Robust, High Throughput, Extended range Wireless Connectivity for Mobile applications. Saeid Azmoodeh ST-Ericsson

Transcription

1 Robust, High Throughput, Extended range Wireless Connectivity for Mobile applications Saeid Azmoodeh ST-Ericsson

2 Outline Introduction Applications and markets Technology and standards Requirements and Challenges System and System-On-Chip Architecture Design and verification methodology WLAN Application platform Conclusion ARTEMISIA Association Title Presentation - 2

3 Home Wireless A/V Connectivity: Key Drivers TVs, STBs, DVDs Growth of Internet Video to the TV Catch up TV Specialist Media Delivery companies P2P & Download Device OEMs adding Streaming capabilities SW updates & security for DVDs ULP WLAN (Ozmo) development in remote controls Applications Multi-room video PC - to- TV based IP services Other IP- related interactive services Remote Controls and Audio headsets Gaming Entertainment in the living room beyond gaming: Microsoft Video Market place, Lionsgate download X box, Wii and Playstation 3 use Wi-Fi Slower growth due to long replacement of times Applications Movie downloads On-line gaming Portable to portable gaming PMPs Apple ipod Touch + Apple Airport Express Audio/Video portals: itunes, YouTube Applications Stream music to speakers/ receivers, headphones Access content over internet ARTEMISIA Association Title Presentation - 3

4 Wireless connectivity needs growing continuously View live broadcast TV Download movies TV-out High-Definition Video Gaming Edge/TD-SCDMA WCDMA/LTE Internet access Browsing and Cellular offload Content sharing Listening to radio Broadcasting of music Location-based services Emergency services Payment Money transfer File transfer Displaying multimedia content Audio headset Charging Talk wire-free Stereo headseet Info synchronization Home control ARTEMISIA Association Title Presentation - 4

5 Connectivity standards into handsets Integration roadmap Didn t make it so far: DVB T/H ZigBee UWB The number of Connectivity standards will continue to grow Not all will survive or be successful in handsets + DVB-T/H + BT2.0 + GPS + WLAN g + WLAN b + UWB + ZigBee + WLAN n + NFC + TV out + BT2.1 + ANT + USB n MIMO + HDMI + Galileo/Glonass + BT3.0/Low Energy c + WirelessHD ad/WiGig BT1.2 FM Radio USB ARTEMISIA Association Title Presentation - 5

6 More networks More radio interfaces GPS 1.57 GHz (L1 signal) 1.22 GHz (L2 signal) 1 FM Radio Mhz 10 LTE Stereo Headset Bluetooth 2.4 Ghz NFC Mhz 3 More networks More radio interfaces Ghz / 5 Ghz 5 DVB- T/H/SH 2G Mhz 2.5 G 1.8/ /1.9 Ghz WCDMA 0.85/1.7/1.9/2.1 Ghz Already 10 radio interfaces today Need for robust co-existence solutions and optimized integration ARTEMISIA Association Title Presentation - 6

7 Wireless Technologies Mainly as wireless HDMI In niche home office applications >> might disapear Primary wireless LAN Connectivity in A/V home Mainly for PAN wireless audio Connectivity >> Ozmo as threat ARTEMISIA Association Title Presentation - 7

8 Ultra mobile devices: Trends MIDs Segment of Ultra Mobile Device (UMD): a new class of converged mobile devices for computing, communications, information and/or entertainment Very similar to and competitor of Smart Phones / PDAs via a different channel to market Consumer devices with stripped down specs, open OS and highperformance processors Netbooks Mini-laptops Most have Intel Atom processor Most powered by Windows XP or Linux Cellular OEM s starting to enter the market Start to embed also cellular & GPS ARTEMISIA Association Title Presentation - 8

9 Multimedia and wireless platform Mobile phone is a multimedia convergence device Personal contents: 1080p HD Camcorder, High resolution picture (Up to 20Mpx in 2012) Applications generating large size files although compression methods are advancing Flash storage capacity for mobile devices is doubling every year: Upto 16GB 2008, 48GB in 2009 (N97), 256GB in 2012 Phone as a Host &/or a Peripheral to video content Data throughputs: transfer speed can always be faster Decreasing data card load/download time Today, USB measured throughput on N96 is 9MB/s (Read) & 5MB/s (Write) Target 100MB/s (16GB in 2mins) Bottleneck is memory access speed ARTEMISIA Association Title Presentation - 9

10 Outline Introduction Applications and markets Technology and standards Requirements and Challenges System and System-On-Chip Architecture Design and verification methodology WLAN Application platform Conclusion ARTEMISIA Association Title Presentation - 10

11 WLAN Core requirements abgn with 2.5/5GHz PA & PMU integrated Scalable WLAN architecture capable of 1x1, 2x1, 2x2 configurations Standard interfaces: SPI, SDIO & USB SLPI for mobile applications USB consideration USB offers better signal integrity & flexibility even in some mobile designs & to address convergence of PC/mobiles/netbooks Wi-Fi Direct, an easy to use Peer to Peer mode Emulate Access Points in a client Bluetooth over Wi-Fi, uses MAC/PHY for BT data traffic Coexistence/Cohabitation frequency planning ready for combo connectivity and embedded IP solutions ARTEMISIA Association Title Presentation - 11

12 Low Power WLAN Energy consumption of all consumer devices is a key environmental issue and power consumed in standby modes is mandated to be below 1W 2006, the British Government announced it would outlaw televisions and video players that exceed the maximum standby-mode power consumption standard (1 watt). 2007, California's 2005 appliance standards came into effect, limiting external power supply standby power to 0.5 watts. 2008, the European Union regulatory committee accepted a proposal to reduce standby power consumption to either 1 or 2 watts by It also warrants a further reduction to 0.5 or 1 watt by For example a Wi-Fi connected printer can be located anywhere in the home and needs to be Always On Wake on LAN is now needed for Wake on WirelessLAN making the power saving features a key requirement for the WLAN chip ARTEMISIA Association Title Presentation - 12

13 Summary of challenges Low power consumption and host offloading for longer battery life Low cost, hence maximum level of integration small footprint and thickness of the final SoC part QoS (Quality of Service), eg in video communication, to ensure video performance is maintained Security Different throughput/range requirement for scalability Coexistence with other wireless standards Ease of integration and standard interfacing Feature rich, multiple extensions of standard, applicable to mobile platform MIMO functionality, as a minimum asymmetric Space-Time-Block- Coding (STBC), to benefit from AP s with multiple antennae ARTEMISIA Association Title Presentation - 13

14 Key features Single-chip dual-band IEEE abgn SDIO and SPI interfaces Integrated low band +21dBm PA SMPS DC-DC direct battery connection Comprehensive peer-to-peer connectivity support for Wi-Fi and Bluetooth over WLAN Host offloading of beacon and packet processing Extensive coverage of IEEE extensions for QoS Security i, WPA /WPA2 personal and enterprise WEP WAPI CCXTM v5 client security ARTEMISIA Association Title Presentation - 14

15 Outline Introduction Applications and markets Technology and standards Requirements and Challenges System and System-On-Chip Architecture Design and verification methodology WLAN Application platform Conclusion ARTEMISIA Association Title Presentation - 15

16 WLAN platform System architecture ARTEMISIA Association Title Presentation - 16

17 WLAN HW platform system architecture Integrates SoC Single Chip WLAN, including the Radio and PA Standard Host interfaces AES/WEP and WAPI Encryption engine Enhanced PTA for high performance BT/WLAN coexistence High level of integration to minimise external component needs Discrete external components Antenna Switch (RF Tx/Rx and BT) Antenna ARTEMISIA Association Title Presentation - 17

18 WLAN HW platform: SoC architecture ARM9 based MAC (Media Access Controller), with dedicated HW Protocol accelerator, memory subsystem designed for optimum diesize, performance, power and flexibility to enable extensions Power management unit with integrated PA control Host interfaces An enhanced interface to the Bluetooth subsystem, BT/WLAN coexistence schemes Dual band ZIF transceiver RF Synthesizer/VCO, high-speed data converters WLAN baseband subsystem, requiring minimal SW configuration, for rapid start-up following power-down ARTEMISIA Association Title Presentation - 18

19 WLAN HW platform: SoC architecture Baseband subsystem provides: DSP algorithms to modulate/de-modulate a/b/g/n frames Ensure constant PAS to Antenna delay (TX) and Antenna to PAS (RX) delay, for uniform compensation values (different rates/modulation) Control signals for PA control, switch control, external FEM control All channel acquisition, antenna control and interface to RF Fine-grained clock gating to minimise power consumption ARTEMISIA Association Title Presentation - 19

20 WLAN SW platform Implements functionality and consists of 2 parts MAC (Media Access Controller) Reference software MAC SW implements the standard as defined by IEEE to support abgn and other extensions relevant to mobile platforms Reference software provides a set of drivers needed to have a full working system on different platforms ARTEMISIA Association Title Presentation - 20

21 WLAN SW platform structure (simplified) Host interface uses Message passing WDEV is host SW module and provides an abstraction layer to WLAN device WDEV is agnostic to host OS and Host HW WLAN Device Host ARTEMISIA Association Title Presentation - 21

22 Outline Introduction Applications and markets Technology and standards Requirements and Challenges System and System-On-Chip Architecture Design and verification methodology WLAN Application platform Conclusion ARTEMISIA Association Title Presentation - 22

23 Phy Design flow ARTEMISIA Association Title Presentation - 23

24 System Design and Verification System verified at all levels from RF/Analog/Digital to full system operation, including FW/Host software. 4 levels were defined: Level1: Basic/complex IP verification, to ensure all building block meet the specification. Level2: First level integration of IP s Level3: Top level integration and full integration of system (White Box testing) Level4: Top level system testing (Black-Box testing) with final design, including FW/SW, real environment and stress testing Level1 and 2 at different part of the system, eg RF/Analog, Digital/RTL, System/Models Level3 and Level4 used FPGA platforms + RF (From test-chip) ARTEMISIA Association Title Presentation - 24

25 System Design and Verification platform FPGA platforms for the full digital part of design RF from earlier test-chips Full System verification (HW/SW) Over the air, real environment System Stress testing Radio on WLAN daughter board: i) RF-test-chip ii) Radio from previous product ARM Versatile FPGA ARTEMISIA Association Title Presentation - 25

26 Level3 Phy system Verification Control PC PCI FPGA SPI/SDIO Baseband & MAC in FPGA Logic Tiles WLAN Radio Interface to/from FPGA JTAG Radio Interface HIF DEBUG Daughter board Vector Signal Generator & Vector Signal Analyser Control & Measurement board Analyzer TIle Logic Tile1 Logic Tile2 FPGA Baseboard ARM Versatile Baseboard, hosts ARM processor, peripheral hardware and interfaces Digital Modem and Protocol Accelerator are hosted in Virtex-4 Logic Tiles Interface to/from Radio on FPGA Host Interface is emulated in an FPGA on a PCI Card Test equipment to generate/analyse WLAN traffic Close loop with model simulation ARTEMISIA Association Title Presentation - 26

27 Level4 full system Verification (incl SW/FW) HOST Platform SPI/SDIO Baseband & MAC in FPGA Logic Tiles compliant Acces Point WLAN Radio Daughter board Interface to/from FPGA JTAG Radio Interface HIF DEBUG SW/FW full system verification WiFi pre-certification Interoperability tests SoC TapeOut after full system verification Control & Measurement board Analyzer TIle Logic Tile1 Logic Tile2 FPGA Baseboard ARTEMISIA Association Title Presentation - 27

28 Outline Introduction Applications and markets Technology and standards Requirements and Challenges System and System-On-Chip Architecture Design and verification methodology WLAN Application platform Conclusion ARTEMISIA Association Title Presentation - 28

29 WLAN HW platform: form factor Application Daughter Board (Form factor) designed to incorporate WLAN solution as well other connectivity technologies usually present in final application WLAN SoC Two varieties: Single-Band and Dual-Band This board is self-contained with WLAN, BT, FM and GPS functionality WLAN is complete solution from hostinterface to Antenna. Platform interface is to provide SDIO/SPI interface, power, reference-clk WLAN form-factor section 60 pin connector to interface to platform: SDIO/SPI, power, Ref-Clk ARTEMISIA Association Title Presentation - 29

30 Conclusion WLAN based on IEEE802.11a/b/g/n as a cost effective scalable solution for video surveillance systems and smart mobile platforms A solution which meets key requirements for Composability, Predictability and Dependability Low power Scalable Low cost QoS Security Coexistence and Cohabitation with other wireless communication Ease of HW/SW integration Advanced design and verification methodology for First-Time- Right-Design leading to best Time-to-Market ARTEMISIA Association Title Presentation - 30

31 Thank you for your attention We value your opinion and questions