Directed diffusion for wireless sensor networking
IEEE/ACM Transactions on Networking (TON)
A real-time and reliable transport (RT) 2 protocol for wireless sensor and actor networks
IEEE/ACM Transactions on Networking (TON)
An Energy-Efficient Waiting Caching Algorithm in Wireless Sensor Networks
EUC '08 Proceedings of the 2008 IEEE/IFIP International Conference on Embedded and Ubiquitous Computing - Volume 01
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Wireless sensor network (WSN) consists of tiny sensor nodes with sensing, computation and wireless communication capabilities. These nodes are usually small in size with limited processing power, limited memory and limited energy source. The sensor node captures information which is very critical in nature. Due to this reliable communication is expected. For end to end reliability ACK/NACK packets are used at transport layer and recovery of lost data packets is done by retransmission which leads to congestion. So WSN applications require a congestion control mechanism to regulate the amount of traffic injected within the WSN to avoid packet loss and to guarantee end-to-end reliable packet delivery. Unless the congestion is detected and an appropriate avoidance technique is adopted, a significant amount of packet loss takes place. This further necessitates packet retransmission and causes a significant amount of energy loss. Therefore, energy management in each node is a very critical issue that deeply affects the system design. So energy efficient protocols are expected at every layer. Diversity Coded Directed Diffusion protocol uses secondary receivers i.e. Prongs for energy efficient transmission. Long observation is fragmented. Each fragment takes different path to sink via prongs which conserves energy consumption. Reliability is achieved using encoding and decoding.