lte world summit 2012 day 1 t2 luo halyen china mobile
DESCRIPTION
LTE World Summit Barcelona May 2012Day 1 - CHINA MOBILETRANSCRIPT
TD-LTE in China: Progress and Plan
China Mobile 2012 May
Outline
1. About TD-LTE Large Scale Trial
2. TD-LTE is Ready
3. Beyond Trial
Large Scale Trial: in 6 Cities, 10+9 Vendors Participating
• Guangzhou, Hangzhou , Nanjing, Shanghai, Shenzhen, Xiamen • Add up to 83 Million of population Cities
Participants
Hangzhou
ShanghaiNanjing
Xiamen
ShenzhenGuangzhou
3 Operators 10 Infrastructure Vendors9 Chipset Vendors
Large Scale Trial: Over 3000 Engineers Involved and 20000 Cases Executed
Over 3000 test engineers involved
Over 20000 Test cases, some of them are not easy to execute
200 terminals genera7ng concurrent services, In one single cell
What Tested: Technology and Product
Infrastructure (10 Vendors)
• Performance • Coverage, Throughput, Latency, HO, KPI
• Frequency Reuse• Reuse 1 and 3 verified & compared
• Multi-antenna • 2-path, 8-path, compact Antennas
Terminal (10 Vendors)
• Dedicated Terminal Test • Single mode, multi-mode, smart phone all tested
• Uu IOT • 47 pairs finished. 10 infra + 10 chipset
• Network IOT • Inter-vendor connectivity and handover
What Tested: Operation
Upgrade
• Fast upgrade on 3G TD-SCDMA at 1.9GHz • Takes a few hours, existing RRU and antennas intact
• Similar performance compared to fresh new eNB • China Mobile has 135k TD-SCDMA base stations
capable of upgrading to TD-LTE
Engineering
• Antenna use case analysis • 2-path, 8-path, compact antennas
• Co-site & Co-antenna • TD-LTE+2G/3G co-site practice
• Indoor Interference • LTE-WLAN interference solutions
Traditional Antenna
Compact antenna
Results: Peak Throughput Reaches Theoretical Value
90%-‐99% of theore7cal value, w/ CAT3 dongles • 55-‐60Mbps (DL:UL = 2:2, 6 vendors) • 76-‐81Mbps (DL:UL = 3:1, 5 vendors)
LTE FDD Results from FDD operatorsTD-‐LTE results (with 20MHz of Band 38)
• 97-‐102Mbps (20/15 MHz*2. 95%-‐100% of theore7cal value)
• 61Mbps (10MHz*2. 81% of theore7cal value) w/ CAT3 dongles
DL: 81.09Mbps
Snapshot of TD-‐LTE peak throughput test
Peak Throughput
110Mbps was achieved using CAT4 terminal in TD-‐LTE system with 3:1 configura7on.
Results: Latency Meets System Design Target
User Plane Latency • End to end latency <=30ms (On-‐schedule test results)
• LTE FDD: Around 20ms. 2ms less than TDD in theory
• Meets NGMN requirement and 3GPP design target
26 26 30
21 20.03
0
5
10
15
20
25
30
35
Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5
U-‐Plane Latency (ms)
106 105 109.8 104.6
85.7 71.3
0
20
40
60
80
100
120
Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5 Vendor 6
C-‐Plane Latency (ms)
Control Plane Latency (or: State Transi7on Time) • Around 100ms, comparable with LTE FDD, providing an “always-‐online” & “always connected” experience (~2s in WCDMA HSPA)
• Meets NGMN requirement and 3GPP design target
Results: Concurrent User Number in One Cell Meets Requirement of Commercial Operation
0
50
100
150
200
250
300
350
1 6 11
16
21
26
31
36
41
46
51
56
61
66
71
76
81
86
91
96
101
106
111
116
121
126
131
136
141
146
151
156
161
166
171
176
181
186
191
196
201
Throughp
ut (k
bps)
DL Throughput UL Throughput
Example: Per User Throughput �
Concurrent Users in one cell • More than 200 users can be connected to the same cell and simultaneously enjoy DL/UL services (In WCDMA HSPA, typical value is <=64)
• Everyone gets more than 100kbps downlink throughput AND 50kbps uplink throughput
• No test result from LTE FDD
214
202 202
215 212
204
195
200
205
210
215
220
vendor1 vendor2 vendor3 vendor4 vendor5 vendor6
Concurrent User Number
Results: Network KPI Comparable with Commercial Network
Network KPI • Ajach Success Rate: 98.2%-‐100% (5 vendors) • Call Setup Success Rate: 98.7%-‐99.7% (4 vendors) • Paging Success Rate: 98.2%-‐100% (5 vendors) • Handover Success Rate: 98.2%-‐100% (7 vendors) • Call Drop Rate: 0.54%-‐2% (4 vendors)
0%
5%
10%
15%
20%
DL throughput (Mbps)
DL throughput distribu7on during KPI testExample: KPI test in Hangzhou
• ~99% / ~99% • ~99% / >96% • ~99% / ~99% • >98% / >96% • <1% / <1%
Live Network (CS/PS)
Results: Networking Capability with Frequency Reuse Factor 1 Proved
Networking Capability with Frequency Reuse Factor 1 • Cell average throughput 21.2-‐37.4Mbps (26.5%-‐46.8% of system
maximum capacity. 7 vendors). • Test condi7on: 20UE in the test cell, and the network is 70%
loaded.
1.17 1.22
2.03 1.72
1.89
1.19
0.61
1.18 1.00
1.36
0.67 0.70 0.77 1.01
0.58
2.25
0.80 0.51
0.66 0.46
0
0.6
1.2
1.8
2.4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Throughp
ut (M
bps)
DL Per User Throughput – 70% loaded
10 test points in test cell and two UE at each point
DL Per user throughput—70% loaded
Example: Cell throughput w/ Frequency Reuse Factor = 1
• 50-‐56Mbps (20MHz*2, 31.4%-‐41.8% of system maximum capacity)
• 24-‐31Mbps (10MHz*2) Tested in unloaded network.
LTE FDD Results from FDD operators
Results: Mobile Internet Fits Better to TDD
Traffic in Mobile Broadband Era is Unsymmetric in Nature
Services
Web browsing 1:9-‐10
Video 1:4.5-‐12
Interac7ve service 1:2.6
In Reality
China Mobile 1:4-‐6
Hong Kong 1:4
Singapore 1:4.3
Spain 1:4.2
Romania 1:5.4
TD-‐LTE can Offer Flexible UL/DL Speed Ra]o
Ra]o of UL:DL traffic is about 1:4-‐6 Match
UL:DL speed is about 1:5.94 in TD-‐LTE system (UL:DL ]me slot configura]on
= 1:3)
Typical UL:DL ra7o in Mobile Broadband Era
System Ant. Cell thruput (UL/DL, Mbps)
UL:DL thruput
TD-‐LTE 2:2 8-‐path 13.8 / 25 (Test results) 1 : 1.81
TD-‐LTE 1:3 8-‐path 6.9 / 41 (Test results) 1 : 5.94
LTE FDD 2-‐path 30.98 / 37.55 (Test results) 1:1.21
• Typical UL:DL ra7o offered by LTE. • TD-‐LTE s7ll has big technological poten7al
TDD 20MHz, FDD 20*2MHz
Results: 3G to TD-LTE Upgrade is Verified in Band 39
Test results – Peak throughput: 81.7-85.1Mbps, about 90.8%-94.6% of theoretical value
– Cell throughput: 47.1Mbps (70% loaded), about 52% of system maximum capacity
– Latency: User-Plane ~20ms, C-Plane ~86ms, meets system design target
– Network KPI:
– No obvious performance degradation to existing 3G networks
Ajach Success Rate 98%-‐100% Call Setup Success Rate 98%-‐100%
Paging Success Rate 100% Handover Success Rate 99%-‐100%
Call Drop Rate 0-‐1%
Basic information • Test locations: Guangzhou,
Shenzhen, Hangzhou
• Base station upgraded from and
co-equipment with TD-SCDMA
• System configuration: • DL:UL=3:1
• DwPTS:GP:UpPTS = 3:9:2
• Terminal: CAT4 CPE
TDS Control TDL Control
TDS Baseband TDL Baseband
RRU
TDS Control TDL Control
TDS Basband TDL Baseband
RRU
Op7on 1 Op7on 2
• Both TD-‐LTE and TD-‐SCDMA can work well aper upgrade
• Upgrade from TD-‐SCDMA is an efficient way to setup TD-‐LTE network
Conclusions
Results: Chipsets / Terminals Reach the Commercial Capability with Single Mode Verified in Large Scale Trial
Single Mode
• Func7on and performance test: 8 vendors finished
• Uu IOT: 47 pairs finished
(10 infrastructures and 10 chipsets involved)
6 chipsets finished all tests in 2011
Lab and Small Scale Field Tests Large Scale Trial
Performance Inline with network performance: peak throughput, cell throughput, KPI and latency
Stabiliza]on: • 100% success rate on cell search, selec7on, ajachment, detachment and tracing area update • All terminals reach 60-‐minute long-‐running 7me with stable performance
IOT capability is proved for each chipset
Mul]-‐ Mode
• 2G/3G/LTE Interworking: 5 vendors finished
(2 vendors under test, including 1 smart phone)
3 chipsets will finish by this April
Chipsets/Terminals are fully tested on performance, func7onality and IOT.
