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  • Communication Industry Development Background
    Jun 02, 2018

    The rapid development of communication technology has indeed brought us a lot of enjoyment. With the development of data communication and multimedia business requirements, adapt to the mobile data, mobile computing and mobile multimedia operation to the fourth generation mobile communication began to rise, users also have reason to look forward to the fourth generation mobile communication technology will bring us a better future. When it comes to fourth-generation mobile technology, it is not clear to many people. In this article, we will introduce this technology in five aspects.

    As you know, all technologies cannot be developed overnight. From GSM and GPRS to the 4th generation, they need to evolve continuously, and these technologies can exist simultaneously. We all know that the first mobile phones were used analog cellular technology, this technology can only provide regional voice business, and poor results, secrecy performance is not good, the user's answer is very limited. Along with the rapid development of mobile phone users to the rapid growth of the traditional communication model already can't satisfy people's needs for communication, in this case there is a GSM communication technology, the technology using narrowband TDMA, allowed in a radio frequency (i.e., 'honeycomb') eight group calls at the same time. It is a digital mobile phone system with a frequency range from 900 to 1800MHz, according to European standards, and a frequency range of 1800MHz is adopted in the United States. GSM was introduced in 1991. By the end of 1997, it had been operating in more than 100 countries, becoming the DE facto standard in Europe and Asia. GSM digital network also has strong confidentiality and anti-interference, clear sound quality, stable communication, large capacity, high frequency resource utilization, open interface and strong functions. But its data transmission rate is only 9.6kbit/s, as fast as it was five or six years ago, when the Internet was almost text-only. The current popular digital mobile phone is the second generation (2G), which generally adopts GSM or CDMA technology. In addition to providing so-called "global voice" voice services, second-generation phones can already offer low-speed data services, such as sending and receiving text messages. Although in theory, 2 g mobile phone users around the world can be mobile, but since there is no unified international standard, all kinds of mobile communication system are incompatible with each other, bring inconvenience mobile phone users.

    In view of the defects of GSM communication, a new communication technology GPRS was introduced in 2000, which is a transition technology based on GSM. GPRS launch marked the people in the history of the development of GSM took a significance of the most significant step, GPRS in the mobile user and provides a connection between data network, provide mobile users high-speed wireless IP and x. 25 grouped data access.

    After that, communications operators will launch EDGE technology, the communication technology is a cross between the existing of the second generation mobile network and the transition between the third generation mobile network technology, therefore also has called it "second generation" technology, it effectively improve the efficiency of GPRS channel coding of high-speed mobile data standards, which allows up to 384 KBPS data transfer rate, can fully meet the future demand for the bandwidth of the wireless multimedia applications. EDGE provides a from GPRS to transitional scheme of the third generation mobile communication, so that the existing network operators can maximize the use of the existing wireless network equipment, in the third generation mobile network before commercialization for users provide personal multimedia communications business in advance.

    WCDMA, the symbol technology of 3G communication, will also become the mainstream of communication technology in the future. The technology provides users with a maximum data transmission rate of 2Mbit/s, in which case any media used in computers can be easily transmitted over wireless networks. WCDMA can not only process sound, image data, but also connect to the Internet quickly by using broadband effectively. In addition, WCDMA combined with mpeg-4 technology can also process real dynamic images. The bottleneck of communication between people, now by the network transmission rate into a variety of new applications to provide: how to make the wireless network to better serve for the people rather than bring harassment, how to let everyone can quickly from the sea of information to get the information you need, how can convenient carrying and use a variety of terminal equipment, all kinds of terminal equipment between how to better work together automatically, and so on. On the basis of the above communication technology, wireless communication technology will eventually move into the era of 4G communication technology.

    From the perspective of the development of wireless communication system, the task of the first generation of mobile communication system has been reached, but the present stage is the age of the second generation mobile communication system, the next 10 years will be a 3 g mobile communication system is xing, perhaps in a decade later will be the fourth generation mobile communication. But it is easy to find each of the different mobile communication system will have a repetitive point in time, about every ten years is a technology update, but with advances in communications technology, it will be faster, shift time will be shorter. For mobile communication service providers, system equipment suppliers or other related industries, it is necessary to keep an eye on the changes of mobile communication technology to meet the market demand.