世纪冰雷 发表于 2012-10-16 09:05
讨论技术问题欢迎,说明观点,拿出资料数据。
无脑喷无法沟通就没辙了╮(╯▽╰)╭ ...
http://www6.nohold.net/Cisco2/uk ... amp;articleid=17415
Band 2.4 GHz 5 GHz
Channel three (3) non-overlapping channels 23 non-overlapping channels
Standard Wireless-B, G, and N Wireless-A and N
Network Range Wider Range Shorter Range
Interference Higher Lesser
http://forum.51nb.com/thread-1264553-1-3.html
http://www.right.com.cn/forum/thread-35436-1-1.html
http://compnetworking.about.com/od/wirelessfaqs/f/5ghz-gear.htm
GHz and Network Range
The higher the frequency of a wireless signal, the shorter its range. Thus, 2.4 GHz networks cover a substantially larger range than 5 GHz wireless networks. In particular, the higher frequency wireless signals of 5 GHz networks do not penetrate solid objects nearly as well as do 2.4 GHz signals, limiting their reach inside homes.
Advantage: 2.4 GHz.
找到一点讲述和测试的, 5G确实比2.4G的速度快, 有高带宽, 但是不可否认它确实覆盖范围小, 而且波动厉害, 如果复式楼层用5G还不如用2.4G, 衰减太厉害. 即使是在空旷的场所, 在两栋楼或更远距离比如超过500米共享无线网络, 你看看这时候5G还能达到吗. 且不说5G的初衷当时就是为了室内的短距离连接提供高带宽的, 其中比较小干扰.
http://net.yesky.com/121/8808621_1.shtml
而2.4G的11N动辄500米以上, 加上天线可达两三公司的覆盖范围可不是乱弹的.
所以看过你的文章后, 里面赞同的是5G有点高带宽, 小干扰, 传输速度快, 但是覆盖范围相应的就小了, 而且不用从物理理论上来说, 只是从各个用家的感受. 我目前使用的是linksys的WRT320N. 5G属于2.4G的补强, 比如无线电视, 无线音响, 但是还做不到大范围
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