DO Advanced – Maximizing the Performance of EV-DO


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Qualcomm gave a presentation on the advance features of the DO-Advanced version of the 3GPP2 Packet Data technology - HRPD. Rev.B and Rev.C are the Multi-carrier versions.

Presentation by
Rasmus Hellberg, Ph.d, Director, Technical Marketing, Qualcomm

Rasmus Hellberg is part of Qualcomm’s technical marketing team where he focuses on the wireless evolution. He previously spent 10 years in the wireless infrastructure industry and held several product management positions in Sweden and San Diego covering CDMA2000, 1xEV-DO, WCDMA and PDC, mainly focusing on the Radio Access network product. Rasmus started his telecom career in product management working on the Japanese PDC system and later on the first commercial WCDMA product.

Prakash Sangam, Senior Manager, Technical Marketing, Qualcomm

Prakash Sangam is a Senior Manager in Qualcomm’s Technical Marketing group. He develops and communicates key messages for a variety of wireless technologies supported by Qualcomm. Sangam joined Qualcomm in 1998 and has served in numerous engineering and marketing roles with a focus on developing markets such as India, Southeast Asia, the Middle East and Africa

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DO Advanced – Maximizing the Performance of EV-DO

  1. 1. Welcome DO Advanced - Maximizing the Performance of EV-DO • Thank you for joining us at this FierceLive! Webinar. We will begin momentarily. • The audio will be streamed live over the Internet, so please make sure your computer speakers or headphones are turned on and your volume is turned up. • During the presentations, you can submit your questions by filling in the “Ask a Question” box at the bottom of this screen. The speakers will answer questions at the end of the Sponsor: webinar. Enjoy the presentation!
  2. 2. DO Advanced: Maximizing the Performance of EV-DO Sep 21st, 2010 Rasmus Hellberg & Prakash Sangam 2
  3. 3. Disclaimer Nothing in these materials is an offer to sell any of the components or devices referenced herein. Certain components for use in the U.S. are available only through licensed suppliers. Some components are not available for use in the U.S. QUALCOMM Incorporated, 5775 Morehouse Drive, San Diego, CA 92121-1714 Copyright © 2009 QUALCOMM Incorporated, All rights reserved. 3
  4. 4. DO Advanced: Maximizing the Performance of EV-DO Agenda  CDMA2000/EV-DO Market Update  DO Advanced  How Smart Network techniques adopt network to changing demand  Even better performance leveraging advanced devices  Firmware release & standards completion  Examples of performance improvement  Q&A 4
  5. 5. Large CDMA2000 and EV-DO Ecosystem > 500 Million ~ 310 CDMA ~ 2,353 CDMA2000 CDMA2000 Subs Operators Devices > 165 Million EV-DO ~ 114 EV-DO ~ 555 EV-DO ~ 96 Rev. A ~ 237 Rev. A > 35 Million Rev. A 2 Rev. B CDMA2000 1X EV-DO CDMA2000 1X + EV-DO Sources: Subscriber Information : Wireless Intelligence estimates as of Jul 19, 2010 for quarter ending Jun 30, 2010, not including WLL; 5 Operators, devices, vendors related information : CDG. Jun 2010
  6. 6. EV-DO’s Strong Growth Continues  Substantial growth expected in China, India and other emerging markets >355M Subs Millions Source: Wireless Intelligence estimates as of Jul19, 2010 for quarter ending Jun 30, 2010, *number of unique wireless connections, Operator Data: CDG (Jul-10) 6
  7. 7. EV-DO Rev. B is Commercial and Growing Rev. B “Multicarrier EV-DO” Gaining Momentum Growing Operator Commitment Commercial China Telecom Telecom Telecom Strong Vendor Support INWI was formerly known as Wana Telecom; Source: Statements from vendors and operators, and CDG 7
  8. 8. Similar Rev. B and LTE Cell Edge Performance using Fair Comparison When using same amount of spectrum DL Capacity DL Cell-Edge Data Rates LTE EV-DO 1.1x x (11.9 Mbps) (10.3 Mbps) 63 kbps 53 kbps EV-DO LTE (Rev. B) Rev. B (RxD 1x2) Rel . 8 (2x2 MIMO) Cell edge performance can be traded for even higher cell capacity at the expense of fairness Source: Qualcomm Simulations for 10 MHz FDD: 3GPP2 methodology - 2km site-to-site dist., embedded sector, mixed channel, full buffer traffic, proportional-fair 8 scheduler ; 7 carrier considered for Rev. B . Cell-edge rates are the worst 5 percentile of the over all data rate distribution in the cell, 64 QAM not considered for Rev. B
