Udaya Kumar K Shenoy | Visvesvaraya Technological University (original) (raw)

Papers by Udaya Kumar K Shenoy

2017 International Conference on I-SMAC (IoT in Social, Mobile, Analytics and Cloud) (I-SMAC)

Transmission control protocol is a reliable, connection oriented, congestion control protocol use... more Transmission control protocol is a reliable, connection oriented, congestion control protocol used by most of the networks. Significance of TCP is the congestion control mechanism that controls TCP sending rate and makes TCP react to congestion signals. Variety of TCP variants is available to suite to the requirements of various networks. TCP is a transport layer protocol that ensures ordered delivery of packets which complements the Internet Protocol (IP) at network layer. Routing is the main job at the network layer. There are various routing protocols that are used to route the packets. In this paper we performed a comparative analysis of the TCP variants — TCP Tahoe, TCP Reno, TCP New Reno over routing protocols — AODV, DSDV and DSR using the NS-2 network simulator. These results can be further used to conduct any experiments with proper combinations of TCP and routing protocols.

2017 International Conference on Energy, Communication, Data Analytics and Soft Computing (ICECDS), 2017

Mobile ad hoc networks (MANETs) are dynamic, multi-hop networks with wireless mobile nodes that e... more Mobile ad hoc networks (MANETs) are dynamic, multi-hop networks with wireless mobile nodes that exchange data without using any centralized entity. Typically, nodes in a MANET have uncontrolled mobility, communicate using shared wireless channel and operate on battery power. Due to its dynamic nature and distributed cooperation, routing overhead in MANET is of great concern for any application. Several well-known protocols exist in literature for handling routing between nodes in the mobile environment. Node mobility can have a considerable impact on the performance of these protocols. The performance can also vary because of mobility model that describes the movement patterns of the nodes. In this paper, we study and analyze the impact of mobility on some of the well-known MANET routing protocols. Our purpose is to investigate the behavior of MANET routing protocols under different mobility environment.

2017 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), 2017

Wireless Sensor Networks (WSN) consist of nodes geographically distributed in a remote and hostil... more Wireless Sensor Networks (WSN) consist of nodes geographically distributed in a remote and hostile region to monitor certain real time events. Sensor nodes collect the sensed data, process and forward it to the sink or base station using multi-hop transmission. Each sensor node is equipped with a battery which, in most cases, is impractical or infeasible to replace manually. Thus, one of the important research issues in WSN is minimizing energy dissipation that reduces the network lifetime. In WSNs with stationary sink, nodes near the sink forward more traffic than farther away nodes due to multi-hop forwarding. As a result, nodes near the sink deplete their energy faster than farther away nodes thereby reducing the WSN lifetime. To address this issue, an optimum mobile sink path based data gathering is proposed where a mobile sink follows the optimum path to collect the sensed data in a large-scale WSN.

2017 International Conference on Energy, Communication, Data Analytics and Soft Computing (ICECDS), 2017

Wireless Sensor Networks plays a prominent part in the electronic world. Sensors are used in the ... more Wireless Sensor Networks plays a prominent part in the electronic world. Sensors are used in the location where frequently intervention of humans is not possible. Wireless sensor networks are application specific. This designed project is also application specific In this project the wireless sensor network is designed in way that in a large network scenario the nodes which are closer to each other or in the range of certain nodes form a group called clusters. These clusters contains cluster head, these cluster head are responsible for transmission of the data from the nodes to the sink. In this project the sink is mobile, the sinks moves to cluster heads and collects the data. These collected data can be further computed to derive the useful information.

2018 International Conference on Electrical, Electronics, Communication, Computer, and Optimization Techniques (ICEECCOT), 2018

The Routing Protocol for Low Power and Lossy Networks (RPL) of Ipv6 is utilized in the Internet o... more The Routing Protocol for Low Power and Lossy Networks (RPL) of Ipv6 is utilized in the Internet of Things to show the performance of system when the nodes are in portable mobility condition. In this paper, we assess the exhibitions of RPL versatility for mobility features. Two congurations, namely Serial and Parallel mobility model are considered in this paper. To evaluate the performance, experiments are executed using the Cooja simulator. Extensive simulation is carried out for different topologies under these models. The performance of serial mobility model is compared with parallel mobility model. Our simulation results show that serial mobility model is more energy efficient than the parallel mobility model for various topologies.

