A method and system for establishing a power station FTU ring network based on 5G slicing

Abstract

The present invention relates to the field of data transmission technology, and provides a method and system for establishing a power station FTU ring network based on 5G slicing. The head FTU device broadcasts a first application message to all FTU devices in the broadcastable area; wherein, the first application message carries a connectable base station identifier, and the connectable base station identifier is: the identifier of one of the 5G base stations to which the head FTU device is connected; 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 connectable base station identifier. The present invention optimizes the network bandwidth occupancy and solves the problem that the overall bandwidth occupancy of each FTU device is too high.

Description

Technical Field

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

[0002] To promote intelligent and efficient management of power distribution in substations and reduce the intensity of traditional operations and maintenance (O&M), smart IoT systems often use converged distribution terminals to upload business data to IoT platforms. As edge devices in smart IoT systems, converged distribution terminals are responsible for collecting information from distribution substations (e.g., transformer load conditions, voltage and current parameters of transmission lines, etc.), uploading and receiving data, and performing edge computing (e.g., local processing and analysis of collected data). They can monitor the operating status of substations in real time and provide strong support for fault analysis and data display of substation distribution networks. Converged distribution terminals offer high reliability and stability, meeting the needs of complex power environments. They support multiple communication methods, including Ethernet, micropower wireless, and fifth-generation mobile communication technologies (5G). They can flexibly adapt to different network environments, enabling two-way data transmission and reducing the intensity of traditional O&M for distribution networks. The converged distribution terminal can be a distribution transformer supervisory terminal unit (TTU), a switchgear terminal unit (DTU), or a feeder terminal unit (FTU).

[0003] In the prior art, when multiple distribution convergence terminals in a substation are all FTU devices, during 5G communication, each FTU device often independently applies for a 5G slice, establishes a communication tunnel, and uses each communication tunnel to transmit its own data. However, for each FTU device, except for alarm data, which must be reported in real time, other collected data (for example, transformer monitoring data) is only 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. To ensure reporting speed, the prior art reserves bandwidth for each FTU device based on the peak amount of data required to be transmitted in real time. When the FTU device only reports alarm data, its bandwidth usage remains high, resulting in excessive overall bandwidth usage for each FTU device and a significant waste of communication resources.

[0004] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in this 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 slicing. The purpose is to establish a ZigBee ring network between multiple FTU devices so that the ZigBee ring network can be used later to enable multiple FTU devices to jointly apply for 5G slicing and share communication tunnels for data reporting, and optimize network bandwidth occupancy, greatly reducing the waste of communication resources, and solving the problem that when the FTU device is only used to report alarm data, its bandwidth occupancy continues to remain at a high level, resulting in the overall bandwidth occupancy of each FTU device being too high.

[0006] The present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a method for establishing a power station FTU ring network based on 5G slicing. The method for establishing a power station FTU ring network based on 5G slicing is applied to a substation, wherein the substation includes multiple FTU devices, and a head FTU device is determined from the multiple FTU devices. The method for establishing a power station FTU ring network based on 5G slicing includes:

[0008] The head FTU device broadcasts a first application message to all FTU devices in the broadcastable area; wherein the first application message carries a connectable base station identifier, and the connectable base station identifier is: an identifier of one of the 5G base stations to which the head FTU device is connected;

[0009] 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 connectable base station identifier.

[0010] Furthermore, when the FTU device satisfies a first joining condition corresponding to the first application message, establishing a first target ZigBee ring network between the head FTU device and the FTU device includes:

[0011] The FTU device receives the first application message, determines a first joining condition based on the first application message, and when the FTU device meets the first joining condition, returns a connection response message to the head FTU device; wherein the connection response message carries a device identifier of the FTU device;

[0012] When the head FTU device receives the connection response message, the head FTU device establishes a first initial ZigBee network;

[0013] The head FTU device obtains the device identification of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identification, allocates network resources to the FTU device, so as to add the FTU device to the first initial ZigBee network and establish a first target ZigBee ring network.

[0014] Furthermore, the head FTU device obtains a device identifier of the FTU device from the connection response message, determines a corresponding FTU device according to the obtained device identifier, and allocates network resources to the FTU device to add the FTU device to the first initial ZigBee network. Establishing a first target ZigBee ring network includes:

[0015] The head FTU device receives the connection response message sent by the FTU device in the broadcastable area in order of signal strength from strong to weak;

[0016] The head FTU device obtains the device identification of the FTU device from the connection response message to identify the FTU device; allocates a network short address to the FTU device to join the FTU device to the first initial ZigBee network;

[0017] The FTU device updates configuration information according to the network short address, so as to communicate in the first target ZigBee ring network according to the configuration information.

[0018] Furthermore, it also includes:

[0019] 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-joining device; wherein the ring network establishment request carries the sending time and signal direction of the ring network establishment request;

[0020] 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 difference between the receiving time and the sending time as the signal transceiver delay of the non-joinable device; 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;

[0021] The FTU device within the broadcastable area obtains at least one 5G base station to which it is connected, plans an alternative 5G base station for the non-joinable device according to the device location from the at least one 5G base station, and notifies the non-joinable device of the planned alternative 5G base station to respond to the ring network establishment request;

[0022] 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 establishes a second target ZigBee ring network based on the target 5G base station.

