Md. Jaminul Haque Biddut

Simulation based analysis of formalin detection through photonic crystal fiber

Formalin is a dangerous organic chemical substance in todays life. It is the solution of two substances; Formaldehyde and Water. Formalin is used forlong time preservation for various types of foods and other things from rotting. It affects human life to environmental ecology. Formalin detection is a challenging task. Without chemical experts, it is hard to detect and it is also a time consuming task. In this regard, a smart, reliable but simple detection technique is on demand. To detect it efficiently, the optical characteristic of Formalin such as refractive index is chosen for analysing. This paper presents a Photonic Crystal Fiber (PCF) based Formalin sensing technique. A simple PCF structure has been proposed to sense Formalin. The structure follows all the optical properties for the propagation of light energy. An intensive simulation has been done. The simulation results show that the proposed simple PCF structure is handy to detect Formalin with a remarkable sensitivity.

An Analysis of QoS in ZigBee Network Based on Deviated Node Priority

ZigBee is an IEEE 802.15.4 standardized communication protocol. It forms a flawless Wireless Sensor Network WSN standard for interoperability at all levels of the network, particularly the application level which most closely touches the user. A large number of devices from different vendors can work seamlessly. These devices act as a network and send huge data traffic to the Coordinator. End devices at different zones have different roles in communication with each other. There has been a lack in executing their requests in a synchronized way based on task priority. This lack leads to massive data traffic loss and degrades the Quality of Service QoS. One of the challenges is to analyze the QoS parameters in ZigBee network that help to detect the overall network performance. The contribution of this paper is twofold; first, a ZigBee Network is implemented based on node priority. It demonstrates a method to generate a new priority of devices with respect to their existing priority and zones’ priority as well. Second, the QoS is analyzed based on the new priority status for tasks preference purposes. The outcome of this paper shows that the QoS of the network is more conspicuous than non-priority based network.

Improved Quality of Service in ZigBee network with statistical modeling

Wireless Sensor Network (WSN) comprises the less power consuming, light weight and effective Sensor Nodes (SNs) for higher network performance. ZigBee is the real time application for the WSN used for low-cost data and energy consumption characteristics. ZigBee is a robust network certain application of which has come out with a critically low designation for less data rate, long delivery delay and packet loss as well in order to lower the cost. However, ZigBee devices have many potential features to make a splendid wireless network. Hence, putting an improvement analogy inside the performance parameter is a way to overcome the limitations of ZigBee usage in certain scales. ZigBee follows a model for its node distribution, traffic routing and Quality of Service (QoS). The QoS indicates the efficiency and performance of any network. The increase in efficiency of QoS on the ZigBee network lies in the realization of maximizing throughput of the network. This paper is destined to represent the improved QoS in the ZigBee network applying Stochastic and Widest Path models. Riverbed Simulator v17.5 is used to investigate foremost QoS parameters in the ZigBee network. The optimized result of this study will be handy in the application field of the ZigBee network. And it also best fits for the deployment of the large-scale device to device communication.

On the analysis of RED algorithm in ZigBee network for queue management

ZigBee is a sensor based IEEE 802.15.4 wireless standard. ZigBee has taken a role in the utilization of wireless network for diverse applications in home, office or industrial automation. The vast use of ZigBee devices which bring forth a huge application traffic. ZigBee Coordinator processes the application traffic. This traffic waits to be executed in the Coordinator queue. Routers transfer the application traffic to the destination. These huge application traffic can be a cause of queuing drop which reduces throughput as well as increases delay. An active queue management is in demand for ZigBee Coordinator. In this paper, Random Early Detection (RED) algorithm is applied to maintain Coordinator queue for gaining high throughput as the lowest possible delay and data packet dropped. The simulation results show the performance of RED enabled network parameters are better. This analysis will be a convenient direction for the further development of ZigBee network.

An analytical study to minimize load of ZigBee network based on statistical modeling

ZigBee is a protocol for high-level communication under IEEE 802.15.4 standard. ZigBee network specification creates a personal area network for small, less-power consuming radio communication. The vast use in device to device communication of ZigBee turns its possibility in the use of the Internet of Things. A large amount of sensor nodes is interconnected through the Coordinator in ZigBee network. The end nodes send a huge amount of sensing data to the Coordinator via intermediary nodes like routers. These huge data creates overhead application traffic load in routers and Coordinator. A load balancing mechanism is necessary for a ZigBee network to contain multiple Personal Area Networks (PAN) and switch the threshold PAN loads with simplified network routing. This paper represents a novel ZigBee network model based on Stochastic and Widest Path process for proper traffic orientation, queuing and analyze load minimization issues. The two statistical models are put through in the ZigBee network using Riverbed to reduce and balance the overhead load. The result indicates that applying Stochastic process minimize the Medium Access Control (MAC) layer load as well as the overall ZigBee network load. This research will be helpful in large-scale integration of sensor nodes in a balanced ZigBee network for data load.

Queue management of RED enabled ZigBee network based on packet size variations and distribution techniques

The IEEE 802.15.4 wireless communication standard named ZigBee is a wondering sensor. ZigBee is vastly used in device-to-device communication, both at home, office or industry for day-to-day applications. Zillions of devices are interconnected to set up a such an automotive system. These devices generate a massive amount of application traffic. ZigBees Coordinator Queue handles this application data traffic with the default traffic distribution and processing technique. Without applying an active queue management scheme, data traffic might be dropped that causes higher end-to-end delay, higher load, and lower throughput. This paper implements the popular Random Early Detection (RED) algorithm for maintaining ZigBees Coordinator queue with varying packet sizes and distribution techniques. The extensive simulation results show that the RED enabled ZigBee network has better performance in terms of the lower sized packet in uniform distribution. The analysis of this study will be a myopic direction for the further development of ZigBee network.

A new approach of ZigBee MAC layer design based on security enhancement

ZigBee is a wireless standard based on IEEE 802.15.4 specification for a set of communication protocols. It is intended for remote control and sensor applications. ZigBee is designed to use low power digital radio signals for personal area networks which require secure networking. The use of the ZigBee protocol accommodates and facilitates for carrying out secure communications, ciphering frames and controlling devices, protecting establishment and transport of cryptographic keys. This paper presents a security enhancement technique for ZigBee by modifying the MAC layer. This work also serves enhanced security processing in Network and Application layer of ZigBee protocol. The improved security mechanism of Network and Application layer has been developed using Radio Frequency Identification (RFID) and proxy firewall techniques respectively. Riverbed v17.5 is used to simulate and scrutinize different ZigBee layers to enrich security. The result of this study provides reliable and stable ZigBee protocol scheme to end users. Furthermore, the paper shows security adoption in MAC, Network, and Application layers of ineligible nodes, packets, and data blocks. The benefits of the work include end-to-end security with confidentiality, data packet integrity, message and device authentication.