name: WT
full_form: WLAN Termination as used in TS 36.300 [30]
context: The eNB shall associate a 16-bit counter, WT Counter, with the EPS AS security context. The WT Counter is used when computing the S-KWT. The UE and the eNB shall treat the WT Counter as a fresh input to S-KWT derivation. That is, the UE assumes that the eNB provides a fresh WT Counter for each S-KWT derivation and does not need to verify the freshness of the WT Counter. NOTE: The value of the WT Counter is integrity and replay protected when sent over the air in the RRC signaling, and so force re-use of the same WT Counter and computation of the same S-KWT is prevented. The eNB maintains the value of the counter WT Counter for a duration of the current AS security context between UE and eNB. The UE does not need to maintain the WT Counter after it has computed the S-KWT since the eNB provides the UE with the current WT Counter value when the UE needs to compute a new S-KWT. The eNB that supports the LWA DRB offload shall initialize the WT Counter to '0' when the KeNB in the associated
description: The WLAN Termination (WT) Counter is a 16-bit parameter used in conjunction with the EPS AS security context for computing the S-KWT. It is maintained by the eNB and provided to the UE when necessary, ensuring freshness and preventing replay attacks.
explanation: The WT Counter is classified as a Parameter due to its role as a critical network attribute for operation within the EPS AS security context, specifically in the computation of the S-KWT.
section_title: G.2.4.1	WT Counter maintenance
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biotag_Description: O,B-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Network,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Device,O,O,O,O,O,O,O,O