[0023] Furthermore, the non-joinable device obtains at least one candidate 5G base station, determines the candidate 5G base station closest to itself as the target 5G base station from the at least one candidate 5G base station, and establishes the second target ZigBee ring network based on the target 5G base station, including:

[0024] 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 in the broadcastable area;

[0025] 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 joining message to the FTU device when it meets only 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, it returns a second joining message to the FTU device;

[0026] The non-joinable device establishes a second initial ZigBee network, and the non-joinable device receives the first joining message and joins the corresponding FTU device into the second initial ZigBee network to establish a second target ZigBee ring network;

[0027] The non-joinable device receives the second join message, takes the FTU device corresponding to the second join message as a to-be-assigned device, and selectively joins the to-be-assigned device to the second target ZigBee ring network or the first target ZigBee ring network.

[0028] Further, the non-joinable device receives the second join message, takes the FTU device corresponding to the second join message as the to-be-assigned device, and selectively adds the to-be-assigned device to the second target ZigBee ring network or the first target ZigBee ring network, including:

[0029] The non-joinable device obtains the amount of data 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 amounts of data to be reported as the total amount of the first ring network;

[0030] The non-joinable device obtains the amount of data 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 amounts of data to be reported as the total amount of the second ring network;

[0031] The non-joinable device determines the sum of the amount of data to be reported by the to-be-assigned device in the current cycle and the total amount of the first ring network as a first estimated total amount; when the difference between the first estimated total amount and the second ring network total amount is less than a preset value, determines to add the to-be-assigned device to the first target ZigBee ring network;

[0032] The non-joinable device determines the sum of the amount of data to be reported by the device to be allocated in the current cycle and the total amount of the second ring network as the second expected total amount; when the difference between the second expected total amount and the total amount of the first ring network is less than a preset value, it is determined that the device to be allocated will be added to the second target ZigBee ring network.

[0033] Furthermore, when the FTU device satisfies the first joining condition corresponding to the first application message, after establishing a first target ZigBee ring network between the head FTU device and the FTU device, the method further includes:

[0034] Determine the network role of the head FTU device in the first target ZigBee ring network as the active coordinator;

[0035] Selecting an FTU device from the first target ZigBee ring network, and determining the network role of the selected FTU device as a backup coordinator of the first target ZigBee ring network;

[0036] When the active coordinator cannot connect to the corresponding 5G base station, the standby coordinator is switched to the new active coordinator;

[0037] A new target ZigBee ring network is created by the new active coordinator.

[0038] Furthermore, when the FTU device satisfies the first joining condition corresponding to the first application message, after establishing a first target ZigBee ring network between the head FTU device and the FTU device, the method further includes:

[0039] 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 in the broadcastable area;

[0040] The FTU device receives the third application message, and when the FTU device itself 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;

[0041] The head FTU device obtains the device identification of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identification, and adds the corresponding FTU device to the first target ZigBee ring network.

[0042] In a second aspect, the present invention further provides a 5G slicing-based FTU ring network establishment device for a power station, including:

[0043] 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 execute the method for establishing a power station FTU ring network based on 5G slicing as described in the first aspect.

[0044] In a third aspect, the present invention also provides a non-volatile computer storage medium, which stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors to complete the power station FTU ring network establishment method based on 5G slicing described in the first aspect.

[0045] In a fourth aspect, a computer program product comprising instructions is provided. When the instructions are executed on a computer or processor, the computer or processor executes the method for establishing a power station FTU ring network based on 5G slicing as described in the first aspect.

[0046] In the fifth aspect, the present invention also provides a power station FTU ring network establishment system based on 5G slicing, including the power station FTU ring network establishment device based on 5G slicing as the third aspect, and uses the power station FTU ring network establishment method based on 5G slicing as described in the first aspect to complete the interaction of the power station FTU ring network establishment device based on 5G slicing based on the third aspect.

[0047] Different from the prior art, the present invention has at least the following beneficial effects:

[0048] Since FTU devices are often installed in substations to monitor transformers and report monitoring data, the location of each FTU device remains unchanged for a long time, and the 5G base station connectable to the FTU device also remains unchanged for a long time. The various monitoring data that the FTU device needs to report in each reporting cycle will not change frequently. Therefore, the present invention uses the ZigBee network to gather FTU devices connected to the same 5G base station in the broadcastable area of the substation, so that each ZigBee network can be used as the basic unit to uniformly apply for 5G slices and multiplex communication tunnels. Since the types of multiple FTU devices within the broadcastable range are often the same, the data required to be reported is similar, and the difference in occupied bandwidth will not be too large, by enabling multiple FTU devices to jointly apply for 5G slices and share communication tunnels for data reporting, for multiple FTU devices in a ZigBee network, when some FTU devices occupy lower bandwidth, some FTU devices often occupy higher bandwidth, avoiding each FTU device from continuously occupying higher bandwidth individually, 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 the FTU device only needs to report alarm data, its bandwidth occupancy continues to remain at a high level, resulting in the overall bandwidth occupancy of each FTU device being too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0050] Figure 1 This is a flowchart of a method for establishing a power station FTU ring network based on 5G slicing provided by an embodiment of the present invention;

[0051] Figure 2 is a schematic diagram of a specific example of a first target ZigBee ring network provided by an embodiment of the present invention;

