Topology synthesis in integrated design of wireless communication networks is considered. An iterative method has been developed for placing base stations of a broadband network along extended transportation routes. The problem of base station placement is formulated as an extremal problem on a finite set in the form of a special combinatorial model. An algorithm of the branch and bound method (BBM) has been developed to solve this problem. This algorithm serves as the basis for finding a sequence of best variants for the placement of base stations. Numerical calculations confirming the efficiency of the proposed algorithm are described.