摘要
在社区机会网络中由于网络资源的限制,节点的缓存、能量、带宽等属性会严重影响网络的性能。现有的社区机会网络路由算法往往只根据节点的中心性级别来进行副本的分配,而并没有充分考虑上述属性的影响。针对这一问题,提出一种结合节点属性与中心性的路由算法WRACS。该路由算法既考虑了影响节点传输能力的各种属性,又结合了节点的活跃程度。最后通过ONE仿真分析可知,该算法在信息投递率、平均延时和平均缓存时间等性能指标上都体现出良好的性能。
Due to the limitation of the network resources in the community opportunistic network, the node attributes such as energy, buffer and bandwidth will severely affect the performance of the network. The existing routing algorithms in community opportunistic network often choose the centrality nodes to distribute message which don＇ t take the relevant attribute into account. To solve this problem, the routing algorithm of WRACS is proposed which combines the relevant attributes and the centricity of node. The routing algorithm considers the attributes which influence the transmission performance as well as the node activity. Finally, from the simulation software of ONE, it can see that the algorithm performs well in message delivery ratio, the average delivery delay and the average buffer time, etc.
出处
《电视技术》
北大核心
2013年第23期126-129,146,共5页
Video Engineering
基金
国家自然科学基金项目(61071118)
重庆市教委科研项目(KJ110524)
重庆市自然科学基金项目(cstcjjA40039)
重庆邮电大学科研基金项目(A2012-17)
关键词
社区机会网络
属性
中心性
WRACS
community opportunistic network
attributes
centrality
WRACS
