Weighted Sum Age of Information Minimization in Wireless Networks with Aerial IRS

Wanting Lyu; Yue Xiu; Songjie Yang; Phee Lep Yeoh; Yonghui Li

Weighted Sum Age of Information Minimization in Wireless Networks with Aerial IRS

Signal Processing 2022-03-10 v1

Authors: Wanting Lyu , Yue Xiu , Songjie Yang , Phee Lep Yeoh , Yonghui Li

Abstract

In this letter, we analyze a terrestrial wireless communication network assisted by an aerial intelligent reflecting surface (IRS). We consider a packet scheduling problem at the ground base station (BS) aimed at improving the information freshness by selecting packets based on their AoI. To further improve the communication quality, the trajectory of the unmanned aerial vehicle (UAV) which carries the IRS is optimized with joint active and passive beamforming design. To solve the formulated non-convex problem, we propose an iterative alternating optimization problem based on a successive convex approximation (SCA) algorithm. The simulation results shows significant performance improvement in terms of weighted sum AoI, and the SCA solution converges quickly with low computational complexity.

Keywords

age of information intelligent reflecting surface unmanned aerial vehicle beamforming packet scheduling successive convex approximation wireless networks

Cite

@article{arxiv.2203.04525,
  title  = {Weighted Sum Age of Information Minimization in Wireless Networks with Aerial IRS},
  author = {Wanting Lyu and Yue Xiu and Songjie Yang and Phee Lep Yeoh and Yonghui Li},
  journal= {arXiv preprint arXiv:2203.04525},
  year   = {2022}
}

Weighted Sum Age of Information Minimization in Wireless Networks with Aerial IRS

Abstract

Keywords

Cite

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