Concurrent data transmission method between Internet of Things sensing devices

Abstract

The invention relates to a concurrent data transmission control method between Internet of Things sensing devices, which is characterized by comprising the following steps of: 1, inquiring whether a network channel is idle or not, judging whether the current network environment allows the Internet of Things sensing devices to join in concurrent data transmission or not, and if so, entering a step2; 2, the Internet of Things sensing device sending a data group message; 3, after m messages of one data set are connected and sent, waiting for a second preset time, and waiting for the data set toconfirm arrival of the messages; 4, judging whether the number of the sent data sets is greater than n or not, and if so, entering the step 5; if not, adding 1 to the number of the data sets, and returning to the step 2; and step 5, monitoring a network channel, and sending a time control message after the backoff time. Compared with the prior art, the method has the advantages that the capabilityof concurrent data transmission between the sensing devices of the Internet of Things can be improved without establishing a channel interference model at extra overhead, and the data transmission performance of the whole Internet of Things system is improved.

Description

technical field [0001] The invention relates to the field of communication and computing of the Internet of Things, in particular to a method for concurrent data transmission between Internet of Things sensing devices. Background technique [0002] The Internet of Things is called the third wave of the information industry after the Internet and the mobile Internet. With the commercialization of 5G communication technology, the Internet of Things will usher in new development opportunities. In the era of the Internet of Things, we enable each item to have information perception, processing and transmission capabilities through digital and networking technologies, and can be connected to the Internet through a wired network or wireless network, so that item information in the physical world and Personal information in human society is integrated with various business information and media information in cyberspace, and a rich Internet of Things application is established thro...

AI Technical Summary

Problems solved by technology

However, since the allocation of time slots does not consider the traffic demand of each sensing device, it may cause the allocated time slots to be underutilized, or the allocated time slots may not be enough, thus affecting the transmission performance of the entire IoT system; (2) Traffic-aware low-duty-cycle MAC protocols, such as X-MAC, RI-MAC, pTunes, etc., these channel access control protocols are aimed at sensing devices that work in low-power mode (between waking up and sleeping) In the case of switching back and forth), in a network scenario with relatively dense data traffic, it will cause serious data transmission failure and permanent backoff problems, thereby affecting the performance of the entire IoT system; (3) Support concurrent data based on channel interference model Transmission wireless channel access control protocols, such as C-MAC and OPC, they need to actively send network channel detection packets before data transmission to obtain the probability of successful data transmission of each sensing device under different interference levels, so as to establish a channel Interference model, and concurrent data transmission between sensing devices based on the established interference model

Since this type of protocol requires additional overhead (including time and channel resources) to establish a channel interference model, the improvement in the rate of the entire IoT system is very limited.

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