Research on 4G Wireless has been going on for the last few years. These networks promise a much higher overall data throughput and much more diverse services than what current second and third (2G-3G) networks can do . All-IP wireless has emerged as the most favored platform for 4G wireless networks. The blueprint of future wireless networking architecture has to take into account the fact that foremost load in 4G wireless networks will be high-speed, content-rich, burst-type traffic, which has previously posed a great challenge to all existing wireless networking Technologies used in existing networks. Many research activities are researching the design of suitable architectures for 4G wireless networks, which are proficient, adaptive, flexible and scalable, that work harmonically with different network technologies (including legacy 2G, 2.5G and 3G networks) and allow heterogeneous networking applications. Research is on to look into how to realize smooth migration and seamless interoperability between the legacy networks and future 4G wireless networks.

4G Architecture.

It has been recommended that the architecture of 4G wireless networks should efficiently address all the constraints and tribulations existing in the current wireless networking technologies. The research on the next generation wireless networking involves many cutting edge research topics, such as cross-layer joint optimization design, quality of service assurance, dynamic network recourse allocation, ad hoc/mesh network routing algorithms, heterogeneous networking, cooperative Network detection, vertical/horizontal network services integration,. state-of-the-art research is being carried on subjects like: 4G network planning * Network resource allocation and assignment * Fault tolerance and service availability * 4G Killer Applications * 4G networking standardization.

The 4G Wireless Design Forum

The 4G Design Forum has tried to implement various features deemed necessary for 4G Systems as raised by various potential users during the course of deliberations. A consensus has been reached by 4G forum to address

(1)Education, Art and Science-•Many consumers appreciated the convenience of being able to attain a wide range of information devoid of any constraints of location. Numerous had an impression that knowledge and information equivalent to those provided by school classes can be attained through mobile communications.

(2)Entertainment •Large number of consumers wanted to be able to watch movies anywhere using their spare time. Its “omnipresent nature” (able to enjoy service anytime, anywhere) and “private nature” (realizing a wide range of entertainment services on individual terminals) were well accepted.