tag:blogger.com,1999:blog-17500930.post8505756247690392860..comments2024-03-20T22:57:03.923+00:00Comments on Dean Bubley's Disruptive Wireless: A problem with WiFi-based offload?Dean Bubleyhttp://www.blogger.com/profile/05719150957239368264noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-17500930.post-68788070245552809142010-05-18T05:45:28.186+01:002010-05-18T05:45:28.186+01:00Large, single operator public Wifi is relatively e...Large, single operator public Wifi is relatively easy when it's implemented in a unified way. But that's unusual - normally you have thousands of independent hotspots or shared-access home Wifi operated by multiple different operators, with no central control or standardised SSIDs.<br /><br />It's easy to think that public hotspots are the most important manifestation if Wifi, but really they are a small sideshow compared to personal or business access points.Dean Bubleyhttps://www.blogger.com/profile/05719150957239368264noreply@blogger.comtag:blogger.com,1999:blog-17500930.post-30158575734357875892010-05-18T04:31:52.582+01:002010-05-18T04:31:52.582+01:00In Singapore we have this public free WiFi access ...In Singapore we have this public free WiFi access in all major shopping centers, libraries, some parks etc. and they have an authentication based on user-name password at WiFi level (without launching the browser, that is) and it seems to be working very well on my iPhone. It is called Wireless@SGx and there is a little auto-configuration programs for PCs as well wherein you need to authenticate only once. Something like that should solve it, no ?Ramannoreply@blogger.comtag:blogger.com,1999:blog-17500930.post-70420974814400415292010-05-17T02:29:39.380+01:002010-05-17T02:29:39.380+01:00Dean, this is a good point and becomes more of a ...Dean, this is a good point and becomes more of a problem in the home when in-home WiFi is used for video streaming and gaming. There is certainly a business case for managed high QoS wireless data services - there seems to some talks on this at the up-coming Femtocell World SummitAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-17500930.post-72830329037208823802010-05-16T17:52:14.899+01:002010-05-16T17:52:14.899+01:00The problem is that I now have both BT Openzone an...The problem is that I now have both BT Openzone and BT FON [its open-access service for home broadband] as "known hotspots" - and so if I walk down the street (using the phone) it is likely to see them repeatedly.<br /><br />I probably notice it because I tend to do things like RSS updates, download email etc while walking to the tube, so it's not asleep in my pocket.<br /><br />Fair point on femtos - although that will change once there is a move to "open access" mode rather than just closed to specific subscribers, which may occur in the near future.<br /><br />UMA is something I've written about since its inception in 2004. It does some things very well, but other things exceptionally badly.Dean Bubleyhttps://www.blogger.com/profile/05719150957239368264noreply@blogger.comtag:blogger.com,1999:blog-17500930.post-73022956168672146552010-05-16T17:20:57.321+01:002010-05-16T17:20:57.321+01:00Hi. There are easy solutions for both phenomena yo...Hi. There are easy solutions for both phenomena you describe: <br /><br />The iPhone can be switched to stop asking you for each network it finds without having to turn off Wifi. It will however connect to Wifi networks that you have already connected to if you keep the Wifi interface on and don't let the device sleep.<br /><br />I usually turn of Wifi when walking around the city but for a different reason: battery life. Even though theoretically Wifi will usually cost lest power than 3G when in use, searching and registering eats the battery fast and slows down the whole device.<br /><br />You might also have noted that unless you have heavily modified a jail-braked iPhone or connected an external battery, it will keep Wifi off when the screen is off and the device sleeps, so it's a non-issue when the device is in your pocket.<br /><br />As for femtocells, they are usually set up in such a way as to only allow pre-registered phones to connect, so it's a non-issue except with some public setups in subways, malls and such where their deployment is usually as carefully planned as the rest of the network and can do graceful handoffs.<br /><br />This is all data. I have not used UMA-enabled smartphones like some Blackberries, which can offload GSM voice calls to Wifi. It's a very cool technology for which there is something in the 802.11 spec and I believe the iPhone's Wifi stack supports it but it is network provider dependent and nobody seems to be doing it with the iPhone yet. Still, in that case it will be the same, if you set the iPhone to only connect to known networks you won't run in to any problems as the handoff to Wifi would only happen to known hotspots.@micronautahttps://www.blogger.com/profile/12125197612491369494noreply@blogger.com