NDLI: UMTS: High Speed Packet Access (HSPA) Technology

Content Provider	IEEE Xplore Digital Library
Author	Shah, S.I.
Copyright Year	2008
Description	Author affiliation: Iqra Univ., Islamabad (Shah, S.I.)
Abstract	As of July 31, 2007, there are over 522 million 3G subscribers in the world (source: 3gtoday.com). Out of these 130 million are on UMTS, a growth of almost 100% in one year. Data services are expected to grow significantly within the next few years. Current 2.5 G and 3 G operators are already reporting that a significant proportion of usage is now due to data, implying an increasing demand for high-data-rate, content-rich multimedia services. Although current Release 99 WCDMA systems offer a maximum practical data rate of 384 kbps, the 3rd Generation Partnership Project (3GPP) have included in Release 5 of the specifications a new high-speed, low-delay feature referred to as High Speed Downlink Packet Access (HSDPA). HSDPA also known as Release 5, provides significant enhancements to the Downlink compared to WCDMA Release 99 in terms of peak data rate, cell throughput, and round trip delay. This is achieved through the implementation of a fast channel control and allocation mechanism that employs such features as Adaptive Modulation and Coding and fast Hybrid Automatic Repeat Request (HARQ). Shorter Physical Layer frames are also employed High Speed Uplink Packet Access (HSUPA) (UMTS Release 6) complements the High Speed Downlink Packet Access (HSDPA) technology. As the name suggests the improvement is in the uplink where the theoretical uplink data rate can be up to 5.76 Mbps. Together, HSDPA and HSUPA offer reduced latency and much higher data rates on the downlink and uplink, theoretically as high as 14.
Starting Page	2
Ending Page	2
File Size	151296
Page Count	1
File Format	PDF
ISBN	9781424421510
DOI	10.1109/INCC.2008.4562669
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-01
Publisher Place	Pakistan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Programmable control 3G mobile communication Automatic control Downlink Throughput Multiaccess communication Adaptive control Automatic repeat request Delay Modulation coding
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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UMTS: High Speed Packet Access (HSPA) Technology

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