Descripcion Del Producto BSC6900 V900R013_en

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Confidential Information of Huawei. No Spreading Without Permission

BSC6900 V900R013 Product Description

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The interfaces between the BSC6900 UMTS and each NE in the UMTS network are as follows:

Uu: interface between the Universal Terrestrial Radio Access Network (UTRAN) and the UE

Iub interface: interface between the BSC6900 UMTS and the NodeB

Iur interface: interface between the BSC6900 UMTS and other RNCs

Iu-CS interface: interface between the BSC6900 UMTS and the Mobile Switching Center (MSC) or Media Gateway (MGW)

Iu-PS interface: interface between the BSC6900 UMTS and the Serving GPRS Support Node (SGSN)

Iu-BC interface: interface between the BSC6900 UMTS and the CBC

The interfaces between the BSC6900 GSM and each NE in the GSM network are as follows:

Um: interface between the BSC6900 GSM and the MS

Abis: interface between the BSC6900 GSM and the BTS

A: interface between the BSC6900 GSM and the MSC or MGW

Gb: interface between the BSC6900 GSM and the SGSN

The A, Um, and Gb interfaces are standard interfaces and support interconnections with equipment of other vendors.

The BSC6900 GU performs functions such as radio resource management, base station management, power control, and handover control.

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The system capacity of the BSC6900 GU cannot reach the maximum in the UMTS network and GSM network at the same time.

The BSC6900 V900R012 is added with the following new boards: SPUb, XPUb, DPUe, DPUf, SCUb, AOUc, FG2c, GOUc, POUc, and UOIc. Other boards are inherited from the BSC6000 V900R008 and BSC6810 V200R011, and they can be used directly after the BSC6000 or BSC6810 is upgraded to the BSC6900 GU.

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The BSC6900 is compatible with the hardware of the BSC6810 and BSC6000. Through software loading, the BSC6810 and BSC6000 in the existing network can be upgraded to the BSC6900.

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High integration and low cost

The BSC6900 caters to the mobile network requirements for high capacity with few sites, therefore requiring a smaller equipment room and less power consumption. In addition, the BSC6900 meets the increasing requirements of the fast growth of services and protects the investment of the operator.

Easy configuration and convenient maintenance

The BSC6900 has a small variety of boards, such as the interface processing board, OM board, switching processing board, signaling processing board, service processing board, and clock processing board. The simplification of board types reduces the maintenance cost. The interface processing boards and service processing boards are flexible in configuration and easy to maintain and expand because they are not bound.

All-IP platform meeting the varying needs for network evolution

Based on its all-IP platform, the BSC6900 betters the PS service performance. The interfaces support IP transmission, which provides sufficient bandwidth and saves transmission cost. Based on the unified all-IP platform in the UMTS and GSM networks, the BSC6900 UMTS conforms to the growing trend of broadband in the wireless network and meets the requirements for network convergence and evolution.

Smooth evolution for investment protection

The BSC6900 is compatible with the hardware configuration of the BSC6810. Through software loading, the BSC6810 in the existing network can be upgraded to the BSC6900 UMTS. The BSC6900 UMTS can be added with hardware and software of BSC6900 GSM to evolve to BSC6900 GU. This saves the investment of the operator.

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DPI: Deep Packet Inspection

DPI indicates that the first 20 bytes after the UDP/TCP header of a packet are identified after traffic classification on the basis of the quintuple information. The first 20 bytes after the UDP/TCP header contains the key information about the application layer. Therefore, DPI is a feature referred to the application layer.

PTT: Push to Talk

A means of instantaneous communication commonly employed in wireless cellular phone services that uses a button to switch a device from voice transmission mode to voice reception mode. The operation of phones used in this way is similar to "walkie talkie" use.

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In BM/TC combined mode, the BSC is not configured with the TCS. The boards that implement the TC functions are inserted into the slots in the MPS or EPS. With the same capacity, fewer cabinets and subracks are required in the BSC, therefore increasing the hardware integration.

When the BSC is located in a remote equipment room, it is configured in BM/TC separated mode. The BSC is configured with a separate TCS, which is located in a TransCoder Rack (TCR) on the MSC side. Therefore, the transmission resources between the BSC and the MSC are saved.

In A over IP mode, the BSC directly connects to the Huawei core network without using the TC, therefore protecting the operator's investment and improving the voice quality due to the reduction of encoding and decoding. The A over IP mode meets the needs for network evolution.

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The BSC6900 can be flexibly configured as a BSC6900 GSM only, BSC6900 UMTS only, or BSC6900 GU as required in different networks. The BSC6900 GSM, in compliance with the 3GPP R7, operates as an independent NE to access the GSM network and performs the functions of the GSM BSC. With the support of EDGE+, the BSC6900 GSM can be upgraded to the BSC6900 GU through addition of UMTS boards and software upgrade.

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The BSC6900 integrates the two separate OM systems of the traditional GSM network and UMTS network into a uniform OM system, therefore improving the user experience and the efficiency in maintaining the multi-RAT system.

The simple network architecture speeds up troubleshooting and reduces the power consumption, and therefore lowers the OM costs.

The OM system of the BSC6900 uses the web-based LMT, which need not be installed with any OM software. You can connect the LMT to the OMUa to perform OM functions and obtain the online help of the LMT. All the operation results are displayed on the LMT through the web browser.

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With unified transport resource management, bandwidth can be shared by UMTS&GSM.

The BSC6900 enables the transmission bandwidth to be shared between the GSM network and the UMTS network. In this way, the utilization of transmission bandwidth increases by 5% to 10%.

The BSC6900 supports the following flexible transmission modes shared between the GSM

network and the UMTS network:

Abis/Iub over IP

2G/3G co-transmission based on TDM timeslot switching

A/Iu-CS over IP

Gb/Iu-PS over IP

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The Co-Radio Resource Management (CoRRM) algorithm performs unified management and intelligent scheduling on the radio resources in the GSM network and UMTS network.

The traditional CoRRM algorithm exchanges the 2G/3G load information between the GSM network and the UMTS network through signaling procedures across the core networks.

The enhanced CoRRM algorithm of Huawei enables rapid transmission of 2G/3G load information (used as internal messages) within the BSC6900. The advantages are as follows:

Reducing delay, adjusting the load in real time, and increasing the success rate of inter-RAT handovers

Decreasing the signaling flow on the standard interface and saving interface resources

Enabling radio resource sharing between GSM and UMTS and therefore increasing the network capacity

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ItemItemItemItem SpecificationSpecificationSpecificationSpecificationDimensions 2,200 mm x 600 mm x 800 mm (H x W x D)

Height of the available space 46 U

Cabinet weightEmpty cabinet 100 kg Full configuration 300 kg

Power input -48 V DC

Power range -40 V to -57 V

EMC Standards ETSI EN300 386 89/336/EEC

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MPR The Main Processing Rack (MPR) is a mandatory cabinet of the BSC6900.

