Annex B 8.2.1 RNC System Description RevA

System Description

RNCV200R009

Issue 01

Date 2007-05-31

HUAWEI TECHNOLOGIES CO., LTD.

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Issue 01 (2007-05-31) Commercial in Confidence of 65

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About This Document

Author

Prepared by Zhang Lijun Date 2006-11-26

Reviewed by

Jin Ming, Dong Qing, Xu Jiangfan, Chang Rong, Lan Tian, Wu Yaqing, Han Jieguo, Chen Jing, Zhao Yongxiang, Wu Yongbo, Jin Caiju, and Zhang Yaqiong

Date 2006-12-20

Approved by

Date

SummaryThis document provides information for Huawei WCDMA Radio Network Controller (RNC).

This document includes:

Chapter Details

1 Introduction to the RNC Describes the position of the RNC in the WCDMA network.

2 Key Benefits Describes the key benefits of the RNC.

3 System Architecture Describes the hardware structure, logical structure, and hardware configuration of the RNC.

4 Operation and Maintenance Describes the OM structure and OM functions of the RNC.

5 Reliability Describes the system reliability, hardware reliability, and software reliability of the RNC.

6 Technical Specifications Describes the technical specifications for the RNC.


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Chapter Details

7 Installation Describes the hardware and software installation requirements for the RNC.


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History

Issue

Details Date Author Approved by

01 Creation Zhang Lijun


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Contents

1 Introduction to the RNC..................................................................................................81.1 About This Chapter.......................................................................................................................... 8

1.2 Position of the RNC in the WCDMA Network..................................................................................8

1.3 Main Functions of the RNC.............................................................................................................9

2 Key Benefits...................................................................................................................112.1 About This Chapter........................................................................................................................ 11

2.2 All-IP Platform of Advanced Radio Controller.................................................................................11

2.3 High Integration and Large Capacity.............................................................................................11

2.4 SPM-Based Modular Design and Flexible Expansion...................................................................12

2.5 Multiple Clock Sources.................................................................................................................. 12

2.6 Diverse Transmission Solutions....................................................................................................12

2.6.1 Multiple Iub Network Topologies...........................................................................................12

2.6.2 Multiple Types of Transmission Ports....................................................................................13

2.6.3 Flexible Configuration of Interface Boards............................................................................13

2.6.4 IP Transport on the Iub/Iur/Iu Interfaces................................................................................13

2.6.5 Hybrid IP Transport on the Iub Interface...............................................................................13

2.6.6 ATM/IP Dual Stack on the Iub Interface................................................................................13

2.6.7 Satellite Transmission on the Iub Interface...........................................................................13

2.6.8 IMA....................................................................................................................................... 14

2.6.9 Fractional Functions..............................................................................................................14

2.6.10 Timeslot Cross Connection.................................................................................................14

2.6.11 MLPPP................................................................................................................................ 14

2.7 Advanced RRM Algorithms............................................................................................................14

2.7.1 Power Control....................................................................................................................... 15

2.7.2 Handover.............................................................................................................................. 15

2.7.3 Radio Resource Allocation....................................................................................................15

2.7.4 CAC and Load Control..........................................................................................................15

2.8 Advanced Solutions to Radio Data Services.................................................................................15

2.8.1 HSDPA.................................................................................................................................. 15

2.8.2 HSUPA.................................................................................................................................. 15

2.8.3 MBMS................................................................................................................................... 15

2.9 High Compatibility of Protocols......................................................................................................16


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3 System Architecture......................................................................................................173.1 About This Chapter........................................................................................................................ 17

3.2 Physical Structure.......................................................................................................................... 17

3.2.1 Cabinet Appearance.............................................................................................................17

3.2.2 Cabinet Components............................................................................................................18

3.2.3 Subrack Components...........................................................................................................20

3.2.4 RSS Subrack........................................................................................................................ 21

3.2.5 RBS Subrack........................................................................................................................ 24

3.3 Logical Structure........................................................................................................................... 25

3.3.1 Internal Switching Module.....................................................................................................25

3.3.2 User Plane Data Processing Module....................................................................................25

3.3.3 Control Plane Data Processing Module................................................................................26

3.3.4 Clock Module........................................................................................................................ 26

3.3.5 Transmission Interface Module.............................................................................................26

3.3.6 OM Module........................................................................................................................... 26

3.4 Hardware Configuration................................................................................................................. 26

3.4.1 Minimum Configuration.........................................................................................................27

3.4.2 Maximum Configuration........................................................................................................27

3.4.3 Typical Configurations...........................................................................................................28

4 Operation and Maintenance.........................................................................................294.1 About This Chapter........................................................................................................................ 29

4.2 OM Structure................................................................................................................................. 29

4.3 OM Functions................................................................................................................................ 31

4.3.1 Security Management...........................................................................................................31

4.3.2 Configuration Management...................................................................................................31

4.3.3 Maintenance Management...................................................................................................33

4.3.4 Fault Detection...................................................................................................................... 35

4.3.5 Performance Management...................................................................................................36

4.3.6 Alarm Management...............................................................................................................36

4.3.7 Loading Management...........................................................................................................37

4.3.8 Status Monitoring.................................................................................................................. 37

4.3.9 Message Tracing..................................................................................................................38

4.3.10 Log Management................................................................................................................38

4.3.11 Software Management........................................................................................................39

5 Reliability.......................................................................................................................415.1 About This Chapter........................................................................................................................ 41

5.2 System Reliability.......................................................................................................................... 41

5.3 Hardware Reliability....................................................................................................................... 42

5.4 Software Reliability........................................................................................................................ 43

6 Technical Specifications...............................................................................................456.1 About This Chapter........................................................................................................................ 45


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6.2 Performance Specifications...........................................................................................................45

6.3 Transmission Port Specifications...................................................................................................46

6.4 GPS Feeder Specifications...........................................................................................................47

6.5 Reliability Specifications................................................................................................................47

6.6 Structural Specifications................................................................................................................47

6.7 Electrical Specifications.................................................................................................................48

6.8 Power Consumption in Typical Configurations..............................................................................48

6.9 Clock Specifications...................................................................................................................... 49

6.10 Noise and Safety Compliance.....................................................................................................49

6.11 Environmental Protection Specifications......................................................................................49

6.12 International Protection Specifications.........................................................................................50

6.13 Environmental Requirements......................................................................................................50

6.13.1 Storage Environment..........................................................................................................50

6.13.2 Transportation Environment................................................................................................52

6.13.3 Working Environment..........................................................................................................55

7 Installation.....................................................................................................................587.1 About This Chapter........................................................................................................................ 58

7.2 Hardware Installation.....................................................................................................................58

7.3 Software Installation...................................................................................................................... 59

A Acronyms and Abbreviations..........................................................................................60


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1 Introduction to the RNC

1.1 About This ChapterThis chapter introduces the Radio Network Controller (RNC). The chapter consists of the following sections:

Position of the RNC in the WCDMA Network

1.2 Position of the RNC in the WCDMA NetworkThe RNC is an important element of the WCDMA network. RNCs and NodeBs compose the UMTS Terrestrial Radio Access Network (UTRAN). Figure 1-1 shows the position of the RNC in the WCDMA network.


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Figure 1-1 Position of the RNC in the WCDMA network

UTRANUu

UEIu

CN

Iu-CS

MSC server

MGW

Iub

NodeB

NodeB

Iub

NodeB RNC

RNC

Iu-PS

Iu-BC

CBC

SGSN

Iur

Iub

CN: Core Network CBC: Cell Broadcast Center MGW: Media Gateway RNC: Radio Network ControllerSGSN: Serving GPRS Support Node UE: User EquipmentUTRAN: UMTS Terrestrial Radio Access Network

As shown in Figure 1-1, each RNC is connected to:

NodeB(s) through the lub interface

The MSC (or the MSC server and MGW in R4/R5/R6), which processes Circuit Switched (CS) services through the Iu-CS interface

The SGSN, which processes Packet Switched (PS) services through the Iu-PS interface

The CBC, which processes broadcast services through the Iu-BC interface

Other RNCs through the Iur interface to exchange information

1.3 Main Functions of the RNCThe RNC has the following main functions:

Broadcasting system information and controlling UE access

Performing mobility management, such as handover and Serving Radio Network Subsystem (SRNS) relocation


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Performing radio resource management, such as macro diversity combining, power control, and cell resource allocation

Providing radio bearer services for both PS and CS domains

Providing transmission channels between the CN and UEs

Ciphering and deciphering the signaling and data on radio channels

The model of Huawei RNC is BSC6810. All its interfaces, including the Iub, Iu-CS, Iu-PS, Iu-BC and Iur are standard interfaces, which connect the BSC6810 to the NodeB, MSC, SGSN, CBC, and RNC of other vendors.


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2 Key Benefits

2.1 About This ChapterThis chapter consists of the following sections:

All-IP Platform of Advanced Radio Controller

High Integration and Large Capacity

SPM-Based Modular Design and Flexible Expansion

Multiple Clock Sources

Diverse Transmission Solutions

Advanced RRM Algorithms

Advanced Solutions to Radio Data Services

High Compatibility of Protocols

2.2 All-IP Platform of Advanced Radio ControllerThe BSC6810 uses the all-IP Platform of Advanced Radio Controller (PARC) developed by Huawei. This platform can meet the requirements for the development of high-speed packet services.

