RTN 950 Product Description(V100R002C00_02)-20091220

OptiX RTN 950 Radio Transmission System V100R002C00 Product Description

Issue 02

Date 2009-12-20

HUAWEI TECHNOLOGIES CO., LTD.

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]

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 the OptiX RTN 950.

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

About This Document OptiX RTN 950 Radio Transmission System

Product Description

iv Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

Issue 02 (2009-12-20)

Chapter Content

3 Product Structure Describes the system architecture, hardware architecture, software architecture, and signal processing flow of the OptiX RTN 950.

4 Networking Describes common networking modes of the OptiX RTN 950.

5 Network Management System

Describes the network management (NM) solution for the OptiX RTN 950, and also the NM software that contributes to this solution.

6 Performance Describes the performance indexes of the OptiX RTN 950.

A Glossary Lists the terms.

B Acronyms and Abbreviations

Lists the acronyms and abbreviations.

Conventions

Symbol Conventions The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates a hazard with a high level of risk, which if not avoided, will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not avoided, could result in equipment damage, data loss, performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save time.

Provides additional information to emphasize or supplement important points of the main text.

General Conventions The general conventions that may be found in this document are defined as follows.

OptiX RTN 950 Radio Transmission System Product Description About This Document


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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.

Courier New Examples of information displayed on the screen are in Courier New.

Update History Updates between document issues are cumulative. Thus, the latest document issue contains all updates 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.

OptiX RTN 950 Radio Transmission System 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

Contents OptiX RTN 950 Radio Transmission System

Product Description

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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

OptiX RTN 950 Radio Transmission System Product Description Contents


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

OptiX RTN 950 Radio Transmission System Product Description 1 Introduction


1-1

1 Introduction

The 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 TDM microwave, Hybrid microwave, and Packet microwave based on the network requirements. It supports the smooth upgrade from the TDM microwave to the Hybrid microwave, and from the Hybrid microwave to the Packet microwave. The solution can evolve based on the service changes 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 Hybrid microwave transmission solution respectively that are provided by the OptiX RTN 950 for the mobile communication network.

1 Introduction OptiX RTN 950 Radio Transmission System

Product Description

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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 BackhaulNetwork

E1 E1

E1

E1

E1E1

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

Regional backhaulnetwork

OptiX RTN 950 BTSNodeB BSCRNC

FEE1

FEE1

E1

E1FE

FE/GE

E1

GE

E1

E1

STM-1/E1

FE



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 application scenarios.

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

Radio Link Form Type of the System Control, Cross-Connect, and Timing Board

Type of the IF Board

Type of the ODU

SDH/PDH radio link CST/CSH IF1 Standard power ODU or high power ODU

Hybrid radio link CSH IFU2 Standard power ODU or high power ODU

Hybrid radio link that supports the XPIC

CSH IFX2 Standard power ODU or high power ODU

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, performs multiplexing/demultiplexing and IF processing of the services, and provides system control and 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

1 Introduction OptiX RTN 950 Radio Transmission System

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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 38 GHz 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 the corresponding 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 and single-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



1-5

hybrid coupler) must be mounted to connect the ODUs to the antenna. Figure 1-4 shows the 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

OptiX RTN 950 Radio Transmission System Product Description 2 Functions and Features


2-1

2 Functions and Features

The 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-in MADM. 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

……

2 Functions and Features OptiX RTN 950 Radio Transmission System

Product Description


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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 seamless convergence 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 native Ethernet 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 then transmits the Hybrid microwave frames.

Figure 2-3 Hybrid microwave

ODU

Ethernet

E1IDU

TDMcross-connect

matrix

Packetswitching

Hybrid radio

Native E1 and native Ethernet

The characteristics of Hybrid microwave frames are as follows:



2-3

The frames with a fixed period are used for transmission. In the specific modulation mode or channel spacing, the length of Hybrid microwave

frames 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 microwave supports 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 adjusted automatically 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 the transmitted 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 user services. 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 is stormy 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 with a 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 current modulation 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 or all 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 within the 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, the availability 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 E1 services, 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 of the 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 priority are discarded.

Figure 2-4 AM

Channelcapability

E1 services

256QAM32QAM

QPSK

256QAM

128QAM

32QAM

128QAM

64QAM

64QAM

16QAM16QAM

Ethernetservices

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 modulation mode (also called "nominal mode") actually used by the AM can be configured.

When the modulation modes of AM are switched, the transmit frequency, receive frequency, 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 in the 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-protection configuration, 1+1 protection configuration, N+1 protection configuration, and XPIC configuration.



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+1 HSB/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 west configuration, the SNCP and the ERPS can be configured to protect the ring network of SDH/PDH services and Ethernet services.

When the OptiX RTN 950 adds or drops services locally, it supports five 1+0 non-protection configurations 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 Capacity The 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 each channel of microwave is STM-1.

If the radio link form is the Hybrid microwave, the maximum capacity of each channel of 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 the microwave channel can be doubled with same the spectrum bandwidth.


Product Description


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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 Interfaces The 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 microwave service. In addition, it transmits various auxiliary services or paths through the microwave overheads.

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 PDH microwaves.) 192 kbit/s (The capacity is not lower than 16xE1 SDH/PDH microwaves.) 192 kbit/s (Hybrid microwave)

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.



2-7

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

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

Type of Service Interface Board

Maximum Number of Boards

Provided Service Interface

Number of Interfaces Provided by One Board

SP3S 5 75-ohm or 120-ohm E1 interface

16

SP3D 5 75-ohm or 120-ohm E1 interface

32

SL1D 5 STM-1 optical interface: Ie-1, S-1.1, L-1.1, and L-1.2

2

FE electrical interface: 10/100BASE-T(X)

4 EM6T 5

GE electrical interface: 10/100/1000BASE-T(X)

2

FE electrical interface: 10/100BASE-T(X)

4 EM6F 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 system control, switching, and timing board and the auxiliary board.


Product Description


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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

Management interface

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

Orderwire interface 1

RS-232 asynchronous data interface 1

64 kbit/s synchronous data interface 1

Auxiliary interface

Wayside E1 interface 1

Alarm interface Alarm input/output interface Four inputs and two outputs

The external clock interface and wayside E1 interface are combined into one interface. This interface

can 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 is the 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 the wireless link capacity over the same channel.

