Nokia LTE Layering Strategy PA 1.4 Draft

(1)

1

1 NOKIA TEAM

NOKIA TEAM

LTE LAYERING

L2300 L2100 L1800 L900

(2)



LTE Layering & Load Balancing Principle



LTE Layering Methodology

⁻

Spectrum Bandwidth

⁻

Layer Coverage

⁻

UE Capability

⁻

Service Bearer Segregation



LTE Layering Parameter Setting

⁻

Idle Mode

⁻

Connected Mode

CONTENT

(3)



LTE Layering & Load Balancing Principle



LTE Layering Methodology

⁻

Spectrum Bandwidth

⁻

Layer Coverage

⁻

UE Capability

⁻

Service Bearer Segregation



LTE Layering Parameter Setting

⁻

Idle Mode

⁻

Connected Mode

CONTENT

(4)



LTE Layering & Load Balancing Principle



LTE Layering Methodology

⁻

Spectrum Bandwidth

⁻

Layer Coverage

⁻

UE Capability

⁻

Service Bearer Segregation



LTE Layering Parameter Setting

⁻

Idle Mode

⁻

Connected Mode

CONTENT

(5)

Layering & Load Balancing Guide Principle

• The underlying principle in layering is to keep it simple and tractable

• Layering is basically implemented via very small number of design parameters:

• Absolute priorities

• “Hard exit threshold” = minimum level to camp in a cell

• “Soft exit threshold” = level to exit the layer if another lower priority layer is available

• “Entry threshold” = level to enter a higher priority layer

(6)

Layering & Load Balancing Guide Principle

• The target priority is to roughly balance average User throughput between layers this

will compensate imbalance on PRB utilization, Connected User

• Factors to consider



Balancing end user experience on layers



Layer carrier frequency and bandwidths



Layer coverage footprints



Site density per layer



UE ecosystem distribution at Networks

(7)



LTE Layering & Load Balancing Principle



LTE Layering Methodology

⁻

Spectrum Bandwidth

⁻

Layer Coverage

⁻

UE Capability

⁻

Service Bearer Segregation



LTE Layering Parameter Setting

⁻

Idle Mode

⁻

Connected Mode

(8)

SPECTRUM & COVERAGE FOR LAYERING APPROACH

L2300_20 (7)

L2300_10 (5)

L1800_15 (6)

L2100_5 (4)

L900_5 (3)

-5 dB

2 dB

9 dB

Layer Access Mode

Band

Bandwidth

Pmax (watt)

Pmax (dBm) PRS power (dBm) FSL ( f )

Rx

Delta (dB)

L2300 TDD 2300 20 20 43.0 12.22 67.2 -55.02 -5.14 L2300 TDD 2300 10 10 40.0 12.22 67.2 -55.02 -5.14 L2100 FDD 2100 5 20 43.0 18.24 66.4 -48.21 1.67 L1800 FDD 1800 15 30 44.8 15.23 65.1 -49.88 0

L900 FDD 900 5 20 43.0 18.24 59.1 -40.85 9.03

• L2300 suitable for capacity densification with less

coverage thus it should define as highest layer to grab

traffic aggressively

• Existing L1800 has higher capacity and wider coverage

thus it should define as capacity layer and 2

nd

_highest

priority

• L2100 has limited bandwidth and limited coverage, it

should define as less priority than L1800 to maintain end

user experience.

• L900 has wider coverage but it only has 5 MHz

bandwidth with limited capacity, thus it should define as

last priority.

(9)

Geo Location for Layering Verification

• Geo – Location can verify

implemented Layering strategy by

analyzing the distribution of UE among

layers within eNode B.

• As sample beside, Most of UE camp

on L1800 (EARFCN 1875) compare to

L2100 (EARFCN 126) this might

caused by UE capability

• 96% UE has RSRP > -100 dBm where

this indicate overlay coverage to

L2100 as potential target area for load

balancing. Probability balancing at

L2100 can take over ~16% from total

good sample ( > -100dBm) based on

coverage approach.

