The rapid development of Internet has led to the explosion of information sharing, and how to supervise the sharing is a main research topic on current Internet. Aiming at the disadvantage that the current Peer-to-Pee...The rapid development of Internet has led to the explosion of information sharing, and how to supervise the sharing is a main research topic on current Internet. Aiming at the disadvantage that the current Peer-to-Peer (P2P) is hard to manage and control, this paper presents a Session Initial Protocol (SIP)-based P2P network of three-level architecture. SIP middleware is introduced to the middle level of the three-layer architecture. By the connection function of the SIP signaling, the P2P transmission on media-level can be controlled. Using SIP’s register and authentication function, the manage layer can manage the whole P2P network. Based on the aforementioned architecture, this paper investigates the grouping strategy on a live broadcast application in P2P network. Combined with the function of SIP register, the paper works on several grouping strategies, sets up models to manage users by grouping them, presents a weight-based K-means IP address grouping algorithm, and realizes it. The experiment shows that the grouping strategy presented in this paper can solve the problem of group sharing of network resource, and can realize the efficient-sharing, reasonable-distributing of network resource.展开更多
The outbreak of coronovirus-19 epidemic has an unprecedented impact on economic and social development.Many traditional industries have stopped at one time,but the platform economy which is based on digital technology...The outbreak of coronovirus-19 epidemic has an unprecedented impact on economic and social development.Many traditional industries have stopped at one time,but the platform economy which is based on digital technology has accelerated its development and become a new driving force of China’s economic growth.As a new type and mode of business,live broadcast has grown rapidly with unique transmission advantages in this special environment,which not only meets the“no contact”demand during the epidemic situation,but also promotes the integration of online and offl ine.The development of live broadcast platform not only energizes the traditional industry,but also opens up the new growth space of China’s economy,expands the new fi eld of labor and employment,and plays an important role in rural revitalization and overcoming poverty.As a new form and model of business in recent years,the live broadcast platform needs the active guidance and support of the government,and needs to strengthen supervision and governance to promote its healthy,orderly and sustainable development.展开更多
The Fast Broadcasting scheme is one of the simplest schemes that provide video services. In this scheme, the video is divided into equal-sized segments depending upon the bandwidth allocated by the video server. If th...The Fast Broadcasting scheme is one of the simplest schemes that provide video services. In this scheme, the video is divided into equal-sized segments depending upon the bandwidth allocated by the video server. If the video length is not known, then this scheme cannot be applied as the number of video segments cannot be determined. In a live video wherein the video size is unknown, especially the ending time of the live broadcast, e.g., cricket match, this scheme cannot be applied. In this paper, we propose a model that helps the Fast Broadcasting scheme to support live video broadcasting. The basic architecture of the system consists of a live system with one video channel that broadcasts the live video and a video server that broadcasts the already broadcast live video to users.展开更多
基金Supported in part by the Hi-Tech R&D Program (863) of China (2006AA01Z444)the CNGI 2006 Application Demonstration Program (The IPv6 Distributed Multi-media Communication System Based On SIP and WISI/WIMAX )Tsinghua-Microsoft Key Laboratory Fund Project
文摘The rapid development of Internet has led to the explosion of information sharing, and how to supervise the sharing is a main research topic on current Internet. Aiming at the disadvantage that the current Peer-to-Peer (P2P) is hard to manage and control, this paper presents a Session Initial Protocol (SIP)-based P2P network of three-level architecture. SIP middleware is introduced to the middle level of the three-layer architecture. By the connection function of the SIP signaling, the P2P transmission on media-level can be controlled. Using SIP’s register and authentication function, the manage layer can manage the whole P2P network. Based on the aforementioned architecture, this paper investigates the grouping strategy on a live broadcast application in P2P network. Combined with the function of SIP register, the paper works on several grouping strategies, sets up models to manage users by grouping them, presents a weight-based K-means IP address grouping algorithm, and realizes it. The experiment shows that the grouping strategy presented in this paper can solve the problem of group sharing of network resource, and can realize the efficient-sharing, reasonable-distributing of network resource.
基金funded by the Chinese Academy of Social Sciences innovation project“the 14th Five-Year Plan China’s Service Upgrading Strategy and Major Policy Research”(2020 CJY01-B004).
文摘The outbreak of coronovirus-19 epidemic has an unprecedented impact on economic and social development.Many traditional industries have stopped at one time,but the platform economy which is based on digital technology has accelerated its development and become a new driving force of China’s economic growth.As a new type and mode of business,live broadcast has grown rapidly with unique transmission advantages in this special environment,which not only meets the“no contact”demand during the epidemic situation,but also promotes the integration of online and offl ine.The development of live broadcast platform not only energizes the traditional industry,but also opens up the new growth space of China’s economy,expands the new fi eld of labor and employment,and plays an important role in rural revitalization and overcoming poverty.As a new form and model of business in recent years,the live broadcast platform needs the active guidance and support of the government,and needs to strengthen supervision and governance to promote its healthy,orderly and sustainable development.
文摘The Fast Broadcasting scheme is one of the simplest schemes that provide video services. In this scheme, the video is divided into equal-sized segments depending upon the bandwidth allocated by the video server. If the video length is not known, then this scheme cannot be applied as the number of video segments cannot be determined. In a live video wherein the video size is unknown, especially the ending time of the live broadcast, e.g., cricket match, this scheme cannot be applied. In this paper, we propose a model that helps the Fast Broadcasting scheme to support live video broadcasting. The basic architecture of the system consists of a live system with one video channel that broadcasts the live video and a video server that broadcasts the already broadcast live video to users.