2.3 High Integration and Large CapacityThe BSC6810 has the following features:

The BSC6810 is highly integrated. Based on the Gigabit Ethernet (GE) star non-blocking switching on the Medium Access Control (MAC) sublayer, the BSC6810 achieves a central switching capacity of 120 Gbit/s.

The BSC6810 supports up to 1,700 NodeBs and 5,100 cells.

The BSC6810 supports up to 51,000 Erlang voice traffic or 3,264 Mbit/s (UL + DL) PS data capacity. Such capacity, however, is implemented by only two cabinets.


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The BSC6810 provides a single-cabinet solution supporting 24,000 Erlang voice traffic or 1,536 Mbit/s (UL + DL) PS data capacity.

2.4 SPM-Based Modular Design and Flexible ExpansionThe BSC6810 adopts the modular design based on Service Processing Modules (SPMs). The SPMs take the load sharing design to share resources.

Through the addition of SPMs, the capacity of the BSC6810 can be increased smoothly with no disruption of ongoing services. The BSC6810 can be configured with a maximum of 17 SPMs.

2.5 Multiple Clock SourcesMultiple clock sources are available for the BSC6810. Thus, the BSC6810 can select clock sources flexibly.

The available clock sources are as follows:

Building Integrated Timing Supply System (BITS)

Global Positioning System (GPS)

Line clock extracted from the Iu interface

External 8 kHz clock provided by an external device

The BSC6810 can set a priority for each clock source.

NOTE

If the BSC6810 fails to obtain any external clock, the BSC6810 can obtain its working timing signals from the local oscillator.

When the BSC6810 uses the timing signals generated by the local oscillator, which do not meet the requirements of NodeBs for the clock precision, the NodeBs fail to obtain timing signals from the RNC.

2.6 Diverse Transmission SolutionsThe BSC6810 provides diverse transmission solutions by supporting:

Multiple Iub Network Topologies

Multiple Types of Transmission Ports

Flexible Configuration of Interface Boards

IP Transport on the Iub/Iur/Iu Interfaces

Hybrid IP Transport on the Iub Interface

ATM/IP Dual Stack on the Iub Interface

Satellite Transmission on the Iub Interface

IMA

Fractional Functions

Timeslot Cross Connection


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MLPPP

2.6.1 Multiple Iub Network TopologiesThe BSC6810 supports multiple Iub network topologies, such as star, chain, and tree.

2.6.2 Multiple Types of Transmission Ports

The BSC6810 provides multiple types of physical transmission ports for the Iub, Iur, and Iu interfaces.

The Asynchronous Transfer Mode (ATM) transmission ports are of the following types:

E1/T1

Unchannelized STM-1/OC-3c

Channelized STM-1/OC-3

The IP transmission ports are of the following types:

E1/T1

Fast Ethernet (FE)

GE

2.6.3 Flexible Configuration of Interface BoardsThe BSC6810 does not place restrictions on which slots hold interface boards for the Iub, Iur, or Iu respectively. A subrack can host different types of ATM and IP interface boards at the same time.

2.6.4 IP Transport on the Iub/Iur/Iu InterfacesIn addition to ATM transport, the BSC6810 supports IP transport on the Iub, Iur, and Iu interfaces. This agrees with the evolution to an all-IP network, provides sufficient bandwidth for high-speed and large-volume data services, and reduces the cost of construction, operation, and maintenance of transport networks.

2.6.5 Hybrid IP Transport on the Iub InterfaceWhen IP transport is applied to the Iub interface, data of different priorities can be transmitted separately through E1/T1 ports and FE ports. The transmission mode of a service depends on the Quality of Service (QoS) requirement. Services with high QoS requirements are transmitted through E1/T1 ports, and those with low QoS requirements are transmitted on the Ethernet. Hybrid IP transport guarantees the QoS and provides sufficient interface bandwidth for high-speed PS services such as High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA), thus saving the transmission cost.


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2.6.6 ATM/IP Dual Stack on the Iub InterfaceATM/IP dual stack is supported between the BSC6810 and a NodeB. Services with high QoS requirements are transmitted through ATM, while those with low QoS requirements through IP. Such data transmission guarantees the QoS and provides sufficient interface bandwidth for high-speed PS services such as HSDPA and HSUPA, thus saving the transmission cost.

2.6.7 Satellite Transmission on the Iub InterfaceThe BSC6810 supports satellite transmission on the Iub interface to cover isolated areas.

2.6.8 IMAThe BSC6810 provides the Inverse Multiplexing on ATM (IMA) function over E1/T1 links. An ATM cell stream from a high-speed transport link is multiplexed inversely onto multiple low-speed E1/T1 links. Then, at the receiver end, the low-speed cell streams are converged to the original high-speed cell stream.

The IMA function enables high-speed transmission through low-speed links. Thus, it broadens the application scope of E1/T1 links. In addition, this function has a relatively high fault tolerance. Provided that the number of working links is not smaller than the specified minimum number of active links in the IMA group, services can continue. Thus, the IMA function ensures high transmission reliability.

2.6.9 Fractional FunctionsThe BSC6810 provides the fractional functions, that is, fractional ATM and fractional IMA. The fractional functions enable the 3G equipment to share the E1/T1 links of a 2G network, thus allowing 2G and 3G concurrent transmission.

With the fractional functions, you can deploy NodeBs at an early stage of WCDMA network construction by using the existing 2G transmission resources. Thus, you can launch the system at a comparatively low cost and within a relatively short period of time.

2.6.10 Timeslot Cross ConnectionThe BSC6810 supports the timeslot cross connection function without support from any special device.

2.6.11 MLPPPThe BSC6810 provides the Multilink PPP (MLPPP) function. This function combines physically independent links to form only one logical channel. Thus, the network layer can send data directly to this logical channel. The MLPPP function provides a relatively high bandwidth and implements rapid data transfer.

2.7 Advanced RRM AlgorithmsThe BSC6810 uses Huawei-patented Radio Resource Management (RRM) algorithms in the following functions:


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Power control

Handover

Radio resource allocation

Call Admission Control (CAC)

Load control

In addition, the BSC6810 applies these algorithms in new features such as HSDPA, HSUPA, and Multimedia Broadcast and Multicast Service (MBMS). Thus, the BSC6810 offers optimum network coverage, capacity, and quality.

2.7.1 Power ControlThe BSC6810 uses Huawei-patented outer loop power control algorithms. It aims to provide the required quality for the UE when the radio environment changes and to increase the usage of system capacity.

2.7.2 HandoverThe BSC6810 supports flexible handover strategies and parameter configurations. Based on different coverage areas, services and loads, it performs different kinds of handovers, such as intra-frequency handover, inter-frequency handover, and inter-RAT handover. Thus, it improves the speech quality, reduces the call drop rate, and implements traffic absorption in special areas.

2.7.3 Radio Resource AllocationBased on the QoS requirements, actual traffic volume, and actual cell load, the BSC6810 can allocate resources dynamically. Thus, it fulfills the communication requirements and increases the efficiency of radio channel resources.

2.7.4 CAC and Load ControlThe BSC6810 applies multiple Huawei-patented technologies, such as load sharing and admission based on rate downsizing, to balance loads between cells and to control service access. Thus, it increases the system capacity and guarantees the current QoS.

2.8 Advanced Solutions to Radio Data ServicesThe BSC6810 adopts the advanced technologies, such as HSDPA, HSUPA, and MBMS, to meet the requirements of different types of data services.

2.8.1 HSDPAThe BSC6810 adopts the HSDPA technology as the solution to high-speed downlink data transmission. The downlink rate for a single user can reach a maximum of 7.2 Mbit/s on the MAC sublayer.


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2.8.2 HSUPAThe BSC6810 adopts the HSUPA technology as the solution to high-speed uplink data transmission. The uplink rate for a single user can reach a maximum of 1.44 Mbit/s on the MAC sublayer.

2.8.3 MBMSThe BSC6810 adopts the MBMS technology to provide broadcast of high-speed multimedia services. The transmission rate of the MBMS services can reach a maximum of 256 kbit/s.

2.9 High Compatibility of ProtocolsThe BSC6810 is developed according to 3GPP R6 specifications. It is compatible with other Network Elements (NEs) and UEs based on 3GPP R6, R5, R4, or R99 specifications.


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3 System Architecture


Physical Structure

Logical Structure

Hardware Configuration

3.2 Physical Structure

3.2.1 Cabinet AppearanceThe BSC6810 uses the standard N68-22 or N68-21-N cabinet of Huawei. The design complies with the IEC60297 and IEEE standards. Figure 3-1 shows the cabinet.


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Figure 3-1 BSC6810 cabinet

3.2.2 Cabinet ComponentsThe BSC6810 has the following two types of cabinets:

RNC Switch Rack (RSR)

RNC Business Rack (RBR)


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Figure 3-1 shows the components of the cabinets.

Figure 3-1 Components of the BSC6810 cabinets

RBS

RSR RBR

RBS

RBS

RBS

Power distribution box Power distribution box

RSS

CSUa

RINT

RINT

RINT

RINT

RINT

RINT

CSUa

GCUa

DPUb

DPUb

GCUa

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

RBS

SPUa

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

SPUa

DPUb

DPUb

DPUb

DPUb

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

SPUa

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

SPUa

DPUb

DPUb

DPUb

DPUb

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

SPUa

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

SPUa

DPUb

DPUb

DPUb

DPUb

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

SPUa

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

SPUa

DPUb

DPUb

DPUb

DPUb

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

SPUa

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

SPUa

DPUb

DPUb

DPUb

DPUb

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

OMUa

OMUa

RINT

RINT

RINT

RINT

NOTE

The RINT refers to the interface board of the BSC6810. There is no concrete RINT.

RSR

The RSR provides the single-cabinet solution.


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The RSR has the following components:

One RNC Switching Subrack (RSS)

Zero to two RNC Business Subracks (RBSs)

RBR

The RBR is configured when the required service processing capability exceeds the specifications for the RSR. At most one RBR can be configured.

The RBR is configured with only RBSs. The number of RBSs in the RBR ranges from 1 to 3. If the RBR is configured with one or two RBSs, the RBSs should be configured from the bottom to the top.

3.2.3 Subrack ComponentsThe BSC6810 has two types of subracks according to board configuration. They are the RSS and the RBS. The BSC6810 can be configured with up to six subracks. Among the subracks, one is the RSS, and the others are RBSs. The number of RBSs ranges from 0 to 5.

The subracks of the BSC6810 have a standard width of 19 inches, which complies with the IEC60297 standard. The height of a single subrack is 12 U. In a subrack, the backplane is positioned in the middle, and front and rear boards are installed on both sides of the backplane, as shown in Figure 3-1. The slots are of the same length.

Figure 3-1 Subrack of the BSC6810

A

C

B

0 13

14 27

6

20

A: front boards B: backplane C: rear boards

Each subrack of the BSC6810 provides a total of 28 slots. The 14 slots on the front side of the backplane are numbered from 0 to 13, and those on the rear side from 14 to 27.

On each plane from leftmost to rightmost, every two even- and odd-numbered neighboring slots have an active/standby relationship. For example, slots 0 and 1 are


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active/standby slots. The same is true of slots 2 and 3. Boards that work in active/standby mode must be installed in active/standby slots.

3.2.4 RSS SubrackThe mandatory RSS is configured in the RSR. The RSS is the central switching subrack of the BSC6810. This subrack has the following functions:

Connecting to each RBS and transferring data between RBSs through data switching on the MAC sublayer

Performing centralized processing on MBMS user plane data

Providing system timing signals

Providing the same service processing function as the RBS

Providing transmission of physical layer data for the Iub, Iur, and Iu interfaces

Figure 3-1 shows the boards in the RSS.

Figure 3-1 Boards in the RSS

1311975310 2 4 6 8 10 12

2725232119171514 16 18 20 22 24

CSUa

CSUa

GCUa

DPUb

DPUb

GCUa

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

RINT

RINT

RINT

RINT

RINT

RINT

26

OMUa

OMUa

RINT

RINT

RINT

RINT

The RSS provides 28 slots. Table 3-1 describes the boards in the RSS.

Table 3-1 Boards in the RSS

Board Full Spelling Function Configuration

CSUa RNC Common Service Processing Unit REV:a

Performing centralized processing on MBMS user plane data

Two CSUa boards are permanently configured in slots 0 and 1.

DPUb RNC Data Processing Unit REV:b

Processing and distributing service data on the user plane

Slots 8–11 are available for the DPUb boards.


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GCUa RNC General Clock Unit REV:a

Performing phase-lock and retaining on the system clock

Generating RFN signals for the RNC

Two GCUa boards are permanently configured in slots 12 and 13.

GCGa RNC General Clock with GPS Card REV:a

Having all the functions of the GCUa; in addition, receiving and processing GPS signals

Two GCGa boards are permanently configured in slots 12 and 13.

OMUa RNC Operation and Maintenance Unit REV:a

Performing configuration management, performance management, fault detection, security management, loading management, and so on

Working as the Operation and Maintenance (OM) agent of the M2000 and Local Maintenance Terminals (LMTs) to provide the BSC6810 OM interface for the M2000 and LMTs and to control communication between the BSC6810 and the M2000/LMTs

One OMUa is permanently configured in slots 20 and 21, and the other in slots 22 and 23.

SCUa RNC GE Switching and Control Unit REV:a

Providing MAC switching, and enabling convergence of ATM and IP networks

Providing 60 Gbit/s switching capacity Providing the port trunking function Enabling inter-subrack connections Providing configuration and maintenance

of a subrack or of the whole RNC Distributing timing signals and RFN

signals for the RNC

Two SCUa boards are permanently configured in slots 6 and 7.

SPUa RNC Signaling Processing Unit REV:a

Processing high-layer signaling of the Uu, Iu, Iur, and Iub interfaces

Processing transport layer signaling Allocating and managing various

resources necessary to service setup, and establishing signaling and service connections

Providing 4 independent processor systems

Processing RNC Frame Number (RFN) signals

Slots 2–5 are available for the SPUa boards.


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RINT AEUa RNC 32-port ATM over E1/T1/J1 Interface Unit REV:a

Providing 32 E1s/T1s Providing ATM over E1/T1 Providing the IMA and UNI functions Providing the fractional ATM and

fractional IMA functions Providing the timeslot cross connection

function Providing ATM Adaptation Layer 2

(AAL2) switching Extracting the clock from E1/T1 links,

outputting 2 MHz signals, and sending the 2 MHz timing signals to the GCUa/GCGa

Slots 14–19 and 24–27 are available for the AEUa boards.

AOUa RNC 2-port ATM over Channelized Optical STM-1/OC-3 Interface Unit REV:a

Providing 2 STM-1/OC-3 optical ports Providing 126 E1s or 168 T1s Providing ATM over E1/T1 over SDH Providing the IMA and UNI functions Providing 84 IMA groups, each of which

contains 32 E1s/T1s Providing AAL2 switching Receiving timing signals from upper-

level equipment and sending them to the GCUa/GCGa

Providing timing signals for NodeBs

Slots 14–19 and 24–27 are available for the AOUa boards.

UOIa RNC 4-port ATM/Packet over Unchannelized Optical STM-1/OC-3c Interface Unit REV:a

Providing 4 STM-1/OC-3c optical ports Providing ATM over SDH Receiving timing signals from upper-

level equipment and sending them to the GCUa/GCGa


Slots 14–19 and 24–27 are available for the UOIa boards.

PEUa RNC 32-port Packet over E1/T1/J1 Interface Unit REV:a

Providing 32 E1s/T1s Providing IP over PPP/MLPPP over

E1/T1 Providing 256 PPP links or 64 MLPPP

groups, each MLPPP group containing 32 MLPPP links

Providing the timeslot cross connection function

Receiving timing signals from upper-level equipment and sending them to the GCUa/GCGa


Slots 14–19 and 24–27 are available for the PEUa boards.


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FG2a RNC Packet over Electrical 8-port FE or 2-port GE Ethernet Interface Unit REV:a

Providing 8 FE ports or 2 GE electrical ports

Providing IP over FE or IP over GE

Slots 14–19 and 24–27 are available for the FG2a boards.

GOUa RNC 2-port Packet over Optical GE Ethernet Interface Unit REV:a

Providing 2 GE optical ports Providing IP over GE

Slots 14–19 and 24–27 are available for the GOUa boards.

NOTE

The RSS can be configured with one or two OMUa boards. In the latter case, the two boards work in active/standby mode.

3.2.5 RBS SubrackThe optional RBS is configured in the RSR or RBR. An RBS is a basic service processing subrack of the BSC6810. Working as the extension subrack of the RSS, the RBS is used to extend the service processing capability of the BSC6810. This subrack has the following functions:

Processing signaling on the control plane

Processing and distributing service data on the user plane

Providing physical transmission on the Iub, Iur, and Iu interfaces

Figure 3-1 shows the boards in the RBS.

Figure 3-1 Boards in the RBS

1311975310 2 4 6 8 10 12

2725232119171514 16 18 20 22 24 26

SPUa

SPUa

DPUb

DPUb

DPUb

DPUb

SCUa

SPUa

SPUa

SPUa

SPUa

SCUa

DPUb

DPUb

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT

RINT


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The RBS provides 28 slots. The RBS holds all types of boards in the RSS except the CSUa, GCUa/GCGa, and OMUa.

NOTE

In an RBS, slots 0 and 1 in the RBS are configured with SPUa boards, slots 12 and 13 with DPUb boards, and slots 24–27 with RINTs.

3.3 Logical StructureThe BSC6810 consists of the following functional modules:

Internal Switching Module

User Plane Data Processing Module

Control Plane Data Processing Module

Clock Module

Transmission Interface Module

OM Module

3.3.1 Internal Switching ModuleThe internal switching module is implemented mainly by the SCUa board. The SCUa in the RSS performs first-level switching and that in the RBS performs second-level switching. Thus, the BSC6810 provides internal MAC switching at two levels. The two-level switching enables full connection between all modules of the BSC6810.

