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7/28/2019 W(Level1) UMTS UTRAN Interfaces 20040730 a 1[1].0
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Wireless Curriculum Development Section
ISSUE
UMTS UTRAN Interfaces
1.0
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Confidential Information of Huawei.
No Spreading without Permission. Security Level: Internal
Course Contents
Chapter 1 UTRAN Network Architecture
Chapter 2 UTRAN Interface Protocol and Functions
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No Spreading without Permission. Security Level: Internal
UMTS System Architecture
Iu
UTRAN
UE
Uu
UTRAN UMTS Terrestrial Radio Access Network
CN Core Network
UE User Equipment
CN
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No Spreading without Permission. Security Level: Internal
UTRAN System Architecture
RNS
RNC
RNS
RNC
Core Network
Node B Node B Node B Node B
Iu Iu
Iur
Iub IubIub Iub
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No Spreading without Permission. Security Level: Internal
Common Protocol Model of UTRAN Interfaces
ApplicationProtocol
DataStream(s)
ALCAP(s)
TransportNetwork
Layer
Physical Layer
SignallingBearer(s)
TransportUser
NetworkPlane
Control Plane User Plane
TransportUser
NetworkPlane
Transport NetworkControl Plane
RadioNetwork
Layer
SignallingBearer(s)
DataBearer(s)
The principle of interface protocol architecture is the logical mutual-independence between
layers and planes. Protocol layers of a specified protocol version, or even all layers in a
plane can be modified if required in the future.
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No Spreading without Permission. Security Level: Internal
Protocol Stack of UTRAN Control Plane
WCDMA L1
MS
MAC
RRC
MM / GMM
CC SM
WCDMA L1
Node B
Transport
layers
RNC
RRC
Transport
layers
Iub
Transport
layers
CN
MM / GMM
CC SM
Transport
layers
Iu
RANAP RANAP
NBAPNBAP
Uu
MAC
RLCRLC
RRM
UTRAN protocols (Access Stratum, AS)
CN protocols (Non-access Stratum, NAS)
UMTS Rel99:
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No Spreading without Permission. Security Level: Internal
Layered Structure of UMTS Bearers
TE MT UTRAN CN Iu
EDGENODE
CN
Gateway
TE
UMTS
UTRAFDD/TDDService
PhysicalBearerService
RadioBearer
Service
IuBearer
Service
BackboneNetwork
Service
Radio Access BearerService
CN BearerService
UMTS BearerService
TE/MTLocal Bearer
Service
ExternalBearer
Service
End-to-EndService
UTRAN
radio interface
Bearer service: transmission mode of ability, delay and BER information.
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No Spreading without Permission. Security Level: Internal
Course Contents
Chapter 1 UTRAN Network Architecture
Chapter 2 UTRAN Interface Protocol and Functions
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No Spreading without Permission. Security Level: Internal
UTRAN Interface Protocols and Functions
Iu Interface
Iur Interface
Iub Interface
Uu Interface
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No Spreading without Permission. Security Level: Internal
Iu Interface System Structure
Core Network (CN)UTRAN
Node B
Node B
Node B
Node B
RNC
Iu Interface
Iu-BC
Iu-CS
BC
Domain
CS
Domain
PS
Domain
Iu-PS
RNC
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No Spreading without Permission. Security Level: Internal
Iu-CS Interface Protocol Stack Structure
Q.2150.1
Q.2630.1
RANAP Iu UP Protocol
Layer
Transport
Network
Layer
Physical Layer
Transport
User
Network
Plane
Control Plane User Plane
Transport
User
Network
PlaneTransport Network
Control Plane
Radio
NetworkLayer
ATM
SSCOP
AAL5
SSCOP
SSCF-NNI
AAL2AAL5
MTP3bMTP3b
SCCP
SSCF-NNI
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No Spreading without Permission. Security Level: Internal
Iu-PS Interface Protocol Stack Structure
SSCF-NNI
SSCOP
AAL5
IP
SCTP
SCCP
SSCF-NNI
MTP3-B
M3UA
RANAPIu UP Protocol
Layer
Transport
Network
Layer
Physical Layer
Transport
User
Network
Plane
Control Plane User Plane
Transport
User
Network
PlaneTransport Network
Control Plane
RadioNetwork
Layer
TM
AAL5
IP
UDP
GTP-U
Physical Layer
ATM
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No Spreading without Permission. Security Level: Internal
Iu-BC Interface Protocol Stack Structure
Transport
Network
Layer
Radio
NetworkLayer SABP Protocol
Layer
SA Broadcast Plane
