7 papers
Locally Adaptive Scheduling Policy for Optimizing Information Freshness in Wireless Networks
Howard H. Yang, Ahmed Arafa, Tony Q. S. Quek +1
Optimization of information freshness in wireless networks has usually been performed based on queueing analysis that captures only the temporal traffic dynamics associated with th…
Timely Cloud Computing: Preemption and Waiting
Ahmed Arafa, Roy D. Yates, H. Vincent Poor
The notion of timely status updating is investigated in the context of cloud computing. Measurements of a time-varying process of interest are acquired by a sensor node, and upload…
On Timely Channel Coding with Hybrid ARQ
Ahmed Arafa, Karim Banawan, Karim G. Seddik +1
A status updating communication system is examined, in which a transmitter communicates with a receiver over a noisy channel. The goal is to realize timely delivery of fresh data o…
How to Price Fresh Data
Meng Zhang, Ahmed Arafa, Jianwei Huang +1
We introduce the concept of a fresh data market, in which a destination user requests, and pays for, fresh data updates from a source provider. Data freshness is captured by the {\…
Age Minimization in Energy Harvesting Communications: Energy-Controlled Delays
Ahmed Arafa, Sennur Ulukus
We consider an energy harvesting source that is collecting measurements from a physical phenomenon and sending updates to a destination within a communication session time. Updates…
Energy Harvesting Networks with General Utility Functions: Near Optimal Online Policies
Ahmed Arafa, Abdulrahman Baknina, Sennur Ulukus
We consider online scheduling policies for single-user energy harvesting communication systems, where the goal is to characterize online policies that maximize the long term averag…