多基站协作通感一体化体系架构及关键技术研究

Architecture and Key Technologies for Multi-Base Station Cooperative Integrated Sensing and Communication

通感一体化作为6G的关键技术之一,通过集成无线通信与感知功能,实现通感共存及相互协同辅助增益,提升网络智能化和效率。受限于单基站方案在通信区域覆盖干扰、感知精度不足等方面的瓶颈,多基站协作的通感一体化方案通过基站间联合数据传输及信息共享,显著提高网络容量和覆盖率,满足网络智能化和新型业务的需求。首先概述了多基站协作通感一体化的研究现状和相关概念,总结了现有网络架构及优势,梳理了多基站协作通感一体化的关键赋能技术,如多天线技术及其相干性设计、多基站资源管理策略与干扰抑制管控、以及通感融合接入技术下的智能分簇策略和信号同步方案等。最后从通感系统的算力支撑问题和性能评价指标两个方面探讨了多基站协作通感一体化的技术挑战及未来发展方向。

As one of the key technologies for 6G,ISAC enhances network intelligence and efficiency by integrating wireless communication and sensing functions to realize the coexistence and mutual collaborative gains.Limited by of single BS solutions in terms insufficient communication coverage and inadequate sensing accuracy,the multi-BS cooperative ISAC approach significantly improves the network capacity and coverage through joint data transmission and information sharing among BSs to meet the demands of network intelligence and emerging services.This paper first outlines the current research status and clarifies related concepts on mutli-BS cooperative ISAC,and summarizes the existing network architectures and the corresponding advantages.Then the key enabling technologies are reviewed,including multi-antenna techniques and their coherence design,multi-BS resource management strategies and interference suppression control,as well as intelligent clustering strategies and signal synchronization schemes under ISAC access technologies.Finally,this paper discusses the technical challenges and future development directions of multi-BS cooperative ISAC from the perspectives of computational power support and performance evaluation metrics for ISAC systems.