The application provides an uplink synchronization method and device. The method is applied to the communication system under the LBT mechanism in the unlicensed frequency band. The method includes: the network device determines a time adjustment amount, and the time adjustment amount indicates the adjustment value of the start time of the uplink subframe occupied by one or more terminal devices in the cell corresponding to the network device sending data to the network device; the network device will The time adjustment amount is transmitted to the one or more terminal devices. Through the scheme provided by the invention, the mutual interference of the uplink transmission of the terminal equipment working in the LBT mechanism on the license free frequency band can be avoided.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。
【技术保护点】
PCT国内申请，权利要求书已公开。/n
【技术特征摘要】
【国外来华专利技术】PCT国内申请，...
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