Power station FTU looped network establishment method and system based on 5G slices

Abstract

The invention relates to the technical field of data transmission, and provides a power station FTU looped network establishment method and system based on 5G slices. The head FTU device broadcasts a first application message to all FTU devices in the broadcastable area; wherein the first application message carries an identifier of a connectable base station, and the identifier of the connectable base station is the identifier of one 5G base station connected with the head FTU equipment; when the FTU equipment meets a first joining condition corresponding to the first application message, establishing a first target ZigBee ring network between the head FTU equipment and the FTU equipment; wherein the first joining condition is that the FTU equipment is connected with the 5G base station corresponding to the connectable base station identifier. According to the invention, the network bandwidth occupation is optimized, and the problem that the overall bandwidth occupation of each FTU device is too high is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of data transmission, and particularly to a method and system for establishing a power station FTU ring network based on 5G slicing. Background Art

[0002] In order to promote the intelligent and efficient management of distribution in the substation area and reduce the intensity of traditional operation and maintenance, in the intelligent Internet of Things system, a fusion distribution terminal is often used to upload service data to the Internet of Things platform. As an edge device in the intelligent Internet of Things system, the fusion distribution terminal is responsible for information collection in the distribution substation area (for example, the load condition of the transformer, voltage and current parameters of the transmission line, etc.), uploading and receiving data, and edge computing (for example, processing and analyzing the collected data locally), etc., and can monitor the operation status of the substation area in real time, providing strong support for fault judgment and data display of the distribution network in the substation area. The fusion distribution terminal has high reliability and stability, can meet the requirements of complex power environments, and supports multiple communication methods such as Ethernet, micro-power wireless, and the fifth generation mobile communication technology (5th Generation Mobile Networks or 5th Generation Wireless Systems, abbreviated as 5G), and can flexibly respond to different network environments to achieve two-way data transmission, reducing the intensity of traditional operation and maintenance of the distribution network. The fusion distribution terminal can be a distribution transformer monitoring terminal unit (abbreviated as TTU), a switchgear terminal device (abbreviated as DTU), a feeder terminal unit (abbreviated as FTU), etc.

[0003] In the prior art, for multiple distribution fusion terminals in the substation area, during the 5G communication process, when the distribution fusion terminals are all FTU devices, each FTU device often independently applies for a 5G slice, establishes a communication tunnel, and uses each communication tunnel to transmit its own data respectively. However, for each FTU device, except for the alarm data that must be reported in real time, other collected data (for example, the monitoring data of the transformer) only needs to be reported periodically and does not need to be reported in real time. Therefore, the amount of data required to be transmitted by each FTU device is uncertain and changes in real time. In order to ensure the reporting speed, the prior art reserves corresponding bandwidth for each FTU device according to the peak value of the amount of data required to be transmitted in real time by each FTU device. When the FTU device only reports alarm data, its bandwidth occupancy still remains at a high level, resulting in too high overall bandwidth occupancy for each FTU device and a large waste of communication resources.

[0004] In view of this, overcoming the defects existing in the prior art is an urgent problem to be solved in the technical field. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method and system for establishing a power station FTU ring network based on 5G slices. The purpose is to establish a ZigBee ring network among multiple FTU devices, so that the subsequent ZigBee ring network can be used to enable multiple FTU devices to jointly apply for 5G slices, share communication tunnels for data reporting, and optimize the occupation of network bandwidth, greatly reducing the waste of communication resources, and solving the problem that when the FTU device only reports alarm data, its bandwidth occupation still remains at a relatively high level, resulting in an overly high overall bandwidth occupation for each FTU device.

[0006] The present invention adopts the following technical solutions: In a first aspect, the present invention provides a method for establishing a power station FTU ring network based on 5G slices. The method for establishing a power station FTU ring network based on 5G slices is applied to a substation area, and the substation area includes multiple FTU devices. A head FTU device is determined from the multiple FTU devices. The method for establishing a power station FTU ring network based on 5G slices includes: The head FTU device broadcasts a first application message to all FTU devices within the broadcastable area; wherein, the first application message carries an identifiable base station identifier, and the identifiable base station identifier is: the identifier of one of the 5G base stations connected by the head FTU device; When the FTU device meets the first joining condition corresponding to the first application message, a first target ZigBee ring network is established between the head FTU device and the FTU device; wherein, the first joining condition is: the FTU device is connected to the 5G base station corresponding to the identifiable base station identifier.

[0007] Further, the step of "when the FTU device meets the first joining condition corresponding to the first application message, a first target ZigBee ring network is established between the head FTU device and the FTU device" includes: The FTU device receives the first application message, determines the first joining condition according to the first application message. When the FTU device meets the first joining condition, the FTU device returns a connection response message to the head FTU device; wherein, the connection response message carries the device identifier of the FTU device; When the head FTU device receives the connection response message, the head FTU device establishes a first initial ZigBee network; The head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, allocates network resources for the FTU device, and adds the FTU device to the first initial ZigBee network to establish a first target ZigBee ring network.

[0008] Further, the head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, allocates network resources for the FTU device, and adding the FTU device to the first initial ZigBee network to establish a first target ZigBee ring network includes: The head FTU device receives the connection response messages sent by the FTU devices in the broadcastable area in the order of signal strength from strong to weak; The head FTU device obtains the device identifier of the FTU device from the connection response message to determine the FTU device; allocates a network short address for the FTU device to add the FTU device to the first initial ZigBee network; The FTU device updates the configuration information according to the network short address, so as to communicate in the first target ZigBee ring network according to the configuration information.

[0009] Further, it further includes: When the FTU device does not meet the first joining condition, the FTU device broadcasts a ring network establishment request to all FTU devices in the broadcastable area as a non-joinable device; wherein, the ring network establishment request carries the sending time of the ring network establishment request and the signal direction; Each FTU device in the broadcastable area obtains the sending time of the received ring network establishment request and the receiving time of the received ring network establishment request; determines the signal transceiver delay of the non-joinable device by taking the difference between the receiving time and the sending time; determines the device position of the non-joinable device in the signal direction according to the signal transceiver delay and the signal propagation speed; The FTU devices in the broadcastable area obtain at least one 5G base station to which they are connected, plan alternative 5G base stations for the non-joinable device according to the device position from the at least one 5G base station, and notify the planned alternative 5G base stations to the non-joinable device to respond to the ring network establishment request; The non-joinable device obtains at least one alternative 5G base station, determines the alternative 5G base station closest to itself as the target 5G base station from the at least one alternative 5G base station, and forms a second target ZigBee ring network based on the target 5G base station.

