Chen Lili. Comparison and application analysis of broadband wireless access technology [J]. Science and Technology Information, 2009, (10). [2] Zhao. On the development and application of wireless communication technology [J]. Science and Technology Information, 2009, (20). [3] Cheng. 2009,( 1 1).[4] Liu Danpu, Hao Jianjun, Le Guangxin. WiMAX broadband wireless access technology and its application [J]. ZTE Technology, 2008, (0 1). [5] Tang Zhao. Analysis of transmission and exchange of expressway digital video monitoring [J] (22). [6] Yi Long. Looking at the current six hot wireless technologies from China Wireless Technology and Application Conference [J]. China Broadcasting, 2009, (09). [7] Cheng Guang. New Highlights of Wireless Technology Application [J]. China Broadcasting, 2009, (08). [8] Mao Qing. APN architecture and its typical. 2007,(03).[9] Jie Jiang, Jin Feng, Cai. Enterprise-level CA design in wireless e-commerce [J]. Journal of Zhejiang University of Technology, 2004, (05). [10], Li, Liu. Overview of intelligent video surveillance technology [J] (10). [1] Zhang enbao. Research on wireless broadband technology and its industrial application [J]. Shanghai Electric Power, 2009, (05) [2] Su Bin, Wang Mei. On the development prospect of enterprise network information management [J]. Mechanical management development, 2000, (02)[3]. Wang. Discussion on the application of softswitch technology in enterprise network [J]. Journal of Guangxi University (Natural Science Edition), 2004, (S2) [4] Zhou Xu, Yan Tinghe. Research on numerical control technology based on enterprise network [J]. Journal of Nantong Institute of Technology (Natural Science Edition), 2004, (02) [5] Zhang. One of enterprise networks. 1998, (0 1) [6] Chen Bing. Elements of building management information system in Shidong Power Supply Bureau [J]. East China Electric Power, 1999, (05) [7], Gu, Wu, Zhang Zuo. Research on enterprise network mode in the field of industrial automation [J] (07) [8] Wang. Networking technology of expressway special backbone communication network [J]. china municipal engineering, 2004, (06) [9] Tao Jun. How to prevent IPC$ $ invasion in enterprise network [J]. Railway Operation Technology, 2005, (02) [/kloc-]