3GPP

1
SAR HAC ????
2
Definition of SAR

• SAR (Specific Absorption Rate)
• ?????? ??? ???? ???? ? ???? ??
• ???? ??? ?.
• ??? watts per kilogram (W/kg).

3
ICNIRP Guidelines

• ????????????(ICNIRP)? ??? ????
• ??? ?? Guideline? ?? 2 W/kg (10g)

SAR Limit Occupational exposure limit General public exposure limit
Whole Body 0.4 W/kg 0.08 W/kg
Partial Body (head trunk) 10 W/kg 2 W/kg
Partial Body (limbs) 20 W/kg 4 W/kg
4
SAR Limits

• ??? ?? ?? 2 W/kg (10g) ? ??? ???? ??? ???, ?? ??
  ???? 1.6 W/kg (1g) ? ???? ?.

1.6 W/kg (1g)
? ??? ???
?? ??
5
CE SAR Criteria

• Test Standard EN50630 2001
• Test Method EN50361 2001

• Test scope of SAR Evaluation
• Only Portable Device, Not Mobile Device
• Head SAR Measurement only
• Output power is more than 20mW
• In case of Mobile Device applying a far field RF
  
• exposure calculation according to EN50385/
  EN50383

6
FCC SAR Criteria

• Test Standard 47CFR Part 2.1093
• Test Method OET Bulletin 65, Supplement
  C(July 2001)

• Test scope of SAR Evaluation
• Transmitter use distance lt 20cm from Body
• Head and Body SAR Measurements
• Use distance 20cm applying MPE calculation
• SAR Evaluation Criteria ? ??? ??? ??
• ?? ???.
• FCC??? KDB (Knowledge Data Base) ??? ??
• Handset? laptop ?? Multi-transmitter ?????
• Issue?.

7
Overview RF Exposure KDBs

• KDB 447498 Mobile and Portable Device RF Exposure
  Procedures and Equipment Authorization
  Policies
• General SAR thresholds and conditions
• Simultaneous-Tx(????) ? ?? ?? devices
• KDB 616217 or 648474?? ??? ?? Simultaneous-Tx(???
  ?) ??? multi-Tx product ????
• Laptops, tablets, body-worn, and hand-held
  devices ?
• KDB 616217 SAR Evaluation Considerations for
  Laptop
• Computers with Antennas Built-in on Display
  Screens
• ???, ??, ??? ??? ?? test reductions ?? ?.
• KDB 648474 SAR Evaluation Considerations for
  Handsets
• with Multiple Transmitters and Antennas

8
DASY4 SYSTEM in KTL
9
HAC (Hearing Aid Compatibility) ?

• ???????? ?????? ??? ? RF field
• ? ?? Interference ??? ??? ??
• HAC? ????? ????? ???? ??

10
Backgrounds

• ????? ? 10? ??? ??? ??? ? ? ? 80
• ? ???? ???
• ?????? ? 5? ?? ????? ?? ??
• 2003? 7? FCC? ???? ???? ????? ???
• ? ???? ?? ???? ???? ???? ?? rule? ??

11
ANCI C63.19

• 1996? ANSI C63? SC8 (medical devices) ??
• Task Group? ???
• ANSI C63.19-2001 ? Standard? ???? ??
• 2007 Version?? ??
• 800 3000 MHz ??? ?????? ???? ??
• ?? ??
• ?????? RF-Emission, T-coil mode? ????
• RF Immunity ??? ??

12
ANCI C63.19 2007

• 2007 Version ?? ????

? ? 2006 Version 2007 Version
RF Emission ???? ?????? 1cm ?????? 1.5cm
T-coil Rating T Rating Category? Level? ?? ?. T Rating Category? Level? ?? ?.

• 2006, 2007 Version ? 2009? ?? ?? ??? ??
• 2010???? 2007 Version?? ???? ?.

13
Operation of Wireless Device and Hearing Aid
14
Organization and use of ANSI C63.19
15
RF Emissions Test

• RF E-field Emission, RF H-field Emission
  Measurement

16
RF E H field Emission Measurement of WD

• The Grid is 5X5 area that is divided into 9
  evenly
• sized blocks or sub-grids.

Example E-field Scan
17
RF E H field Emission Measurement of WD

• M-Rating Determination

Multiply the peak emissions values by an
appropriate probe modulation factor.
For GSM signal, Crest Factor 26frames X
8times-slots 8.3
25frames used For
ideal) Probe Modulation Factor v Crest Factor
2.88 Peak Field Intensity 20 log ( Raw X
PMF)
18
RF E H field Emission Measurement of WD

• M Rating Determination M3, M4 ? PASS

Articulation Weighting Factor (AWF)

• AWF shall be used for the
• standard transmission protocols

19
T-coil signal Test

• Three quantities are measured and evaluated.
• 1. Field intensity of desired signal at the
  center of the audio band.
• 2. Frequency response of the desired signal
  measured
• across the audio band.
• 3. Signal quality, which is defined as the
  difference between
• the desired and undesired magnetic field
  levels.

20
T-coil Measurement setup in call mode
21
T-coil Measurement setup in call mode
22
T-coil Performance

• Axial and Radial Field Intensity
• All Orientations of the magnetic field, in
  the axial, horizontal
• and Vertical position along the measurement
  plane
• Shall be -18 dB (A/m) at 1KHz, in 1/3
  octave band filter.

• Frequency Response
• Signal quality

23
T-coil Performance

• Frequency response

Magnetic field frequency response for WDs with a
field between -15dB (A/m) at 1 kHz
24
T-coil Performance

• Frequency response

Magnetic field frequency response for WDs with a
field that exceeds -15dB (A/m) at 1 kHz
25
T-coil Performance

• Signal quality

26
Hearing Aid compatibility

• System performance classification table

27
FCC Requirement for Manufacturers Service
providers

• 2008? Manufacturer requirements
• M3 ??? ??? ?? 1/3 ??? ??? ??
• T3 ??? ??? ?? ? ?? ??? ???? ??
• 2009? 2??? 50? ??? M3??? ????
• ?? ??? ??

• 2008? Service provider requirements
• M3 ??? ??? ?? 50 ?? 8? ??? ???? ??
• T3 ??? ??? ?? 1/3 ??? ??? ??
• 2009? 2??? ?? ??? ??

• ? ????(CDMA, GSM) ? ?? ???

28
Definition of a Model

• No differences in form, features, or user
  capabilities, or that
• only differentiate particular carrier
• ? Not counted as distinct models

• Change in the hearing aid compatibility rating
• ? give a new model name/number

• Change in M or T rating
• ? form, features of capabilities. in change

29
Bands and Modes without Standards

• 2007 ANSI C63.19 establishes standards only for
  certain
• air interfaces in the 800-950 MHz and 1.6-2.5
  GHz bands

• Testing cannot be performed, and no rules
  currently apply, outside these bands/interfaces

• FCC adopted streamlined process for adopting
  future
• expansions of Standard

30
Multi-Band/Multi-Mode Phones

• handsets must meet standards in all frequency
  bands,
• all air interfaces. Technical standards
  exists

• No multi-band/multi-mode phones without standards
  currently exist. Except for Wi-Fi

• Multi-band/multi-mode phones with Wi-Fi voice
  capability
• ? Be counted as Hearing aid-compatible under
  FCC rules
• ? Labeling must disclose that handset is not
  rated for
• Wi-Fi operation

• ANSI ASC C63 consider new technologies deciding
  what
• rules to establish going forward

31
QA
Thank-you!