A Novel, Dynamic Data Dissemination [D3] Technique for Congestion Avoidance/Control in High Speed Wireless Multimedia Sensor Networks

Abstract

Rapid technological advances and innovations in the area of autonomous systems push the researchers towards autonomous networked systems with emphasis on Wireless Sensor Networks (WSNs). In WSN event-driven applications, it is critical to report the detected events in the area, resulting in sudden bursts of traffic due to occurrence of spatially-correlated or multiple events, causing loss of data. Also, nodes have very limited power due to hardware constraints. Packet losses and retransmissions resulting from congestion, cost precious energy and shorten the lifetime of sensor nodes. Till now, in WSNs, Congestion control techniques are based on detection of congestion and recovery, but they cannot eliminate or prevent the occurrence of congestion. Collision is a symptom of congestion in the wireless channel and can result in a timevariant channel capacity. Therefore, this research focuses on an efficient medium access control (MAC) technique to coordinate the access of nodes to the shared medium without interference. It uses the queue buffer length of the sensor nodes to estimate the congestion and then dynamically disseminates the traffic along with classifying them into different priority classes to provide a congestion-free routing path to the destination with improved Quality of Service (QoS)

A High Performance Target Tracing Transmission Model Oriented to Lifecycle Maximization

“…We scale the difference by the standard deviation of energy consumption between and others and obtain the normalized difference. The probability that the normalized difference is greater than is greater than , as shown in formula (12), which means transmission cost is too high when is taken as the relay node, and the reason for that is often due to transmission distance or interference.…”

“…Nowadays facing real-time requirements of the new high speed sensor networks, such as wireless multimedia sensor networks and industrial real-time control, energy conservation cannot meet the needs of practical application completely. The high speed sensor network, as an emerging network, is to advance the traditional sensor network technology in the application of multimedia transmission, and so forth, with higher bandwidth and more computing and processing power, which has become a hotspot in recent years [11,12]. Compared to the traditional networks, the wireless sensor network has a higher demand in aspects of throughput, realtime, computational complexity, power requirements, and so on.…”

A Fuzzy-Based Congestion Controller for Control and Balance Congestion in Gried-Based WSN

“…Proposed approach is efficient in term of Quality of Service (QOS) as it sends data through multipath. Authors in [8] presented a Medium Access Control (MAC) technique to coordinate the access of nodes to the shared medium. It uses the queue buffer length of the sensor nodes to estimate the congestion.…”