基于动态社会关系的机会路由研究

摘要

In opportunistic networks , the nodes are rational and strongly dynamic , there are selfish nodes that are not willing to share the bandwidth or other resources with others .Aiming at this problem , we propose a routing method which is based on dynamic social relations , namely, SRR.SRR evaluates the social relationship between the nodes in opportunistic networks through physical social relation of nodes and their encountering probability , dynamically updates and calculates the social relationship matrix between the nodes .According to the social relationship matrix , the message source node chooses suitable member node as the relay to deliver messages to the destination node , and avoids in utmost extent the possibility of discarding the massage being passed by the selfish nodes in network .Simulation results show that in opportunistic networks with more selfish nodes , SRR effectively improves the successful message delivery probability than other methods .%针对机会网络节点动态性强、节点理性、存在不愿意共享其带宽或资源的自私节点问题，提出一种基于动态社会关系路由SRR（ Social Relations Routing ）方法，该方法通过节点的物理社会关系、接触概率等来评估机会网络中节点之间的社会关系，动态更新计算节点之间的社会关系矩阵。消息源节点依据社会关系矩阵，选择适合的成员节点作为中间节点向目的节点传递消息，最大可能地避免了网络中自私节点抛弃所转交消息的可能。仿真结果表明，在自私节点较多的机会网络中，该方法较其他方法有效提高了消息成功传递几率。