A communication system and method applied to an internet of things of power transmission and transformation equipment

Abstract

The application discloses a kind of communication system and method applied to power transmission and transformation equipment internet of things, including sequentially communication connection wide narrowband fusion core network, fusion gateway, access controller, access node, convergence node and sensor terminal;The access node is integrated with broadband board card, broadband independent antenna, narrowband board card and narrowband independent antenna;The sensor terminal is divided into wired sensor terminal and wireless sensor terminal;The number of convergence node, wired sensor terminal and wireless sensor terminal is set to multiple;The access node and convergence node are connected between electric nature by wireless communication link or wired communication link, select suitable network communication mode according to service demand and network quality, guarantee the reliable and safe transmission of internet of things wide narrow network, improve the utilization of network resources, optimize the transmission performance of power transmission and transformation equipment.

Description

Technical Field

[0001] This invention belongs to the field of communication technology, specifically relating to a communication system and method for use in the Internet of Things (IoT) of power transmission and transformation equipment. Background Technology

[0002] In the field of the Internet of Things (IoT) for power systems, the IoT for power transmission and transformation equipment, as an application network of the power system, is an important component of the smart grid. The IoT for power transmission and transformation equipment utilizes intelligent sensing devices such as multimedia equipment, sensors, and radio frequency identification (RFID), employs information processing and communication technologies, and adheres to various power system protocols to perform intelligent status sensing, flexible data transmission, and lifecycle management of power transmission and transformation equipment.

[0003] Currently, the data communication methods of sensor terminals in the Internet of Things (IoT) of power transmission and transformation equipment are relatively simple, and the compatibility between narrowband and broadband networks for sensor terminals has not been comprehensively considered. This fails to meet the needs of smart grid environments for online monitoring and large-scale control. Narrowband networks have limited coverage and are difficult to network, but data transmission via narrowband is simple to modulate and has low equipment costs. Broadband networks have a large coverage and are easier to network, but data transmission via broadband is more expensive, and the channel quality of broadband networks is easily affected. When the channel quality is too low, the connection between the power transmission and transformation equipment terminal and the broadband base station via the broadband network becomes unreliable, leading to transmission delays or transmission failures.

[0004] Therefore, developing a hybrid broadband and narrowband networking architecture suitable for the power Internet of Things (IoT) to support different network communication methods and interface standards for various sensors is a current concern within the industry. For the IoT of power transmission and transformation equipment, ensuring reliable and secure transmission of IoT services, improving network resource utilization, and optimizing the transmission performance of power transmission and transformation equipment, given the data transmission characteristics of these devices, has become a crucial research topic in power IoT communication. Summary of the Invention

[0005] The purpose of this invention is to provide a communication system and method for Internet of Things (IoT) applications in power transmission and transformation equipment. This system selects appropriate network communication methods based on business needs and network quality to ensure reliable and secure transmission across both broadband and narrowband IoT networks, improve network resource utilization, and optimize the transmission performance of power transmission and transformation equipment.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] The first aspect of this invention provides a communication system for the Internet of Things (IoT) of power transmission and transformation equipment, comprising a broadband-narrowband converged core network, a converged gateway, an access controller, an access node, an aggregation node, and sensor terminals connected in sequence. The access node integrates a broadband board, a broadband independent antenna, a narrowband board, and a narrowband independent antenna. The sensor terminals are divided into wired sensor terminals and wireless sensor terminals. Multiple aggregation nodes, wired sensor terminals, and wireless sensor terminals are provided. The access node and aggregation node are electrically connected via a wireless communication link or a wired communication link; the wired sensor terminals and aggregation nodes are connected via a wired communication link; and the wireless sensor terminals and aggregation nodes are connected via a wireless communication link.

[0008] When the sensor terminal is simultaneously within the coverage area of ​​both broadband and narrowband networks, it can select either the broadband or narrowband network to transmit service data according to service requirements, or simultaneously utilize both broadband and narrowband networks to transmit service data.

