ubro solution description(v200r001_02,03)

uBro Solution V200R001,03

Description Issue 02

Date 2009-08-14

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

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any assistance, please contact our local office or company headquarters.

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]

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

uBro Solution Description Contents

Issue 02 (2009-08-14) Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd.

i

Contents

About This Document.....................................................................................................................1

1 Description of the uBro Solution............................................................................................1-1 1.1 Background ...................................................................................................................................................1-2 1.2 Huawei uBro Solution...................................................................................................................................1-2 1.3 Benefits .........................................................................................................................................................1-3

2 Solution Architecture ................................................................................................................2-1 2.1 Networking Architecture ...............................................................................................................................2-2 2.2 Hardware Configurations ..............................................................................................................................2-3

2.2.1 Hardware Configurations for Huawei uBro Solution (Triple-cabinet).................................................2-3 2.2.2 Hardware Configurations for Huawei uBro Solution (Single-cabinet) ................................................2-7

2.3 Major NEs .....................................................................................................................................................2-8 2.3.1 AP ........................................................................................................................................................2-8 2.3.2 AG........................................................................................................................................................2-8 2.3.3 Clock Server.........................................................................................................................................2-8 2.3.4 AHR .....................................................................................................................................................2-8 2.3.5 AP manager ..........................................................................................................................................2-9 2.3.6 SeGW...................................................................................................................................................2-9 2.3.7 M2000..................................................................................................................................................2-9 2.3.8 AAA.....................................................................................................................................................2-9

2.4 Technical Features.........................................................................................................................................2-9 2.4.1 Automatic Network Planning And Optimizing ....................................................................................2-9 2.4.2 Interference Detection........................................................................................................................2-10 2.4.3 Location Detection (Optional) ...........................................................................................................2-10 2.4.4 Location Indication ............................................................................................................................2-11 2.4.5 Clock Synchronization.......................................................................................................................2-11 2.4.6 Access Control ...................................................................................................................................2-11 2.4.7 Cell Reselection .................................................................................................................................2-12 2.4.8 Cell Handover ....................................................................................................................................2-12 2.4.9 HSPA..................................................................................................................................................2-12 2.4.10 Security Authentication....................................................................................................................2-13 2.4.11 Differential Charging (Optional)......................................................................................................2-13

Contents uBro Solution

Description

ii Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd.

Issue 02 (2009-08-14)

2.4.12 Performance Management of the AP (Optional) ..............................................................................2-13 2.4.13 Double-IPSec (Optional)..................................................................................................................2-14 2.4.14 Emergency Call Service...................................................................................................................2-14 2.4.15 Selection of the Optimal Core Network...........................................................................................2-14 2.4.16 AG Supporting Iu-Flex.....................................................................................................................2-14 2.4.17 End-to-End Security Solution Between the AP and the AP Manager (Optional).............................2-15 2.4.18 Flow Control of the IMSI Query Requests ......................................................................................2-15 2.4.19 Dynamic Jitter Prevention................................................................................................................2-15 2.4.20 Compensation for Packet Loss in Voice Services ............................................................................2-15 2.4.21 Alarm for the Disconnection of AP (Optional).................................................................................2-16 2.4.22 Daylight Saving Time ......................................................................................................................2-16 2.4.23 Allocation of Cell IDs ......................................................................................................................2-16 2.4.24 AP Type............................................................................................................................................2-16 2.4.25 AP Name ..........................................................................................................................................2-16 2.4.26 Separation of OM and Service (Optional)........................................................................................2-16

2.5 System Interface..........................................................................................................................................2-17 2.5.1 Overview of Interfaces.......................................................................................................................2-17 2.5.2 eIu Interface .......................................................................................................................................2-17 2.5.3 Ab Interface........................................................................................................................................2-19 2.5.4 Ae Interface........................................................................................................................................2-19 2.5.5 Hb Interface .......................................................................................................................................2-20 2.5.6 Hg Interface .......................................................................................................................................2-20 2.5.7 Ho Interface .......................................................................................................................................2-21 2.5.8 Ac Interface........................................................................................................................................2-21 2.5.9 RADIUS Interface .............................................................................................................................2-22 2.5.10 D' Interface.......................................................................................................................................2-22 2.5.11 Diameter Interface............................................................................................................................2-22 2.5.12 Uu Interface .....................................................................................................................................2-22 2.5.13 Iu Interface .......................................................................................................................................2-22

3 Networking Solution.................................................................................................................3-1 3.1 Service Networking.......................................................................................................................................3-2 3.2 Access Networking........................................................................................................................................3-3

3.2.1 xDSL Access Networking ....................................................................................................................3-3 3.2.2 Ethernet Access Networking................................................................................................................3-4

3.3 Clock Server Deployment Scheme................................................................................................................3-5 3.3.1 Networking with the Clock Server Deployed in the uBro Core Network............................................3-5 3.3.2 Networking with the Clock Server Deployed in the Backbone Network.............................................3-5 3.3.3 Networking with the Clock Server Deployed in the Access Network .................................................3-6

4 Security Solution........................................................................................................................4-1 4.1 Overview of the Security Solution ................................................................................................................4-2 4.2 Network Equipment Security ........................................................................................................................4-2

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4.3 Network Security ..........................................................................................................................................4-3 4.3.1 Security Domain Partition....................................................................................................................4-3 4.3.2 Border Protection .................................................................................................................................4-3 4.3.3 Network Anti-Attack............................................................................................................................4-3 4.3.4 Network Access Authentication ...........................................................................................................4-3 4.3.5 Transmission Security ..........................................................................................................................4-4

4.4 O&M Security...............................................................................................................................................4-4

5 QoS Policies ................................................................................................................................5-1 5.1 General QoS Policies ....................................................................................................................................5-2 5.2 QoS Policies of the AP Air Interface .............................................................................................................5-2

5.2.1 QoS Assurance Algorithm at Resources Congestion ...........................................................................5-2 5.2.2 QoS Assurance Algorithm of Traffic Volume and Link Quality ..........................................................5-3

5.3 Transmission QoS Scheme............................................................................................................................5-4 5.3.1 Congestion Detection Algorithm..........................................................................................................5-4 5.3.2 Transmission Packet Multiplexing and Header Compression..............................................................5-4 5.3.3 Transmission Resources Based Access Algorithm...............................................................................5-5 5.3.4 Blind Handover....................................................................................................................................5-5

5.4 AG QoS Scheme ...........................................................................................................................................5-5 5.4.1 AG Access Control...............................................................................................................................5-5 5.4.2 QoS Queue Management .....................................................................................................................5-5 5.4.3 DiffServ Function ................................................................................................................................5-6 5.4.4 QoS Mapping Function........................................................................................................................5-6 5.4.5 Traffic Regulating ................................................................................................................................5-6 5.4.6 Prevention of Time Delay and Jittering ...............................................................................................5-6