3.3.2 User Plane Data Processing ModuleThe user plane data processing module is implemented mainly by the DPUb and CSUa boards. This module performs protocol processing at each layer on the user plane data for the RNC.

The CSUa performs the following protocol processing on MBMS services:

Packet Data Convergence Protocol (PDCP)

Radio Link Control (RLC)

The DPUb performs the following protocol processing on other services:

Frame Protocol (FP)

Macro Diversity Combining (MDC)

MAC

RLC

PDCP

Iu User Plane (Iu UP) protocols

The DPUb is configured in both the RSS and the RBS. The CSUa is configured only in the RSS.


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3.3.3 Control Plane Data Processing ModuleThe control plane data processing module is implemented mainly by the SPUa board. This module processes control plane signaling on each interface for the RNC. The processed messages are of the following types:

Radio Access Network Application Part (RANAP)

NodeB Application Part (NBAP)

Radio Network Subsystem Application Part (RNSAP)

Radio Resource Control (RRC)

Service Area Broadcast Protocol (SABP)

The SPUa is configured in both the RSS and the RBS.

3.3.4 Clock ModuleThe clock module is implemented mainly by the GCUa/GCGa board and the clock processing units of other boards. This module provides the clock for the operation of the RNC, generates RFN signals, and provides NodeBs with timing signals.

The GCUa/GCGa is configured only in the RSS. If the RNC requires GPS signals, the GCGa must be configured.

3.3.5 Transmission Interface ModuleThe transmission interface module is implemented mainly by the AEUa, AOUa, UOIa, PEUa, FG2a, or GOUa board. This module provides the transmission interface between the BSC6810 and other NEs. In addition, it performs related protocol processing on the transport network layer. For ATM transport, the AAL2 and ATM Adaptation Layer 5 (AAL5) are terminated at the transmission interface module. For IP transport, this module processes User Data Protocol (UDP) and IP messages and forwards IP messages on the control plane.

3.3.6 OM ModuleThe OM module is implemented mainly by the LMT, Back Administration Module (BAM), and related modules of host boards. This module performs operation and maintenance of the BSC6810.

3.4 Hardware ConfigurationThe BSC6810 adopts the modular design based on the SPM. An SPM consists of two SPUa boards and two DPUb boards. The two SPUa boards work in 1:1 redundancy mode, and the two DPUb boards work as a resource pool. Through the addition of SPMs, the capacity of the BSC6810 can be increased smoothly with no interruption of ongoing services. The RSS can be configured with up to two SPMs, and an RBS can be configured with up to three SPMs. The BSC6810 can be configured with up to 17 SPMs.


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3.4.1 Minimum ConfigurationFigure 3-1 shows the minimum configuration of the BSC6810. In this configuration, the BSC6810 needs only one RSR that has only the RSS. The minimum configuration applies to an early stage of construction of a commercial network.

Figure 3-1 Minimum configuration of the BSC6810

RSS

Cabinet 1

Empty

Empty

The maximum capacity of the BSC6810 in minimum configuration is as follows:

6,000 Erlang voice traffic or 384 Mbit/s (UL + DL) PS data capacity

200 NodeBs

600 cells

3.4.2 Maximum ConfigurationFigure 3-1 shows the maximum configuration of the BSC6810. In this configuration, the BSC6810 needs two cabinets, that is, one RSR and one RBR. You can add RBSs to expand the system capacity smoothly.

Figure 3-1 Maximum configuration of the BSC6810

RBS

Cabinet 2

RBS

RBS

RSS

Cabinet 1

RBS

RBS


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The maximum capacity of the BSC6810 in maximum configuration is as follows:

51,000 Erlang voice traffic or 3,264 Mbit/s (UL + DL) PS data capacity

1,700 NodeBs

5,100 cells

3.4.3 Typical ConfigurationsTable 3-1 shows the typical configurations of the BSC6810. You can choose a typical configuration as required.

Table 3-1 Typical configurations of the BSC6810

Number of Subracks

Number of SPMs

BHCA Voice Traffic (Erlang)

PS (UL + DL) Data Capacity (Mbit/s)

Number of NodeBs

Number of Cells

1 RSS 2 160,000 6,000 384 200 600

1 RSS+ 1 RBS 5 400,000 15,000 960 500 1,500

1 RSS+ 2 RBSs 8 640,000 24,000 1,536 800 2,400

1 RSS+ 3 RBSs 11 880,000 33,000 2,112 1,100 3,300

1 RSS+ 4 RBSs 14 1,120,000 42,000 2,688 1,400 4,200

1 RSS+ 5 RBSs 17 1,360,000 51,000 3,264 1,700 5,100

Note:BHCA: Busy Hour Call Attempt

NOTE

The values of BHCA and voice traffic are calculated based on Huawei traffic model.


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4 Operation and Maintenance


OM Structure

OM Functions

4.2 OM StructureFigure 4-1 shows the OM system of the BSC6810. The system consists of the Front Administration Module (FAM), BAM, OM terminals and alarm box. These components are described as follows:

The FAM consists of the boards in the RSS and RBSs. It is the OM object entity.

The physical entity of the BAM is the OMUa boards in the RSS. The BAM collects and processes OM information and sends the information to LMTs and the iManager M2000.

The LMTs are OM terminals of the BSC6810. The iManager M2000 is a centralized OM system.

The alarm box provides audible and visible alarms.


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Figure 4-1 OM system of the BSC6810

VLAN

BAM

iManager M2000

LMTLMT

FAM

OM system of the BSC6810

Alarm box

VLAN

IP

BAM: Back Administration Module FAM: Front Administration ModuleLMT: Local Maintenance Terminal IP: Internet ProtocolVLAN: Virtual Local Area Network

The LMT is the OM terminal on the NE side. It accesses the BAM through Virtual Local Area Network (VLAN), intranet, Internet, or modem.

The LMT is an intelligent Man Machine Language (MML) client working in GUI mode. It provides the BSC6810 with the following functions:

Security management

Configuration management

Maintenance management

Fault detection

Performance management

Alarm management

Loading management

Status monitoring

Message tracing

Log management

Software management

Through an external alarm box, the LMT can provide audible and visible alarms if failures occur.


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4.3 OM FunctionsThe BSC6810 provides MML commands and GUIs as an interface for system management, configuration, maintenance, alarm management, and so on. Such an interface is explicit and easy to use. In addition, the BSC6810 can check the data integrity of an MML command to be run.

This section describes the following OM functions:

Security Management

Configuration Management

Maintenance Management

Fault Detection

Performance Management

Alarm Management

Loading Management

Status Monitoring

Message Tracing

Log Management

Software Management

4.3.1 Security ManagementBSC6810 security management provides the following functions:

Grade-based operator right setting

You can set the operator right, operation time limit, and password to ensure system security and operation flexibility.

Operator information protection

If no operation is performed during a certain period, the user interface is automatically locked.

4.3.2 Configuration ManagementThe BSC6810 provides certain functions for configuration management. These functions are described in the following parts.

Automatic Data Configuration

The BSC6810 can automatically generate the configuration data that is necessary for internal physical and logical connections and configure the data for the corresponding parts. No manual configuration is required. You need to configure only the data for connections between the BSC6810 and external devices, thus improving the serviceability of the BSC6810.

Online and Offline Data Configuration

The BSC6810 supports the following configuration modes:

Offline data configuration


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Configuration data is stored only in the BAM. The data is not sent to the host before being loaded to the host. Therefore, this mode increases the efficiency of configuring a large amount of data. The BSC6810 also supports offline data configuration based on host subracks. Therefore, it allows capacity expansion without interrupting services.

Online data configuration

Configuration data is sent to the host immediately after the configuration. There is no need to reset the BSC6810 or to reload the data. Thus, dynamic data configuration is enabled.

Dynamic Batch Data Configuration

The BSC6810 supports dynamic configuration of data in batches. With this function, the batch data configuration scripts are executed when the BSC6810 is offline. After the BSC6810 switches to online mode, the BAM sends all the configuration data to the host in batches. The data takes effect with no need of restarting or resetting the subracks or boards. This avoids interrupting the ongoing services. In the case of bulk data modification, such as NodeB reparent and change of interface board types, dynamic batch data configuration improves efficiency.

Data Configuration Right Control

Under data configuration right control, only one user has the right to perform data configuration for the BSC6810 at any time. The configuration is allowed on only one configuration console at a time, that is, either on the LMT or on the M2000.

With the control, data configuration on the LMT and that on the M2000 are not allowed at the same time, thus improving the reliability of the BSC6810.

Data Configuration Rollback

The BSC6810 provides the data configuration rollback function. If data configuration fails to achieve the expectation or even causes equipment or network exceptions, you can perform rollback to restore the configurations soon for the proper running of the BSC6810.

Data Backup

When two OMUa boards are configured, they work in active/standby mode. The BSC6810 synchronizes the data on the standby OMUa with that on the active OMUa. The BSC6810 supports automatic and manual data backup. It provides a data backup and recovery tool.

