Network neighbor discovery device

Abstract

The invention relates to a network neighbor discovery device which is applied to a mobile terminal. The network neighbor discovery device comprises an active discovery module which is used for transmitting an awakening signal and a discovery message and receiving a response message which is transmitted by the passive transmitting module of other discovery devices, wherein the discovery message includes one or multiple feature data; a passive discovery module which is used for monitoring the awakening signal and the discovery message which are transmitted by the active discovery module of other discovery devices and transmitting the response message to the active discovery module when the discovery message includes at least one feature data which is preset feature data; and a mode selection module which is respectively connected with the active discovery module and the passive discovery module and used for selecting the active discovery module or the passive discovery module for working. Compared with the devices in the prior art, the network neighbor discovery device has advantages that power consumption is low and neighbor discovery is based on common interests.

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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