With the increasingly popular virtualization of both computing and networking resources in a distributed system (called a physical substrate), multiple virtual infrastructures (VIs) can share the phys...
Wireless mobile networks have become crucial in providing untethered communication services to mobile users. In this paper, we propose an optimization model for the design of survivable wireless acces...
We propose an efficient network design algorithm that realizes shared protection. The algorithm iteratively improves the degree of wavelength resource usage and fiber utilization. To achieve this, we ...
We propose a shared protected network design algorithm that iteratively improves the degree to which backup paths are shared and hence fiber utilization. We introduce novel measures to evaluate the de...
We present a multi-constrained routing algorithm, called delay-constrained pool sharing (DPS), in a survivable mesh network. The goal of this algorithm is to find a pair of link- disjoint primary and ...
We investigate the survivable traffic-grooming problem for optical mesh networks employing wavelength-division multiplexing (WDM). In the dynamic provisioning context, a typical connection request may...
We consider Label Switched Path (LSP) protection for connections with various protection grade requirements in multi-protocol label switching (MPLS) over wavelength division multiplexing (WDM) optical...
Transparent optical networking promises a cost-efficient solution for future core and metro networks because of the efficacy of switching high-granularity trunk traffic without opto-electronic convers...
Today's networks typically handle traffic engineering (e.g., tuning the routing-protocol parameters to optimize the flow of traffic) and failure recovery (e.g., pre-installed backup paths) independent...
Tiyachate, Ruarob. Protection in survivable WDM grooming network. (Under the direction of Assistant Professor Rudra Dutta). Optical networks have been widely expected to fill the need for tomorrow’s b...
This thesis work focuses on designing a survivable IP-core network with the minimal investment of spare capacity. A span-oriented spare capacity allocation (SCA) scheme is proposed to satisfy customer...
This thesis focuses on efficient provisioning of resilient Virtual Private Network (VPN) services. It first confirms the intuition that network resources can be more efficiently utilized when resilien...
This thesis addresses the problem of logical topology design for optical backbone networks subject to traffic following a Gaussian distribution. The network design problem is broken into three tasks: ...
This paper tackles the resource allocation problem in wavelength division multiplexing (WDM) networks supporting virtual private networks (O-VPN), in which working, and spare capacity are allocated in...
This paper tackles the resource allocation problem for wavelength division multiplexing (WDM) networks supporting virtual private networks (O-VPNs), in which working and spare capacity are allocated i...
This paper tackles the resource allocation problem for optical networks supporting Virtual Private Networks (OVPNs), in which working and spare capacity are allocated in the networks for satisfying a ...
This paper studies the impact of the selective reutilization (both before and after failure occurrence) of spare capacity, allocated for high class lightpath protection, to differentiate the survivabi...
This paper studies quantitatively the benefit of startup-failure-driven backup path reprovisioning in terms of connection availability in shared-path-protected optical networks. Numerical results show...
This paper proposes two wavelength overprovisioning strategies that can be used to improve the performance of path restoration in optical core networks under dynamic traffic conditions while consideri...
This paper proposes a novel mechanism to discover delay-optimal diverse paths using distributed learning automata for Voice-over-IP (VoIP) routing in service overlay networks. In addition, a novel lin...