4G Network Architectures. Final report to survey System issues Selected concepts for 4G Self-organizing ,Ad-hoc network for 4G 林家彬 . “ 4G ” Design Challenges.
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Final report to survey
Although 3G is an important first step, several basic issues still need to be addressed for next generation wireless systems:
Fast/reliable broadband radios (PHY/MAC) with QoS
~100 Kbps 1-10 Mbps with adaptivity, link reliability & Qos
Scalable system capacity for mass-market services
high service penetration implies ~Gbps/Sq-Km
Integration of multiple radio technologies into single IP network
unified mobility architecture
New networking modes, e.g. multicast, multihop & peer-to-peer
...lower-cost infrastructure, networks that grow organically
A few techniques for achieving the 4G design goals discussed earlier: