Directional ad hoc network neighbor discovery method based on cooperation

A neighbor discovery and self-organizing network technology, applied in network topology, network data management, wireless communication, etc., can solve the problems of low efficiency of neighbor discovery, ignoring cooperation, and insufficient utilization, so as to increase the probability of beams and improve performance , the effect of speeding up the neighbor discovery process

Active Publication Date: 2021-09-28
京工科创(北京)信息科技有限公司
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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 ne

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  • Directional ad hoc network neighbor discovery method based on cooperation
  • Directional ad hoc network neighbor discovery method based on cooperation
  • Directional ad hoc network neighbor discovery method based on cooperation

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[0057] The present invention will be described in detail below with reference to the drawings and embodiments. At the same time, the technical problems and beneficial effects solved by the technical solution of the present invention are also described. It should be pointed out that the described embodiments are only intended to facilitate the understanding of the present invention, and have no limiting effect on it.

[0058] In order to verify the feasibility of the method of the present invention, the method of the present invention is applied to the actual scene of the ad hoc network in the space-based ad hoc network. The nodes in the network are unmanned aerial vehicles, and each node is equipped with a beam switching directional antenna. The radiation range of the antenna is The same is 500m. The network range is a square area of ​​1km×1km. All nodes start neighbor discovery synchronously, and during the neighbor discovery process, the network topology does not change, and...

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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...

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Application Information

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IPC IPC(8): H04W8/00H04W84/18
CPCH04W8/005H04W84/18
Inventor 高建银王诗力胡东方李倩王锐安瑞琪
Owner 京工科创(北京)信息科技有限公司
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