Transport
Useretwork
Plane
AAL5
IP
TCP
Physical Layer
ATM
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No Spreading without Permission. Security Level: Internal
Iu Interface Protocol Stack Structure
Physical (Full Rate E1 or STM1 Optical)
ATM Lower Layers
AAL2 AAL5 - SAAL NNI
MTP3-B IP
Q.2150
Q.2630
Q.AAL2
Frame Protocol
Unrestricted Digital
Voice Data
SCCP
RANAP
UDP
GTP-U
Packet
Bearer
CS
Bearer
PS
BearerControl
Signaling
RANAP: Radio Access Network Application Part
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No Spreading without Permission. Security Level: Internal
Iu Interface Functions(1)
Mobility Management Location Area Report
SRNS Relocation
Hard handover between RNCs and inter-system handover
Radio Access BearerRABManagement
Establishment, Modification and Release of RAB
Iu data transmission
normal data transmission abnormal data transmission
Transparent transmission of UE-CN connection information
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No Spreading without Permission. Security Level: Internal
Iu Interface Functions2
Paging
Iu Release
Security Mode Control
Overload Control Common UE IDIMSIManagement
Iu Signaling Trace Management
Iu Interface Abnormality Management
CBS(Cell Broadcast Service) Control
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No Spreading without Permission. Security Level: Internal
UTRAN Interfaces Protocols and Functions
Iu Interface
Iur Interface
Iub Interface
Uu Interface
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No Spreading without Permission. Security Level: Internal
Iur Interface Logical Model
Radio User Plane
Iur Control Plane
Drif t Radio Netwo rk System
Radio
Link
Radio
Link
Radio
Link
Iur
Control
Port
Radio
Link
Radio
Link
Radio
Link
Serving Radio Network System
Cell Cell
IurDCHDataPort
RACH/FACH
Traffic Contexts
With attributes
IurDCHDataPort
IurDSCHDataPort
IurTDD USCH
DataPort
IurDSCHDataPort
IurRACH/
CPCH[FDD]/
FACHData
Port
IurRACH/
CPCH[FDD}/
FACHData
Port
Iur
DataPort
TDD USCH
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No Spreading without Permission. Security Level: Internal
Iur Interface Protocol Stack Structure
SSCF-NNI
SSCOP
MTP3-B
AAL5
IP
SCTP
SCCP
AAL5
SSCF-NNI
STC (Q.2150.1)
RNSAP Iur DataStream(s)
TransportNetwork
Layer
Physical Layer
TransportUser
NetworkPlane
Control Plane User Plane
TransportUser
NetworkPlane
Transport NetworkControl Plane
Radio
NetworkLayer
ATM
ALCAP(Q.2630.1)
AAL2
SSCF-NNI
SSCOP
MTP3-B
IP
SCTPSSCF-NNI
M3UA M3UA
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No Spreading without Permission. Security Level: Internal
Iur Interface Protocol Stack Structure
Physical (Full Rate E1 or STM1 Optical)
ATM Lower Layers
AAL2 AAL5 - SAAL NNI
MTP3-B
Q.2150
Q.2630
Q.AAL2
Frame Protocol
Unrestricted Digital
Voice Data
SCCP
RNSAP
RLC / MAC
CS
Bearer
Control
Signaling
RNSAP: Radio Network Subsystem Application Part
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No Spreading without Permission. Security Level: Internal
Iur Interface Functions
Support Basic Mobility Functions between RNCs
Support SRNC relocation
Cell Update and URA Update between RNCs
Paging between RNCs
Protocol Error Report
Dedicated Channel Functions
Establish, Modify or Release Dedicated Channels in DRNC
during handover
Transmission of DCH TB(Transmission Block) on Iur
Management of RL(Radio Link) in DRNS by Dedicated
Measurement Procedure and Filter Control
RL ManagementCompressed Mode Management
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No Spreading without Permission. Security Level: Internal
Iur Interface Functions
Common Channel Functions
Establishment, Deletion of Common transport Channels on Iur
Occupation of Common Transport Channels for Transmit UE
information which is in Common Channel state in DRNC
Separate MAC-d From MAC-c
Traffic Control Between MAC-d and MAC-c
Global Resource Management
Common Measurement Between RNCs
Transmission of Node B Timing Information between RNCs
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No Spreading without Permission. Security Level: Internal
UTRAN Interfaces Protocols and Functions
Iu Interface
Iur Interface
Iub Interface
Uu Interface
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No Spreading without Permission. Security Level: Internal
Logical Model of lub Interface
... ...
