Note, though, that the vast majority of loss originates from a person glitch during the stream that occurs shortly once the throughput script begins operating.
An excellent-G wi-fi LAN functioning at whole pace will interfere having an 11g WLAN also working at total velocity. Critical throughput reduction inside the 11g WLAN can happen as much as thirty feet absent and substantial throughput reduction should be observed close to fifty ft
Determine 10 provides a little bit more insight because it displays the information shed by Every single stream, which can be the distinction between the Bytes despatched and Bytes acquired.
Considering the fact that on the list of two WLANs had to maneuver to test at various distances, and since I have only two notebooks, I utilised them both equally inside the Tremendous-G fifty percent of my examination rig to help make factors uncomplicated to move all around.
Super-G vs. Broadcom 11g tests consisted of taking the prior scenarios and repeating them with the Atheros-centered NETGEAR pair now set to Tremendous-G method.
A nearby Tremendous-G WLAN functioning a 2Mbps video stream will most likely not lead to substantial interference to an 11g WLAN that’s also streaming a video
I attempted equally and found minimal difference when managing the streaming and throughput scripts, so opted to utilize the more recent dynamic Tremendous-G for my screening.
The designs with the signals look unique from These proven in Determine three for the reason that filtering is utilized from the WLAN products to shape the superg168 sign. But you can Plainly see that electric power from Each individual channel’s sign overlaps into one another’s.
Chariot doesn’t incorporate MPEG streams amid its examination scripts. So I had for making do using the NetMtgv.scr script, which emulates a NetMeeting 2.1 Online video stream. I utilised UDP as the protocol and established the stream fee to 2.048Mbps.
When Tremendous-G drops back to normal 11g close to the conclude with the run, it is possible to see throughput come back around 2Mbps and Knowledge Decline fall to zero, as we observed while in the 11g-only tests.
During this NTK, I’ll initial explain what Tremendous-G is then check out the key source of Broadcom’s worry.
Atheros’ Channel Bonding technology isn’t new, since it’s been useful for a number of years now in Atheros’ 802.11a “Turbo” feature. NETGEAR’s 108Mbps Technological know-how overview paper clarifies that Channel Bonding operates by using two radio channels in a method that they appear as a single, higher-velocity channel to each the transmitter and receiver.
Broadcom says the periodic glitch is due to a scan accomplished by WinXP’s “Zero Configuration” utility, and never by Broadcom’s driver.
The outcomes display 0.041% of knowledge was missing within the Broadcom-based stream and none in the Atheros-based mostly stream. This isn’t definitely quite substantial, especially due to the fact the most important disturbance is due the glitch because of the Broadcom driver.