DATA TRANSMISSION METHOD AND SYSTEM, AND DEVICE HAVING BASE STATION FUNCTION

摘要

Provided are a data transmission method and system for when an LTE system operates using a time division duplexing mode in an unlicensed frequency band, and a device having a base station function. The data transmission method comprises: a channel monitoring sub-frame used for periodically detecting a downlink channel state is arranged in a frame structure of a time division duplexing mode; within any period, if the channel monitoring sub-frame detects that a downlink channel is in idle state, downlink data is sent via a downlink sub-frame located within the period in the frame structure, and if not, downlink data is not sent within the period.

主权项

1. A method for operating an Long Term Evolution (LTE) system in an unlicensed frequency band based on a Time Division Duplex (TDD) mode for a device configurable as a base station, comprising:
arranging, by a first device, a channel monitoring sub-frame for periodically detecting a downlink channel state in a frame structure of the TDD mode, wherein the first device is configurable as a first base station; within a period, determining whether a downlink channel is in an idle state; based on a determination that the downlink channel is in the idle state, transmitting downlink data via a downlink sub-frame within the period, wherein the downlink sub-frame is located in the frame structure of the TDD mode; and based on a determination that the downlink channel is not in the idle state, transmitting no downlink data within the period.