  9. 9. Incremental and Cost-Effective Upgrades Broadband Broadband BTS Interference Up to 3 carriers Smart Networks downloads uploads cancellation Rel. 0 Rev. A Multicarrier H/W Upgrade DO Initial Investment EV-DO EV-DO Rev. B CDMA2000 1X Advanced Channel Card Channel Card SW Upgrade Channel Card SW Upgrade 1.5x Voice 4x Increase in capacity voice capacity 1X 1X Enhancements Advanced Network Upgrade Channel Card An evolution path that leverages current investments 9
  10. 10. DO Advanced: New Dimension of Enhancements Software Software Infra/Standards Upgrade Upgrade Independent Enhanced Smart Connection Advanced Networks Management Devices Increased network Increased connection- Enhanced Equalizer capacity and data capacity by more - Improved performance rates by exploiting efficient use of for uneven and bursty uneven network existing resources traffic loading Mobile Tx Diversity (Network Load Balancing, - Higher UL capacity and Distributed Network (Parameter Optimization, data rates Scheduler, Demand Matched Implementation Configuration) Enhancements) Software upgrade that benefits existing and new devices 10
  11. 11. Smart Networks Exploit Typically Unevenly Loaded Networks Network loading continuously changes with time and location Fully loaded sectors are usually surrounded by lightly loaded neighbors Heavy Load Medium Load Light Load 11
  12. 12. Smart Networks Increase Network Capacity and User Experience, Where & When Needed Can double network capacity and cell-edge data rates Network Load Balancing Demand Matched Configuration* Utilizing unused capacity of lightly loaded neighbors Reducing interference by lowering tx power to match load High Load Low Load Distributed Network Scheduler Single Carrier Multi-Link Users preferentially served by carriers that maximize capacity Leveraging multicarrier devices in single-carrier networks Carrier # 2 Carrier# 1 Improvement depends on deployment, demand distribution and implementation. Apart from the above, Smart Carrier Management is also a Smart 12 Network technique; *Also known as Adaptive Frequency Reuse
  13. 13. Network Load Balancing Utilizes Unused Capacity of Lightly Loaded Neighbors Users in highly loaded cells served better when offloaded to lightly loaded neighbors Example: Today User data rate DO Advanced 2X X Today DO Advanced (Connected to (Offloaded to loaded cell) neighbor cell) Loading assumed: Loaded cell- 80%; Neighbor cell- 20% High Load Low Load Improved data rates for Higher overall network Reduced backhaul both offloaded users capacity bottle-necks and users in loaded cell 13
  14. 14. Demand Matched Configuration Reduces Interference to Increase Capacity Interference reduction by adjusting transmit power of lightly loaded cells Carrier# 2 - Tx power (coverage) reduced for cells with lower demand. Results in better utilization of High Load surrounding cells Low Load Carrier# 1 – Always at full Tx power (fixed coverage) 14
  15. 15. Distributed Network Scheduler Maximizes Capacity by Prioritizing Carriers to Users Increased overall capacity and cell-edge data rates, especially in hotspots Today’s Networks DO Advanced All users served by all carriers User served by most suitable carrier/s Larger coverage area of Carrier #2 because of lower interference Carrier # 2 Cell-edge users served by Carrier #2 Carrier# 1 Users closer to BTS are 2.4 2.4 served by Carrier #1 Mbps Mbps Example: 1.2 0.7 Mbps User Data Rates Mbps Cell-edge User Cell-edge User user close to BTS user close to BTS 15
  16. 16. Leveraging Multicarrier Devices in Single- Carrier Networks Single Carrier Multi-Link connects multicarrier devices to two single-carrier cells Carrier # 1 Carrier# 1 Multicarrier Device Higher cell-edge data Even better network Higher overall network rates, especially for load balancing capacity multicarrier devices 16
