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Random access method in V2X network

A random access and network technology, applied in electrical components, wireless communication, transmission systems, etc., can solve the problems of transmission indicators, such as communication distance, delay or reliability, which cannot meet the technical requirements of V2X services for transmission indicators.

Active Publication Date: 2018-01-12
POTEVIO INFORMATION TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0003] In the existing technology, Dedicated Short Range Communications (DSRC) is usually used to transmit V2X services, but its transmission indicators (such as communication distance, delay or reliability, etc.) cannot meet the requirements of V2X services for transmission indicators. need
In particular, the current delay problem of V2X services is relatively prominent

Method used

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Embodiment Construction

[0030] In order to make the purpose, technical means and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings.

[0031] Random access technology is an important technology for media access control in communication systems. It is a necessary process for establishing a wireless link between user equipment (UE, User Equipment) and the network. Regarding the V2X service, this application reduces the overall V2X service delay by reducing the delay of the V2X service random access process.

[0032] Next, the current problem that causes a large delay in the random access process of the V2X service is analyzed as follows: For the random access process in the existing 3GPP protocol, the network side cannot identify the UE type and distinguish whether the random access is triggered by the V2X service. 入程。 Into the process. When a UE performs a contention-based random access process in an initial access ...

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Abstract

The invention discloses a random access method in a V2X network. The method comprises the following steps of a Vehicle-UE or a UE-type RSU carrying a terminal indication identifier in the Msg3 sent toa network side for indicating whether the randomly accessed UE is a Vehicle UE or a UE-type RSU during competitive random access; and the eNodeB selecting the accessing terminal according to the terminal indication identifier, wherein access processing of the Vehicle-UE or a UE-type RSU is superior to a standard terminal. By applying the method, the time delay of V2X service can be reduced.

Description

Technical field [0001] This application relates to an access technology in a communication system, and in particular to a random access method in a V2X network. Background technique [0002] V2X (Vehicle to X) is the information exchange between the car and the outside world, and is the key technology of the future intelligent transportation system. V2X was approved at the 3GPP RAN#68 meeting to establish a project, mainly researching the vehicle data transmission scheme based on the 3GPP communication protocol. V2X communication includes V2V communication (vehicle-to-vehicle communication), V2I communication (vehicle-to-roadside infrastructure communication), and V2P communication (vehicle-to-pedestrian communication). V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency and in-car entertainment information. [0003] In the prior art, Dedicated Short Range Communications (DSRC) is usually used to transmit V2X ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/10H04W72/12H04W74/08H04L29/08
Inventor 周欣姜春霞李维娜吕征南
Owner POTEVIO INFORMATION TECH CO LTD
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