Investigation of the Information Interaction of the Sensor Network End IoT Device and the Hub at the Transport Protocol Level

Abstract

The study examines the process of information transfer between the sensor network end IoT device and the hub at the transport protocol level focused on using the 5G platform. The authors interpreted the researched process as a semi-Markov (focused on the dynamics of the size of the protocol sliding window) process with two nested Markov chains (the first characterizes the current size of the sliding window, and the second, the number of data blocks sent at the current value of this characteristic). As a result, a stationary distribution of the size of the sliding window was obtained both for the resulting semi-Markov process and for nested Markov chains, etc. A recursive approach to the calculation of the mentioned stationary distribution is formalized. This approach is characterized by linear computational complexity. Based on the obtained stationary distribution of the size of the sliding window, a distribution function is formulated that characterizes the bandwidth of the communication channel between the entities specified in the research object. Using the resulting mathematical apparatus, the Window Scale parameter of the TCP Westwood+ protocol was tuned. Testing has shown the superiority of the modified protocol over the basic versions of the BIC TCP, TCP Vegas, TCP NewReno, and TCP Veno protocols in conditions of data transfer between two points in the wireless sensor network environment.

Reliably Controlling Massive Traffic between a Sensor Network End Internet of Things Device Environment and a Hub Using Transmission Control Protocol Mechanisms

“…The modification consisted of the implementation of the scheme for controlling the Window Size parameter proposed by the authors. This research complements the possibilities presented in [7] due to the information technology formulated in Section 2.2, locked to control the <ssthresh> parameter of the SlS mechanism. Figure 11 demonstrates the effect of the introduction of the authors' information technology on an example of modification of the mentioned TCP Westwood+ parameter.…”

“…We completed the experimental phase of this research by proving the positive effect of using the proposed mathematical apparatus. In the previous part of this research, published in [7], the authors compared the modified version of the TCP Westwood+ protocol with analogues such as TCP Westwood+ (without modification), TCP NewReno, TCP Vegas, BIC TCP, and TCP Veno. The object of this research was the process of information interaction between the SNEIoTD and a hub with a communication channel implemented based on the 5G platform.…”

“…We will choose a theoretical basis for an analytical description of the process of information interactions between the SNEIoTD environment and a hub, taking into account the described logic of control. The authors propose a formalization of the researched process based on the queuing theory [7,8] with a controlled input flow. To serve the latter, we assume one device with an infinite queue, a reverse connection, and a deterministic service of duration t m = 1/T cc , where T cc is the actual capacity of the route between the SNEIoTD and a hub.…”

“…This observation underscores the necessity of introducing an additional link to the peripheral server to aggregate substantial traffic from these target sensors. The authors of this article have previously investigated, in [7,8], the issue of the integration of a sensor network end IoT device (SNEIoTD), developed on the reliable and cost-effective Raspberry Pi computing platform, as a viable solution to address this need. The incorporation of such a SNEIoTD aims to diminish the likelihood of information loss within the critical infrastructure of a smart city and enhance the adaptability of controlling massive traffic at the initial stage.…”

Assessment of Communication Resource Allocation by the Transmission Control Protocol for the Target Virtual Connection under Competitive Conditions

“…An obvious direction for further research is the adaptation of the obtained mathematical framework for the case of a group retransmission mode. In doing so, the authors intend to expand upon the results obtained in the works described in [25,26].…”