[0009] Preferably, the communication connection between the broadband and narrowband converged core network and the wired sensor terminal is a bidirectional transmission channel.

[0010] Preferably, the wired sensor terminal transmits data via a wired connection such as optical fiber and is powered by a cable.

[0011] Preferably, the wireless sensor terminal is a wideband and narrowband dual-mode terminal, having a wideband transceiver interface and a narrowband receiving interface.

[0012] A second aspect of the present invention provides a communication method for a communication system applied to the Internet of Things (IoT) of power transmission and transformation equipment, comprising:

[0013] Obtain the service requirements transmitted by the sensor terminal; the service requirements include timeliness requirements, transmission stability requirements, and channel quality requirements;

[0014] Based on timeliness requirements and channel quality requirements, select a broadband network to transmit service data, or simultaneously utilize both broadband and narrowband networks to transmit service data; then, based on transmission stability requirements and channel quality requirements, select a narrowband network to transmit service data, or simultaneously utilize both broadband and narrowband networks to transmit service data.

[0015] Preferably, the method of selecting broadband networks to transmit service data based on timeliness requirements and channel quality requirements, or simultaneously utilizing broadband and narrowband networks to transmit service data, includes:

[0016] The timeliness requirement group includes communication transmission capacity requirement, transmission delay requirement, and transmission accuracy requirement; when the communication transmission capacity requirement is greater than the set transmission capacity threshold, the transmission delay requirement is less than the set delay threshold, or the transmission accuracy requirement is greater than the set accuracy threshold, it is determined whether the channel quality of the broadband network meets the channel quality requirements of the service.

[0017] If the channel quality of the broadband network meets the channel quality requirements of the service, the broadband network is selected to transmit the service data; if the channel quality of the broadband network does not meet the channel quality requirements of the service, both the broadband network and the narrowband network are used to transmit the service data.

[0018] Preferably, the method of selecting narrowband networks to transmit service data based on transmission stability requirements and channel quality requirements, or simultaneously utilizing broadband and narrowband networks to transmit service data, includes:

[0019] The transmission stability requirement group includes mobility requirements and interactive capability requirements. When the communication transmission capacity requirement is less than a set transmission capacity threshold, the transmission latency requirement is greater than a set latency threshold, or the transmission accuracy requirement is less than a set accuracy threshold, it is determined whether the narrowband network meets the service's mobility requirements, interactive capability requirements, and channel quality requirements. If the narrowband network meets the service's mobility requirements, interactive capability requirements, and channel quality requirements, the narrowband network is selected to transmit service data. If the narrowband network does not meet the service's mobility requirements, interactive capability requirements, or channel quality requirements, both the broadband network and the narrowband network are selected to transmit service data simultaneously.

[0020] Preferably, the method for transmitting service data using both broadband and narrowband networks includes: obtaining encoded packets by performing random linear network coding on the service data in advance through a sensor terminal, and distributing the encoded packets to the broadband and narrowband networks according to the channel transmission rate ratio of the broadband and narrowband networks for transmission to the converged gateway.

[0021] Preferably, the method of obtaining encoded packets by performing random linear network coding on business data in advance through sensor terminals includes:

[0022] Business data is divided into static business data and dynamic business data; static business data is encoded into encoded packets using a system-based encoding method, and dynamic business data is encoded into encoded packets using a streaming encoding method.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] This invention effectively combines broadband and narrowband networks, selects a suitable network communication method for each sensor terminal based on service requirements and network channel quality, and utilizes network coding technology to ensure reliable and secure transmission of IoT terminal communication services, improve the utilization rate of network resources, and optimize the transmission performance of power transmission and transformation equipment. Attached Figure Description

[0025] Figure 1 This is a structural diagram of a communication system for the Internet of Things (IoT) of power transmission and transformation equipment provided in Embodiment 1 of the present invention;

