SDN (software-defined networking)-based ICN (information-centric networking) routing method

Abstract

The invention relates to an SDN (software-defined networking)-based ICN (information-centric networking) routing method. According to the method, the thought of the separation of control and forwarding of SDN (software-defined networking) is fused in an ICN (information-centric networking) structure, network sources and network statuses are sensed, and the content name-based routing of the ICN is realized. The method mainly comprises following two steps: (1) if the interest packet of the query content of the ICN and the content are located in the same controller and are in the same community, a shortest path is adopted to forward the interest packet, if the interest packet of the query content of the ICN and the content are not in the same community, a shortest path which passes the least communities is adopted to forward the interest packet; and (2) if the interest packet of the query content of the ICN and the content are not under the same controller, query is carried out according to the set of adjoining caching capacity importance degrees of current controller, if the content is in a node controlled by a certain adjoining controller, the data packet is returned to a user along a route, if the content is not in nodes controlled by the adjoining controllers, a controller with the largest neighbor connection importance degree is set as the current controller, a next round of query is carried out until the number of the times of query achieves the maximum number of the times of query. With the method adopted, problems such as low routing efficiency and difficult configuration of the ICN can be solved.

Description

technical field [0001] The invention belongs to the technical field of Internet. Background technique [0002] According to Cisco (Cisco) statistics, global network traffic has increased by 4 times in the past 5 years. From 2012 to 2017, global network traffic will continue to grow at a compound annual growth rate of 23%. And with the continuous emergence of new applications (such as the Internet of Things model, cloud computing model), traffic generation and transmission methods will also undergo fundamental changes. Most of this traffic will come from user-driven content acquisition apps. In order to adapt to the transformation of Internet applications from the sender-driven end-to-end communication mode to the receiver-driven massive content acquisition mode, researchers have proposed a new type of information-centric network architecture in recent years, collectively referred to as information-centric networks. (Information-Centric Networking, referred to as ICN). At...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a new ICN routing mechanism under the fusion framework of SDN and ICN, which better solves the problems of low routing efficiency and inflexible control of ICN

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