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ZXWR RNC Structure and Principle
ZTE University
Content
External Interfaces of RNC
ZXWR RNC Functional Units
ZXWR RNC Subracks
ZXWR RNC Features
ZXWR RNC Configuration
ZXWR RNC Cable Connection
UTRAN Structure
RNC
NodeB NodeB
CN
RNC
NodeBNodeB
UE
External Interfaces of RNC
NodeB
Iub
MGW
Iu-c
s SGSN
Iu-ps
Iur
OMC-BIPOA
OMC-REthernet
RNCU
u
UE
RNC
Content
External Interfaces of RNC
ZXWR RNC Functional Units
ZXWR RNC Subracks
ZXWR RNC Features
ZXWR RNC Configuration
ZXWR RNC Cable Connection
Which Funcitonal unit will be comprised in RNC system
RS485E1 10/100M EthernetSTM-1
PWR 、 FANPWR 、 FAN
Switching
Unit
Switching
UnitO&M UnitO&M Unit
Processing
Unit
Processing
Unit
Peripheral device
monitoring
unit
Peripheral device
monitoring
unit
Access
Unit
Access
Unit
Functional Units of RNC
NodeB
RNC
CN
Iu
Iur
Iub
Provide E1 or STM-1 interface
provides a large-capacity and non-blocking IP switching unit for system control management, communication between service processing boards and traffic connection among multiple Access units
Process control plane signaling and user plane information
Responsible for general processing and implement O&M control
Enviromnet monitor and alarm
O&M unit
responsible for the clock supply and external synchronization
ROMB : RNC Operation & Mentanence Board
CLKG : Clock Generator
Responsible for global process handling of RNC.Responsible for O&M proxy of whole RNC.Managing states of each board, collecting information about each board, and maintaining global static data of whole RNC.Running RPU module to process routing protocol.
SBCX: X86 Single Board Computer
Storing the log and performance data
Access unit
DTB : Digital Trunk Board
IMAB : Inverse Multiplex of ATM Board
SDTB: Sonet Digital Trunk Board
DTB is used to provide E1 interface, and it also supports T1 interface by changing configuration. One of the DTB board provides 32*E1.
IMAB supports IMA protocol and circuit switch processing.
SDTB supports channelized STM-1 interface. One of the SDTB can provide 1*STM-1(63*E1).
Access unit
APBE : ATM Process Board Enhanced
Providing ATM interface of 4STM-1;
Supporting 622M switching capacity and completing AAL2
and AAL5 termination of STM-1 physical interface in RNC;
GIPI provides FE, and GE interfaces and accomplishing IP interface function.- 1*GE optical or electrical interface or- 4*100M FE electrical interface
GIPI : GE IP Interface
Access Unit
EIPI : E1 IP Interface
EIPI provides the IP access based on E1 (working with DTB an
d SDTB). EIPI do not have the external interfaces itself.
One EIPI and two DTB work together, providing at most sity-fo
ur E1 interfaces.
One EIPI and two SDTB work together, providing one STM-1 in
terface.
APBI : ATM Process Board With IMA
Supporting at most 64 E1 and 31 IMA groups, working with DTB
and SDTB to implement the IMA processing of E1 and CSTM-1
interface
Providing four STM-1 external interfaces, supporting the traffic of
622 M, and implementing the AAL2 and AAL5 termination of RNC.
Swtiching unit -- level 1 switching unit
maximum 40G switching capacity , responsible for user plane data switching and converging.
PSN : Packet Switch Network
GLI : Gigabit Line Interface
Providing 4 GE ports and each GE port works in 1+1 backup mode.
GE ports of adjacent GLIs provide GE port backup.
Bi-directional user data switching capability, 40 Gbps in each direction
Switching unit -- level 2 switching unit
Responsible for control plane signaling switching and converging
UIMC : Universal Interface Module of BCTC
UIMU : Universal Interface Module of BUSN
Accomplish internal ethernet switching function in the control subrack.
Accomplish internal ethernet switching and circuit switching inthe resource subrack
GUIM : GE Universal Interface Module
It works with the 1 G resource subrack, implementing the function of RNC level-2 switching subsystem user plane switching.
CHUB : Control HUB
Accomplish the control information converging among subracks.
Processing unit
Iu 、 Iub 、 Uu interface control plane protocal processing;
Radio resource management;
Iu 、 Iub 、 Uu interface user plane data processing;
RUB: RNC User plane processing Board
RCB : RNC Control plane processing Board
Peripheral devices monitor unit
Alarm box will send the different level alarms according to different fault situations of the system in order to be managed and intervened in time by the equipment management personnel.
PWRD : Power Distributor
ALB : Alarm Box
Power distribution;
Monitoring and controlling the environment temperature and
humidity, smog, infrared (alarm for illegal intrusion) and fans.
Content
External Interfaces of RNC
ZXWR RNC Functional Units
ZXWR RNC Subracks
ZXWR RNC Features
ZXWR RNC Configuration
ZXWR RNC Cable Connection
ZXWR RNC Appearance
ZXWR RNC
Dimension:2000×600×800 ( mm )
19 inch standard rack ; One rack includes four
layer subracks, and one subrack includes seventeen slots
CE
Blank panel
Power supply
Cooling fan
subrack
Cable tray
Dust coverage
ZXWR RNC Subrack Structure
Control subrack
Resource subrack
Switch subrack
Uses BCTC as Backboard ,takes charge of processing RNC control plane (RCB&RSB), and also includes ROMP,CLKG,CHUB. CHUB has the function of Switching data.
Uses BUSN as Backboard,takes charge of processing RNC user plane (RUB) and includes GIPI, APBE. If there are more than two resource subracks, switch subrack is needed to switch data.
Uses BPSN as Backboard,takes charge of level 1switch , supplies switch unit for user plane.
Interface subrackUses BUSN as Backboard ,supplies kinds of interfaces, such as E1,STM-1,channelized STM-1,POS and so on.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
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Board function
ZXWR RNC Subrack – Control Subrack
RCB:RNC control board, process the signal of Iux and Uu. UIMC: Universal Interface Module of Control, realize the Ether
net switch among the subracks. ROMB:RNC Operating & Maintenance Board CLKG: Clock Generator, supply the system clock CHUB: Control HUB, converge the control signal among the re
source subracks.
RUB:RNC User Board, process the protocol of user plane. GIPI:GE IP Interface ,provide FE, and GE interfaces APBE:ATM process board enhanced version, provide STM-1, S
TM-4 interface SBCX: O&Munit, storing log, storing performance data GUIM: Universal Interface Module of BUSN, realize the Etherne
t switch among the subracks
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Board function
ZXWR RNC Subrack – Resource Subrack
GLI: Gigabit Line Interface, adapt physical layer, process IP packet and manage traffic volume
PSN: Packet switch network, manage core switch. UIMC: Universal Interface Module of Control, realize the Eth
ernet switch among the subracks
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Board function
ZXWR RNC Subrack – Switch Subrack
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I
APBE : ATM process board enhanced version, provide STM-1, STM-4 interface
IMAB: supply the IMA function DTB: realize E1 interface SDTB: realize channelized STM-1 interface GIPI: realize GE interface GUIM: switch data among the boards in the subrack. EIPI:interface board of RNC. It belongs to the access unit, providing the IP
access based on E1 (working with DTB and SDTB).
Board function
ZXWR RNC Subrack - Interface Subrack
Content
External Interfaces of RNC
ZXWR RNC Functional Units
ZXWR RNC Subracks
ZXWR RNC Features
ZXWR RNC Configuration
ZXWR RNC Cable Connection
Large Capacity——2 Racks for 1 Million Subscribers
Subscribers 1 MillionSubscribers 1 Million
Traffic Vol. 52,500ErlTraffic Vol. 52,500Erl
BHCA 7,000kBHCA 7,000k
Switch Capacity 80GbpsSwitch Capacity 80Gbps
Iu Throughput 6,100 MbpsIu Throughput 6,100 Mbps
Iub Throughput 6,600 MbpsIub Throughput 6,600 Mbps
Max. Node B 1,900Max. Node B 1,900
Max. Cell 5,700Max. Cell 5,700
ZXWR RNC 2 Racks CapacityZXWR RNC 2 Racks Capacity
ZXWR RNCZXWR RNC
Modularity design, ATM/IP gateway function, transmission and bandwidth convergency.
RAU can expand independently to provide access interface, easy for future evolution to IP UTRAN.
Iub Throughput : 6.6GbpsNo.1 in the Industry
Iub Throughput : 6.6GbpsNo.1 in the Industry
L4
L3
Control shelf
L2
Resource shelf
L1
rack1
Control shelf
Resource shelf
L4
L3
Control shelf
L2
Resource shelf
L1
rack1
control
shelf
Switch shelf
L4
L3
L2
Resource shelf
L1
rack2
ZXWR RNC Product Characteristic
High integration, large capacity, full configuration
of one million subscribers needs only two racks.
All-IP configuration, various interfaces
Support ATM/IP dual protocol stacks, provides
ATM UTRAN and IP UTRAN network configuration
Reduce the transport resource by ATM-IP gateway
function.
Easier evolution to all IP UTRAU by the rich interfaces
such as IP over E1, ATM over E1/STM-1, IMA
E1/channelized STM-1, POS, FE, GE etc.
ZXWR RNC support IP UTRANZXWR RNC support IP UTRAN
ZXWR RNC product characteristicZXWR RNC product characteristic
ZXWR RNC interface shelf
ZXWR RNC
MPB
CLKG
UIM
SPB
MNIC
APBE
IWFB
VTCD
MRB
TSNB
TFI
DTEC
PSN
GLI
ZXWN CN Board list
CHUB
SDT
ROM
CLKG
UIM
RCB
RGUB
APBE
IMAB
MRB
DTEC
PSN
GLI
ZXWN RNC Board list
CHUB
RUB
All RNC boards are same with CN!
Same hardware platform with CN
ZXWR RNC Rich Interfaces
ZXWR RNC has the interface boards such as APBE,GIPI,IMAB,SDTB&DTB etc.
ZXWR RNC supplies the rich interface type including E1,IMA E1,STM-1,CSTM-1,POS,FE,GE to realize the IP UTRAUN configuration.
STM-1(POS)/100E/1000M ETHER(ETHER/SDH/ATM)
STM-1(ATM)/E1(SDH/ATM)
CSTM-1/E1(SDH/LINK)
E1(LINK)
UIM
CHUB
GLI
PSN
APBE
ROMB
ICM
RCB
RUB
GIPI
DTB
RNC Switch Unit
SDTB
Iur/Iu/Iub
Iub
Iur/Iu/Iub
Iur/Iu/Iub
IMAB
RNC Access Unit RNC O&M Unit
RNC Processing Unit
Interface Processing 接口处理模块IPIP IP
UP Processing UP Processing GTP—U Processing
CP Processing Broadband Signaling
Distributed Module Processing
Distributed Module Processing
Different data is processed by different modules, enhanced hardware compatibility, each module can be upgraded and develop independently.
Easy capacity expansion: modules stack.
ZXWR RNC Easy Capacity Expansion
L4
L3
Control shelf
L2
Resource
shelf
L1
rack1
Control shelf
Resource
shelf
L4
L3
Control shelf
L2
Resource
shelf
L1
rack1
control
shelf
Switch shelf
L4
L3
L2
Resource shelf
L1
rack2
Resource shelf
L4
L3
Control shelf
L2
Resource shelf
L1
rack1
Control shelf
300 thousands
subscribers
650 thousands
subscribers
One million subscribers
ZXWR RNC’s RRM
Rich experience in CDMA
More than 60 related RRM
patents
Advanced power control
arithmetic
Well handover
control
Excellent Access control
arithmetic
Reasonable overload control
Advantage of RRM
Excellent RRM
The key module 1+1 backup, others
N+1 backup
Remote online monitor
Real time Alerting Function
MTBF<1h/20 years
Alerting data stored time > 3 month
Switch plane adopt double-
plane
User Plane adopt resource pool
Design Reliability
High reliability
Control shelf
Resource shelf
Switch shelf
WAN
O&Mclient
Remote O&MCenter
Friendly Machine interface
Remote O&M
On-line board testing
Software upgrade online
Flexible report form
customized
O&Mclient
O&Mclient
Easy to O&M
Easy to O&M
Content
External Interfaces of RNC
ZXWR RNC Functional Units
ZXWR RNC Subracks
ZXWR RNC Features
ZXWR RNC Configuration
ZXWR RNC Cable Connection
ZXWR RNC System Structure
Control Signal
Data Signal
1) CHUB, ROMB, CLKG only in main control shelf
2) SBCX only in main resource shelf
DTBGUIM
SBCX
RUB
APBE
CHUB
GIPISDTB
IMAB
GIPI
RCB
PSN
UIMC
GUIM
APBE
CLKG
ROMB
GLI
GLI
…
UIMC
Switch Shelf
Interface Shelf
MainControl Shelf
Main Resource Shelf
Control Shelf Configuration Principle
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Name Full Name Configuration Principle Backup Principle
ROMB RNC Operating & Maintenance Board Each RNC 1 pair 1+1
RCB RNC Control plane processing BoardDepends on BHCA of the control plane traffic model
1+1
CHUB Control plane HUB Each RNC 1 pair 1+1
CLKG Clock Generator Each RNC 1 pair 1+1
UIMC Universal Interface Module of Control plane Each control shelf 1 pair 1+1
CHUB, ROMB and CL
KG each config 1 pair f
or one RNC office (1+1
backup) in the main co
ntrol shelf. Other contr
ol shelves only have U
IMC and RCB boards.
Resource Shelf Configuration Principle
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Name Full Name Configuration Principle Backup Principle
RUB RNC User plane processing Board Depends on user plan traffic model N+1
GIPI Gigabit IP Interface Provides 1 GE or 4 FE interfaces Load sharing or 1+1
APBE ATM Process Board Enhanced Provides 4 ATM STM-1 interfaces Load sharing
SBCX X86 Single Board Computer Each RNC 1 pic no
Each RNC office has 2 GIPI
(1+1) for OMCB in slot 11/12
of main resource shelf.
Each RNC office has only 1
SBCX board in slot 1/2 of
main resource shelf.
Interface Shelf Configuration Principle
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(S)
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(S)
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(S)
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(S)
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(S)
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Name Full Name Configuration Principle Backup Principle
DTB Digital Trunk Board Provides 32 E1 Load sharing
SDTB Sonet Digital Trunk Board Provides 1 CSTM-1 Load sharing or 1+1
APBE ATM Process Board Enhanced Provides 4 ATM STM-1 Load sharing
IMAB IMA Board Processing 64 IMA E1, 1IMAB+2DTB, 1IMAB+1SDTB Load sharing
EIPI E1 IP Interface Processing 64 IPoE1, 1EIPI+2DTB, 1EIPI+1SDTB Load sharing
2 GUIM(1+1) for internal
switching.
Interface boards depend on
networking requirements.
Switch Shelf Configuration Principle
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Name Full Name Configuration Principle Backup Principle
PSN Packet Switching Network 1 pair in switch shelf 1+1
GLI GE Line InterfaceEach pair of GUIM(2 GE) corresponding to 1 GLI (4 GE) 1+1
UIMCUniversal Interface Module of Control plane
1 pair in switch shelf 1+1
Each GUIM has 2 GE, and
each GLI has 4 GE, so 1 GLI
can connect two resource
shelf or interface shelf.
(1acitve GLI – 2 active GUIM
1 standby GLI – 2 standby
GUIM)
RNC Configuration ParameterPrimary Secondary Optional
• Total Users
• Total amount of TRXs
• Total Node B
• Traffic load per user
• Traffic load of VT/user.
• Average data capacity per user in busy hour.
• Ratio of DL data vol.
• Iub transmission type
• Type of ATM Iub
• Number of ATM Iub
• Type of IP Iub
• Trans. type of Iu / Iur
• Iub Macro-diversity ratio
• System congestion ratio
• Key boards redundancy
• GPS clock support
• Language of document
• Environment monitor
• Alarming system
• SDTB backup
• Equivalent traffic of data in busy hour
• Average throughput of each TRX
• Common channel flow per TRX
• Average TRX/Node B
• GPS receiver support
• Average AAL2 PVC per Node B
• E1 cable type
Primary parameter: Parameter that must be provided by customer and filled.
