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Fig. 15.4 Principle network architecture and elements
Mobile Core Network
• Network Management Server (NMS)
• Data Storage Systems (DSS)
• Network Gateway (NGW).
Figure 15.4 shows the principle network architecture model and the main
equipment elements which contribute to energy and material consumption.
The conditions defined in the application scenario (business case) such as the
frequency and the intended data traffic per user are used to estimate the cell radius in
order to calculate the required number of antenna sites for providing the necessary
bandwidth in a given area. The number of compute sites supplying the antenna sites
can be derived from there.
There are several architecture options determining the type and location of a
network device. Especially in the context of the 5G implementation, there are the
option of 5G Non-Stand-Alone (NSA) that share the core network functionality
with existing LTE networks or the option of a pure 5G Stand-Alone (SA) network.
From an environmental point of view, it is important to analyze and compare several
network architectures. Particularly the shifting of computation functionality within
the network has potentially strong implications for the energy and material demand.
For instance in centralized or so called cloud radio access networks (C-RAN), the
pooling of baseband units (BBUs) in large and highly efficient data centers generally
offers good energy saving potential.
After defining the network architecture and thus the basic network elements and
the interfaces, the individual configuration of these components takes place in the
next step.
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