HSCSD or High Speed – Circuit Switched Data is a high speed data transfer technology for GSM-based networks. It improves upon the Circuit Switched Data technology in order to enhance data throughput capacity while using currently existing network infrastructure.
HSCSD manages to improve the rate of data transmission up to four times that of normal GSM networks that use plain CSD. This improved technology accomplishes this feat using two distinct methods. Firstly, it uses a more flexible error correction methodology. In normal CSD, the data transfer rate is 9.6 kbit/s. A considerable portion of this bandwidth is used for transmitting error correction codes, irrespective of the quality of transmission. HSCSD on the other hand uses error correction codes only when the transmission quality is poor. Under good transmission conditions, the transmission rate can reach 14.4 kbit/s since less error correction codes are required to be sent. This technique alone improves the throughput by 50%.
Secondly, HSCSD can use multiple time slots to increase data throughput. While CSD uses a single time slot per user, HSCSD can use up to 4 time slots simultaneously. It is...
To view and download this full PLR article, you must be logged in. Registration is completely free. Once you create your account, you will be able to browse, search & downlod from our PLR articles database of over "1,57,897+" on 1,000's of niches and 200+ categories without paying a penny. Click here to signup...