• L1800 is still dominance taking over

the traffic and possible to be more

offloaded to L2100 based on coverage

approach

• Should Not available or less sample at

L2100 need to check whether any

layering parameters set is properly

define or less UE ecosystem at this

area,

MRBTSID EARFCN Layer Sample GT_-100dbm % Potential

Balancing Ave_Dist_GT_-100dbm 126 L2100 7057 6828 96.75% 15.76% 563.6 1875 L1800 36274 32051 88.36% 73.97% 902.59 43331 38879 248631 Total

(10)

UE CAPABILITY ANALYSIS

0 200000 400000 600000 800000 1000000 1200000 1400000 1600000 1800000

BALNUS KALIMANTAN PUMA SULAWESI

DEVICE DISTRIBUTION

SUPPORT_3G_900 SUPPORT_3G_2100 SUPPORT_4G_900 SUPPORT_4G_1800 SUPPORT_4G_2100 SUPPORT_4G_FDD_2300 SUPPORT_4G_TDD_2300 #LTE_TERMINALL

24%

19% 11%

46%

TIMING ADVANCE DISTRIBUTION < 500 m, BALI - URBAN AREA

TA1 : x<50% TA2 :70>x>=50% TA3: 80%>x>=70% TA4 : x>80%

• Setting L2300 as highest priority still reasonable refers to UE capability information, where around ~ 75% UE are TDD 2300 capable

in the network, it indicates potential UE which can be offloaded from L1800 to L2300 for capacity densification when L2300 set as

highest priority . This information should be combine with coverage point of view. For Example : Urban area ( Denpasar City a nd

Badung) in Bali case, around 46% of cell has TA < 500 m with number of sample > 80%, these cells are potential to be offloaded to

L2300 as red site solution and layering to L2300 will perform effectively

• L2100 and L900 capable UE is also quite mature where more less 75% UE in the network capable FDD L900 and more than 85%

L2100. This ecosystem will support on layering performance.

(11)

SERVICE BEARER BASED APPROACH

L2300_20 (7)

L2300_10 (5)

L1800_15 (6)

L2100_5 (4)

L900_5 (3)

• Service bearer differentiation can be

applied for GBR and Non GBR layer.

• Specific layer is prioritized handling GBR

service, in the other hand other layers

are specify for Non GBR traffic in order to

maintain non GBR cell throughput

services

• L900 with wider coverage and limited 5

MHz bandwidth is more priority handling

GBR service

• L2100 can be the 2

nd

_{GBR service handler}

If there is no colo L900.

• L1800 & L2300 are focused handling non

GBR traffic capacity

• This differentiation is using Service Base

Hand Over features. LTE1127 Service

based mobility trigger

1

st

_GBR

2

nd

_GBR

Non GBR

(12)



LTE Layering & Load Balancing Principle



LTE Layering Methodology

⁻

Spectrum Bandwidth

⁻

Layer Coverage

⁻

UE Capability

⁻

Service Bearer Segregation



LTE Layering Parameter Setting

⁻

Idle Mode

⁻

Connected Mode

(13)

Layering Parameter Setting

IDLE MODE LAYERING STRATEGY

1 CONNECTED MODE LAYERING STRATEGY

2

(14)

U2100 F1 is prioritized layer for PS redirection or PS Handover

U2100 F2 is prioritized for CSFB

U900 is less priority layer for CSFB and redirection. All layer activate reselection from

and to LTE, Smart LTE layering is enable at cell with LTE overlay coverage

RADIO NETWORK LAYER

L2300_20 (7)

L1800_15 (6)

U2100 (2)

U900 (1)

GSM (0)

TDD - L2300 20 MHz reserved highest priority in Layering for capacity issue.

FDD - L1800 15 TDD - L2300 10 MHz set as 2

nd

_{priority layering}

TDD - L2300 10 MHz reserved 3

rd

_{priority in layering}

FDD - L2100 5 MHz has 4

rd

_{priority in layering since it has limited capacity}

FDD - L900 5 MHz has 5

rd

_{priority in layering}

Load balancing among layers using Idle Mode Load Balancing, Connected load

balancing subject to trial

L2300_10 (5)

GSM is will handle voice traffic and encourage for traffic migration to LTE or UTRAN

L2100_5 (4)

L900_5 (3)

(15)

IDLE MODE STRATEGY

RAT_1 f_1

L2100_5

U2100

U900

CSFB

SLL

U2100

U900

L2100_5

L1800_15

U2100

U900

Cell Priority Setting: L1800 (6) > L2100 (4) > L900 (3)