[0010] Further, the non - joinable device acquires at least one alternative 5G base station, determines the alternative 5G base station closest to itself as the target 5G base station from the at least one alternative 5G base station, and forming a second target ZigBee ring network based on the target 5G base station includes: The non - joinable device generates a second application message carrying the identifier of the target 5G base station, and broadcasts the second application message to all FTU devices within the broadcastable area; The FTU devices within the broadcastable area acquire the identifier of the target 5G base station from the second application message, and when it only meets the second joining condition, it returns a first joining message to the FTU device; wherein, the second joining condition is that the corresponding FTU device is connected to the target 5G base station; when it has not joined the first target ZigBee ring network and meets both the first joining condition and the second joining condition at the same time, it returns a second joining message to the FTU device; The non - joinable device establishes a second initial ZigBee network, the non - joinable device receives the first joining message, and adds the corresponding FTU device to the second initial ZigBee network to establish a second target ZigBee ring network; The non - joinable device receives the second joining message, takes the FTU device corresponding to the second joining message as a device to be allocated, and selectively adds the device to be allocated to the second target ZigBee ring network or the first target ZigBee ring network.

[0011] Further, the non - joinable device receives the second joining message, takes the FTU device corresponding to the second joining message as a device to be allocated, and selectively adds the device to be allocated to the second target ZigBee ring network or the first target ZigBee ring network includes: The non - joinable device acquires the data volume to be reported by each FTU device in the first target ZigBee ring network in the current cycle, and determines the sum of all the first data volumes to be reported as the first ring network total; The non - joinable device acquires the data volume to be reported by each FTU device in the second target ZigBee ring network in the current cycle, and determines the sum of all the second data volumes to be reported as the second ring network total; The non - joinable device determines the sum of the data volume to be reported by the device to be allocated in the current cycle and the first ring network total as the first estimated total; when the difference between the first estimated total and the second ring network total is less than a preset value, it is determined to add the device to be allocated to the first target ZigBee ring network; The non-addable device determines the sum of the data volume to be reported by the device to be allocated in the current cycle and the total second ring network volume as the second estimated total volume; when the difference between the second estimated total volume and the first ring network total volume is less than a preset value, it is determined to add the device to be allocated to the second target ZigBee ring network.

[0012] Further, after establishing the first target ZigBee ring network between the head FTU device and the FTU device when the FTU device meets the first joining condition corresponding to the first application message, it further includes: Determine the network role of the head FTU device in the first target ZigBee ring network as the primary coordinator; Select an FTU device from the first target ZigBee ring network, and determine the network role of the selected FTU device as the standby coordinator of the first target ZigBee ring network; When the primary coordinator cannot connect to the corresponding 5G base station, switch the standby coordinator to a new primary coordinator; The new primary coordinator creates a new target ZigBee ring network.

[0013] Further, after establishing the first target ZigBee ring network between the head FTU device and the FTU device when the FTU device meets the first joining condition corresponding to the first application message, it further includes: The head FTU device generates a third application message carrying the connectable base station identifier, and regularly broadcasts the third application message to all FTU devices within the broadcastable area; The FTU device receives the third application message, and when it has not joined the first target ZigBee ring network and meets the first joining condition, returns a connection response message to the head FTU device; The head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, and adds the corresponding FTU device to the first target ZigBee ring network.

[0014] In a second aspect, the present invention further provides a power station FTU ring network establishment device based on a 5G slice, including: At least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the processor to perform the method for establishing a power station FTU ring network based on a 5G slice described in the first aspect.

[0015] In a third aspect, the present invention further provides a non-volatile computer storage medium storing computer-executable instructions that are executed by one or more processors to complete the method for establishing a power station FTU ring network based on 5G slices described in the first aspect.

[0016] In a fourth aspect, there is provided a computer program product containing instructions that, when run on a computer or a processor, cause the computer or the processor to execute the method for establishing a power station FTU ring network based on 5G slices as described in the first aspect.

[0017] In a fifth aspect, the present invention further provides a system for establishing a power station FTU ring network based on 5G slices, including a device for establishing a power station FTU ring network based on 5G slices as described in the third aspect, and using the method for establishing a power station FTU ring network based on 5G slices as described in the first aspect to complete the interaction of the device for establishing a power station FTU ring network based on 5G slices described in the third aspect.

[0018] Different from the prior art, the present invention has at least the following beneficial effects: Since FTU devices are often installed in substations to monitor transformers and report monitoring data, the positions of each FTU device are in a state of remaining unchanged for a long time, and the 5G base stations connectable to the FTU devices also remain unchanged for a long time. The various monitoring data that each FTU device needs to report within each reporting cycle do not change frequently. Therefore, the present invention uses a ZigBee network to aggregate the FTU devices connected to the same 5G base station within the broadcastable area of the substation, so as to facilitate subsequent unified application for 5G slices and multiplexing of communication tunnels based on each ZigBee network. Since the types of multiple FTU devices within the broadcastable range are often the same, the data to be reported is similar, and the bandwidth occupied does not vary too much. By enabling multiple FTU devices to jointly apply for 5G slices and share communication tunnels for data reporting, for multiple FTU devices within a ZigBee network, when the bandwidth occupied by some FTU devices is relatively low, there are often some FTU devices with relatively high bandwidth occupancy. This avoids each FTU device continuously and individually occupying a high bandwidth, thereby achieving the purpose of optimizing the overall bandwidth occupancy of the network, greatly reducing the waste of communication resources, and solving the problem that when FTU devices only report alarm data, their bandwidth occupancy still remains at a high level, resulting in an overly high overall bandwidth occupancy for each FTU device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments of the present invention. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic flowchart of a method for establishing a power station FTU ring network based on 5G slices provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of a specific example of a first target ZigBee ring network provided by an embodiment of the present invention; Figure 3 It is a schematic flowchart of step 20 provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a specific example of a broadcastable area provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of a specific example of information interaction between a head FTU device, FTU device 1, and FTU device 2 provided by an embodiment of the present invention; Figure 6 It is a schematic flowchart of step 203 provided by an embodiment of the present invention; Figure 7 It is a schematic flowchart of a second method for establishing a power station FTU ring network based on 5G slices provided by an embodiment of the present invention; Figure 8 It is a schematic flowchart of step 304 provided by an embodiment of the present invention; Figure 9 It is a schematic flowchart of a method for establishing a power station FTU ring network based on 5G slices provided by an embodiment of the present invention; Figure 10 It is a schematic diagram of another specific example of a first target ZigBee ring network provided by an embodiment of the present invention; Figure 11 It is a schematic diagram of a specific example of a second target ZigBee ring network provided by an embodiment of the present invention; Figure 12 It is a schematic diagram of a specific example of other FTU devices joining the first target ZigBee ring network provided by an embodiment of the present invention; Figure 13 It is a schematic diagram of the architecture of a device for establishing a power station FTU ring network based on 5G slices provided by an embodiment of the present invention. Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, i.e., "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples", etc. are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the above-mentioned embodiments or examples due to reasons such as the order of appearance and position, etc., but it does not limit that they can be carried by one embodiment or example in a combined manner.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0024] In the description of the present invention, the terms "first", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "third" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, for example, in the description, for the same type of nouns, the method of adding "A", "B" at the end is used to describe them as two independent individuals. In this case, the features defined with "A", "B" are only used for the purpose of distinguishing the same type of individuals and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0025] In describing some embodiments, the expressions "coupled", "coupling", "connected" and their derivatives may be used. For example, in describing some embodiments, the term "connected" may be used to indicate that two or more components have direct physical contact or electrical contact with each other. Also, for example, in describing some embodiments, the term "coupled" may be used to indicate that two or more components have direct physical contact or electrical contact. However, the terms "connected" or "coupled" may also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other, such as "optical path coupling", "wireless connection", etc. The embodiments disclosed herein are not necessarily limited to the content of the present invention.

