信息中心网络的移动性支持机制研究
发布时间：2018-08-09 15:54
【摘要】：为从根本上解决传统互联网原始设计的市大弊端,国内外学者相继开展了未来互联网理论和技术的研究工作,而具有资源利用率高、网络能耗低、动态性能好等诸多优势的信息中心网络,现已发展成为未来互联网研究领域中认可度最高、潜力最大的网络架构之一。作为一个新兴的网络架构,信息中心网络虽可通过节点对内容的缓存,缓解内容源或用户移动造成的不良影响。但是,在信息中心网络中,内容源或用户移动切换时,仍存在兴趣消息或数据消息丢失,移动切换时延较长,路由可扩展性降低,位置更新开销较大,用户移动切换体验较差,无法提供区分内容的移动性支持等一系列亟待解决的问题。为此,论文在信息中心网络架构下,提出了四种适用于不同移动切换支持需求场景的移动性支持机制,相关的创新工作具体如下：1.为有效解决信息中心网络存在的内容源移动性问题,论文提出了一种基于位置标识的移动性支持机制。该机制可通过扩展兴趣消息和数据消息的消息格式,添加辅助兴趣消息路由寻址的位置标识及与内容存储器结构类似的兴趣存储器,避免内容源移动切换导致的兴趣消息的丢失,缩短内容源移动切换引入的移动切换时延,提高兴趣消息的寻址效率并维护路由的可扩展性。同时,论文在便携终端移动模型的基础上建立了一个内容源移动模型,详细地描述了内容源的移动切换行为,并从理论分析和仿真测试两方面比较了信息中心网络中的各种内容源移动性支持机制。结果表明：基于位置标识的移动性支持机制具有较低的移动切换成本,较小的移动切换时延和较短的内容获取时延。2.为降低内容源移动切换时的能量消耗并节省宝贵的无线链路资源,论文提出了一种基于代理的移动性支持机制。首先,该机制扩展了接入路由器的基本功能,使其始终保持对内容源移动状态的监测,并代替内容源发起移动相关的信令交互流程。如此,内容源无需过多地参与移动支持相关的操作,亦无需在相对匮乏的无线链路上传输与位置更新相关的消息。其次,该机制规范了内容源位置表项的添加、更新与删除原则,可保证内容源位置表项正确地维护内容源的位置信息,并避免过期内容源位置表项浪费有限的存储空间。同时,论文采用流体流移动模型描述了内容源的域内移动切换行为和域间移动切换行为,设计了普适于各类移动性支持机制的三层网络分析模型,并首次从理论分析和仿真测试两方面比较了信息中心网络与现有互联网中的移动性支持机制。结果表明:基于代理的移动性支持机制具有较低的位置更新开销,较小的移动切换时延和较少的丢包数目。此外,论文设计了一种以基于代理的移动性支持机制为基础的子网移动支持方法,使得子网可以作为一个整体在信息中心网络中自由地移动。3.为有效解决信息中心网络存在的用户移动性问题,论文提出了一种基于主动缓存的移动性支持机制。首先,该机制可通过接入路由器主动请求与缓存用户移动切换过程中未能获取的内容,避免用户移动切换导致的数据消息的丢失,缩短用户移动切换引入的移动切换时延,并提高用户的移动切换体验。其次,该机制设计了一种基于链路层有效信息的用户移动切换策略,可为用户确定触发移动切换支持相关进程的适宜时间,并为用户选择即将移动切换至的最佳接入点。同时,论文采用随机路点模型描述了用户的移动切换行为,并首次从理论分析和仿真测试两方面比较了信息中心网络中的各种用户移动性支持机制。结果表明：基于主动缓存的移动性支持机制具有较低的内容获取成本,较高的移动切换收益,较小的移动切换时延和较优的内容获取效率。4.为满足终端对不同类型内容的不同移动切换体验等级需求,论文提出了一种区分内容的移动性支持机制。通过扩展接入路由器的基本功能,修改兴趣消息和数据消息的消息格式,并为不同类型的消息设置不同的转发优先级,该机制可在有效解决信息中心网络存在的用户移动性问题和内容源移动性问题的同时,为不同身份的终端和不同类型的内容提供不同等级的移动切换体验。此外,论文给出了评估系统容量和服务阻塞概率的方法,并以实际数据为基础,分析了终端身份、终端行为和终端能力对上述机制系统容量的影响,以及会话到达速率和终端数目对上述机制服务阻塞概率的影响。最后,论文设计了一种以区分内容的移动性支持机制为基础的QoS支持方法,使得信息中心网络可以为不同的内容提供不同QOS等级的服务。
[Abstract]:In order to fundamentally solve the malpractice of the original design of the traditional Internet, scholars at home and abroad have carried out the research work of the future Internet theory and technology, and have many advantages such as high utilization rate of resources, low energy consumption and good dynamic performance, which have become the highest recognition in the field of Internet research in the future. One of the most potential network architectures. As a new network architecture, the information center network can alleviate the adverse effects of content source or user movement through the caching of the content. However, in the information center network, there is still interest message or data message loss and mobile switching when the content source or user moves handover. Long time delay, lower routing scalability, higher location updating overhead, poor user mobile handoff experience and unable to provide a series of problems to be solved to distinguish the mobility support of the content. Therefore, four kinds of mobility support mechanisms are proposed in the information center network architecture. The following innovations are as follows: 1. in order to effectively solve the problem of content source mobility in the information center network, a mobility support mechanism based on location identification is proposed in this paper. This mechanism can add the location identification and content of the auxiliary interesting message routing addressing by extending the message format of the interest message and the data message. The memory structure is similar to interest memory, which avoids the loss of interest messages caused by the mobile handoff of the content source, shortens the mobile handoff delay introduced by the mobile handoff of the content source, improves the addressing efficiency of the interest message and maintains the scalability of the routing. At the same time, a content source movement is established on the basis of the portable terminal mobile model. The model describes the mobile handover behavior of the content source in detail, and compares various source mobility support mechanisms in the information center network from two aspects of theoretical analysis and simulation test. The results show that the mobility support mechanism