Development of Telecommunication operaters is shifting from the environment with strictly dedicated architecture in virtual environments with a common platform for all services and technologies. Existing dedicated architecture in today's fast growing and traffic unpredictable environment is increasingly inflexible and slow expandable.
The transition to a virtual environment adds capabilities of cloud computing to existing telecommunication networks. Portfolio of ofered services of the Telecommunication operaters in a virtual envirnoment, now also comprises telecommunication services in the cloud based on the virtual network functions or VNF and software-defined network or SDN, supported by back-end systems such as OSS / BSS in the IT cloud. Operators can also decide to introduce or rent commercial cloud where users are offered all the services, to facilitate and optimize every day work in a business environment.
No transition to a new environment is quite straight forward and obvious, but the mix of current capacity to deliver services, planning support future services that are based on new and rapidly evolving technologies and specific market features. The introduction of advanced solutions pass through a sieve adequate security policies across the user and the service provider with the support of the selection of appropriate solutions for moving to a virtual environment.
The thesis is a special focus on virtualization of network equipment in terms of the replacement of existing network equipment with modular software programs on a powerful commercial hardware with the goal of providing high responsiveness, independence between hardware / software and financial optimality. Implementation of separation software / hardware management and network services based on the separation of the control plane and user plan is based on the introduction of NFV and SDN features. The combination of these features will contribute to greater simplicity and flexibility of the network architecture, mitigating network load and combined delivery of services.
The process of transition to a new environment is carried out with the migration process. Migration will initially comprises a detailed analysis of the services network element that we plan to migrate to a suitable platform that can support current and the development and integration of new services. A concrete example of the migration described in this thesis, is the migration of customer databases - vUSPP HLR / HSS / MNP / AAA on a dedicated virtual platform. ZTE USPP platform provider, in this case most suit all architectural criteria for high reliability. Once platform is chosen, it's followed by high and low level design, which provide on the one hand, direct integration into the overall network architecture operator (connectivity, correlation, analysis of existing data bases), on the other hand, precise determination of system parameters and optional applications. After the design, migration phase is followed by direct migration to the new platform, which includes the transfer of the database, change routing, Roll Back mechanism and finally control and surveillance on the basis of monitoring key KPIs.
|
