ACM Transactions on Computer Systems (TOCS)
ORBIT Radio Grid Tested for Evaluation of Next-Generation Wireless Network Protocols
TRIDENTCOM '05 Proceedings of the First International Conference on Testbeds and Research Infrastructures for the DEvelopment of NeTworks and COMmunities
Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks & communities
Large-scale virtualization in the Emulab network testbed
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
NVS: a virtualization substrate for WiMAX networks
Proceedings of the sixteenth annual international conference on Mobile computing and networking
VPMN: virtual private mobile network towards mobility-as-a-service
MCS '11 Proceedings of the second international workshop on Mobile cloud computing and services
A virtualization architecture for mobile WiMAX networks
ACM SIGMOBILE Mobile Computing and Communications Review
NVS: a substrate for virtualizing wireless resources in cellular networks
IEEE/ACM Transactions on Networking (TON)
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This paper presents the architecture and performance evaluation of a virtualized wide-area "4G" cellular wireless network. Specifically, it addresses the challenges of virtualization of resources in a cellular base station to enable shared use by multiple independent slice users (experimenters or mobile virtual network operators), each with possibly distinct flow types and network layer protocols. The proposed virtual basestation architecture is based on an external substrate which uses a layer-2 switched datapath, and an arbitrated control path to the WiMAX basestation. The framework implements virtualization of base station's radio resources to achieve isolation between multiple virtual networks. An algorithm for weighted fair sharing among multiple slices based on an airtime fairness metric has been implemented for the first release. Preliminary experimental results from the virtual basestation prototype are given, demonstrating mobile network performance, isolation across slices with different flow types, and custom flow scheduling capabilities.