CN210247067U - Authorization-free frequency band wireless data transmission device - Google Patents
Authorization-free frequency band wireless data transmission device Download PDFInfo
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- CN210247067U CN210247067U CN201921570571.3U CN201921570571U CN210247067U CN 210247067 U CN210247067 U CN 210247067U CN 201921570571 U CN201921570571 U CN 201921570571U CN 210247067 U CN210247067 U CN 210247067U
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Abstract
The wireless data transmission device of the unlicensed frequency band comprises an equipment end, an OFDM communication base station and a monitoring end, wherein the OFDM communication base station is used for acquiring operation data of the equipment end and transmitting the operation data to the monitoring end, and the monitoring end is used for receiving and processing the operation data of the equipment end. The utility model discloses a wireless data transmission technique has the good characteristic of ad hoc network, self-management, selfreparing and self-balancing, supports the multiple spot jumper connection, satisfies the network deployment transmission under the multiple node condition.
Description
Technical Field
The utility model relates to a data transmission technology, concretely relates to exempt from wireless data transmission device of mandate frequency channel.
Background
In a conventional communication system, a terminal device transmits data and control information to a network device, and an uplink data transmission mode based on authorization is adopted. The uplink data transmission mode based on authorization comprises the following processes: the terminal equipment requests uplink data transmission scheduling permission to the network equipment, and transmits uplink data to the network equipment by adopting the spectrum resource indicated in the scheduling permission under the condition of acquiring the uplink data transmission scheduling permission. The process of acquiring the uplink data transmission scheduling grant by the terminal equipment consumes longer time, and affects the speed of uplink data transmission.
In various wireless communication technologies adopted at the present stage, a high building and more urban obstacles easily block and interfere wireless signals, so that the performance of a wireless network is greatly influenced, meanwhile, the coverage range of a base station antenna is limited, a plurality of base stations are required to be configured for providing wireless coverage in a larger area, and the construction cost is invisibly increased.
The wireless Mesh network is also called a multi-hop (multi-hop) network, and is a new wireless network technology completely different from a traditional wireless network. In a conventional wireless lan, each client accesses the network through a wireless link connected to an Access Point (AP), and users must first access a fixed AP if they want to communicate with each other, and this network structure is called a single-hop network. In the wireless Mesh network, any wireless device node can simultaneously serve as an AP and a router, each node in the network can send and receive signals, and each node can directly communicate with one or more peer nodes. This networking approach may provide more capacity and greater coverage as sites increase.
Therefore, the utility model discloses based on MESH network deployment mode, provide an exempt from wireless data transmission device of authorized frequency channel, have from the network deployment, from the good characteristic of management, selfreparing and self-balancing, support the multiple spot jumper connection, satisfy the network deployment transmission under the multiple node condition.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides an exempt from wireless data transmission device of mandate frequency channel.
The utility model adopts the technical proposal that:
the wireless data transmission device of the unlicensed frequency band comprises an equipment end, an OFDM communication base station and a monitoring end, wherein the OFDM communication base station is used for acquiring operation data of the equipment end and transmitting the operation data to the monitoring end, and the monitoring end is used for receiving and processing the operation data of the equipment end.
The number of the OFDM communication base stations is N, N is larger than or equal to 1, each OFDM communication base station is in communication connection with one equipment end, the N OFDM communication base stations are divided into N groups according to areas or quantity, N is larger than or equal to 1, and each group is provided with at least one OFDM communication base station which is in communication connection with the monitoring end; each OFDM communication base station is provided with a communication module, a plurality of OFDM communication base stations in each group are networked and communicated through the communication module, and the plurality of OFDM communication base stations in each group are communicated with the OFDM communication base stations connected to the monitoring end in an optimal path in an interactive mode through the communication module.
The technical scheme of the further improvement of the technical scheme is as follows:
1. as a preferable scheme: the realization of the optimal path comprises that the multiple OFDM communication base stations in each group realize the communication among the multiple OFDM communication base stations always in the shortest path by using the MIMO technology through the MESH networking mode.
2. As a preferable scheme: the communication module is one or more of a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module; when the communication modules are various, the communication modules can be freely switched when interactive communication is carried out among a plurality of OFDM communication base stations; the realization of the optimal path comprises that the multiple OFDM communication base stations in each group are freely switched through multiple communication modules to realize the communication between the multiple OFDM communication base stations and the OFDM communication base station connected to the monitoring end by the most effective path.
