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Data aggregation is very crucial techniques in wireless sensor network. Because with the help of data aggregation we reduce the energy consumption by eliminating redundancy. When wireless sensor network deployed in remote areas or hostile environment. In the wireless sensor network have the most challenging task is a life time so with help of data(More)
A wireless sensor network is a resource constraint network, in which all sensor nodes have limited resources. In order to save resources and energy, data must be aggregated, and avoid amounts of traffic in the network. The aim of data aggregation is that eliminates redundant data transmission and enhances the life time of energy in wireless sensor network.(More)
We propose a two-level hierarchy for planning collision-free trajectories in time varying environments. Global geometric algorithms for trajectory planning are used in conjunction with a local avoidance strategy. Simulations have been developed for a mobile robot in the plane among stationary and moving obstacles. Essentially, the robot has a global(More)
In recent years group-oriented services are one of the primary application classes that are addressed by Mobile Ad hoc Networks (MANET). To support such services, multicast routing is used. Multicast routing is the simultaneous delivery of data stream to multiple destinations without sending duplicate copies over any one link with the objective of resource(More)
A wireless sensor network is type of wireless network. Basically it consist a collection of tiny device are called sensor node, sensor node has a resource constraint means battery power, storage and communication capability. These sensor nodes are set with radio interface with which they communicated with one another to form a network. Wireless sensor(More)
Data aggregation is very crucial techniques in wireless sensor network. Because with the help of data aggregation we reduce the energy consumption by eliminating redundancy .when wireless sensor network deployed in remote area or hostile environment. In the wireless sensor network have most challenging task is life time so with help of data aggregation we(More)
Wireless Sensor networks consist of a large number sensor nodes that are deployed in some geographical area. The purpose of the network is to sense the environment and report what happens in the area it is deployed in. With various potential application wireless sensor network has many challenges. Energy is the main constraint of the wireless sensor network(More)
A Mobile Ad-hoc Network (MANET) is a selfconfiguring network composed of mobile nodes without any fixed infrastructure. In a MANETs, there are no difference between a host node and a router so that all nodes can be source as well as forwarders of traffic. Moreover, all MANET components can be mobile. They provide robust communication in a variety of hostile(More)
This paper studies time scaling and queuing behavior of aggregate traffic that is asymptotically self-similar and also exhibits small time-scale irregularities introduced via a cascade construction. The work was motivated by the need for a web traffic generator that exercises HTTP servers in a lab environment and yet can capture traffic characteristics of a(More)
The demand for building ultra low power circuit emerges as a challenge in recent years. This demand is due to the fast growth in battery operated wearable computing systems and implantable medical instruments. The design challenges in such systems are; low sensitivity to supply voltage variation and independence in performance with respect to power supply.(More)