Shaik Sahil Babu

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The traditional cryptographic security techniques are not sufficient for secure routing of message from source to destination in Wireless Sensor Networks (WSNs), because it requires sophisticated software, hardware , large memory, high processing speed and communication bandwidth. It is not economic and feasible because, depending on the application, WSN(More)
The Wireless Sensor Network (WSN) nodes are high-volume in number, and their deployment environment may be hazardous, unattended and/or hostile and sometimes dangerous. The traditional cryptographic and security mechanisms in WSNs cannot detect the node physical capture, and due to the malicious or selfish nodes even total breakdown of network may take(More)
Several methods exist for the assignment of trust to the nodes present in a Wireless Sensor Network (WSN). In this paper we develop a new algorithm for calculation of trust of individual nodes using both Direct and Indirect Trusts and thereby use the calculated trusts for determination of the different route trusts (RTs) to the Base Station. We present a(More)
Due to rapid growth in IEEE 802.11 based Wireless Local Area Networks (WLAN), handoff has become a burning issue. A mobile station (MS) requires handoff when it travels out of the coverage area of its current access point (AP) and tries to associate with another AP. But handoff delays provide a serious barrier for such services to be made available to(More)
Due to rapid growth in IEEE 802.11 based Wireless Local Area Networks(WLAN), handoff has become a burning issue. A mobile station (MS) requires handoff when it travels out of the coverage area of its current access point (AP) and tries to associate with another AP. But handoff delays provide a serious barrier for such services to be made available to mobile(More)
In Wireless Sensor Networks (WSNs), all the nodes selected for packet routing must be trustworthy, and at the same time energetic too. Smooth conservation of nodes energies and the trust levels, are an important issues in WSN because they directly affects the life span and reliability of the nodes as well as the entire network. The energy utilization at(More)
Sensor nodes of Wireless Sensor Networks (WSNs) are resource constraints in energy, memory, processing and communication bandwidth. Since they are operated by battery, their life span is limited. Specially, energy conservation is very important issue in the WSN, because it directly affects the life of the node as well as the entire network. Here, we develop(More)
Presently IEEE 802.11b based wireless networks are being widely used in various fields like personal as well as business applications. Handoff is a critical issue in IEEE 802.11b based wireless networks. When a mobile node (MN) moves away from the range of its current access point (AP) it needs to perform a link layer handoff. This causes data loss and(More)
In low earth orbit(LEO) satellite network Mobility management is one of the key technologies. The aim of mobility management is to track where the subscribers are, allowing calls, SMS and other mobile phone services to be delivered to them. In this paper, we have proposed an idea of controlling the frequency hops and hence controlled the mobility management(More)
Now-a-days LEO satellites have an important role in global communication system. They have some advantages over GEO & MEO satellites such as power requirement and end-to-end delay is lower and it has more efficient frequency spectrum utilization between satellites and spotbeams. So in future they can be used as a replacement of modern terrestrial wireless 1(More)