54 results about "Peer to peer overlay networks" patented technology

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.

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.

A method and system for creating a peer-to-peer overlay network. The method includes discovering a set of node characteristics for each of a subset of existing nodes of a network. The method also includes scaling each of the discovered set of node characteristics to a value which is within a predetermined range of values. The method also includes generating a set of weighted values for each of the subset of nodes by applying a weighting function to each of the scaled values. In addition, the method includes generating a node rank value for each of the subset of nodes by summing the weighted values of each respective set of weighted values. Further, the method includes determining whether to connect to any of the subset of nodes based upon the node rank value.

The invention discloses a CDN (Content Delivery Network) server and a content download method. The CDN server comprises a receiving module, a query module, a selection module and a redirection module, wherein the receiving module is used for receiving a request sent by UE (User Equipment) and delivering the request message of the network download contents through a peer-to-peer general content; the query module is used for quering the storage location of the contents referred in the request message through a peer-to-peer overlaying network, wherein the storage location comprises position information of one or more nodes of storage contents, and one or more nodes comprise a content resource node and/or the CDN server; the selection module is used for selecting one node from the storage location; and the redirection module is used for redirecting the request message to the selected node so as to lead the selected node to send the contents to the UE. By adopting the CDN server and the content download method, the application range of the peer-to-peer general content delivery network is widened, and the user experience is provided.

A system and method for an auxiliary network for a peer-to-peer overlay network using autonomous system level topology. Using information available through the auxiliary network, expressway connections are established amongst expressway nodes and ordinary connections are established between ordinary and expressway nodes. The connections established is unconstrained and arbitrary. After the connections are established, efficient routing of information may take place.

The invention discloses a dynamic load balancing method of a release/subscription system. The system comprises a peer-to-peer overlay network consisting of a plurality of servers, each server in the network is used as an access server to receive subscription and event information, and after the even channel of the information is determined according to an overall routing list, the information is transmitted to the event channel to be processed; and the system carries out the dynamic load balance during the running process, wherein the dynamic load balance comprises: the server with heavy loadselects a transferring load locally and selects a load receiving server in other servers, and the transferring load is transmitted to the load receiving server. The method can be used for the plurality of fields such as finance service, news service, sensor network, RFID application and the like.

One embodiment provides a system and method for synchronously buffering real-time streaming content in a peer-to-peer overlay network to improve inter-peer-node synchronization. A requesting peer node identifies a partner peer node that transiently stages content segments. The requesting peer node determines the status of its local buffer and sends a request that indicates such status to a partner peer node. After receiving the most recent segment not present in the buffer from the partner peer node, the requesting peer node transiently stages the received segments in the buffer.

Information codes are arranged in pieces comprised of chunks of bytes over a network, such as a Peer-to-Peer overlay network, including a set of peer terminals. A first peer identifies missing chunks in the received pieces and requests such missing chunks from other peers. The chunks are subjected to a fountain code encoding wherein the chunks in a piece are X-ORed. The first peer is therefore capable of reconstructing a received piece encoded with fountain codes from a combination of linearly independent chunks corresponding to the piece. The chunks are transmitted over the network with a connection-less protocol, without retransmission of lost packets, preferably with a UDP protocol.

A method of storing semantically similar documents on proximally located peers in a structured peer to peer overlay network, where each peer is assigned a unique identifier and each document includes one or more words belonging to at least one hierarchical structured collection of words. A method of searching and retrieving documents, corresponding to a search query, from a structured peer to peer overlay network is also provided.

The invention discloses a content delivery network server and a content downloading method. The content downloading method comprises that: an access content delivery network (CDN) server of user equipment receives a content request from the user equipment, wherein the content request carries an identifier of requested contents; the access CDN server acquires the position information of the contents corresponding to the identifier by a peer-to-peer overlay network; and the access CDN server downloads the contents according to the position information by a peer-to-peer universal content delivery network, and transmits the downloaded contents to the user equipment by the content delivery network server and the content downloading method, the application range of the peer-to-peer universal content delivery network can be widened, and user experiences can be improved.

A broadcast message may be initiated or received at a peer node. The node obtains an uplink bandwidth available for broadcasting the message over the network and a number of copies that can be broadcast based on the available bandwidth. The node determines a range of key values for finger nodes that should receive copies of the broadcast message from a finger table. The finger table entries include references to finger nodes and key values associated with the finger nodes. The node determines which other nodes should receive copies of the broadcast message from range of key values and the number of copies. The node also determines an End ID for each recipient node. A copy of the broadcast message and corresponding End ID is sent to a finger node if the finger node's key value is within a range of key values specified by the End ID.

A method provides for the even load distribution in a peer-to-peer-overlay network having a plurality of peers, each having an associated keyword region. A data resource to be stored, the keyword thereof being within the keyword region of a peer, is only stored with said peer if the number of data resources stored there has not reached a resource threshold limit.

A proxying process method for traffic of a wireless node and a system using the method are provided. The proxying process method includes: maintaining a virtual node which stores a communication packet from a server, destined for a first node; and transmitting the stored communication packet from the virtual node to a second node when a transmission request for the communication packet is transmitted to the first node by the second node.

