Service Data Adaptation Protocol is a protocol specified by 3GPP. The SDAP sublayer is configured by RRC. SDAP maps the QoS flow to the Bearer service.
References
"Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Service Data Adaptation Protocol (SDAP) specification". November 2020. https://www.etsi.org/deliver/etsi_ts/137300_137399/137324/16.02.00_60/ts_137324v160200p.pd ↩
Chih-Lin I; Junshuai Sun; Xingyu Han; Yingying Wang; Xueyan Huang (March 2018). "A Functional Overview on CUDA and DUDA". IEEE 5G Tech Focus. 2 (1). IEEE. https://futurenetworks.ieee.org/tech-focus/march-2018/functional-overview-of-CUDA-and-DUDA ↩
Mauro Boldi; Olav Queseth; Patrick Marsch; Ömer Bulakci, eds. (2018). 5G System Design, Architectural and Functional Considerations and Long Term Research. Wiley. p. 121. ISBN 9781119425120. 9781119425120 ↩