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。
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
Coordinated operation
Forest fire prevention
Urban integrated joint rescue
Counter-terrorism and stability maintenance
Border, maritime and border control
