Extending the Benefits of LTE to Unlicensed...
Transcript of Extending the Benefits of LTE to Unlicensed...
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Neville Meijers VP, Business Development Qualcomm Technologies, Inc.
Extending the Benefits of LTE to Unlicensed Spectrum
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Making the best use of licensed and unlicensed spectrum
More licensed spectrum is the top priorityUse unlicensed spectrum opportunistically
Technologies for hyper-densificationMore small cells
Higher efficiency
More spectrum
For both licensed & unlicensed spectrum
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Multiple technologies will co-exist for best use of all spectrum
LTE AdvancedLicensed spectrum foundation, augmented
with unlicensed spectrum solutions
Mobile broadband services for best performance and quality-of-experience
LTE UnlicensedLTE-based technologies in unlicensed
spectrum, LTE-U, LAA, MuLTEfire™
Broadens LTE ecosystem to enhanced and new deployment opportunities
Wi-Fi 802.11ac/ad/ax802.11-based technology solely operating
in unlicensed spectrum
Also evolving for enhanced performance and expanding to new usage models
LTE Unlicensed: LTE-U/LAA aggregation with an LTE licensed spectrum anchor, whereas MuLTEfire can operate solely in unlicensed spectrum MuLTEfire is an initiative of Qualcomm Technologies, Inc.
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Video—Extending LTE to unlicensed spectrum
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LTE Unlicensed in 5 GHz for new small cell deployments
1Assumptions: Two operators. 48 Pico+108 Femto cells per operator. 300 users per operator with 70% indoor. 3GPP Bursty model. 12x40MHz @ 5GHz for unlicensed spectrum; LTE 10 MHz channel at 2 GHz;. 2x2 MIMO, Rank 1 transmission, eICIC enabled; LTE-U – LAA R13, 2x2 MIMO (no MU-MIMO).; Wi-Fi - 802.11ac 2x2 MIMO (no MU-MIMO), LDPC codes and 256QAM).
LTE Unlicensed small cell
Unlicensed(5 GHz)
LTE <E-U/LAA
~2x capacity and rangeCompared to Wi-Fi1
Enhanced user experienceLicensed anchor for control and mobility
Single unified LTE networkCommon management
A good Wi-Fi neighbor In many cases, better neighbor to Wi-Fi than Wi-Fi itself
Carrier aggregation
Licensed Anchor(400 MHz – 3.8 GHz)
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Extending the benefits of LTE to unlicensed spectrum
1 Downlink only in unlicensed spectrum (SDL). RF specs and coexistence tests defined by LTE-U forum: coexistence and fair sharing can be obtained using techniques such as channel selection and CSAT (Carrier Sensing Adaptive Transmission). 2 These regions mandate specific access procedures, including Listen Before Talk (LBT),. LAA R14 targets enhancements to support aggregation for both uplink and downlink
MuLTEfireBroadening LTE technology and ecosystem to new deployment opportunities
Licensed SpectrumExclusive use
Unlicensed SpectrumShared use
LAA (Licensed-Assisted Access)Targeting mobile operator deployments in Europe, Japan, and beyond2 based on 3GPP Rel. 13 and beyond
LTE Carrier Aggregation with licensed anchor channel
LTE-based technology
without licensed anchor channel
LTE-U1 to boost downlink Targeting mobile operators deployments in USA, Korea, India, etc. based on 3GPP Rel. 10/11/12
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LinkAggregation
Aggregation with licensed spectrum provides best performance
LTE - Wi-Fi Link Aggregation (LWA) for carrier Wi-Fi deployments1
Mobile operator’s LTE anchor spectrum
LTE in unlicensed (LTE-U/LAA) for new small cell deployments
Licensed 400MHz to 3.8GHz
Carrier Aggregation
Wi-Fi in Unlicensed2.4 & 5 GHz
LTE in Unlicensed
5 GHz
Enhanced user experience
Better capacity and coverage
Unified network
Fair coexistence
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Unlicensed (5 GHz) Carrier aggregationLicensed Anchor
LTE
LTELTE/LTE-U
FSM9955
Industry’s first commercially announced LTE-U small cell solution
Industry’s first commercially announced
UE solution for LTE-U
WTR3950
WTR3925
X12 LTE
Converged SOC with CSAT (R 10) based LTE/Wi-Fi fair
coexistence
X12 LTE supporting LTE-U with WTR 3950
Qualcomm Snapdragon, WTR RF transceiver chips and FSM small cell solutions are products of Qualcomm Technologies, Inc.
Spearheading LTE-U commercialization
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Ease of deployment and management
FSM9955
FSM9955 brings LTE-U to small cellsFor LTE-U anticipated commercial launches in 2016
FSM small cell solutions and UltraSON are products of Qualcomm Technologies, Inc.. 1 eICIC is enhanced Inter Cell Interference Coordination defined by 3GPP.
