UMTS900 Deployment Strategy V1.0
description
Transcript of UMTS900 Deployment Strategy V1.0
HUAWEI TECHNOLOGIES CO., LTD.
Huawei UMTS900M Solution and Deployment Strategy
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Antenna Solution
• UMTS Refarming Application
HUAWEI TECHNOLOGIES CO., LTD. Page 3Huawei Confidential
Why Refarming? Demands from Data Growth
Data services offset the falls of voice revenue and becomes the key driver to growth
• Voice ARPU falls in 4 countries
Coverage Requirement
• No 3G service in rural area• Coverage gap between 2.1GHz and 900MHz
ServiceRequirement
• Poor or No data service in rural area(inc. fixed data access)
CapacityRequirement • 2.1GHz spectrum insufficient for 3G capacity
CostRequirement • TCO (UMTS 900MHz) << TCO (UMTS 2.1GHz)
EvolutionRequirement
• partial 900MHz frequencies spared as GSM subscribers moving to UMTS gradually
• UMTS grows as GSM turns down
HUAWEI TECHNOLOGIES CO., LTD. Page 4Huawei Confidential
Refarming Get Better Network on Lower Cost
Cell Coverage Comparison
n Radio planning U900 vs. U2100: about 6dB better link budget in U900, Cell Coverage of U900 2.5~3 times larger than U2100
n Radio planning U900 vs. G900: Link budget +6-9dB, Better receiver sensitivity
n Capacity planning: Co-site for higher capacity sharing, 50% fewer sites with U900 than U2100
HUAWEI TECHNOLOGIES CO., LTD. Page 5Huawei Confidential
Feasibility Analysis of UMTS900 RefarmingC
halle
nges
& S
olut
ion
Industry Maturity ( Product and terminal industry)
License Permission on UMTS900
SpectrumAvailability
TechnicalFeasibility
Voice Migration
Indu
stry
C
hain
• Configurable Band width of UMTS carrier
•More Valuable spectrum left to GSM retained
•frequency allocation
•GU adjacent frequency interference impact
•Inter-RAT Operation
•Migration of existing GSM traffic•TFR Solution•Evolution from2G to 3G
Deployment Strategy and RNP
CostAffordability
• co-site• co-antenna• co-cabinet• co-accessories• co-transmission
HUAWEI TECHNOLOGIES CO., LTD. Page 6Huawei Confidential
Huawei, Major Contributor to Refarming Industry
Trial
Deployment
Enhancement
Pha
se 2
• Leader in commercialization - Optus, Australia- SFR, France- VDF, Romania- Teliasonera, Finland- AIS, Thailand, etc.
• 1st Tighter Frequency Reuse• 1st Single-RAN refarming• 1st antenna sharing
• Pioneer for technical trials - Orange, France- Proximus, Belguim- Globe, Bulgaria, etc.
• 1st verify “Buffer Zone” theory• 1st test in-build U900 performance• 1st verify negligent impact to G900P
hase
1P
hase
3 • 1st to deploy G/U SDR850MHz and SDR900MHz • 1st to deploy U900 on 4.2MHz Bandwidth • 1st to deploy Tighter Frequency Reuse
HUAWEI TECHNOLOGIES CO., LTD. Page 7Huawei Confidential
Typical Deployment Strategy for Refarming
n No 3G service yet anywheren No 2.1Ghz spectrumn Sufficient 900Mhz spectrum for
network-wide refarming
n No UMTS service coverage yetn voice traffic is low, easy to
release frequencies for UMTSn Poor or No fixed broadband
n Indoor coverage is not goodn Blind spots in dense urbann Frequent handover between UMTS
2.1Ghz and GSM 900Mhz due to coverage quality difference
Extend 3G Coverage In
Sub-urban & Rural
Extend 3G Coverage In
Sub-urban & Rural
Initial 3G Roll-out In
All areas
Initial 3G Roll-out In
All areas
Improve 3G Coveragein
Urban area
Improve 3G Coveragein
Urban area
U900
U2100
HUAWEI TECHNOLOGIES CO., LTD. Page 8Huawei Confidential
• UMTS2100 for Urban coverage • UMTS900 refarming for Suburban and Rural coverage
Extend 3G Coverage in
Suburban & Rural
Extend 3G Coverage in
Suburban & Rural
Network charactern No UMTS coverage yetn low voice traffic, easy to release
frequencies for UMTSn Poor or no data service
Typical UMTS900 Deployment Scenarios
RNP Focus on n Coverage Requirementn Service Requirement n Cost Requirement
HUAWEI TECHNOLOGIES CO., LTD. Page 9Huawei Confidential
• UMTS2100 for Urban coverage • UMTS900 refarming for urban coverage and capacity
Typical UMTS900 Deployment Scenarios
Improve 3G Coveragein
Urban area
Improve 3G Coveragein
Urban areaUrban area
Network charactern Indoor coverage not goodn Blind spots in Dense Urbann Capacity supplementary for
UMTS 2.1GHz
RNP Focus on:n Coverage Requirementn Capacity Requirement
HUAWEI TECHNOLOGIES CO., LTD. Page 10Huawei Confidential
Initial 3G Roll-out in
All areas
Initial 3G Roll-out in
All areas All areas
n Network charactern No 3G service yet anywheren No 2.1GHz spectrumn Sufficient 900MHz spectrum for
network-wide refarming
n RNP Focus onn Coverage Requirementn Cost Requirement
Typical UMTS900 Deployment Scenarios
• U2100 is mainly covered in the urban and core towns• Refarming the GSM900 all over the network
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Co-Antenna Solution
• UMTS Refarming Application
HUAWEI TECHNOLOGIES CO., LTD. Page 12Huawei Confidential
Flexible Huawei UMTS Refarming Solution
n Configurable Bandwidth of UMTS carrier
ü Flexible Between 4.2MHz and 5MHz from RAN Release12.0 with 0.1MHz steps for both downlink and uplink
ü Efficiently suitable for 850,900,1700,1800 and 1900MHz frequencyü UU4.2M solution(two adjacent 4.2M UMTS carriers)is ready from SRAN releas3.0ü 3.8MHz solution can be designed for a network
according to actual conditions.
