1. Complete Proposal for 802.11ad
Month Year
doc.: IEEE yy/xxxxr0
May 2010
Complete Proposal for ad
Date:
Authors:
Name
Company
Address
Phone
Hiroshi Harada
NICT
3-4, Hikarino-oka, Yokosuka, Japan
Chang-Woo Pyo
Zhou Lan
Junyi Wang
Ryuhei Funada
Tuncer Baykas
Chin Sean Sum
Akio Iso
Shuzo Kato
Masahiro Umehira
Lu Liru, Alina
20 Science Park Road, #01-09A/10, TeleTechPark, Singapore
Zhang Xin
Hiroshi Harada, NICT
John Doe, Some Company

2. May 2010 Name Company Address Phone Email Hirokazu Sawada
Tohoku University
2-1-1 Katahira, Aoba-ku,. Sendai Japan
Ichirou Ida
Fujitsu Limited
,kawasaki, kanagawa, Japan
Kaoru Yokoo
Nobuhiko Shibagaki
Hitachi
1-280, Higashikoigakubo Kokubunji, Tokyo, Japan
Shoichi Kitazawa
ATR
Hiroshi Harada, NICT

3. May 2010
Summary
This document proposes the PHY and MAC layer design for ad operating in the 60GHz band
PHY layer design
A hybrid PHY designed consisting of the SC PHY and the OFDM PHY is proposed
Channelization of the 60GHz band is presented
Data rate modes of respective PHYs are listed
Common mode signaling bridging across two PHYs is introduced
Frame format for respective PHYs are presented
MAC layer design
Proposed MAC contains Basic MAC and Enhanced MAC
Basic MAC is based on and other amendments to support user experience
Enhanced MAC is designed to achieve very high throughput (>1Gbps), directivity support, coexistence with other 60GHz systems and QoS improvement
Beam forming
Hiroshi Harada, NICT

4. Motivation of Proposal
May 2010
Motivation of Proposal
This proposal has the following purposes of
Enhancement of PHY and MAC to fulfill the requirements of ad system
Co-existence of other already standardized 60GHz systems such as c WPAN
Hiroshi Harada, NICT

5. Presentation Outline Section 1: PHY Proposal for 802.11ad
May 2010
Presentation Outline
Section 1: PHY Proposal for ad
Overview of the Proposed ad PHY
Channelization
Modulation and Coding
Common Mode Signaling
SC PHY Frame Format
OFDM PHY Frame Format
PHY Simulation Results
Section 2: MAC Proposal for ad
Overview of the proposed ad MAC
Enhanced MAC
Co-existence
MAC Simulation Results
Hiroshi Harada, NICT

6. Section 1: PHY Proposal for 802.11ad
May 2010
Section 1: PHY Proposal for ad

7. Abbreviations FEC – forward error correction
May 2010
Abbreviations
FEC – forward error correction
MCS – Modulation and Coding Scheme
SC - Single carrier
OFDM - Orthogonal Frequency Division Multiplexing
CMS – Common Mode Signaling
Hiroshi Harada, NICT

8. Presentation Outline (PHY Layer)
May 2010
Presentation Outline (PHY Layer)
Overview of the Proposed ad PHY
Channelization
Modulation and Coding
Common Mode Signaling
SC PHY Frame Format
OFDM PHY Frame Format
Hiroshi Harada, NICT

9. Overview of the Proposed 802.11ad PHY
May 2010
Overview of the Proposed ad PHY
The proposed ad PHY consists any or the combination of the following:
SC PHY
OFDM PHY
Features of the PHY modes:
The SC PHY mainly targets applications with low complexity
The OFDM PHY mainly targets applications that require higher data rates
To reduce implementation burden, both PHYs are designed to have similarities in the aspects of frame construction
To manage multi-PHY-mode management and mitigate interference, the CMS is specified to facilitate coexistence between the SC PHY and the OFDM PHY
Hiroshi Harada, NICT

10. May 2010
Channelization
Channel
Number
Lower Freq.
(GHz)
Center Freq.
Upper Freq.
Nyquist BW
(MHz)
Channel Spacing (MHz) 1
57.240
58.320
59.400
1760
2160 2
60.480
61.560 3
62.640
63.720 4
64.800
65.880
Hiroshi Harada, NICT

11. Overview on SC and OFDM Data Rates
May 2010
Overview on SC and OFDM Data Rates
The SC and OFDM classes of data rates give flexibility to various potential applications requiring data rate support from several hundreds of Mbps to several Gbps
The data rate classes are categorized as:
Class 1 – up to 1.6Gbps
Class 2 – up to 3 Gbps
Class 3 – up to 7 Gbps
A Robust MCS called CMS is proposed to bridge between the SC and OFDM PHYs
In OFDM PHY, three modes with different FFT sizes are proposed for flexibility.
Hiroshi Harada, NICT

