How to Deploy MOCN for T Project

How to deploy MOCN for T How to deploy MOCN for T How to deploy MOCN for T How to deploy MOCN for T

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HUAWEI TECHNOLOGIES CO., LTD.

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� Performance Risk in RAN SharingPerformance Risk in RAN SharingPerformance Risk in RAN SharingPerformance Risk in RAN Sharing---->MOCN Process>MOCN Process>MOCN Process>MOCN Process

� Intra-frequency interference issue of 99,00 boundary

� Load balance of 00 commercial strategy

� Risk in Swap Process

� KPI Monitor in MOCN

HISILICON SEMICONDUCTORHUAWEI TECHNOLOGIES CO., LTD. Page 2

� KPI Monitor in MOCN

Page 2

MOCN ArchitectureMOCN ArchitectureMOCN ArchitectureMOCN Architecture

MSC SGSN

TMV CN

52099

Iu interface

。。。。。。。。。。。。MSC SGSN

RMV CN

52000SGSNMSC

Common PLMN XXXX


99+0099+0099+0099+0099+0099+0099+0099+00

RNC

NodeB

Iub interface

。。。。。。。。。。。。Shared RAN

� The shared RAN is connected to multi-operators’

core network;

� In MOCN, frequency and baseband resources are shared;

� Each operator can deploy Iu-flex independently;

00000000000000000000000000000000

0000000000000000f1

f2

MOCN cell

Dedicated cell

Configuration DiscussionConfiguration DiscussionConfiguration DiscussionConfiguration Discussion

GSM 99

3G F1

3G F2

99+0099+0099+0099+00 00

0000F2’

00 00

00

BMALAC


1, F1/F2 configure in the same LAC; different LAC with GSM

2, Neihboring configuration between F1/F2/GSM3, ePLMN configure for 52000 user only. Configure in GSM 99/ 3G 00 core network.

�There are not roaming relationship

between 3G of 99 and 00;

Mobility of Mobility of Mobility of Mobility of 99999999’s user’s user’s user’s user

GSM 99

3G F1

3G F2

99+0099+0099+0099+00 00

0000F2’

00 00

00

BMA

X

X

Handover

Cell Reselection

A B


99

3G<->3G From F1 to F2, not allowed;F2 reject 99 user by PLMN(PLMN not allowed)

From Cell A to B, not allowed, 99 user drop to GSM;Cell B reject 99 user by PLMN(PLMN not allowed)

3G ->2G Coverage based inter PLMN inter-RAT handover;

2G<->3G Cell reselect back to F1(No ePLMN, will not select F2);

HPLMN reselect;

00

intraintraintraintra----frequency interferencefrequency interferencefrequency interferencefrequency interference

99+0099+0099+0099+00

0099999999++++00000000

0000

0000

0099+0099+0099+0099+00

0099999999++++00000000

99 user

Issue：：：：When 99 user in BMA boundary move outside BMA

area, it can only hand over to GSM 99, due to BMA outside F1/00 can not support the handover.

The RTWP of outside F1/00 cell may rise, the RTWP

of F1/99+00 cell may rise little.

Impact Impact Impact Impact

ObjectObjectObjectObject

ImpactImpactImpactImpact ReasonReasonReasonReason

boundary

F1/99 user

Accessibility Ratio

maybe worse

1)When UE access the side to outside

can not do soft handover , Accessibility

Ratio decrease

2)Due to RTWP rise of F1/99+00

F1

F2

F1

F2

00user

HISILICON SEMICONDUCTORHUAWEI TECHNOLOGIES CO., LTD. Page 6Page 6

0099+0099+0099+0099+00

0000

0099+0099+0099+0099+00

BMABMA

boundary

GSM 99


Call Drop Rate

maybe worse

1)More Inter-RAT handover may cause

CDR worse


Inter-RAT

handover time

increase

If the GSM capacity is not

enough ,more use rs handover to GSM

may cause GSM congestion will cause

handover success ratio decrease

outside

F1/00 user

Accessibility Ratio

maybe worse

Due to RTWP rise of F1/00

Call Drop Rate

maybe worse

Due to RTWP rise of F1/00

F1

F2

outside

intraintraintraintra----frequency interference analysis(1)frequency interference analysis(1)frequency interference analysis(1)frequency interference analysis(1)

99999999++++0000000000 B

OutsideBoundary

GSM 99

Couple Loss1 Couple Loss2

To simply the model , Couple Loss is defined as the loss

between the Base TX and UE, including the antenna

gain and path loss

99


Analysis：2D trigger at -100dBm，CPICH is 33dBm，the couple loss is 133dBFrom the link budget, in some scenarios, 99 user will cause the RTWP rise of outside F1/00 B cell. This is relevant with service and UE position.

