مقاله انگلیسی انتخاب الگوریتم حالت CoAP پویای مبنی بر UCB در توزیع اینترنت اشیا
Abstract
Keywords
Introduction
System model and problem formulation
UCB-based dynamic CoAP mode selection algorithm
Simulation results and discussions
Conclusions
Author Contributions
Funding
Declaration of Competing Interest
References
Abstract
Lightweight constrained application protocol (CoAP) has emerged as a common communication protocol for resource-constrained equipment in distribution internet of things (IoT). CoAP introduces two modes for data transmission, i.e., non-confirmed mode for reducing transmission delay and confirmed mode for reducing packet-loss ratio, which can be dynamically selected to satisfy the service requirements. However, there are still some challenges in dynamic CoAP mode selection, including incomplete information and differentiated quality of service (QoS) requirements of distributed IoT services. In this paper, we propose a upper confidence bound (UCB)-based dynamic CoAP mode selection algorithm for data transmission to address these challenges. The simulation results validate that, compared with the fixed mode selection algorithm, the proposed algorithm can flexibly balance the tradeoff between packet-loss ratio and transmission delay as well as satisfy the differentiated QoS in distribution IoT.
Introduction
With the rapid development of internet of things (IoT) technology in the distribution network, the effective information interaction among multifarious equipment is imperative to realize the comprehensive perception, lightweight communication, and reliable operation of distribution services, where communication protocol plays a critical role [1,2].