352results about "Network connections" patented technology

The invention discloses a downlink message control method of a star topology network and a server for executing the control method. The star topology network comprises a server, a plurality of gateways and a plurality of nodes. The nodes communicate with the server through the gateway, and the server allocates a timer for each of the gateways. The control method comprises the following steps: 1, judging whether a node is newly accessed to the star topology network; if so, entering the step 2; Step 2, establish a node-gateway topology relationship to determine a coverage area of each gateway and a coverage area of each node; 3, allocating one of a plurality of downlink frequency points to a newly access node; 4, requesting the gateway to send the message request when the frequency requiredfor the message request to be sent by the gateway is not used by the gateway in the coverage area of the destination node of the message request. The invention can more efficiently solve the problem of co-frequency interference of downlink communication of star topology network.