5 results about "Protocol data unit" patented technology

The invention provides a fast convergence method for flooding networking. The method comprises the steps that 1 a concentrator constructs the network layer protocol data unit of a command packet and sends a data acquisition command to a target node; 2 if the node interpretation destination address which receives the command packet is not itself, whether the command packet is forwarded or discarded is determined according to various processing mechanisms; 3 if the node interpretation destination address which receives the command packet is itself, whether the command packet is processed according to a certain processing mechanism; 4 the node which receives the response packet decides whether to forward or discard the response package according to various processing mechanisms; and 5 the concentrator receives the response packet and decides whether to process the response package according to a certain processing mechanism. According to the invention, the communication success rate between the concentrator and each node can be greatly increased; the communication reliability is greatly improved; and the workload of network maintenance is minimized.

In the present disclosure, a transmitting device transmits a first message comprising i) a first random access preamble with a first random access preamble identifier (RAPID) and ii) a first uplink payload; receives a random access response (RAR) medium access control (MAC) protocol data unit (PDU) including i) a first field set to represent presence of one or more RAPIDs and ii) the one or more RAPIDs; determines whether both of the first RAP and the first payload is successfully transmitted, based on whether the one or more RAPIDs include the first RAPID; and monitors a second message related to the first message based on determining that both of the first RAP and the first payload is successfully transmitted.