Network neighbor discovery device

Abstract

The present invention relates to a device for discovering network neighbors, which is used for mobile terminals, including: an active discovery module, which is used to send wake-up signals and discovery messages, and accept response messages sent by passive sending modules of other discovery devices, wherein the discovery information contains a or multiple characteristic data; the passive discovery module is used to monitor the wake-up signal and discovery message sent by the active discovery module of other discovery devices, and send to the active discovery module when the discovery message contains at least one characteristic data as preset characteristic data A reply message; a mode selection module, connected to the active discovery module and the passive discovery module respectively, for selecting the active discovery module or the passive discovery module to work. Compared with the prior art, the present invention has the advantages of low power consumption, neighbor discovery based on common interests, and the like.

Description

technical field [0001] The invention relates to LBS applications, in particular to a device for discovering network neighbors. Background technique [0002] Neighbor discovery is a fundamental part of building and maintaining a wireless network. The early neighbor discovery protocol was mainly based on the symmetric periodic (active / sleep) mechanism. Through the symmetric periodic active and sleep mechanism, nodes can save their own energy consumption while discovering neighbor nodes. The symmetric periodic mechanism (for example: S-MAC proposed by YeW et al. in "Anenergy-efficient MAC protocol for wireless sensor networks", and B-MAC proposed by Polastre J et al. in "Versatile low power media access for wireless sensor networks") is a node that uses GPS signals or synchronization packets to enable nodes to have a synchronous Active / sleep mechanism, but this method needs to consume a lot of energy in node synchronization. [0003] There are two main types of asymmetric nei...

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Problems solved by technology

However, none of the studies separated the roles of nodes, and the lack of social information in the discovery information

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