Third-generation telecommunication (3G) auxiliary data transmission method in vehicle network
A technology of auxiliary data transmission and vehicle network, which is applied in the field of 3G auxiliary data transmission in vehicle network, can solve the problems of fast moving speed, unstable connection, restricted node movement, etc., and achieve high successful transmission rate and low average delay Effect
Inactive Publication Date: 2013-09-18
SHANGHAI JIAO TONG UNIV
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[0004] The purpose of the present invention is to provide a method for 3G auxiliary data transmission in a vehicle network, so as to solve the problems of fast moving speed of nodes in the prior art, unstable connection, fast change of network topology and limited movement of nodes
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[0018] The method for 3G auxiliary data transmission in a vehicle network proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0019] We are considering a data collection scenario in VANETs. A central server in the Internet uses vehicles to collect certain types of data in the current network. There are two ways to transmit data: one is to use wireless communication between vehicles, and data can be transmitted to roadside nodes through multiple hops ( AP), the AP sends the data to the central server. This transmission method is low in cost, b...
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The invention provides a third-generation telecommunication (3G) auxiliary data transmission method in a vehicle network. The 3G auxiliary data transmission method comprises that: a plurality of vehicle nodes and a plurality of roadside nodes initialize a system of the network according to historical information data; the vehicle nodes transmit local cache data information and encountering information of other vehicle nodes or roadside nodes to a central server through 3G, wherein the vehicle nodes collect data time and divide the data time into time slots with equal length during the whole data collection process; the central server distributes data needing to be transmitted through the 3G in each time slot on the basis of the current network state; the central server distributes the distribution results to the vehicle nodes in the whole network; the vehicle nodes transmit the data needing to be transmitted in each time slot to the central server through the 3G, and the remaining data are transmitted to the central server through original routing protocols.
Description
Technical field [0001] The present invention relates to the field of communication technology, in particular to a method for 3G auxiliary data transmission in a vehicle network. Background technique [0002] Vehicle Ad Hoc Networks (VANETs) is a new type of network, which has received extensive attention in recent years. The network is a new type of wireless network composed of vehicles as mobile nodes. Each vehicle sends and receives data through wireless communication equipment installed on the vehicle. The communication range is within a few hundred meters and can realize vehicle-to-vehicle, vehicle and roadside infrastructure. Multi-hop wireless communication between. In the vehicle network, there are many promising applications: for example, safe driving, content sharing, traffic monitoring and so on. And effective data transmission is especially important in realizing these applications. [0003] Different from the traditional mobile ad hoc network, the design of data tran...
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Inventor 赵晴雯朱燕民
Owner SHANGHAI JIAO TONG UNIV