Only one MPR is configured in the BSC6900. EPR

You can choose not to configure an Extended Processing Rack (EPR) or configure one EPR depending on the traffic to be processed by the BSC6900.

TCR You can choose not to configure an TransCoder Rack (TCR) or configure

one TCR depending on the traffic and the subrack combination mode of the BSC6900.

Component Configuration

Power distribution box

Only one power distribution box is required by a BSC6900.

Subrack A main processing rack (MPR) is configured with a main processing subrack (MPS) and 0 to 2 extended processing subracks (EPSs). An extended processing rack (EPR) is configured with one to three extended processing surbacks (EPSs). A transcoder rack (TCR) is configured with one to three transcoder surbacks (TCSs).

Air defense frame Two air defense frame are required by a BSC6900.

Rear cable trough Three rear cable troughs are required by a BSC6900.

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The MPR consists of main processing subracks (MPS) and extended processing subracks (EPS).

MPS

The MPS is located in the MPR. The BSC6900 is configured with an MPS, which performs service processing and OM functions, and provides system clock signals.

EPS

EPS is optional for a BSC. Whether to configure an EPS depends on the network dimensioning. It can be configured in an MPR or EPR to perform main service processing.

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The EPR and EPS are optional. An EPR is configured with a maximum of three EPSs.

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The TCR and TCS are optional. A TCR is configured with a maximum of three TCSs.

A TCS processes voice data. In BM/TC separated mode, a TCS is configured in the MPR, EPR, or TCR to perform transcoding, rate adaptation, and sub-multiplexing.

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Item Sub-item Specification

Input Rated input voltage -48 V DC/-60 V DC

Input voltage scope -40 V DC to -72 V DC

Input mode Two groups of power inputs: A and B. Group A consists of the power inputs A1+A2 and A3. Group B consists of the power inputs B1+B2 and B3. Each group has one or two -48 V DC or -60 V DC power inputs.

Maximum power input The maximum rated input current of each route is 100 A.

Output Rated output voltage -48 V DC/-60 V DC

Output voltage scope -40 V DC to -72 V DC

Output mode and current

Two groups of power outputs: A and B. Each group has one to four -48 V DC or -60 V DC power outputs. The maximum rated output current of each output is 50 A and that of each group is 100 A.Each output is controlled by air circuit breakers: A7-A10 and B7-B10. These MCBs provide the overcurrent protection function.

Output protection specifications

The overcurrent protection point is 70 A. You need to manually switch on the corresponding air circuit breaker after the overcurrent protection.

Rated output power 9,600 W (Two groups of power outputs: A and B. Each group has two -48 V DC power outputs.)

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Both the RSS and RBS subracks are 12 U shielded subracks of Huawei. The main components of the subrack are the fan box, boards, and front cable trough.

1 U = 44.45 mm = 1.75 inch

Weight of an empty cabinet: 25 kg;

Weight of a fully configured cabinet: 57 kg

Each subrack is configured with a fan box to dissipate heat from the subrack.

Each RNC subrack has a 8-bit DIP switch, which is used to set the subrack number.

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As the DIP switch uses odd parity check, the number of 1s in the eight bits must be an odd number. The method for setting the bits is as follows:

Set bits 1 through 5 and bit 8.

Set bit 7 to ON.

Check the number of 1s in the bits of the DIP switch.

If the number of 1s is even, set bit 6 to OFF.

If the number of 1s is odd, set bit 6 to ON.

Bit Description

1-5Used for setting the subrack number. Bit 1 is the least significant bit. If the bit is set to ON, it indicates 0. If the bit is set to OFF, it indicates 1.

6 Odd parity check bit

7 Reserved, undefined, generally set to ON

8 Reserved, undefined

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Each subrack provides a total of 28 slots. The 14 slots on the front side of the backplane are numbered from 00 to 13, and those on the rear side from 14 to 27.

Two neighboring slots, such as slot 00 and slot 01 or slot 02 and slot 03, can be configured as a pair of active/standby slots. A pair of active and standby boards must be installed in a pair of active and standby slots.

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Each MPS provides 28 slots, with 14 slots on the front side and 14 slots on the rear side.

Each board in the MPS occupies only one slot, except that an OMU occupies two slots.

Slots 0 to 5 house SPU boards only. Slots 6 and 7 house SCU boards only. Slots 12 and 13 house GCU or GCG boards only. Slots 20 to 23 house OMU boards only. Slots 24 to 27 house interface boards only.

Slots 8 to 11 can house SPU or DPU boards exclusively or both SPU and DPU boards. The slot numbers of all DPU boards must be larger than the largest slot number of all SPU boards and smaller than the smallest slot number of all RINT boards.

The MPS can be configured with the following types of board: OMUa, SCUa, SPUa/SPUb, GCUa, GCGa, DPUb/DPUe, AEUa, AOUa/AOUc, UOIa/UOIc, PEUa, POUa/POUc, FG2a/FG2c, and GOUa/GOUc.

The INT boards (interface boards) consist of the following types of boards: AEUa, AOUa/AOUc, UOIa/UOIc, PEUa, POUa/POUc, FG2a/FG2c, and GOUa/GOUc.

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Each EPS has 14 slots in the front and 14 slots in the rear.

The differences between MPS and EPS are as follows:

The EPS should not configured with any GCU, GCG, or OMU board.

Each board in the EPS occupies only one slot.

Slots 0 to 5 house SPU boards only. Slots 6 and 7 house SCU boards only. Slots 12 and 13 house GCU or GCG boards only. Slots 20 to 23 house OMU boards only. Slots 24 to 27 house interface boards only.

Slots 8 to 11 can house SPU or DPU boards exclusively or both SPU and DPU boards. The slot numbers of all DPU boards must be larger than the largest slot number of all SPU boards and smaller than the smallest slot number of all RINT boards.

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The MPS in a BSC6900 performs service processing and OM functions, and provides system clock signals.

Only one MPS is located in the MPR of the BSC6900.

Each MPS provides 28 slots, with 14 slots on the front side and 14 slots on the rear side.


The board configuration of the MPS is determined by the subrack combination mode of the BSC6900.

