Meanwhile, network virtualization is ramping up as operators seek to build more flexible and cost-effective use of their resources. C-RAN also lays the framework for real-time radio resource coordination and very low latency in 5G. Centralized Radio Access Network approaches are emerging that simplify antenna sites because no baseband unit cabinet is required use less energy and enable lower operating costs because pools of BBUs are located in a single location for service and maintenance. The pivot toward LTE Advanced Pro and 5G is happening to both physical and logical network architectures. But that can only happen if network architectures can support the increased speeds and capacity needs of LTE Release 13 and beyond. LTE Advanced Pro deployments are just getting started and are expected to be able to achieve gigabit speeds – so operators are likely to be able to address some 5G use cases with their LTE networks. However, LTE still has a long life left in it. Although 5G deployments are still some ways off, networks are already slowly transforming to meet the requirements for ultra-high speed, ultra-low latency and ultra-high capacity that are expected to be a hallmark of 5G systems.
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