Viettel 2nd Carrier Deployment
Transcript of Viettel 2nd Carrier Deployment
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2nd Carrier Deployment / RDPrado / 9/24/20091 Nokia Siemens Networks
2ND
CARRIER DEPLOYMENT
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2nd Carrier Deployment / RDPrado / 9/24/20092 Nokia Siemens Networks
Viettel - 2nd Carrier Deployment
INTRODUCTION: This presentation is focused on the 2nd Carrier Deployment
strategy for Viettel. It shows the planning details on how to implement 2nd Carrierin the network.
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Why do we implement a 2ndcarrier in thenetwork?
In our current service trends in Mobile communication wehave now offered both Data and Voice to customers thru 3G.This includes deployment of HSDPA and HSUPA in variousnetworks globally.
Due to increase voice and data traffic we must make sure thatthe network can handle this increase which affects the qualityand customer perception of our network.
With these reasons, we must now implement a strategy whichcan give better capacity and quality to our subscribers.
This is done thru 2nd Carrier Deployment in clusters for ourViettel network.
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Why do we implement a 2ndcarrier in thenetwork?
Viettel has 2 carriers available for the deployment in our 3Gnetwork.
F1 is 10663 and F2 10638
Currently in a configuration of 1+1+1 we use F1 In this document we propose to use in 2+2+2 both F1 and F2in cluster deployment strategy.
Cluster deployment is a better strategy than a per site basis.Since the neighbour planning and parameter is simplified. Alsothe response of the RF carrier is controlled with a clusterapproach.
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Deployment Strategy Cluster deployment of 2nd Carrier
Strategy: A continuous layer of R99 for F1 and HSDPA + R99 for F2.
The following parameter DirectedRRCforHSDPAEnabledis implemented.
HSDPA users are moved to F2 using DRRC connection setup.
Viettel - 2nd Carrier Deployment
1st carrier R99
2nd carrier HSDPA +R99F2 F2 F2
F1 F1 F1
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Directed RRC (DRRC)
Directed RRC Connection Setup(DRRC setup) is a general feature in the RAN.
DirectedRRCEnabled -is used for load balancing between within the same NodeB.
DirectedRRCforHSDPAEnabled is used to transfer UE based on their servicecapability. If they are capable of R99 only or HSDPA.
0 not enabled1 enabled
DirectedRRCForHSDPAEnabled
0 not enabled
1 enabled
DirectedRRCEnabledRU10
ValuesParameterSystem Release
NOTE: DirectedRRCEnabledand DirectedRRCForHSDPAEnabledparameters can only be enabledtogether if DirectedRRCForHSDPALayerEnhancis also enabled
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Directed RRC (DRRC)
Parameters that need to be identical for cells belonging to same sector:
Mobile Network CodeMobile Network CodeMobile Network CodeMobile Network Code ----MNCMNCMNCMNC
Mobile Country CodeMobile Country CodeMobile Country CodeMobile Country Code ---- MCCMCCMCCMCC
PLMN identity (MCC, MNC)PLMN identity (MCC, MNC)PLMN identity (MCC, MNC)PLMN identity (MCC, MNC)
CPICHtoRefRABOffsetCPICHtoRefRABOffsetCPICHtoRefRABOffsetCPICHtoRefRABOffset
PtxPrimaryCPICHPtxPrimaryCPICHPtxPrimaryCPICHPtxPrimaryCPICH
SectorIDSectorIDSectorIDSectorID
RU10RU10RU10RU10
F1 F2
Cell 1
Cell 2Cell 3
Cell 4
Cell 5
Cell 6
SectorId 3SectorId 2
SectorId 1
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Directed RRC (DRRC)
Directed RRC connection Setup feature transfer UEs between layersbased on UE capability, establishment cause and services
F2, cell 4
HSDPA Enabled
F1, cell 1HSDPA Disabled
Rel5 or Rel 6 UEs
Rel4 or R99 UEs
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Neighbor Planning
We treat F1 and F2 as separate layers for neighbour planning
Create F1 and F2 ADJS including 1st&2nd tier neighbour of cluster sites (two way)
Create F1 ADJG for 1st
and 2nd
tier neighbour of cluster sites (two way) Create F2 ADJI for 1st and 2nd tier on the boarder sites of the cluster (two way)
GSM
F1
F2
Viettel - 2nd Carrier Deployment
F1 F1
Cluster A
ADJS
ADJS
ADJI ADJI
ADJG
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FMCI Parameters
These parameters allow specific inter-frequency handover triggeringmechanisms to be enabled or disabled. They also define the triggering
thresholds for the uplink and downlink transmit power triggeringmechanisms.
In addition, there are parameters which characterize the inter-frequencymeasurement reporting while in compressed mode, and the minimuminterval between successful and unsuccessful inter-frequency handover
attempts.
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FMCI Parameters
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HOPI Parameters
These include cell reselection & HCS parameters.
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Parameter Definitions (in summary):
Define FMCI & HOPI parameters in the RNC
Create new WCEL
CellID Defined by Viettel
Scrambling code/LAC/RAC Defined by Viettel
UARFCN F1 : 10663 and F2: 10638
LcrId - 4, 5, 6
Create cells in the MSS
Ensure similar settings are defined for both F1 & F2 for selected parametersrelated to DRRC.
Create ADJS, ADJI & ADJG neighbor parameters
Set DirectedRRCEnabled to 0 in F1 and F2
Set DRRC for HSDPA layer Enabled to 1 in F1 and 0 in F2
Set HSDPA Enable to 0 in F1 and 1 for F2
Please note that we would be using 2 shared scheduler for this deployment andwould have to reserve 196 CEs from the CE resources available
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Viettel - 2nd Carrier Deployment
Thank You !