6 Operation and Maintenance ....................................................................................................6-1 6.1 O&M System ................................................................................................................................................6-2

6.1.1 Solution to Terminal Equipment Management ....................................................................................6-2 6.1.2 Solution to Central Office Equipment Management............................................................................6-2

6.2 O&M System of the AP ................................................................................................................................6-3 6.2.1 AP Manager..........................................................................................................................................6-3 6.2.2 AP WebUI ............................................................................................................................................6-4

6.3 O&M System of Central Office Equipment ..................................................................................................6-5 6.3.1 AG Maintenance System......................................................................................................................6-5 6.3.2 AHR O&M System..............................................................................................................................6-7 6.3.3 Clock Server O&M System .................................................................................................................6-8 6.3.4 SeGW Maintenance System.................................................................................................................6-9

7 Service Operation.......................................................................................................................7-1 7.1 Service Provisioning .....................................................................................................................................7-2

7.1.1 AP User Identifying Scheme................................................................................................................7-2 7.1.2 Service Provisioning Mode..................................................................................................................7-2 7.1.3 AP Registration ....................................................................................................................................7-3

Contents uBro Solution

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

Issue 02 (2009-08-14)

7.1.4 AP Deregistration .................................................................................................................................7-3 7.1.5 AP Migration........................................................................................................................................7-4 7.1.6 Maintenance of the Access Control List of the AP ..............................................................................7-4

7.2 AP Installation ...............................................................................................................................................7-5 7.3 Interference Processing .................................................................................................................................7-5 7.4 Upgrading of the AP......................................................................................................................................7-6 7.5 Maintenance of the AP ..................................................................................................................................7-6

8 Reference Information ..............................................................................................................8-1 8.1 System Performance......................................................................................................................................8-2

8.1.1 AP ........................................................................................................................................................8-2 8.1.2 AG........................................................................................................................................................8-2 8.1.3 AP Manager..........................................................................................................................................8-2 8.1.4 AHR .....................................................................................................................................................8-3 8.1.5 Clock Server.........................................................................................................................................8-4 8.1.6 SeGW...................................................................................................................................................8-4 8.1.7 M2000..................................................................................................................................................8-5 8.1.8 AAA.....................................................................................................................................................8-5

8.2 Reference Standards and Protocols ...............................................................................................................8-5

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

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

uBro Solution Description Figures


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Figures

Figure 1-1 Networking of Huawei uBro solution...............................................................................................1-2

Figure 2-1 Networking architecture of Huawei uBro solution ...........................................................................2-2

Figure 2-2 Components in the provision server .................................................................................................2-4

Figure 2-3 Components in the security gateway server......................................................................................2-5

Figure 2-4 Components in the service gateway server .......................................................................................2-6

Figure 2-5 Components in the uBro single-cabinet ............................................................................................2-7

Figure 2-6 Interfaces in the uBro solution........................................................................................................2-17

Figure 2-7 Protocol stack of the eIu interface ..................................................................................................2-17

Figure 2-8 Protocol stack at the Ab interface ...................................................................................................2-19

Figure 2-9 Protocol stack at the Ae interface....................................................................................................2-19

Figure 2-10 Protocol stack at the Hb interface .................................................................................................2-20

Figure 2-11 Protocol stack at the Hg interface .................................................................................................2-20

Figure 2-12 Protocol stack at the Ho interface .................................................................................................2-21

Figure 2-13 Protocol stack at the Ac interface..................................................................................................2-21

Figure 3-1 AG networking architecture..............................................................................................................3-2

Figure 3-2 xDSL access networking architecture...............................................................................................3-3

Figure 3-3 Ethernet access networking architecture...........................................................................................3-4

Figure 3-4 Networking architecture with the clock server deployed in the uBro core network .........................3-5

Figure 3-5 Networking architecture with the clock server deployed in the backbone network..........................3-6

Figure 3-6 Networking architecture with the clock server deployed in the access network...............................3-6

Figure 6-1 Architecture of the O&M system......................................................................................................6-2

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Tables

Table 8-1 System performance parameters of the AP.........................................................................................8-2

Table 8-2 System performance parameters of the AG ........................................................................................8-2

Table 8-3 System performance parameters of the AP manager ..........................................................................8-2

Table 8-4 Performance specifications of the AHR (Basic configuration)...........................................................8-3

Table 8-5 Performance specifications of the AHR (Medium configuration) ......................................................8-3

Table 8-6 System performance parameters of the clock server ..........................................................................8-4

Table 8-7 System performance parameters of the SeGW ...................................................................................8-5

Table 8-8 System performance parameters of M2000 ........................................................................................8-5

Table 8-9 System performance parameters of AAA ...........................................................................................8-5

uBro Solution Description About This Document

About This Document

Purpose This document describes the Huawei uBro solution V200R001 in terms of architecture, security, QoS, O&M, service operation, and reference information.

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

Product Name Version

uBro solution V200R001,03

Intended Audience This document is intended for:

z System engineer z Maintenance engineer

Organization This document consists of ten chapters and is organized as follows.

Chapter Content

1. Description of the uBro Solution

This chapter describes the background, networking applications, and benefits of the Huawei uBro solution.

2. Solution Architecture This chapter describes the networking architecture, hardware configurations, major NEs and interfaces, and technical features of the Huawei uBro solution.

3. Networking Solution This chapter describes the service networking solution, access networking solution, and clock server deployment solution.

About This Document uBro Solution

Description

Chapter Content

4. Security Solution This chapter describes the security strategies of the Huawei uBro solution in terms of equipment security, network security, and OM security.

5. QoS Policies This chapter describes the general QoS policy of the Huawei uBro solution, as well as the AP air interface QoS solution, transmission QoS solution, and AG QoS solution.

6. Operation and Maintenance

This chapter describes the structure and functions of the OMS of the Huawei uBro solution.

7. Service Operation This chapter describes the service provisioning, installation, interference elimination, software upgrade, and routine maintenance of the AP.

8. Reference Information This chapter describes the specifications of the major NEs in the Huawei uBro solution and the standards and protocols that the solution complies with.

Appendix A Glossary This appendix explains the terms used in this document.

Appendix B Acronyms and Abbreviations

This appendix lists the acronyms and abbreviations used in this document.

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 that, 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 that, if not avoided, could cause equipment damage, data loss, and 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.

uBro Solution Description About This Document

General Conventions

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 Terminal display is in Courier New.

Command Conventions


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in square brackets [ ] are optional.

{ x | y | ... } Alternative items are grouped in braces and separated by vertical bars. One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets and separated by vertical bars. One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by vertical bars. A minimum of one or a maximum of all can be selected.

