CAJ | 학술논문

高效的缓存管理策略能够有效提高机会网络中节点的缓存资源利用率。消息的投递概率直接决定了消息的转发与存储必要性，该文提出一种带有消息投递概率估计的自适应缓存管理策略，通过构建节点连接状态分析模型，以分布式的方式感知节点服务能力，从而估计消息的投递概率，进而确定消息的转发与删除优先级，以执行缓存管理相关操作。结果表明，所提出的缓存管理策略可降低网络负载57%，并有效提高消息的成功投递率，降低消息的平均投递时延。
고효적완존관리책략능구유효제고궤회망락중절점적완존자원이용솔。소식적투체개솔직접결정료소식적전발여존저필요성，해문제출일충대유소식투체개솔고계적자괄응완존관리책략，통과구건절점련접상태분석모형，이분포식적방식감지절점복무능력，종이고계소식적투체개솔，진이학정소식적전발여산제우선급，이집행완존관리상관조작。결과표명，소제출적완존관리책략가강저망락부재57%，병유효제고소식적성공투체솔，강저소식적평균투체시연。
The buffer resource utilization in opportunistic networks can be improved by efficient buffer management strategy. The delivery probability of message is directly related to its necessity of forwarding and buffering. An adaptive buffer management strategy with message delivery probability estimating method is proposed. Through establishing the node connection status analysis model, the diversity of node service ability could be evaluated. Accordingly, to estimate the delivery probability of the message. Furthermore, the transmitting and removing priority could be determined reasonably to perform buffer management operations. Numerical results show that overhead ratio can be reduced about 57% by the proposed buffer management strategy. The delivery ratio is improved and the delivery latency is reduced efficiently.