Quality of service interworking over heterogeneous networks in 5G

Abstract

In 5G, heterogeneous broadband networks will emerge to a common set of objectives to offer the end users higher capacity, robustness, security, QoS, and more in a unified and converged manner. In order to provide end-to-end QoS support to application services over the heterogeneous networks, a common QoS framework is proposed in this paper. The framework consists of a two-level scheduling scheme: a Class-Based Weighted Fair Queuing (CBWFQ) discipline and a Rate-Controlled Priority Queuing (RCPQ) discipline. Mapping of integrated QoS classes among heterogeneous networks was defined using a mapping table. Simulation results show seamless QoS deliverables over a vertical hand-off between different types of technologies such as LTE, WiMAX, WiFi, and a wireline IP-based DiffServ-based network. The results also show that the proposed solution improves performance for both Real Time (RT) and Non-Real Time (NRT) applications.