Deployment for Balanced and Efficient 5G Slice Based on VIKOR

The Fifth-Generation (5G) mobile network is expected to meet the diverse requirements of verticals by providing a promising platform for innovative applications. Network slicing is recognized as a key technology to realize the provision of services on demand for 5G broadcasting by slicing an infrastructure physical network into a dedicated sub-physical logical network. However, as the dimension of physical network resources and the number of users increase, how to efficiently and balanced deploy the network slices is the main issue in a multi-domain network since the network slices share limited resources. In this paper, a heuristic and dynamic algorithm is proposed based on the VIKOR method which shortens the time of NS deployment by orchestrating nodes and links simultaneously. In the nodes provisioning stage, according to the topology information based on Complex Network theory, the importance of nodes is sorted, which increases the acceptance ratio. In the path-selecting stage, a strategy is put forward that decreases resource usage and balances the physical resource distribution. Extensive simulations have been conducted which show that our algorithm performs better in terms of resource balancing and achieves a higher acceptance ratio both in a static and dynamic environment.