Section: 5.19 Activation/Deactivation of CSI-RS resources
Content: The network may activate and deactivate the configured CSI-RS resources of a serving cell by sending the Activation/Deactivation of CSI-RS resources MAC control element described in clause 6.1.3.14. The configured CSI-RS resources are initially deactivated upon configuration and after a handover. The MAC entity shall for each TTI: - if the MAC entity receives an Activation/Deactivation of CSI-RS resources MAC control element in this TTI on a serving cell, the MAC entity shall indicate to lower layers the information regarding the Activation/Deactivation of CSI-RS resources MAC control element: