Industrial Internet of Things equipment control method and system based on 5G

Abstract

The present invention provides a 5G-based industrial Internet of Things device control method and system, which belongs to the field of Internet of Things technology and is used to reduce the inventory delay through the group as the granularity. The method is applied to the access network device, and the method includes: the access network device determines the inventory task of executing the group, the group includes M environmental Internet of Things A-IoT terminals, and M is an integer greater than 1; in response to the inventory task of the group, the access network device obtains the device identification of each of the M A-IoT terminals from the M A-IoT terminals, and the inventory timing of the M A-IoT terminals is concentrated, and the inventory timing of M-1 A-IoT terminals among the M A-IoT terminals is determined based on at least the inventory timing of the target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

Description

Technical Field

[0001] The present invention relates to the technical field of Internet of Things, and in particular to a 5G-based industrial Internet of Things equipment control method and system. Background Art

[0002] In today's world of rapid technological advancement, the Internet of Things (IoT) technology is gradually penetrating into every corner of social life with its powerful connectivity and wide range of applications. However, facing the large-scale deployment and widespread application of IoT devices, how to provide them with efficient, reliable and environmentally friendly energy supply has become a key bottleneck restricting their further development. As a new type of IoT device, Ambient IoT (A-IoT) provides an innovative path to solve this problem with its unique advantages and potential, and is expected to lead the IoT into a new stage of being greener, smarter and more sustainable.

[0003] A-IoT refers to a new type of IoT device that uses environmental energy (such as radio waves, light, motion, heat, etc.) for autonomous power supply. This type of device not only has the sensing, positioning, identification, control and other functions of traditional IoT devices, but also achieves low maintenance or even maintenance-free characteristics by absorbing environmental energy, significantly reducing equipment costs, simplifying the deployment process, and giving it a longer service life. The emergence of environmental IoT devices has not only broadened the application boundaries of the IoT, but also promoted the development of the IoT in a more environmentally friendly, economical, easy to deploy and maintain direction.

[0004] The A-IoT architecture can include passive terminals, readers, and servers. Passive terminals can be in the form of tags or any other terminal forms without restriction. Readers can be access network devices, such as base stations, pole stations, micro base stations, macro stations, etc. Readers use wireless radio frequency to perform non-contact two-way data communication, and use wireless radio frequency to read and write electronic tags or radio frequency cards (Tags), so as to achieve the purpose of identifying targets and exchanging data, such as obtaining tag information, that is, inventory operations (or inventory operations).

[0005] However, the current inventory operation is performed one by one on a single device. When the number of tags is large, the inventory delay is also large. Therefore, how to reduce the delay is a current research issue. Summary of the invention

[0006] The embodiments of the present invention provide a 5G-based industrial Internet of Things device control method and system, which are used to reduce the inventory delay through group granularity.

[0007] In order to achieve the above object, the present invention adopts the following technical scheme:

[0008] In a first aspect, a 5G-based industrial Internet of Things device control method is provided, which is applied to an access network device, and the method includes: the access network device determines to execute an inventory task of a group, the group includes M environmental Internet of Things A-IoT terminals, and M is an integer greater than 1; in response to the inventory task of the group, the access network device obtains device identifiers of the M A-IoT terminals from the M A-IoT terminals, and the inventory timings of the M A-IoT terminals are concentrated, and the inventory timings of M-1 A-IoT terminals among the M A-IoT terminals are determined based on at least the inventory timing of a target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

[0009] Optionally, the access network device obtains the device identification of each of the M A-IoT terminals from M A-IoT terminals, including: the access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal; at the inventory timing of the target A-IoT terminal, the access network device obtains the device identification of the target A-IoT terminal from the target A-IoT terminal; the access network device determines the inventory timing of each of the M-1 A-IoT terminals based on the inventory timing of the target A-IoT terminal; at the inventory timing of each of the M-1 A-IoT terminals, the access network device obtains the device identification of each of the M-1 A-IoT terminals from the M-1 A-Io terminals.

[0010] Optionally, the access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal, including: the access network device broadcasts a paging message, the paging message carries the respective masks of M environmental Internet of Things; the access network device receives ACKs returned by M A-IoT terminals in response to the paging messages, totaling M ACKs; the access network device determines that the A-IoT terminal that sends the target ACK is the target A-IoT terminal, and the target ACK is the first ACK among the M ACKs received by the access network device; the access network device determines the inventory timing of the target A-IoT terminal.

[0011] Optionally, the access network device determines the inventory timing of the target A-IoT terminal, including: the access network device randomly generates a random number Q, where Q is an integer greater than or equal to 1; the access network device determines a random number of 0~2^Q-1 as a count value of the target A-IoT terminal, and the count value of the target A-IoT terminal is used to indicate the inventory timing of the target A-IoT terminal; the access network device sends a query message to the target A-IoT terminal, and the query message carries the count value of the target A-IoT terminal; wherein the paging message carries an inventory session with a mask associated with the target A-IoT terminal, the inventory session indicates a session and a flag bit, and the query message also carries a session and a flag bit, and if the inventory session indicates that the session and the flag bit match the session and the flag bit carried by the query message, the target A-IoT terminal activates the count value of the target A-IoT terminal, otherwise, the target A-IoT terminal discards the count value of the target A-IoT terminal.

