Optimized Incremental Network Planning
Joachim Charzinski, Uwe Walter
Abstract
Network providers aim to offer a high level of
service quality in order to satify their
customers' requirements. One of the key factors
to fulfil this requirement is a careful network
design providing enough available transmission
capacity. As data traffic tends to increase
continuously, network operators regularly face
the necessity to upgrade their network to match
the growing demands. In this paper, we evaluate
and compare different strategies for deciding how
many and which links to upgrade. Calculations for
example networks demonstrate the efficiency of
the strategies in utilizing the newly added
capacity. Since optimization of the network's
routing further helps to increase resilience and
allows a more efficient use of the available
resources, we include this approach in our
evaluations. Additionally, the possibility to
include anticipated failure scenarios during
routing optimization is also compared to the
other strategies. It is shown that the
straightforward approach to upgrade the most
utilized link is not necessarily the best choice.
Instead, an optimized upgrade planning including
routing optimzation can deliver a higher
resilience at lower cost.
Keywords
Internet; Traffic Management; Routing Optimization;
Metric Optimization; Resilience; Upgrade Planning