摘要
针对延迟容忍社会性网络存在多个社会子区域的情况,提出了一种基于链路代价综合评估和转发限制的路由算法SECMR。算法定义了节点社会性状态参数,使用IPMM与RWP相结合的移动模型来模拟延迟容忍社会性网络中节点的运动规律,并设置域内转发限制参数SOC_CST,避免大量域间数据在活跃节点处的拥塞。仿真结果表明,SECMR对延迟容忍社会性网络具有较强的适应性;与Prophet及MEED路由协议相比,在增加少量资源开销的前提下,数据分组投递率分别提升了15%与20%,平均传输时延分别降低了9%与12%。
A routing protocol SECMR based on synthetical estimation of contact metrics and forwarding constraint is proposed when there exist several social sub-regions constituting delay tolerant social network. By defining the social state parameter of nodes, the proposed SECMR characterizes the motion of nodes using movement model, which combines Integrated Product Meta Model （IPMM） and Random Waypoint （RWP） model, while intra-region forward constrained factor SOC_ CST is introduced to avoid data congestion in active nodes. Simulation shows that SECMR strongly accommodates social Delay Tolerant Network （DTN）. Compared to the performances of Prophet and MEED, massage delivery is improved by 15% and 20%, average transmission delay is improved by 9% and 12% with a small increase in resource overhead.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2013年第4期1082-1090,共9页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(60902049
61170275
60973111)
国家科技重大专项项目(2010ZX03007-003-04
2011ZX03001-005-02)
关键词
通信技术
延迟容忍网络
社会区域
链路代价综合评估
转发限制
communication
delay tolerant network
social region
synthetical estimation of contact metrics
forwarding constraint
