1. Technical specification group services and system aspects, service accessibility (Release 9);3GPP,2010
2. Study on RAN improvements for machine type communications, (Release 11);3GPP,2011
3. Further performance evaluation of EAB information update mechanisms;3GPP,2012
4. Release 15 description; summary of rel-15 work items, (Release 15);3GPP,2019
5. Revised work item description, 2-step RACH for NR, (Release 16);3GPP,2019