information; wherein the identifier-related information corresponding to the first service is determined based on the first target L2 identifier and the second address mapping relationship in the trigger signal; The trigger-related information in the trigger signal matches the pre-configured service-related information.

46. ​​The method of claim 45, wherein The second address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information configured by the second device.

47. The method according to claim 45 or 46, wherein The identification-related information includes one of the following: an identification of a service, an identification of a service group, and an identification of a first-category device.

48. The method of claim 45, wherein The pre-configured service related information includes at least one of the following: an identifier of a service supported by the second device, an identifier of a service group to which the service supported by the second device belongs, an identifier of the second device, a verification password used by the second device, and an information type supported by the second device.

49. The method of claim 41, wherein The response information also includes a second target L2 identifier; the second target L2 identifier is the first target L2 identifier in the trigger signal, or the first source L2 identifier in the trigger signal.

50. The method of claim 49, wherein The response information also includes: information collected by the second device.

51. The method according to any one of claims 35 to 50, wherein: The first service is a zero-power service; and / or the first type of device is a zero-power device.

52. A first device comprising: The first communication unit is configured to receive first service information sent by the second device; and send the first service information to the network device through a session of the first service; The second device is one of one or more authorized first category devices.

53. The first device according to claim 52, wherein The first communication unit is configured to send first information including the identification of one or more first-category devices; and receive second information including the identification of the one or more authorized first-category devices.

54. The first device according to claim 53, wherein The first device further includes: A first processing unit, configured to determine, based on the one or more response information, an identifier of one or more first-category devices; and generate the first information based on the identifier of the one or more first-category devices; The first communication unit is configured to send a trigger signal and receive one or more response messages to the trigger signal.

55. The first device according to claim 54, wherein The trigger signal includes a first target layer 2 L2 identifier.

56. The first device according to claim 55, wherein The trigger signal also includes trigger related information; The trigger-related information includes at least one of the following: an identifier of the first device, trigger content-related information, and indication information of the first device for relay transmission.

57. The first device according to claim 56, wherein The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group to which the first service belongs, a target password, and an information type that the first service needs to detect.

58. The first device according to claim 57, wherein At least one of an identifier of the service group to which the first service belongs and a type of information corresponding to the first service that needs to be detected is pre-configured or configured by a network device.

59. The first device according to any one of claims 55 to 58, wherein: The first target L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

60. The first device according to claim 59, wherein The trigger signal further includes: a first source L2 identifier; the first source L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

61. The first device according to claim 56 or 57, wherein The trigger related information is included in the signaling layer of the protocol stack of the PC5 interface, and the signaling layer is located above the MAC layer of the protocol stack of the PC5 interface.

62. The first device according to any one of claims 55 to 61, wherein: The trigger signal is a physical layer signal of the protocol stack of the PC5 interface.

63. The first device according to any one of claims 55 to 58, wherein: The first processing unit is used to determine the first target layer 2 L2 identifier based on the identifier-related information corresponding to the first service and the first address mapping relationship; wherein the first address mapping relationship is pre-configured or configured by the network device.

64. The first device according to claim 63, wherein The first processing unit is configured to determine, when located in a service area of ​​the first service, identification-related information corresponding to the first service based on the service area of ​​the first service; wherein the service area of ​​the first service is pre-configured or configured by a network device.

65. The first device of claim 57, wherein The first processing unit is configured to determine the target password based on the identification-related information corresponding to the first service and a password mapping relationship; wherein the password mapping relationship is pre-configured or configured by a network device.

66. The first device according to claim 63 or 64, wherein The first address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information configured by the first device.

67. The first device according to claim 65, wherein The password mapping relationship includes: a mapping relationship between each piece of identification-related information and a password in one or more identification-related information corresponding to the first device.

68. The first device according to any one of claims 65 to 67, wherein: The identification-related information includes one of the following: an identification of a service, an identification of a service group, and an identification of a first-category device.

69. The first device of claim 54, wherein: The first processing unit is configured to send the trigger signal through the first communication unit when determining that the first processing unit is used for relay transmission based on authorization information; wherein the authorization information is pre-configured or configured by the network device.

70. The first device of claim 69, wherein The authorization information includes an indication of whether the first device is used for relay transmission.

71. The first device according to claim 69 or 70, wherein The authorization information includes: an identifier of the relay-transmitted service.

72. The first device of claim 54, wherein: The first processing unit is configured to generate the first information based on the identifications of the one or more first-category devices and the third information.

73. The first device according to claim 72, wherein The third information includes at least one of the following: information collected by the one or more first-category devices, an identifier of the first service, and indication information of completion of identity check.

74. The first device of claim 53, wherein: The first communication unit is configured to send a session establishment request after receiving the second information; wherein the session establishment request is used to request establishment of a session for the first service.

75. The first device of claim 74, wherein The session establishment request is carried by an uplink NAS transmission message.

76. The first device of claim 75, wherein The uplink NAS transmission message further carries: parameters of the first service; Among them, the parameters of the first service include at least one of the following: the data network name DNN corresponding to the first service, the single network slice selection auxiliary information S-NSSAI corresponding to the first service, and indication information of the zero-power service session.

77. The first device according to any one of claims 52 to 76, wherein: The session of the first service is: a protocol data unit (PDU) session of the first service.

