RNC -3820

(Brief Details about 3G-RNC)

1

SC

BD

F

1

TU

B

GP

B (m

Mp)

CM

XB

ET

-IPG

G

PB

(C1 M

P)

SP

B

GP

B (m

MP

) G

PB

(C2 M

P)

GP

B (m

MP

)S

PB

ET

M F

-41 D

UM

MY

SP

B

ET

M F

-41 D

UM

MY

ET

M F

-4 D

UM

MY

2 3D

UM

MY

DU

MM

Y

GP

B (C

2 MP

) S

PB

G

PB

(C1 M

P)

ET

-IPG

TU

BC

MX

B

SC

BD

F

4 5 76 8 10 11 129 13 15 1916 17 20 2114 18 2824 25 272622 23

APP

APP

POW CAB

TOWARDS APP,PORT-20,25

SSU (Clock Sync Source)

BTSOL MUX

TOWARDS APP,PORT-70, initially LOGIN and all software are installed in this card. (IMP CARD)

SMA -9pin F connector cable

MPBN (SWITCH)

MA

ST

ER

shelfE

XT

EN

DE

D sh

elfE

XT

EN

DE

D sh

elf

SP

B

Port-37 MGW

MSS OSS

Port-37 Port-60

Port-60

Mur interface

IuPs IuCs signalling

Mub interface

Node-B

RNC – 3820 (SHRNC)GPS

RNC Products (P7)

RNC 3810 – the first generation Ericsson RNC Throughput limited to approx. 1 200 Mbit/s due to inter subrack

communiction bottleneck Power feeding limited to 800 W per subrack

RNC 3820 – the second generation Ericsson RNC Modified architecture for increased throughput (2-4 Gbit/s),

e.g. introduction of 10 GE switching infrastructure between and within subracks

Power feeding increased to 2 400 W per subrack for introduction of high capacity hardware

RNC -3820 Cabinet

The letters in the figure above denote the following:•A— ES •B— MS •C — Active Patch Panel (APP)

RNC 3820 Maximum Configuration

Fan unit 2

Extension Subrack 1

Main Subrack

Active Patch Panel

Extension Subrack 2

Main Cabinet

Fan unit 1

MainSubrack

Air intake

Fan unit

High Capacity Subrack (HCS)Fan unit

ExtensionSubrack 1

Air intake

Fan unit

Fan unit

ExtensionSubrack 2

Air intake

Fan unit

Fan unit

Cabinet LayoutBYB 501• 1 - 3 High Capacity Subracks

Same mounting as for RNC 3810

Active Patch Panel

Active Patch PanelConnection Fields

RNC 3820 Node Layouts Examples

RNC 3820 – 110

MS

ES-1 (S1)

ES-2 (S2)

RNC 3820 – 70

MS

ES-1 (S1)

RNC 3820 – 30

MS

Throughput: 550 Mbps 1 350 Mbit/s 2 000 Mbit/s Connectivity: 256 Iub Links 768 Iub Links 768 Iub Links

768 cells 2 304 cells 2 304 cells

Node Size: A B C

GPB- General Purpose Processor Board

The GPB operates as a Main Processor (MP). It contains and executes the main part of the RNC software. In the MS, four GPB pairs are duplicated to provide redundancy

SCB – Switch Core BoardCell switch core functionality Circuits for System Clock (19.44 MHz) distribution Interfaces for node-internal links Interfaces for fan supervision and control Interfaces for GPS information Power filtering and distribution Over-temperature protection for subracks

TUB – Timing Unit Board

Interface for external clock input (an alternative to the transmission clock) Interface for GPS signal input Generation of reference timing signals Regeneration of reference timing signals Stabilization of reference timing signals Handling of node synchronization procedures System Clock oscillator (19.44 MHz)

SPB – Special Purpose Board

- Packet Data Router (PDR), terminates the GTP-U protocol towards the Packet CN. - Common Channel, terminates configured radio channels, for example FACH. - Dedicated Channel, terminates dynamic radio channels, for example DCH, with or without HW acceleration. - Point to multipoint - Iu, MBMS stream multicasting between subracks. - Point to multipoint - Iub, MBMS stream multicasting towards RBSs, runs with DCH application

ET Boards – Exchange Terminal Board- The following are different versions of the ET boards that implement adaptations to different physical media and transmission standards: - 155 Mbps (STM-1 and OC3c), optical link – ET-MF4 - 155 Mbps (STM-1 and OC3c), channelized (VC-11 and VC-12) optical link — ET-MF41 - 1 Gbit Ethernet. The board also serves as an ATM to Ethernet gateway — ET-IPG - 10Gbit Ethernet (eight Ethernet ports on front panel) The board is also used for high capacity connections between subracks — CMXB

The CMXB is an Ethernet switch board used both for internal and external transport in the RNC and for all external IP traffic. The board is equipped with twelve 10G ports in the backplane for internal communication between boards in the subrack, and eight 10G ports in the front for inter-subrack communication through Ethernet Subrack Links (ESL).

CMXB

6.1 IuThe Iu is the interface between the RNC and Circuit-Switched (CS) or Packet-Switched (PS) CN. The Radio Access Network Application Part (RANAP) protocol is used for traffic-related control signalling to the CS and PS CN, and for GTP-U protocols to the PS CN. User plane and signalling over Iu may use ATM or IP. 6.2 IurThe Iur is the interface between two RNCs. This interface carries the Radio Network Subsystem Application Part (RNSAP), used for traffic-related control signalling. For user data, Frame Protocols are used. User plane and signalling over Iur may use ATM or IP). 6.3 IubThe Iub is the interface between the RNC and an RBS. This includes the Node B Application Part (NBAP), used for traffic related control signalling. For user data, Frame Protocols are used. User plane and signalling for an RBS may use either ATM or IP. 6.4 UuThe Uu is the air interface between the UE and the network. The interface is divided into three layers and the different layers terminate in different nodes as follows: Layer 1 terminates partly in the RBS and partly in the RNC. Layer 2 terminates mainly in the RNC. Layer 3 terminates mainly in the RNC, but with many messages are transparently transferred between the UE and the CN by the RNC. Broadcast Channel (BCH) terminates in the RBS. 6.5 MurThe Mur management interface provides element and network management of the RNC. Users of the interface are the RNC Element Manager, OSS-RC, or an external Management System.

THANKS

(By- Amitabh Panda)

(NESA CIRCLE)