A Neighbor Node Discovery Method Based on the Combination of Active Detection and Passive Listening

Abstract

The invention discloses a neighbor node discovering method based on combination of active detecting and passive monitoring, which mainly solves a problem that accurate information of a neighbor node cannot be acquired because received data frames cannot be parsed correctly in passive monitoring, and solves problems of increased interference and aggravated energy consumption, which are caused by high transmission power, between network nodes. Implementation of the method comprises classification for passively monitored neighbor nodes, adjustment for the transmission power of an active detecting node and replying of the neighbor nodes. Based on the neighbor node discovering method disclosed by the invention, the number of discovered neighbor nodes and the neighbor node discovering speed are improved, and the node energy consumption is reduced at the same time.

Description

technical field [0001] The invention relates to the technical field of wireless communication networks, in particular to a neighbor node discovery method in a wireless opportunistic network that combines active detection based on physical layer power control and passive monitoring of a media access control layer across layers. Background technique [0002] Opportunistic networks are also known as sparse Ad Hoc networks, intermittent networks (Intermittently Connected Networks) or delay-tolerant networks (Delay / Disruption Tolerated Networks). It is a time-delay and split-tolerant self-organizing network that does not require a complete path between the source node and the destination node, and uses the encounter opportunities brought about by node movement to realize network communication. In the real world, due to the limitations of the environment, application characteristics, cost and other factors, it is impossible to establish a fully connected network in many applicatio...

AI Technical Summary

Problems solved by technology

Although this method takes into account the energy efficiency of nodes, it does not take into account the neighbor nodes that cannot be correctly resolved in the MAC layer, so the number of neighbor nodes found has not been greatly improved.

Images