[0012] Optionally, the initial access network device of the count value of the target A-IoT terminal obtains the device identification of the target A-IoT terminal from the target A-IoT terminal, including: the access network device polls and sends repeated query messages, and each time the target A-IoT terminal receives a repeated query message, the target A-IoT terminal decrements the count value of the target A-IoT terminal by 1, and when the count value of the target A-IoT terminal is reduced to 0, it is the inventory timing of the target A-IoT terminal; when the count value of the target A-IoT terminal is reduced to 0, the access network device receives the RN16 of the target A-IoT terminal sent by the target A-IoT terminal; the access network device sends an ACK carrying the RN16 of the target A-IoT terminal to the target A-IoT terminal; the access network device receives the device identification of the target A-IoT terminal sent by the target A-IoT terminal.

[0013] Optionally, for the i-th A-IoT terminal among the M-1 A-IoT terminals, i is an integer traversing from 1 to M-1, the access network device determines the inventory timing of each of the M-1 A-IoT terminals according to the inventory timing of the target A-IoT terminal, including: adding X*i to the count value of the target A-IoT terminal of the access network device to determine the count value of the i-th A-IoT terminal, the count value of the i-th A-IoT terminal is used to indicate the inventory timing of the i-th A-IoT terminal, and X is an integer greater than or equal to 1; the access network device sends a Send query message #i, query message #i carries the count value of the i-th A-IoT terminal; wherein the paging message carries an inventory session #i with a mask associated with the i-th A-IoT terminal, the inventory session #i indicates the session and flag bit, and the query message #i also carries the session and flag bit. If the session and flag bit indicated by the inventory session #i match the session and flag bit carried by the query message #i, the i-th A-IoT terminal activates the count value of the i-th A-IoT terminal, otherwise, the i-th A-IoT terminal discards the count value of the i-th A-IoT terminal.

[0014] Optionally, X=1 or X=2 or X=3.

[0015] Optionally, for the i-th A-IoT terminal, the access network device obtains the device identification of each of the M-1 A-IoT terminals from the M-1 A-IoT terminals respectively, including: the access network device polls and sends repeated query messages, and when the count value of the i-th A-IoT terminal is activated, each time the i-th A-IoT terminal receives a repeated query message, the i-th A-IoT terminal decrements the count value of the i-th A-IoT terminal by 1, and when the count value of the i-th A-IoT terminal is reduced to 0, it is the inventory timing of the i-th A-IoT terminal; when the count value of the i-th A-IoT terminal is reduced to 0, the access network device receives the RN16 of the i-th A-IoT terminal sent by the i-th A-IoT terminal; the access network device sends an ACK carrying the RN16 of the i-th A-IoT terminal to the i-th A-IoT terminal; the access network device receives the device identification of the i-th A-IoT terminal sent by the i-th A-IoT terminal.

[0016] Optionally, the access network device determines to execute the inventory task of the group, including: the access network device receives an Nx message from the A-IoT network function, the Nx message carries the group identifier and the respective masks of the M A-IoT terminals, to indicate a request to execute the inventory task of the group; the access network device determines to execute the inventory task of the group according to the Nx message.

[0017] In a second aspect, a 5G-based industrial Internet of Things device control system is provided, the system includes an access network device, and the system is configured as follows: the access network device determines to execute an inventory task of a group, the group includes M environmental Internet of Things A-IoT terminals, and M is an integer greater than 1; in response to the inventory task of the group, the access network device obtains the device identification of each of the M A-IoT terminals from the M A-IoT terminals, wherein the inventory timing of the M A-IoT terminals is concentrated, and the inventory timing of M-1 A-IoT terminals among the M A-IoT terminals is determined based on at least the inventory timing of the target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

[0018] Optionally, the access network device obtains the device identification of each of the M A-IoT terminals from M A-IoT terminals, including: the access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal; at the inventory timing of the target A-IoT terminal, the access network device obtains the device identification of the target A-IoT terminal from the target A-IoT terminal; the access network device determines the inventory timing of each of the M-1 A-IoT terminals based on the inventory timing of the target A-IoT terminal; at the inventory timing of each of the M-1 A-IoT terminals, the access network device obtains the device identification of each of the M-1 A-IoT terminals from the M-1 A-Io terminals.

[0019] Optionally, the access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal, including: the access network device broadcasts a paging message, the paging message carries the respective masks of M environmental Internet of Things; the access network device receives ACKs returned by M A-IoT terminals in response to the paging messages, totaling M ACKs; the access network device determines that the A-IoT terminal that sends the target ACK is the target A-IoT terminal, and the target ACK is the first ACK among the M ACKs received by the access network device; the access network device determines the inventory timing of the target A-IoT terminal.

[0020] Optionally, the access network device determines the inventory timing of the target A-IoT terminal, including: the access network device randomly generates a random number Q, where Q is an integer greater than or equal to 1; the access network device determines a random number of 0~2^Q-1 as a count value of the target A-IoT terminal, and the count value of the target A-IoT terminal is used to indicate the inventory timing of the target A-IoT terminal; the access network device sends a query message to the target A-IoT terminal, and the query message carries the count value of the target A-IoT terminal; wherein the paging message carries an inventory session with a mask associated with the target A-IoT terminal, the inventory session indicates a session and a flag bit, and the query message also carries a session and a flag bit, and if the inventory session indicates that the session and the flag bit match the session and the flag bit carried by the query message, the target A-IoT terminal activates the count value of the target A-IoT terminal, otherwise, the target A-IoT terminal discards the count value of the target A-IoT terminal.