based on location identification has lower mobile switching cost, smaller mobile handoff delay and shorter time delay. In order to reduce the energy consumption and save the valuable wireless link resources, the content acquisition delay.2. proposed a mobility support mechanism based on proxy. Firstly, the mechanism extends the basic function of the access router to keep the monitoring of the mobile status of the content source and replace the content source. In this way, the content source does not need to participate in the mobile support related operations too much, and does not need to transmit the message related to the location update in the relatively scarce wireless chain. Secondly, the mechanism standardizes the addition of the content source table items, updates and deletes the principle that the content source location table is properly maintained. At the same time, the paper uses the fluid flow model to describe the mobile handover behavior and the mobile handover behavior in the domain of the content source, and designs a three layer network analysis model which is suitable for various mobility support mechanisms, and the theoretical analysis for the first time. Two aspects of the mobility support mechanism in the information center network and the existing Internet are compared. The results show that the agent based mobility support mechanism has lower location updating overhead, smaller mobile handoff delay and less number of packet loss. In addition, a mobility support mechanism based on agent is set up. Based on the subnet mobile support method, the subnet can freely move.3. as a whole in the information center network to effectively solve the user mobility problem in the information center network. In this paper, a mobility support mechanism based on active caching is proposed. First, the mechanism can be actively requested by the access router. To cache the content that the user can not obtain during the handoff, avoid the loss of the data message caused by the user's mobile handoff, shorten the mobile handoff delay introduced by the user mobile handoff, and improve the user's mobile handoff experience. Secondly, the mechanism designs a user mobile handoff strategy based on the link layer effective information, which can be used as the user. Determine the appropriate time to trigger the mobile handoff to support the related process and select the best access point for the user to switch to. At the same time, the random path point model is used to describe the user's mobile switching behavior, and the user mobility support in the information center network is compared for the first time from two aspects of the theoretical analysis and the simulation test. The results show that the mobility support mechanism based on active caching has a lower cost of content acquisition, higher mobile handoff benefit, smaller mobile handoff delay and better content acquisition efficiency.4. to meet different types of mobile switching experience level requirements for different types of content. Mobility support mechanism, by extending the basic function of the access router, modifying the message format of interest messages and data messages, and setting different forwarding priorities for different types of messages. This mechanism can effectively solve the user mobility and content source mobility problems in the information center network, as well as different identities. The terminal and different types of content provide different levels of mobile switching experience. In addition, the paper gives a method to evaluate the capacity of the system and the probability of service blocking. Based on the actual data, this paper analyzes the effect of terminal identity, terminal behavior and terminal capability on the system capacity of the system, and the rate of arrival and the number of terminals. In the end, a QoS support method based on the mobility support mechanism of the content differentiation is designed, which enables the information center network to provide different QOS levels of service for different content.
