name: UL-SRS
full_form: Uplink Sounding Reference Signal
context: The purpose of this procedure is to enable the LMF to request activation and deactivation of UL-SRS transmission of the target UE. Figure 8.10.3.2.3-1 shows the messaging between the LMF and the gNB to perform this procedure. Figure 8.10.3.2.3-1: Positioning Activation/Deactivation Procedure. (1) The LMF sends the NRPPa Positioning Activation Request message to the serving gNB of the target UE to request UL-SRS activation for the target UE. For a semi-persistent UL-SRS, the message includes an indication of an UL-SRS resource set to be activated and may include information that indicates the spatial relation for the semi-persistent UL-SRS resource to be activated, as listed in Table 8.10.2.4-3. For an aperiodic UL-SRS, the message may include aperiodic SRS Resource trigger list to indicate the UL-SRS resource to be activated. (2) For semi-persistent UL-SRS, the serving gNB may then activate the configured semi-persistent UL-SRS resource sets by sending the SP Positioning SRS
description: UL-SRS (Uplink Sounding Reference Signal) is a type of uplink transmission used for positioning purposes in the 5G network. It refers to the sounding reference signal sent by the user equipment (UE) to the base station (gNB) to facilitate location determination.
explanation: UL-SRS establishes a communication link between the UE and gNB, facilitating data exchange for location tracking. This direct connection between network entities classifies it as a Connection.
section_title: 8.10.3.2.3Positioning Activation/Deactivation Procedure
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