LTE network machine communication random access optimal parameter distributed determination method

Abstract

The invention discloses an LTE network machine communication random access optimal parameter distributed determination method. In the method, a node independently determines an optimal back-off parameter according to an access success probability of a previous period of time and a self data packet arrival rate so as to realize access throughput maximization. According to the method, the optimal backoff parameter does not need to be broadcasted by means of a base station, so that the transmission quantity of signaling is greatly reduced, resources are saved, and the method can be applied to a scene of a single application and a scene of priority division in which multiple applications coexist, and is flexible in application and simple.

Description

technical field [0001] The present invention relates to the technical field of Internet of things random access, in particular to a method for distributed determination of optimal parameters for random access of LTE network machine communication. Background technique [0002] Machine communication is the most basic communication method in the Internet of Things era. Its main feature is the seamless data exchange between a large number of device nodes independently and without human interference. The application fields of machine communication include all aspects of life, such as smart home, smart health, smart grid and industrial automation. A very important feature of machine communication is space-constrained high-node-density applications. For example, on a factory production line, the number of IoT nodes that each base station needs to serve may reach thousands or even tens of thousands. When such a large number of nodes needs to be connected randomly When it enters, it...

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Problems solved by technology

[0005] 1) In order to determine the optimal backoff parameters, the base station needs to collect a large amount of data about access requests and nodes, but due to the randomness of machine communication, it is very difficult to collect such data, which may cause the base station to be unable to accurately determine the optimal backoff parameters

[0006] 2) For large-scale machine communication, since the base station needs to exchange information with a large number of nodes through signaling, and the size of the signaling may be larger than the size of the data packet, sending too many signaling will waste a lot of energy and channel resources

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