【学位授予单位】：北京交通大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：TP393.02
本文编号：2174588
[Abstract]:In order to fundamentally solve the malpractice of the original design of the traditional Internet, scholars at home and abroad have carried out the research work of the future Internet theory and technology, and have many advantages such as high utilization rate of resources, low energy consumption and good dynamic performance, which have become the highest recognition in the field of Internet research in the future. One of the most potential network architectures. As a new network architecture, the information center network can alleviate the adverse effects of content source or user movement through the caching of the content. However, in the information center network, there is still interest message or data message loss and mobile switching when the content source or user moves handover. Long time delay, lower routing scalability, higher location updating overhead, poor user mobile handoff experience and unable to provide a series of problems to be solved to distinguish the mobility support of the content. Therefore, four kinds of mobility support mechanisms are proposed in the information center network architecture. The following innovations are as follows: 1. in order to effectively solve the problem of content source mobility in the information center network, a mobility support mechanism based on location identification is proposed in this paper. This mechanism can add the location identification and content of the auxiliary interesting message routing addressing by extending the message format of the interest message and the data message. The memory structure is similar to interest memory, which avoids the loss of interest messages caused by the mobile handoff of the content source, shortens the mobile handoff delay introduced by the mobile handoff of the content source, improves the addressing efficiency of the interest message and maintains the scalability of the routing. At the same time, a content source movement is established on the basis of the portable terminal mobile model. The model describes the mobile handover behavior of the content source in detail, and compares various source mobility support mechanisms in the information center network from two aspects of theoretical analysis and simulation test. The results show that the mobility support mechanism based on location identification has lower mobile switching cost, smaller mobile handoff delay and shorter time delay. In order to reduce the energy consumption and save the valuable wireless link resources, the content acquisition delay.2. proposed a mobility support mechanism based on proxy. Firstly, the mechanism extends the basic function of the access router to keep the monitoring of the mobile status of the content source and replace the content source. In this way, the content source does not need to participate in the mobile support related operations too much, and does not need to transmit the message related to the location update in the relatively scarce wireless chain. Secondly, the mechanism standardizes the addition of the content source table items, updates and deletes the principle that the content source location table is properly maintained. At the same time, the paper uses the fluid flow model to describe the mobile handover behavior and the mobile handover behavior in the domain of the content source, and designs a three layer network analysis model which is suitable for various mobility support mechanisms, and the theoretical analysis for the first time. Two aspects of the mobility support mechanism in the information center network and the existing Internet are compared. The results show that the agent based mobility support mechanism has lower