n More valuable spectrum left to GSM use
GSMGSM
guard
UMTS
HUAWEI TECHNOLOGIES CO., LTD. Page 13Huawei Confidential
Flexible Huawei UMTS Refarming Solution
n Sandwich frequency solutionü Sandwich allocation flexibly puts U900 carrier
into the proper spectrum location based on the UU solution and interference consideration with other operators.
n Edge allocation solutionü Edge allocation solution has lower frequency
utilization since the more frequency guard bandwidth shall be reserved to avoid the risk.
ü Min. frequency gap (f1): 2.2MHz separationü Min. frequency gap (f2): 2.6MHz between
UMTS900 and the GSM900 of neighbour operator
n Sandwich frequency solution is preferred
Sandwich frequency solution
Edge frequency solution
HUAWEI TECHNOLOGIES CO., LTD. Page 14Huawei Confidential
n16% less spectrum bandwidth needed for UMTS
4.2MHz for UMTS Tighter Frequency Reuse
nUp to 44% less spectrum bandwidth needed for GSM
nNo Negative Impact to GSM
Sandwich & Buffer Zone
SingleRAN/ SDR
Reuse of Legaciesn Guarantee better coveragen Maximize value of investment
n Easy to maintenance n Improve 2G/3G performance
2G Traffic Transfer Strategy n Coverage/Load/Service Intersystem Balance nReduce CS block raten Improve data throughput
Huawei Refarming Solution highlights
RefarmingSolutions
1 2
3
45
6
HUAWEI TECHNOLOGIES CO., LTD. Page 15Huawei Confidential
UMTS 900 Refarming RNP Procedure
UMTS900 frequency allocation Strategy
2G capacity Migration and G900 frequency re-plan
UMTS900 Dimension and Plan
Inter-RAT Operation design
GU antenna solution
End
Start
Refarming key points:n Interference Analysis among
UMTS900 & other Systems
n Capacity Analysis to meet both GSM & UMTS traffic requirement
n GSM900 Frequency Planning
n Inter-RAT Operation Solution between GSM900 & UMTS900
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Antenna Solution
• UMTS Refarming Application
HUAWEI Confidential Page 17
2G Traffic Transfer ProcedureA>BA>B
User increasing
prediction
User increasing
prediction B: Traffic
requirement
B: Traffic
requirement
A: Existing
Configured capacity
A: Existing
Configured capacity
2G Traffic transfer2G Traffic transfer
Frequency bandwidth
After Refarming
Frequency bandwidth
After Refarming
Required Frequency
reuse Density
Required Frequency
reuse Density
N
Reduce the
Configuration
Reduce the
Configuration
G900->G1800G900->G1800 G900->U900G900->U900
G900 TFR G900 TFR
Y
Meet Required
frequency reuse
density
Meet Required
frequency reuse
density
YNFinal G900 site
configuration
Final G900 site
configuration
HUAWEI Confidential Page 18
2G traffic migration Strategy-1(G900->G1800) n Scenarios
ü GSM 1800M is available and continuously covered;
ü GSM 1800M has rich frequency;
ü G900 and G1800 are deployed with Co-site
n Migration Strategyü Active HR, raise its proportion configured up to
50%~70%ü Transfer traffic from G900 to G1800 by add site configuration
depend on the required frequency reuse factor from 9~12ü Increase 1800M sites co-sited with G900
GSM1800 GSM1800 GSM1800
GSM 900M GSM 900M GSM 900M
Better cell handover
Load balance handover
Coverage edge handover
n Traffic sharing Strategyü Camp on G1800 and G900 randomly in the idle state,
UE prefers to make the cell selection to G1800.ü Allow intra-frequency better cell handover;ü Load handover is performed according to the traffic
HUAWEI Confidential Page 19
2G traffic migration Strategy-2(G900->U900)
n Migration Strategyü Active automatically the U900 service for all the existing 2G usersü Dual-mode terminal and 3G rate policies appeal to the transferred
2G userü Voice traffic shared on UMTS900 shall be dimensioned, and the
experience shall be good.ü Transfer traffic from G900 to UMTS900 with the above
preconditions.
n Traffic sharing Strategyü Terminal camp on UMTS as long as it support G/U dual-mode ü Dual-mode UE camp on GSM in no UMTS coverage areaü Voice calls remain in individual RAT cellsü PS service on dual-mode UE shall perform Cell Reselection or HO
if it enter into UMTS coverage area
Better cell handover
Load balance handover
Coverage edge handover
UMTS 900M UMTS 900M UMTS 900M
GSM 900M GSM 900M GSM 900M
n Scenariosü U900 is continuously covered;
ü There is no 1800 spectrum
ü G900 and U900 are deployed with co-site
HUAWEI Confidential Page 20
UMTS Dimension Consideration
UMTS Voice Capacity Comparison
U2100R99+HSPA
F1 F1
U900 R99 +HSPA
F2 F2
U900R99+HSPA
F1 F1
U2100R99+HSPA
F2
U2100 is continuously covered;U900 is also continuously covered;
U900 is continuously covered;U2100 is NOT continuously covered;
Suggested Strategy:
Randomly CampingWith loading Balancing
Suggested Strategy:
Force to camp on F1, With service delaminating
HUAWEI Confidential Page 21
n Migration Strategyü Active HR, raise its proportion configured up to
50%~70% to reduce the existing G900 configurationü Maintain the existing G900 configuration with the less
frequencyü The quality will deduce and Huawei TFR( tight frequency
reuse) solution will slower the trend
Better cell handover
Load balance handover
Coverage edge handover
UMTS 900M UMTS 900M UMTS 900M
GSM 900M GSM 900M GSM 900M
n Scenariosü There is no 1800 spectrum
ü The U900 service for the existing 2G users needs
special application
ü 2G user’s will to migration is very low for the tough
Dual-mode terminal and 3G rate policies.
2G traffic migration Strategy-3 (G900 TFR)
HUAWEI TECHNOLOGIES CO., LTD. Page 22Huawei Confidential
Tighter Frequency Reuse solution for G900 capacity
S2/2/2S3/3/2
S4/3/3
S4/4/4
n Enhanced ICCn Enhanced UISSn IBCAn AMR
n IBCAn UISS (w/o GPS)n ICC/EICCn AMR
n DTXn Power controln TFO
Anti-Interference
tech.
Industry FR LOAD 50% FR LOAD 70% FR LOAD 90%
4.8MHz Frequency Available
nBandwidth :4.8MHz@900M( 63~86) after reframing
nBCCH layer : 63~76, TCH layer:77~86
nAMR penetration:90%
n Capacity target:: traffic increase 10%, HR 50%, Site Configuration shall be S444
Huawei TFR solution Case study:
nE-ICC:Spatial-Temporal Interference Cancellation Combining
nUISS:Um Interface Software Synchronization
nIBCA:Interference Based Channel Allocation 1.00%0.80
%1.70
%95.00
%93.00
%96.20
%2.00%91.00%90.50%
DTX/PC/AMR /EICC/TFO
/UISS+IBCAS444
1.00%0.40%
1.15%
96.55%
94.80%
97.70%1.50%94.00
%93.50%DTX/PC/AMR
/EICC/TFO/UISS+IBCA
S332
1.50%0.35%
1.00%
97.00%
95.50%
98.00%1.20%94.00
%93.50%DTX/PC/AMRS222
TCH Blocki
ng rate
SDCCH
Blocking
rate
SDCCH
drop rate
SD assig
n succe
ss rate
Handover succe
ss rate
Assignment success rate
call drop rate
UL Rx Qaul(0-4)
DL Rx Qaul(0-4)
featureSite Type
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Antenna Solution
• UMTS Refarming Application
HUAWEI TECHNOLOGIES CO., LTD. Page 24Huawei Confidential
Interference Type Between GSM and UMTS
nHow to calculated the interferenceACIR represents the interference between GSM900 and UMTS900
nMain interference introducenUMTS NodeB to GSM UE interference
nGSM UE to UMTS NodeB interference
nUMTS UE to GSM BTS interference
nGSM BTS to UMTS UE interference
nHow to minimize the interferencenCarrier separation minimize interference caused by adjacent carrier between GSM900 and UMTS900;
nIsolation distance minimize interference caused by same frequency between GSM900 and UMTS900.