[0026] In the description of the present invention, the expression "A and / or B" (where A and B are used to formally represent specific feature contents) is involved, and the corresponding expression includes the following three combinations: only A, only B, and the combination of A and B.

[0027] As used in the present invention, "about", "substantially" or "approximate" includes the stated value and the average value within an acceptable deviation range of the specific value, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurement being discussed and the error associated with the measurement of the specific quantity (i.e., the limitations of the measurement system).

[0028] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Embodiment 1: To solve the above problems, as Figure 1 shown, an embodiment of the present invention provides a method for establishing a power station FTU ring network based on 5G slices. The method for establishing a power station FTU ring network based on 5G slices is applied to a substation area, and the substation area includes a plurality of FTU devices. A head FTU device is determined from the plurality of FTU devices. The method for establishing a power station FTU ring network based on 5G slices includes: Step 10: The head FTU device broadcasts a first application message to all FTU devices within the broadcastable area; wherein, the first application message carries an identifiable connected base station, and the identifiable connected base station is: the identifier of one of the 5G base stations connected by the head FTU device.

[0030] Among them, the head FTU device is used to establish a ZigBee network, and the method for determining the head FTU device among the plurality of FTU devices is determined by those skilled in the art according to the specific usage scenario. The ZigBee network is suitable for communication between a plurality of FTU devices with a short transmission range and a low data transmission rate.

[0031] Among them, within the broadcastable area, except for the head FTU device, all FTU devices can communicate with the head FTU device. That is, all FTU devices within the broadcastable area can receive the first application message sent by the head FTU device; the broadcastable area is determined by those skilled in the art according to the specific usage scenario. In an optional embodiment, the broadcastable area can be: a range centered on the head FTU device and within a certain value of the distance between the head FTU device and it.

[0032] In one embodiment, after the FTU device successfully accesses the corresponding 5G base station, it sends an access message to the 5G base station, and the device identifier of the FTU device and the cell global identifier (NR Cell Global Identifier, abbreviated as: NCGI) are carried in the access message; among them, the NCGI is obtained by the FTU device by listening to the system information block type 1 (System Information Block Type 1, abbreviated as SIB1) message broadcast by the 5G base station during the process of accessing the 5G base station. That is, the 5G base station broadcasts the SIB1 message regularly. After the surrounding FTU devices receive the SIB1 message, they obtain the NCGI from the SIB1 message and use the obtained NCGI to request access to the 5G base station; for a region, it can be understood that a 5G base station has a unique NCGI. Before the FTU device has not registered the 5G network and applied for the 5G slice, multiple FTU devices within the broadcastable area can use low-speed bandwidth for message transmission through the 5G base station. For example, the first application message is transmitted.

[0033] Step 20: When the FTU device meets the first joining condition corresponding to the first application message, a first target ZigBee ring network is established between the head FTU device and the FTU device; among them, the first joining condition is: the FTU device is connected to the 5G base station corresponding to the connectable base station identifier.

[0034] Among them, when the FTU device establishes a 5G signal connection with the 5G base station, the signal strength of the corresponding 5G signal is within the corresponding effective range.

[0035] After the FTU device receives the broadcast first application message, it will analyze whether the identifier of the 5G base station connected to itself is the same as the identifier of the 5G base station in the first application message. Only the FTU device that meets the first joining condition will be added by the head FTU device to the first target ZigBee ring network. Since the purpose of establishing the ZigBee network in the embodiment of the present invention is to enable multiple FTU devices to share a communication tunnel for monitoring data reporting, in order to be able to reuse the communication tunnel, these multiple FTU devices must be connected to the same 5G base station, so that the FTU devices in the subsequent ZigBee ring network can apply for 5G slices, etc. to the same 5G base station.

[0036] In the embodiment of the present invention, a ZigBee network is first established. By adding multiple routers and terminal device nodes and configuring the routing relationships between them, a ring network structure can be formed for the ZigBee network; full peer-to-peer communication can be achieved between each node (i.e., the FTU device), and each node can communicate with other nodes within its wireless communication range without the need for forwarding by other FTU devices.

[0037] Such as Figure 2 shown is a specific example of the first target ZigBee ring network; it should be noted that Figure 2 the monitoring master station and the transformer are not shown in [the figure]. One end of each power feed line is connected to the corresponding FTU device, and the other end is connected to the transformer monitored by the FTU device. In one embodiment, the first target ZigBee ring network includes: a plurality of power feed lines, a plurality of FTU devices, a ZigBee channel, and a General Packet Radio Service (GPRS) channel. Among them, each power feed line is connected to each FTU device in one-to-one correspondence; each FTU device is connected end to end through the ZigBee channel to form a ring topology structure, and each FTU device is connected end to end through the GPRS channel to form a ring topology structure. In the ZigBee ring network, each FTU device communicates with each other through the ZigBee channel or the GPRS channel. In one embodiment, automatic switching can be achieved between the ZigBee channel and the GPRS channel; specifically, when the corresponding communication signal attenuates too much during transmission, the communication signal is automatically transmitted through the ZigBee channel; when an obstacle is encountered during the transmission of the communication signal, the communication signal is automatically transmitted through the GPRS channel. Among them, the ZigBee channel can self-organize with relatively low complexity, low power consumption, and low cost, and the connection cost of the GPRS channel is low, the transmission rate is high, and the access time is short.

