1. 3GPP R16: http://www.3gpp.org/DynaReport/status-report.htm#deadRel-16
2. 3GPP R15: http://www.3gpp.org/DynaReport/status-report.htm#deadRel-15
3. 3GPP: http://www.3gpp.org/DynaReport/MissingSpecs.htm
4. Huawei Technologies Co., Ltd.: (For Customer) 5G RAN6.1 Feature Documentation China Unicom (HDX)-CN,42-43(2021)
5. Huawei Technologies Co., Ltd.: (For Customer) 3900 & 5900 Series Base Station Product Documentation (V100R018C00_02, China Unicom) (HDX)-CN, 324-348 (2021)