B3G: Beyond Third Generation in mobile communication system

B3G: Beyond Third Generation in mobile communication system, as opposed to 3G mobile communications, B3G has a higher transmission efficiency and all types of business. B3G technology research from the late 20th century when the 3G technology to complete standardization began. In 2006, ITU-R officially named B3G technology IMT-Advanced technology (3G technology, called IMT-2000). According to the original work plan, IMT-Advanced standardization has been "imminent." ITU-R will be in February 2008 issued a circular to all countries, countries and standards organizations to call for IMT-Advanced technology proposal. IMT-Advanced technologies need to achieve higher data rates and greater system capacity, the target peak rate: slow moving, hotspot coverage scenarios 1Gbit / s or more; fast-moving, wide-area coverage scenario 100Mbit / s or more. Internationally for IMT-Advanced research has made a series of important progress. Japan has passed NTTDoCoMo 4 × 4 and 12 × 12 multi-antenna MIMO technology at 100MHz bandwidth, respectively, verified the 1Gbit / s (outdoor experiment) and 5Gbit / s peak transfer rate, in the hardware implementation is a world leading position. EU 6th Framework project since the start of 2004 WINNER attracted major European telecommunications equipment manufacturers. The first phase (Phase Ⅰ) was the end of 2005, on a variety of key technologies for B3G extensive research, the formation of a systematic study conclusions; the end of 2007 to complete the second phase (Phase Ⅱ) will complete the system design and performance assessment, formation of a sound technical solutions; the third stage in 2008 (Phase Ⅲ) will demonstrate the system's development and experimentation. Meanwhile, the EU strongly supported the World Wireless Research Forum (WWRF) has become a major international technology exchange platform for B3G one. In addition, Japan and South Korea were also set up a forum and NGMC mITF forum to promote their B3G research. Overall framework As human society, rapid development and continuous improvement, there is a growing yearning for Li Yong portable cell phone anytime, anywhere communication links with each other, so B3G communication system is not confined to the use of mobile cellular networks, mobile communications areas of study should be expanded. Indeed, the mobile cellular network has to communicate to people the freedom to play an unprecedented role in contact, they continue to improve and develop is fully consistent with the needs of society. However, in addition to mobile cellular networks, there are wireless local area network WLAN, wireless metropolitan area network WMAN, WPAN WPAN, satellite communication networks, digital broadcasting network, stratospheric communication network, such as traditional wired network. These have their own characteristics and the best access network application environment, B3G communications systems should not be replaced by a completely different network than the network, but access should be through a variety of integration technologies and standards to provide users with transparent, efficient service [6 ]. Expected future B3G mobile communication systems will integrate cellular, RLAN (Radio Local Area Network), digital broadcasting, satellite and other access systems, and to ask for the seamless interaction between these systems, based on end-users performance, position and type of enjoyment and more kind of transport mechanism to provide a variety of information. Different wireless access systems will be interconnected by a flexible core network, horizontal / vertical switching services, mobility, security and QoS aspects of consultation to provide seamless services to the core by the core network or access network servers. To achieve this seamless service, to develop highly adaptive, symmetric / asymmetric packet data transmission solutions.

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B3G:Beyond Third Generation in mobile communication system

B3G:Beyond Third Generation in mobile communication system,relative to the 3G mobile communication, B3G has higher transmission efficiency and more complete business types.

B3G technology research from the 20th century when performing standardized 3G technology began. In 2006, ITU - R formally named IMT - B3G technology called 3G technology on technology (IMT - 2000). According to the plan, the original IMT - the standardization has "on Sunday." ITU - R will in February 2008 to all countries, to send circulars and the standardization organization IMT - on the technical proposal solicitation. IMT - on the technology needed to achieve higher data rate and larger system capacity, target peak rate for: low-speed moving, hotspot coverage 1Gbit/s above scenarios; High-speed mobile, the wide-area 100Mbit/s covered more than scenarios.

International on the research on the IMT - have made a series of important progress. Japan NTTDoCoMo company already through 4 x 4 and 12 x 12 multi-antenna MIMO technology in verified under 100MHz bandwidth respectively 1Gbit/s (outdoor tests) and 5Gbit/s peak in hardware realization transmission rate, is a world leading position. The eu's second 6 framework research project WINNER since 2004, attracting Europe since the start of the main communication equipment business. The first stage (Phase Ⅰ) already in the end of 2005, various B3G key technologies used in the broad survey, formed systematic research conclusion; Will be completed by the end of 2007 the second stage (Phase Ⅱ) will complete the system design and performance evaluation, forming perfect technical solution; The third Phase began in 2008 will be conducted Ⅲ) Phase (demo system development and experiment. Meanwhile, the European Union support world BBS (the WWRF) wireless research B3G has become an international one of the main platform technical exchanges. In addition, Japan and South Korea also are respectively established NGMC BBS, mITF BBS and promote their B3G research.

Overall structure

With the rapid development of human society and the continuous progress, people more and more yearning use carry mobile anytime of each communication, so don't leave B3G communication system used in mobile cellular network, mobile communication research range should be expanded. Admittedly, mobile cellular network now free to people for the communication play the role of unprecedented, they continue to improve and develop is completely conform to social needs. But, except for mobile cellular nets, besides the wireless LAN WLAN, wireless intracity networks WMAN, wireless a domain nets WPAN, satellite communication network, digital radio network, stratosphere communications network, traditional cable connection nets, etc. These access network have distinguishing feature each, and best applicable environment, so B3G communication system should not be replaced by entirely different networks, and should have network through multiple access technology and standard fusion for the user to provide transparent and efficient services.

B3G expected future of mobile communication system will integrate the honeycomb, RLAN (Area), have a Local digital Radio, satellite and other access system, at the same time requirement for seamless interaction between these systems, and users can according to terminal performance, position and type of transmission mechanism provides enjoy variety of information. Different wireless access system will through the flexible core network interconnection, horizontal/vertical switch in mobility, service, safety and QoS aspects, after consultation service provide seamless by core network or access core network server provided. To realize such a seamless service, to develop highly adaptive, symmetry/unsymmetrical packet data transmission solutions.