Movable Antenna Enabled Dual-Scale Beams for Resilient Communication, Sensing, and Security

Upcoming sixth-generation (6G) wireless networks are expected to provide ultra-high data rates, precise sensing capabilities and strong security. Movable antenna (MA) technology emerges as a promising solution by dynamically reconfiguring antenna positions in real-time, thereby exploiting spatial degrees of freedom and aligning with the communication-sensing-security framework integral to 6G. The core concept of this study focuses on MA-enabled dual-scale beams, a novel framework that synergistically combines wide and narrow beams to enable adaptation across various scenarios. The paper begins by presenting the principles of MA-enabled dual-scale beams and their application scenarios. We proceed to discuss resilient communications and the design of dual-scale beams to enhance communication resilience. By integrating wide and narrow beams, we explore a two-phase sensing strategy to improve sensing agility and precision. Through wide beam isolation and narrow beam encryption, dual-beams can strengthen the physical layer security for massive users. Finally, we explore future research directions to advance the implementation of dual-scale beam technology.