CCDP transmission adopts both the horizontally polarized wave and the vertically polarized wave 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 two signals. 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 and vertical 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 to automatically 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 frame length

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 learning capability

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

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

The MAC address aging time can be configured. The value ranges from 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-load sharing. 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 Ethernet services.

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 performance monitoring

Supports IETF RFC2819 compliant RMON performance monitoring.

Port mirror Supported.

Synchronous Ethernet

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 line

service 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 a maximum of 1024 logical ports.

2.9 QoS The OptiX RTN 950 provides improved quality of service (QoS) capabilities. Thus, the OptiX RTN 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

Traffic classification

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

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 service flow.

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.



2-11

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

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

Supports the SSM protocol and the extended SSM protocol, and the transmission of the SSM information through SDH line, SDH microwave, Hybrid microwave, synchronous Ethernet, 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 unit Power 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 serviceb

Radio Link

LAG protection for Ethernet service

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

MSTP

Ethernet

ERPS

1+1 linear MSP

N:1 linear MSP (N ≤ 4)

STM-1

SNCP for servicec


Product Description


Issue 02 (2009-12-20)

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 E1

services 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 provides complete 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 the single-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 concentrated manner 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 SDH frame to transmit NM information

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

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 exchange schemes:

Using HWECC to transmit NM information Using IP over DCC to transmit NM information Using OSI over DCC to transmit NM information



2-13

2.13 Easy Installation The OptiX RTN 950 supports several installation modes. Thus, the installation of the equipment 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 equipment maintenance 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 iManger U2000.

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 the RSSI.

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 diagnose

services without affecting Ethernet services. The CF card that stores the data configuration file and the software can be replaced on

site. 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 database

remotely 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 be upgraded rapidly.


Product Description


Issue 02 (2009-12-20)

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, thus implementing 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 services of the system can be restored.

OptiX RTN 950 Radio Transmission System Product Description 3 Product Structure


3-1

3 Product Structure

This topic describes the system architecture, hardware architecture, and software architecture of the product, and the process of processing service signals.

3.1 System Architecture The SDH/PDH microwave system architecture is different from the Hybrid microwave architecture.

3.1.1 SDH/PDH Microwave The SDH/PDH microwave equipment consists of a series of functional units, including the service interface unit, timeslot cross-connect unit, IF unit, control unit, clock unit, auxiliary interface unit, fan unit, power unit, and ODU.

Figure 3-1 Block diagram (SDH/PDH microwave)

Sync/Async dataExternal alarm data

IF unit

ODU

E1/STM-1

-48V/-60V DC

IDU

Timeslotcross-

connectunit

VC-4signal

Orderwire data

Serviceinterface

unitControl and

overhead bus

Fanunit

Clockunit

Controlunit

Auxiliaryinterface

unit

Powerunit

Clock interface NM data

VC-4signal

IF signal

RFsignal

Antenna

3 Product Structure OptiX RTN 950 Radio Transmission System

Product Description


Issue 02 (2009-12-20)

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

Functional Unit Function

Service interface unit

Accesses E1 signals. Accesses STM-1 signals.

Timeslot cross-connect unit

Provides the cross-connect function and grooms TDM services.

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

Performs conversion between microwave frame signals and IF analog 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 interface unit

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.

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



3-3

Figure 3-2 Block diagram (Hybrid microwave)

Sync/Async dataExternal alarm data

Packetswitching

unit

IF unit

ODU

E1/STM-1

-48V/-60V DC

IDU

Ethernet

Ethernetsignal

Timeslotcross-

connectunit

VC-4signal

Orderwire data

Serviceinterface

unit

Control andoverhead bus

Fanunit

Clockunit

Controlunit

Auxiliaryinterface

unit

Powerunit

Clock interface NM data

Ethernetsignal

VC-4signal

IF signal

RFsignal

Antenna

Table 3-2 Functional unit (Hybrid microwave)


Service interface unit

Accesses E1 signals. Accesses STM-1 signals. Accesses Ethernet signals.

Timeslot cross-connect unit

Provides the cross-connect function and grooms TDM services.

Packet switching unit

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 IF analog 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.


Product Description


Issue 02 (2009-12-20)


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 interface unit

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 service signals 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

Slot9

(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)Slot10

(PIU) Slot11

(FAN)

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



3-5

Table 3-3 List of IDUs

Board Name

Full Spelling Valid Slot Description

CST TDM control, switching, and timing board

Slot 7 or slot 8

Provides full timeslot cross-connections for VC-12/VC-3/VC-4 services equivalent to 32x32 VC-4s.

Performs system communication and control.

Provides the clock processing function and supports one external clock input/output function.

Provides one Ethernet NM interface, one NM serial interface, and one NE cascading interface.

CSH Hybrid control, switching, and timing board

Slot 7 or slot 8

Provides full timeslot cross-connections for VC-12/VC-3/VC-4 services equivalent to 32x32 VC-4s.

Provides the 10 Gbit/s packet switching capability.

Performs system communication and control.

Provides the clock processing function and supports one external clock input/output function.

Provides one Ethernet NM interface, one NM serial interface, and one NE cascading interface.

IF1 SDH IF board

Slot 1 to slot 6

Provides one IF interface. Supports the TU-based PDH microwave solution and the STM-1-based SDH microwave solution.

IFU2 Universal IF board

Slot 1 to slot 6

Provides one IF interface. Supports the Hybrid microwave solution. Supports AM.

IFX2 Universal XPIC IF board

Slot 1 to slot 6

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

Supports the AM of the Hybrid microwave.

SL1D 2xSTM-1 interface board

Slot 1 to slot 6

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


Product Description


Issue 02 (2009-12-20)

Board Name

Full Spelling Valid Slot Description

EM6T 6 Port RJ45 Ethernet/Gigabit Ethernet Interface Board

Provides four FE electrical interfaces. Provides two GE electrical interfaces that are compatible with the FE electrical interface.

EM6F 4 Port RJ45 + 2 Port SFP Fast Ethernet/Gigabit Ethernet Interface Board

Slot 1 to slot 6

Provides four FE electrical interfaces. Uses the SFP module to provide two GE optical or electrical interfaces. The GE electrical interfaces are compatible with the FE electrical interfaces.

