rnc architecture and hw

1 Nokia Siemens Networks Presentation / Author / Date / Document Number

For public use IPR applies

RNC Architecture Overview



UTRAN

Iu-CS

Uu

User Equipment(UE)

IurIub

DRNC

WBTS

WBTS

WBTS

WBTS

SRNC

Core Network(CN)

3G-SGSN

3G-MSC

Iu-PS

UTRAN Interfaces

CBCIu-BC

SASor

A-GPS Server

Iu-pc orADIF

Abbreviations

SAS Standalone SMLC (Serving Mobile Location Centre)

CBC Cell Broadcast Centre



NSN Radio Network Controller

Based on IPA2800 platform

RNC functionality: Radio Resource Management

Telecom

Transmission and transport

O&M

Interface to NetAct

User interface

Measurements and statistics

WCDMA Radio Resource Management:

Management of traffic channels and control channels can be divided into:

Resource manager

Admission control

Load control

Power control

Handover control

Packet scheduler

Telecom functions:

Security functions: integrity checking, ciphering

User plane processing towards CS and PS core network (for example management of radio access

bearers (RAB))

Radio network layer control plane processing

Service area broadcast

Location services:

LCS Cell Coverage Based (RTT) with Geographical Coordinates

In the Cell Coverage Based positioning method, the location of the UE is estimated on the basis

of its serving cell. Information about the serving cell is obtained, for example, by paging,

location area update, cell update, URA update or routing area update.

Assisted GPS

In RAS05.1 / RAS05.1 ED, in addition to Cell Coverage Based positioning, A-GPS (Assisted GPS) is

supported. The objective of this method is to forward to the UE the GPS Navigation Message in a

specified Assistance Measurement Control message. Hence, the satellite acquisition time can be

significantly reduced and the availability of the positioning service can be enhanced to urban

canyons and light indoor environments. Moreover, the A-GPS positioning accuracy can be

improved if rough location of the UE can be included in the Assistance Measurement Control

message. Rough position of the UE can be estimated based on, e.g., introduced Cell Coverage

Based location technique.



Mechanics (M2000)

Cabinet mechanics for indoor use

Cabinet contains 4 subracks, 4 fan trays, and power distribution equipment

EMC shielding at subrack level rather than at cabinet level

Front and back cabling

A5 hardware mechanics(RNC450): EC216 Equipment Cabinet,

2100*600*600 mm

SRA3 Subrack, ATM, type 3

FTRA-B Fan Tray 1200W

RNC450

The IPA2800 platform introduces a new mechanics concept, with new cabinet, new subrack (EMC

shielded), and new plug-in unit dimensions. Fan units are needed inside the cabinet for forced

cooling.

The M2000 mechanics comprises the basic mechanics concept based on ETSI 300 119-4 standard

and IEC 917 series standards for metric dimensioning of electronic equipment.

The concept supports the platform architecture which allows modular scalability of configurations

varying from modest to very large capacity. It also allows the performance to be configured using

only few hardware component types.

The mechanics consists of following equipment:

cabinet mechanics

19-slot subrack, it's backplane and front plate mechanics

connector and cabling system

cooling equipment.

Dimensions of the cabinet are: width 600 mm, depth 600 mm, and height 1800/2100 mm (based

on standard ETS 300 119-2 and IEC 917-2).

Subrack has a height of 300 mm, a depth of 300 mm, and a width of 500 mm. The nominal plug-in

unit slot in the subrack is 25 mm which results in 19 slots per one subrack. The basic construction

allows dividing a part of a subrack vertically into two slots with optional guiding mechanics for the

use of half-height plug-in units.

The backplane and cabling system provides reliable interconnections between plug-in units. In

addition to this, the backplane provides EMC shield to the rear side of the subrack. Common signals

are delivered via the backplane and all other interconnection signals are connected via cabling. This

allows backplane modularity and flexibility in different configurations. Because of flexible cabling

and redundancy it is possible to scale the system to a larger capacity in an active system without

shutting down the whole system.

