RTN950 Product Description

8/20/2019 RTN950 Product Description

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OptiX RTN 950 Radio Transmission System V100R002C00

Product Description

Issue 02

Date 2009-12-20

HUAWEI TECHNOLOGIES CO., LTD.


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Issue 02 (2009-12-20)Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.i

Copyright © Huawei Technologies Co., Ltd. 2009-2009. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior

written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

The purchased products, services and features are stipulated by the commercial contract made between

Huawei and the customer. All or partial products, services and features described in this document may not

be within the purchased scope or the usage scope. Unless otherwise agreed by the contract, all

statements, information, and recommendations in this document are provided “ AS IS” without warranties,guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

http://www.huawei.com/mailto:[email protected]:[email protected]://www.huawei.com/


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OptiX RTN 950 Radio Transmission System

Product Description About This Document

Issue 02 (2009-12-20) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

iii

About This Document

Purpose

This document describes the network application, functions and features, structure,networking, network management system (NMS), and performance indexes of the OptiX

RTN 950 radio transmission system, thus providing comprehensive information about the

OptiX RTN 950 product for readers.

Related Versions

The following table lists the product versions related to this document.

Product Name Version

OptiX RTN 950 V100R002C00

iManager U2000 V100R001C00

Intended Audience

This document is intended for network planning engineers.

Before you read this document, ensure that you have acquired the basic knowledge of digital

microwave communication.

Organization

This document is organized as follows.

Chapter Content

1 Introduction Describes the network application and components of theOptiX RTN 950.

2 Functions and Features Describes the functions and features of the OptiX RTN 950.


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Product Description About This Document



v

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.

Italic Book titles are in italics.

Cour i er New Examples of information displayed on the screen are in

Cour i er New.

Update History

Updates between document issues are cumulative. Thus, the latest document issue contains allupdates made in previous issues.

Updates in Issue 02 (2009-12-20) Based on Product Version V100R002C00

This document is the second release for the V100R002C00 version.

The updated contents are as follows:

Update Description

6 Performance The specifications of the product are

updated.

Updates in Issue 01 (2009-06-30) Based on Product Version V100R002C00

This document is the first release of the V100R002C00 version.


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Product Description Contents



vii

Contents

About This Document................................................................................................................... iii

1 Introduction.................................................................................................................................1-1

1.1 Network Application ..................................................................................................................................... 1-1

1.2 Radio Link Forms ......................................................................................................................................... 1-3

1.3 Components................................................................................................................................................... 1-3

2 Functions and Features .............................................................................................................2-1

2.1 Microwave Types .......................................................................................................................................... 2-1

2.1.1 PDH Microwave .................................................................................................................................. 2-1

2.1.2 SDH Microwave .................................................................................................................................. 2-2

2.1.3 Hybrid Microwave............................................................................................................................... 2-2

2.2 Modulation Strategy...................................................................................................................................... 2-3

2.2.1 Fixed Modulation................................................................................................................................. 2-3

2.2.2 Adaptive Modulation ........................................................................................................................... 2-3

2.3 RF Configuration Modes............................................................................................................................... 2-4

2.4 Capacity ........................................................................................................................................................ 2-5

2.4.1 Air Interface Capacity.......................................................................................................................... 2-5

2.4.2 Cross-Connect Capacity....................................................................................................................... 2-6

2.4.3 Switching Capacity .............................................................................................................................. 2-6

2.5 Interfaces....................................................................................................................................................... 2-6

2.5.1 Microwave Interfaces........................................................................................................................... 2-6

2.5.2 Service Interfaces................................................................................................................................. 2-6

2.5.3 Management and Auxiliary Interfaces ................................................................................................. 2-7

2.6 Cross-Polarization Interference Cancellation................................................................................................ 2-8

2.7 Automatic Transmit Power Control............................................................................................................... 2-9

2.8 Ethernet Service Processing Capability......................................................................................................... 2-9

2.9 QoS.............................................................................................................................................................. 2-10

2.10 Clock Features........................................................................................................................................... 2-10

2.11 Protection Capability................................................................................................................................. 2-11

2.12 Network Management............................................................................................................................... 2-12

2.13 Easy Installation........................................................................................................................................ 2-13

2.14 Easy Maintenance ..................................................................................................................................... 2-13

3 Product Structure........................................................................................................................3-1


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3.1 System Architecture ...................................................................................................................................... 3-1

3.1.1 SDH/PDH Microwave ......................................................................................................................... 3-1

3.1.2 Hybrid Microwave............................................................................................................................... 3-2

3.2 Hardware Structure ....................................................................................................................................... 3-4

3.2.1 IDU ...................................................................................................................................................... 3-4

3.2.2 ODU..................................................................................................................................................... 3-6

3.3 Software Structure......................................................................................................................................... 3-8

3.3.1 NMS Software ..................................................................................................................................... 3-8

3.3.2 IDU Software....................................................................................................................................... 3-8

3.3.3 ODU Software ..................................................................................................................................... 3-8

3.4 Service Signal Processing Flow.................................................................................................................... 3-8

3.4.1 SDH/PDH Microwave ......................................................................................................................... 3-9

3.4.2 Hybrid Microwave............................................................................................................................. 3-10

4 Networking .................................................................................................................................4-1

4.1 SDH/PDH Microwave................................................................................................................................... 4-1

4.1.1 Chain Networking................................................................................................................................ 4-1

4.1.2 Ring Networking.................................................................................................................................. 4-2

4.2 Hybrid Microwave ........................................................................................................................................ 4-3

4.2.1 Chain Networking................................................................................................................................ 4-3

4.2.2 Ring Networking.................................................................................................................................. 4-4

5 Network Management System................................................................................................5-1

5.1 Network Management Solution..................................................................................................................... 5-1

5.2 LCT............................................................................................................................................................... 5-1

5.3 U2000............................................................................................................................................................ 5-3

6 Performance ................................................................................................................................6-1

6.1 RF Performance ............................................................................................................................................ 6-1

6.1.1 Microwave Work Modes...................................................................................................................... 6-1

6.1.2 Receiver Sensitivity ............................................................................................................................. 6-3

6.1.3 Distortion Sensitivity ........................................................................................................................... 6-7

6.1.4 ODU Performance ............................................................................................................................... 6-8

6.1.5 IF Performance..................................................................................................................................... 6-8 6.1.6 Baseband Signal Processing Performance of the Modem.................................................................... 6-9

6.2 Interface Performance ................................................................................................................................... 6-9

6.2.1 SDH Optical Interface Performance .................................................................................................... 6-9

6.2.2 E1 Interface Performance................................................................................................................... 6-10

6.2.3 Ethernet Interface Performance.......................................................................................................... 6-10

6.2.4 Auxiliary Interface Performance........................................................................................................ 6-12

6.3 Clock Timing and Synchronization Performance........................................................................................ 6-13

6.4 Integrated System Performance................................................................................................................... 6-14

A Glossary .................................................................................................................................... A-1


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B Acronyms and Abbreviations ................................................................................................B-1


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Product Description 1 Introduction



1-1

1 IntroductionThe OptiX RTN 950 is one of the series products of the OptiX RTN 900 radio transmission

system.

