Real-time streaming data distribution method in named data networking (NDN)

Abstract

The invention relates to a real-time streaming data distribution method in NDN, belongs to the technical field of network communication, and solves the problems that real-time streaming data distribution is not high in efficiency and interaction between a user and a streaming data source lacks. A real-time streaming data distribution mechanism and an interaction mechanism between the user and a streaming data source server are included; the real-time streaming data distribution mechanism includes a real-time streaming data distribution link establishing process and a real-time streaming data distribution link disconnecting process; and the streaming data source server distributes a specific data packet along a real-time streaming data distribution link to realize the interaction mechanism between the user and the streaming data source server, all routing nodes which receive the specific data packet construct a reverse PIT item to establish a reverse communication link from the user to the streaming data source server, and the user sends a user data package generated by the user along the established reverse communication link. Thus, the real-time streaming data can be distributed in high efficiency, and interaction between the user and the streaming data source is enhanced.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for distributing real-time streaming data under a named data network. Background technique [0002] Named Data Networking (NDN, Named Data Networking) is a future Internet architecture proposed in recent years that attempts to replace the traditional TCP / IP protocol-based network. Through unified data naming and network built-in cache, the communication core is changed from The position of the communication node is transferred to the content of the communication request. The content distribution under the NDN architecture is entirely initiated by the data receiving end, that is, the data requesting party, and the user obtains the data by means of pull. [0003] The communication process of NDN is mainly as follows: the user sends an interest packet (Interest) requesting a content; after the interest packet reaches the routing node, it first checks whether ...

AI Technical Summary

Problems solved by technology

[0005] First of all, NDN's packet-level stateful routing and forwarding is complex for the real-time streaming data distribution business operation process, and routing nodes need to build and delete a large number of PIT entries, which increases the burden on network routing nodes

[0006] Secondly, NDN's pull-based content distribution mode requires users to send a large number of interest packets in real time, and it is necessary to ensure that user requests are synchronized with the distribution of streaming data sources, which requires additional operational overhead and reduces the real-time performance of data distribution

[0007] Finally, for some real-time streaming data distribution services that require real-time acquisition of user interaction data (such as webcast, which requires user interaction and participation), users can only receive data and cannot actively send data (this requires streaming data sources to issue content requests to achieve , but the stream data source cannot identify which user is requesting data), so there is a lack of interaction between the user and the stream data source

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