The superg168 Diaries
The superg168 Diaries
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My last list of 11g-only assessments mixes the two scenarios by running the streaming script over the Broadcom-based mostly WLAN and the throughput script around the Atheros-centered.
There isn’t plenty of place within the 2.4GHz wi-fi LAN spectrum for your elevated spectrum employed by channel bonding
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Super-G doesn’t Verify to view if 11b or 11g criteria-compliant equipment are in selection prior to using its non-regular approaches
Nitro and Xpress are principally focused on improving the overall throughput of many devices that rely on them in mixed 802.11b / g networks. (You may even see slight throughput enhancement for just one AP / shopper pair, according to drivers, OSes along with other elements.)
Broadcom’s shot in Determine seven, while, shows an entire-power Tremendous-G sign overlapping into drawn-in markings for channels 1 and 11 so you’re sure to see the Tremendous-G signal is basically at entire energy when it 1st overlaps into both equally “non-overlapping” channels.
This take a look at is intended to emulate the Broadcom Comdex demo (other than that it works by using two 802.11g WLANs) and decide the level of interference on a online video stream from a nearby WLAN that’s working as rapidly as it superg168 may possibly go.
Figure nine shows the throughput plot for that exam, which doesn’t truly tell you Substantially. The blip near the close from the exam appears in many tests and is particularly caused by a periodic scan carried out as part of Broadcom’s driver.
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Neither is Tremendous-G’s “quick frames” attribute – which inserts many information packets into an individual knowledge body – since it’s also Portion of the 802.
The timing gave the impression to be 45 seconds of Super-G and 15 seconds of 11g from the NETGEAR BETA dynamic Super-G updates that I made use of. A unique implementation of dynamic Super-G in D-Link Super-G enabled gear employed by Broadcom in its screening confirmed the timing to be one hundred twenty seconds of Tremendous-G and 75 seconds of 11g. So it seems like Atheros, NETGEAR, or each are performing some efficiency tuning.
Atheros’ Channel Bonding engineering isn’t new, as it’s been used for a few years now in Atheros’ 802.11a “Turbo” characteristic. NETGEAR’s 108Mbps Technology overview paper explains that Channel Bonding is effective by making use of two radio channels in a means that they seem as only one, increased-pace channel to both the transmitter and receiver.
As I explained in my Comdex coverage, the small Tale is that Broadcom is asserting that Atheros’ Super-G primarily based items will interfere with neighboring 802.11b and g networks, severely restricting their velocity and, occasionally, shutting them down wholly.
The impact is similar to “multilink” strategies utilized by ISDN and many dialup ISPs, Even though the exact mechanics are diverse.