1 General
3GPP44.001General aspects and principlesMobile Station - Base Station System (MS - BSS) interfaceRelease 17TS
1.1
A GSM PLMN supports a wide range of services which a user accesses by a standard set of interfaces at a mobile station (MS). The mobile station is connected to the PLMN fixed infrastructure via a radio path to a base station, as shown in figure 1.
1.2
The MS-BSS interface on this radio path is specified in the 24- and 44-series of Technical Specifications in such a way as to permit user and network technologies and configurations to evolve separately.
+——–+ +———+
| | radio path | | PLMN
MMI | | MS-BSS | | –+— fixed
—-+—-| MS +—————| BSS |infrastructure
| | interface | | |
| |(24-/44-series)| |
+——–+ +———+
Figure 1: Basic interfaces for user access for a GSM PLMN
1.3
The principles and procedures for the man-machine interface (MMI) to the MS are described in Technical Specification 3GPP TS 22.030. The user may also use standard terminal interfaces within the MS. The reference configuration for the access is described in Technical Specification 3GPP TS 24.002.