July 2009 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Power and Spectrum Efficient PHY Proposal.

July 2009 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Power and Spectrum Efficient PHY Proposal for g] Date Submitted: [ 07 July, 2009] Source: [Khanh Tuan Le] Company [Texas Instruments] [Per Torstein Roine] Company [Texas Instruments] Address [Gaustadalleen 21, 0349 Oslo, Norway] Voice: [ ], Re: [] Abstract: [Power and spectrum efficient PHY proposal based on GFSK for g. Definition of multiple channels to support FHSS and Adaptive Frequency Agility.] Purpose: [Technical proposal. Presented to the g SUN Task Group for consideration.] Notice: This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P Khanh Tuan Le (TI)

Power and Spectrum Efficient PHY Proposal for 802.15.4g
July 2009 Power and Spectrum Efficient PHY Proposal for g IEEE 802 Plenary Meeting 15th July 2009, San Francisco Khanh Tuan Le Khanh Tuan Le (TI)

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Introduction Efficient working technology with focus on the user requirements, available frequency spectrum and applicable regulations for systems operating in the license exempt frequency bands This is an update of the submitted final proposal IEEE g “Power and Spectrum Efficient PHY Proposal for g” Khanh Tuan Le (TI) <author>, <company>

Proposal Update Details
<month year> doc.: IEEE <doc#> July 2009 Proposal Update Details Regional ISM Bands: Europe, China and US Channelization Modulation Format and Data Rates Forward Error Correction (FEC) Data Whitening Packet Format Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Background Focus on low system power consumption Low power reception and listening High transmit power efficiency Battery operation possible- Low average and peak current Spectral (and spectrum) efficiency increasingly more important Larger and more advanced networks require higher (peak) and scalable data rates Proven technology Reliable networks using GFSK and FSK today Multi channel support Semiconductor technology requirements Power optimized and cost efficient system solutions Flexibility Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Gaussian Frequency Shift Keying (GFSK) Gaussian shaping improves spectral efficiency Constant amplitude modulation Use of power efficient transmitter architectures and circuitry GFSK can be efficiently implemented on silicon radios with high degree of complexity and performance Proven and widely used technology 2-GFSK (1 bit/symbol) / 4-GFSK (2 bit/symbol) Khanh Tuan Le (TI) <author>, <company>

Modulation and Data Rates
<month year> doc.: IEEE <doc#> July 2009 Modulation and Data Rates Modulation format: 2-GFSK and 4-GFSK, BT=0.5 Data rates: (R1) 50 kbps : 2-GFSK, modulation index 0.9 (R2) 100 kbps: 2-GFSK, modulation index 0.9 (R3) 200 kbps: 4-GFSK, modulation index 0.3 Rb = 50 * 2N kbps for N= 0,1,2 Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Frequency Availability at 868 MHz FHSS less encouraging at 868 MHz than at 915 MHz Use of the entire 7 MHz band limits the channel spacing to less than 100 kHz regardless of FH or non-FH  Maximum data rate constraint FH does not enable higher transmit power Duty cycle or LBT also apply for FH systems Mostly single channel systems in operation today with duty cycle compliance Availability of multiple channels will be a significant improvement ’Creative’ (slow) hopping or frequency agility Larger channel spacing to enable higher data rates Khanh Tuan Le (TI) <author>, <company>

863-870 MHz ISM Band in Europe (1)
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (1) ERC/REC (Feb-2009) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (2) Frequency Band: MHz Frequency sub-bands and allowed max output power: MHz (600 kHz): 25 mW / +14 dBm (g1) MHz (500 kHz): 25 mW / +14 dBm (g2) MHz (250 kHz): 500 mW / +27 dBm (g3) Sub-band channel spacing: 250 kHz Number of channels: 5 Channel center frequencies: MHz and MHz MHz and MHz MHz Adaptive Frequency Agility (AFA) with Listen-Before-Talk (LBT) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (3) The center frequency of these channels is defined as follows: Fc = k in megahertz, for k = 0,1 Fc = k in megahertz, for k = 2,3 Fc = in megahertz, for k = 4 where k is the channel number Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (4) Channel Plan Illustration Center Freq Max Output Power MHz 25 mW (+14 dBm) MHz MHz MHz MHz 500 mW (+27 dBm) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (6) Frequency Band: MHz Frequency sub-bands and allowed max output power: – MHz (2000 kHz): 25 mW / +14 dBm (g) – MHz (600 kHz) : 25 mW / +14 dBm (g1) – MHz (500 kHz) : 25 mW / +14 dBm (g2) – MHz (250 kHz) : 500 mW / +27 dBm (g3) Sub-band channel spacing: 250 kHz Number of channels: 13 Channel center frequencies: / / / / / / / MHz MHz and MHz MHz and MHz MHz Adaptive Frequency Agility (AFA) with Listen-Before-Talk (LBT) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (7) The center frequency of these channels is defined as follows: Fc = k in megahertz, for k = 0-7 Fc = k in megahertz, for k = 8,9 Fc = k in megahertz, for k = 10,11 Fc = in megahertz, for k = 12 where k is the channel number Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in China (1) This proposal is presented as a possible technical solution. The suitability of this frequency band for SUN applications needs to be confirmed and aligned with the appropriate Chinese standardization bodies. Frequency band: MHz Max output power: 50 mW (+17 dBm) Signal bandwidth: Max 200 kHz Transmission time: Less than 5 seconds Frequency Hopping Spread Spectrum across the whole 40 MHz band Dynamic power control Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in China (2) # Channels Channel Spacing [kHz] Modulation Data Rate [kbps] Max Output Power [dBm] 156 (3 x 52) 250 2-GFSK 50 +17 100 4-GFSK 200 Multiple sets of (offset) channels could be defined to support several co-existing networks in the same area The main coexistence mechanism would still be the use of different hopping sequences Although networks share the same frequency range, coexistence is improved by good far-away selectivity, as the networks have a high probability of large frequency spacing at any given moment in time Multipath fading mitigation and coexistence with other networks are maximized utilizing the entire frequency band Khanh Tuan Le (TI) <author>, <company>

470-510 MHz ISM Band in China (3)
July 2009 MHz ISM Band in China (3) Channel Plan for MHz Guard band (0.25 MHz) on each side Multiple co-existing networks possible Khanh Tuan Le (TI)

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in The USA (1) FCC Part Frequency band: MHz (26 MHz) Frequency Hopping Spread Spectrum (FHSS) Max output power: 1 W (+30 dBm) or 250 mW (+24 dBm) Dynamic power control Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in The US (2) Frequency Hopping Spread Spectrum (FHSS) Well known and proven technique Required by some regional regulations (e.g. in the USA) for high transmit power levels Can be used for co-existence of multiple networks Can enable high aggregate throughput Inherent frequency diversity mechanism Required performance to facilitate frequency hopping is efficiently supported by semiconductor radio devices today Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in The USA (3) Channelization and Data Rates Regulations allow high degree of flexibility Smallest channel spacing determined by the lowest maximum data rate envisioned Receiver noise bandwidth set according to the data rate Widest channel spacing determined by the target number of channels to support a specific frequency hopping scheme N ≥ 50 for +30 dBm N ≥ 25 for +24 dBm Data rates set by the M-GFSK modulated signals within the channel Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in The USA (4) Example of Channelization and Data Rates # Channels Channel Spacing [kHz] Modulation Data Rate [kbps] Max Output Power [dBm] 100 (2 x 50) 250 2-GFSK 50 +30 100 4-GFSK 200 Can facilitate max +30 dBm output power if needed. Multiple sets of (offset) channels could be defined to support at least two networks in the same area The main coexistence mechanism would still be the use of different hopping sequences Although networks share the same frequency range, coexistence is improved by good far-away selectivity, as the networks have a high probability of large frequency spacing at any given moment in time Multipath fading mitigation and coexistence with other networks are maximized utilizing the entire frequency band Khanh Tuan Le (TI) <author>, <company>

902-928 MHz ISM Band in The USA (5)
July 2009 MHz ISM Band in The USA (5) Example of Channel Plan for MHz Guard band (500 kHz) on each side Multiple co-existing networks possible Khanh Tuan Le (TI)

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Simple Low Overhead FEC As support for very long packets is mandatory, a simple low-overhead FEC should be defined for optional use to improve the packet error rate Proposal: (128,120,4) extended Hamming code SECDED: Corrects single bit, detect double bit errors Double bit error detection does not improve PER, but is useful for early receive termination when packet is corrupted Can also be viewed and implemented as (127,120,3) BCH, extended by an extra parity bit Generator polynomials: x7+x3+1 (BCH) and x+1 (extra parity) After 15 octets of PHY data, one octet containing parity check bits (PCB) is inserted Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Packet Format Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Data Whitening Whitening is done after FEC octet insertion Same LFSR polynomial is used for whitening all the time The whitening LFSR is initialized to an unique value based on the channel number used for the packet This would enable retransmissions on the following channels to use different whitening for protection from packet data with poor whitening performance Data whitening should be optional Khanh Tuan Le (TI) <author>, <company>

Proposal Summary China Europe USA FHSS/AFA FHSS AFA Channel Spacing /
July 2009 Proposal Summary China Europe USA FHSS/AFA FHSS AFA Channel Spacing / No. of Channels 250 kHz / 156 Regulations driven 250 kHz / 5 (13) 250 kHz / 100 Flexible Max Output Power * Regional regulations 50 mW (+17 dBm) 25 mW (+14 dBm) 500 mW (+27 dBm) 1 W (+30 dBm) 250 mW (+24 dBm) Modulation and Data Rates Rb = 50 * 2N kbps for N= 0,1,2 (R1) 50 kbps : 2-GFSK, modulation index 0.9 (R2) 100 kbps: 2-GFSK, modulation index 0.9 (R3) 200 kbps: 4-GFSK, modulation index 0.3 Data Whitening Dynamic based on the channel number Optional FEC (128,120,4) extended Hamming code / (127,120,3) BCH Khanh Tuan Le (TI)