[0021] Optionally, the initial access network device of the count value of the target A-IoT terminal obtains the device identification of the target A-IoT terminal from the target A-IoT terminal, including: the access network device polls and sends repeated query messages, and each time the target A-IoT terminal receives a repeated query message, the target A-IoT terminal decrements the count value of the target A-IoT terminal by 1, and when the count value of the target A-IoT terminal is reduced to 0, it is the inventory timing of the target A-IoT terminal; when the count value of the target A-IoT terminal is reduced to 0, the access network device receives the RN16 of the target A-IoT terminal sent by the target A-IoT terminal; the access network device sends an ACK carrying the RN16 of the target A-IoT terminal to the target A-IoT terminal; the access network device receives the device identification of the target A-IoT terminal sent by the target A-IoT terminal.

[0022] Optionally, for the i-th A-IoT terminal among the M-1 A-IoT terminals, i is an integer traversing from 1 to M-1, the access network device determines the inventory timing of each of the M-1 A-IoT terminals according to the inventory timing of the target A-IoT terminal, including: adding X*i to the count value of the target A-IoT terminal of the access network device to determine the count value of the i-th A-IoT terminal, the count value of the i-th A-IoT terminal is used to indicate the inventory timing of the i-th A-IoT terminal, and X is an integer greater than or equal to 1; the access network device sends a Send query message #i, query message #i carries the count value of the i-th A-IoT terminal; wherein the paging message carries an inventory session #i with a mask associated with the i-th A-IoT terminal, the inventory session #i indicates the session and flag bit, and the query message #i also carries the session and flag bit. If the session and flag bit indicated by the inventory session #i match the session and flag bit carried by the query message #i, the i-th A-IoT terminal activates the count value of the i-th A-IoT terminal, otherwise, the i-th A-IoT terminal discards the count value of the i-th A-IoT terminal.

[0023] Optionally, X=1 or X=2 or X=3.

[0024] Optionally, for the i-th A-IoT terminal, the access network device obtains the device identification of each of the M-1 A-IoT terminals from the M-1 A-IoT terminals respectively, including: the access network device polls and sends repeated query messages, and when the count value of the i-th A-IoT terminal is activated, each time the i-th A-IoT terminal receives a repeated query message, the i-th A-IoT terminal decrements the count value of the i-th A-IoT terminal by 1, and when the count value of the i-th A-IoT terminal is reduced to 0, it is the inventory timing of the i-th A-IoT terminal; when the count value of the i-th A-IoT terminal is reduced to 0, the access network device receives the RN16 of the i-th A-IoT terminal sent by the i-th A-IoT terminal; the access network device sends an ACK carrying the RN16 of the i-th A-IoT terminal to the i-th A-IoT terminal; the access network device receives the device identification of the i-th A-IoT terminal sent by the i-th A-IoT terminal.

[0025] Optionally, the access network device determines to execute the inventory task of the group, including: the access network device receives an Nx message from the A-IoT network function, the Nx message carries the group identifier and the respective masks of the M A-IoT terminals, to indicate a request to execute the inventory task of the group; the access network device determines to execute the inventory task of the group according to the Nx message.

[0026] In a third aspect, an electronic device is provided, comprising: a processor and a memory; the memory is used to store a computer program, and when the processor executes the computer program, the electronic device executes the method described in the first aspect.

[0027] In a possible design solution, the electronic device described in the third aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the electronic device described in the third aspect to communicate with other electronic devices.

[0028] In an embodiment of the present invention, the electronic device described in the third aspect may be a terminal, or a chip (system) or other parts or components that may be arranged in the terminal, or a system including the terminal.

[0029] In a fourth aspect, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are executed on a computer, the computer is caused to execute the method described in the first aspect.

[0030] In summary, the above method and device have the following technical effects:

[0031] For group inventory tasks, such as taking inventory of M A-IoT terminals, the access network device can use the inventory timing of the first terminal to be inventoried among the M A-IoT terminals as a reference to determine the inventory timing of the remaining M-1 A-IoT terminals, so that the inventory timing of the M A-IoT terminals is concentrated, thereby reducing the overall delay for the access network device to obtain the device identifications of the M A-IoT terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the architecture of an industrial Internet of Things device control system based on 5G provided in an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of a flow chart of a 5G-based industrial Internet of Things device control method provided in an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described below in conjunction with the accompanying drawings.

[0036] In the embodiment of the present invention, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0037] In addition, the specific indication method may also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can refer to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, different indication methods may be used for different information. In the specific implementation process, the desired indication method can be selected according to specific needs. The embodiment of the present invention does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present invention should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0038] It should be understood that the information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiment of the present invention. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the sending end device by sending configuration information to the receiving end device.

[0039] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present invention do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or an electronic device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or an electronic device. The type of memory can be any form of storage medium, which is not limited by the embodiments of the present invention.

[0040] The "protocol" involved in the embodiments of the present invention may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol applied in future systems, and the embodiments of the present invention do not specifically limit this.

[0041] In the embodiments of the present invention, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances, but do not limit the time, nor do they require the device to perform judgment actions when implementing, nor do they mean the existence of other limitations.

[0042] In the description of the embodiments of the present invention, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the embodiments of the present invention is only a kind of association relationship describing the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the embodiments of the present invention, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present invention, in the embodiments of the present invention, the words "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will appreciate that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. At the same time, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0043] The network architecture and business scenarios described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

[0044] To facilitate understanding of the embodiments of the present invention, first Figure 1 Taking the 5G-based industrial IoT device control system shown in as an example, Figure 1 A schematic diagram of the architecture of a 5G-based industrial Internet of Things device control system applicable to the 5G-based industrial Internet of Things device control method provided in an embodiment of the present invention.

[0045] like Figure 1 As shown, the 5G-based industrial Internet of Things equipment control system may include: M A-IoT terminals and access network equipment.

