The SDAP layer in 5G ensures efficient data delivery. It maps data priorities (QoS) to radio channels, compresses packet headers for bandwidth savings, and interacts with the PDCP layer for optimized data handling. Primarily used in Standalone 5G deployments, SDAP offers granular control over data flow compared to previous generations.

SDAP, crucial for 5G data efficiency, performs three main tasks:

1. QoS Flow Mapping: It prioritizes data by mapping it (based on QoS) to specific radio channels.
2. Packet Header Compression: It shrinks packet headers, saving bandwidth for more data transmission.
3. PDCP Collaboration: It works with PDCP to optimize data handling for different traffic types.

Primarily used in Standalone 5G, SDAP offers finer control over data flow compared to prior generations.