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| Evolved EDGE ： ウィキペディア英語版 |
Evolved EDGE
Evolved EDGE is a bolt-on extension to the GSM mobile telephony standard, which extends the previous EDGE upgrade to achieve theoretical speeds of up to 1 Mbit/s with relatively low cost and ease. Also called EDGE Evolution, it promises real world downlink speeds of up to 600kbit/s with seamless transitions to and from 3G coverage, which should serve to extend the life of GSM networks in areas where the additional cost to go full 3G isn't necessarily justified.〔http://www.engadgetmobile.com/2009/09/14/nokia-siemens-fires-off-first-edge-evolution-downlink-dual-carri/〕 As of 2009, there are no commercial networks which support Evolved EDGE standard (3GPP Rel-7).
There is a considerable research and development happening throughout the world〔 for this new technology. As of 2008, there are many major wireless network & infrastructure providers who have invested in this technology. However successful trial has been made by Nokia Siemens and "one of China's leading operators" demonstrated in a live environment.〔
== Motivation ==
The main intention of increasing the existing EDGE throughput is that many operators would like to upgrade their existing infrastructure rather than invest on new network infrastructure. Mobile operators have invested billions in GSM networks, many of which are already capable of supporting EDGE data speeds up to 236.8 kbit/s. With a software upgrade and a new device compliant with Evolved EDGE (like an Evolved EDGE smart phone) for the user, these data rates can be boosted to speeds approaching 1 Mbit/s (i.e. 98.6 kbit/s per timeslot for 32QAM). Many service providers may not invest on a completely new technology like 3G networks.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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