Joint VNF Placement And CPU Allocation In 5G

Satyam Agarwal IIT Guwahati, India
Francesco Malandrino Politecnico di Torino, Italy
Carlafabiana Chiasserini Politecnico di Torino, Italy
Swades De Indian Institute of Technology Delhi, India


Thanks to network slicing, 5G networks will support a variety of services in a flexible and swift manner. In this context, we seek to make high-quality, joint optimal decisions concerning the placement of VNFs across the physical hosts for realizing the services, and the allocation of CPU resources in VNFs sharing a host. To this end, we present a queuing-based system model, accounting for all the entities involved in 5G networks. Then, we propose a fast and efficient solution strategy yielding near-optimal decisions. We evaluate our approach in multiple scenarios that well represent real-world services, and find it to consistently outperform state-of-the-art alternatives and closely match the optimum.

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