lte world summit 2010
DESCRIPTION
TRANSCRIPT
du outdoor Mesh-WiFi
du WiFi Hotspots
du Pre-WiMAX Point-to-Point & Point-to
-MultipointLinks to Site Offices
du WiMAX network for the Dubai Metro*
du Fixed network Services
du UAE Nationwide Mobile Network
Mobile Broadband
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* Winner of 2009 most innovative mobility project by Cisco Networkers event
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Source: QUALCOMM white paper “HSPA+ for Enhanced Mobile Broadband”
2010 2011 2009 2012+ Note: Estimated commercial dates
DL: 28 Mbps UL: 11 Mbps
DL: 42 Mbps1
UL: 11 Mbps DL: 84 Mbps2
UL: 23 Mbps2 DL: 1.8-14.4 Mbps
UL: 5.7 Mbps
2x data capacity >2x voice capacity
Broadband downloads and uploads, QoS
Multicarrier- 2x data rates to all
20 MHz deployments
Multicarrier enhancements
DL: 100+ Mbps3
UL: 23+ Mbps
1R8 will reach 42 Mbps by combining 2x2 MIMO and HOM (64QAM) in 5 MHz, or by utilizing HOM (64QAM) and multicarrier in 10 MHz. 2R9 combines multicarrier and MIMO in 10 MHz to reach 84 Mbps peak rates. Uplink multicarrier double the uplink peak data rate to 23 Mbps.
3Releases beyond R9 may expand multicarrier to 20 MHz and utilize combinations of multicarrier and MIMO to reach data rates exceeding 100 Mbps.
Created 06/10/09
Rel-7 Rel-8 Rel-9 Beyond Rel-9 Rel-6 (HSUPA)
Rel-99 Rel-5 (HSDPA)
HSPA HSPA+ (HSPA Evolved) WCDMA
HSDPA
Single Carrier – 5MHz Dual Carrier – 10MHz
HSPA+ Improves Peak Rates while providing Higher QoS and Customer Loyalty
14.4M
21M
28M
42M
28M
42M
56M
84M
64QAM MIMO 64QAM+MIMO DC DC+64QAM DC+MIMO DC+MIMO+64QAM
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Choice depends on available frequency, operator’s strategy and terminal’s maturity.
Step
3
HSDPA 42 M 64QAM + MIMO
HSDPA 21M 64QAM
HSDPA 14.4
Option A Option B
Step
1
Step
2
HSDPA 42M 64QAM + MIMO
HSDPA 28M MIMO
HSDPA 84M DC + 64QAM + MIMO
HSDPA 7.2
HSDPA 21M 64QAM
HSDPA 42M 64QAM + DC
Option C
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Data stream 1
Data stream 2
MIMO has better throughput gains close to Node-B & cell centre. �
Double throughput by using double streams per User Only need 1 carrier frequency
R5 HSDPA R7 MIMO
2x2 MIMO 14.4Mbps
28.8Mbps
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Anchor Carrier Frequency 1
Supplementary Carrier Frequency 2
Dual cells covers the same geographical area
Downlink peak rate double 28.8M/42Mbps
5MHz 5MHz
frequencey1 frequencey2 f
Two frequencies are adjacent
Use 2 adjacent carriers to transmit simultaneously data to
the same user
Full use of the two cells resource by Joint Scheduling and Load Balance �
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Criteria/Evolution DC MIMO Peak Rate 42Mbps in 10Mhz band 42Mbps in 5Mz band
Coverage Performance Better --
Throughput Performance -- Better
Latency Performance Better --
Service Type (Full Buffer) -- Better
Service Type (Burst) Better --
CAPEX Investment Low High
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Notes: 1) PA3 and macro cell modes are supposed. 2) Users are uniformly distributed. 2) As can be observed, the DC gain is more pronounced at low load (25% at 2 users/sector) compared to high load (7% at 16 users/sector).
