| 摘要 |
Method of message acknowledgement and/or data collection from communication devices with packet transmission of messages in wireless mesh networks, intended particularly for telemetry and automation, where each mesh network includes at least one control communication device (C) and a set of slave communication devices (N), and the control communication device (C) searches through the mesh network so that a unique virtual routing number (VRN) for that network, expressing the distance of the slave communication device (N) from the control communication device (C) determined by the number of routings, is assigned to every slave communication device (N) found and stored into its memory, and in the network arranged in this way, control packets of the messages are transmitted from the control communication device (C) and back through directional flooding. In every addressed slave communication device (N) after reception of the initiation message from the control communication device (C), through which the control communication device (C) initiates data collection from slave communication devices (N) that are relatively time-synchronised to the beginning of the initiation frame, a bit or a number of bits are set, which then gradually merge with acknowledgement collective messages received from other addressed slave communication devices (N) during the acknowledgement frame that is time-synchronised to the initiation frame, whereas consequently such merged acknowledgement collective messages are gradually sent by the slave communication devices (N) in the corresponding time slot of that acknowledgement frame from the highest virtual routing number (VRN) towards the control communication device (C) using oriented flooding of the wireless mesh network. |