  17. 17. DO Advanced Performance Improvement - Example Sample Cluster with Uneven Load Improved Performance during Highly Loaded Condition 1.5 1 0.5 Dist. in km 0 -0.5 -1 -1.5 -1 -0.5 0 0.5 1 Dist. in km Relative Sector Load: x 2x Note: The performance shown is for users in the central cells (with 2x load) . The increase depends on deployment, demand distribution and implementation. 17 Only smart networks gains considered
  18. 18. DO Advance Optimizes Performance of Heterogeneous Networks  DO Advanced techniques applied to networks with microcells, picocells, etc. Network Capacity (DL) 3.3X 1.7X Macro (1 Carrier) Pico cell X (2 carrier) Macro Macro DO Advanced Example: Improvement with DO Advanced Pico cell deployment + (Macro + Pico) Pico Source: Qualcomm simulations. assumes 1 single carrier macro, with 2 double carrier picocells. Pico-cells are 18 randomly placed in the network. The data loading ratio of 4:1 between high-demand and low-demand areas
  19. 19. Upgrade Software Released; Standards Published Firmware for CSM6800 Released Standard Published in Aug 2010 in April 2010  Includes most of the Smart Networks features CSM  Network Load Balancing 6800  Distributed Network Scheduler  3GPP2’ s EV-DO Rev.C released in April 2010 contains  Major components of Demand all the core DO Advanced Matched Configuration features  Support for CSM6850 and full feature set expected EOY 2010  Active participation and contributions form many 3GPP2 ecosystem stakeholders Paving the way for DO Advanced commercial deployments Note 3GPP2 EV-DO Rev.C standard contains many more features that are not included in DO Advanced, such as MIMO. 19
  20. 20. Enhanced Connection Management: Improved Connection-Capacity and User Experience Enhanced Connection Management Higher Connection - Better user Experience Capacity  Supports more interactive users  Improved “Always ON” experience such as “push-pull” mobile email  Improved battery life  Efficient use of paging and access channels  Better user experience even during congestion  Better traffic congestion management 20
  21. 21. Advanced Devices Improve Performance without Standards or Infrastructure Impact  Enhanced Equalizer exploits uneven loading and bursty traffic Higher DL Cell-Edge Data Rates1 Higher DL Sector Capacity ~25% ~20% ~45% ~10% 0.5km ~25% site-to-site 1.5km dist. site-to-site dist. Full Typical Low Load in Neighboring Sectors Higher gains for Dense Urban Sites Higher gains for lower loading in (short site-to-site distance) neighboring sectors2 1Assumes ~50% loading , the worst 10 percentile considered as cell-edge users; 2 Represents neighbor transmit probability, Full – 100%, Typical 25%, Low 5% ; Other simulation assumptions - 3GPP2 methodology and channel mix, RoT/Effective RoT = 6dB, realistic Tx antenna modeling (handheld device model, laptop model) EV-DO Rev.A/B packet formats. 21
  22. 22. Mobile Tx Diversity Improves both Uplink and Downlink Performance Higher UL Sector Capacity Higher UL Cell-Edge Rates ~110% ~30% ~80% ~20% Mobile Tx D Mobile TxD Mobile TxD Mobile TxD w/o BTS IC w/ BTS IC w/o BTS IC w/ BTS IC Increase in UL data rates improves DL performance for bursty apps (web browsing) BTS IC further improves the gains of Mobile Tx Diversity Closed loop tx diversity will need infrastructure upgrade and a new standard, but open loop does not; The worst 10 percentile considered as cell-edge users; ; Other simulation assumptions - 3GPP2 methodology and channel mix, RoT/Effective RoT = 6dB, realistic Tx antenna modeling (handheld device model, laptop model) EV-DO 22 Rev.A/B packet formats, ant. model with 0% correlation between two pairs of ant. and 50% correlation within each pair (for tx diversity simulations).
  23. 23. DO Advanced: Maximizing the Performance of EV-DO Higher Network Capacity and Improved User Experience D When and where needed O A Benefits Existing Devices Even better performance for new devices d v a n Cost-Effective Software Upgrade c e d Software Released; Standards Published CSM6800 firmware released in August 2010; Standard published in April 2010 23
  24. 24. Questions? Connect with Us @qualcomm_tech /contributors/prakash-sangam 24
  25. 25. Q&A 25
  26. 26. Thank You • Thank you for joining us at this FierceLive! Webinar! • This webinar has been recorded and will be available on- demand within 24 hours. You will receive a notice when the recording is up. • Thank you for joining us! Sponsor: