The Overview of the 4th Generation Mobile Communication System

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In order to satisfy the expectation of the users to have more advanced wireless access even in the mobile environments, research and development efforts for realizing the Fourth- Generation (4G) mobile communication system has been discussed. This paper outlines the requirements for the system, technical challenges to be solved, and finally describes the activities related to the standardization of the 4G mobile communication system.

The users of the Third-Generation (3G) International Mobile Telecommunications-2000 (IMT-2000) [1] mobile communication services, which was launched in October 2001, has already reached about 34 million subscribers in Japan. The system provides a variety of advanced multimedia services such as video communications and high speed internet access. It is expected that this will lead to the mobile communication more important to our daily lives and will expand the role as a lifestyle basis in the next ten years. It is also expected that such an era requires a more advanced wireless communications system, such as the Fourth-Generation (4G) mobile communication system, which far surpasses the capability of the existing IMT-2000 as shown in Figure 1. The development process of the new mobile systems consists of developing the requirements, providing solutions satisfies the requirements, showing evidences for each technology to satisfy the requirements, as well as building international consensus through the standardization activities. In this article, we describe a basic approach to the technical issues and system configuration involved in achieving the capability and performance required of the 4G system. We also describe the trends in standardization concerning mobile communication systems. Download free The Overview of the 4th Generation Mobile Communication System.pdf here

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