RNC Introduction (ZTE)
description
Transcript of RNC Introduction (ZTE)
RNC Introduction and Configuration
Contents
• ZXWR RNC Introduction• ZXWR RNC Dimensioning Principle• ZXWR RNC Dimensioning Example
RNC Overview
RNC
To CNATM/IP
Iub
Iu
Iur To RNC
RNC in UTRAN
Power & Fan
Process Unit
RPU
O&M UnitROMU
Peripheral Monitor UnitRPMU
RA
UA
ccess U
nit
RS
US
witch
Un
it
ZXWR RNC
Node B
RNC
CN
STM-1
E1
FE/GE
485
GPS
Iub
Iur
Iu
RNC Hardware Logical Units
ZXWR RNC Hardware Architecture
ROMU (RNC O&M unit)
ROMB, CLKG, SBCX
RAU (RNC Access Unit)
APBE, EIPI, GIPI,SDTB, DTB,IMAB
RSU (RNC Switch Unit)
PSN, GLI, UIMC, GUIM and CHUB
RPU (RNC Processing Unit)
RCB, RUB
RPMU( Peripheral Monitor Unit)
PWRD: Power Distributor
ALB: Alarm Board
ZXWR RNC Features ZTE Large Capacity All-IP RNC
Modularity design, four types of shelves Control shelf Resource shelf Switch shelf Interface shelf
Rich interface: E1T1/FE/GE/STM-1/CSTM-1
ZXWR RNC 2 Racks Capacity
Subscribers 1 Million
Traffic Vol. 52,500Erl
BHCA 7,000K
Switch Capacity 80Gbps
Data Throughput 6,600 Mbps
Max. Node B 1,900
Max. Cell 5,700
Interface shelf can expand independently to provide access interface, easy for future evolution to IP UTRAN.
Contents
• ZXWR RNC Introduction• ZXWR RNC Dimensioning Principle• ZXWR RNC Dimensioning Example
ZXWR RNC System Structure
Control Signal
Data Signal
DTB GUI
M
RUB
APBE
CHUB
EIPISDTBIMAB
GIPI
RCB
PSNU
IMC
GUI
M
APBE
CLKG
ROMB
GLI
GLI
…
UIMCSwitch Shelf
Interface Shelf
MainControl Shelf
Main Resource Shelf
CHUB, ROMB, CLKG only for main control shelf
SBCX only in main resource shelf
Control shelf
Resource shelf
Switch shelf
Interface shelf
BCTC as Backboard Process RNC control plane (RCB) ROMB,CLKG,CHUB,SBCX
BGSN as Backboard Process RNC user plane (RUB) GIPI, APBE
BPSN as Backboard Supply switch unit for user plane PSN, GLI
BGSN as Backboard DTB, SDTB, IMAB, EIPI,
APBE
SBCX
Control Shelf Configuration1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
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Name Full Name Configuration PrincipleBackup
Principle
ROMB RNC Operating & Maintenance Board Each RNC 1 pair 1+1
RCB RNC Control plane processing Board BHCA & Cell & Sig Bandwidth 1+1
CHUB Control plane HUB Each RNC 1 pair 1+1
CLKG Clock Generator Each RNC 1 pair 1+1
SBCX X86 Single Board Computer Each RNC 3 pcs
OMM: 2; Log Server: 11+1 for OMM
UIMC Universal Interface Module of Control plane Each control shelf 1 pair 1+1
CHUB, ROMB and CLKG
1 pair (1+1backup) for
one RNC in the main
control shelf.
Other control shelves
only have UIMC, RCB or
SBCX boards.
Board Dimensioning: RCB in Control Shelf
RCB ItemsProcessing
capacityFormula
Number of Cells 410 RCB_1=Number of Cells / 410
No. of BHCA 500K RCB_2 =No of BHCA / 500k
Throughput of Signaling 14MbpsRCB_IpSig=Throughput of Signaling / 14Mbps
RCB and SBCX dimensioning principle
Detailed dimensioning principle with detailed traffic model: RCB=2*MAX(RCB_1, RCB_2) + 2* RCB_IpSig
Simple dimensioning principle without detailed traffic model: RCB = RUB + RCB_IpSig RCB_IpSig =
2, if (RUB)<=4;
4, else (RUB)<=10;
6, else (RUB)>10;
Notes: RUB is user plane processing boards, of which dimensioning will be introduced in following slide.
SBCX: 1 SBCX configured as log server, which will be put in main control shelf 2 SBCX configured as OMM server(1+1 backup), which can be put in cont
rol or switch shelf.
Resource Shelf Configuration
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Each RNC has 2 GIPI (1+1) for OMCB in slot 11/12 of main resource shelf.
2 GUIM (1+1 backup)
for internal switching.
Providing interface
boards for IU interface.
Name Full Name Configuration PrincipleBackup
Principle
RUBRNC User plane processing Board
Depends on user plan traffic model (CE) N+1
GIPIGigabit IP Interface
1GE or 4FE, Throughput of each InterfaceLoad sharing or 1+1
APBEATM Process
Board Enhanced4 ATM STM-1, Throughput of each Interface & ATM STM-1
Load sharing
or 1+1
GUIMUniversal Interface
Module of User plane Each Resource shelf 1 Pair 1+1
Board Dimensioning: RUB in Resource Shelf
Voice DataRUB number = ----------- + ----------
2100 165 Mbps (R99 64k) 265 Mbps (R99 384K)
Voice DataRUB number = ----------- + ----------
2100 165 Mbps (R99 64k) 265 Mbps (R99 384K)
Voice processing capacity is 2100.
For different data server, the data throughput capacity is different.
GIPI & APBE Dimensioning
Interfaces Throughput Calculation
Iub BIub = BIubData + BlubSig
Iu
Iu-CS BIuCS = BIuCSData + BIuCSSig
Iu-PS BIuPS = BIuPSData + BIuPSSig
IurBIur= BIurData + BIurSig
BIurData = (BIuCSData + BIuPSData) * RIur
GIPI=IP interface throughput / 1Gbps
APBE=MAX (ATM interface throughput / 140Mbps, STM-1 Interface / 4)
Interface Shelf Configuration
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2 GUIM (1+1 backup)
for internal switching.
Providing interface
boards for IUB
Interface boards
depend on networking
requirements.
Name Full Name Configuration Principle Backup Principle
DTB Digital Trunk Board 32E1, DTB = N_E1/32 Load sharing
SDTB SONET Digital Trunk Board 63E1, SDTB=N_E1/63 Load sharing/1+1
APBE ATM Process Board Enhanced4 ATM STM-1, Throughput of each
Interface & ATM STM-1Load sharing/1+1
IMAB/
EIPIIMA & EIPI Board
1IMAB/EIPI + 2DTB,
1IMAB/EIPI + 1SDTBLoad sharing/1+1
Interface boards dimensioning principle
ATM over E1 : DTB + IMAB ATM over CSMT-1 : SDTB + IMAB IP over E1 : DTB + EIPI IP over CSTM-1: SDTB + EIPI ATM over STM-1: APBE FE/GE: GIPI
IMAB dimensioning principle: 2 DTB need 1 IMAB; 1 SDTB need 1 IMAB;
EIPI dimensioning principle: 2 DTB need 1 EIPI; 1 SDTB need 1 EIPI;
Switch Shelf Configuration
Name Full Name Configuration Principle Backup Principle
PSN Packet Switching Network 1 pair for switch shelf 1+1
GLI GE Line Interface 2 pairs GUIM need 1 pair GLI 1+1
UIMCUniversal Interface Module of
Control plane1 pair for switch shelf 1+1
Each GUIM has 2 GE,
each GLI has 4 GE.
1 GLI can connect two
resource shelf or
interface shelf.
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RNC Dimensioning.xls
Contents
• ZXWR RNC Introduction• ZXWR RNC Dimensioning Principle• ZXWR RNC Dimensioning Example
RNC Dimensioning Example
RUB= CEILING (5805/2100+388/200+92/200,1) = 6; After N+1 backup, RUB=8;
Voice DataRUB number = ----------- + ----------
2100 165 Mbps (R99 64k) 265 Mbps (R99 384K)
Voice DataRUB number = ----------- + ----------
2100 165 Mbps (R99 64k) 265 Mbps (R99 384K)
RCB = RUB + RCB_IpSigRCB_IpSig = 2, if (RUB)<=4; 4, else (RUB)<=10; 6, else (RUB)>10;
RCB = RUB+RCB_Ip Sig = 8+4 = 12;
RCB Dimensioning Checking:
Cell Processing Capacity=4*420=1680NodeB Processing Capacity=4*140=560
RNC Dimensioning Result
After 1+1 backup,
SDTB dimensioning result is 9+9;
APBE dimensioning result is 2+2;
GIPI dimensioning result is 2+2;
IUB planning :
GLI Dimensioning result:
Resource shelf + Interface shelf=5
GLI=6;