Solution：99 user should be able to handover to GSM asap.00 user should keep intra-frequency handover.

intraintraintraintra----frequency interference analysis(2)frequency interference analysis(2)frequency interference analysis(2)frequency interference analysis(2)

99+0099+0099+0099+00 00 B

OutsideBoundary

GSM 99


00


1A threshold is 3dBAssume RTWP of outside F1/00 is -98dBm,before 1A event triggered, the interference to F1/99+00 is calculated above.

This kind of interference is temporary for after 1A triggered, F1/99+00 can control the UE TX power.

Solution1Solution1Solution1Solution1Impact ObjectImpact ObjectImpact ObjectImpact Object ImpactImpactImpactImpact EffectEffectEffectEffect

boundary

F1/99 user

Accessibility Ratio

maybe worse

N/A

Call Drop Rate

maybe worse

N/A

Inter-RAT handover

time increase

N/A

boundary

F1/99 user

Accessibility Ratio

maybe worse

Improved

Call Drop Rate

maybe worse

Improved

Reason

BMA 99+00 99+00 capacity loss Block boundary

F1/99+00 cell

0099+0099+0099+0099+00

0099+0099+0099+0099+00

99+0099+0099+0099+00

0000

00

0099+0099+0099+0099+00

0099+0099+0099+0099+00

99+0099+0099+0099+00

99 user

F1

F2

F1

F2

F1

00user

0000


GSM 99

Solution: Block boundary F1/99+00 cell as buffer zone

Impact：：：：Buffer Zone is simple to deploy，，，，but there is some capacity loss.

F1/99+00 cell

Boundary 00 Bearing more

capacity

Block boundary

F1/99+00 cell00

99+0099+0099+0099+000000

0099+0099+0099+0099+00

BMABMA

boundary

F1

F2

outside

99+0099+0099+0099+00 Blocked for Buffer Zone

Solution Solution Solution Solution 2222

99

UE TX(dBm)

20

Handover

areaCell A Cell B

2D trigger

99+0099+0099+0099+00 00 B

OutsideBoundary


Handover area

00

99


00

distance

-20

When 00 user leave Cell A to Cell B, 00 user UE TX power is less after handover to Cell B

When 99 user leave Cell A to Cell B , the UE TX power increased until the RSCP or Ec/No 2D event trigger coverage handover to GSM

The UE TX power of two users is depicted in the figure.

GSM 99

Solution 2Solution 2Solution 2Solution 2

99

UE TX(dBm)

UE Tx power limited

trigger

20

Handover

areaCell A Cell B

2D triggerImpact ObjectImpact ObjectImpact ObjectImpact Object ImpactImpactImpactImpact EffectEffectEffectEffect

boundary

F1/99 user

Accessibility Ratio

maybe worse

some improved

Call Drop Rate

maybe worse

some improved


00

distance

trigger threshold

-20

Inter-RAT handover

times may increase

Times increase

boundary

F1/99 user

Accessibility Ratio

maybe worse

Improved

Call Drop Rate

maybe worse

Improved

Reason

boundary

F1/00 user

Inter-RAT handover

times may increase

UE Tx power limited

trigger threshold

too small

Call Drop Rate

maybe worse

Solution:

Switch on the handover based on UE TX power to make F1/99 user more early handover to GSM

Impact:If the UE Tx power limited trigger threshold set too

high, the effect is not obvious.If the UE Tx power limited trigger threshold set too

lower,F1/00 user may trigger handover to GSM

Solution 2(The Rule of setting threshold)Solution 2(The Rule of setting threshold)Solution 2(The Rule of setting threshold)Solution 2(The Rule of setting threshold)

99

UE TX(dBm)

20

Handover

areaCell A Cell B

2D trigger

The rule of setting UE Tx Power

limited trigger threshold.

When 00 user leave Cell A to

Cell B, we choose the maximal 00 UE Tx power as the threshold.


99

00

distance

UE Tx power limited

trigger threshold

-20

2D trigger

The maximal 00 UE Tx power

00 UE Tx power as the threshold.

So 00 user will soft handover to

Cell B.

