V2X business transmission method

A transmission method and service technology, applied in the field of communication, can solve problems such as not providing V2X service transmission, unable to meet V2X requirements, etc., to achieve timely and fast transmission, and meet the effect of delay requirements

Inactive Publication Date: 2018-01-30
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Considering that V2X services have more stringent delay and reliability requirements, and V2X is transmitted through PC5 port and / or Uu port, directly using D2D technology cannot meet V2X requirements
And the current 3GPP agreement does not give how to realize V2X service transmission on the air interface

Method used

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Embodiment Construction

[0030]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented.

[0031] In general, V2X services require low latency and high reliability, and can be transmitted through the Uu port and / or PC5 port. The D2D communication is based on the PC5 port to realize broadcast transmission. Aiming at the characteristics and requirements of V2V, the embodiment of the present invention performs a new design on the air interface channel of LTE-A, an evolution technology of the Long Term Evolution technology. For logical channels, the MAC layer divides multiple logical channel types according to the type of information to be transmitted, and provides diff...

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PUM

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Abstract

The invention discloses a V2X business transmission method. A logical channel of a MAC (media access control) layer is added. A vehicle business channel VTCH is used for transmitting the V2X businessdata. As a Sidelink logical channel, the VTCH and the Sidelink business channel STCH both map to a Sidelink transmission channel. A Sidelink shared channel SLSCH is provided. As an uplink logical channel, the VTCH maps to the transmission channel. An uplink shared channel ULSCH is provided. The method comprises the steps that a vehicle terminal transmits the V2X business data through the VTCH; thevehicle terminal transmits communication D2D business data between devices through the Sidelink business channel STCH. The invention is advantageous in that with the new logical channel, and with thegiven mapping relationship among the new logical channel, the transmission channel and the physical channel, the transmission of the V2X business can be realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for transmitting V2X services. Background technique [0002] The information exchange between the vehicle and the outside world (Vehicle to X, V2X) is the key technology of the future intelligent transportation system. V2X mainly studies the vehicle data transmission scheme based on the 3rd Generation Partnership Project (3GPP) communication protocol. Currently, V2X applications in existing reports include: Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I), Vehicle-to-Pedestrian (V2P) ) and Vehicle-to-Network (V2N). V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency and in-vehicle entertainment information, etc. [0003] In the existing technology, Dedicated Short Range Communications (DSRC) is usually used to transmit V2X services, but its transmission indicators such as co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W40/12H04W74/00
Inventor 周欣姜春霞吕征南
Owner POTEVIO INFORMATION TECH
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