3G technology, Wimax technology, WiFi technology for broadband wireless data, the Troika, as the three 3G standards: TD-CDMA WCDMA CDMA 3G is just pulling the plane of the three carriage horses, as long as three horses in the in a desperate rush before the 3G will not affect the forward carriage.
(1) troika race has begun
3G WCDMA and CDMA2000, especially telecom operators to be respected in the world of universal applications, covering the widest area and roaming capabilities, the data rate is heading higher, no doubt is the success of broadband wireless data, in this troika of respite first;
WiFi terminals and equipment layout as wide, the use of flexible, open frequency, in the home, office, entertainment has been widely used, but very prominent advantages and disadvantages: advantages of high bandwidth, the disadvantage for the low mobility and low coverage; temporarily second in the race;
Wimax is It was generally optimistic about the 4G technology, test network, trial commercial network in the world like wildfire will burn up, but the equipment has yet to be mature; in the last three carriages of respite, but the OFDM MIMO and many other new technologies , potentially very strong.
(2) are to enhance and improve their
OFDM and multiple antenna techniques are being used three, to play their respective advantages at the same time, both to improve itself, to make up their own shortcomings; 802.11n to 3G and WiFi Wimax rate increased to the point can not match, just launched 802.11r seems to maintain a high-speed WiFi at the same time, improve the defects in the switch, making the AP to switch between the time a smaller, more suitable for the different AP roaming between applications; Wimax in the coverage distance, non-line communications has been greatly improved, in roaming and other mobile switching functions are gradually perfected; 3G LTE in terms of access speed, video support and development efforts to provide greater .
(3) Future: carrot cabbage all have love
3G enables operators to love and hate, love it can improve income, is a competitive weapon, hate the high operating costs (hot spots take up more carrier frequency resources), is a threat to profitability;
Wimax hope, it also brings uncertainty. Wimax can make faster and more people have more expectations, but how to effectively operate in parallel in the three can go to the first pole position?
WiFi has a higher speed, broader application, to make up for shortcomings in the ability to find more after the operation mode determines whether it can win the next game. < br> In fact, we are fully aware of some short feet, inch a director, in today's enthusiasm for the domestic WiFi can see the clues. WiFi can be used as supplementary 3G, WiFi has a duck to water application scenarios, or even separate operations.
Wimax we give high hopes, as an alternative to 3G, but the result of the development has not always true, when Wimax developed to a certain extent, the new replacement may occur, if in the future 3G , Wimax, WiFi with the gradual convergence of technology, who can say who is in clear replacement?
For operators, there may be discriminatory phenomenon, and for users, are concerned about may be just a few practical parameters: access speed, coverage, switch time, operational capacity and so on. I have only mobile access to data within the family, WiFi is the best choice of course, non-stop around the world walk the trapeze, and now mobile none other than non-3G data selection. As the Wimax 4G wider application prospects.
IP technology and its integrated storage and full of spirit of learning, and win everyone's support, made by many people from the. Now look, WiFi technology also been developing their own, 802.11a/b/g/n/r not stop; 3G's three Malaysians are starting a run forward, Wimax is thriving. up and down the vibrant technology has the ability to take-all such as IP, Ethernet technology. This proposition is the same on the establishment of broadband wireless data.
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