3) DC improvement comes from frequency diversity and better statistical multiplexing
The throughput gain of DC will fast decrease with the cell users increasing
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Source of first graph: R1-082094, “Text proposal for TR on simulation results” (initial submission), Qualcomm Europe, 3GPP TSG-RAN WG1 #53bis, May 2008.
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Cell Radius Dense Urban Urban Suburb Rural
MIMO+64QAM 0.33 0.5 1.7 3.9 DC+64QAM 0.43 0.63 2.2 5.3
Remark: Cell edge throughput 1024kbps
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Source: du’s Partner Simulation
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Instantaneous down/up link peak data rates of at least 100/50 Mbps within 20 MHz allocation, respectively.
Down/up link: average user throughput per MHz, (3-4)/(2-3) times Release 6 HS(D/U)PA, respectively.
Mobility shall be maintained at speeds 120km/h-350km/h (or even up to 500 km/h depending on the frequency band)
Spectrum flexibility: scalable to operate in 1.4, 2.5, 5, 10, 15 and 20Mhz allocations: Uplink and downlink, paired (FDD mode) and unpaired (TDD mode)
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Source: GSA “Evolution to LTE - an overview, December 2009
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Source: QUALCOMM white paper “LTE release 8 and beyond”
2010 2011 2009 2012+ Note: Estimated commercial dates
Leverages new, wider and TDD spectrum
DL: 73 – 150 Mbps3
UL: 36 – 75 Mbps3
(10 MHz – 20 MHz)
DL: 28 Mbps UL: 11 Mbps
DL: 42 Mbps1
UL: 11 Mbps DL: 84 Mbps2
UL: 23 Mbps2
(10 MHz )
DL: 1.8-14.4 Mbps UL: 5.7 Mbps
2x data capacity >2x voice capacity
Broadband downloads and uploads, QoS
Multicarrier- 2x data rates to all
20 MHz deployments
Multicarrier enhancements
DL: 100+ Mbps3
UL: 23+ Mbps (10 MHz )
Created 08/18/09
1 R8 will reach 42 Mbps by combining 2x2 MIMO and HOM (64QAM) in 5MHz, or by utilizing HOM (64QAM) and multi carrier in 10 MHz.
2 R9 and beyond may utilize combinations of multi carrier and MIMO to reach 84 Mbps peak rates. Similarly, uplink multi carrier can double the uplink data rates.
3 Peak rates for 10 and 20 MHz FDD using 2x2 MIMO, standard supports 4x4 MIMO enabling peak rates of 300 Mbps. TDD rates are a function of up/downlink asymmetry
4Peak rates can reach or exceed 300 Mbps by aggregating multiple 20 MHz carriers as considered for LTE Advanced (LTE Rel-10).
Multicarrier > 20 MHz deployments
DL: 300+ Mbs4
UL: 150+ Mbps4
( Beyond 20 MHz)
Rel-7 Rel-8 Rel-9 Beyond Rel-9 Rel-6 (HSUPA)
Rel-99 Rel-5 (HSDPA)
HSPA HSPA+ (HSPA Evolved) WCDMA
LTE LTE Advanced
Rel-10 Rel-8 Rel-9
2100M 2600M
Cell Radius
18%
Frequency Band Cell Radius (km) LTE 2600Mhz 0.95 LTE 2100Mhz 1.16
Remark: Urban scenario, cell edge throughput 2000kbps
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Source: du’s Partner Simulation
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HSPA+ LTE
84Mbps@10MHz 172Mbps@20Mhz (2x2)
326.4Mbps@20MHz(4x4)
8.4bps/Hz (Peak for DC+ MIMO
+ 64QAM) 8.6bps/Hz (Peak for 2x2 MIMO)
