Realization of large-scale monitoring sensor network raw regrouping and periodic transmission grouping method

Abstract

The invention discloses a large-scale monitoring sensor network RAW regrouping implementation and a periodic transmission grouping method, which specifically includes two parts, (1) the online continuous connection RAW regrouping realization based on the Gold sequence; in the association stage between nodes and APs, The AP assigns a separate Gold sequence to each associated node, and the AP transmits RAW packet information through the composite sequence in the beacon, avoiding the overhead and reassociation time caused by AID redistribution, and realizing the separation of nodes with discontinuous AIDs. into the same RAW group; (2) RAW grouping; for the periodic data of large-scale security monitoring sensor networks, a RAW regrouping algorithm that reduces the probability of collision is designed, and the problem between groups existing in the original RAW mechanism is solved by three groupings. To solve the load imbalance problem, realize the RAW grouping of the periodic data of the large-scale security monitoring sensor network, reduce the collision caused by random grouping, and improve the performance of the 802.11ah network.

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] Although the wireless monitoring sensor network in industrial production has begun to take shape, there are still many defects in wireless communication technology. For example, the commonly used traditional WiFi technology can provide a higher transmission rate, but because it works in a higher frequency band, the penetration ability is poor, the transmission distance in a complex environment is short, the number of nodes allowed to be accessed is small, and it can The consumption is relatively high. Compared with traditional WiFi, the number of devices that can be accessed by Zigbee technology has increased significantly, and has the advantages of low complexity, low energy consumption, and low cost. However, its co...

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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