Transcript WCDMA Access Transport Functionality Course Content • Introduction • Basic Access functionality • Synchronisation • Transmission co-siting • Transmission topologies • Standardisation 038 13 - EN/LZU 108 5506/

WCDMA Access Transport Functionality
Course Content
• Introduction
• Basic Access functionality
• Synchronisation
• Transmission co-siting
• Transmission topologies
• Standardisation
038 13 - EN/LZU 108 5506/ 2 Rev A
WCDMA Access Transport Functionality
Introduction to Access Transport
Functionality
038 13 - EN/LZU 108 5506/ 3 Rev A
WCDMA Access Transport Functionality
Objectives
Describe the standards and options in relation to
access network functionality and the Ericsson way,
including the commercial package
038 13 - EN/LZU 108 5506/ 4 Rev A
WCDMA Access Transport Functionality
Overview of WCDMA Transport Access Network
038 13 - EN/LZU 108 5506/ 5 Rev A
WCDMA Access Transport Functionality
Interfaces
Interface
Connects
Iu
RNC and the core network
Iur
RNC
Iub
RNC and RBS (called node B).
Uu
RBS (node B) and the user equipment.
Mur
RANOS and RNC
Mub
RANOS and RBS
Mun
RANOS and other Network management systems
038 13 - EN/LZU 108 5506/ 6 Rev A
WCDMA Access Transport Functionality
Initial Access Functionality
• Built in 16Gbps Packet switch in the RBS and
RNC nodes
• ATM PVC and PVP including cross connection
• AAL2 switched connections
• Permanent AAL5 connections for control plane
traffic
• Link redundancy
• O&M signalling over IP over Ethernet and ATM.
038 13 - EN/LZU 108 5506/ 7 Rev A
WCDMA Access Transport Functionality
Generic Single Subrack CPP Equipment
SCB - Switch core
board
MP - Main Processor
board
SCB
ET - Exchange
terminal boards
MP
DEV- Application
device boards
SCB
038 13 - EN/LZU 108 5506/ 8 Rev A
ET
Back plane
DEV
WCDMA Access Transport Functionality
Logical Links inside Physical Links
PVP
RBS
User plane
Control Plane
O&M plane
RBS
User plane
Control Plane
O&M plane
PVP
User plane
Control Plane
O&M plane
ATM
switch
PVC
User plane
Control Plane
O&M plane
RNC
PVC
Physical
interfaces
038 13 - EN/LZU 108 5506/ 9 Rev A
WCDMA Access Transport Functionality
AAL2 Switched Connections
RNC
Hub RBS
038 13 - EN/LZU 108 5506/ 10 Rev A
Hub RBS
Intermediate RBS, acts
as a Concentrator
Hub RBS
Hub RBS
WCDMA Access Transport Functionality
Permanent AAL5 Connections for Control
Plane Traffic
MSC
RANAP toMSC
RNC
RNSAP to RNC
RNC
NBAP to RBS
RBS
038 13 - EN/LZU 108 5506/ 11 Rev A
WCDMA Access Transport Functionality
O&M Signalling over IP over Ethernet and ATM
038 13 - EN/LZU 108 5506/ 12 Rev A
WCDMA Access Transport Functionality
Synchronisation
• Frame and node synchronisation
• Network synchronisation
038 13 - EN/LZU 108 5506/ 13 Rev A
WCDMA Access Transport Functionality
ATM on Fractional E1/T1/J1
UMTSRBS ATM
GSM-RBS
TDM
RNC
E1
UMTS
GSM
AAL2
TDM
1/0
BSC
Core network
Fractional E1
ATM
E1 Fraction 1 E1 fraction 2
038 13 - EN/LZU 108 5506/ 14 Rev A
WCDMA Access Transport Functionality
Circuit Emulation over 3G Transmission
UMTS
GSM
AAL2
AAL1 /CBR
ATM
UMTSRBS ATM
GSM-RBS
TDM
038 13 - EN/LZU 108 5506/ 15 Rev A
E1
ATM
RNC
BSC
Core network
E1
WCDMA Access Transport Functionality
Transmission Topologies
RBS 1
RBS 3
RNC
RNC
RBS 2
RBS 1
RBS 3
RBS 7
RBS 2
RBS 4
RBS 4
RBS 5
RBS 1
RBS 6
RBS 0
RBS 2
RNC
RBS 3
RBS 4
RBS 6
RBS 5
038 13 - EN/LZU 108 5506/ 16 Rev A
WCDMA Access Transport Functionality
Standardisation
ATM forum
www.atmforum.org
GSM Association
www.gsmworld.com
UMTS Forum
www.umtsforum.org
3GPP
3rd Generation Partnership project
www.3gpp.org
ANSI
American National Standards Institute
www.ansi.org
ARIB/TTC
Association of Radio Industries and Businesses/
The Telecommunications Association
www.arib.or.jp/
www.tta.or.jp
CWTS
China Wirless Telecommunications Standard
www.cwts.org
ETSI
European Telecommunication standards institute
www.etsi.org
GSA
Global mobile suppliers association
www.gsacom.com
ISO
International Standards Organisation
www.iso.org
ITU
International Telecommuniction union
www.itu.org
TTA
Telecommunication Technology Association,
Korea
www.tta.or.kr
TIA
Telecommunication Industry Association
www.tiaonline.org
RTT
Radio Transmission Technology
038 13 - EN/LZU 108 5506/ 17 Rev A
WCDMA Access Transport Functionality
Basic Access Transport Functionality
038 13 - EN/LZU 108 5506/ 18 Rev A
WCDMA Access Transport Functionality
Initial Access Transport Functionality
 Describe the importance of the 16Gbps packet
switch in the RBS and RNC
 Describe ATM PVC and PVP including Cross
Connections
 Briefly explain the AAL2 switched connections
 Explain the importance and methods of link
redundancy
 Describe the O&M signalling over IP over Ethernet
and ATM
038 13 - EN/LZU 108 5506/ 19 Rev A
WCDMA Access Transport Functionality
Built in 16Gbps Packet Switch in RBS and
RNC Nodes
038 13 - EN/LZU 108 5506/ 20 Rev A
WCDMA Access Transport Functionality
Generic Single Subrack CPP Equipment
SCB - Switch core
board
MP - Main Processor
board
SCB
ET - Exchange
terminal boards
MP
DEV- Application
device boards
SCB
038 13 - EN/LZU 108 5506/ 21 Rev A
ET
Back plane
DEV
WCDMA Access Transport Functionality
ISL Links
Extension Subrack 1
Extension
SCBSubrack 2
Main Subrack
SCB
ET
Back
plane
MP
MP
Extension
SCB Subrack 3
ISL
MP SCB
ET
ET DEV
SCB Subrack 4 ET
Extension
DEV
MP SCB
SXB
SCB
SCB
MP
SXB
SCB
ET
DEV
DEV
DEV
SCB
Extension Subrack n
SCB
MP
SCB
ET
DEV
SXB - Switch extension Boards
ISL- Inter subrack links
038 13 - EN/LZU 108 5506/ 22 Rev A
WCDMA Access Transport Functionality
RNC Switch Capacity
• The main switch capacity is not the limiting factor for the
RNC, the capacity of the RNC is limited to the
approximate sum of the ISL links
• The node switch throughput should then be at least
400Mbps
• Where higher switching capacity nodes are required the
number of ISLs between the main subrack and the
extension subrack can be increased
038 13 - EN/LZU 108 5506/ 23 Rev A
WCDMA Access Transport Functionality
RNC Switch Capacity (2)
• Each core switch subrack has twenty-six generic device
board slots.
• There are two specific boards for the core switch, these
have four internal subrack links
• The total switch core capacity must then be 28*622Mbps
038 13 - EN/LZU 108 5506/ 24 Rev A
WCDMA Access Transport Functionality
Redundancy in the 16Gbps Switch
Update of changes
the Active switch
has implemented
Active Switch
038 13 - EN/LZU 108 5506/ 25 Rev A
Passive Switch
WCDMA Access Transport Functionality
ATM PVC and PVP including Cross
Connection
038 13 - EN/LZU 108 5506/ 26 Rev A
WCDMA Access Transport Functionality
Logical Links inside Physical Links
PVP
RBS
User plane
Control Plane
O&M plane
RBS
User plane
Control Plane
O&M plane
PVP
User plane
Control Plane
O&M plane
ATM
switch
PVC
User plane
Control Plane
O&M plane
RNC
PVC
Physical
interfaces
038 13 - EN/LZU 108 5506/ 27 Rev A
WCDMA Access Transport Functionality
Logical Links inside Physical Links
Management plane functionality to establish
and release:
 ATM cross-connected PVC links
 ATM PVP terminations
 Permanent AAL0, AAL1 and AAL5 terminations
 AAL2 paths
038 13 - EN/LZU 108 5506/ 28 Rev A
WCDMA Access Transport Functionality
Iu, Iur and Iub can be mixed on the Physical
Transport
038 13 - EN/LZU 108 5506/ 29 Rev A
WCDMA Access Transport Functionality
Benefit of using ATM PVC and PVP
• Reduce the need for external transmission equipment
• PVC/PVPs allow connection to public ATM services
complying with traffic contracts on limited bandwidth
• External transmission products are not required, but can be
used
038 13 - EN/LZU 108 5506/ 30 Rev A
WCDMA Access Transport Functionality
Replacement of Equipment
WE HAVE A FANTASTIC NEW
TECHNOLOGY - YOUR
CURRENT EQUIPMENT IS NO
LONGER USEFUL!
