Neighbor discovery method based on node cooperation

Abstract

The invention discloses a neighbor discovery method based on node cooperation. The invention designs a neighbor discovery method based on node cooperation according to the characteristics of a low-duty-ratio wireless sensor network. According to the method, nodes within a specific distance threshold value are regarded as a cooperative group based on the receiving intensity of signals, and awakening time slots of all the nodes in the group are replanned, so that the nodes in the group are jointly responsible for an awakening task of an awakening time table of the cooperative group. Meanwhile, the optimal group scale capable of maximizing the energy efficiency of the cooperative group is researched, factors which cannot be ignored on the energy efficiency of the cooperative group are quantitatively analyzed, and the optimal values of all parameters which enable the energy efficiency of the cooperative group to be optimal are derived. Correspondingly, a set of cooperative group managementmechanism is designed in the method, and the whole life cycle of the cooperative group comprises group establishment, group information sharing, group cooperation and group dissociation. According tothe neighbor discovery method, the integrity of the node awakening time table is ensured, and meanwhile, the awakening time slot with low energy efficiency can be effectively reduced.

Description

[0001] 1. Technical field [0002] The invention relates to the technical field of wireless sensor networks, in particular to node collaboration in the sensor network, and in particular to a neighbor discovery method based on node collaboration. [0003] 2. Background technology [0004] Wireless Sensor Networks (WSNs) technology is closely related to Internet of Things (IoT) technology. It is one of the technical supports of IoT and has a wide range of applications. WSNs transmit physical information collected from a scene by a set of spatially dispersed dedicated sensors through wireless links, these sensors are connected by a self-configuring, infrastructure-free wireless network, data is forwarded through multiple nodes, and the data is transmitted through a gateway. Transmitted to other networks, it can cooperatively perceive, collect and process the information of sensing objects in the network coverage area, and realize data collection and quantification, processing fusi...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of unnecessary energy waste caused by redundant overlapping of wake-up time slots in the same time dimension of the existing node-cooperative-based neighbor discovery algorithm, excessive loss of wake-up time slots reduces the neighbor discovery rate and the optimum energy efficiency of the cooperation group Optimum group size for more difficult problems

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