RU206119U1 - DEVICE FOR CREATING A WIRELESS MULTI-CHANNEL COMMUNICATION - Google Patents

Abstract

The utility model relates to the field of wireless communication. The technical result consists in ensuring the protection of transmitted data in a wireless mesh network. The device for creating wireless multichannel communication contains a wireless network card, random access memory, flash memory, a small-sized microcomputer capable of implementing a network data transfer protocol, a battery for the possibility of autonomous operation of the device, an evaluation board made with the possibility of implementing a noise reduction algorithm when organizing voice communication between network router nodes, a temperature sensor, a display; moreover, an encryption algorithm based on Steiner triples is used by a small-sized microcomputer to ensure the protection of transmitted data in a mesh network. 2 ill.

Description

The utility model relates to infocommunication technologies and communication systems and can be applied in the economic sector of the service sector: in construction, in transport, in trade.

The known data transfer protocol ZigBee Pro (patent CN 103442370 A, IPC: H04W 16/18, H04W 84/18) is used on the ZigBee hardware module, which, with low power consumption, is capable of supporting a self-healing mesh (mesh) network topology with relaying and routing messages, with the ability to select a routing algorithm, depending on the state of the network.

The disadvantage of this invention is that the size and type of transmitted data is limited: it is possible to transmit only small data, for example, data from sensors of smart home devices.

Known data transmission protocol ZigBee IP (patent WO 2008027615 A1, IPC: H04L 12/28; H04L 12/46) used in routers ZigBee Router. At the network layer of the protocol, IPv6 addressing and routing operates, network devices also receive an IPv6 address and have the ability to directly communicate over any IP networks using the standard TCP / IP stack.

The disadvantage of the known invention is that the Zigbee IP protocol used on the router has a limit on the number of nodes in the amount of twenty nodes that can be used in one network.

Known is a voice communication system over IP-protocol, using unlicensed frequencies and including a mobile phone (patent RU 2536876 C2, H04M 1/253, publ. 12/27/2014 bull. No. 12). The voice communication system contains at least one mobile phone that supports Bluetooth technology and has the ability to install software, at least one Bluetooth access point that provides a connection to the Internet, at least one VOIP server connected to the Internet, and provides connections for a call in the form of PSTN, GSM, VOIP, etc. connections, a software client is provided that serves as a call center and manages outgoing and incoming calls to be made via a Bluetooth connection between a mobile phone and a Bluetooth access point, and also over the Internet with control connections to and from the VOIP server.

The disadvantage of this invention is that its use requires stable access to the Internet and only voice communication is possible, that is, the possibility of transferring other types of data is not provided.

Known is a multifunctional ultra-high-speed mesh network switch (patent RU 2403673 C1, H03D 7/00, H04B 7/00, publ. 10.11.2010 bul. No. 31), which implements the transformation of discrete information into data packets with the transmission of these packets over communication networks ... The multifunctional switch includes a full-duplex software-controlled transceiver 60-100 GHz, an electronically controlled microwave switch, microwave filters, a gateway with a low-speed broadband adapter, such as Wi-Fi, subscriber access networks, a physical interface connected to a wired local area network segment, such as Gigabit Ethernet, microprocessor-based module for backbone network radio protocol support and control of the above-named functional units. The microprocessor module is connected via the control bus to the input / output of the transi-vera control channel, the input / output of the microwave switch control channel and the input / output of the control channel of the subscriber access gateway, and is connected via the data bus to the built-in switch of the second level, with input / output transceiver data bus and I / O of the broadband subscriber access gateway. The Layer 2 switch has one or more physical Gigabit Ethernet interfaces. The microwave input / output of the transceiver is connected to the microwave switch connected between the transceiver and the microwave filters.

The disadvantage of the known multifunctional switch is that the ability to connect a large number of users to the network is feasible only through access using broadband radio access technology (Wi-Fi, WiMAX), as well as through a wired LAN segment.

Known cross-platform communication cycle detection system in the network (patent US 20190059041 A1, published 02/21/2019), operating on the principle of combining devices, with connection technology via Wi-Fi or Bluetooth, into a single local area network for transferring the following types of data: text, images, videos. This patent describes a method for detecting a communication cycle between devices of a created local computer network, including receiving at a node of an ad hoc network a message containing a commutative value, wherein the node is associated with a node identifier, and the commutative value refers to node identifiers associated with one or more nodes along the path , and the message was passed regardless of the order of the nodes; and determining, by one or more processors, to detect a communication cycle based on whether the commutative value is identical to the previously obtained commutative value.

