Abstract: A data processing method, a router, and an NDN system are disclosed. The method may include obtaining a priority attribute of the data when data is received, setting a life cycle attribute for the data according to a correspondence between the priority attribute and the life cycle attribute, and storing, in a local cache, the data having the life cycle attribute.

Abstract: Embodiments of the present invention disclose a method for acquiring content, the method is applied in a content routing node which has both functions of IP routing function and content routing function; a content routing node group is composed by the content routing node and other one or more content routing nodes which have same functions with the content routing node, and popular content is stored in the content routing node group, the method comprising: acquiring a content request from a client; judging whether content requested by the content request is popular content, if yes, acquiring the content requested by the content request in the content routing node group; if not, reorienting the content request to a content server in the IP network to acquire the content request by the content request.

Abstract: The present invention provides a data processing method based on a cache node group for data caching, where each cache node in the group includes a local replacement-allowable data storage space for storing data accessed by a local client and a collaborative replacement-allowable data storage space for storing data content accessed by a non-local client. By using the data processing method to process data content stored in the local replacement-allowable data storage space and the collaborative replacement-allowable data storage space of the cache node, the clients can obtain data more accurately and directly during access to the cache node, thereby meeting different requirements for local optimization of the cache node.

Abstract: A data processing method, a router, and an NDN system are disclosed. The method may include obtaining a priority attribute of the data when data is received, setting a life cycle attribute for the data according to a correspondence between the priority attribute and the life cycle attribute, and storing, in a local cache, the data having the life cycle attribute.

Abstract: A method and apparatus for content management are provided. A collaboration controller receives a stored content list sent by a network node. The stored content list includes an identifier and a popularity level of each content of a plurality of contents. The collaboration controller acquires identifiers and popularity levels of the plurality of contents from the stored content list, establishes a plurality of content list each of which includes identifiers of at least part of the plurality of contents that have a same popularity level, and manages each of the plurality of contents according to a corresponding popularity level.

Abstract: A method for Peer-to-Peer (P2P) streaming media data distribution includes: receiving a media resource request message sent by a Client node, and sending a media resource query request corresponding to the message to multiple resource networks; obtaining response messages to the media resource query request; confirming Cache nodes storing the media resource according to the response messages; and requesting the media resource from the Cache nodes. The present invention further provides a system and a Proxy node for streaming media data distribution, thereby expanding an application range of live/on-demand service of a user, and increasing the flexibility of a system for streaming media distribution.

Abstract: A cache collaboration method includes obtaining, by an upper-layer cache node, bandwidth utilization rates of a backbone port and an edge port of the upper-layer cache node respectively, related information which is about each content obtained by a user in a preset time through the backbone port of the upper-layer cache node, and an access count of the user to each content; comparing, by the upper-layer cache node, the bandwidth utilization rate of the backbone port and the bandwidth utilization rate of the edge port; and when a difference between the bandwidth utilization rate of the backbone port and the bandwidth utilization rate of the edge port is greater than a preset value, sending, by the upper-layer cache node, a collaboration request message to a lower-layer cache node to make the lower-layer cache node adjust a collaboration proportion.

Abstract: The present invention provides a data processing method based on a cache node group for data caching, where each cache node in the group includes a local replacement-allowable data storage space for storing data accessed by a local client and a collaborative replacement-allowable data storage space for storing data content accessed by a non-local client. By using the data processing method to process data content stored in the local replacement-allowable data storage space and the collaborative replacement-allowable data storage space of the cache node, the clients can obtain data more accurately and directly during access to the cache node, thereby meeting different requirements for local optimization of the cache node.

Abstract: Embodiments of the present invention disclose a method for acquiring content, the method is applied in a content routing node which has both functions of IP routing function and content routing function; a content routing node group is composed by the content routing node and other one or more content routing nodes which have same functions with the content routing node, and popular content is stored in the content routing node group, the method comprising: acquiring a content request from a client; judging whether content requested by the content request is popular content, if yes, acquiring the content requested by the content request in the content routing node group; if not, reorienting the content request to a content server in the IP network to acquire the content request by the content request.

Abstract: Embodiments of the present invention disclose a method for acquiring content, where the method includes: acquiring a content request from a client; determining the number of times for requesting requested content; and when the number of times for requesting is greater than a first preset threshold, acquiring the content from a content routing node group in a content network according to the content request, where the content routing node group has a content storage function, and sending the acquired content to the client. The embodiments of the present invention further disclose an apparatus and a network system to which the method is applied. By using the embodiments of the present invention, network transmission redundancy can be reduced, a response speed of user access can be increased, and user experience can be improved.

Abstract: A method and apparatus for establishing a network performance model. The method includes: determining, according to performance data provided by network nodes and the probability of the performance data, a parameter ? showing the correlation of the performance data of different network nodes in a whole network and a parameter ? showing the distribution pattern of the performance data in the network; and establishing a Latent Dirichlet Allocation, LDA, network performance model by using the determined parameter ? and the parameter ?.

Abstract: A cache collaboration method includes obtaining, by an upper-layer cache node, bandwidth utilization rates of a backbone port and an edge port of the upper-layer cache node respectively, related information which is about each content obtained by a user in a preset time through the backbone port of the upper-layer cache node, and an access count of the user to each content; comparing, by the upper-layer cache node, the bandwidth utilization rate of the backbone port and the bandwidth utilization rate of the edge port; and when a difference between the bandwidth utilization rate of the backbone port and the bandwidth utilization rate of the edge port is greater than a preset value, sending, by the upper-layer cache node, a collaboration request message to a lower-layer cache node to make the lower-layer cache node adjust a collaboration proportion.

Abstract: A method for Peer-to-Peer (P2P) streaming media data distribution includes: receiving a media resource request message sent by a Client node, and sending a media resource query request corresponding to the message to multiple resource networks; obtaining response messages to the media resource query request; confirming Cache nodes storing the media resource according to the response messages; and requesting the media resource from the Cache nodes. The present invention further provides a system and a Proxy node for streaming media data distribution, thereby expanding an application range of live/on-demand service of a user, and increasing the flexibility of a system for streaming media distribution.

Abstract: A method and apparatus for establishing a network performance model. The method includes: determining, according to performance data provided by network nodes and the probability of the performance data, a parameter ? showing the correlation of the performance data of different network nodes in a whole network and a parameter ? showing the distribution pattern of the performance data in the network; and establishing a Latent Dirichlet Allocation, LDA, network performance model by using the determined parameter ? and the parameter ?.