SP3S 16xE1 tributary board

Slot 1 to slot 6

Provides sixteen 75-ohm or 120-ohm E1 interfaces.

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-input and two-output external alarm interfaces.

TND1PIU Power board Slot 9 or slot 10

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.



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&Muplink

O&Mdownlink

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 into the 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 by the 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 is amplified in the low noise amplifier (LNA). Through the down-conversion, filtering, and amplification, 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 10 MHz 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.


Product Description


Issue 02 (2009-12-20)

3.3 Software Structure The OptiX RTN 950 software consists of the NMS software, IDU software, and ODU software.

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 the ODU.

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 in the 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 NE software and runs in the CPU of the system control, switching, and timing board.

3.3.3 ODU Software The ODU Software manages and controls the running status of the ODU. The ODU software controls 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 for transmitting the Hybrid microwave signals.



3-9

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-4signal

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-connect unit 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 or STM-1-based microwave frame payload area to add microwave frame overheads and pointers, 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 -48 V power.

Converts the analog IF signals into RF signals through up conversions and amplification.

Transmits the RF signals to the antenna through the waveguide.


Product Description


Issue 02 (2009-12-20)

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 through down conversions and amplification.

Combines the IF signals and the ODU O&M signals. Transmits the combined signals to the IF board through the 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 and multiplexes the VC-12 signals into VC-4 signals.

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

3 CST/CSH The timeslot cross-connect unit grooms VC-12 signals to the 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.

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



3-11

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

SP3S/SP3D

IFU2

IDU

E1

CSH

VC-4signal

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


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-connect unit of the CSH.

1

EM6T/EM6F Accesses FE signals. Performs decoding. Aligns frames, strips the preamble code, and processes the CRC check code.

Forwards Ethernet frames to the packet switching unit of the CSH.

2 CSH Based on the service configuration, the timeslot cross-connect unit grooms VC-12 signals to the VC-4 signals of the IFU2 board.

The packet switching unit processes Ethernet frames based on the configuration and the Layer 2 protocol, and then forwards the processed Ethernet frames to the IFU2 through the microwave port.


Product Description


Issue 02 (2009-12-20)


3 IFU2 Selects the proper modulation mode based on the current channel quality.

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

Demaps E1 service signals from the VC-12 signals. Maps the E1 service signals and the Ethernet frames into the 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 -48 V power.

Converts the analog IF signals into RF signals through up conversions and amplification.

Transmits the RF signals to the antenna through the waveguide.

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 through down conversions and amplification.

Combines the IF signals and the ODU O&M signals. Transmits the combined signals to the IF boards through the IF cable.



3-13


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 and maps 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 switching unit of the CSH board.

3 CSH Based on the data configuration, the timeslot cross-connect unit grooms VC-12 signals to the VC-4 signals of the SP3S or SP3D.

The packet switching unit processes Ethernet frames based on the configuration and the Layer 2 protocol, and then 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 the CRC check code.

Performs coding. Outputs FE signals.

OptiX RTN 950 Radio Transmission System Product Description 4 Networking


4-1

4 Networking

The 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 basic networking form, a hop of radio link is the basic networking unit.

Figure 4-1 shows the TDM microwave transmission solution wherein the chain networking is the 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-protection configuration, and an important link adopts the 1+1 protection configuration.

In the case of aggregation links, the SDH/PDH radio link with the appropriate air-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.

4 Networking OptiX RTN 950 Radio Transmission System

Product Description


Issue 02 (2009-12-20)

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 Networking In the TDM microwave transmission solution wherein the ring networking is the basic networking 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 is the basic networking form. In this solution, the SNCP is used to protect SDH/PDH microwave transmission 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 establish an 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 SNCP to protect the services on the ring, as shown in Figure 4-3.

OptiX RTN 950 Radio Transmission System Product Description 4 Networking


4-3

Figure 4-3 TDM microwave transmission solution (hybrid networking formed with the optical transmission 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 Networking In the Hybrid microwave transmission solution wherein the chain networking is the basic networking form, a hop of radio link is the basic networking unit.

Figure 4-4 shows the Hybrid microwave transmission solution wherein the chain networking is 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-protection configuration. An important link adopts the 1+1 protection configuration.

The Hybrid radio link of the corresponding air-interface capacity can be established according 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 between two 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.

4 Networking OptiX RTN 950 Radio Transmission System

Product Description


Issue 02 (2009-12-20)

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 the ERPS 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


STM-1+GE

BSCNodeB

RNC

OptiX RTN 950 Radio Transmission System Product Description 5 Network Management System


5-1

5 Network Management System

This 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

iManagerU2000

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

5 Network Management System OptiX RTN 950 Radio Transmission 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

OptiX RTN 950 Radio Transmission System 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 U2000 server 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 management function 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

OptiX RTN 950 Radio Transmission System Product Description 6 Performance


6-1

6 Performance

6.1 RF Performance 6.1.1 Microwave Work Modes

SDH/PDH Microwave Work Modes

Table 6-1 SDH/PDH microwave work modes (IF1 board)

Service Capacity Modulation Mode Channel Spacing (MHz)

4xE1 QPSK 7

4xE1 16QAM 3.5

8xE1 QPSK 14 (13.75)

8xE1 16QAM 7

16xE1 QPSK 28 (27.5)

16xE1 16QAM 14 (13.75)

22xE1 32QAM 14 (13.75)

26xE1 64QAM 14 (13.75)

35xE1 16QAM 28 (27.5)

44xE1 32QAM 28 (27.5)

53xE1 64QAM 28 (27.5)

STM-1 128QAM 28 (27.5)

The channel spacings 13.75 MHz and 27.5 MHz are applied to the 18 GHz frequency band. The channel spacings listed in the table are the minimum channel spacings supported by the product.

The channel spacings larger than the values are also supported.