location updating overhead, smaller mobile handoff delay and less number of packet loss. In addition, a mobility support mechanism based on agent is set up. Based on the subnet mobile support method, the subnet can freely move.3. as a whole in the information center network to effectively solve the user mobility problem in the information center network. In this paper, a mobility support mechanism based on active caching is proposed. First, the mechanism can be actively requested by the access router. To cache the content that the user can not obtain during the handoff, avoid the loss of the data message caused by the user's mobile handoff, shorten the mobile handoff delay introduced by the user mobile handoff, and improve the user's mobile handoff experience. Secondly, the mechanism designs a user mobile handoff strategy based on the link layer effective information, which can be used as the user. Determine the appropriate time to trigger the mobile handoff to support the related process and select the best access point for the user to switch to. At the same time, the random path point model is used to describe the user's mobile switching behavior, and the user mobility support in the information center network is compared for the first time from two aspects of the theoretical analysis and the simulation test. The results show that the mobility support mechanism based on active caching has a lower cost of content acquisition, higher mobile handoff benefit, smaller mobile handoff delay and better content acquisition efficiency.4. to meet different types of mobile switching experience level requirements for different types of content. Mobility support mechanism, by extending the basic function of the access router, modifying the message format of interest messages and data messages, and setting different forwarding priorities for different types of messages. This mechanism can effectively solve the user mobility and content source mobility problems in the information center network, as well as different identities. The terminal and different types of content provide different levels of mobile switching experience. In addition, the paper gives a method to evaluate the capacity of the system and the probability of service blocking. Based on the actual data, this paper analyzes the effect of terminal identity, terminal behavior and terminal capability on the system capacity of the system, and the rate of arrival and the number of terminals. In the end, a QoS support method based on the mobility support mechanism of the content differentiation is designed, which enables the information center network to provide different QOS levels of service for different content.
【学位授予单位】：北京交通大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：TP393.02
【相似文献】
中国期刊全文数据库 前10条
1 何宝宏;;从固定互联网到移动互联网[J];信息通信技术;2010年04期
2 林珂;钟文涛;;下一代网络终端移动性解决方案分析[J];移动通信;2007年Z1期
3 应俊,管文明,刘雪艳;TCP移动性支持方案的研究[J];现代电子技术;2004年12期
4 李秀丽;段韵;田景文;;一种移动计算中移动性支持跨层优化方案[J];微计算机信息;2008年01期
5 张q ;彭绯;钱德沛;;基于S-MAC的主动式的移动性支持机制[J];航空科学技术;2010年04期
6 刘涛,孙学军,何丕廉;未来因特网的移动性支持[J];计算机应用研究;2004年01期
7 林庆维,邓建宇,凌力;MPLS区分业务及移动性支持的综合实现[J];计算机工程与设计;2005年05期
8 张建伟;王卫卫;;UDP实现基于标识的终端移动性支持方案[J];通信技术;2008年12期
9 周谨,李建军,郭世满;无线ATM/IPOA的移动性支持[J];邮电商情;1999年12期
10 关建峰;周华春;延志伟;秦雅娟;张宏科;;基于多接口NEMO的移动性支持方案[J];铁道学报;2009年05期
中国重要会议论文全文数据库 前2条
1 韩朝刚;宋俊德;宋美娜;;VoWLAN On the WLAN-3G IMS Integrated Network[A];2006北京地区高校研究生学术交流会——通信与信息技术会议论文集（上）[C];2006年
2 唐浩;;移动IPv6技术发展及应用展望[A];下一代互联网与应用研讨会论文集[C];2011年
中国重要报纸全文数据库 前1条
1 李瀛寰;UMB:超移动宽带并行6大应用[N];中国计算机报;2007年
中国博士学位论文全文数据库 前2条
1 饶迎;信息中心网络的移动性支持机制研究[D];北京交通大学;2016年
2 延志伟;基于MIPv6/PMIPv6的移动性支持关键技术研究[D];北京交通大学;2011年
中国硕士学位论文全文数据库 前2条
1 周子健;命名数据网络下的移动性支持和数据同步应用[D];中国科学技术大学;2015年
2 徐忠;基于i3网络移动性支持及其性能改进[D];电子科技大学;2008年
，本文编号：2174588
本文链接：https://www.wllwen.com/shoufeilunwen/xxkjbs/2174588.html
