4G device features
4G devices have the following advantages:
1. Communication speed is fast
The second generation of digital mobile communication system transmission rate is only 9.6Kbps, up to 32Kbps, such as PHS; third generation mobile communication system data (the first generation of mobile communication system data transmission rate comparison, the first generation of analog only provide voice services; The transmission rate can reach 2Mbps; and the fourth generation mobile communication system transmission rate can reach 20Mbps, or even up to up to 100Mbps, this speed will be equivalent to the latest transmission speed in 2009 about 10,000 times the third generation mobile phone transmission speed Of the 50 times.
2. Wide spectrum of network
In order to make 4G communication to 100Mbps transmission, communication operators must be in the 3G communications network on the basis of a large number of transformation and research, so that the 4G network in the communication bandwidth than the 3G network cellular system bandwidth much higher. According to AT & T executives who study 4G communications, it is estimated that each 4G channel will occupy 100MHz spectrum, equivalent to 20 times the W-CDMA 3G network.
3. Flexible communication
The future of 4G communication so that people can not only anytime, anywhere communication, but also two-way download to transfer information, pictures, images, of course, and can never meet the stranger online line game. There may be a distress that has been permanently locked up by the online positioning system, but it is almost negligible compared to the convenience and security of the map it provides.
4. Intelligent high performance
The fourth generation of mobile communication is more intelligent, not only in the 4G communications terminal equipment design and operation with intelligent, such as the menu and scroll operation will be greatly reduced the degree of dependence, more important 4G can achieve many unimaginable Features.
5. Good compatibility
To make 4G communication as soon as possible to accept, not only consider its powerful, but also should take into account the basis of existing communications in order to allow more existing communication users in the case of minimal investment can easily transition To 4G communication. Therefore, from this point of view, the future of the fourth generation of mobile communication systems should have the global roaming, open interface, with a variety of network interconnection, terminal diversification and smooth transition from the second generation and so on.