Node B
...Cell Cell Cell Cell CellCell
Node B Communication Contexts,with attributes
Common Transport Channels,with attributes
Node BControl
Port
IubRACHDataport
IubFACHDataport
IubPCHDataport
Traffic termination point
CommunicationControl
Port
IubTDD USCH
Dataport
IubDCHDataport
IubDSCHDataport
Traffic termination point
CommunicationControl
Port
IubTDD USCH
Dataport
IubDCHDataport
IubDSCHDataport
Controlling RNC
IubFDD
CPCHDataport
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No Spreading without Permission. Security Level: Internal
Iub Interface Protocol Stack
Node B
Application Part
(NBAP)
AAL Type 2
ALCAP
Transport
Layer
Physical Layer
Radio
Network
Layer
Radio Network
Control Plane
Transport
Network
Control Plane
DCH
FP
RACH
FP
ATM
DSCH
FP
AAL Type 5
User Plane
SSCF-UNI
SSCOPAAL Type 5
SSCF-UNI
SSCOP
Q.2630.1
Q.2150.2
FACH
FP
PCH
FP
USCH
FP
CPCH
FP
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No Spreading without Permission. Security Level: Internal
Iub Interface Protocol Stack
Physical (Full Rate E1 or STM1 Optical)
ATM Lower Layers
AAL2 AAL5 - SAAL UNI
NBAP
Q.2150
Q.2630
Q.AAL2
Frame Protocol
RLC / MAC
RRC
MS
Signaling
CC/MM/RRUnrestricted
Digital/Voice
Packet
CS
Bearer
PS
Bearer
Control
Signaling
NBAP: Node B Application Part
RRC: Radio Resource Control
RLC: Radio Link Control
MAC: Medium Access Control
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No Spreading without Permission. Security Level: Internal
Iub Interface Functions(1)
Common Functions
Common Transport Channel Management
Iub Common Channel Data Transmission
Logical O&M of Node Bmaintenance functions such as cell
configuration Management Fault Management Block
Management, etc.
System Information Management
Common Measurement
Resource Verification
Abnormality Management
Timing and Synchronization Management
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No Spreading without Permission. Security Level: Internal
Iub Interface Functions(2)
Dedicated Functions
Dedicated Transport Channel Management
Radio Link(RL) Monitoring
Dedicated Measurement Management Timing and Synchronization Management
Up-link outer loop Power Control
Iub Dedicated Data transmission
Balance on down-link power drifting
Compressed Mode Control
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No Spreading without Permission. Security Level: Internal
UTRAN Interfaces Protocols and Functions
Iu Interface
Iur Interface
Iub Interface
Uu Interface
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No Spreading without Permission. Security Level: Internal
Uu Interface Protocol Stack Structure
L3
control
control
control
control
Logical
Channels
Transport
Channels
C-plane signalling U-plane information
PHY
L2/MAC
L1
RLC
DCtGC
L2/RLC
MAC
RLCRLC
RLCRLC
RLCRLC
RLC
Duplication avoidance
UuS boundary
BMCL2/BMC
RRC
control
PDCP
PDCP L2/PDCP
DCtGC
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No Spreading without Permission. Security Level: Internal
Uu Interface L1 Functions1 Multiplexing of transport channels and de-multiplexing of encoded
composite channels
Mapping of encoded composite transport channels on physical
channels
Macro-diversity distribution/combining and soft handover execution
Error detection on transport channels and indication to higher layers
FEC encoding/decoding and interleaving/de-interleaving of transport
channels
Rate matching of coded transport channels to physical channels
Power weighting and combining of physical channels
closed-loop power control
open-loop power control
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No Spreading without Permission. Security Level: Internal
Uu Interface L1 Functions2
Modulation and spreading/demodulation and de-spreading ofphysical channels
Synchronization between frequency and time (chip, bit, slot,
frame)
Radio characters measurements (FER, SIR, Interference
power) and indication to higher layers
Compressed mode support
Diversity of Transmission/Receiving
Other base band processing functions
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No Spreading without Permission. Security Level: Internal
MAC: Medium Access Control
AS
L2
GC Nt DC
RRC(L3)
RLC
PHY(L1)
PDCP
BMC
MAC
Logical Channels
Transport Channels
Control
SAP's
Control
SAP
Radio(Access)
Bearers
Physical Channels
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No Spreading without Permission. Security Level: Internal
MAC Functions
mapping between logical channels and transport channels
selection of appropriate Transport Format for each Transport Channeldepending on instantaneous data rate
priority handling between data flows of one UE
priority handling between UEs by means of dynamic scheduling
identification of UEs on common transport channels
multiplexing/demultiplexing of higher layer PDUs into/from transport
blocks delivered to/from the physical layer on common transport
channels
multiplexing/demultiplexing of higher layer PDUs into/from transport
block sets delivered to/from the physical layer on dedicated transport
channels
traffic volume monitoring
Dynamic Transport Channel type switching
ciphering for transparent RLC
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No Spreading without Permission. Security Level: Internal
MAC: Mapping of Logical Channels(UE)
{XOR}
TransportChannels
(L1 CharacteristicsDependent)
PCH BCH FACH RACH DCH
S-CCPCHP-CCPCHPhysical
ChannelsPRACH DPDCH
LogicalChannels
(DataDependent)
PCCH
DCCH
DTCH
DecicatedLogical
Channel
CipherOn
BCCH CCCH CTCH
Higher Layerdata
PagingSystem
InfoSignaling
CellBroadcast
Service
SignalingandUser data
DTCHDTCH
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No Spreading without Permission. Security Level: Internal
MAC: Transport Formation Selection(1)
Contrl immediate bit rate by means of changing traffic per TTI(Transmission Time
Interval, is multiple of 10ms) Transport Block (TB): Bit series to be trasmited from logical channel
Transport Block Size: Size ofTB
Transport Block Set: A group of TB transferred in a TTI (Multiplexed on logicalchannel)bb
Transport Block Set Size: Whole bit length contained in a TBS
Transport Block, TB#1
TB#2
TB#n
Transport Block Size
Transport BlockSet
Transport Block Set Size = Transport Block Size x N
Transport Time Interval, TTI t
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No Spreading without Permission. Security Level: Internal
MAC: Transport Formation Selection(2)
Transport Format (TF) defines Transport Block Set (Transport Block Size,
Transport Block Set Size) Transport Format Set (TFS): Possible TF combinations of a transport channel.
