HSPA+ and LTE Test Challenges for Multiformat UE Developers

Transcription

1 HSPA+ and LTE Test Challenges for Multiformat UE Developers Presented by: Jodi Zellmer, Agilent Technologies

2 Agenda Introduction FDD Technology Evolution Technology Overview Market Overview The Future for Multiformat UE Developers Conclusions 2

4 HSPA+ and LTE: Living Together? HSPA+ and LTE - exciting today Higher data throughput More applications LTE HSPA+ HSPA What about tomorrow? 4

6 3GPP Standards Evolution FDD DL 384 kbps 14.4 Mbps 14.4 Mbps 28.8 Mbps UL 384 kbps 384 kbps 5.8 Mbps 11 Mbps Rel-99 W-CDMA Rel-5 HSDPA Rel-6 HSUPA Rel-7 HSPA+, MIMO 42 Mbps 84 Mbps 168 Mbps 336+ Mbps DL 11 Mbps 23 Mbps 23 Mbps 46+ Mbps UL DC-HSDPA Rel-8 LTE 2 x 2 DC+MIMO, DC-HSUPA Rel-9 LTE 4 x 4 MIMO 4C-HSDPA Rel-10 LTE-Advanced HSPA+ Advanced Rel-11 LTE-Advanced 150 Mbps 303 Mbps 1.2 Gbps 1.2+ Gbps DL 51 Mbps 86 Mbps 600 Mbps 600+ Mbps UL 6

8 HSPA and HSPA+ Overview WCDMA Wideband CDMA Rel-99 HSPA High-speed packet access Rel-5 and Rel-6 HSPA+ Enhanced HSPA Rel-7 DL 384 kbps UL 384 kbps DL 14.4 Mbps UL 5.6 Mbps DL 21 Mbps UL 11 Mbps HSDPA and HSUPA (DL and UL) 2 ms vs. 10 ms transmission times New DL modulation type: 16QAM UE Acknowledgements and CQI MAC real-time scheduling Flexible UL power grants New DL modulation type: 64QAM New UL modulation type: 16QAM DL flexible packet sizes 8

9 MIMO and Multi-Carrier Overview Technology 3GPP DL UL HSPA+ R7 21 MIMO R7/8 42 2C HSDPA R9 42 4C HSDPA R C + MIMO R9 84 4C + MIMO R DC-HSUPA R9 23 Mbps HSPA+ Rel-7 to Rel-10 MIMO 2 to 4 carriers Multiple input multiple output Two to four carriers DC is two carriers Multiple 5 MHz channels DL and/or UL Multiple antennas not required MIMO Two DL data streams, 2 DL antennas Two UL antennas One 5 MHz channel HSPA+ Rel-7 Greater insight. Greater confidence. 9

10 HSPA+ Advanced: Overview Five to eight carriers Up to 40 MHz aggregate bandwidth Downlink only Can be combined with MIMO Technology 3GPP DL UL HSPA+ R7 21 MIMO R7/8 42 2C HSDPA R9 42 HSPA+ Rel-7 and Rel-8 MIMO HSPA+ Adv. Rel-8 to Rel-11 2 to 8 carriers Multipoint 4C HSDPA R C + MIMO R9 84 4C + MIMO R C HSDPA R C + MIMO R DC-HSUPA R9 23 Mbps HSPA+ Rel-7 Multi-point transmission Data sent from multiple cells Requires multiple carriers UE must support Rx diversity Can be combined with MIMO 10

11 LTE Overview Rel-8 and Rel-9 Long Term Evolution of UMTS DL 100 to 303 Mbps RB = 0.5 ms in 180 khz UL SC-FDMA DL OFDMA Subcarriers UL 51 to 86 Mbps EPC is all-ip MIMO 11

12 LTE-Advanced Overview A 4G Technology According to IMT-Advanced Technology 3GPP DL UL DL 2x2 MIMO R8 150 UL SISO R8 75 UL 2x2 MIMO R9 150 DL 4x4 MIMO R9 303 DL 8x8 MIMO R DL 5 CCs R DL 5C + 2x2 R Carrier aggregation Carrier Aggregation Component carriers (CCs) Use any existing bandwidth Up to 5 CCs in the DL and UL Can be combined with MIMO LTE Rel-8 and Rel-9 UL 4x4 MIMO R UL 5 CCs R UL 5C + 2x2 R Mbps LTE-Advanced Rel-10 Enhanced MIMO Interference management Enhanced MIMO Up to 8x8 in the DL Up to 4x4 in the UL Multi-user MIMO (MU-MIMO) Greater insight. Greater confidence. 12

14 Strong Industry Support HSPA LTE Networks Launched Committed Devices 3,

15 It s All About Data Rates Especially in the Downlink 20 MHz 10 MHz 5 MHz HSPA+ 168 Mbps LTE 172 Mbps HSPA+ 84 Mbps LTE 73 Mbps HSPA+ 42 Mbps LTE 37 Mbps Using 2x2 MIMO Greater insight. Greater confidence. 15

16 Millions of Units LTE Wins - Later Annual Handset Shipments by Technology Source: Deutsche Bank, July 2011 HSPA CDMA GSM WCDMA HSPA TD LTE WiMAX 100 LTE Greater insight. Greater confidence. 16

17 HSPA+ and LTE - Now A wary truce? Or a comfortable balance? H S P A Installed base New investment L T E Either way, more challenges for wireless developers 17

19 The Future for Device Developers A successful multiple-technology device must balance cost and flexibility Cost Flexibility WiFi WCDMA GSM HSPA+ LTE Greater insight. Greater confidence. 19

20 UE Design Testing Validation PRODUCT Certification and IOT fails REF DESIGN Multiple loops with different testing as the platform matures Initially func/perf, then conformance then IOT Test List X100? Add new test Test List X2000? Lab IOT Testing IOT Scenarios Inter-RAT Test Modem Func/Perf Signalling RF IOT UE Func/Perf Inter-RAT Stress Test Signalling Conf RF Conf Apps Conf Live Network Testing Report Failures and replicate issues for platform team Relationships Managed by Validation Team External Testing PRODUCT REF DESIGN Test House Certification GCF Conformance App Enabler Signalling Physical Type Approval FCC CE Marking Mech etc Report Failures to Validation PRODUCT REF DESIGN Report Failures to Validation PRODUCT REF DESIGN Field Tests GCF FT on FTQ Net PTCRB Operator Acceptance Lab IOT Testing RF Tests Protocol Tests Field Tests Report Failures to Validation PRODUCT REF DESIGN Report Failures to Validation NEM Infra Lab Lab IOT Infr Testing Report Failures to Validation So many tests, so little time 20

21 Challenge: Data Throughput Validation UE Functional and Performance Test Graphical results are useful for observing throughput performance over time Start Uplink FTP Stop Downlink FTP Absolute Grant But statistics are useful too, to observe the UE s perceived channel quality CQI Value Greater insight. Greater confidence. 21

22 Data Throughput (kbytes/sec) Challenge: Data Throughput Validation Automated Test Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Ch Cell power vs. Data throughput rates - phone Data rate decreases sharply for high cell power Data rate drop-outs Cell Power (dbm) 22

23 Challenge: Voice and Data Continuity Across Technologies UE Design Validation - Inter-RAT Test Handover RRC_Release handover (enodeb decision) E-UTRA Handover (enodeb decision) CONNECTED LTE 3G Many types of handovers defined between all technologies Connection establish/ release IDLE SERVING CELL LTE Connection establish/ release TARGET CELL 3G Cell Re-selection Cell Re-selection (UE decision) LTE / 3G example Greater insight. Greater confidence. 23

24 Challenge: Simultaneous UE Activities UE Design Validation Stress Test Protocol Log Failure FTP SMS Failure caused by SMS buffer limitations in UE Failure Failure caused by unique combination of activities Cell Power Time 24

