Coverage control is one of the most fundamental research issues for the deployment and performance of a wireless sensor network(WSN), representing the quality of surveillance that the network can provide. Due to some unique characteristics of WSNs such as energy constraint and ad-hoc topology, the coverage problems in sensor networks have many new scenarios and features that entitle them an important research issue in recent years.

Furthermore, the sensor relocation problem (SR problem) is an important issue in coverage control. The main difference between SR problem and sensor deployment (SD) problem is that SR problem has a strict response time requirement. Because the SD problem occurs during network initialization, so there is no strict response time requirement. The SD problem is solved as long as the required coverage level is met. However, the SR problem occurs during operation of WSNs, we need to minimize the impact on the surveillance task while replacing faulty sensors with redundant sensors.

In this talk, sensor self-relocation problem based on confident information coverage(CIC) model in WSNs is discussed. CIC model has many advantages than disc coverage model, so how to solve SR problem based on CIC model is a promising work. The proposed SR algorithm based on CIC model can achieve shorter response time and longer network lifetime by using cascaded movement to move redundant sensors to faulty sensors and coverage holes.

Location:
Room: AX23A
St Francis Xavier University
Antigonish, Nova Scotia