The MPS can be configured with the following types of board: OMUa/OMUb, SCUa/SCUb, GCUa, GCGa, TNUa, XPUa/XPUb, DPUc, DPUd, DPUf, EIUa, FG2a/FG2c, GOUa/GOUc, POUc, OIUa, and PEUa.

The INT boards (interface boards) consist of the following types of boards: PEUa, EIUa, OIUa, FG2a/FG2c, POUc, and GOUa/GOUc.

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In BM/TC separated mode, an EPS must be configured with the TNUa, SCUa, DPUd, DPUc, GOUa, and EIUa/OIUa boards, and it can be configured with the PEUa/FG2a boards optionally.


Each EPS provides 28 slots, with 14 slots on the front side and 14 slots on the rear side.

The differences between MPS and EPS are as follows:

The EPS should not configured with any GCUa or OMU board.

Slots 0 to 5 house SPU boards only. Slots 6 and 7 house SCU boards only. Slots 12 and 13 house DPU boards only. Slots 20 to 23 house OMU boards only. Slots 20 to 27 house interface boards only.

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In BM/TC combined mode, the MPS can be configured with the following types of board: OMUa/OMUb, SCUa/SCUb, GCUa, GCGa, TNUa, XPUa/XPUb, DPUc, DPUd, DPUf, EIUa, FG2a/FG2c, GOUa/GOUc, POUc, OIUa, and PEUa.


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In BM/TC combined mode, an EPS must be configured with the TNUa, SCUa, XPUa, DPUc, and DPUd boards. In addition, it can be configured with the EIUa, OIUa, and FG2a/PEUa boards optionally.

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In BM/TC separated mode, a transcoder subrack (TCS) is configured in the MPR, EPR, or TCR

It performs transcoding, rate adaptation, and sub-multiplexing.

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Besides, the BSC6900 has the power subsystem and environment monitoring subsystem.

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The switching subsystem consists of the SCUa boards, TNUa boards, high-speed backplane channels in each subrack, crossover cables between SCUa boards, and inter-TNUa cables.

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In the switching subsystem of the BSC6900, the star topology is established among the MAC switching logical modules, and the mesh topology is established among the TDM switching logical modules.

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The Gigabit Ethernet (GE) switching subsystem performs GE switching of signaling and OM information. The SCU performs OM of the subrack where it is located and performs GE switching for other boards in the subrack.

The MAC switching logical modules switch the IP traffic data, OM signals, and signaling. The switching is performed by the SCUa boards and the Ethernet cables between the SCUa boards. The inter-subrack connections related to MAC switching can be classified into the following types:

Interconnections between the MPS and the EPSs

The MPS functions as the main subrack, and a maximum of three EPSs function as extension subracks. The star interconnections between the MPS and the EPSs are established through the Ethernet cables between the SCUa boards.

Interconnections between the TCSs

One TCS functions as the main subrack, and a maximum of three TCSs function as extension subracks. The star interconnections between the TCSs are established through the Ethernet cables between the SCUa boards.

Notes:

In BM/TC combined mode, the SCU boards in the MPS are connected to the main TCS through crossover cables, which are used to establish OM channels for the TCS.

In BM/TC separated mode, the MPS and the main TCS communicate with each other through the Ater interface, without inter-subrack GE interconnection.

EPSEPS

EPSEPS MPSMPS

EPSEPS

TCSTCS

TCSTCS

TCSTCS

TCSTCS

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Each BSC6900 subrack must be configured with the SCUa boards. The dual-plane mesh topology is used for connections between SCUa boards in different subracks.

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The SCUa board provides maintenance management and GE switching for the subrack where it is located. It is used to implement MAC switching and provide interconnections between all modules in a BSC6900.

Port trunking enables multiple physical ports to be grouped into one logical port. This technology helps enhance reliability of data transmission.

Port trunking works in trunk groups. Multiple physical links form a trunk group. If a physical link in the trunk group becomes unavailable, the data carried on the faulty link is transmitted on other links in the trunk group. Therefore, the link failure does not disrupt proper communication between both ends of the trunk group.

The traffic on the trunk group can reach a maximum of the total traffic on all the physical links in the trunk group. Port trunking helps enhance transmission reliability and increase transmission bandwidth.

Port trunking is supported by the GE port on the SCUa board.

Port trunking is supported by the switching subsystem of an RNC.

The bandwidth of a trunk group is allocated to each GE port so that load is balanced among GE ports.

If a GE port in a trunk group is faulty, the links on the GE port are switched over automatically.

If the SCU board or a service processing board is faulty, the links cannot be switched over.

Port Identification Function Port Type

10/100/1000BASE-T0 to 11 10M/100M/1000M Ethernet ports used for inter-subrack connection

RJ45

COM Serial port for commissioning RJ45

CLKIN Receiving the 8 kHz and the 1PPS timing signals from the GCUa/GCGa

RJ45

TESTOUT Output port for clock signals. The clock signals are used for testing.

SMB male

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Remarks:

Panel: Four 10G Ethernet cables and six GE cables are used for inter-subrack connections, and two GE cables are used for connection with the an external BAM.

Inter-subrack connection: 10M/100M/1000M self-adaptation is used for GE ports.

Supporting a short period when the SCUa and SCUb boards are configured in the same subrack: Switchover of the SCUb boards does not affect services.

Inter-subrack connections

Ports 0 to 7 are GE ports, among which two neighboring ports form a trunk group, same as the SCUa board. Ports 6 and 7 form a trunk group used for interconnection of BAMs.

Ports 8 to 11 are 10G Ethernet ports. Ports 8 and 9 form a trunk group. Ports 10 and 11 are two independent trunk groups.

Port IdentificationPort IdentificationPort IdentificationPort Identification FunctionFunctionFunctionFunction Port Port Port Port TypeTypeTypeType

10/100/1000BASE-T0 to 11 10M/100M/1000M Ethernet ports used for inter-subrack connection

RJ45

COM Serial port for commissioning RJ45CLKIN Receiving the 8 kHz and the 1PPS timing

signals from the GCUa/GCGa RJ45

TESTOUT Output port for clock signals. The clock signals are used for testing.

SMB male

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Straight-through cables are used to connect the SCUa boards in different subracks.

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BM Subrack Connection (BM & TC Separated Mode)

Subrack 0

Subrack 1 Subrack 3

Subrack 2

Subrack 5

Subrack 4

Subracks of MPR

Subracks of EPR

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BM Subrack Connection (BM & TC Combined Mode)

Subrack 0

Subrack 1

Subrack 2

Subracks of MPR

Subracks of EPR

Subrack 3

Subrack 4

Subrack 5

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Interconnections between the MPS and the EPSs

The TDM mesh interconnections between the MPS and the EPSs are established through the inter-TNUa crossover cables.

