What is a TD mobile phone?
We have seen TD mobile phones on many websites. What exactly is a TD mobile phone? In response to this question, the following will give you an explanation. One explanation.
TD mobile phone is a type of 3G mobile phone. It is made according to China's 3G TD-SCDMA communication standard. It supports high-speed mobile Internet access, mobile TV, video calls, video conferencing and other 3G functions. . What is a TD mobile phone? TD mobile phone is one of the three 3G standards approved by the ITU. It started later than the other two major 3G standards (CDMA2000) or (WCDMA).
TD’s full name is TD-SCDMA (Time Division-Synchronous Code Division Multiple Access). It is the first complete mobile communication technology standard in China’s telecommunications industry in a century. It is also closely related to WCDMA in Europe, CDMA2000 in the United States and later Joining WiMAX as one of the four major 3G standards in the world.
Mobile phones that support the TD-SCDMA standard network are called TD mobile phones (also known as: G3 mobile phones). TD-SCDMA This standard is a 3G standard independently developed by mainland China. On June 29, 1999, China The Telecommunications Science and Technology Research Institute of the former Ministry of Posts and Telecommunications (Datang Telecom) proposed to ITU. The standard combines smart wireless, synchronizedToday's leading international technologies such as CDMA and software-defined radio are integrated into it, and it has unique advantages in terms of spectrum utilization, flexibility in business support, frequency flexibility and cost.
What is a TD mobile phone? What are the characteristics of a TD mobile phone? TD mobile phones are similar to GSM terminals in terms of power consumption and stability; they implement HSDPA; they have video phone functions; they have MBMS functions, that is, they can Watch mobile TV; it has TD/GSM dual-mode dual standby function and can realize automatic switching of dual-mode single standby (including GPRS/EDGE).
TD mobile phones are in TDD mode and have their own characteristics in the scope of application: First, the mobile speed of the terminal is limited by the existing DSP computing speed and can only reach 240km/h; Second, spectrum utilization and system capacity can be optimal when the coverage radius of the base station is within 15km. In areas where user capacity is not very large, the maximum coverage of the base station can reach 30-40km. Therefore, TD mobile phones are suitable for use in cities and suburbs, and these two shortcomings do not affect actual use in cities and suburbs. Because in cities and suburbs, the vehicle speed is generally less than 200km/h, and the population density in cities and suburbs is high. Due to capacity reasons, the radius of the community is generally within 15km. When providing full coverage in rural areas and large areas, it is also appropriate to use WCDMA FDD. Therefore, TDD and FDD modes complement each other.
That’s the answer to the question about what a TD mobile phone is. TD mobile phone is a 3G standard proposed by my country’s Datang Telecom Company. This standard proposes to directly communicate without the intermediate link of the 2.5 generation. The transition to 3G is very suitable for the upgrade of GSM systems to 3G.