HUAWEI TECHNOLOGIES CO., LTD. Page 25Huawei Confidential
GU Network Level Performance loss from GU adjacent frequency
0.00%0.00%0.05%0.04%0.04%0.02%0.00%0.00%0.00%0.00%0.00%0.00%2.6MHz
0.00%0.00%0.15%0.13%0.52%0.21%0.14%0.29%0.00%0.00%0.00%0.00%2.4MHz
0.79%1.63%0.86%0.89%0.63%0.43%0.48%0.83%0.00%0.00%0.00%0.00%2.2MHz
RuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrban
UMTS UL Coverage Loss (Cell Radius)
UMTS HSUPA Throughput Loss
UMTS DL R99 Capacity Loss (voice Sub.)
UMTS HSDPA Throughput Loss
EDGE DL Throughput Loss
GSM Voice Call Drop increase
GU Frequency Gap
UMTS 4.2MHz
GSMGSM
2.2MHz
0.00%0.00%0.16%0.13%0.04%0.02%0.00%0.00%0.00%0.00%0.00%0.00%2.6MHz
0.00%0.00%0.46%0.38%0.52%0.21%0.43%0.86%0.00%0.00%0.00%0.00%2.4MHz
3.80%5.01%2.68%2.66%1.89%1.28%1.39%2.48%0.00%0.00%0.00%0.00%2.2MHz
RuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrban
UMTS UL Coverage Loss (Cell Radius)
UMTS HSUPA Throughput Loss
UMTS DL R99 Capacity Loss (voice Sub.)
UMTS HSDPA Throughput Loss
EDGE DL Throughput Loss
GSM Voice Call Drop increase
GU Frequency Gap
4x3 frequency reuse for BCCHs, and 4x3 for TCHs
4x3 frequency reuse for BCCHs, and 1x3 for TCHs
GU900 Co-SiteUrban: ISD=750mRural: ISD=7500m
HUAWEI TECHNOLOGIES CO., LTD. Page 26Huawei Confidential
UMTS 4.2MHz
GSMGSM
2.2MHz
The worst performance of worst cells are shown as follows:
0.64%0.65%0.49%0.38%0.10%0.09%0.00%0.00%0.00%0.00%0.00%0.00%2.6MHz
0.69%0.90%0.89%0.76%4.32%1.62%2.50%2.58%0.00%0.00%0.00%0.00%2.4MHz
5.31%7.71%6.65%6.84%5.68%3.85%4.70%4.86%0.00%0.22%0.00%0.00%2.2MHz
RuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrban
UMTS UL Coverage Loss (Cell Radius)
UMTS HSUPA Throughput Loss
UMTS DL R99 Capacity Loss (voice
Sub.)
UMTS HSDPA Throughput Loss
EDGE DL Throughput Loss
GSM Voice Call Drop increase
GU Frequency Gap
GU900 Co-SiteUrban: ISD=750mRural: ISD=7500m
Cell Level Performance loss from GU adjacent frequency
HUAWEI TECHNOLOGIES CO., LTD. Page 27Huawei Confidential
Adjacent frequencies plan consideration for G900
l Frequency hopping, DTX & power control
enabled for TCH in adjacent carriers
GSM
l 2.6MHz frequency guard bandwidth between
BCCH and UMTS is recommended.
l PDCH assign to adjacent carriers
adjacent channels
l Adjacent carrier will be assigned to the
Underlay of Concentric Cell
l Both adjacent frequencies in the sandwich
schedule shall be not assigned in a cell.
carrier … … x y … …
Underlay
Overlay
HUAWEI TECHNOLOGIES CO., LTD. Page 28Huawei Confidential
Buffer Zone: GU co-frequency interference guard
B area is the frequency isolation area, the frequencies of G900 is different from both A and C area
C area is corresponding to UMTS coverage.
UMTS sites
Buffer zone
GSM sitesA
B
C
A area is corresponding to GSM coverage.
Proposal for buffer zone plan:nBuffer zone distance is commonly 2~3 layer sites or the distance of twice cell diameter,
nRF optimization or obstructed topography will deduce the size of buffer zone
nThe co-frequency interference signal received in the A or C shall below -110dBm
n HUAWEI buffer zone solution to solve the interference when UMTS900 sites and GSM900 sites are assigned the same frequency , but in different regions
GSM900
UMTS900 GSM900GSM900
GSM900GSM900
Spectrum allocation
HUAWEI TECHNOLOGIES CO., LTD. Page 29Huawei Confidential
Buffer Zone Case Study
CASE: Optus, Australia
GSM900 Cell1
GSM900 Cell2
UMTS900 Cell0
Buffer Zone
nBasic Info• Buffer zone locates at the edge of urban area
• ISD: 5.5km
3.2 2.2 No Buffer Zone
0.3 0.1 Buffer Zone (one site)
UE Interference Rise (dB)RTWP Rise (dB)
Node B -> UE ImpactUE -> Node B ImpactnAchievement for Buffer Zone• UL interference reduces 2.1 dB
• DL interference reduces about 3dB
GSM900 (Cell 2)
GSM900(Cell 1)
UMTS900 (Cell 0)GSM900
GSM900 (Cell 1)
GSM900
HUAWEI TECHNOLOGIES CO., LTD. Page 30Huawei Confidential
UMTS UE Ec/Io Distribution compare
0
20
40
60
80
100
>=-8 >=-10 >=-12 >=-14 >=-16 >=-18 Ec/Io
Ec/Io
Pro
gres
sive
Stat
istic
%
No Isolation One Layer Isolation
Buffer zone Impact to Performance of GU sites
nUMTS UE Ec/Io distribution compareü UMTS cell radius: 4Km;
ü GSM topology mode:4X3;
n GSM MS C/I distribution compareü GSM topology mode:4X3;
GSM UE C/I Distribution Compare(BCCH:4X3)
0%
20%
40%
60%
80%
100%
C/I>=9 C/I>=12
C/I
Prog
ress
ive
Stat
istic
None Interference Tw o Layer Isolation One Layer Isolation
GSM UE C/I Distribution Compare(TCH:4X3)
0%
20%
40%
60%
80%
100%
C/I>=9 C/I>=12
C/I
Pro
gres
sive
Sta
tistic
None Interference Two Layer Isolation One Layer Isolation
n The impact between Base Station and UE can be ignored with 2~3 layer isolation zone.
