Awarded by NSF #2451262

Physic‑Regulated Intelligent Reflecting Surfaces for Next‑Gen Spectrum Sharing & Sensing

IRS‑assisted wireless to enable dynamic coexistence of communication and sensing systems with GNN‑based channel understanding, physics‑regulated DRL resource allocation, and fairness across co‑located networks.

Latest News
  • Our paper: Qun Wang, Yingzhou Lu, Guiran Liu, Binrong Zhu, and Yang Liu, "LLM‑Assisted Alpha‑Fairness for 6 GHz Wi‑Fi/NR‑U Coexistence: An Agentic Orchestrator for Throughput, Energy, and SLA" has been accepted by IEEE IEMCON 2025 Conference.
  • Our paper: Guiran Liu, Binrong Zhu, Yang Liu, and Qun Wang, "Design of a Cross-Layer AI Agent for Secure Spectrum-Aware Network Slicing" has been accepted by Chen Institute Symposium for AI Accelerated Science 2025.
Overview

Next‑generation networks face spectrum congestion, path loss at mmWave/THz, and increasing coexistence with radar sensing. This project leverages Intelligent Reflecting Surfaces (IRS) to guide multipath, improve link reliability, and reduce interference while enabling equitable spectrum sharing. We pair graph neural networks (GNNs) for channel estimation and IRS configuration with physics‑regulated deep reinforcement learning (DRL) for resource allocation under strict QoS and fairness.

Spectrum Efficiency
IRS‑guided links, robust to blockage
Fair Coexistence
Shared access across comms & sensing
Learning‑Enhanced
Environment‑aware GNN + DRL
Prototype‑Driven
Simulations + real testbed
Project Fast Facts
  • Program: CISE CRII (NeTS)
  • Award: NSF #2451262
  • Institution: San Francisco State University
  • Duration: 2 years
  • Keywords: IRS, Spectrum Sharing, ISAC, GNN, DRL, Fairness
Team

Currently recruiting undergraduate researchers

Qun Wang
PI, Assistant Professor (SFSU) — PI
Guiran Liu
Graduate Student Researcher — Student
Binrong Zhu
Graduate Student Researcher — Student
Yang Liu
Student Researcher — Student

Lab
Networking, Information Security & Education (NISE) Lab — SFSU

Project
IRS‑Assisted Spectrum Sharing & Sensing (NSF #2451262)

Links