Abstract
Wireless sensor networks involve low power fixed and mobile nodes with limited energy resources. Lack of resources such as energy and bandwidth, could reduce cooperation between nodes that may lead to lower quality of service parameters. Lack of cooperation would result in not forwarding incoming packets by each node to save its remaining energy. Also, due to inherent characteristics of wireless sensor networks, they are vulnerable to be attacked by malicious or selfish nodes. Trust management methods can be used to deal with such problems by designing a routing protocol that is based on trust and can improve quality of service parameters. In this paper, we utilize a trust management system and provide a method to reduce energy consumption and improve quality of service parameters. We improved packet delivery ratio and the amount of remaining energy in Dynamic Source Routing protocol, while maintaining the end to end delay.
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