G900 Sites U900 Sites
One layer Isolation zone
HUAWEI TECHNOLOGIES CO., LTD. Page 31Huawei Confidential
Case Study: 10MHz Spectrum for Refarming
Operator B
Example: Spectrum Assignment in 900MHz
V OperatorOperator C
10MHz
How to perform GSM and UMTS refarming?
?
HUAWEI TECHNOLOGIES CO., LTD. Page 32Huawei Confidential
Case Study: Assignment of GSM TRX and UMTS Carrier
Operator B
UMTS GSM
V operatorOperator C
10MHz
Ø4.6MHz bandwidth allocated for UMTS900
Ø5.4MHz spectrum available for GSM900
4.6MHz
ØSandwich Solution recommended.
ØNo interference to neighboring operators.
HUAWEI TECHNOLOGIES CO., LTD. Page 33Huawei Confidential
Case Study: Frequency Planning for VF Italy
l Minimum 1 CH (200kHz) between UMTS900 and BCCH.
BCCH TCH UMTS900
15 channels
50 channels
23 channels10 channels 1 channel1 channel
TCH TCH
Operator B
BCCH
Operator C
U900min. 2 CHs min. 1 CH min. 2 CHs
l GSM frequency planning: SFH to spread the interference in the network.15 channels for BCCH, 1 SFH group for all TCH, i.e. MA={CH1, CH2, CH3, …, CH12}.
l 2 CHs (1 TCH + 1 guard CH) between BCCH of V operator and UMTS900 of Operator C.
l 2 CHs (1 TCH + 1 guard CH) between UMTS of V operator and BCCH of Operator B.
Frequency Planning: 1+2+2+SFH
V operator
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Antenna Solution
• UMTS Refarming Application
HUAWEI TECHNOLOGIES CO., LTD. Page 35Huawei Confidential
Inter-RAT Operation Strategy 1--U900 for Rural coverage and U2100 for Urban coverage
Hot Spot & Dense Urban
UrbanSuburban & rural
UMTS2100
UMTS900
GSM900 GSM900
n Coverage zone HSPA /R99
n UMTS2100-UMTS900 inter-freq hard handover
n UMTS900/GSM inter-RAT handover
n UMTS2100 intra-freq soft handover
n UMTS900 intra-freq soft handover
HUAWEI TECHNOLOGIES CO., LTD. Page 36Huawei Confidential
Inter-RAT Operation Strategy 2--U900 for continuous coverage and U2100 for hot area capacity expansion
•The first phase of UMTS900 deployment will
be mainly for coverage continuity and
UMTS2100 absorb load in hot spot areas.
UMTS 900 Cell
GSM Cell GSM Cell GSM Cell
UMTS 900 Cell
UMTS 900 Cell
UMTS 2100 Cell
UMTS2100UMTS
900
UMTS2100
UMTS2100
UMTS900UMTS
900
UMTS900UMTS
900
UMTS900UMTS
900
T Uni-directional Handover fromUMTS 2100 cell to UMTS900 cellbased on coverage
T Uni-directional blind Handoverfrom UMTS 2100 cell to UMTS900 cell based on load T Users camp on UMTS 2100 layer
to establish R99 + HSDPA services
T Continuous UMTS layer for coverage
• All UMTS layers provide R99+HSPA
service
• Users camp on 2100 layer when available
• According to the cell load the call will be
established in 2100 layer or re-directed to
900 layer.
