计算机对等网(peer-to-peer,P2P)是目前流行于国际网络技术研究领域的一种新兴网络模型。作为真正的分布式计算技术,P2P技术将对Internet的发展产生重要的影响。针对最近热门的基于P2P技术的搜索技术的迅速发展,为改善现有IP电话模型中...计算机对等网(peer-to-peer,P2P)是目前流行于国际网络技术研究领域的一种新兴网络模型。作为真正的分布式计算技术,P2P技术将对Internet的发展产生重要的影响。针对最近热门的基于P2P技术的搜索技术的迅速发展,为改善现有IP电话模型中的诸多不足之处,介绍了对等域名服务(peer name service,PNS)搜索机制及其特点;分析了PNS搜索机制设计的核心;提出了一种基于PNS搜索机制的IP电话模型,并详细讨论了该模型的信息模型和搜索策略。展开更多
In peer-assisted streaming network, service provider needs to pre-pushing resources to some users for caching. This scheme can increase the resource availability. In traditional strategy, in order to guarantee the use...In peer-assisted streaming network, service provider needs to pre-pushing resources to some users for caching. This scheme can increase the resource availability. In traditional strategy, in order to guarantee the user＇s quality of service （QoS）, the pre-pushing action can only start at the time point that the certain user has not used the computer for more than 20 minutes. If the user comes back, the pre-pushing action will be stopped. We claim that this is not an efficient scheme. In this paper, we propose a novel pre-pushing scheme to improve the pre-pushing efficiency, while meeting the user＇s QoS requirements. The basic idea is using the user＇s available bandwidth as much as possible in the condition of meeting the user＇s QoS requirements. Then we design an available bandwidth calculating strategy. The numerical simulation demonstrates that our proposed scheme outperforms the traditional one.展开更多
文摘计算机对等网(peer-to-peer,P2P)是目前流行于国际网络技术研究领域的一种新兴网络模型。作为真正的分布式计算技术,P2P技术将对Internet的发展产生重要的影响。针对最近热门的基于P2P技术的搜索技术的迅速发展,为改善现有IP电话模型中的诸多不足之处,介绍了对等域名服务(peer name service,PNS)搜索机制及其特点;分析了PNS搜索机制设计的核心;提出了一种基于PNS搜索机制的IP电话模型,并详细讨论了该模型的信息模型和搜索策略。
基金the National Natural Science Foundation of China under Grant No.61202079,61308018，the China Postdoctoral Science Foundation under Grant No.2014T70031，the Fundamental Research Funds for the Central Universities under Grant No.FRF-TP-14-046A2
文摘In peer-assisted streaming network, service provider needs to pre-pushing resources to some users for caching. This scheme can increase the resource availability. In traditional strategy, in order to guarantee the user＇s quality of service （QoS）, the pre-pushing action can only start at the time point that the certain user has not used the computer for more than 20 minutes. If the user comes back, the pre-pushing action will be stopped. We claim that this is not an efficient scheme. In this paper, we propose a novel pre-pushing scheme to improve the pre-pushing efficiency, while meeting the user＇s QoS requirements. The basic idea is using the user＇s available bandwidth as much as possible in the condition of meeting the user＇s QoS requirements. Then we design an available bandwidth calculating strategy. The numerical simulation demonstrates that our proposed scheme outperforms the traditional one.
