链路可靠性关系认知DTN无线中继组播路由

摘要

Cognitive radio hoc Ad networks (CAN) can be considered as a special kind of delay tolerant network (DTN),and is composed of two mobile users (SUs) and social characteristics.The intermittent connectivity and how to carry out the reliable and effective messages between SUs and CANs is a challenging problem.This paper proposed a cognitive radio relay multicast routing algorithm based on social relations model.Firstly,the prediction is based on the new social relations perception model of mobile model link reliability and the relationship of SUs routing and relay selection,and according to the different relations of nodes design different forecasting scheme.The message is forwarded to the relay node with the maximum probability of meeting.The evaluation results show that this kind of social relations routing scheme can greatly improve the performance of routing algorithms and can reduce the complexity of network computing.%认知无线电Ad hoc网络(CAN)可看作一类特殊的延迟容忍网络(DTN),并由移动二次用户(SUs)与社会特征组成.网络的间歇连通性和频谱利用率是一个具有挑战性的问题,如何在CANs的SUs之间进行可靠而有效的消息发送.为此,提出一种链路可靠性关系认知DTN无线中继组播路由算法,首先,该预测基于新的社会关系感知移动模型链路可靠性和SUs的关系进行路由融合和中继选择,并根据节点不同关系设计不同的预测方案.消息被转发到与目的地具有最大相遇概率的中继节点.评价结果表明,这种社会关系路由方案可大幅提高路由算法性能,并可降低网络计算复杂度.