A data retrieval and push method based on ndn and sdn

A data retrieval and data request technology, applied in the field of computer networks, can solve the problem of prolonged matching search processing, and achieve the effect of reducing data acquisition delay, processing delay and liberating performance.

Active Publication Date: 2022-07-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0008] The purpose of the present invention is to solve the technical defects of "the matching search processing delay in the FIB is too long" and "the content notification cannot be distributed flexibly and effectively" in the traditional NDN architecture, and proposes a flexible data based on the NDN-SDN fusion architecture. Retrieval method, used in the field of information retrieval, to solve the above problems existing in the traditional NDN architecture

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  • A data retrieval and push method based on ndn and sdn
  • A data retrieval and push method based on ndn and sdn
  • A data retrieval and push method based on ndn and sdn

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Embodiment Construction

[0071] The present invention will be described in detail below with reference to the accompanying drawings and embodiments, and at the same time, the technical problems and beneficial effects solved by the technical solutions of the present invention will be discussed. It should be pointed out that the described embodiments are intended to facilitate the understanding of the present invention, and do not have any limiting effect on the present invention.

[0072] This embodiment discusses the application of a data retrieval and push method based on NDN and SDN in data retrieval.

[0073] This embodiment is based on the NDN-SDN network. The user sends an Interest packet to request the content whose data content name is / want, the router forwards the Interest packet to the central controller, and the central controller completes name resolution, calculates routes, and uses source routing to issue instructions to forwarding plane, and finally the forwarding plane pushes the data ...

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Abstract

The invention discloses a data retrieval and push method based on NDN and SDN, and belongs to the technical field of computer networks. This method integrates the original distributed NDN architecture and SDN architecture, and introduces a central controller. Through the central controller and source routing technology, the push-based data packet transmission is realized from a global perspective, and the PIT and FIB tables are removed. The performance of the router is improved, the traffic in the network is reduced, and the processing delay of the router is greatly reduced; the router promptly announces the content of CS changes to the central controller, and the central controller selects the routing node with the lowest cost to consumers, which is flexible and effective. The distributed content announcement allows the CS to be used to the greatest extent and reduces the data acquisition delay. The present invention can be applied to the field of information retrieval, etc., and solves the technical defects of the traditional NDN architecture of "the processing delay of matching and searching in the FIB is too long" and "the content announcement cannot be distributed flexibly and effectively".

Description

technical field [0001] The invention relates to a data retrieval and push method based on Named Data Networking (NDN) and Software-Defined Networking (SDN), and belongs to the technical field of computer networks. Background technique [0002] Named Data Networking (NDN) is centered on data content, which is different from the IP address-based addressing mode of the existing TCP / IP network. NDN sets the content name as the addressing mode, and establishes a routing table based on the content name for communication. , which decouples the relationship between data content and location. Compared with the server-centric communication mode, in the NDN architecture, the data content is independent of the location, so it is very suitable for data retrieval. [0003] The transmission mechanism of NDN network is to communicate data by sending interest packets to drive content producers to reply data packets, and both interest packets and data packets contain a content name to identi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/00H04L47/10H04L67/55G06F16/901H04L45/74
CPCH04L45/34H04L45/54H04L47/10G06F16/9024H04L67/55
Inventor 郭柳安建平李彤张宇薛艳明刁文澜李梦珂
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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