justin
Australian
join:1999-05-28
Brooklyn, NY
Host:
IPv6
Business Connectiv..
Home/Office setup ..
Console/Handheld g..
Console Tech
|  bluetooth screwing up wifi !?
Why do I always have the problems that are not supposed to happen?
see the two screen shots. When I enable the bluetooth connection to my new P800 phone, my wifi connection goes so bad hardly any larger packets get through (witness pings).
As soon as I disable the bluetooth connection, and the bluetooth USB adaptor thingie stops flashing, and the phone reports disconnected computer, the wifi comes back with no lost packets.
Signal strength is indicated as 'excellent' the whole time but I don't trust the driver -- its a D-link ad-hoc.
How can this be?
It completely screws up my setup! |
|
DSLrgm
Premium,MVM
join:2002-08-22
Oak Park, MI
| It is a known fact that Bluetooth does not play nice in ISM. That it can easily overrun 802.11b.
Your card y be able to receive the BEACONs from the AP and report 'good' signal, as BEACONs are short frames that can get through a lot of noise. But try and pump any real data frames, and they just won't go.
802.15.2 is the IEEE version of Bluetooth that plays nice in ISM. So far there has been no interest in the Bluetooth community to adopt it. |
|
justin
Australian
join:1999-05-28
Brooklyn, NY
Host:
IPv6
Business Connectiv..
Home/Office setup ..
Console/Handheld g..
Console Tech
| said by DSLrgm  :
It is a known fact that
It seems like not everyone knows it..
»www.palminfocenter.com/view_stor···?ID=2714
there are MANY news articles like this one. But they are not true, as you say, tiny packets go thru, big ones do not. |
|
cmaenginsb
Premium,MVM
join:2001-03-19
Palmdale, CA
| reply to justin
Just an interesting note, that article is 2 years old. Most people I've run into do report problems with Bluetooth and 802.11b interoperability, especially if both devices are plugged into the same computer.
Also if you'll scroll down they predicted Bluetooth was going to outsell 802.11b in 2001. 
--
CCNA, Comtrain Certified Tower Climber |
|
DSLrgm
Premium,MVM
join:2002-08-22
Oak Park, MI
| reply to justin
I have heard tell that if the bluetooth device is off until actually needed and the file transfer is small, then 802.11 works. This is from a Microsoft developer.
But I think he is fiddling with code....
Basically, you run bluetooth then turn if off and get back to effective wireless: 802.11
The only arguement for bluetooth is battery requirements which are much lower than 802.11. Now 802.15.3a, UltraWideBand MIGHT change the landscape. But it is a totally different RF. |
|
DrTCP
Yours truly
Premium,ExMod 1999-04
join:1999-11-09
Round Rock, TX
| reply to justin
Yes, it is a common knowledge in wireless circles that bluetooth and 802.11b does not place nice. This is one reason why bluetooth is not as popular as it could be.
However, some companies have created some bluetooth chipsets that are supposed to be 802.11b friendly so both bluetooth and 802.11b could be integrated to the same laptop.
Perhaps bluetooth is nicer to 802.11g (OFDM) |
|