Otherwise 99 user will trigger handover to 2G.

Solution 3Solution 3Solution 3Solution 3（（（（Modified in ProductModified in ProductModified in ProductModified in Product）））） Impact ObjectImpact ObjectImpact ObjectImpact Object ImpactImpactImpactImpact EffectEffectEffectEffect

boundary

F1/99 user

Accessibility Ratio

maybe worse

Improved

Call Drop Rate

maybe worse

Some improved

Inter-RAT handover

time increase

Not improved

boundary

F1/99 user

Accessibility Ratio

maybe worse

Improved

Call Drop Rate

maybe worse

Improved

99+0099+0099+0099+0000 B

OutsideBoundary

GSM 99


99


Solution:

When 99 user move to F1/00 B cell, firstly active set is added, then trigger Inter-RAT handover process. Due to this mechanism, the UE TX Power of 99 user can be controlled by F1/00 B cell. So

the Uplink interference can be eliminated some.Impact:

Some Product code should be modified. Some resource of F1/00 B cell is used.

00 Commercial dual carriers strategy00 Commercial dual carriers strategy00 Commercial dual carriers strategy00 Commercial dual carriers strategy

After 00 Commercial launched,

Two strategy can be used

1.Free camping / Load balancing strategy

2.Preferred camping/Service steering strategy


Free camping / Load balancing strategyFree camping / Load balancing strategyFree camping / Load balancing strategyFree camping / Load balancing strategy

3G F1

3G F2

99+0099+0099+0099+00 00

0000 F2’

00 00

00

BMA Cell Reselection

A B


0000

Idle 00 can choose better Ec/Io cell to camp on

Access 00 user start services where the carrier camp on

MOD UCELLSELRESEL: CellId=<CELLID>, QualMeas=CPICH_ECNO, QrxlevminExtSup=FALSE,

IdleSintrasearch=127, IdleSintersearch=127, NonhcsInd=NOT_CONFIGURED;

Real Network Application(Real Network Application(Real Network Application(Real Network Application(Canada Bell free camping strategy analysisCanada Bell free camping strategy analysisCanada Bell free camping strategy analysisCanada Bell free camping strategy analysis))))


HSDPAHSDPAHSDPAHSDPA user numberuser numberuser numberuser numberRRC requestRRC requestRRC requestRRC request timestimestimestimes AMR AMR AMR AMR ErlangErlangErlangErlang

InInInIn the 24 hours, RRC request times and traffic of three carriers is almost the same.the 24 hours, RRC request times and traffic of three carriers is almost the same.the 24 hours, RRC request times and traffic of three carriers is almost the same.the 24 hours, RRC request times and traffic of three carriers is almost the same.

So free camping strategy is fit for load balance.So free camping strategy is fit for load balance.So free camping strategy is fit for load balance.So free camping strategy is fit for load balance.

Preferred camping/Service steering strategy Preferred camping/Service steering strategy Preferred camping/Service steering strategy Preferred camping/Service steering strategy

3G F1

3G F2

99+0099+0099+0099+00 00

0000 F2’

00 00

00

BMA Cell Reselection

A BService Steering DRD


0000

PriorityServiceFor R99RT R99NRT HSDPA HSUPAF1 1 1 2 2F2 1 1 1 1

Idle 00 prefer to camp on F1

Access 00 user start R99 services where the carrier camp on

00 user start H services DRD to F2/cell based on service steering

Mobility of 00’s user Mobility of 00’s user Mobility of 00’s user Mobility of 00’s user

GSM 99

3G F1

3G F2

99+0099+0099+0099+00 00

0000F2’

00 00

00

BMA

Handover

Cell Reselection

A B


00

3G->2G Coverage based inter PLMN inter-RAT handover; （PS service reselect to GSM）2G<->3G Cell reselect back to F1/F2; (PS service can’tPS service can’tPS service can’tPS service can’t reselect to 3Greselect to 3Greselect to 3Greselect to 3G)

3G<->3G Handover between F1/F2 and Cell A/B

Strategy Comparison Strategy Comparison Strategy Comparison Strategy Comparison Free camping / Load balancing strategy

Preferred camping/Service steering strategy

F1/99+0099 User R99+H00 User R99+H

99 User R99+H00 User R99

F2/00 00 User R99+H 00 User H

Free camping / Load balancing strategyPreferred camping/Service steering strategy

If 00 user is too many,F2/00 can absorb If 00 user is too many,F2/00 can not


99 UserIf 00 user is too many,F2/00 can absorb more 00 User.99 User will not affected.

If 00 user is too many,F2/00 can not bear the R99 user of F2/00.The F1/99+00 may congestion.

00 User

If 99 User is too many, the load of F1/99+00 is heavier. The EcIo of F1/00+99 is worse, The 00 user can reselect to F2/00to offload the traffic.

If 99 User is too many,00 user can not offload to F2/00 this may cause KPI worse.

Free camping strategy is good for load balancing.Free camping strategy is good for load balancing.Free camping strategy is good for load balancing.Free camping strategy is good for load balancing.

Preferred camping may cause traffic unbalanced which cause KPI degradation.Preferred camping may cause traffic unbalanced which cause KPI degradation.Preferred camping may cause traffic unbalanced which cause KPI degradation.Preferred camping may cause traffic unbalanced which cause KPI degradation.

How to get the target networkHow to get the target networkHow to get the target networkHow to get the target network

New CN pool for RMV

RMV(PLMN2) TMV(PLMN1)

RNC

PBI RNCPBI RNCPBI RNCPBI RNC

RMV(PLMN2)’

Test bed CN for RMVLiving CN for TMV

MTG RNCMTG RNCMTG RNCMTG RNC

Core


RNC1 RNCn

PBI RNCPBI RNCPBI RNCPBI RNC MTG RNCMTG RNCMTG RNCMTG RNC

PLMN1

PLMN2

RNC1 RNCn

UPC

PLMN2

PLMN2

BMA

F1

F2

•New RNC•Rehoming

•New NodeB

RAN Sharing

How to get the target networkHow to get the target networkHow to get the target networkHow to get the target network

New CN pool for RMV

RMV(PLMN2) TMV(PLMN1)

RNC

PBI RNCPBI RNCPBI RNCPBI RNC

RMV(PLMN2)’

Living CN for TMV Test bed CN for RMV

MTG RNCMTG RNCMTG RNCMTG RNC

C o r eC o r eC o r eC o r e


RNC1 RNCn

PBI RNCPBI RNCPBI RNCPBI RNC MTG RNCMTG RNCMTG RNCMTG RNC

PLMN1

PLMN2

RNC1 RNCn

BMAUPC

PLMN2

PLMN2

RAN Sharing

F1

F2

PLMN2+PLMN1

MOCN

• New CN pool• Rehoming RNC

• Change to MOCN

1.Inter-PLMN 3G to 2G handover has been used in many other projects.

2.Except the intra-frequency interference issue, there is no special risk in swap process.

Risk in Swap ProcessRisk in Swap ProcessRisk in Swap ProcessRisk in Swap Process


KPI MonitorKPI MonitorKPI MonitorKPI Monitor

Item KPI Reference

RTWP VS.MeanRTWP

TCP VS.MeanTCP.NonHS

CS CDRCS Service Drop Ratio (Cell)

PS CDRPS Call Drop Ratio (Cell)

RRC Setup Success Ratio (Cell.Service)


RRC RRC Setup Success Ratio (Cell.Service)RRC Setup Success Ratio (Cell.Other)

Inter-RATCS W2G Inter-RAT Handover Out Success Ratio (Cell)PS W2G Inter-RAT Handover Out Success Ratio (Cell)

Except regular KPI monitor, RTWP RRC CDR Inter-RAT success ratio should be monitored carefully.

MOCN KPI monitorMOCN KPI monitorMOCN KPI monitorMOCN KPI monitorID Counter Description

67193097 VS.IU.MOCN.CsPsCoordination Number of Redirection Requests from CN (CS/PS Coordination Required)

67193098 VS.IU.MOCN.LocAreaNotAllowed Number of Redirection Requests from CN (Location Area Not Allowed)67193099 VS.IU.MOCN.PlmnNotAllowed Number of Redirection Requests from CN (PLMN Not Allowed)67193100 VS.IU.MOCN.RoamNotAllowed Number of Redirection Requests from CN (Roaming Not Allowed in this Location Area)67193101 VS.IU.MOCN.NoSuitableCell Number of Redirection Requests from CN (No Suitable Cell in Location Area)67193102 VS.IU.MOCN.GprsServicesNotAllowed Number of Redirection Requests from CN (GPRS Services Not Allowed in this PLMN)67196193 VS.RAB.NormRel.AMR.PLMN.RNC Number of Normally Released AMR CS RABs for Operator67196195 VS.RAB.NormRel.CS64.PLMN.RNC Number of Normally Released 64kbit/s CS Conversational Service RABs for

Operator67196197 VS.RAB.NormRel.PS.PLMN.RNC Number of Normally Released PS RABs for Operator67196192 VS.RAB.AbnormRel.AMR.PLMN.RNC Number of Abnormally Released AMR CS RABs for Operator

67196194 VS.RAB.AbnormRel.CS64.PLMN.RNC Number of Abnormally Released 64kbit/s CS Conversational Service RABsfor Operator67196196 VS.RAB.AbnormRel.PS.PLMN.RNC Number of Abnormally Released PS RABs for Operator

67196186 VS.RAB.AttEstab.AMR.PLMN.RNC Number of AMR CS RABs Establishment Requests for Operator67196188 VS.RAB.AttEstab.CS64.PLMN.RNC Number of 64kbit/s CS Conversational Service RABs Establishment

Requests for Operator67196190 VS.RAB.AttEstab.PS.PLMN.RNC Number of PS RABs Establishment Requests for Operator

Redirection

Retainability

Accessibility


67196190 VS.RAB.AttEstab.PS.PLMN.RNC Number of PS RABs Establishment Requests for Operator67196187 VS.RAB.SuccEstab.AMR.PLMN.RNC Number of AMR CS RABs Successfully Established for Operator(WB+NB)67196189 VS.RAB.SuccEstab.CS64.PLMN.RNC Number of 64kbit/s CS Conversational Service RABs Successfully67196191 VS.RAB.SuccEstab.PS.PLMN.RNC Number of PS RABs Successfully Established for Operator67193016 VS.HSDPAPSLoad.MaxDLThruput.PLMN.RN Maximum Downlink PS HSDPA Traffic for RNC per Operator67204836 VS.VP.Erlang.Equiv.PLMN.RNC Equivalent Erlang of 64kbit/s CS Service for RNC per Operator67193010 VS.R99PSLoad.MaxULThruput.PLMN.RNC Maximum Uplink PS R99 Traffic for RNC per Operator67193022 VS.MBMSPSLoad.MaxDLThruput.PLMN.RNC Maximum Downlink PS MBMS Traffic for RNC per Operator67204149 VS.MBMSPSLoad.DLThruput.PLMN.RNC Downlink PS MBMS Traffic for RNC per Operator67193019 VS.HSUPAPSLoad.MaxULThruput.PLMN.RN Maximum Uplink PS HSUPA Traffic for RNC per Operator67204835 VS.AMR.Erlang.Equiv.PLMN.RNC Equivalent Erlang of CS AMR Service for RNC per Operator67204146 VS.R99PSLoad.DLThruput.PLMN.RNC Downlink PS R99 Traffic for RNC per Operator67204147 VS.HSDPAPSLoad.DLThruput.PLMN.RNC Downlink PS HSDPA Traffic for RNC per Operator67203962 VS.CSLoad.Erlang.Equiv.PLMN.RNC Equivalent CS Erlang for RNC per Operator67193013 VS.R99PSLoad.MaxDLThruput.PLMN.RNC Maximum Downlink PS R99 Traffic for RNC per Operator67192511 VS.CSLoad.MaxErlang.Equiv.PLMN.RNC Maximum equivalent CS Erlang for RNC per Operator67204145 VS.R99PSLoad.ULThruput.PLMN.RNC Uplink PS R99 Traffic for RNC per Operator67204148 VS.HSUPAPSLoad.ULThruput.PLMN.RNC Uplink PS HSUPA Traffic for RNC per Operator73440109 VS.PS.CellFachUEs.PLMN Number of Cell_FACH UEs in PS Domain for RNC per Operator73410502 VS.PSLoad.Thruput.PLMN.RNC Average Total Throughput of UL and DL PS Services per Operator for RNC67204840 VS.PS.CellDchUEs.PLMN Number of Cell_DCH UEs in PS Domain for RNC per Operator73394023 VS.PSLoad.MaxThruput.PLMN.RNC Maximum Total Throughout of UL and DL PS Services per Operator for RNC

Accessibility

Traffic

Documents

How to Deploy MOCN for T Project