Interconnections between the TCSs

The TDM mesh interconnections between the TCSs are established through the inter-TNUa crossover cables.

Subrack 1Subrack 1

Subrack 2Subrack 2

Subrack 4Subrack 4

Subrack 3Subrack 3

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The TNUa board provides the TDM switching and serves as the switching center for the CS services of the entire system.

Port Port Port Port IdentificatIdentificatIdentificatIdentificat

ionionionion

FunctionFunctionFunctionFunction Port TypePort TypePort TypePort Type

TDM0 to TDM5

TDM high-speed serial ports, used to connect the TNUa boards in different subracks

DB14

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EPS 1#

MPS 0#

TNUa TNUa

TNUa TNUa

EPS 2#

TNUa TNUa

EPS 3#

TNUa TNUa

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Service processing subsystems can be increased as required, according to the linear superposition principle. Thus, the service processing capability of the BSC6900 is improved.

Service processing subsystems communicate with each other through the switching subsystem to form a resource pool and perform tasks cooperatively.

The service processing subsystem mainly consists of four logical modules: RNC control plane (CP), RNC user plane (UP), BSC CP, and BSC UP.

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The service processing subsystem consists of the SPU and DPU boards. The SPU boards perform signaling processing. The DPU boards perform service processing.

The SPU subsystem, which serves as a control plane (CP) processor, forms the CP resource pool. The DSP, which serves as a user plane (UP) processor, forms the UP resource pool. The CP and UP resource pools work cooperatively through the switching subsystem.

The SPU boards are classified into SPUa and SPUb.

The SPUa and SPUb boards are used to process GSM and UMTS signaling messages.

The preceding figure is based on the SPUb.

The DPU boards are classified into the following types:

DPUa used for voice and data services processing of GSM CS domain

DPUc used for voice and data services processing of GSM CS domain

DPUf used for voice and data services processing of GSM CS domain

DPUd used for data service processing of GSM PS domain

DPUb and DPUe used for voice service processing of UMTS CS domain and data service processing of UMTS PS domain (DPUb can also be used for data service processing of GSM PS domain)

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Processing capability of the main control XPUa board

Supporting 270 TRXs, 270 cells, 270 BTSs, and 492,000 Max equivalent BHCAs (Busy Hour Call Attempts)

Processing capability of the non-main control XPUa board

Supporting 360 TRXs, 360 cells, 360 BTSs, and 656,000 Max equivalent BHCAs



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Processing capability of the main control XPUb board

Supporting 640 TRXs, 640 cells, 640 BTSs, and 1,050,000 Max equivalent BHCAs (Busy Hour Call Attempts)

Processing capability of the non-main control XPUb board

Supporting 640 TRXs, 640 cells, 640 BTSs, and 1,050,000 Max equivalent BHCAs



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The SPUa board has the same functions as the SPUb board.

The processing capabilities of the main control SPUa board are as follows:

The SPUa board supports 100 NodeBs, 300 cells, and 80,000 BHCAs when serving as the UMTS signaling processing board. The SPUa board supports 270 TRXs, 384 cells, 384 BTSs, and 492,000 BHCAs when serving as the GSM signaling processing board.

The processing capabilities of the non-main control SPUa board are as follows:

The SPUa board supports 100 NodeBs, 300 cells, and 80,000 BHCAs when serving as the UMTS signaling processing board. The SPUa board supports 360 TRXs, 384 cells, 384 BTSs, and 656,000 BHCAs when serving as the GSM signaling processing board.

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Processing capability of the main control SPUb board

The SPUb board supports 180 NodeBs, 600 cells, and 114,000 BHCAs when serving as the UMTS signaling processing board. The SPUb board supports 640 TRXs, 768 cells, 768 BTSs, and 1,148,000 BHCAs when serving as the GSM signaling processing board.

Processing capability of the non-main control SPUb board

The SPUb board supports 180 NodeBs, 600 cells, and 130,000 BHCAs when serving as the UMTS signaling processing board. The SPUb board supports 640 TRXs, 768 cells, 768 BTSs, and 1,312,000 BHCAs when serving as the GSM signaling processing board.

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The processing capabilities of the board are as follows:

Supporting the UL+DL data stream at 115 Mbit/s

Supporting 1,800 Erlang for CS speech service

Supporting 900 Erlang for CS data service

Supporting 150 cells

The DPUb board performs the following functions:

Multiplexes and demultiplexes

Processes frame protocols

Selects and distributes data

Performs the functions of the GTP-U, IUUP, PDCP, RLC, MAC, and FP protocols

Performs encryption, decryption, and paging

Processes internal communication protocols between the SPUa board and the DPUb board

Processes the Multimedia Broadcast and Multicast Service (MBMS) at the RLC layer and the MAC layer


In the uplink, the DPUb board receives data from the NodeBs, demultiplexes the data, and sends it to the corresponding processing units. In the downlink, the DPUb board receives signaling, CS data, and PS data, multiplexes it, and then sends it to the NodeBs.

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The processing capabilities of the DPUe board are as follows:

Supporting the UL+DL data stream at 335 Mbit/s; or supporting the UL+DL data stream at 500 Mbit/s if the capacity license is configured

Supporting 3,350 Erlang for CS speech service Supporting 1,675 Erlang for CS data service Supporting 300 cells

The DPUe board performs the following functions:

Selects and distributes data


Processes frame protocols

Performs the functions of the GTP-U, IUUP, PDCP, RLC, MAC, and FP protocols

Performs encryption, decryption, and paging

Processes the Multimedia Broadcast and Multicast Service (MBMS) at the RLC layer and the MAC layer

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The DPUc board processes GSM voice services and data services.

The recommended slots for the Data Processing Unit REV: c (DPUc) board are: slots 0 to 3, slots 8 to 11, and slots 14 to 23 in the MPS; slots 0 to 3 and slots 8 to 27 in the EPS; slots 0 to 3 and slots 8 to 27 in the TCS.

The DPUc board performs the following functions:

Converts the speech format and forwards data

The DPUc board in the MPS/EPS performs the preceding functions in any of the following configuration modes: BM/TC combined, A over IP and Abis over IP, or A over IP and Abis over HDLC.

Encodes and decodes voice services

The DPUc board in the MPS/EPS performs the preceding function in either of the following configuration modes: BM/TC combined or A over IP and Abis over TDM. The DPUc board in the TCS performs the preceding function in BM/TC separated mode.

