الفهرس 
Limitations Of TMD Microwave RadioOnly 14 pages are availabe for public view
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Abstract
With the introduction of new broadband networks and services, mobile networks are now evolving to new packet based architectures capable of supporting enhanced broadband connections. Simple text messaging and slow e-mail downloads are being replaced by high-speed connections that support true mobile office applications, real time video, streaming music and other rich multimedia applications. 4G mobile networks will approach the broadband speeds and user experience now provided by DSL and cable modem services. The additional speeds and capacity provided by next generation networks put additional strain on mobile backhaul segments and the carriers providing these backhaul services. Not only on the capacity requirements, but there is also a fundamental shift from TDM architecture to a new full IP based transport architecture.
Microwave point to point links have been the dominant transmission media used to interconnect the different parts of cellular mobile’ networks since their early deployment in the 90’s. By deploying packet microwave in the access and backhaul networks, service providers can quickly reach more consumer and enterprise customers while delivering multiple services over a single Ethernet connection.
A smooth transition scenario to all IP backhaul segment is needed to maintain existing infrastructure for mobile operators, without deploying a hybrid system, while TDM and data services coexist. New features (multiservice aggregation, radio bandwidth optimization, service-aware traffic management, service-driven adaptive modulation) are key factors to successfully migrate native TDM existing networks to new IP based networks.