Secondary parameter: Necessary for some project and not necessary for others.
Optional parameter: Maybe changed according to customer’s requirement
ZXWR RNC Minimum Configuration
Application Scenario : Telecom exhibition, test project, trial project. Iub support all E1, all FE and hybrid access. No board redundancy. SBCX is configured as log server.
Capacity supported by minimum configuration :
Max Fixed capacity Typical capacity
Node B / Cell
E1/STM-1
User( K )
Voice Traffic/user ( Erl )
Video traffic/user (Erl)
Data traffic/ user (bps)
BHCA/ user
30 / 90 30/4 40 0.03 0.003 1000 4.68
ZXWR RNC Minimum Configuration
Front Plane Back Plane
Content
External Interfaces of RNC
ZXWR RNC Functional Units
ZXWR RNC Subracks
ZXWR RNC Features
ZXWR RNC Configuration
ZXWR RNC Cable Connection
Cabinet Power Cable Installation
External Power Cable : External power cable connects the cabinet-top filter wi
th the external DC distribution cabinet.
Connection :S.N. Cable Qty
.End A End A
23 - 48 V Power Cable 2 Blue: Filter –48 V input
Blue: Local –48 V power distribution box output
24 - 48 V Power Cable 2 Black: Filter –48 VGND input
Black: Local –48 VGND DC power distribution box output
Cabinet Power Cable Installation
Power Cable for Power Distribution Plug-in Box : To facilitate the connection of the power cable and the
ground-ing cable, each ZXWR RNC rack is designed to bear one –48 V cable in-lead box on the top of the rack.
Connection : Users needn’t install cable of the power distribution bo
x. It’s pre-installed before delivery.
Cabinet Power Cable Installation
Power Cable for Fan Shelf/Fan Plug-in Box : The power cable of cabinet-top fan shelf conducts –48
V that the busbar outputs to the fan monitoring board.
Cabinet Power Cable Installation
Power Cable for Service Plug-in Box : The service plug-in box leads in -48 V with the 6-core
power socket. The cable falls into two parts: External line and internal line. The external line connects from the busbar to the plug-in box filter, while the internal line connects from plug-in box power filter to the backplane.
Cabinet Grounding Cable Installation
Grounding description : Grounding cable includes the grounding copper cable
of the shelf, the grounding cable of the cabinet door, and the protection ground tandem cable inside the cabinet.
S.N.
Cable Qty. End A End A
4 Grounding copper cable of the shelf
4 Plug-in box PE port Grounding copper busbar
Grounding cable of cabinet door
2 Cabinet grounding cable port
Cabinet door
Protection ground tandem cable inside the cabinet
1 Cabinet-top protection ground
Safety ground of the equipment room
Intra-cabinet Line Installation
Application Scenario : The intra-cabinet line falls into the internal cable and i
nternal fiber. Usually, internal lines are ready before delivery.
Cable Classification : Clock Cable Interconnection Cable on Control Plane Interconnection Fiber on User Plane PD485 Cable and Fan Monitoring Cable
Out-of-cabinet Line Installation
Application Scenario : Monitoring System Cable
Monitoring system cable include: Fan plug-in box monitoring cable, environment monitoring transfer cable, door control monitoring cable, infrared monitoring cable, temperature/humidity monitoring cable, and smoke monitoring cable.
Ethernet Cable Ethernet cable implements the external Ethernet connectio
n to Node B operation and maintenance center and ZXWR RNC operation and maintenance center.
External Fiber External fiber is used to connect CN and Node B.
E1/T1 Cable E1/T1 cable is used to implement the external connection fr
om the ZXWR RNC to the CN.
Inter-cabinet Cable Installation
Application Scenario : Inter-cabinet Cable Inter-cabinet Fiber
Exercise
Please write down the main function units of RNC. and write down the boards of each function units.
RNC subrack include ( ) ( ) ( ) and ( ). 1 GIPI board can provide ( ) stm-1 interfaces, 1 DT
B board provide ( ) E1 interfaces, 1 SDTB board provide ( ) CSTM-1 interface.