The disadvantage of this system for detecting the communication cycle in the network is the need to connect to the Internet, at least one of the devices participating in the local network, which greatly complicates the deployment of the network in conditions where the Internet connection is difficult or impossible.

A wireless mesh router (patent CN 102573121 A, H04W 84/18, H04W 88/14, published on July 11, 2012), which provides data transmission based on the IP routing table, was chosen as a prototype. This product is a kind of wireless mesh router that belongs to wireless communication equipment. This router consists of a wireless network card, a data processing section and three 10M / 100M network interface parts. The network process chip of the data processing section is the main control element, expands the storage and temporary data so that the RAM and flash memory chip are used for the program. The microcircuit communicates by letter with the wireless network card and issues the network processes microcircuit after being processed by the network card. The 10M / 100M network interface is for wireless data output to receive the request that the forwarding data be imported. The wireless mesh router allows you to quickly and efficiently create networks, and the right user can customize the large-scale wireless mesh networking word. Each node on the network contains a node discovery message by a sending and receiving node implementing the routing table framework, link analysis, and route implementation. Redundant route design can ensure that it does not interfere with normal data transmission in a situation where individual routers are damaged or malfunctioning, and improves anti-interference capabilities and bandwidth stability at the radio link level, and saves resources of limited frequency spectrum.

A disadvantage of the invention is that in order to implement the data transmission route, the root node routing table must contain an Internet connection gateway node.

The technical problem of the utility model is aimed at creating a device that organizes secure wireless communication based on a self-organizing mesh topology for implementing multichannel voice communication via a Bluetooth headset and transmission

other types of data (video, text) to devices with a built-in Wi-Fi module via a secure data transfer protocol without a direct connection to the Internet.

Technical result - ensuring the protection of transmitted data in a wireless mesh network.

To solve a technical problem and achieve a technical result in a device for creating a wireless multichannel communication that stores a distributed routing hash table that allocates unique IP addresses to network router nodes, and contains a wireless network card, RAM, flash memory, a small-sized microcomputer with the possibility of implementing a network protocol for data transmission, a battery for the possibility of autonomous operation of the device, an evaluation board made with the possibility of implementing a noise suppression algorithm when organizing voice communication between network routers and connected to a small-sized microcomputer, a temperature sensor connected to a bidirectional communication bus of a direct control output of a small-sized microcomputer, a display connected to a small-sized microcomputer, to a battery, to a temperature sensor for transmitting data from a temperature sensor and displaying IP addresses, according to a utility model , to ensure protection of transmitted data in a mesh network, a small-sized microcomputer uses an encryption algorithm based on Steiner triples, which is a division of the transmitted data into many shares, while the distribution of the share among the set of nodes, each of which receives its share, is based on the use of a peer-to-peer matroid built on triples in the algorithm Steiner.

The essence of the utility model is illustrated by figures.

FIG. 1 is a schematic diagram of a device for creating wireless multi-channel communication; in fig. 2 shows a diagram of the nodes of the mesh network of wireless multichannel communication created by the device.

The device for creating wireless multichannel communication (Fig. 1) contains a Raspberry Pi microcomputer - 1, RGB LED - 2, TMDSEVM6657LS DSP evaluation board - 3, D18B20 temperature sensor - 4, OLED - display - 5, device on / off button - 6 , the button for turning on the temperature indicator - 7, the button for turning off the temperature indicator - 8, the button for turning on the display of IP addresses - 9, the button for turning off the display of IP addresses - 10.