Foundation: 3G, LTE
Hosted: Wi-Fi 802.11ac
Announced: LTE-U
Converged multi-mode SoC
UltraSON™ elCIC1
Hotspot 2.0
CSAT
Pico/Enterprises Venues
Residential / Neighborhood
Supports the gamut of deployment scenarios
• An industry leader in RF, power management, security
• Dedicated network listen—across technologies• LTE Unlicensed / Wi-Fi coexistence – like CSAT
• UltraSON™ technology interference and mobility management
• Advanced interference management like eICIC
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LTE Unlicensed Demo ShowcaseSee the benefits of LTE-U in action with three distinct demos
FSM99xx
LTE-U PerformanceLive demonstration of LTE-U Performance using commercial Qualcomm Technologies silicon
LTE-U/Wi-Fi Coexistence See LTE-U and Wi-Fi fairly sharing spectrum first hand
License Assisted Access (LAA)Learn how LAA brings together the best of licensed and unlicensed via our LAA Video Demo
Demos Featuring Qualcomm Technologies Platform Solutions
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Unlicensed 5 GHz spectrum ideal for small cells LTE-U, LAA, MuLTEfire, Wi-Fi (802.11ac/ax) will coexist to meet various needs
Pico/Enterprises
Residential / NeighborhoodSmall Businesses
Venues
Opportunistic useShared spectrum but ‘free’, technology neutral
Large amount of spectrumCould be ~500MHz but regionally dependent
Shorter range Lower transmit power per regulations
Wide bands available for sharing Efficiently shared amongst multiple users
12LTE Unlicensed Solutions Carrier Wi-Fi Solutions
LTE/Wi-Fi Technology SolutionsLTE in Licensed SpectrumLTE in Unlicensed Spectrum802.11ac Wi-Fi802.11ad (60Ghz)
LTE advanced Carrier Aggregation
LTE-U/LAAaggregation
LTE/Wi-Fi Call Continuity
802.11ai Fast Roaming
Carrier Wi-Fi AP
LTE/Wi-Fi Link Aggregation
802.11ac/ad
Small Cell
Multiple technologies to support all deployment scenarios
Dual-connectivityMuLTEfireNeutral host
offload
802.11ac MU-MIMO
LTE/Wi-Fiaccess
Wi-Fiaccess
802.11ac/ad
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Fair Wi-Fi coexistence a key principle in LTE unlicensed designExtensive over-the-air testing performed in the lab and in the field
Assump&ons: Two operators. 48 Pico+108 Femto cells per operator. 300 users per operator with 70% indoor. 3GPP Bursty model. 12x40MHz @ 5GHz for unlicensed spectrum.LTE 10 MHz channel at 2 GHz;. 2x2 MIMO, Rank 1 transmission, eICIC enabled; LTE-‐U -‐ Phase II., 2x2 MIMO (no MU-‐MIMO).; Wi-‐Fi -‐ 802.11ac 2x2 MIMO (no MU-‐MIMO), LDPC codes and 256QAM).
OperatorA
Wi-Fi
OperatorA
Wi-Fi
1x ≥1x
>2x
Gain(Median throughput)
OperatorB
Wi-Fi
1x
In many cases a better neighbor to Wi-Fi than Wi-Fi itself
Operator B switches Wi-Fi to LTE in unlicensed
OperatorB
LTE in unlicensed
14Source: Qualcomm Research. Example from our LTE Unlicensed testing in San Diego to validate coverage and performance advantages.
LTE Thrpt (Mbps) / Wi-Fi Thrpt (Mbps)
LTE Unlicensed improves coverage compared to Wi-Fi20/2
16/2
3/x
6/x
4/x
24 /26
27/27
35/27
15 /9
9/1
14 /3
26/23
2/x29/16
LTE / Wi-Fi5GHz access pointIndoor 3rd floor
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Implementation variation among Enterprise Wi-Fi vendorsUsing Qualcomm Technologies’ LTE/Wi-Fi coexistence test chamber
Vendor A and B enterprise grade Wi-Fi APs with controller. 8 Aps with test AP—Wi-Fi or LTE-U
Baseline:8 Wi-Fi + Wi-Fi
Stress Test:8 Wi-Fi + LTE-U
Vendor A
Vendor B
Wi-Fi vendor A less aggressive
Wi-Fi vendor B more aggressive
Mixture of Vendor A and B’s enterprise Wi-Fi APs
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LTE-U is a good neighbor regardless of Wi-Fi vendorUsing Qualcomm Technologies’ LTE/Wi-Fi coexistence test chamber
Vendor A and B enterprise grade Wi-Fi APs with controller. 8 Aps with test AP—Wi-Fi or LTE-U
Vendor A
Vendor B
Mix of vendor A/B
LTE-U maintains overall Wi-Fi performance
8 Wi-Fi + Wi-Fi 6.5
8 Wi-Fi + LTE-U 6.5
8 Wi-Fi + LTE-U
8 Wi-Fi + Wi-Fi 3.9
4.9
8 Wi-Fi + LTE-U
8 Wi-Fi + Wi-Fi 5.8
5.8
Average Wi-Fi throughput (Mbps)
or
with
Wi-Fi LTE-U
Wi-Fi
8X
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All sitesLTE + Wi-Fi
LAA Rel. 13 Live Demo
Operator 1
Operator 2
Note: The data rates shown are only for the unlicensed spectrum, with only control and signaling traffic going over licensed spectrum
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Operator 1: still on Wii-Fi
Wi-Fi performance not adversely
affected
LAA Rel. 13 Live Demo
Operator 1
Operator 2
Operator 2: One site changed to LTE Unlicensed ~ 2x Improvement
