A method for collocated nodes communicating over a first interface to agree on
a conflict-free transmission schedule among themselves, which they can then use
to collaborate with neighbors accessed through a second interface, for example
through wireless links in order to obtain collision-free transfers of unicast,
multicast and broadcast packets over wireless channels, and channel access delay
guarantees. The collocated nodes behave as a single virtual node for the purpose
of establishing a consistent transmission schedule throughout the nodes of a multihop
wireless network.