Cabinet power distribution equipment and four subracks with cooling equipment can be installed

in one cabinet. Openings in the sides of the cabinet behind the subrack backplanes allow direct

horizontal cabling between cabinets.

The dimensions (height x depth) of the plug-in units are either 265 mm x 285 mm, or 115 mm x

285 mm. The width of the plug-in units is 25 mm or a multiple thereof.



RNC196 and RNC450

RNC 196

RNC450



RNC Functional Architecture

E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU

Network InterfacesNIP1 (E1 ATM)NIS1 (STM-1)

Computer UnitsICSU, RRMU, RSMU, OMU, GTPU

Switchingand Multiplexing unitsSFU, MXU, A2SU

Signal Processing

Unit(DMCU)

Timing and Synchronization

unitsTSS3, TBUF

The general functional architecture of the RNC is shown above. Functionality is distributed to a set of

functional units that are entities of hardware and software, or only hardware, capable of accomplishing a

special purpose.

At the high level network element consists of switching functions, interface functions, control

functions, signal processing functions, and system functions (such as timing and power feed).



Units Redundancy

Duplicate (2N) One spare for every active unit.

Replacement (N+1) One spare for a group of PIUs within a functional unit.

Load Sharing (SN+) A group of PIUs within a functional unit acts as resource pool.

No Redundancy



Power Distribution System

Purpose:

Distributes the -48 V/-60 V power from the rectifiers or batteries to the equipment inside the RNC cabinets

Consists of: CPD120-A panel at the top of each cabinet

PD30 plug-in units in each subracks

PD30 controls the cooling equipment of its own subrack on the basis of messages sent by the OMU

Redundancy: None

Units: CPD120-A Cabinet Power Distributor 120 APD30 Power Distribution Plug-in Unit

30 A



Power Distribution System

FTR

FTR

FTR

FTR

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

PD20

TBUF

TSS3

1

PD20

TSS3

TBUF

2

PD20

TBUF

TBUF

4

TBUF

TBUF

3

PD20

CPD80-A RNAC

FTR

FTR

FTR

FTR

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

PD20

TBUF

TSS3

1

PD20

TSS3

TBUF

2PD20

TBUF

TBUF

4

TBUF

TBUF

3

PD20

CPD80 RNAC

1 2 3 413

24

13

24

PD20

1

2

3

4

5

1

2

3

4

5

SECTION 1

SECTION 2(redundancy)

PIU slots 1-4

PIU slots 5-8

PIU slots 9-12

PIU slots 13-16

FANs



PIU Power Distributor

PD30




E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU Timing and Synchronization

unitsTSS3, TBUF



Timing, Synchronization and HMS

1. RNC synchronization and distribution of timing signal

2. Transfer of HW management system messages (from PIUs to OMU)

TSS3

TBUF

TBUF

TBUF

TBUF

TSS3

OMU

Timing signal to PIUs

Centralised fault management in OMU



Timing and Synchronization System (1/2)

Purpose:

Receives an input timing signal from upper network level, and adjusts its local oscillator to long time mean value and delivers this synchronised timing signal as system timing to all plug-in units in the same subrack and TBUF

Collect alarms from the PIUs in the same subrack and transfer them to HMS master (OMU)

3 synchronisation inputs from line interface card

Redundancy: 2N

Plug-in unit: TSS3 Timing and Synchronization SDH Stratum 3



Timing and Synchronization System (2/2)



Timing Buffer (1/2)

Purpose:

The TBUF unit is a clock buffer

Distributes the synchronisation signals generated by the TSS3s to plug-in units not directly fed by the TSS3s.

Collects the alarms from the PIUS in the same subrack and transfers them further to the HMS master net, which brings the alarms to the appropriate OMU.