Note: The data rates shown are only for the unlicensed spectrum, with only control and signaling traffic going over licensed spectrum
LAA LAA
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Going above and beyond minimum requirementsMinimum requirements
Ensuring fair coexistence between LTE unlicensed and Wi-FiWorking together across the mobile and Wi-Fi industries
1 With dynamic channel selection and CSAT - Carrier Sensing Adaptive Transmission required in the small cell.. 2 LAA Licensed Assisted Access, Work item approved in 3GPP R13 June 15. In addition, New RF band support (e.g. 5GHz) needed at both device and small cell
Conformance testing
• Coexistence and fairness test
• Expected to be more rigorous than Wi-Fi testing today
• Still allowing for differentiation
• Example: LTE-U forum specifications
Standards & specifications
• LTE-U for USA, Korea, India, other markets based on LTE R10/11/121
• LAA for Europe, Japan and beyond defined in 3GPP R132
Spectrum regulations
• Power, bandwidth and emission levels
• Additional channel occupancy limits: specific access procedures required in Europe and Japan (LAA)
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LTE Unlicensed development through industry collaboration
Fair co-existence between Wi-Fi and LTE unlicensed
LTE Unlicensed Wi-Fi
Collaboration and engagement
3GPP LAALTE-U Forum
• Dialogue between 3GPP and IEEE802.11 & WFA throughout the LAA standard’s development via presentations & liaison statements
• Open industry LAA workshop held 8/29/2015 in Beijing with presentations from IEEE 802.11, WFA and other key stakeholders
• Started dialogue between 3GPP and WFA on coexistence testing
Founding members Alcatel-Lucent, Ericsson, LGE, Qualcomm Technologies, Inc., Samsung, Verizon all have stakes in LTE and Wi-FiCoexistence specs published March 2nd 2015, updated June based on feedback, e.g. adding uplink and VoIP test cases
Being standardized in 3GPP release 13 for completion 1H 2016 (ASN.1 freeze)Enhancements planned for release R14 and beyond3GPP will develop coexistence / performance requirements and tests
• Presented LTE-U to Wi-Fi Alliance and IEEE at standards meetings• An LTE-U workshop for key cellular and Wi-Fi vendors/operators
was held on May 28, 2015 with deep dive of technology• Further collaboration on coexistence with industry is ongoing—
one-on-one and in industry groups
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MuLTEfire for 5 GHz unlicensed spectrum—no licensed anchor
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MuLTEfire: LTE-like performance with Wi-Fi-like simplicityLTE-based technology for unlicensed spectrum without licensed anchor channel
Broadens LTE technology & ecosystem to new deployment opportunities
4G LTE-like performanceEnhanced capacity and range
Improved mobility, quality-of-experience
Hyper-dense, self-optimizing deployments
Wi-Fi-like deployment simplicityOperates in unlicensed spectrum
Leaner, self-contained network architecture
Suitable for neutral host deploymentsHarmoniously coexist with
Wi-Fi, LTE-U/LAA
MuLTEfire
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MuLTEfire expands small cell deployment opportunitiesDeployments as a single access node, hotspot, or bigger clusters with mobility
Enterprises
Residential / NeighborhoodSmall Businesses
Venues
Self-containedSimplified network architecture
suitable for end-user deployments
Unlicensed SpectrumOperates solely in unlicensed spectrum
without licensed anchor channel
Neutral hostAny deployment can service any
device—no SIM required
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Extending the Benefits of LTE to Unlicensed Spectrum
Committed to LTE Unlicensed, the Wi-Fi evolution, and LTE – Wi-Fi convergence solutions
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LTE Unlicensed coexists fairly with Wi-Fi—in many cases a better neighbor than Wi-Fi itself
Wi-FiLTE
3Wi-Fi 802.11ac/ad/ax
MuLTEfire™LTE-U/LAA
1Multiple solutions will coexist to meet needs of various deployment scenarios
Aggregation with licensed spectrum for best performance: • LTE-U/LAA carrier aggregation• LTE - Wi-Fi link aggregation
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For more information, visit us at: www.qualcomm.com & www.qualcomm.com/blog
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Qualcomm, Snapdragon, FSM and UltraSON are trademarks of Qualcomm Incorporated, registered in the United States and other countries. MuLTEfire is a trademark of Qualcomm Incorporated. Other product 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.
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