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Data transmission method, terminal, and base station in LAA-LTE system

專(zhuān)利號(hào)
US10873940B2
公開(kāi)日期
2020-12-22
申請(qǐng)人
HUAWEI TECHNOLOGIES CO., LTD.（CN Shenzhen）
發(fā)明人
Juan Zheng; Zuomin Wu; Lei Guan; Qiang Li
IPC分類(lèi)
H04W72/04; H04W56/00; H04L5/00; H04L27/26; H04L27/00
技術(shù)領(lǐng)域
subframe,ofdm,symbols,first,cell,downlink,dmtc,data,in,symbol
地域： Guangdong

摘要

The present disclosure relates to example data transmission methods, user equipment, and access network devices in an LAA-LTE system. An example data receiving method includes determining, by user equipment, first information of a first cell. The user equipment determines a first subframe based on the first information, where a downlink data transmission length of the first subframe is less than a first threshold. The user equipment then determines a data transmission characteristic of the cell in the first subframe based on a preset condition, so as to receive, based on the data transmission characteristic, data including the first subframe. In doing so, a data transmission characteristic of a base station or a terminal is standardized, and a reference signal such as a DRS can be correctly identified.

說(shuō)明書(shū)

S112: The access network device determines a downlink data transmission length of a first subframe transmitted by a first cell, where the downlink data transmission length of the first subframe is less than a first threshold.

Exemplarily, a data transmission start position of the first subframe is on a subframe boundary, and the first subframe is a last subframe in one burst data transmission, referring to FIG. 6. In FIG. 6, the first subframe is a last subframe (a fifth subframe) in one burst data transmission when the first cell transmits data on a working carrier of the first cell.

In an embodiment of the present invention, step 112 further includes: sending, by the access network device, control information, where the control information indicates that the downlink data transmission length of the first subframe is less than the first threshold. It should be noted that, in this embodiment of the present invention, the sending, by the access network device, control information may include: sending, by a cell served by the access network device, the control information. The access network device herein may be a base station, for example, a first access network device in FIG. 4. Sending, by the first access network device, the control information may be understood as sending, by the first cell or a second cell, the control information.

權(quán)利要求

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