Environment-Aware Network-Level Design of Pinching-Antenna Systems--Part II: Geometry-Aware Case
The Chinese University of Hong Kong, Shenzhen（香港中文大学（深圳））；Nanyang Technological University（南洋理工大学）；South China University of Technology（华南理工大学）；Pazhou Laboratory（琶洲实验室）；Memorial University（纪念大学）；Queen’s University Belfast（贝尔法斯特女王大学）
This two-part paper aims to develop an environment-aware network-level design framework for generalized pinching-antenna systems to overcome the limitations of conventional link-level optimization, which is tightly coupled to instantaneous user geometry and thus sensitive to user mobility and localization errors. Part I investigates the traffic-aware case, where user presence is characterized statistically by a spatial traffic map and deployments are optimized using traffic-aware network-level metrics. Part II complements Part I by developing geometry-aware, blockage-aware network optimization for pinching-antenna systems in obstacle-rich environments. We introduce a grid-level average SNR model with a deterministic LoS visibility indicator and a discrete activation architecture, where the geometry-dependent terms are computed offline in advance. Building on this model, we formulate two network-level activation problems: (i) average-SNR-threshold coverage maximization and (ii) fairness-oriented worst-grid average-SNR maximization. On the algorithmic side, we prove the coverage problem is NP-hard and derive an equivalent mix-integer linear programming reformulation through binary coverage variables and linear SNR linking constraints. To achieve scalability, we further develop a structure-exploiting coordinate-ascent method that updates one waveguide at a time using precomputed per-candidate SNR contributions. For the worst-grid objective, we adopt an epigraph reformulation and leverage the resulting monotone feasibility in the target SNR, enabling an efficient bisection-based solver with low-complexity feasibility checks over the discrete candidate set. Simulations results validate the proposed designs and quantify their gains under different environments and system parameters.
Generalized Pinching-Antenna Systems: A Tutorial on Principles, Design Strategies, and Future Directions
The Chinese University of Hong Kong, Shenzhen（香港中文大学（深圳））；Southwest Jiaotong University（西南交通大学）；Southeast University（东南大学）；Nanyang Technological University（南洋理工大学）；Friedrich-Alexander-University Erlangen-Nürnberg (FAU)（埃尔朗根-纽伦堡弗里德里希·阿列克桑德大学）；The University of British Columbia（不列颠哥伦比亚大学）；Memorial University（纪念大学）；Aristotle University of Thessaloniki（塞萨洛尼基亚里士多德大学）
Two-Timescale Joint Transmit and Pinching Beamforming for Pinching-Antenna Systems
College of Information Science and Electronic Engineering, Zhejiang University（信息科学与电子工程学院，浙江大学）；Centre for Wireless Innovation (CWI), Queen’s University Belfast（无线创新中心（CWI），女王大学贝尔法斯特分校）；Department of Electrical and Electronic Engineering (EEE), The University of Hong Kong（电子与电气工程系（EEE），香港大学）
Pinching-Antenna System Design under Random LoS and NLoS Channels
The Chinese University of Hong Kong (Shenzhen)（香港中文大学（深圳））；State Key Laboratory of Advanced Rail Autonomous Operation（轨道交通运行控制系统国家实验室）；School of Computer Science and Technology, Beijing Jiaotong University（北京交通大学计算机科学与技术学院）；University of Manchester（曼彻斯特大学）
