IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _________________________________________________________________________________________ Volume: 03 Special Issue: 07 | May-2014, Available @ http://www.ijret.org 611 ZIGBEE SENSOR NETWORK INTEGRATED WITH 4G FOR IOT APPLICATIONS K. Kalaivani 1 , R. Aravindh 2 , G. Vijayalakshmy 3 1 Student, ECE, Perunthalaivar Kamarajar Institute of Engineering and Technlogy, India 2 Student, ECE, Perunthalaivar Kamarajar Institute of Engineering and Technlogy, India 3 Assistant Professor, Electronics and Communication Engineering, Perunthalaivar Kamarajar Institute of Engineering and Technology, India Abstract Internet of Things (IoT) refers to uniquely identifiable objects and their virtual representations of an Internet like structures. The main goal of the IoT is to make the sense the information of the computing device without the need of human interaction. Zigbee Wireless sensor node is a communication protocol which is used to transmit data over long distances by passing data through the intermediate devices to cover longer distant and provides secure networking. It can be used anywhere at any time. It requires less power to operate and it can be implemented easily with any type of wireless generation. 4G (Fourth Generation) is the next generation of wireless networks and it can provide fast and secure data transfer. Speed of 4G can be achieved by OFDM modulation and it will utilize most of the existing wireless communication infrastructure. World Wide Interoperability for Microwave Access (WiMAX) is wireless technology and it provides wireless data over long distance. WiMAX provides a media access control (MAC) and proposes the full range of security features to secured data exchange. It transmits the data at 70 Mbps. In this paper, Zigbee Wireless sensor nodes real time data transmission integrated with 4G Technology for long distance Secure Communication with high mobility is proposed and analyzed using OPNET. The performance such as delay, data sent, Jitter and end-to-end delay and packet delay variation are simulated. Keywords— WiMAX, 4G, IoT, Zigbee, Wireless, sensor network, voice ----------------------------------------------------------------------***-------------------------------------------------------------------- 1. INTRODUCTION Two different technologies which find a swift and a massive growth at present are Cloud Computing and the next one is In- ternet of Things (IoT). The next era of computing will be out of the present traditional computing, where the computers will be able to access the data without any human interaction on the field. Internet of Things (IoT) represents an integral part of the future internet [1]. IoT can be realized into three paradigms as IP (Internet Protocol) oriented (middleware), things oriented (sensors) and semantic-oriented (knowledge) [2]. Zigbee is the Wireless sensor standard based technology that addresses the unique needs of most remote applications [3]. Zigbee networks provide security using 128 bit symmetric encryption keys and uses Direct Sequence Spread Spectrum (DSSS) [4]. It supports for multiple network topologies such as point-to-point, point-to- multipoint and mesh networks [5]. 4G is a technology which supports high quality audio and video streaming end to end IP [6]. 4G system targets peak data rates of approximately 100 Mpbs for high mobility and 1Gbps for low mobility services. It supports bandwidth in a range of 5 to 20 MHz 4G supports both the TDD and FDD duplexing [7]. It uses orthogonal frequency division multiplexing (OFDM) access for LTE DL, WiMAX UL, WiMAX DL and single carrier frequency division multiple (SC-FDMA) access for LTE UL [8]. WiMAX is an IEEE 802.16 standard which is highly efficient and is suitable for long range applications. WiMAX base station can offer greater wireless coverage of about 5 miles in a line of sight transmis- sion within the bandwidth of up to 70 Mbps [9]. Zigbee module is a wireless sensor network (WSN) platform which is based on the IEEE 802.15.4, 2.4 GHz standard [10]. Zigbee uses two types of commands for communication- (i) AT commands and (ii) API commands. Zigbee can be either used as a coordinator or a router or an end device. It uses serial communication pro- tocol for the transfer of data and operates at a range of 3.3V DC [11]. The coordinator organizes the network and maintains the routing and it responsible for initializing, maintaining and con- trolling the network. Router communicates to the coordinators, to other routers and to end devices. It forms network backbone to the end device can communicate to the router and coordina- tor but not with another end device [12]. PAN is the combina- tion of a single coordinator, one or more routers and end devic- es. The routers and end devices can communicate with the coordinator within the PAN. To cover large area more number of PAN is formed [13]. Worldwide Interoperability for Micro- wave Access (WIMAX) is a 4G technology used to transmit the wireless data to cover longer distances [14]. WiMAX forum mission is to promote and certify compatibility and interopera- bility of broadband wireless products [15]. WiMAX offers al- ternative to the traditional wireless data transmission over the cables and digital subscriber lines. WiMAX is based on the