Data Validity Check

The BSC6810 can check the integrity and consistency of configuration data, such as the data of a cell.

Configuration Data Query

The BSC6810 supports the object-based query of configuration data.


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Online Reconfiguration of the RINT and Redundancy Mode

The BSC6810 supports online reconfiguration of the RINT and of the board and port redundancy mode, thus facilitating reconfiguration of services.

Automatic Assignment of IP Addresses to a NodeB

When ATM transport is applied to the Iub interface, the BSC6810 can use the Bootstrap Protocol (BOOTP) to automatically assign the OM IP address to a NodeB.

When IP transport is applied to the Iub interface, the BSC6810 can use the Dynamic Host Configuration Protocol (DHCP) to automatically assign the OM IP address to the NodeB.

Compared with BOOTP, DHCP has relatively powerful functions. In addition, DHCP is compatible with BOOTP.

Network Parameter Setting

The radio network parameters of the BSC6810 are of two types: RNC-oriented and cell-oriented. They can adapt to different radio environments.

4.3.3 Maintenance ManagementThe BSC6810 provides certain functions for maintenance management. These functions are described in the following parts.

Board Maintenance

The BSC6810 supports the following board maintenance functions:

Resets on different levels, including equipment reset, subrack reset, board reset, and subsystem reset

Query of board reset causes

Hot swap

Setting of boards to the out-of-service state for troubleshooting

Query of board status and version information

Board self-detection and board diagnosis test

Query of the Central Processing Unit (CPU) usage of a board subsystem

Forced active/standby board switchover initiated on the LMT

Object Status Query

The BSC6810 supports the query of the status of certain objects, the reasons for status changes, and the time of status changes. The objects are as follows:

Equipment objects, such as boards, subsystems, digital signal processors, clocks, optical ports, and BAM

Physical transmission resource objects, such as E1/T1 links, IMA links, and UNI links

IP transport links, such as PPP links and MLPPP links

Logical transmission resource objects, such as Signaling ATM Adaptation Layer (SAAL) links, Stream Control Transmission Protocol (SCTP) links, Message


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Transfer Part level 3 - Broadband (MTP3-B) links, AAL2 paths, IP paths, NodeB Control Ports (NCPs), and Communication Control Ports (CCPs)

Radio resource objects, such as cells and channels

Panel Emulation

The emulated panel on the LMT interface can display the status of Light Emitting Diodes (LEDs) on boards, external physical ports, and digital signal processors.

Forced Handover

Using a forced handover command, the BSC6810 can hand over all the services from one cell to another without call drops.

Physical Link Maintenance

The BSC6810 supports the status query and loopback test of physical links.

Logical Link Maintenance

The BSC6810 supports the following logical link maintenance functions:

Status query, activation, and deactivation of Signaling System No. 7 (SS7) signaling links

Status query of SAAL links

Status query, blocking, unblocking, and reset of AAL2 traffic channels

Status query of IMA groups, UNI links, and IMA links

Loopback test function

SS7 Signaling Point Maintenance

The BSC6810 supports maintenance of SS7 signaling points. The maintenance includes query, inhibit and uninhibit of Destination Signaling Points (DSPs).

Out-of-Service NodeB Measurement

If a NodeB is out of service, it is unavailable.

The BSC6810 supports the measurement of out-of-service duration and out-of-service ratio. The measurement results can be used to analyze the general serving state of NodeBs.

NodeB Blocking and Unblocking

The BSC6810 can block a NodeB by deactivating all of the cells controlled by this NodeB. The BSC6810 can also unblock a NodeB by activating all of the cells controlled by this NodeB.

VIP Cell and NodeB Guarantee

The BSC6810 can provide OM guarantee and service guarantee for VIP cells and NodeBs. Thus, the VIP cells and NodeBs can run stably with high quality of service.


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OM guarantee means monitoring VIP cells and NodeBs through detailed monitoring items on a specific interface, so that the maintenance engineers can identify faults rapidly and rectify them efficiently.

Service guarantee means providing special network planning and configuration for VIP cells and NodeBs, so that they can provide better services. The resources shared between VIP cells, VIP NodeBs, common cells, and common NodeBs are offered preferentially to VIP cells and VIP NodeBs.

Remote Maintenance

The BSC6810 supports remote maintenance by allowing remote access through the Internet or Virtual Private Network (VPN).

Provision of OM Channels for the NodeB

The BSC6810 provides the following OM channels for the NodeB:

Transparent OM channels, through which you can operate and maintain the NodeB on the BSC6810 LMT or on the M2000

Reverse OM channels, through which you can operate and maintain other NodeBs on the local NodeB

4.3.4 Fault DetectionThe BSC6810 provides physical layer fault detection, data link layer fault detection, and other fault detection.

Physical layer fault detection covers the following aspects:

Local E1 loopback test

Remote E1 loopback test

E1 Bit Error Rate (BER) test

E1 loopback detection

E1 misconnection test

SDH loopback detection

Data link layer fault detection covers the following aspects:

AAL2 path fault detection

IP path fault detection

SAAL fault detection

SCTP fault detection

PPP/MLPPP misconnection test

NodeB OM IP over ATM (IPoA) fault detection

Iu-PS IPoA fault detection

Other fault detection covers the following aspects:

Inter-Process Communication (IPC) connectivity detection

Cell common channel fault detection

RFN fault detection


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Clock fault detection

Board loading control fault detection

4.3.5 Performance ManagementThe BSC6810 provides various performance counters for the upper-layer network management system to facilitate performance analysis and network optimization.

By default, the BSC6810 supports two measurement periods. One is the normal period whose duration is 30 minutes, and the other is the short period whose duration is five minutes. The latter is used to monitor Key Performance Indicators (KPIs) in real time.

Through the measurement control switch, you can select a measurement period. A measurement item supports both measurement periods, that is, a measurement item can be included in both normal-period task and short-period task.

You can register various performance measurement tasks on the M2000. The BSC6810 can store measurement results generated in the past 72 hours.

4.3.6 Alarm ManagementThe BSC6810 provides advanced fault diagnosis and handling methods, performs relevance analysis of alarms raised from the host, and reports valid alarms to the user.

The BSC6810 provides certain functions for alarm management. These functions are described in the following parts.

Alarm Processing

You can browse alarm information in real time, query history alarm information, and store alarm information. The online help provides detailed troubleshooting methods for each alarm.

The BSC6810 can store the history alarm information generated in the past 90 days and at most 100,000 alarms.

Alarm Masking

The BSC6810 allows you to mask derived alarms to reduce the number of reported alarms.

Alarm Filtering

The BSC6810 can filter the alarms of a specific object. If an object is filtered, the alarms of this object are not sent to the alarm management system.

Alarm Indication

When a fault alarm occurs, the BSC6810 can notify you in the following ways:

Blinking of the icon

Audible indication of the terminal

Audible and visible indications of the alarm box


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Classified Alarm Management

The BSC6810 supports classified management of alarms raised from normal cells and NodeBs and from others. The latter can be the following cells and NodeBs:

Those under commissioning

Those not put into use

4.3.7 Loading ManagementThe following two modes are available for loading program files and data files onto boards of the BSC6810:

Loading from the flash memory of the boards

Loading from the BAM

The mode of loading program files and data files onto a board depends on the consistency between the files in the flash memory of the board and those in the BAM.

If they are consistent, the board loads the files from its flash memory.

If they are inconsistent, the board loads the files from the BAM and updates the files in the flash memory of the primary workspace on the board, so as to ensure the program and data consistency.

4.3.8 Status MonitoringThe BSC6810 can monitor the system status in real time, including CPU usage, cell performance, connection performance, link performance, and board resources.

The BSC6810 can monitor cell performance as follows:

Pilot transmit (TX) power of the Primary Common Pilot Channel (P-CPICH)

Uplink (UL) Received Total Wideband Power (RTWP)

Downlink (DL) frequency TX power

Number of UEs, including UEs on Dedicated Channels (DCHs), UEs on common channels, HSDPA UEs, and HSUPA UEs

Node synchronization

UL CAC

DL CAC

UL equivalent number of users

DL equivalent number of users

Usage of the code tree

Minimum High Speed Downlink Shared Channel (HS-DSCH) power requirement

Bit rate provided by the HS-DSCH

Bit rate provided by the Enhanced Dedicated Channel (E-DCH)

The BSC6810 can monitor connection performance as follows:

Signal-to-noise ratio and receive (RX) signal code power of a cell

Measurement value of Signal-to-Interference Ratio (SIR) of a UL radio link set

SIR target of a UL radio link set

SIR error value of a UL radio link set


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Block Error Rate (BLER) of a UL transport channel

BLER of a DL transport channel

DL code TX power

UE TX power

BER of a UL physical channel

UL traffic volume

DL traffic volume

UL throughput and bandwidth

DL throughput and bandwidth

Handover delay

Adaptive Multi Rate (AMR) mode

The BSC6810 can monitor performance of the following links:

IMA groups

UNI links

Fractional ATM links

SAAL links

IPoA Permanent Virtual Channels (PVCs)

AAL2 paths

FE/GE traffic

Traffic on PPP links

Traffic on MLPPP links

Traffic on SCTP links

The BSC6810 can monitor the board resource, that is, the license.