[0038] Since FTU devices are often installed in substations to monitor transformers and report the monitoring data, the location of each FTU device remains unchanged for a long time, and the 5G base stations that the FTU devices can connect to also remain unchanged for a long time. The various monitoring data that the FTU devices need to report in each reporting cycle do not change frequently. Therefore, the present invention uses a ZigBee network to aggregate the FTU devices connected to the same 5G base station within the broadcastable area of the substation, so as to facilitate subsequent unified application for 5G slices and multiplexing of communication tunnels based on each ZigBee network as a basic unit. Since the types of multiple FTU devices within the broadcastable range are often the same, the data to be reported is similar, and the bandwidth occupied does not vary too much. By enabling multiple FTU devices to jointly apply for 5G slices and share communication tunnels for data reporting, for multiple FTU devices within a ZigBee network, when the bandwidth occupied by some FTU devices is relatively low, there are often some FTU devices that occupy a relatively high bandwidth, avoiding each FTU device continuously and individually occupying a relatively high bandwidth, thereby achieving the purpose of optimizing the overall network bandwidth occupancy, greatly reducing the waste of communication resources, and solving the problem that when the FTU device only reports alarm data, its bandwidth occupancy still remains at a relatively high level, resulting in an overly high overall bandwidth occupancy for each FTU device.

[0039] In the embodiment of the present invention, by establishing a ZigBee network, when subsequent FTU devices need to apply for 5G slices, establish communication tunnels, and report monitoring data, multiple FTU devices within the same ZigBee network can negotiate internally.

[0040] Specifically, as Figure 3 shown, step 20 includes: Step 201: The FTU device receives the first application message, determines the first joining condition according to the first application message. When the FTU device meets the first joining condition, the FTU device returns a connection response message to the head FTU device; wherein, the connection response message carries the device identifier of the FTU device.

[0041] Because the distribution density of 5G base stations is relatively high, the distribution interval between 5G base stations may be between 200 meters and 500 meters. To ensure the full coverage of 5G signals, in some high-density areas, such as commercial centers or transportation hubs, the distribution interval of 5G base stations will be shorter, for example, 100 meters; so as Figure 4As shown in the figure, there are often multiple FTU devices within the broadcastable area. For example, there are 10 FTU devices in the broadcastable area, among which 9 FTU devices can establish a 5G signal connection with the same 5G base station, and 1 FTU device can establish a 5G signal connection with another 5G base station. When the connectable base station identifier carried in the first application message is one of the 5G base stations, if among these 10 FTU devices, an FTU device determines that it is also connected to this 5G base station after receiving the first application message, it returns a connection response message to the head FTU device.

[0042] Step 202: When the head FTU device receives the connection response message, the head FTU device establishes a first initial ZigBee network.

[0043] As Figure 5 shown in the figure, when the head FTU device receives a connection response message, it indicates that there is an FTU device within the broadcastable area that can share the communication tunnel with the head FTU device for monitoring data reporting. Therefore, a first target ZigBee ring network can be formed with this FTU device; when forming the first target ZigBee ring network, first, the network role of the head FTU device is determined as the coordinator, and then the head FTU device establishes a first initial ZigBee network, including allocating a network identifier, determining a communication channel, etc. Among them, in the ZigBee network, the network roles of each FTU device include: coordinator, router, and end device; the coordinator is responsible for initializing and maintaining the ZigBee network and is the core node of the entire ZigBee network; the router is responsible for helping to expand the network coverage and forwarding data packets in the ZigBee network; the end device is a device that only interacts with the ZigBee network and does not forward data packets in the ZigBee network.

[0044] In one embodiment, the head FTU device selects a communication channel and establishes a first initial ZigBee network, obtains the network identifier of this first initial ZigBee network, and determines its own (i.e., the head FTU device) network address as 0x0000.

[0045] Step 203: The head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, allocates network resources for the FTU device, so as to add the FTU device to the first initial ZigBee network and establish a first target ZigBee ring network.

[0046] After the first initial ZigBee network is established, FTU devices other than the head FTU device can request to join this first initial ZigBee network.

[0047] In an alternative embodiment, the head FTU device may determine the distance between the corresponding FTU device and itself according to the signal strength of the received connection response message, and sequentially add the FTU devices corresponding to the connection response messages to the first initial ZigBee network in the order of decreasing signal strength, gradually establishing the first target ZigBee ring network; specifically, as Figure 6 shown, step 203 includes: Step 2031: The head FTU device receives the connection response messages sent by the FTU devices in the broadcastable area in the order of decreasing signal strength.

[0048] Step 2032: The head FTU device obtains the device identifier of the FTU device from the connection response message to determine the FTU device; assigns a network short address to the FTU device to add the FTU device to the first initial ZigBee network.

[0049] Step 2033: The FTU device updates the configuration information according to the network short address, so as to communicate in the first target ZigBee ring network according to the configuration information.

[0050] Among them, the network short address is the unique identifier of the FTU device in the ZigBee network; in one embodiment, the network short address may be a 16-bit network address; the configuration information may be the configuration information of the FTU device in the routing table of the first target ZigBee ring network.

[0051] In one embodiment, the head FTU device sequentially receives the connection response messages, assigns a network role and a network short address to the FTU device that sends the connection response message, returns the network short address to the FTU device for confirmation and recording, and then completes adding the FTU device to the first initial ZigBee network; subsequently, the FTU device can use the network short address as its own unique identifier to forward data packets in the first target ZigBee ring network according to the configuration information, so as to communicate with other FTU devices in the first target ZigBee ring network.

[0052] While the primary coordinator establishes the first target ZigBee ring network, there are very likely to be FTU devices in the broadcastable area that do not meet the first joining condition. In order to enable this part of the FTU devices to also optimize the bandwidth occupancy by establishing a ZigBee network, as Figure 7 shown, the method for establishing a power station FTU ring network based on 5G slices further includes: Step 301: When the FTU device does not meet the first joining condition, the FTU device broadcasts a ring network establishment request as a non-joinable device to all FTU devices within the broadcastable area; wherein, the ring network establishment request carries the sending time of the ring network establishment request and the signal direction.