6 Performance OptiX RTN 950 Radio Transmission System

Product Description


Issue 02 (2009-12-20)

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

Hybrid Microwave Work Modes

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

Channel Spacing (MHz)

Modulation Mode

Service Capacity (Mbit/s)

Maximum Number of E1s in Services

Ethernet Throughput (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 20 41 to 48

28 (27.5) 16QAM 84 40 84 to 97

28 (27.5) 32QAM 105 50 108 to 125

28 (27.5) 64QAM 133 64 130 to 150

28 (27.5) 128QAM 158 75 160 to 180

28 (27.5) 256QAM 183 75 180 to 210

56 (55) QPSK 84 40 84 to 97

56 (55) 16QAM 168 75 170 to 190

56 (55) 32QAM 208 75 210 to 240

56 (55) 64QAM 265 75 260 to 310

56 (55) 128QAM 313 75 310 to 360

56 (55) 256QAM 363 75 360 to 420



6-3

Table 6-3 Hybrid microwave work modes (IFX2 board)

Channel Spacing (MHz)

Modulation Mode

Service Capacity (Mbit/s)

Maximum Number of E1s in Services

Ethernet Throughput (Mbit/s)

28 (27.5) QPSK 42 19 41 to 48

28 (27.5) 16QAM 84 40 84 to 97

28 (27.5) 32QAM 104 49 103 to 120

28 (27.5) 64QAM 132 63 130 to 150

28 (27.5) 128QAM 159 75 160 to 180

28 (27.5) 256QAM 182 75 180 to 210

56 (55) QPSK 83 39 84 to 97

56 (55) 16QAM 166 75 170 to 190

56 (55) 32QAM 213 75 215 to 245

56 (55) 64QAM 262 75 260 to 305

56 (55) 128QAM 311 75 310 to 360

56 (55) 256QAM 359 75 360 to 410

The channel spacings 13.75 MHz, 27.5 MHz, and 55 MHz are applied to the 18 GHz frequency

band. The channel spacings listed in the table are the minimum channel spacings supported by the product.

The channel spacings larger than the values are also supported. E1 services need to occupy the corresponding bandwidth of the service capacity. The bandwidth

remaining after the E1 service capacity is subtracted from the service capacity can be provided for Ethernet services.

The Hybrid radio link of the OptiX RTN 950 supports all microwave modulation mode. If the Hybrid radio link supports the 56 MHz microwave modulation mode, it must use the high power ODU.

6.1.2 Receiver Sensitivity The receiver sensitivity reflects the anti-fading capability of the microwave equipment.

For a guaranteed value, remove 3 dB from the typical value.


Product Description


Issue 02 (2009-12-20)

SDH/PDH Microwave

Table 6-4 Typical receiver sensitivity values (i) of the SDH/PDH microwave

Performance

4xE1 8xE1 16xE1

Item

QPSK 16QAM QPSK 16QAM QPSK 16QAM

RSL@ BER = 10-6 (unit: dBm)

@6 GHz -91.5 -87.5 -88.5 -84.5 -85.5 -81.5

@7 GHz -91.5 -87.5 -88.5 -84.5 -85.5 -81.5

@8 GHz -91.5 -87.5 -88.5 -84.5 -85.5 -81.5

@11 GHz -91.0 -87.0 -88.0 -84.0 -85.0 -81.0

@13 GHz -91.0 -87.0 -88.0 -84.0 -85.0 -81.0

@15 GHz -91.0 -87.0 -88.0 -84.0 -85.0 -81.0

@18 GHz -91.0 -87.0 -88.0 -84.0 -85.0 -81.0

@23 GHz -90.5 -86.5 -87.5 -83.5 -84.5 -80.5

@26 GHz -90.0 -86.0 -87.0 -83.0 -84.0 -80.0

@32 GHz -89.0 -85.0 -86.0 -82.0 -83.0 -79.0

@38 GHz -88.5 -84.5 -85.5 -81.5 -82.5 -78.5

Table 6-5 Typical receiver sensitivity values (ii) of the SDH/PDH microwave

Performance

22xE1 26xE1 35xE1 44xE1 53xE1 STM-1

Item

32QAM 64QAM 16QAM 32QAM 64QAM 128QAM

RSL@ BER = 10-6 (unit: dBm)

@6 GHz -80.5 -76.5 -79.0 -77.5 -73.5 -70.5

@7 GHz -80.5 -76.5 -79.0 -77.5 -73.5 -70.5

@8 GHz -80.5 -76.5 -79.0 -77.5 -73.5 -70.5

@11 GHz -80.0 -76.0 -78.5 -77.0 -73.0 -70.0

@13 GHz -80.0 -76.0 -78.5 -77.0 -73.0 -70.0

@15 GHz -80.0 -76.0 -78.5 -77.0 -73.0 -70.0

@18 GHz -80.0 -76.0 -78.5 -77.0 -73.0 -70.0

@23 GHz -79.5 -75.5 -78.0 -76.5 -72.5 -69.5



6-5

Performance

22xE1 26xE1 35xE1 44xE1 53xE1 STM-1

Item

32QAM 64QAM 16QAM 32QAM 64QAM 128QAM

@26 GHz -79.0 -75.0 -77.5 -76.0 -72.0 -69.0

@32 GHz -78.0 -74.0 -76.5 -75.0 -71.0 -68.0

@38 GHz -77.5 -73.5 -76.0 -74.5 -70.5 -67.5

Hybrid Microwave

The 6 GHz ODU does not support the modulation mode of 256QAM and the channel spacing of 56 MHz. The receiver sensitivity is not available (NA).

