name: TEID
full_form: Tunnel Endpoint Identifier
context: This procedure is used for the case that the UE moves from one cell to another cell within the same gNB-DU or for the case that intra-cell handover is performed during NR operation, and supported by the UE Context Modification (gNB-CU initiated) procedure as specified in TS 38.473 [4]. When the intra-gNB-DU handover is performed (either inter-cell or intra-cell), the gNB-CU provides new UL GTP TEID to the gNB-DU and the gNB-DU provides new DL GTP TEID to the gNB-CU. The gNB-DU shall continue sending UL PDCP PDUs to the gNB-CU using the previous UL GTP TEID until it re-establishes the RLC, and after then start sending using the new UL GTP TEID. The gNB-CU shall continue sending DL PDCP PDUs to the gNB-DU using the previous DL GTP TEID until it performs PDCP re-establishment or PDCP data recovery, and after then start sending using the new DL GTP TEID.
description: The Tunnel Endpoint Identifier (TEID) is a critical network attribute used in the context of intra-gNB-DU handover procedures. It identifies the endpoint of a tunnel, specifically for UL and DL GTP (GPRS Tunneling Protocol) connections between gNB-CU and gNB-DU.
explanation: The TEID is classified as a Parameter because it represents an essential network attribute used in handover procedures to manage the exchange of PDCP PDUs between gNB-CU and gNB-DU. The context highlights its role in identifying tunnel endpoints for UL and DL GTP connections.
section_title: 8.2.1.2Intra-gNB-DU handover
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biotag_Description: O,B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Connection,O,B-Connection,B-Protocol,O,O,O,O,O,B-Network Function,O,O