High Level Perspectives of B3G

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High Level Perspectives of B3G
Yang Xuezhi Huawei Tech. Co. Ltd.
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Content
Current Situation of Mobile Comm. B3G
Requirements B3G Technology Trend Conclusion

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Current Situation

• WCDMA R99/R4 are at the first period of
  commercial deployment
• R5/HSDPA has achieved a peak data rate of 14Mbps
  at 5MHz frequency Band
• Wimax/802.16 achieved 100Mbps data rate, and
  mainly focus on data communication
• 3GPP start a LTE project to achieve an object
  similar as WiMax
• ITU-R WP8f B3G activities

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Current Situation

• Voice and Low rate data services
• Traditional Services
• Remain the main income resource for the operator
  
• Data and Multimedia Application
• Main bandwidth consumer in the future
• But not the main income for the operator

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Content
Current Situation of Mobile Comm. B3G
Requirements B3G Technology Trend Conclusion

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Service Requirement

• Large amount kinds of services
• Life, business, learning, entertainmentetc.
• Voice, data, audio, video, multimedia
• RT, nRT, CBR, VBR QoS requirement
• Imagination in Services are unlimited in the
  mobile internet era
• Difficult to predict
• E.g. SMS in China

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Service Environment

• Concept from ITU-R WP8f IMT.Method
• Traffic Distribution will change with location
  and time
• Teledensity
• User pattern home, office, wide area
• Service environment describe the statistical
  characteristics of service mix in an area

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Spectrum

• 2G spectrums
• 800, 900,1800, etc..
• IMT2000 spectrum has been assigned
• 2GHz frequency band
• ITU are allocating new spectrum for B3G
• 2.52.69GHz
• Higher frequency Band are Expected
• below 6GHz

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Radio Environment

• Higher frequency band means
• Faster Doppler and Rayleigh fading
• Smaller coverage
• Mobility support capability decrease
• Different propagation scenarios
• City, Rural, Plane, Mountain area,
• Street, Outdoor, Indoor, Subway, etc

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Service/Radio Environment

• Network deployment to fulfill the needs of
  Service/Radio Environment

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High Level Requirements of B3G

• Services/Service environment
• Radio Environment
• Decay and Mobility support
• Interconnection / Interaction / harmonization of
  different networks
• Operation OM and BOSS
• Low CAPEX and OPEX

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Technical Requirements of B3G

• Air Interface
• High data rate and Spectrum efficiency
• Micro Mobility Support
• Network Architecture
• Simple Architecture
• Macro Mobility Support
• QoS Support Resource Management
• IP in the CN
• Shared channel in air interface

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The Main Requirement of 3GPP LTE Air Interface

• Optimization for Services from PS domain
• Peak Data Rate100Mbps/DL, 50Mbps/UL
• Higher Spectrum Efficiency24R6
• Mobility Optimization for Low Mobility,
• Shorter Latency 10ms at U-Plane, and 100ms at
  C-Plane
• Scalable Bandwidth1.25,2.5,5,10,15,20

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Quality of Service Solutions

• Layered QoS Solution
• Pricing Policy (Operation)
• encourage or suppress potential demand of
  services
• Network Capacity Deployment (Network Plan)
• To accommodate the traffic distribution in
  different area and time period
• Traffic Engineering (Core Network)
• Utilize the capacity efficiently
• Admission Control / Load control (Air interface
  Layer 3)
• In case of congestion, fulfill the demands of
  high priority customer and services
• Scheduling (Air interface Layer 2)
• Bit Rate, Delay and Reliability insurance of
  different services on Shared channel
• Channel capacity (Air interface Layer 1)
• Provide the basic transmission capability
• Interactions between different layers

Macro
Micro
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Content
Current Situation of Mobile Comm. B3G
Requirements B3G Technology Trend Conclusion

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B3G Technical Trends

• Major technical fields for Physical Layer
• Multi-Carrier OFDMA, MC-CDMA, etc
• Multi-Antenna MIMO, Smart Antennas
• Link Adaptation AMC, HARQ
• More Efficient Channel Coding Turbo and LDPC
• More Efficient Receiver

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Multi-Carrier Technologies

• Based on OFDM technology
• OFDMA, MC-CDMA
• ICI and ISI are eliminated or greatly reduced, to
  achieve higher spectrum efficiency.
• Challenges
• Network Plan
• PAR
• Synchronization
• Mobility support

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Multi-Antenna Technology

• Multi-Antenna
• Get the benefit of space diversity
• Smart Antenna and MIMO,
• Though different, seems some similarity exist
  between them
• Challenges
• Cost particular to MS
• Efficient algorithm Fast and Stable

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Link Adaption

• Link Adaption
• AMC , HARQ Fast scheduling
• Achieve the maximum capacity
• Challenges
• Delay and CSI report error in high mobility

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Content
Current Situation of Mobile Comm. B3G
Requirements B3G Technology Trend Conclusion

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Huawei The B3G Promoter

• Dream of Telecommunication Society
• Unified Standard
• Harmonized Frequency Band Assignment
• Anytime
• Anywhere
• High Quality Service
• Promote the Progress of B3G

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