GUI Conventions


Boldface Buttons, menus, parameters, tabs, windows, and dialog titles are in boldface. For example, click OK.

> Multi-level menus are in boldface and separated by the ">" signs. For example, choose File > Create > Folder.

Keyboard Operation

Format Description

Key Press the key. For example, press Enter and press Tab.

About This Document uBro Solution

Description

Format Description

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means the two keys should be pressed in turn.

Mouse Operation

Action Description

Click Select and release the primary mouse button without moving the pointer.

Double-click Press the primary mouse button twice continuously and quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the pointer to a certain position.

Update History Updates between document versions are cumulative. Therefore, the latest document version contains all updates made to previous versions.

Updates in Issue 02 (2009-08-14) The second release.

Updates in Issue 01 (2009-05-31) Initial release.

uBro Solution Description 1 Description of the uBro Solution


1-1

1 Description of the uBro Solution About Thi

T le lists the cont

s Chapter

he following tab ents of this chapter.

Section Describes

1.1 Background Application background of the uBro solution.

1.2 Huawei uBro Solution The networking of Huawei uBro solution.

1.3 Benefits The benefits that carriers and users can obtain from Huawei uBro solution.

1 Description of the uBro Solution uBro

Solution Description

1-2 Copyright Huawei Technologies Co., Ltd.

2009-08-14)

1.1 Background The indoor coverage of universal mobile telecommunications system (UMTS) signals has always been a problem that troubles users and carriers. The reasons are as follows:

z UMTS signals are in high frequency band, so buildings may block signals. This causes the low quality of the signals at home, in the small office and home office (SOHO), and the small and medium enterprise (SME).

z The coverage of indoor signals has different features from the coverage of outdoor signals. Outdoor signals cover a large area. This is called pane coverage. The indoor UMTS are of small capacity and micro areas. Therefore, the wireless coverage of indoor signals requires point coverage. This means that the macro cell network cannot solve the coverage problem of indoor signals and a better scheme is required.

z With the wide use of the UMTS, indoor users want to enjoy high-speed wireless data services conveniently at low cost. The number of pieces of user equipment (UEs) in the macro cell network is large, and the broadband resources provided through the High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) are shared by many UEs. Therefore, the actual bandwidth allocated to each UE is low and cannot meet the requirements of UEs for high-speed services.

z To solve the coverage problem of indoor signals, carriers need to consider not only the cost of purchasing equipment, but also the cost of installing and maintaining the equipment. Thus, carriers need a solution with low cost and high profits.

Therefore, Huawei Technologies Co., Ltd. (hereafter referred to as Huawei) provides the uBro solution that solves the coverage problem of the indoor signals of the UMTS effectively.

1.2 Huawei uBro Solution Figure 1-1 shows the networking of Huawei uBro solution.

Figure 1-1 Networking of Huawei uBro solution

Huawei Proprietary and Confidential Issue 02 (

AG

Home Zone&SOHO Zone

AP HGW

NodeB RNC

Macro Network

SME Zone

ePico

ePico

UMTS Core Network

uBro Solution Description 1 Description of the uBro Solution


1-3

AP access point AG access gateway UE user equipment HGW home gateway RNC radio network controller

Huawei uBro solution solves the problem of the indoor signal coverage at home, in SOHOs, and in SMEs for carriers.

Huawei uBro solution introduces the access point (AP) and access gateway (AG) into the current UMTS. The AP is an access device in the UMTS and provides users with standard UMTS services. The AP accesses the Internet through the home gateway (HGW), and the ePico accesses the Internet through the enterprise Ethernet, and then accesses the AG. The AG manages the AP/ePico and routes data to the UMTS core network.

UMTS enhance indoor coverage pico base station (ePico), used for macro network indoor blind spot coverage and traffic offloading. The AP is a general term for all the APs used at home, in SOHOs and the ePicos in SMEs, unless there are special specifications.

1.3 Benefits

For Carriers Carriers can obtain the following benefits from Huawei uBro solution:

z The coverage problem of the signals at home, in SOHOs, and in SMEs is solved and the capacity of the UMTS is increased.

z The solution provides sufficient high speed packet access (HSPA) capacity to meet the requirements for high-speed services for the users at home, in SOHOs, and in SMEs. By relying on better UMTS service experience, the solution improves the customer retention rate (CRR).Users can cultivate the habit of using data services.

z Carriers do not have to set up equipment rooms because the AP is small and portable and can be located at home, in SOHOs, and in SMEs. The AP is easy to transport and users can install and provide power supply for the AP by themselves. This helps to decrease the cost of creating a site.

z The AP supports automatic network design, software upgrade, and data configuration. This helps to decrease the operation cost because carriers do not have to spend much energy on maintaining the AP.

z Carriers can use the existing network to set up the uBro network without many changes, thus facilitating the quick setup of the uBro network.

For Users Users can obtain the following benefits from Huawei uBro solution:

z User investment is protected by preventing the AP from being used by unauthorized UEs, because the AP supports the management and admission control of authorized UEs.

1 Description of the uBro Solution uBro


1-4 Huawei Proprietary and Confidential Copyright Huawei Technologies Co., Ltd.

Issue 02 (2009-08-14)

z Compared with the users in the outdoor macro cell network, the users in the uBro network covered by the signals of the AP obtain better UMTS service experience and enjoy the data services with higher speed and quality.

z Compared with the users in the outdoor macro cell network, the users in the uBro network covered by the signals of the AP pay lower fees.

z The AP can be placed on a desk or wall and support plug and play.

uBro Solution Description 2 Solution Architecture


2-1

2 Solution Architecture About Thi

T nten

s Chapter

he following table lists the co ts of this chapter.

Section Describes

2.1 Networking Architecture of Huawei uBro solution. The networking architecture

2.2 Hardware Configurationsne solution with single-cabinet and the other

The hardware configurations of two Huawei uBro solutions, osolution with triple-cabinet.

