Channel gain is the signal-to-noise ration of a link [A. Muller '11]
regenerative relay node: The relay mode is regenerative mode, so a relay decodes the received data and then forwards it to a secondary destination. [A. Muller '11]
outage probability, i.e., the probability that the instantaneous mutual information falls below a given information rate R. 
[A. Muller '08] Relay Selection in Dual-Hop Transmission Systems: Selection Strategies and Performance Results
The idea is
1) to have mobile users connect to mesh router through 802.11 and router to access point through 802.11 see the results.
2) the part from mobile user to router is in cellular and the rest is 802.11
3) the part from mobile user to router is in cellular and the rest is on CR band as 802.11 is not guaranteed performance and can be congested