Therefore, the transmission on wireless link euv may prohibit data transmissions within Ri away from both node u because of RTS and node v because of CTS. For each node u ¸ NM ¾NG, assume that there is an interference disk Du centered at u with radius Ri.
For any wireless transmitting link euv, we denote the unioned area of Du and Dv as Duv and regard any wireless transmitting link exy with its transmitting node x located in the area Duv as the interference link of euv.
In particular, we denote Inter(euv) º E as the set of wireless links that interfere with euv. For the sake of technical uniformity, we have euv ¸ Inter(euv).