2.3 Major NEs The major NEs of Huawei uBro solution and their functions.

2.4 Technical Features The technical features of Huawei uBro solution.

2.5 System Interface The interfaces and protocols supported by the uBro solution.

2 Solution Architecture uBro



Issue 02 (2009-08-14)

2.1 Networking Architecture Figure 2-1 shows the networking architecture of Huawei uBro solution.

Figure 2-1 Networking architecture of Huawei uBro solution

User Access Network

Home Zone&SOHO Zone

AP HGW UE

SME Zone

ePico ePico

UE UE

uBro Core NetworkPublic Network UMTS Core Network

SeGW AG

AHRAP Manager

M2000 Clock Server

IP Network

AAA

IP Network

Office LAN

CS

PS

AP access point AG access gateway UE user equipment HGW home gateway SeGW security gateway AHR AP home register AAA authorization, authentication and accounting server CS circuit switched domain PS packet switched domain

The uBro network is divided into three parts:

z User access network This part performs the service access function. The AP is installed at home, in SOHOs, or in SMEs and accesses the public network through the enterprise Ethernet or a home gateway, for example, the asymmetrical digital subscriber line modem (ADSL modem).

z Public network This part is also called the uBro service bearer network. It implements the convergence, distribution, and remote transmission of uBro services.

z uBro core network This part implements the routing, forwarding, and management of uBro services. It consists of the AG, AP manager, AP home register (AHR), clock server, security gateway (SeGW), Huawei iManager M2000 Integrated Network Management System (M2000), authorization, authentication, and accounting server (AAA server).



2-3

2.2 Hardware Configurations The hardware configurations of the uBro core network vary according to the network scale. The uBro core network can be deployed with single-cabinet or triple-cabinet.

The standard hardware configurations of the uBro network are implemented through single-cabinet or triple-cabinet. Customized hardware configurations used in certain scenarios are not described in this section.

2.2.1 Hardware Configurations for Huawei uBro Solution (Triple-cabinet)

In Huawei uBro solution (triple-cabinet), the three cabinets are provided for the provision server, security gateway server, and service gateway server respectively.




Issue 02 (2009-08-14)

Figure 2-2 shows the components in the provision server.

Figure 2-2 Components in the provision server

Provision Server (46U)

Filter panel(3U)

Filter panel(2U)

S5328C-EI-0(1U)

PC Server-1(AAA FEP, optional)(2U)

KVM(1U)

Disk array(3U)

Cable shelf(1U)

S5328C-EI-1(1U)Cable shelf(1U)

Filter panel(1U)

PDF(3U)

M2000-0

AP Manager-0

M2000-1(optional)

AP M

anager-1(optional)SW

USW

UAH

R-0

AHR

-1(optional)AAA

-0

AAA-1

ATAE shelf(14U)

SMM SMM

Filter panel(1U)

Filter panel(3U)

Filter panel(1U)

Outstanding filter panel(1U)

Outstanding filter panel(1U)PC Server-1(AAA FEP, optional)(2U)

Outstanding filter panel(1U)PC Server(USM)(2U)

Outstanding filter panel(1U)

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2-5

Figure 2-3 shows the components in the security gateway server.

Figure 2-3 Components in the security gateway server

Security Gateway Server (46U)

Filter panel(1U)

S9303-0(4U)

S9303-1(4U)

Large-capacity fiber rack(1U)

PDF(3U)

Cabling shelf(1U)


06U05U04U03U02U01U



06U05U04U03U02U01U


Cabling shelf(1U)Filter panel(1U)

Large-capacity fiber rack(1U)

Cabling shelf(1U)IPCLK1000-1(1U)Cabling shelf(1U)IPCLK1000-0(1U)Cabling shelf(1U)

Large-capacity fiber rack(1U)Filter panel(1U)

Cabling shelf(1U)

LPU

ES

PU

SR

U

SFU

SR

U

ES

PU

01 02 03 04 09 11 10 05 06 07 08

12

SFU

Eudemon 8080E(20U)

LPU

Filter panel(1U)




Issue 02 (2009-08-14)

Figure 2-4 shows the components in the service gateway server.

Figure 2-4 Components in the service gateway server

Service Gateway Server (46U)

PDF(2U)

Filter Panel(2U)


06U05U04U03U02U01U



06U05U04U03U02U01U


Air Defence Subrack(2U)



CPCI (9U)

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PSM 2(optional)

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2.2.2 Hardware Configurations for Huawei uBro Solution (Single-cabinet)

Figure 2-5 shows the components in the uBro single-cabinet.

Figure 2-5 Components in the uBro single-cabinet

uBro single-cabinet (46U)

Air Deflector(2U)

Disk array(3U)

PDF (3U)

PC server (USM) (2U)


06U05U04U03U02U01U



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Issue 02 (2009-08-14)

2.3 Major NEs 2.3.1 AP

The AP is the network access device in Huawei uBro solution. The AP is installed at home, in SOHOs, or in SMEs and provides UMTS access services for users.

The AP integrates the NodeB and certain functions of the radio network controller (RNC) and performs the functions of wireless modulation, wireless resources management, and power control.

To meet the requirements in different scenarios, Huawei uBro solution provides two types of AP, the UMTS Access Point 2150 (UAP2150) and ePico3801.The UAP2150 is installed at home and in SOHOs, whereas the ePico3801 is installed in SMEs.

2.3.2 AG The AG is a device on the core network of Huawei uBro solution. Huawei Serving GPRS Support Node 9810 (SGSN9810) serves as the AG in the uBro solution and performs the following functions:

z Forwarding the signaling of the control plane and data packets in the user plane in the Iu interface The AG is connected to the SGSN and MSC of the UMTS through a standard Iu interface, and forwards signaling of the control plane and data packets of the user plane between the AP and the UMTS core network.

z Link control and link management of the AP The AG is connected to the AP through the Enhanced Iu Interface (eIu) interface, and controls/manages the links of the AP.

2.3.3 Clock Server The clock server is in the core network of the uBro solution and provides precise clock source for the AP. Huawei IPCLK1000 serves as the clock server in the uBro solution.

The IPCLK1000 adopts the following clock over IP technologies:

z The Clock over IP technology is divided into two parts, namely, Server and Client. The IPCLK1000 acts as the Server and the AP acts as the Client.

z The Server obtains the clock source from the clock equipment, and then provides the synchronous reference clock to the Client (AP) through the IP network in the form of IP packets after local phase-lock and hold-in.

2.3.4 AHR The AP home register (AHR) is in the uBro core network managed by the carrier.

Huawei AHR performs the following functions:

z Registering/Deregistering an AP user, and managing the subscription data z Centralized management of the AP access control list z AP area management. z AHR system management z AHR log management



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2.3.5 AP manager The AP manager is located in the uBro core network. It is Huawei-developed AP management platform and manages all the APs in the network in a unified manner.

The AP manager performs the following functions:

z AP configuration management z AP fault management z AP software management z Task management z Security management z Log management

2.3.6 SeGW The Security Gateway (SeGW) is located in the ingress of the uBro core network. In Huawei uBro solution, the Eudemon 8080E or Eudemon 1000E serves as the SeGW.

In Huawei uBro solution (triple-cabinet), the Eudemon 8080E serves as the SeGW. In Huawei uBro solution (single-cabinet), the Eudemon 1000E serves as the SeGW.