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Summary of the updates Khanh Tuan Le (TI) <author>, <company>

Modulation and Data Rates
<month year> doc.: IEEE <doc#> July 2009 Modulation and Data Rates Modulation format: 2-GFSK and 4-GFSK, BT=0.5 Data rates: (R1) 50 kbps : 2-GFSK, modulation index 0.9 (R2) 100 kbps: 2-GFSK, modulation index 0.9 (R3) 200 kbps: 4-GFSK, modulation index 0.3 Rb = 50 * 2N kbps for N= 0,1,2 Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Frequency Availability at 868 MHz FHSS less encouraging at 868 MHz than at 915 MHz Use of the entire 7 MHz band limits the channel spacing to less than 100 kHz regardless of FH or non-FH  Maximum data rate constraint FH does not enable higher transmit power Duty cycle or LBT also apply for FH systems Mostly single channel systems in operation today with duty cycle compliance Availability of multiple channels will be a significant improvement ’Creative’ (slow) hopping or frequency agility Larger channel spacing to enable higher data rates Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (2) Frequency Band: MHz Frequency sub-bands and allowed max output power: MHz (600 kHz): 25 mW / +14 dBm (g1) MHz (500 kHz): 25 mW / +14 dBm (g2) MHz (250 kHz): 500 mW / +27 dBm (g3) Sub-band channel spacing: 250 kHz Number of channels: 5 Channel center frequencies: MHz and MHz MHz and MHz MHz Adaptive Frequency Agility (AFA) with Listen-Before-Talk (LBT) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (3) The center frequency of these channels is defined as follows: Fc = k in megahertz, for k = 0,1 Fc = k in megahertz, for k = 2,3 Fc = in megahertz, for k = 4 where k is the channel number Khanh Tuan Le (TI) <author>, <company>

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (4) Channel Plan Illustration Center Freq Max Output Power MHz 25 mW (+14 dBm) MHz MHz MHz MHz 500 mW (+27 dBm) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (6) Frequency Band: MHz Frequency sub-bands and allowed max output power: – MHz (2000 kHz): 25 mW / +14 dBm (g) – MHz (600 kHz) : 25 mW / +14 dBm (g1) – MHz (500 kHz) : 25 mW / +14 dBm (g2) – MHz (250 kHz) : 500 mW / +27 dBm (g3) Sub-band channel spacing: 250 kHz Number of channels: 13 Channel center frequencies: / / / / / / / MHz MHz and MHz MHz and MHz MHz Adaptive Frequency Agility (AFA) with Listen-Before-Talk (LBT) Khanh Tuan Le (TI) <author>, <company>

<month year> doc.: IEEE <doc#> July 2009 MHz ISM Band in Europe (7) The center frequency of these channels is defined as follows: Fc = k in megahertz, for k = 0-7 Fc = k in megahertz, for k = 8,9 Fc = k in megahertz, for k = 10,11 Fc = in megahertz, for k = 12 where k is the channel number Khanh Tuan Le (TI) <author>, <company>

Proposal Summary China Europe USA FHSS/AFA FHSS AFA Frequency Band
July 2009 Proposal Summary China Europe USA FHSS/AFA FHSS AFA Frequency Band MHz MHz MHz Channel Spacing / No. of Channels 250 kHz / 156 Regulations driven 250 kHz / 5 (13) 250 kHz / 100 Flexible Max Output Power * Regional regulations 50 mW (+17 dBm) 25 mW (+14 dBm) 500 mW (+27 dBm) 1 W (+30 dBm) 250 mW (+24 dBm) Modulation and Data Rates Rb = 50 * 2N kbps for N= 0,1,2 (R1) 50 kbps : 2-GFSK, modulation index 0.9 (R2) 100 kbps: 2-GFSK, modulation index 0.9 (R3) 200 kbps: 4-GFSK, modulation index 0.3 Data Whitening Dynamic based on the channel number Optional FEC (128,120,4) extended Hamming code / (127,120,3) BCH Khanh Tuan Le (TI)

Multiple Co-Existing Networks
July 2009 Multiple Co-Existing Networks Khanh Tuan Le (TI)

doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> July 2009 Thank you! Khanh Tuan Le (TI) <author>, <company>

July 2009 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Power and Spectrum Efficient PHY Proposal.

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July 2009 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Power and Spectrum Efficient PHY Proposal.

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Presentation on theme: "July 2009 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Power and Spectrum Efficient PHY Proposal."— Presentation transcript:

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