Interest packet forwarding method based on data attributes in vehicle named data network

A technology for naming data networks and data attributes, applied in data exchange networks, services based on location information, services based on specific environments, etc., can solve problems such as discarding

Active Publication Date: 2018-12-28
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a data arrives but there is no record in the PIT, it means that the data has not been requested and will be discarded directly for security reasons

Method used

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  • Interest packet forwarding method based on data attributes in vehicle named data network
  • Interest packet forwarding method based on data attributes in vehicle named data network
  • Interest packet forwarding method based on data attributes in vehicle named data network

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specific Embodiment approach

[0027] Specific Implementation Modes Vehicle Network Data Classification and Its Attributes

[0028] The implementation of the present invention will be specifically described below in conjunction with the accompanying drawings and specific examples.

[0029] Combine below image 3 with Figure 4 Explain in detail the application process of data transmission in the vehicle named data network.

[0030] suppose image 3 The vehicle in Sender wants to obtain the real picture of the parking lot P at an intersection ahead, and Sender sends an interest packet containing the name " / picture / park / chongwen / p1 / ", where / picture / means the real picture, and / park / means it is Request a real picture of a parking lot, / chongwen / indicates that the specified parking lot is located on Chongwen Road, and / p1 / is the name of the parking lot. If the Interest packet is only forwarded according to the mechanism of the farthest vehicle within the transmission range, image 3 The vehicle N1 in ...

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Abstract

The invention requests protection of an interest packet forwarding method based on data attributes in a vehicle named data network. The process is that the vehicle node listens to the interest packet sent by the neighbor vehicle, and the vehicle node extracts the location L, driving speed V1 and driving direction D1 of the previous vehicle from the interest packet; then the vehicle node calculates the waiting time according to the waiting time formula, Enter the monitoring state; when the waiting time is over and no other vehicle has been heard to forward the Interest packet, the vehicle node will forward the Interest packet, and if other vehicles are heard to forward the Interest packet before the waiting time is over, the forwarding will be cancelled. Combined with the data attribute coefficient to change the calculation result of waiting time, the vehicle suitable for helping the data forwarding of this attribute has the minimum waiting time, completes the forwarding vehicle selection, and improves the return success rate of the data packet while ensuring the distribution rate of the interest packet and the average transmission delay.

Description

technical field [0001] The invention relates to the field of vehicle-mounted named data network data distribution, in particular to the design of time formulas such as interest packet forwarding and monitoring, the calculation of data attribute factors, and the design of an interest packet forwarding model. Background technique [0002] Industry and academia have been researching vehicle networks for decades, and relevant academic achievements include workshop multi-hop routing algorithms, mobility management solutions, and so on. The traditional multi-hop routing algorithms include proactive WRP and DSDV, reactive DSR and AODV, and hybrid ZRP and HARP. Proactive routing is directly transplanted from wired network routing protocols. Just like wired networks, proactive routing first establishes an optimal path table to reachable nodes and maintains the table continuously, updating the routing information of all nodes. Reactive routing is to avoid a large amount of network ov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04W4/02H04W4/46H04W40/02H04W40/20H04W40/22H04L12/727H04L12/725H04L45/121
CPCH04L45/121H04L45/30H04L67/12H04W40/026H04W40/20H04W40/22
Inventor 刘期烈李伟秦庆伟夏远鹏李云冯志宇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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