PACKET ERROR RATE ENHANCEMENT OF SMART CITY IOT NETWORKS VIA PEER-ASSISTED RETRANSMISSION

Nyan Farooq  Ezzulddin; Hanan Hameed  Ismael; Abdulrahman Ikram  Siddiq; Sahar Ali  Hussain

doi:10.30572/2018/KJE/170227

Authors

Nyan Farooq Ezzulddin Electronic and Control Techniques Engineering, Technical Engineering College of Kirkuk, Northern Technical University, Iraq
Hanan Hameed Ismael Electronic and Control Techniques Engineering, Technical Engineering College of Kirkuk, Northern Technical University, Iraq
Abdulrahman Ikram Siddiq Electronic and Control Techniques Engineering, Technical Engineering College of Kirkuk, Northern Technical University, Iraq
Sahar Ali Hussain Electronic and Control Techniques Engineering, Technical Engineering College of Kirkuk, Northern Technical University, Iraq

DOI:

https://doi.org/10.30572/2018/KJE/170227

Keywords:

Peer Assistance (PA) Scheme, Packet Error Rate (PER) Improvement, Internet of Things (IoT), Smart Cities, Latency, Quality of Service (QoS)

Abstract

Internet of Things (IoT) is rapidly expanding in smart city usage in applications such as smart traffic systems, power management, ecological monitoring, security in cities, and some more vital services. Quality of connectivity and response time have significant effects on how well these systems function. It is thus the crucial factor with respect to their functioning performance. The emerging requirement is then for IoT technologies with enhanced connectivity efficiency and data-loss minimization capabilities. To reduce Packet Error Rate (PER) higher Quality of Service (QoS) levels are used but at the expanse of imposing more load on the broker which should serve multiple publishers and subscribers. In this paper, it is proposed to improve the PER at a target subscriber by the assistance of a peer neighbor subscriber. The conducted tests show the capability of the proposed Peer-Assistance (PA) scheme to enhance PER up to 65% with respect to conventional QoS schemes tested under the same conditions. Although, this enhancement is at the expense of an increase in system latency, it provides a useful trade-off enabling design customization to suit the requirements of the specific application. Moreover, the proposed PA scheme introduces a mechanism that redistributes the retransmission load from the broker to neighboring subscribers, thereby enhancing the broker's availability to serve its clients

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