CSD uses a single radio time slot to deliver 9. Prior to CSD, data transmission over mobile phone systems was done by using a modem, either built into the phone or attached to it. Such systems were limited by the quality of the audio signal to 2. At the same time, the speech-oriented audio compression used in GSM actually meant that data rates using a traditional modem connected to the phone would have been even lower than with older analog systems. A single dedicated radio time slot is allocated between the phone and the base station.
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Email Address. Sign In. The study is conducted using a multidimensional Markov chain. An HSCSD connection can be established if the number of available channels is between a minimum acceptable capacity, b, and a maximum required capacity, B. This leads to an effective service time for HSCSD calls, proportional to the bandwidth negotiated with the base station. Finite buffers are used for new and handoff requests to increase the total carried traffic, while maintaining the quality-of-service QoS requirements.
The key parameters which control the new data service performance are identified and adequate formulas are obtained. Especially, delays experienced by HSCSD calls are evaluated and compared to an optimal transmission operating at the maximum capacity. Published in: ICC ' Conference Record. Article :. DOI: Need Help?
High-Speed Circuit-Switched Data (HSCSD)
HSCSD is comparable to the speed of many computer modem s that communicate with today's fixed telephone networks. You forgot to provide an Email Address. This email address is already registered. Please login. You have exceeded the maximum character limit. Please provide a Corporate E-mail Address. Please check the box if you want to proceed.
Performance Analysis of High Speed Circuit Switched Data (HSCSD) over GSM
Multiaccess, Mobility and Teletraffic pp Cite as. An HSCSD connection can be established if the number of available channels is between a minimum acceptable capacity, b, and a maximum required capacity, B. This leads to an effective service time for HSCSD calls, proportional to the bandwidth negotiated with the base station. New call attempts which find channels occupied are also inserted in a HOL queue with finite capacity where priority is given to voice calls over HSCSD calls. Queueing offers a means of increasing total carried traffic, while improving the perceived service quality. Guard channels can also be set aside for handovers to respect Quality-of-Service QoS requirements. A performance analysis, when mean service times for voice and HSCSD calls are different, is reported.
HSCSD (High-Speed Circuit Switched Data) - definition
Specification : General Versions Responsibility Related. Reference: Action date Action Author. No records to display. Behrouz Aghili InterDigital Communications.
HSCSD (High-Speed Circuit-Switched Data)
Four times faster than GSM, with a transfer rate of up to This speed makes it comparable to many fixed-line telecommunications networks and will allow users to access the Internet and other datacom services via a GSM network. HSCSD operates across a GSM network, and therefore no extra hardware is required by a mobile communications operator to offer the service, just a network software upgrade. In a GSM network single slots are allocated to each user, which has a standard data transfer rate of 9. In HSCSD, users are allocated multiple slots so that the transmission speed can be drastically increased, with some service providers offering rates of up to This enables internet access at the same speed of many dial-up modem services across fixed line networks.