[0052] Figure 3 is a flow chart of step 20 provided in an embodiment of the present invention;

[0053] Figure 4 This is a schematic diagram of a specific example of a broadcastable area provided by an embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of a specific example of information interaction between a head FTU device, an FTU device 1, and an FTU device 2 provided by an embodiment of the present invention;

[0055] Figure 6 is a flow chart of step 203 provided by an embodiment of the present invention;

[0056] Figure 7 This is a flow chart of a second method for establishing a power station FTU ring network based on 5G slicing provided by an embodiment of the present invention;

[0057] Figure 8 is a flow chart of step 304 provided by an embodiment of the present invention;

[0058] Figure 9 This is a flowchart of a method for establishing a power station FTU ring network based on 5G slicing provided by an embodiment of the present invention;

[0059] Figure 10 is a schematic diagram of another specific example of a first target ZigBee ring network provided by an embodiment of the present invention;

[0060] Figure 11 is a schematic diagram of a specific example of a second target ZigBee ring network provided by an embodiment of the present invention;

[0061] Figure 12 This is a schematic diagram of a specific example of another FTU device joining a first target ZigBee ring network provided by an embodiment of the present invention;

[0062] Figure 13 This is a schematic diagram of the architecture of a power station FTU ring network establishment device based on 5G slicing provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0063] In order to make the purpose, 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 intended to limit the present invention.

[0064] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as meaning open inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer 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 embodiments or examples of the above terms due to reasons such as the order and position of appearance, it is not limited to that they can be carried in combination by one embodiment or example.

[0065] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present disclosure.

[0066] In the description of the present invention, the terms "first" and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "third" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, for example, the description may also use the method of adding "A" and "B" at the end to describe the same type of nouns as two independent individuals. In this case, the corresponding features defined as "A" and "B" are only used to distinguish the description purposes of the same type of individuals, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0067] When describing some embodiments, the expressions “coupled”, “coupled” and “connected” and their derivatives may be used. For example, when describing some embodiments, the term “connected” may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term “coupled” may be used to indicate that two or more components are in direct physical or electrical contact. However, the term “connected” or “coupled” may also mean that two or more components are not in direct contact with each other, but still cooperate or interact with each other, such as “optical coupling”, “wireless connection”, etc. The embodiments disclosed herein are not necessarily limited to the contents of the present invention.

[0068] In the description of the present invention, the expression "A and / or B" (where A and B are used to formally represent specific characteristic contents) is involved, and the corresponding expressions include the following three combinations: only A, only B, and a combination of A and B.

[0069] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and errors associated with measurement of the particular quantity (i.e., limitations of the measurement system).

[0070] 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.

[0071] Embodiment 1:

[0072] In order to solve the above problems, Figure 1 As shown, an embodiment of the present invention provides a method for establishing a power station FTU ring network based on 5G slicing. The method for establishing a power station FTU ring network based on 5G slicing is applied to a substation area. 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 slicing includes:

[0073] Step 10: The head FTU device broadcasts a first application message to all FTU devices in the broadcastable area; wherein, the first application message carries a connectable base station identifier, and the connectable base station identifier is: the identifier of one of the 5G base stations to which the head FTU device is connected.

[0074] The head FTU device is used to establish a ZigBee network. The method for determining the head FTU device among multiple FTU devices is determined by those skilled in the art based on the specific usage scenario. ZigBee networks are suitable for communication between multiple FTU devices with short transmission ranges and low data transmission rates.

[0075] 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 technical personnel in this field according to the specific usage scenario. In an optional embodiment, the broadcastable area can be: with the head FTU device as the center, the distance between the head FTU device and the head FTU device is within a certain value.

[0076] In one embodiment, after successfully accessing a corresponding 5G base station, an FTU device sends an access message to the 5G base station. The access message carries the FTU device's device identifier and NR Cell Global Identifier (NCGI). The NCGI is obtained by the FTU device during access to the 5G base station by monitoring the System Information Block Type 1 (SIB1) message broadcast by the 5G base station. That is, the 5G base station broadcasts SIB1 messages at regular intervals. Upon receiving the SIB1 message, surrounding FTU devices obtain the NCGI from the SIB1 message and use the obtained NCGI to request access from the 5G base station. For a region, it can be understood that a 5G base station has a unique NCGI. Before the FTU device registers for the 5G network and applies for a 5G slice, multiple FTU devices within the broadcast area can use low-speed bandwidth through the 5G base station to transmit messages, for example, to transmit the first application message.

[0077] 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; wherein, the first joining condition is: the FTU device is connected to the 5G base station corresponding to the connectable base station identifier.

[0078] 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.

[0079] After receiving the first broadcast application message, the FTU device will analyze whether the identifier of the 5G base station to which it is connected is the same as the identifier of the 5G base station in the first application message. Only FTU devices that meet the first joining condition will be added to the first target ZigBee ring network by the head FTU device. Since the purpose of establishing a 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 reuse the communication tunnel, the multiple FTU devices must be connected to the same 5G base station, so that the FTU devices in the subsequent ZigBee ring network can all apply for 5G slices from the same 5G base station.

