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HSPA+ Carrier Aggregation Evolution
 

HSPA+ Carrier Aggregation Evolution

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Carrier aggregation brings higher data rates, higher capacity for bursty applications such as browsing, and an enhanced broadband experience for all users. HSPA+ commercialized the first step, ...

Carrier aggregation brings higher data rates, higher capacity for bursty applications such as browsing, and an enhanced broadband experience for all users. HSPA+ commercialized the first step, aggregation across two carriers (aka dual-carrier) back in 2010, as part of Rel. 8. Carrier aggregation has been evolving since then, bringing it to the uplink, more carriers in the downlink, more bands, aggregation with unpaired spectrum and more.

For more information please visit http://www.qualcomm.com/solutions/wireless-networks/technologies/hspa-plus-carrier-aggregation

Download the presentation here: http://www.qualcomm.com/media/documents/hspa-carrier-aggregation-evolution

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    HSPA+ Carrier Aggregation Evolution HSPA+ Carrier Aggregation Evolution Presentation Transcript

    • 1 Evolution of HSPA+ Carrier Aggregation May 2014
    • 2 Carrier aggregation enhances broadband experience All users in the cell improved with higher data rates and lower latencies Evolving to leverage all spectrum assets Aggregation across bands, across carriers (multiflow), more carriers, and uplink, HSPA+ carrier aggregation evolution Benefits HetNets—even better with multiflow Multiflow evolves carrier aggregation to across cells 1 2 3 4 HSPA+ 5MHz CARRIERS Carrier#1 Carrier#4 Carrier#2 Carrier#3 AGGREGATED DATA PIPEExpanded chipset support for carrier aggregation Carrier aggregation across bands, uplink and beyond two carriers
    • 3 HSPA+ Dual-carrier is main-stream Supporting 42 Mbps downlink peak data rate Deployment of 42 Mbps DC-HSPA+ technology continues as the major trend in 2014 – GSA, Mar 2014 160NETWORKS 83COUNTRIES Countries launched/committed to Dual-carrier Source: www.gsacom.com , Feb 2014
    • 4 Dual-carrier – Delivering high data rates in real networks >5Mbps >50% Source: Signals Research Group Signals Ahead, September 2011, “The Mother of all Network Benchmark Tests” 0 – 0.25Mbps 8.6% 0.25 – 0.5Mbps 4.8% 0.5 – 1Mbps 8.1% 1 – 1.5Mbps 6.5% 1.5 – 2Mbps 4.6% 2 – 2.5Mbps 3.8% 2.5 – 5Mbps 11.4%5 – 7.5Mbps 9.9% 7.5 – 10Mbps 8.8% 10 – 12.5Mbps 8.7% 12.5 – 15Mbps 10.6% 15 – 20Mbps 14.1% >1Mbps ~80% USER DATA RATE OF THE TIME Based on comprehensive benchmarking drive tests conducted across two operators in greater Dallas area (Texas), covering more than 23 miles, downloading nearly 7GB of data USER DATA RATE OF THE TIME
    • 5 HSPA+ Carrier aggregation expanding reach Leveraging all spectrum assets Across Bands HIGH BAND (e.g Band I & II) LOW BAND (e.g Band V, VII & VIII) PAIRED SPECTRUM UNPAIRED SPECTRUMUplink More Carriers DUAL-CARRIER NOW & COUNTING4 Aggregated Data Pipe AGGREGATION ACROSS CELLS5 Multiflow Supplemental Downlink ULDL DL   3GPP continually defines new band combinations 1-3 carriers in the high band, and 1-2 in the low band2 1Defined in Rel 9; 2 Originally defined in Rel 9, more carriers and combinations added in Rel 11; 3Defined in Rel 9, band combinations being defined by 3GPP; 4Dual-carrier in Rel 8, 4-carrier in Rel 10, and 8-carriers in Rel11; Defined in Rel 11 Combining unpaired spectrum with the downlink 3 DUAL-CARRIER IN THE UPLINK1
    • 6 63 Mbps in 2015 42 Mbps Commercial 84 Mbps Future Carrier aggregation enhances user experience 2x CA Carrier 3 Carrier 2 Carrier 1 3x CA Carrier 4 4x CA Increased data rates for all users Leverages all spectrum assets Can double smartphone bursty data capacity2 Up to 20 MHz 2 For typical bursty applications and typical partial carrier load, carrier aggregation supports more bursty application users than individual single carriers.
