描述了用于无线通信的技术。 一种用于基站处的无线通信的方法包括：竞争对共享无线电频谱频带的共享信道的接入，以及在共享信道中复用第一分量载波（CC）通信窗口和第二CC通信窗口。 第一CC通信窗口的正交频域复用（OFDM）符号的持续时间可以不同于第二CC通信窗口的OFDM符号的持续时间，并且复用可以在赢得对共享的访问争用时发生在共享信道上 渠道。 一种用于用户设备（UE）处的无线通信的方法包括监测共享无线电频谱频带的共享信道以用于第一CC通话之前（LBT）帧，并且在第二CC前导码中接收第一CC CC LBT帧。

Techniques are described for wireless communication. One method for the radio communication in the base station further comprising: contending for access to the shared channel of the shared radio frequency spectrum band, for multiplexing the first component carrier (CC) communication window and claim 2 CC communication window in a shared channel and a step. The it may be one which varies the duration of the OFDM symbols of the first 2 CC communication window duration of an orthogonal frequency domain multiplexed (OFDM) symbols of the CC communication window, multiplexing upon winning the contention for access to a shared channel It may occur on the shared channel. One method for wireless communication at the user equipment (UE) is the 1 CC LBT (Listen Before Talk) in step a, the 2 CC preamble to monitor the shared channel of the shared radio frequency spectrum band for the frame, a 1 CC and a step of receiving an indication of LBT frame.