ZTE RNC Product Introduction

Internal Only▲

User Equipment

Radio Network System

Core Network

UMTS Network Architecture

UMTS System is consisting of Core Network (CN), UMTS Terrestrial Radio Access Network (UTRAN) and User Equipment (UE)

2

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ZXWR RNC Introduction

RNC Dimensioning

Summary

Internal Only▲

4

RNC System Structure

Composed by RAU, RSU, RPU, ROMU, and RPMU

Power、

Process Unit RPU

O&M UnitROMU

Peripheral Monitor UnitRPMU

RA

UA

ccess Unit

RS

US

witch U

nit

RNC

Node B

RNC

CN

STM -1E1

FE/ GE485

GPS

Iub

Iur

Iu

Fan

Internal Only▲

5

RNC Shelf Structure

Control shelf

Resource shelf

Switch shelf

Uses BCTC as Backboard, takes charge of processing RNC control plane (RCB), and also includes ROMB, CLKG,THUB, SBCX.

Uses BGSN as Backboard, takes charge of processing RNC user plane (RUB) , and supplies kinds of interfaces, such as E1,STM-1, channelized STM-1, GE/FE, and so on. If there are more than two resource shelves, switch shelf is needed to switch data.

Uses BPSN as Backboard, takes charge of system switch , supplies switch unit for user plane.

Internal Only▲

Control Shelf1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

SBCX

SBCX

SBCX

RCB

RCB

UIMC

UIMC

ROMB

ROMB

CLKG

CLKG

THUB

THUB

Board ID Full Name Configuration Principle Functionality Description Backup

ROMB RNC Operating & Maintenance Board 1 pair per RNC Providing function of OMC agent and

overall system management 1+1

RCB RNC Control plane processing Board

Based on the traffic model, mainly decided by the control plane parameters like BHCA

Dealing with the control plane protocols 1+1

THUB Trunk HUB 1 pair per RNCProvide the signaling switch channel between resource shelf and control shelf.

1+1

CLKG Clock Generator 1 pair per RNCProvide system clock and external

synchronization 1+1

UIMC Universal Interface Module of Control plane 1 pair per control shelf Switch center in the control shelf. 1+1

SBCX X86 Single Board Computer 3 per RNC Provide OMM function and log server 1+1

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

RCB

RCB

RCB

RCB

RCB

RCB

RCB

RCB

UIMC

UIMC

RCB

RCB

RCB

RCB

RCB

RCB

Main control shelf boards layout:( Global boards include SBCX, ROMB,

CLKG, THUB are configured in the main control shelf)

Normal control shelf boards layout:

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Internal Only▲

Resource Shelf - 1

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

SDTA2

SDTA2

APBE

APBE

GIPI4

GIPI4

RUB

RUB

GUIM

GUI

M

RUB

RUB

RUB

RUB

RUB

RUB

GIPI4

Board ID Full Name Configuration Principle Functionality Description Backup

RUB RNC User plane processing Board

Depends on user plane traffic model. User plane protocol processing. Load Sharing

GUIM GE Universal Interface Module

1 pair per resource shelf

Used for resource shelf interface shelf internal switching. 1+1

SDTA2Sonet Digital Trunk Board with ATM, 2nd Generation

Provide 4 CSTM-1Provide channelized STM-1 interface and IMA protocol processing ;

Load Sharing or 1+1

APBE ATM Process Board Enhanced

Provide 4 STM-1 interfaces ATM over STM-1 processing. Load Sharing

or 1+1

GIPI4 Gigabit IP Interface, 4rd Generation

Provide 2 * GE or 4 *FE Provide GE/FE interface. Load Sharing

or 1+1

Resource shelf boards layout:

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Internal Only▲

8

Resource Shelf - 2

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

SDTA2

SDTA2

SDT

A2

SDTA2

DTA

DTA

DTA

DTA

GUI

M

GUIM

SDTI

SDTI

SDTI

SDTI

SDTI

DTI

DTI

Board ID Full Name Configuration Principle Functionality Description Backup

DTA Digital Trunk Board with ATM

Provide 32 E1 interfaces.

Provide E1 interfaces and MLPPP protocol processing.

Load Sharing or 1+1

DTI Digital Trunk Board with IP Provide 32 E1 interfaces.

Provide E1 interfaces and IMA protocol processing.

Load Sharing or 1+1

SDTI Sonet Digital Trunk Board with IP

Provide 2 CSTM-1 interfaces

Provide channelized STM-1 interface and MLPPP protocol processing

Load Sharing or 1+1

GUIM GE Universal Interface Module

1 pair per resource shelf

Used for resource shelf interface shelf internal switching.

Load Sharing or 1+1

It can provide all kinds

of interface for Iub

interface.

Internal Only▲

Switch Shelf

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

GLI

GLI

GLI

GLI

GLI

GLI

PSN

PSN

GLI

GLI

UI

MC

UIMC

Board ID Full Name Configuration

PrincipleFunctionality Description Backup

PSN Packet Switching Network

1 pair per resource shelf

Provides packet switching among GLIs

1+1

GLI GE Line Interface Every 2 pairs GUIM with 1 pair GLI

process IP packet and manage traffic volume from resource shelves, then converge to PSN.

1+1

UIMCUniversal Interface Module of Control plane

1 pair per resource shelf

Provides signaling switching in switch shelf

1+1

GUIM board connects

to GLI board via 2 GE

interface

Internal Only▲

10

RNC System Architecture

DTA

SBCX

POSI

SDTA2

THUB

RUB

GIPI4

SDTI

RCB

PSN

UIMC

GUIM

APBE

CLKG

ROMB

GLI

GLI

…

Switch Shelf

Control Shelf

Resource Shelf

Signaling FlowData Flow

1960NodeB/5880Cell 76800Erl/9600Mbps All IP hardware platform

UIMCDTI

Other Resource Shelf

Internal Only▲

11

RNC Large Capacity

Traffic Vol. 76,800ErlTraffic Vol. 76,800Erl

BHCA 7,000kBHCA 7,000k

Iub Throughput 9.6GbpsIub Throughput 9.6Gbps

Max. Node B 1,960Max. Node B 1,960

Max. Cell 5,880Max. Cell 5,880

ZTE RNC CapacityZTE RNC Capacity

Iub Throughput ： 9.6Gbps 19 inch standard rack One rack includes four layer

shelves, and one shelf includes seventeen slots

ZTE RNC

Internal Only▲

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ZTE Large Capacity IP RNC － less space requirement

IP IP Switch ArchitectureSwitch Architecture

All-All-IP IP NetworkingNetworkingSmooth EvolutionSmooth Evolution

High IntegrityHigh Integrity

High ReliabilityHigh Reliability

Max. Erl Max. BHCA Max. Iub Throughput Max. Cells

ZTE76800

ZTE7000K

Others26000

Others2300K

Others3300Mbps

ZTE9.6Gbps

Others5100

ZTE5880

Most Mature All-IP RNC in the industry： All-IP RNC: IP platform, IP switch, IP interface

Commercial Application for more than 5 years

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ZXWR RNC Introduction

RNC Dimensioning

Summary

Internal Only▲

Processing Unit-1

There are two boards for processing unit: RCB is used for processing

control plane data and RUB is for user plane data.

One processing unit includes two RCB boards and two RUB boards. They

are dimensioned based on following factors:

1). Cell number

2). Node B number

3). Erl for CS traffic and data throughput of PS traffic

One processing unit can provide at most 140 Node B, 420 cell, 4800Erl for CS

traffic or 600 Mbps for PS traffic.

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Internal Only▲

Processing Unit-2

There are three main limitation factors for the processing unit dimension. For

the configuration, the maximum level must be chosen from the three factors

below: 1). Unit Level = (Node B Number) / 140 2). Unit Level = (Cell Number) / 420 3). Unit Level = (CS Traffic Erl) / 4800 + (PS Traffic Mbps) / 600 Because of processing level design, the RNC expansion is based on the

processing unit. The RNC expansion process is just as the picture:

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Internal Only▲

Processing Unit-3

According to the processing unit, the RNC processing ability can be divided into

14 levels. The processing capacity of the unit and the unit expansion are listed in

the below table:

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Capacity Level

Configuration Processing Ability

RCB RUB Node B Cell CS (Erl) PS Traffic (Mbps)

Level 1 2 2 140 420 4800 600

Level 2 4 4 280 840 9600 1200

Level 3 6 6 420 1260 14400 1800

……… ………… ……………………………………

Level 13 26 26 1820 5460 62400 7800

Level 14 28 28 1960 5880 67200 8400

advance Level 1

30 72000 9000

advance Level 2

32 76800 9600

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Internal Only▲

Processing Unit-4

RCB is not only responsible for the control plane processing, but also for the signaling

link processing. The RNC Signaling Board configuration principle is as below:

When it is under processing level 5, only one pair of RCB is required.

When it is between processing level 6 and level 10, two pairs of RCB are required.

When it is between processing level 11 and level 14, three pairs of RCB are required.

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Internal Only▲

Transmission UnitInterface Board number

=MAX （ Bandwidth/ throughput per Interface Board ,

port number/ port number per Interface Board ,

node b number/ node b number per Interface Board ）

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Transmission Protocol Stack

InterfaceInterface

BoardLimitation Factor

ATM

E1/T1 DTA 32 E1/T1

CSTM-1 SDTA2 4 CSTM-1

STM-1 APBE 4 STM-1 / 310Mbps

IP

E1/T1 DTI 32 E1/T1

CSTM-1 SDTI 2 CSTM-1

STM-1 POSI 4 STM-1 / 310Mbps

GE/FE GIPI4 2 GE / 1500Mbps or 4FE

The limitation factor for transmission interface board is listed in the following table:

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Internal Only▲

Other Boards

There are some other boards to provide the system main control, inner data switch, system

operation and maintenance and so on. The configuration principle for auxiliary board is based on

the below table:

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　 Board Name Dimension Principle

ROMB 1 pair per RNC.

SBCX 3 per RNC

CLKG 1 pair per RNC.

THUB 1 pair per RNC.

UIMC 1 pair per Control Shelf

GUIM 1 pair per Resource Shelf

GIPI4 1 pair for OMCB

19

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Overview

Large Capacity RNC Introduction

Summary

Internal Only▲

21

RNC Flexible Capacity Expansion1 rack 2 shelves conf

1 rack full conf2 racks maximum conf

L4

L3

Control shelf

L2

Resource shelf

L1

Cabinet1

Control shelf

Resource shelf

L4

L3

Control shelf

L2

Resource shelf

L1

Cabinet1

Control shelf

Switch shelf

L4

L3

L2

Resource shelf

L1

Cabinet2

Resource shelf

L4

L3

Control shelf

L2

Resource shelf

L1

Cabinet1

Control shelf

300k Users 650k Users 1 million Users

Internal Only▲

Key module1+1 backup ， other module N+1 backup

remote online monitor

Real time alarming report

MTBF<1h/20 year

alarming data storage > 3 months

Dual-plane design for Switch plane

Resource pool design for user plane

High Reliability and Backup mechanism

Port level backup

Port 1+1 backup

Port N+1backup

Port load sharing

Board level backup

Board 1+1 backup

Board N+1 backup

Board load sharing

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Internal Only▲

Full IP RAN Solution

According to the transmission resource and cost, select TDM/ATM/IP in the initial phase of network construction for there is less traffic.

With the traffic and new services increase gradually, IP is introduced, and finally evolve to All-IP network.

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IP/MSTPTransmission

RNC01FE

Iub IPIub IP Iur IPIur IP Iu IPIu IP

Iub Hybrid IPIub Hybrid IP

RNC02

PDH/SDH Backbone

Clock over GPS/IP

FE

E1/T1/STM-1

E1/T1/STM-1

E1/T1/STM-1

FE/GE

FE/GE

MGW

SGSN

IP/MSTPBackbone

FE/GE

FE/GE FE/GE

FE/GE

Evolve to IP UTRAN step by stepEvolve to IP UTRAN step by step

Internal Only▲

Abundant interface, flexible transmission

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Supports ATM, IP transmission, provides diversified interface, providing low cost and smoothly all IP

evolution.

ATM interface

IMA E1,STM-1,CSTM-1； IP interface

E1,POS , FE,GE

ATM over E1 over STM-1

RRNNCC

RRNNCC

n E1

ATM over E1

E1 SDH HUB NodeB

E1E1

E1

Transmission Network155M/622M

ATM over STM-1

155M

E1E1E1

IP over E1

IP over FE/GE

nE1

nE1,ML-PPP or PoS STM-1

TDM

Internal Only▲

26

ZTE Synchronization Implementation

RNC

NodeB

Access Aggregation

Receiver

PSN

Time tree

BITS

PSN

PSN

External Clock: 2M bits & 2M Hz

Sync Ethernet

Use PHY clock from bit stream (similar to SDH/PDH)

Independent from network loadOnly deliver frequency but not phase

Excellent SDH/PDH replacement solution

IEEE 1588V2

Clock is transmitted via dedicated timing packetsCan deliver frequency and phase (FDD/TDD)Works over any transport technology

Deliver frequency and time

Not always viable and not secure

Expensive oscillator required

GPS Receiver

Expensive oscillator required