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Direction-aware forwarding method, device and system based on NDN network architecture

A direction-aware and network architecture technology, applied in the field of direction-aware forwarding methods, devices and systems based on NDN network architecture, can solve problems such as network redundancy, insufficient bandwidth, etc., to solve insufficient bandwidth, save network resource waste, and avoid caching. The effect of frequent updates

Active Publication Date: 2020-03-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to disclose a direction-aware forwarding method, device and system based on NDN network architecture to solve the problems of insufficient bandwidth and network redundancy caused by high-speed movement of terminals

Method used

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  • Direction-aware forwarding method, device and system based on NDN network architecture

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Embodiment 1

[0034] This embodiment discloses a direction-aware forwarding method based on the NDN network architecture, such as figure 1 shown, including:

[0035] Step S1, the mobile terminal determines its own moving direction.

[0036] Preferably, this step can analyze the displacement data of the mobile terminal within a period of time to determine the moving direction of the mobile terminal, and the acquisition of relevant displacement data can be realized through a positioning module such as GPS.

[0037] In this embodiment, most of the scenarios targeted are network architectures along high-speed railways, subways or expressways; therefore, the general movement information of relevant mobile terminals in a period of time can often be accurately defined; in comparison, if the current The real-time moving direction is likely to lead to misjudgment due to the influence of detours and steering in local road sections.

[0038] Step S2, when the mobile terminal creates the request pack...

Embodiment 2

[0047] Corresponding to the foregoing method embodiments, this embodiment discloses a direction-aware forwarding system and device based on an NDN network architecture.

[0048] On the one hand, the system of this embodiment includes:

[0049] The mobile terminal is used to determine its own moving direction, and when creating the request packet, add its own moving direction information to the request packet and send it;

[0050] The routing node is used to obtain the request packet, and analyze the moving direction information of the mobile terminal from the request packet; when it is judged that there is no data corresponding to the request packet in the local CS, the request packet is added to the PIT table and forwarded to the FIB table ; Then query the FIB table for entries matching the prefix of the request packet, if there is no matching entry, discard the request packet; if there is a matching entry, determine whether the routing direction of the next hop corresponding...

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Abstract

The invention relates to the field of communication technologies, and discloses a direction-aware forwarding method, device and system based on an NDN network architecture. The system of the present invention includes: a mobile terminal, which is used to add its own moving direction information to the request packet when creating a request packet; a routing node is used to parse out the moving direction information of the mobile terminal from the request packet; when judging the local CS If there is no data corresponding to the request packet, add the request to the PIT table and forward it to the FIB table; then check whether the FIB table has an entry matching the prefix of the request packet; if there is a matching entry, determine the entry corresponding to the next Whether the routing direction of a hop is consistent with the mobile terminal corresponding to the request packet, if it is consistent, forward the request packet to the corresponding next hop node, if the routing direction of the next hop corresponding to each matching entry is consistent with the request If the moving direction of the mobile terminal corresponding to the packet is inconsistent, the request packet is discarded.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a direction-aware forwarding method, device and system based on an NDN network architecture. Background technique [0002] Under the traditional TCP / IP network, due to the complexity when the geographical location and topology of nodes change, it becomes a difficult problem to solve in terms of mobility. Various additional protocols are defined to support mobility, such as Mobile IP (Mobile IP), Host Identity Protocol (Host-Identity), Location / Identifier Separation Protocol (Locator / Identifier Separation Protocol, LISP), and these The protocol can be regarded as a patch on the basic TCP / IP network to support mobile communication, but it avoids the core problem of design. These protocols all need to define the two endpoints of data transmission, based on the establishment and maintenance of a continuous connection, so that they are relatively limited in terms of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/751H04L12/733H04L12/741H04L12/801H04L12/823H04L45/02H04L45/122H04L45/74H04L47/32
CPCH04L45/02H04L45/20H04L45/745H04L47/32H04W8/04
Inventor 阳旺吴帆
Owner CENT SOUTH UNIV
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