Brevet : EP3576481 - PROCÉDÉ DE TRANSMISSION DE DONNÉES, ET ÉQUIPEMENT D'UTILISATEUR

Titre

PROCÉDÉ DE TRANSMISSION DE DONNÉES, ET ÉQUIPEMENT D'UTILISATEUR

N° et date de publication de la demande

EP3576481 - 04/12/2019

Type de la demande

A1

N° et date de dépôt

EP17897875.5 - 12/06/2017

N° et date de priorité

CN201710109477 - 27/02/2017

Famille de brevets

CN108886816A ; WO2018152985A1 ; EP3576481A1 ; US2020236708A1

Abrégé

Embodiments of this application provide a data sending method and apparatus. The data sending method in the embodiments of this application includes: determining, by user equipment, a narrowband time-frequency resource scheduled by a base station; performing, by the user equipment, clear channel assessment CCA channel detection on the narrowband time-frequency resource to obtain a channel energy value of the narrowband time-frequency resource; determining, by the user equipment, whether the channel energy value is less than a preset energy threshold; and if the channel energy value is less than the preset energy threshold, sending, by the user equipment, uplink data to the base station on the narrowband time-frequency resource. The base station schedules the narrowband time-frequency resource for the user equipment, so that the user equipment sends the uplink data on the narrowband time-frequency resource. Different user equipments may perform data transmission on different narrowband time-frequency resources. An opportunity of accessing a channel by the user equipment can be increased in a manner of performing CCA channel detection on the narrowband time-frequency resource, thereby increasing uplink time-frequency resource utilization.