Methods on early SRS transmission for ltm in fd systems

Abstract

A wireless transmit / receive unit (WTRU) may be configured to receive a first message comprising a candidate cell identification (ID) and a synchronization signal block (SSB) configuration for a candidate cell, and configured to receive a second message that comprises a first set of SRS configurations, and configured to receive a third message over a physical downlink control channel (PDDCH) that may include SRS indications, and configured to determine a second set of SRS configurations based on the SRS indications in the third message and based on the target cell ID being different than a cell ID of the serving cell. The second set of SRS configurations may comprise at least an uplink spatial filter, an SRS power, and a timing advance. The WTRU may be configured to send, to a target cell, based on the third message, an SRS transmission, using the determined second set of SRS configurations.

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