• Title/Summary/Keyword: peer-to-peer (p2p)

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A Scalable Resource-Lookup Protocol for Internet File System Considering the Computing Power of a Peer (피어의 컴퓨팅 능력을 고려한 인터넷 파일 시스템을 위한 확장성 있는 자원 탐색 프로토콜 설계)

  • Jung Il-dong;You Young-ho;Lee Jong-hwan;Kim Kyongsok
    • Journal of KIISE:Information Networking
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    • v.32 no.1
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    • pp.89-99
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    • 2005
  • Advances of Internet and rC accelerate distribution and sharing of information, which make P2P(Peer-to-Peer) computing paradigm appear P2P computing Paradigm is the computing paradigm that shares computing resources and services between users directly. A fundamental problem that confronts Peer-to-Peer applications is the efficient location of the node that stoles a desired item. P2P systems treat the majority of their components as equivalent. This purist philosophy is useful from an academic standpoint, since it simplifies algorithmic analysis. In reality, however, some peers are more equal than others. We propose the P2P protocol considering differences of capabilities of computers, which is ignored in previous researches. And we examine the possibility and applications of the protocol. Simulating the Magic Square, we estimate the performances of the protocol with the number of hop and network round time. Finally, we analyze the performance of the protocol with the numerical formula. We call our p2p protocol the Magic Square. Although the numbers that magic square contains have no meaning, the sum of the numbers in magic square is same in each row, column, and main diagonal. The design goals of our p2p protocol are similar query response time and query path length between request peer and response peer, although the network information stored in each peer is not important.

A Study on the Key Distribution Protocol for Secure P2P information Security Service (안전한 P2P 정보보호 서비스를 위한 키 분배 프로토콜에 관한 연구)

  • Lee, Jun Seok
    • Journal of Industrial Convergence
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    • v.6 no.1
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    • pp.57-72
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    • 2008
  • In this study, general outline of P2P(peer to peer) application was analyzed dealing with security attacks and threats on the P2P environment. Information security service was studied to provide secure P2P service under the information threats. This study proposes two methods to provide secure information security service. One is a method to use personal firewall software on the peer. The other is a method to use key distribution protocol for confidentiality and integrity.

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An Effective Backtracking Search Algorithm for the P2P Resources (효과적인 역 추적 P2P 자원 검색 알고리즘)

  • Kim, Boon-Hee
    • Journal of the Korea Society of Computer and Information
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    • v.12 no.6
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    • pp.49-57
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    • 2007
  • The P2P distributed systems are proceeded various studies lively to use the idleness computing resources under the network connected computing environments. It's a general mean to communication from the peer of the shortest downloaded time among same target files to be searched. The P2P search algorithms are very important primary factor to decide a real downloaded time in the criteria to select the peer of a shortest downloaded time. However the peer to give resources could be changed into offline status because the P2P distributed systems have very weakness connection. In these cases. we have a choice to retransmit resources mainly. In this study, we suggested an effective backtracking search algorithm to improve the performance about the request to retransmit the resource.

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A Structure of Realtime IPTV Service using Peer-to-Peer Technology (P2P 기술 기반 실시간 IPTV 서비스 구현 구조)

  • Kim, Jae-Hyuk;Kim, Young-Han
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.3B
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    • pp.517-525
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    • 2010
  • The IPTV Service provides various interactive services beyond the level of being able to substitute cable TV. The IPTV system is to be decentralized gradually in which one server conducts all tasks. Primarily, deliberation of media needs to be changed into a system in which relayer and peer from the central server is utilized. Secondarily, the way of controling IPTV network need to be decentralized. Unlike the current client-server system, P2P(Peer To Peer), the main technology of decentralized IPTV is able to provide a service by cooperation of each node. Dealing with live streaming IPTV system which is based on the P2P protocol, this paper design the pure P2P IPTV structure and does verify the performance of P2P IPTV structure by realizing real system.

A Performance Analysis of Mobile P2P Streaming Service on Wireless LAN Environments (무선랜 환경에서 모바일 P2P 스트리밍 서비스의 성능 분석)

  • Choi, Hun-Hoi;Kim, Geun-Hyung
    • Journal of Digital Contents Society
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    • v.14 no.1
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    • pp.25-33
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    • 2013
  • P2P(Peer-to-Peer) architecture can reduce the network bandwidth and resource on the server since peers exchange data chunks with each other, while server-client architecture causes a lot of traffic on the server. Peers receive a data more reliably when the number of participating peer increases. Currently, P2P traffic has accounted for about 65% of the world's Internet traffic and diverse P2P streaming services have launched combining to video streaming technology. However, the requirements and data chunk delivery algorithms for mobile P2P streaming service should be investigated, since the existing P2P technologies have been developed and designed for the wired network. In particular, the bandwidth fluctuation caused by user mobility, wireless packet collisions, and packet losses brings about different problems on the mobile P2P streaming service compared to existing P2P streaming service. In this paper, we analyzed the problem of mobile P2P streaming services in the 802.11n wireless LAN environment through experiments.

