VoWLAN basic Q & A-Question 4 "Three kill"

What problems do you think will happen when you execute the "Three kill" sound, image, and data functions on one machine at the same time?

This is a cool idea. When talking about multi-access point allocation, the difficulty is that 802.11 is designed for single-launch zone operations. Conversion from VC to BSSID, and then converting each BSSID to different channels in turn is a good way. This is similar to how sound signals are executed on early DSL.

Another thing I heard is that the only Wi-Fi chip that can provide three channels for simultaneous operation is Engim, And the other 802.11 chips cannot operate three channels at the same time. Therefore, the access points that can be used for "Three kill" can only be customized by users.

By the way, executing 802.11e may be more helpful to your ideas. It is too wasteful for a single access point.

As there is mutual interference between channels and collaboration between base launch zones is also required, it is difficult to implement VoIP in a multi-launch zone environment similar to a large enterprise or a large conference center. Collaboration in the base launch zone is a complex issue. It requires the operating system in the hotspot zone to make decisions synchronously and quickly. I am not talking about interference from external sources such as Bluetooth or wireless phones. Instead, it is said that so many access points work together to provide continuous coverage support for wireless VoIP, they will interfere with the access points connected to the client. This is because there is no limit on wireless communication, and the distance between the channels that can improve the noise in transmission is far greater than the distance between high-speed reception. For example, the 802.11a transmission of 54 Mbps is generally limited to 90 feet away from the Access Point, however, the energy transmitted from the same transmission will not disappear within 90 feet, and it will continue until at least 200 feet ). If you have 100 access points running 802.11a/B/g in your office building, it is impossible to make the speech coverage area uninterrupted, even if there is a replaceable channel, some access points overlap signals on the same channel. Therefore, the network is actually self-interference. To solve this problem, a special access point is required. Such access points can be used to adjust the transmission signal with overlapping access points, so as to ensure that the transmission signal is not mixed.

The "Three kill" related to home applications should end with a saying that I can feel the wireless network of my neighbors. So if every household uses three channels, I guess it is 802.11b/g), it basically means that you are surrounded by the "Three kill" signal, there are more interesting things brought about by mutual interference between channels...

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