B. The Edge between Two Adjacent Nodes
Normally, in wireless communication, two nodes may not be feasible which is based on two reasons. Firstly, the communication distance between two nodes is too great. Secondly, the line-of-sight (l-o-s) adjacency is required between so many wireless links [20]. Therefore, a distance
matrix is defined in here, D=(dij: i, j E V) where dij is the
communication distance between nodei and nodej. The calculation of distance obeys the Euclidean distance formula. And then this distance matrix can be regarded as the cost matrix, C. On the other hand, the local factors are considered in non-Euclidean distances situations. And the dmax denotes the maximum communication distance. The Boolean line-of-sight
(l-o-s) matrix is defined by TI=(rrij:i,jEV),when the line-of-sight
is between nodes i and j, rrij=1andrrij=0 otherwise. The edge viability matrix Z=(Zij: i, jEV) is defined by the equation (2)