planning Queries

1 © Nokia Solutions and Networks 2015RA41333EN70GLA0

DL SINR measurement FDD only

Bin

0 -

10

dB S

INR

< -

8dB

Bin

1 -

8d

B>

SIN

R<

-6

dB

Bin

8 6

dB

> S

INR

< 8

dB

Bin

3 -

4d

B>

SIN

R

-2dB

Bin

2 -

6d

B >

SIN

R <

-4

dB

Bin

4 -

2d

B >

SIN

R<

0d

B

Bin

5 0

dB

> S

INR

< 2

dB

Bin

6 2

dB

>S

INR

< 4

dB

Bin

7 4

dB

> S

INR

< 6

dB

dB

Bin

9 8

dB

> S

INR

< 1

0d

B

Bin

18

26

dB >

SIN

R <

28

dB

Bin

19

2

8dB

> S

INR

M8031C0-19 for subband 1M8031C20-39 for subband 2M8031C40-59 for subband 3M8031C60-79 for subband 4M8031C80-99 for subband 5M8031C100-119 for subband 6M8031C120-139 for subband 7M8031C140-159 for subband 8M8031C160-179 for subband 9M8031C180-199 for subband 10M8031C200-219 for subband 11M8031C220-239 for subband 12M8031C240-259 for subband 13

…………Additional sets of counters;• M8031C260 to M8031C519 for

subbands 1 to 13 for codeword 2 (CW2)

• M8031C20 to M8031C539 for wideband SINR

• M8031C540 to M8031C599 for wideband SINR for CW2

These measurements are updated for each UE every TTI by using the UE's most recent subband CQI to calculate Subband X downlink SINR post-compensation and the bin is incremented every sample period (5 seconds) with the respective number of calculated values where each one is within a dB range. PRB range of subband X according to frequency:10 MHz refers to PRB#48 to PRB#4915 MHz and 20 MHz refers to PRB#64 to PRB#71

Subband 2Subband 1

…… Subband 13


DL SINR measurement FDD onlySubbands mapping

Subband PRBs for 1.4 MHz

PRBs for 3 MHz

PRBs for 5 MHz

PRBs for 10 MHz

PRBs for 15 MHz

PRBs for 20 MHz

1 N/A 0 to 3 0 to 3 0 to 5 0 to 7 0 to 72 N/A 4 to 7 4 to 7 6 to 11 8 to 15 8 to 153 N/A 8 to 11 8 to 11 12 to 17 16 to 23 16 to 234 N/A 12 to 14 12 to 15 18 to 23 24 to 31 24 to 315 N/A N/A 16 to 19 24 to 29 32 to 39 32 to 396 N/A N/A 20 to 23 30 to 35 40 to 47 40 to 477 N/A N/A 24 36 to 41 48 to 55 48 to 558 N/A N/A N/A 42 to 47 56 to 63 56 to 639 N/A N/A N/A 48 to 49 64 to 71 64 to 71

10 N/A N/A N/A N/A 72 to 74 72 to 7911 N/A N/A N/A N/A N/A 80 to 8712 N/A N/A N/A N/A N/A 88 to 9513 N/A N/A N/A N/A N/A 96 to 99


UL Power and Quality Measurements• Distribution of SIR for PRBs of PUSCH FDD only

- These measurements provide the number of in-use PUSCH Resource Blocks (PRB) having an average Signal to Interference Ratio (SIR) value X

- M8005C326..C335: UL Distribution of SIR for PRBs of PUSCH bins 0 - 9

Bin

0 S

IR <

1d

B

Bin

1 1

dB

> S

IR <

4d

B

Bin

8 2

2d

B >

SIR

25

dB

Bin

3 7

dB

>S

IR 1

0dB

Bin

2 4

dB

>S

IR <

7d

B

PRB Bandwidth

Bin

4 1

0d

B >

SIR

<13

dB

Bin

5 1

3d

B >

SIR

< 1

6d

B

Bin

6 1

6d

B >

SIR

< 1

9d

B

Bin

7 1

9d

B >

SIR

< 2

2d

B

dB

Bin

9 2

5d

B >

SIR


NAS Service Request (Negative)

UE eNB MME SGW PGW HSS

InitialContextSetupRequest

RRCConnectionReconfiguration

RRCConnectionReconfigurationComplete

M8007C2

Data bearer setup failure

TS1Relocexec/Tx2Relocexecexpires

Setup DRB


• F is a comparison between the overload in the CRE of the small cell partners and load in the eICICI area.

