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Tor is a widely used anonymity network that conceals user identities by routing traffic through encrypted relays, yet it remains vulnerable to traffic correlation attacks that deanonymize users by matching patterns in ingress and egress…

Cryptography and Security · Computer Science 2025-12-02 Binghui Wu , Dinil Mon Divakaran , Levente Csikor , Mohan Gurusamy

Contrary to the conclusions of a recent body of work where approximate shortest remaining processing time first (SRPT) flow scheduling is advocated for datacenter networks, this paper aims to demonstrate that per-flow fairness remains a…

Networking and Internet Architecture · Computer Science 2022-10-04 James Roberts , Dario Rossi

We introduce a new measure to capture fairness of a schedule in a single round robin (SRR) tournament when participants are ranked by strength. To prevent distortion of the outcome of an SRR tournament as well as to guarantee equal…

Combinatorics · Mathematics 2025-02-07 Sten Wessel , Cor Hurkens , Frits Spieksma

The (COVID-19) pandemic-induced restrictions on travel and social gatherings have prompted most conference organizers to move their events online. However, in contrast to physical conferences, virtual conferences face a challenge in…

Social and Information Networks · Computer Science 2020-10-29 Gourab K Patro , Abhijnan Chakraborty , Niloy Ganguly , Krishna P. Gummadi

In this paper, we present a novel approach for robust optimal resource allocation with joint carrier aggregation to allocate multiple carriers resources optimally among users with elastic and inelastic traffic in cellular networks. We use…

Networking and Internet Architecture · Computer Science 2015-07-07 Haya Shajaiah , Ahmed Abdelhadi , T. Charles Clancy

Optimal transport is a framework that facilitates the most efficient allocation of a limited amount of resources. However, the most efficient allocation scheme does not necessarily preserve the most fairness. In this paper, we establish a…

Optimization and Control · Mathematics 2021-04-01 Jason Hughes , Juntao Chen

The millimetre-wave spectrum provisions enormous enhancement to the achievable data rate of 5G networks. However, human blockages affecting the millimetre-wave signal can severely degrade the performance if proper resource allocation is not…

Information Theory · Computer Science 2020-07-28 Fadhil Firyaguna , Andrea Bonfante , Jacek Kibiłda , Nicola Marchetti

A set of divisible resources becomes available over a sequence of rounds and needs to be allocated immediately and irrevocably. Our goal is to distribute these resources to maximize fairness and efficiency. Achieving any non-trivial…

Computer Science and Game Theory · Computer Science 2020-09-29 Vasilis Gkatzelis , Alexandros Psomas , Xizhi Tan

We have a set of processors (or agents) and a set of graph networks defined over some vertex set. Each processor can access a subset of the graph networks. Each processor has a demand specified as a pair of vertices $<u, v>$, along with a…

Data Structures and Algorithms · Computer Science 2012-10-08 Venkatesan T. Chakaravarthy , Sambuddha Roy , Yogish Sabharwal

Motivated by a plethora of practical examples where bias is induced by automated-decision making algorithms, there has been strong recent interest in the design of fair algorithms. However, there is often a dichotomy between fairness and…

Artificial Intelligence · Computer Science 2023-07-13 April Niu , Agnes Totschnig , Adrian Vetta

Tor is vulnerable to network-level adversaries who can observe both ends of the communication to deanonymize users. Recent work has shown that Tor is susceptible to the previously unknown active BGP routing attacks, called RAPTOR attacks,…

Cryptography and Security · Computer Science 2017-04-07 Yixin Sun , Anne Edmundson , Nick Feamster , Mung Chiang , Prateek Mittal

In this paper we formulate the fixed budget resource allocation game to understand the performance of a distributed market-based resource allocation system. Multiple users decide how to distribute their budget (bids) among multiple machines…

Distributed, Parallel, and Cluster Computing · Computer Science 2007-05-23 Michal Feldman , Kevin Lai , Li Zhang

We consider scheduling and resource allocation in long-term evolution (LTE) networks across voice over LTE (VoLTE) and best-effort data users. The difference between these two is that VoLTE users get scheduling priority to receive their…

Networking and Internet Architecture · Computer Science 2019-01-09 Maryam Mohseni , S. Alireza Banani , Andrew W. Eckford , Raviraj S. Adve

This paper presents a radio resource block allocation optimization problem for cellular communications systems with users running delay-tolerant and real-time applications, generating elastic and inelastic traffic on the network and being…

Networking and Internet Architecture · Computer Science 2014-06-11 Mo Ghorbanzadeh , Ahmed Abdelhadi , Charles Clancy

In this work we consider the problem of downlink resource allocation for proportional fairness of long term received rates of data users and quality of service for real time sessions in an OFDMA-based wireless system. The base station…

Networking and Internet Architecture · Computer Science 2007-11-09 Tolga Girici , Chenxi Zhu , Jonathan R. Agre , Anthony Ephremides

We present the Waterfilling circuit selection method, which we designed in order to mitigate the risks of a successful end-to-end traffic correlation attack. Waterfilling proceeds by balancing the Tor network load as evenly as possible on…

Cryptography and Security · Computer Science 2016-12-01 Florentin Rochet , Olivier Pereira

Tor, one of the most popular censorship circumvention systems, faces regular blocking attempts by censors. Thus, to facilitate access, it relies on "pluggable transports" (PTs) that disguise Tor's traffic and make it hard for the adversary…

Performance · Computer Science 2023-09-27 Zeya Umayya , Dhruv Malik , Devashish Gosain , Piyush Kumar Sharma

The use of existing network devices as relays has a potential to improve the overall network performance. In this work, we consider a two-hop wireless relay setting, where the channels between the source and relay nodes to the destination…

Networking and Internet Architecture · Computer Science 2017-04-11 Mehdi Salehi Heydar Abad , Ozgur Ercetin , Eylem Ekici

In this paper, we introduce an approach for application-aware resource block scheduling of elastic and inelastic adaptive real-time traffic in fourth generation Long Term Evolution (LTE) systems. The users are assigned to resource blocks. A…

Networking and Internet Architecture · Computer Science 2014-05-30 Tugba Erpek , Ahmed Abdelhadi , T. Charles Clancy

The use of anonymity-based infrastructures and anonymisers is a plausible solution to mitigate privacy problems on the Internet. Tor (short for The onion router) is a popular low-latency anonymity system that can be installed as an end-user…

Cryptography and Security · Computer Science 2012-08-21 Sergio Castillo-Perez , Joaquin Garcia-Alfaro