[0046] A-IoT terminals may include Internet of Things (IoT) devices such as tags, passive tags, active tags, semi-active tags, sensors, electric meters, water meters, etc., and may also be unmanned aerial vehicles (UAVs) with communication functions. When the A-IoT terminal is a passive or semi-active terminal or tag, it can obtain energy to receive or send data. Energy can be obtained through radio, solar energy, light energy, wind energy, water energy, thermal energy, kinetic energy, etc. This application does not limit the way passive or semi-active terminals obtain energy. The embodiments of this application do not limit this. It should be noted that the tags involved in this application may be in the form of tags, or they may be in any terminal form.

[0047] The access network device may support a reader function and may also be considered a reader. The access network device may specifically be a next generation mobile communication system, or in the next generation mobile communication system, the network device may also have other naming methods, which are all included in the protection scope of the embodiments of the present application, and the present application does not impose any restrictions on this. Alternatively, the network device may also include 5G, such as a gNB in ​​a new radio (NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in 5G, or a network node constituting a gNB, a transmission point (transmission and reception point, TRP or transmission point, TP) or a transmission measurement function (transmission measurement function, TMF), such as a centralized unit (central unit, CU), a distributed unit (distributed unit, DU), a CU-control plane (control plane, CP), a CU-user plane (user plane, UP), or a radio unit (radio unit, RU), an RSU with a base station function, or a wired access gateway, or a 5G core network element, etc. Alternatively, the network devices may also include: access points (APs) in WiFi systems, wireless relay nodes, wireless backhaul nodes, various forms of macro base stations, micro base stations (also called small stations), relay stations, access points, wearable devices, vehicle-mounted devices, etc.

[0048] CU and DU may be separately configured, or may be included in the same network element, such as a baseband unit (BBU). RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It is understood that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, CU may be divided into a network device in an access network RAN, or CU may be divided into a network device in a core network CN, without limitation. In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art may understand their meanings. For example, in an ORAN system, CU may also be referred to as O-CU (open CU), DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. For the convenience of description, this application takes CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit in the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. In the embodiment of the present application, the form of the network device is not limited. The device for implementing the function of the network device may be a network device; it may also be a device that can support the network device to implement the function, such as a chip system. The device can be installed in a network device or used in combination with a network device.

[0049] Figure 2 A flowchart of the method provided by an embodiment of the present invention. The 5G-based industrial IoT device controller is applicable to the above-mentioned 5G-based industrial IoT device control system, involving the interaction between the access network device and the A-IoT terminal. The specific process is as follows:

[0050] S201: The access network device determines an inventory task to be performed by the group.

[0051] The group includes M A-IoT terminals, where M is an integer greater than 1. The M A-IoT terminals are usually located within the same physical area, such as the physical area that can be covered by a cell of an access network device.

[0052] For example, the access network device receives an Nx message from the A-IoT network function (A-IoTMF), and the Nx message carries the identifier of the group and the masks of the M A-IoT terminals to indicate a request to execute the inventory task of the group. The Nx message can be any possible message. The A-IoTMF can receive an inventory request from the AF, and the inventory request can carry the identifier of the group and the masks of the M A-IoT terminals, and can also carry the above-mentioned physical area range information. The A-IoTMF can determine, based on the information of the physical area range, that the physical area range is served by a certain access network device, and thus send an Nx message to the access network device. Accordingly, the access network device can determine, based on the Nx message, to execute the inventory task of the group.

[0053] S202, in response to the inventory task of the group, the access network device obtains the device identification of each of the M A-IoT terminals from the M A-IoT terminals.

[0054] The inventory timing of M A-IoT terminals is concentrated. The inventory timing of M-1 A-IoT terminals among the M A-IoT terminals is determined based on at least the inventory timing of the target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

[0055] Specifically, S202 includes the following steps:

[0056] S1: The access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal.

[0057] The access network device first broadcasts a paging message. The paging message carries the masks of the M ambient IoTs. The masks are used to select the A-IoT terminal. If the A-IoT terminal receives the paging message and determines that the mask in the paging message matches its own mask, it determines that the paging message is paging itself, so it can continue with the subsequent process, such as returning ACK. Otherwise, no response is made and no subsequent process is performed.

[0058] The access network device can then receive ACKs returned by M A-IoT terminals for each paging message, for a total of M ACKs. In other words, the M A-IoT terminals can continue the subsequent process based on mask matching, that is, feedback ACK to indicate that they have received the paging. It can be understood that this is different from the random access process of A-IoT defined by existing standards. In the process defined by existing standards, the A-IoT terminal does not respond to the paging message, and the access network device continues to send query messages. However, the A-IoT terminal of the present application needs to respond so that the access network device can determine the access timing of the A-IoT terminal, or the inventory timing.

[0059] The access network device determines that the A-IoT terminal that sends the target ACK is the target A-IoT terminal. The target ACK is the first ACK among the M ACKs received by the access network device, that is, the first A-IoT terminal corresponding to the ACK is determined as the target A-IoT terminal.

[0060] The access network device can finally determine the inventory timing of the target A-IoT terminal. For example, the access network device randomly generates a random number Q, where Q is an integer greater than or equal to 1; the access network device determines the random number from 0 to 2^Q-1 as the count value of the target A-IoT terminal, and the count value of the target A-IoT terminal is used to indicate the inventory timing of the target A-IoT terminal. For example, the target A-IoT terminal is A-IoT terminal #1, Q=3, 0~2^Q-1 is 0~4, and 3 is randomly selected as the count value of A-IoT terminal #1, that is, Counter=3. After determining the count value of the target A-IoT terminal, the access network device can send a query message to the target A-IoT terminal. The query message carries the count value of the target A-IoT terminal, which is different from the process defined by the existing standard. In the process defined by the existing standard, the query message carries the above-mentioned Q value, which is used by the A-IoT terminal to determine a random number from 0 to 2^Q-1 as the count value based on the Q value. However, this application requires the access network device to determine the access timing for the group. Therefore, the access network device is required to determine the count value of each A-IoT terminal in an orderly manner and return it to each A-IoT terminal through a query message.

