RRM (Radio Resource Management) deep dive

I has several questions about details on RRM mechanism, so I uploaded 5 videos on Youtube about RRM:
- The first video (http://www.youtube.com/watch?v=gwCxVwmHnRw) describes RRM principles
- The second video (http://www.youtube.com/watch?v=XhmnXeeLQBc) goes deeper into RRM and provides useful information if you are to take a Cisco exam on Wireless related topics! :-)
- The third video (http://www.youtube.com/watch?v=3EnvhxjzEWU) details how RRM controls the AP channel assignment with DCA (Dynamic Channel Assignment).
- The fourth video (http://www.youtube.com/watch?v=32YWzuXTg5M) explains how RRM dynamically reduces AP power with TPC (Transmit Power Control)
- The fifth video (http://www.youtube.com/watch?v=yot63RsKOCg) explains how the Radio Coverage Detection Algorithm works.
Each video is only a few minutes long... hope they are usuful!

WCS Planning mode and VoWLAN

What is a good VoWLAN design?
-67 dBm RSSI at the edge of the cell, aiming for less than 1% packet loss to get a MOS (with G711 codec) of 4.1 or better. Typically speed in the cell would be set to 24 Mbps or more (lower speed disabled) for 802.11a or 802.11g, and 11 Mbps or more for 802.11b/g. This last figure makes that some people would say "12 Mbps or more for 802.11g", to have 802.11g value close to the 802.11b/g value.
The main point is that if RSSI is good at the edge of the cell, and if SNR is good at that point (25 dB or more), then call quality would be good.

Now take the WCS, in planning mode, and ask it for Voice service... the network will be designed with the following predictive RSSI at the edge of the cell:
- Aggressive = Minimum [-78 dBm (802.11a/b/g)]
- Safe = Medium [-75 dBm (802.11a/b/g)]
- Very Safe = Maximum [(-72 dBm (802.11a/b/g)]
- 7920_enabled = [(-72 dBm (802.11a); -67 dBm (802.11b/g)]
All these values are way below all Cisco recommendations... you'll need to manually tune the Planning Mode result to get an acceptable predictive coverage...