Interest packet forwarding method based on data attributes in vehicle-mounted named data networking

A technology for naming data networks and data attributes. It is used in data exchange networks, digital transmission systems, nan, etc., and can solve problems such as discarding.

Active Publication Date: 2016-06-15
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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-mounted named data networking
  • Interest packet forwarding method based on data attributes in vehicle-mounted named data networking
  • Interest packet forwarding method based on data attributes in vehicle-mounted named data networking

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specific Embodiment approach

[0027] Specific Embodiments 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 and 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 the opposi...

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Abstract

The invention claims an interest packet forwarding method based on data attributes in a vehicle-mounted named data networking. The interest packet forwarding method comprises the steps that: a vehicle node monitors an interest packet sent by a neighbor vehicle, and extracts a position L, a driving vehicle speed V1 and a driving direction D1 of a previous hop vehicle from the interest packet; then the vehicle node calculates waiting time according to a Twait formula, and enters a monitoring state; and the vehicle node forwards the interest packet when the forwarding of the interest packet by other vehicles is not monitored at the end of the wait time, or cancels the forwarding if the forwarding of the interest packet by other vehicles is monitored before the end of the wait time. According to the interest packet forwarding method, the Twait calculation results is changed with the combination of data attribute coefficients, thus the vehicle suitable for assisting in forwarding data with the attributes has the minimal wait time, the forwarding vehicle selection is completed, and the pass back success rate and average transmission delay of the data packet are improved while ensuring the distribution rate of the interest packet.

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 Applications(China)
IPC IPC(8): H04W4/04H04W40/02H04W40/20H04W40/22H04L12/725H04L12/727H04L29/08H04L45/121
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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