中国科学技术大学学报
中國科學技術大學學報
중국과학기술대학학보
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
2012年
10期
854-860
,共7页
动力学模型%P2P文件共享系统%BitTorrent
動力學模型%P2P文件共享繫統%BitTorrent
동역학모형%P2P문건공향계통%BitTorrent
dynamic model%P2P file-sharing system%BitTorrent
针对BitTorrent-like文件共享系统,提出了一个新型动力学模型.新的动力学模型从微观的角度描述了P2P文件共享系统特性,通过采用新的状态去描述系统节点间的交互演化过程.通过该模型,研究了影响系统的诸多因素,主要通过策略因素的形式来体现,其中包括节点选择策略、文件片选择策略、带宽分配策略和节点阻塞策略.最后,通过实验验证模型的正确性.
針對BitTorrent-like文件共享繫統,提齣瞭一箇新型動力學模型.新的動力學模型從微觀的角度描述瞭P2P文件共享繫統特性,通過採用新的狀態去描述繫統節點間的交互縯化過程.通過該模型,研究瞭影響繫統的諸多因素,主要通過策略因素的形式來體現,其中包括節點選擇策略、文件片選擇策略、帶寬分配策略和節點阻塞策略.最後,通過實驗驗證模型的正確性.
침대BitTorrent-like문건공향계통,제출료일개신형동역학모형.신적동역학모형종미관적각도묘술료P2P문건공향계통특성,통과채용신적상태거묘술계통절점간적교호연화과정.통과해모형,연구료영향계통적제다인소,주요통과책략인소적형식래체현,기중포괄절점선택책략、문건편선택책략、대관분배책략화절점조새책략.최후,통과실험험증모형적정학성.
A dynamic model of BitTorrent-like P2P file-sharing systems was proposed.The model describes the P2P file-sharing system in the microcosmic view by defining a novel state,which is used to describe the evolution of the interaction between peers of the system.Through the model,the factors that influence the system were studied.These factors are embodied in the central policies of the system.These policies include peer selection policy,piece selection policy,bandwidth allocation policy and peer choking policy.Finally,some experiments were carried out to validate the model.