[0053] Since the FTU devices in the first target ZigBee ring network can be connected to multiple 5G base stations, in addition to the 5G base station to which all the FTU devices in the first target ZigBee ring network are connected, there may also be other 5G base stations in the broadcastable area connected to each FTU device in the broadcastable area. To optimize communication resource allocation, the FTU device that does not meet the first joining condition broadcasts a ring network establishment request to the FTU devices in the broadcastable area to obtain other 5G base stations in the broadcastable area, so as to establish another ZigBee network with the FTU devices connected to the same 5G in the subsequent use.

[0054] In one embodiment, each ring network establishment request may carry the following information: device number: used to uniquely identify the non-joinable device; 5G signal strength: indicating that the non-joinable device can access the 5G network; the sending time of the ring network establishment request, and the signal direction of the non-joinable device relative to the FTU device receiving the ring network establishment request.

[0055] Step 302: Each FTU device in the broadcastable area obtains the sending time of the received ring network establishment request and the receiving time of the received ring network establishment request; determines the signal transceiver delay of the non-joinable device by taking the difference between the receiving time and the sending time; and determines the device position of the non-joinable device in the signal direction according to the signal transceiver delay and the signal propagation speed.

[0056] Among them, all FTU devices in the broadcastable area receive the ring network establishment request, and each received ring network establishment request will carry the sending time and signal direction corresponding to the ring network establishment request; for each FTU device in the first target ZigBee ring network, the signal propagation speed is: the signal propagation speed for communication between the FTU device itself and the non-joinable device.

[0057] In one embodiment, since the FTU device that receives the ring network establishment request can obtain the sending time and signal direction, it can calculate the product of the signal transceiver delay and the signal propagation speed to obtain the straight-line distance between itself and the non-joinable device in the signal direction where the non-joinable device is located, and then determine the device position of the non-joinable device.

[0058] Step 303: The FTU devices within the broadcastable area obtain at least one 5G base station to which they are connected, plan alternative 5G base stations for the non-joinable devices from the at least one 5G base station according to the device locations, and notify the planned alternative 5G base stations to the non-joinable devices to respond to the ring network establishment request.

[0059] Within the broadcastable area, there are likely to be multiple FTU devices connected to 5G base stations other than (i.e., in addition to the 5G base station corresponding to the first target ZigBee ring network). For example, the FTU device that receives the ring network establishment request is connected to 5G Base Station 1, 5G Base Station 2, and 5G Base Station 3. In an embodiment of the present invention, these FTU devices plan alternative 5G base stations for the non-joinable devices. Specifically, the FTU devices within the broadcastable area select the 5G base stations located near the device location of the non-joinable device from the at least one 5G base station to which they are connected as alternative 5G base stations and notify the non-joinable device; for example, since the distances between 5G Base Station 2 and 5G Base Station 3 and the device location are both within a certain value, 5G Base Station 2 and 5G Base Station 3 are selected as alternative 5G base stations, and the corresponding identifiers are sent to the non-joinable device.

[0060] Step 304: The non-joinable device obtains at least one alternative 5G base station, determines the alternative 5G base station closest to itself from the at least one alternative 5G base station as the target 5G base station, and forms a second target ZigBee ring network based on the target 5G base station.

[0061] Since the non-joinable device in the embodiment of the present invention selects the target 5G base station from multiple alternative 5G base stations planned by each FTU device within the broadcastable area, it can ensure that at least one FTU device within the broadcastable area is connected to the target 5G base station, and then a second target ZigBee ring network can be formed together. And since the FTU devices within the broadcastable area plan alternative 5G base stations according to the device locations, each alternative 5G base station is close to the location of the non-joinable device, and thus the finally determined target 5G base station is close to the location of the non-joinable device, which is beneficial for as many FTU devices near the non-joinable device that have not joined or cannot join the first target ZigBee ring network to jointly form a second target ZigBee ring network; especially when the distance between the non-joinable device and the 5G base station corresponding to the first target ZigBee ring network is relatively close, more FTU devices that have not joined or cannot join the first target ZigBee ring network can jointly apply for 5G slices and share communication tunnels for data reporting through the ZigBee network, realizing further optimization of network bandwidth occupancy.

[0062] For example, when the currently available 5G base stations that cannot be added to the device plan for each FTU device are: 5G base station 1, 5G base station 2, and 5G base station 3, the non-addable device selects the 5G base station 1 closest to it as the target 5G base station, and subsequently forms a second target ZigBee ring network together with the FTU devices connected to the target 5G base station.

[0063] As Figure 4 shown, there can be many FTU devices within the broadcastable area. For example, there are 10 FTU devices within the broadcastable area, among which 6 FTU devices can establish 5G signal connections with the same 5G base station, and 4 FTU devices can establish 5G signal connections with another 5G base station (i.e., other 5G base stations). When these 6 FTU devices are already in the first target ZigBee ring network, the other 4 FTU devices form a second target ZigBee ring network. Specifically, as Figure 8 shown, step 304 includes: Step 3041: The non-addable device generates a second application message carrying the identifier of the target 5G base station, and broadcasts the second application message to all FTU devices within the broadcastable area.

[0064] For example, the second application message carries the identifier of 5G base station 1.

[0065] Step 3042: The FTU devices within the broadcastable area obtain the identifier of the target 5G base station from the second application message, and when they only meet the second joining condition, they return a first joining message to the FTU device; where the second joining condition is that the corresponding FTU device is connected to the target 5G base station; when they have not joined the first target ZigBee ring network and at the same time meet the first joining condition and the second joining condition, they return a second joining message to the FTU device.

[0066] For example, in the case where the FTU devices in the first target ZigBee ring network are all connected to 5G base station 2, when the FTU device within the broadcastable area is only connected to this 5G base station 1, it only meets the second joining condition, and returns a first joining message to this FTU device to apply to form a second target ZigBee ring network together. When the FTU device within the broadcastable area has not joined the first target ZigBee ring network and is simultaneously connected to this 5G base station 1 and 5G base station 2, it meets the first joining condition and the second joining condition at the same time, and returns a second joining message to this FTU device to inform this FTU device that it can form a second target ZigBee ring network together, and it is up to this FTU device to determine whether to form the second target ZigBee ring network together.

