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Admission control&congestion

control

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Content

Feature Description Function Introduction

Related Measurement

Downlink Power-Based Admission Control

Uplink Interference-Based Admission Control

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Function Introduction

Why to Perform Admission Control Avoid system overload, ensure system stability

Access as many services as possible

When to Perform Admission Control

RRC, RAB setup, Handover, DRBC

What to Perform in Admission Control

Uplink interference

Downlink power Channelization code resources

CE resource

User number

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Content

Feature Description Function Introduction

RelatedMeasurement

Downlink Power-Based Admission Control

Uplink Interference-Based Admission Control

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Uplink interference

RTWP common measurement on lub interface Report period of RTWP: 2s

Uplink background noise

Automatic background noise Measurement

(BckNoiseAdjSwh)

initial back noise (OriBckNoise)

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Downlink power

TCP common measurement on lub interface Report period of TCP: 2s

Predict P (required real-time P-CPICH Ec/No)

RRC connection setup - measurement on RACH

Intra-RNC handover - reported in events

Other cases - CpichEcNo configured in the OMC

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Content

Feature Description Function Introduction

Related Measurement

Downlink Power-Based Admission Control

Uplink Interference-Based Admission Control

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Parameter Configuration

Downlink admission threshold (Pthreshold)

Pthreshold= MAXDlTxPwr DchDlAcThresh

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Admission Procedure

Ptotal_old

+P>=Pthreshold

DL AC Threshold

Max Tx Power of Cell

Base Priority of Traffic

Predicted Increasing DL Tx Power after access the new traffic

Related to traffic Qos and Pathloss etc

Cell Tx Power ( NodeB report to RNC by common measurement report)

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HSDPA DL Power admission

If parameter HsdschTotPwrMeth set to RNC mode

HS-PDSCH, HS-SCCH, E-AGCH, E-RGCH and E-HICH Total Power

>=max(MinHsdpaTotalPower, P + ) ,

The total power is controlled by RNC.

If parameter HsdschTotPwrMeth set to NodeBmode

MaxSpi

Spi

Spi 0

HSDSCHRequiredPower

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Content

Feature Description Function Introduction

Related Measurement

Downlink Power-Based Admission Control

Uplink Interference-Based Admission Control

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Parameter Configuration

Uplink admission threshold (Ithreshold) Ithreshold= N0+ DchUlAcThresh

Utran Cell (utranCell) DchUlAcThreshAccess Control Related to Basic

Priority(BPriAc)BPriAcIndex

Basic Priority Management(BasPri) BasicPrio

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Admission Procedure

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