4G Lte ready to start in 2010, faster then Adsl2
Everything is ready for LTE (Long term evolution) the fourth-generation mobile networks (4G). Many companies announced agreements to 66 networks (22 in 2010) and first Lte products.
The LTE standard is ready for data, while for voice call is in draft. At the same companies announce other news: TD-LTE and LTE Advanced, to hit record Gbps by 2014-2015. The 4G will be the first universal technology for the mobile network. It will also be the first fully IP-based: Lte ends with the era of circuit-switched telephony, designed for mobile calls.
Information, including voice, begin to travel in the form of data packets. A revolution, very expensive: Telia Sonera, at the moment the only Lte operator, have launched it in Stockholm and Oslo, respectively with Ericsson and Huawei. Telia Sonera estimate a cost of 70 million euros to cover another 28 cities in 2010 in Sweden and Norway. Companies must rebuild from scratch the mobile network, with its various systems. Given the costs, it is unthinkable that operators pass to Lte suddenly: they will do so gradually, maintaining at the same time GSM and UMTS / HSPA.
UMTS and / or GSM netowork will remain for some years the only standard supported by most of the cell phones. Ericsson also has multi-standard equipment (it is the first networking vendor in the world, Huawei is the second). Qualcomm has introduced dual-mode chip.
It is urgent to increase the capacity of cells, because the mobile traffic will increase more than sevenfold in the world between 2010 and 2014, according to GSA. The Lte offers greater speed (100 Mbps), lower latency but also lower operating costs: 4G network will work with IP protocol, it needs fewer devices, which are also more advanced and therefore consume less (10 – 20%) also they have a better intelligent traffic management system. A network test made by Ericsson in Stockholm, presented in early May 2010, shows that the performance of Lte are greater than ADSL 2 Plus (20 Mbps), Huawei has shown instead, in Shanghai in late May, some Lte 4g applications: 3D games, high definition IPTV (1080p). From 2011-2012 there will be the first networks TD-LTE (Time Division) while the current is Fd (frequency division, more adapted to the voice). The TD-LTE, shown for its first time at 2010 Shanghai China Mobile Expo, can add up the frequencies in the downlink and uplink , to double the bandwidth.
From late 2009, the industry works at Advanced Lte at 300/100 Mbps to 1.2 Gbps in terms of reduced mobility (as shown by Huawei in March, in the laboratory). Benefits are possible thanks to new functions, such as carriers, and spectrum aggregation (aggregates resources different wireless), the Comp (Coordinated multipoint transmission the user connects to multiple base stations at once) and better Mime download (multiple smart antennas).
From 2015 we will see the first phones cloud, that will do everything via the Internet, will be the first to launch them Huawei and ZTE, while today only Samsung (SCH-r900) and HTC Evo 4G has announced a LTE phone.
4G Lte networks start in Usa around the end of 2010 with Centurytel, Metro PCS, Verizon Wireless, Cox Comms and in Canada with Telus and Bell Canada.
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