Provides the Tandem Free Operation (TFO) function

When the calling MS and the called MS use the same voice coding scheme, the voice signals are encoded only once at the calling MS side and decoded only once at the called MS side. This avoids repeated encoding and decoding and improves the quality of speech services.

Provides the voice enhancement function

Detects voice faults automatically

Work mode: resource pool

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The recommended slots for the Data Processing Unit REV: d (DPUd) board are: slots 0 to 3, slots 8 to 11, and slots 14 to 23 in the MPS; slots 0 to 3 and slots 8 to 27 in the EPS.

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The DPUf board performs the following functions:


The DPUf board in the MPS/EPS performs the preceding functions in any of the following configuration modes: BM/TC combined, A over IP and Abis over IP, or A over IP and Abis over HDLC.


The DPUf board in the MPS/EPS performs the preceding functions in any of the following configuration modes: BM/TC combined, or A over IP and Abis over TDM. The DPUf board in the TCS performs the preceding function in BM/TC separated mode.


When the calling MS and the called MS use the same voice coding scheme, the voice signals are encoded only once at the calling MS side and decoded only once at the called MS side. This avoids repeated encoding and decoding and improves the quality of voice services.

Provides the voice enhancement function

Detects voice faults automatically

Note

Interworking Function (IWF)

The interworking function is used to provide circuit switched data services when connecting a cellular network to a PSTN.

Advantage of IWF: providing the CS service

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The DPUf board processes GSM voice services and data services.

Supporting 1920 TCH/Fs; supporting 7680 IWF flow numbers in the case of all-IP networking; supporting 3840 IWF flow numbers in the case of Abis over TDM or Ater over TDM

The recommended slots for the Data Processing Unit REV: f (DPUf) board are: slots 0 to 3, slots 8 to 11, and slots 14 to 23 in the MPS; slots 0 to 3 and slots 8 to 27 in the EPS; slots 0 to 3 and slots 8 to 27 in the TCS.


The DPUf board in the MPS/EPS performs the preceding function in either BM/TC combined mode or the mode of A over IP and Abis over IP or HDLC.


The DPUf board in the MPS/EPS performs the preceding function in either of the following configuration modes: BM/TC combined or A over IP and Abis over TDM. The DPUf board in the TCS performs the preceding function in BM/TC separated mode.


When the calling MS and the called MS use the same voice coding scheme, the voice signals are encoded only once at the calling MS side and decoded only once at the called MS side. This avoids repeated encoding and decoding and improves the quality of speech services.

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The BSC6900 can use the Building Integrated Timing Supply System (BITS), Global Positioning System (GPS), LINE, and 8 kHz clocks.

The internal clock processing process of an RNC is as follows:

The clock module in the GCUa/GCGa board receives clock signals.

Through the clock output port on the GCUa/GCGa board, the clock module sends the 8 kHz clock signals to the SCUa boards in the MPS and each EPS.

System clock signals of 19.44 MHz, 32.768 MHz, and 8 kHz are generated in the MPS and each EPS and sent to other boards in each subrack.

The AEUa and PEUa boards obtain the 32.768 MHz clock signals.

The AOUa and POUc boards obtain the 19.44 MHz clock signals.

The UOIc board obtains the 8 kHz clock signals.

The FG2c and GOUc boards do not use the clock signals from the clock module in the GCUa/GCGa board.

The Iub/Abis-interface board forwards clock signals to BTSs or NodeBs.

If the line clock is obtained from the CN through an interface board in an EPS, the clock signals can be sent out through the 2 MHz clock output port on the interface board to the GCUa/GCGa board by using a clock signal cable.

If the BSC6900 is configured with a Gb interface board, the Gb interface board can obtain clock signals either through the backplane in the subrack where the Gb interface board is located or from the CN. When the CS and PS data use different clock sources and clock signals are obtained from the CN, the Gb interface cannot share a board with other interfaces.

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Supports active/standby switchover. The standby GCUa/GCGa board traces the clock phase of the active GCUa/GCGa board. This ensures the smooth output of the clock phase in the case of active/standby switchover.

Receives and processes the clock signals and the positioning information from the GPS card

Port IdentifierPort IdentifierPort IdentifierPort Identifier FunctionFunctionFunctionFunction Connector TypeConnector TypeConnector TypeConnector Type

ANT Reserved SMA male

CLKOUT0 to CLKOUT9

Ports for providing synchronization clock signals. The ten ports are used to provide 8 kHz clock signals and 1PPS clock signals for the CLKIN port on the SCUa board.

RJ45

COM0 and COM1 Reserved RJ45

TESTOUT Reserved SMB male

TESTIN Output port for clock signals. The clock signals are used for testing. SMB male

CLKIN0 and CLKIN1

Input ports for 2.048 MHz synchronization clock signals and 2.048 Mbit/s flow signals SMB male

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The active/standby GCUa/GCGa board and the active/standby SCUa board are connected through a Y-shaped clock cable.

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The interface processing subsystem processes transport network messages. It also hides the differences between transport network messages within the BSC6900.

On the uplink, the interface processing subsystem terminates transport network messages at the interface boards. It also transmits the user plane, control plane, and management plane datagrams to the corresponding service processing boards. The processing of the signal flow on the downlink is the reverse of the processing of the signal flow on the uplink.

Interface board Iub Iu_CS Iu_PS Iur Iu_BC

AEUa Y

AOUa Y

AOUc Y Y Y Y

UOIa_ATM/IP Y Y Y Y Y

UOIc_ATM Y Y Y Y

PEUa Y

FG2a Y Y Y Y Y

FG2c Y Y Y Y

POUa Y

POUc Y Y

GOUa Y Y Y Y Y

GOUc Y Y Y Y

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Item Specification

Abis TRX 384

A CIC(64K) 960

Ater CIC(16K) 3,840

Pb CIC(16K) 3,840

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Item Specification

Abis TRX 384

A CIC(64K) 1920

Ater CIC(16K) 7168

Pb CIC(16K) 7168

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Supports Multi-Link PPP. In E1 transmission mode, the POUc provides 42 MLPPP groups; in T1 transmission mode, the POUc provides 64 MLPPP groups.

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The POUc board has two CPUs: CPU0 and CPU1. These two CPUs perform different functions when the ports on the POUc board use different transmission modes.

When the ports on the POUc board use IP transmission, CPU0 mainly performs the

management plane functions, such as board management, alarm reporting, traffic statistics reporting, as well as transmission port management and maintenance, and

CPU1 mainly performs the control plane functions, such as establishment and clearing of channels for data flows.

