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Search Publications by: Vladimir Marbukh (Fed)

Displaying 76 - 100 of 162

A Mathematical Model of Joint Congestion Control and Routing in Multisource Networks

September 28, 2011

Author(s)

Fern Y. Hunt, Vladimir V. Marbukh, Yi Wang

In this paper we study a model of joint congestion control and routing in a ring of network sources with a single destination at the center. A utility maximization problem subject to routing constraints is posed and equations for its solution are presented

Distributed Deployment Algorithms for Improved Coverage in Mobile Sensor Networks

September 28, 2011

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Kaveh Moezzi, Amir G. Aghdam

In this paper, various sensor deployment strategies are studied for effective coverage in wireless sensor networks. In the proposed algorithms, each sensor discovers the coverage holes within its Voronoi polygons, and then moves in a proper direction to

Cooperative Sensor Relocation in a Mobile Sensor Network by Distributed Subgradient Algorithm

August 20, 2011

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Ahmadreza Momeni, Amir G. Aghdam

Collaborative sensor relocation has potential to improve Mobile Sensor Network (MSN) performance while prolonging its life span by conserving sensor battery energy. However, lack of centralized control, variety of performance criteria, numerous

Conservation Law Based Cross-Layer Optimization of a Wireless Network for Diverse Rate/Delay Requirements

July 11, 2011

Author(s)

Vladimir V. Marbukh

Conventional approach to cross-layer network optimization assumes elastic users adjusting their bandwidth requirements in response to the resource congestion prices. This assumption leads to the Network Utility Maximization (NUM) framework. However, often

Robust Cross-Layer Network Optimization for Diverse QoS Requirements: Work in Progress

July 6, 2011

Author(s)

Vladimir V. Marbukh

AbstractConventional approach to cross-layer network optimization assumes elastic users adjusting their bandwidth requirements in response to the resource congestion prices. This assumption leads to Network Utility Maximization (NUM) framework with

Towards Evolutionary-Pricing Framework for Mobile Sensor Network Self-organization

July 18, 2010

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Ahmadreza Momeni, Amir G. Aghdam

This paper reports on work in progress on developing a unified co-evolutionary/pricing framework for Mobile Sensor Networks (MSN) self-organization. MSN self-organization involves cooperative sensor positioning and formation of a multi-hop Mobile Ad-hoc

Optimal Target Tracking Strategy with Controlled Node Mobility in Mobile Sensor Networks

June 30, 2010

Author(s)

Kamran Sayrafian, Vladimir V. Marbukh, Hamid Mahboubi, Ahmadreza Momeni, Amir G. Aghdam

This paper is concerned with target tracking using a network of collaborative sensors. The objective is to compute (online) the desired sensing and communication radii of sensors as well as their location at each time instant, such that a set of prescribed

Vulnerability of Selfish Routing to Attacks: Game-theoretic Models and Initial Results

June 30, 2010

Author(s)

Daniel I. Genin, Vladimir Marbukh, Anastase Nakassis

This paper reports on work in progress on assessing and mitigating selfish routing vulnerability to strategic attacks. We explain mechanisms leading to this vulnerability, propose the corresponding game-theoretic model, solve this model for some particular

A Model of Joint Congestion Control and Routing Through Random Assignment of Paths

February 16, 2010

Author(s)

Fern Y. Hunt, Vladimir V. Marbukh

We investigate the trade-off between utility and path diversity in a model of congestion control where there can be multiple routes between two locations in a network The model contains a random route allocation scheme for each source s (user or TCP

An On-Off Source Model for Improved Buffer Statistics Modeling in TCP Fluid Approximation Models.

January 22, 2010

Author(s)

Daniel I. Genin, Vladimir V. Marbukh

We propose using an on-off fluid source model for queuing statistics under TCP. This model was originally introduced to model queuing statistics of ATM multiplexers by D.Anick, D.Mitra and M.M.Sondhi. A good approximation for packet loss probability is

Self-Deployment Algorithms for Coverage Problem in a Network of Mobile Sensors with Unidentical Sensing Range

December 6, 2009

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Kaveh Moezzi, Amir G. Aghdam

In this paper, efficient sensor deployment algorithms are proposed to improve the coverage area in the target field. The proposed algorithms calculate the position of the sensors iteratively based on the existing coverage holes in the target field. The

Measuring the Utility/Path Diversity Tradeoff in Multipath Protocols

October 20, 2009

Author(s)

Fern Y. Hunt, Vladimir V. Marbukh

We derive a model of congestion control where the trade-off between utility and path diversity can be investigated. In a network where there can be multiple routes between locations, each source is assigned a route according to a random allocation scheme

Mobile Sensor Networks Self-organization for System Utility Maximization: Work in Progress

August 23, 2009

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian

This paper reports on work in progress on mobile sensor network self-organization for system utility maximization with system utility being the difference between the aggregate utility of sensor information and penalty associated with sensor battery energy