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
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Information Element/Group name |
Need |
Multi |
Type and reference |
Semantics description |
Version |
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Message Type |
MP |
Message Type |
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Radio Bearer IEs |
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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 |
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UE information elements |
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Initial UE identity |
MP |
Initial UE identity 10.3.3.15 |
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Establishment cause |
MP |
Establishment cause 10.3.3.11 |
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Protocol error indicator |
MD |
Protocol error indicator 10.3.3.27 |
Default value is FALSE |
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>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 |
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Domain indicator |
MP |
CN domain identity 10.3.1.1 |
REL-6 |
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CS Call type |
CV-CS-Domain |
Enumerated (speech, video, other) |
One spare value is needed |
REL-6 |
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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 |
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MBMS Selected Services |
OP |
MBMS Selected Services Short 10.3.9a.7d |
REL-6 |
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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 |
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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 |
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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 |
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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 |
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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 |
|
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DPCCH Discontinuous Transmission support |
OP |
Enumerated (TRUE) |
The absence of this IE indicates that the UE does not support DPCCH Discontinuous Transmission |
REL-7 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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. |
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Measurement information elements |
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Measured results on RACH |
OP |
Measured results on RACH 10.3.7.45 |
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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 |
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REL-5, |
REL-5 |
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REL-6, |
REL-6 |
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REL-7, |
REL-7 |
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REL-8, |
REL-8 |
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REL-9, |
REL-9 |
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REL-10, |
REL-10 |
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REL-11, |
REL-11 |
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REL-12, |
REL-12 |
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REL-13, |
REL-13 |
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REL-14, |
REL-14 |
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REL-15, |
REL-15 |
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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.
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Condition |
Explanation |
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CS-Domain |
This IE is mandatory present if the IE "Domain indicator" has the value "CS domain". Otherwise it is not needed. |
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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.