Table 6-6 Typical values of the receiver sensitivity (i) of the Hybrid microwave

Performance (Channel Spacing: 7 MHz)

Item QPSK 16QAM 32QAM 64QAM 128QAM 256QAM

RSL@ BER=10-66 (dBm)

@6 GHz -92.5 -86.5 -82.5 -79.5 -76.5 NA

@7 GHz -92.5 -86.5 -82.5 -79.5 -76.5 -73.5

@8 GHz -92.5 -86.5 -82.5 -79.5 -76.5 -73.5

@11 GHz -92 -86 -82 -79 -76 -73

@13 GHz -92 -86 -82 -79 -76 -73

@15 GHz -92 -86 -82 -79 -76 -73

@18 GHz -92 -86 -82 -79 -76 -73

@23 GHz -91.5 -85.5 -81.5 -78.5 -75.5 -72.5

@26 GHz -91 -85 -81 -78 -75 -72

@32 GHz -90 -84 -80 -77 -74 -71

@38 GHz -89.5 -83.5 -79.5 -76.5 -73.5 -70.5

Table 6-7 Typical values of the receiver sensitivity (ii) of the Hybrid microwave



RSL@ BER=10-6 (dBm)


Product Description


Issue 02 (2009-12-20)



@6 GHz -90.5 -83.5 -79.5 -76.5 -73.5 NA

@7 GHz -90.5 -83.5 -79.5 -76.5 -73.5 -70.5

@8 GHz -90.5 -83.5 -79.5 -76.5 -73.5 -70.5

@11 GHz -90 -83 -79 -76 -73 -70

@13 GHz -90 -83 -79 -76 -73 -70

@15 GHz -90 -83 -79 -76 -73 -70

@18 GHz -90 -83 -79 -76 -73 -70

@23 GHz -89.5 -82.5 -78.5 -75.5 -72.5 -69.5

@26 GHz -89 -82 -78 -75 -72 -69

@32 GHz -88 -81 -77 -74 -71 -68

@38 GHz -87.5 -80.5 -76.5 -73.5 -70.5 -67.5

Table 6-8 Typical values of the receiver sensitivity (iii) of the Hybrid microwave



RSL@ BER=10-6 (dBm)

@6 GHz -87.5 -80.5 -76.5 -73.5 -70.5 NA

@7 GHz -87.5 -80.5 -76.5 -73.5 -70.5 -67.5

@8 GHz -87.5 -80.5 -76.5 -73.5 -70.5 -67.5

@11 GHz -87 -80 -76 -73 -70 -67

@13 GHz -87 -80 -76 -73 -70 -67

@15 GHz -87 -80 -76 -73 -70 -67

@18 GHz -87 -80 -76 -73 -70 -67

@23 GHz -86.5 -79.5 -75.5 -72.5 -69.5 -66.5

@26 GHz -86 -79 -75 -72 -69 -66

@32 GHz -85 -78 -74 -71 -68 -65

@38 GHz -84.5 -77.5 -73.5 -70.5 -67.5 -64.5



6-7

Table 6-9 Typical values of the receiver sensitivity (iv) of the Hybrid microwave



RSL@ BER=10-6 (dBm)

@6 GHz NA NA NA NA NA NA

@7 GHz -84.5 -77.5 -73.5 -70.5 -67.5 -64.5

@8 GHz -84.5 -77.5 -73.5 -70.5 -67.5 -64.5

@11 GHz -84 -77 -73 -70 -67 -64

@13 GHz -84 -77 -73 -70 -67 -64

@15 GHz -84 -77 -73 -70 -67 -64

@18 GHz -84 -77 -73 -70 -67 -64

@23 GHz -83.5 -76.5 -72.5 -69.5 -66.5 -63.5

@26 GHz -83 -76 -72 -69 -66 -63

@32 GHz -82 -75 -71 -68 -65 -62

@38 GHz -81.5 -74.5 -70.5 -67.5 -64.5 -61.5

6.1.3 Distortion Sensitivity The distortion sensitivity reflects the anti-multipath fading capability of the OptiX RTN 950.

The notch depth of the OptiX RTN 950 meets the requirements described in ETSI EN 302217-2-2. Table 6-10 describes the anti-multipath fading capability of the OptiX RTN 950 in STM-1/128QAM microwave working modes.

Table 6-10 Anti-multipath fading capability

Item Performance

STM-1/128QAM W-curve See Figure 6-1

STM-1/128QAM dispersion fading margin 51 dB


Product Description


Issue 02 (2009-12-20)

Figure 6-1 W-curve

6.1.4 ODU Performance The performance of the ODU includes the modulation mode, transceiver performance and frequency information. For details of the specifications, see the annex.

6.1.5 IF Performance The IF performance includes the performance of the IF signal and the performance of the ODU O&M signal.

Table 6-11 IF performance

Item Performance

IF signal

Transmit frequency of the IF board (MHz)

350

Receive frequency of the IF board (MHz)

140

Impedance (ohm) 50

ODU O&M signal

Modulation mode ASK

Transmit frequency of the IF board (MHz)

5.5

Receive frequency of the IF board (MHz)

10



6-9

6.1.6 Baseband Signal Processing Performance of the Modem The baseband signal processing performance of the modem indicates the FEC coding scheme and the performance of the baseband time domain adaptive equalizer.

Table 6-12 Baseband signal processing performance of the modem

Item Performance

Encoding mode Reed-Solomon (RS) encoding for PDH signals Trellis-coded modulation (TCM) and RS two-level encoding for SDH signals

Low-density parity check code (LDPC) encoding for Hybrid microwave.

Adaptive time-domain equalizer for baseband signals

Supported.

6.2 Interface Performance This section describes the technical specifications of various services and auxiliary interfaces.

6.2.1 SDH Optical Interface Performance The performance of the SDH optical interface is compliant with ITU-T G.957/G.825.

STM-1 Optical Interface Performance The performance of the STM-1 optical interface is compliant with ITU-T G.957/G.825. The following table provides the primary performance.

Table 6-13 STM-1 optical interface performance

Item Performance

Nominal bit rate (kbit/s) 155520

Classification code Ie-1 S-1.1 L-1.1 L-1.2

Fiber type Multi-mode fiber

Single-mode fiber

Single-mode fiber

Single-mode fiber

Transmission distance (km)

2 15 40 80

Operating wavelength (nm)

1270 to 1380 1261 to 1360 1263 to 1360 1480 to 1580

Mean launched power (dBm)

-19 to -14 -15 to -8 -5 to 0 -5 to 0


Product Description


Issue 02 (2009-12-20)

Item Performance

Receiver minimum sensitivity (dBm)

-30 -28 -34 -34

Minimum overload (dBm) -14 -8 -10 -10

Minimum extinction ratio (dB)

10 8.2 10 10

The OptiX RTN 950 uses SFP modules for providing optical interfaces. You can use different types of SFP modules to provide optical interfaces with different classification codes and transmission distances.

