| 摘要 |
<p>A wireless mesh network and a method operating a wireless mesh network is disclosed. The wireless mesh network comprises: a central node; and a plurality of bidirectional nodes in bidirectional wireless communication with the central node. The central node comprises a transceiver configured to transmit and receive data communications using selected frequency channels of a plurality of frequency channels. The plurality of bidirectional nodes is in bidirectional wireless communication with the central node where each bidirectional node has a respective wireless communication path to the central node that is either a direct path or an indirect path through one or more intermediate bidirectional nodes serving as repeater nodes. Each bidirectional node is characterized by a number of intermediate bidirectional nodes forming a respective wireless communication path to the central node. The central node initiates a first data communication comprising a preamble from the central node to a first bidirectional node of the plurality of bidirectional nodes using a first frequency channel selected from the plurality of frequency channels and sets a receive frequency of the transceiver of the central node to a second frequency channel selected from the plurality of frequency channels. In response to the first bidirectional node receiving the first data communication, the first bidirectional node transmits an acknowledgement message to the central node using the second frequency channel. The central node retransmits the first data communication to the first bidirectional node using the second frequency channel in response to the central node failing to receive the acknowledgement message within a defined time limit.</p> |