4.3.9 Message TracingThe BSC6810 can perform the following types of message tracing:

Message tracing on standard interfaces

Message tracing on the transport network layer

UE message tracing

Cell message tracing

Intra-system inter-module message tracing

Message tracing on the serial port after redirection

Call Data Tracing (CDT)

Positioning message tracing

The function of message tracing is integrated in the LMT, which facilitates problem location. The BSC6810 also provides a tool named Trace Viewer, which allows you to view the stored messages.

4.3.10 Log ManagementVarious logs are available for you to know the running of the BSC6810 and to troubleshoot faults.


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The BSC6810 provides the following logs:

Operation log: records the operation information of operators in real time.

Running log: records the running information of the BSC6810 in real time.

Subscriber log: records the calling procedure information, which is output to the BAM for problem identification in case of calling failure.

Cell log: records the cell procedure information, which is output to the BAM for problem identification in case of cell abnormality.

4.3.11 Software ManagementThe BSC6810 provides certain functions for software management. These functions are described in the following parts.

Online Patching

The BSC6810 supports online patching. Especially, the BSC6810 supports online hot patching without disrupting ongoing services.

Patches are provided in patch packages. The BSC6810 supports totally and, in some cases, partially one-push solution to facilitate the upgrade. In addition, it supports version rollback, which guarantees the stability of the system.

Remote Upgrade

The BSC6810 supports remote upgrade. You can upgrade it on a remote terminal. In addition, the BSC6810 provides automatic upgrade tools, which can reduce human interference and errors.

Remote BAM Patching

The BSC6810 supports remote BAM patching. You can perform the following operations on a remote terminal:

Patching the BAM

The patches include Windows operating system patches of hotfix type and BAM software patches.

Querying all the patches on the BAM through MML commands

Online Expansion

The BSC6810 supports online addition of RBSs or service processing boards to expand the capacity without disrupting ongoing services. After startup, the board can automatically load programs, obtain intra-system connection data and configuration data, and enter the serving state.

Batch Command Processing

The BSC6810 supports the editing and modification of commands in batches.

Scheduled Task Processing

The BSC6810 supports scheduled tasks. You can preset commands in the system. The system will automatically run the commands at the preset time.


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Online Help

The BSC6810 provides the GUI-based online help.


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5 Reliability


System Reliability

Hardware Reliability

Software Reliability

5.2 System ReliabilityThe system reliability design of the BSC6810 takes into account the following measures:

Load control

The system performs load control based on the CPU usage, traffic over each interface, and radio resource load of the system. In this way, the system reliability is ensured in the case of CPU overload and resource congestion.

Port trunking

SCUa boards support port trunking. This function allows data backup in case of link failure, thus preventing inter-plane switchover and cascading switchover and improving the reliability of intra-system communication.

Dual planes for timing signal transmission

The BSC6810 provides the dual planes for transmission of timing signals between the GCUa/GCGa and SCUa boards.

The active and standby GCUa/GCGa boards are connected to the active and standby SCUa boards through the Y-shaped cables. This connection mode ensures proper working of the timing signals for the system if a single-point failure occurs to the GCUa/GCGa, cable, or SCUa. In addition, with the Y-shaped cable, switchover of GCUa/GCGa boards does not affect the SCUa.

Transmission port redundancy

− Unchannelized optical ports support Multiplex Section Protection (MSP) 1:1 or MSP 1+1 port redundancy.

− Channelized optical ports support MSP 1:1 port redundancy.


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− FE or GE ports support port redundancy and load sharing between the ports.

All these improve the reliability of transmission.

OM dual planes

To improve the reliability of OM channels, the BSC6810 provides the OM dual planes, including dual OMUa boards, dual Ethernet adapters, and dual main control boards.

Crystal Aging Compensation technology

The BSC6810 adopts the Huawei-patented Crystal Aging Compensation technology to compensate for frequency deviation caused by the aging of temperature-constant crystal oscillators. This technology protects the clock precision from the influence of the aging of the crystal oscillators and ensures long-term stability and reliability of the system clock.

Dual –48 V power supplies

The two independent –48 V power supplies operate at the same time to ensure normal operations in case either of them fails. The failed supply can be restored without a power cut. This improves the reliability and availability of the power system.

5.3 Hardware ReliabilityThe BSC6810 adopts the reliability design such as board and port redundancy and load sharing. In addition, it improves the reliability and maintainability by optimizing the fault detection and isolation techniques for boards and the whole system. The hardware reliability design of the BSC6810 takes into account the following measures:

The system uses the multi-level cascaded and distributed cluster control mode. Several CPUs form a cluster processing system. Each module has distinct functions. The communication channels between modules are of the redundancy design or anti-suspension/breakdown design.

The system uses the redundancy design, as shown in Table 5-1, to support hot swap of boards and redundancy of important modules. Therefore, the system has great error tolerance.

Table 5-1 Parts redundancy

Part Redundancy Mode

CSUa Board redundancy

GCUa/GCGa Board redundancy

SCUa Board redundancy + Port trunking on GE ports

SPUa Board redundancy

AOUa Board redundancy + MSP 1:1 optical port redundancy

UOIa Board redundancy + MSP 1:1 or MSP 1+1 optical port redundancy

FG2a Board redundancy


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Part Redundancy Mode

GOUa Board redundancy

GE port on the FG2a/GOUa Port redundancy or load sharing

FE port on the FG2a Port redundancy or load sharing

OMUa Board redundancy

DPUb Board resource pool

When an entity fails, the isolation mechanism transfers the services to another entity for processing. After the system finds a faulty board in the resource pool, it isolates the board. Then another board in the resource pool will process the subsequent services.

When a board with a single function fails, restarting the system might clear the fault.

The Watchdog Timer (WDT) module on each board supports leveled reset, that is, the key chip, the satellite signal receiving card, a sub-board or port can be reset separately.

The system uses the non-volatile memory to store important data.

With advanced integrated circuits such as Application Specific Integrated Circuits (ASICs), the system features high integration, good technology, and high reliability. For example, all the network chips in the boards use ASICs designed by Huawei. These ASICs provide internal fault detection and reporting on the chip level.

All the parts of the system pass the aging test. The process of hardware assembly is strictly controlled. These methods ensure the high stability and reliability for long-term operation.

5.4 Software ReliabilityThe error tolerance ability of the software system indicates the software reliability. In other words, the whole system can keep on working in case of software failure. This indicates that the system has self-healing ability. The BSC6810 derives this ability from the following aspects:

Regular check of important resources

Usage check is provided for various software resources in the system. If a resource is unavailable because of a software error, the unavailability lasts only a short time. The reason is that the check mechanism ensures the release of this resource and the output of logs and alarms.

Task monitoring

During the running of software, the BSC6810 monitors the internal errors of all software and some hardware faults, if any. It then reports the errors and faults to the OM system.

Load sharing

The FG2a and GOUa support inter-board load sharing between ports.


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The DPUb boards or digital signal processors in an SPM work in resource pool mode. If a DPUb fails, the services processed by this DPUb are scheduled to another DPUb for processing. The same is true of a digital signal processor.

Data check

The system is able to perform regular or event-driven check for data consistency and output the related log records and alarms.

Dual versions

The boards of the BSC6810 have active/standby workspaces. The active workspace stores the current version files, and the standby workspace stores the version files other than those in the active workspace. Switchover between the active and standby workspaces can be performed to upgrade or roll back the RNC version. Therefore, the active and standby workspaces facilitate the upgrade of and rollback for the RNC and greatly reduce the time of service interruption caused by the upgrade.

Data backup

The BAM data and FAM data can be backed up, so that the reliability and consistency of the data are ensured.

Storage of operation log information

The BSC6810 records the operations that you perform and saves them in the operation log. You can use the operation log to identify and clear errors or faults caused by operations.

Flow control

The BSC6810 automatically controls the flows on the Iub, Iur, and Iu interfaces to avoid overload caused by heavy traffic.


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6 Technical Specifications

6.1 About This Chapter

This chapter consists of the following sections:

Performance Specifications

Transmission Port Specifications

GPS Feeder Specifications

Reliability Specifications

Structural Specifications

Electrical Specifications

Power Consumption in Typical Configurations

Clock Specifications

Noise and Safety Compliance

International Protection Specifications

Environmental Requirements

6.2 Performance Specifications

Table 6-1 describes the performance specifications for the BSC6810.

Table 6-1 Performance specifications

Item Specification

Maximum number of cabinets

2, that is, 1 RSR and 1 RBR

Maximum number of subracks

6, that is, 1 RSS and 5 RBSs

BHCA 1,360,000 (calculated based on Huawei traffic model)


RNC V200R009

System Description

Item Specification

Maximum voice traffic 51,000 Erlang (calculated based on Huawei traffic model)

PS data capacity (UL + DL) 3,264 Mbit/s

Maximum number of NodeBs

1,700

Maximum number of cells 5,100

6.3 Transmission Port SpecificationsTable 6-1 describes the transmission port specifications for the BSC6810.

Table 6-1 Transmission port specifications

Transmission Type

Standard Board or Port Type

Connector

Remarks

E1/T1ITU-T G.703/G.704

AEUa DB44The AEUa provides 32 E1s/T1s for ATM transport on the Iub interface.

