Читать книгу Mobile Communications Systems Development - Rajib Taid - Страница 74

Let us consider the LTE UE ATTACH procedure shown in Figure 3.12 below, which is found in an LTE/EPS network. The ATTACH procedure and its messages are part of the EMM NAS protocol which is used by a UE to register with the LTE/EPS CN; see TS 24.301 [46]. This figure illustrates a successful ATTACH procedure and shows only the EMM message names without showing the contents of each message.

Figure 3.12 Illustration: LTE/EPS ATTACH procedure: NAS protocol messages.