2019/01/12 by Harshvardhan Tibrewal, Sravan Patchala, Tibrewal, Harshvardhan +5 · 2 citations
Computer Science · Decision Sciences · Engineering · Mathematics · #Advanced Bandit Algorithms Research #Cognitive Radio Networks and Spectrum Sensing #Distributed Sensor Networks and Detection Algorithms #FOS: Computer and information sciences #Machine Learning (cs.LG) #Machine Learning (stat.ML) #Smart Grid Energy Management #cs.LG #stat.ML
paper · pdf · doi:10.48550/arxiv.1901.03868
Part of this work is accepted for presentation in Infocom 2019 under the title "Distributed Learning and Optimal Assignment in Multiplayer Heterogeneous Networks"
openalex publication_date 2019/01/12 · arxiv created 2019/08/30 · arxiv updated 2019/09/02 · openalex created_date 2022/07/30 · openalex updated_date 2026/07/28
We consider an ad hoc network where multiple users access the same set of channels. The channel characteristics are unknown and could be different for each user (heterogeneous). No controller is available to coordinate channel selections by the users, and if multiple users select the same channel, they collide and none of them receive any rate (or reward). For such a completely decentralized network we develop algorithms that aim to achieve optimal network throughput. Due to lack of any direct communication between the users, we allow each user to exchange information by transmitting in a specific pattern and sense such transmissions from others. However, such transmissions and sensing for information exchange do not add to network throughput. For the wideband sensing and narrowband sensing scenarios, we first develop explore-and-commit algorithms that converge to near-optimal allocation with high probability in a small number of rounds. Building on this, we develop an algorithm that gives logarithmic regret, even when the number of users changes with time. We validate our claims through extensive experiments and show that our algorithms perform significantly better than the state-of-the-art CSM-MAB, dE3 and dE3-TS algorithms.