CSFB

_CSFB

SLL

L1800 <-116 dBm L2100> -110 dBm L1800 >-110 dBm L1800 >-110 dBm L1800 <-116 dBm L900 > -110 dBm

Reselection Intra Frequency

Start measure = -62 dBm all layer

Qrxlevmin = -124 dBm

Applied for all LTE Layer

L900

U2100

U900

L900

CSFB

SLL

L2100 <-116 dBm L900 > -110 dBm L2100_10 >-100 dBm

SLL

L21/L900 <-116 dBm

U21/900 > -101 dBm

Reselection Inter Frequency

Start measure = -104 dBm L900 & L2100

L900

L2300_20/10

L1800_15

L2100_5

L2300_20/10

L2300 <-116 dBm L1800> -110 dBm L2300 >-110 dBm

(16)

IDLE MODE LOAD BALANCING

L2100_5

L1800_15

• L2300_20MHzhashighestpriorityonlayeringtodensifyhightrafficareaandoffloadingL1800redsitethusitshould

aggressivelygrabtraffic.ItsMLBtriggertoexitlayershouldlessaggressive.

• L1800_15MHzhas2

nd

_{highestselectionpriorityatSIBBroadcastandithasbettercapacity,theIMLBtriggershouldset}

lessaggressivelytomakeUE2

nd

_{prefercamponL1800andgivebetteruserexperienceatL1800insteadofL2100and}

L900withlimited5MHzcapacity.

• TargetcarrierforloadbalancingshouldhasRSRP>-95dBmRSRPforFDD2100&L900,>-100dBmRSRPand-12dB

RSRQforFDD1800andL2300toavoidpingpongandUEcamptoworstcarrier

• FDD1800&L2300Loadbalancingwillbetrigered ifCompositeAvailableCapacity(CAC)islessthan30%,whileFDD

2100&FDD900willtriger ifCAC<70%whichmeansamoreaggressive

• idleLBCapThresh &idleLBPercentageOfUes areadjustabletoobtainexpectedbalancingfigureandenduserexperience

-100 dBm

-95 dBm

L900_5

L2300_20/10

LNBTSMO actIdleLBParameter Name FDD L1800_15MHz FDD L2100_5MHz FDD L900_5MHz FDD L2300_20 MHz FDD L2300_10MHz1 1 1 1 1

LNBTS actSelMobPrf 0 0 0 0 0 LNBTS actMeasBasedIMLB 1 1 1 1 1 LNBTS reportTimerIMLBA4 3000 3000 3000 3000 3000 LNCEL idleLBPercentageOfUes 40 70 70 40 40 LNCEL idleLBCapThresh 30 70 70 30 30 LNCEL idleLBCelResWeight 100 30 30 40 70 LNCEL targetLoadGbrDl 75 60 60 50 50 LNCEL targetLoadnonGbrDl 85 70 70 75 75 LNCEL targetLoadPdcch 75 60 60 50 50 LNCEL t320 20 10 10 20 20

(17)

IDLE MODE LOAD BALANCING

m r b t s I d l n B t s I d i r f i m I d d l C a r F r q E u t e n a b l e A 4 I M L B e u t C e l R e s P r i o i d l e L B E u t C e l R e s P r i o i d l e L B E u t C e l R e s W e i g h t i n t e r F r q T h r H i n t e r F r q T h r L i n t e r P r e s A n t P i n t e r T R e s E u t m e a s B d w m i n D e l t a R s r p I M L B m i n D e l t a R s r q I M L B m i n R s r p I M L B m i n R s r q I M L B p M a x I n t e r F q O f f F r q q Q u a l M i n R 9 q R x L e v M i n I n t e r F L2300_20 L2300_20 1 L2300_10 1 6 5 40 14 1 4 1 1 3 3 3 - 95 - 12 24 1 5 - 20 -124 L2300_20 L2300_20 2 L1800 1 5 6 100 14 14 1 1 4 3 3 - 100 - 12 24 15 -20 -124 L2300_20 L2300_20 3 L2100 1 4 4 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L2300_20 L2300_20 4 L900 1 3 3 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L2300_10 L2300_10 1 L2300_20 1 6 6 70 14 1 4 1 1 3 3 3 - 95 - 12 24 1 5 - 20 -124 L2300_10 L2300_10 2 L1800 1 5 5 100 14 14 1 1 4 3 3 - 100 - 12 24 15 -20 -124 L2300_10 L2300_10 3 L2100 1 4 4 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L2300_10 L2300_10 4 L900 1 3 3 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L1800 L1800 1 L2300_20 1 6 6 70 14 14 1 1 3 3 3 -95 -12 24 15 -20 -124 L1800 L1800 2 L2300_10 1 5 5 40 14 14 1 1 4 3 3 -95 -12 24 15 -20 -124 L1800 L1800 3 L2100 1 4 4 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L1800 L1800 4 L900 1 3 3 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L2100 L2100 1 L2300_20 1 5 5 70 14 14 1 1 3 3 3 -95 -12 24 15 -20 -124 L2100 L2100 2 L2300_10 1 4 4 40 14 14 1 1 4 3 3 -95 -12 24 15 -20 -124 L2100 L2100 3 L1800 1 6 6 100 14 14 1 1 2 3 3 -100 -12 24 15 -20 -124 L2100 L2100 4 L900 1 3 3 30 14 14 1 1 2 3 3 -95 -12 24 15 -20 -124 L900 L900 1 L2300_20 1 5 5 70 14 14 1 1 3 3 3 -95 -12 24 15 -20 -124 L900 L900 2 L2300_10 1 4 4 40 14 14 1 1 4 3 3 -95 -12 24 15 -20 -124 L900 L900 3 L1800 1 6 6 100 14 14 1 1 2 3 3 - 100 -12 24 15 -20 -124 SOURCE L900 SOURCE 2100 SOURCE L1800 SOURCE 2300_10 Mhz SOURCE 2300_20 Mhz

L2100_5

L1800_15

L900_5

L2100_5

L1800_15

L900_5

100

30

• Target carrier weighting are set with L1800 has

highest weighting for better end user experience.

• L900 and L2100 has less weighting as target carrier for

reselection due to less capacity (5 MHz)

• Weighting is adjustable to obtain expected balancing

figure

• Load balancing figure is also subject to UE band

capability in the network

(18)

LAYERING STRATEGY

IDLE MODE LAYERING STRATEGY

1 CONNECTED MODE LAYERING STRATEGY

2

(19)

CONNECTED MODE STRATEGY

RAT_1 f_1

L2100_5

U2100

U900

U2100

U900

L2100_5

L1800_15

U2100

U900

A3 = 5 dB/A5 Event

Intra Freq measurement start = -50

dBm

A3 Event

Redirection < -116 dBm

PS HO < -115 dBm

L900

A3 = 3dB/A5 Event A3 = 5 dB/A5 Event

L900

A3 = 3dB/A5 Event

Inter Freq measurement start :

L2300_20 MHz = -108 dBm

L2300_10 MHz = -105 dBm

L1800 = -108 dBm

L2100 = -105 dBm

L900 = -105 dBm

A3 = 5dB/A5 Event

Redirection < -116 dBm

PS HO < -115 dBm

Redirection < -116 dBm

PS HO < -115 dBm

L2300_20/10

A3 = 5dB/A5 Event A3 = 3 dB/A5 Event

(20)

CONNECTED MODE STRATEGY

Handover Measurement Triggers

threshold1 = 75 = -65 dBm

threshold2a = 36 = -104 dBm

threshold2InterFreq = 32 = -108dBm

threshold2Wcdma = 28 = -112 dBm

threshold4 = 24 = -116 dBm

Handover Measurement Triggers

threshold1 = 75 = -65 dBm

threshold2a = 40 = -100 dBm

threshold2InterFreq = 36 = -104dBm

threshold2Wcdma = 24 = -112 dBm

threshold4 = 24 = -116 dBm

L1800 & L2300

L900 & L2100

m r b t s I d l n B t s I d l n H o I f I d a 3 O f f s t e R s r p I n t e r F r e q 3 R e _a

p o r t I n t e r v a l R s r p I n t e r F r e q a 3 T i m e T o T r i g g e r R s r p I n t e r F r e q a 5 R e p o r t I n t e r v a l I n t e r F r e q a 5 T i m e T o T r i g g e r I n t e r F r e q e u t r a C a r r i e r I n f o h y s A 3 O f f s t e R s r p I n t e r F r e q h y s T h r e s h o l d 3 I n t e r F r e q i n t e r P r e s A n t P m e a s Q u a n t I n t e r F r e q m e a s u r e m e n t B a n d w i d t h o f f s t e F r e q I n t e r t h r e s h o l d 3 I n t e r F r e q t h r e s h o l d 3 a I n t e r F r e q L2300_20 L2300_20 1 8 2 8 1 8 L2300_10 0 0 0 0 5 15 32 36 L2300_20 L2300_20 2 6 2 8 1 8 L1800 0 0 1 0 5 15 32 35 L2300_20 L2300_20 3 10 2 8 1 8 L2100 0 0 1 0 5 15 30 35 L2300_20 L2300_20 4 10 2 8 1 8 L900 0 0 1 0 5 15 30 35 L2300_10 L2300_10 1 6 2 8 1 8 L2300_20 0 0 0 0 5 15 32 35 L2300_10 L2300_10 2 6 2 8 1 8 L1800 0 0 1 0 5 15 32 35 L2300_10 L2300_10 3 10 2 8 1 8 L2100 0 0 1 0 5 15 30 35 L2300_10 L2300_10 4 10 2 8 1 8 L900 0 0 1 0 5 15 30 35 L1800 L1800 1 10 2 8 1 8 L2300_20 0 0 0 0 5 15 30 35 L1800 L1800 2 10 2 8 1 8 L2300_10 0 0 1 0 5 15 30 35 L1800 L1800 3 10 2 8 1 8 L2100 0 0 1 0 5 15 30 35 L1800 L1800 4 10 2 8 1 8 L900 0 0 1 0 5 15 30 35 L2100 L2100 1 6 2 8 1 8 L2300_20 0 0 0 0 5 15 34 38 L2100 L2100 2 6 2 8 1 8 L2300_10 0 0 1 0 5 15 34 38 L2100 L2100 3 6 2 8 1 8 L1800 0 0 1 0 5 15 34 38 L2100 L2100 4 10 2 8 1 8 L900 0 0 1 0 5 15 30 35 L900 L900 1 6 2 8 1 8 L2300_20 0 0 0 0 5 15 34 38 L900 L900 2 6 2 8 1 8 L2300_10 0 0 1 0 5 15 34 38 L900 L900 3 6 2 8 1 8 L1800 0 0 1 0 5 15 34 38 L900 L900 4 10 2 8 1 8 2100 0 0 1 0 5 15 30 35 SOURCE 2300_20 Mhz SOURCE 2300_10 Mhz SOURCE L1800 SOURCE 2100 SOURCE 900

(21)

IRAT Handover & Redirection Strategy

RAT_1 f_1

L23/L21/L18/L9

U2100

L23/L21/L18/L9

U2100

U900

CSFB with

Redirection

PS HO

LTE < -115 dBm

3G > -105 dBm

U2100

U900

Redirection

LTE < -116dBm

Connected Mode :

• CS services by CSFB with

Redirection

• IRAT PS Handover and PS

redirection are

implemented for

connected mode mobility

to UTRAN

• Smart LTE Layering used for

redirection from 3G to LTE

• SRVCC might be applied

when VoLTE is

implemented in Network

(22)

CSFB & REDIRECTION TO 3G

U2100 F1/F2/F3

U900

U2100 F1/F2/F3

U900

CSFB priority

Redirection

_priority

CSFB Priority setting:

U21 F1 > U21 F2 > U9 F3

PS Redirection Priority setting:

U21 F2 > U21 F1 > U9 F3

SLL

3G > -104 dBm

PS Redirection trigger:

-116 dBm

CSFB via redirection Activation

LNBTS

actCSFBRedir= 1 = enabled

Redirection Trigger

LNCEL

threshold4 = 24 = -116 dBm

a2TimeToTriggerRedirect = 5 = 128ms

Redirection to 3G

REDRT

Priority setting:

U21 F1 > U21 F2 > U9 F3 for CSFB

U21 F2 > U21 F1 > U9 F3 for PS Redirect

Redrtid

0

1

2 redirFreqUtra

U900

U2100

csfallBPrio

4

1

2 emerCallPrio

4

1

2 redirectPrio

4

3

2 All U21 layers should have same priority and higher than U9

Note : 1 is highest priority

L23/L21/L18/L9

(23)

IRAT PS HO TO 3G

U900

CSFB priority

Serving cell

RSRP < -115 dBm

3G Nbrcell:

