Wireless N Speed Locked at 130Mbps

[woolfcomputing]

Hello,  My X61 has a 4965AGN adapter and no matter what I do I can only get my Wireless N connection up to 130Mbps.  I just repaired a friends Thinkpad 390X that had a new Netgear Wireless N USB adapter, and noticed that this thing connected at 300Mbps.  I don't get it.  Can someone explain why my X61 won't connect at 300Mbps?

[TICCS]

Hello, I have an X61 Tablet with the same problem. Look forward to getting the speed up on it also.

[billbolton Community Moderator]

woolfcomputing wrote:

Can someone explain why my X61 won't connect at 300Mbps?

If you router doesn't support the 5 Ghz band channels specified in the 802.11n Draft 2 standard, you will not get ~270 Mbsp connections from the Intel 4965AGN card.

At this time there are very few routers on the market that support 5Ghz band channels.  The LinkSys WRT600N is one that does and it does dleiver ~270 Mps throughput form Intel 4965AGN cards.

Older pre-Draft 2 802.11n kit may support ~270 Mbps throughput  on the 2.4 Ghz bands only, but is VERY prone to interference from 802.11g traffic on nearby Wifi networks and the industry determined that it was not a sustainable commercial solution for general urban area deployments.

Cheers,

Bill

[woolfcomputing]

There you go, fact and logic!  Thanks a bunch.  I have been reading some really wierd reasons on google and on this board.

[keithjoeris]

I am having the same issue - I can only connect @ 144Mbps - yet my other X61 with a linksys card connects @ 300Mbps - is it my settings?

[billbolton Community Moderator]

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keithjoeris wrote:

I am having the same issue - I can only connect @ 144Mbps - yet my other X61 with a linksys card connects @ 300Mbps - is it my settings?

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No its not.  the Linksys card is almost certainly Draft 1 spec compliant, not Draft 2 spec compliant like the 4965AGN.

Cheers,

Bill.

[keithjoeris]

Oh - well can I my built in wireless N get to 300 Mbps?

[curious99]

I have a very recent lenovo x61 tablet, with intel wireless wifi link 4965agn, my router is a

Linksys Wireless-N Gigabit Router with Storage Link        WRT350N

My connection is always 54 mbps, I am not even sure if it gets that fast, but the connections says it is 54 mbps, so that is the maximum speed

I understand the router has several frequencies, so that slower a or g wifi systems do not bog down the speed. Maybe the x61 connects on the wrong frequency?

I tried to play with the settings in modem properties, 

[erikwallen]

Your router also defines at which speed you can connect, your wireless card can only connect at the maximum speed the router allows.

G - 54mbits
G+ - 100mbits(?)

N - 300mbits

If you have an older G router you will not be able to get higher speeds from it than 54mbits/s. A LAN card can never connect on the wrong frequency but always connects on the fastest that both card and router allow.

Please also note that the further away you are from your router the slower the connection speed will be. For example standing next to a 300m/bit router will yeild something like 290m/bits per second, then it looks something like this:

3 feet    6 feet   1 wall    2 walls    different story
 280     250         150      100           30                              m/bits per second

So getting 100 or 110 m/bit connection wirelessly is nothing strange.

Message Edited by erikwallen on 12-01-2008 01:07 PM

[curious99]

I am close enough to the router. One thin wall, very short distance.

Signal strength very strong

Now one interesting fact. I put the router on "N only", and there was no more connection

Maybe I need to upgrade the wireless driver on my x61? (How?)

or some settings are wrong? or the N protocols don't match?

All indicates that the connection is G only (how can I be sure?)

 Looking for further advice from the experts