Wireless improve???

[alexss]

I dont get it , whats the wifi improvement?? Does it improve every wifi connection or only a specific one?

 

[skimonkey]

This will be very hard to specifically answer until our members have the iPad 4 in their hands.

In the meantime, I'd suggest that you refer to some of these New section threads that were created today after the launch announcement. I have included the majority of all the new product lines. This was intended to help answer some of your questions related to your other thread.

http://www.ipadforums.net/apple-ipad-news/93368-apple-also-teases-their-fourth-gen-ipad.html

http://www.ipadforums.net/apple-ipad-news/93381-meet-ipad-mini.html

http://www.ipadforums.net/apple-ipa...g-announced-apple-event-new-apple-ibooks.html

http://www.ipadforums.net/apple-ipa...d-announcement-new-13-3-inch-macbook-pro.html

 

[col.bris]

There are new faster wifi routers on the market so the upgrade means the iPad now supports the new wifi technology. This is more important in business where many companies are upgrading their wifi networks. In order to take advantage of the upgrade you would have to buy a new modem router or router that offers the same standard.

 

[digitalbits6]

Improved Wi-Fi

The iPad 4th gen supports dual band (2.4GHz and 5GHz) 802.11n Wi-Fi along with channel bonding, enabling twice as much faster download speeds. The download speeds can reach up to 150Mbps, depending on your service provider.

Channel bonding is a new feature in 802.11 Wireless-N technology and a big part of the Wireless N speed increase. For older 802.11b/g, signals were transmitted using a slice of the operating band 20MHz wide (this is called a channel). Under channel bonding, two 20MHz channels instead of one are used by one router, increasing the rate of transmission of data.
[h=2]802.11 Frequencies: 2.4GHz and 5GHz[/h] Channel bonding is primarily intended for use with the very wide 5GHz band. Neighboring wireless routers have to operate on different non-overlapping channels in order to avoid interference and thus lower signal quality. Since 5GHz has a lot of available channels, it’s generally easy to use channel bonding without having interference problems with other devices. While channel bonding can also be used with the 2.4GHz band on a Wireless-N router, there are certain limitations. The main problem is that the 2.4GHz is much narrower than the 5GHz band – only three non-overlapping channels are available (four in many countries outside North America).


The other problem with using channel bonding on 2.4GHz is the issue of that band’s crowdedness. Not only are most routers currently in use using Wireless-G and thus the 2.4GHz band, but other wireless devices such as Bluetooth headsets and cordless keyboards often use this band as well. This of course is only made worse if a router is taking up two channels instead of one, which is why channel bonding on this band is most often unfeasible in populated areas. In this way much of the purported Wireless N speed boost relies on the 5GHz band being used.


So channel bonding is a very useful feature of Wireless-N capable routers. It boosts data transfer rates and is one of the main sources of Wireless N’s speed increase relative to Wireless G. While channel bonding can be used with the 2.4GHz band, this is rarely viable in heavily populated areas with too many other networks and devices sharing the band.

If you have a new router that supports 5GHz or dual band, then maybe you have the free air space bandwidth to use channel bonding and you can see the improvement in speed. I'll have to test this out on my AirPort Extreme dual band 2.4GHz / 5.0GHz Router. Some of the MacBooks Pros support WiFi channel bonding. The bigger concern will be how fast your service provider is.