7.2.8 CSI-RS Activation / Deactivation

36.2133GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Physical layer proceduresRelease 17TS

For a serving cell and UE configured in transmission mode 9 or 10 and for a CSI process the UE configured with higher layer parameter eMIMO-Type and eMIMO-Type is set to ‘CLASS B’,

– if the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList, the higher layer parameter csi-RS-NZP-mode is set to aperiodic, and number of configured CSI-RS resources in csi-RS-ConfigNZP-ApList is more than 2 and more than the number of activated CSI-RS resources N given by the higher layer parameter activatedResources for the CSI process, or

– if the higher layer parameter csi-RS-NZP-mode is set to multiShot,

– when a UE receives an activation command [8] for CSI-RS resource(s) associated with the CSI process in subframe n, the corresponding actions in [8] and UE assumption on CSI-RS transmission corresponding to the activated CSI-RS resource(s) shall be applied no later than the minimum requirement defined in [10] and no earlier than subframe n+8, where is the number of activated CSI-RS resources for the CSI process, and is the maximum number of CSI-RS resources supported by the UE for a CSI process of the serving cell given by the higher layer parameter nMaxResource-r14 included in the MIMO-UE-ParametersPerTM-r14xy,

– when a UE receives a deactivation command [8] for activated CSI-RS resource(s) associated with the CSI process in subframe n, the corresponding actions in [8] and UE assumption on cessation of CSI-RS transmission corresponding to the deactivated CSI-RS resource(s) shall apply no later than the minimum requirement defined in [10] and no later than subframe n+8.