为了更好地解决延迟容忍移动无线传感器网络(Delay Tolerant Mobile Sensor Network,DTMSN)中的数据收集问题,提出了一种基于节点优先级的数据转发策略NPD(Node Priority Data Delivery Scheme)。NPD根据计算得出的各节点不同的转发优...为了更好地解决延迟容忍移动无线传感器网络(Delay Tolerant Mobile Sensor Network,DTMSN)中的数据收集问题,提出了一种基于节点优先级的数据转发策略NPD(Node Priority Data Delivery Scheme)。NPD根据计算得出的各节点不同的转发优先级作为消息传输时选择下一跳的依据。为优化消息复本管理,NPD采用动态消息队列,并根据消息的生存时间决定消息的丢弃原则。仿真实验表明,与现有的几种DTMSN数据传输算法相比,NPD有更高的数据传输成功率与更小的传输延迟,并具有相对较长的网络寿命。展开更多
Identity-based cryptography (IBC) has drawn a lot of attentions in delay tolerant environment. However, the high computational cost of IBC becomes the most critical issue in delay tolerant mobile sensor network (DT...Identity-based cryptography (IBC) has drawn a lot of attentions in delay tolerant environment. However, the high computational cost of IBC becomes the most critical issue in delay tolerant mobile sensor network (DTMSN) because of the limited processing power. In this paper, an efficient identify-based signature scheme with batch authentication (ISBA) is proposed for DTMSN. ISBA designs an online/offline signature with batch authentication to reduce the computational cost, and improves data delivery mechanism to increase the number of messages for each batch authentication. Simulation results show that ISBA not only realizes a lower computational cost than existed schemes, but also does not induce negative impact on the delivery performance.展开更多
The two-phase replication-based routing has great prospects for Delay Tolerant Mobile Sensor Network (DTMSN) with its advantage of high message delivery ratio, but the blind spraying and the low efficiency forwarding ...The two-phase replication-based routing has great prospects for Delay Tolerant Mobile Sensor Network (DTMSN) with its advantage of high message delivery ratio, but the blind spraying and the low efficiency forwarding algorithm directly influences the overall network performance. Considering the characteristic of the constrained energy and storage resources of sensors, we propose a novel two-phase multi-replica routing for DTMSN, called Energy-Aware Sociality-Based Spray and Search Routing (ESR), which implements the quota-style message replication mechanism by utilizing the energy and speed information of sensors. In addition, based on the difference of history encounters, a sociality metric is defined to improve the forwarding efficiency in search phase. Simulation experiments show that ESR can reduce the message delay and improve the resource utilization while maximizing the message delivery ratio compared with the exiting popular two-phase routing protocols.展开更多
分析现有经典延迟容忍移动无线传感器网络DTMSN(Delay Tolerant Mobile Sensor Networks)数据收集算法。提出了一种基于选择复制的动态数据传输策略ASRAD(Advanced Selective Replication based Adaptive Data Delivery Scheme)。其基...分析现有经典延迟容忍移动无线传感器网络DTMSN(Delay Tolerant Mobile Sensor Networks)数据收集算法。提出了一种基于选择复制的动态数据传输策略ASRAD(Advanced Selective Replication based Adaptive Data Delivery Scheme)。其基本思想是把数据消息动态的复制给更有可能与汇聚点通信的传感器节点以达到尽量增大传输成功率和降低传输能耗的目的。ASRAD由数据传输和队列管理两个主要部分组成。展开更多
为更好解决延迟容忍移动无线传感器网络(delay tolerant mobile sensor network,DTMSN)中的数据收集及转发问题,提出了一种基于节点综合状态的数据转发策略NCSD(Node Comprehensive State Data Delivery Scheme)。NCSD根据模糊综合决策...为更好解决延迟容忍移动无线传感器网络(delay tolerant mobile sensor network,DTMSN)中的数据收集及转发问题,提出了一种基于节点综合状态的数据转发策略NCSD(Node Comprehensive State Data Delivery Scheme)。NCSD根据模糊综合决策得出各节点的转发优先级作为传输时选择下一跳的依据。为优化消息副本管理,采取动态消息队列,根据消息生存时间决定消息的丢弃原则。仿真实验表明,与现有的数据传输算法相比,NCSD有更高的数据传输成功率与更小的传输延迟,并具有相对较长的网络寿命。展开更多
延迟容忍移动无线传感器网络(delay tolerant mobile sensor network,简称DTMSN)用于广泛数据收集.与传统的传感器网络不同,DTMSN具有节点移动性、间歇连通性并且能够容忍适当的延迟,因此传统传感器网络的数据收集算法不能适用.提出了...延迟容忍移动无线传感器网络(delay tolerant mobile sensor network,简称DTMSN)用于广泛数据收集.与传统的传感器网络不同,DTMSN具有节点移动性、间歇连通性并且能够容忍适当的延迟,因此传统传感器网络的数据收集算法不能适用.提出了一种基于相对距离感知的动态数据传输策略RDAD(relative distance-aware data delivery scheme).RDAD采用传感器节点到汇聚点(sinknode)的相对距离来计算节点传输概率的大小,并以此作为消息(message)传输时选择下一跳的依据.为优化复本管理,RDAD引入消息的生存时间ST(survival time)和消息最大复制数MR(maximal replication)决定队列中消息传递的优先顺序和丢弃原则.模拟实验表明,与现有的几种DTMSN数据传输算法相比,RDAD能够以较低的数据传输能耗和传输延迟获得较高的数据传输成功率,并且具有相对较长的网络寿命.展开更多
提出了一种基于分布式群组移动的事件分类传输策略GMED(distributed group mobility adaptive event delivery).通过有效地发现和利用传感器节点在运动过程中形成的群组,建立基于群组的事件分类传输模型,改善数据传输性能.其中,群组的...提出了一种基于分布式群组移动的事件分类传输策略GMED(distributed group mobility adaptive event delivery).通过有效地发现和利用传感器节点在运动过程中形成的群组,建立基于群组的事件分类传输模型,改善数据传输性能.其中,群组的转发是依据各自与汇聚点的机会概率按照多副本方式进行的;而群内的事件传输则是基于各成员的稳定邻居集建立传输路径,并以单副本方式进行.队列管理则根据事件的优先级决定递交的顺序和丢弃原则.此外,引入冗余副本控制机制,优化副本管理,降低网络负载.模拟实验结果表明,与现有的几种DTMSN(delay tolerant mobile sensor networks)数据传输算法相比,GMED能以较低的数据传输能耗和传输延迟获得较高的数据传输成功率,且网络寿命相对较长.展开更多
延迟容忍移动无线传感器网络DTMSN(Delay Tolerant Mobile Sensor Networks)用于广泛数据收集,传统传感器网络的数据收集方法在DTMSN中并不适用。为此研究了DTMSN的特性,分析了目前常用的几种DTMSN路由算法的特点,并通过详细的仿真实验...延迟容忍移动无线传感器网络DTMSN(Delay Tolerant Mobile Sensor Networks)用于广泛数据收集,传统传感器网络的数据收集方法在DTMSN中并不适用。为此研究了DTMSN的特性,分析了目前常用的几种DTMSN路由算法的特点,并通过详细的仿真实验给出了这几种算法的性能指标,如数据的平均传输成功率,传输能耗、传输延迟及网络寿命。展开更多
针对容迟移动传感器网络(Delay Tolerant Mobile Sensor Network,DTMSN)网络的容迟及节点的移动性特点,提出了一种新的基于概率预测的能量均衡组播路由算法(Energy-balanced Multicast Routing based Probability Probabilistic,EMRPP)...针对容迟移动传感器网络(Delay Tolerant Mobile Sensor Network,DTMSN)网络的容迟及节点的移动性特点,提出了一种新的基于概率预测的能量均衡组播路由算法(Energy-balanced Multicast Routing based Probability Probabilistic,EMRPP)。该算法采用到达概率选择路由下一跳的方式,且考虑了节点能量对算法性能的影响。仿真结果表明,EMRPP算法在数据传输率和平均传输延迟方面的性能要优于改进之前的PROPHET算法,是一种有效的容迟移动网络组播路由方案。展开更多
文摘为了更好地解决延迟容忍移动无线传感器网络(Delay Tolerant Mobile Sensor Network,DTMSN)中的数据收集问题,提出了一种基于节点优先级的数据转发策略NPD(Node Priority Data Delivery Scheme)。NPD根据计算得出的各节点不同的转发优先级作为消息传输时选择下一跳的依据。为优化消息复本管理,NPD采用动态消息队列,并根据消息的生存时间决定消息的丢弃原则。仿真实验表明,与现有的几种DTMSN数据传输算法相比,NPD有更高的数据传输成功率与更小的传输延迟,并具有相对较长的网络寿命。
基金supported by the National Natural Science Foundation of China (61070204, 61101108, 61121061)The National S&T Major Program of China (2011ZX03002-005-01)
文摘Identity-based cryptography (IBC) has drawn a lot of attentions in delay tolerant environment. However, the high computational cost of IBC becomes the most critical issue in delay tolerant mobile sensor network (DTMSN) because of the limited processing power. In this paper, an efficient identify-based signature scheme with batch authentication (ISBA) is proposed for DTMSN. ISBA designs an online/offline signature with batch authentication to reduce the computational cost, and improves data delivery mechanism to increase the number of messages for each batch authentication. Simulation results show that ISBA not only realizes a lower computational cost than existed schemes, but also does not induce negative impact on the delivery performance.
