International Journal of Advanced Networking and Applications

Shikhar Bhagoliwal ¹, Jyotirmoy Karjee ¹

Affiliations
1 Department of Computer Science and Engineering, Manipal University, Jaipur, IN

Abstract

Portability increases the probability for a wireless device to be stolen or lost. These devices usually carry sensitive business or private information. Government Employees store classified documents on their mobile devices. Corporate users save confidential files, PINs, Passwords on their devices. So the content of such devices should be protected from unauthorized access. However, the protection provided should not be heavy for a mobile phone because it would minimize the computing power, storage space, battery lifetime. To prevent this from happening, we are providing an algorithm which would ensure data privacy for the end users. ASCII values of plain text will be used to generate a secret key and same key would be used for decryption. It can be said to be a symmetric encryption algorithm because same key is used to encrypt and decrypt the data. A Secret key will be randomly generated from the ASCII values of plain text which when encrypted with the plain text will provide a cipher text which will be sent back to the Application with the key. For Decryption, cipher text and key will be fetched from Application and decryption process will occur at server. By this method this application will not be heavy for a mobile phone and this would be an efficient method for data security.

Keywords

ASCII Values, Cipher Text, Decryption, Encryption, Plain Text, Secret Key.

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Mridul Mohan Bharadwaj ¹, Jyotirmoy Karjee ¹

Affiliations
1 Department of Computer Science and Engineering, Manipal University, Jaipur, IN

Abstract

This paper proposes an improved configuration of Cellular Antennas for terrains like hills where network coverage is poor and a number of black spots are very high. The proposed solution delivers efficient and much robust antenna structure which provides better network coverage by using 90-degree sector antennas. The radio spectrum of the 90-degree sector antenna is also shown to give the idea of cell coverage in order to build aseamless network in the region.This paper also proposes different channel allocation schemes that can be used with the proposed antenna configuration to deliver better network coverage and low call dropping probability. This is achieved by analyzing the terrain of the region and also the cellular traffic in the region. In areas where network traffic is almost constant or have low population, strategies like fixed channel allocation can be used effectively and efficiently. While in the areas where traffic is unpredictable or is subject to regional festivals or tourism, channel strategies like dynamic channel allocation are very useful to fulfill the demand of the overall network. The simulations and validations for the proposed methodology are done using MATLAB.

Keywords

Antenna Configuration, Cellular Network, Channel Allocation Schemes, Coverage Black Spots, Hill, S Sector Antenna, Terrain.

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Jyotirmoy Karjee ¹, H. S. Jamadagni ¹

Affiliations
1 Centre for Electronics Design and Technology, Indian Institute of Science, Bangalore, IN

Abstract

The main objective of this paper is to reduce the number of sensor nodes by estimating a trade off between data accuracy and energy consumption for selecting nodes in probabilistic approach in a distributed network. Design Procedure/Approach: Observed data are highly correlated among sensor nodes in the spatial domain due to deployment of high density of sensor nodes. These sensor nodes form non-overlapping distributed clusters due to high data correlation among them. We develop a probabilistic model for each distributed cluster to perform data accuracy and energy consumption model in the network. Finally we find a trade off between data accuracy and energy consumption model to select an optimal number of sensor nodes in each distributed cluster. We also compare the performance for our data accuracy estimation model with information accuracy model for each distributed cluster in the network. Practical Implementation: Measuring temperature in physical environment and measuring moisture content in agricultural field. Inventive/Novel Idea: Optimal node selection in probabilistic approach using the trade of between data accuracy and energy consumption in a cluster-based distributed network.

Keywords

Spatial Correlation, Distributed Clusters, Data Accuracy, Energy Consumption, Tradeoff, Wireless Sensor Networks.

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