面向机会网络的自适应冗余副本删除机制

机会网络中的节点采用泛洪机制转发确认消息以删除冗余副本,此种方式开销较大.提出一种自适应分发确认消息的机制,综合考虑确认消息跳数、区域消息密度及确认消息历史转发情况3个参数,节点以分布式的方式控制确认消息的分发,以更加有针对性地删除网络中的冗余副本.仿真结果表明,该机制能够有效地转发确认消息,在提高路由性能的同时降低资源的消耗.

Adaptive redundant message deletion mechanism for opportunistic network

The flooding method is utilized to forward the acknowledge message to delete the redundant copies of message. As a result, lots of network resources will be consumed by this kind of operation. A novel message deletion mechanism is proposed in this paper. Taking into account the hop count of ACK message, historical forwarding status and regional message density, the ACK message is forwarded to the nodes in the network with the distributed manner to remove the redundant copies of message reasonably. Simulation results show that the redundant copies of message can be deleted with less ACK message by the proposed mechanism; moreover, the network performance can be improved obviously.