Blake Krone writes on his blog about WFD5 presenter Meru Networks:
Meru has an architecture called MobileFLEX. This is an all encompassing solution at each of the following layers: Access, Control, Management, Policy, and Solutions. An interesting part of this MobileFLEX is their channel usage. While they support multi-channel traditional networks they also support a concept called single channel architecture and virtual channel layering. One of the aspects they mention about channel layering is having an SSID per channel essentially which limits the number of networks being broadcasted on a single channel.
Read more: Reaching the RF Summit