in the $\mathbf{anfl}$ data structure of $N_2$). One way to summarize this functionality is that in this way a relay can obtain the information for channels that it cannot directly estimate ($\tilde{h}_8$ and $\tilde{h}_3$ here).

This adaptive flow monitoring technique with the $\mathbf{anfl}$ data structure, increases the channel information at the relay only when it could be needed. Also it is important to note that from an implementation perspective, when a tagged node experiences at the MAC layer a diss-association from another node, then the channel estimates that involve the disconnected node, are removed from the local memory and also the entries in the $\mathbf{anfl}$ data structure that involve this node.

Rate Estimation of Cooperative and Interfering Transmissions {#sec:rate-estimation}
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The next question is as follows: How does the system select which secondary/interfering transmission is optimal? Naturally, a secondary transmission should be selected to interfere *iff* the ANC-OL mode will increase the sum-rate not only when compared to the direct transmission, but also when compared to a COOP transmission that employs amplify-and-forward (AF) [@laneman04; @coopmac]. To do so it must be evaluated analytically, and more importantly during run-time, which type of cooperation is the most efficient. The only issue is 