Artiza LTE eNB Test Solutions
C-plane Protocol Procedures
C-plane protocol procedure test is mandatory, and it includes not only functional testing but also the testing under load condition. There are multiple protocol procedures in C-plane, and all the procedures are covered in this section. Equipment venders test RRC connection establishment/release procedure as functional test in early phase of eNB system testing.
The first step to evaluate the C-place protocol is to test the basic function, such as connection establishment/release procedure for LTE eNB. In RRC protocol in E-UTRAN, there are only two states, RRC_IDLE and RRC_CONNECTED (shown in Figure 24), so that connection can be set up faster. Connection establishment and release procedure initiated by UE on Uu and S1 interface is shown in Figure 25. Paging (Connection establishment and release procedure initiated by E-UTRAN) on Uu and S1 interface is shown in Figure 26. RRC protocol procedure is described in details in 3GPP TS36.331. In order to evaluate C-plane performance of LTE eNB, the reliable transition between these two states is critical.