An observer-based distributed scheme for selfish-node detection in a post-disaster communication environment using delay tolerant network

摘要: Aftermath of disaster causes severe destruction/damage to physical infrastructures. As a result, communication infrastructure gets disrupted for weeks. In such situations, smart-phone based adhoc opportunistic networks may be set up with the smart-phones carried by relief workers (also referred as nodes) communicate situational information from different affected corners some remote monitoring station. scenario, malicious nodes try intercept and manipulate sensitive data intention corruption fraud. One way preventing is devise an automated mechanism detect avoid during process. Reputation used measure where reputation estimated on their degree cooperation other in network communication. this paper, we propose observer dynamic estimation technique detection selfish group independent roving were introduced monitor behavior volunteer forwarder receiver identify whether node has any group-bias. Observers estimate interaction patterns group-biasness periodically publishes global matrix which select unselfish The performance proposed scheme was evaluated ONE simulator [19].