Integrated QoS Signaling with Adaptive Resource Allocation Strategy for Multi-service Networks

Abstract

Triple play (voice, video and high speed data) over IP is likely to be a popular service in the Next Generation Network (NGN). The major challenges to this kind of service are due to the different qualities of service (QoS) required by different types of applications and the corresponding resource allocation works. In this paper, we analyze the functional architecture of session and resource management with SIP, RSVP, COPS and Megaco/H.248, and propose an integrated QoS signaling architecture to guarantee QoS. In addition, a variation based on adaptive resource allocation strategy, called Variance-based Adaptive Resource Regulation (VARR), is proposed to improve the performance. To provide multi-service with the required QoS, the total bandwidth is divided into three parts for different types of traffic. These parts are regulated according to blocking rate, dropping rate, and variation of variable bandwidth. The effect of mobility on the system performance was evaluated and compared by simulation. The results reveal that the proposed VARR does improve the performance in supporting multi-services heterogeneous networks.