Slightly scary chart here:
11n stuff that doesn't mention MIMO will probably be limited to single spatial stream, MCS0-7
Most consumer kit does not mention the MCS modes it can do, rather it is often branded:
150Mbit/s (likely MCS0-7)
300Mbit/s (likely MCS0-15)
600Mbit/s (likely MCS0-31)
Based on your best data rates (Mbit/s, link speeds as reported when in room with router)
and from your descriptions of the kit it looks like you are achieving MCS7 or MCS15.
If you can look in your router's
wireless settings for the following for maximum compatibility:
set it to 20MHz
channel or untick
guard interval (GI):
set it to long
(stuff in brackets as the interface might describe it in a different way)
With these settings the expected data rates are 65 or 130
If the Dell card is supposed to be up to 130 you'll see if it can achieve MCS15 but only with a long GI
- also note what the Billion dongle can do while the router is in this mode.
Then change the channel width to 40MHz. If the Dell card stays the same but the Billion dongle gets a higher rate (e.g. 135) you'll know the Billion supports the wide channel setting where the Dell does not.
At this point you could check the Dell card properties (or via Device Manager) to see if the driver exposes any settings relating to GI or channel width..
Then on the router with short GI set, try 20MHz width, followed by the wide channel settings again.
By matching the reported data rates to the chart you should be able to see what combinations are supported.
Data rate is a link speed generally reported as the total in both
directions, rather than the throughput for your transfers which you can expect to be rather less.
, and the links will adapt at lower data rates at lower signal levels.
My stuff about the webcam was a bit misleading. It would only be something to consider if you saw a drop in usable throughput on a USB dongle, just by previewing the webcam (not even being on a video call where you'd expect it to take some network bandwidth anyway).
prompt $P - Invalid drive specification - Abort, Retry, Fail? $G
prlzx on n e w n e t Max ADSL
Edited by prlzx (Sun 24-Jul-11 03:27:24)