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Data transmission method, apparatus, equipment and system for direct communication

A data transmission method, data transmission technology, applied in the direction of digital transmission system, transmission system, wireless communication, etc., can solve the problems of not supporting physical layer hybrid automatic retransmission request, no solution, etc.

Active Publication Date: 2019-05-21
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Long Term Evolution (LTE) V2x only supports broadcast transmission at the physical layer, and does not support Hybrid Auto Repeat Request (HARQ) feedback at the physical layer
How the second terminal reports HARQ feedback to the access network equipment, there is no suitable solution yet

Method used

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  • Data transmission method, apparatus, equipment and system for direct communication
  • Data transmission method, apparatus, equipment and system for direct communication
  • Data transmission method, apparatus, equipment and system for direct communication

Examples

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Embodiment Construction

[0158] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0159] The network architecture and business scenarios described in the embodiments of the present disclosure are for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and do not constitute limitations on the technical solutions provided by the embodiments of the present disclosure. The evolution of technology and the emergence of new busin...

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Abstract

The present invention discloses a data transmission method, apparatus, equipment and system for direct connection communication, which belongs to the technical field of communication. The method comprises the steps of sending direct connection data to a second terminal through a direct connection link according to the DCI sent by an access network device by a first terminal; receiving the HARQ feedback information of the direct connection hybrid automatic retransmission request fed back by the second terminal, wherein the direct connection HARQ feedback information is used to indicate the receiving state corresponding to the direct connection data; and reporting the direct connection HARQ feedback information to the access network device. In this way, in the direct connection communicationscenario based on the access network equipment scheduling, the direct connection HARQ feedback information may be directly transmitted from the second terminal to the first terminal, and then reported by the first terminal to the access network device to ensure the success rate of information transmission and reception in the direct connection communication scenario, and improve the efficiency ofdata transmission.

Description

technical field [0001] The present disclosure relates to the technical field of communication, and in particular to a data transmission method, device, device and system for direct communication. Background technique [0002] In the Vehicle to Everything (V2X) technology, a vehicle-mounted device can communicate directly with other devices (such as other vehicle-mounted devices, roadside infrastructure, etc.) through a side link (English: sidelink). Direct communication has the characteristics of short delay and low overhead. [0003] In related technologies, the direct connection communication method based on access network device scheduling includes: the access network device sends scheduling information to the direct connection communication sender user equipment (referred to as: first terminal), the first terminal sends the direct connection data to the user equipment at the receiving end of the direct connection communication through the sidelink according to the sched...

Claims

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Application Information

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IPC IPC(8): H04W4/70H04W72/04H04L1/18H04L1/16H04L5/00
CPCH04W4/70H04L1/1812H04L1/1607H04L5/0055H04W72/23H04L5/0091H04L1/1822H04L1/1861H04L1/1864H04W4/40H04L1/1896H04L1/1854H04L5/0044H04L5/0092H04W72/0453H04W72/1263H04W72/20H04L1/1671H04L5/0042H04W72/044
Inventor 赵群
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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