Large-scale monitoring sensor network RAW regrouping implementation and periodic transmission grouping method

Abstract

The invention discloses a large-scale monitoring sensor network RAW regrouping realization and periodic transmission grouping method, which specifically comprises two parts: (1) online continuous RAWregrouping is realized based on a Gold sequence; in the association stage of the node and the AP, the AP allocates an independent Gold sequence to each associated node, and the AP transmits RAW packetinformation through a composite sequence in the beacon, thereby avoiding overhead and reassociation time caused by AID reallocation, and realizing the purpose of allocating the nodes with discontinuous AIDs into the same RAW group; (2) RAW grouping; the method aims at periodic data of a large-scale safety monitoring sensor network. The RAW regrouping algorithm capable of reducing the collision probability is designed, the problem of inter-group load imbalance existing in an original RAW mechanism is solved through three times of grouping, RAW grouping is conducted on periodic data of a large-scale safety monitoring sensor network, collision caused by random grouping is reduced, and the 802.11 ah network performance is improved.

Description

technical field [0001] The invention relates to the field of wireless communication protocols, in particular to the realization of large-scale monitoring sensor network RAW regrouping and the periodic transmission grouping method. Background technique [0002] The "Made in China 2025" plan draws a clear route for modern industry and promotes the integration of informatization and industrialization. In this context, it is particularly important to realize the informatization in industrial production and to monitor the safety of the production process. In order to ensure the safe, intelligent, orderly, and efficient operation of industrial production, it is necessary to monitor the production environment, process, and status, such as the concentration of harmful gases in the production environment and the temperature of production equipment. In the industrial safety monitoring system, there are a large number of sensor nodes, which carry the transmission of these sensory data...

AI Technical Summary

Problems solved by technology

The method is divided into two parts. First, the initial grouping dependent on the continuity of the node AID does not consider the load in the group, and the transmission performance of the original grouping scheme is reduced due to emergencies. The present invention provides a Gold sequence-based online The implementation method of continuous RAW regrouping; secondly, in the scenario of periodic data transmission in a large-scale security monitoring sensor network, the present invention provides an RAW grouping method

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