Distributed mobile data transmission method for CCN (Content-Centric Networking)

Abstract

The invention discloses a distributed mobile data transmission method for CCN (Content-Centric Networking). The method includes the following steps: 1) when moving from an access router AR1 to the overlapping area of the AR1 and a router AR2, a receiver sends a message HI containing the identification information of the AR2 to the AR1; 2) when receiving the HI, the AR1 searches the content name corresponding to the receiver in a request table PIT (Pending Interest Table), builds a signaling message by using the content name and the identification of the AR2, and deletes the corresponding PIT entry; 3) the AR1 sends the signaling message along a reverse path corresponding to the content name, and identifies a branch node; the branch node directs the corresponding entry in the PIT to the AR2 and continues to forward the signaling message, and a subsequent router builds a PIT entry corresponding to the content name and directs a next-hop interface to the AR2; 4) an intermediate router between the branch node and the AR2 builds a PIT entry corresponding to the content name. The invention avoids handoff delay and enormous network expenses.

Description

technical field [0001] The invention discloses a data transmission method, in particular to a CCN distributed mobility data transmission method, which belongs to the technical field of mobile communication. Background technique [0002] With the rapid development of information technology, new Internet applications emerge in an endless stream, causing traditional IP technology to face many challenges. In particular, the rapid development of mobile communication technology and the emergence of emerging data applications such as the Internet of Things and cloud computing are gradually changing the traditional mode of Internet users' access to service resources, making the Internet gradually develop from the basic functions of interconnection to supporting massive data interaction. , and pose new challenges to network security and efficient mobility. [0003] In recent years, researchers have used many methods and means to improve and optimize the existing Internet to support ...

AI Technical Summary

Problems solved by technology

Sape Mullender analyzed the problem of source mobility in CCN: not only is it facing a huge routing convergence problem, but it may also cause difficulties in content verification due to source node movement (reference: http: / / www.ccnx.org / pipermail / ccnx-users / attachments / 20110919 / 71193aec / )

However, such solutions impose a greater state maintenance burden on the core network routers, which will seriously affect the efficiency of data forwarding in the CCN environment.

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