Monitoring deployments often require reliable long-range wireless links to intermittently upload sensor logs and short video snapshots. Wi-Fi HaLow (IEEE~802.11ah) is a promising candidate due to sub-1 GHz propagation and bandwidth-flexible PHY modes. This summary paper reports a field characterization organized around three deployment-driven regimes: (i) point-to-point Non-Line-of-Sight (NLoS) links; (ii) point-to-point Line-of-Sight (LoS) links over several-hundred-meter distances; and (iii) LoS mesh networking with fixed relay nodes for range extension. Using commodity HaLow dongle-class nodes in all regimes, we report application-layer goodput and monitoring-centric update latency based on transferring a representative ``heavy'' object (a $\sim$30 s video file). The measurements reveal (a) a clear bandwidth--range tradeoff and an NLoS coverage boundary around $\sim$120 m, (b) gradual throughput decay under LoS up to 814 m in single-hop with 0.15 Mbps at the farthest point, and (c) kilometer-class extension under LoS when fixed relays are introduced, reaching 901 m (two fixed relays) and 1110 m (three fixed relays
翻译:监测部署通常需要可靠的长距离无线链路,以间歇性上传传感器日志和短视频快照。Wi-Fi HaLow(IEEE 802.11ah)凭借亚1 GHz传播特性及带宽灵活的物理层模式,成为极具前景的候选技术。本摘要报告围绕三种部署驱动场景组织现场特性分析:(i)点对点非视距(NLoS)链路;(ii)数百米距离上的点对点视距(LoS)链路;(iii)采用固定中继节点实现距离扩展的视距网状网络。在所有场景中均使用商用HaLow网卡级节点,通过传输代表性"重型"对象(约30秒视频文件)报告应用层吞吐量及监测中心更新延迟。测量结果揭示:(a)清晰的带宽-距离权衡关系,及约120米的非视距覆盖边界;(b)视距下单跳最远达814米时吞吐量逐渐衰减,最远点吞吐量为0.15 Mbps;(c)引入固定中继后视距条件可实现千米级扩展,分别达到901米(两个固定中继)和1110米(三个固定中继)。