PEUa DB44The PEUa provides 32 E1s/T1s for IP transport on the Iub interface.

Channelized STM-1/OC-3

ITU-T G.707 ITU-T I.432.1 ITU-T I.432.2

AOUa LC/PC

The AOUa provides 2 channelized STM-1/OC-3 optical ports for ATM transport on the Iub interface.

Unchannelized STM-1/OC-3c

ITU-T G.957 ITU-T I.432.1 ITU-T I.432.2

UOIa LC/PC

The UOIa provides 4 unchannelized STM-1/OC-3c optical ports for ATM transport on the Iub, Iur, and Iu interfaces.

FE IEEE 802.3FE port on the FG2a

RJ45The FG2a provides 8 FE ports for IP transport on the Iub, Iur, and Iu interfaces.

GE IEEE 802.3

GE electrical port on the FG2a

RJ45The FG2a provides 2 GE electrical ports for IP transport on the Iub, Iur, and Iu interfaces.

GE optical port on the GOUa

LC/PCThe GOUa provides 2 GE optical ports for IP transport on the Iub, Iur, and Iu interfaces.


RNC V200R009

System Description

NOTE

The maximum transmission distances of different port types are as follows:

E1/T1 port: 500 m

STM-1 port: 15 km

FE port: 100 m

GE optical port on the GOUa: 15 km

6.4 GPS Feeder SpecificationsThe BSC6810 provides GPS feeders of the following specifications:

Length of the GPS feeder < 100 m

100 m < length of the GPS feeder < 300 m

300 m < length of the GPS feeder < 500 m

6.5 Reliability SpecificationsTable 6-1 describes the reliability specifications for the BSC6810.

Table 6-1 Reliability specifications

Item Specification

System inherent availability 99.999%

Mean Time Between Failures (MTBF) 347,700 h

System restarting time 10 min

Mean Time To Repair (MTTR) 1 h

6.6 Structural SpecificationsTable 6-1 describes the structural specifications for the BSC6810.

Table 6-1 Structural specifications

Item Specification

Cabinet standardThe structural design conforms to the IEC60297 standard and IEEE standard.

Dimensions of a cabinet

N68-22 cabinet: 2,200 mm (height) x 600 mm (width) x 800 mm (depth)

N68-21-N cabinet: 2,133 mm (height) x 600 mm (width) x 800 mm (depth)


RNC V200R009

System Description

Item Specification

Height of the available space in a cabinet

N68-22 cabinet: 46 U N68-21-N cabinet: 44 U

Weight of a single cabinet 350 kg

Load bearing capacity of the equipment room

450 kg/m2

6.7 Electrical SpecificationsTable 6-1 describes the electrical specifications for the BSC6810.

Table 6-1 Electrical specifications

Item Specification

Power supply specifications–48 V DC power; input voltage range: –40 V to –57 V

Electro Magnetic Compatibility (EMC) specifications

Meets the requirements in ETSI EN300 386 and Council directive 89/336/EEC

RSS power consumption 1,570 W

RBS power consumption 1,540 W

Power consumption of the RSR in full configuration

4,650 W

Power consumption of the RBR in full configuration

4,660 W

6.8 Power Consumption in Typical ConfigurationsTable 6-1 describes the specifications for power consumption of the BSC6810 in typical configurations.

Table 6-1 Specifications for power consumption in typical configurations

Number of Subracks

Iu/Iur/Iub ATM Optical Transport with Ports in Redundancy

Iu/Iur/Iub GE Optical Transport Without Ports in Redundancy

Voice Traffic (Erlang)


Number of cells

1 RSS 1,570 W 1,260 W 6,000 384 600

1 RSS + 1 RBS 3,110 W 2,400 W 15,000 960 1,500


RNC V200R009

System Description

Number of Subracks

Iu/Iur/Iub ATM Optical Transport with Ports in Redundancy

Iu/Iur/Iub GE Optical Transport Without Ports in Redundancy

Voice Traffic (Erlang)


Number of cells

1 RSS + 2 RBSs 4,650 W 3,540 W 24,000 1,536 2,400

1 RSS + 3 RBSs 6,230 W 4,720 W 33,000 2,112 3,300

1 RSS + 4 RBSs 7,770 W 5,860 W 42,000 2,688 4,200

1 RSS + 5 RBSs 9,310 W 7,000 W 51,000 3,264 5,100

6.9 Clock SpecificationsThe precision of the clock for the BSC6810 meets the associated requirements of the stratum 3 clock.

6.10 Noise and Safety ComplianceTable 6-1 describes the noise and safety compliance for the BSC6810.

Table 6-1 Noise and safety compliance

Item Specification

Noise< 72 dB; fulfilling the requirements in EUROPEAN ETS 300 753.

Safety

Fulfilling the requirements in: IEC 60950-1 EN 60950-1 UL60950-1 EN 60825-1 EN 60825-2 AS/NZS 60950-1 GB4943-2001

6.11 Environmental Protection SpecificationsThe environmental protection specifications for the BSC6810 are as follows:

RoHS: Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment


RNC V200R009

System Description

WEEE: The EU Directive on Waste of Electrical and Electronic Equipment

6.12 International Protection SpecificationsThe international protection degree of the BSC6810 is IP50.

6.13 Environmental RequirementsThe storage, transportation, and working environments of the BSC6810 conform to the following standards:

GB2423.1-1989

GB2423.2-1989

GB2423.4-1993

GB2423.22-1987

GB/T13543

ETS 300 019

NEBS GR-63-core

6.13.1 Storage EnvironmentThis section describes the storage environment requirements for climate, waterproofing conditions, biological environment, air purity, and mechanical stress.

Climatic Requirements

Table 6-1 describes the climatic requirements for storing the BSC6810.

Table 6-1 Climatic requirements for storing the BSC6810

Item Specification

Temperature –40°C to +70°C

Temperature change rate 1°C/min

Relative humidity 10% to 100% RH

Altitude 5,000 m

Air pressure 70 kPa to 106 kPa

Solar radiation 1,120 W/m²

Thermal radiation 600 W/m²

Wind speed 30 m/s


RNC V200R009

System Description

Waterproofing Requirements

The waterproofing requirements for storing the BSC6810 are as follows:

The equipment is usually stored in a room.

There is no water on the ground of the room and no probability of water entering the package.

In the equipment room, there is no water that may damage the equipment, such as water from automatic fire protection devices or air conditioner.

If the equipment has to be placed outdoors, ensure that:

The package is intact.

Waterproofing measures are taken to prevent rainwater from entering the package.

There is no water on the ground and no water may enter the package.

The package is not exposed to direct sunlight.

Biological Requirements

The biological requirements for storing the BSC6810 are as follows:

No fungus or mildew may grow in the equipment room or near the equipment.

The place is free from rodents, such as rats.

Air Purity Requirements

The air purity requirements for storing the BSC6810 are as follows:

The air is free from explosive, conductive, magnetically conductive, or corrosive dust.

The density of physically active materials must meet the requirements listed in Table 6-1.

The density of chemically active materials must meet the requirements listed in Table 6-2.

Table 6-1 Storage requirements for physically active materials

Physically Active Material

Unit Density

Suspended dust mg/m³ 5.00

Falling dust mg/m²·h 20.0

Sand mg/m³ 300

Note: Suspended dust: diameter 75 m

Falling dust: 75 m diameter 150 m

Sand: 150 m diameter 1,000 m


RNC V200R009

System Description

Table 6-2 Storage requirements for physically active materials

Chemically Active Material

Unit Density

SO2 mg/m³ 0.30

H2S mg/m³ 0.10

NO2 mg/m³ 0.50

NH3 mg/m³ 1.00

Cl2 mg/m³ 0.10

HCl mg/m³ 0.10

HF mg/m³ 0.01

O3 mg/m³ 0.05

Mechanical Stress Requirements

Table 6-1 describes the mechanical stress that the equipment can endure during storage.

Table 6-1 Storage requirements for mechanical stress

Item Sub-item Specification

Sinusoidal vibration

Offset 7.0 mm –

Accelerated speed – 20.0 m/s²

Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteady impact

Impact response spectrum II

250 m/s²

Static payload 5 kPa

Note: Impact response spectrum: maximum acceleration response curve generated by the

equipment under specified impact excitation. Impact response spectrum II means that the duration of semi-sine impact response spectrum is 6 ms.

Static payload: capability of the equipment in package to bear the pressure from the top in normal pile-up method

6.13.2 Transportation EnvironmentThis section describes the transportation environment requirements for climate, waterproofing conditions, biological environment, air purity, and mechanical stress.


RNC V200R009

System Description


Table 6-1 describes the climatic requirements for transporting the BSC6810.

