ts_125331v120300p

3GPP TS 25.331 version 12.3.0 Release 12
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ETSI TS 125 331 V12.3.0 (2014-10)
4.3 Protocol specification principles
This protocol specification is based on the applicable general guidelines given in [14].
In this specification, a notation of variables is used. The variables are defined in subclause 13.4. Variables are typically
used to represent a status or a result of an action, such as reception of an information element in a message, which is
used to specify a behaviour somewhere else in the specification, such as when setting the value of an information
element in a transmitted message. The variables only serve the purpose of specifying the protocol, and do not therefore
impose any particular implementation.
When specifying the UE behaviour at reception of messages, the behaviour that is tied to reception or non-reception of
individual information elements, and in some cases combinations of information elements, is specified in one location
(subclause 8.6).
5 RRC Functions and Services provided to upper
layers
5.1 RRC Functions
The RRC performs the functions listed below. A more detailed description of these functions is provided in [2]:
- Broadcast of information related to the non-access stratum (Core Network);
- Broadcast of information related to the access stratum;
- Establishment, maintenance and release of an RRC connection between the UE and UTRAN;
- Establishment, reconfiguration and release p-t-p of Radio Bearers;
- Establishment, reconfiguration and release of p-t-m Radio Bearers;
- Assignment, reconfiguration and release of radio resources for the RRC connection;
- RRC connection mobility functions;
- Control of requested QoS;
- UE measurement reporting and control of the reporting;
- Outer loop power control;
- Control of ciphering;
- Slow DCA (TDD mode);
- Paging;
- Initial cell selection and cell re-selection;
- Arbitration of radio resources on uplink DCH;
- RRC message integrity protection;
- Timing advance (TDD mode);
- CBS control;
- MBMS control.
ETSI