wireless2.4g和5.8g的wifi区别为什么看不到5.8g

来源：蜘蛛抓取(WebSpider) 时间：2017-02-18 02:25 标签： 5.8g 2.4g 天线区别
网络部署时如何选择2.4G和5.8G
&大家都知道，无线信号分为2.4G和5.8G频段，那么，2.4G和5.8G有什么区别呢？如何针对部署场景选择2.4G或5.8G设备呢？
&2.4G和5.8G的区别&
&2.4G频段：支持 IEEE
802.11b/g/n无线标准的，而且工作在2.4GHz这个频段上的，即
2.4Ghz~2.483GHz的无线频率。标准带宽为20MHz，扩展带宽为40MHz，所以称之为2.4G；
&5.8G信号频段：支持 IEEE
802.11ac无线标准的，而且工作在5.8GHz这个频段上的，即5.745GHz~5.825GHz的无线频率。
带宽能提高到40MHz甚至80MHz或更高，传输速度最高提升到了1Gbps，每秒可以传输约125MB的数据。
&简单来说就是：5.8G的优势在干扰少，频道传输更快更纯净，如果将2.4G比喻成城市道路，那5G就是高速公路，行驶的车比较少，所以更为顺畅。
&&如何根据场景选择2.4G或5.8G设备
&2.4G：由于2.4G推出时间较长，大多数设备都支持2.4G，所以2.4G频道干扰大，优化空间小，优化效果不明显，无法避免有时卡顿的现象；
&5.8G：信道比较纯净，干扰少，优化效果明显；
因此在选择2.4G或5.8G设备的时候，需要结合实际场景需求，确保良好的上网体验性。
&5.8G信号频道的应用场景：
&1、 无线办公场景：如办公室无线、高校教学、会议保障场景；
&2、 稳定性要求高的场景：如电子书包、工厂PAD扫码；
&高密场景：人流量高、接入终端密集区域，如广场、展厅等无线；
&4、&运营收费场景：搭建无线网络、出售无线账号用于运营，如学校无线Wi-Fi覆盖场景，此场景下要保证用户上网的流畅性和良好体验性，所以首选5.8G。
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以上网友发言只代表其个人观点，不代表新浪网的观点或立场。2.4G wireless Av Sender,icablelink
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