[0061] The above-mentioned paging message also carries a masked inventory session (inventerySession) associated with the target A-IoT terminal. The inventory session indicates the session (session) and the flag bit (action). If the session is Sa and the action is 1, the query message also carries the session and the flag bit. If the session and the flag bit indicated by the inventory session match the session and the flag bit carried by the query message, the target A-IoT terminal activates the count value of the target A-IoT terminal. Otherwise, the target A-IoT terminal discards the count value of the target A-IoT terminal.

[0062] S2: At the inventory timing of the target A-IoT terminal, the access network device obtains the device identification of the target A-IoT terminal from the target A-IoT terminal.

[0063] The access network device can poll and send repeated query (QueryRep) messages. Each repeated query indicates the next access opportunity, or inventory opportunity, that is, the end of the previous inventory opportunity and the beginning of the next inventory opportunity. Each time the target A-IoT terminal receives a repeated query message, the target A-IoT terminal decrements the count value of the target A-IoT terminal by 1 (completed when the count value of the target A-IoT terminal is in the activated state). When the count value of the target A-IoT terminal is reduced to 0, it is the inventory opportunity of the target A-IoT terminal. For example, in the above example, the count value of A-IoT terminal #1 = 3. When A-IoT terminal #1 receives the repeated query message for the third time, A-IoT terminal #1 decrements the count value to 0. At this time, the next inventory opportunity indicated by the repeated query message is the inventory opportunity of A-IoT terminal #1. Therefore, when the count value of the target A-IoT terminal is reduced to 0, the target A-IoT terminal sends RN16 to the access network device, and the access network device receives the RN16 sent by the target A-IoT terminal; RN16 is a 16-bit random number used for contention resolution. The access network device sends an ACK carrying the RN16 of the target A-IoT terminal to the target A-IoT terminal, indicating that the contention resolution is successful. If only one RN16 is received, the ACK is returned. Accordingly, the target A-IoT terminal can discover the device identity (EPC) of the target A-IoT terminal to the access network device based on the ACK carrying the RN16 of the target A-IoT terminal. Accordingly, the access network device receives the device identity of the target A-IoT terminal sent by the target A-IoT terminal. At this point, the target A-IoT terminal is successfully inventoried.

[0064] S3: The access network device determines the inventory timing of each of the M-1 A-IoT terminals according to the inventory timing of the target A-IoT terminal.

[0065] For the i-th A-IoT terminal among M-1 A-IoT terminals, i is an integer traversing from 1 to M-1. The count value of the target A-IoT terminal of the access network device plus X*i is determined as the count value of the i-th A-IoT terminal. The count value of the i-th A-IoT terminal is used to indicate the inventory timing of the i-th A-IoT terminal. X is an integer greater than or equal to 1, such as X=1 or X=2 or X=3.

[0066] The access network device sends a query message #i to the i-th A-IoT terminal, and the query message #i carries the count value of the i-th A-IoT terminal. Among them, the paging message carries an inventory session #i with a mask associated with the i-th A-IoT terminal, the inventory session #i indicates the session and flag bits, and the query message #i also carries the session and flag bits. If the session and flag bits indicated by the inventory session #i match the session and flag bits carried by the query message #i, the i-th A-IoT terminal activates the count value of the i-th A-IoT terminal, otherwise, the i-th A-IoT terminal discards the count value of the i-th A-IoT terminal. That is, unlike the existing standard process, the access network device can send the count value of each A-IoT terminal to the A-IoT terminal in the query message of the A-IoT terminal to achieve orderly and low-latency inventory.

[0067] S4: At the respective inventory timings of the M-1 A-IoT terminals, the access network device obtains the respective device identifications of the M-1 A-IoT terminals from the M-1 A-IoT terminals respectively.

[0068] For the i-th A-IoT terminal, the access network device polls and sends repeated query messages. When the count value of the i-th A-IoT terminal is activated, each time the i-th A-IoT terminal receives a repeated query message, the i-th A-IoT terminal decrements the count value of the i-th A-IoT terminal by 1. When the count value of the i-th A-IoT terminal is reduced to 0, it is the inventory timing of the i-th A-IoT terminal; therefore, when the count value of the i-th A-IoT terminal is reduced to 0, the i-th A-IoT terminal sends the RN16 of the i-th A-IoT terminal to the access network device, and accordingly, the access network device receives the RN16 of the i-th A-IoT terminal sent by the i-th A-IoT terminal. When the contention is resolved successfully, the access network device sends an ACK carrying the RN16 of the i-th A-IoT terminal to the i-th A-IoT terminal, so that the i-th A-IoT terminal returns the device identification of the i-th A-IoT terminal. Correspondingly, the access network device receives the device identification of the i-th A-IoT terminal sent by the i-th A-IoT terminal. At this point, the i-th A-IoT terminal is successfully inventoried.