Table 6-1 Climatic requirements for transporting the BSC6810

Item Specification

Temperature –40°C to +70°C


Relative humidity 5% to 100% RH

Altitude 5,000 m


Solar radiation 1,120 W/s²

Thermal radiation 600 W/s²

Wind speed 30 m/s

Waterproofing Requirements

The waterproofing requirements for transporting the BSC6810 are as follows:

The package is intact.

Waterproofing measures are taken to prevent rainwater from entering the package.

There is no water on the floor of the transportation vehicle.


The biological requirements for transporting the BSC6810 are as follows:

No fungus or mildew may grow in the vehicle.



The air purity requirements for transporting the BSC6810 are as follows:





RNC V200R009

System Description

Table 6-1 Transportation requirements for physically active materials


Unit Density

Suspended dust mg/m³ No requirement

Falling dust mg/m²·h 3.0

Sand mg/m³ 100

Note: Suspended dust: diameter 75 μm Falling dust: 75 μm diameter 150 μm Sand: 150 μm diameter 1,000 μm

Table 6-2 Transportation requirements for chemically active materials


Unit Density

SO2 mg/m³ 0.30

H2S mg/m³ 0.10

NO2 mg/m³ 0.50

NH3 mg/m³ 1.00

Cl2 mg/m³ 0.10

HCl mg/m³ 0.10

HF mg/m³ 0.01

O3 mg/m³ 0.05


Table 6-1 describes the mechanical stress that the equipment can endure during transportation.

Table 6-1 Transportation requirements for mechanical stress



Offset 7.5 mm – –

Accelerated speed – 20.0 m/s² 40.0 m/s²

Frequency range 2 Hz to 9 Hz9 Hz to 200 Hz

200 Hz to 500 Hz

Random vibration

Spectrum density of accelerated speed

10 m²/s³ 3 m²/s³ 1 m²/s³


RNC V200R009

System Description


Frequency range 2 Hz to 9 Hz9 Hz to 200 Hz

200 Hz to 500 Hz

Unsteady impact


300 m/s²

Static payload 10 kPa




6.13.3 Working EnvironmentThis section describes the working environment requirements for climate, biological environment, air purity, and mechanical stress.


Table 6-1 and Table 6-2 describe the climatic requirements for operating the BSC6810.

Table 6-1 Climatic requirements for operating the BSC6810 - 1

Temperature Relative Humidity

Normal Safe Normal Safe

0°C to 45°C –5°C to +55°C 5% to 85% RH 5% to 95% RH

Note: The values are measured 1.5 m above the floor and 0.4 m in front of the equipment, without

protective panels in front of or behind the cabinet. Safe refers to continuous operation for not more than 96 hours or accumulated operation for

not more than 15 days in a year.

Table 6-2 Climatic requirements for operating the BSC6810 - 2

Item Specification

Altitude 4,000 m



Solar radiation 700 W/m²

Thermal radiation 600 W/m²


RNC V200R009

System Description

Item Specification

Wind speed 5 m/s


The biological requirements for operating the BSC6810 are as follows:

No fungus or mildew may grow in the area where the equipment is operated.



The air purity requirements for operating the BSC6810 are as follows:




Table 6-1 Working environment requirements for physically active materials


Unit Density

Dust particles Particles/m³ 3 x 104

(no visible dust on the desktop within three days)

Note:Dust particles: diameter 5 m

Table 6-2 Working environment requirements for chemically active materials


Unit Density

SO2 mg/m³ 0.20

H2S mg/m³ 0.006

NH3 mg/m³ 0.05

Cl2 mg/m³ 0.01


Table 6-1 describes the mechanical stress that the equipment can endure during operation.


RNC V200R009

System Description

Table 6-1 Working environment requirements for mechanical stress



Offset 3.5mm –

Accelerated speed – 10.0 m/s²

Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz

Unsteady impact


100 m/s²

Static payload 0





RNC V200R009

System Description

7 Installation


Hardware Installation

Software Installation

7.2 Hardware InstallationDuring hardware installation, adhere to the following principles:

The height of the equipment room is not less than 3,000 mm. The height here refers to the distance between the lowest level of the ceiling and the highest position of the floor.

The aisle between two rows of cabinets is at least 1,000 mm wide.

The distance between the wall and the side/front/back of a cabinet that is closest to the wall is not less than 800 mm.

An aisle at least 1,000 mm wide is reserved in the equipment room.

NOTE

Do not install the cabinet against the wall.


RNC V200R009

System Description

Figure 7-1 shows the schematic drawing of the equipment room.

Figure 7-1 Equipment room layout (unit: mm)

≥ 800

≥ 800

≥ 800

≥ 1000 ≥ 800

NOTE

The BSC6810 supports both overhead cabling and underfloor cabling.

The BSC6810 supports both front and back maintenance.

The BSC6810 does not support back-to-back installation of cabinets. Interconnect the cabinets side by side if necessary.

For details about the environmental requirements of the BSC6810, refer to section 6.13 "Environmental Requirements."

7.3 Software InstallationThe software can be easily installed on the engineering site. Before delivery, plenty of internal data is automatically generated or configured. You need to install only the BAM software and LMT software during either initial installation or upgrade.


RNC V200R009

System Description

A Acronyms and Abbreviations

A

AAL2 ATM Adaptation Layer type 2

AAL5 ATM Adaptation Layer type 5

AMR Adaptive Multi Rate

ASIC Application Specific Integrated Circuit

ATM Asynchronous Transfer Mode

B

BAM Back Administration Module

BER Bit Error Rate

BHCA Busy Hour Call Attempt

BITS Building Integrated Timing Supply System

BLER Block Error Rate

BOOTP Bootstrap Protocol

C

CAC Call Admission Control

CBC Cell Broadcast Center

CCP Communication Control Port

CDT Call Data Tracing

CN Core Network

CPU Central Processing Unit

CS Circuit Switched


RNC V200R009

System Description

D

DCH Dedicated Channel

DHCP Dynamic Host Configuration Protocol

DL Downlink

DSP Destination Signaling Point

E

E-DCH Enhanced Dedicated Channel

EMC Electro Magnetic Compatibility

ETS European Telecommunication Standard

ETSI European Telecommunications Standards Institute

F

FAM Front Administration Module

FE Fast Ethernet

FP Frame Protocol

G

GE Gigabit Ethernet

GPRS General Packet Radio Service

GPS Global Positioning System

GTP-U GPRS Tunneling Protocol for User Plane

GUI Graphic User Interface

H

HARQ Hybrid Automatic Repeat Request

HSDPA High Speed Downlink Packet Access

HS-DSCH High Speed Downlink Shared Channel

HSUPA High Speed Uplink Packet Access

I

IEC International Electrotechnical Commission


RNC V200R009

System Description

IEEE Institute of Electrical and Electronics Engineers

IMA Inverse Multiplexing on ATM

IP Internet Protocol

IPC Inter-Process Communication

IPoA Internet Protocols over ATM

ITU-T International Telecommunication Union - Telecommunication Standardization Sector

K

KPI Key Performance Indicator

L

LAN Local Area Network

LC LC connector

LED Light Emitting Diode

LMT Local Maintenance Terminal

M

MAC Medium Access Control

MBMS Multimedia Broadcast and Multicast Service

MDC Macro Diversity Combining

MGW Media Gateway

MLPPP Multilink Point to Point Protocol

MML Man Machine Language

MSC Mobile Switching Center

MSP Multiplex Section Protection

MTBF Mean Time Between Failures

MTP3-B Message Transfer Part level 3 - broadband

MTTR Mean Time To Repair

N

NBAP NodeB Application Part

NCP NodeB Control Port

NE Network Element


RNC V200R009

System Description

O

OM Operation and Maintenance

P

P-CPICH Primary Common Pilot Channel

PDCP Packet Data Convergence Protocol

PPP Point-to-Point Protocol

PS Packet Switched

PVC Permanent Virtual Channel

Q

QoS Quality of Service

R

RANAP Radio Access Network Application Part

RBR RNC Business Rack

RBS RNC Business Subrack

RFN RNC Frame Number

RLC Radio Link Control

RNC Radio Network Controller

RNSAP Radio Network Subsystem Application Part

RRC Radio Resource Control

RRM Radio Resource Management

RSR RNC Switch Rack

RSS RNC Switch Subrack

RTWP Received Total Wideband Power

S

SAAL Signaling ATM Adaptation Layer

SABP Service Area Broadcast Protocol

SCTP Stream Control Transmission Protocol

SDH Synchronous Digital Hierarchy


RNC V200R009

System Description

SGSN Serving GPRS Support Node

SIR Signal-to-Interference Ratio

SPM Service Processing Module

SRNS Serving Radio Network Subsystem

SS7 Signaling System No. 7

STM-1 Synchronous Transport Mode-1

U

UDP User Data Protocol

UE User Equipment

UL Uplink

UMTS Universal Mobile Telecommunications System

UNI User-Network Interface

UP User Plane

UTRAN Universal Terrestrial Radio Access Network

V

VLAN Virtual Local Area Network

VoIP Voice over IP

VPN Virtual Private Network

W

WCDMA Wideband Code Division Multiple Access


Annex B 8.2.1 RNC System Description RevA

Documents

Transcript of Annex B 8.2.1 RNC System Description RevA