The application of LTE technology in broadband digital trunked communication has become the research focus of communication field. Combined with the development requirements and the current situation of trunked communication system, this paper analyzes the challenges of LTE broadband cluster technology and expounds the measures to solve the key technology.%LTE技术在宽带数字集群通信中的应用，已经成为通信领域的研究热点。本文结合集群通信系统发展需求和现状，分析了LTE宽带集群技术面临的挑战，阐述了解决关键技术的方法。
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