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针对移动自组网因单向链路以及盲目转播网关发现分组而造成的与Internet互联性能下降,提出了一种增强型互联方案.同时结合了先应和后应网关发现策略优点的混合网关发现策略被用来获取良好的Internet连接并保持低开销.而通过交换携带有额外增加的对称邻居节点列表和非对称邻居节点列表字段的AODV hello分组,单向链路得以从路由计算中予以清除而广播风暴也同时得到抑制.基于ns-2的仿真结果表明此改进型Internet连接方案在单向链路数量及节点移动速度均变化的应用环境下能取得较其他方案为优的互联性能.
Aiming at the loss of interoperability with Internet caused by unidirectional link and blindcasting gateway discovery packet in mobile ad hoc network, an enhanced interconnection scheme is proposed.Meanwhile, a hybrid gateway discovery combining the advantages of first and second gateway discovery strategies is proposed Policy is used to obtain a good Internet connection with low overhead while the unidirectional link is cleared from routing calculations by exchanging AODV hello packets carrying an additional list of symmetric neighbor nodes and asymmetric neighbor nodes Broadcast storms are also suppressed at the same time.The simulation results based on ns-2 show that the improved Internet connection scheme can achieve better interconnection performance than other schemes under the application environment where the number of unidirectional links and the node moving speed are all changed.