[0080] The embodiment of the present invention first establishes a ZigBee network. By adding multiple routers and terminal device nodes and configuring the routing relationships between them, the ZigBee network can form a ring network structure. The nodes (i.e., FTU devices) can communicate with each other in a completely peer-to-peer manner. Each node can communicate with other nodes within its wireless communication range without the need for forwarding by other FTU devices.

[0081] like Figure 2 The figure shows a specific example of the first target ZigBee ring network; it should be noted that, Figure 2 The monitoring master station and transformers are not shown. Each feeder line is connected to a corresponding FTU device at one end and to the transformer monitored by the FTU device at the other end. In one embodiment, the first target ZigBee ring network includes: a number of feeder lines, a number of FTU devices, ZigBee channels, and General Packet Radio Service (GPRS) channels. Each feeder line is connected to each FTU device in a one-to-one correspondence; the FTU devices are connected end-to-end via ZigBee channels to form a ring topology, and the FTU devices are connected end-to-end via GPRS channels to form a ring topology. In the ZigBee ring network, the FTU devices communicate with each other via either ZigBee channels or GPRS channels. In one embodiment, automatic switching between ZigBee and GPRS channels is implemented. Specifically, if the corresponding communication signal attenuates excessively during transmission, the communication signal automatically switches to the ZigBee channel; if the communication signal encounters an obstacle during transmission, the communication signal automatically switches to the GPRS channel. Among them, the ZigBee channel can self-organize with low complexity, low power consumption and low cost, while the GPRS channel has low connection cost, high transmission rate and short access time.

[0082] Since FTU devices are often installed in substations to monitor transformers and report monitoring data, the location of each FTU device remains unchanged for a long time, and the 5G base station connectable to the FTU device also remains unchanged for a long time. The various monitoring data that the FTU device needs to report in each reporting cycle will not change frequently. Therefore, the present invention uses the ZigBee network to gather FTU devices connected to the same 5G base station in the broadcastable area of the substation, so that each ZigBee network can be used as the basic unit to uniformly apply for 5G slices and multiplex communication tunnels. Since the types of multiple FTU devices within the broadcastable range are often the same, the data required to be reported is similar, and the difference in occupied bandwidth will not be too large, by enabling multiple FTU devices to jointly apply for 5G slices and share communication tunnels for data reporting, for multiple FTU devices in a ZigBee network, when some FTU devices occupy lower bandwidth, some FTU devices often occupy higher bandwidth, avoiding each FTU device from continuously occupying higher bandwidth individually, 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 the FTU device only needs to report alarm data, its bandwidth occupancy continues to remain at a high level, resulting in the overall bandwidth occupancy of each FTU device being too high.

[0083] The embodiment of the present invention establishes a ZigBee network, so that when subsequent FTU devices need to apply for 5G slicing, establish communication tunnels, and report monitoring data, multiple FTU devices in the same ZigBee network can negotiate internally.

[0084] Specifically, if Figure 3 As shown, the step 20 includes:

[0085] Step 201: The FTU device receives the first application message and determines a first joining condition based on 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.

[0086] 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. In order 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 Figure 4As shown, there are often multiple FTU devices within the broadcastable area. For example, there are 10 FTU devices within the broadcastable area, 9 of which 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 one of the 10 FTU devices receives the first application message and determines that it is also connected to the 5G base station, it returns a connection response message to the head FTU device.

[0087] Step 202: When the head FTU device receives the connection response message, the head FTU device establishes a first initial ZigBee network.

[0088] like Figure 5 As shown, 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 a communication tunnel with the head FTU device for monitoring data reporting. Therefore, the first target ZigBee ring network can be established together with the FTU device. When establishing the first target ZigBee ring network, the network role of the head FTU device is first determined to be a coordinator. The head FTU device then establishes the first initial ZigBee network, including allocating a network identifier and determining a communication channel. In a ZigBee network, the network roles of each FTU device include: coordinator, router, and terminal 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 network coverage and forwarding data packets within the ZigBee network. The terminal device is a device that only interacts with the ZigBee network and does not forward data packets within the ZigBee network.

[0089] In one embodiment, the head FTU device selects a communication channel and establishes a first initial ZigBee network, obtains a network identifier of the first initial ZigBee network, and determines its own (ie, the head FTU device) network address as 0x0000.

[0090] Step 203: The head FTU device obtains the device identification of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identification, allocates network resources to the FTU device, and adds the FTU device to the first initial ZigBee network to establish a first target ZigBee ring network.

[0091] After the first initial ZigBee network is established, FTU devices other than the head FTU device may request to join the first initial ZigBee network.

[0092] In an optional embodiment, the head FTU device can determine the distance between the corresponding FTU device and itself according to the signal strength of the received connection response message, and add the FTU devices corresponding to the connection response message to the first initial ZigBee network in descending order of signal strength, and gradually establish the first target ZigBee ring network; specifically, Figure 6 As shown, step 203 includes:

[0093] Step 2031: The head FTU device receives connection response messages sent by the FTU devices in the broadcastable area in order of signal strength from strong to weak.

[0094] Step 2032: The head FTU device obtains the device identification of the FTU device from the connection response message to identify the FTU device; and allocates a network short address to the FTU device to join the FTU device to the first initial ZigBee network.

[0095] Step 2033: The FTU device updates configuration information according to the network short address, so as to communicate in the first target ZigBee ring network according to the configuration information.

