A Precedence-Enabled Per Hop Behavior: Impact on TCP and UDP Flows

Currently, preferential packet handling in transport networks is based solely upon application-level Quality of Service (QoS) requirements. No preferential packet handling is based upon the importance of the information being carried by the network. In future transport networks, packet handling should provide preferential transport to important, high precedence traffic, specifically during conditions of resource scarcity, e.g., network overload conditions, while simultaneously satisfying packet scheduling required to meet application QoS needs. The authors propose and analyze an approach to supporting both Precedence and Preemption (P&P) and QoS handling in common transport infrastructures.