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The TDMA system does indeed work by dividing up timeslots/data access slots for all clients attached to that AP (that are AirMax enabled). At the very basic operatoin, the timeslots are divided equally. However, there is a lot that can affect the amount of time slots given to a specific client. If all clients are equal each will get an equal timeslot. You mentioned if you have 6Mbps at an AP and 7 clients, that 6Mbps of data would be divided up equally among the clients. Now this is just a simple generalization, but for an overview can suffice.
There are also a few special mechanisms that we have in place that makes the TDMA system far exceed the capabilities of standard 802.11 CSMA based communications:
- AirMax eliminates the issues of hidden node. This is a huge benefit and allows the scaling of many more clients per access point then when using 802.11 CSMA. This allows us to achieve upwards of 120 clients per AP without sacraficing AP performance.
- AirMax gives you an advantage in noise RF enviroments. This is achieved via the elimination of the CSMA mechanism. In the same way that AirMax eliminates hidden node, it also excels at fighting interference. The CSMA mechanism will cause a random back off when it detect that the "medium" (in this case the air) is busy. It doesn matter if its your devies or somene elses deviecs that are transmitting, if an 802.11 CSMA device detects this it will back off and wait to transmit.
With AirMax turned on, this is eliminated. The AP gives every client a specific slot to transmit on, and the client will transmit regardless weather or not another system is transmitting. This makes it more robust in noisy enviroments.
- Another proprietary benefit of AirMax is our TDMA VOIP/VideoQoS intelligent scheduler. This algorithm automatically detects VOIP and Video packets and gives them priorty. This is done automatically to provide the best possible VOIP and vidoe services over the AirMax AP's.
- Another proprietary benefit is AirMax QOS. In those cases where you have mediocre client connected to the AirMax AP, this device can slow the entire system down. This weak client needs more time to transmit the same amount of data as a client with good signal, and can slow down the AP. We implemented a dual TDMA system that allows you to set these weaker clients to lower priority at the AP, effectivly eliminating the issues associated with having a severly weak signal client connected to the AP.