[0096] 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; and the configuration information may be the configuration information of the FTU device in the routing table of the first target ZigBee ring network.

[0097] In one embodiment, the head FTU device receives the connection response message in sequence, 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 the addition of the FTU device to the first initial ZigBee network; the FTU device can then use the network short address as its own unique identifier, forward data packets in the first target ZigBee ring network according to the configuration information, and communicate with other FTU devices in the first target ZigBee ring network.

[0098] When the primary coordinator establishes the first target ZigBee ring network, there may be FTU devices in the broadcastable area that do not meet the first joining conditions. In order to enable these FTU devices to optimize bandwidth usage by establishing a ZigBee network, Figure 7 As shown, the method for establishing a power station FTU ring network based on 5G slicing also includes:

[0099] Step 301: 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-joining device; wherein the ring network establishment request carries the sending time and signal direction of the ring network establishment request.

[0100] 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 FTU devices in the first target ZigBee ring network are connected, there may also be connections with other 5G base stations and individual FTU devices in the broadcastable area in the broadcastable area. In order to optimize the allocation of communication resources, FTU devices that do not meet the first joining condition broadcast a ring network establishment request to FTU devices in the broadcastable area to obtain other 5G base stations in the broadcastable area, so as to facilitate the subsequent use of FTU devices connected to the same 5G to establish another ZigBee network.

[0101] 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 that receives the ring network establishment request.

[0102] 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 difference between the receiving time and the sending time as the signal receiving and transmitting delay of the non-joinable device; and determines the device position of the non-joinable device in the signal direction according to the signal receiving and transmitting delay and the signal propagation speed.

[0103] Among them, all FTU devices in the broadcastable area receive the ring network establishment request, and the ring network establishment request received by each FTU device 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.

[0104] In one embodiment, since the FTU device that receives the ring network establishment request can obtain the transmission time and signal direction, it can calculate the product of the signal transmission and reception 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 location of the non-joinable device.

[0105] Step 303: The FTU device within the broadcastable area obtains at least one 5G base station to which it is connected, and plans an alternative 5G base station for the non-joinable device according to the device location from the at least one 5G base station, and notifies the non-joinable device of the planned alternative 5G base station to respond to the ring network establishment request.

[0106] Within the broadcastable area, there are likely multiple FTU devices connected to other 5G base stations (i.e., other than the 5G base station corresponding to the first target ZigBee ring network). For example, an FTU device that receives a ring network establishment request is connected to 5G base station 1, 5G base station 2, and 5G base station 3. This embodiment of the present invention uses these FTU devices to plan alternative 5G base stations for non-joinable devices. Specifically, the FTU device within the broadcastable area selects a 5G base station located near the location of the non-joinable device from at least one 5G base station to which it is connected as a candidate 5G base station and notifies the non-joinable device of this. For example, because the distances between 5G base station 2 and 5G base station 3 and the device's location are both within a certain range, 5G base station 2 and 5G base station 3 are selected as candidate 5G base stations, and the corresponding identifiers are sent to the non-joinable device.

[0107] Step 304: 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 establishes a second target ZigBee ring network based on the target 5G base station.

[0108] Since the non-joinable device in the embodiment of the present invention selects a target 5G base station from multiple candidate 5G base stations planned by each FTU device in the broadcastable area, it is possible to ensure that at least one FTU device in the broadcastable area is connected to the target 5G base station, and thus can jointly establish a second target ZigBee ring network. Moreover, since the FTU devices in the broadcastable area plan the candidate 5G base stations based on the device location, each candidate 5G base station is close to the location of the non-joinable device, and thus the target 5G base station finally determined is close to the location of the non-joinable device. This is conducive to as many FTU devices as possible near the non-joinable device that have not yet joined or are unable to join the first target ZigBee ring network to jointly establish the 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, it can enable more FTU devices that have not yet joined or are unable to join the first target ZigBee ring network to jointly apply for 5G slices and share communication tunnels for data reporting through the ZigBee network, thereby further optimizing network bandwidth usage.

[0109] For example, when the alternative 5G base stations currently planned for each FTU device as the non-joinable device are: 5G base station 1, 5G base station 2 and 5G base station 3, the non-joinable 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 device connected to the target 5G base station.

[0110] like Figure 4 As shown, there can be many FTU devices in the broadcastable area. For example, there are 10 FTU devices in the broadcastable area, of which 6 FTU devices can establish a 5G signal connection with the same 5G base station, and 4 FTU devices can establish a 5G signal connection with another 5G base station (i.e., other 5G base stations). When the 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 As shown, step 304 includes:

[0111] Step 3041: 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 in the broadcastable area.

[0112] For example, the second application message carries the identifier of 5G base station 1.

[0113] Step 3042: The FTU device within the broadcastable area obtains the identifier of the target 5G base station from the second application message, and returns the first joining message to the FTU device when it only meets the second joining condition; wherein, the second joining condition is: the corresponding FTU device is connected to the target 5G base station; when it itself has not joined the first target ZigBee ring network, and meets both the first joining condition and the second joining condition, it returns the second joining message to the FTU device.

