The thesis has researched the personal area network in near field intra body communication

无线广域网、无线城域网、无线局域网、无线个域网、无线体域网等无线网络 的基本特点，然后从无线网络的开放性、移动性、动态变化以及传输信号的不稳定性和终端设备等方面比较 了无线网络安全和有线网络安全的区别，最后提出并详细解释了解决无线网络安全问题的一般思路。-This article firstly introduces basic characteristics of various wireless networks, such as wireless wide area netwo