A method for discovering object information in internet of things

Abstract

The invention discloses a method for discovering object information in the internet of things. The invention can realize the discovery of fuzzy objects. On the basis of reserving the advantages of thestructured distributed network management IOT node, which extends the search mode of DHT system in the Internet of Things environment, It can not only search the object by single key value, but alsodiscover the existing node in DHT network by multiple object attributes or object attributes range, and expand the keyword when the object node is discovered, so that the object discovery without knowing the key value of the target object used for hashing operation is achieved.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a method for discovering object information in the Internet of Things. Background technique [0002] With the development of the Internet of Things technology, a large number of objects have been connected to the Internet of Things environment. This puts a lot of pressure on the registration, management, maintenance and discovery of object information in the Internet of Things. In order to enable users to obtain the required object data accurately and quickly, it is necessary to organize and manage object information uniformly, and provide users with corresponding object discovery mechanisms. [0003] At present, the management methods of object nodes in the Internet of Things system can be divided into centralized management and distributed network management. Centralized management is to register the object information in the management center and form a corresp...

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Problems solved by technology

[0004] The above methods all have certain defects: due to the uniqueness of the registration center of the centralized management, there are problems such as poor scalability and prone to single point of failure when processing massive object information in the Internet of Things; unstructured distributed networks in When discovering services, flooding or broadcasting is used to send service requests to all resources in the network. Although this method reduces the overhead of object information maintenance, it increases the network communication overhead in the process of object registration and discovery; using DHT The structured distributed network represented by DHT can reduce the network communication overhead and have better maintainability while having the reliability and scalability of the distributed structure. DHT technology can connect each node in the distributed node network Organized together in an orderly manner, and provide efficient and accurate node management and discovery services, but when DHT discovers objects, it must know the key value of the target object used for hash operations, which cannot meet the needs of vague object discovery

This brings inconvenience to the node discovery process

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