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> Bluetooth ate my Wi-Fi 802.11b!
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Well I found another drawback with mating the P800 with a desktop PC.
bluetooth turns a less than stellar wifi signal into an unusable one!
Its particularly a problem if you want to avoid gprs (and charges) and use the net via the bluetooth connection you establish to your desktop. Bluetooth transmits, and the desktop tries to talk wifi to home base, and gets collisions, and performance drops to zero. I can't even ping with 1k packets while bluetooth is doing anything!
I imagine its the same if you talk on the bluetooth headset in front of a wifi enabled desktop.. although I havent tested that.
its amazing to me that these two standards sit in the same frequency spectrum and give each other grief. What is a wifi office going to do when all the execs come loaded down with bluetooth devices!? Do what I'm going to have to pay money to do? go to 5ghz 802.11a!!??
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Posted: 2003-05-28 03:21:01
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Unfortunately, this was discussed a long time ago between both the 802.11 people and the Bluetooth SIG.
Since 802.11b (& the new
g) are based on older technology, they are less tolerant to radio noise.
WiFi wasn't designed to operate in extremely noisy environments... Bluetooth was.
Bluetooth assumed that since it was the 'new kid' on the block, it would have to find a way to work around all the other 2.4Ghz devices (WiFi, DSS cordless phones, etc..) So it's frequency hopping scheme is a lot more adaptive to noisy environments
They found that Bluetooth has no problems hopping around, and finding holes within the band. However, since Wifi is a lot slower when it does frequency hops, a connection error usually occurs before it finds a new frequency... and the worst part is, Wifi will still go back to the used frequency on it's next hop since it doesn't 'remember' that, that frequency is still being used.
Now,
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Posted: 2003-05-28 04:48:29
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Did bluetooth eat the end of your post too
?
Anyway, yes, that explains why when bluetooth is on air, small packet pings go through fine over wifi, but big ones do not. They must get corrupted repeatedly because wifi needs too long a chunk of unspoiled air for the complete packet to go through.
I hope for the sake of wider adoption (there are LOADS of people out there on linksys wifi routers and the like) that this is only a problem for people with really poor link quality, otherwise I can see consumers complaining (why do i have to upgrade my wifi network just because I want to use bluetooth??) and reporters writing reports. After all, if you google, you'll see several "studies" and reports-on-studies saying bluetooth does NOT interfere significantly with wifi. When clearly its more than possible to not just interfere, but to cut the connection off completely!
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Posted: 2003-05-28 05:19:30
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Ok, my experience with this is completely different. I really dunno the technical side of things, but this is what I experienced.
I have a bluetooth dongle connected to my machine that regularly checks for nearby BT devices. And I was using WiFi. The wireless router was located two rooms away. I have a friend using WiFi as well who was 1 room away from the router. He had to go out of his room to connect to the net via WiFi. I didn't have problems with my WiFi connection at all. Even if I was farther from the router and there were 2 rooms separating me and it.
My friend and I were using the exact same wireless network cards running on the same model laptops running WinXP Pro.
I thought that maybe the reason why I didn't have any problems with WiFi was because of my BT dongle (I have the Belkin 100 meter one) since BT and WiFi runs on the same 2.4Ghz band.
As I said, I really dunno the technical side of things. But this is my personal experience. My friend and I used this setup for a week while we were in Manila on business.
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Posted: 2003-05-28 09:14:08
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BT polling doesn't affect Wifi as much... try doing a full sync with your laptop via BT, while surfing the net via wifi... that's when you'll notice the performance drop in wifi.
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Posted: 2003-05-28 09:29:57
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i use wifi to connect to my lan here at work (and therefore to be posting this...) whilst having my p8 connected to bt on this machine - both work seemlessly together, and even putting a serious queue of 200+kb/s ftp transfers doesn't degrade when doing a sync...
Is it to do with the adapters in question?
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Posted: 2003-05-28 11:22:45
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hmm, bt hasn't effected my wlan @ all.. i have NetGear hardware.
This message was posted from a P800
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Posted: 2003-05-28 11:35:36
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