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Principles |
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The Principles of HSCSD:
HSCSD or High Speed Circuit Switched Data was the first upgrade to be standardized by ETSI to bring high speed data to GSM. The standardization process started as early as 1994 and therefore, HSCSD was the first high speed data extension to be ready for implementation in 1999.
The basic idea behind HSCSD is to bundle more than one timeslot on the air-interface for a single connection. Applying this simple idea, HSCSD is able to reach throughput rates of up to 57.6 kbit/s. However, the real-life implementations of HSCSD barely exceed 38.4 kbit/s.
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