name: SRAP
full_form: Sidelink Relay Adaptation Protocol
context: interface delivers SRAP Data PDUs to the transmitting part on the collocated SRAP entity of Uu interface. As an alternative, the receiving part may deliver SRAP SDUs to the transmitting part on the collocated SRAP entity. When passing SRAP SDUs, the receiving part removes the SRAP header and the transmitting part of the relay UE adds the SRAP header with the same SRAP header content as carried on the SRAP Data PDU header prior to removal. Passing SRAP SDUs in this manner is therefore functionally equivalent to passing SRAP Data PDUs, in implementation. The following specification therefore refers to the passing of SRAP data packets. - For UL data packet corresponding to SRB0, the receiving part on the SRAP entity of PC5 interface delivers SRAP SDUs to the transmitting part on the collocated SRAP entity of Uu interface, and the transmitting part on the SRAP entity of Uu interface adds the SRAP header in accordance with clause 5.3.3. - For DL data packet corresponding to SRB0, the
description: The Sidelink Relay Adaptation Protocol (SRAP) is a protocol used for adapting sidelink relay communications in 5G networks. It enables the transmission of SRAP Data PDUs and SDUs between different entities, such as the transmitting part on the collocated SRAP entity of Uu interface and the receiving part on the SRAP entity of PC5 interface.
explanation: SRAP is classified as a Protocol based on its role in adapting sidelink relay communications, as highlighted by the context. The text from 3GPP TS 38.351 describes how SRAP entities interact with each other and pass SRAP data packets, which indicates that SRAP is a protocol governing these interactions.
section_title: 4.2.2SRAP entities
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