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Sailaja, M.
- Multi-Hop Cluster Based Routing Protocol for Wireless Sensor Networks
Authors
1 ECE Department, Regency Institute of Technology, Yanam, IN
2 ECE Department, Jawaharlal Nehru Technological University, Kakinada, IN
Source
Wireless Communication, Vol 4, No 5 (2012), Pagination: 269-273Abstract
A novel approach for prolonging the lifetime of a wireless sensor network using clustering routing protocol while maintaining desired quality of service attributes related to sensed data delivery is presented. This paper proposes a Multi-hop Cluster based Routing Protocol for long range transmission in wireless sensor network. The protocol consists of two parts, one is with respect to cluster management in sensor area and the other is about the data transmission between base station and the sensor area. The new clustering and routing algorithm's scale well and converge fast for large scale dynamic sensors as shown by our extensive results using the Network Simulator (NS2). It is a flexible tool for network engineers to vestigate how various protocols perform with different Configurations and topologies. Simulation results shows that the proposed protocol offers a better performance than single-hop clustering routing protocols in terms of network lifetime and energy consumption when the base station is located far away from the sensing area.Keywords
Wireless Sensor Networks, Gateway Node, Energy Efficient, Cluster Head, Multi-Hop Clustering.- Multi Tree Database Architecture for Location Tracking in Next Generation Mobile Networks
Authors
Source
Wireless Communication, Vol 2, No 11 (2010), Pagination: 425-430Abstract
The next-generation mobile network will support terminal mobility, personal mobility, and service provider portability, making global roaming seamless. A location-independent personal telecommunication number (PTN) scheme is conducive to implementing such a global mobile system.
In this paper, firstly we propose multi tree database architecture consists of a number of database subsystems, each of which is a three-level t also proposes indexing schemes for each type of location databases and analyzes their efficiency and cost in terms of database access time and storage requirement. Tree structure and is connected to the others only through its ischolar_main. Results have revealed that the proposed database architecture for location management can effectively support the anticipated high user density in the future mobile networks.Keywords
Database Architecture, Location Management, Location Tracking and Mobile Networks.- An Adaptive CSMA/TDMA Hybrid-Mac for Wireless Sensor Networks
Authors
1 ECE Department in Regency Institute of Technology, Yanam, IN
2 ECE Department in JNTUK, Kakinada, IN
3 SIET, Narsapur, IN
Source
Networking and Communication Engineering, Vol 4, No 4 (2012), Pagination: 230-234Abstract
A new approach for energy efficient sensor networks that maximizes the life of the sensor networks which maintaining desired quality of service attributes related to sensed data delivery is presented. The IEEE802.15.4 as a standard for low rate wireless personal area network (LR-WPAN) is an applicative choice for wireless sensor networks. Due to the advantages of this standard and its capabilities for more specification to wireless sensor networks, we were persuaded to resolve some of its proven weaknesses in such environments. The slotted CSMA/CA method utilized in beaconsenabled mode of 802.15.4 causes an unacceptable level of energy consumption in conditions like high loads. To overcome these issues, we adopted method the capability and flexibility provided by CSMA/CA makes it work at low contention and TDMA makes it work at high loads by taking advantage of a greedy algorithm for TDMA slot allocation. Using these techniques we obtained improved results such as reduced energy consumption, improved throughput and decreased end to end delay. The new ATDMA and routing algorithm's scale well and converge fast for large scale dynamic sensors as shown by our extensive results using the Network Simulator (NS2).