[0067] Step 3043: The non-joinable device establishes a second initial ZigBee network. The non-joinable device receives the first join message and adds the corresponding FTU device to the second initial ZigBee network to establish a second target ZigBee ring network.

[0068] For the FTU devices within the broadcastable area, when they only meet the second join condition, it means that there is only one 5G base station they are connected to, and it is the same as the 5G base station the non-joinable device is connected to. Therefore, they can only join the second target ZigBee ring network subsequently and cannot join the first target ZigBee ring network.

[0069] For this non-joinable device, as long as it receives a first join message, it means that there is at least one FTU device that can form a second target ZigBee ring network with it.

[0070] Step 3044: The non-joinable device receives the second join message, takes the FTU device corresponding to the second join message as the device to be allocated, and selectively adds the device to be allocated to the second target ZigBee ring network or the first target ZigBee ring network.

[0071] For the FTU devices within the broadcastable area, when they have not joined the first target ZigBee ring network and meet both the first join condition and the second join condition at the same time, it means that there are at least two 5G base stations they are connected to. One of the connected 5G base stations is the same as the 5G base station corresponding to the first target ZigBee ring network, and the other is the same as the 5G base station the non-joinable device is connected to. Therefore, they can join the second target ZigBee ring network or the first target ZigBee ring network subsequently. So, they are taken as the devices to be allocated, and a more suitable target ZigBee ring network for them to join is further planned.

[0072] For example, there are 10 FTU devices within the broadcastable area. Among them, 6 FTU devices can establish 5G signal connections with the same 5G base station, 1 FTU device can establish 5G signal connections with another 5G base station, and the remaining 3 FTU devices can establish 5G signal connections with both of the above two 5G base stations.

[0073] Figure 4 As shown, since there are often multiple transformers arranged in a substation, some of the FTU devices are only connected to one 5G base station, some are only connected to another 5G base station, and the remaining middle part of the FTU devices are connected to both of the above two 5G base stations. At this time, for these two 5G base stations, two ZigBee networks need to be established respectively to make the communication data volume between the subsequent devices and each 5G base station relatively balanced, so as to better optimize the network bandwidth and allocate communication resources.

[0074] The head FTU device will initiate a broadcast in order to form the first target ZigBee ring network, and the non-joinable device will initiate a broadcast in order to form the second target ZigBee ring network. When the FTU devices within the broadcastable area respond to the broadcast, they will return corresponding messages to the two devices. The two devices will process the received messages in order of signal strength from strong to weak to add each FTU device to the corresponding ZigBee network. In the embodiment of the present invention, taking the non-joinable device processing the message returned by the device to be allocated as an example, the process of joining the second initial ZigBee network is described.

[0075] In an alternative embodiment, the non-joinable device obtains the data volume to be reported by each FTU device in the first target ZigBee ring network in the current cycle, and determines the sum of all the first data volumes to be reported as the first ring network total. Among them, each FTU device in the first target ZigBee ring network refers to all FTU devices that have joined the first target ZigBee ring network. Among them, the data volume to be reported by each FTU device in the current cycle is not necessarily the same, and is determined by those skilled in the art according to the specific usage scenario of the FTU device, and is not limited herein. The non-joinable device obtains the data volume to be reported by each FTU device in the second target ZigBee ring network in the current cycle, and determines the sum of all the second data volumes to be reported as the second ring network total. Among them, each FTU device in the second target ZigBee ring network refers to all FTU devices that have joined the second target ZigBee ring network. The non-joinable device determines the sum of the data volume to be reported by the device to be allocated in the current cycle and the first ring network total as the first estimated total; when the difference between the first estimated total and the second ring network total is less than a preset value, it is determined to add the device to be allocated to the first target ZigBee ring network; among them, the preset value is selected by those skilled in the art according to the specific usage scenario. The first estimated total is used to estimate: after adding the device to be allocated to the first target ZigBee ring network, the data volume to be reported by all FTU devices that have joined the first target ZigBee ring network in the current cycle; the difference between the first estimated total and the second ring network total is less than the preset value, indicating that after adding the device to be allocated to the first target ZigBee ring network, the difference between the total data volumes to be reported by the first target ZigBee ring network and the second target ZigBee ring network in the current cycle is relatively small, and the communication data volume between the subsequent 5G base stations corresponding to the first target ZigBee ring network and the second target ZigBee ring network is relatively balanced. Therefore, it is determined to add the device to be allocated to the first target ZigBee ring network. The non-joinable device determines the sum of the data volume to be reported by the device to be allocated in the current cycle and the second ring network total as the second estimated total; when the difference between the second estimated total and the first ring network total is less than a preset value, it is determined to add the device to be allocated to the second target ZigBee ring network.The second predicted total amount is used for prediction: after adding the device to be allocated to the second target ZigBee ring network, the data volume to be reported by all FTU devices that have been added to the second target ZigBee ring network in the current cycle; the difference between the second predicted total amount and the first ring network total amount is less than the preset value, indicating that after adding the device to be allocated to the second target ZigBee ring network, the difference between the total data volume to be reported by the first target ZigBee ring network and the second target ZigBee ring network in the current cycle is relatively small, and the communication data volume between the subsequent 5G base stations corresponding to the first target ZigBee ring network and the second target ZigBee ring network is relatively balanced. Therefore, it is determined to add the device to be allocated to the second target ZigBee ring network.

[0076] In the embodiments of the present invention, by comparing the data volume that needs to be transmitted by the added FTU devices, in a competitive environment, the data volume that needs to be transmitted by the two ZigBee networks is made to reach an equilibrium state as much as possible, thereby making the resource occupancy situation of the communication tunnel good. Since the cost required to apply for establishing each communication tunnel is relatively high, the embodiments of the present invention make as many FTU devices occupy fewer communication tunnels as possible to amortize the cost of creating communication tunnels.

[0077] When it is confirmed in the embodiments of the present invention that the FTU device that does not meet the first addition condition and the 5G signal of another 5G base station meet the signal strength condition (that is, it can be connected to the 5G base station), in the broadcast received from the head FTU device, a ring network establishment request based on the other 5G base station is initiated, that is, a second application message is broadcast in the broadcastable area to establish a new ZigBee network.

[0078] After the first target ZigBee ring network is established, when the connection between the primary coordinator and the 5G base station fails, such as Figure 9 shown, after the step 20, it further includes: Step 401: Determine the network role of the head FTU device in the first target ZigBee ring network as the primary coordinator.