Redundancy: 2N

Plug-in units: TBUF Timing Buffer



Timing Buffer (2/2)



Timing Bus



Hardware Management System (HMS)

HMS Master Node (HMMN)

HMS Bridge (HMSB)

HMS Slave (HMSS)



HMS Nodes

HMS Master Node (HMMN) Head of Hardware Management System, which has responsible for example selecting the transfer line and supervision of HMS bridge nodes

Reside on OMU

HMS Bridge (HMSB) Divides Hardware Management System into subnetwork, which physically each subrack

Reside on TSS3 and TBUF

HMS Slave (HMSS) Interfaces with for example PIUs power and hardware alarms

Reside on all PIUs except OMS and ESA12/24



HMS Bus




E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU

Switchingand Multiplexing unitsSFU, MXU, A2SU



Switching Fabric Unit (1/2)

Purpose:

Serves as the main switch fabric of the exchange

Supports both point-to-point and point-to-multipoint connection topologies

Handles various ATM service categories.

Redundancy: 2N

Plug-in unit: SF10 ATM Switch Fabric Plug-in Unit 10 GbpsSF20H ATM Switch Fabric Plug-in Unit 20 Gbps



Switching Fabric Unit (2/2)

RNAC



Multiplexer Unit (1/2)

Purpose:

Enables connection of the low-to-medium bit-rate signal processing units and computer units, as well as low-bit-rate network interface units, to the ATM switch fabric

Performs the multiplexing and demultiplexing of ATM cells

Redundancy: 2N

Plug-in unit: MX622-B / MX622-C / MX622-D / MX1G6 ATM Multiplexer Plug-in Unit 622 MbpsATM Multiplexer Plug-in Unit 1,6 Gbps



Multiplexer Unit (2/2)

RNAC



AAL Type 2 Switching Unit (1/2)

Purpose:

The A2SU is an AAL Type 2 CPS minipacket switching unit, which is used in association with the Multiplexing Unit (MXU)

Guarantee bandwidth efficient and limits the transfer delay of AAL type 2 connection

Redundancy: SN+

Plug-in unit: AL2S-A / AL2S-B / AL2S-D Configurable Dynamic Signal Processing Platform (CDSP)



AAL Type 2 Switching Unit (2/2)

AL2S-D

RNAC




E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU

Computer UnitsICSU, RRMU, RSMU, OMU, GTPU



Operation and Maintenance Unit (1/2)

Purpose:

Handles all the RNC's crucial maintenance functions, such as hardware configuration management, Hardware Management System (HMS) supervision, and the associated centralised recovery functions.

Activates appropriate recovery and diagnostics procedures

Serves as an interface between the OMS and the other units

Houses the databases containing entire system software, alarms and radio network configuration.

Redundancy: 2N

Plug-in unit: CCP10/CCP18-A



Operation and Maintenance Unit (2/2)

RNAC

CCP18-A



OMU's storage devices

HDS-B, consist of two Hard Disk Drive (HDD): One for OMU and another for OMS

73 GB formatted storage capacity/disk

Redundancy type : 2N

RNAC



Radio Resource Management Unit (1/2)

Purpose:

Performs centralized part of telecom signaling Controls signaling connections between RNC and CN, and between RNCs.

Maintains centralized information, including PIDs, state changes of subsystems, UL scrambling codes, etc. of the MS.

Paging message grouping and routing to the RRC protocol according to the centralized connection information.

Redundancy: 2N

Plug-in unit: CCP10/CCP18-C



Radio Resource Management Unit (2/2)

RNAC

CCP18-A



Interface Control and Signalling Unit (1/2)

Purpose:

Handles signalling transaction and RRM functions:

Signalling protocols to Iu, Iub, Iur and Iu-BC interfaces for NBAP, RNSAP, RANAP, SABP signalling

ALCAP (Q.2630.1) signalling

RRC signalling

Termination of the UNI-SAAL (Iub), NNI-SAAL/MTP-3 (Iur and Iu) and TCP/IP (Iu-BC) signalling links

Monitoring and recovery of the signalling links

Radio resource management functions

Admission control (AC)

Handover control (HC)

Load control (LC)

Packet scheduling (PS)

Redundancy: N+1




Interface Control and Signalling Unit (2/2)

RNAC

CCP18-A



Resource and Switch Management Unit (1/2)

Purpose:

Establishes connections for calls according to requests from thesignalling computer units (ICSUs)

Handles DSP resource management Allocation of the DSPs and associated computer resources to different tasks, such as macrodiversity combining and data traffic functions.