3. As a preferable scheme: the communication module is composed of four modules, namely a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module.
4. As a preferable scheme: the communication connection between the OFDM communication base station and the equipment end is wired and/or wireless communication connection, and the communication connection between the OFDM communication base station and the monitoring end is wired and/or wireless communication connection.
5. As a preferable scheme: the monitoring end comprises a switch, a video recorder, a display, a server and an operation platform; the OFDM communication base station is in wired and/or wireless communication connection with the switch, the switch is in wired communication connection with the video recorder and the server respectively, the display is in wired communication connection with the video recorder, and the server is in wired communication connection with the operating platform.
6. As a preferable scheme: when the OFDM communication base station is in wired communication connection with the switch, the OFDM communication base station and the switch both support gigabit standard network interfaces.
7. As a preferable scheme: the OFDM communication base station is a network bridge.
Because of the application of the technical scheme, compared with the prior art, the utility model have following advantage and effect:
the utility model discloses a data transmission technique has the good characteristic of ad hoc network, self-management, selfreparing and self-balancing, supports the multiple spot jumper connection, satisfies the network deployment transmission under the multiple node condition.
The data transmission technology of the utility model can adopt a multi-frequency band and multi-communication combined transmission mode according to different requirements; running data of all states of the equipment end can be transmitted back, the running states, faults and the like of the equipment end can be remotely controlled at the background, and real-time video monitoring of the equipment operation field is achieved; meanwhile, the intelligent and automatic scheduling equipment operation path is realized by using the functions of computer server management and big data processing, and the matching with the instruction data is realized.
The utility model discloses realize always with the OFDM communication base station interactive communication of optimal path and being connected to the control end between a plurality of OFDM communication base stations of every group.
When the equipment end of the utility model is a camera, the large-flow video transmission can be realized, and the equipment end is applied to a video monitoring system; the movable data transmission device can be fixedly installed and can be applied to a movable environment, is applied to various large projects such as movable vehicles, ships, robots and the like, and is high in transmission stability, strong in environmental adaptability, anti-interference and capable of achieving large data transmission.
Drawings
Fig. 1 is a schematic structural diagram of a wireless data transmission device system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the networking structure between a plurality of network nodes of the present invention.
Wherein: 1. a network node; A-I denotes different network nodes in each group, E1Representing dynamic network nodes, E2Representing dynamic network nodes E1The network node after moving to a new position; 2. a switch; 3. a monitoring end; in fig. 2, four different line-type connecting lines between any two adjacent network nodes represent four different communication modules.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
the implementation provides an unlicensed frequency band wireless data transmission method, an unlicensed frequency band wireless data transmission device and a networking method.
Referring to fig. 1, the unlicensed frequency band wireless data transmission device includes an equipment terminal, an OFDM communication base station and a monitoring terminal, where the OFDM communication base station is configured to collect operation data of the equipment terminal and transmit the operation data to the monitoring terminal, and the monitoring terminal is configured to receive and process the operation data of the equipment terminal.
The number of the OFDM communication base stations is N, N is larger than or equal to 1, each OFDM communication base station is in communication connection with one equipment end, the N OFDM communication base stations are divided into N groups according to areas or quantity, N is larger than or equal to 1, and each group is provided with at least one OFDM communication base station which is in communication connection with the monitoring end; each OFDM communication base station is provided with a communication module, a plurality of OFDM communication base stations in each group are networked and communicated through the communication module, and the plurality of OFDM communication base stations in each group are communicated with the OFDM communication base stations connected to the monitoring end in an optimal path in an interactive mode through the communication module.
Specifically, in this embodiment, the OFDM communication base station and the device end are in wired communication connection, and one OFDM communication base station in each group is in wired communication connection with the monitoring end; the monitoring end comprises a switch, a video recorder, a display, a server and an operation platform; the switch is respectively in wired communication connection with the video recorder and the server, the display is in wired communication connection with the video recorder, and the server is in wired communication connection with the operating platform; both the OFDM communication base station and the switch support gigabit standard network interfaces.
Specifically, the OFDM communication base station of the present embodiment is a bridge, which is a preferred embodiment, but not limited thereto, and the scope of the invention should not be limited thereto.
The realization of the optimal path comprises that the multiple OFDM communication base stations in each group always realize the shortest path communication among the multiple OFDM communication base stations by using the MIMO technology through the MESH networking mode.
