HSCSD or Higher Pace – Circuit Switched Information can be a high rate information transfer engineering for GSM-based networks. It improves upon the Circuit Switched Info technology so that you can improve data throughput capacity while utilizing presently present network infrastructure.

HSCSD manages to improve the rate of info transmission up to four times that of regular GSM networks that use plain CSD. This improved engineering accomplishes this feat using two distinct methods. Firstly, it employs a a lot more flexible error correction methodology. In regular CSD, the information transfer rate is 9.6 kbit/s. A considerable portion of this bandwidth is employed for transmitting error correction codes, irrespective of the high quality of transmission. HSCSD on the other hand employs error correction codes only when the transmission top quality is poor. Under great transmission conditions, the transmission rate can reach 14.4 kbit/s since less error correction codes are required to be sent. This approach alone improves the throughput by 50%.

Secondly, HSCSD can use multiple time slots to increase info throughput. While CSD employs just one time slot per user, HSCSD can use up to 4 time slots simultaneously. It’s analogous towards the difference in the amount of traffic that can pass by means of just one lane and a 4-lane highway. Making use of this technique, HSCSD can provide information exchange rates as much as four times that of normal CSD networks. When the transmission high quality is poor as well as the network is operating at 9.6 kbit/s, HSCSD can offer speeds up to 38.four kbit/s. But when the transmission top quality is good and also the network is working at 14.4 kbit/s, HSCSD can provide speeds approximately 57.6 kbit/s.

However, what speed the consumer finally gets is determined by the infrastructure employed through the network operators. Whilst some operators offer two time slots per user, others provide 3 slots. Even at current rates of information exchange, HSCSD is a lot quicker than comparable technologies like GPRS.

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