[0069] It can be understood that when X=1, the inventory timings of every two A-IoT terminals in the group are adjacent, for example, the first query message triggers the inventory of the first A-IoT terminal, the next query message triggers the inventory of the second A-IoT terminal, the next query message triggers the inventory of the third A-IoT terminal, and so on. When X=2 / 3, there are 1-2 inventory timings between the inventory timings of every two A-IoT terminals in the group, for example, the first query message triggers the inventory of the first A-IoT terminal, the 3rd and 4th query messages trigger the inventory of the second A-IoT terminal, the 5th / 7th query messages trigger the inventory of the third A-IoT terminal, and so on. The advantage of this is that the inventory timings in between can be used for other inventory services, avoiding the group's inventory occupying too long a continuous period of time, which causes a large delay in other inventories.

[0070] It can also be understood that the inventory opportunities of every two A-IoT terminals in the group are adjacent, or the inventory opportunities of every two A-IoT terminals in the group are separated by 1-2 inventory opportunities, which can be understood as the inventory opportunities of M A-IoT terminals are concentrated.

[0071] In summary, for group inventory tasks, such as taking inventory of M A-IoT terminals, the access network device can use the inventory timing of the first inventory terminal among the M A-IoT terminals as a reference to determine the inventory timing of the remaining M-1 A-IoT terminals, so that the inventory timing of the M A-IoT terminals is concentrated, thereby reducing the overall delay for the access network device to obtain the device identifications of the M A-IoT terminals.

[0072] Combination of the above Figure 2 The method provided by the embodiment of the present invention is described in detail. The following is a detailed description of a 5g-based industrial Internet of Things device control system for executing the method provided by the embodiment of the present invention.

[0073] The 5G-based industrial Internet of Things device control system includes an access network device, which is configured as follows: the access network device determines to execute an inventory task of a group, the group includes M environmental Internet of Things A-IoT terminals, and M is an integer greater than 1; in response to the inventory task of the group, the access network device obtains the device identification of each of the M A-IoT terminals from the M A-IoT terminals, wherein the inventory timing of the M A-IoT terminals is concentrated, and the inventory timing of M-1 A-IoT terminals among the M A-IoT terminals is determined based on at least the inventory timing of the target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

[0074] Optionally, the access network device obtains the device identification of each of the M A-IoT terminals from M A-IoT terminals, including: the access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal; at the inventory timing of the target A-IoT terminal, the access network device obtains the device identification of the target A-IoT terminal from the target A-IoT terminal; the access network device determines the inventory timing of each of the M-1 A-IoT terminals based on the inventory timing of the target A-IoT terminal; at the inventory timing of each of the M-1 A-IoT terminals, the access network device obtains the device identification of each of the M-1 A-IoT terminals from the M-1 A-Io terminals.

[0075] Optionally, the access network device determines the target A-IoT terminal and determines the inventory timing of the target A-IoT terminal, including: the access network device broadcasts a paging message, the paging message carries the respective masks of M environmental Internet of Things; the access network device receives ACKs returned by M A-IoT terminals in response to the paging messages, totaling M ACKs; the access network device determines that the A-IoT terminal that sends the target ACK is the target A-IoT terminal, and the target ACK is the first ACK among the M ACKs received by the access network device; the access network device determines the inventory timing of the target A-IoT terminal.

[0076] Optionally, the access network device determines the inventory timing of the target A-IoT terminal, including: the access network device randomly generates a random number Q, where Q is an integer greater than or equal to 1; the access network device determines a random number of 0~2^Q-1 as a count value of the target A-IoT terminal, and the count value of the target A-IoT terminal is used to indicate the inventory timing of the target A-IoT terminal; the access network device sends a query message to the target A-IoT terminal, and the query message carries the count value of the target A-IoT terminal; wherein the paging message carries an inventory session with a mask associated with the target A-IoT terminal, the inventory session indicates a session and a flag bit, and the query message also carries a session and a flag bit, and if the inventory session indicates that the session and the flag bit match the session and the flag bit carried by the query message, the target A-IoT terminal activates the count value of the target A-IoT terminal, otherwise, the target A-IoT terminal discards the count value of the target A-IoT terminal.

[0077] Optionally, the initial access network device of the count value of the target A-IoT terminal obtains the device identification of the target A-IoT terminal from the target A-IoT terminal, including: the access network device polls and sends repeated query messages, and each time the target A-IoT terminal receives a repeated query message, the target A-IoT terminal decrements the count value of the target A-IoT terminal by 1, and when the count value of the target A-IoT terminal is reduced to 0, it is the inventory timing of the target A-IoT terminal; when the count value of the target A-IoT terminal is reduced to 0, the access network device receives the RN16 of the target A-IoT terminal sent by the target A-IoT terminal; the access network device sends an ACK carrying the RN16 of the target A-IoT terminal to the target A-IoT terminal; the access network device receives the device identification of the target A-IoT terminal sent by the target A-IoT terminal.

[0078] Optionally, for the i-th A-IoT terminal among the M-1 A-IoT terminals, i is an integer traversing from 1 to M-1, the access network device determines the inventory timing of each of the M-1 A-IoT terminals according to the inventory timing of the target A-IoT terminal, including: adding X*i to the count value of the target A-IoT terminal of the access network device to determine the count value of the i-th A-IoT terminal, the count value of the i-th A-IoT terminal is used to indicate the inventory timing of the i-th A-IoT terminal, and X is an integer greater than or equal to 1; the access network device sends a Send query message #i, query message #i carries the count value of the i-th A-IoT terminal; wherein the paging message carries an inventory session #i with a mask associated with the i-th A-IoT terminal, the inventory session #i indicates the session and flag bit, and the query message #i also carries the session and flag bit. If the session and flag bit indicated by the inventory session #i match the session and flag bit carried by the query message #i, the i-th A-IoT terminal activates the count value of the i-th A-IoT terminal, otherwise, the i-th A-IoT terminal discards the count value of the i-th A-IoT terminal.

