文件名称：TECHNOLOGY OF HIGH
文件大小：230KB
文件格式：PDF
更新时间：2013-09-22 05:48:46
HSPA
By now UMTS is a well-established technology with manifold networks running globally and competitive terminals on the market. A significant shift from traditional circuit-switched, often constant bit-rate services to IP packet switched services is expected in the near future. UMTS Release 99, based on dedicated resource allocation per user, is not well suited for IP packet data traffic. Therefore High Speed Packet Downlink Access (HSDPA) and Enhanced Dedicated Channel (E-DCH) have been introduced as new features of UMTS for Downlink and Uplink in UMTS Release 5 and Release 6, respectively. This technology called High Speed Packet Access (HSPA) claims significant enhancements in end-to-end service provisioning for IP based services. This introduces these future technology enhancements and assesses the potential gains for future applications and in term user perception.