Envisioning Spectrum Management in Virtualised C-RAN
Contribution for newspaper or weekly magazine
Christiansen, Henrik Lehrmann
- Publisher: IEEE
Long Term Evolution | radio access networks | resource allocation | telecommunication network management | telecommunication scheduling | telecommunication traffic | virtualisation | spectrum management | virtualised C-RAN | cloud radio access network | mobile data traffic | network virtualisation | long term evolution | hypervisor specific assignment | resource allocation mechanism | round robin C-RAN scheduling technique | Resource management | Mathematical model | Mobile communication | Algorithm design and analysis | Computational modeling | Virtual machine monitors | Radio access systems | Mobile radio systems | Network management
Cloud Radio Access Network (C-RAN) has attracted a worldwide attention in both academia and industry. This network architecture re-forming has been considered as a potential solution to meet the increasing capacity demands for future mobile data traffic. In addition, Network Virtualisation is a promising technique for efficient resource utilisation. This paper proposes a customisable resource virtualisation algorithm for multi user data scheduling in a Long Term Evolution (LTE) C- RAN deployment. The algorithm is based on the hypervisor specific assignment of air resources allocation between the virtual operators (VOs) dynamically, based on either joint scheduling or per cell schemes. The objective is to improve the resource allocation mechanism based on traffic conditions and a database of pre-defined services priorities. Two distinctive scenarios are considered and evaluated against standard Round Robin (RR) C-RAN scheduling technique. Simulation results show improvements in the overall traffic throughput and reduction in end-to-end delay for delay sensitive applications. In addition, an assessment of fairness guarantee is considered across all users.