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In wireless multihop networks, a sequence of data messages are transmitted along a predetermined wireless multihop transmission route. Collisions among wireless transmission signals from the intermediate wireless nodes cause reduction of the end-to-end data message throughput. Hence, avoidance and/or reduction of collisions between 2-hop neighbor intermediate nodes due to the hidden terminal problem...
A Wireless Sensor Network (WSN) is a network formed by a large number of sensor nodes where each node is equipped with a sensor to detect physical phenomena in our life. On the networking technique aspect, WSNs are regarded as a information gathering mean from sensor nodes to collected data node in general scenario. With the rapid utilities of applications based sensory data, WSNs based on the IEEE...
Wireless Sensor Networks (WSNs) play as a key important role in Internet of things era, they provide a lot of utilized applications deployed in quite different environments. Beside its clear benefits, a WSN has to face with several challenges which come from a practical environments such as interference phenomenon, energy limitation, transmission constraints or mobility model. Especially, several...
In wireless ad hoc network the wireless sensor networks form a great part in the recent period. There are many challenging issues that have been faced in the wireless sensor networks. Data collection by improving the throughput performance forms a great issue. To increase the throughput performance over a dense area network with large number of sensor nodes energy consumption with pre-specified path...
Wireless body area network is an application of sensor network and open for research in our propose work we Firstly we begin with the round of transmission for selecting cluster head, for that we have to define a criteria that is based on specific energy values for selecting a node as cluster head, In the phase of selecting cluster head a probability distribution is utilized that is relayed on probabilistic...
As the wireless networks has the capability toharvest RF signal's energy and therefore can be referred as selfsustained networks. Wireless networks can act as self-sustaining byharvesting the energy from RF signals (radio frequency). In recenttime, researchers have developed efficient circuitries &components for harvesting the RF energy for low powered wirelesselements. By its support, and based...
A data gathering protocol for multi-channel wireless sensor network is proposed in this paper. The sensor field is logically divided into some finite number of grids. Each grid is managed by a potential node called as grid manager. Each grid manager is also responsible for communicating aggregated data generated inside the respective grid to the base station either directly or via multi-hop communication...
The impact of various mobility models like flag mobility and random waypoint mobility models on QoS issues in MANET and WSN are studied. The performance of the MANET and WSN are evaluated for the mobility models using QualNet 6.1 simulator. Performance is concerned with the Average End to End delay, Jitter, Throughput and also total messages received. which are studied for the various mobility models,...
This paper investigates the problem of maximizing uniform multicast throughput (MUMT) for multi-channel dense wireless sensor networks, where all nodes locate within one-hop transmission range and can communicate with each other on multiple orthogonal channels. This kind of networks show wide application in the real world, and maximizing uniform multicast throughput for these networks is worth deep...
The anticipated paper address the retard of congestion in WSN (wireless sensor network) by making use of a mobile sink to diminish congestion. In addition, in the used method data cruises a restricted amount of hops to land at the mobile sink (MS), that in turn helps in improving the energy utilization of the wireless nodes. Parameters for instance packet delay, packet loss as well as throughput are...
The proposed work aims at designing routing method and data compression algorithm for WSN's. An ad-hoc network (WANET) is considered and based on certain criteria the data is forwarded dynamically. Various parameters such as Compression Ratio, Packet Delivery Rate, Energy consumption are considered to determine the efficiency of the network. One of the primary parameters to be considered in the configuration...
In recent past, researchers have shown a lot of interest in Under Water Sensor Networks (UWSNs) because of its application in wide range of domains. UWSN, actually a sub body of Wireless Sensor Networks (WSN), facilitate with radio communication with high-precision of information to a sink node from any of the source node. The Role of any-casting is of significant importance in the context of routing...
In wireless multihop networks, a sequence of data messages are transmitted along a predetermined wireless multihop transmission route. Collisions among wireless transmission signals from the intermediate wireless nodes cause reduction of the end-to-end data message throughput. Hence, avoidance and/or reduction of collisions between 2-hop neighbor intermediate nodes due to the hidden terminal problem...
In nigh application, it is indispensable to discover or supervise the behavior of the surrounding situation at a fine resolution over large spatial-temporal scales therefore WSN (Wireless Sensor Network) is well-advised. Because of smaller size and low power requirement of sensor device use of WSN for watching the surrounding action is increased time to time. Numeral of sensor inside WSN is proportionate...
The IEEE 802.15.4 standard for the Low Rate Wireless Personal Area Networks (LR-WPANs)is popular and widely used for many areas of applications. The standard uses slotted CSMA/CA protocol in it's contention access period (CAP) in the beacon enabled mode. The protocol adopted a Binary Exponential Backoff (BEB)algorithm. In this paper, we investigate the saturation throughput of this standard using...
In this paper we propose a Multichannel based X-MAC protocol (MX-MAC) with the objective of eliminating hidden node problem of existing asynchronous X-MAC protocol, as well as reducing average packet delay. To address the hidden terminal problems, multi channel enables a receiver to send a preamble with next receiver ID on the control channel to notify its neighbors that an ongoing reception is in...
Energy in MAC protocols becomes an important research issue because sensor nodes are mostly take their power from batteries that are not easily to be recharged. The aim of this paper is to improve MAC protocol in underwater sensor networks by enhancing the performance of ALOHA protocol, which considered as one of the most popular MAC protocols. This work proposed a method for preserving the energy...
Multipath TCP (MPTCP) enables a single TCP connection to use multiple paths for data delivery. This is expected to increase the overall data transfer throughput by utilizing the multihoming capabilities of communicating nodes. This paper introduces an experimental study of MPTCP connections of multihomed wireless nodes. The nodes' transceivers use two wireless interfaces. One is connected to a WiFi...
Modelling data flow in wireless networks is a complicated task, since network dynamics are frequently unpredictable. The situation is even harder in the case of Wireless Sensor Networks (WSNs). Thus, many researchers instead of modelling the microscopic behavior of each single node, they choose to model traffic flow macroscopically. Fluid dynamic principles provide researchers with a powerful tool...
The energy consumption is one of the main problems which remain to be addressed in wireless sensor networks (WSNs). Therefore, in recent years several clustering routing protocols for homogeneous and heterogeneous sensor networks have been proposed since these protocols are playing a key role in reducing energy consumption of the WSNs. A new Multi-Level Energy-Efficient Clustering (MLEEC) heterogeneous...
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