The SeGW performs the following functions:

z Providing the standard firewall to protect the NEs in the uBro core network. z Providing the IP Security Protocol Virtual Private Network (IPsec VPN) function.

By establishing the IPsec VPN tunnel between the AP and the SeGW, the SeGW provides security protection for the communication between the AP and the uBro core network NE.

2.3.7 M2000 The M2000 is located in the uBro core network. The M2000 is unified wireless network management platform of Huawei. Through the platform, you can manage the AG, Clock Server, AHR, AP Manager, SeGW in a unified way. Huawei M2000 is referred to as the iManager M2000.

2.3.8 AAA The authorization, authentication and accounting (AAA) server is in the uBro core network and performs (U) SIM authentication. Huawei infoX-AAA serves as the AAA server in the uBro solution.

2.4 Technical Features As a new network, Huawei uBro solution possesses the following new technical features.

2.4.1 Automatic Network Planning And Optimizing The uBro system supports the following features about automatic network design:




Issue 02 (2009-08-14)

z Automatic configuration of the frequency point in the cell. Through frequency detection, the AP selects the frequency with minimum interference as the frequency of a cell. The frequency detection range is defined in the cell frequency list of the AP.

z Automatic configuration of scrambles in the cell. The AP detects scrambles to select the scramble with the minimum interference as the AP scramble.

z Automatic configuration of AP neighboring cells. The AP detects the neighboring macro cells with or without the same frequency and completes the AP neighboring cell configuration automatically.

z Pilot frequency power automatic adjustment When the UE calls a call number, the pilot frequency power is adjusted automatically.

2.4.2 Interference Detection After the AP cell is established, the AP can automatically detect the quality of upstream signals, indicate the quality of signals in the current location through an LED in the front panel, allowing the user to adjust the location of the AP. The uBro system supports the following interference detection attributes:

z The AP supports detecting the interferences in the upstream Rx channels. z The AP provides an LED to indicate the interference detection result. Through the signal

LED in the front panel, the AP can indicate the quality of signals in the current location. z The AP supports configuring, modifying, and querying the interference thresholds.

2.4.3 Location Detection (Optional)

Location detection is an optional feature.

To prevent unauthorized use of the AP, the carrier needs to control the location of the AP.

The uBro system detects the location of the AP and judges whether the location of the AP is legitimate. If the location is legitimate, the uBro system allows the AP to be connected to the AG; if not, the uBro system automatically prohibits the utilization of the AP. Location detection can be implemented based on:

z The neighboring cell list of the macro cell neighboring an AP Binding the location of the AP with the neighboring cell list of the macro cells neighboring the AP .When the AP is under the coverage of the macro cell, the uBro system binds the location of the AP with the neighboring cell list of the macro cells neighboring the AP. If the contents of the neighboring cell list change, it means that the location of the AP also changes.

z Dynamic IP addresses If the connectivity session location and repository function (CLF) is available, you can query the port number on the CLF. Locating an AP through the CLF is used in preference.

The location detection feature is applicable to the services related to locations and emergency calls.



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2.4.4 Location Indication When a UE enters the AP cell and resides there successfully, the uBro system needs to notify the UE of the Information about the current network.

The uBro system provides three modes to indicate the locations:

z Through a short message The AP can send a short message. When the UE enters the AP cell, the AP sends a

short message to the UE, notifying the user that he or she has entered the AP cell. The contents of the message can be configured and customized in the AP.

The AP can send a flash short message to the UE for notifying the location. After the message is read, it can be deleted automatically.

When the UE enters and exits the AP cell frequently within a short period, the AP does not send message to the UE to avoid interferences on the user.

z Through a PLMN identifier The AP cell and macro cell use different public land mobile network (PLMN). When a UE resides in the AP cell, the roaming flag appears on the UE. The user of the UE knows that he has already resided in the AP. After the user leaves from the AP cell to the macro cell, the roaming mark disappears.

z Through audio tone insertion (ATI)(Optional) In a CS call between UEs, the AP indicates the location by playing an announcement.

The location indication through an announcement is suitable for both the caller and the callee. Such a location indication mode, however, cannot be implemented during a handover. The location indication through an announcement is applicable to voice services only.

2.4.5 Clock Synchronization To satisfy the requirements of clock synchronization, the uBro solution supports three synchronization modes:

z Synchronization through air interfaces When the AP is under the coverage of macro cells of the UMTS, the AP supports synchronizing clock through an air interface.

z Synchronization through IP networks (Huawei private protocol) The AP receives IP clock packets from the clock server in the IP network for clock synchronization.

z Synchronization through IEEE 1588 Version 2 (1588v2) IEEE 1588v2 is an auto-sensing network time synchronization protocol, in which the clock layering and reconstruction of the entire network can be automatically achieved through the algorithm used for selecting the source.IEEE 1588 supports both clock synchronization and frequency synchronization.The current AP only employs the frequency synchronization mode. To prevent the resources in the clock server which are obtained illegitimately, the control flow is separate from the service flow in the clock. The control flow is transmitted through the IPSec tunnel.

2.4.6 Access Control Supporting access control, the uBro system can implement access control over the UE.




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The uBro system supports the following access control attributes:

z The access control policy is in open mode In open mode, the AP does no restrict the access of any UE.

z The access control policy is in close mode In close mode, the AP only accepts the access request of an authorized UE, and rejects the access requests of unauthorized UEs (except emergency calls). The uBro system supports configuring the access control list of the AP based on the MISISDN numbers of the UEs.

z The access control policy is in group mode The group mode is applicable to the SME. UEs in the access control list of the ePico not only can enjoy the services of the ePico, but also can enjoy services of other ePicos in the group. In group mode, the uBro system configures a unified access control list for the group. The unified access control list is effective to all ePicos in the group.

The access control in group mode is only for ePicos.

2.4.7 Cell Reselection The uBro system supports the following features about cell reselection:

z When a UE is in standby mode, the UE can made bi-directional selection between the AP cell and macro cell, and between the AP cell and AP cell.

z The AP supports the configuration of the hierarchical cell structure (HCS) parameter. It allows the UE to first reside in the AP cell by surveying the valid HCS parameter.

2.4.8 Cell Handover The uBro system supports the following cell handover attributes:

z At homes and in SOHOs Supports the unidirectional hard handover from the AP cell to the neighboring macro cell.

z In SMEs Supports the bi-directional hard handover between neighboring ePico cells and the

automatic configuration of ePico wireless parameters. Supports the unidirectional hard handover from the ePico cell to the neighboring

macro cell. Supports the unidirectional hard handover from the macro cell to the neighboring

ePico cell.

In SMEs, the bi-directional hard handover between ePico cells, and the unidirectional hard handover from the macro cell to the neighboring ePico cell are only for ePicos.