When the ports on the POUc board use TDM transmission, CPU0 mainly performs the

management plane and control plane functions, such as board management, alarm reporting, traffic statistics reporting, transmission port management and maintenance, as

well as establishment and clearing of channels for data flows, and CPU1 mainly processes

the signaling according to the MTP2 and Ater SL protocols.

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the specifications of the processing capability of the POUc board in TDM transmission mode.

the specifications of the processing capability of the POUc board in IP transmission mode.

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OC-3--channelized port supporting the SONET

OC-3c--unchannelized port supporting the SONET

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BSC6900V900R011 Hardware System (GSM&UMTS)


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Ports on the AOUc Board

Port Function Connector Type

RX Optical port, used to transmit and receive optical signals. TX refers to the transmitting optical port, and RX refers to the receiving optical port.

LC/PC

TX

2M0 and 2M1

Output ports for clock signals. These ports are used to transmit the 2 MHz line clock signals to the GCUa/GCGa board. The clock signals are extracted from upper-level devices and serve as the clock sources of the BSC6900 system.

SMB male connector

Processing capabilities of the UOIa board in ATM mode

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Processing capabilities of the UOIa board in IP mode

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BSC6900V900R011 Hardware System (GSM&UMTS)


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Ports on the UOIc Board

Port Function Connector Type

RX Optical port, used to transmit and receive optical signals. TX refers to the transmitting optical port, and RX refers to the receiving optical port.

LC/PC

TX

2M0 and 2M1

Output ports for clock signals. These ports are used to transmit the 2 MHz line clock signals to the GCUa/GCGa board. The clock signals are extracted from upper-level devices and serve as the clock sources of the BSC6900 system.

SMB male connector

OM of the BSC6900 is performed in the following scenarios: routine maintenance, emergency maintenance, troubleshooting, device upgrade, and capacity expansion.

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The dual OM plane design is implemented by the hardware that works in active/standby mode. When an active component is faulty but the standby component works properly, a switchover is automatically performed between the active and standby components, to ensure that the OM channel works properly.

The active/standby OMUa boards use the same external virtual IP address to communicate with the LMT or M2000 and use the same internal virtual IP address to communicate with the SCUa board.

When the active OMUa board is faulty, an active/standby switchover is performed automatically, and the standby OMUa board takes over the OM task. In this case, the internal and external virtual IP addresses remain unchanged. Therefore, proper communication between the internal and external networks of the BSC6900 is ensured.

When a single fault occurs on the switching network, the active/standby SCUa boards in each subrack are switched over automatically to ensure that the OM channel works properly.

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OMUa refers to Operation and Maintenance Unit REV:a. OMUb refers to Operation and Maintenance Unit REV:b.

OMUa/ OMUb ports

(1) Captive screw (2) Ejector lever (3) Self-locking latch (4) RUN indicator

(5) ALM indicator (6) ACT indicator (7) RESET indicator (8) SHUTDOWN indicator(9) USB port (10) ETH0 Ethernet port (11) ETH1 Ethernet port (12) ETH2 Ethernet port

(13) COM serial port

(14) VGA port (15) HD indicator (16) OFFLINE indicator

(17) Hard disk (18) Screws for fixing the hard disk

Port IdentifierPort IdentifierPort IdentifierPort Identifier FunctionFunctionFunctionFunction Connector TypeConnector TypeConnector TypeConnector Type

USB0-1 and USB2-3 USB ports. These ports are used to connect USB devices.

ETH0 to ETH2 GE ports RJ45

COM0-ALM/COM1-BMC Serial port. This port is used for system commissioning or for common serial port usage. DB9

VGA Monitor port

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Board redundancy = active and standby working mode

MSP: Multiplex Section Protection 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 based on the backup design or anti-suspension/breakdown design.

The system uses the redundancy design to support hot swap of boards and backup of important modules. Therefore, the system has a strong error tolerance capability.

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Switching Subsystem

The switching subsystem performs switching of traffic data, signaling, and OM signals of BSC6900.

Service Processing Subsystem

The BSC6900 service processing subsystem performs the control functions defined in the 3GPP protocols and processes services of the BSC6900.

Interface Processing Subsystem

The interface processing subsystem provides transmission ports and resources, processes transport network messages, and enables interaction between the BSC6900 internal data and external data.

Clock Synchronization Subsystem

The clock synchronization subsystem provides clock signals for the BSC6900, generates the RNC Frame Number (RFN), and provides reference clock signals for base stations.

OM Subsystem

The OM subsystem enables the management and maintenance of the BSC6900 in the following scenarios: routine maintenance, emergency maintenance, upgrade, and capacity expansion.

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The 75-ohm coaxial cable is a type of trunk cable. It is optional. The number of 75-ohm coaxial cables to be installed depends on the site requirements. This cable connects the active/standby AEUa/PEUa board to the Digital Distribution Frame (DDF) or other NEs and transmits E1 trunk signals.

The 75-ohm coaxial cable used in the BSC6900 has 2 x 8 cores. That is, the 75-ohm coaxial cable is composed of two cables, each of which contains eight micro coaxial cables. All of the 16 micro coaxial cables form eight E1 RX/TX links.

The 75-ohm coaxial cable has DB44 connectors only at one end. You need to add a connector to the other end according to the actual requirements.

The 120-ohm twisted pair cable is a type of E1/T1 cable. It is optional. The number of 120-ohm twisted pair cables to be installed depends on the site requirements. This cable connects the active/standby AEUa/PEUa board to the DDF or other NEs and transmits E1/T1 signals.

The 120-ohm twisted pair cable has two DB44 connectors only at one end. You need to add a connector to the other end according to the actual requirements.

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The 75-ohm coaxial cable has two DB44 connectors only at one end. You need to add a connector to the other end according to the actual requirements.

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The 120-ohm twisted pair cable has two DB44 connectors only at one end. You need to add a connector to the other end according to the actual requirements.

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The straight-through cable is of two types: the shielded straight-through cable and the unshielded straight-through cable.

The unshielded straight-through cable is used to connect SCUa boards in different subracks.

The shielded straight-through cable is used to connect the FG2a/OMUa/FG2c board to other devices. The number of straight-through cables to be installed depends on the site requirements.

When a straight-through cable is used to connect SCUa boards in different subracks, the RJ45 connectors at the two ends of the cable are connected to the SCUa boards that are located in different subracks.

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The straight-through cable is of two types: the shielded straight-through cable and the unshielded straight-through cable.

The unshielded straight-through cable is used to connect SCUa boards in different subracks.

The shielded straight-through cable is used to connect the FG2a/OMUa/FG2c board to other devices. The number of straight-through cables to be installed depends on the site requirements.

