Wireless speed

I have a O2 wireless box IV and a Samsung r530 laptop. How can I get a speed above 65mbps while using wireless?

Cheers
George

Does the wireless box IV support wireless N? If not ditch it or turn off wireless and connect a wireless AP which is N capable.

Does the PC have a Wireless N card? If not fit one if possible.

Are their lots of other wireless networks in the area? Use inSSIDer (Google it) to see what channels they are using and change the channels used by yours so there is as little overlap as possible.

Since inSSIDer is free - try this first

Yip both wireless box iv and laptop are wireless N, i am using channel 13 on the router as i have already done a scan using inssider and on channel 13 the closest person is on channel 6

Cheers
George

Single channel wireless N has a maximum of 150 Mbps, 75Mbps down and 75 up.

So question is what is the 65 Mbps figure you mention?

You need to use two channels (40MHz) rather than the standard 20 MHz which comes from using a 300 Mbps N router and wireless card. In short two flavours of the wireless N system.

The 65mbps is the actual wireless speed reported by the router, but if what you say is correct 65mbps download and 65mbps upload makes 130mbps which is what the router is capable off. I just thought the 130mbps just applied to download speed

cheers
george

Tradition is for wireless routers to quote the sum of the speeds in both directions.

65Mbps is single (spatial) stream, 20Mhz width, Long GI:
http://en.wikipedia.org/wiki/IEEE_802.11n-2009#Data_...

and I'd assume the number of spatial streams will be related to the number of antennas in both access point and laptop.

The poster could try short GI if an option on the AP and it may increase to 72Mbps (not 75), If there are few neighbouring networks and few devices connecting that will probably be ok.

Although the poster could try to set "40Mhz" (double-width) or "Auto 20/40" not all devices are compatible and there will be interference unless the neighbour moved down to channel 5.
In this case the poster could stay on channel 13 and 40MHz would effectively be 13+9 (plus overlaps) leaving 1+5.

At work, we never deploy 40Mhz in 2.4GHz unless there are no other networks in range and we don't worry about trying to eek out small gains from short GI because the band is already so congested so Long GI may mean less retransmits anyway.

In addition, if using encryption the poster should use WPA2-AES (CCMP) not WPA1 nor TKIP.
Wireless hardware acceleration is available for AES (via the chipsets or enhanced processor instruction sets) and may not achieve maximum rates on WEP or TKIP.

Edited by prlzx (Tue 19-Jun-12 20:32:06)