Latest TD-LTE Industry Status
Infrastructures Chipsets Instruments
Ø Commercial products:
10 vendors
Ø Same level with FDD products
Ø Products from 10 vendors released
Ø Over 10 vendors have clear roadmap
Ø More than 50 types of instruments from over 20 vendors released
Ø Most have common plasorm with LTE FDD
Breakthrough of TD-‐LTE Terminal
2011, 36 models available, par]ally commercially released.
2012, more models will be commercially released, including smart phone.
TD-‐LTE CPE Band38/39/40
Smart Phone TD-‐LTE+2G/3G Band 38/39/40
LTE Hotspot Band 38/40
CPE Band 39/40
TD-‐LTE USB Band 38/40
USB Dongles CPE
Phones Tablet
TD-LTE Going into Commercial Stage
33
1217
2North America
South America
Europe
Asia
Oceania
Trial Networks Distribu]on 46 Worldwide Operators Joined GTI By 2012.4.15
• 8 commercial networks (Mobily, STC, Sopbank, Hi3G, SkyTV, UK Broadband, Bhar7) and 37 trial networks deployed
-‐ Around 9000 base sta7ons worldwide setup by the end of 2011
• GTI Plan and Ac]ons was released by united operators during LTE TDD/FDD Interna7onal Summit, February 2012, Barcelona
-‐ Achieve 500,000 TD-‐LTE base sta7ons and 2,000 million popula7on coverage by 2014
Commercial Ac]vi]es in China Beijing TD-‐LTE Demonstra]on and Experiencing Network
l TD-LTE Coverage - In first phase, 81 base stations have been set up and opened.
- Areas is around Chang’an Street,part of financial street and some industry/research areas including BUPT, CATR.
l TD-‐LTE terminal for demo and experiencing - Including data card, CPE and mobile hotspot, and most of them support TD-LTE/TD-SCDMA. - Now, data cards have good and stable performance (DL: ~59Mbps,UL:~17Mbps, Time Slot configuration DL:DL = 2:2).
ZTE innofidei Leadcore Sequans
Data card
CPEZTE innofidei Sequans Altair
NSN Sequans
Mobile Hotspot
MediaTeK
Hisilicon
on developing and tes7ng
on developing and tes7ng
Qualcomm ……
……
……
Commercial Ac]vi]es in China Hangzhou Network
• 500 macro in band 39• 200 macro in band 38• 100 indoor coverage• Green line in the right
map
2012 Q2
• 1000 Macro in band 39• 500 macro in band 38• 500 indoor coverage
• Red line in the right map
2012 Q3
Hangzhou map
Band 39 TD-‐SCDMA live network can be upgraded smoothly to the TD-‐LTE sharing same hardware • Only upgrade RRU’s sopware. BBU shelf is shared • takes less than three hours In short ]me we can complete the co-‐module upgrade of TD-‐SCDMA sites in order to achieve the same coverage of TD-‐LTE • 5000 TD-‐SCDMA sites in Hangzhou, 20,000 in Zhejiang province, more than 250,000 na7onwide
Commercial Ac]vi]es in China Hangzhou Network
First commercially LTE-‐Fi covered bus Line!
B1 Bus Line
• 60 users browsing internet, IM, apps at the same time, got great experience
• Each LTE-Fi provides 30Mbps DL throughput to the bus, averagely
Excellent Experience
• About 10000 daily LTE-Fi users on B1 bus line
• 450 users online at the same time
• Each user consumes 100MB data traffic a day
Fast market acceptance
• B1 line lasts 28Km, 20 stops, covered by 74 BS
• LTE-Fi installed on 55 B1 buses & 20 stations
• Providing Wi-Fi access to users, no need of LTE dongles or terminals
Commercial Activities in China
2012
LTE TDD/FDD mul7band MiFi
Mainland 9 ci7es+ Hongkong 20,000+ BS 100M+ popula7on
2013Major ci7es 200,000+ BS
300M popula7on
China Mobile are dedicated to promote a converged LTE network development
Thank you Thank You