Multi-layer Resource Optimization and QoS Guarantee for Inter-working Wireless Networks

Abstract

Next generation wireless networks are evolving from the interworking of existing wireless networks. The interworking of these networks conveniently brings about ubiquitous broadband internet access required by network users. However, the major concerns in interworking wireless networks include how to ensure effective resource dimensioning and quality of service (QoS) provisioning while optimizing the overall network's resources. Although traffic engineering (TE) frameworks are used to overcome such network issues, a few of these frameworks are suitable for wireless networks. More so, there is virtually no TE framework for interworking wireless networks. In addition most TE frameworks focus only on network layer metrics, which makes them inapplicable to wireless networks. Due to the stochastic nature of wireless networks, TE frameworks which capture metrics that affects QoS from other layers of the networkare needed. Hence, this paper proposes a multi-layer TE framework for QoS provisioning, resource dimensioning and optimization in interworking wireless networks. The proposed framework is based on stochastic network calculus.