[0114] For example, when all FTU devices in the first target ZigBee ring network are connected to 5G base station 2, if an FTU device within the broadcastable area is only connected to 5G base station 1, it only meets the second joining condition, and a first joining message is returned to the FTU device to apply for jointly establishing the second target ZigBee ring network. When an FTU device within the broadcastable area has not joined the first target ZigBee ring network and is connected to both 5G base station 1 and 5G base station 2, it meets both the first joining condition and the second joining condition, and a second joining message is returned to the FTU device to inform the FTU device that it can jointly establish the second target ZigBee ring network. The FTU device then determines whether to jointly establish the second target ZigBee ring network.

[0115] Step 3043: The non-joinable device establishes a second initial ZigBee network. The non-joinable device receives the first joining message and joins the corresponding FTU device into the second initial ZigBee network to establish a second target ZigBee ring network.

[0116] For the FTU device in the broadcastable area, when it only meets the second joining condition, it means that it is connected to only one 5G base station, which is the same as the 5G base station connected to the non-joinable device. Therefore, it can only join the second target ZigBee ring network and cannot join the first target ZigBee ring network.

[0117] For the non-joinable device, whenever a first joining message is received, it means that there is at least one FTU device that can jointly establish the second target ZigBee ring network with it.

[0118] 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.

[0119] For the FTU device in the broadcastable area, when it has not joined the first target ZigBee ring network and meets both the first joining condition and the second joining condition, it means that it is connected to at least two 5G base stations, and 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 connected to the non-joinable device. Therefore, it can subsequently join the second target ZigBee ring network or the first target ZigBee ring network. Therefore, it is regarded as a device to be allocated, and further planning is made for it to join the target ZigBee ring network suitable for joining.

[0120] For example, there are 10 FTU devices in the broadcastable area, of which 6 FTU devices can establish a 5G signal connection with the same 5G base station, 1 FTU device can establish a 5G signal connection with another 5G base station, and the remaining 3 FTU devices can establish a 5G signal connection with both of the above two 5G base stations.

[0121] Figure 4 As shown in the figure, since there are often multiple transformers arranged in a substation, some FTU devices are connected to only one 5G base station, another part of the FTU devices are connected to only another 5G base station, and the remaining part of the FTU devices are connected to both 5G base stations. At this time, two ZigBee networks need to be established for these two 5G base stations respectively to ensure that the subsequent communication data volume with each 5G base station is relatively balanced, so as to better optimize network bandwidth and allocate communication resources.

[0122] To establish the first target ZigBee ring network, the head FTU device initiates a broadcast, while the non-joinable device initiates a broadcast to establish the second target ZigBee ring network. When an FTU device within the broadcastable area responds to the broadcast, it returns a corresponding message to the head FTU device. The head FTU device processes the received messages in descending order of signal strength to join the corresponding FTU device to the corresponding ZigBee network. This embodiment of the present invention uses the example of a non-joinable device processing a message returned by a to-be-assigned device to illustrate the process of joining the second initial ZigBee network.

[0123] In an optional embodiment, the non-joinable device obtains the amount of data 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 amounts of data to be reported as the total amount of the first ring network. The FTU devices in the first target ZigBee ring network refer to all FTU devices that have joined the first target ZigBee ring network. The amount of data 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 based on the specific usage scenario of the FTU device, and is not limited here. The non-joinable device obtains the amount of data 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 amounts of data to be reported as the total amount of the second ring network. The FTU devices in the second target ZigBee ring network refer to all the FTU devices that have joined the second target ZigBee ring network. The non-joinable device determines the sum of the amount of data to be reported by the device to be allocated in the current cycle and the total amount of the first ring network as the first estimated total amount; when the difference between the first estimated total amount and the total amount of the second ring network is less than a preset value, it is determined that the device to be allocated will be added to the first target ZigBee ring network; wherein, the preset value is selected by a person skilled in the art according to the specific usage scenario. The first estimated total amount is used to estimate: after the device to be allocated is added to the first target ZigBee ring network, the amount of data 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 amount and the total amount of the second ring network is less than the preset value, indicating that after the device to be allocated is added to the first target ZigBee ring network, the difference between the sum of the amount of data to be reported by the first target ZigBee ring network and the second target ZigBee ring network in the current cycle is small, and the subsequent communication data volume between the 5G base stations corresponding to the first target ZigBee ring network and the second target ZigBee ring network is relatively balanced, so it is determined that the device to be allocated is added to the first target ZigBee ring network. The non-joinable device determines the sum of the amount of data to be reported by the device to be allocated in the current cycle and the total amount of the second ring network as the second expected total amount; when the difference between the second expected total amount and the total amount of the first ring network is less than a preset value, it is determined that the device to be allocated will be added to the second target ZigBee ring network.The second estimated total amount is used to estimate: after the device to be allocated is added to the second target ZigBee ring network, the amount of data to be reported by all FTU devices that have joined the second target ZigBee ring network in the current cycle; the difference between the second estimated total amount and the first ring network total amount is less than the preset value, indicating that after the device to be allocated is added to the second target ZigBee ring network, the difference between the sum of the amount of data to be reported in the current cycle of the first target ZigBee ring network and the second target ZigBee ring network is small, and the subsequent communication data volume between the 5G base stations corresponding to the first target ZigBee ring network and the second target ZigBee ring network is relatively balanced, so it is determined that the device to be allocated is added to the second target ZigBee ring network.