[0079] Step 402: Select an FTU device from the first target ZigBee ring network, and determine the network role of the selected FTU device as the standby coordinator of the first target ZigBee ring network.

[0080] For example, as Figure 10 shown, in the first target ZigBee ring network, there are a primary coordinator (that is, the head FTU device), a standby coordinator (that is, FTU device 2), FTU device 3, FTU device 4, and FTU device 5; all FTU devices in the first target ZigBee ring network are connected to 5G base station 2; the head FTU device cannot be connected to 5G base station 2.

[0081] Step 403: When the primary coordinator fails to connect to the corresponding 5G base station, switch the standby coordinator to the new primary coordinator.

[0082] Step 404: The new primary coordinator creates a new target ZigBee ring network.

[0083] Among them, the process of the new primary coordinator creating a new target ZigBee ring network is the same as the process of the head FTU device establishing the first target ZigBee ring network, which will not be elaborated here.

[0084] For example, as Figure 11 shown, use the standby coordinator of the first target ZigBee ring network as the primary coordinator to create a new second initial ZigBee network.

[0085] For example, the standby coordinator of the first target ZigBee ring network obtains the information required to establish the second initial ZigBee network from FTU device 3, FTU device 4, and FTU device 5 to obtain the second target ZigBee ring network as Figure 11 shown.

[0086] The FTU devices in the first target ZigBee ring network can perform network communication by sending and receiving messages to transmit the information required to create the new second target ZigBee ring network (for example, the identifiers of each FTU device). A specific example of a ZigBee data frame structure is shown in Table 1 below.

[0087] Table 1 Specific example of ZigBee data frame structure

[0088] In one embodiment, each FTU device can send messages in broadcast mode.

[0089] Since after the first target ZigBee ring network is established, it is also possible that new FTU devices are connected to the 5G base station corresponding to the first target ZigBee ring network, so after the step 20, it further includes: The head FTU device generates a third application message carrying the identifier of the connectable base station, and regularly broadcasts the third application message to all FTU devices within the broadcastable area to regularly search for FTU devices that can join the first target ZigBee ring network; wherein, the period for broadcasting the third application message is selected by those skilled in the art according to specific usage scenarios. The FTU device receives the third application message, and when it has not joined the first target ZigBee ring network and meets the first joining condition, it returns a connection response message to the head FTU device; that is, when a new FTU device can join the first target ZigBee ring network, the new FTU device returns a connection response message to the head FTU device; the head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, and adds the corresponding FTU device to the first target ZigBee ring network.

[0090] The ZigBee network in the embodiment of the present invention adopts a ring topology structure, avoiding the problem of path selection for communication between FTUs. The control protocol is simple, the structure is simple, the required transmission medium is less, and the required transmission time is fixed; and as Figure 12 shown, when adding or reducing nodes, only simple connection operations are required. When an FTU that meets the first joining condition appears, it can be added to the first target ZigBee ring network.

[0091] Embodiment 2: As Figure 13 shown, it is a schematic architecture diagram of a power station FTU ring network establishment device based on 5G slices in an embodiment of the present invention. The power station FTU ring network establishment device based on 5G slices in this embodiment includes one or more processors 21 and a memory 22. Among them, Figure 13 one processor 21 is taken as an example herein.

[0092] The processor 21 and the memory 22 can be connected through a bus or other means, Figure 13 and taking the connection through a bus as an example herein.

[0093] The memory 22, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs and non-volatile computer-executable programs, such as the power station FTU ring network establishment method in this embodiment. The processor 21 executes the power station FTU ring network establishment method by running the non-volatile software programs and instructions stored in the memory 22.

[0094] The memory 22 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 22 may optionally include a memory remotely disposed relative to the processor 21, and these remote memories may be connected to the processor 21 through a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0095] The program instructions / modules are stored in the memory 22, and when executed by the one or more processors 21, perform the method for establishing a power station FTU ring network based on 5G slices in the above embodiments. For example, perform each step of the method for establishing a power station FTU ring network based on 5G slices of the embodiments of the present invention described above.

[0096] The embodiments of the present invention further provide a system for establishing a power station FTU ring network based on 5G slices. The system for establishing a power station FTU ring network based on 5G slices in the embodiments of the present invention includes a plurality of FTU devices; determine a head FTU device from the plurality of FTU devices, and the head FTU device broadcasts an application message to establish a ZigBee ring network according to the method for establishing a power station FTU ring network based on 5G slices in Embodiment 1 of the present invention. The specific steps refer to Embodiment 1 of the present invention and will not be elaborated herein.

[0097] The embodiments of the present invention further provide a non-volatile computer storage medium. The computer storage medium stores computer-executable instructions, and these computer-executable instructions are executed by one or more processors, for example Figure 13 a processor 21, which can enable the above one or more processors to execute the method for establishing a power station FTU ring network based on 5G slices in the specific embodiments of the present invention. For example, execute each step of the method for establishing a power station FTU ring network based on 5G slices of the embodiments of the present invention described above; it can also implement Figure 13 the various modules and units described above; or execute the method for establishing a power station FTU ring network based on 5G slices in the specific embodiments of the present invention. For example, execute each step of the method for establishing a power station FTU ring network based on 5G slices of the embodiments of the present invention described above; it can also implement Figure 13 the various modules and units described above.

[0098] It should be noted that for the content such as information interaction and execution process between the modules and units in the above device and system, since it is based on the same concept as the method embodiment of the present invention, the specific content can be referred to the description in the method embodiment of the present invention and will not be elaborated herein.

[0099] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium can include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc.

[0100] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for establishing a power station FTU ring network based on 5G slicing, characterized in that, The method for establishing a power station FTU ring network based on 5G slices is applied to a substation area, which includes multiple FTU devices. The head FTU device is determined from the multiple FTU devices. The method for establishing a power station FTU ring network based on 5G slices includes: The head FTU device broadcasts a first application message to all FTU devices within the broadcastable area; wherein, the first application message carries an identifiable base station identifier, and the identifiable base station identifier is: the identifier of one of the 5G base stations connected by the head FTU device; When the FTU device meets the first joining condition corresponding to the first application message, a first target ZigBee ring network is established between the head FTU device and the FTU device; wherein, the first joining condition is: the FTU device is connected to the 5G base station corresponding to the identifiable base station identifier.

