name: F1AP
full_form: F1 Application Protocol
context: 2 is given as in the Figure 9.3-2. IAB-node's integration procedure phase 1: IAB-node MT part setup 1. IAB-node2 MT part performs normal cell discovery and cell selection and sends "RRC connection request" to IAB-node1 DU part. 2. IAB-node1 DU part generates F1AP message (i.e. the initial UL RRC Message) to carry the RRC message sent from IAB-node2 MT part. 3. IAB-node1 MT part transmits the encapsulated uplink F1AP message to Donor-DU via SRB. 4. Donor-DU learns the specific message type (F1AP message of IAB-node). Then it removes the header of adaptation layer, and encapsulates the payload2 (including the F1AP message of IAB-node) in its own F1AP message. 5. Donor-DU sends its F1AP message which contains the IAB-node1's F1AP message towards the donor-CU. 6. After decapsulation of the F1AP message received from Donor-DU, Donor-CU get payload2, and obtains the "RRC connection request" message inside payload2 through further decapsulation. 7. Donor-CU sends the F1AP message (e.g. DL
description: F1 Application Protocol (F1AP) is a protocol used for communication between the Distributed Unit (DU) and Centralized Unit (CU) in a 5G network, specifically for integrating IAB-node functionality. It enables the encapsulation and transmission of RRC messages between the DU and CU.
explanation: The context describes F1AP as a set of rules governing communication between network components (DU and CU) for transmitting specific message types (RRC), which aligns with the definition of a protocol.
section_title: 9.3Integration of IAB-node
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biotag_Description: B-Protocol,I-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,B-Network Function,I-Network Function,O,O,O,O,O,O,O,B-Technology,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,B-Network Function,O,O