When a straight-through cable is used to connect SCUa boards in different subracks, the RJ45 connectors at the two ends of the cable are connected to the SCUa boards that are located in different subracks.

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When the straight-through cable is used to connect the OMUa board to other equipment, the RJ45 connector at one end of the cable is connected to the ETH0 or the ETH1 port on the OMUa board, and the RJ45 connector at the other end of the cable is connected to the Ethernet port of other equipment.

When the straight-through cable is used to connect the FG2a/FG2c board to other equipment, the RJ45 connector at one end of the cable is connected to the Ethernet port on the FG2a/FG2c board, and the RJ45 connector at the other end of the cable is connected to the Ethernet port of other equipment.

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The optical cable has an LC/PC connector at one end connected to the optical interface board in the BSC6900. The other end of the optical cable can use an LC/PC connector, SC/PC connector, or FC/PC connector as required.

LC/PC-LC/PC single-mode/multi-mode optical fibers can be used to connect an optical interface board to another optical interface board as well as to the ODF or other NEs.

In practice, two optical cables form a pair. Temporary labels are attached to both ends of each cable in the pair. If one end of the cable is connected to the TX port, the other end should be connected to the RX port.

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The Y-shaped clock cable is a type of clock signal cables. It is optional. The number of Y-shaped clock cables to be installed depends on the site requirements. The Y-shaped clock cable transmits 8 kHz clock signals from the GCUa/GCGa board in the MPS to the SCUa boards in the EPSs.

The RJ45 connector at one end of the Y-shaped clock cable is connected to the SCUa boards in the EPSs. The two RJ45 connectors at the other end of the cable are connected to the active and standby GCUa/GCGa boards in the MPS.

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The monitoring signal cable for the power distribution box transmits monitoring signals from the power distribution box to each service processing subrack through the independent fan subrack. The DB15 connector at one end of the monitoring signal cable for the power distribution box is connected to the corresponding port on the power distribution box. The DB9 connector at the other end of the cable is connected to the MONITOR 1 port on the independent fan subrack.

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The process on the uplink is as follows:

The RRC messages from the UE are processed at the physical layer of the NodeB and then are sent to the Iub interface board of the BSC6900 over the Iub interface.

The Iub interface board processes the messages and then sends them to the DPUb board. See signal flow 1.

If the SPUa board that processes the RRC messages and the Iub interface board that receives the RRC messages are located in different subracks, the messages travel to the MPS for switching. The MPS then sends the messages to the appropriate DPUb board. See signal flow 2.

The DPU board performs FP, MDC, MAC, and RLC processing on the messages and then sends the messages to an appropriate SPUa board where the messages are terminated.

The downlink flow is the reverse of the uplink flow.

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The RRC messages from the UE are processed at the physical layer of the NodeB and then are sent to the Iub interface board of the BSC6900-1 over the Iub interface.

The Iub interface board and the DPUb board of BSC6900-1 process the messages and then send them to the Iur interface board of BSC6900-1. (Note: The RRC message for an inter-BSC6900 cell update needs to be sent to the SPUa board of BSC6900-1 before it is sent to the Iur interface board of BSC6900-1.)

The Iur interface board of BSC6900-1 processes the RRC messages and then sends them to the Iur interface board of BSC6900-2 over the Iur interface between BSC6900-1 and BSC6900-2.

The Iur interface board of BSC6900-2 processes the messages and then sends them to the DPUb board.

The DPU board performs FP, MDC, MAC, and RLC processing on the messages and then sends the messages to an appropriate SPUa board where the messages are terminated.


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The NodeB transmits the control-plane messages to the Iub interface board of the BSC6900 over the Iub interface.

The Iub interface board processes the messages and then sends them to the SPUa board where the messages are terminated. See signal flow 1.

If the SPUa board that processes the messages and the Iub interface board that receives the messages are located in different subracks, the messages travel to the MPS for switching. The MPS then sends the messages to the appropriate SPUa board. See signal flow 2.


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The process on the downlink is as follows:

The control-plane messages from the MSC, SGSN, or another BSC6900 travel to the Iu/Iur interface board of the BSC6900 over the Iu/Iur interface.

The Iu/Iur interface board processes the messages and then sends them to the SPUa board in the same subrack for processing. signal flow 1.

If the SPUa board in the same subrack as the Iu/Iur interface board cannot process the messages, the Iu/Iur interface board sends the messages to the SPUa board in another subrack for processing after the switching in the MPS. See signal flow 2.

The uplink flow is the reverse of the downlink flow.

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The NodeB processes the data and sends it to the Iub interface board of BSC6900 over the Iub interface.

The Iub interface board processes the data and sends it to an appropriate DPUb board. See data flow 1.

If the DPUb board that processes the messages and the Iub interface board that receives the messages are located in different subracks, the messages travel to the MPS for switching. The MPS then sends the messages to the appropriate DPUb board. See signal flow 2.

The DPUb board performs the FP, MDC, MAC, RLC, and Iu UP or PDCP/GTP-U processing on the data, separates the CS/PS user-plane data from other data, and then sends the data to the Iu-CS/Iu-PS interface board.

The Iu-CS/Iu-PS interface board processes the data and then sends it to the MSC/SGSN.


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The NodeB processes the data and sends it to the Iub interface board of BSC6900-1 over the Iub interface. The Iub interface board and the DPUb board of BSC6900-1 process the data and then send them to the Iur interface board of BSC6900-1.(Note:

The DPUb of BSC6900 only performs FP and MDC processing on the data. The Iur interface board of BSC6900-1 processes the data and then sends them to the

Iur interface board of BSC6900-2 over the Iur interface between BSC6900-1 and BSC6900-2.

The Iur interface board of BSC6900-2 processes the data and then sends the data to the DPUb board.

The DPUb board processes the data, separates the CS/PS user-plane data from other data, and then sends the CS/PS user-plane data to the Iu-CS/Iu-PS interface board.

The Iu-CS/Iu-PS interface board processes the data and then sends it to the MSC/SGSN.


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The CS signal flow in Abis over TDM, Ater over TDM, A over TDM, and BM/TC separated mode.

The uplink CS signals are sent from the BTS to the Abis interface board in the MPS/EPS.

The CS signals are demultiplexed in the Abis interface board. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the Ater interface board through the TNUa board.

The CS signals are multiplexed in the Ater interface board. Each full-rate CS signal uses a 16 kbit/s sub-timeslot, and each half-rate CS signal uses an 8 kbit/s sub-timeslot. The CS signals are then transmitted to the Ater interface board in the TCS over the Ater interface.

