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IP transport layer in wireless networks |
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Management challenges |
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IP Management of the IP transport layer |
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Examples |
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QoS is based on IETF Differentiated Services
model |
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Application mix |
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user traffic (voice, streaming media,
interactive data, bulk data) |
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signaling (time critical, non real-time) |
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O&M (time critical, non real-time) |
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All of these are mapped to services of the
transport layer. |
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Management tasks |
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monitoring service quality |
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optimal provisioning of network resources |
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consistent deployment of DiffServ configurations |
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Large number of routers |
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5 - 10 000 routers in a RAN |
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2-year rollout plan means appr. 10 routers to
deploy each day! |
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Dynamics of configuration changes |
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numerous new types of wireless applications
expected |
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continuously evolving knowledge about traffic
characteristics |
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frequent planning, re-optimization is necessary
to maintain resource efficiency |
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Reliable services |
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high standards of telecom: strict reliability
requirements |
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services are offered when only a fraction of the
network is deployed |
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expansions and reconfigurations must be done on
an already operational network |
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Support complex management operations … |
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in a very large and dynamically changing network
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while the reliability of the services is
maintained. |
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Separation of tasks |
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sophisticated modeling tool |
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planning, optimization, and analysis functions |
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complex tasks in a low risk environment
(simulator) |
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algorithms help handling large networks |
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online management application |
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configuration, monitoring, trouble shooting |
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consistency checks guard network operations |
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import complex configuration sets generated by
algorithms from modeling tool |
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Tools integrated through network database |
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shared information and network data model |
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based on standards (e.g. DEN/CIM specs of DMTF) |
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Routing analysis and evaluation |
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simulate routing behavior |
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consistency and connectivity analysis |
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MPLS traffic engineering |
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simulate CSPF |
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local and global LSP optimization |
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Performance evaluation |
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service characteristics for each DiffServ class |
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loss and delay calculation |
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Network planning and optimization |
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topology planning |
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link dimensioning |
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routing/addressing plan |
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Analyze and design large and complex networks |
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Providing quality of service in the large,
dynamically changing IP transport
network is a key issue. |
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A
modeling, simulation and planning tool is required to manage and optimize
the performance. |
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Smooth workflow between other planning and
simulation tools and management applications is crucial. |
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