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 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

S

B

C

X

R

C

B

R

C

B

R

C

B

R

C

B

R

C

B

R

C

B

U

I

M

C

U

I

M

C

R

O

M

B

R

O

M

B

C

L

K

G

C

L

K

G

C

H

U

B

C

H

U

B

R

S

V

B

R

U

I

M

2

R

U

I

M

3

R

M

P

B

R

M

P

B

R

C

K

G

1

R

C

K

G

2

R

C

H

B

1

R

C

H

B

2

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

G

I

P

I

G

I

P

I

A

P

B

E

A

P

B

E

R

U

B

R

U

B

R

U

B

R

U

B

G

U

I

M

G

U

I

M

G

I

P

I

G

I

P

I

R

U

B

R

U

B

R

U

B

R

U

B

G

I

P

I

R

G

E

R

R

G

E

R

R

G

I

M

1

R

G

I

M

1

R

G

U

M

1

R

G

U

M

2

R

M

N

I

C

R

M

N

I

C

R

G

E

R

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)


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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

(S)

D

T

B

(S)

D

T

B

I

M

A

B

E

I

P

I

(S)

D

T

B

(S)

D

T

B

I

M

A

B

E

I

P

I

G

U

I

M

G

U

I

M

(S)

D

T

B

(S)

D

T

B

I

M

A

B

I

M

A

B

(S)

D

T

B

R

D

T

B

R

D

T

B

R

D

T

B

R

D

T

B

R

G

U

M

1

R

G

U

M

2

R

D

T

B

R

D

T

B

R

D

T

B

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.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

G

L

I

G

L

I

G

L

I

G

L

I

G

L

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G

L

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P

S

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P

S

N

U

I

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C

U

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C

R

U

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R

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RNC Dimensioning.xls

Contents


RNC Dimensioning Example

RUB= CEILING (5805/2100+388/200+92/200,1) = 6; After N+1 backup, RUB=8;


2100 165 Mbps (R99 64k) 265 Mbps (R99 384K)


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;

RNC Introduction (ZTE)

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