7 Functions of M3AP

36.4443GPPEvolved Universal Terrestrial Radio Access Network (E-UTRAN)M3 Application Protocol (M3AP)Release 17TS

The M3AP protocol provides the following functions:

– Session Management. This overall functionality is responsible for starting, stopping and updating MBMS sessions.

– Reset functionality to ensure a well defined initialisation on the M3 interface.

– Error Indication functionality to allow a proper error reporting/handling in cases where no failure messages are defined.

– M3 Setup functionality for initial M3 interface setup for providing configuration information.

– MCE Configuration Update function is to update application level configuration data needed for the MCE and MME to interoperate correctly on the M3 interface.

The mapping between the above functions and M3 EPs is shown in the table below.

Table 7-1: Mapping between M3AP functions and M3AP EPs


Elementary Procedure(s)

Session Management

a) MBMS Session Start
b) MBMS Session Stop
c) MBMS Session Update

Error Indication Functionality

Error Indication

Reset Functionality


M3 Setup

M3 Setup

Configuration Update

MCE Configuration Update