ATM switching management functions: Establishment of both internal and external connections via the SFU

Management and control of the SFU, A2SU and MXU.

Transmission resource management.

Redundancy: 2N




Resource and Switch Management Unit (2/2)

RNAC

CCP18-A



GPRS Tunnelling Protocol Unit (1/2)

Purpose:

Facilitates RNC connections towards the SGSN Routing based on GTP tunnel ID

UDP/IP (User Datagram Protocol / Internet Protocol) protocols termination

IP and GTP protocol processing

Redundancy: SN+




GPRS Tunnelling Protocol Unit (2/2)

CCP18-A

RNAC




E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU

Signal Processing

Unit(DMCU)



Data and Macro-Diversity Combining Unit (1/2)

Purpose:

WCDMA L1 functions, including macro-diversity combining (MDC) and outer loop power control.

RLC and MAC functions

PDCP (Packet Data Convergence Protocol) protocol processing

GTP termination

Encryption

Redundancy: SN+

Plug-in unit: CDSP-B / CDSP-C / CDSP-DH

Configurable Dynamic Signal Processing Platform



Data and Macro-Diversity Combining Unit (2/2)

RNAC




E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU



Operations and Maintenance Server Unit (1/2)

Purpose:

Local user interface

Interface towards the higher level network management system (OSS)

O&M functionalities which are not handled by other computer unit

Post-processing of Fault management and Performance Data

Redundancy: None

Plug-in unit: MCPC2-A / MCP18-BManagement Computer, Pentium III Connector2



Operations and Maintenance Server Unit (2/2)

MCP18-B

RNAC



Ethernet Switch ESA12 and ESA 24

RNAC




E1/T1/JT1ATM

SFU

MXU

MXU

TBUOMU

CU*

CU*

STM-1ATM VC47VC3

CU*

NIS1/NIS1P

NIP1

MXU

A2SU

CU*

SPU*

WDU

EthernetOMS

FDUWDU

Network InterfacesNIP1 (E1 ATM)NIS1 (STM-1)



Network Interface Unit PDH (NIP1)

Purpose:

ATM network interface with 16 electrical interfaces

SW configurable to E1/T1/JT1

Supports Inverse Multiplexing for ATM (IMA)

Redundancy: None

Plug-in unit: NI16P1ANetwork Interface16 * PDH E1/T1/JT1 (ATM)

RNAC



Network Interface Unit STM-1 (NIS1)

Purpose:

ATM network interface with 4 optical interfaces

VC-4 and VC-3 mapping of ATM cells

SDH transmission protection (MSP 1+1) & equipment protection

Redundancy: None / 2N (NIS1P)

Plug-in unit:

NI4S1-B

Network Interface,

4 * SDH STM-1

(ATM)

RNAC



Multiplex Section Protection (MSP)

Compliant with standard SDH MSP (Multiplex Section Protection)

Against equipment failures (at the interface)

Against point-to-point link failures

Protecting link

Working link

SiteRNC

Working STM-1 interface

Protecting STM-1 interface



Summary of Units Redundancy in RNC

2NNIS1P

NoneEHU

NoneFDU

NoneOMS

SN+DMCU

SN+GTPU

NoneNIP1

NoneNIS1

2NTBU

2NWDU

N+1ICSU

SN+A2SU

2NRRMU

2NRSMU

2NSFU

2NMXU

2NOMU

RedundancyFunctional Unit



RNC450 Capacity Steps

Three capacity steps for higher

Iub Capacity: 450/150

450/300

450/450



Capacity Step RNC 450/150

The RNC 450 capacity step 150 implements the minimum capacity

Fully equipped RNAC cabinet



Capacity Step RNC450/300

The RNC450 capacity step 300 consists of a fully equipped RNAC cabinet and cabinet mechanics for an RNBC cabinet