• F is inversely proportional to eicicAbsAdaptationBeta

• If F> eIcicAbsAdaptationThreshold0To1 ABS is enabled (MP0 means no ABS)

LTE1113 /LTE1496 EicicStep 4: Dynamic - ABS adaption

Time between ABS adaption periods= multLoadMeasRrmEicic x tLoadMeasX2Eicic

Every adaption period F is evalutedIf F > eIcicAbdAdaptionThreshold0to1 then ABS is enabledIf F < eIcicAbsAdaptationThreshold1to0 ABS is disabled

eicicAbsAdaptationBetaABS adaptation beta LNCEL; 1..10; 2

eIcicAbdAdaptionThreshold0to1Threshold to switch from MP0 to MP1 LNCEL; 0.1...0.9 ms; 0.5

eIcicAbdAdaptionThreshold1to0Threshold to switch from MP1 to MP0 LNCEL; 0.1...0.9 ms; 0.03


• MP pattern can be increased or decreased

LTE1113 /LTE1496 EicicStep4: Dynamic - ABS adaption

F continues to be evaluated every period.If

f > r(MPi) + eIcicAbsDeltaAdjustment * ( r(MPi+1) - r(MPi) ) and

CACM > 100 * ( r(MPi+1) - r(MPi) ).Muting pattern is increased by 1 or

f < r(MPi) - eIcicAbsDeltaAdjustment * ( r(MPi) - r(MPi-1) ). Muting pattern is decreased by 1

eIcicAbsDeltaAdjustmentABS delta adjustment LNCEL; 0...2; 0.6

MP0 MP1 MP2 MP3 MP4 MP5

1. MP0 to MP1 transition 2. MP increase except MP0 to MP1 transition

3. MP decrease except switching to MP04. MP1 to MP0 transition

5. MP is not changedeICIC disabled At MP0


LTE1113 /LTE1496 eICIC Step4: Dynamic - ABS adaption

eNBeNB

Load Information >Cell Information Item>>Cell ID: Cell ID ECGI of Mcell>>UL High Interference Information>>>Target Cell ID; ECGI of the sCel>>>UL High Interference Indication; provided prb bitmap>>ABS Information; provided>>Invoke Indication; ABS information

ABS pattern info (40 bit bitmap of SF) , Ant ports

If new MP has lower ratio than previously used start timer

New MP ratio

eIcicAbsPatChangeDelayT

eIcicAbsPatChangeDelayTDelay timer for applying a new ABS pattern LNCEL; 0...100 ms; 40ms

https://www.google.co.uk/imgres?imgurl&imgrefurl=http://www.clipartpanda.com/categories/timer-20clipart&h=0&w=0&tbnid=BrBv7MjAHMG8XM&zoom=1&tbnh=246&tbnw=205&docid=JPuLj3DNA2_d1M&hl=en&tbm=isch&ei=21x4VJVbyMI88v2BwAU&ved=0CAQQsCUoAA


PDCCH Scheduling

• PDCCH carries DCI (Downlink Control Information) to inform UE• about UL and DL Resource Block allocation for user data transmission

- After UL and DL scheduling list was generated by UL and DL scheduler,this algorithm selects UEs for UL and DL physical resource block allocation

- Share between UL and DL can be set with parameter LNCEL: pdcchUlDlBal

- ZIG-ZAG is not used anymore (trial approach)• only if entries have same priority level

