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Umamaheswari, S.
- QOS-Aware Routing for Improving Performance in Cognitive Radio Sensor Networks
Authors
1 Dr. GRD College of Arts and Science, School of IT & Science, IN
Source
Wireless Communication, Vol 6, No 8 (2014), Pagination: 291-295Abstract
The Industrial Cognitive Radio wireless Sensor Network (ICRSN’s) is one of the candidate areas wherever cognitive techniques are often used for opportunist spectrum access. In the cognitive radio sensor networks, the throughput and end-to-end delay is an important consideration. To perform high performance new technology has been introduced, known as QoS-aware clustering (QAC) for cognitive radio sensor networks. QoS (Quality of Service) is the idea that communication rates, lapse rates, and other characteristics can be measured and, improved. So, based on the four factors such as throughput, delay, energy, Packet delivery ratio the path is to be selected and the data can be forwarded through the ultimate optimal path. An experimental result shows that the system achieves less delay, high Packet delivery ratio.
Keywords
Industrial Cognitive Radio Wireless Sensor Network, Quality of Service, Delay, Energy, Packet Delivery Ratio.
- Improving Data Accessibility in MANET with Node Mobility Algorithm
Authors
1 Dr. GRD College of Arts and Science, Coimbatore, IN
Source
Wireless Communication, Vol 6, No 8 (2014), Pagination: 296-298Abstract
A Mobile Ad-hoc Network (MANET) is a collection of independent wireless nodes that can move randomly which forms a short-term network which has no fixed Infrastructure [8]. A MANET is a collection of mobile nodes connected by wireless links which can configure by itself. In Mobile Ad Hoc Networks, network partitioning or performance degradation occurs due to mobility of nodes. To minimize the performance degradation we go for replication techniques. These techniques consider that all mobile nodes co-operate fully, where as some nodes may co-operate partially or may not co-operate with other nodes and they are termed as selfish nodes. These types of nodes reduce the overall data accessibility. In order to preserve their battery selfish nodes won’t transmit data to others. Most of the existing research focuses on the network issues in a MANET. The main purpose of using a MANET is to provide well-organized data services to users replica allocation is also an important area to be focused. In previous methods some time link failure nodes are identified as selfish node. To overcome these issues a novel method is proposed where each node selects its neighbor nodes by considering low link failure rate, high contact probability and high remaining energy level. Then reliable neighbor scheme is applied to select nodes from its neighbors to replicate data. Here nodes are considered reliable which contribute more memory to neighbor nodes for replication of data items.