2.4.9 HSPA The uBro system supports the following HSPA attributes:

z The HSDPA service allows the maximum of downlink data rate to be 7.2 Mbit/s. z The HSUPA service allows the maximum of uplink data rate to be 1.44 Mbit/s.



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2.4.10 Security Authentication To prevent illegitimate access of the AP to the AG, the uBro core network needs to authenticate the AP.

The uBro core network authenticates the AP based on Internet Key Exchange version 2 (IKEv2). IKEv2 supports two authentication protocols:

z Extensible Authentication Protocol - subscriber identity module (EAP-SIM). The EAP-SIM is a GSM based authentication and key negotiation mechanism.

z Extensible Authentication Protocol -Authentication and Key Agreement (EAP-AKA)

2.4.11 Differential Charging (Optional) The uBro network and UMTS are the same in the logical architecture of the core network and billing system which is in compliance with 3GPP TS32.200 (R5) and TS32.240 (R6).

The differential charging is implemented based on SAI and LAC:

z The SAI configuration policy refers to classifying SAIs based on UE identity. UEs with different identities correspond to different service area identifications (SAIs). Differential charging is achieved through the mapping between SAIs and charging rates in the call detail record (CDR).

z The differential charging in the PS domain is implemented based on the location area code (LAC).A macro network is differentiated from an AP network by LAC. The CDRs of PS services include LACs, so the use of LACs on both the UMTS and uBro network facilitates the differential charging in the PS domain.

Users are charged in the following two ways based on their identities:

z Users of the UEs with the owner, admin member, or member identity enjoy the pricing standard of HomeZone.

z Users of the UEs with the guest or roaming identity enjoy the pricing standard of the macro network which the UEs cross.

2.4.12 Performance Management of the AP (Optional) The AP manager can subscribe to the performance data of APs. After the subscription, involved APs upload performance files at the end of each statistics period. The AP manager combines the performance files generated within the same period into one file and then sends it to the performance report system (PRS) for parsing and summarizing. Meanwhile, the AP manager exports the configuration data of the APs involved in the feature description and provides the data for the PRS.

As a specialized performance tool, the PRS summarizes performance data, analyzes performance statistics, exports reports, sort performance data, and analyzes interference and call drop.

The performance management of the AP consists of the following functions:

z Subscribing to performance statistics, which are not reported by default z Uploading performance statistics periodically to the PRS




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2.4.13 Double-IPSec (Optional)

The double-IPSec feature is an optional feature.

The information exchanged between the AP and the AG traverses the IP network which has security threats because of the unqualified QoS. Therefore, it is necessary to distinguish between voice streams and data streams by differentiated services code point (DSCP).

The double-IPSec feature ensures that two IPSec tunnels are set up between the AP and the SeGW.

z The AP initiates two EAP authentication requests to obtain two private network addresses.

z The AP labels the streams with different DSCPs based on their destination addresses. z The HGW routes IP packets based on the public network address and private network

address mapped from the DSCP onto the operator network.

2.4.14 Emergency Call Service The route from the UMTS core network to the emergency call center is identified by service area identity (SAI):

z The SAI which is the same as that of the macro network where the AP is located is used for routing emergency calls, thus reusing the emergency call-related resources on the current macro network as many as possible.

z Or, the SAI is only used for routing emergency calls.

2.4.15 Selection of the Optimal Core Network The proximate access of the AP, namely, the AP and the surrounding macro network can be connected to the same pool or the same NE. This not only effectively reduces the cost of constructing the core network but also decreases the signaling between exchanges and switchover delay. In addition, QoS and customer satisfaction rate are improved.

To solve the problem of proximate access of the AP, the multi-CN function is introduced to the SGSN9810 V800R009C02. That is, a AG can connect to multiple CN nodes at the same time.

The AG can connect to multiple MSCs or SGSNs on the core network to ensure that:

z The AP and its home macro network access the same core network. z Network planning is rational.

2.4.16 AG Supporting Iu-Flex The AG can connect to multiple nodes on the core network through Iu-Flex technology. The nodes form a pool and work in redundancy mode or load sharing mode. In a pool, any node can serve the AP. If the nodes on the core network do not form a pool, only the ones saving the RNC ID can provide services for the AP.



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2.4.17 End-to-End Security Solution Between the AP and the AP Manager (Optional)

End-to-end security solution between the AP and the AP Manager is ensured in the following ways:

z Security of the transmission of File Transfer Protocol (FTP) is adopted to ensure the security of the files transmitted between the AP and the AP manager.

z TR069 over Secure Sockets Layer (SSL) is adopted to ensure the security of the management signaling between the AP and the AP manager. SSL and the Transport Layer Security (TLS) are adopted to ensure the security of the

data transmitted between the AP and the AP manager. The AP manager can be configured as the Secure HTTP (HTTPS) server and the AP

the HTTPS client. If HTTPS is configured as the access mode on the universal resource locator (URL) of the AP manager, the AP must support HTTPS connections.

The AP manager is configured with the auto-signature public key certificate and private key to support TLS Rivest, Shamir, Adleman (RSA) series algorithms.

2.4.18 Flow Control of the IMSI Query Requests The AHR supports the flow control of international mobile subscriber identity (IMSI) query requests.

z If the flow of IMSI query requests reaches a threshold, the AHR discards the requests from the AP configured with the access control policy in close mode.

z If the flow of IMSI query requests reaches a threshold, the AHR discards the requests from the AP configured with the access control policy in group mode.

2.4.19 Dynamic Jitter Prevention Typically, the transmission quality at the air interface cannot be ensured because comparatively serious jitter occurs in the transmission of data packets. Quality of the end-to-end data transmission in CS services must be protected from packet loss, delay, and jitter. The AP provides the following measures to prevent jitters dynamically:

z The AP caches the received data packets and determines the synchronization between the time stamp in the packets and the time at the air interface, and then sends data based on the synchronization.

z Clock synchronization is determined based on the first data packet. The cached data packets are sent through the air interface after a fixed interval.

z If no packets are lost within a time period and the data packets are cached in the AP for a long time, the interval before sending out the cached data packets through the air interface can be reduced.

z If data packets are discarded because they reach the AP late, the interval before sending out the cached data packets through the air interface can be extended.

2.4.20 Compensation for Packet Loss in Voice Services If the bearer network cannot guarantee the QoS of the voice services of the AP, it determines whether to start Realtime Transport Protocol (RTP) redundancy compensation based on the loss condition of the packets in uplink and downlink directions dynamically detected by the AP and AG.




Issue 02 (2009-08-14)

Redundancy compensation helps to improve the condition of packet loss in data services when the network status is not good.

