DTN中信息传输采用存储转发模式,当节点缓存受限,在该网络中采用传染路由则节点处易发生拥塞。针对此问题提出一种基于传染路由的拥塞控制策略:当节点缓存完全占用又需存储新分组时,遍历缓存,找出转发次数大于等于N次的分组将其删除;若缓存中没有这样的分组,则删除最后一个存入的分组,缓解拥塞,有效提高了网络各性能。 DTN information transmission using storage and forwarding mode, when the node cache is limited, in the network routing infection is prone to congestion at the node. In order to solve this problem, a congestion control strategy based on infection routing is proposed: when the node cache is completely occupied and a new packet needs to be stored, traversing the buffer to find the packet whose forwarding times is greater than or equal to N times; if there is no such packet in the buffer , Delete the last deposited packet, relieve congestion, effectively improve the performance of the network.