[0124] This embodiment of the present invention compares the amount of data required to be transmitted by the FTUs already participating in the network. This balances the amount of data required to be transmitted between the two ZigBee networks in a competitive environment, thereby ensuring optimal resource utilization in the communication tunnels. Because the cost of establishing each communication tunnel is high, this embodiment of the present invention maximizes the number of FTUs occupying fewer communication tunnels, thereby spreading the cost of establishing communication tunnels.

[0125] When an embodiment of the present invention confirms that an FTU device that does not meet the first joining condition meets the signal strength condition with the 5G signal of another 5G base station (that is, it can be connected to the 5G base station), it initiates a ring network establishment request based on another 5G base station in the broadcast of the head FTU device it receives, that is, broadcasts a second application message in the broadcastable area to establish a new ZigBee network.

[0126] After the first target ZigBee ring network is established, when the connection between the active coordinator and the 5G base station fails, such as Figure 9 As shown, after step 20, the method further includes:

[0127] Step 401: Determine the network role of the head FTU device in the first target ZigBee ring network as the active coordinator.

[0128] Step 402: Select an FTU device from the first target ZigBee ring network, and determine the network role of the selected FTU device as a backup coordinator of the first target ZigBee ring network.

[0129] For example, Figure 10 As shown, the first target ZigBee ring network has a primary coordinator (i.e., the head FTU device), a backup coordinator (i.e., 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 connect to 5G base station 2.

[0130] Step 403: When the active coordinator cannot connect to the corresponding 5G base station, the standby coordinator is switched to a new active coordinator.

[0131] Step 404: The new active coordinator creates a new target ZigBee ring network.

[0132] The process of the new master 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 repeated here.

[0133] For example, Figure 11 As shown, the backup coordinator of the first target ZigBee ring network is used as the main coordinator to create a second initial ZigBee network.

[0134] For example, the backup 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, so as to obtain Figure 11 The second target ZigBee ring network is shown.

[0135] The FTU devices in the first target ZigBee ring network can communicate over the network by sending and receiving messages to transmit information required to establish a new second target ZigBee ring network (e.g., the identifiers of each FTU device). A specific example of a ZigBee data frame structure is shown in Table 1 below.

[0136] Table 1 Specific example of ZigBee data frame structure

[0137]

[0138] In one embodiment, each FTU device may send messages using a broadcast mode.

[0139] Since after the first target ZigBee ring network is established, a new FTU device may also be connected to the 5G base station corresponding to the first target ZigBee ring network, so after step 20, the following steps are further included:

[0140] 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 in the broadcastable area to regularly search for FTU devices that can join the first target ZigBee ring network; wherein, the period of broadcasting the third application message is selected by a person skilled in the art according to the specific usage scenario. 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 appears that 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.

[0141] The ZigBee network of the embodiment of the present invention adopts a ring topology, which avoids the path selection problem of communication between FTUs, has a simple control protocol and a simple structure, requires less transmission medium, and has a fixed transmission time; and Figure 12 As shown, adding or reducing nodes only requires a simple connection operation, and when an FTU that meets the first joining condition appears, it can be added to the first target ZigBee ring network.

[0142] Example 2:

[0143] like Figure 13 , is a schematic diagram of an architecture of a power station FTU ring network establishment device based on 5G slicing according to an embodiment of the present invention. The power station FTU ring network establishment device based on 5G slicing according to this embodiment includes one or more processors 21 and a memory 22. Figure 13 A processor 21 is taken as an example.

[0144] The processor 21 and the memory 22 may be connected via a bus or other means. Figure 13 The bus connection is taken as an example.

[0145] 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 method for establishing a power plant FTU ring network based on 5G slicing in this embodiment. Processor 21 executes the method for establishing a power plant FTU ring network based on 5G slicing by running the non-volatile software programs and instructions stored in memory 22.

[0146] The memory 22 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some embodiments, the memory 22 may optionally include a memory remotely located relative to the processor 21, and such remote memory may be connected to the processor 21 via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0147] The program instructions / modules are stored in the memory 22. When executed by the one or more processors 21, the method for establishing a power station FTU ring network based on 5G slicing in the above-mentioned embodiment is executed, for example, each step of the method for establishing a power station FTU ring network based on 5G slicing in the embodiment of the present invention described above is executed.

[0148] An embodiment of the present invention also provides a power station FTU ring network establishment system based on 5G slicing. The power station FTU ring network establishment system based on 5G slicing in an embodiment of the present invention includes multiple FTU devices; a head FTU device is determined from the multiple FTU devices, and the head FTU device broadcasts an application message to establish a ZigBee ring network according to the power station FTU ring network establishment method based on 5G slicing in Example 1 of the present invention. The specific steps refer to Example 1 of the present invention and are not repeated here.

[0149] An embodiment of the present invention further provides a non-volatile computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are executed by one or more processors, for example Figure 13 A processor 21 can enable the above one or more processors to execute the method for establishing a power station FTU ring network based on 5G slicing in the specific embodiment of the present invention, for example, execute the various steps of the method for establishing a power station FTU ring network based on 5G slicing in the embodiment of the present invention described above; it can also realize Figure 13 The various modules and units described above; or executing the method for establishing a power station FTU ring network based on 5G slicing in a specific embodiment of the present invention, for example, executing the various steps of the method for establishing a power station FTU ring network based on 5G slicing in the embodiment of the present invention described above; it can also be realized Figure 13 The various modules and units described.

