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J-Series Data Radio – User Manual
Part C – Network Types
Point-to-Multipoint via KwikStream™ Repeater
A Point to Multipoint via KwikStream™ Repeater network is a variation of the Point To Multipoint network. It is normally chosen when the site where
the SCADA (i.e.: data) entry point does not have adequate RF coverage of other Remote sites in the network. The network diagram is shown below.
In this network topology, the Access Point radio is configured as a Repeater. The repeater should be located at a site with adequate RF coverage
to each of the remotes. The Repeater still behaves as an Access Point to the Remotes as in a Point to Multipoint network, but the Repeater is
configured to repeat data messages between remotes in the network. It therefore allows peer to peer communication to occur between remotes.
Because the Access Point radio now needs to “Repeat” data, data latency for messages from the Host Application to/from the Remotes will be
longer. However, the Repeater implements a smart repeating technology called KwikStream™ which allows the Repeater to perform multiple
transactions within any one hop, ensuring available bandwidth remains high and data latency is kept low. KwikStream™ technology is achieved
using a virtual “loop-back” plug ensuring data is repeated quickly and no user port with physical loop back plug is required. A key advantage is that
a local RTU/PLC device can be located at the Repeater site and peer to peer communication is supported for this unit.
For more information on KwikStream™ technology please refer to the appropriate section in Part D - Features of this user manual.
All other aspects of the Point to Multipoint network apply to this network topology.
