Enhanced reservation signal for cellular communication in unlicensed spectrum
摘要
說明書
The LBT procedure may include performing carrier sensing (which may also be referred to as energy sensing) to monitor the unlicensed frequency channel for availability and counting down a randomly selected backoff counter value in each Wi-Fi slot that the medium is available after an initial defer period, according to some embodiments. If the medium becomes unavailable (e.g., due to another device transmitting on the medium) before the LBT procedure is complete, the BS may pause the LBT procedure, and resume counting down the backoff counter value after the medium is available for at least another defer period. Once the backoff counter value reaches 0, the LBT procedure may be considered to have been successfully completed. Note that while the preceding example may represent one possible LBT procedure, variations and alternative LBT procedures are also possible.
