QoS guarantee method for real time service with packet priority in Home Gateway

In this paper, we propose a Quality of Service (QoS) method for a real time service by using priority-based packet classification method in Home Gateway (HG). A real time service is sensitive to QoS factors such as delay and jitter. On the contrary, A non-real time service is tolerant to above mentioned QoS factors. To improve QoS for the real time service, UDP is granted a high priority compared with TCP in Data Buffer Part (DBP) of HG. We analyze the expected waiting time of priority-based packet by using queueing analysis. The result shows that a significant QoS benefit due to the reduced waiting time for the real time service.