ATM
PDH
SDH
ATM
PDH
SDH
Existing Equipment
038 13 - EN/LZU 108 5506/ 31 Rev A
WCDMA Access Transport Functionality
Permanent AAL5 Connections for Control
Plane Traffic
038 13 - EN/LZU 108 5506/ 32 Rev A
WCDMA Access Transport Functionality
Permanent AAL5 Connections
Radio
Network
Layer
Transport
Network
Layer
Control Plane
User Plane
Application
Protocol
Data
Stream(s)
Transport Network
User Plane
Transport Network
Control Plane
Transport Network
User Plane
ALCAP(s)
Signalling
Bearer(s)
Signalling
Bearer(s)
Data
Bearer(s)
AAL5
AAL5
AAL2
Physical Layer
038 13 - EN/LZU 108 5506/ 33 Rev A
WCDMA Access Transport Functionality
AAL5 Connections
All Signalling carried over
AAL5
MSC
RANAP to MSC
RNC
RNSAP to RNC
RNC
NBAP to RBS
RBS
038 13 - EN/LZU 108 5506/ 34 Rev A
WCDMA Access Transport Functionality
Control Plane
Iub
RBS/
RNC
Internal control plane
paths within RBS/RNC
set up dynamically at
start up
038 13 - EN/LZU 108 5506/ 35 Rev A
RNC
RBS
Control paths between nodes
established by element
manager and RANOS
WCDMA Access Transport Functionality
AAL2 Switched Connections
038 13 - EN/LZU 108 5506/ 36 Rev A
WCDMA Access Transport Functionality
Summary
The transport network control plane is required to
set up switched AAL2 in the transport network
user plane for the Iu-CS, Iur and Iub interfaces to
establish on demand transport capacity
038 13 - EN/LZU 108 5506/ 37 Rev A
WCDMA Access Transport Functionality
AAL2 Switched Features
• Transport services control plane
• Connection control
• Routing
• Traffic management
• Connection admission control
• Addressing
• Distribution of AAL2 connection handling
038 13 - EN/LZU 108 5506/ 38 Rev A
WCDMA Access Transport Functionality
AAL2 Switched Connections
RNC
Hub RBS
038 13 - EN/LZU 108 5506/ 39 Rev A
Hub RBS
Intermediate RBS, acts
as a Concentrator
Hub RBS
Hub RBS
WCDMA Access Transport Functionality
Transport Services Control
RBS/
RNC
RBS/
RNC
Destination node
Originating node
RBS/
RNC
Transit node
Flow of Control
information
038 13 - EN/LZU 108 5506/ 40 Rev A
WCDMA Access Transport Functionality
Connection Control
Point-to-point node AAL2
connection
Q2630.1 signalling
used
038 13 - EN/LZU 108 5506/ 41 Rev A
WCDMA Access Transport Functionality
Routing
RBS
RNC
RBS
RBS
The route along these 3 lines will
be selected in a round robin
manner.
038 13 - EN/LZU 108 5506/ 42 Rev A
RBS
RBS
WCDMA Access Transport Functionality
Traffic Management
To achieve an efficiently run or tuned network
using the available resources to provide a high
performance throughput.
038 13 - EN/LZU 108 5506/ 43 Rev A
WCDMA Access Transport Functionality
Connection Admission Control
B
1) I wish to
connect to B
with X QoS
2) Attempts to
parameters
find a path to B.
2
Able to support
this request.
1
CAC
Inform CAC of
CAC
3
results.
A
3) Call proceeding
038 13 - EN/LZU 108 5506/ 44 Rev A
ATM switch inside
an RNC/RBS
WCDMA Access Transport Functionality
Addressing
• A unique network address is associated with
each node in the AAL2 transport network.
• An ATM End System Address (AESA) uniquely
identifies each node.
038 13 - EN/LZU 108 5506/ 45 Rev A
WCDMA Access Transport Functionality
Distribution of AAL2 Connection Handling
• Possible to scale a node in terms of AAL2 control
plane capacity
• Distribution of AAL2 connection handling makes it
possible to avoid the situation, when a single
Main Processor failure causes the loss of all
AAL2 connections in a node
038 13 - EN/LZU 108 5506/ 46 Rev A
WCDMA Access Transport Functionality
Link Redundancy
038 13 - EN/LZU 108 5506/ 47 Rev A
WCDMA Access Transport Functionality
Link Redundancy with AAL5 Connections
Dual connections
Both links running below
full capacity
Dual connections, 1 link
failed
X
Extra capacity can be carried
on second link
038 13 - EN/LZU 108 5506/ 48 Rev A
WCDMA Access Transport Functionality
Logical Links carrying different types of Data
PVP
User plane
User
plane
One PVP
per RBS
PVP
O&M plane
ATM
switch
Control
plane
Node sync
User plane
O&M plane
PVC
PVC
Physical
interfaces
038 13 - EN/LZU 108 5506/ 49 Rev A
WCDMA Access Transport Functionality
User Plane Link Redundancy
• The AAL2 Call Admission Control will distribute the
traffic over all links configured for the interface
• If one link fails that links traffic will be lost, but traffic
on other links will continue without interruption
• If there is capacity left on remaining links new calls
are set up using this unused capacity
038 13 - EN/LZU 108 5506/ 50 Rev A
WCDMA Access Transport Functionality
Control Plane Link Redundancy
Iu/ Iur
Iub
RNC
X
X
RBS
Re-routing of
signal path
038 13 - EN/LZU 108 5506/ 51 Rev A
Reserve path
configuredactivated at failure
WCDMA Access Transport Functionality
O&M Plane Link Redundancy
• The redundant links can be connected to IP
routers in all nodes and the routers select links
at any time
or
• Redundant ATM cross-connected links from
end to end can be employed
038 13 - EN/LZU 108 5506/ 52 Rev A
WCDMA Access Transport Functionality
Node Synchronisation Redundancy
• When using duplicated timing units in both the
RNC and the RBS, the RNC must have logical
links to the duplicated TU boards in each RBS
• Each Iub can have four VC’s for synchronisation,
which need to be distributed over at least two
physical links
038 13 - EN/LZU 108 5506/ 53 Rev A
WCDMA Access Transport Functionality
O&M Signalling over IP over Ethernet and ATM
038 13 - EN/LZU 108 5506/ 54 Rev A
WCDMA Access Transport Functionality
O&M Signalling over IP over Ethernet and ATM
038 13 - EN/LZU 108 5506/ 55 Rev A
WCDMA Access Transport Functionality
Initial Access Functionality Review
• Built in 16Gbps Packet switch in the RBS and
RNC nodes
• ATM PVC and PVP including cross connection
• AAL2 switched connections
• Permanent AAL5 connections for control plane traffic
• Link redundancy
• O&M signalling over IP over Ethernet and ATM
038 13 - EN/LZU 108 5506/ 56 Rev A
WCDMA Access Transport Functionality
Synchronisation Functionality
038 13 - EN/LZU 108 5506/ 57 Rev A
WCDMA Access Transport Functionality
Objectives

Explain the network synchronisation

Describe the frame and node
synchronisation
038 13 - EN/LZU 108 5506/ 58 Rev A
WCDMA Access Transport Functionality
Synchronisation Functionality
• Network synchronisation- the stability of the clocks
in the WCDMA network
• Frame and Node synchronisation - the estimation
and compensation of timing differences between
nodes. The goal of node synchronisation is the
achievement of a common timing reference between
different nodes
038 13 - EN/LZU 108 5506/ 59 Rev A
WCDMA Access Transport Functionality
Network Synchronisation
038 13 - EN/LZU 108 5506/ 60 Rev A
WCDMA Access Transport Functionality
Network Synchronisation
The RNCs and RBSs are synchronised to a
clock reference with at least Stratum 1 quality
Normally the clock reference will be taken from
the transmission network
038 13 - EN/LZU 108 5506/ 61 Rev A
WCDMA Access Transport Functionality
Synchronisation Slaving
75Ohm external input
reference
Timing signal from
PDH/SDH network
Generate external timing
reference
Generate internal
timing reference
Internal clock is locked to
selected input reference clock
038 13 - EN/LZU 108 5506/ 62 Rev A
Internal cards in
the RBS or RNC
WCDMA Access Transport Functionality
Stratum 1 Technologies
Caesium
GPS
Atomic
technology
need stable
environment
24 satellites
orbiting earth
controlled by
US military
Expensive to
purchase - but
you control
your timing
Need to
purchase cheap
receiver
Timing quality is the same!
038 13 - EN/LZU 108 5506/ 63 Rev A
WCDMA Access Transport Functionality
Jitter and Wander
Jitter
• short term variations
• variations are of frequency greater than or equal to 10Hz
Wander
• long term variations
• variations are of frequency less than 10Hz
038 13 - EN/LZU 108 5506/ 64 Rev A
WCDMA Access Transport Functionality
Clock Modes
~
Locked mode - internal clock
locked to outside reference
Holdover mode - external references
lost, but internal clock can remember
and recreate external reference (1 hour)

~

038 13 - EN/LZU 108 5506/ 65 Rev A

~
Free-running modeusing internal clock
frequency
WCDMA Access Transport Functionality
Synchronisation Cascading
Compliant
Within a
PDH/ SDH
network
NON Compliant
RNC
RNC
RBS
RBS
RBS
RBS
Direct links - not via PDH/ SDH
Timing reference
038 13 - EN/LZU 108 5506/ 66 Rev A
WCDMA Access Transport Functionality
Review Synchronisation Functionality
• Frame and Node synchronisation- estimation and
compensation of timing differences between nodes.
The goal is the achievement of a common timing
reference between different nodes
• Network synchronisation- the stability of the clocks in
the WCDMA network
038 13 - EN/LZU 108 5506/ 67 Rev A
WCDMA Access Transport Functionality
Frame and Node Synchronisation
038 13 - EN/LZU 108 5506/ 68 Rev A
WCDMA Access Transport Functionality
Frame and Node Synchronisation
• Node Synchronisation function’s major task is to
generate node time references
• Node time references are taken by measuring the
phase difference between the RNC and each RBS
• The Node Synchronisation is the base for the frame
synchronisation
038 13 - EN/LZU 108 5506/ 69 Rev A
WCDMA Access Transport Functionality
Node Synchronisation Sub Functions
• Holding of and generation of node reference time in the
RNC and the RBS
• Measurement of phase difference between the frame
reference time in the RNC and the frame reference time in
each RBS
• A database of the two latest measured phase differences to
each RBS is held, and an estimate of the accuracy of each
of the measurement
• Supervision of drifting frame reference times in the nodes
Alarm can be raised at a configurable threshold
038 13 - EN/LZU 108 5506/ 70 Rev A
WCDMA Access Transport Functionality
Transmission Co-Siting
038 13 - EN/LZU 108 5506/ 71 Rev A
WCDMA Access Transport Functionality
Objectives

Describe ATM on fractional transmission for
2G transmission sharing over E1/T1/J1

Explain circuit Emulation over ATM for 2G
transmission sharing
038 13 - EN/LZU 108 5506/ 72 Rev A
WCDMA Access Transport Functionality
Methods of Co-Siting
We will look at two method of transmission co-siting
• Fractional ATM on fractional transmission for
sharing 2G transmission over E1/T1/J1
• Circuit emulation over ATM for the 2G
transmission sharing
038 13 - EN/LZU 108 5506/ 73 Rev A
WCDMA Access Transport Functionality
ATM on Fractional Transmission for 2G
Transmission Sharing over E1/T1/J1
038 13 - EN/LZU 108 5506/ 74 Rev A
WCDMA Access Transport Functionality
Benefits of Fractional ATM
•
Reduce the need for external transmission equipment
and transmission links when sharing transport
between 2G and 3G
•
The ET-M1, ET-MC1 and ET-MC41 boards can be
configured for using a fraction of a full E1/T1/J1 link
038 13 - EN/LZU 108 5506/ 75 Rev A
WCDMA Access Transport Functionality
2G and 3G Transmission Technologies
ONE SITE
3G
WCDMA RBS using ATM
transmission
038 13 - EN/LZU 108 5506/ 76 Rev A
2G
GSM RBS using TDM
transmission
WCDMA Access Transport Functionality
ATM on Fractional E1/T1/J1
UMTSRBS ATM
GSM-RBS
TDM
RNC
E1
UMTS
GSM
AAL2
TDM
1/0
BSC
Core network
Fractional E1
ATM
E1 Fraction 1 E1 fraction 2
038 13 - EN/LZU 108 5506/ 77 Rev A
WCDMA Access Transport Functionality
Timeslots in E1 and T1
E1 - timeslot 0 used to synchronise frame. Timeslots 1-31 carry data
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
T1/J1 - timeslot 0 used to synchronise frame. Timeslots 1- 24 carry data
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
038 13 - EN/LZU 108 5506/ 78 Rev A
WCDMA Access Transport Functionality
Timeslot Integrity Handling
Re-order timeslots
for ATM traffic
52431
54321
GSM-RBS
TDM
1/0
E1
RNC
BSC
Core network
Fractional E1
UMTSRBS ATM
Private SDH backbone
038 13 - EN/LZU 108 5506/ 79 Rev A
WCDMA Access Transport Functionality
Circuit Emulation over ATM for 2G
Transmission Sharing
038 13 - EN/LZU 108 5506/ 80 Rev A
WCDMA Access Transport Functionality
Circuit Emulation
• Circuit emulation means converting STM information
into ATM information
• Circuit emulation makes it possible to carry timeslots
of an E1/T1/J1 in an ATM network and regenerate the
timeslots again in the other end of the connection
038 13 - EN/LZU 108 5506/ 81 Rev A
WCDMA Access Transport Functionality
Circuit Emulation over 3G Transmission
UMTS
GSM
AAL2
AAL1 /CBR
ATM
UMTSRBS ATM
GSM-RBS
TDM
038 13 - EN/LZU 108 5506/ 82 Rev A
E1
ATM
RNC
BSC
Core network
E1
WCDMA Access Transport Functionality
Transmission Topologies
038 13 - EN/LZU 108 5506/ 83 Rev A
WCDMA Access Transport Functionality
Objectives
 Describe the types of transmission topologies,
including Chains, clusters/ stars, rings and cloud/
mesh.
 Explain the methods of connecting to other vendors
networks
 Differentiate between physical and logical network
views
038 13 - EN/LZU 108 5506/ 84 Rev A
WCDMA Access Transport Functionality
Topologies
• Port to port connections can be used to build any
transport network structure
• We will look at chains (cascading), clusters/stars,
rings, cloud/mesh, and leased lines.
038 13 - EN/LZU 108 5506/ 85 Rev A
WCDMA Access Transport Functionality
Chain Topology
RBS 1
RBS 3
RNC
RBS 2
RBS 4
Maximum of 5 RBS cascaded
038 13 - EN/LZU 108 5506/ 86 Rev A
WCDMA Access Transport Functionality
Cluster/ Star Topology
RNC
RBS 2
RBS 1
RBS 3
RBS 7
RBS 4
RBS 5
RBS 6
1or 2 E1’s
E3 or STM-1 can be duplicated
038 13 - EN/LZU 108 5506/ 87 Rev A
WCDMA Access Transport Functionality
Ring Topology
RBS 1
RBS 0
RBS 2
RNC
RBS 3
RBS 4
RBS 6
RBS 5
Each RBS can make connections both
ways around the ring
038 13 - EN/LZU 108 5506/ 88 Rev A
WCDMA Access Transport Functionality
Connectivity to Other Vendors’ Products
RBS 1
RBS 0
RBS 2
M
M
RNC
RBS 3
M
RBS 6
RBS 4
RBS 5
M ADM
038 13 - EN/LZU 108 5506/ 89 Rev A
WCDMA Access Transport Functionality
Physical / Logical Network
038 13 - EN/LZU 108 5506/ 90 Rev A
WCDMA Access Transport Functionality
Logical View of the Network
RBS site
RNC site
Connection
038 13 - EN/LZU 108 5506/ 91 Rev A
WCDMA Access Transport Functionality
Physical View of the Network
Repeater
RBS site
RNC site
Optical fibre
Microwave
Leased line
038 13 - EN/LZU 108 5506/ 92 Rev A
WCDMA Access Transport Functionality
Standardisation
038 13 - EN/LZU 108 5506/ 93 Rev A
WCDMA Access Transport Functionality
Objectives
 Describe where to find more information on 3GPP
standards in relation to access transport functionality
038 13 - EN/LZU 108 5506/ 94 Rev A
WCDMA Access Transport Functionality
Standardisation
• Common method of designing and operating network
equipment
• Standards for both 1G and 2G technologies
• International, Regional, National or Company. Different
companies use different standards
• The ITU collated the standards for 3rd generation
technologies under the banner of International mobile
telecommunications (IMT 2000).