[0150] It is worth noting that the information interaction, execution process, etc. between the modules and units within the above-mentioned devices and systems are based on the same concept as the processing method embodiment of the present invention. The specific content can be found in the description of the method embodiment of the present invention and will not be repeated here.

[0151] Those skilled in the art will understand that all or part of the steps in the various methods of the embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), a disk or an optical disk, etc.

[0152] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection 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 slicing is applied to a substation area, where 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 slicing includes: The head FTU device broadcasts a first application message to all FTU devices in the broadcastable area; wherein the first application message carries a connectable base station identifier, and the connectable base station identifier is: an identifier of one of the 5G base stations to which the head FTU device is connected; 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 that the FTU device is connected to the 5G base station corresponding to the connectable base station identifier; Obtain the 5G base station to which all FTU devices in the first target ZigBee ring network are connected; multiple FTU devices in the first target ZigBee ring network uniformly apply for 5G slices from the obtained 5G base station and reuse the communication tunnel.

2. The method for establishing a power station FTU ring network based on 5G slicing according to claim 1 is characterized in that: When the FTU device satisfies the first joining condition corresponding to the first application message, establishing a first target ZigBee ring network between the head FTU device and the FTU device includes: The FTU device receives the first application message, determines a first joining condition based on the first application message, and when the FTU device meets the first joining condition, returns a connection response message to the head FTU device; wherein the connection response message carries a 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 identification of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identification, allocates network resources to the FTU device, so as 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 is characterized in that: 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 to the FTU device to add the FTU device to the first initial ZigBee network. Establishing the first target ZigBee ring network includes: The head FTU device receives the connection response message sent by the FTU device in the broadcastable area in order of signal strength from strong to weak; The head FTU device obtains the device identification of the FTU device from the connection response message to identify the FTU device; allocates a network short address to the FTU device to join the FTU device to the first initial ZigBee network; The FTU device updates 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 slicing according to claim 1 is characterized in that: Also 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-joining device; wherein the ring network establishment request carries the sending time and signal direction of the ring network establishment request; 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 difference between the receiving time and the sending time as the signal transceiver delay of the non-joinable device; 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 an alternative 5G base station for the non-joinable device according to the device location from the at least one 5G base station, and notifies the non-joinable device of the planned alternative 5G base station 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 establishes 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 slicing according to claim 4 is characterized in that: The non-joinable device obtains at least one candidate 5G base station, determines the candidate 5G base station closest to the non-joinable device as a target 5G base station from the at least one candidate 5G base station, and establishes a second target ZigBee ring network based on the target 5G base station, including: 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 in 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 joining message to the FTU device when it meets only 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, it returns a second joining message to the FTU device; The non-joinable device establishes a second initial ZigBee network, and the non-joinable device receives the first joining message and joins the corresponding FTU device into the second initial ZigBee network to establish a second target ZigBee ring network; The non-joinable device receives the second join message, takes the FTU device corresponding to the second join message as a to-be-assigned device, and selectively joins the to-be-assigned device 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 slicing 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 to-be-assigned device, and selectively adds the to-be-assigned device to the second target ZigBee ring network or the first target ZigBee ring network, including: The non-joinable device obtains the first amount of data 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 amounts of data to be reported as the total amount of the first ring network; The non-joinable device obtains the second amount of data 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 amounts of data to be reported as the total amount of the second ring network; The non-joinable device determines the sum of the amount of data to be reported by the to-be-assigned device in the current cycle and the total amount of the first ring network as a first estimated total amount; when the difference between the first estimated total amount and the second ring network total amount is less than a preset value, determines to add the to-be-assigned device to the first target ZigBee ring network; The non-joinable device determines the sum of the amount of data to be reported by the device to be allocated in the current cycle and the total amount of the second ring network as the second expected total amount; when the difference between the second expected total amount and the total amount of the first ring network is less than a preset value, it is determined that the device to be allocated will be added 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 to 6, characterized in that: When the FTU device satisfies the first joining condition corresponding to the first application message, after establishing a first target ZigBee ring network between the head FTU device and the FTU device, the method further includes: Determine the network role of the head FTU device in the first target ZigBee ring network as the active coordinator; Selecting an FTU device from the first target ZigBee ring network, and determining the network role of the selected FTU device as a backup coordinator of the first target ZigBee ring network; When the active coordinator cannot connect to the corresponding 5G base station, the standby coordinator is switched to the new active coordinator; A new target ZigBee ring network is created by the new active coordinator.

8. The method for establishing a power station FTU ring network based on 5G slicing according to any one of claims 1 to 6, characterized in that: When the FTU device satisfies the first joining condition corresponding to the first application message, after establishing a first target ZigBee ring network between the head FTU device and the FTU device, the method 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 in the broadcastable area; The FTU device receives the third application message, and when the FTU device itself 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 identification of the FTU device from the connection response message, determines the corresponding FTU device according to the obtained device identification, 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, which are executed by one or more processors to complete the method for establishing a power station FTU ring network based on 5G slicing as described in any one of claims 1-8.

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

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