2.4.21 Alarm for the Disconnection of AP (Optional) In the enterprise scenario, if the AP is disconnected from the AG because of the failure of power or the bearer network, the network side detects the disconnection and raises an alarm, and then reports the alarm to the M2000 through the AG.

In view of the large number of APs, the network side can only detect certain APs. On the AP manager, users can set which APs need to be detected by the AG for the report of disconnection alarms.

2.4.22 Daylight Saving Time The absolute time synchronously obtained by the AP from the NTP server does not contain the time zone and daylight saving time (DST) rule. The time zone and daylight saving time rule of the AP can be configured on the AP manager. Considering the huge number of APs, the time zone and DST rule are configured as area parameters.

2.4.23 Allocation of Cell IDs Cell IDs can be configured on the AP manager automatically or manually and can be configured as SACs. The range of the cell IDs configured under each RNC ID can also be set on the AP manager.

2.4.24 AP Type APs are classified into two types, home AP and ePico. Users can view the type of an AP on the AP manager. The user manages APs differentially based on their types.

2.4.25 AP Name An AP is assigned AP name, also called node ID. The name information is contained in the alarm sent through the northbound interface.

Being regarded as a user attribute, an AP name is bound to the appropriate AP user and corresponds to the SIM card in the AP. If a user only changes the AP but does not change the SIM card, the AP name does not change.

2.4.26 Separation of OM and Service (Optional) The AP sets up two IPSec tunnels, one for the OM service and the other for the other services. The AP manager supports two virtual local area networks (VLANs), one for the communication with the AP and the other for the communication with the AHR.

The single-cabinet solution does not support the separation of OM and service feature.



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2.5 System Interface 2.5.1 Overview of Interfaces

Figure 2-6 shows the interfaces in Huawei uBro solution.

Figure 2-6 Interfaces in the uBro solution

Public Network

Clock Server

UE

Ho

Ae

AP Manager

SeGW eIu/Ab

Ac

Uu AP

AHR

AG

Hb/Hg

AAA

BOSS

(U)SIM

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RADIUSDiameter

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AP access point AG access gateway UE user equipment HLR home location register SeGW security gateway AHR AP home register AAA authorization, authentication and accounting server CN core network BOSS business and operation support system

2.5.2 eIu Interface The eIu interface is defined by Huawei and adopted between the AP and AG. The eIu interface exchanges the control plane signaling and user plane data between the AP and AG.

Figure 2-7 shows the structure of the protocol stack of the eIu interface.

Figure 2-7 Protocol stack of the eIu interface

RANAP APM

Control plane

Data

PS user plane

GTP-U

UDP

IP

IuUP

CS user plane

RTP

IP

SPUA

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RANAP Radio Access Network Application Part




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APM AP Management Private Protocol SPUA SCTP Private User Adaptation Layer SCTP Stream Control Transmission Protocol IuUP Iu user plane RTP Real Time Protocol UDP User Datagram Protocol IP Internet Protocol GTP-U GPRS Tunneling Protocol for User Plane

Protocols on the Control Plane The protocols adopted by the control plane are shown as follows:

z RANAP The Radio Access Network Application Part (RANAP) implements the signaling exchange between the CN and the RNC for the Iu-CS interface.

z APM The AP Management Private Protocol (APM) is a private protocol defined by Huawei. It aims to provide AP management function such as link management and AP authentication.

z SPUA The SCTP Private User Adaptation Layer (SPUA) is between the SCTP and RANAP: to replace the functions of MTP3 User Adaptation layer (M3UA) and of Signaling Connection Control Part (SCCP).

z SCTP The Stream Control Transmission Protocol (SCTP) is a reliable transmission protocol oriented to connection and based on packets. It is used to transport the Signaling System Number 7 (SS7) over the IP network.

Protocols on the CS User Plane The protocols on the CS user plane are shown as follows:

z UDP The User Datagram Protocol (UDP) is a connectionless transmission layer protocol. It provides connectionless transmission function for the upper layer protocol.

z RTP The Real Time Protocol (RTP) provides E2E real-time transmission for media stream such as voice and video.

z IuUP The Iu User Plane (IuUP) is a wireless network user plane protocol of the Iu interface, and is intended to transmit user plane data related to the Radio Access Bearers (RAB). The IuUP is borne over the RTP layer to ensure real-time transmission of voice.

Protocols on the PS User Plane The GPRS Tunneling Protocol for User Plane (GTP-U) transmits PS domain data packet directly. The GTP-U protocol uses the GTP tunnel ID to identify the user services.



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2.5.3 Ab Interface The Ab interface is between the AP and the AG. When the AP is powered on for the first time and initiates the BOOT flow, the AP communicates with the AG through the Ab interface, and acquires the AP initialization configuration data, including wireless network parameters and the IP address list of uBro core network.

Figure 2-8 shows the protocol stack at the Ab interface.

Figure 2-8 Protocol stack at the Ab interface

Application

IP

UDP

The Ae interface supports the following protocols:

z UDP z IP

2.5.4 Ae Interface The Ae interface is between the AP and the AP manager. The AP manager manages the APs through the Ae interface. The Ae interface complies with the TR069 protocol.

AP Manager V100R002C02 and later versions support the TR069 over Security Socket Layer (TR069 over SSL) protocol stack to ensure the security of management signaling between the AP and the AP manager. In the TR069 over SSL protocol stack, the Secure HTTP (HTTPS) protocol is used.

Figure 2-9 shows the protocol stack at the Ae interface.

Figure 2-9 Protocol stack at the Ae interface

SOAP

IP

TCP

RPC Mothods

Application

HTTP

The Ae interface supports the following protocols:




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z Remote Procedure Call (RPC) Methods z Simple Object Access Protocol (SOAP) z Hyper Text Transport Protocol (HTTP) z Transport Control Protocol (TCP) z IP

2.5.5 Hb Interface The Hb interface is between the AG and the AHR. When the AP is powered on and initiates the BOOT flow, the AG communicates with the AHR through the Hb interface, and acquires the AP initialization configuration data.

Figure 2-10 shows the protocol stack at the Hb interface.

Figure 2-10 Protocol stack at the Hb interface

Application

IP

UDP

The Hb interface supports the following protocols:

z UDP z IP

2.5.6 Hg Interface The Hg interface is between the AG and the AHR.

The Hg interface performs the following functions:

z When the AP is registered in the AHR or the AP user modifies the user's service information through the AHR, the AHR sends service attribute parameters to the AG through the Hg interface.

z The AHR provides the AP location detection function for the AG through the Hg interface.

Figure 2-11 shows the protocol stack at the Hg interface.

Figure 2-11 Protocol stack at the Hg interface

Application

IP

UDP

The Hg interface supports the following protocols:



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z UDP z IP

2.5.7 Ho Interface The Ho interface is between the AHR and the AP manager.

When adding, modifying, or deleting the Information about the group of the AP, the AHR sends the changed group information to the AP manager through the Ho interface to guarantee the group information consistency between the AHR and the AP manager.