• The ITUs role was to provide a framework, act as a
catalyst for harmonisation of alternative 3G solutions
across regions
038 13 - EN/LZU 108 5506/ 95 Rev A
WCDMA Access Transport Functionality
3rd Generation Partnership Project
• The 3rd Generation Partnership Project is a global
initiative established at the end of 1998 in order to
accelerate IMT-2000 standardisation activities
• It had been evident that it would be practically
impossible to keep the detailed standardisation work
harmonised, 3GPP provides this harmonisation
038 13 - EN/LZU 108 5506/ 96 Rev A
WCDMA Access Transport Functionality
3GPP Organisation Partners
• ETSI (Europe) www.etsi.org
• ARIB/TTC (Japan) www.arib.or.ip
• ANSI T1 (USA) www.ansi.org
• TTA (South Korea) www.tta.or.kr
• CWTS (China) www.cwts.org
038 13 - EN/LZU 108 5506/ 97 Rev A
WCDMA Access Transport Functionality
3GPP Market Representation
– UMTS Forum www.UMTS-forum.org
– GSM Association www.gsmworld.com
– Global Mobile Suppliers Association (GSA)
www.gsacom.com
3GPP Observers
TIA (USA)
RTT (China)
038 13 - EN/LZU 108 5506/ 98 Rev A
WCDMA Access Transport Functionality
Access Transport Functionality Standards
• 25.104, UTRA (BS) FDD: radio Transmission and Reception
• 25.402, Synchronisation in UTRAN stage 2
• 25.422, UTRAN Implementation specific O&M Transport
• 25.424, UTRAN Iur Interface Data Transport and transport signalling
for common transport channel data streams
• 25.426, UTRAN Iur and Iub Interface data transport Signalling for
DCH data streams
• 25.432, UTRAN Iub Interface: signalling transport
• 25.434, UTRAN Iub Interface Data Transport &Transport signalling
for Common Transport Channel data streams
• 25.442, UTRAN Iur Interface signalling transport
038 13 - EN/LZU 108 5506/ 99 Rev A
WCDMA Access Transport Functionality
Other Standardisation
ATM forum
www.atmforum.org
GSM Association
www.gsmworld.com
UMTS Forum
www.umtsforum.org
3GPP
3rd Generation Partnership project
www.3gpp.org
ANSI
American National Standards Institute
www.ansi.org
ARIB/TTC
Association of Radio Industries and Businesses/
The Telecommunications Association
www.arib.or.jp/
www.tta.or.jp
CWTS
China Wirless Telecommunications Standard
www.cwts.org
ETSI
European Telecommunication standards institute
www.etsi.org
GSA
Global mobile suppliers association
www.gsacom.com
ISO
International Standards Organisation
www.iso.org
ITU
International Telecommuniction union
www.itu.org
TTA
Telecommunication Technology Association,
Korea
www.tta.or.kr
038 13 - EN/LZU 108 5506/ 100 Rev A
WCDMA Access Transport Functionality
Ericsson Specific Information
• External Ericsson information can be found at the
following site:
www.Ericsson.com/technology
• Then select 3G third generation technology,
• This site provides information regarding generic 3G
technologies, a glossary and also links to the UMTS
forum and 3GPP website page. Information can also be
found regarding Ericsson specific equipment
038 13 - EN/LZU 108 5506/ 101 Rev A
WCDMA Access Transport Functionality
Course Content
• Introduction
• Initial Access functionality
• Synchronisation
• Transmission co-siting
• Transmission topologies
• Standardisation
038 13 - EN/LZU 108 5506/ 102 Rev A
WCDMA Access Transport Functionality
Any Questions?
038 13 - EN/LZU 108 5506/ 103 Rev A
WCDMA Access Transport Functionality