The invention concerns a method of determining a routing path in a peer-to-peer overlay network (N), and a network node (20) and a computer program product to execute said method. The peer-to-peer overlay network (N) comprises a plurality of nodes (0, 20, 50, 87, 112, 140, 179, 200, 211, 223, 240). A physical hardware on which a first node (20) of said plurality of nodes (0, 20, 50, 87, 112, 140, 179, 200, 211, 223, 240) runs is identified. At least one second node (112, 211) of said plurality of nodes (0, 20, 50, 87, 112, 140, 179, 200, 211, 223, 240) which runs on the same physical hardware as the first node (20) is identified. A data set specifying an identifier of said at least one second node (112, 211) is generated. Said data set is stored as a zero-path table associated with the first node (20). When determining said routing path, said data set is accessed and a link (ZL1, ZL2) between said first node (20) and said at least one second node (112, 211) based on said zero-path table is selected.

The present invention provides a transfer method and system for a peer-to-peer overlay network. The transfer method for the peer-to-peer overlay network is used for searching for a relay node between a source host node and a target host node in the peer-to-peer overlay network which comprises multiple host nodes and a bootstrap server. The transfer method comprises the following steps: acquiring coordinates information by the communication between the host node and the bootstrap servers, wherein the coordinates information is used for calculating the time delay between two host nodes based on a distance prediction mechanism; performing host node clustering to make a part of the host nodes as clustering agent nodes and the other host nodes as the host nodes belonging to the clustering agent nodes; selecting, from the clustering agent nodes, the relay node between the source host node and the target host node based on the distance prediction mechanism. With the transfer method and system for the peer-to-peer overlay network of the present invention, effective relay node can be found rapidly in the peer-to-peer overlay network, so that a substitute route with shorter time delay, higher efficiency and stronger stability is established, and high performance communication of peer-to-peer is realized.

A system and method for an auxiliary network for a peer-to-peer overlay network using landmark numbering. Using information available through the auxiliary network, expressway connections are established amongst expressway nodes and ordinary connections are established between ordinary and expressway nodes. The connections established is unconstrained and arbitrary. After the connections are established, efficient routing of information may take place.

A multi-party commitment method is provided whereby a joining node uses contributions provided by contributor nodes in a peer-to-peer overlay network to generate a node identifier. The joining node generates a first contribution and sends a join request to an introducer node (or a plurality of contributor nodes), where the join request seeks to obtain one or more contributions for generating the node identifier within an identifier space of the overlay network. A hash of the first contribution may be included as part of the join request. In response, the joining node may receive a plurality of contributions, wherein the contributions are bound to each other and the first contribution by a prior external multi-node commitment operation. The joining node can then generate its node identifier as a function of the first contribution and the received contributions. Consequently, collusion between nodes and malicious manipulation during ID generation can be frustrated.

The invention relates to a node credit evaluation method based on a group or a cluster used in group or cluster based P2P overlay network configuration. A new credit evaluation system considers the following three essential factors: behavior credit which represents credit degrees of a node historical transaction record and a present behavior; group credit which represents a total credit degree of a group of mutually associated entity nodes to restrict a malicious behavior appeared in a group, wherein, a multinode cooperation cheating behavior is responded well simultaneously; introduction of recommendation credit, wherein, a requirement of sharing resource by a newly added node is solved well, and the newly added node can merge into a network rapidly in a short time. In the P2P overlay network configuration based on group or cluster (103), whatever form is used by the group or cluster to carry out association, a CN (cluster head node) (101) of the group or cluster plays a role of supervising an adjacent group and restricting a present group node.

Provided are a method and apparatus for relaying streaming data between peers including a first device and a second device in a peer-to-peer (P2P) overlay network. A method of relaying streaming data from the first device to the second device includes determining whether requested streaming data is streaming data that the first device is currently receiving when the first device is requested by the second device to relay streaming data to the second device. Then, the first device assigns a reception bandwidth for receiving the requested streaming data from a source device according to the determination result and receives the requested streaming data using the assigned reception bandwidth to relay the requested streaming data to the second device. Therefore, peers can receive streaming data at a high rate in a P2P network.

The invention discloses a call request processing method in a peer to peer (P2P) overlay network. The method comprises the following steps: receiving routing table information which is connected and sent by a unimolecular nucleophilic substitution (SN1) by mAGCF periodically and storing the latest routing table information, wherein the routing table information comprises related node information of the SN1, and selecting a usable related node bimolecular nucleophilic substitution (SN2) from stored related nodes, building connection with the SN2 and using the SN2 to finish a call when a call request sent by a terminal is received and the SN1 is confirmed to be wrong. The invention further discloses a P2P overlay network system and a mAGCF. Call success rate is improved.

The invention discloses a peer-to-peer overlay network, a method for storing service contents and a method for downloading the same. The peer-to-peer overlay network comprises a plurality of positioning storage nodes, wherein for a service content provided by a content source node, the peer-to-peer overlay network is used for storing the service content in at least one of the positioning storage nodes, and the peer-to-peer overlay network is also used for storing the position information of the service content in the at least one of the positioning storage nodes of the peer-to-peer overlay network. By the peer-to-peer overlay network, the service content can be stored in the peer-to-peer overlay network permanently, and the maintenance cost of storing the service content can be reduced.