Data transmission method, data transmission device and communication equipment

Abstract

The invention provides a data transmission method, a data transmission device and communication equipment. The data transmission method applied to a terminal comprises the following steps: generatinga channel access request signaling, wherein the channel access request signaling comprises a selected identification bit of a transmission mode according to the number of the plurality of data framesin one transmission opportunity when a plurality of data frames need to be sent, wherein when the identification bit is a first value, the identification sends all the data in order and then receivesall acknowledgement messages in order, and when the identification bit is a second value, the identification sends any data and then sends the next data after receiving the acknowledgement message corresponding to any data, and the transmission opportunities comprise an uplink resource transmission opportunity and a downlink resource transmission opportunity; and sending the channel access requestsignaling to the base station. The terminal can select a proper data transmission mode under the unlicensed spectrum, so that the utilization efficiency of the spectrum is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular, to a data transmission method, a data transmission device and communication equipment. Background technique [0002] Currently, the research and development of the 5th generation mobile communication system (5G) is in full swing. According to future application requirements, the 5G system needs to support a variety of business scenarios, including eMBB (Enhanced Mobile Broadband, enhanced mobile broadband), URLLC (Ultra-reliable and Low Latency Communications, high reliability and low delay) and MMTC (Massive Machine Type of Communication, large-scale machine communication). Since licensed spectrum resources are very limited, unlicensed spectrum will also be used for data transmission in the 5G standard, which can provide a larger transmission bandwidth than licensed spectrum, especially for eMBB application scenarios with large amounts of data. However, the dis...

AI Technical Summary

Problems solved by technology

As shown in Figure 1, under the LBT mechanism, UE (User Equipment, user terminal) sends CARQ (Channel Access Request, channel access request) signaling to gNB (base station), and gNB feeds back CARP (Channel Access Response, channel access response) signaling, where G means under the LBT mechanism Uplink and downlink switching points, MCOT (Maximum Channel OccupancyTime) is the maximum channel occupation time. The establishment of the handshake mechanism is also to prevent the subsequent data transmission from being disturbed. In the process of standard formulation, there are generally two data transmission methods, but how to choose transmission way, but not clearly defined

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