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arXiv cs/0307012cs.NI
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Ad Hoc网络中基于观测的协作执行

Observation-based Cooperation Enforcement in Ad Hoc Networks

Sorav Bansal, Mary Baker

摘要:

Ad hoc网络依赖于参与网络的节点之间的协作来为彼此转发分组。节点可以决定不合作以节省其资源,同时仍然使用网络来中继其业务。如果太多的节点表现出这种行为,网络性能会下降,合作节点可能会发现自己的负载不公平。以前大多数对抗这种行为的努力都依赖于节点之间的进一步合作,以交换有关其他节点的信誉信息。如果一个节点观察到另一个节点没有正确参与,它会将此观察报告给其他节点,然后其他节点采取行动以避免受到影响,并可能通过拒绝转发其流量来惩罚坏节点。不幸的是,这种二手信誉信息容易受到虚假指控,并且需要与其他节点保持信任关系。OCEAN的目标是避免这种信任管理机制,并看看我们可以通过直接观察其他节点的行为来了解多远。我们发现,在许多情况下,OCEAN可以做得和需要二手信誉交换的方案一样好,甚至更好。这个令人鼓舞的结果可能有助于在某些情况下解决需要信任管理的问题。

英文摘要:

Ad hoc networks rely on the cooperation of the nodes participating in the network to forward packets for each other. A node may decide not to cooperate to save its resources while still using the network to relay its traffic. If too many nodes exhibit this behavior, network performance degrades and cooperating nodes may find themselves unfairly loaded. Most previous efforts to counter this behavior have relied on further cooperation between nodes to exchange reputation information about other nodes. If a node observes another node not participating correctly, it reports this observation to other nodes who then take action to avoid being affected and potentially punish the bad node by refusing to forward its traffic. Unfortunately, such second-hand reputation information is subject to false accusations and requires maintaining trust relationships with other nodes. The objective of OCEAN is to avoid this trust-management machinery and see how far we can get simply by using direct first-hand observations of other nodes' behavior. We find that, in many scenarios, OCEAN can do as well as, or even better than, schemes requiring second-hand reputation exchanges. This encouraging result could possibly help obviate solutions requiring trust-management for some contexts.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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