-2.1 Link Quality
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-The link quality between a directed node pair (A,B) is the probability
-that a packet transmitted by A will be successfully received by B. The
-bidirectional link quality of an undirected node pair (A,B) is the
-product of the link quality of (A,B) and (B,A). This definition
-assumes independent link losses. It also includes the case when
-the link quality of (A,B) and (B,A) are different; this can occur
-due to local interference or noise.
-
-2.2 In-bound Link Quality