r n w overview

Company Confidential

3G Radio Access Network Integration

Radio Network Overview

Nokia RAN Release Roadmap

RNC: RN2.1

BTS: WN3.0, WN3.0 ED1

AXC: C2.6OSS: OSS4 CD set

3GPP: Rel-5

RNC: RN2.0

BTS: WN2.0, WN2.0 ED1, WN2.0 ED2AXC: C2.1, C2.5

OSS: OSS3.1 CD set

3GPP: Rel-4

HSPA01

RAN05 RAN05.1

HSPA01.1

HSDPA HSDPA

RAN RAN

RAS05 RAS05.1

RAN Rel’99

RANRNC: RN1.5BTS: WN1.3, WN2.0

AXC: C2.0OSS: OSS3.1

3GPP: Rel-99

RNC: RN2.2

BTS: WN3.2AXC: C2.7

OSS: OSS4.1 CD set

3GPP: Rel-5

Radio Network Objects

Radio Network Objects (cont.)

• RNC : network element in a radio access network, which is in charge of controlling the use and

integrity of the radio resources

• WBTS : base transceiver station of the third generation network

• WCELL : cell of the third generation network

• CoCo : managed logical object in the radio network configuration management, displaying the

transmission in the Iub interface and specifying the Iub link configuration to the ATM level

• FMCx : managed object in the radio network configuration management, including the parameters

for measuring the transmission frequencies

• HOPx : information indicating handover decision parameters which control the handover from the

serving cell to a specified neighbouring cell

• ADJx : relationship that is defined between a wideband code division multiple access (WCDMA) cell

and a neighbouring cell

• WSMLC : serving mobile location centre that is used in a third generation network and that has

specific parameters for each radio network controller

• WLCSE : logical object that contains WCDMA cell specific location parameters that are needed for

the positioning algorithms

RNC Object (General)

RNC Object (Core Network)

RNC Object (Neighbor RNCs)

Connection Configuration (CoCo)

WBTS A2EA Calculation Mode

• RAN1

• RAN04

Example:

With BTS_ID 3001 and WAM 2 is installed

• RAN1 � 4903001001

• RAN04 � 4903001020

49 + 5 DIGITS BTS_ID + 00 + 1 DIGIT WAM_ID NUMBER

49 + 5 DIGITS BTS_ID + 0 + 1 DIGIT WAM NUMBER + 0

AAL2 Multiplexing

• Feature since RAN04

• Enable statistical multiplexing gain

• Save Iub transmission capacity

• Reduce the number of VCC between BTS and RNC

Statistical Multiplexing Gain

Iub without AAL2 Multiplexing

AAL2SIG

AAL2UP

VC=120

VC=121

VC=122

Iub with AAL2 Multiplexing

AAL2SIG

AAL2UP

VC=120

AAL2SIG without AAL 2 Mux

AAL2SIG with AAL 2 Mux

AAL2UP without AAL2 Mux

Iub Dimensioning

• Required VCC

AAL5One per BTSOne per BTSOne per BTSO&M

AAL5One per BTSOne per BTSOne per WAMAAL2sig

AAL5One per BTSOne per WAMOne per WAMDNBAP

AAL5One per BTSOne per BTSOne per BTSCNBAP

AAL2One per BTS (DCH) (*)

One per BTS (HSDPA)

One per BTS (DCH) (*)

One per BTS (HSDPA)

One per WAM (DCH) (*)

One per BTS (HSDPA) (**)U-plane

ATM adaptation

layerFlexi BTS

BTS with BTS AAL2

multiplexing

BTS with basic AAL2

multiplexingVCC

Iub Dimensioning (cont’)

• Iub capacity = U-Plane + CNBAP + DNBAP + AAL2sig + O&M

• 150 CPS (~ 64 kbps) of O&M is recommended per BTS.

• Min CNBAP, DNBAP and AAL2SIG is 39 CPS each and max 2100 per WAM

• The CNBAP bandwidth requirement depends on,

• the call setup

• radio link addition (soft handover)

• the RRI period

• The DNBAP capacity requirement depends on,

• the number of calls

• call lengths

• RLM report period

Iub Dimensioning (cont’)

• Signaling load 6 – 7 % of Iub capacity

• Ratio CNBAP : DNBAP : AAL2SIG

approximately 1 : 2 : 1

• Examples:

6.8% of Iub129.7Kbps

306Sum cps

78AAL2Sig

150DNBAP

78CNBAP

cpsLink capacities

3Num cells/BTS

80Max. users/BTS

1+1+1 BTS, 2*WSPC, 1*WAM, 1*E1

~ 80 AMR calls

6.9% of Iub254.4Kbps

600Sum cps

150AAL2Sig

300DNBAP

150CNBAP

cpsLink capacities

3Num cells/BTS

160Max. users/BTS

1+1+1 BTS with BTS AAL2 multiplexing, 3*WSPC, 2*WAM, 2*E1

~ 160 AMR calls

FMCS Object

Addition Window

Ra= 2.5 dB

Drop Window

Rd= 4 dB

Replacement Window

R = 2 dB

• When number of cells in active set = maximum

• Monitor cell become better than an active set cell

• Measurement report to RNC for “Cell Replacement”

HOPS Object

WBTS Objects

WCELL Object

ADJS Object

Create Adjacency

Nokia UltraSite®WBTS Architecture

IFUIFU

DSC-BUS

RT-bus

RR-bus

ST-bus SR-bus

WSM WAM

DSC-BUS

WAMWSM

DSC-BUS

WAMWSM

r n w overview

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