A variable rate transmission system where a packet of variable rate data is transmitted on a traffic channel if the capacity of the traffic channel is greater than or equal to the data rate of the packet. When the rate of the packet of variable rate data exceeds the capacity of the traffic channel, the...http://www.google.de/patents/US7751371?utm_source=gb-gplus-sharePatent US7751371 - Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels
