name: SDAP
full_form: Service Data Adaptation Protocol
context: SDAP header: - construct an end-marker control PDU, as specified in the subclause 6.2.3, for the QoS flow; - map the end-marker control PDU to the DRB according to the stored QoS flow to DRB mapping rule; - submit the end-marker control PDU to the lower layers; - store the QoS flow to DRB mapping of the DL SDAP data PDU as the QoS flow to DRB mapping rule for the UL. [TS 37.324 clause 6.2.2.1] An SDAP PDU consists only of a data field and does not consist of any SDAP header, as described in Figure 6.2.2.1-1. Figure 6.2.2.1-1: SDAP Data PDU format without SDAP header [TS 37.324 clause 6.2.2.2] Figure 6.2.2.2 â 1 shows the format of SDAP Data PDU of DL with SDAP header being configured. Figure 6.2.2.2-1: DL SDAP Data PDU format with SDAP header [TS 37.324 clause 6.2.2.3] Figure 6.2.2.3 â 1 shows the format of SDAP Data PDU of UL with SDAP header being configured. Figure 6.2.2.3-1: UL SDAP Data PDU format with SDAP header [TS 37.324 clause 6.2.3] Figure 6.2.3 â 1 shows the format of
description: The Service Data Adaptation Protocol (SDAP) is a protocol used in telecommunications to adapt service data for transmission over different networks and interfaces. It is responsible for mapping QoS flows to DRBs, handling PDU headers, and constructing end-marker control PDUs.
explanation: SDAP is classified as a Protocol because it defines a set of rules and procedures for the exchange of data between network elements. Its functions, such as mapping QoS flows, handling PDU headers, and constructing end-marker control PDUs, are characteristic of protocols that govern data transmission.
section_title: 7.1.4.1SDAP Data Transfer and PDU Header Handling UL/DL
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