| 主权项 |
1. A system for controlling data packet transmission in a wireless mesh network, comprising:
at least one collector node; and a plurality of nodes; wherein a node and/or the at least one collector node receiving an uplink data packet addressed to the at least one collector node is configured to store at least a sender node information of a sender node that initially had transmitted the uplink data packet and a transmitting node information of a transmitting node that had received the uplink data packet transmitted from the sender node or from an intermediary node for transmitting the uplink data packet to the node and/or the at least one collector node as a reverse-route information for a predetermined time, wherein the predetermined time, for which the reverse route information is stored at the sender node, depends on a distance of the sender node to the at least one collector node, and wherein the reverse-route information of each node of the plurality of nodes and the at least one collector node are devoid of information related to the intermediary node, wherein the at least one collector node is adapted to broadcast and/or multicast a trigger message to one or more nodes, indicating that data is available at the at least one collector node, wherein the trigger message is split into several sub-batches, each sub-batch comprising different node addresses, and wherein the sub-batches are processed sequentially, wherein the multicast trigger message comprises a time interval and request slots, indicating to the destination nodes the time period in which data requests are transmitted to the at least one collector node, and wherein a node having received the trigger message is adapted to randomly select a time slot within a time interval specified in the trigger message for sending a data request to the at least one collector node. |
