Roxbeam Media Network Corporation

Microsoft Technology Licensing, LLC

Xinyan Zhang

Wenwu Zhu

Qian Zhang

Yongqiang Xiong

Yongqi Yang

Jiangchuan Liu

Qiao Lian

One embodiment provides a system and a method for presenting streaming media content delivered through a peer-to-peer overlay network. During operation, a data-transfer mechanism sends requests to a plurality of peer nodes to receive data for streaming media content. The system stores received data for the streaming media content into a buffer. Next, a server local to a media presentation mechanism serves the buffered data to a media presentation mechanism. The server controls the data serving in response to a signal received from the media-presentation mechanism.

System and method for presenting streaming media content

A system and method facilitate dynamic QoS-based billing in a P2P network. According to one embodiment, a peer node identifies a plurality of partner peer nodes that transiently stage streaming media data the peer node requests and receives from the partner peer nodes. The peer node further collects QoS information for the received data and communicates a QoS information report to a remote node to facilitate QoS-based billing.

System and method for dynamic quality-of-service-based billing in a peer-to-peer network

A system and method facilitate a credit system for providing user incentives to encourage data sharing in a P2P network. The credit system maintains a user credit database and respectively increases or decreases a user's credits based on the data uploaded to or downloaded from other peer nodes. The credit system can also associate a user's credits with economic value or rewards to encourage the user to share data with other peer nodes. In one embodiment, the credit system maintains a credit record for each user. The credit system increases the credit for a user based on the amount of data a peer node associated with the user uploads to other peer nodes in the P2P network. The credit system also decreases the credit for the user based on the amount of data downloaded by the peer node associated with the user.

System and method for facilitating a credit system in a peer-to-peer content delivery network

One embodiment provides a method and a system for expediting content delivery in a peer-to-peer overlay network. A local cache and directory server caches a multiplicity of segments for multi-media content, and maintains a mapping between cacheable content and one or more local partner nodes that transiently stage segments for the cacheable content. The local cache and directory server receives a request identifying requested content, which may or may not be cached or mapped. The cache and directory server determines a match to the requested content in the mapping and sends a list of local partner nodes that transiently stage segments for the requested content based on the match.

Method and system for expediting peer-to-peer content delivery with improved network utilization

A system for delivering streamed content over a large digital network such as the Internet. Distributed functionality executes on nodes in the network to achieve functions such as assigning partner nodes for transfer of content to or from a target node, scheduling transfer operations among nodes, adding or removing nodes from the network, maintaining security, and other operations. Different embodiments may use one or more of the functional features. In a preferred embodiment, video content is segmented and streamed through multi-path routing. An overlay network uses nodes in partnership groups so that a target node can obtain segments from multiple sources. Partner nodes can provide the segments within a given time window, including simultaneous delivery from multiple partner nodes, so that a more reliable data stream is supported.

Distributed system for delivery of information via a digital network

One embodiment provides a system and method for facilitating expedited delivery of media content to a node over a network. During operation, the system communicates a request to a media server to present media content. The system then presents the media content based on the data received from the media server. In addition, the system communicates requests to a plurality of peer nodes within the network for the media content at a same proximate time. Next, the system discontinues receipt of data from the media server and presents the media content based on data received from at least one peer node without significant interruption in presentation.

System and method for facilitating expedited delivery of media content

A network performance (e.g., latency and bandwidth) measurement infrastructure for large scale networks based on self-organized probing groups of devices. Each group of devices has a lead device that measures network characteristics, and then shares the measurement information with other devices. This grouping method reduces the amount of network bandwidth needed for adequate measurements, while still providing necessary information to individual devices. The system utilizes a novel multicast-based algorithm that is adopted for both intra-group and inter-group performance measurement. The measurement groups (MeGroups) are dynamic and self-forming, and use a set of heuristic algorithms to optimize the dynamic groupings.

Peer-to-peer based network performance measurement and analysis system and method for large scale networks

A peer-to-peer (P2P) probing/network quality of service (QoS) analysis system utilizes a UDP-based probing tool for determining latency, bandwidth, and packet loss ratio between peers in a network. The probing tool enables network QoS probing between peers that connect through a network address translator. The list of peers to probe is provided by a connection server based on prior probe results and an estimate of the network condition. The list includes those peers which are predicted to have the best QoS with the requesting peer. Once the list is obtained, the requesting peer probes the actual QoS to each peer on the list, and returns these results to the connection server. P2P probing in parallel using a modified packet-pair scheme is utilized. If anomalous results are obtained, a hop-by-hop probing scheme is utilized to determine the QoS of each link. In such a scheme, differential destination measurement is utilized.

Growing community of inventors

Nanjing, China

Xinyan Zhang