Trango shows new mesh network solution
Mesh networks, in which each node is both a receiver and a repeater — and which are self-healing, because if one node has problems, nodes near by compensate for its absence — have become more and more popular in emergency and first response applications. Motorola, for example, noted this, and a couple of years ago acquired Maitland, California-based MeshNetworks, one of the technology’s pioneers. Now, San Diego, California-based Trango Broadband Wireless, a manufacturer of fixed broadband wireless equipment, introduced its HD Mesh system for metropolitan area networks, public Internet access, and government and security applications. The system includes a self-healing hi-performance backbone ring capable of a throughput of up to 45 Mbps and available in multiple frequency band options, including the 4.9 GHz licensed band for safety personnel, first responders, and homeland security applications.
Trango’s HD Mesh wireless backbone radios are available in 4.9, 5.3, 5.4, and 5.8 GHz frequency bands. Each HD Mesh micro-cell base station includes an environmentally controlled enclosure, a nine-port router, and it can support up to six additional Ethernet devices (cameras, access points, etc.). The system is also designed to support WiMAX-ready radios and 802.11g for WiFi hotspots. Also, the platform includes Layer 2 and Layer 3 support such as QoS, VLAN, NAT, DHCP, and PPPoE. OSPF and BGP self-healing routing protocols are also included.
Todd Easterling, vice president of marketing for Trango, correctly notes that typical mesh networks rely on the availability of point-to-point-to-point wireless repeating. The result is that the bandwidth available to each node of most mesh systems must be shared between, on the one hand, providing Internet access or bandwidth for that node, and, on the other hand, providing the backbone link for other nodes. The more nodes the network has, the lower the performance of the networks as a whole. When users try to send VoIP, surveillance video, or other triple play services over this typical mesh network, the quality of transmission degrades even more. Trango’s solves this problem by maintaining a robust and redundant mesh backbone.
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