01_rn33151en30gla0_rnc architecture and interfaces
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RNCTRANSCRIPT
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RNC Architecture and Interfaces
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Nokia Siemens Networks Academy
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Objectives
After this training module, the student should be able to:
• Explain RNC architectures: cabinet, Plug In Unit (PIU) connection, cabling, Functional Units (FUs), redundancy types and Hardware Management System (HMS) of RNC196, RNC450 and RNC2600
• Explain RU20 RNC configuration and capacity steps for RNC196, RNC450 and RNC2600
• Understand new changes in RU20 (RN5.0) for RNC196, RNC450 and RNC2600
• Understand signalling and data flow in RU20 for RNC196, RN450 and RNC2600
• Explain changes in RU20 for hardware, software, alarms, MML, measurement
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CN
BSS
UE
UTRAN
PS-Domain
CS-Domain
RNS
EI
R HS
S
VL
R
PDN/
Internet
VLR
PSTN
Um
Uu
Abis
A
A
IuCS
Gb Gs
F D C
PSTN
Gf Gc
Gn
Gp
Nc
Mc Mc
Nb
PSTN Nc E G
IuPS
Iur
USIM
IuCS
Gr
Gi
PSTN
PSTN
SIM
Cu
GERAN
BSC BTS
Node B
RNC SGSN
GGS
N
MG
W
MSS
MS
S
MGW
GMSS
Iub
IMS
Go
Other
PLMN
BG
UMTS Basic Network Architecture (Rel 7)
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UTRAN
Iu-CS
Uu
User Equipment (UE)
Iur Iub
DRNC
WBTS
WBTS
WBTS
WBTS
SRNC
Core Network (CN)
3G-SGSN
3G- MSC
Iu-PS
CBC Iu-BC
SAS or
A-GPS Server
Iu-pc or
ADIF
UTRAN Interfaces
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OMU
lower traffic capacity
higher traffic capacity
TDM E1/T1/JT1 1.5-2 Mbit/s
NIWU
FDU WDU
Generic Functional Architecture of IPA2800 ATM E1/T1/JT1
1.5-2 Mbit/s
NIP1
DMCU /TCU
MXU
MXU
TBU Ethernet
10/100 Mbit/s
ATM STM-1 155 Mbit/s
NIS1 NPS1
OMS
Interface Functions
Switching Functions
Control Functions
Signal Processing
System Functions
TDM STM-1 155 Mbit/s
IWS1E IWS1T
IPGO/GE NPGE
IPFE
Ethernet 1G (optical/
electric)
Ethernet 100M
ISU /ICSU
Signaling
RSMU /CACU
…
Resource mangement
A2SU
SFU
SWU
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Generic Block Diagram of IPA2800
MXU
MXU
TBU OMU
WDU
E1/T1/JT1 ATM
STM-1/VC-4 STM-1/VC-3
ATM
Ethernet 100Base-TX
CU*
NIS1
NIP1
NIWU
MXU
OMS
A2SU
CU*
SPU*
FDU
E1/T1/JT1
TDM
IPFE
Ethernet 1G IPGO/GE
IWS1E/T STM-1 TDM
Ethernet 100M
STM-1/VC-4 STM-1/VC-3
ATM
NPS1
NPGE Ethernet 1G
SFU
SWU
Ethernet 100Base-TX
CU*
CU*
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IPA2800 Conceptual Model
Application Software (RNC, MGW) Applications
Signal
Processing
Platform
SW Adjunct
Platform
(NEMU)
Switching
Platform
SW
Fault Tolerant
Computing Platform
Software
Modular and Scalable Hardware (Processing, switching and interface capacity required)
IPA2800
Platform
API API API API
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Mechanics (M2000)
Cabinet mechanics for indoor use
Cabinet contains 4 subracks, 4 fan trays, and power distribution equipment
EMC shielding at subrack level rather than at cabinet level
Front and back cabling
Based on metric dimensioning (IEC/ETSI)
Old hardware mechanics (prior to A5):
IC186-B Indoor Cabinet, 1800*600*600 mm
SRA1 Subrack, ATM, type 1
SRA2 Subrack, ATM, type 2
FTRA Fan Tray
New hardware mechanics (A5HW):
EC216 Equipment Cabinet, 2100*600*600 mm
SRA3 Subrack, ATM, type 3
FTRA-B Fan Tray 1200W
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Similarities and Differences of DX200 and IPA2800 (Optional)
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Comparison of IPA2800 & DX200 Platforms
Similarities and Differences: Hardware Platform
All plug-in units are different in IPA2800 platform and DX 200 platform. However, plug-in units may contain common hardware blocks in some cases.
System internal communication: ATM vs. Message Bus and LAPD channels
Hardware Management System (HMS) replaces Wired Alarms, and provides new functionality.
Similarities and Differences: Computing Platform
Major improvements visible to application level will be: POSIX, I/O architecture, System Maintenance, Chorus Computing Platform
Similarities and Differences: Switching Platform
Switching based on ATM: a lot of ATM-specific additional functionality
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DX 200 / IPA 2800 Platform
Both Platform support the common features:
• Distributed Processing Architecture
• Modularity
• Common Hardware
• Modular Software
• Fault Tolerance
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IPA2800 Redundancy Principles
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2N Redundancy
2N Redundancy (duplication)
• one spare unit designated for one active unit
• Software in the unit pair is kept synchronized
(hot-standby) -> fast switchover
Active
Hot stand-by
2N redundancy principle
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Replaceable N+1 Redundancy
• Replacement (N+1) or (N+m)
• one or more units designated to be spare units for a group
• allocating resources to a unit defines it as active, not allocating resources defines to be spare
• spare unit can replace any active unit in the group -> slower switchover, requires warming (cold-standby)
• users responsibility to change the working state of the unit to reflect the resource allocation situation and to leave at least one spare unit
Active
Active
Stand-by
N+1 redundancy principle
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SN+ Redundancy (Load Sharing)
SN+ (Load Sharing)
• no spare units, group acts as a resource pool
• number of units selected so that there is overcapacity
• if a few units are disabled, the whole group can still perform its functions
Active
Active
Active
SN+ redundancy principle
Active
Active
Fail
Load
33%
33%
33%
Load
50%
50%
0%
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Functional Unit Redundancy Principles
No redundancy
• no special requirements for reliability
No Redundancy is needed in cases where the redundancy of a unit would not
noticeably increase the overall availability performance of the unit type.
For example:
RNC: OMS
BSC: ET
The 2–Mbit/s exchange terminal (ET), where the probability of failure of the 2–
Mbit/s line is expected to be much greater than that of the exchange terminal
hardware.
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Multiplex Section Protection (MSP 1+1)
Physical Layer Protection (MSP 1+1)
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Exercise
1. List 2 Network Elements use IPA2800 Platform ____________________________________
2. Fill in redundancy type to match description
Redundancy Type Description
If a few units are disabled, the whole group can still perform its functions
Spare unit can replace any active unit in the group slower switchover
Software in the unit pair is kept synchronized Fast switchover
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RNC Mechanical Design
RNC450 and RNC2600
CPD120A Cabinet (H=2100mm) RNC196
CPD80B Cabinet (H=1800mm)
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Connector panels
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Fan Tray (FTRA-B)
Forced cooling for subracks (max power dissipation per subrack 1,2kW)
FTRA-B is used with 2000mm cabinet
Fans are controlled and supervised by HMS via fan control and supervision HWB located in PD30
M0 M1
Control and alarm Interface (rear cable)
M2 M3
M4 M5
M6 M7
PD30 Plug-in unit
2 x –48vdc
2 x CAN
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RNC196 and RNC450 Architecture
The network element consists of the following parts:
•Network interface functions
•Switching and multiplexing functions
•Control plane functions
•User plane functions O&M functions
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RNC2600 Architecture
Some units from earlier releases areno longer exist, because
– The functionalities are embedded to other units, or
– The unit is no longer supported
The units are:
– GTPU, functionalities are embedded to NPS1(P) and/or NPGE(P)
– A2SU, functionalities are embedded to NPS1(P)
– RRMU, functionalities are distributed to ICSU and OMU/RSMU
– NIS1(P), replaced with NPS1(P)
– NIP1, no more PDH interface are supported
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RNC Functional Units in RU20
SFU
MXU
HDD WDU
EHU
TBU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
NIU - NIS1(P)*
A2SU*
GTPU* MXU
NIU - NIP1*
PDU
NIU - NPGE(P)
NIU - NPS1(P)
* Only unit in RNC196 / RNC450
RSMU
RRMU
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New Plug-in Units in RNC2600
SF20H
MX1G6-A
CDSP-DH
NP8S1-B
NP2GE-B
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Block Diagram and Plug-in Unit Variants for RNC2600
FU/Product PIU Variant
ICSU CCP18-A
RSMU CCP18-A
OMU CCP18-A
DMCU CDSP-DH
SFU SF20H
MXU MX1G6-A
SWU ESA24
WDU HDS-B 73G
OMS (integrated)
MCP18-B
TBUF TBUF
TSS3 TSS3
PDU PD30
NPS1 NP8S1-B
NPGE NP2GE-A
Standalone
or Integrated
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Blank Slide for Note page
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RNC2600 Functional Unit Removed from Non-exist units Non-exist units
• Some units from earlier releases are no longer exist, because
– The functionalities are embedded to other units, or
– The unit is no longer supported
• The units are:
– GTPU, functionalities are embedded to NPS1(P) and/or NPGE(P)
– A2SU, functionalities are embedded to NPS1(P)
– RRMU, functionalities are distributed to ICSU and OMU/RSMU
– NIS1(P), replaced with NPS1(P)
– NIP1, no more PDH interface are supported
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Change in RU20 (RN5.0) for RNC196/RNC450 and RNC2600
• Change of RNC196 in RU20 (RN5.0)
• Change of RNC450 in RU20 (RN5.0)
• Change of RNC2600 in RU20 (RN5.0)
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Change of RNC196 in RU20 (RN5.0)
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Change of RNC196 in RU20 (RN5.0)
• Common Iub interface has been removed from RNC functionality
• Broadband interfaces has been updated
- Functional unit NPGE or NPGEP offers IP over Ethernet interfaces.
- NPGE or NPGEP is introduced with RAN1225: IP Interface Upgrade for RNC196 and RNC450
• Connectivity rule has been updated
- CBR AAL2 Path VCC: PCR
- UBR+ AAL2 Path VCC: max( 0.1 * PCR, MDCR )
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Change of RNC196 in RU20 (RN5.0)
• HSUPA and HSDPA peak rate information has been updated in CDSP-DH upgrade for HSDPA peak rate per user
The RNC196 HSPA capacity
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Change of RNC196 in RU20 (RN5.0)
• Table Capacity and reference call mix model has been updated
• NPS1/NPS1P interfaces has been added toRNC196 architecture
• RNC196 capacity step 8 information has been added toRNC 196 capacity
• New figure RNC configuration and plug-in locations in capacity step 8 has been added.
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RNC196 Capacity Steps
RNC196, 8 steps
Capacity steps:
1.RNC196/48
2.RNC196/85
3.RNC196/122
4.RNC196/159
5.RNC196/196
6.RNC196/300 (RAS05.1)
7.RNC196/450 (RAS05.1)
8.RNC196/1000 (RU20)
• Step 6 is achieved by:
– Removing NIP1 and FDU.
– Replace HDS-A with HDS-B.
– Add more ICSU, GTPU, MXU and A2SU.
– Add more NIS1(P).
• Step 7 is achieved by upgrade computer units at step 6 to latest version.
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RNC 196/1000M in RU20 (RN5.0)
The capacity of RNC196/450M is increased to 1000 Mbit/s (Iub) by removing some units and replacing them with other functional unit:
• SF10 is removed and replaced with SF10E.
• NIS1, A2SU are removed and replaced with NPS1.
• GTPU is removed and re-configured as ICSU.
• Eight more CDSP-DH units are configured.
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RNC2600 Traffic Flow GTP termination in NIU
• NIU, NPGE(P) or NPS1(P), covers GTPU functionalities in RNC2600, that is termination of UDP/IP protocol in Iu-PS interface.
ATM
IP
GTP’ GTP
UDP
ATM
GTP’
ATM ATM
IP
GTP
UDP
3G-SGSNNPS1DMPG
SNAP
LLC
AAL5AAL5
SNAP
LLC
GTP appl.
AAL5AAL5
GE
IP
GTP’ GTP
UDP
ATM
GTP’
ATM GE
IP
GTP
UDP
3G-SGSNNPGEDMPG
GTP appl.
AAL5AAL5
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RNC196 Capacity Figure
RNC196
196/48 196/85 196/122 196/159 196/196 196/300 196/ 450
196 /1000
Number of subscribers 59000 122000 181000 240000 300000 300000 360000 1000000
BHCA 52000 108000 160000 216000 272000 272000 320000 1000000
Erlangs 1300 2700 4000 5400 6800 6800 8000 20000
Iub throughput Mbit/s 48 85 122 159 196 300 450 1000
Number of carriers 384 576 768 960 1152 1152 1152 1800
Number of BTSs 170 256 340 420 512 512 512 600
AAL2UP connectivity Mbit/s (AL2S-D)
950 1450 1950 2400 2800 3594 3594 -
AAL2UP connectivity Mbit/s (NP8S1B)
- - - - - - - 5100
RRC connected mode users
20000 30000 40000 50000 60000 70000 100000 100000
HSDPA on IuPS Mbit/s 43 94 109 140 176 270 405 900
HSUPA on IuPS Mbit/s 13 23 32 42 53 81 122 270
Number of HSDPA carriers
384 576 768 960 1152 1152 1152 1800
Number of HSDPA BTSs 170 256 340 420 512 512 512 900
Note: Capacity and reference call mix model
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RNC196 Interface Capacity
RNC196/
STM-1 / OC-3 E1 / T1 Gigabit Ethernet
Unprotected Protected Unprotected Unprotected Protected
48 24 16 + 16 64 8 4 + 4
85 24 16 + 16 96 10 5 + 5
122 24 16 + 16 128 12 6 + 6
156 24 16 + 16 160 14 7 + 7
196 24 16 + 16 192 16 8 + 8
300 24 24 + 24 16 16 8 + 8
450 24 24 + 24 16 16 8 + 8
1000 24 24 + 24 16 16 8 + 8
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Change of RNC450 in RU20 (RN5.0)
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Change of RNC450 in RU20 (RN5.0)
•Common Iub interface has been removed from RNC functionality
• Broadband interfaces has been updated
- Functional unit NPGE or NPGEP offers IP over Ethernet interfaces.
- NPGE or NPGEP is introduced with RAN1225: IP Interface Upgrade for RNC196 and RNC450
• Connectivity rule has been updated
- CBR AAL2 Path VCC: PCR
- UBR+ AAL2 Path VCC: max( 0.1 * PCR, MDCR )
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Change of RNC450 in RU20 (RN5.0)
• HSUPA and HSDPA peak rate information has been updated in CDSP-DH upgrade for HSDPA peak rate per user
The RNC450 HSPA capacity
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RNC450 Configuration Steps
Configuration steps:
1.RNC450/150
2.RNC450/300
3.RNC450/450
• 3 basic capacity option
and 6 carrier-optimised option.
1
2
3
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RNC450 Capacity Basic Option
RNC450/150 RNC450/300 RNC450/450
Number of subscriber 181000 284000 360000
BHCA 240000 375000 576000
Erlangs 4000 6250 8000
Iub throughput Mbps 150 300 450
Number of carriers 600 900 1152
Number of BTS 200 300 512
AAL2UP connectivity Mbit/s 1950 2800 3594
RRC connected mode users 35000 70000 100000
HSDPA on IuPS Mbps 135 270 405
HSUPA on IuPS Mbps 41 81 122
Number of HSDPA carries 600 900 1152
Number of HSDPA BTS 200 300 512
Note: Capacities with NSN traffic mix model
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RNC450 Capacity Figure Carrier Optimised
RNC450/150
Carrier opt1
RNC450/150
Carrier opt2
RNC450/150
Carrier opt3
RNC450/150
Carrier opt4
RNC450/300
Carrier opt
RNC450/450
Carrier opt
Number of subscriber 181000 181000 181000 181000 309000 454000
Busy Hour Call Attempt 240000 240000 240000 240000 408000 720000
Erlangs 4000 4000 4000 4000 6800 10000
Iub throughput Mbps 135 105 80 50 180 250
Number of carriers 660 720 780 840 1200 1800
Number of BTS 220 240 260 280 400 600
AAL2UP connectivity Mbit/s
1950 1950 1950 1950 2800 3594
RRC connected mode users
35000 35000 35000 35000 75000 100000
HSDPA on IuPS Mbps 122 95 72 45 163 227
HSUPA on IuPS Mbps 36 28 21 13 49 67
Number of HSDPA carries
660 720 780 840 1200 1800
Number of HSDPA BTSs 220 240 260 280 400 600
Note: Capacities with NSN traffic mix model
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RNC450 Interface Capacity
RNC450
STM-1 / OC-3 E1 / T1 Gigabit Ethernet
Unprotected Protected Unprotected Unprotected Protected
150 16 8 + 8
or 12 + 12 (if no E1/T1)
16 8 4 + 4
300 24 16 + 16
or 20 + 20 (if no E1/T1)
16 12 6 + 6
450 24 24 + 24 16 16 8 + 8
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Change of RNC2600 in RU20 (RN5.0)
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Change of RNC2600 in RU20 (RN5.0)
• New standalone OMS in RNC2600 architecture
• Number of recommended BTSs has been updated to 1600 BTSs
• Values in BHCA calculation have been updated
BHCA = AMR (Erl) / MHT * 3600
MHT used in the formula is 90s according to NSN traffic profile
• Capacity related updates throughout RNC2600 capacity
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RNC2600 Configuration Steps
Configuration steps:
1. RNC2600/step1
2. RNC2600/step2
3. RNC2600/step3
Capacity is licensed
• Iub PS data throughput (Mbit/s)
• AMR capacity (Erl)
• Number of carriers
1
2
3
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RNC2600 Capacity
RNC2600 step 1 RNC2600 step 2 RNC2600 step 3
Number of subscribers 680 000 1 360 000 2 000 000
BHCA (CS) 680 000 1 360 000 2 000 000
CS Erlangs 17 000 34 000 50 000
CS Erlangs (including softhandover) 23 800 47 600 70 000
BHCA (PS) 800 000 1 400 000 2 000 000
DL Iub throughput Mbit/s 1 100 1 800 2 500
DL + UL Iub throughput Mbit/s 1540 2520 3500
Number of carriers 1 440 2 100 2 800
Number of BTSs 1 440 2 100 2 800
RRC connected mode subscribers 100 000 152 000 200 000
Iu-PS HSDPA net bit rate [Mbit/s] 990 1 980 2 250
Iu-PS HSUPA net bit rate [Mbit/s] 297 594 675
HSDPA carriers 1 440 2 100 2 800
HSDPA BTSs 1 440 2 100 2 800
Note: Capacities and reference call mix model
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RNC2600 Traffic Flow DSP pool configuration
• RNC2600 use CDSP-DH only
– Two powerful DSPs on each DMPG
• CCH DSPs process CCH for cells
• non-CCH DSPs process R99 DCH and HSPA
DMCU
DMPG
PPC
DMPG
PPC
DMPG
PPC
DMPG
PPC
CCH non-
CCH
non-
CCH
non-
CCH
CCH non-
CCH
non-
CCH
non-
CCH
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RNC2600 Traffic Flow AAL2 switching in NPS1(P)
NIS1(P) or
NIP1 A2SU DMPG A2SU
NPS1(P) DMPG 1CID
AAL2 VCC AAL2 VCC
AAL2 VCC NCID 1CID 1CID NCID
AAL2 VCC
NPS1(P) 1CID
NIS1(P)
Iub -
ATM
Iub -
ATM
Iu-CS/Iur
-ATM
Iu-CS/Iur
-ATM
Old NE
RNC2600
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RNC2600 Interface Capacity
RNC2600
STM-1 / OC-3 Gigabit Ethernet
Unprotected Protected Unprotected Protected
Step 1 48 24 + 24 16 8 + 8
Step 2 80 40 + 40 24 12 + 12
Step 3 112 56 + 56 32 16 + 16
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General Protocol Model
Application
Protocol
Data
Stream(s)
ALCAP(s)
Physical Layer
Signalling Bearer(s)
Control Plane User Plane Radio
Network
Layer
Signalling Bearer(s)
Data Bearer(s)
Transport
Network
Layer
Transport Network
User Plane
Transport Network
User Plane
Transport Network
Control Plane
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WCDMA L1
RLC
MAC
FP
RNC WBTS UE MGW
Iub Iu Uu
RLC
MAC
PHY
ATM
AAL2
FP
WCDMA L1
CS application
PHY
ATM
AAL2
Iu-UP protocol
PHY
ATM
AAL2
CS application
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
RTP
Iu-UP protocol
PHY
ATM
AAL2
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
RTP
Protocols in the CS User Plane ATM-based option
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WCDMA L1
RLC
MAC
FP
RNC WBTS UE 3G-SGSN
Iub Iu Uu
RLC
MAC
PHY
ATM
AAL2
FP
WCDMA L1
PS application
PHY
ATM
AAL5
PDCP PDCP
IP
GTP-U
UDP
IP
GTP-U
UDP
PHY
Link Layer
IP
GTP-U
UDP
Gn
IP
GGSN
PHY
IP
GTP-U
UDP
PHY
Link Layer
IP
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
PHY
ATM
AAL2
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
Ethernet -MAC
PHY
ATM
AAL5 Ethernet -MAC
Ethernet -Phy
Ethernet -Phy
Protocols in the PS User Plane
CN
IP-based option
ATM-based option
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Protocols in the UE Control Plane
RNC WBTS UE CN
WCDMA L1
Iub Iu Uu
RLC
MAC
PHY
ATM
AAL2
FP
WCDMA L1
RLC
MAC
PHY
ATM
AAL5
SSCOP
RANAP
MTP3b
SCCP
PHY
ATM
AAL5
SSCF-NNI
RANAP
MTP3b
SCCP
SSCOP
NAS
NAS
M3UA
SSCF-NNI SCTP
IP
RRC RRC
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
PHY
ATM
AAL2
FP
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
PHY
ATM
AAL5
Ethernet -MAC
Ethernet -Phy
IP-based option
ATM-based option
M3UA
SCTP
IP
PHY
ATM
AAL5
Ethernet -MAC
Ethernet -Phy
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PHY
ATM
AAL5
SSCOP
SSCF-UNI
NBAP
WBTS D-RNC
PHY
ATM
AAL5
SSCOP
SSCF-NNI
RNSAP
MTP3b
SCCP
S-RNC
Iub Iur
Ethernet-Phy
Ethernet
-MAC
IPv4
SCTP
PHY
ATM
AAL5
SSCOP
SSCF-UNI
NBAP
Ethernet
-Phy
Ethernet
-MAC
IPv4
SCTP M3UA
SCTP
IPv4
Ethernet
-Phy
Ethernet
-MAC
PHY
ATM
AAL5
SSCOP
SSCF-NNI
RNSAP
MTP3b
SCCP
M3UA
SCTP
IPv4
Ethernet
-Phy
Ethernet
-MAC
Protocols in the Iub and Iur Control Plane
IP-based option
ATM-based option
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User Data and Signalling Flow in RNC
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
Permanent Signalling Links Traffic Flow
ATM
Iub/Iu/Iur
IP
Iub/Iu/Iur
Standalone or Integrated
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
Common Control Channel Traffic Flow
ATM Iub
IP Iub
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
Dedicated Control Channel Traffic Flow
ATM Iub
IP Iub
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
CS User Data Traffic Flow
ATM Iub
IP Iu-CS
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
PS User Data over DCH
ATM Iub
IP Iu-CS
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
PS User Data over FACH/RACH
ATM Iub
IP Iu-CS
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SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
HSPA User Data
ATM Iub
IP Iu-CS
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Review of RNC Architecture and Interfaces
• UMTS Networks and NSN RNC Overview
• RNC2600
• RNC196 and RNC450
• RNC Protocol and Transport Options
• Traffic Flow Examples
• Review Questions
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Review Questions
1. Describe the role of functional units: ▪ RSMU
▪ ICSU
▪ DMCU
▪ OMU
▪ MXU
▪ SFU
2. Explain the difference between NIS1 and NPS1.
3. List all the configuration steps of RNC2600 and the number of cabinets and subracks equipped with plug-in units.
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WCDMA L1
RNC WBTS UE MGW Iub Iu Uu
MAC
PHY
ATM
FP
WCDMA L1
CS applicatio
n
PHY
ATM
PHY
ATM
AAL2
CS application
Ethernet-Phy
Ethernet-MAC
IPv4
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
Iu-UP protocol
PHY
ATM
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
Ethernet-Phy
Ethernet-MAC
IPv4
UDP
IP-based option
ATM-based option
Review Questions
4. Fill in the missing protocol names in CS domain.
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Review Questions
5. Draw the flow of PS data over HSPA through the RNC. Assume that both IP-based Iub and Iu-PS are used.
SFU
MXU
RSMU
HDD WDU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
MXU
NIU - NPGE(P)
MXU
NIU - NPS1(P)
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RNC Functional Units
This is optional module
In case participant has not attend RNC Architecture e-learning or IPA2800 platform
following slides should be cover training
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RNC Functional Units in RU20
SFU
MXU
HDD WDU
EHU
TBU
ICSU
DMCU
OMU
OMS
SWU
DMCU
ICSU
NIU - NIS1(P)*
A2SU*
GTPU* MXU
NIU - NIP1*
PDU
NIU - NPGE(P)
NIU - NPS1(P)
* Only unit in RNC196 / RNC450
RSMU
RRMU
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RNC Units Redundancy Type Functional Unit Redundancy principle
DMCU SN+
EHU None
ICSU N+1
MXU 2N
OMS None
OMU 2N
RSMU 2N
SFU 2N
TBU 2N
WDU 2N
OMS HDD 2N
NPS1 None
NPGE None
NPS1P 2N (MSP 1+1 / APS 1+1)
NPGEP 2N
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SFU: Switching Fabric Unit (1/2)
Functions:
• Serves as the main switch fabric of the exchange.
• Provides redundant, fully accessible and non-blocking connection at ATM level.
• Supports both point-to-point and point-to-multipoint connection topologies.
• Handles various ATM service categories.
Type: Switching Fabric
Redundancy: 2N
Plug-in unit: SF10, SF10E and SF20H
Interfaces: Network Interfaces
Low bit-rate network interface and control computer
(via MXU)
OMU from the unit computer of SFU via MXU
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SFU: Switching Fabric Unit (2/2)
SF10 SF10E SF20H
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MXU: Multiplexer Unit (1/2)
Functions:
• Enable connection of the low-to-medium bit-rate signal processing units and computer units, as well as low-bit-rate network interface units, to the ATM switch fabric
• Multiplexes/de-multiplexes traffic from tributary units to the ATM switching fabric vice versa.
• ATM layer functions such as header translation, UPC/NPC parameter control, OAM functions, traffic management.
Type : Multiplexer Unit
Redundancy : 2N
Plug-in unit : MX622-B, MX622-C, MX622-D, MX1G6, MX1G6-A
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MXU: Multiplexer Unit (2/2)
MX622-B/C/D MX1G6-/A
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A2SU: AAL Type 2 Switching Unit (1/2)
Functions:
• Performs minipacket switching of AAL2 CPS.
• Collects AAL2 layer statistics
This unit is no longer needed when network interface unit NIP1 and/or NIS1(P) are not used in RNC.
Type : Signal Processing Unit
Redundancy : SN+
Plug-in unit : AL2S-B/D
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A2SU: AAL Type 2 Switching Unit (2/2)
AL2S-D AL2S-B
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OMU: Operational and Management Unit (1/2)
Functions:
• Cellular management
– Handles all RNC's crucial upper-level system maintenance functions
– Serves as an interface between OMS and the other units of the network element
– Maintains radio network configuration and recovery
– Houses radio network database and ATM/IP configuration database
– Has dedicated storage devices
• Basic maintenance
– Hardware configuration management
– HMS supervision
– Centralised recovery functions
Type: Computer unit with a dedicated storage device unit as a sub-unit
Redundancy: 2N
Plug-in unit: CCP10, CCP18-A
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OMU: Operational and Management Unit (2/2)
CCP18-A CCP 10
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OMU's Storage Device
• New plug-in unit HDS-B, consist of two Hard Disk Drive (HDD): One for OMU and another for OMS
• 73 GB formatted storage capacity/disk
• Redundancy type : 2N
• External devices: USB memory stick, one for each OMU (for CCP18-A only)
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Configuration and redundancy principle of OMU's storage devices
• The two mutually redundant WDUs are connected simultaneously to both OMUs by means of separate SCSI buses.
• SCSI connection is shown on the figure beside. (CCP18-A and HDS-B)
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ICSU: Interface Control and Signalling Unit (1/2)
Functions:
• Handles signalling transaction and RRM functions:
– Signalling protocols to Iu, Iub, Iur and Iu-BC interfaces for
▪ NBAP, RNSAP, RANAP, SABP signalling
▪ ALCAP (Q.2630.1) signalling ,RRC signalling
– Termination of the UNI-SAAL, NNI-SAAL/MTP-3 and SCTP/M3UA signalling associations
– Monitoring and recovery of the signalling links
– Distributed RRM functions
▪ Admission control (AC), Handover control (HC)
▪ Load control (LC) , Packet scheduling (PS)
– Location calculations for location-based services
Type : Computer Unit with no sub units
Redundancy : N+1
Plug-in unit : CCP10, CCP18-A, CCP18-C
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ICSU: Interface Control and Signalling Unit (2/2)
CCP18-A CCP18-C CCP10
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Resource and Switch Management Unit (1/2)
Functions:
• Controls the switch fabrics in RNC
• Establishes connections for calls according to requests from the signalling computer units (ICSUs).
• Handles DSP resource management. – Allocation of the DSPs and associated computer resources to different tasks, such as
macrodiversity combining and data traffic functions.
– supervision and management of the DMCU units, including the necessary software upload procedures
– management of the ATM connections within DMCU
• ATM switching management functions: – Establishment of both internal and external connections via the SFU
– Management and control of the SFU, A2SU and MXU.
– Transmission resource management.
Type : Computer Unit
Redundancy : 2N
Plug-in unit : CCP10, CCP18-A, CCP18-C
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Resource and Switch Management Unit (2/2)
CCP18-A CCP18-C CCP10
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GTPU: GPRS Tunnelling Protocol Unit (1/2)
Function:
• Facilitates RNC connections towards the SGSN by performing those RNC-specific Iu user plane functions which are related to GTP protocols
– Routing based on GTP tunnel ID
– UDP/IP (User Datagram Protocol / Internet Protocol) protocols termination
– IP and GTP protocol processing
This unit is no longer needed if Iu-PS interface is implemented using new network interface unit, NPS1(P) or NPGE(P)
Type : Computer Unit with no sub unit
Redundancy : SN+
Plug-in unit : CCP10, CCP18-A, CCP18-C
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GTPU: GPRS Tunnelling Protocol Unit (2/2)
CCP18-A CCP18-C CCP10
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DMCU: Data and Macro-Diversity Combining Unit
Purpose:
• WCDMA L1 functions, including macro-diversity combining (MDC) and outer loop power control.
• RLC-U and RLC-C protocol processing
• MAC-C and MAC-D protocol processing
• PDCP (Packet Data Convergence Protocol) protocol processing
• GTP termination
• Encryption
• HSDPA with CDSP-C
Type : Signal processing unit with no sub unit
Redundancy : SN+
Plug-in unit : CDSP-C, CDSP-DH
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DMCU: Data and Macro-Diversity Combining Unit
CDSP-C CDSP-DH
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OMS: Operation & Maintenance Server Unit(1/2)
Purpose:
• RNC element management tasks and local user interface
• Provides interface toward higher-level network management function, such as OSS
• Provide graphic-based local interface
• Processing fault and performance management data
• Support for configuration management in RNC
• O&M functions which are not handled by other computer units of the RNC
• post-processing support for measurement and statistics
• peripheral device control
Type : Computer unit, with dedicated storage devices and the Ethernet Switch unit as sub-units
Redundancy : None
Plug-in unit : MCP18-B
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OMS: Operation & Maintenance Server Unit (2/2)
MCP18-B
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OMS’s Storage Device
• New plug-in unit HDS-B, consist of two Hard
Disk Drive (HDD): One for OMU and another for
OMS
• 73 GB formatted storage capacity/disk
• Redundancy type : 2N
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Configuration and redundancy principles of OMS storage devices
• OMS has two redundant disk with RAID0 configuration
• SCSI connection is shown on the figure beside. (MCP18-B and HDS-B)
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ESA: Ethernet Switch for ATM 24 Ports
• Provides physical LAN/Ethernet interfaces for connections between OMS and the other units of the network element.
• The ESA24 upgrade increases LAN switching capacity.
• Redundant ESA24 is needed for AGPS feature
Type: Sub unit to OMS
Redundancy: None/2N
Capacity/ Performance: 24 physical 10/100 Base-T Ethernet interfaces
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Standalone OMS
• 1RU high server that is mountable to a standard 19 inch rack
• Concentrates operation and management traffic and performs operation and management activities towards the RNC and WCDMA Base Stations under control of NetAct
• Local management interface towards RNC network elements with basic centralised alarm and performance management capabilities
• Capable of handling capacity of RNC2600, 1 600 WCDMA BTSs and 4 800 cells
• Capable of handling different types of mass management operations under the control of NetAct
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Standalone OMS
Benefit:
• State-of-the-art feature set
• High quality, proven software platform
• Scalable, efficient architecture
• Accurate status of the network
• Local operation interface
• Secure software platform
• Easy to place and install
OMS HW: HP ProLiant DL360 G6 1U rack-mount server
Redundancy: None
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Standalone OMS Interfaces
• RNC OMS connects to RNC through Nokia Siemens Networks’ management interface EMT
• All fault management, performance management, configuration and software management transactions to/from RNC OMS are transferred over the EMT interface
• The NWI3 and EMT management interfaces used in Nokia Siemens Networks WCDMA systems provide sophisticated functional capabilities, reliability and efficiency
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Network Interface Unit PDH (NIP1)
• Provides 16 physical electrical PDH (E1/T1/JT1) interface
• Execute physical and ATM layer functionalities
• Provides ATM header translation, OAM function and Traffic policing.
• Provides an optional reference clock for timing and synchronisation
• Support Inverse Multiplexing for ATM (IMA)
• Redundancy: None
• Plugin unit : NI16P1A
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Concept of IMA
Tx direction: cells distributed across links in round robin sequence
Rx direction: cells recombined into single ATM stream
Physical Link #0
Single ATM Cell Stream from ATM Layer
IMA Virtual Link
IMA Group
PHY
PHY
PHY Physical Link #1
Physical Link #2
IMA Group
PHY
PHY
PHY
Original ATM Cell Stream to ATM Layer
• Low bit rate transmission lines can be combined into a group that seen as a single virtual link by ATM
• IMA sublayer is part of the physical layer.
• It is located between the traditional Transmission Convergence sublayer and the ATM layer.
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Network Interface Unit SDH (NIS1/NIS1P)
• Provides STM-1/OC-3 external interface
• Execute physical and ATM layer functionalities
• Provides ATM header translation, OAM function and Traffic policing.
• Provides an optional reference clock for timing and synchronisation, handles bit timing, line coding, and timing recovery
• Support MSP1+1
• Redundancy: None/2N
• Plugin unit : NI4S1-B
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Network Interface Unit NPS1(P) • Functions:
– Provides 8 SDH STM-1/STM-4 interfaces and an RJ45 connector, and handles multiprotocol packet processing at wire speed and network connectivity
– Maps ATM cells to/from transmission frame structure of SDH/Sonet.
– Performs AAL2 minipacket switching.
– Translates ATM header.
– Performs UPC/NPC, traffic management, performance management and performance data collection.
– Provides optional reference clock for timing and synchronisation.
• It supports MSP1+1 / APS1+1 for SDH/Sonet
• Redundancy type: NONE or 2N
• Plugin unit type
– NP8S1, NP8S1-A, NP8S1-B (two slots wide)
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Network Interface Unit NPGE(P)
• Functions:
– Provides Ethernet interfaces and handles multiprotocol packet processing at wire speed.
– Two 1000Base-LX/T (optical or electrical) Gigabit Ethernet interfaces and two 10/100 Base-T (electrical) Fast Ethernet interfaces
– Maps IP packet to/from transmission frame structure of Ethernet.
– Translates IP header.
– Performs traffic management, performance management and performance data collection.
– Terminates GTP protocol when used at Iu-PS.
• Redundancy type: NONE or 2N
• Plugin unit type
– NP2GE, NP2GE-A, NP2GE-B
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Power Distribution System (1/2)
Functions:
• Distributes the -48 V/-60 V power from the rectifiers or batteries to the equipment inside the RNC cabinets
• Consists of:
– Cabinet Power Distributor
– Subrack Power Distributor
• Subrack power distributor controls the cooling equipment of its own subrack on the basis of messages sent by the OMU
Redundancy : 2N
Units : CPD80/120-A
PD20/30
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Power Distribution System (2/2)
PD20/30
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Power distribution principle and redundancy
To ensure 2N redundancy for the power distribution lines, the RNC cabinets are provided with two independent feeding input branches
Each CPD120-A unit contains:
• Connectors for one of the two mutually redundant supply lines from the batteries/rectifiers. In this way the two independent input branches are kept separate until the subrack level.
• Connectors for four supply lines to the subracks. Each subrack is supplied by a line from both CPD120-As, giving 2N redundancy.
• Circuit breakers for the outgoing supply lines, each with 30-A rating
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Fuse Connection
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
38
FB1
FB2
FB3
FB4
FA1
FA2
FA3
FA4
FA5 and FB5 to fan tray FTRx
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Timing and Buffering Unit (1/2)
Functions:
• Responsible for the network element synchronization, timing signal distribution and message transfer functions in the hardware management system
• Receives an input timing signal from upper network level, adjusts its local oscillator to long time mean value and delivers this synchronised timing signal as system timing to all plug-in units.
• Operates in plesiochronous mode, if all synchronisation are lost
• Collect alarms from the PIUs in the same subrack and transfer them to HMS master (OMU)
• 3 synchronisation inputs from line interface card
• 8 synchronisation outputs support maximum 8-cabinet configuration
Redundancy: 2N
Plug-in unit: TSS3/A and TBUF
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Timing and Buffering Unit (2/2)
TSS TBUF
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Network Timing and Synchronisation
PRC MSC
RNC MGW
BS
MSC PRC
BS BS
PRC PRC
PRC
PRC
PRC = Primary Reference Clock
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RNC Timing and Synchronisation
TSS3
NPS1(P) 2
NPS1(P) 3
NPS1(P) 4
CPSY-A
CPSY-B
TSS3 Timing
signal to PIU
Timing signal to
PIU
TBUF
TBUF
TBUF
TBUF
Timing Bus 1 Timing Bus 0
Timing Ref. 1
Timing Ref. 2
Timing Ref. 3
ext. Sync
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Connection principle and redundancy for the timing and synchronisation distribution bus
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External Hardware Unit
Functions:
• Receive external alarms and send as alarm message to OMU via HMS bus
• Drive the optional External Hardware Alarm panel (EXAU-A / EXAU), the cabinet integrated lamp, and possible other external equipment.
Redundancy: No
Plugin unit: EHAT
EXAU EHAT
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RNC Units Summary
Functional Unit (redundancy)
Supported HW
OMU (2N) CCP18-A
WDU (2N) HDS-A or HDS-B, with WDW18, WDW36 or WDW73.
FDU (2N) MDS-A
OMS (No) MCP18-B (4GB memory)
HDD (2N) HDS-A or HDS-B, with WDW73 or WDW147
RSMU (2N) CCP10, CCP18-A, CCP18-C
ICSU (N+1) CCP10, CCP18-A, CCP18-C
DMCU (SN+) CDSP-C (int. D), CDSP-DH
GTPU (SN+) CCP10, CCP18-A, CCP18-C
A2SU (SN+) AL2S-D
NIU (No or 2N) NI16P1-A, NI4S1-B, NP8S1, NP8S1-A, NP8S1-B, NP2GE, NP2GE-A, NP2GE-B
SFU (2N) SF10, SF10E, SF20H
MXU (2N) MX622-B, MX622-C, MX622-D, MX1G6, MX1G6-A
SWU (No) ESA24
TBU (2N) TSS3, TBUF
EHU (No) EHAT
PDU (2N) CPD80, CPD120, PD20, PD30
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Hardware Management System
• Lowest intelligent system
• Running on HMS bus, comprises 3 node types:
– Master Node, head of HMS
– Bridge Node, divide HMS network into subsystem, which physically each subrack.
– Slave Node, interface toward PIUs
• Function of HMS
– Collect equipment data from the equipped PIUs
– Transfer of system initialisation data
– Collect HW fault notification
– Control and supervise external or auxiliary equipments
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Hardware Management System
HMMN = Hardware Management Master Node
HMSB = HMS Bridge
HMSS = HMS Slave
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Change in RU20
Reference reading material:
Nokia Siemens NetworksWCDMA RAN, rel. RU20,operating documentation
DN70515054: Changes in RU20 DN70357656: Changes in configuration parameters for radio network, ATM transport plan, and IP transport plan
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RU20: New MML Programs
Q9 DHCP Server Data Handling
Use this command group to maintain the data on DHCP server.These commands cover a wide range of maneuvers related to DHCP server: configure and interrogate DHCP server options, configure, modify and interrogate pool basic information, bind and unbind pool with unit and network interface,delete IP pool and interrogate pool binding relationship, add and delete IP address ranges, manage and interrogate DHCP client IP address status, manage DHCP server status,manage and interrogate DHCP server log.
UW Preload Handling
Use the command to start system preloading,cancel system preloading and interrogating system preloading information
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RU20 : Modified MML Programs
LJ Bundle and Endpoint Handling
NE Signaling Network State Interrogation
Q8 IP Qos Configuration Handling
QM IP Interface Configuration Handling
QR TCP/IP Stack Data Handling
US Working State an Restart Handling
W7 Licence and Feature Handling
WP Signal Processing Service Handling
WS Software Package and Status Handling
YA EXCHANGE TERMINAL CONFIGURATION HANDLING
YB IMA Group Handling
YG BFD Supervision Handling
YW SDH TRANSMISSION PROTECTION HANDLING
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Differences in the hardware implementation between RU10 (RN4.0) and RU20 (RN5.0)
New plug-in units
TSS3-A, Timing and Synchronization, SDH, Stratum 3,Variant A
New mechanics
Cable-supporting shelves have been changed from CS186-B to CS216-A in RNAC cabinet
RNC OMS hardware changes
Operation and Management Server (OMS) has been introduced as a standalone network element. HP Proliant DL360 Generation 6 hardware platform is used to support the standalone RNC OMS.
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RU20 : RNC New Alarms
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RU20 : RNC Changed Alarms
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RU20 : RNC Changed Alarms
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RU20 : RNC Alarm system configuration changes
RU20 : RNC Removed Alarms
• There are no removed alarms in RN5.0
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RU20 : RNC OMS Changed Alarms
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RU20 : RNC OMS New Alarms
RU20 : RNC OMS Removed Alarms
• There are no removed alarms