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General discussion

wireless lan drop from 54mbps to 1mbps?

Apr 29, 2005 8:37AM PDT

I have a wireless network using 802.11g. I have 2 laptops, one with a centrino (sanora) and the other with a celeron. the problem is when I connect with my network the conection is great but the speed drops from 54mbps to 1 mbps. this only happens with the centrino machine. I am a gamer can anyone help me figure this problem out?

Discussion is locked

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Connecting with a 802.11b device....
Apr 29, 2005 8:41AM PDT

will bring the whole network down to that speed.

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Wireless LAN speed drops from 54mbps to 1mbps?
May 24, 2005 7:50AM PDT

I'm having the same issue on a Sony VAIO VGN-T140P. It also has the Intel Centrino. The laptop has Windows XP SP2. Originally I thought it was the firewall, but I've disabled it. It will work fine for about 5 minutes and during that time drop the speed to 1mbps. Have you been able to resolve the issue?

John

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see Michael's answer...
May 25, 2005 12:04AM PDT

Centrino is just the Intel brand name for a combination of an Intel mobile chipset and an integrated wireless chip. The Centrino specification doesn't address what speed/standard the wireless chip uses. If the particular wireless chip in your computer is based on the 802.11b standard (11 Mbs maximum under the best conditions, usually much less under real world conditions), then having a newer 802.11g 54 Mbs access point is meaningless. It will slow down to the slowest client, namely the 802.11b client, and all other clients (including any 802.11g clients) will be held to the lower speed too. Then once the maximum speed is lowered, it will continue to renegotiate actual speeds up and down in real time based on actual conditions. There could be changing radio interference conditions or changing data transmission demands. If you are losing connectivity or throughput over time, it could be as simple as you never had the throughput in the first place, but it took some time for the system utility to recalculate the average actual speed. Or there are other things going on in your physical enviroment.

dw