Dynamic Resource Provisioning and Resource Customization for Mixed Traffics in Virtualized Radio Access Network

Kun Xiong,Sebakara Samuel Rene Adolphe,Guisong Liu,Guolin Sun,Gordon Owusu Boateng

doi:10.1109/access.2019.2935606

Kun Xiong, Sebakara Samuel Rene Adolphe + Show 3 more

Open Access

https://doi.org/10.1109/access.2019.2935606

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Abstract

The fifth generation (5G) wireless technology is envisioned to support different applications or services on a common substrate infrastructure. To achieve this objective, network virtualization is needed to partition the physical network into various network slices with each slice providing a unique service in the network. In networks with mixed traffics, service operators are required to provide services in isolation since each service has its own defined objective. In such mixed traffics, achieving an efficient and effective resource allocation is a challenging issue. In this paper, we propose a dynamic resource provisioning scheme involving mixed traffics with multiple base stations in a virtualized radio access network. Since users in each slice have varying requirements on satisfaction regarding the delay and data rate, we propose a customized shape-based heuristic algorithm for users to improve resource utilization and QoS fulfilment. The comprehensive system-level simulation is conducted based on OFDMA air-interface design. Simulation results show that the proposed algorithm outperforms baseline algorithms in terms of QoS satisfaction and resource utilization.

Highlights

The future 5G cellular technologies are expected to enable a major digital transformation that will provide businesses, people and industries with unprecedented capabilities to share information or resources
PERFORMANCE ANALYSIS OVER BACKHAUL CAPACITY we evaluate the performance of the proposed dynamic resource provisioning scheme with user association in terms of system satisfaction ratio in both light-load and heavy-load scenarios with network virtualization substrate (NVS) and NetShare as benchmarks
In Figure 11. the results shows that Through a long-term observation, due to the packet delay on every base station for every slice, the dissimilarity for slices in the results indicates that the averaged queue lengths for our proposed scheme on UEb slice and Hdtv slice is extremely dynamic than NVS and NetShare

Summary

INTRODUCTION

The future 5G cellular technologies are expected to enable a major digital transformation that will provide businesses, people and industries with unprecedented capabilities to share information or resources. We propose a hierarchy system framework of inter-slice resource provisioning and customized user resource allocation in virtualized radio access network for mixed traffics. We come up with a heuristic algorithm to achieve resource provisioning of a slice considering different QoS features of mixed traffics, to solve the problem of dynamically changing channel status considering the slices’ preferences and weights at different BSs. In multiple BS scenario, radio resource provisioning with flexible re-association is considered. The shapes are defined with regard to contiguous time-frequency RBs based on time delay and transmit rate desires This low-complexity algorithm can be effortlessly applied in any OFDMA-assisted radio access network (RAN).

RELATED WORKS

VIRTUALIZATION MODEL

Step2: aggregate resources of a slice at a BS

SHAPE BASED RESOURCE ALLOCATION AND ASSOCATION CONTROL

Findings

CONCLUSION