The CS signals are demultiplexed in the Ater interface board of the TCS. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the DPUc board through the TNUa board.

The DPUc board performs speech codec and rate adaptation on the CS signals, which are converted into 64 kbit/s PCM signals. The 64 kbit/s PCM signals are transmitted to the A interface board through the TNUa board and then to the MSC over the A interface.

The CS signal flow in Abis over TDM and A over TDM mode.


The CS signals are demultiplexed in the Abis interface board. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the DPUc board through the TNUa board.


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The CS signal flow in Abis over IP, Ater over TDM, A over TDM, and BM/TC separated mode.


The CS signals are transmitted from the Abis interface board to the DPUc board through the SCUa board.

The DPUc board reorders PTRAU frames, eliminates jitter, and converts PTRAU frames into TRAU frames. Then, the TRAU frames are transmitted to the Ater interface board through the TNUa board.

The CS signals are multiplexed in the Ater interface board in the MPS/EPS, and then are transmitted to the Ater interface board in the TCS.

The CS signals are demultiplexed in the Ater interface board of the TCS. Each CS signal uses a 64 kbit/s timeslot and is transmitted to the DPUc board through the TNUa board.


the CS signal flow in Abis over IP and A over TDM mode.


The CS signals are transmitted to the DPUc board through the SCUa board.

The DPUc board reorders PTRAU frames, eliminates jitter, and performs speech codec and rate adaptation on the PTRAU frames, which are converted into 64 kbit/s PCM frames.

The PCM frames are transmitted to the A interface board through the TNUa board, and then are transmitted to the MSC over the A interface.

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The PS signal flow in Abis over TDM transmission mode.

The packet data is sent from the BTS to the Abis interface board in the MPS/EPS. The data uses one to four 16 kbit/s sub-timeslots on the Abis interface, depending on the modulation and coding scheme, for example, CS1-CS4 or MCS1-MCS9.

The Abis interface board transmits the packet data to the TNUa board, which then transmits the data to the DPUd board.

The DPUd board converts the frame format and then transmits the data to the Gbinterface board through the SCUa board.

The Gb interface board processes the packet data according to the IP or FR protocol and then transmits it to the SGSN over the Gb interface.

The PS signal flow in Abis over IP transmission mode.

The packet data is sent from the BTS to the Abis interface board in the MPS/EPS.

The SCUa board transmits the packet data to the DPUd board.

The DPUd board converts the frame format and then transmits the data to the Gbinterface board through the SCUa board.

The Gb interface board processes the packet data according to the IP or FR protocol and then transmits it to the SGSN over the Gb interface.

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Signaling flow on the A interface in A over TDM mode (BM/TC separated)

In the MPS/EPS, the XPUa board processes the signaling according to the MTP3, SCCP, and BSSAP protocols. Then, the signaling is transmitted to the Ater interface board through the SCUa board.

The Ater interface board processes the signaling according to the MTP2 protocol. Then, the signaling is transmitted to the Ater interface board in the TCS.

In the TCS, the Ater interface board transparently transmits the signaling to the TNUa board and then to the A interface board. Then, the signaling is transmitted to the MSC over the A interface.

Signaling flow on the A interface in A over TDM mode (BM/TC combined)

In the MPS/EPS, the XPUa board processes the signaling according to the MTP3, SCCP, and BSSAP protocols. Then, the signaling is transmitted to the A interface board through the SCUa board.

The A interface board processes the signaling according to the MTP2 protocol. Then, the signaling is transmitted to the MSC over the A interface.

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Signaling flow on the A interface in A over IP mode

In the MPS/EPS, the XPUa board processes the signaling according to the BSSAP, SCCP, SCTP, and M3UA protocols. Then, the signaling is transmitted to the A interface board through the SCUa board.

The A interface board processes the signaling according to the IP protocol. Then, the signaling is transmitted to the MSC server through the MGW.

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The signaling flow on the Abis interface in Abis over TDM mode.

The signaling from the BTS is transmitted to the Abis interface board in the MPS/EPS over the Abis interface and is then transmitted to the SCUa board.

The SCUa board transmits the signaling to the signaling processing board.

The signaling flow on the Abis interface in Abis over IP mode.

The signaling from the BTS is transmitted to the Abis interface board in the MPS/EPS over the Abis interface.

The Abis interface board processes the signaling according to the MAC, IP, and UDP protocols. Then, the signaling is transmitted to the signaling processing board through the SCUa board.

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The signaling flow on the Gb interface.

In the MPS/EPS, the signaling processing board processes the signaling according to the NS and BSSGP protocols. Then, the signaling is transmitted to the Gb interface board through the SCUa board.

The Gb interface board processes the signaling according to the IP or FR protocol. Then, the signaling is transmitted to the SGSN over the Gb interface.

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The traffic is calculated on the basis of Huawei traffic model. The N/A in the table indicates that the data is not available at present.

You can calculate the capacity specifications in any typical subrack combination mode by using the preceding data.

MPR

MPS

EPS

EPS

EPR

EPS

EPS

EPS

MPS

MPR

BSC6900 Maximum

Configuration

BSC6900 Minimum Configuration

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In BM/TC combined and non- A over IP mode (without DPUf board), three subrack cannot reach the full configuration of 4096 TRXs.

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This configuration is only an example.

When the AOUc and UOIc boards are used, the specifications that are expected by R13 cannot be reached. In the typical configuration, each subrack is configured with four DPUe boards (total throughput: 3.2 Gbit/s), four UOIc boards as Iu interface boards (with 32 STM-1 ports in all and supporting total throughput of 3.6 Gbit/s), and eight AOUc boards as Iub interface boards (with 32 STM-1 ports and supporting total throughput of 4.8 Gbit/s). The preceding configurations of DPUe, UOIc, and AOUc boards match each other, and the remaining slots are occupied by SPUb boards, which process control-plane signaling.

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When UOIc boards are used, the specifications that are expected by R13 cannot be reached. In this typical configuration, each subrack is fully configured with five pairs of SPUb boards. Each subrack is configured with four DPUe boards and eight UOIc boards, four UOIc boards serving as the Iu interface boards and four UOIc boards serving as the Iub interface boards. The preceding configurations of SPUb, DPUe, and UOIc boards match each other. If more DPUe boards are configured, the control-plane signaling capability of the SPUb boards becomes insufficient. The number of SPUb boards, however, cannot be increased.

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When the GOUc boards are used, a small number of interface boards are required. Therefore, each subrack can be fully configured with a maximum of five DPUe boards and five pairs of SPUb boards.

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Descripcion Del Producto BSC6900 V900R013_en

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