    • 7 User data rates increase with bandwidth—all users improved* Best Users (10% percentile) Median Users Cell Edge Users R10 Carrier aggregation (4X) R8 Carrier aggregation (Dual-Carrier 2X) Single Carrier (Same number of users per carrier, for fair comparison user data rate experienced during a burst) 1.4 Mbps 2.8 Mbps 4.8 Mbps3.3 Mbps 6.6 Mbps 11.7 Mbps 6.5 Mbps 24 Mbps 12.7 Mbps * Not only users with carrier aggregation devices in the cell (as shown in the chart) see improved performance but also users with legacy devices (not shown in the chart) because the former will free-up resources if the total traffic remains the same Qualcomm simulations. Each scenario is based on the same total number of users (eight users) per carrier. Shows the burst data rate for the 10% best users , the median users and the 10% worst (cell edge) users. MIMO with Carrier aggregations part of R9 and R10, but MIMO has not been considered in this simulation.
    • 8 Carrier aggregation combinations—standard progress 3GPP R12 expected to be completed toward the end of 2014 Dual-band, Dual carrier Dual-band, 4 carrier Non-contiguous, 4 carrier Supplemental downlink Approved bands (up to R11) I + VIII II + IV I + V I + XI II + V Approved bands (up to R11) I + VIII II+ IV I + V II + V Approved bands (up to R11) 2.1 GHz (Band I) 5 & 10 MHz gap between blocks, depending on configuration 2.1 GHz (AWS - Band IV) 5, 10, 15, 20, & 25 MHz gap between blocks, depending on configuration Targeted for R12 2.1 GHz (Band I) – Anchor + 1.4 GHz (Band XXXII) – Downlink Band I – 2.1 GHz; Band II – 1900 MHz; Band IV – 2.1GHz (AWS); Band V – 850 MHz; Band VIII – 900 MHz; Band XI – 1500 MHz; Band XXXII – 1.4 GHz (L-Band)
    • 9 Brining benefits of dual-carrier to uplink Addressing the needs of today’s smartphones and media sharing (e.g. photo and video uploads) 0 2 4 6 8 10 0 10 20 30 40 50 60 70 HSPA+ Dual-Carrier (10 MHz) 2 Single carriers (10 MHz) Capacity (Number of Bursty Application Users)DownlinkBurstDataRate(Mbps) Fully loaded carriers Partially loaded carriers Doubles Burst Rate1 Capacity Gain —Can exceed 2x Higher Uplink data rates Higher uplink capacity for bursty apps (Similar to downlink) 23Mbps (peak) Uplink Carrier #1 Uplink Carrier #2 10 MHz
    • 10 Leveraging unpaired spectrum with supplemental downlink Boosts downlink capacity F1 UplinkDownlink Aggregated Fatter data pipe FDD Paired (Downlink) FDD Paired (Uplink) Unpaired (Supplemental Downlink) 1 L-Band in Europe: 1452 MHz to 1492 MHz, sometimes referred to as 1.4GHz or 1.5GHz spectrum. 2 Aggregation across bands is supported in HSPA+ R9 for two downlink carriers, but each specific band combination, e.g. combination of band 1 and L-band, has to be defined in 3GPP. 3 subject to timely completion of standard with reasonable technical specifications L-Band 1.4GHz (Band XXXII) Harmonized in Europe1 L-Band has 40 MHz of idle unpaired spectrum available 2 3GPP specs expected in Jun 20142 Chipsets planned for commercial devices in 20153
    • 11 Multiflow - carrier aggregation across cells Enabling carrier aggregation in all deployments Bringing benefits of dual-carrier to single–frequency deployments Higher cell-edge data rates Higher network capacityBetter network load balancing Bringing benefits of carrier aggregation to multi-frequency deployments1 1With the evolution to supporting 4 carrier aggregation, multiflow can aggregate up to 3 carriers from one site/cell and one carrier from the other cells in the future