25 Challenges: Inter-RAT, Battery Drain, Inter-Operability Operator Acceptance Test Greater insight. Greater confidence. 25

26 Agilent: A Full Portfolio for the Wireless UE life-cycle Fast, High-Performance Instruments GS8800 Results You Can Trust PXT (E6621A) 2G/3G/LTE DVT & RCT 8960 (E5515E) Complete LTE R&D 8960 (E5515C) New Power Unleashed for 2G / 3G / 3.5G R&D EXT (E6607A) Industry Benchmark for 2G/3G/3.5G Greater insight. Greater confidence. Next Generation Manufacturing 26 MCD/ MBO MWC 2012

28 Conclusions Tomorrow: more mobile than fixed? More LTE, still HSPA+ HSPA+ Adv. LTE- Adv. LTE More data applications Optimal test efficiency Flexible TEST Repeatable Reliable 28

29 References 4G Mobile Broadband Evolution: 3GPP Release 10 and Beyond, February 2011, 4G Americas, 10_Beyond_2.1.11%20.pdf Overview of 3GPP Release 10 V0.1.3 ( ), 3GPP, 10_description_ zip Overview of 3GPP Release 11 V0.0.9 ( ), 3GPP, 11_description_ zip 3GPP Long Term Evolution: System Overview, Product Development and Test Challenges, Agilent Technologies, September , HSPA+ Evolution: Enhanced Mobile Broadband for All, Qualcomm, October 2011, Greater insight. Greater confidence. 29

30 Agilent Product References E5515E (8960) and E6703H W-CDMA/HSPA lab application software with 42 Mbps DC-HSDPA throughput E6621A PXT combined with 8960 for reliable inter-rat handovers between all technologies Interactive functional test (IFT) software for stress tests with simultaneous UE activities and operator acceptance tests Greater insight. Greater confidence. 30

31 Additional Slides Greater insight. Greater confidence. 31

32 Enabling Market Drivers HSPA+ Advanced More data Existing HSPA Network LTE Spectrum Less voice Simple upgrades Less battery drain HSPA+ Advanced Network Greater insight. Greater confidence. 32

33 Enabling Market Drivers LTE-Advanced Existing LTE Network More user capacity Mobile performance like fixed Internet Higher data rates LTE-Advanced Network Greater insight. Greater confidence. 33

34 Benefits and Goals from 3GPP HSPA+ (Rel-7, 8, 9, 10) Benefit MC MIMO CPC ECF Improved spectral efficiency More capacity Higher data rates X X Improved user experience Improved battery life HSPA+ Advanced (Rel-11) X X X X X X X Benefit RxD LB MP Improved spectral efficiency More capacity when needed X X LTE (Rel-8, 9) Competitive 3G system IP-only data traffic 4x increased spectral efficiency 10x users per cell DL / UL data rates: > 100 Mbps / 50 Mbps Latency comparable with fixed broadband Internet Interworking with other radio access systems Flexible frequency band allocations LTE-Advanced (Rel-10) Align with the requirements of IMT-Advanced Global functionality and roaming Interworking with other radio access systems Enhanced peak data rates: 100 Mbps for high mobility and 1 Gbps for low mobility Enhanced user experience X MC: Multi-carrier, CPC: Continuous Packet Connectivity, ECF: Enhanced CELL_FACH, RxD: 4 Receiver Diversity, LB: Load Balancing between NodeBs, MP: Multipoint transmission 34

35 Deployment Challenges HSPA+ Advanced Continuous add-ons to improve existing technologies sometimes result in more complex technical implementation due to the need for backwards compatibility with existing network behavior Several improvements beyond HSPA are required before data rates comparable to LTE are achievable Existing backhaul can limit actual data rates LTE-Advanced Capital to build new infrastructure Spectrum bundles > 10 MHz Learning curve for a new technology Interworking with existing technologies (i.e. inter-rat handovers) Greater insight. Greater confidence. 35

36 Market Predictions HSPA+ HSPA+ and LTE LTE Past Now Future 36