Hscsd

High-Speed Circuit-Switched Data (HSCSD), is an enhancement to Circuit Switched Data, the original data transmission mechanism of the GSM mobile phone system. As with CSD, channel allocation is done in circuit switched mode. The difference comes from the ability to use different coding methods and/or multiple time slots to increase data throughput.

One innovation in HSCSD is to allow different error correction methods to be used for data transfer. il sistema per connessioni wireless veloci HSCSD (High Speed Circuit Switched Data), un ambiente allontana alcuni grandi produttori dall'HSCSD non è soltanto l'emergere del GPRS. The original error correction used in GSM was designed to work at the limits of coverage and in the worst case that GSM will handle. This means that a large part of the GSM transmission capacity is taken up with error correction codes. HSCSD provides different levels of possible error correction which can be used according to the quality of the radio link. This means that in the best conditions 14. Il Nokia 7650 supporta HSCSD e GPRS? Si, il Nokia 7650 supporta GPRS e HSCSD. 4 kbit/s can be put through a single time slot that under CSD would only carry 9. 6 kbit/s, for a 50% improvement in throughput.

The other innovation in HSCSD is the ability to use multiple time slots at the same time. Using the maximum of four (4) time slots, this can provide an increase in maximum transfer rate of up to 57. L' High-Speed Circuit-Switched Data (HSCSD), è uno sviluppo del Circuit Switched Data, il meccanismo originale di trasporto dei dati del sistema di telefoni cellulari GSM. 6 kbit/s (4 times 14.