4. Commercial in confidence RAN Architecture and Products 2005-09-26
4
Agenda
Introduction
RBS
RNC
Transport/RXI
5. Commercial in confidence RAN Architecture and Products 2005-09-26
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Main-Remote
w. RRU22
Micro
RBS 3303
Outdoor RBS 3106 Macro
Indoor RBS 3206 Macro
Release
2006
RBS models - Overview
6. Commercial in confidence RAN Architecture and Products 2005-09-26
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RBS 3206 Macro Indoor
Radio
1x1 to 3x3 @ 40 W per carrier
Dual Band
Output Power: 20 to 80 W configurations
Channel Element: UL/DL 1536/1536 CE
Tx-diversity, 4-way RX-diversity
HSDPA
Prepared for Enhanced Uplink
Transport
Up to 40 E1/T1/J1 ports or 16 STM-1 ports
IP option
Hub functionality with AAL2 switching
Size and Weight
Size: 1950x600x400 mm
Weight: 150 kg (3x1 config)
Power Supply
Power Supply: +24, -48 VDC, AC Mains
Power consumption 3x1 40 W: typ 1.0 kW
7. Commercial in confidence RAN Architecture and Products 2005-09-26
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Connection plates
for external signals
98
FCU
DC-filt/
DCCU
24
ACCU/
DCCU
48
P
D
U
2
B
P
P
P
P
P
F
U
1
F
U
2
F
U
3
F
U
4
F
U
5
F
U
6
PSUPSUPSUPSU
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R
U
9
R
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7
R
U
8
C
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T
/
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P
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A
X
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A
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A
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/
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P
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A
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/
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A
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/
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/
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/
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P
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A
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/
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P
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A
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/
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P
B
R
A
X
/
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P
B
R
A
X
/
G
P
B
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A
X
/
G
P
B
T
X
T
X
R
U
I
F
Cable shelf
P
D
U
1
R
U
1
R
U
2
R
U
3
R
U
4
R
U
5
R
U
6
Cable shelf
Filter units
with antenna RF connections
Radio units
Digital shelf for
base-band and
transmission cards
Radio units
Power Supply Unit
Inside RBS 3206
8. Commercial in confidence RAN Architecture and Products 2005-09-26
8
RBS 3106 Macro Outdoor
Radio
1x1 to 3x3 @ 40 W per carrier
Dual Band
Output Power: 20W/40 W per carrier
Channel Element: UL/DL 1536/1536 CE
Tx-diversity, 4-way RX-diversity
HSDPA
Prepared for Enhanced Uplink
Transport
T1, T3, OC3
IP option
Hub functionality with AAL2 switching
Size and Weight
Size: 63 1/2 x 51 1/5 x 37 in
Weight (3x1 carrier): 1230 lbs (excl. batt.)
Power Supply
Power Supply: AC Mains
Power consumption 3x1 40W: typ 1.7 kW
9. Commercial in confidence RAN Architecture and Products 2005-09-26
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OVP
Battery
Battery
D
u
m
m
y
F
U
1
F
U
2
F
U
3
F
U
4
F
U
5
F
U
6
R
U
1
R
U
2
R
U
3
R
U
4
R
U
5
R
U
6
XALM
PSUPSUPSUPSUBFU
A
U
H
Spare
S
P
A
R
E
cable shelf
C
B
U
E
T
/
G
P
B
E
T
/
G
P
B
R
A
X
/
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P
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A
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/
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P
B
R
A
X
/
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P
B
R
A
X
/
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P
B
R
A
X
/
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P
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A
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/
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T
X
T
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C
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P
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P
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A
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P
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A
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P
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A
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/
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P
B
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A
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P
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A
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A
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/
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B
T
X
T
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I
F
ACCU
F
C
U
R
U
9
P
D
U
1
R
U
7
R
U
8
P
D
U
2
cable shelf
Power Bar
Filter units with antenna
RF connections
Radio units
Digital shelf for
base-band and
transmission cards
Connection field for
external signals
Optional batteries
Power supply units
RF cable inlets
Inside RBS 3106
10. Commercial in confidence RAN Architecture and Products 2005-09-26
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RBS 3303 Micro
Capacity
– 1 carrier/cabinet at 20W
– Max 256/256 Channel Elements (DL/UL)
Dimensions
– 15.8 x 13.4 x 22.8 in (WxDxH)
– 95 lbs (incl. batteries)
Power
– -48 VDC or 100-240 VAC
– Backup Time > 1 Minute (option)
– Power Consumption (AC):
Peak 750 W (with heater during cold start)
Typical 350 W
11. Commercial in confidence RAN Architecture and Products 2005-09-26
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Separate channel element Boards for DL and UL
Down Link (DL), or TXB
Up to 2 Boards in Macro RBS
DL BB Board = 256 CE-R99 + HSDPA
Up Link (UL), RAXB
Up to 8 Boards in Macro RBS
UL BB Board = 128 CE CE
CE
384 kb/s
64 kb/s
Channel Element Boards
CE
Carrier #2 (5MHz)
Carrier #1 (5MHz)
Channel Element (CE) Consumption
CS/PS RAB Downlink Uplink
Speech 1 1
64 Kbps 2 4
128 Kbps 4 8
384 Kbps 8 16
12. Commercial in confidence RAN Architecture and Products 2005-09-26
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Agenda
Introduction
RBS
RNC
Transport/RXI
13. Commercial in confidence RAN Architecture and Products 2005-09-26
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RNC main tasks in network
• Manage the Radio Access
Bearers for user data transport
• Manage and optimize Radio
Network resources
• Control user mobility
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The 3 RNC Roles
RNC SRNC
Core Network
Node B Node B Node B Node B
Iu Iu
Iur
Iub Iub
Iub Iub
C
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.
UE
UTRAN
SRNS
RNS
SRNC
• Each connected mode UE is
controlled by a Serving RNC
(SRNC)
• The SRNC terminates Iu
towards the CN
• The SRNC terminates Uu L2
UP & CP towards UE
DRNC SRNC
Core Network
Node B Node B Node B Node B
Iu Iu
Iur
Iub Iub
Iub Iub
C
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UE
UTRAN
SRNS
DRNS
Macro
Diversity
Combining/
splitting
function
DRNC
• Inter RNC soft handover requires
a second RNC to be involved
• Such an RNC lending resources
to an SRNC for a specific UE acts
as a Drift RNC (DRNC).
CRNC
• Each RNC acts as
Controlling RNC (CRNC) for
the directly connected Node
B’s and their cells
• The CRNC controls the radio
resources of its cells
CRNC CRNC
Core Network
Node B Node B Node B Node B
Iu Iu
Iur
Iub Iub
Iub Iub
UTRAN
RNS
RNS
15. Commercial in confidence RAN Architecture and Products 2005-09-26
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RNC 3810
RNC subracks housed in BYB 501 cabinet
Small footprint: Size H x W x D (mm) 1800 x 600 x 400
No rear or side access required
Processing capacity increase with new
hardware modules
Two Subrack Types
Main
Extension
Scalable capacity
1-6 subracks in 1-2 cabinets
Only 6 basic board types
Common platform, CPP
HW designed for any mix of traffic (CS/PS)
Hot expansion & repair, Redundant HW and Soft SW upgrade
16. Commercial in confidence RAN Architecture and Products 2005-09-26
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450mm
400
mm
250mm
Cable shelf & air inlet
Fan
CPP Subrack
Up to 28 boards per subrack
– Two Switch Core Boards (SCBs)
– 15 mm board spacing
– PBA size 225 × 265 mm
Generic Slots
– 26 general device boards
19" subrack
– Based on BYB 501
– Hot insertion of boards
– All connectors on board front
– EMC-shielded subracks
– Fan cooled (2 fans)
– Redundant power -48V
17. Commercial in confidence RAN Architecture and Products 2005-09-26
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GPB – General purpose processor board
…. used to implement the Main Processor
SPB – Special purpose processor board
…. used to process data streams in the user plane
SCB – Switch control board
…. ATM switch, inter subrack communication
SXB – Switch extension board
…. inter subrack communication extension
TUB – Timing unit board
…. timing reference, system clock
ETB – transmission interface boards
…. different implementation variants depending on interface type to
support
Boards in the RNC
18. Commercial in confidence RAN Architecture and Products 2005-09-26
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E
T
S
P
B
G
P
B
SCB
SCB
E
T
S
X
B
S
P
B
G
P
B
SCB
SCB
T
U
B
E
T
S
P
B
G
P
B
SCB
SCB
E
T
S
P
B
G
P
B
SCB
SCB
Main subrack Extension
subrack 1
Extension
subrack 2
Extension
subrack n
Fully redundant HW
Distributed processing in clusters
“No impact” on single HW failure
High Availability
GPB General purpose Processor
SPB Special purpose Processor
TUB Timing Unit Board
ET Exchange Terminal
SCB Switch Control Board
SXB Switch Extension Board
19. Commercial in confidence RAN Architecture and Products 2005-09-26
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Main Processor (MP)
High service level
Intended for central control and resource
handling SW and for management services
MP Cluster
Give redundancy on program level
Enable SW Upgrade during
execution
Board Processor (BP)
Aimed for board controlling SW
Slightly lower service level
Special purpose Processor (SP)
Aimed for data stream processing and signaling
Multi Processor system
MP MP
MP
BP
BP
BP
BP
BP
SP
SP
SP
SP
SP
Main Processor Cluster
SXB
GPB
GPB
GPB SCB
SPB
TUB
ETB
RNC Subrack
20. Commercial in confidence RAN Architecture and Products 2005-09-26
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These RNC types (configurations) were available when Cingular
selected RNC’s for their launch (prior to P1)
The “type” figure reflects maximum Iub (in Mbps) capacity
– From 26,000 to 251,000 subs
– Up to 540 RBSs per node
– Max Iub traffic from 35 Mbps to 435 Mbps
RNC 3810 Configurations (HW release 4)
Type
35
Type
115
Type
195
Type
275
Type
435
Type
355
Types selected by Cingular for launch
22. Commercial in confidence RAN Architecture and Products 2005-09-26
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Agenda
Introduction
RBS
RNC
Transport/RXI
23. Commercial in confidence RAN Architecture and Products 2005-09-26
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WCDMA Radio Access Network
3GPP: RBS =Node B
Iu=Iu CS and Iu PS
Iu PS -> Gb in GPRS
Iu CS -> A in GSM
24. Commercial in confidence RAN Architecture and Products 2005-09-26
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Unique AAL2 Switching functionality saves
up to 65% of the transmission link capacity
RXI 820 ATM/AAL2 switch
Ericsson ATM node designed and
optimized for 3G/WCDMA networks
Fully distributed HW support of all
real-time critical functions
Telecom grade availability -
no single point of failure
Small footprint
Common platform to RNC, RBS &
RXI means synergies for O&M,
training and spare part
management
25. Commercial in confidence RAN Architecture and Products 2005-09-26
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Transmission Medium Flexibility
xDSL
xDSL
modem
xDSL
modem
SDH
PDH
TDM
MUX
TDM
MUX
Optical Fibre
Copper
Interface options:
E1/T1/J1, E3/T3, STM-1(VC4)/OC-3c, STM-1(VC12)/OC-3(VT-1.5)
Microwave connection
mini
link
mini
link
CEoIP CEoIP
IP
RNC 3810
End-RBS 3000
Hub-RBS 3000
RXI 820
SDH
ADM
AT
M
SDH
ADM
26. Commercial in confidence RAN Architecture and Products 2005-09-26
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Transport Channel Hierarchy RBS-RNC
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Iub Networking Alternatives
PDH/SONET
Solutions
ATM Cross
Connect Solutions
AAL2 Switching
Solutions
28. Commercial in confidence RAN Architecture and Products 2005-09-26
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Ericsson RAN Network Infrastructure
No AAL2 Switching
gives peak allocated
links
RBS site
ATM connection
for WCDMA traffic
Transmission
infrastructure
Without AAL2 Switching
• CBR ATM connections for
the RBS-RNC traffic are set
up individually
• Capacity requirements
decided by traffic peak case
29. Commercial in confidence RAN Architecture and Products 2005-09-26
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AAL2 Switching
enables sharing link
capacity for many
RBS’s, enabling
savings of up to 65%
Achieving similar benefits as of routed IP networks while preserving
strict radio characteristics requirements of e.g. delay & delay variation
Nodes performing
AAL2 Switching
RBS site
ATM connection
for WCDMA traffic
Transmission
infrastructure
With AAL2 Switching
• RBS-RNC traffic can share
capacity on aggregated links
• Redundancy achieved by
AAL2 load sharing
• QoS separation to ensure
preferential treatment for
voice over R99 PS over
HSDPA
• Efficient RNC port
expansion
Ericsson RAN Network Infrastructure
30. Commercial in confidence RAN Architecture and Products 2005-09-26
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Iub RAN Topologies
Iub network topologies using ATM/AAL2
functionality in RBS and RXI
Verified on network level
RBS
RBS
Hub RBS
/ RXI
Hub RBS
/ RXI
Hub RBS
/ RXI
Hub RBS
/ RXI