emad_az90
خريج هندسه أسوان دفعة 2009
عدد المساهمات : 114
تاريخ التسجيل : 24/03/2008
العمر : 37
الموقع : الزعفرانة-السويس
رقم العضوية : 927
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 |  موضوع: EDGE, HSPA enhancements, 3GPP LTE, the capabilities of these technologies  الأربعاء 24 فبراير - 10:23 | |
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Universal Mobile Telecommunications System (UMTS) with High Speed Packet Access (HSPA) technology and its evolution to beyond Third Generation (3G) is becoming the primary global mobile-broadband solution. Building on the phenomenal success of Global System for Mobile Communications (GSM), the GSM/UMTS ecosystem is becoming the most successful communications technology</SPAN> family ever.
UMTS/HSPA, in particular, has many key technical and business advantages over other mobile wireless technologies. Whereas other wireless technologies show great potential on paper, UMTS has global commercial deployments that are providing customers mobile-broadband service today.
Operators worldwide are now deploying High Speed Downlink Packet Access (HSDPA), one of the most powerful cellular-data technologies ever developed. HSDPA, already widely available, follows the successful deployment of UMTS networks around the world and, for many of these networks, is a relatively straightforward upgrade. Any operator deploying UMTS today is doing so with HSDPA. The UMTS-to-HSPDA upgrade is similar to Enhanced Data Rates for GSM Evolution (EDGE), which has already proven to be a remarkably effective upgrade to GSM networks, and HSPDA is now supported by an overwhelming number of operators and vendors worldwide.
High Speed Uplink Packet Access (HSUPA) is poised to follow HSDPA, with the combination of the two technologies called simply HSPA. HSPA is strongly positioned to be the dominant mobile-data technology for the rest of the decade. To leverage operator investments in HSPA, standards bodies are examining a series of enhancements to create “HSPA Evolution,” also referred to as “HSPA+.” HSPA Evolution represents a logical development of the Wideband Code Division Multiple Access (WCDMA) approach, and it is the steppingstone to an entirely new Third Generation Partnership Project (3GPP) radio platform called 3GPP Long Term Evolution(LTE). LTE, which uses Orthogonal Frequency Division Multiple Access (OFDMA), should be ready for deployment in the 2009 timeframe. Simultaneously, standards bodies—recognizing the significant worldwide investments in GSM networks— have defined enhancements that will significantly increase EDGE data capabilities through an effort called Evolved EDGE.
Combined with these improvements in radio-access technology, 3GPP has also spearheaded the development of major core-network architecture enhancements such as the IP Multimedia Subsystem( IMS) and the Evolved Packet System (EPS) as well as developments in Fixed Mobile Convergence( FMC). These developments will facilitate new types of services, the integration of legacy and new networks, the convergence between fixed and wireless systems, and the transition from circuit-switched approaches for voice traffic to a fully packet-switched model.
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el_hekmdar2009
مهندس نشيط
عدد المساهمات : 225
تاريخ التسجيل : 14/11/2009
العمر : 41
الموقع : أرض مصر الحبيبه
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| | موضوع: رد: EDGE, HSPA enhancements, 3GPP LTE, the capabilities of these technologies الأربعاء 24 فبراير - 12:44 | |
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