T Uni-directional blind Handoverfrom UMTS 900 cell to GSM900 cell based on load
HUAWEI TECHNOLOGIES CO., LTD. Page 37Huawei Confidential
Mobility Management:Roaming strategy between GSM and UMTS
3G subscribers configured to camp on WCDMA network with the higher priority by choosing the UTRAN ACCESS TECHNOLOGY in the USIM file
GSM
WCDMA WCDMA
UMTSàGSMcell reselection
GSMàUMTSPLMN or cell reselection
n Cell reselection from UMTS to GSM networksØ via Inter-system Cell Reselection : No upgrade for GSM networks
n Cell reselection from GSM to UMTS networksØ via Inter-system Cell Reselection: GSM BSS need to be upgraded to support SI2quaterØ via PLMN/Access Technology Reselection: No upgrade for GSM networks
HUAWEI TECHNOLOGIES CO., LTD. Page 38Huawei Confidential
Mobility Management:Inter-RAT handover between GSM and UMTS
CSServices
PacketServices
Camping on UMTS in idle mode Handover to 2G
Staying in 2G during the call
Call ends, Cell Reselection to 3G
Service begins…
Cell Reselection or cell Change Order to GPRS
Cell Reselection to UMTS
Cell Reselection to GPRS
UMTS cell
GSM/GPRS cell
n Unidirectional handover from UMTS to GSM is proposed for CS services.
n Bidirectional handover between UMTS and GSM by cell reselection is proposed for PS services
Note: No upgrade of GSM network for handover from 3G to 2G
HUAWEI TECHNOLOGIES CO., LTD. Page 39Huawei Confidential
UMTS2100
Idle Mode RRC setup RAB setup Connected
UMTS900
GSM
SHO
SHO
Cell R
e-s
ele
ctio
n
RA
B D
RD
LD
R
RR
C D
RD
Inte
r-RA
T H
O
RR
C R
-Dir
DR
D to
GS
M
RR
C R
-Dir
RA
B D
RD
LD
R
IFH
O
Summary for GU Mobility Startegy
Full flexibility for Traffic Management
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Antenna Solution
• UMTS Refarming Application
HUAWEI TECHNOLOGIES CO., LTD. Page 41Huawei Confidential
Contents of Antenna Solution
ØCase 1: Antenna Solution with Huawei SDR Product One Antenna is needed to support GSM and UMTS simultaneously.
ØCase 2: Sharing Existing GSM900 AntennaCo-antenna with SASU
Co-antenna with 3dB combiner
ØCase 3: Independent Antenna for U900
HUAWEI TECHNOLOGIES CO., LTD. Page 42Huawei Confidential
Case 1: Huawei SDR Product RRU3908
GU900GSM900
UMTS900 Rollout UMTS 900
Switch on
now
swap
GSM900 ModernizationWith SDR Module UMTS900 Switch on
RRU3908
SDR
GSM900 G+U 900
RRU3908 Solution (1 RRU = GSM900 + UMTS900 modes)
BBU3900
Add UMTS Card
GSM900
BBU3900
l Multi mode (GSM/UMTS) supported simultaneously in one module.l The specifications of RRU3908 are fully Compliant with ETSI.
HUAWEI TECHNOLOGIES CO., LTD. Page 43Huawei Confidential
Case 1: Huawei SDR Product MRFU
GU900GSM900
UMTS900 Rollout UMTS 900
Switch on
now
swap
GSM900 ModernizationWith SDR Module UMTS900 Switch on
BTS3900
GSM900 G+U 900
MRFU Solution (1 MRFU = GSM900 + UMTS900 mode)
Add MRFU modules
GSM900
MRFU
MRFU
MRFU
l Software upgrade to UMTS900l Max. 2*80W output power in one MRFU modulel 6 Carriers for GSM only, 4 Carriers for UMTS onlyl For dual mode: UMTS 1C + GSM 1~5C, UMTS 2C + GSM 1~4C
New-add: 3G 900M + 2G 900M
UMTS
UMTS
UMTS
G/U
G/U
G/U
Existing: 3G 2100M
HUAWEI TECHNOLOGIES CO., LTD. Page 44Huawei Confidential
Case 1: Huawei SDR Product MRFU
GU900GSM900
UMTS900 Rollout UMTS 900
Switch on
now
swap
GSM900 ModernizationWith SDR Module UMTS900 Switch on
BTS3900
GSM900 G+U 900
MRFU Solution (1 MRFU = GSM900 or UMTS900 mode)
Add MRFU modules
GSM900
MRFU
MRFU
MRFU
MRFU
MRFU
MRFU
MRFU
MRFU
MRFU
l Software upgrade to UMTS900l Max. 2*80W output power in one MRFU modulel 8 Carriers for GSM only, 8 Carriers for UMTS only
For Some European countries not supporting MSR
HUAWEI TECHNOLOGIES CO., LTD. Page 45Huawei Confidential
Case 1: Antenna solution with Huawei SDR Product
900MHz antenna
No change for antenna and feeder system
GSM900 + UMTS900
BTS3900 DBS3900
GSM900 + UMTS900
MRFU
MRFU
MRFU
MRFU
MRFU
MRFU
1 Separate Antenna Solution
2 Co-feeder, co-antenna Solution
easy
Separate tilt & azimuth tuning for network optimizationHigh cost for adding new antennas & feedersSlow deployment for additional engineering
Opt
imiz
atio
n
Engineering
Fast deployment for easy engineeringLow cost for sharing the legacy devicesHigh difficulty for network optimization
difficult
difficult
easy
Ø Multi mode (GSM/UMTS) supported simultaneously in one module.