2017 International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT), 2017

Network can comprise of mobile and non-mobile nodes. Packets are transmitted in the network from ... more Network can comprise of mobile and non-mobile nodes. Packets are transmitted in the network from transmitter (source) to specific receiver (destination) using the neighbouring nodes. Three protocols which are used for routing are used to evaluate the performance: WRP, LAR and AODV by using factors such as packet delivery ratio (PDR), throughput and packet drop percentage (PDP). In non-mobile nodes the routes to the source from destination can be achieved without great efforts when compared to that of the mobile nodes, since the non-mobile nodes are stationary. But in case of mobile nodes, nodes tend to shift their position on timely basis with variant speed, this will lead to update the routing tables as and when the node traverse away from other nodes. The comparison between the both mobile and non-mobile is also made. The Performance has been evaluated by using network simulator tool GloMoSim (Global Mobile information systems Simulation).

Mobile sinks are useful in mitigating the formation of energy-holes due to uneven energy expendit... more Mobile sinks are useful in mitigating the formation of energy-holes due to uneven energy expenditure among sensor nodes in a Wireless Sensor Network (WSN). A mobile sink travels across WSN and gathers sensor readings via single-hop communication. To deal with data collection latency in delay-sensitive applications, many proposals have investigated techniques based on Rendezvous Points (RPs) where a mobile sink plans a tour that visits a subset of sensor nodes to collect data within a given deadline. In such a WSN, the number of RPs is limited due to the maximum allowed sink tour length. Therefore, in a large WSN, selected RPs are required to forward a large number of packets, which results in early energy depletion. In this paper, we have proposed an approach that attempts to lessen the RP’s burden of forwarding large number of data packets in such WSNs.

The Internet of Things is a system, which connects many heterogeneous devices and it finds applic... more The Internet of Things is a system, which connects many heterogeneous devices and it finds application in several areas. The network used in IoT is Low Power and Lossy Networks (LLN) because the devices used in IoT are power constrained. LLN uses Routing Protocol for Low Power and Lossy Networks (RPL) as its routing protocol and it is considered as an IETF standardized protocol for LLN. RPL constructs Destination Oriented Directed Acyclic Graph (DODAG) to select the appropriate path to the destination. In RPL, the DODAG can be constructed based on the objective function. Thus, the selection of the best objective function plays a major role in RPL. The main metric for selection of objective function is the power, as our focus is on the design of power efficient IoT. The most widely used objective functions in RPL are OF0 and MRHOF. The metric used by objective function OF0 is hop count and MRHOF uses expected transmission count metric. In the existing research, the superiority of the...

International Journal of Sensors, Wireless Communications and Control, 2018

International Conference on Computer Networks and Communication Technologies, 2018

The modern world had been dominant to the automation applications. We can see that the smart appl... more The modern world had been dominant to the automation applications. We can see that the smart applications are being leveraged significantly. The deployment of Smart watch, Smart Cars, Smart Homes are the common examples that can be referred to automation. The core of the automation technology lies in the domain of Wireless Sensor Networks referred as WSN and the Internet of Things, i.e., IoT. The prominent part or the concept in the technology is the sensors. The common name for this sensors are nodes in common network terms. The major consideration in any of the sensor networks or the IoT environment is the energy availability at each nodes. Therefore the minimal energy consumption by the nodes of the network or the energy consumption factors are highly observed. The nodes are also supposed to perform immediate regrouping of the network whenever the nodes die. In this paper, the behaviour of the low power protocol called 6LowPan abbreviated as IPv6 over Low-Power Wireless Personal ...

Advances in Intelligent Systems and Computing, 2021

International Conference on Computer Networks and Communication Technologies, 2018

A comparative study with simulation has been carried out in this paper to choose a combination of... more A comparative study with simulation has been carried out in this paper to choose a combination of routing protocol with the suitable TCP variant for video transmission over mobile ad hoc networks. Simulation is carried out to choose a routing protocol out of AODV, AOMDV, DSR and DSR protocols for ad hoc networks that suit the need of ad hoc scenario. AODV protocol is found to perform better than other routing protocols. Performance of TCP variants such as TCP Reno, TCP NewReno, TCP Tahoe, TCP Vegas, and TCP Sack is then compared for the video transmission in ad hoc networks by adapting AODV as routing protocol. The simulation results show that TCP Vegas with AODV gives good performance.

