Is AT&T’s 3G network misconfigured?
In Commentary on 28 October 2009 tagged mobile technology, networking with no comments Brough Turner says the congestion problems on AT&T’s network may be the result of misconfigured routers: Recently I was talking with a friend whose company continuously operates (and monitors) multiple 3G data links on the Verizon Wireless, AT&T Wireless and Sprint PCS networks. His data shows periods when the round trip time for http requests goes over 8 seconds, on the AT&T Wireless network only! I don’t have a copy of his data that I can examine in detail, but when combined with David Reeds report, it certainly appears AT&T Wireless has configuration problems. If you read on you’ll see this may not be the result of gross stupidity, but someone at AT&T Wireless should be a little embarrassed. The argument he makes is really interesting. The limiting factor for AT&T’s network is over the air capacity. TCP stacks handle congestion by throttling back their traffic when they detect packet loss. If AT&T
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