Section: 5.10 Semi-Persistent Scheduling
Content: Except for NB-IoT, multiple UL Semi-Persistent Scheduling configurations are supported per Serving Cell. For NB-IoT, UL Semi-Persistent Scheduling configuration is only supported for BSR per Serving Cell. On one Serving Cell, multiple UL configurations can be active simultaneously only for the same TTI length. Multiple UL/DL configurations can also be active simultaneously on different Serving Cells. When Semi-Persistent Scheduling is enabled by RRC, the following information is provided, as specified in TS 36.331[ Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification ]  [8]: - Semi-Persistent Scheduling C-RNTI or UL Semi-Persistent Scheduling V-RNTI; - Uplink Semi-Persistent Scheduling interval semiPersistSchedIntervalUL if short TTI in UL for the SpCell is not configured or semiPersistSchedIntervalUL-sTTI in UL for the SpCell if short TTI is configured and number of empty transmissions before implicit release implicitReleaseAfter, if Semi-Persistent Scheduling with Semi-Persistent Scheduling C-RNTI is enabled for the uplink; - Uplink Semi-Persistent Scheduling interval semiPersistSchedIntervalUL and number of empty transmissions before implicit release implicitReleaseAfter for each SPS configuration, if Semi-Persistent Scheduling with UL Semi-Persistent Scheduling V-RNTI is enabled for the uplink; - Whether twoIntervalsConfig is enabled or disabled for uplink, only for TDD; - Downlink Semi-Persistent Scheduling interval semiPersistSchedIntervalDL if short TTI in DL for the SpCell is not configured or semiPersistSchedIntervalDL-sTTI if short TTI in DL for the SpCell is configured and number of configured HARQ processes for Semi-Persistent Scheduling numberOfConfSPS-Processes, if Semi-Persistent Scheduling is enabled for the downlink; - sTTIStartTimeDl if short TTI in DL for the SpCell is configured and sTTIStartTimeUl if short TTI in UL for the SpCell is configured; When Semi-Persistent Scheduling for uplink or downlink is disabled by RRC, the corresponding configured grant or configured assignment shall be discarded. Semi-Persistent Scheduling is not supported for RN communication with the E-UTRAN in combination with an RN subframe configuration. NOTE: When eIMTA is configured, if a configured uplink grant or a configured downlink assignment occurs on a subframe that can be reconfigured through eIMTA L1 signalling, then the UE behaviour is left unspecified.