在大多数的平安城市视频监控系统中,有线网络一直是主流的传输模式,通过架空或埋地方式搭建的有线网络,为视频监控系统中的图像传输提供了高质量的信息高速公路。然而随着城市建设项目的逐渐推进,有限的线路资源、复杂的地理环境往往成为有线网络发展的瓶颈。另外,网络建设过程中,城市管理者对环境保护、建网速度、建网成本、维护费用等的要求也在不断提升,在这种情况下, In most of the safe city video surveillance systems, the cable network has been the mainstream transmission mode. It provides a high-quality information superhighway for the image transmission in the video surveillance system through the overhead or buried wired network. However, with the gradual advancing of urban construction projects, the limited line resources and complicated geographical environment often become the bottleneck of the development of the wired network. In addition, in the process of network construction, the requirements of urban managers for environmental protection, network construction speed, network construction costs and maintenance costs are also constantly rising. Under such circumstances,