    • 12 Multiflow Improves cell-edge data rates and network capacity 1X 1.2X 1.4X Dual-carrier 3-Carrier Aggregation 4-Carrier Aggregation Burst data rates Higher cell-edge data rates 1X 1.5X 1.7X Dual-carrier 3-Carrier Aggregation 4-Carrier Aggregation Burst data rates Higher network capacity Assumptions: 57 cell wrap around with 1km Inter-site distance (ISD). Receiver type LMMSE, Rx Diversity. Traffic model: 3GPP bursty source with 1 Mb burst, exponential inter-arrival with 5s mean. Power allocation: 30% total overhead power (incl. 10% of C-PICH). Antenna pattern: 2D with 70deg 3dB beam width. Channel Model: PA3. HS-DPCCH Decoding: For Intra-NB, at Node-B with soft combining. For inter-NB, at both NodeBs.
    • 13 HSPA+ hetnet range expansion leverages carrier aggregation Enabling features: reduced power on second macro carrier , dual carrier devices (or dual frequency Multiflow), and mitigating uplink and downlink imbalance (3dB Cell-individual offset (CIO) and pico noise-figure pad) Small cell better utilized All users improvedMacro offloaded Dual-carrier Devices Range Expansion Carrier 2 Carrier 1 Macro Small cell Reduce second carrier Macro Power (F2)
    • 14 Expanded HSPA+ carrier chipset aggregation support Aggregation of 3 downlink carriers uses HSPA+ assets more efficiently Uplink aggregation (2 carriers) improves user experience and increase network capacity for smartphone traffic Aggregation across bands (2 carriers) takes advantage of expanding HSPA+ footprint in new bands (e.g. 900 MHz) 800 LTE CA HSPA+ CA MDM 9x25 LTE CA (cat 4) HSPA+ CA Common platform for LTE and HSPA+ carrier aggregation 9x35 LTE CA (cat 6) HSPA+ CA Qualcomm Snapdragon and Gobi are products of Qualcomm Technologies, Inc. ; Snapdragon 800 includes 8974 Small cell better utilized All users improvedMacro offloaded
    • 15 Four carrier multiflow demo at MWC 2014 Aggregating across four cells (and two frequencies) Better network load balancingImproved cell-edge performance Bringing 4-carrier benefits to dual-carrier deployments
    • 16 Carrier aggregation enhances broadband experience All users in the cell improved with higher data rates and lower latencies Evolving to leverage all spectrum assets Aggregation across bands, across carriers (multiflow), more carriers, and uplink, HSPA+ carrier aggregation evolution Benefits HetNets—even better with multiflow Multiflow evolves carrier aggregation to across cells 1 2 3 4 HSPA+ 5MHz CARRIERS Carrier#1 Carrier#4 Carrier#2 Carrier#3 AGGREGATED DATA PIPEExpanded chipset support for carrier aggregation Carrier aggregation across bands, uplink and beyond two carriers
    • 17 @Qualcomm_tech http://www.qualcomm.com/blog/contributors/prakash-sangam http://www.slideshare.net/qualcommwirelessevolution http://storify.com/qualcomm_tech http://www.youtube.com/playlist?list=PL8AD95E4F585237C1&feature=plcp www.qualcomm.com/technology Questions? - Connect with Us BLOG
    • 18 For more information on Qualcomm, visit us at: www.qualcomm.com & www.qualcomm.com/blog © 2013 QUALCOMM Incorporated and/or its subsidiaries. All Rights Reserved. Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries. Other products and brand names may be trademarks or registered trademarks of their respective owners. References in this presentation to “Qualcomm” may mean Qualcomm Incorporated, Qualcomm Technologies, Inc., and/or other subsidiaries or business units within the Qualcomm corporate structure, as applicable. Qualcomm Incorporated includes Qualcomm’s licensing business, QTL, and the vast majority of its patent portfolio. Qualcomm Technologies, Inc., a wholly-owned subsidiary of Qualcomm Incorporated, operates, along with its subsidiaries, substantially all of Qualcomm’s engineering, research and development functions, and substantially all of its product and services businesses, including its semiconductor business, QCT. Thank you Follow us on: