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Multi-path TCP network coding transmission system and method based on packet loss distinguishing in vehicle ad hoc network

A self-organizing network and packet loss distinguishing technology, applied in the field of computer network and communication, can solve the problem of interruption of the communication link between the terminal and the remote server, and achieve the effect of improving link utilization, saving network resources, and avoiding retransmission.

Inactive Publication Date: 2019-07-26
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

But when the vehicle is beyond the communication range of the roadside unit, the communication link between the terminal and the remote server will be interrupted

Method used

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  • Multi-path TCP network coding transmission system and method based on packet loss distinguishing in vehicle ad hoc network
  • Multi-path TCP network coding transmission system and method based on packet loss distinguishing in vehicle ad hoc network
  • Multi-path TCP network coding transmission system and method based on packet loss distinguishing in vehicle ad hoc network

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Embodiment Construction

[0038] The whole differentiation process involves a wide range of aspects, including data distribution, packet loss discrimination, transmission control and network parameter evaluation. The sender is mainly composed of five modules, which are data scheduling and allocation module, packet loss rate and bandwidth evaluation module, packet loss discrimination module, link reliability detection module and transmission control module.

[0039] Among them, the data scheduling distribution module distributes data to different paths for transmission. When packet loss occurs in the link, firstly judge the cause of packet loss according to the packet loss rate and bandwidth evaluation module. With the assistance of the link reliability evaluation module, the transmission control module adopts different data transmission strategies for the reasons of packet loss. Data acknowledgment is performed by using a non-discardable selective acknowledgment mechanism (Non Renegable Selective Ackn...

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Abstract

The invention discloses a multi-path TCP network coding transmission system and method based on packet loss distinguishing in a vehicle ad hoc network. In the vehicle ad hoc network, as the vehicle moving speed is high, the network topological structure of the node in the VANET changes rapidly. Besides, in a wireless vehicle-mounted network environment, the wireless vehicle-mounted network is easily interfered by external environment factors (such as noise, wireless signal attenuation, buildings and the like), so that the transmission efficiency of data in the VANET is greatly reduced. The method comprises the following steps: firstly, judging whether a data packet is lost or not in the sending process of the data packet; secondly, in the case of data packet loss, reasons for data packet loss can be detected, and different processing can be carried out according to the reasons for packet loss on different sub-streams. Experimental simulation shows that compared with a conventional multi-path TCP transmission method, the method provided by the invention not only saves network resources, but also has advantages in network parameters such as throughput and time delay.

Description

technical field [0001] The invention belongs to the field of computer network and communication, specifically based on the optimization and improvement of the data transmission control method on the infinite link in the vehicle ad hoc network (Vehicular Ad-hoc NETwork, VANET), and proposes a multiple The TCP network encoding transport method for the path. Background technique [0002] As an important application scenario of the 5th generation mobile communication system (5G), the Wireless Vehicular Networks (WVN, Wireless Vehicular Networks) has attracted people's attention. It is a typical wireless Ad hoc network (WAN). The network not only has the characteristics of dynamic network topology and unpredictable channel quality, but also the wireless vehicle network has the characteristics of frequent network topology changes and fast movement speed. At the same time, the wireless vehicle network has high requirements for delay and throughput. The TCP protocol has long been a...

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Application Information

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IPC IPC(8): H04W4/40H04W24/02H04W28/02H04W28/06H04W84/18
CPCH04W24/02H04W28/0242H04W28/0289H04W28/06H04W84/18H04W4/40
Inventor 谢显中陈杰黄倩黎佳
Owner CHONGQING UNIV OF POSTS & TELECOMM
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