The communication module is one or more of a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module. Specifically, the communication module in this embodiment is composed of four modules, namely a 900MHz module, a 1.4GHz module, a 2.4GHz module, and a 5.8GHz module, which are respectively disposed on the OFDM communication base stations, and these communication modules can be freely switched when a plurality of OFDM communication base stations perform interactive communication; the realization of the optimal path comprises that the communication between the OFDM communication base stations of each group is realized by freely switching the four communication modules, so that the OFDM communication base stations always communicate with the OFDM communication base station connected to the monitoring end by the most effective path.
The method for transmitting the wireless data in the unlicensed frequency band comprises the following steps: the method comprises the steps of acquiring operation data of an equipment end through an OFDM communication base station, determining an optimal path through networking of the OFDM communication base station and an adjacent OFDM communication base station, transmitting the operation data of the equipment end to a monitoring end through the optimal path, and receiving and processing the operation data through the monitoring end.
The determination of the optimal path comprises: each OFDM communication base station in each group and the adjacent OFDM communication base station are networked by an MESH networking mode by utilizing the MIMO technology to determine the shortest path between each OFDM communication base station and the adjacent OFDM communication base station; and in the process that each OFDM communication base station of each group communicates with the adjacent OFDM communication base stations according to the shortest path, each OFDM communication base station of each group always communicates with the optimal communication module, so that the OFDM communication base stations can always communicate with the OFDM communication base station connected to the monitoring end through the most effective path.
The determination of the optimal communication module is as follows: if the current OFDM communication base station communicates with an adjacent OFDM communication base station by using the current communication module but is greatly interfered by the environment, if the communication modules of any two adjacent OFDM communication base stations are various, the communication modules are switched to the rest other communication modules for communication by automatic search or jump to the adjacent other OFDM communication base stations until the communication quality of the current communication module is optimal; if the communication modules of any two adjacent OFDM communication base stations are one, the current OFDM communication base station always selects the OFDM communication base station with the communication module with the best communication quality from the adjacent OFDM communication base stations for communication.
The determination of the optimal path in this example includes:
determining a shortest path, wherein each OFDM communication base station in each group is networked with adjacent OFDM communication base stations by using an MIMO technology through an MESH networking mode, and the shortest path between each OFDM communication base station and the adjacent OFDM communication base stations is determined;
determining the most effective transmission path, wherein in the process that each OFDM communication base station of each group communicates with adjacent OFDM communication base stations according to the shortest path, each OFDM communication base station of each group always communicates with each other through an optimal communication module, so that the OFDM communication base stations can always communicate with the OFDM communication base stations connected to the monitoring end through the most effective path; the determination of the optimal communication module is as follows: if the current OFDM communication base station communicates with an adjacent OFDM communication base station by using the current communication module but is greatly interfered by the environment, if the communication modules of any two adjacent OFDM communication base stations are various, the communication modules are switched to the rest other communication modules for communication by automatic search or jump to the adjacent other OFDM communication base stations until the communication quality of the current communication module is optimal; if the communication modules of any two adjacent OFDM communication base stations are one, the current OFDM communication base station always selects the OFDM communication base station with the communication module with the best communication quality from the adjacent OFDM communication base stations for communication.
In the embodiment, the communication module is composed of a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module which are respectively arranged on the OFDM communication base station; in the process that each OFDM communication base station of each group communicates with adjacent OFDM communication base stations according to the shortest path, through the preset of a system software program, the optimal communication module can be selected from four modules of a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module to communicate among the OFDM communication base stations; if a certain OFDM communication base station communicates with an adjacent OFDM communication base station by using a 5.8GHz module but is greatly interfered by the environment, automatically switching to a 900MHz module, a 1.4GHz module or a 2.4GHz module, and if the path is not available, automatically switching to other paths until the communication quality of the current communication module is optimal; the OFDM communication base stations can always communicate with the OFDM communication base stations connected to the monitoring end through the most effective path.
The networking method is realized by an MESH networking mode based on the MIMO technology, each OFDM communication base station and a device end in communication connection with the OFDM communication base station form a network node, MESH network distribution is formed between each network node and a network node adjacent to the network node, and the state of each network node is static and/or dynamic. In practical applications, these dynamic network nodes may be considered as network nodes provided on a moving object such as a moving vehicle, a ship, a robot, etc.