- UE specific search space can be limited by LNCEL: PDCCHAlpha• [0,5 .. 2], step 0,05, default = 0,8 (PDCCH UE search space capacity is multiplied with this parameter)

pdcchUlDlBalPDCCH allocation balance constant between UL and DL. The PDCCH UE-specific search space capacity is divided into UL and DL based on the parameter before dynamic schedulings

LNCEL; 0…0.9; 0.05; 0.5


Cell resource groups

• Admission Control thresholds are divided between CRGs according to plmnGroupShare

– configuration of Admission Control is still based on the existing LNCEL parameters (maxNumActUe, maxNumActDrb, maxGbrTrafficLimit

maxNumRrc is not subject to split according to CRG feature as UE PLMN Id is not known at this stage

– allocation of AC capacity for particular CRG is done based on the share defined by plmnGroupShare parameter

Example;

LNCEL:maxNumActUe × plmnGroupShareCRG1

maximum number of Emergency Sessions is also shared (addEmergencySessions × plmnGroupShareCRG1)

Impact on Admission Control

Operator 1 (CRG1)maxNumActUe = 120maxNumActDrb = 240maxGbrTrafficLimit = 30

Operator 2 (CRG2)maxNumActUe = 180maxNumActDrb = 360maxGbrTrafficLimit = 45

Default values of AC:maxNumRrc = 300

maxNumActUe = 300maxNumActDrb = 600

maxGbrTrafficLimit = 75

Resource split:plmnGroupShare1 = 40%plmnGroupShare2 = 60%

Common for both CRGs maxNumRrc = 300


LTE1047: C-Plane Overload handling

eNB continues to monitor the load:

• KPIs are on target• ENB internal message queues

are practically empty• Overload thresholds are not

exceeded

High load is detected

Countermeasures• Rejecting low priority RRC

Connection Requests• Rejecting low priority Handovers• Monitoring time spent in

overload level 1

Very high load is detected

Countermeasures• Rejecting low priority RRC

Connection Requests• Rejecting most of Handovers• Monitoring time spent in

overload level 2

LTE1047 C-Plane Overload Handling

“Normal state”Overload level 0

“Overload state”Overload level 1

“Overload state”Overload level 2

actCplaneOvlHandling Activation of C-plane overload handlingLNBTS; 0 (false), 1 (true); 0

actInHORed Activate incoming HO reductionLNBTS; 0 (false), 1 (true); 1

actRrcConnRed Activate RRC connection reductionLNBTS; 0 (false), 1 (true); 1


LTE1406: Extended VoLTE talk timeEnter and leave conditions

QCI1 establish

ed

UE DL Throughput <

qci1ThroughputFactorDl × GBR DL

UE UL Throughput <

qci1ThroughputFactorUl × GBR UL

if either throughput is above the threshold, UE traffic is considered as VoIP + Data and dedicated QCI1 settings cannot be applied for the UE

N

N

Y

Y

Enter evtt, reconfig

parameters

qci1ThroughputFactorDl Multiplication factor for the QCI1 traffic in downlink LNCEL; 1..4 : 1.6

qci1ThroughputFactorUl Multiplication factor for the QCI1 traffic in uplink LNCEL; 1..4 : 1.6


Support of high speed users

• If prachHsFlag = true the following rootSeqIndex values can be selected depending on prachCS (restricted set)

Cell range Required amount of root sequences

prachCS Possible range for rootSeqIndex

< 1.0 km 4 0 24...816

< 1.4 km 6 1 30…810

< 2.0 km 6 2 36…804

< 2.6 km 8 3 42…796

< 3.4 km 9 4 52…787

< 4.3 km 11 5 64…779

< 5.4 km 14 6 76…764

< 6.7 km 17 7 90…749

< 8.6 km 20 8 116…732

< 10.6 km 26 9 136…704

< 13.2 km 32 11 168…676

< 17.2 km 44 11 204…526

< 21.5 km 64 12 264…566

< 27.7 km 64 13 328…498

< 32.8 km 64 14 384…450

planning Queries

Education

Transcript of planning Queries