首页 Product center Digital trunking system MESH AD hoc network system

System overview

Beifeng MESH wireless ad-hoc network system is a mobile broadband multimedia communication system designed with a new concept of "wireless mesh network"。The system adopts the distributed network architecture without center AD hoc network, the same frequency network, multi-hop relay, all nodes can realize the real-time interaction of multi-channel voice, data, image and other multimedia information under the condition of non-line-of-sight and random fast movement。The system has powerful functions and excellent performance, and supports any network topology, such as point-to-point, point-to-multipoint, chain relay, mesh network and hybrid dynamic topology。The whole system is convenient to deploy, flexible to use, simple to operate, and easy to maintain。

System advantage

Emergency communication plays the role of timely, accurate and unimpeded transmission of first-hand information when an emergency occurs。When an emergency occurs, the emergency communication system needs to solve the problems such as congestion blocking caused by sudden traffic peak in the public network, base station damage caused by fire, earthquake, or terrorist attack, no signal coverage in remote areas, and communication security required when performing special tasks。According to the actual needs and application scenarios of emergency communication, Beifeng Communication combined with new communication technology, to create a MESH wireless AD hoc network system, the overall design idea to meet the particularity of emergency communication。

  • It is a centreless system with the same frequency, all nodes have the same status, and can automatically form a wireless mesh network after being turned on, and communicate with each other in real time. A single frequency point supports two-way communication with TDD, and any node device can be used as an end node, a relay node or a command node in the network。

    Centralized co-frequency AD hoc network

  • The MESH network supports 32 nodes for rapid deployment and flexible networking。When nodes move rapidly, the routing relationship between multiple nodes is automatically recalculated and a new routing table is quickly generated as the topology changes。

    Multi-node fast and flexible networking

  • MESH wireless AD hoc network system supports network topology, such as point-to-multipoint, chain relay, mesh network and hybrid network。


    Arbitrary network topology

  • The peak data bandwidth of the MESH wireless AD hoc network system is 56Mbps(based on 20MHz carrier bandwidth)。Fast node movement does not affect high data bandwidth services。

    High data bandwidth fast moving

  • The ARQ(Automatic Retransmission Request) transmission mechanism is adopted,Improve data transmission reliability;Built-in sweep function,In the single frequency mode, the frequency network with less interference is selected manually.Intelligent Frequency selection (Optional) In the working mode, you can intelligently select the frequency network without interference,Automatically and effectively avoid interference;Frequency hopping (optional) working mode effectively improve anti-interference, anti-tracking ability。

    Strong anti-interference

  • The channel adopts 64bit key encryption, and must be matched with a number of consistent parameters such as working frequency, carrier bandwidth, communication distance and networking mode to legally access the network。The encryption mode of DES, AES128, or AES256 can also be selected。

    High security and confidentiality

  • The system adopts COFDM modulation technology, which has strong anti-multipath ability. It can rely on excellent diffraction reflection multipath transmission and penetration ability, and then rely on repeater to effectively cover and extend, and realize anti-multipath relay transmission well。

    Resistance to multiple paths

  • When a node in the network fails, the forwarding task originally carried out by the node will be relayed through other nodes and automatically select the transmission path, and the whole network can still work normally。

    Disfigurement resistance

  • MESH wireless AD hoc network system adopts all-IP data transmission design concept, which is easy to interconnect with other systems。

    The all-IP network is interconnected

  • MESH wireless AD hoc network system supports real-time transmission of voice, image, data and positioning information.Built-in WIFI module, using WIFI to associate with external devices for real-time interaction。

    Support multiple services

Application field

The system can be widely used in fire protection, civil air defense, electric power, petroleum, transportation, water conservancy, forestry, radio and television, medical, water and air communications and other sectors,To provide users with reliable, timely, safe and efficient voice, data, video and visual command and scheduling and other rich integrated services,To meet the needs of users in peacetime or emergency wireless broadband communication,Truly achieve "anytime, anywhere on demand"。
  • Coordinated operation

  • Forest fire prevention

  • Urban integrated joint rescue

  • Counter-terrorism and stability maintenance

  • Border, maritime and border control

Multi-node fast and flexible networking

  • Fast route update
  • Intelligent routing
  • Hybrid topology networking

Networking case

Tactical interlocking self-charge

Fire emergency communication command

Regional coverage key distribution control

Emergency rescue command and dispatch

Forest area wireless monitoring guarantee

Ships are working together from coast to sea

The combined transport of the fleet by itself

Urban anti-terrorism and stability command

Security patrols for large events

Subway transparent wireless communication

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solution

This project is mainly composed of Qinling water transmission tunnel, Golden Gorge water project and Sanhekou water project。And up to 98.The 3km Qinling Mountain water tunnel has become a top priority。The maximum buried depth of the tunnel reaches 2012 meters from the ground, which needs to overcome the worldwide problems such as ultra-long distance ventilation, water gushing, mud gushing, rock burst and high temperature geothermal。
Uploaded on 2018-07-17 Views: 9007
Forestry department command and dispatch system solution is a set of intelligent cluster dispatch system fire wireless communication system construction scheme summed up by Beifeng Communication based on years of experience
Uploaded on 2018-07-09 Views: 8142
Combined with dynamic frequency allocation technology, two or more channels can be automatically combined into the same frequency and broadcast network when cross-base station communication is realized.The number of base stations is not limited, and all calls in the same group can be configured as the same frequency and broadcast。The inspection and maintenance of the railway and train industry with long distance, large span, and many and scattered base stations。The same group calls use the same frequency, which can save the system frequency usage of railway train industry and improve the utilization rate;At the same time, when roaming between base stations, the mobile station has the function of smoothing the network across the base station, ensuring continuous voice without interruption, adapting to the complex terrain and environment of the railway industry。
Uploaded on 2017-07-07 Views: 7333