ETSI - TS 101 376-4-13
GEO-Mobile Radio Interface Specifications (Release 3); Third Generation Satellite Packet Radio Service; Part 4: Radio interface protocol specifications; Sub-part 13: Radio Resource Control (RRC) protocol; Iu Mode; GMR-1 3G 44.118
|Publication Date:||1 March 2017|
The present document specifies the procedures used at the radio interface (Reference Point GMR-1 Um, see ETSI TS 124 002 ) for Radio Resource management. The Radio Resource Control Protocol (RRC) is specified. RRC is the Radio Resource control plane protocol for Radio Resource management that is used when a MES is operating in Iu mode.
When the notations for "further study" or "FS" or "FFS" are present in the present document they mean that the indicated text is not a normative portion of the present document.
These procedures are defined in terms of messages exchanged over the control channels of the radio interface. The control channels are described in ETSI TS 101 376-4-3 .
The structured functions and procedures of this protocol and the relationship with other layers and entities are described in general terms in ETSI TS 124 007  and ETSI TS 101 376-4-7 .
Scope of the present document
The procedures currently described in the present document are for radio resource management for circuit switched and GPRS services.
ETSI TS 101 376-4-12  and ETSI TS 101 376-4-14  contains procedures for radio link control and medium access control (RLC/MAC) of packet data physical channels.
ETSI TS 101 376-4-8  contains the procedures for CN protocols.
NOTE: "layer 3" includes the functions and protocols described in the present document. The terms "data link layer" and "layer 2" are used interchangeably to refer to the layer immediately below layer 3.
Application to the interface structures
The layer 3 procedures apply to the interface structures defined in ETSI TS 101 376-4-3 . ETSI TS 101 376-4-7  gives the general description of layer 3 including procedures, messages format and error handling.
Structure of layer 3 procedures
A building block method is used to describe the layer 3 procedures.
The basic building blocks are "elementary procedures" provided by the protocol control entities of the three sublayers, i.e. radio resource management, mobility management and connection management sublayer.
Complete layer 3 transactions consist of specific sequences of elementary procedures. The term "structured procedure" is used for these sequences.