Data transmission method and system in IOT, IOT equipment and terminal

Abstract

The invention provides a data transmission method and a data transmission system in IOT (Internet of Things), IOT equipment, a terminal and an IOT system. The data transmission method comprises the following steps: judging whether uplink data need to be transmitted and/or a receiving power of a reference signal of equipment with a base station function in a current cell is not greater than a preset receiving power and/or a signal strength is not greater than a preset signal strength; when the judgment result is Yes, transmitting a relay searching signaling to multiple terminals in the current cell; receiving a relay searching signaling feedback transmitted by at least one terminal; determining whether any terminal is taken as a relay terminal according to the relay searching signaling feedback transmitted by any terminal of the at least one terminal; after determining to take any terminal as the relay terminal, transmitting a relay application signaling to the relay terminal. Through the technical solution of the invention, the optimal relay terminal can be selected for the IOT equipment, so as to select an optimal relay path for the IOT equipment.

Description

technical field [0001] The present invention relates to the technical field of the Internet of Things, in particular, to a data transmission method in the Internet of Things, a data transmission system in the Internet of Things, an Internet of Things device, a terminal and an Internet of Things system. Background technique [0002] The Internet of Things (MTC) application is recognized by the industry as the main requirement of 5G networks and the main driving force of 5G networks. For most Internet of Things applications, massive, low-cost, small data packets, low latency, and low power consumption are the key factors. Its important features, for example: in IoT scenarios such as smart meter reading (water meters, electricity meters, gas meters) and smart homes, the number of IoT devices is far greater than the data of smart terminals (such as mobile phones, pads, etc.), so users Very sensitive to cost and power consumption of IoT. In order to reduce the cost and power con...

AI Technical Summary

Problems solved by technology

In this way, although the eNB-based centralized control scheme can effectively meet the low power consumption or low-cost requirements of IoT devices, when the IoT contains a large number of IoT devices, the management complexity of such solutions is very high. In addition, the current There are technical solutions that do not take into account the limitation of relay capabilities, but in fact, the aggregation and forwarding of traffic by relay terminals will involve the traffic contract between the relay terminal and the operator's network, the signaling processing capability and energy consumption of the relay terminal, so , the relay terminal cannot be assumed to act as a relay entity for IoT devices without limitation

For example, in some application scenarios, the relay terminal can only support simultaneous access of 15 IoT devices

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