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Data retransmission methods and devices

A technology of data repetition and transmission method, applied in the field of communication, can solve the problems of inability to send, data cannot be successfully transmitted to other terminal devices, and the reliability of data transmission cannot be guaranteed.

Active Publication Date: 2019-03-29
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, when terminal devices communicate through direct links, the terminal devices can only send different data through different logical channels, but the terminal devices cannot send the same data on different logical channels. In turn, data may not be successfully transmitted to other terminal devices, so the reliability of data transmission cannot be guaranteed

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  • Data retransmission methods and devices
  • Data retransmission methods and devices
  • Data retransmission methods and devices

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Embodiment Construction

[0144] The embodiment of the present application is applied to the 5G communication system or other systems that may appear in the future, and some terms in the present application are explained below to facilitate the understanding of those skilled in the art. It should be noted that when the solution of the embodiment of the present application is applied to the 5G system or other systems that may appear in the future, the names of network devices and terminal devices may change, but this does not affect the implementation of the solution of the embodiment of the present application.

[0145] 1) A terminal device is a device that provides voice and / or data connectivity to users. In this application, terminal equipment mainly refers to but not limited to vehicle terminals, vehicle terminals, vehicle equipment, mobile terminals, public terminals, etc., wherein, vehicle terminals include but not limited to vehicle navigators, etc., mobile terminals include but not limited to mob...

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Abstract

The invention provides data retransmission methods and devices. A method comprises the steps that a terminal device sends a piece of data in a PDCP (Packet Date Convergence Protocol) entity to N logicchannels, wherein at least logic channel in the N logic channels employs a sidelink transmission mode, and the N is a positive integer greater than or equal to 2; the terminal device obtains resources; and the terminal device sends the data in the N logic channels through utilization of the obtained resources. When communication is carried out between the terminal devices in a slidelink mode, a terminal device sends a piece of data in the PDCP entity to the N logic channels and further the terminal device can send the data in the N logic channels through utilization of the obtained resources,the terminal device can send the same data on a plurality of logic channels in a slidelink, and data transmission reliability in the sidelink transmission mode can be ensured.

Description

technical field [0001] The present application relates to communication technologies, and in particular to a method and device for repeated data transmission. Background technique [0002] With the development of communication technology, device-to-device (D2D) communication, vehicle-to-vehicle (V2V) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-infrastructure / network ( Vehicle to infrastructure / network (V2I / N) communication is a technology for direct communication between terminal devices. Among them, V2V, V2P and V2I / N are collectively referred to as V2X, that is, the vehicle communicates with anything. [0003] In the long term evolution (long term evolution, LTE) V2X standard and D2D communication standard formulated by the 3rd Generation Partnership Project (3GPP), two communication methods are provided. The first communication method is to use direct connection Link (sidelink, SL) to communicate, so that the terminal equipment can communicate di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W76/10H04W76/20H04L45/24
CPCH04W28/0289H04L45/24H04W76/14H04W76/15H04W76/27H04W72/02H04W72/1273H04W80/02H04W80/08H04W72/566
Inventor 刘航曹振臻于映辉李明超
Owner HUAWEI TECH CO LTD
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