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Reliability and timeliness are two essential requirements of successful detection of critical events in Wireless Sensor Networks (WSNs). The base station (BS) is particularly interested about reliable and timely collection of data sent by the nodes close to the ongoing event, and at that time, the data sent by other nodes have little importance. In this paper, we propose Congestion and Delay Aware...
Recently, many studies exploit mobile sinks to construct large-scale databases for environmental observations or weather forecasting. Mobile sinks travel in the sensing area that sensors are deployed, collect data from each sensor, and uploads them to sensor databases. By using mobile sinks, we can reduce communication traffic and maintenance cost compared with those for wireless sensor networks (WSNs)...
This paper deals with the model of Adaptive multi-hop routing algorithm for Wireless Sensor Network (WSN) and its results are presented. Certain parameters like energy level, delay and velocity are considered. These decisions will come up with the optimal and organized route for WSN. In addition, the stated algorithm is enhanced with the multipath capability to avoid congestion state in WSN. Eventually,...
TCP is primarily designed for wired networks and became very efficient and robust with years of enhancements. However, experiments and research showed that TCPpsilas congestion control algorithm performs very poorly over Wireless Sensor Networks with degraded throughputs. This paper studies TCPpsilas throughput issues in Wireless Sensor Networks, and designs an improved congestion control algorithm...
For solving the issue of congestion in WSN (wireless sensor network), proposed a congestion avoidance and control mechanism for multiple paths routing protocol (MR-CACM), which integrates fairness, status of congestion and level of energy. Consequently the network can avoid congestion by assigning traffic to different paths. When congestion is occurred, it can help to detect congestion by using the...
High-rate streaming in WSN is required for future applications to provide high-quality information of battlefield hot spots. Although recent advances have enabled large-scale WSN to be deployed supported by high-bandwidth backbone network for high-rate streaming, the WSN remains the bottleneck due to the low-rate radios used and the effects of wireless interferences. First, we propose a technique...
Recent development of wireless sensor networks (WSN) has led to the appearance of many application specific communication protocols which must be energy-efficient. Among those protocols developed for WSN, LEACH (low energy adaptive clustering hierarchy) protocol is one of the most promising protocols. In this paper, a novel self-organizing energy efficient hybrid protocol based on LEACH is presented,...
Wireless sensor networks consist of large number of sensor nodes which have a constraint energy capacity, How to improve reliability transmission and prolong networks lifespan is very importance subject for wireless sensor networks. This paper firstly makes a summary to power control and the existing routing metrics then finds the several key characteristics of wireless sensor networks communication...
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