[0079] Optionally, X=1 or X=2 or X=3.

[0080] Optionally, for the i-th A-IoT terminal, the access network device obtains the device identification of each of the M-1 A-IoT terminals from the M-1 A-IoT terminals respectively, including: the access network device polls and sends repeated query messages, and when the count value of the i-th A-IoT terminal is activated, each time the i-th A-IoT terminal receives a repeated query message, the i-th A-IoT terminal decrements the count value of the i-th A-IoT terminal by 1, and when the count value of the i-th A-IoT terminal is reduced to 0, it is the inventory timing of the i-th A-IoT terminal; when the count value of the i-th A-IoT terminal is reduced to 0, the access network device receives the RN16 of the i-th A-IoT terminal sent by the i-th A-IoT terminal; the access network device sends an ACK carrying the RN16 of the i-th A-IoT terminal to the i-th A-IoT terminal; the access network device receives the device identification of the i-th A-IoT terminal sent by the i-th A-IoT terminal.

[0081] Optionally, the access network device determines to execute the inventory task of the group, including: the access network device receives an Nx message from the A-IoT network function, the Nx message carries the group identifier and the respective masks of the M A-IoT terminals, to indicate a request to execute the inventory task of the group; the access network device determines to execute the inventory task of the group according to the Nx message.

[0082] Figure 3 The schematic diagram of the structure of the electronic device provided by the embodiment of the present invention. For example, the electronic device may be a network device, or a chip (system) or other components or assemblies that can be set in the network device. Figure 3 As shown, the electronic device 400 may include a processor 401. Optionally, the electronic device 400 may further include a memory 402 and / or a transceiver 403. The processor 401 is coupled with the memory 402 and the transceiver 403, such as being connected via a communication bus.

[0083] Combine the following Figure 3 The components of the electronic device 400 are described in detail:

[0084] The processor 401 is the control center of the electronic device 400, and may be a processor or a general term for multiple processing elements. For example, the processor 401 is one or more central processing units (CPUs), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (FPGAs).

[0085] Optionally, the processor 401 can execute various functions of the electronic device 400 by running or executing the software program stored in the memory 402 and calling the data stored in the memory 402, such as executing the above Figure 2 The 5G-based industrial IoT device control method shown.

[0086] In a specific implementation, as an embodiment, the processor 401 may include one or more CPUs, such as Figure 3 CPU0 and CPU1 are shown in FIG.

[0087] In a specific implementation, as an embodiment, the electronic device 400 may also include multiple processors. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0088] The memory 402 is used to store the software program for executing the solution of the present invention, and the execution is controlled by the processor 401. The specific implementation method can refer to the above method embodiment, which will not be repeated here.

[0089] Optionally, the memory 402 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 402 may be integrated with the processor 401, or may exist independently and access the computer through the interface circuit ( Figure 3 The processor 401 is coupled to the processor 401 (not shown), which is not specifically limited in this embodiment of the present invention.

[0090] The transceiver 403 is used for communication with other electronic devices. For example, if the electronic device 400 is a terminal, the transceiver 403 can be used to communicate with a network device, or with another terminal device. For another example, if the electronic device 400 is a network device, the transceiver 403 can be used to communicate with a terminal, or with another network device.

[0091] Optionally, the transceiver 403 may include a receiver and a transmitter ( Figure 3 The receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0092] Optionally, the transceiver 403 may be integrated with the processor 401, or may exist independently and communicate with the electronic device 400 through an interface circuit ( Figure 3 The processor 401 is coupled to the processor 401 (not shown), which is not specifically limited in this embodiment of the present invention.

[0093] Understandably, Figure 3 The structure of the electronic device 400 shown in the figure does not constitute a limitation on the electronic device, and the actual electronic device may include more or fewer components than those shown in the figure, or combine certain components, or arrange the components differently.

[0094] In addition, the technical effects of the electronic device 400 can refer to the technical effects of the methods described in the above method embodiments, which will not be repeated here.

[0095] It should be understood that the processor in the embodiment of the present invention may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0096] It should also be understood that the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, 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), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0097] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented by software, the above embodiments 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 or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0098] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0099] In the present invention, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0100] It should be understood that in various embodiments of the present invention, 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 invention.

[0101] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0102] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0103] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0104] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0105] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0106] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0107] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A 5G-based industrial Internet of Things device control method, characterized in that: The method is applied to an access network device, and the method comprises: The access network device determines to execute an inventory task of a group, where the group includes M ambient Internet of Things A-IoT terminals, where M is an integer greater than 1; In response to the inventory task of the group, the access network device obtains the device identification of each of the M A-IoT terminals from the M A-IoT terminals, the inventory timing of the M A-IoT terminals is concentrated, the inventory timing of M-1 A-IoT terminals among the M A-IoT terminals is determined based on at least the inventory timing of the target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

2. The method according to claim 1, characterized in that The access network device obtains the device identifications of the M A-IoT terminals from the M A-IoT terminals, including: The access network device determines the target A-IoT terminal, and determines an inventory timing of the target A-IoT terminal; At the inventory timing of the target A-IoT terminal, the access network device obtains the device identification of the target A-IoT terminal from the target A-IoT terminal; The access network device determines the inventory timing of each of the M-1 A-IoT terminals according to the inventory timing of the target A-IoT terminal; At the respective inventory timings of the M-1 A-IoT terminals, the access network device obtains the respective device identifications of the M-1 A-IoT terminals from the M-1 A-IoT terminals respectively.

