Modified Packet Scheduling Algorithm using Real-time Service

In this paper analyzes various scheduling algorithms applied to multi-media streaming system for providing real-time service in Internet and proposed a scheduling algorithm that can meet the QoS requirements of delay-sensitive traffic and loss-sensitive traffic for specific services. First, the concept of QoS drafted from the recommendation of ITU-T is defined and the requirements for packet multiplexer in Internet are examined. Then the scheduling algorithm to satisfy various QoS based on functional architecture of packet multiplexer for streaming system bound to real-time service and QoS levels of input source traffic is designed. Finally, the performance of the algorithm is evaluated thru experiments that measure the packet loss and average delay time of the proposed algorithm. Key-Words: Packet Scheduling Algorithm, QoS, Multiplexer, Real-time service, Multi-media streaming