78. The first device according to any one of claims 52 to 77, wherein: The first service is a zero-power service; and / or the first type of device is a zero-power device.

79. A network device comprising: The second communication unit is configured to receive first service information sent by a second device from the first device through a first service session; wherein the second device is one of one or more authorized first category devices.

80. The network device according to claim 79, wherein The network device further includes: A second processing unit is configured to determine one or more authorized first-category devices based on the first information; and generate second information based on the identification of the one or more authorized first-category devices; The second communication unit is configured to receive first information sent by the first device; the first information includes identifications of one or more first-category devices; and send second information to the first device.

81. The network device according to claim 80, wherein: The second processing unit is used to, when determining that the first device is used for relay transmission based on the authorization information corresponding to the first device, determine one or more authorized first-category devices based on the first information; wherein the authorization information corresponding to the first device includes: an indication of whether the first device is used for relay transmission.

82. The network device according to claim 80 or 81, wherein: The second processing unit is configured to determine, based on pre-configuration information, one or more authorized first-category devices from the one or more first-category devices included in the first information.

83. The network device according to claim 82, wherein: The pre-configuration information includes at least one of the following: One or more identifiers of the first category of devices permitted for authorization; One or more services, and the identifiers of one or more first-category devices permitted for authorization under each service; The information type that needs to be detected in each of one or more services.

84. The network device according to claim 79, wherein The session of the first service is: a packet data unit PDU session of the first service.

85. The network device according to any one of claims 79 to 84, wherein: The first service is a zero-power service; and / or the first type of device is a zero-power device.

86. A second device comprising: A third communication unit, configured to send first service information to the first device; The first service information is sent by the first device to the network device through a first service session; The second device is one of one or more authorized first category devices.

87. The second device according to claim 86, wherein The third communication unit is configured to receive a trigger signal sent by the first device; send response information of the trigger signal to the first device; and the response information includes an identifier of the second device.

88. The second device according to claim 87, wherein The trigger signal includes the first target L2 identifier.

89. The second device according to claim 88, wherein The trigger signal also includes trigger related information; The trigger-related information includes at least one of the following: an identifier of the first device, trigger content-related information, and indication information authorizing the first device to be used for relay transmission.

90. The second device according to claim 89, wherein The trigger content related information includes at least one of the following: an identifier of the first service, an identifier of the service group to which the first service belongs, a target password, and an information type that needs to be detected corresponding to the first service.

91. The second device according to claim 88, wherein The first target L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

92. The second device according to any one of claims 88 to 91, wherein: The trigger signal further includes: a first source L2 identifier; the first source L2 identifier is in the packet header of the MAC layer of the protocol stack of the PC5 interface.

93. The second device according to claim 89 or 90, wherein The trigger related information is included in the signaling layer of the protocol stack of the PC5 interface, and the signaling layer is located above the MAC layer of the protocol stack of the PC5 interface.

94. The second device according to any one of claims 88 to 93, wherein: The trigger signal is a physical layer signal of the protocol stack of the PC5 interface.

95. The second device according to any one of claims 87 to 94, wherein: The second device further includes: The third processing unit is configured to send response information of the trigger signal to the first device through the third communication unit when it is determined that a preset condition is satisfied based on the trigger signal.

96. The second device according to claim 95, wherein The preset conditions include at least one of the following: The identifier-related information corresponding to the first service matches the pre-configured service-related information; wherein the identifier-related information corresponding to the first service is determined based on the first target L2 identifier and the second address mapping relationship in the trigger signal; The trigger-related information in the trigger signal matches the pre-configured service-related information.

97. The second device according to claim 96, wherein The second address mapping relationship includes: a mapping relationship between each identifier-related information and an L2 identifier in one or more identifier-related information configured by the second device.

98. The second device according to claim 96 or 97, wherein The identification-related information includes one of the following: an identification of a service, an identification of a service group, and an identification of a first-category device.

99. The second device according to claim 96, wherein The pre-configured service related information includes at least one of the following: an identifier of a service supported by the second device, an identifier of a service group to which the service supported by the second device belongs, an identifier of the second device, a verification password used by the second device, and an information type supported by the second device.

100. The second device according to claim 92, wherein The response information also includes a second target L2 identifier; the second target L2 identifier is the first target L2 identifier in the trigger signal, or the first source L2 identifier in the trigger signal.

101. The second device according to claim 100, wherein The response information also includes: information collected by the second device.

102. The second device according to any one of claims 86 to 101, wherein: The first service is a zero-power service; and / or the first type of device is a zero-power device.

103. A first device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the first device executes the method according to any one of claims 1 to 27.

104. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the second device executes the method according to any one of claims 28 to 34.

105. A second device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory so as to enable the second device to perform the method as claimed in any one of claims 35 to 51.

106. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as described in any one of claims 1 to 27, or 28 to 34, or 35 to 51.

107. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method according to any one of claims 1 to 27, or 28 to 34, or 35 to 51.

108. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 27, or 28 to 34, or 35 to 51.

109. A communication system comprising: A first device, configured to perform the method according to any one of claims 1 to 27; A network device, configured to perform the method according to any one of claims 28 to 34; A second device is configured to perform the method according to any one of claims 35 to 51.

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