Method and system for traceability of WSN data transmission path based on orthogonal identification

Abstract

The invention discloses a WSN data transmission path traceability method and system based on orthogonal identification, which is divided into two stages of traceability information labeling and transmission path reconstruction: the stage of traceability information labeling includes: allocating all sensor nodes in the wireless sensor network Orthogonal identification, selection of a carrier protocol for carrying traceability information, and realization of superposition and multiplexing of traceability information in data packets by routing nodes; the transmission path reconstruction stage includes: reading traceability data fields of data packets, extracting and participating in forwarding The identification of the sensor node of the current data packet and its forwarding order, and restore the transmission path of the data packet according to the obtained order. The invention integrates the routing sequence information of the data packets in the wireless sensor network into the traceability information based on orthogonal superposition, and realizes the accurate traceability of the data transmission path of the wireless sensor network with limited space cost.

Description

technical field [0001] The invention relates to a method for tracing the source of a wireless sensor network data transmission path, in particular to a method and system for tracing the source of a wireless sensor network data transmission path based on an orthogonal mark. Background technique [0002] Wireless Sensor Networks (WSN) is an ad hoc communication system composed of sensor nodes that are deployed in the monitoring area and have data acquisition, communication, storage and processing capabilities. Each sensor is a node of the network. It is used for environment perception and transmits the perceived data to the base station in a multi-hop manner. The traceability of the data transmission path of the wireless sensor network refers to the traceability of the data received by the base station, and restores all the routing nodes and their forwarding sequence that the data passes through during the transmission process. [0003] In order to realize the traceability of...

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Problems solved by technology

The advantage of using this method is that it does not occupy the storage space of the nodes, and each node only needs to add its own identification information to the data packet, so it is easy to implement, but its disadvantage is that the amount of traceability data is proportional to the number of routing nodes, There is no upper limit to the amount of traceable data in the data packet, and the continuous growth of the data packet length will also lead to a large amount of data fragmentation, which will increase routing conflicts, resulting in an increase in data communication costs and a decrease in the overall communication efficiency of WSN

This method can effectively solve the problem of no upper limit of traceability data, and it is simple to implement. However, the traceability data of this method does not contain forwarding sequence information, so only which nodes participated in the forwarding can be known from the traceability data, and the actual status of these nodes cannot be known. Forwarding order, for this reason, a wireless sensor network data traceability method based on a pseudo-random sequence. Chinese invention patent, application number: 201510646810.9 uses the ICMP protocol to reconstruct the transmission path, but the ICMP protocol gives an approximate traceability result. There is a certain probability of error between the reconstructed transmission path and the actual transmission path

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