2. The method for establishing a power station FTU ring network based on 5G slices according to claim 1, wherein The step of "when the FTU device meets the first joining condition corresponding to the first application message, a first target ZigBee ring network is established between the head FTU device and the FTU device" includes: The FTU device receives the first application message, determines the first joining condition according to the first application message. When the FTU device meets the first joining condition, the FTU device returns a connection response message to the head FTU device; wherein, the connection response message carries the device identifier of the FTU device. When the head FTU device receives the connection response message, the head FTU device establishes a first initial ZigBee network. The head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, and allocates network resources for the FTU device to add the FTU device to the first initial ZigBee network and establish a first target ZigBee ring network.

3. The method for establishing a power station FTU ring network based on 5G slicing according to claim 2, wherein The step of "the head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, and allocates network resources for the FTU device to add the FTU device to the first initial ZigBee network and establish a first target ZigBee ring network" includes: The head FTU device receives the connection response messages sent by the FTU devices in the broadcastable area in the order of signal strength from strong to weak. The head FTU device obtains the device identifier of the FTU device from the connection response message to determine the FTU device; allocates a network short address for the FTU device to add the FTU device to the first initial ZigBee network. The FTU device updates the configuration information according to the network short address, so as to communicate in the first target ZigBee ring network according to the configuration information.

4. The method for establishing a power station FTU ring network based on 5G slices according to claim 1, wherein, It further includes: When the FTU device does not meet the first joining condition, the FTU device broadcasts a ring network establishment request to all FTU devices within the broadcastable area as a non-joinable device; wherein, the ring network establishment request carries the sending time and signal direction of the ring network establishment request. Each FTU device within the broadcastable area obtains the sending time of the received ring network establishment request and the receiving time of the received ring network establishment request; determines the signal transceiver delay of the non-joinable device as the difference between the receiving time and the sending time; and determines the device position of the non-joinable device in the signal direction according to the signal transceiver delay and the signal propagation speed. The FTU device within the broadcastable area obtains at least one 5G base station to which it is connected, plans alternative 5G base stations for the non-joinable device from the at least one 5G base station according to the device position, and notifies the planned alternative 5G base stations to the non-joinable device to respond to the ring network establishment request. The non-joinable device obtains at least one alternative 5G base station, determines the alternative 5G base station closest to itself as the target 5G base station from the at least one alternative 5G base station, and forms a second target ZigBee ring network based on the target 5G base station.

5. The method for establishing a power station FTU ring network based on 5G slices according to claim 4, wherein, The non-joinable device obtains at least one alternative 5G base station, determines the alternative 5G base station closest to itself as the target 5G base station from the at least one alternative 5G base station, and forming a second target ZigBee ring network based on the target 5G base station includes: The non-joinable device generates a second application message carrying the identifier of the target 5G base station and broadcasts the second application message to all FTU devices within the broadcastable area. The FTU device within the broadcastable area obtains the identifier of the target 5G base station from the second application message and returns a first join message to the FTU device when it only meets the second joining condition; wherein the second joining condition is that the corresponding FTU device is connected to the target 5G base station; when it has not joined the first target ZigBee ring network and meets both the first joining condition and the second joining condition at the same time, it returns a second join message to the FTU device. The non-joinable device establishes a second initial ZigBee network, receives the first join message, and adds the corresponding FTU device to the second initial ZigBee network to establish a second target ZigBee ring network. The non-joinable device receives the second join message, uses the FTU device corresponding to the second join message as a device to be allocated, and selectively adds the device to be allocated to the second target ZigBee ring network or the first target ZigBee ring network.

6. The method for establishing a power station FTU ring network based on 5G slices according to claim 5, characterized in that, The non-joinable device receives the second join message, uses the FTU device corresponding to the second join message as a device to be allocated, and selectively adding the device to be allocated to the second target ZigBee ring network or the first target ZigBee ring network includes: The non-joinable device obtains the first data volume to be reported by each FTU device in the first target ZigBee ring network in the current period, and determines the total first ring network volume as the sum of all the first data volumes to be reported. The non-addable device obtains the second data volume to be reported by each FTU device in the second target ZigBee ring network in the current cycle, and determines the sum of all the second data volumes to be reported as the second ring network total volume; The non-addable device determines the sum of the data volume to be reported by the device to be allocated in the current cycle and the first ring network total volume as the first estimated total volume; when the difference between the first estimated total volume and the second ring network total volume is less than a preset value, it is determined to add the device to be allocated to the first target ZigBee ring network; The non-addable device determines the sum of the data volume to be reported by the device to be allocated in the current cycle and the second ring network total volume as the second estimated total volume; when the difference between the second estimated total volume and the first ring network total volume is less than a preset value, it is determined to add the device to be allocated to the second target ZigBee ring network.

7. The method for establishing a power station FTU ring network based on 5G slicing according to any one of claims 1-6, characterized in that, After establishing the first target ZigBee ring network between the head FTU device and the FTU device when the FTU device meets the first joining condition corresponding to the first application message, it further includes: Determine the network role of the head FTU device in the first target ZigBee ring network as the primary coordinator; Select an FTU device from the first target ZigBee ring network, and determine the network role of the selected FTU device as the standby coordinator of the first target ZigBee ring network; When the primary coordinator cannot connect to the corresponding 5G base station, switch the standby coordinator to a new primary coordinator; The new primary coordinator creates a new target ZigBee ring network.

8. The method for establishing a power station FTU ring network based on 5G slicing according to any one of claims 1-6, characterized in that, After establishing the first target ZigBee ring network between the head FTU device and the FTU device when the FTU device meets the first joining condition corresponding to the first application message, it further includes: The head FTU device generates a third application message carrying the connectable base station identifier, and periodically broadcasts the third application message to all FTU devices in the broadcastable area; The FTU device receives the third application message, and when it has not joined the first target ZigBee ring network itself and meets the first joining condition, returns a connection response message to the head FTU device; The head FTU device obtains the device identifier of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identifier, and adds the corresponding FTU device to the first target ZigBee ring network.

9. A non-volatile computer storage medium, characterized in that, The computer storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors to complete the method for establishing a power station FTU ring network based on a 5G slice according to any one of claims 1-8.

10. A power station FTU ring network establishment system based on 5G slicing, characterized in that, It includes a plurality of FTU devices; determine a head FTU device from the plurality of FTU devices, and the head FTU device broadcasts an application message to establish a ZigBee ring network according to the method for establishing a power station FTU ring network based on a 5G slice according to any one of claims 1-8.

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