1.424/0.6 (MIMO+64QAM) 1.717/0.99 (2x2 MIMO)
ExisHng Need to apply or buy
SoRware or minor hardware
upgrade Newly build
Full system bandwidth Variable up to full system bandwidth
Requires significant compuHng power due to signal being defined in the Hme domain and on top of spreading
Ideal for MIMO due to signal representaHon in the frequency domain and possibility of narrowband allocaHon to follow real-‐Hme variaHons in the channel
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Scenario Cell Radius in DL (Km)
Dense urban Urban Suburban Rural HSPA 2.1GHz 0.38 0.57 2.34 4.62 LTE 2.1GHz 0.49 0.78 3.18 5.33 LTE 2.6GHz 0.4 0.64 2.58 4.68
DL Cell Radius Comparison. DL Cell edge throughput 512kbps, Indoor Coverage, 90% Cell Loading
Cell Loading
(%)
Cell Radius (Km) 10 20 30 40 50 60 70 80 90 100 %
UL 0.8 0.77 0.74 0.71 0.67 0.63 0.59 0.52 0.43 0.02 98% DL 0.79 0.75 0.71 0.67 0.62 0.58 0.54 0.49 0.45 0.43 45%
HSPA+ 2.1GHz,Urban scenario, indoor coverage, 128kbps/512kbps in UL/DL
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Cell Loading(%)
Cell Radius (Km) 10 20 30 40 50 60 70 80 90 100 %
UL 0.52 0.51 0.5 0.49 0.48 0.47 0.46 0.45 0.44 0.42 19% DL 0.79 0.77 0.76 0.74 0.72 0.71 0.68 0.66 0.64 0.61 23%
LTE 2.6GHz,Urban scenario, Indoor coverage, 128kbps/512Kbps in UL/DL.
• Cell Radius shrinks as a function of number of users at cell edge meeting the 512 Kbps Throughput - Only 6 users can achieve the throughput and the cell radius shrinks to
200m only
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Scheme UL Average Cell Throughput Remark
HSUPA 10ms 2.1Mbps CAT5,urban,UL cell load 75% HSUPA 2ms 2.3Mpbs CAT6,urban,UL cell load 75%
HSUPA 16QAM 3.0Mbps CAT7,urban,UL cell load 90% LTE 10MHz 9.7Mpbs Urban,2.6GHz LTE 20MHz 19.8Mbps Urban,2.6GHz
Scheme DL Average Cell Throughput Remark
HSPA(16QAM) 6.0Mpbs Urban, bandwidth 5MHz HSPA+(64QAM) 6.41Mbps Urban,bandwidth 5MHz HSPA+(MIMO) 6.98Mpbs Urban,bandwidth 5MHz
HSPA+(MIMO+64QAM) 7.12Mbps Urban,bandwidth 5MHz HSPA+(DC+16QAM) 6.43Mpbs Urban,bandwidth 5MHz HSPA+(DC+64QAM) 6.89Mbps Urban,bandwidth 5MHz
LTE 10MHz 16.92Mpbs Urban,2.6GHz LTE 20MHz 34.34Mbps Urban,2.6GHz
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Assumptions: - Urban Scenario
- HSPA+
1. Scenario 1: 1st carrier R99+HSAP(5 codes), 2nd carrier HSPA+(15 codes)
2. Scenario 2: 1st carrier HSPA+ (15 codes), 2nd carrier HSPA+(15 codes) - LTE bandwidth: 10 & 20 MHz
- Traffic Model assumption: data user 50kbps, voice user 0.025Elr - HSPA+ can support CS and PS service, LTE only support PS service.
Capacity/Cell subscribers supported/Cell
Number of supported simultaneous users
HSPA 2.1GHz (scenario 1)
22Elr(CS AMR12.2) 9.3Mbps(PS HSPA+)
880 voice subscriber + 186 Broadband subscriber 100K
HSPA 2.1GHz (scenario 2)
13 Mbps:2 native HSPA+ carriers, no voice with
DC-HSPA+ 260 Broadband subscriber 142K
LTE 10MHz @ at 2.6 GHz 16.92 Mbps 338 Broadband subscriber 185K
LTE 20MHz @ 2.1GHz 34.7Mbps 694 Broadband subscriber 380 K
LTE 20 @ 2.6GHz 34.3Mbps 686 Broadband subscriber 376K
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