3. The method according to claim 2, characterized in that The access network device determines the target A-IoT terminal and determines an inventory timing of the target A-IoT terminal, including: The access network device broadcasts a paging message, where the paging message carries the masks of the M environmental Internet of Things; The access network device receives ACKs returned by the M A-IoT terminals for the paging message, a total of M ACKs; The access network device determines that the A-IoT terminal that sends the target ACK is the target A-IoT terminal, and the target ACK is the first ACK among the M ACKs received by the access network device; The access network device determines an inventory timing for the target A-IoT terminal.

4. The method according to claim 3, characterized in that The access network device determines the inventory timing of the target A-IoT terminal, including: The access network device randomly generates a random number Q, where Q is an integer greater than or equal to 1; The access network device determines a random number of 0 to 2^Q-1 as a count value of the target A-IoT terminal, and the count value of the target A-IoT terminal is used to indicate an inventory timing of the target A-IoT terminal; The access network device sends a query message to the target A-IoT terminal, where the query message carries a count value of the target A-IoT terminal; The paging message carries an inventory session with a mask associated with the target A-IoT terminal, the inventory session indicates a session and a flag bit, and the query message also carries a session and a flag bit. If the inventory session indicates that the session and the flag bit match the session and the flag bit carried by the query message, the target A-IoT terminal activates the count value of the target A-IoT terminal; otherwise, the target A-IoT terminal discards the count value of the target A-IoT terminal.

5. The method according to claim 4, characterized in that The initial access network device of the count value of the target A-IoT terminal obtains the device identifier of the target A-IoT terminal from the target A-IoT terminal, including: The access network device polls and sends repeated query messages. Each time the target A-IoT terminal receives a repeated query message, the target A-IoT terminal decrements the count value of the target A-IoT terminal by 1. When the count value of the target A-IoT terminal is reduced to 0, it is the inventory timing of the target A-IoT terminal. When the count value of the target A-IoT terminal is reduced to 0, the access network device receives RN16 sent by the target A-IoT terminal to the target A-IoT terminal; The access network device sends an ACK carrying RN16 of the target A-IoT terminal to the target A-IoT terminal; The access network device receives the device identification of the target A-IoT terminal sent by the target A-IoT terminal.

6. The method according to claim 4, characterized in that For the i-th A-IoT terminal among the M-1 A-IoT terminals, where i is an integer traversing from 1 to M-1, the access network device determines the inventory timing of each of the M-1 A-IoT terminals according to the inventory timing of the target A-IoT terminal, including: The count value of the target A-IoT terminal of the access network device plus X*i is determined as the count value of the i-th A-IoT terminal, and the count value of the i-th A-IoT terminal is used to indicate the inventory timing of the i-th A-IoT terminal, where X is an integer greater than or equal to 1; The access network device sends a query message #i to the i-th A-IoT terminal, where the query message #i carries a count value of the i-th A-IoT terminal; Among them, the paging message carries an inventory session #i with a mask associated with the i-th A-IoT terminal, the inventory session #i indicates the session and flag bit, and the query message #i also carries the session and flag bit. If the session and flag bit indicated by the inventory session #i match the session and flag bit carried by the query message #i, the i-th A-IoT terminal activates the count value of the i-th A-IoT terminal, otherwise, the i-th A-IoT terminal discards the count value of the i-th A-IoT terminal.

7. The method according to claim 6, characterized in that X=1 or X=2 or X=3.

8. The method according to claim 6 or 7, characterized in that: For the i-th A-IoT terminal, the access network device obtains the device identifications of the M-1 A-IoT terminals from the M-1 A-IoT terminals respectively, including: The access network device polls and sends repeated query messages. When the count value of the i-th A-IoT terminal is activated, each time the i-th A-IoT terminal receives a repeated query message, the i-th A-IoT terminal decrements the count value of the i-th A-IoT terminal by 1. When the count value of the i-th A-IoT terminal is reduced to 0, it is the inventory timing of the i-th A-IoT terminal. When the count value of the i-th A-IoT terminal is reduced to 0, the access network device receives the RN16 sent by the i-th A-IoT terminal to the i-th A-IoT terminal; The access network device sends an ACK carrying RN16 of the i-th A-IoT terminal to the i-th A-IoT terminal; The access network device receives the device identification of the i-th A-IoT terminal sent by the i-th A-IoT terminal.

9. The method according to claim 1, characterized in that: The access network device determines to execute an inventory task of the group, including: The access network device receives an Nx message from the A-IoT network function, where the Nx message carries an identifier of the group and a mask of each of the M A-IoT terminals, indicating a request to execute an inventory task of the group; The access network device determines to execute the inventory task of the group according to the Nx message.

10. A 5G-based industrial Internet of Things equipment control system, characterized in that: The system includes an access network device, and the system is configured as follows: The access network device determines to execute an inventory task of a group, where the group includes M ambient Internet of Things A-IoT terminals, where M is an integer greater than 1; In response to the inventory task of the group, the access network device obtains the device identification of each of the M A-IoT terminals from the M A-IoT terminals, wherein the inventory timing of the M A-IoT terminals is concentrated, and the inventory timing of M-1 A-IoT terminals among the M A-IoT terminals is determined based on at least the inventory timing of the target A-IoT terminal, the target A-IoT terminal is the first terminal to be inventoried among the M A-IoT terminals, and the M-1 A-IoT terminals are other terminals among the M A-IoT terminals except the target A-IoT terminal.

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