Apurva Gupta

Bio: Apurva Gupta is an academic researcher from University of Petroleum and Energy Studies. The author has contributed to research in topic(s): Synchronization & Wireless network. The author has an hindex of 1, co-authored 2 publication(s) receiving 1 citation(s).

Out-Degree Based Clock Synchronization In Wireless Networks Using Precision Time Protocol

Abstract: In this paper, an extension of Precision Time Protocol (PTP) to enable energy-efficient clock synchronization between the nodes within Wireless Sensor Network (WSN) is proposed. PTP is nanosecond accuracy clock synchronization protocol in which nodes are organized in master-slave hierarchy on the basis of clock accuracy by means of Best Master Clock (BMC) algorithm. The algorithm considers clock accuracy to select best clock in the system. A novel modification of IEEE 1588 BMC algorithm for energy-constraint multi-hop WSN has been proposed to reduce clock convergence time and energy needed by considering out-degree of clocks without sacrificing synchronization accuracy. The new algorithm results in energy efficient clock synchronization that makes it most appropriate for low-power multi-hop wireless sensor networks. We present NS-3 simulation data that confirms the effectiveness of work.

Self-organized Bacterial Evolutionary Dynamics: Fractal Characteristics

Abstract: In recent years, a new theory of the evolution of microbes under normal and stressed conditions has emerged, mainly in reference with the development of fractals and of self-organized mapping (SOM) concepts. This theory has much improved our understanding of the growth pattern of microbes like bacteria which determine their dynamics of evolution. In the first part of this paper, the main ideas in the theory of microbial self-organization are outlined, and some remarkable features of the resulting growth patterns are presented. In the second part, we apply conceptual tools developed in the context of fractal geometry to the study of the scaling properties of the bacterial growth in context with SOM patterns. We observe that such growth patterns appear to be more complex than simple fractals, although in some cases a simple fractal framework may be adequate for their description.

Improving Energy Efficiency and Quality of Service in Wireless Body Area Sensor Network using Versatile Synchronization Guard Band Protocol

Abstract: In the last few years there has been a growing interest in Wireless Body Area Network (WBAN) due to its latency and enhance the health care features by continuously monitoring the condition of the patient and early identification of problems. A major difficulty has been occurring to design network such as Medium Access Control (MAC) protocol that primarily part of the WBANs for functioning in a well-organized way. Therefore, it limits the sensor node energy for Quality of Service (QOS) and life cycle of the network. Accordingly, this work introduces a Versatile Synchronization Guard Band Protocol (VSGP) namely VSGP, which deals with guard band (GB) in each time slot it reduces the interference of the transmitting signal and increase the efficiency of QOS and its energy. WBAN performed with more number of sensor nodes are connected to the coordinator. VSGP protocol is compared with two existing methods called Self Adaptive Guard Band (SAGB) and Traditional Guard Band protocol. Comparisons are made with time and packet flow of each transmission and energy per packet flow.