10.2.39 RRC CONNECTION REQUEST

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

RRC Connection Request is the first message transmitted by the UE when setting up an RRC Connection to the network.

RLC-SAP: TM

Logical channel: CCCH

Direction: UE  UTRAN

Information Element/Group name

Need

Multi

Type and reference

Semantics description

Version

Message Type

MP

Message Type

Radio Bearer IEs

Predefined configuration status information

MP

Boolean

TRUE indicates the UE has all pre- configurations stored with the same value tag as broadcast in the cell in which the RRC connection establishment is initiated

REL-5

UE information elements

Initial UE identity

MP

Initial UE identity 10.3.3.15

Establishment cause

MP

Establishment cause 10.3.3.11

Protocol error indicator

MD

Protocol error indicator 10.3.3.27

Default value is FALSE

>UE Specific Behaviour Information 1 idle

OP

UE Specific Behaviour Information 1 idle

10.3.3.51

This IE shall not be included in this version of the protocol

Domain indicator

MP

CN domain identity 10.3.1.1

REL-6

CS Call type

CV-CS-Domain

Enumerated (speech, video, other)

One spare value is needed

REL-6

UE capability indication

OP

Enumerated (HS-DSCH, HS-DSCH+E-DCH)

Absence of this IE implies that neither HS-DSCH nor E-DCH are supported by the UE

REL-6

MBMS Selected Services

OP

MBMS Selected Services Short 10.3.9a.7d

REL-6

UE Mobility State Indicator

MD

Enumerated (High-mobilityDetected)

Absence of this IE implies that, according to [4] either the High mobility state is not applicable or it has not been detected by the UE.

REL-7

Support for F-DPCH

CV-SupportForHS

Enumerated (TRUE)

Presence of this information element indicates that F-DPCH is supported by the UE.

Absence of this information element indicates that F-DPCH is not supported

REL-6

Support for Enhanced F-DPCH

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support enhanced F-DPCH

REL-7

HS-PDSCH in CELL_FACH

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support HS-PDSCH reception in CELL_FACH state.

Note 1

REL-7

MAC-ehs support

OP

Enumerated (TRUE)

The presence of this IE indicates that UE supports MAC-ehs, octet aligned transport block table, the use of special value of HE field to indicate end of an SDU for RLC AM and different HS-SCCHs in contiguous TTIs. The absence of this IE indicates that the UE does not support either MAC-ehs, octet aligned transport block table or the use of special value of HE field to indicate end of an SDU for RLC AM or different HS-SCCHs in contiguous TTIs.

REL-7

DPCCH Discontinuous Transmission support

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support DPCCH Discontinuous Transmission

REL-7

Support of common E-DCH

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support E-DCH enhanced random access in CELL_FACH state and Idle mode.

Note 1

REL-8

Multi cell support

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support dual cell operations on adjacent frequencies

REL-8

Dual cell MIMO support

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support dual cell with MIMO operation on adjacent frequencies.

REL-9

More than two cell or MIMO mode with four transmit antennas support

OP

Enumerated (higher rate, lower rate)

For FDD, the absence of this IE indicates that the UE does not support multi-cell operation on more than two cells.

For 1.28 Mcps TDD, the absence of this IE indicates that the UE does not support MU-MIMO. If present, higher rate indicates uplink and downlink MU-MIMO, lower rate indicates uplink MU-MIMO

REL-10

For FDD, the absence of this IE indicates that the UE does not support multi-cell operation on more than two cells or MIMO mode with four transmit antennas.

For 1.28 Mcps TDD, the absence of this IE indicates that the UE does not support MU-MIMO. If present, higher rate indicates uplink and downlink MU-MIMO, lower rate indicates uplink MU-MIMO

REL-11

Pre-redirection info

OP

Pre-redirection info

10.3.3.25a

The presence of this IE indicates the UE support of radio access technologies that the UE could be directed to, and that the UE was not redirected from EUTRA.

REL-8

Support of MAC-i/is

OP

Enumerated (TRUE)

The absence of this IE indicates that the UE does not support MAC-i/is operation.

REL-8

Support of SPS operation

OP

Enumerated (TRUE)

For 1.28 Mcps TDD only.

The absence of this IE indicates that the UE does not support SPS operation.

REL-8

Support for CS Voice over HSPA

OP

Enumerated (TRUE)

The IE indicates the UE’s support for CS Voice over HSPA, if set.

REL-8

System Information Container Stored Indicator

OP

Enumerated (TRUE)

The presence of this IE indicates that the UE is accessing the cell using System Information stored in the variable SYSTEM_INFORMATION_CONTAINER

REL-9

Support of the first Frequency Band

OP

Enumerated (TRUE)

The presence of this IE indicates the UE supports the 1st band broadcased in SIB5/5bis.

For 1.28 Mcps TDD, the IE also indicates support band e if no band is broadcasted in SIB5/5bis.

REL-10

Support of the second Frequency Band

OP

Enumerated (TRUE)

The presence of this IE indicates the UE supports the 2nd band broadcased in SIB5/5bis.

For 1.28 Mcps TDD, the IE also indicates support band f if no band is broadcasted in SIB5/5bis.

REL-10

CSFB Indication

OP

Enumerated (TRUE)

The presence of this IE indicates that the RRC Connection Request is due to CSFB call initiated in E-UTRA.

Measurement information elements

Measured results on RACH

OP

Measured results on RACH 10.3.7.45

Access stratum release indicator

MP

Enumerated (REL-4,

Absence of the IE implies R99.

The IE also indicates the release of the RRC transfer syntax supported by the UE.

3 spare values are needed.

REL-4

REL-5,

REL-5

REL-6,

REL-6

REL-7,

REL-7

REL-8,

REL-8

REL-9,

REL-9

REL-10,

REL-10

REL-11,

REL-11

REL-12,

REL-12

REL-13,

REL-13

REL-14,

REL-14

REL-15,

REL-15

REL-16)

REL-16

NOTE 1: For 1.28 Mcps TDD, UE supporting HS-PDSCH in CELL_FACH always supports E-DCH enhanced random access in CELL_FACH state and Idle mode, and vice versa.

Condition

Explanation

CS-Domain

This IE is mandatory present if the IE "Domain indicator" has the value "CS domain". Otherwise it is not needed.

SupportForHS

This IE is mandatory present if the UE supports HS-PDSCH, otherwise it is not needed.

If the encoded message does not fill a transport block, the RRC layer shall insert padding according to subclause 12.1.