Control channel transmission method and device, and storage medium
摘要
說明書
An unlicensed spectrum is a spectrum allocated by countries and regions which is available for radio device communications. The spectrum can be considered as a shared spectrum, that is, communication devices in different communication systems can use the spectrum as long as they meet regulatory requirements set by the countries or regions on the spectrum, without applying to a government for a exclusive spectrum license. In order to enable various communication systems that use the unlicensed spectrum for wireless communication to coexist friendly on this spectrum, communication devices may follow a principle of listen before talk (LBT) when communicating on the unlicensed spectrum, that is, communication devices need to perform channel listening (or called channel detection) first before transmitting a signal on a channel of the unlicensed spectrum. Only when a channel detection result is that the channel is idle, the communication device may perform signal transmission, or in other words, the communication device has obtained a channel use right. If a channel sensing result of the communication device on the unlicensed spectrum is that the channel is busy, the communication device cannot transmit the signal, or in other words, the communication device does not obtain the channel use right. Optionally, bandwidth of the LBT is 20 MHz, or an integer multiple of 20 MHz.
