An accurate detection scheme for selfish nodes in wireless Ad Hoc networks

作者：Du Jun^*; Li Weihua; Zhang Kewang; Jiang Weihua

来源：Journal of Xi'an Jiaotong University, 2010, 44(8): 25-29.

• Acknowledgement packets
• Data packet
• Detection accuracy
• Detection scheme
• False detections
• Faulty node
• Neighboring nodes
• Relay node
• Relay packets
• Selfish node
• Simulation result
• Wireless transceiver

Existing detection schemes for selfish nodes are inefficient since they can not distinguish selfish nodes from faulty nodes accurately and the false detection rates of these schemes are high. A novel detection scheme for selfish nodes named accurate selfish node detection (ASD) is proposed. The scheme uses SINR model of wireless transceivers, and is based on the character that ad hoc networks are usually densely deployed. Nodes with higher SINR are selected as agents to monitor the relay nodes so that selfish nodes can be detected precisely and can be distinguished from faulty nodes accurately. Based on the facts that selfish nodes send their own packets but deny to relay packets from its neighboring nodes and that faulty nodes never transmit their own packets the ASD is able to distinguish selfish nodes from faulty nodes. There are two types of selfish nodes, some selfish nodes deny to forward data packets, while others deny to reply acknowledgement packets to its neighboring nodes. The ASD can distinguish these two types of selfish nodes precisely. Simulation results and comparisons with the existing detection schemes show that the average false detection rate is reduced by 31% and the average accuracy of detection is raised by 12%.

• 出版日期2010