摘要
DTMSN中现有基于历史记录路由策略所评估的投递率不能准确反映节点近期投递能力的变化情况.据此,提出一种根据节点能耗和队列占用评估的投递率进行数据包转发决策的路由策略.针对高投递率节点能量消耗过快问题,使用基于信用激励的机制实现投递率和能效的权衡.仿真实验结果表明,采用节点能耗和队列占用评估投递率的路由策略在投递率性能上优于现有的基于历史记录的路由策略,信用激励模型能够在较高投递率的情况下有效控制能量消耗.
The delivery probability calculated by conventional history-based routing scheme in DTMSN can not accurately reflect node＇s recently delivery ability. Aiming at this problem, this paper proposes a routing scheme which use node＇s energy consumption and queue usage to evaluate node＇s recently deliv- ery ability, and make decision on packet forward based on this evaluation. The authors introduce a cred- it-based incentive mechanism to gain tradeoff between message delivery ratio and energy efficiency. Sim- ulation experiment results show that routing scheme use energy consumption and queue usage to evalu- ate node＇s recently delivery ability has better message delivery ratio, and the credit-based incentive mechanism can efficiently control node＇s energy consumption.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第6期1312-1318,共7页
Journal of Sichuan University(Natural Science Edition)
基金
国家自然科学基金(60773168)
四川省科技支撑项目(2010GZ0169)
四川大学青年教师启动基金(2009SCU11031)
关键词
容延迟移动传感器网络
路由策略
信用激励
delay-tolerant mobile sensor network （DTMSN）, routing scheme, credit-based incentive
