1. A computer-implemented method in a first node for establishing a connection with a backbone in a network, comprising: determining default values for a ranking of the first node, the ranking comprising: a first ranking part reflecting an association with a first part of the backbone; and a second ranking part reflecting a relationship to one or more nodes in a first subnetwork of the network; receiving ranking information from a peer node, the ranking information including a ranking for the peer node, the ranking for the peer node including: a first ranking part reflecting an association with a second part of the backbone; and a second ranking part reflecting a relationship to one or more nodes in a second subnetwork of the network; determining, based on the ranking information, that the first node is to connect, via Line-of-Sight (LOS) communication, with the peer node; assigning a first value to the first node's first ranking part, the first value the same value as the peer node's first ranking part; and assigning a second value to the first node's second ranking part, the second value generated from an arithmetic operation applied to the peer node's second ranking part.