4 - nsn - wcdma_refarming_site_solution_africacom2008 - 081120.pdf
TRANSCRIPT
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8/17/2019 4 - NSN - WCDMA_Refarming_Site_Solution_AfricaCom2008 - 081120.pdf
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Deploying UMTS900
Re-use of existing GSM900infrastructure
AfricaCom 2008
1 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
ovem er
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Synopsis
• euse o ex s ng n ras ruc ure – Reduce the impact on CAPEX and OPEX by site sharing and
maximum reuse of hardware
▪ Eliminate site acquisition and rental costs
▪ Eliminate site civil work including masts and site infrastructure
– Co-locate GSM and UMTS sites as far as possible (re-use cabinets,power, ac -up sys ems, an enna nes an ransm ss on
– Re-use Network Management
▪ Reduce operational complexity
• Leads to speed of deployment of the network
2 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
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Content
• Base Station Site System
• Cabinets
• Antenna Lines• Other considerations
• Network Management (OSS)
• Summary
3 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
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GSM 2+2+2 GSM 2+2+2
2G BTS site evolution to WCDMA 900 MHz
Inside GSM
BTS cabinet
Inside
Service
GSM 4+4+4 GSM 4+4+4WCDMA 900 2+2+2
cabinet
GSM 4+4+4 GSM 4+4+4WCDMA 900 2+2+2
Next to GSM
BTS cabinet
LEGEND
Outdoor,
Feederless
RF
GSM 4+4+4 GSM 4+4+4WCDMA 900 2+2+2
4 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
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Battery string
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Solutions for Antenna System Sharing
Separate antennas forGSM 900 and for WCDMAShared900 or single antenna with
2 broad band elements
inside same radome
GSM 900Mast Head
GSM 900 Antenna
WCDMA900 Mast
900
Antenna
Shared
Antennafor GSM
900 andWCDMA
900
ua or
900 MHz,
exRF module
Amplifiers
Feeders
Head Amplifiers
Feeders
as ea Amplifiers
Sharedfeeders
AISG Compliant
Separate outputfor antenna tilt
signals
Optical fiber and DCcable
Flexi MultiradioCombiner
Flexi WCDMASystem module
BTS Flexi
WCDMA 900BTS
Flexi WCDMA 900RF modules
5 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
exSystem module
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Shared Antenna System for GSM 900 and WCDMA900 by Flexi Multi Radio Combiner
GSM 900 GSM 900 & WCDMA 900
Shared
Shared antenna systems inWCDMA refarming
GSM 900Mast Head
GSM 900 Antenna
Shared
for GSM
900 andWCDMA900
900 MHz, • Co-sited GSM 900 and WCDMA900 base stations can utilize thesame antenna system
• Flexi Multiradio Combiner (MRC) Amplifiers
Feeders
Amplifiers
Sharedfeeders
AISG Compliant
Separate outputfor antenna tilt
signals
ou es s are an enna sys emperformance compared to typicalcombiners for antenna sharing
• MRC used together with Dual
Flexi MultiradioCombiner
for sharing losses
Benefits of sharing antennas:
• Faster site construction andWCDMA 900 rollout: existin GSM
BTS
Flexi WCDMA 900RF modules
Flexi WCDMA
900 antenna system can remainuntouched
• Savings in antenna system: sameantenna lines for GSM / WCDMA
6 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
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• Visual impact: less antenna cablesand antennas
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Shared Antenna System for WCDMA and GSM
Flexi Multiradio Combiner GSM 900 & GSM 1800 & WCDMA 900 & WCDMA 2100
Shared X-pol antenna for GSM900 and WCDMA 900 (If
Shared X-pol
tilt then 2 pieces of V-polantennas are needed
Shared MHAs
Diplexer antenna for
GSM 1800 and
WCDMA 2100with broad bandelement inside
• Combining loss for WCDMA2100 and GSM 1800 < 0.6 dB
• Combining loss for WCDMA
Triplexer
– UL compensated byMHA
– DL < 1dB
Flexi
av ngs n an enna nes anconstruction
• 6 feeder lines instead of 24
• 6 antennas instead of 12
WCDMA2100 BTS
GSM1800 BTS
GSM900 BTS
WCDMA900 BTS
MultiradioCombiner Simpl ified antenna system
means lighter construct ion andlower installation cost
Improved visual impact means
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easier si te acquis ition
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Other considerations
• Maximise re-use of existing GSM sites
– Optimally carry traffic from site to core network
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– ATM aggregation over E1 leased lines (“One Pipe”)• IP/Ethernet-based transport as an alternative
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• If needed, additional rectifier capacity should be added
• Could result in additional batteries if backup time is to be maintained
8 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
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Content
• Base Station Site System
• Cabinets
• Antenna Lines• Other considerations
• Network Management (OSS)
• Summary
9 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
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Versatile OSS functionality for efficient WCDMA
refarmingCentralized OSS for WCDMA refarming
• One system for monitoring, measuring and configuring
the network and services• Seamless management of multi-technology networks
technology requirements
•Management provided with simplified roll-out utilizingNetAct tools
– Provides roll-out support for GSM spectrum efficiencyfeatures, over the whole network or only in part bymanaging licenses and configuration management
• networks utilizing NetAct tools – Optimizes frequencies of existing GSM network to enable
successful WCDMA deployment
10 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
– requirements
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Content
• Base Station Site System
• Cabinets
• Antenna Lines• Other considerations
• Network Management (OSS)
• Summary
11 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
Customer confidential
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Summary
so u on ver e rom e es s
• GSM900 network planning grid can be used
•
• HSDPA data rate is increased significantly at cell edge
With Nokia Siemens Networks WCDMA900 solution
• 4.2 MHz spectrum allocation for WCDMA is enough• Inter-system and inter-frequency service continuity provided
• Antenna line can be shared between GSM and WCDMA
• e c p m zer s a power u oo or mprov ng e ra onetwork performance
12 © Nokia Siemens Networks WCDMA Refarming Site Solution / SSM RA MEA / November 2008
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Thank you
revor a sSolution Manager Nokia Siemens Networks
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