UP Paper 1718 Print Page US-T-T DOWN

Precedence and Quality of Service (QoS) Handling in IP Packet Networks

Goldsmith,Deborah MITRE Corporation

Wang,Sherry JHU/APL

Park,Kun MITRE Corporation

Liebowitz,Burt MITRE Corporation

Doshi,Bharat University of Massachusetts

In military networks, Precedence and Preemption (P&P) and Quality of Service (QoS) are both required.QoS re-fers to meeting the performance requirements of an appli-cation (packet delay, packet loss, packetdelay variation, service availability, connection set up time, connection acceptance ratio, etc.) while P&Prefers to meeting the QoS requirements of the highest importance applications under congestion conditions,in which there are not enough network resources to satisfy the QoS requirements of all applications. Inparticular, Preemption refers to taking away network resources from a lower Precedence application inorder to give the resources to a higher Precedence application. Per Hob Behaviors (PHBs) are used bynetwork nodes to implement QoS. A Service Level Agreement (SLA) is a QoS contract that is used toassure that the QoS requirements of admitted applications are met by the network transport for definedtraffic profiles. SLAs and P&P are often perceived to have an adversarial relationship. This paper proposesa way to resolve this conflict by making QoS PHBs Precedence-Aware, while remaining agnostic of thespecific PHB mechanism.

Dr. Deborah Goldsmith is a Principal Networking and Distributed Systems Engineer in the MaritimeInformation Technology and Engineering Department at MITRE Corporation. Prior to joining MITRE inFebruary 1992, Dr. Goldsmith was an Instructor of Mathematics at the University of Chicago and anAssistant Professor of Mathematics at the University of Michigan, Ann Arbor. She has worked in industry onsecure software/operating systems (O/Ss) and cellular data packet data (CDPD) standards. She has aPh.D. in Mathematics from Princeton University and a Ph.D. in Computer Science from the University ofCalifornia, San Diego. Currently she is a Deputy Project Leader of a consolidated project supporting theNavy PEO for C4I & Space. Within the project, Dr. Goldsmith leads the IP Networking and Quality ofService (QOS) Working Group for the Navy and participates in the MITRE End-End Engineering (ESE)tasking from the Office of the Secretary of Defense (OSD/NII) as one of the Navy networkingrepresentatives. She has been one of the principal investigators on the Adaptive Bandwidth ManagementSystem internal research project at MITRE. In addition to numerous mathematics publications, Dr.Goldsmith has presented at MILCOM in 1999 and again in 2001 in the area of communications andnetworking.

Page 1 of 1Abstract

7/24/2015http://www.milcom.org/2006/abstracts/1718.html