A method and system are described for providing a wireless sensor network between a main node and a plurality of nodes, the nodes associate with sensors. The method and system define communications channels over which the main node communicates with the nodes based on a channel hopping scheme pattern, and define at least one transfer channel that is dedicated to carrying transfer frames that are broadcast by the main node. The method and system configure non-attached nodes that are not attached to the network, to enter a connection session by tuning to the transfer channel to listen for a transfer message. The transfer message indicates a next communications channel. The method tunes the non-attached nodes to the next communications channel, listens for a beacon frame, and utilizes the beacon frame as a timing reference to enable the non-attached nodes to attach to the network.