A differentiated back-off method based on user classification in the 5G big connection Internet of Things

Abstract

Disclosed is a user classification-based differential backoff method in 5G big connection Internet of Things, comprising the following steps: 1) determining the type of coverage to which a user terminal belongs according to channel attenuation information of the user terminal; 2) a base station sending, to the user terminal, the type of coverage to which the user terminal belongs by means of a downlink control channel; 3) the user terminal initiating a random access request, the user terminal generating a backoff time if the user terminal fails to access, and the user terminal re-initiating a random access request after the backoff time expires, the user classification-based differential backoff in 5G big connection Internet of Things being completed when the user terminal has accessed; otherwise proceeding to step 4); 4) when the number of random access requests initiated by the user terminal is less than a preset maximum backoff number, proceeding to step 3); otherwise, waiting till the next service period to proceed to step 3). The method can effectively improve system capacity, and reduce the probability of unsuccessful system access.

Description

technical field [0001] The invention belongs to the technical field of 5G massive connection Internet of Things communication, and specifically relates to a differentiated backoff method based on user classification in the 5G large connection Internet of Things. Background technique [0002] Narrow Band-Internet of Things (Narrow Band-Internet of Things, 5G large connection Internet of Things) is defined as a communication system that can transmit data between devices without human intervention. It is estimated that by 2020, tens of billions of IoT devices will be deployed and operated. With the deployment of 4G LTE network and the acceleration of 5G network deployment, IoT devices will provide better services in many fields. [0003] The service characteristics of IoT networks are very different from traditional cellular broadband services. IoT is characterized by low cost, low complexity, extended coverage, and low power consumption. This is because the IoT network needs...

AI Technical Summary

Problems solved by technology

The 5G large-scale Internet of Things network and equipment are less complex, so the data storage and processing capabilities of the equipment are weak, and the protocol stack and air interface of the network need to be redesigned

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