ØOnly one antenna is needed to support GSM and UMTS.
HUAWEI TECHNOLOGIES CO., LTD. Page 46Huawei Confidential
Case 2:Sharing Existing GSM900 Antenna
UMTS TXGSM&UMTS RXD
GSM TXGSM&UMTS RXM
3dB 3dB
TX/RXM RXD
GSM900 UMTS900
Co-antenna with SASU and SASA
Co-antenna with3dB combiner
UMTS TXGSM&UMTS
RXD
GSM TXGSM&UMTS
RXM
SASU
TX/RXM TX/RXD
GSM900 UMTS900
SASA
HUAWEI TECHNOLOGIES CO., LTD. Page 47Huawei Confidential
SASU: Same band Antenna Sharing Unit
SASU Characteristic: lSolution for the shared antenna between GSM and UMTS system or between two UMTS systems on the same band. l 6-port unit for antenna & feeder, 1 Tx port for GSM & UMTS respectivelySASU Advantage:l No extra loss in the uplinkl Maximum 0.6dB insertion loss in the downlinkl No impact on frequency planning for GSM & UMTS
Install on the poleInstall on the wall
HUAWEI TECHNOLOGIES CO., LTD. Page 48Huawei Confidential
Ø SASU Characteristicn 6-port unit for antenna & feeder
sharing between GSM900 and UMTS900n 1 Tx port for GSM & UMTS respectively
Huawei SASU for GU900 Co-antenna Solution
Ø SASU Advantagesn No extra loss in the uplink
n Maximum 0.6dB insertion loss in the downlinkn No impact on frequency planning for GSM & UMTS
Install on the wall
Install on the poleSASU(Same band Antenna Sharing Unit)
HUAWEI TECHNOLOGIES CO., LTD. Page 49Huawei Confidential
SASA: Same band Antenna Sharing Adapter
SASA:lCombine the TX carriers on two antennas into the carriers on one antenna, lNo affecting the performance of the existing GSM network. GSM_M
GSM_D
Principles of the SASA
HUAWEI TECHNOLOGIES CO., LTD. Page 50Huawei Confidential
SASU Solution Helps to Retain GSM CoverageBest Co-Antenna Solution for Overlap Mode
U900Node B
G900BTS
combiner
antenna
combiner
Cable attenuatorCable attenuator
Traditional Combiner SASU Solution
antenna
U900Node B
G900BTS
SASU
Disadvantage of Combiner
n 3dB insertion loss (DL/UL)n 30% coverage reducedn Not support RET
New sites needed to retain existing GSM coverage
Advantage of SASU
n negligible loss on ULn < 0.6 dB loss on DLn Support RET function (with 10dB Gain)
Negligible Impacts to GSM
(SASU: Same Antenna Sharing Unit)
HUAWEI TECHNOLOGIES CO., LTD. Page 51Huawei Confidential
Case 3: Independent Antenna for U900
Independent antenna
GSM900 UMTS900
In case of high configuration, 2 independent antennas can be used.
HUAWEI TECHNOLOGIES CO., LTD. Page 52Huawei Confidential
AdditionalCost
Sites renegotiation•New antenna and pole
Slow the pace of site deployment• Longer time to market
Additional equipment cost •New antenna•New pole•New feeder•New TMA
Limitation of evolution• lack of installation space for LTE/SAE evolution
Disadvantage of Independent Antenna U900&G900
Additional installation cost •New antenna•New pole•New feeder
Additional maintenance cost •New antenna
HUAWEI TECHNOLOGIES CO., LTD. Page 53Huawei Confidential
Antenna Solution Summary
3G and 2G system can not adjust the down tilt angle and azimuth
independently;
1) save the space and cost of antennas and feeders;
2) No insertion loss;
3) Easy RF tuning for 2G/3G co-coverage
objectives;
Co-antenna with GU mRRU/mRFU
1) 3G and 2G system can not adjust the down tilt angle and
azimuth independently;
2) downlink increase more than 3 dB loss.
Save the installation space and cost for
antenna and feeder
Co-antenna with 3dB combiner
1) 3G and 2G system can not adjust the down tilt angle and
azimuth independently;
2) downlink increase less than 0.6dB loss.
Save the installation space and cost for
antenna and feederCo-antenna with SASU
much additional cost neededEasy to implement RF optimization respectively.