1.1 Network Application

The OptiX RTN 900 is a new generation split microwave transmission system developed by

Huawei. It can provide a seamless microwave transmission solution for a mobile

communication network or private network.

The OptiX RTN 900 products are available in two types: OptiX RTN 910 and OptiX RTN 950.The IDU of the OptiX RTN 910 is 1U high and supports one or two IF boards. The IDU of the

OptiX RTN 950 is 2U high and supports one to six IF boards. The users can choose an

appropriate type based on the actual requirements.

The OptiX RTN 950 provides several types of service interfaces and facilitates installation

and flexible configuration. It can provide a solution that is integrated with the TDMmicrowave, Hybrid microwave, and Packet microwave based on the network requirements. It

supports the smooth upgrade from the TDM microwave to the Hybrid microwave, and fromthe Hybrid microwave to the Packet microwave. The solution can evolve based on the servicechanges that occur due to radio mobile network evolution. Thus, this solution can meet the

transmission requirements of not only 2G and 3G networks, but also future LTE and 4G

networks.

Figure 1-1 and Figure 1-2 show the TDM microwave transmission solution and the Hybridmicrowave transmission solution respectively that are provided by the OptiX RTN 950 for the

mobile communication network.


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1 Introduction


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Figure 1-1 TDM microwave transmission solution provided by the OptiX RTN 950

OptiX RTN 950 BTS BSC

E1

E1

E1

STM-1/E1 E1Regional Backhaul

Network

E1 E1

E1

E1

E1

E1

Figure 1-2 Hybrid microwave transmission solution provided by the OptiX RTN 950

Regional backhaulnetwork

OptiX RTN 950 BTSNodeB BSCRNC

FE

E1

FEE1

E1

E1FE

FE/GE

E1

GE

E1

E1

STM-1/

E1

FE


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1-3

In the solutions, the local backhaul network is optional. The OptiX RTN 950 can be connected to the

RNC or the BSC directly.

1.2 Radio Link Forms

The OptiX RTN 950 provides the radio links of different forms by flexibly configuring

different IF boards and ODUs to meet the requirements of different microwave applicationscenarios.

Table 1-1 Radio link forms of the OptiX RTN 950

Radio Link Form Type of theSystem Control,Cross-Connect,

and Timing Board

Type of the IFBoard

Type of the ODU

SDH/PDH radio link CST/CSH IF1 Standard power

ODU or high powerODU

Hybrid radio link CSH IFU2 Standard powerODU or high power

ODU

Hybrid radio link

that supports theXPIC

CSH IFX2 Standard power

ODU or high powerODU

1.3 Components

The OptiX RTN 950 adopts a split structure. The system consists of the IDU950, the ODU,

and the antenna system. An ODU is connected to an IDU through an IF cable.

IDU 950

The IDU 950 is the indoor unit of an OptiX RTN 950 system. It accesses services, performsmultiplexing/demultiplexing and IF processing of the services, and provides system controland communication function.

Table 1-2 lists the basic features of the IDU 950.

Table 1-2 Introduction of the IDU 950

Item Performance

Chassis height 2U

Pluggable Supported


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1 Introduction


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Item Performance

Number of microwave

directions

1-6

RF configuration mode 1+0 non-protection configuration

N+0 non-protection configuration (N ≤ 5)

1+1 protection configuration

N+1 protection configuration (N ≤ 4)

XPIC configuration

Figure 1-3 IDU 950

ODU

The ODU is the outdoor unit of the OptiX RTN 900. It performs frequency conversion and

amplification of signals.

The OptiX RTN 900 series products share one set of RTN 600 ODUs, covering 6 GHz to 38GHz entire frequency band. The OptiX RTN 950 supports standard power ODU and high

power ODU.

The OptiX RTN 950 provides an entire frequency band antenna solution, and supports the

single-polarized antenna and dual-polarized antenna with a diameter of 0.3 m to 3.7 m and thecorresponding feeder system.

There are two methods of mounting the ODU and the antenna: direct mounting and separate

mounting.

The direct mounting method is normally adopted when a small-diameter andsingle-polarized antenna is used. In this situation, if one ODU is configured for one

antenna, the ODU is directly mounted at the back of the antenna. If two ODUs are

configured for one antenna, an RF signal combiner/splitter (hereinafter referred to as a


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1-5

hybrid coupler) must be mounted to connect the ODUs to the antenna. Figure 1-4 showsthe direct mounting method.

Figure 1-4 Direct mounting

The separate mounting method is adopted when a double-polarized antenna or big-diameter and single-polarized antenna is used. Figure 1-5 shows the separate method.

In this situation, a hybrid coupler can be mounted. That is, two ODUs share one feed boom.

Figure 1-5 Separate mounting


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Product Description 2 Functions and Features



2-1

2 Functions and FeaturesThe OptiX RTN 950 provides plentiful functions and features to ensure the quality and

efficiency of service transmission.

2.1 Microwave Types

Different radio link forms of OptiX RTN 950 support different types of microwaves. The

radio link form of the SDH/PDH microwave supports the PDH microwave and the SDH

microwave.

2.1.1 PDH Microwave

The PDH microwave refers to the microwave that transmits only the PDH services (mainly,

the E1 services).

Unlike the conventional PDH microwave equipment, the OptiX RTN 950 has a built-inMADM. The MADM grooms the E1 services to the microwave port for further transmission.

Thus, the services can be groomed flexibly and seamless convergence between the optical

network and the microwave network is achieved.

Figure 2-1 PDH microwave

ODU

E1

IDU

OH MADM

PDH radioSDH

……


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2.1.2 SDH Microwave

The SDH microwave refers to the microwave that transmits SDH services.

Unlike the conventional SDH microwave equipment, the OptiX RTN 950 has a built-in

MADM. The MADM grooms services to the microwave port through cross-connections,maps the services into the STM-1-based microwave frames, and then transmits the

STM-1-based microwave frames. Thus, the services can be groomed flexibly and seamlessconvergence between the optical network and the microwave network is achieved.

Figure 2-2 SDH microwave

ODU

E1

IDU

MADM

SDH radioSDH

OH

……

OH

……

2.1.3 Hybrid Microwave

The Hybrid microwave refers to the microwave that transmits native E1 services and nativeEthernet services in hybrid mode. The Hybrid microwave supports the AM function.

The OptiX RTN 950 has a built-in MADM and a packet processing platform. The MADM

transmits E1 services that are accessed locally or extracted from the SDH to the microwave port. After processing the accessed Ethernet services in the unified manner, the packet

processing platform transmits the Ethernet services to the microwave port. The microwave

port maps the E1 services and the Ethernet services into Hybrid microwave frames and thentransmits the Hybrid microwave frames.

Figure 2-3 Hybrid microwave

ODU

Ethernet

E1IDU

TDM

cross-connectmatrix

Packetswitching

Hybrid radio

Native E1 and native Ethernet

The characteristics of Hybrid microwave frames are as follows:


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2-3

The frames with a fixed period are used for transmission.

In the specific modulation mode or channel spacing, the length of Hybrid microwaveframes remains unchanged.

The E1 services in Hybrid microwave frames occupy a fixed bandwidth (when N E1

services are transmitted, the bandwidth of N E1 services is occupied). In Hybrid microwave frames, the Ethernet services occupy the remaining bandwidth of

the E1 services.

2.2 Modulation Strategy

The SDH/PDH microwave supports fixed modulation, whereas the Hybrid microwavesupports fixed modulation and adaptive modulation.

2.2.1 Fixed Modulation

Fixed modulation refers to a modulation strategy wherein a modulation mode is adopted

invariably on a running radio link.

When the OptiX RTN 950 uses the fixed modulation strategy, you can set the modulation

mode through the software.

2.2.2 Adaptive Modulation

Adaptive modulation (AM) is a technology wherein the modulation mode can be adjustedautomatically based on channel quality.

In the case of the same channel spacing, the microwave service bandwidth varies with the

modulation mode. The higher the modulation efficiency, the higher the bandwidth of thetransmitted services is. When the channel quality is favorable (such as on days when the

weather is favorable), the equipment adopts a higher modulation mode to transmit more userservices. In this manner, the transmission efficiency and the spectrum utilization of the system

are improved. When the channel quality is degraded (such as on days when the weather isstormy and foggy), the equipment adopts a lower modulation mode to transmit only the

services with a higher priority within the available bandwidth and to discard the services witha lower priority. In this manner, the anti-interference capability of the radio link is improved

and the link availability of the services with a higher priority is ensured.

When the Hybrid microwave equipment adopts the AM technology, it controls service

transmission based on the service bandwidth and QoS policy corresponding to the currentmodulation mode. The E1 services have the highest priority. By adopting the CoS technology,the equipment schedules Ethernet services of different types to the queues with different

priorities. The services in the queues with different priorities are transmitted to the microwave port through the SP or WRR algorithm. When the queues with certain priorities are congested

due to insufficient microwave bandwidth, the queues with these priorities discard certain orall services. When the Hybrid microwave works in the lowest modulation mode, the

equipment transmits only the E1 services and the Ethernet services with a high priority withinthe available bandwidth. When the Hybrid microwave works in any other modulation mode,

all the additional bandwidth is used to transmit the Ethernet services. In this manner, theavailability of the links that carry the E1 services and the Ethernet services with the high

priority is ensured and the Ethernet service capacity is increased, thus providing the dynamic bandwidth.


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Figure 2-4 shows the service change caused by the AM. The orange part indicates the E1services, and the blue part indicates the Ethernet services. The closer to the edge of the blue part, the lower the priority of the Ethernet service is. Under all channel conditions, the E1

services occupy the specific bandwidth that is permanently available. Thus, the availability ofthe E1 services is ensured. The bandwidth for the Ethernet services varies with the channel

conditions. When the channel is in bad conditions, the Ethernet services with a low priorityare discarded.

Figure 2-4 AM

Channel

capability

E1 services

256QAM32QAM

QPSK

256QAM

128QAM

32QAM

128QAM

64QAM

64QAM

16QAM

16QAM

Ethernet

services

The AM technology adopted by the OptiX RTN 950 has the following features:

The AM technology can use the QPSK, 16QAM, 32QAM, 64QAM, 128QAM, and

256QAM modulation mode.

The lowest modulation mode (also called "reference mode") and the highest modulationmode (also called "nominal mode") actually used by the AM can be configured.

When the modulation modes of AM are switched, the transmit frequency, receivefrequency, and channel spacing do not change.

When the modulation modes of AM are switched, the step-by-step switching mode must be adopted.

When the AM switches the modulation modes to a lower one, the services with the low priority are discarded but no bit errors or slips occur in the services with the high priority.

The speed of switching the modulation modes meets the requirement for no bit error inthe case of 100 dB/s fast fading.

2.3 RF Configuration Modes

The OptiX RTN 950 supports the 1+0 non-protection configuration, the N+0 non-protectionconfiguration, 1+1 protection configuration, N+1 protection configuration, and XPIC

configuration.


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2-5

Table 2-1 lists the RF link configuration modes that are supported.

Table 2-1 RF configuration modes

Configuration Mode Maximum Number of Configurations

1+0 non-protection configuration 6

1+1 protection configuration (1+1HSB/FD/SD)

3

N+0 non-protection configuration (N ≤ 5) 3 (N = 2)

2 (N = 3)

1 (N ≥ 4)

N+1 protection configuration (N ≤ 4) 3 (N = 1)

2 (N = 2)

1 (N ≥ 3)

XPIC configuration 3

When two 1+0 non-protection configurations form a microwave ring network, the special RF

configuration (namely, east and west configuration) is formed. In the case of the east and westconfiguration, the SNCP and the ERPS can be configured to protect the ring network of SDH/PDHservices and Ethernet services.

When the OptiX RTN 950 adds or drops services locally, it supports five 1+0 non-protectionconfigurations in the case of the TDM microwave, four 1+0 non-protection configurations in the

case of the Hybrid microwave, two 1+1 protection configurations, one 2+1 protection configuration,or two XPIC configurations.

Only the STM-1 microwave and Hybrid microwave support N+1 protection.

Only the Hybrid microwave supports the XPIC configuration.

Two XPIC configurations can form one 1+1 protection configuration of the XPIC.

2.4 Capacity

The OptiX RTN 950 has a high capacity.

2.4.1 Air Interface CapacityThe microwave air interface capacity is related to the specific microwave working mode.

If the radio link form is the SDH/PDH microwave, the maximum capacity of eachchannel of microwave is STM-1.

If the radio link form is the Hybrid microwave, the maximum capacity of each channelof microwave is 363 Mbit/s when the high power ODU is used or 183 Mbit/s when the

standard power ODU is used. If the XPIC technology is used, the service capacity of themicrowave channel can be doubled with same the spectrum bandwidth.


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2.4.2 Cross-Connect Capacity

The OptiX RTN 950 has a built-in MADM and provides full timeslot cross-connections for

VC-12/VC-3/VC-4 services equivalent to 32x32 VC-4s.

2.4.3 Switching Capacity

The OptiX RTN 950 has a built-in packet processing platform with the switching capacity of

10 Gbit/s.

2.5 Interfaces

The OptiX RTN 950 features multiple interface types.

2.5.1 Microwave InterfacesThe OptiX RTN 950 provides microwave interfaces on the IF board and the ODU that is

connected to the IF board. Each microwave interface transmits one channel of microwaveservice. In addition, it transmits various auxiliary services or paths through the microwaveoverheads.

Table 2-2 lists the auxiliary services or paths provided by each microwave interface.

Table 2-2 Auxiliary services or paths provided by each microwave interface

Service/Path Type Quantity Rate

Synchronous data service 1 64 kbit/s

Asynchronous data service 1 19.2 kbit/s

Orderwire phone service 1 64 kbit/s

Wayside E1 servicea 1 2048 kbit/s

DCC path 1 64 kbit/s (The capacity is

lower than 16xE1 PDHmicrowaves.)

192 kbit/s (The capacity isnot lower than 16xE1SDH/PDH microwaves.)

192 kbit/s (Hybridmicrowave)

The wayside E1 service is supported only when the radio link works in STM-1 mode.

2.5.2 Service Interfaces

The service interfaces of different types can be provided by configuring different service

interface boards.


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2-7

Table 2-3 lists the type and number of the service interfaces supported by adding serviceinterface boards to the OptiX RTN 950.

Table 2-3 Type and number of the service interfaces supported by adding service interface boards

Type of ServiceInterface Board

MaximumNumber ofBoards

Provided ServiceInterface

Number ofInterfacesProvided by OneBoard

SP3S 5 75-ohm or 120-ohmE1 interface

16

SP3D 5 75-ohm or 120-ohmE1 interface

32

SL1D 5 STM-1 optical

interface: Ie-1,S-1.1, L-1.1, andL-1.2

2

FE electrical

interface:10/100BASE-T(X)

4EM6T 5

GE electricalinterface:

10/100/1000BASE-T(X)

2

FE electrical

interface:10/100BASE-T(X)

4EM6F 5

GE electrical

interface:

10/100/1000BASE-T(X) or

GE optical interface:

1000Base-SX,1000Base-LX

2

"Maximum Number of Boards" in the Table 2-3 is the maximum number calculated when at least one IF

board is configured.

2.5.3 Management and Auxiliary Interfaces

The OptiX RTN 950 provides the management and auxiliary interfaces through the systemcontrol, switching, and timing board and the auxiliary board.


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Table 2-4 Type and number of management and auxiliary interfaces

Interface Specifications Quantity

External clock

interface

Combined 120-ohm 2,048 kbit/s or 2,048 kHz clock

input/output interface

1

10/100BASE-T(X) NM interface 1

NM serial interface 1

Managementinterface

10/100BASE-T(X) NE cascading interface 1

Orderwire interface 1

RS-232 asynchronous data interface 1

64 kbit/s synchronous data interface 1

Auxiliaryinterface

Wayside E1 interface 1

Alarm interface Alarm input/output interface Four inputs andtwo outputs

The external clock interface and wayside E1 interface are combined into one interface. This interfacecan transparently transmit the DCC byte, orderwire overhead byte, and synchronous/asynchronous

data service overhead byte. One interface, however, can implement only one of the three functions:external clock interface, wayside E1 service, and transparent transmission of the overhead byte.

The 64 kbit/s synchronous data interface can transparently transmit the orderwire byte. One interface,however, can implement only one of the two functions: 64 kbit/s synchronous data interface and

transparent transmission of the orderwire byte.

The external clock interface and the management interface are provided by the system control,

switching, and timing board (CST/CSH). The auxiliary interface and the alarm interface are provided by the AUX board.

The number of external clock interfaces or the number of management interfaces listed in the table isthe number of interfaces provided by one system control, switching, and timing board.

2.6 Cross-Polarization Interference Cancellation

Cross-polarization interference cancellation (XPIC) is a technology used together with

co-channel dual-polarization (CCDP). The application of the two technologies doubles thewireless link capacity over the same channel.

CCDP transmission adopts both the horizontally polarized wave and the vertically polarizedwave on one channel to transmit two channels of signals. The ideal situation of CCDP

transmission is that no interference is present between the two orthogonal signals although

they are with the same frequency. In this manner, the receiver can easily recover the twosignals. In actual engineering conditions, despite the orthogonality of the two signals,

interference between the signals inevitably occurs due to cross-polarization discrimination(XPD) of the antenna and channel degradation. To cancel the interference, the XPIC

technology is adopted. In XPIC technology, the signals are received in the horizontal andvertical directions. The signals in the two directions are then processed and the original

signals are recovered from interfered signals.


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2.7 Automatic Transmit Power Control

Automatic transmit power control (ATPC) enables the output power of the transmitter toautomatically trace the level fluctuation at the receive end within the ATPC control range.

This reduces the interference with neighboring systems and residual BER.

2.8 Ethernet Service Processing Capability

The OptiX RTN 950 provides the powerful Ethernet service processing capability.

Table 2-5 Ethernet service processing capability

Item Performance

Ethernet service

type

E-LINE and E-LAN

Maximum framelength

1518 bytes to 9600 bytes

VLAN Adds, deletes, and switches VALN tags that comply with IEEE

802.1q/p, and forwards packets based on VLAN tags.

Processes packets based on the port tag attribute(Tag/Hybrid/Access).

MAC address

learningcapability

The E-LAN service supports the MAC address learning capability intwo learning modes: SVL and IVL.

The capacity of the MAC address table is 16 k (including staticentities).

The MAC address aging time can be configured. The value rangesfrom 1 to 65535 minutes.

MSTP Supports the MSTP protocol, and generates only the Common and

Internal Spanning Tree (CIST).

IGMP Snooping Supported.

Link aggregation Supported for the FE/GE port and microwave port. Supports manual

aggregation and static aggregation, and load sharing and non-loadsharing. The load sharing algorithm is implemented based on the hash

of the MAC address or IP address.

ERPS Supports the G.8032 compliant ring network protection of Ethernetservices.

LPT Disables the Ethernet port that is connected to the user equipment

when the transmission network fails.

QoS Supported. For details, see 2.9 QoS.

Traffic control

function

Supports the IEEE 802.3x complaint traffic control function.

ETH-OAM Supports IEEE 802.1ag and IEEE 802.3ah compliant ETH-OAM

function.


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Item Performance

Ethernet

performancemonitoring

Supports IETF RFC2819 compliant RMON performance monitoring.

Port mirror Supported.

SynchronousEthernet

Supports G.8261 and G.8262 compliant synchronous Ethernet.

The E-Line service is an Ethernet private line service. The OptiX RTN 950 supports the private lineservice based on the Port, Port+VLAN, and Port+QinQ. A maximum of 1024 E-Line services are

supported.

The E-LAN service is an Ethernet private line service. The OptiX RTN 950 supports the private line

service based on the 802.1d bridge, 802.1q bridge, and 802.1ad bridge. The bridge supports amaximum of 1024 logical ports.

2.9 QoS

The OptiX RTN 950 provides improved quality of service (QoS) capabilities. Thus, the OptiXRTN 950 can offer various QoS levels of service guarantees and build an integrated network

to carry data, voice, and video services.

Table 2-6 QoS features

Feature Performance

Trafficclassification

Supports the traffic classification based on the Port, CVLAN ID,SVLAN ID, 802.1p priority of the C-VLAN/S-VLAN packet, andDSCP.

Traffic policing Supports the 64 kbit/s step of the CAR, PIR, and CIR.

Queue scheduling Each Ethernet port supports the queue scheduling of eight priorities.

Flexibly sets the queue scheduling scheme for each Ethernet port.The queue scheduling modes include SP, SP+WRR, and WRR.

Traffic shaping

Supports the shaping for the specified Port, priority queue, or serviceflow.

Supports the 64 kbit/s step of the PIR and CIR.

Buffer capacity 12 Mbit

2.10 Clock Features

The clock features of the OptiX RTN 950 meet the requirements for transporting the clock of

the mobile communication network and provide the complete clock protection mechanism.


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Supports the ITU-T G.813 compliant clock available in trace, holdover, and free-runmodes

Supports the extraction of the clock source from line, tributary, radio link, synchronousEthernet, and external clock signals.

Supports the SSM protocol and the extended SSM protocol, and the transmission of theSSM information through SDH line, SDH microwave, Hybrid microwave, synchronousEthernet, and external clock signals

Supports the tributary re-timing function

Supports the synchronous Ethernet function.

2.11 Protection Capability

The OptiX RTN 950 provides complete protection schemes.

Table 2-7 Protection schemes

Item Protection Capability

1+1 hot backup for the power input unitPower supply

1+1 hot backup of the internal power module

Control, switching, and timing

board

1+1 hot backup

1+1 HSB/SD/FD

N+1 protection (N≤

4)

SNCP for TDM servicea, b

ERPS for Ethernet service b

Radio Link

LAG protection for Ethernet service

LAG protection, which is supported for the FE/GE portand microwave port

MSTP

Ethernet

ERPS

1+1 linear MSP

N:1 linear MSP (N ≤ 4)

STM-1

SNCP for servicec


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Product Description



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a: When the SDH/PDH radio link forms the ring network protection, the SNCP is used to protect

SDH/PDH services.

b: When the Hybrid radio link forms the ring network protection, the SNCP is used to protect E1services and the ERPS is used to protect Ethernet services.

c: When the SDH radio link and the optical STM-1 path form a hybrid ring network, the SNCP is

used to protect services on the ring network.

2.12 Network Management

The OptiX RTN 950 supports multiple network management (NM) modes, and providescomplete NM information exchange schemes.

NM Mode

The OptiX RTN 950 supports the following functions:

Accessing the iManager LCT directly at the near end of the NE to perform thesingle-point management for the NE

Using the OptiX iManager U2000 to manage all OptiX RTN NEs on the transmission

network and the NEs of Huawei optical transmission products in the concentratedmanner and to manage the transmission networks in the unified manner

NM Information Exchange Schemes

At the physical layer, the OptiX RTN 950 supports the following NM information exchange

schemes:

Using one or three Huawei-defined DCC bytes in the PDH microwave frame to transmit NM information

Using the D1-D3, D4-D12, or D1-D12 bytes in the SDH microwave frame and the SDHframe to transmit NM information

Using three Huawei-defined bytes in the Hybrid microwave frame to transmit NMinformation

Using the Ethernet NM interface to transmit NM information

Using the DCC bytes that are transmitted through the external clock interface to transmit NM information on an SDH/PDH network

Supporting the inband DCN function, and using the Ethernet service bandwidth to

transmit NM information at the Hybrid microwave port or FE/GE port

At the network layer, the OptiX RTN 950 supports the following NM information exchangeschemes:

Using HWECC to transmit NM information

Using IP over DCC to transmit NM information

Using OSI over DCC to transmit NM information


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2.13 Easy Installation

The OptiX RTN 950 supports several installation modes. Thus, the installation of theequipment is flexible and convenient.

The IDU can be installed in the following modes:

In a 300 mm ETSI cabinet

In a 600 mm ETSI cabinet

In a 450 mm 19-inch cabinet

In a 600 mm 19-inch cabinet

In an open cabinet

On a wall

On a table

The ODU supports two installation modes: direct mounting and separate mounting.

2.14 Easy Maintenance

The OptiX RTN 950 provides several maintenance features. Thus, the cost of equipmentmaintenance is effectively reduced.

The OptiX RTN 950 supports the unified management of the microwave transmission

network and the optical transmission network at the network layer by using the iMangerU2000.

All the indicators and cable interfaces of the IDU are available on the front panel.

Each board of the IDU has the running and alarm status indicators.

The OptiX RTN 950 provides plentiful alarms and performance events.

The OptiX RTN 950 supports RMON performance events.

The OptiX RTN 950 supports the ETH OAM function.

The OptiX RTN 950 supports the monitoring and the graphic display of key radio

transmission performance specifications such as the microwave transmit power and theRSSI.

The OptiX RTN 950 supports various loopback functions of service ports and IF ports.

The OptiX RTN 950 has a built-in test system. You can perform the PRBS test of an IF port even when no special test tools are available.

The OptiX RTN 950 supports the port mirror function so that it can test and diagnoseservices without affecting Ethernet services.

The CF card that stores the data configuration file and the software can be replaced onsite. Thus, you can load the data or upgrade the software by replacing the CF card.

Two sets of software and data are stored in the flash memory of the control, switching,

and timing board to facilitate the smooth upgrade.

The OptiX RTN 950 supports the regular backup and restoration of the NE databaseremotely by using the U2000.

The OptiX RTN 950 supports the remote loading of the NE software and data by using

the U2000 to provide a complete NE upgrade solution. Thus, the entire network can beupgraded rapidly.


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The OptiX RTN 950 supports the NSF function. When the soft reset is performed for the NE software, SDH/PDH services and E-Line services are not interrupted, thusimplementing the smooth software upgrade.

The OptiX RTN 950 supports the hot patch loading function. You can upgrade the

software that is running without interrupting services. The OptiX RTN 950 supports the software version rollback function. When a software

upgrade fails, the original software can be recovered, and therefore the original servicesof the system can be restored.


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Table 3-1 Functional unit (SDH/PDH microwave)

Functional Unit Function

Service interface

unit

Accesses E1 signals.

Accesses STM-1 signals.

Timeslotcross-connect unit

Provides the cross-connect function and grooms TDM services.

IF unit Maps service signals to microwave frame signals and demapsmicrowave frame signals to service signals.

Performs conversion between microwave frame signals and IFanalog signals.

Provides the O&M channel between the IDU and the ODU.

Supports FEC.

Control unit Provides the system communications and control. Provides the system configuration and management.

Collects alarms and monitors performance.

Processes overheads.

Clock unit Traces the clock source signals and provides various clock signals

for the system.

Provides the input/output interface for external clock signals.

Auxiliary interfaceunit

Provides the orderwire interface.

Provides the synchronous/asynchronous data interface.

Provides the external alarm input/output interface.

Power unit Accesses -48 V/-60 V DC power.

Provides DC power for the IDU.

Provides -48 V DC power for the ODU.

Fan unit Provides the wind cooling function for the IDU.


The Hybrid microwave equipment consists of a series of functional units, including theservice interface unit, timeslot cross-connect unit, packet switching unit, IF unit, control unit,clock unit, auxiliary interface unit, fan unit, power unit, and ODU.


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Product Description 3 Product Structure



3-3

Figure 3-2 Block diagram (Hybrid microwave)

Sync/Async data

External alarm data

Packet

switching

unit

IF unit

ODU

E1/STM-1

-48V/-60V DC

IDU

Ethernet

Ethernet

signal

Timeslot

cross-

connect

unit

VC-4

signal

Orderwire data

Service

interface

unit

Control and

overhead bus

Fan

unit

Clock

unit

Control

unit

Auxiliary

interface

unit

Power

unit

Clock interface NM data

Ethernet

signal

VC-4

signal

IF signal

RF

signal

Antenna

Table 3-2 Functional unit (Hybrid microwave)


Service interfaceunit

Accesses E1 signals.

Accesses STM-1 signals.

Accesses Ethernet signals.

Timeslotcross-connect unit

Provides the cross-connect function and grooms TDM services.

Packet switchingunit

Processes Ethernet services and forwards packets.

IF unit Maps service signals to microwave frame signals and demaps

microwave frame signals to service signals.

Performs conversion between microwave frame signals and IFanalog signals.

Provides the O&M channel between the IDU and the ODU.

Supports FEC.

Control unit Provides the system communications and control.

Provides the system configuration and management.

Collects alarms and monitors performance.

Processes overheads.


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3 Product Structure


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Clock unit Traces the clock source signal and provides various clock signals

for the system.

Supports input and output of one external clock signal.

Auxiliary interfaceunit

Provides the orderwire interface.

Provides the synchronous/asynchronous data interface.

Provides the external alarm input/output interface.

Power unit Accesses -48 V/-60 V DC power.

Provides DC power for the IDU.

Provides -48 V DC power for the ODU.

Fan unit Provides the wind cooling function for the IDU

3.2 Hardware Structure

The OptiX RTN 950 adopts a split structure. The system consists of the IDU and the ODU.

An ODU is connected to an IDU through an IF cable. The IF cable transmits IF servicesignals and the O&M signals of the ODU, and supplies -48 V DC power to the ODU.

3.2.1 IDU

The IDU 950 is the indoor unit of the OptiX RTN 950.

The IDU 950 adopts the card plug-in design. It can implement different functions by

configuring different types of boards. All the service boards support hot-swapping.

Figure 3-3 IDU slot layout

Slot

9

(PIU)

Slot 7 (CST/CSH)

Slot 1 (EXT)

Slot 5 (EXT)

Slot 3 (EXT)

Slot 2 (EXT)

Slot 4 (EXT)

Slot 6 (EXT)

Slot 8 (CST/CSH)Slot

10

(PIU) Slot

11

(FAN)

The EXT represents an extended slot, which can be inserted with various IF boards and interface boards.


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Table 3-3 List of IDUs

BoardName

FullSpelling Valid Slot Description

CST TDMcontrol,switching,

and timing board

Slot 7 or slot8

Provides full timeslot cross-connectionsfor VC-12/VC-3/VC-4 services equivalentto 32x32 VC-4s.

Performs system communication andcontrol.

Provides the clock processing function

and supports one external clockinput/output function.

Provides one Ethernet NM interface, one

NM serial interface, and one NEcascading interface.

CSH Hybridcontrol,

switching,

and timing board

Slot 7 or slot8

Provides full timeslot cross-connectionsfor VC-12/VC-3/VC-4 services equivalent

to 32x32 VC-4s.

Provides the 10 Gbit/s packet switchingcapability.

Performs system communication andcontrol.

Provides the clock processing function

and supports one external clockinput/output function.

Provides one Ethernet NM interface, one

NM serial interface, and one NEcascading interface.

IF1 SDH IF

board

Slot 1 to slot

6

Provides one IF interface.

Supports the TU-based PDH microwavesolution and the STM-1-based SDHmicrowave solution.

IFU2 Universal IF board

Slot 1 to slot6

Provides one IF interface.

Supports the Hybrid microwave solution.

Supports AM.

IFX2 UniversalXPIC IF board

Slot 1 to slot6

Provides one IF interface. Supports the XPIC function of the Hybrid

microwave.

Supports the AM of the Hybridmicrowave.

SL1D 2xSTM-1

interface board

Slot 1 to slot6

Uses the SFP module to provide two STM-1optical interfaces.


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BoardName

FullSpelling Valid Slot Description

EM6T 6 Port RJ45

Ethernet/Gigabit Ethernet

InterfaceBoard

Provides four FE electrical interfaces.

Provides two GE electrical interfaces thatare compatible with the FE electricalinterface.

EM6F 4 Port RJ45

+ 2 Port SFPFast

Ethernet/Gigabit Ethernet

InterfaceBoard

Slot 1 to slot

6

Provides four FE electrical interfaces.

Uses the SFP module to provide two GE

optical or electrical interfaces. The GEelectrical interfaces are compatible withthe FE electrical interfaces.

SP3S 16xE1tributary board

Slot 1 to slot6 Provides sixteen 75-ohm or 120-ohm E1interfaces.

SP3D 32xE1

tributary board

Slot 1 to slot

6

Provides thirty-two 75-ohm or 120-ohm E1

interfaces.

AUX Auxiliary

interface board

Slot 1 to slot

6

Provides one orderwire interface, one

asynchronous data interface, and four-inputand two-output external alarm interfaces.

TND1PIU Power board Slot 9 or slot10

Provides one -48 V/-60 V DC power input.

TND1FAN Fan board Slot 11 Cools and ventilates the IDU.

3.2.2 ODU

The ODU is an integrated system and has various types. The architectures and working

principles of various types of ODUs are almost the same.


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3-7

Block Diagram

Figure 3-4 Block diagram of the ODU

Antenna port

CTRL

Tx IF

Rx IF

Cable port

PWR

Up-conversionMultiplexer

O&M

uplink

O&M

downlink

DC

Down-conversion

AMP

LNA

Synthesizers

Duplexer

Rx RF

Tx RF

Signal Processing in the Transmit Direction

The multiplexer splits the signal coming from the IF cable into a 350 MHz IF signal, an O&M

uplink signal, and a -48 V DC power signal.

In the transmit direction, the IF signal is processed as follows:

1. Through the up-conversion, filtering, and amplification, the IF signal is converted intothe RF signal and then is sent to the AMP amplifier unit.

2. The AMP amplifies the RF signal (the output power of the signal can be controlled bythe IDU software).

3. After the amplification, the RF signal is sent to the antenna through the duplexer.

The O&M uplink signal is a 5.5 MHz ASK-modulated signal and is demodulated in the CTRL

control unit.

The -48 V DC power signal is sent to the PWR power unit where the secondary power supply

of a different voltage is generated and provided to the modules of the ODU.

Signal Processing in the Receive Direction

In the duplexer, the receive RF signal is separated from the antenna signal. The RF signal isamplified in the low noise amplifier (LNA). Through the down-conversion, filtering, andamplification, the RF signal is converted into the 140 MHz IF signal and then sent to the

multiplexer.

The O&M downlink signal is modulated under the ASK scheme in the CTRL unit. The 10MHz signal is generated through the modulation and is sent to the multiplexer. The CTRL unit

also detects the received signal power through the RSSI detection circuit and provides the

RSSI interface.

The IF signal and the O&M downlink signal are combined in the multiplexer and then sent to

the IDU through the IF cable.


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3.3 Software Structure

The OptiX RTN 950 software consists of the NMS software, IDU software, and ODUsoftware.

Figure 3-5 shows the software structure. The NMS software communicates with the NE

software through the Qx interface. The Qx interface uses the OptiX private management protocol.

Figure 3-5 Software structure

NMS software

Qx interface

IDU software ODU software

3.3.1 NMS Software

Huawei provides a transmission network management solution that meets the requirements of

the telecommunication management network (TMN) for managing all the OptiX RTN products and other OptiX series transmission products on the network.

3.3.2 IDU Software

The IDU software consists of the NE software and the board software.

The NE software manages, monitors, and controls the running status of the IDU. Through the

NE software, the NMS communicates with the boards, and controls and manages the NE. The

NE software communicates with the ODU software to manage and control the running of theODU.

The board software manages and controls the running status of other boards of the IDU except

the system control, switching, and timing board. The boards except the EM6T/EM6F board inthe IDU do not have their independent board software. The board software of the boards

except the EM6T/EM6F board in the IDU is integrated as software modules with the NEsoftware and runs in the CPU of the system control, switching, and timing board.

3.3.3 ODU SoftwareThe ODU Software manages and controls the running status of the ODU. The ODU softwarecontrols the running of the ODU based on the parameters transmitted by the IDU software.

The ODU running status is reported to the IDU software.

3.4 Service Signal Processing Flow

The flow for transmitting the PDH microwave signals is different from the flow fortransmitting the Hybrid microwave signals.


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3.4.1 SDH/PDH Microwave

This topic considers the transmission of the E1 services by the IF1 board as an example to

describe the service signal processing flow of the SDH/PDH microwave.

Figure 3-6 Service signal processing flow of the SDH/PDH microwave

ODU

RFsignal

IFsignal

Antenna

SP3S/SP3D

IF1

IDU

E1 CST/CSH

VC-4signal

VC-4

signal

Table 3-4 Service signal processing flow of the SDH/PDH microwave in the transmit direction

NO. Component Signal Processing Description

1 SP3S/SP3D Accesses E1 signals.

Performs HDB3 decoding.

Maps E1 service signals into VC-12 signals.

Multiplexes the VC-12 signals into VC-4 signals.

Transmits the VC-4 signals to the timeslot cross-connectunit of the CST/CSH.

2 CST/CSH The timeslot cross-connect unit grooms VC-12 signals to

the VC-4 signals of the IF1 board.

3 IF1 Demultiplexes the VC-12 signals to be transmitted from

VC-4 signals.

Maps the VC-12 signals into the TU-12-based orSTM-1-based microwave frame payload area to add

microwave frame overheads and pointers, and formcomplete microwave frames.

Performs FEC coding.

Performs digital modulation.

Performs D/A conversion.

Performs analog modulation. Combines the analog IF signals and ODU O&M signals.

Transmits the combined signals and -48 V power to theODU through the IF cable.

4 ODU Splits the analog IF signals, ODU O&M signals, and -48

V power.

Converts the analog IF signals into RF signals through up

conversions and amplification.

Transmits the RF signals to the antenna through thewaveguide.


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Table 3-5 Service signal processing flow of the SDH/PDH microwave in the receive direction


1 ODU Isolates and filters RF signals.

Converts the RF signals into analog IF signals throughdown conversions and amplification.

Combines the IF signals and the ODU O&M signals.

Transmits the combined signals to the IF board throughthe IF cable.

2 IF1 Splits the received analog IF signals and ODU O&M

signals.

Performs A/D conversion for the IF signals.

Performs digital demodulation.

Performs time domain adaptive equalization.

Performs FEC decoding.

Synchronizes and descrambles the frames.

Extracts overheads from microwave frames.

Extracts VC-12 signals from the microwave frames andmultiplexes the VC-12 signals into VC-4 signals.

Transmits the VC-4 signals to the timeslot cross-connectunit of the CST/CSH.

3 CST/CSH The timeslot cross-connect unit grooms VC-12 signals tothe VC-4 signals of the SP3S/SP3D.

4 SP3S/SP3D Demultiplexes VC-12 signals from VC-4 signals. Demaps E1 service signals from the VC-12 signals.

Performs HDB3 coding.

Outputs E1 signals.


This topic considers the transmission of the E1 services and the FE services by the IFU2 as anexample to describe the service signal processing flow of the Hybrid microwave.


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3-11

Figure 3-7 Service signal processing flow of the Hybrid microwave

SP3S/

SP3D

IFU2

IDU

E1

CSH

VC-4

signal

VC-4signal

EM6T/EM6F

FE Ethernetsignal

ODU

RFsignal

IFsignal

AntennaEthernetsignal

Table 3-6 Service signal processing flow of the Hybrid microwave in the transmit direction

NO. Component Signal Processing DescriptionSP3S/SP3D Accesses E1 signals.

Performs HDB3 decoding.

Maps E1 service signals into VC-12 signals.

Multiplexes the VC-12 signals into VC-4 signals.

Transmits the VC-4 signals to the timeslot cross-connectunit of the CSH.

1

EM6T/EM6F Accesses FE signals.

Performs decoding.

Aligns frames, strips the preamble code, and processes theCRC check code.

Forwards Ethernet frames to the packet switching unit ofthe CSH.

2 CSH Based on the service configuration, the timeslot

cross-connect unit grooms VC-12 signals to the VC-4signals of the IFU2 board.

The packet switching unit processes Ethernet frames

based on the configuration and the Layer 2 protocol, andthen forwards the processed Ethernet frames to the IFU2through the microwave port.


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3 IFU2 Selects the proper modulation mode based on the current

channel quality.

Demultiplexes the VC-12 signals to be transmitted fromVC-4 signals.

Demaps E1 service signals from the VC-12 signals.

Maps the E1 service signals and the Ethernet frames intothe microwave frame payload area to add microwave

frame overheads and form complete microwave frames.

Performs FEC coding.

Performs digital modulation.

Performs D/A conversion.

Performs analog modulation

Combines the analog IF signals and ODU O&M signals. Transmits the combined signals and -48 V power to the

ODU through the IF cable.

4 ODU Splits the analog IF signals, ODU O&M signals, and -48V power.

Converts the analog IF signals into RF signals through up

conversions and amplification.

Transmits the RF signals to the antenna through thewaveguide.

Table 3-7 Service signal processing flow of the Hybrid microwave in the receive direction


1 ODU Isolates and filters RF signals.

Converts the RF signals into analog IF signals throughdown conversions and amplification.

Combines the IF signals and the ODU O&M signals.

Transmits the combined signals to the IF boards throughthe IF cable.


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2 IFU2 Splits the received analog IF signals and ODU O&M

signals.

Performs A/D conversion. Performs digital demodulation.

Performs time domain adaptive equalization.

Performs FEC decoding.

Synchronizes and descrambles the frames.

Extracts overheads from microwave frames.

Extracts E1 service signals from microwave frames andmaps the E1 service signals into VC-12 signals.

Multiplexes the VC-12 signals into VC-4 signals and

transmits the VC-4 signals to the timeslot cross-connect

unit of the CSH board. Extracts Ethernet frames from the microwave frames, and

then transmits the Ethernet frames to the packet switchingunit of the CSH board.

3 CSH Based on the data configuration, the timeslot

cross-connect unit grooms VC-12 signals to the VC-4signals of the SP3S or SP3D.

The packet switching unit processes Ethernet frames

based on the configuration and the Layer 2 protocol, andthen forwards the processed Ethernet frames to the related

EM6T/EM6F board.

SP3S/SP3D Demultiplexes VC-12 signals from VC-4 signals.

Demaps E1 service signals from the VC-12 signals.

Performs HDB3 coding.

Outputs E1 signals.

4

EM6T/EM6F Aligns frames, adds the preamble code, and processes theCRC check code.

Performs coding.

Outputs FE signals.


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Product Description 4 Networking



4-1

4 NetworkingThe OptiX RTN 950 provides complete microwave transmission solutions and supports

several types of networking solutions to meet different customer requirements.

4.1 SDH/PDH Microwave

The SDH/PDH microwave has two networking modes, namely, chain networking and ring

networking.

4.1.1 Chain Networking

In the TDM microwave transmission solution wherein the chain networking is the basicnetworking form, a hop of radio link is the basic networking unit.

Figure 4-1 shows the TDM microwave transmission solution wherein the chain networking isthe basic form of networking. In this solution:

The PDH radio link of the corresponding air-interface capacity can be established based

on the capacity of an access link. An ordinary link adopts the 1+0 non-protectionconfiguration, and an important link adopts the 1+1 protection configuration.

In the case of aggregation links, the SDH/PDH radio link with the appropriateair-interface capacity can be established based on the capacity of the aggregation links.

In addition, by configuring the N+1 protection of the SDH links, the service capacity between two stations can be improved to NxSTM-1.

By using the multidirectional microwave convergence capacity of the OptiX RTN 950,

the multi-hop microwave convergence transmission of the nodal station can be realized.


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Figure 4-1 TDM microwave transmission solution (chain networking)

Tail link Feeder link


STM-1

BSC

BTS

BTS

BTS

1+1

1+0

1+1E1

E1

E1

4.1.2 Ring NetworkingIn the TDM microwave transmission solution wherein the ring networking is the basicnetworking form, the SNCP is used to protect SDH/PDH services on the microwave ring.

Figure 4-2 shows the TDM microwave transmission solution wherein the ring networking isthe basic networking form. In this solution, the SNCP is used to protect SDH/PDH microwavetransmission services.

Figure 4-2 TDM microwave transmission solution (ring networking)

SDH/PDH radio ringBTS

BTS

BTS

BTS


STM-1

BSC

E1

E1

E1

E1

The ring networking has a special form. That is, when the OptiX RTN 950 is used to establishan STM-1 radio link, the OptiX RTN 950 and the optical transmission equipment form the

hybrid ring network of optical fibers and microwaves. The ring network also uses the SNCPto protect the services on the ring, as shown in Figure 4-3.


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Product Description 4 Networking



4-3

Figure 4-3 TDM microwave transmission solution (hybrid networking formed with the opticaltransmission equipment)

STM-1 ringBTS

BTS

BTS

BTS


STM-1

BSCOptical

transmissionequipment

E1

E1

E1

E1

4.2 Hybrid Microwave

The Hybrid microwave has two networking modes, namely, chain networking and ring

networking.

4.2.1 Chain NetworkingIn the Hybrid microwave transmission solution wherein the chain networking is the basicnetworking form, a hop of radio link is the basic networking unit.

Figure 4-4 shows the Hybrid microwave transmission solution wherein the chain networkingis the basic networking form. In this solution:

The Hybrid radio link of the corresponding air-interface capacity can be established

based on the capacity of an access link. An ordinary link adopts the 1+0 non-protectionconfiguration. An important link adopts the 1+1 protection configuration.

The Hybrid radio link of the corresponding air-interface capacity can be establishedaccording to the capacity of an aggregation link. The Hybrid radio link adopts the 1+1

protection configuration. By configuring the 1+1 protection for the XPIC Hybrid link,the service capacity of the same microwave channel can be doubled. In addition, by

configuring the N+1 protection of the Hybrid radio link, the service capacity betweentwo stations can be improved by N times.

By using the multidirectional microwave convergence capacity of the OptiX RTN 950,the multi-hop microwave convergence transmission of the nodal station can be realized.


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Figure 4-4 Hybrid microwave transmission solution (chain networking)

Tail link Feeder link

1+1

1+0

1+1

BTS

BTS

E1

FE

FE

E1

NodeB

NodeB


STM-1+GE

BSC

RNC

4.2.2 Ring Networking

In the Hybrid microwave transmission solution wherein the ring networking is the basic

networking form, the SNCP is used to protect the E1 services on the microwave ring, and theERPS is used to protect Ethernet services on the microwave ring.

Figure 4-5 Hybrid microwave transmission solution (ring networking)

BTS

E1

FE

NodeB

Hybrid radio ring

BTS

E1

FE

BTS

E1

FE

NodeB

Regional backhaul

network

STM-1+

GE

BSCNodeB

RNC


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Product Description 5 Network Management System



5-1

5 Network Management SystemThis topic describes the network management solution and the NMS software that contributes

to this solution.

5.1 Network Management Solution

Huawei provides a complete transport network management solution compliant with TMN for

different function domains and customers on telecommunication networks.

The NM solutions include the following:

iManager LCT local maintenance terminal

iManager U2000 unified network management system

Figure 5-1 Network management solution to the transmission network

Network-level NM

Local craft terminal

iManager U2000

iManager LCT

5.2 LCT

The LCT is a local maintenance terminal. The LCT provides the following management

functions at the NE layer: NE management, alarm management, performance management,configuration management, communication management, and security management.

NE Management

Search of NEs


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5 Network Management System


Product Description



Issue 02 (2009-12-20)

Addition/Deletion of NEs

Login or logout of NEs

NE time management

Alarm Management Setting of alarm monitoring strategies

View of alarms

Deletion of alarms

Performance Management Setting of performance monitoring strategies

View of performance events

Resetting of performance registers

Configuration Management Basic NE information configuration

Radio link configuration

Protection configuration

Interface configuration

Service configuration

Clock configuration

Communication Management Communication parameter management

DCC management

HWECC protocol management

IP protocol management

OSI protocol management

Security Management NE user management

NE user group management

LCT access control

Online user management

NE security parameters

NE security log

NMS user management

NMS log management


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Product Description 5 Network Management System



5-3

5.3 U2000

The U2000 is a network-level network management system. A user can access the U2000server through a U2000 client to manage Huawei transport subnets in the unified manner. The

U2000 can provide not only the NE-level management function, but also the managementfunction at the network layer.

NE Level Management NE object management

NE level alarm management

NE level performance management

NE level configuration management

NE level communication management

NE level security management

Network Level Management Topology management

Network level alarm management

Network level performance management

Network level configuration management

Network level communication management

Network level security management

Network-wide clock management

Others Report function

Northbound SNMP interface


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6 Performance


Product Description



Issue 02 (2009-12-20)

The SDH/PDH radio link of the OptiX RTN 950 supports all microwave modulation mode. If theSDH/PDH radio link supports the 4xE1/16QAM microwave modulation mode, it cannot use thehigh power ODU.

Hybrid Microwave Work Modes

Table 6-2 Hybrid microwave work modes (IFU2 board)

ChannelSpacing(MHz)

ModulationMode

ServiceCapacity(Mbit/s)

MaximumNumber ofE1s inServices

EthernetThroughput(Mbit/s)

7 QPSK 10 5 9 to 11

7 16QAM 20 10 19 to 23

7 32QAM 25 12 24 to 29

7 64QAM 32 15 31 to 37

7 128QAM 38 18 37 to 44

7 256QAM 44 21 43 to 51

14 (13.75) QPSK 20 10 20 to 23

14 (13.75) 16QAM 42 20 41 to 48

14 (13.75) 32QAM 51 24 50 to 59

14 (13.75) 64QAM 66 31 65 to 76

14 (13.75) 128QAM 78 37 77 to 90

14 (13.75) 256QAM 90 43 90 to 104

28 (27.5) QPSK 42 2

Documents

RTN950 Product Description