MAC will chose a TF during every TTI
Transport Format Combination (TFC): Determined TF combination in each TTI,
each transport channel
Transport Format Combination Set (TFCS): define all possible TFC combination
method. Thus MAC can process dynamic transport rate control in different
transport channels
TFCS
TrCH#1
TFS
TF
TrCH#2 TrCH#3 TrCH#4
TFC
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No Spreading without Permission. Security Level: Internal
RLC: Radio Link Control
AS
L2
GC Nt DC
RRC(L3)
RLC
PHY(L1)
PDCP
BMC
MAC
Control
SAP's
Control
SAP
Radio(Access)
Bearers
Logical
Channels
Transport
Channels
Physical
Channels
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No Spreading without Permission. Security Level: Internal
RLC Functions
Segmentation, re-assembly and Padding
Transmission of user data
Error correction using different transport Format
In-sequence delivery of higher layer PDUs, duplicate
detection
Flow control
Sequence number check in Unacknowledged ModeUM
Protocol error detection and recovery
Ciphering
Suspend/resume function
PDCP Packet Data Convergence Protocol
7/28/2019 W(Level1) UMTS UTRAN Interfaces 20040730 a 1[1].0
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No Spreading without Permission. Security Level: Internal
PDCPPacket Data Convergence ProtocolBMCBroadcast/Multicast Control
AS
L2
GC Nt DC
RRC(L3)
RLC
PHY(L1)
PDCP
BMC
MAC
Control
SAP's
Control
SAP
Radio(Access)
Bearers
Logical
Channels
Transport
Channels
Physical
Channels
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No Spreading without Permission. Security Level: Internal
PDCP Functions
Mapping of network PDU from network protocol to RLC
protocol
header compression and de-compression in order to reduce
the redundant control information in higher layer data, thus
enhance the transport efficiency in air interface
TCP/IP (RFC2507) - Non-realtime IP
RTP/UDP/IP (RFC3095, ROHC) in Rel4- Realtime IP (e.g.
VoIP)
support of Loss-less SRNS Relocation
buffering and retransmit of higher layer data
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No Spreading without Permission. Security Level: Internal
BMC Functions
Storage of cell broadcast message
Monitoring of traffic volume and CBS (Cell Broadcast
Service) radio resource request
BMC message dispatching
Transport BMC message to UE
Transport BMC message to higher layer
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No Spreading without Permission. Security Level: Internal
RRC: Radio Resource Control
AS
L2
GC Nt DC
RRC(L3)
RLC
PHY(L1)
PDCP
BMC
MAC
Control
SAP's
Control
SAP
Radio(Access)
Bearers
Logical
Channels
Transport
Channels
Physical
Channels
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No Spreading without Permission. Security Level: Internal
RRC Functions1 Management of system information broadcast
Paging/Notification
RRC connection management establishreconfig, maintain
and release
Radio Bearer (RB) Management establish, reconfig and
release, support NAS services
RRC connection mobility management
initial cell selection
Routing of higher layer PDUs
Control of requested QoS and map into different resources of
Access Stratum
Management and control of radio resources
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No Spreading without Permission. Security Level: Internal
RRC Functions2
Management and control of RB, transport channel andphysical channel
open loop power control
Support of SRNS relocation
Control of UE measurement and measurement report
Ciphering control, protection of integrity
CBS related functionsBMC configurationCBS radio
resource distribute request, support of CBS non-continuous
receiving
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