Independent antenna
DisadvantagesAdvantagesSolution
Agenda• UMTS900 Solution & Deployment Strategy
• Huawei Refarming Solution
• 2G Traffic Transfer Strategy
• GSM900 Frequency re-plan and performance
• Inter-RAT Operation Solution
• Co-Antenna Solution
• UMTS Refarming Application
HUAWEI Confidential Page 55
Refarming Solution case study – S Operator
n Network Information for Refarmingü Scenario :Suburban& Rural
ü G900 and G1800 and U2100 , total 45 Sites
ü Bandwidth : 9.8MHz(76-124) @900M,
23.8MHz (512-525, 647-751)@ 1800MHz
ü UMTS900 Refarming : 1 U900 carrier
n Refarming Solutionü Swap and Refarming with Single RAN3.0 MRRU for
G900/G1800&U900
ü Sandwich allocation, 4.2MHz of total 12.4MHz for UMTS
ü G900:76~89,111~124; U900:90~110
ü Traffic migration :GSM900-> GSM1800M UMTS 4.2MHz
GSMGSM
2.2MHz
89 110
HUAWEI Confidential Page 56
Huawei frequency Refarming
URBAN
Channels: 64-124
Area to refarm : 4.2MhzChannels: 76 - 89 and 111 - 124
Zone de garde: Replan in 10Mhz
Channels: 76 - 124
ü Frequency re-plan area shall be separated
into refarming area, buffer zone & RF
optimization zone;
ü G900 cell BCCH shall has a frequency guard
over 2.6MHz with UMTS channel, available
range is 76~87 and 113~124,TCH of
G900 Co-sited with U900 shall not use the
adjacent frequenies(89,111), while TCH of
separate G900 site can use them.
HUAWEI Confidential Page 57
Buffer Zone Frequency Planning
Sites in buffer zone
Sites in Refarming zone
Sites in RF optimization zone
HUAWEI Confidential Page 58
Inter-RAT Operation Solution in Refarming Area
Adjacent cell relationshipü G900 Adjacent cells: D1800, U900(co-site),U2100 F0(no co-site),
üU900 Adjacent cells:G900,,U2100 F0
üU2100 F0 Adjacent cells: U2100 F1, U2100 F2, U900(GU co-site), G900(no co-site)
Mobile strategyüIn idle state, bidirectional reselection between GSM and UMTS
üIn connection state, handover from UMTS to GSM, but not allowed from GSM to UMTS.
HUAWEI Confidential Page 59
Intra-UMTS Multi- carrier Solution
Adjacent cell relationshipü G900 Adjacent cells: D1800, U900(co-site),U2100 F0(no co-site),
üU900 Adjacent cells:G900, U2100 F0
üU2100 F0 Adjacent cells: U2100 F1, U2100 F2 ( overlapped coverage cell ), U900(GU co-site), G900(no co-site)
Mobile strategyüIn idle state, bidirectional reselection between U900
and U2100, Bidirectional handover based on coverage from UMTS2100 to UMTS900 is recommended
üIn only U2100 F0,F1,or F2 overlapped coverage area, UE camp on UMTS2100 F0 as preference.
ü U2100 F1 and F2 have higher priority for HSPA service than U2100 F0, and such service accessing to F0 will DRD to F1,F2.
HUAWEI Confidential Page 60
Swap and Refarming flow - Refarming
HUAWEI Confidential Page 61
Swap and Refarming flow - Swapping
HUAWEI Confidential Page 62
Swap and Refarming flow - Swapping
HUAWEI Confidential Page 63
Performance Overview- GSM CS
C S T ra ff ic
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
9000
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
Erl
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
(
T a u x e c h e c Q o S N o k i a( 1 - C S S R)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
AfterRefarming&Before(NSN)After SWAP(HW)
T a u x d e c o u p u r e r a d i o ( D C R)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
S D C C H D r o p s
0
0.5
1
1.5
2
2.5
3
3.5
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
HUAWEI Confidential Page 64
Performance Overview- GSM PS
% O ut In te r B SC Ha ndo ver F ail ur es wit h Blo cks
0
2
4
6
8
10
12
14
Mon. Tues. Wed. Thurs. Fri. Sat.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
% In Inter BSC Handover Failures with Blocks
0
1
2
3
4
5
6
Mon. Tues. Wed. Thurs. Fri. Sat.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
% In I nta r BS C Ha nd ove r Fa il ur es wi th B lo ck s
0
2
4
6
8
Mon. Tues. Wed. Thurs. Fri. Sat.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
% Ou t I nt ar B S C Ha n do ve r F ai l ur es wi th Bl oc k s
0
2
4
6
8
Mon. Tues. Wed. Thurs. Fri. Sat.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
HUAWEI Confidential Page 65
Performance Overview- GSM PS
% ED G E R et r a n sm i s s i on U L
0
2
4
6
8
10
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
% E D G E R e t r a n s m i s s i o n D L
0
5
10
15
20
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
%T BF FA IL UL
0
5
10
15
20
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
% T BF F A I L D L
0
2
4
6
8
10
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
HUAWEI Confidential Page 66
Performance Overview- GSM PS
% M CS5_ 9
80
85
90
95
100
Mon. Tues. Wed. Thurs. Fri. Sat. Sun.
%
Before Refarming(NSN)
After Refarming&BeforeSWAP(NSN)After SWAP(HW)
06.April 2006
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
Thank You
www.huawei.com