QoS　sensitive　applications　have　become　increasingly　popular.　This　paper　presents　end-to-end　QoS　control　techniques　to　improve　the　network　usage　factor　and　the　destination　buffer　utilization　of　the　application.　The　data　scheduling　process　of　the　QoS　sensitive　applications　has　been　described.　An　analytical　modeling　of　QoS　performance　has　been　put　forward.　End-to-end　QoS　evaluation　metrics　have　been　deduced,　and　a　dynamic　threshold-based　packet　scheduling　scheme　has　been　proposed.　Simulation　experiment　has　been　performed　and　the　results　show　that　the　proposed　algorithm　improves　the　end-to-end　QoS　performance　of　the　QoS　sensitive　applications.　©　2011　IEEE.