SB-SAT Protocol Stack

SB-SAT technology enables relay of data from LEO to GEO satellites for cost-efficient and real-time connectivity. Reduce time, cost and risk involved in development of an SB-SAT terminal with this proven SB-SAT protocol stack.

Low risk alternative

The GateHouse SB-SAT Protocol Stack for Low-Earth Orbit (LEO) Satellites is a low risk alternative to a key component in development of an SB-SAT terminal, as it is based on the proven BGAN Protocol Stack which has more than 120.000 terminal licenses under its belt.

Global and continuous connectivity

The SB-SAT Protocol Stack is a mobile device protocol stack for use on LEO Satellites, and in combination with Inmarsat’s I4 and future I6 (L-Band satellites) network of GEO-stationary satellites, it enables global and continuous connectivity to LEO satellites.

Reduce development time and cost

With the SB-SAT Protocol Stack, you efficiently reduce the uncertainty related to development of a new terminal, hereby saving you both time and expenses.

Technical description

The GateHouse SB-SAT protocol stack is an adaption of the market-proven BGAN Protocol Stack which has been deployed in more than 120,000 end-user terminals for land, maritime and aeronautical uses.

SB-SAT Protocol Stack is complemented with a test suite for efficient development and qualification.

SB-SAT is based on the aeronautical terminal classes and provides additional features for use in low-earth orbit:

IP connectivity up to 492 Kbit/s
Antenna pointing
Beam handover and satellite switching
Predictive handover at spot-beam boundaries
Accurate return link burst timing based on orbit extrapolation
Predictive Doppler compensation

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Save time and reduce costs

The GateHouse SB-SAT protocol stack is software for use in SB-SAT terminals. By using a proven protocol stack, significant savings can be realized in terms of both time and money. Furthermore, it reduces risk in the development process of an SB-SAT terminal.

Full simulations

The protocol stack is fully conformance tested applying Inmarsat test requirements and is validated by full-orbit simulation using the GateHouse BGAN Network Emulator. The capabilities of the emulator allow set-up of realistic orbits with full simulation of beam-to-beam handovers and satellite switches.

The maturity of the protocol stack combined with the availability of efficient test tools ensures optimal foundation for an efficient and smooth integration process.

Test suite included