318 citations · 823 across the 19 of their papers we have counts for
25 papers
State Amplification and Masking While Timely Updating
Omur Ozel, Aylin Yener, Sennur Ulukus
In status update systems, multiple features carried by the status updating process require pursuit of objectives beyond timeliness measured by the age of information of updates. We…
Intermittent Status Updating Through Joint Scheduling of Sensing and Retransmissions
Omur Ozel, Parisa Rafiee
Consider an energy harvesting node where generation of a status update message takes non-negligible time due to sensing, computing and analytics operations performed before making…
On Age and Value of Information in Status Update Systems
Peng Zou, Omur Ozel, Suresh Subramaniam
Motivated by the inherent value of packets arising in many cyber-physical applications (e.g., due to precision of the information content or an alarm message), we consider status u…
Maintaining Information Freshness in Power-Efficient Status Update Systems
Parisa Rafiee, Peng Zou, Omur Ozel +1
This paper is motivated by emerging edge computing systems which consist of sensor nodes that acquire and process information and then transmit status updates to an edge receiver f…
Timely Status Updating Through Intermittent Sensing and Transmission
Omur Ozel
We consider a novel intermittent status updating model where an energy harvesting node with an intermittent energy source performs status updating to a receiver through non-preempt…
Optimizing Information Freshness Through Computation-Transmission Tradeoff and Queue Management in Edge Computing
Peng Zou, Omur Ozel, Suresh Subramaniam
Edge computing applications typically require generated data to be preprocessed at the source and then transmitted to an edge server. In such cases, transmission time and preproces…
Active Status Update Packet Drop Control in an Energy Harvesting Node
Parisa Rafiee, Omur Ozel
This paper considers an energy harvesting sensor node with battery size that recharges its battery through an incremental energy harvesting process and receives updates f…
Trading Off Computation with Transmission in Status Update Systems
Peng Zou, Omur Ozel, Suresh Subramaniam
This paper is motivated by emerging edge computing applications in which generated data are pre-processed at the source and then transmitted to an edge server. In such a scenario,…
Relative Age of Information: A New Metric for Status Update Systems
Peng Zou, Omur Ozel, Suresh Subramaniam
In this paper, we introduce a new data freshness metric, relative Age of Information (rAoI), and examine it in a single server system with various packet management schemes. The (c…
Waiting before Serving: A Companion to Packet Management in Status Update Systems
Peng Zou, Omur Ozel, Suresh Subramaniam
In this paper, we explore the potential of server waiting before packet transmission in improving the Age of Information (AoI) in status update systems. We consider a non-preemptiv…
Optimizing Robustness against Cascading Failures under Max-Load Targeted Attack
Omur Ozel, Bruno Sinopoli, Osman Yagan
Motivated by reliability of networks in critical infrastructures, we consider optimal robustness of a class of flow networks against a \textit{targeted} attack, namely max-load tar…
Robustness of flow networks against cascading failures under partial load redistribution
Omur Ozel, Bruno Sinopoli, Osman Yagan
We study the robustness of flow networks against cascading failures under a partial load redistribution model. In particular, we consider a flow network of lines with initial l…
Sending Information Through Status Updates
Abdulrahman Baknina, Omur Ozel, Jing Yang +2
We consider an energy harvesting transmitter sending status updates regarding a physical phenomenon it observes to a receiver. Different from the existing literature, we consider a…
A Bernoulli-Gaussian Physical Watermark for Detecting Integrity Attacks in Control Systems
Sean Weerakkody, Omur Ozel, Bruno Sinopoli
We examine the merit of Bernoulli packet drops in actively detecting integrity attacks on control systems. The aim is to detect an adversary who delivers fake sensor measurements t…
Energy Harvesting Communications under Explicit and Implicit Temperature Constraints
Abdulrahman Baknina, Omur Ozel, Sennur Ulukus
We consider an energy harvesting communication system where the temperature dynamics is governed by the transmission power policy. Different from the previous work, we consider a d…
Optimal Energy and Data Routing in Networks with Energy Cooperation
Berk Gurakan, Omur Ozel, Sennur Ulukus
We consider the delay minimization problem in an energy harvesting communication network with energy cooperation. In this network, nodes harvest energy from nature for use in data…
Energy Harvesting Transmitters that Heat Up: Throughput Maximization under Temperature Constraints
Omur Ozel, Sennur Ulukus, Pulkit Grover
Motivated by damage due to heating in sensor operation, we consider the throughput optimal offline data scheduling problem in an energy harvesting transmitter such that the resulti…
The Binary Energy Harvesting Channel with a Unit-Sized Battery
Kaya Tutuncuoglu, Omur Ozel, Aylin Yener +1
We consider a binary energy harvesting communication channel with a finite-sized battery at the transmitter. In this model, the channel input is constrained by the available energy…
Optimal Scheduling for Energy Harvesting Transmitters with Hybrid Energy Storage
Omur Ozel, Khurram Shahzad, Sennur Ulukus
We consider data transmission with an energy harvesting transmitter which has a hybrid energy storage unit composed of a perfectly efficient super-capacitor (SC) and an inefficient…
Energy Cooperation in Energy Harvesting Communications
Berk Gurakan, Omur Ozel, Jing Yang +1
In energy harvesting communications, users transmit messages using energy harvested from nature during the course of communication. With an optimum transmit policy, the performance…
AWGN Channel under Time-Varying Amplitude Constraints with Causal Information at the Transmitter
Omur Ozel, Sennur Ulukus
We consider the classical AWGN channel where the channel input is constrained to an amplitude constraint that stochastically varies at each channel use, independent of the message.…
Wiretap Channels: Implications of the More Capable Condition and Cyclic Shift Symmetry
Omur Ozel, Sennur Ulukus
Characterization of the rate-equivocation region of a general wiretap channel involves two auxiliary random variables: U, for rate splitting and V, for channel prefixing. Evaluatio…
Transmission with Energy Harvesting Nodes in Fading Wireless Channels: Optimal Policies
Omur Ozel, Kaya Tutuncuoglu, Jing Yang +2
Wireless systems comprised of rechargeable nodes have a significantly prolonged lifetime and are sustainable. A distinct characteristic of these systems is the fact that the nodes…
Broadcasting with an Energy Harvesting Rechargeable Transmitter
Jing Yang, Omur Ozel, Sennur Ulukus
In this paper, we investigate the transmission completion time minimization problem in a two-user additive white Gaussian noise (AWGN) broadcast channel, where the transmitter is a…