6.2.2 E1 Interface Performance The performance of the E1 interface is compliant with ITU-T G.703/G.823.

E1 Interface Performance

Table 6-14 E1 interface performance

Item Performance


Code pattern HDB3

Wire pair in each transmission direction

One coaxial wire pair One symmetrical wire pair

Impedance (ohm) 75 120

6.2.3 Ethernet Interface Performance The performance of the Ethernet interface is compliant with IEEE 802.3.

GE Optical Interface Performance The performance of the GE optical interface is compliant with IEEE 802.3. The following table provides the primary performance.

Table 6-15 Performance of the GE optical interface

Item Performance


Classification code 1000Base-SX 1000Base-LX

Fiber type Multiple-mode optical fiber

Single-mode optical fiber



6-11

Item Performance

Transmission distance (km) 0.5 10

Operating wavelength (nm) 770 to 860 1270 to 1355

Mean launched power (dBm) -9.5 to 0 -9 to -3

Receiver minimum sensitivity (dBm) -17 -19

Minimum overload (dBm) 0 -3

Minimum extinction ratio (dB) 9 9

The OptiX RTN 950 uses SFP modules for providing GE optical interfaces. You can use different types of SFP modules to provide GE optical interfaces with different classification codes and transmission distances.

GE electric Interface Performance The GE electric interface is compliant with IEEE 802.3. The following table provides the primary performance.

Table 6-16 GE electric interface performance

Item Performance

Nominal bit rate (Mbit/s) 10 (10BASE-T) 100 (100BASE-TX) 1000 (1000BASE-T)

Code pattern Manchester encoding signal (10BASE-T) MLT-3 encoding signal (100BASE-TX) 4D-PAM5 encoding signal (1000BASE-T)

Interface type RJ-45

FE electric Interface Performance The 10/100BASE-T(X) interface is compliant with IEEE 802.3. The following table provides the primary performance.

Table 6-17 FE electric interface performance

Item Performance

Nominal bit rate (Mbit/s) 10 (10BASE-T) 100 (100BASE-TX)


Product Description


Issue 02 (2009-12-20)

Item Performance

Code pattern Manchester encoding signal (10BASE-T) MLT-3 encoding signal (100BASE-TX)

Interface type RJ-45

6.2.4 Auxiliary Interface Performance The auxiliary interface performance includes the performance of the orderwire interface, synchronous data interface, and asynchronous data interface.

Orderwire Interface Performance

Table 6-18 Orderwire interface performance

Item Performance

Transmission path Uses the E1 and E2 bytes in the SDH overhead or the Huawei-defined byte in the overhead of the microwave frame.

Orderwire type Addressing call

Wire pair in each transmission direction

One symmetrical wire pair

Impedance (ohm) 600

The OptiX RTN equipment also supports the orderwire group call function. For example, when an OptiX RTN equipment calls the number of 888, the orderwire group call number, all the OptiX RTN equipment orderwire phones in the orderwire subnet ring until a phone is answered. Then, a point-to-point orderwire phone call is established.

Synchronous Data Interface Performance

Table 6-19 Synchronous data interface performance

Item Performance

Transmission path Uses the F1 byte in the SDH overhead or the Huawei-defined byte in the overhead of the microwave frame.


Interface type Codirectional

Interface characteristics Meets the ITU-T G.703 standard.



6-13

Asynchronous Data Interface

Table 6-20 Asynchronous data interface performance

Item Performance

Transmission path Uses the user-defined byte of the SDH overhead or the Huawei-defined byte in the overhead of the microwave frame.

Nominal bit rate (kbit/s) ≤ 19.2

Interface characteristics Meets the RS-232 standard.

Wayside Service Interface Performance

Table 6-21 Wayside service interface performance

Item Performance

Transmission path Uses the Huawei-defined bytes in the overhead of the microwave frame.


Impedance (ohm) 120

6.3 Clock Timing and Synchronization Performance The clock timing performance and synchronization performance of the product meet relevant ITU-T recommendations.

Table 6-22 Clock timing and synchronization performance

Item Performance

External synchronization source

2048 kbit/s (compliant with ITU-T G.703 §9), or 2048 kHz (compliant with ITU-T G.703 §13)

Frequency accuracy

Pull-in, hold-in, and pull-out ranges

Noise generation

Noise tolerance

Noise transfer

Compliant with ITU-T G.813


Product Description


Issue 02 (2009-12-20)

Item Performance

Transient response and holdover performance

6.4 Integrated System Performance Integrated system performance includes the dimensions, power supply, EMC, lightning protection, safety, and environment.

Dimensions

Table 6-23 Dimensions

Component Dimensions

IDU 442 mm (width) x 220 mm (depth) x 88 mm (height)

ODU < 280 mm (width) x 92 mm (depth) x 280 mm (height)

Power Supply

Table 6-24 Power Supply

Component Performance

IDU Compliant with ETSI EN300 132-2 Supporting two -48 V/-60 V (-38.4 V to -72 V) DC power inputs (mutual backup)

Supporting the backup of the 1+1 3.3 V power units.

ODU Compliant with ETSI EN300 132-2 Supporting one -48 V (-38.4 V to -72 V) DC power input that is provided by the IDU

Electromagnetic Compatibility Passes CE authentication. Compliant with ETSI EN 301 489-1. Compliant with ETSI EN 301 489-4. Compliant with CISPR 22. Compliant with EN 55022.



6-15

Lightning Protection Compliant with ITU-T K.27. Compliant with ETSI EN 300 253.

Safety Passes CE authentication. Compliant with ETSI EN 60215. Compliant with ETSI EN 60950. Compliant with IEC 60825.

Environment The IDU is a unit used in a place that has weather protection and where the temperature can be controlled. The ODU is an outdoor unit.

Table 6-25 Environment performance

Component Item

IDU ODU

Operation Compliant with ETSI EN 300 019-1-3 class 3.2

Compliant with ETSI EN 300 019-1-4 class 4.1

Transportation Compliant with ETSI EN 300 019-1-2 class 2.3

Major reference standards

Storage Compliant with ETSI EN 300 019-1-1 class 1.2

Operation -5°C to +55°C -35°C to +55°C Air temperature

Transportation and storage

-40°C to +70°C

Relative humidity 5% to 95% 5% to 100%

Noise < 7.2 bel, compliant with ETSI EN 300 753 class 3.2 attended

-

Earthquake Compliant with Bellcore GR-63-CORE ZONE 4

Mechanical stress Compliant with ETSI EN 300 019

OptiX RTN 950 Radio Transmission System Product Description A Glossary


A-1

A Glossary

Terms are listed in an alphabetical order.

Number

1U The standard electronics industries association (EIA) rack unit (44 mm/1.75 in.)

1+1 protection A radio link protection system composed of one working channel and one protection channel. Two ODUs and two IF boards are used at each end of a radio link.

A

Adaptive modulation

A technology that is used to automatically adjust the modulation mode based on the channel quality. When the channel quality is favorable, the equipment adopts a high-efficiency modulation mode to improve the transmission efficiency and the spectrum utilization of the system. When the channel quality is degraded, the equipment adopts the low-efficiency modulation mode to improve the anti-interference capability of the link that carries high-priority services.

Add/Drop multiplexer

A network element that adds/drops the PDH signal or STM-x (x < N) signal to/from the STM-N signal on the SDH transport network.

Adjacent channel alternate polarization

A channel configuration method, which uses two adjacent channels (a horizontal polarization wave and a vertical polarization wave) to transmit two signals.

Automatic transmit power control

A method of adjusting the transmit power based on fading of the transmit signal detected at the receiver.

C

Co-channel dual polarization

A channel configuration method, which uses a horizontal polarization wave and a vertical polarization wave to transmit two signals. The co-channel dual polarization is twice the transmission capacity of the single polarization.

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Cross polarization interference cancellation

A technology used in the case of the co-channel dual polarization (CCDP) to eliminate the cross-connect interference between two polarization waves in the CCDP.

D

DC-C A power system, in which the BGND of the DC return conductor is short-circuited with the PGND on the output side of the power supply cabinet and also on the line between the output of the power supply cabinet and the electric equipment.

DC-I A power system, in which the BGND of the DC return conductor is short-circuited with the PGND on the output side of the power supply cabinet and is isolated from the PGND on the line between the output of the power supply cabinet and the electric equipment.

Digital modulation

A digital modulation controls the changes in amplitude, phase, and frequency of the carrier based on the changes in the baseband digital signal. In this manner, the information can be transmitted by the carrier.

Dual-polarized antenna

An antenna intended to radiate or receive simultaneously two independent radio waves orthogonally polarized.

E

Equalization A method of avoiding selective fading of frequencies. Equalization can compensate for the changes of amplitude frequency caused by frequency selective fading.

Bit error A symptom that the quality of the transmitted information is degraded because some bits of a data stream are errored after being received, decided, and regenerated.

F

Forward error correction

A bit error correction technology that adds the correction information to the payload at the transmit end. Based on the correction information, the bit errors generated during transmission are corrected at the receive end.

Frequency diversity

A diversity scheme that enables two or more microwave frequencies with a certain frequency interval are used to transmit/receive the same signal and selection is then performed between the two signals to ease the impact of fading.

G

Gateway network element

A network element that is used for communication between the NE application layer and the NM application layer.



A-3

H

Hybrid radio The hybrid transmission of Native E1 and Native Ethernet signals. Hybrid radio supports the AM function.

I

Indoor Unit The indoor unit of the split-structured radio equipment. It implements accessing, multiplexing/demultiplexing, and IF processing for services.

Internet Group Management Protocol

The protocol for managing the membership of Internet Protocol multicast groups among the TCP/IP protocols. It is used by IP hosts and adjacent multicast routers to establish and maintain multicast group memberships.

Intermediate frequency

The transitional frequency between the frequencies of a modulated signal and an RF signal.

IGMP snooping

A multicast constraint mechanism running on a layer 2 device. This protocol manages and controls the multicast group by listening to and analyze the Internet Group Management Protocol (IGMP) packet between hosts and layer 3 devices. In this manner, the spread of the multicast data on layer 2 network can be prevented efficiently.

L

Layer 2 switch A data forwarding method. In LAN, a network bridge or 802.3 Ethernet switch transmits and distributes packet data based on the MAC address. Since the MAC address is the second layer of the OSI model, this data forwarding method is called layer 2 switch.

LCT The local maintenance terminal of a transport network, which is located on the NE management layer of the transport network.

Link aggregation group

An aggregation that allows one or more links to be aggregated together to form a link aggregation group so that a MAC client can treat the link aggregation group as if it were a single link.

Trail A type of transport entity, mainly engaged in transferring signals from the input of the trail source to the output of the trail sink, and monitoring the integrality of the transferred signals.

M

Multiplex section protection

The function performed to provide capability for switching a signal between and including two MST functions, from a "working" to a "protection" channel.

Multiple Spanning Tree Protocol

MSTP is an evolution of the Spanning Tree Protocol and the Rapid Spanning Tree Protocol, and was introduced in IEEE 802.1s as amendment to 802.1Q, 1998 edition. Standard IEEE 802.1Q-2003 now includes MSTP.

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N

N+1 protection A microwave link protection system that employs N working channels and one protection channel.

Network element

A network element (NE) contains both the hardware and the software running on it. One NE is at least equipped with one system control board which manages and monitors the entire network element. The NE software runs on the system control Unit.

Network management system

The network management system in charge of the operation, administration, and maintenance of a network.

Non-gateway network element

A network element whose communication with the NM application layer must be transferred by the gateway network element application layer.

O

Orderwire A channel that provides voice communication between operation engineers or maintenance engineers of different stations.

Outdoor unit The outdoor unit of the split-structured radio equipment. It implements frequency conversion and amplification for RF signals.

P

Plesiochronous Digital Hierarchy

A multiplexing scheme of bit stuffing and byte interleaving. It multiplexes the minimum rate 64 kit/s into the 2 Mbit/s, 34 Mbit/s, 140 Mbit/s, and 565 Mbit/s rates.

Polarization A kind of electromagnetic wave, the direction of whose electric field vector is fixed or rotates regularly. Specifically, if the electric field vector of the electromagnetic wave is perpendicular to the plane of horizon, this electromagnetic wave is called vertically polarized wave; if the electric field vector of the electromagnetic wave is parallel to the plane of horizon, this electromagnetic wave is called horizontal polarized wave; if the tip of the electric field vector, at a fixed point in space, describes a circle, this electromagnetic wave is called circularly polarized wave.