International Journal of Recent Technology and Engineering (IJRTE), 2019

Internet of Things, abbreviated as IoT is a network used mainly for the communication where diffe... more Internet of Things, abbreviated as IoT is a network used mainly for the communication where different devices are connected for the retrieval, examination and execution of the necessary task. One of IoT’s biggest challenge is that, they are resource-constrained. Hence, it is essential to use an efficient data transmission protocol for routing. An effective routing protocol for static IoT network is the Routing protocol for Low Power and Lossy Networks (RPL). It is essential to assess the effectiveness of the RPL with the selection of best objective function for different static model. In this paper, the performance of different routing algorithms is compared in connection with different static topologies. Hence, the objective function’s performance is compared for different topologies i.e., Butterfly, Ring and Umbrella topologies. We consider two objective functions: namely Minimum Rank with Hysteresis Objective Function (MRHOF) and Objective Function Zero (OF0). MRHOF considers Exp...

International Journal of Recent Technology and Engineering (IJRTE), 2019

In Wireless Sensor Network the delay in delivery of data problem can be reduced by using mobile s... more In Wireless Sensor Network the delay in delivery of data problem can be reduced by using mobile sink. Mobility of the sink has been demonstrated to be the best method to reduce delay in the network. So the path selection for the movement of the sink plays an important role. Hence the selection of minimum number of stopping points are called Rendezvous Points (RPs) is very challenging in WSNs. So a productive procedure was proposed to choose the RPs to develop path for moving sink. At first set of potential points will be generated by using a technique and then using greedy algorithm the RPs were selected from the potential points set. Then an optimization method is used to get still more optimized points. At that point these points are utilized to select path for sink. Proposed algorithm was simulated with some current algorithms and results will be compared based on different performance metrics to demonstrate the viability of the present work.

International Journal of Autonomous and Adaptive Communications Systems, 2019

Data gathering using mobile sinks is considered one of the efficient and cost-effective strategie... more Data gathering using mobile sinks is considered one of the efficient and cost-effective strategies to mitigate the hotspot problem in wireless sensor networks (WSNs). Although sink mobility is beneficial in many ways, these benefits are not without its new challenges. A major concern is achieving a good balance between sensors' energy consumption and message delivery latency. The unique characteristics and requirements of wireless sensor networks make this task a significant challenge. Another major challenge is coping with the changing topology caused by the sink mobility. The sensor nodes are required to maintain fresh routes toward the latest sink location for efficient data delivery. This paper proposes data gathering schemes to address these two major issues in WSNs by using a virtual overlay structure built over the existing physical network. Simulation results reveal a reduced route reconstruction cost and a good trade-off between network life-time and data delivery latency.

Journal of Computational and Theoretical Nanoscience, 2019

2016 International Conference on Communication and Signal Processing (ICCSP), 2016

Wireless channel condition varies due to factors like fading, path loss, noise and other channel ... more Wireless channel condition varies due to factors like fading, path loss, noise and other channel impairments. Due to these the channel throughput, packet delivery ratio also varies. In order to achieve higher transmission rates, various modulation schemes are in use. Adapting suitable modulation scheme to match the transmission rates to time varying channel conditions can increase the throughput of mobile adhoc networks. The simulation experiment carried in this paper dynamically adapts BPSK, QPSK, 16-QAM or 64-QAM for a single UDP traffic between a sender and receiver. Modulation schemes are varied by varying packet drop rates and distance of receiver from sender for a video traffic in OFDM channel using AODV as the routing protocol. The performance is measured in terms of PDR, throughput, PSNR and routing overhead for this adaptive modulation and coding technique.

Advances in Intelligent Systems and Computing, 2015

Wireless mesh networks (WMN) possess characteristics such as self-healing, self-configuring and s... more Wireless mesh networks (WMN) possess characteristics such as self-healing, self-configuring and self-discovery. Due to this nature WMN has emerged as the most widely used popular network. Since these devices are operated using battery resources, several works have been carried out for minimizing energy consumption during routing process, thereby increasing network lifetime. WMNs are more vulnerable for attackers due to its wide usage. Many works can be found to detect the intruder during routing without considering energy as a metric. There exist possibilities of intruder to attack the battery resource thereby reducing network efficiency in energy-aware routing. Hence in this work we propose a novel approach to detect an intruder by self-monitoring mechanism of node considering metrics such as packet size, data rate, remaining energy and draining rate of a energy resources of a node. The proposed model consists of three modules, namely self-intrusion detector, monitor and evaluator. It detects and helps in making decisions to participate in the network transmission. The working of the model is analyzed and shows that the proposed model detects intruder effectively, thereby resulting in increase of WMN efficiency.

International Journal of Computer Applications, 2015