A small-sized microcomputer Raspberry Pi 1 (Fig. 1) is connected to buttons 6-10 via the GPIO direct control I / O interface, where each of the buttons is connected with two separate SMD resistors of 820 Ohm and 15 kOhm, respectively. Small-sized microcomputer 1 is designed to implement a network protocol for data transmission in a mesh network in a secure design, by using a secret sharing algorithm on Steiner triplets and storing a distributed routing hash table. Mesh nodes are devices with built-in Bluetooth, for example, a Bluetooth headset or devices with both built-in Wi-Fi and Bluetooth modules, allowing them to communicate with each other at the network layer of the OSI model. Three channels of RGB LED 2 are connected to the GPIO direct I / O interface through resistors 2 through 4 (not indicated in the figures). Temperature sensor 4 is connected to the bi-directional 1-Wire communication bus of the GPIO direct control pin of the Raspberry Pi 1 microcomputer, and to a resistor (not indicated in the figures). The device for creating a wireless multichannel communication contains an OLED display 5 connected to a microcomputer 1 at the point of zero potential GND, to a power source point (battery 11 in Fig. 2), to a temperature sensor 4 through a serial asymmetric bus for transmitting data from a temperature sensor 4 and showing IP addresses. The device also contains evaluation board 3 for implementing the noise reduction algorithm when organizing voice communication between router nodes. Evaluation board 3 is connected to microcomputer 1 via an asynchronous UART transceiver.

For the possibility of autonomous operation of the wireless multichannel communication device, a lithium-ion battery 11 (battery) (Fig. 2) of direct current, with an output voltage of 5 V, a battery capacity of 3800 mA / h and an output current of 1, is connected to a small-sized microcomputer 1 via a universal serial bus, 8 A.

The case of a wireless multichannel communication device with a connector for connecting a lithium-ion battery via a USB port, with holes for five buttons 6-10 (Fig. 1) and with a place for outputting an RGB LED 2, can be made of metal or high-strength plastic.

The diagram of the nodes of the mesh network created by the wireless multi-channel communication device (FIG. 2) contains a description of the interaction between the nodes of the network. The device for creating wireless multi-channel communication 11 is connected to a lithium-ion battery 12. Connection to the device for creating wireless multi-channel communication AND a Bluetooth headset occurs via a Bluetooth connection, the first router node 13 of the mesh network is formed. A device with built-in Wi-Fi and Bluetooth modules is connected to a device to create a wireless multi-channel communication 11 by connecting it to a router node 13 via a Bluetooth connection, or via a Wi-Fi module - without the need to connect to the Internet at the same time, - this forms the second mesh router 14. Voice communication between the router node 13 and the next Bluetooth headset is organized by forming the router node 15 by automatically assigning it from the distributed hash table of the routing device to create a wireless multichannel communication 11 IPv6 address according to the 6LoWPAN interworking standard. Communication for transferring other types of data between router nodes 14 and 16 is accomplished by automatically assigning nodes from the device's distributed hash table to create a wireless multichannel communication 11 IPv6 address over the OSI model network layer.

