The transmission range and the interference range are Rt and Ri respectively.
Typically, Ri is ƒÀ times of Rt where ƒÀ . 1.
For any two nodes u ¸ NM ¾NG and v ¸ NM, there are wireless links euv, evu ¸ E if and only if u is within vfs transmission range and vice versa. All wireless nodes are assumed to be stationary.