User terminal and radio communication method
摘要
說明書
Also, for a prohibit timer for common use between long TTIs and short TTIs, a prohibit timer expiration time of 5 ms is configured in the UE. In the UE, an SR is triggered at the time of first subframe #0.
In this case, the UE transmits the SR using the PUCCH in first subframe #0, and starts the prohibit timer. Although subframe #5, sTTI #2 and sTTI #7 are SR possibilities, since the prohibit timer is still running, even if the UE has data to transmit, the UE does not transmit SRs at these timings.
The prohibit timer expires at the end of subframe #5, so the UE transmits an SR in sTTI #12, using the sPUCCH, and starts the prohibit timer. Although the next subframe #0, sTTI #17 and subsequent sTTI #2 are SR possibilities, the prohibit timer is running, so the UE does not transmit SRs at these timings.
As described above, according to embodiment 1.3.1, the UE can transmit an SR using one of the PUCCH and the sPUCCH that becomes available at an earlier timing.
In embodiment 1.3.2, independent SR procedures are used for long TTIs and for short TTIs, separately.
