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1. WO2020062101 - DATA TRANSMISSION METHOD AND APPARATUS FOR DIRECT COMMUNICATION, DEVICE, AND SYSTEM

Publication Number WO/2020/062101
Publication Date 02.04.2020
International Application No. PCT/CN2018/108487
International Filing Date 28.09.2018
IPC
H04W 4/40 2018.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
30Services specially adapted for particular environments, situations or purposes
40for vehicles, e.g. vehicle-to-pedestrians
CPC
H04W 4/021
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
02Services making use of location information
021Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
H04W 4/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
H04W 4/40
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
30Services specially adapted for particular environments, situations or purposes
40for vehicles, e.g. vehicle-to-pedestrians [V2P]
H04W 4/44
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
30Services specially adapted for particular environments, situations or purposes
40for vehicles, e.g. vehicle-to-pedestrians [V2P]
44for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
H04W 4/46
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
30Services specially adapted for particular environments, situations or purposes
40for vehicles, e.g. vehicle-to-pedestrians [V2P]
46for vehicle-to-vehicle communication [V2V]
H04W 76/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
76Connection management
10Connection setup
14Direct-mode setup
Applicants
  • 北京小米移动软件有限公司 BEIJING XIAOMI MOBILE SOFTWARE CO. , LTD. [CN]/[CN]
Inventors
  • 赵群 ZHAO, Qun
Agents
  • 北京三高永信知识产权代理有限责任公司 BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO. , LTD.
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) DATA TRANSMISSION METHOD AND APPARATUS FOR DIRECT COMMUNICATION, DEVICE, AND SYSTEM
(FR) PROCÉDÉ ET APPAREIL DE TRANSMISSION DE DONNÉES POUR COMMUNICATION DIRECTE, DISPOSITIF ET SYSTÈME
(ZH) 直连通信的数据传输方法、装置、设备及系统
Abstract
(EN)
The present disclosure relates to the field of communications and provides a data transmission method and apparatus for direct communication, a device, and a system. The method comprises: a first vehicle-to-everything device determines a destination receiving geographic position of a user data packet and generates a MAC PDU corresponding to the user data packet, the MAC PDU carrying the destination receiving geographic position; the first vehicle-to-everything device encodes and modulates the MAC PDU to obtain physical layer data, and sends the physical layer data on a target time-frequency resource. A second vehicle-to-everything device compares the destination receiving geographic position carried by the MAC PDU to determine whether to receive the user data packet, without establishing a multicast group in advance and determining a multicast address, so that communication delay is reduced, and communication efficiency is improved.
(FR)
L'invention se rapporte au domaine des communications et concerne un procédé et un appareil de transmission de données pour la communication directe, un dispositif, et un système. Le procédé comprend les étapes suivantes : un premier dispositif V2X détermine une position géographique de réception de destination d'un paquet de données d'utilisateur et génère une unité de données du protocole MAC correspondant au paquet de données d'utilisateur, l'unité de données du protocole MAC portant la position géographique de réception de destination ; le premier dispositif V2X code et module l'unité de données de protocole MAC pour obtenir des données de couche physique, et envoie les données de couche physique sur une ressource temps-fréquence cible. Un second dispositif V2X compare la position géographique de réception de destination portée par l'unité de données de protocole MAC pour déterminer l'opportunité de recevoir le paquet de données d'utilisateur, sans établir un groupe de multidiffusion à l'avance et sans déterminer une adresse de multidiffusion, de manière à réduire le retard de communication et à améliorer l'efficacité de communication.
(ZH)
本公开提供了一种直连通信的数据传输方法、装置、设备及系统,属于通信领域。所述方法包括:第一车联网设备确定用户数据包的目标接收地理位置,并生成用户数据包对应的MAC PDU,MAC PDU携带有目标接收地理位置;第一车联网设备将MAC PDU进行编码和调制,得到物理层数据,并将物理层数据在目标时频资源上进行发送。第二车联网设备通过对比MAC PDU携带的目标接收地理位置,判断是否接收用户数据包,不需要预先建立组播组并确定组播地址,减少了通信的延时,从而提高了通信效率。
Also published as
CN201880001538.0
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