High Availability Mobile Broadband Connectivity
Dragontech Systems leads the development of wireless technology agnostic, operator and region independent router technologies for high availability mobile installations. The TAQTRON and RIDE-IT series routers support "0-delay" VPN handover mode as well as intelligent dynamic load balancing between multiple broadband cellular EDGE/3G/LTE, CDMA2000 (450MHz) or Satellite uplinks that are bonded into one single connection. Routers monitor the parameters of up to four uplinks using an intelligent algorithm that shares the packet data over all available uplinks. This operation is transparent and session persistence is maintained.
The Dragontech routing technology ensures secure uninterrupted “always-on” connectivity with optimal combined throughput of all available links in any wireless coverage scenario.
Multi-Path Router Cornerstone Technologies:
- Linux software centric approach - platform agnostic
- From two up to N wireless uplinks supported
- Dynamic and intelligent load balancing
- VPN tunnels on all available uplinks
- Server Geo-Location database used for network traffic behaviour pattern analysis
- Zero-delay failover with no VPN handover delays
- Zero dataloss (if any link is up)
- Bundling of all uplinks to one virtual robust connection
- Handover with single VPN with failover suppoted
- Advanced remote management
Multi-uplink VPN Handover
In multi-uplink VPN handover mode the Dragontech routers maintain a live VPN connection on all available uplinks. The router link qualification algorithm selects the best uplink that us used based on a set of criteria and past geo-location data to support decision making. One of the VPN tunnels is used for communication at a time. When link qualification changes or one uplink fails the packet stream is directed to another VPN tunnel. This handover has no delay, and no dataloss and it is totally transparent to applications and sessions are maintained. Routers can be controlled from remote and the router can be accessed through any available connection. Routers continuously send information to the management server database. This data is used for troubleshooting, reporting, analysis and creating the geo-location based database on network availability and characteristics.
Multi-uplink Intelligent Load Balancing
Load balancing mode intelligently uses parallel VPN connections for distributing packet data across all uplinks. In load balancing mode all uplinks are bonded to form one robust high bandwidth virtual connection. The powerful load balancer algorithm uses all current and past information available to optimally use the uplinks. In any link fails the traffic is directed to other available uplinks with no data loss or interruption. Load balancing is applied on up- and downlink. This mode is ideal for live video transfer or passenger WiFi where many subscribers are using the bandwidth.
When no connection is not an option
In wireless networks, interference and signal strength typically are location dependent. Throughput and latency changes dynamically and in a mobile environment staying on-line with constant service availability is a challenge.
Simple load balancers mechanically distribute sessions or packet data to available uplinks. This does not fully take into account the changing of the conditions on wireless uplinks in a moving vehicle.
Multi-SIM routers take a long time to reconnect and face IP address management issues, Handover and Mobile-IP Single VPN routers take time to qualify uplinks and rebuild connections. Data may not be lost, but communication is interrupted. If networks change often a lot of time is spent negotiating a new connection.
Dragontech has addressed this problem with the approach of intelligent inductive reasoning, to create an uncompromising algorithm and routing topology that is powerful enough to deliver on all the fundamental requirements. Data is collected not only for logging and reporting purposes, but to feed the algorithm with Geo-location based information to make future predictions. In short, this model seeks to find the best explanation for the data gathered and to predict how the uplinks should be optimally managed based upon phenomena observed in the past.
The practical implementation is “Network Traffic Behaviour Pattern Analysis”, where the router gathers Geo-location and time based information on each uplink and its VPN as well as the information on the mobile network operator and shares with the Gateway Server. A fast and efficient shared database in the Dragontech router and the Home Gateway Server is used to control and predict optimal load balancing and preferred network in the field.
This database can create a location and time based model on the wireless environment. This ability to use pre-stored data to intelligently control the router operation is unique and delivers the best performance in a mobile scenario.
Dragontech takes the lead in the development of technologies for high service availability wireless mobile routers.