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Vehicle networking information delay transmission method based on MSPA algorithm

A transmission method and technology of Internet of Vehicles, applied in the field of Internet of Vehicles information delay-tolerant transmission, can solve problems such as disconnection of information transmission network

Inactive Publication Date: 2014-04-23
HARBIN INST OF TECH
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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 solve the problem that the existing information transmission cannot be aimed at the disconnection of the network, and to provide a delay-tolerant transmission method of Internet of Vehicles information based on the MSPA algorithm

Method used

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  • Vehicle networking information delay transmission method based on MSPA algorithm
  • Vehicle networking information delay transmission method based on MSPA algorithm
  • Vehicle networking information delay transmission method based on MSPA algorithm

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specific Embodiment approach 1

[0031] Specific implementation mode 1: the following combination figure 1 To explain this embodiment, the method for delay-tolerant transmission of car networking information based on the MSPA algorithm described in this embodiment is as follows:

[0032] Step 1: Generate the original relay node;

[0033] Step 2: The relay node broadcasts the information packet once;

[0034] Step 3: The relay node queries the car nodes whose speed is greater than its own in the transmission circle, records the speed of the car nodes, and forms a speed_list;

[0035] Step 4. Select the car node with the highest speed in the speed_list obtained in step 3 as the next relay node, set the time it takes to leave the launch circle as minimum_time, and start the timer;

[0036] Step 5: Determine whether the timer time is less than minimum_time, if not, execute step 6, if yes, execute step 8;

[0037] Step 6. The relay node broadcasts the information packet once, and then sends the permission packet to the subse...

specific Embodiment approach 2

[0047] Specific implementation manner 2: This implementation manner further explains the implementation manner 1. The query packet in step eight includes a From_ID data packet, a Time data packet, and a Check data packet;

[0048] The length of the From_ID data packet is 4B, which is used to indicate the sender of the query packet;

[0049] The length of the Time data packet is 1B, which is used to indicate the time when the query packet is generated;

[0050] The length of the Check data packet is 1B, which is used to indicate the query function of the query packet.

specific Embodiment approach 3

[0051] Specific embodiment 3: This embodiment further explains the first embodiment. The information packets described in step 2, step 6 and step 13 are the same, including From_ID packet, Time packet, Direction packet and Data packet;

[0052] The length of the From_ID data packet is 4B, which is used to indicate the sender of the information packet;

[0053] The length of the Time data packet is 1B, which is used to indicate the time when the information packet was generated;

[0054] The length of the Direction data packet is 1 bit, which is used to indicate whether there are relay nodes in the forward and reverse directions. Direction0 indicates that there are relay nodes only in the positive phase, and Direction0 indicates that there are relay nodes in both directions;

[0055] The length of the Data packet is 995B, which is used to indicate the information to be sent by the packet.

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Abstract

A vehicle networking information delay transmission method based on MSPA algorithm belongs to the field of automobile mobile internet, and is to solve the problem that the present information transmission cannot aim at a network disconnection-connection condition. The process comprises the following steps of: producing an original relay node; broadcasting an information packet by using the relay node; and once playing the information packet at every step of 2R distance. When the relay node queries running in the same direction into itself transmitting coil inner vehicle node, a speed that the transmitting coil inner vehicle node bears off the transmitting coil is updated and calculated, thereby selecting the vehicle node of the minimum speed as the subsequent same-direction relay node. Firstly, the information packet is broadcasted once, and then an authority packet is sent to the subsequent same-direction relay node. When the relay node queries to the reverse direction vehicle node and a flag bit in the information packet is zero, the relay node changes the flag bit in the information packet to 1, and the information packet is broadcasted once, and then the authority packet according to the positive direction rule in the reverse direction is sent to the subsequent reverse direction relay node. The vehicle networking information delay transmission method is used for vehicle networking transmission information under the state of network disconnection-connection.

Description

Technical field [0001] The invention relates to a method for delay-tolerant transmission of vehicle networking information, and belongs to the field of automobile mobile Internet. Background technique [0002] The design goals of telecommunications technology used in the automotive field are: a) reduce the number of accidents and their impact; b) share useful traffic information between vehicles to reduce traffic congestion; c) broadcast information between vehicles without infrastructure (Such as weather forecast, etc.), it can also collect information on different vehicles. [0003] Under the actual road traffic environment, due to the fast movement of the car nodes, the traffic flow changes very greatly, sometimes too dense, sometimes too sparse. When the car nodes are too sparse, the originally connected Vehicle Adhoc Network (VANET) may appear disconnected due to factors such as the distance between the nodes is too large or the nodes are blocked. This situation is likely to...

Claims

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Application Information

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IPC IPC(8): H04W40/20
Inventor 崔刚付忠传暴建民潘波王秀峰邹炳松朱东杰张策张必英季春光
Owner HARBIN INST OF TECH
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