ANYMESH-WL SERIES RADIO HAS BEEN POPULAR AS SOON AS IT WAS LAUNCHED, AND NOW IN ORDER TO MEET THE NEEDS OF OUR CUSTOMERS FOR OEM INTEGRATION, BEIJING WANLAN COMMUNICATION COMPANY HAS RE-DEVELOPED A SMALL VOLUME AND HIGH PERFORMANCE 1.4UGHz MIMO 2W ad hoc network board, which adopts multi-carrier OFDMA+CSMA mode and deeply optimizes the underlying MAC protocol driver. It can build a wireless IP mesh network temporarily, dynamically and quickly without relying on any basic communication facilities, with self-organization, self-recovery, and high anti-indestructibility, and supports multi-hop transmission of multimedia services such as data, voice, and video. It can be used in smart cities, wireless video transmission, field operations, mine operations, temporary meetings, environmental monitoring, public security and fire fighting, anti-terrorism special services, emergency rescue and disaster relief, individual networking, vehicle networking, unmanned aerial vehicles, unmanned vehicles, unmanned ships and other occasions.
The high-performance 1.4GHz MIMO 2W ad hoc network card, as shown in Figure 1, measures 100 x 70 x 15 mm and weighs 75 g. The board is composed of two parts: a protocol processing board and a radio frequency card (which has been integrated), the radio frequency interface is MMCX, providing 2 network ports, 1 TTL data serial port, 1 USB and other interfaces, and the air-to-ground line-of-sight communication is 20~30km.
2. Significant advantages
Strong diffraction ability: It has good anti-multipath interference ability and strong diffraction penetration ability under complex terrain and environmental conditions.
Long transmission distance: using OFDMA+CSMA/CA technology, the receiving sensitivity can reach -98dBm, and the ground-to-air/air-to-air line-of-sight communication can reach 20-30km under 2W transmitting power.
High transmission rate: using multi-carrier OFDM, BPSK/QPSK/16QAM/64QAM adaptive modulation technology, the peak rate can reach 80Mbps under the condition of good signal-to-noise ratio;
Large network scale: The MAC protocol adopts the IEEE802.11 protocol, and the channel resources are dynamically allocated, which can support 32 nodes for networking.
High number of relay hops: The measured number of video relay hops can reach more than 8 hops, which expands network coverage, improves the flexibility of ad hoc networks, and enhances the environmental applicability of network applications.
Simple to use: no professional knowledge required, few configuration parameters, easy to deploy, and ready to use.
3. Performance parameters
Network scale: up to 32 nodes per frequency;
Communication frequency: 1410~1470MHz can be customized, 1MHz step adjustable;
Transmit power: maximum 33dbm (2W), 1dBm step adjustable;
Bandwidth mode: 5 / 10 / 20 MHz;
Communication waveform: multi-carrier OFDM+MIMO;
Carrier modulation: BPSK/QPSK/16QAM/64QAM (adaptive);
Receiver sensitivity: -98dBm @ 5MHz;
Communication distance: 20~30km (ground-to-air/air-to-air line-of-sight);
Communication rate: 1~80Mbps (adaptive);
Transmission delay: average 3ms@5MHz per hop;
Multi-hop capability: 15 hops for short messages, 10 hops for voice, and more than 8 hops for video;
Movement speed: support 200+Km/H high-speed movement;
Start-up time: 45 seconds, network access time: less than 1 second;
Data interface: LAN x 2, TTL x 1, USB x 1;
Power supply requirements: 14~36V/1A;
Power consumption: 4~12W;
Board weight: 85g (excluding case and antenna)
Appearance size: 100 * 70 * 15 mm
Operating temperature: -40~+750C;
4. Functional characteristics
Software architecture: centerless, distributed wireless ad hoc network based on IP system;
Anti-multipath interference: Multi-carrier OFDM modulation has a strong anti-multipath interference force;
Diffraction capability: The L-band has a certain diffraction and penetration force;
Dynamic routing: Layer 2 intelligent routing protocol (active/passive);
Flexibility: strong scalability, nodes can be dynamically added and exited;
Mobility: The maximum movement rate of the tested node is 200 km;
Anti-damage and self-healing: The damage of individual terminals will not affect the normal operation of the network, and it has strong anti-damage ability.
Working mode: point-to-point, point-to-multipoint, multipoint-to-multipoint, mesh network, automatic relay;
IP transparent transmission: with IP transparent transmission function, the host computer only needs to pay attention to the upper-layer application;
Internet expansion: Effectively extend the Internet coverage, any terminal in the network can be used as a gateway, and each node of the ad hoc network can access the Internet through the gateway node;
Configuration management: You can set the channel, bandwidth, power, rate, IP, key and other parameters of the radio;
Status display: It can dynamically display network topology, link quality, signal strength, environmental noise floor, etc.