In the actual data transmission process, when the position of a certain network node changes, the original mesh network distribution is broken, a new mesh network distribution is formed, and each network node can always establish mesh network connection with the adjacent network node no matter whether the network node is a static network node or a dynamic network node; the network nodes can realize mutual intercommunication in a group network, do not need core network nodes, can be connected to other network nodes in the network immediately after any network node is disconnected, and can always transmit equipment end operation data to an OFDM communication base station which is in communication connection with a monitoring end in the most effective shortest distance through mesh network distribution in a wireless multi-hop mode and transmit the equipment end operation data to the monitoring end through the OFDM communication base station.
Network node E as shown in FIG. 21The location is to form a mesh network distribution with its neighboring nodes when the network node moves to E2New mesh network distribution instant at locationAnd (4) forming. In practice as A as adjacent B, D, E1F forms a mesh network connection, the path from A to B is shortest, but the interference of the 5.8G module between A and B is larger, the A and B can be directly switched to a 900MHz module, a 1.4GHz module or a 2.4GHz module until the communication quality of the current communication module is optimal; if A passes to B but B does not accept A's transmission request, then A is at D, E1And F, selecting the shortest path to ensure the shortest and most effective transmission path.
The following describes different applications of the unlicensed frequency band wireless data transmission technology:
1. the large-flow video transmission technology comprises the following steps: when the equipment end is a camera alone, large-flow video can be realized
Transmission, applied to a video monitoring system; the movable data transmission device can be fixedly installed and can be applied to a movable environment, is applied to various large projects such as movable vehicles, ships, robots and the like, and is high in transmission stability, strong in environmental adaptability, anti-interference and capable of achieving large data transmission.
2. Emergency scene: wireless emergency communication equipment end comprising unmanned aerial vehicle, high-definition fixed network dome camera and the like
Data acquisition is carried out, and interaction of video, audio, data information and the like between the monitoring end and each equipment end is realized through MESH networking communication; the monitoring end acquires the returned data through each equipment end to know the field conditions near each equipment end and sends a scheduling instruction. The emergency communication command guarantee has a key influence on the speed and efficiency of emergency disaster relief, the area of a communication field is wide, the environment is complex, more personnel and equipment are provided, and after data transmission is realized through emergency communication networking, the emergency monitoring end can coordinate the personnel and equipment on the terminal field, so that the function of each equipment end is fully exerted.
3. Container terminal yard: the equipment end is a gantry crane, and the network is organized through MESH based on MIMO technology
The method forms a large communication network for a control system of the gantry crane, and realizes intelligent and automatic scheduling of the operation path of the gantry crane and real-time monitoring and fault management of all gantry cranes with a wharf by using computer management and large data processing functions.
With respect to the above embodiments, the present embodiment is further explained and the possible variations are described as follows:
ofdm (orthogonal Frequency Division multiplexing) orthogonal Frequency Division multiplexing is a high-speed transmission technique in a wireless environment. Dividing a given channel into a plurality of orthogonal sub-channels in a frequency domain, modulating each sub-channel by using a sub-carrier, and transmitting each sub-carrier in parallel; OFDM can be considered a modulation technique and a multiplexing technique, which is a multi-carrier (multicarrier-rie) transmission method.
2. The wireless MESH network (wireless MESH network) adopts a MESH topology structure, and is a multipoint-to-multipoint network topology structure. In such a MESH network structure, each network node is MESH-interconnected in a wireless multi-hop (hopping) manner through neighboring other network nodes. Intercommunication among the group networks can be realized, core network nodes are not needed in the networks, any network node is disconnected, and the group networks can be connected to other network nodes in the networks immediately.
3. The MIMO (Multiple-Input Multiple-Output) technology is to use a plurality of transmitting antennas and receiving antennas at a transmitting end and a receiving end, respectively, so that signals are transmitted and received through the plurality of antennas at the transmitting end and the receiving end, thereby improving communication quality. The multi-antenna multi-transmission multi-receiving system can fully utilize space resources, realize multi-transmission and multi-reception through a plurality of antennas, and improve the system channel capacity by times under the condition of not increasing frequency spectrum resources and antenna transmitting power.