This includes all 4 subracks for an RNAC cabinet, all needed plug-in unit types for subrack numbers 1 and 2 of an RNBC cabinet and cover plates for subracks numbers 3 and 4 of an RNBC cabinet



Capacity Step RNC450/450

The RNC450 capacity step 450 consists of all the required plug-in unit types in RNAC and RNBC cabinets



Summary Capacity Steps in RNC450

100 00070 00035 000RRC connected mode users

3 5942 8001 950AAL2UP Connectivity Mbps

512300200Number of BTS

1 152900600Number of Carriers

450 300150Iub Throughput Mbps

8 0006 2504 000Erlangs

295 000231 000147 000Busy hour call attempts

360 000284 000181 000Number of Subscribers

RNC450/450RNC450/300RNC450/150High Capacity RNC

Capacity step 6 and 7 can only be done after RNC is fully equipped (Capacity step 5). They will require some

units are upgraded to latest version.



RNC196 Capacity Steps 1/2

RNC196 Capacity Step 1 This is the minimum RNC configuration. The cabinet

RNAC is fully equipped. A second cabinet is not required.

RNC196 Capacity Step 2 The cabinet RNBC contains all four subracks - with

subrack 1 fully equipped.

Subracks 2, 3 and 4 in the cabinet RNBC contain no plug-in units, not even PD20 or TBUF units. These subracks are only equipped with cover plates.

RNC196 Capacity Step 3 The second subrack in cabinet RNBC is equipped in

the same way as the first subrack.

RNC196 Capacity Step 4 The third subrack in cabinet RNBC is equipped

RNC196 Capacity Step 5 The forth subrack in cabinet RNBC is equipped

RNC196 Capacity Step 6 Both cabinets are used and capacity is achieved by

replacing plug in units and/or upgrading to newest variants

RNC196 Capacity Step 7 Both cabinets are used and capacity is achieved by

upgrading to newest variants

1. 2.

3.

4.

5.

6&7



RNC196 Capacity Steps 2/2

Upgrade from capacity step5 (196 Mbps) to capacity step 6, (300 Mbps)-

Requires following plug-in-Unit version levels CCP10 (RRMU, RSMU, ICSU, GTPU), MX622-D (MXU), CDSP-C (DMCU) and CCP18-A (OMU)

Upgrade from capacity step 5 (196 Mbps) to capacity step 7, (450 Mbps)

Requires following plug-in-Unit version levels CCP18-A (OMU,RRMU, RSMU, ICSU, GTPU), MX622-D (MXU), CDSP-C (DMCU) and AL2S-D (A2SU)

5

RNC196/step5

RNC196upg/450

RNC196upg/300

6

7



Capacity Steps in RNC 196

AL2S-B

AL2S-D 3 5943 5942 8002 4001 9501 450950

300M159M85M 122M 450M196M48M

100 000

-

512

1 152

450

8 000

295 000

360 000

70 000

1 300

512

1 152

300

6 800

251 000

300 000

60 000

1 000

512

1 152

196

6 800

251 000

300 000

30 000

550

256

576

85

2 700

99 000

122 000

50 00040 00020 000RRC connected mode users

850700400AAL2UP Connectivity Mbps

420340170Number of BTS

960768384Number of Carriers

15912248Iub Throughput Mbps

5 4004 0001 300Erlangs

199 000147 00048 000Busy hour call attempts

240 000181 00059 000Number of Subscribers

RNC196High Capacity RNC

rnc architecture and hw

Documents

cell update

serving cell

new cabinet

indoor use cabinet

lcs cell coverage

location area update

cabinet level

new mechanics concept