Around a year ago, PC Pro received an email from reader Alan Ingram with a plea for help. He wrote:
One aspect of Wi-Fi technology that seems to have been forgotten about is point-to-point connections. I’m responsible for two sites that employ point-to-point Wi-Fi to link buildings. Both have challenges of distance, line-of-sight and so on. But after a lot of messing around, the best solution I came up with has been a pair of Buffalo WHR-HP-G54 running DD-WRT connected up to D-Link ANT24-210021dBi directional 11g grid antennas. This gave me a reasonably quick connection (a little of 20Mbits/sec) over a few hundred metres, even when line-of-sight was iffy at best.
However, this kit is now seven years old. With VDSL I could theoretically achieve similar speeds by routing the data halfway around the country via a consumer-level broadband connection to each building; there must be a better solution now?
The problem seems to be that most of the advances in Wi-Fi are around MIMO, which require a router looking like a Christmas tree, with more and more antennas. This doesn’t lend itself well to directional antennas from what I can gather. Has there been a wireless standard or router since 802.11g that’s designed for single antennas, that allows for better stability and throughput than 802.11G?
Alan is Founder and Technical Director at ePartner Consulting Ltd in Lightwater, Surrey, a company that’s heavily into areas such as business process management, workflow automation and data capture. The company uses its site-to-site wireless link mainly for things such as VM replication, where Alan reports that the initial copying can take days.