A method for routing data packets from a source to a destination in a wireless communication network comprising a plurality of nodes, wherein each node is in uplink-downlink association with at least one neighboring node, and wherein each node comprises a registration table identifying all downlink nodes that are associated with the node, the method comprising: sending an Open Stream message from a source node which specifies a destination node; and receiving the Open Stream message at the uplink node of the source node, wherein the uplink node relays the Open Stream message to the destination node if the destination node is registered in the registration table of the uplink node.