EcNo> -14 dBm

Or

RSCP > -105 dBm

SLL

3G > -104 dBm

Handover Activation

LNBTS

actHOtoWcdma= 1 = true

actCsfbPsHoToUtra= 1 = true

Handover Measurement Triggers

LNCEL

threshold2a = 36 = -104 dBm

threshold2Wcdma = 28 = -112 dBm

IRAT HO to 3G Triggers

LNHOW

reportIntervalUtra= 2 = 480 ms

PS Handover

b2Threshold1Utra = 25 = -115 dBm

b2Threshold2UtraEcn0 = 24 = -12 dB

b2Threshold2UtraRscp = 10 = -105 dBm

b2TimeToTriggerUtraMeas = 9 = 480 ms

Neighbours

LNADJW

Create by ANR to UTRAN

IRAT 3G Measurement trigger: -112 dBm

L23/L21/L18/L9

U2100 F1/F2/F3

(24)

SRVCC TO 3G (OPTIONAL)

U900

CSFB priority

Serving cell

RSRP < -112 dBm

3G Nbrcell:

EcNo> -12 dBm

Or

RSCP > -100 dBm

SLL

3G > -104 dBm

SRVCC Activation

LNBTS

actSrvccToWcdma = 1 = true

actServBasedMobThr= 1 = true

SRVCC Measurement Triggers.

LNCEL (L1800,L2300)

threshold2aQci1 = 34= -106 dBm

threshold2WcdmaQci1 = 30 = -110 dBm

LNCEL (L900,L2100)

threshold2aQci1 = 34= -102 dBm

threshold2WcdmaQci1 = 30 = -104 dBm

SRVCC Threshold ( L1800, L2300)

b2Threshold1UtraQci1 = 25 = -112 dBm

b2Threshold2UtraEcnoQci1 = 24 = -12 dB

b2Threshold2UtraRscpQci1 = 10 = -100 dBm

b2TimeToTriggerUtraMeas = 9 = 480 ms

Neighbours

LNADJW

Create by ANR to UTRAN

SRVCC 3G Measurement trigger

L1800/L2300 : -110 dBm

L900/L2100 : -104 dBm

L23/L21/L18/L9

U2100 F1/F2/F3

SRVCC Threshold ( L2100, L900)

b2Threshold1UtraQci1 = 25 = -106 dBm

b2Threshold2UtraEcnoQci1 = 24 = -12 dB

b2Threshold2UtraRscpQci1 = 10 = -100 dBm

b2TimeToTriggerUtraMeas = 9 = 480 ms

(25)

VoLTE Layering ( OPTIONAL)

L2300_20 (7)

L2300_10 (5)

L1800_15 (6)

L2100_5 (4)

L900_5 (3)

• VoLTE layering is LTE1127 Service based mobility trigger to

specify VoLTE Layers

• The objective of this scenario is to maintain Non GBR user

throughput when VoLTE is introduced to existing networks

• High number of VoIP UEs in the cell degrades total cell

throughput and limits throughput for other services due to

lower priority resources for non-GBR traffic are limited

1

st

_GBR

2

nd

_GBR

Non GBR

actInterFreqServiceBasedHo = 1

freqLayListServiceBasedHo ( create at

MOPR & MODPR) = EARFCN L900 & L2100

(26)

UTRAN

_–

LTE Layering Guideline (U21/U9

_–

L18/L21/L9)

EcNo: -12 dB RSCP: -105 dBm

Idle Mode

Cell PCH/URA PCH

Cell FACH

Cell DCH

ECM IDLE

ECM CONNECTED

QRxlevMin : -124 dBm (-124) QqualMin : -18 (-18) QrxlevMin : -115 dBm (-58) Abs Priority L1800 (6) > L2100 (4) > L900 (3) Abs Priority

(2)

RSRP : -108 dBm A d j L Q r x l e v m i n E U T R A : - 1 2 4 d B m ( 6 - 2 ) A d j L T h r e s h i g h : 1 6 d B ( 8 ) RSRP : -116 dBm q r x l e v m i n : - 1 2 4 d B m ( 1 - 2 4 ) t h r e s h S r v L o w : 8 d B ( 8 ) q Q u a l M i n U t r a : - 1 8 d B ( 1 - 8 ) q R x L e v M i n U t r a : - 1 0 1 d B m ( 1 - 0 1 ) EcNo: -18 dB RSCP: -101 dBm S m a r t L T E L a y e r i n g E n a b l e d : ( 4 ) o r ( 8 ) T 1 : R R C s t a t e c h a n g e C e l l_ D C H t o C C H S m a r t L T E L a y e r i n g E n a b l e d : ( 4 ) o r ( 8 ) T 2 : H S D P A / H S P A t o D C H / D C H C T S T 3 : C S R A B r e l e a s e S m a r t L T E L a y e r i n g E n a b l e d : ( 8 ) T 4 : P e r i o d i c t r i g g e r A d j L M i n R S R P L e v e l 1 - 0 8 d B m ( 5 - 4 ) A d j L M i n R S R Q L e v e l 1 : - 2 d B ( 2 - 4 ) RSRP : -108 dBm A d j L Q r x l e v m i n E U T R A : - 1 2 4 d B m ( 6 - 2 ) A d j L T h r e s h i g h : 1 6 d B ( 8 ) RSRP -108 dBm RSRQ: -12dB L T E H a n d o v e r E n a b l e d : D i s a b l e d ( 0 ) C e l l S e l e c t i o n R e - d i r e c t i o n ( B l i n d ) R e - d i r e c t i o n ( B l i n d ) R e - d i r e c t i o n ( M e a s ) U E C o n t e x t R e - d i r e c t i o n ( B l i n d ) RSRP : -116 dBm T h r e s h o l d 4 : - 1 1 6 d B m ( 2 4 ) h y s T h r e s h o l d 4 : 0 d B ( 0 ) C e l l S e l e c t i o n C e l l S e l e c t i o n P S H O P S H O C S F B v i a R e - d i r e c t i o n ( B l i n d ) b 1 T h r e s h o l d C S F B U t r a R s c p : - 1 0 5 d B m ( 1 0 ) b 1 T h r e s h o l d C S F B U t r a E c n 0 : - 1 2 d B ( 2 4 ) SmartLTELayeringRSCP: -95 dBm Meas RSRP -112 dBm B2 Reporting RSRP : -115 dBm EcNo: -12 dB RSCP: -105 dBm t h r e s h o l d 2 W c d m a : - 1 1 2 d B m ( 2 8 ) h y s T h r e s h o l d 2 W c d m a : 0 d B ( 0 ) b 2 T h r e s h o l d 1 U t r a : - 1 1 5 d B m ( 2 5 ) b 2 T h r e s h o l d 2 U t r a E c n 0 : - 1 2 d B ( 2 4 ) b 2 T h r e s h o l d 2 U t r a R s c p : - 1 0 5 d B m ( 1 0 ) C S F B v i a P S H O

(27)

Intra LTE Neighboring Strategy

L2100_5

L1800_15

L900_5

L2100_5

L1800_15

L900_5

• All LTE cells create neighbor

toward intra frequency and

inter frequency for all carrier

• ANR to Intra/inter frequency

LTE feature is appled for

neighbor creation.

(28)

UTRAN - LTE Neighboring Strategy

L1800_15

L2300_20 & 10

L2100_5

U2100_F2

U900_F3

U2100_F1

• All LTE cells create neighbor toward all UTRAN carrier (U2100

F1, U2100 F2 and U900) on LNADJW and LNRELW. Create

maximum 32 Neighbor each UTRAN carrier.

• create HO identifier for each UTRAN Carrier (U2100 F1,

U2100 F2 and U900) on LNHOW

• ANR to UTRAN feature recommend to be apply for neighbor

creation.

• All UTRAN cells create neighbor toward all LTE carrier (L2300,

L1800 L2100 & L900) on ADJL and ADJE. Create maximum 32

Neighbor each LTE carrier

• create HO identifier for each LTE Carrier (L2300, L1800 L2100

& L900) on HOPL

(29)

(30)

0 5000 10000 15000 20000 25000 30000 35000 40000 45000

AVG USER THROUGHPUT VS AVG DL PRB UTILISATION TDD 20 MHZ T ot al L og . ( To t al) 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 2-4 4-6 6-8 8-10 10-12 12-14 14-16 16-18 18-20 20-22 22-24 24-26 26-28 28-30 30-32 32-34 34-36 36-38 38-40 40-42 42-44