4. The number of the OFDM communication base stations is n, n is more than or equal to 1, n can be any integer of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 20, 25, 30, 35, 40, 45, 50, 100 and the like, and the specific value of n is determined according to the arrangement number of the equipment ends required by the actual application scene; the N OFDM communication base stations can be further divided into N groups according to the area or the number, N is larger than or equal to 1, N can be any integer of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 20, 30, 35, 40, 50, 60, 70 and the like, each OFDM communication base station has an independent physical address, and in practical application, a geographical area can be used as a monitoring range to monitor the operation data of a device end connected with each independent OFDM communication base station in the area, or the operation data can be grouped according to the number according to actual needs.
5. In this embodiment, the communication module is composed of four modules, namely a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module, which are respectively disposed on the OFDM communication base station, and is only a better solution, but the protection scope of the present invention cannot be limited thereby, the communication module may be composed of one module of 900MHz, may be composed of two modules of 900MHz and 1.4GHz or two modules of 1.4GHz and 2.4GHz, and may also be composed of three modules of 900MHz, 1.4GHz and 2.4GHz, and so on, and in short, the communication module may be one or more of a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module; in practical applications, which communication film or which communication module combination is used specifically depends on the needs of actual situations, for example, four modules, i.e., a 900MHz module, a 1.4GHz module, a 2.4GHz module, and a 5.8GHz module, are all open unlicensed frequency bands from the global scope, but only some of them are disclosed specifically in each country or region.
The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that may be conceived by those skilled in the art are within the scope of the present invention.
Claims (8)
1. Exempt from authorized frequency channel wireless data transmission device, its characterized in that: the OFDM communication base station is used for acquiring operation data of the equipment end and transmitting the operation data to the monitoring end, and the monitoring end is used for receiving and processing the operation data of the equipment end;
the number of the OFDM communication base stations is N, N is larger than or equal to 1, each OFDM communication base station is in communication connection with one equipment end, the N OFDM communication base stations are divided into N groups according to areas or quantity, N is larger than or equal to 1, and each group is provided with at least one OFDM communication base station which is in communication connection with the monitoring end; each OFDM communication base station is provided with a communication module, a plurality of OFDM communication base stations in each group are networked and communicated through the communication module, and the plurality of OFDM communication base stations in each group are communicated with the OFDM communication base stations connected to the monitoring end in an optimal path in an interactive mode through the communication module.
2. The unlicensed frequency band wireless data transmission device of claim 1, wherein: the realization of the optimal path comprises that the multiple OFDM communication base stations in each group realize the communication among the multiple OFDM communication base stations always in the shortest path by using the MIMO technology through the MESH networking mode.
3. The unlicensed frequency band wireless data transmission device of claim 1, wherein: the communication module is one or more of a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module; when the communication modules are various, the communication modules can be freely switched when interactive communication is carried out among a plurality of OFDM communication base stations; the realization of the optimal path comprises that the multiple OFDM communication base stations in each group are freely switched through multiple communication modules to realize the communication between the multiple OFDM communication base stations and the OFDM communication base station connected to the monitoring end by the most effective path.
4. The unlicensed frequency band wireless data transmission device of claim 3, wherein: the communication module is composed of four modules, namely a 900MHz module, a 1.4GHz module, a 2.4GHz module and a 5.8GHz module.
5. The unlicensed frequency band wireless data transmission device of claim 1, wherein: the communication connection between the OFDM communication base station and the equipment end is wired and/or wireless communication connection, and the communication connection between the OFDM communication base station and the monitoring end is wired and/or wireless communication connection.
6. The unlicensed frequency band wireless data transmission device of claim 1, wherein: the monitoring end comprises a switch, a video recorder, a display, a server and an operation platform; the OFDM communication base station is in wired and/or wireless communication connection with the switch, the switch is in wired communication connection with the video recorder and the server respectively, the display is in wired communication connection with the video recorder, and the server is in wired communication connection with the operating platform.
7. The unlicensed frequency band wireless data transmission device of claim 6, wherein: when the OFDM communication base station is in wired communication connection with the switch, the OFDM communication base station and the switch both support gigabit standard network interfaces.
8. The unlicensed frequency band wireless data transmission device of claim 1, wherein: the OFDM communication base station is a network bridge.
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Assignee: Jiaxing Yilian Technology Development Co.,Ltd. Assignor: SHANGHAI BINY ELECTRIC Co.,Ltd. Contract record no.: X2023310000135 Denomination of utility model: Unauthorized frequency band wireless data transmission device Granted publication date: 20200403 License type: Common License Record date: 20230705 |
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