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Forward error correction (FEC) parameter analysis method for vehicle-mounted ad-hoc network communication

A vehicular ad hoc network and forward error correction technology, which is applied in the field of forward error correction FEC parameter analysis of vehicular ad hoc network communication, can solve problems such as redundant number h oscillation, network performance instability, and network performance problems

Active Publication Date: 2020-01-03
NANTONG UNIVERSITY
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Problems solved by technology

[0022] (2) Network performance problems
[0023] The average queue length in the RED-FEC algorithm often increases with the increase in the number of connections, resulting in transmission delay jitter, and more seriously, the redundancy number h calculated by the algorithm will also fluctuate, eventually causing network performance instability

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  • Forward error correction (FEC) parameter analysis method for vehicle-mounted ad-hoc network communication
  • Forward error correction (FEC) parameter analysis method for vehicle-mounted ad-hoc network communication
  • Forward error correction (FEC) parameter analysis method for vehicle-mounted ad-hoc network communication

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Embodiment Construction

[0090] In order to clearly illustrate the technical characteristics of this solution, the following describes the solution through specific implementations.

[0091] See Figure 1 to Figure 4 , The present invention is: a forward error correction FEC parameter analysis method for vehicle-mounted ad hoc network communication, which includes the following contents: firstly, mathematically model the RED-FEC mechanism and derive the average queue Q ave And the differential equation of the instantaneous queue q, and then through the Laplace transform, the mathematical model is transformed into the control system, the controlled object and the controller model are established, and the control system of the RED-FEC mechanism is set, and the modeling design is verified through simulation. And analyze the stability of the RED-FEC system under different load conditions.

[0092] Specifically, the forward error correction FEC parameter analysis method for vehicular ad hoc network communicatio...

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Abstract

The invention provides a forward error correction (FEC) parameter analysis method for vehicle-mounted ad-hoc network communication. The forward error correction (FEC) parameter analysis method comprises the following steps: firstly, performing mathematical modeling on an RED-FEC mechanism, and deriving differential equations of an average queue Qave and an instantaneous queue q; secondly, converting the mathematical model into a control problem through Laplace transformation, establishing a controlled object and RED controller transfer function, and designing a feedback control block diagram of RED-FEC; and finally, analyzing the performance of the RED-FEC algorithm under different load conditions by using the control block diagram. The forward error correction (FEC) parameter analysis method has the advantages that the forward error correction (FEC) parameter analysis method is a parameter analysis method based on the control block diagram, and the RED-FEC algorithm performance in thevehicle-mounted ad hoc network can be predicted, and the RED-FEC stability is judged, and a basis based on the control theory is provided for RED-FEC parameter design.

Description

Technical field [0001] The invention relates to the technical field of vehicle-mounted ad hoc network transmission, in particular to a forward error correction FEC parameter analysis method for vehicle ad-hoc network communication. Background technique [0002] Vehicle Ad-Hoc Network (Vehicle Ad-Hoc Network, VANET) refers to a mobile Ad-Hoc network composed of mutual communication between vehicles and between vehicles and fixed access points. VANET technology has broad application prospects in the fields of accident alarm, assisted driving, traffic information query and Internet access [1] . VANET is usually composed of vehicle unit OBU (On boardUnit) and roadside unit RSU (Roadside unit). Workshop communication can be independent of RSU and use self-organizing networking to realize data transmission. [0003] Because VANET has multi-hop routing, limited network capacity and high-speed movement of nodes [1] , Its network transmission conditions and transmission performance will co...

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Application Information

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IPC IPC(8): H04W24/06H04L12/24H04W4/40
CPCH04W24/06H04L41/142H04L41/145H04L41/147H04W4/40Y02D30/70
Inventor 陈亮王军王进顾翔
Owner NANTONG UNIVERSITY
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