随着国外公共安全机构对专业宽带移动通信的需求日益增长,各国政府顺应潮流,在专业宽带移动通信网络的规划方面作出了不懈的努力,其中尤以部分发达国家最为突出。这些国家普遍进行了大量的研究和咨询,有的出台了一系列国家层面的规划,甚至还建立了专业宽带网络。具体的工作主要体现在两个方面:一是划分宽带专用频谱,保证专业宽带网络的频谱资源需求;二是采取相应措施, With the increasing demand for professional broadband mobile communications by foreign public safety agencies, governments of all countries have followed the trend and made unremitting efforts in the planning of professional broadband mobile communication networks, with some developed countries being the most prominent ones. These countries generally conduct a large number of research and consulting, and some introduced a series of national-level planning, and even established a professional broadband network. Specific work is mainly reflected in two aspects: First, the division of broadband dedicated spectrum to ensure that professional broadband network spectrum resource requirements; the second is to take appropriate measures,