摘要
Designing reliability differentiated services for missions with different reliability requirements has become a hot topic in wireless sensor networks.Combined with a location-based routing mechanism,a quantified model without full network topology is proposed to evaluate reliability.By introducing a virtual reference point,the data transfer is limited in a specified area.The reliability function of the area is given.A detailed analysis shows that the function increases quadratically with the distance between the source node and the reference node.A reliability differentiated service mechanism is then proposed.The simulation results show the efficiency of the proposed mechanism.
基金
supported by the National Hi-Tech Research and Development Program of China (Nos.2007AA01Z429,2007AA01Z405)
the National Natural Science Foundation of China (Grant Nos.60633020,60573036,60702059,60503012,90204012,and 60803151)
the Scientific and Technical Key Program of Tianjin (No.06YFGZGX17500).