Figure 2-12 shows the protocol stack at the Ho interface.

Figure 2-12 Protocol stack at the Ho interface

SOAP

IP

TCP

Application

HTTP

The Ho interface supports the following protocols:

z SOAP z HTTP z TCP z IP

2.5.8 Ac Interface The Ac interface is between the AP and the clock server. The AP communicates with the clock server through the Ac interface to synchronize the clock.

Figure 2-13 shows the protocol stack at the Ac interface.

Figure 2-13 Protocol stack at the Ac interface

Application

IP

UDP

The Ac interface supports the following protocols:




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z UDP z IP

2.5.9 RADIUS Interface The Remote Authentication Dial In User Service (RADIUS) interface is between the SeGW and the AAA. RADIUS adopts UDP as the transmission protocol.

2.5.10 D' Interface D' interface complies with the 3GPP TS29.078 Standards, and adopts the Mobile Application Part (MAP) protocol.

D' interface is an optional interface of Huawei uBro solution. If the carrier's HLR supports D' interface, Huawei uBro solution supports D' interface between the AAA and the carrier's HLR.

When the AP initiates a (U) SIM card based authentication request to the AAA, the AAA acquires the authentication data of the (U) SIM card from the HLR through D' interface.

2.5.11 Diameter Interface The Diameter protocols comply with standards of the next-generation AAA protocol. The Diameter protocols include the basic protocol, Network Access Server (NAS) protocol, Extensible Authentication Protocol (EAP), Mobile IP (MIP) protocol, and Code Message Syntax (CMS) protocol.

The Diameter protocol is the optional interface of Huawei uBro solution. When the carrier's HLR does not support the D' interface, Huawei uBro solution supports the Diameter interface between the AAA and the AHR.

When the AP initiates a (U) SIM card based authentication request to the AAA, the AAA acquires the authentication data of the (U) SIM card from the AHR through Diameter interface.

A network can select either the D' interface or the Diameter interface. But the two interfaces cannot coexist in a network simultaneously.

2.5.12 Uu Interface The standard Uu interface is between the UE and AP. The Uu interface complies with the standards of 3GPP Release 6, and supports terminals of standards R99, R4, R5 and R6.

2.5.13 Iu Interface The Iu interface is between the AG and the UMTS core network. The Iu interface complies with standards of 3GPP Release 6 and supports bearing over ATM. An increasing number of core network devices are based on IP addresses and the Iu interface is also over IP.

The Iu interfaces of SGSN9810 V800R009C02 and later versions are over IP. Iu over IP is an optional feature. The single-cabinet solution does not support the Iu over IP feature.

uBro Solution Description 3 Networking Solution


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3 Networking Solution About Thi

T he contents o

s Chapter

he following table lists t f this chapter.

Section Describes

3.1 Service Networking The service networking solutions of Huawei uBro solution.

3.2 Access Networking AP access networking of Huawei uBro solution.

3.3 Clock Server Deployment Scheme

Deployment of the clock server in the uBro solution.

3 Networking Solution uBro



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3.1 Service Networking

Networking Architecture Figure 3-1 shows the AG networking architecture.

Figure 3-1 AG networking architecture

AP

GGSN

AG

Gn

eIuCSIu-CS

Iu-PS

SGSN

In this solution, the AG provides the following functions:

z Provides the eIu interface to connect with the AP, thus controlling and managing the AP. z Provides the standard Iu interface to connect with the UMTS core network, thus

converging and forwarding the service data and control data of the AP.

Networking Principles In the UMTS, the CN is divided into the CS domain and PS domain. The uBro network services are therefore divided into the CS domain services and PS domain services.

The traditional CS domain service, such as voice services, complies with the following principles:

z The AP encapsulates service data into IuUP packets and sends the packets to the AG through the eIu interface in IP bearer mode.

z The AG does not process the data, sends the service data to the CS domain of the CN through the standard Iu-CS interface.

For the PS domain services, the realization principles are the same as those in the traditional UMTS.

Networking Features The networking scheme can be implemented easily, without too many changes to the network equipment in the UMTS network. The AG adopts the standard Lu interface for connecting with the UMTS core network. The interoperability test for other interfaces is not required.

uBro Solution Description 3 Networking Solution


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3.2 Access Networking Access networking refers to the networking mode adopted by the AP for accessing the uBro core network.

3.2.1 xDSL Access Networking In the Home and SOHO application scenarios, the x Digital Subscriber Line (xDSL) broadband access is adopted extensively. The access networking scheme of Huawei uBro solution supports the xDSL access.

Figure 3-2 shows the xDSL access networking architecture.

Figure 3-2 xDSL access networking architecture

AP

IPsec tunnel

xDSL

AHR

AG

uBro core network

RouterBRASDSLAM

Public IP network

SeGW

AAA

BRAS broadband access server xDSL x digital subscriber line DSLAM digital subscriber line access multiplexer

Networking Principles In the Home and SOHO application scenarios, the AP connects to the public IP network through multi-channel xDSL. The Digital Subscriber Line Access Multiplexer (DSLAM) converges and distributes data, and isolates other AP users through the dedicated VLAN. The AP service is transmitted to the broadband access server (BRAS) through the point to point protocol over Ethernet (PPPoE) or dynamic host configuration protocol (DHCP) to complete the access authentication and charging of the public IP network.

After passing the BRAS authentication, the AP service is sent to the SeGW (ingress equipment) of the uBro core network through the public network. The SeGW processes the data and forwards the data to the AG and AAA, thus finishing the authentication of the mobile service.

Networking Features The xDSL access networking solution possesses the following features:

z Uses rich home broadband resources. The AP, as an online user of the xDSL, does not require a private transmission network.

z Allocates PVCs to the AP services to isolate them from other services and ensure the QoS of the AP services.

z Adopts the IPsec transmission scheme to ensure transmission security.

3 Networking Solution uBro



Issue 02 (2009-08-14)

Because the AP service data must pass the public IP network with security loophole, the IPsec transmission scheme establishes IPsec security channels between the AP and the SeGW to ensure the secure communication between the AP and the NE in the uBro core network.

The IPsec ensures the security of data transmission by adding new fields to the headers of the IP data packets. In tunneling mode, the whole IP packet is used to calculate the ESP header. The whole IP packet is encrypted and encapsulated in a new IP packet with the ESP header. When data is transmitted over the Internet, the real original address and destination address are hidden.

3.2.2 Ethernet Access Networking In the Small and Medium Enterprise (SME) application scenario,

ubro solution description(v200r001_02,03)

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