Directional ad hoc network neighbor discovery method based on cooperation

Abstract

The invention discloses a directional ad hoc network neighbor discovery method based on cooperation, and belongs to the technical field of wireless communication. According to the invention, the method comprises the steps: when a node observes a conflict, determining that a plurality of neighbors exist in a beam range selected by a current time slot, and giving a rewards to the node; utilizing the information of discovered neighbors in the neighbor discovery process to calculate the number of beams where potential neighbors are located, so cooperation among the nodes is realized; enabling each time slot node to randomly select a receiving and transmitting mode, selecting one beam for communication according to beam probability distribution, and updating the probability distribution of the beams according to conflict occurrence conditions and stored potential neighbor information, thereby improving the probability that the beams with conflicts or potential neighbors are selected in the next time slot. The problem that the neighbor discovery efficiency is low due to the fact that information obtained in the neighbor discovery process is not fully utilized although the influence brought by conflicts is considered in an existing method is solved. The method can be applied to military and other fields.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a neighbor discovery method of an ad hoc network. Background technique [0002] Equipping nodes with directional antennas in ad hoc networks will bring advantages such as increasing the spatial multiplexing rate of the network, reducing interference, and reducing the probability of being eavesdropped, but it increases the difficulty of neighbor discovery. Neighbor discovery refers to the process in which a node establishes contact with one-hop neighbors without knowing which nodes are adjacent to itself and the locations of these nodes. It is an important step in networking. Due to the narrow beam width of the directional antenna, nodes equipped with directional antennas need to meet two conditions if they want to find each other, one is that the beams of the nodes are aligned with each other, and the other is that the nodes are in different working mod...

AI Technical Summary

Problems solved by technology

Although the existing methods consider the impact of conflicts, they do not make full use of some information obtained from the neighbor discovery process and ignore the cooperation with discovered neighbor nodes, resulting in low neighbor discovery efficiency.

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