This article reviews the key differences between traditional IP routing and the emerging MPLS approach, and identifies where MPLS adds value to IP networking. In various corners of the industry MPLS has been held up as the solution to IP QoS, gigabit forwarding, network scaling, and traffic engineering. Each of these expectations is critically considered in the light of developments in conventi...

The conventional wisdom in the planning community is that planners based on integer programming (IP) techniques cannot compete with satisfiability and constraint satisfaction based planners. In this paper we challenge this perception of IP techniques by presenting novel formulations that outperform the most efficient SAT-based planner that currently exists. We will present a series of IP formul...

In this paper, we propose a C51-Duel-IP (C51 Dueling DQN with Independent Policy) dynamic destination path-planning algorithm to solve the problem of autonomous navigation and avoidance multiple Unmanned Aerial Vehicles (UAVs) in communication denial environment. Our proposed expresses Q function output by network as distribution, which improves fitting ability value. We also extend single-step...

The telecommunications industry is going through a technological revolution, involving a transition from multiple voice and data networks to integrated service networks using packet switching technologies. The paper describes a new framework (the IPCP Framework) for capacity planning and costing in an IP network environment. Capacity Planning is carried out in four stages, the first of which is...

This dissertation investigates various areas of IP network planning for realtime services. These areas are traffic characterization, capacity assignment, robust network dimensioning, and network planning tool development. In regards to traffic characterization, various clients of realtime services are tested in different situations and their traffic is characterized using known models. Motivate...

The first aim of the present study was to investigate the feasibility of using fewer beam angles to improve delivery efficiency for the treatment of oropharyngeal cancer (OPC) with inverse-planned intensity-modulated radiation therapy (IP-IMRT). A secondary aim was to evaluate whether the simplified IP-IMRT plans could reduce the indirect radiation dose. The treatment plans for 5 consecutive OP...

The operational model for large Internet service providers is moving to a multi-layer architecture consisting of IP/MPLS coupled with OTN/DWDM. While there has been significant work on multi-layer networks, the explicit modeling in IP/MPLS over OTN/DWDM has not been addressed before. In this paper, we present a detailed network optimization model for the operational planning of such an environm...

Traffic, usage, and performance measurements are crucial to the design, operation and control of Internet Protocol (IP) networks. This paper describes a prototype infrastructure for the measurement, storage and correlation of network data of different types and origins from AT&T’s commercial IP network. We focus first on some novel aspects of the measurement infrastructure, then describe analys...

The aim of this study was to compare the dosimetric characteristics of left-sided whole breast irradiation among 3-dimensional conformal radiotherapy (3D-CRT), 4-field inverse-planned intensity-modulated radiotherapy (IP-IMRT) and hybrid IMRT technique (combining 3D-CRT beams and IP-IMRT beams) with respect to target coverage and irradiation of organs at risk. The 3 different planning technique...