8.4 X2 Release

36.4233GPPEvolved Universal Terrestrial Radio Access Network (E-UTRAN)Release 17TSX2 Application Protocol (X2AP)

8.4.1 General

The purpose of the X2 Release procedure is to inform an eNB that the signalling (i.e. SCTP) connection to a peer eNB is unavailable.

8.4.2 Successful Operation

Figure 8.4.2-1: X2AP Release, successful operation

eNB₁ initiates the procedure by sending the X2 RELEASE message to eNB₂. Upon the reception of X2 RELEASE message, eNB₂ shall consider that the signalling connection to an eNB indicated by the eNB ID IE is unavailable. eNB₂ may delete all the context information related to the indicated eNB.

8.4.3 Unsuccessful Operation

Not Applicable

8.4.4 Abnormal Condition

Not Applicable.