Downlink message control method and server for star topology network

By allocating timers to each gateway in the star topology network and dynamically allocating downlink frequency points, the problem of co-channel interference in the star topology network is solved, the use efficiency of the downlink channel is improved, and the communication efficiency of the system is improved.

CN109067594AActive Publication Date: 2018-12-21HENAN CENTURE INFORMATION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN CENTURE INFORMATION TECHNOLOGY CO LTD
Filing Date
2018-09-06
Publication Date
2018-12-21

AI Technical Summary

⚠Technical Problem

In a star topology network, co-channel interference is caused by overlapping wireless signals between nodes and gateways. The existing serial downlink communication at a single frequency point is inefficient and cannot effectively solve the problem of co-channel interference.

⚗Method used

The server allocates a timer to each gateway, dynamically allocates downlink frequency points by judging the coverage area of ​​the gateway and the coverage area of ​​the node, and requests to send a message request when the frequency is not used by the gateway in the coverage area of ​​the destination node to avoid frequency conflicts. , allowing multiple gateways to use the same frequency at the same time.

🎯Benefits of technology

It improves the usage efficiency of the downlink channel, improves the communication efficiency of the entire system, solves the problem of co-channel interference, and achieves more efficient downlink communication in the star topology network.

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Abstract

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.
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