基金supported by National Natural Science Foundation of China under Grant No.60802016, 60972010 and No.61100217by China Fundamental Research Funds for the Central Universities under Grant No. 2011JBM002,2011YJS017
文摘The two-phase replication-based routing has great prospects for Delay Tolerant Mobile Sensor Network (DTMSN) with its advantage of high message delivery ratio, but the blind spraying and the low efficiency forwarding algorithm directly influences the overall network performance. Considering the characteristic of the constrained energy and storage resources of sensors, we propose a novel two-phase multi-replica routing for DTMSN, called Energy-Aware Sociality-Based Spray and Search Routing (ESR), which implements the quota-style message replication mechanism by utilizing the energy and speed information of sensors. In addition, based on the difference of history encounters, a sociality metric is defined to improve the forwarding efficiency in search phase. Simulation experiments show that ESR can reduce the message delay and improve the resource utilization while maximizing the message delivery ratio compared with the exiting popular two-phase routing protocols.
文摘分析现有经典延迟容忍移动无线传感器网络DTMSN(Delay Tolerant Mobile Sensor Networks)数据收集算法。提出了一种基于选择复制的动态数据传输策略ASRAD(Advanced Selective Replication based Adaptive Data Delivery Scheme)。其基本思想是把数据消息动态的复制给更有可能与汇聚点通信的传感器节点以达到尽量增大传输成功率和降低传输能耗的目的。ASRAD由数据传输和队列管理两个主要部分组成。
文摘为更好解决延迟容忍移动无线传感器网络(delay tolerant mobile sensor network,DTMSN)中的数据收集及转发问题,提出了一种基于节点综合状态的数据转发策略NCSD(Node Comprehensive State Data Delivery Scheme)。NCSD根据模糊综合决策得出各节点的转发优先级作为传输时选择下一跳的依据。为优化消息副本管理,采取动态消息队列,根据消息生存时间决定消息的丢弃原则。仿真实验表明,与现有的数据传输算法相比,NCSD有更高的数据传输成功率与更小的传输延迟,并具有相对较长的网络寿命。
文摘提出了一种基于分布式群组移动的事件分类传输策略GMED(distributed group mobility adaptive event delivery).通过有效地发现和利用传感器节点在运动过程中形成的群组,建立基于群组的事件分类传输模型,改善数据传输性能.其中,群组的转发是依据各自与汇聚点的机会概率按照多副本方式进行的;而群内的事件传输则是基于各成员的稳定邻居集建立传输路径,并以单副本方式进行.队列管理则根据事件的优先级决定递交的顺序和丢弃原则.此外,引入冗余副本控制机制,优化副本管理,降低网络负载.模拟实验结果表明,与现有的几种DTMSN(delay tolerant mobile sensor networks)数据传输算法相比,GMED能以较低的数据传输能耗和传输延迟获得较高的数据传输成功率,且网络寿命相对较长.
文摘延迟容忍移动无线传感器网络DTMSN(Delay Tolerant Mobile Sensor Networks)用于广泛数据收集,传统传感器网络的数据收集方法在DTMSN中并不适用。为此研究了DTMSN的特性,分析了目前常用的几种DTMSN路由算法的特点,并通过详细的仿真实验给出了这几种算法的性能指标,如数据的平均传输成功率,传输能耗、传输延迟及网络寿命。
文摘针对容迟移动传感器网络(Delay Tolerant Mobile Sensor Network,DTMSN)网络的容迟及节点的移动性特点,提出了一种新的基于概率预测的能量均衡组播路由算法(Energy-balanced Multicast Routing based Probability Probabilistic,EMRPP)。该算法采用到达概率选择路由下一跳的方式,且考虑了节点能量对算法性能的影响。仿真结果表明,EMRPP算法在数据传输率和平均传输延迟方面的性能要优于改进之前的PROPHET算法,是一种有效的容迟移动网络组播路由方案。