[0026] Figure 2 This is a flowchart of a communication method for a communication system applied to the Internet of Things for power transmission and transformation equipment, provided by the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment provides a communication system for the Internet of Things (IoT) of power transmission and transformation equipment, including a broadband-narrowband converged core network, a converged gateway, an access controller, an access node, an aggregation node, and sensor terminals connected in sequence. The sensor terminals are divided into wired sensor terminals and wireless sensor terminals. The communication connections between the broadband-narrowband converged core network and the wired sensor terminals are bidirectional transmission channels. The converged gateway analyzes and forwards service data from both the broadband and narrowband networks through protocol translation, enabling interoperability between broadband and narrowband network services.

[0030] The access node integrates a broadband board, a broadband independent antenna, a narrowband board, and a narrowband independent antenna. The broadband board implements the physical layer using parameters and modulation methods that support broadband device access based on the wireless frequency and bandwidth. The narrowband board implements the physical layer using parameters and modulation methods that support narrowband device access based on the wireless frequency and bandwidth. The broadband independent antenna supports broadband device access over the air interface, and the narrowband independent antenna supports narrowband device access over the air interface.

[0031] The number of aggregation nodes, wired sensor terminals, and wireless sensor terminals is set to multiple; the access nodes and aggregation nodes are electrically connected via wireless communication links or wired communication links.

[0032] The wired sensor terminal and the aggregation node are connected via a wired communication link; the wireless sensor terminal and the aggregation node are connected via a wireless communication link. The wired sensor terminal transmits data via wired connection methods such as optical fiber and is powered via cable. The wireless sensor terminal is a dual-mode (wideband and narrowband) terminal, with a broadband transceiver interface and a narrowband receiver interface, and completes data transmission according to a broadband-narrowband fusion communication method.

[0033] Example 2

[0034] like Figure 2 As shown, this embodiment provides a communication method for a communication system applied to the Internet of Things (IoT) of power transmission and transformation equipment. This method is applied to the communication system described in Embodiment 1, and the communication method includes:

[0035] Detect the network environment covered by the sensor terminal;

[0036] When the sensor terminal is only within the coverage of a narrowband network, the narrowband network is selected to transmit service data; when the sensor terminal is only within the coverage of a broadband network, the broadband network is selected to transmit service data.

[0037] When the sensor terminal is simultaneously within the coverage area of ​​both broadband and narrowband networks, the service requirements transmitted by the sensor terminal are obtained. These service requirements include timeliness requirements, transmission stability requirements, and channel quality requirements. Specific service data include: service data with large communication transmission capacity and high real-time requirements, such as video surveillance; and service data with high reliability and real-time requirements, such as precision control and power distribution automation.

[0038] Methods for selecting broadband networks to transmit service data based on timeliness requirements and channel quality requirements, or methods for simultaneously utilizing broadband and narrowband networks to transmit service data, include:

[0039] The timeliness requirement group includes communication transmission capacity requirements, transmission delay requirements, and transmission accuracy requirements. When the communication transmission capacity requirement is greater than a set transmission capacity threshold, the transmission delay requirement is less than a set delay threshold, or the transmission accuracy requirement is greater than a set accuracy threshold, it is determined whether the channel quality of the broadband network meets the channel quality requirements of the service. If the channel quality of the broadband network meets the channel quality requirements of the service, the broadband network is selected to transmit the service data. If the channel quality of the broadband network does not meet the channel quality requirements of the service, both the broadband network and the narrowband network are selected to transmit the service data simultaneously.