A Study on the Control Agent System of P2P Business Model (P2P 비지니스 모델에서의 조정 에이전트 시스템에 관한 연구)

  • Kim, Dong-Hyun;Lee, Sung-Ju
    • Journal of the Korean Institute of Intelligent Systems
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    • v.12 no.1
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    • pp.73-79
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    • 2002
  • At present, most Electronic Commerce System is made mainstream of Server-Client Commerce. For searching goods information, we must entering the EC sites and search that s information. but, P2P(Peer to Peer) System being escape traditional structure, Server-Client, it enable information transact between users, and resolve the problem of network, add-cost of server-ensurance, etc. Also, it is possible to trade information between person to person, client to provide. In this paper, we investigate on-going p2p models and study on the p2p based control based system.

Artificial Intelligence Techniques for Predicting Online Peer-to-Peer(P2P) Loan Default (인공지능기법을 이용한 온라인 P2P 대출거래의 채무불이행 예측에 관한 실증연구)

  • Bae, Jae Kwon;Lee, Seung Yeon;Seo, Hee Jin
    • The Journal of Society for e-Business Studies
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    • v.23 no.3
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    • pp.207-224
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    • 2018
  • In this article, an empirical study was conducted by using public dataset from Lending Club Corporation, the largest online peer-to-peer (P2P) lending in the world. We explore significant predictor variables related to P2P lending default that housing situation, length of employment, average current balance, debt-to-income ratio, loan amount, loan purpose, interest rate, public records, number of finance trades, total credit/credit limit, number of delinquent accounts, number of mortgage accounts, and number of bank card accounts are significant factors to loan funded successful on Lending Club platform. We developed online P2P lending default prediction models using discriminant analysis, logistic regression, neural networks, and decision trees (i.e., CART and C5.0) in order to predict P2P loan default. To verify the feasibility and effectiveness of P2P lending default prediction models, borrower loan data and credit data used in this study. Empirical results indicated that neural networks outperforms other classifiers such as discriminant analysis, logistic regression, CART, and C5.0. Neural networks always outperforms other classifiers in P2P loan default prediction.

Efficient Data Distribution Method in a Wireless P2P Network (무선 P2P 네트워크에서 Peer 사이의 효율적 자료 분배 방법에 대한 연구)

  • Kang, Seung-Seok
    • Journal of the Korea Society for Simulation
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    • v.15 no.4
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    • pp.97-105
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    • 2006
  • Popular content stored within the Internet may be convenient to download via modern 3G connections, but costly due to a fee charged by telecommunication providers on the basis of the amount of data transferred. This paper presents a network in which several mobile devices, called the peers, cooperate to download their assigned portion of the content using a 3G connection in order to reduce the overall cost. Then, the peers exchange their assigned portion of the content with other peers via a wireless ad hoc network and the peers reconstruct the whole content using the exchanged portion. This paper focuses on the per-peer based distribution method, and presents the performance comparison with a similar method, called the per-packet distribution method. Both methods are designed to reduce packet collisions while content is exchanged. The simulation result indicates that the per-peer based method outperforms the per-packet based method, and approximately 90% of the telecommunication cost is saved with as few as 10 peers.

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Session Control Mechanism for Peer-to-Peer IPTV Services (P2P IPTV 서비스를 위한 세션 제어 메카니즘)

  • Park, Seung-Chul
    • The KIPS Transactions:PartC
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    • v.15C no.2
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    • pp.87-92
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    • 2008
  • This paper proposes a session control model for the P2P(Peer to Peer) IPTV(Internet Protocol Television) services and presents the IPTV session control procedures based on the proposed model. Since, while public IPTV traffic is usually processed via a separate network, P2P IPTV traffic is processed together with the conventional Internet access traffic, the P2P IPTV control mechanism needs to provide multi-stream processing for the constituent TPS(Triple Play Service) traffic and corresponding QoS(Quality of Service) control functions. Besides, P2P IPTV session control mechanism should provide appropriate multicast control functions in order to support effective transmission of video traffic generated by personal IPTV broadcasters. The P2P IPTV session control model proposed in this paper is designed to be based on the standard SIP(Session Initiation Protocol), IGMP(Internet Group Management Protocol), and COPS(Common Open Policy Service) protocol so that it can contribute to the easy and prompt deployment of inter-operable P2P IPTV platform.

DRM Enabled P2P Model for Contents Protection (콘텐츠 보호를 위한 DRM이 적용된 P2P 모델)

  • Sung Jae-Youn;Jeong Yeon-Jeong;Yoon Ki-Song
    • The KIPS Transactions:PartC
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    • v.13C no.4 s.107
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    • pp.389-396
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    • 2006
  • P2P(Peer To Peer) system, a most attractive file sharing system, is the largest channel of contents distribution and it takes 50% of network traffic. But P2P systems are infamous for used to illegal contents distribution channel not only in music industry, but also in movie industry. But, DRM(Digital Right Management) enabled P2P models are not suggested until now that interrupting illegal contents distribution and keeping advantage of P2P. So in this paper, we suggest a DRM enabled P2P model that can support distributed processing ability and high scalability with no modification in exist P2P model or architecture.