DVB-S2 Multistream (MIS means Multi Input Stream satellites)

Introduction to DVB-S2 Multistream (MIS means Multi Input Stream satellites)

The migration from DVB-S to DVB-S2 introduced significant enhancements not only on the signal side, but also related to content. One improvement that the DVB-S2 standard offers is multistream technology, which allows operators to transmit several transport streams or IP streams via one satellite carrier in a transparent way. As soon as more than one stream is transmitted or received, a multistream device replaces several single stream devices, thereby reducing equipment costs.

How it works:

Multistream technology includes a mechanism in the underlying baseband frame structure that merges multiple transport and generic data streams. The modulator uses only the packets of one stream to fill a baseband frame and starts a new one for the second stream. The frames are then aligned sequentially for transmission. Using an 8-bit identifier in the baseband frame header, also known as an input stream identifier (ISI), the baseband frames are designated to a specific stream. Up to 256 transport and/or IP streams can be merged.

Benefits of multistream technology:

With the introduction of DVB-S2 multistream technology, users can now combine multiple transport streams or digital data streams into a single satellite carrier, or a mix of both data types in the instance of DSNG. Furthermore, multistream offers several important user benefits. First, each stream is independently configurable with complete user control for choosing any number of streams. Second, multistream allows more features to be contained into a single device. Even externally fed baseband frames with proprietary content can be made part of the system, while still having traffic and signal control as part of the same device. Finally, by using a single satellite carrier, operators can realize significant savings in bandwidth costs.

Source: https://work-microwave.com/introduction-dvb-s2-multistream/

Although PLS and Multistream are two different techniques, you often see this combined. But they do not have any relation with each other. PLS was originally intended to reduce the cross-channel interference. But in real-live it is used as a simple encryption. Multistream is a part of DVB-S2. PLS is also, but then only with a reduced number of values can be used. Regularly the values are zero. With DVB-S2x you may choose the numbers.

 DIBSYS Q1X gateway able to receive multistream/T2-MI

•  Reverse T2-MI to TS
•  Low cost/High Density chassis (HDc), it allows De-encapsulation of up to 24xT2-MI streams
• Versatile inputs/outputs (satellite,DVB-S2 ASI, IP),
• Single and Multiple PLP management
•  Support Multiple PLP de-encapsulation
• Works both Coax Cable & IPTV networks
• Operation via LCD Screen and Web Management
• Flexible selection of different input modules