[0040] Then, methods for selecting narrowband networks to transmit service data based on transmission stability requirements and channel quality requirements, or methods for simultaneously utilizing broadband and narrowband networks to transmit service data, include:

[0041] The transmission stability requirement group includes mobility requirements and interactive capability requirements. When the communication transmission capacity requirement is less than a set transmission capacity threshold, the transmission latency requirement is greater than a set latency threshold, or the transmission accuracy requirement is less than a set accuracy threshold, it is determined whether the narrowband network meets the mobility requirements, interactive capability requirements, and channel quality requirements of the service. The specific service data is: service data with high requirements for mobility and interactive communication capabilities, such as mobile inspection. If the narrowband network meets the mobility requirements, interactive capability requirements, and channel quality requirements of the service, the narrowband network is selected to transmit the service data. If the narrowband network does not meet the mobility requirements, interactive capability requirements, and channel quality requirements of the service, both the broadband network and the narrowband network are selected to transmit the service data simultaneously.

[0042] Methods for simultaneously transmitting service data using both broadband and narrowband networks include:

[0043] The service data is pre-coded using random linear network coding by the sensor terminal to obtain encoded packets, and the broadband channel transmission rate is C. broad The narrowband signal transmission rate is C narrow The encoded packets are allocated to the broadband and narrowband networks according to their channel transmission rates and then transmitted to the converged gateway; for example, when C... broad =10·C narrow At that time, for every 10 encoded packets sent through the broadband channel, the wireless sensor terminal will send 1 encoded packet through the narrowband channel.

[0044] Among them, the method of obtaining encoded packets by performing random linear network coding on business data in advance through sensor terminals includes:

[0045] Business data is divided into static business data and dynamic business data. Static business data refers to data packets (such as files) that are determined before the transmission begins, while dynamic business data refers to data that arrives in real time (such as streaming media).

[0046] The random linear network coding is divided into systematic coding and streaming coding. The systematic coding method is used to encode static business data to form a coding packet, which covers the entire data packet to be transmitted. The streaming coding method is used to encode dynamic business data to form a coding packet, which encodes the data to be transmitted causally and in a sliding window manner.

[0047] By effectively combining broadband and narrowband networks, selecting appropriate network communication methods for each sensor terminal based on business needs and network channel quality, and utilizing network coding technology, reliable and secure transmission of IoT terminal communication services is ensured, network resource utilization is improved, and the transmission performance of power transmission and transformation equipment is optimized.

[0048] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0049] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0050] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0051] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A communication system for the Internet of Things (IoT) of power transmission and transformation equipment, characterized in that, The system comprises a converged core network (both broadband and narrowband), a converged gateway, an access controller, an access node, an aggregation node, and sensor terminals, all connected in sequence. Each access node integrates a broadband board, a broadband independent antenna, a narrowband board, and a narrowband independent antenna. The sensor terminals are divided into wired and wireless sensor terminals. Multiple aggregation nodes, wired sensor terminals, and wireless sensor terminals are included. Access nodes and aggregation nodes are electrically connected via either a wireless or wired communication link. Wired sensor terminals and aggregation nodes are connected via a wired communication link. Wireless sensor terminals and aggregation nodes are connected via a wireless communication link. When the sensor terminal is simultaneously within the coverage area of ​​both broadband and narrowband networks, it selects either the broadband or narrowband network to transmit service data based on service requirements, or simultaneously utilizes both broadband and narrowband networks to transmit service data; specifically including: The timeliness requirement group includes communication transmission capacity requirements, transmission latency requirements, and transmission accuracy requirements. When the communication transmission capacity requirement is greater than the set transmission capacity threshold, the transmission latency requirement is less than the set latency threshold, or the transmission accuracy requirement is greater than the set accuracy threshold, it is determined whether the channel quality of the broadband network meets the channel quality requirements of the service. If the channel quality of the broadband network meets the channel quality requirements of the service, the broadband network is selected to transmit the service data. If the channel quality of the broadband network does not meet the channel quality requirements of the service, both the broadband network and the narrowband network are selected to transmit the service data simultaneously. The transmission stability requirement group includes mobility requirements and interactive capability requirements. When the communication transmission capacity requirement is less than the set transmission capacity threshold, the transmission latency requirement is greater than the set latency threshold, or the transmission accuracy requirement is less than the set accuracy threshold, it is determined whether the narrowband network meets the mobility requirements, interactive capability requirements, and channel quality requirements of the service. If the narrowband network meets the mobility requirements, interactive capability requirements, and channel quality requirements of the service, the narrowband network is selected to transmit the service data. If the narrowband network cannot meet the mobility, interactivity, or channel quality requirements of the service, the service data can be transmitted using both the broadband and narrowband networks simultaneously. The method of transmitting service data using both broadband and narrowband networks includes: obtaining encoded packets by performing random linear network coding on the service data in advance through sensor terminals, and distributing the encoded packets to the broadband and narrowband networks according to the channel transmission rate ratio of the broadband and narrowband networks for transmission to the converged gateway.