The wireless multi-link device operates as follows way. The device for creating wireless multichannel communication is turned on using the on / off button 6 (Fig. 1). The green LED on RGB LED 2 lights up. When connected to a device to create a wireless multichannel communication Bluetooth headset using a Bluetooth module installed in the microcomputer 1 (Fig. 1), the first router node of the mesh network 13 is created (Fig. 2): a Bluetooth headset from a distributed hash table routing stored in the memory of microcomputer 1 (Fig. 1) is assigned a random unique IPv6 address from the frequency range fc00 :: / 8. The created router node 13 (Fig. 2) will be able to interact with other similar router nodes (router node 15 in Fig. 2) through the 6LoWPAN interworking standard over the Internet protocol IPv6. In the process of transmitting streaming voice messages through the router nodes (routing node 13 and routing node 15 in Fig. 2), the noise suppression algorithm is carried out through the evaluation board 3 (Fig. 1), while the method of optimal signal addition is used, in which each the signal is assigned a weight determined from reaching the maximum signal-to-noise function. It is possible to connect to a device to create a wireless multichannel communication 11 (Fig. 2) of a routing node 14 - a device with built-in Wi-Fi and Bluetooth modules, by pairing it via Bluetooth with a router node 13, in this case a switch node is created, acting as a one-way bridge, and allowing the transfer of data to the node-router 15, provided that this node has not previously been connected to any other node in the mesh network. It is possible to connect the routing node 14, through the built-in Wi-Fi module, directly to the device for creating wireless multi-channel communication 11. In this case, the created routing node 14 from the distributed routing hash table stored in the memory of the microcomputer 1 (Fig. 1), a random unique IPv6 address from the fc00 :: / 8 frequency range is assigned. The created routing node 16 (Fig. 2) can transmit various types of data to similar routing nodes, for example, the routing node 14 via the Internet protocol IPv6. The device for creating wireless multi-link 11 acts as a central DNS server, responding to incoming DNS queries, which are information about all IPv6 addresses of the mesh network router nodes. When you press the button to enable the mode of displaying IP addresses 9 (Fig. 1) of the device for creating wireless multi-channel communication 11 (Fig. 2), the IPv6 addresses of all new routing nodes will begin to appear sequentially on the display 5 (Fig. 1). When you press the button to turn off the display of IP addresses 10 on display 5, the IPv6 addresses of all new routing nodes will disappear. Transmitted data between router nodes is encrypted by implementing a secret sharing scheme on a nonlinear Steiner triple system. The device for creating wireless multichannel communication 11 (Fig. 2) uses an encryption algorithm based on Steiner triplets to ensure the protection of transmitted data. The used encryption algorithm of the mesh network protocol on the microcomputer 1 (Fig. 1) is the division of the transmitted data into a set of shares (secrets). The method of distributing a share (secret) among a set of participants (nodes), each of which receives its share, is based on the use of a peer-to-peer matroid built on Steiner's triples in the algorithm and corresponding to an ideal secret sharing scheme. When you press the temperature indicator 7 on button, the display 5 will show the temperature of the microcomputer 1 measured by the temperature sensor 4. When you press the temperature indicator off button 8, the temperature indicator of the microcomputer 1 will disappear on the display 5. Pressing the device on / off button 6 turns off the device wireless multi-channel communication, and data transmission is suspended, while LED 2 lights up red. Due to the connected lithium-ion battery 12 to the small-sized microcomputer 1, the wireless multichannel communication device operates autonomously.

The proposed utility model makes it possible to organize a secure, independent of the Internet connection, wireless mesh network for multichannel voice communication without interference and transmission of other types of data (text, video).

At present, the prior art does not know the use of autonomous and small-sized devices that allow organizing a mesh network:

completely independent from the Internet;

organizing multi-channel voice communication between independent Bluetooth devices;

implementing a built-in noise reduction algorithm when organizing multichannel voice communication;

using an encryption algorithm based on Steiner triplets to protect the transmitted data.

Thus, the declared utility model meets the “novelty” criterion.

Implementation of a mesh network protocol on a microcomputer, an evaluation board with a noise reduction algorithm, an encryption algorithm based on Steiner triplets in a single autonomous and small-sized device, contributes to an increase in the level of technical capabilities in the field of ensuring the protection of transmitted data in a wireless mesh network.

The declared utility model is industrially applicable, since it can be applied: in the field of construction - residential high-rise construction, industrial construction, construction of sports and shopping and entertainment establishments; in private security companies;

in the shops of industrial enterprises in the light and extractive industries; and at other enterprises - bakery factories, automobile factories, mechanical factories; in the field of transport - freight and passenger rail transport, river transport, sea transport; in commercial enterprises that need a low-cost, isolated and secure network.

The application and use of the proposed device does not cause any difficulties and can be carried out by any person without special training. In the manufacture and use of this device, objects and materials produced by the industry and which are in the open trade are used.

Claims (1)

A device for creating a wireless multichannel communication that stores a distributed routing hash table that allocates unique IP addresses to network router nodes and contains a wireless network card, RAM, flash memory, a small-sized microcomputer capable of implementing a network data transfer protocol, a battery for autonomous operation of the device, an evaluation board capable of implementing a noise suppression algorithm when organizing voice communication between network router nodes and connected to a small-sized microcomputer, a temperature sensor connected to a bi-directional communication bus of a direct control output of a small-sized microcomputer, a display connected to a small-sized microcomputer, to the battery, to the temperature sensor for transmitting data from the temperature sensor and displaying IP addresses, characterized in that to ensure the protection of transmitted data in the mesh network with a small-sized microcomputer The encryption algorithm based on Steiner triples is an encryption algorithm, which is a division of the transmitted data into many shares, while the distribution of the share among the set of nodes, each of which receives its share, is based on the use of a peer-to-peer matroid built on Steiner triples in the algorithm.

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