The Importance Of Resource Allocation And Scalability

1145 Words5 Pages
based WCNs can easily abstract the network services as VNFs and deploy in the VMs. In the meanwhile, it provides numbers of SB APIs to accommodate devices using specific technologies, including WiFi, LTE, and WiMAX (see Figure 15). Fig. 15. The NFV/SDN Architecture in WCNs. In the case of enhancing resource allocation and scalability, the programmability of SDN allows fast service deployment and alleviates the conflicts between different network functions. Figure 15 illustrates that SDN solutions can either be applied to the level of AN (e.g., SoftRAN [Gudipati et al. 2013], SoftMobile [Chen et al. 2014]) or the level of CN (e.g., SoftCell [Li et al. 2012]). Additionally, it holds to work in both the AN and CN (e.g., cellular SDN [Li et al. 2012]). For example, SoftRAN virtualizes a set of base stations to be a single virtual one by leveraging the AN control plane, which improves the handover, resource assignment and transmits power allocation. SoftMobile tackles the problems of state information distribution, cell configuration, and real-time operations between cells. Architecture [Yang et al. 2015] is proposed to meet the 5G service trends and network architecture requirements by consolidating NFV, SDN and cloud computing. There are control cloud, access cloud, and forwarding cloud in this architecture to improve the performance in mobile broadband scenario, ultra-reliable and low latency communication scenario as well as massive machinetype- communications scenario. In
Open Document