2. The communication system for the Internet of Things (IoT) of power transmission and transformation equipment according to claim 1, characterized in that, The communication connection between the broadband and narrowband converged core network and the wired sensor terminal, and between the broadband and narrowband converged core network and the wireless sensor terminal, is a bidirectional transmission channel.

3. The communication system for the Internet of Things (IoT) of power transmission and transformation equipment according to claim 1, characterized in that, The wired sensor terminal transmits data via wired connections such as optical fibers and is powered by cables.

4. A communication system for the Internet of Things (IoT) of power transmission and transformation equipment according to claim 1, characterized in that, The wireless sensor terminal is a dual-mode terminal with both wideband and narrowband interfaces, featuring a wideband transceiver interface and a narrowband receiver interface.

5. A communication method for use in the Internet of Things (IoT) of power transmission and transformation equipment, characterized in that, The communication method is applied to the communication system according to any one of claims 1 to 4, and the communication method includes: Obtain the service requirements transmitted by the sensor terminal; the service requirements include timeliness requirements, transmission stability requirements, and channel quality requirements; Methods for selecting broadband networks to transmit service data based on timeliness requirements and channel quality requirements, or methods for simultaneously utilizing broadband and narrowband networks to transmit service data, include: The timeliness requirement group includes communication transmission capacity requirements, transmission delay requirements, and transmission accuracy requirements. When the communication transmission capacity requirement is greater than a set transmission capacity threshold, the transmission delay requirement is less than a set delay threshold, or the transmission accuracy requirement is greater than a set accuracy threshold, it is determined whether the channel quality of the broadband network meets the channel quality requirements of the service. If the channel quality of the broadband network meets the channel quality requirements of the service, the broadband network is selected to transmit the service data. If the channel quality of the broadband network does not meet the channel quality requirements of the service, both the broadband network and the narrowband network are selected to transmit the service data simultaneously. Methods for selecting narrowband networks to transmit service data based on transmission stability requirements and channel quality requirements, or methods for simultaneously utilizing broadband and narrowband networks to transmit service data, include: The transmission stability requirement group includes mobility requirements and interactive capability requirements. When the communication transmission capacity requirement is less than a set transmission capacity threshold, the transmission latency requirement is greater than a set latency threshold, or the transmission accuracy requirement is less than a set accuracy threshold, it is determined whether the narrowband network meets the service's mobility requirements, interactive capability requirements, and channel quality requirements. If the narrowband network meets the service's mobility requirements, interactive capability requirements, and channel quality requirements, the narrowband network is selected to transmit service data. If the narrowband network does not meet the service's mobility requirements, interactive capability requirements, or channel quality requirements, both the broadband network and the narrowband network are selected to transmit service data simultaneously.

6. The communication method for the Internet of Things (IoT) of power transmission and transformation equipment according to claim 5, characterized in that, Methods for obtaining encoded packets by performing random linear network coding on business data in advance through sensor terminals include: Business data is divided into static business data and dynamic business data; static business data is encoded into encoded packets using a system-based encoding method, and dynamic business data is encoded into encoded packets using a streaming encoding method.

Images