International Journal of Future Generation Communication and Networking Vol. 12, No. 3 (2019), pp.11-24 http://dx.doi.org/10.33832/ijfgcn.2019.12.3.02 ISSN: 2207-9645 IJFGCN Copyright ⓒ 2019 NADIA WLAN-WIMAX SCHEDULER-BASED HYBRID SENSOR NETWORK FOR DATA AGGREGATION IN SMART GRID ^ Rajashree T. Daryapurkar 1* and R. G. Karandikar 2 1 Electronics & Telecommunication Engineering, Thadomal Shahani Engineering College, Bandra, K. J. Somaiya College of Engineering, Vidyavihar, Mumbai, Mumbai University, India 2 Electronics & Telecommunication Engineering, K. J. Somaiya College of Engineering, Vidyavihar, Mumbai, Mumbai University, India 1 rajashreedaryapurkar@somaiya.edu, 2 rameshkarandikar@somaiya.edu Abstract— Smart meters, sensors and other measuring devices in smart grid networks are expected to generate huge amounts of data continuously. Data generated from these devices must be delivered reliably to utility control centers within specified time for wide-area monitoring and control. Overall grid status would be determined by using this data in a timely manner. Hence reliable and efficient data aggregation is an important process in smart grid communication network. Several network designs have been proposed for data aggregation using various communication technologies. WiMAX and WLAN are the two promising technologies of wireless networks. The combined operation of WiMAX and WLAN can extend transmission range and significantly improve the efficiency of a hybrid network by improving link quality. Hybrid network allows flexible data aggregation to reduce signaling and protocol overheads. We implemented multilevel WLAN WiMAX communication environment for data aggregation in smart grid to support multiple traffic sources/ applications using Network Simulator3 and analyzed the performance of the network in terms of quality of service parameters specified for smart grid applications. Results indicate that proposed network architecture can satisfy the delay requirements of multiple smart grid traffic sources/ applications. Keywords— WLAN, WiMAX, Hybrid Sensor Network, Data aggregation, Smart grid, Network Simulator3 1. INTRODUCTION Communication network is an essential component of smart grid. Data generated by sensors, smart meters and other devices needs to be collected and utilized by various smart grid applications. Data aggregation can be done using either wired or wireless communication technologies. Wireless communication is a main component to connect the digital world by overcoming the set of restriction factors from other communications. Wireless networks give technological advantages especially easy deployment. One of the key motives for choosing a wireless network is improving the communication concreteness of countryside subscribers that holdup after the city subscribers. WLAN technology based on the IEEE 802.11 standard is considered for communication in smart grid due to its low cost and wide use. [1] To make sure the longer connectivity up to several miles using IEEE 802.11 based network, we need a static wireless transportation technique based on IEEE ^ Received: May 7, 2019 Reviewed: August 19, 2019 Accepted: August 28, 2019