共查询到20条相似文献,搜索用时 15 毫秒
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Multimedia Tools and Applications - In this paper, we propose a cooperative caching scheme for multimedia data via clusters based on peers connectivity in mobile P2P networks. In the proposed... 相似文献
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Peer-to-Peer Networking and Applications - In the mobile cloud environment, the information retrieval system based on the P2P is very important. In case of an information search that is not... 相似文献
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Kim Kapsu Hong Myunghui Chung Kyungyong Oh SangYeob 《Peer-to-Peer Networking and Applications》2015,8(4):610-619
Peer-to-Peer Networking and Applications - It is a very difficult task to estimate abnormal objects and analyze reliability in peer-to-peer (P2P) networks. In the P2P network environment,... 相似文献
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P2P作为当前研究的一个热点方向,吸引了众多研究者和机构的注意力.P2P技术在移动网络上的应用,由于移动网络的受限特点,决定了其设计原则有别于其它网络,而在其它网络结构中运行良好的技术并不一定适合于移动P2P网络.综述和探讨了在不同移动环境下构建P2P网络将面临的一些主要问题,包括移动P2P的体系结构、路由协议及网络安全等问题. 相似文献
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Shin Jungpil Islam Md Rashedul Rahim Md Abdur Mun Hyung-Jin 《Peer-to-Peer Networking and Applications》2020,13(2):635-646
Peer-to-Peer Networking and Applications - User authentication has become an essential security element that enables a wide range of applications in P2P systems for higher security and safety... 相似文献
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Multimedia Tools and Applications - For Peer to Peer (P2P) live streaming media, the peer coordination control mechanism becomes complex under dynamic traffic fluctuation, different node distance... 相似文献
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Miguel Eliseu C. Silva Cristiano M. Coelho Fernando C. Cunha Ítalo F. S. Campos Sérgio V. A. 《Multimedia Tools and Applications》2021,80(13):20255-20282
Multimedia Tools and Applications - P2P live streaming requires low latency and low media discontinuity to provide users good quality of experience. When peers are connected to a large number of... 相似文献
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校园内无线网络的普遍使用与移动设备性能的快速发展,使移动P2P技术得到了更多的关注。但当前对移动对等网络的研究还缺乏统一而明确的定义,还存在很多未能很好地解决的问题。文中的研究目的是如何有效组织移动节点,进行资源交换。针对校园无线网络环境,提出了一种基于分区模型的移动P2P网络结构。对节点历史行为统计,计算节点性能值。并利用分区网络模型和机会路由的思想提出了一种改进路由算法,实现区域内和区域间路由转发,降低了路由开销,提高了网络性能。 相似文献
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随着移动网络及移动智能终端的发展和日益普及,移动对等(P2P)网络流媒体方面的研究已成为当前的热点。然而,P2P流媒体的移动化面临两大问题,一是流媒体的差异化服务,二是终端移动过程中的服务质量保证。针对终端的差异性,本文提出了自适应多码率服务的思想,在一个P2P节目流拓扑中,发布多个子流,用户根据自己的网络状况和能力,缓冲全部或者部分子流,并根据网络环境的变化,动态地改变自身缓冲和播放的流,为邻居节点提供差异化的服务;同时提出了一种跨域移动服务质量保证机制,包括数据预缓存、数据暂存等策略。实验证明上述方法能有效提高移动对等直播流媒体系统的服务质量。 相似文献
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Lidan Shou Xiaolong Zhang Ping Wang Gang Chen Jinxiang Dong 《Information Sciences》2011,181(13):2841-2857
Nowadays, as the mobile services become widely used, there is a strong demand for mobile support in P2P search techniques. In this paper, we introduce a new cost model for searching multi-dimensional data in mobile P2P environment and propose a novel multi-dimensional mobile P2P search framework called MIME. MIME models the physical node layout in a two-dimensional plane and keeps records of the locations of the nodes to construct a proximity-aware P2P overlay. MIME is able to employ two different split schemes for the construction of the overlay. We propose query processing techniques for such P2P overlay. In addition, we employ a novel expanding method for tuning the performance of KNN queries in MIME. We also discuss two adaptive features incorporated into MIME to support mobility: an update algorithm that makes dynamic updates to the overlay, and a cache mechanism that reduces the load of data migration during the updates. The experimental results show that the proposed techniques are effective, and that MIME achieves significant performance improvements in Point, Range, and KNN queries compared to the conventional system. 相似文献
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Peer-to-Peer Networking and Applications - Peer to Peer (P2P) Wireless Sensor Networks (WSNs) acts as a critical purpose in today’s real-world applications. It contains spatially disseminated... 相似文献
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要:提出一种采用移动P2P Web Service技术的自组网协同通信平台SNCC(Self-organizing Networking Cooperative Communication),目标是利用移动终端天然的分布式特点,通过手机的自组网,支持手机之间的协同通信;为了克服现有移动网络的漫游性,带宽的局限性,通过自组网协同通信控制器,基于目前移动网络支持的网络协议(UDP/TCP),实现针对移动网络的自组网协同通信功能。 相似文献
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基于移动Agent的P2P搜索方法研究 总被引:1,自引:0,他引:1
针对一般P2P网络资源搜索方法的搜索效率低等确定,通过引入移动Agent技术,提出了一种基于移动Agent的新的搜索方法。该搜索方法设计了一个确定Agent数量及路线的算法,并利用其进行资源搜索,通过仿真试验实现该算法,证明该方法能有效提高搜索效率和带宽节约。 相似文献
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提出一种基于移动P2P Web Service的地理信息采集与共享平台MPPWS-GIGS(Mobile P2P Web Service Geography Information Gathering and Sharing),目标是充分利用移动终端天然的分布式特点,支持地理信息的P2P采集和共享功能;为了克服现有移动网络的漫游性、带宽的局限性,通过中心控制服务器,基于目前移动网络支持的网络协议(UDP/TCP),完成针对移动网络的终端管理、会话管理、服务管理等功能。 相似文献
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基于固定网络的信任模型缺乏对网络高度动态性的考虑,不能直接应用于移动P2P网络。本文利用节点的报文转发能力,提出了一种移动P2P环境下的分布式信任模型MobTrust。该模型通过分布式存储机制,将节点转发的评价数据备份于K桶中,扩充了评价数据的存储范围。同时,鉴于移动设备有限的计算能力,设计双反馈机制提高评价数据的可靠性,然后以轻量级的方式计算信任度。仿真结果表明,MobTrust能有效降低系统开销,并拥有较高的评价数据利用率和交易成功率。 相似文献
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Advances in network architecture are changing application and service delivery. The wireless industry, for example, now talks of service grids - collections of separate wireless services collated from across the network. However, with current limitations in mobile device capabilities, a scalable and efficient middleware platform is essential. The authors' new middleware architecture, called scalable inter-grid network adaptation layers (signal), integrates mobile devices with existing grid platforms to conduct peer-to-peer operations through proxy-based systems. Combining mobile P2P applications with grid technologies could ultimately give mobile devices the power of supercomputers. 相似文献
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为解决移动设备异构性影响视频流媒体应用的问题,提出了一种P2P网络移动流媒体的交错分布转码方法.该方法允许多个固定节点为一个移动设备转码,生成多个交错子流给目标移动节点,子流在移动节点上组装,降低了转码对固定节点计算能力的需求.分析了节点失效对分布转码造成的影响,交错子流可以减弱这种影响,强化数据包丢失错误恢复机制.比较了该方法与多描述编码之间的性能差异,实验结果表明,应用该方法移动流媒体在节点失效和不良无线信道条件下鲁棒性好. 相似文献