Admission Control and Resource Allocation with Improved Effective Bandwidth/Buffer Calculation Method

摘要

Connection Admission Control(CAC) and network resource allocation are important problems in the design and control of high-speed communication networks. The problems become very complex when combined with Quality of Service(QoS) guarantee for traffic with different characteristics. CAC and network resource allocation are real-time traffic control procedures. Processing load should be minimized to reduce delay. At the same time, network resources should be utilized efficiently to accommodate more users. However, reducing processing load and obtaining high network resource efficiency has been considered to be contradictory matter. In addition, a research on CAC and resource allocation scheme, which considers multiple QoS criteria - loss and delay - simultaneously has not been adequately done. We propose an improved effective bandwidth/buffer calculation method based on a new channel/buffer separation analysis scheme. We show that our method based on effective bandwidth and effective buffer can achieve high network resource efficiency with reduced processing load. Moreover, we show that our scheme allows for simultaneous consideration of multiple QoS criteria, loss and delay.