Q

QinQ A layer 2 tunnel protocol based on IEEE 802.1Q encapsulation. It encapsulates the tag of the user's private virtual local area network (VLAN) into the tag of the public VLAN. The packet carries two layers of tags to travel through the backbone network of the carrier. In this manner, the layer 2 virtual private network (VPN) is provided for the user.



A-5

R

Rapid Spanning Tree Protocol

An evolution of the Spanning Tree Protocol, providing for faster spanning tree convergence after a topology change. The RSTP protocol is backward compatible with the STP protocol.

S

Single polarized antenna

An antenna that can transmit only one channel of polarized electromagnetic waves.

Space diversity A diversity scheme that enables two or more antennas separated by a specific distance to transmit/receive the same signal and selection is then performed between the two signals to ease the impact of fading. Currently, only receive SD is used.

Spanning Tree Protocol

An algorithm defined in the IEEE 802.1D. It configures the active topology of a Bridged LAN of arbitrary topology into a single spanning tree.

Subnet A logical entity in the transmission network, which comprises a group of network management objects. A subnet can contain NEs and other subnets.

Subnetwork connection protection

A function, which allows a working subnetwork connection to be replaced by a protection subnetwork connection if the working subnetwork connection fails, or if its performance falls below a required level.

Synchronous Digital Hierarchy

A hierarchical set of synchronous digital transport, multiplexing, and cross-connect structures, which is standardized for the transport of suitably adapted payloads over physical transmission networks.

U

U2000 A unified network management system developed by Huawei. It can support all the NE level and network level management functions, and can manage the transport network, access network, and MAN Ethernet in a unified manner.

V

Virtual LAN An end-to-end logical network that can travel through several network segments or networks by using the network management software based on the switch LAN. The IEEE 802.1Q is the main standard for the virtual LAN.

OptiX RTN 950 Radio Transmission System Product Description B Acronyms and Abbreviations


B-1

B Acronyms and Abbreviations

Acronyms and abbreviations are listed in alphabetical order.

A

APS Automatic Protection Switching

ASK Amplitude Shift Keying

ATPC Automatic Transmit Power Control

B

BER Bit Error Rate

BSC Base Station Controller

C

CCDP Co-Channel Dual Polarization

CF Compact Flash card

CIST Common and Internal Spanning Tree

CoS Class of Service

CPU Central Processing Unit

CRC Cyclic Redundancy Check

C-VLAN Customer VLAN

D

DC Direct Current

DCC Data Communications Channel

DCN Data Communication Network

DSCP Differentiated Services Code Point

B Acronyms and Abbreviations OptiX RTN 950 Radio Transmission System

Product Description

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Issue 02 (2009-12-20)

E

ECC Embedded Control Channel

E-LAN Ethernet-LAN

EMC Electromagnetic Compatibility

EMI Electromagnetic Interference

ERPS Ethernet Ring Protection Switching

ETSI European Telecommunications Standards Institute

F

FCS Frame Check Sequence

FD Frequency Diversity

FE Fast Ethernet

FEC Forward Error Correction

G

GE Gigabit Ethernet

GUI Graphical User Interface

H

HDB3 High Density Bipolar Code 3

HSB Hot Standby

HSM Hitless Switch Mode

I

ICMP Internet Control Message Protocol

IDU Indoor Unit

IEC International Electrotechnical Commission

IEEE Institute of Electrical and Electronics Engineers

IETF The Internet Engineering Task Force

IF Intermediate Frequency

IGMP Internet Group Management Protocol

IP Internet Protocol



B-3

IPv6 Internet Protocol version 6

ISO International Standard Organization

ITU-T International Telecommunication Union - Telecommunication Standardization Sector

L

LAN Local Area Network

LAG Link Aggregation Group

LCT Generation-Local Craft Terminal

LDPC Low-Density Parity Check code

LMSP Linear Multiplex Section Protection

LPT Link State Pass Through

M

MADM Multi Add-Drop Multiplexer

MBS Maximum Burst Size

MSP Multiplex Section Protection

MSTP Multiple Spanning Tree Protocol

MTBF Mean Time Between Failure

MTTR Mean Time To Repair

N

NE Network Element

NMS Network Management System

O

OAM Operations, Administration and Maintenance

ODU Outdoor Unit

P

PDH Plesiochronous Digital Hierarchy

PRBS Pseudo-Random Binary Sequence

B Acronyms and Abbreviations OptiX RTN 950 Radio Transmission System

Product Description

B-4 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

Issue 02 (2009-12-20)

Q

QinQ 802.1Q in 802.1Q

QoS Quality of Service

QPSK Quadrature Phase Shift Keying

R

RF Radio Frequency

RFC Request For Comment

RMON Remote Monitoring

RNC Radio Network Controller

RS Reed-Solomon encoding

RSL Received Signal Level

RSSI Received Signal Strength Indicator

RSTP Rapid Spanning Tree Protocol

RTN Radio Transmission Node

S

SD Space Diversity

SDH Synchronous Digital Hierarchy

SFP Small Form-Factor Pluggable

SNC SubNetwork Connection

SNCP Sub-Network Connection Protection

SNMP Simple Network Management Protocol

SNR Signal-to-Noise Ratio

SP Strict Priority

SSM Synchronization Status Message

STM Synchronous Transport Module

STM-1 SDH Transport Module -1

STM-1e STM-1 Electrical Interface

STM-1o STM-1 Optical Interface

STM-N SDH Transport Module -N

STP Spanning Tree Protocol

SVL Shared VLAN Learning



B-5

T

TCP Transfer Control Protocol

TDM Time Division Multiplex

TMN Telecommunication Management Network

V

VC Virtual Container

VC-12 Virtual Container -12



VCG Virtual Concatenation Group

VLAN Virtual LAN

VoIP Voice over IP

VPN Virtual Private Network

W

WAN Wide Area Network

WRR Weighted Round Robin

WTR Wait to Restore Time

X

XPIC Cross-polarization Interference Cancellation

RTN 950 Product Description(V100R002C00_02)-20091220

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