07 UMTS UTRAN Signaling Procedures

5/27/2018 07 UMTS UTRAN Signaling Procedures
1/63
HUAWEI TECHNOLOGIES CO., LTD. All rights reserved
Internal
www.huawei.com
UMTS UTRAN SignalingProcedures

2/63
11 UTRAN System Architecture andUTRAN System Architecture and
Protocol StackProtocol Stack
2 Basic Terms Related to the UTRAN2 Basic Terms Related to the UTRAN
3 Basic Signaling Procedures3 Basic Signaling Procedures

3/63
UTRAN System Architecture
RNS
RNC
RNS
RNC
Core Network
Node B Node B Node B Node B
Iu Iu
Iur
Iub IubIub Iub

4/63
WCDMA Protocol Architecture
AAL5
RANAP
SCCP
Relay
RRCRLC
MAC
L1
RANAPSCCP
AAL5
Uu IuUE RNS MSC/
SGSN
SignallingBearer
RRC
RLC
MAC SignallingBearer
ATM
L1
ATM
SMS /GMM / MM
SMS /GMM / MM

5/63
Comparison: GSM-BSS Protocol Architecture
CM
MM
RR
LAPDm
SigL1
L3
L2
L1
MS
RR BTSM
LAPDm
SigL1
LAPD
SigL1
LAPD
SigL1
BTSM
RR
SCCP
MTP
BSSMAP
CM
MM
BSSMAP
SCCP
MTP
MSCBSCBTS
Um AAbis

6/63
Protocol Architecture for the RNC ControlPlane
Node B
RNC
CN
UE
RANAP
NBAP
RNSAPRRC
NBAP Node B Application Part
RANAPRadio Access Network Application PartRNSAPRadio Network Subsystem Application PartRRC Radio Resource Control
RNC

7/63
Summary
This part describes the UTRAN
system architecture and the protocolarchitecture.

8/63
1 UTRAN System Architecture and1 UTRAN System Architecture and

9/63
Basic Terms
UTRANprovides setup, maintenance, and release of radio access
bearer (RAB) for the Non-Access Stratum (NAS) to shield the focus of
the NAS on the features of the radio access stratum. Other terms: UTRAN, RAB, RB, and RL
RAB
RB
RLNodeB
RNC CNUE
UTRAN

10/63
Basic Terms
RAB: The service that the access stratum provides to
the Non-Access Stratum (NAS) for transfer of user data
between User Equipment and CN.
RBThe service provided by the Layer 2 for transfer of
user data between User Equipment and SRNC.
RL: A "radio link" is a logical association between single User
Equipment and a single UTRAN access point. Its physical
realisation comprises one or more radio bearer transmissions.

11/63
CELL_DCH CELL_FACH
CELL_PCHURA_PCH
IDLE
DEAD - Searching for the network (PLMN)
- Camp on the cell
- Monitoring paging channel- Cell reselection
- Dedicated channel- Radio bearers transmission servcie
- Reducing actions, DRX, and saving power
RRC connection
These states are significant only forUTRAN and UE. They are transparent to
CN.
UE States

12/63
Working Modes of the UE
The UE has two working modes: idle mode and connected mode.
Idle mode: The UE is in the standby state and has no service for
processing. In addition, no connection exists between the UE and
UTRAN, and the UTRAN does not contain any information about the
UE. The UE is identified by the NAS identifiers, such as the IMSI,
TMSI, or P-TMSI.
Connected mode: When the UE completes the RRC connection
setup, the UE changes from the idle mode to the connected mode.
In Connected mode, the UE has four states: Cell-DCH, Cell-FACH,
Cell-PCH, and URA-PCH.

13/63
UE States in Connected Mode
Cell-DCH
The UE is in the active state. It communicates over the dedicated
channel. The UE has a dedicated channel in both the uplink and
downlink. The UTRAN accurately knows the cell on which the UE
camps.
Cell-FACH
The UE is in the active state, but it has few data to send in both the
uplink and downlink. It is not required to allocate a dedicated
channel for the UE. The downlink data is transmitted over the FACH,
and the uplink data is transmitted over the RACH. The UE needs to
monitors the FACH in the downlink at any time for its information.
The UTRAN accurately knows the cell on which the UE camps and
maintains the resources for the UE and its state.

14/63
UE States in Connected Mode
Cell-PCH
The UE has no data to send in the uplink and downlink. It needs to
monitor the PICH for receiving paging messages. Therefore, the UE
enters the discontinuous reception, which saving the power.
The UTRAN knows which cell that the UE camps on. Thus, after the
UE roams to another cell, the UTRAN needs to update the cell
information of the UE.
URA-PCH
The UE has no data to send in the uplink and downlink. It needs to
monitor the PICH and enters the discontinuous reception. The
UTRAN knows only the UTRAN registration area (URA) of the UE. AURA contains multiple cells. That is, the UTRAN updates the
location information only after the URA where the UE is located
changes, thus saving resources and reducing signaling.

15/63
Serving RNC and Drift RNC
In the WCDMA system, the SRNC and DRNC are introduced due to the Iur interface.
The SRNC and DRNC correspond to a specific UE.
For connections between a UE and the CN, the RNC that is directly connected the CN
and controls all resources of the UE is called the SRNC. The RNC that has no direct
connection with the CN and only provides resources for the UE is called DRNC.
A UE in connection state has at least one and only one SRNC, but can have no or
multiple DRNCs.
CN
SRNC DRNC
IuIur

16/63
CRNC
The controller RNC (CRNC) corresponds to a NodeB or cell.
The RNC that is directly connected to a NodeB and controls the
usage of resources of the NodeB is called the CRNC.
A NodeB corresponds to one and only one CRNC.
The CRNC allocates the resources of all the NodeBs controlled by
the CRNC properly.
Iub
Node B
Cell Cell Cell
Node B
...
Iu
CRNC
CN

17/63
Summary
This part describes some
terms related to the UTRAN.

18/63
1 UTRAN System Architecture and1 UTRAN System Architecture and

19/63
Basic Signaling Procedures
System InformationSystem Information
BroadcastingBroadcasting
PagingPaging
Paging ProcedurePaging Procedure
HandoverHandover

20/63
System Information BroadcastingSystem Information Broadcasting

21/63
Overview of the System InformationOverview of the System InformationMIB: includes the PLMN identifier and the scheduling information of the schedule block (SB) and
system block (SB).SB1: includes the scheduling information of the SIB.
SB2 : includes the scheduling information of the SIB.
SIB1: includes the UE timers and counters and the system information at the NAS.
SI

07 UMTS UTRAN Signaling Procedures

Documents

Transcript of 07 UMTS UTRAN Signaling Procedures

UMTS Signaling - GBV

03-WCDMA UTRAN Signaling Procedure

02 WCDMA UTRAN Interface and Signaling Procedure

Alu Umts Utran Generic Pm v16

UTRAN Complete Signaling Sequences

UTRAN Iu Interface RANAP Signaling

UTRAN and UMTS Signalling Protocols

03- OWA210001 WCDMA UTRAN Interface and Signaling Procedure

W(Level1) UMTS UTRAN Signaling Procedures 20050614 a 1[1].0

02 Huawei WCDMA UTRAN Interface and Signaling Procedure

UMTS UTRAN Signaling Procedures

UMTS UTRAN Call Flow

Umts Signaling Flow

UMTS Terrestrial Radio Access Network (UTRAN); Universal Mobile

WCDMA UTRAN Interface and Signaling Procedure ISSUE 11

4 UMTS Signaling Flow

07 UMTS UTRAN Signaling Procedures

COLORPICKER Zum Auswhlen der korrekten Farbe mit Zum Auswhlen der korrekten Farbe mit ... (LTE-E-UTRAN, UMTS-UTRAN, ... â€“ Signaling delay should not exceed

Chapter 2 of UMTS Signaling

Umts utran call flow cs and ps