12. Timing Related Values for SC PHY
May 2010
Timing Related Values for SC PHY
Description
Value
Unit
Symbol Rate
1760
Mchips/s
Symbol Duration
~0.568 ns
Subblock Length
512
chips
Pilot Word length 64
Pilot Word Duration
~37
Data symbols per subblock
448
Subblock Duration
~290.9
Subblock rate
~3.44
MHz
Hiroshi Harada, NICT

13. MCSs for SC PHY May 2010 *Mandatory MCSs MCS Class MCS Index Data Rate
Modulation
FEC
Coding Rate
Data
Spreading
Factor
PW=64
PW=0
SC Class 1
0 *
26 Mbps
p/2-BPSK
RS (255,239)
0.937 64 1
361 Mbps
412Mbps 4 2
722 Mbps
825Mbps
3 *
Mbps
1650 Mbps
1160 Mbps
1320 Mbps
LDPC(672,504)
0.75 5
385 Mbps
440 Mbps
LDPC(672,336)
0.5 6
880 Mbps
SC Class 2 7
1760 Mbps
p/2-QPSK 8
2640 Mbps 9
2700 Mbps
3080 Mbps
LDPC(672,588)
0.875 10
3300 Mbps
SC Class 3 11
3470 Mbps
3960 Mbps
p/2-8PSK 12
4620 Mbps
5280 Mbps
p/2-16QAM
*Mandatory MCSs
Hiroshi Harada, NICT

14. Timing Related Values for OFDM PHY MODE 1
May 2010
Timing Related Values for OFDM PHY MODE 1
Description
Value
Unit
Nominal Bandwidth
2640
MHz
Number of Subcarriers
512
Number of Data Subcarriers
336
Number of Reserved Subcarriers 16
Number of Pilot Subcarriers
Number of NULL Subcarriers
141
Number of DC Subcarriers 3
Subcarrier Frequency Spacing
Nominal used bandwidth
1815
FFT period
~193.94 ns
Guard Interval Duration
~24.24
OFDM Symbol Duration
~218.18
Hiroshi Harada, NICT

15. Timing Related Values for OFDM PHY MODE 2
May 2010
Timing Related Values for OFDM PHY MODE 2
Description
Value
Unit
Nominal Bandwidth
2640
MHz
Number of Subcarriers
128
Number of Data Subcarriers 84
Number of Pilot Subcarriers 4
Number of NULL Subcarriers 35
Number of DC Subcarriers 1
Subcarrier Frequency Spacing
20.625
Nominal used bandwidth
1815
FFT period
~48.485 ns
Guard Interval Duration
~6.06
OFDM Symbol Duration
~54.545
Hiroshi Harada, NICT

16. Timing Related Values for OFDM PHY MODE 3
May 2010
Timing Related Values for OFDM PHY MODE 3
Description
Value
Unit
Nominal Bandwidth
2640
MHz
Number of Subcarriers 64
Number of Data Subcarriers 42
Number of Pilot Subcarriers 2
Number of NULL Subcarriers 19
Number of DC Subcarriers 1
Subcarrier Frequency Spacing
41.25
Nominal used bandwidth
1815
FFT period
~24.242 ns
Guard Interval Duration
~6.06
OFDM Symbol Duration
~30.3
Hiroshi Harada, NICT

17. MCS for OFDM PHY May 2010 MCS Class Data Rate Modulation FEC
Coding Rate
Spreading
OFDM Class 1
1540
QPSK
LDPC(672,336)
0.5 1
OFDM Class 2
2310
LDPC(672,504)
0.75
2695
LDPC(672,588)
0.875
OFDM Class 3
3080
16-QAM
4620
5390
6930
64-QAM
*FFT size: 512, 128, 64
Data rates are for FFT sizes 512 and 128. For 64, data rates are around 10% less.
Hiroshi Harada, NICT

18. MCS for Common Mode Signaling
May 2010
MCS for Common Mode Signaling
MCS Index
Data Rate
PW=0
Modulation
FEC
Coding Rate
Data
Spreading
Factor 26
p/2-BPSK
RS (255,239)
0.937 64
*Note that CMS is the first MCS in the SC PHY table
Hiroshi Harada, NICT

19. CMS Functional Description
May 2010
CMS Functional Description
CMS is the most robust and long reaching MCS in the SC PHY and is specified to bridge between the SC PHY and OFDM PHY
CMS is the mandatory MCS for all STAs
CMS is employed in procedures facilitating multi-PHY-mode network management (i.e. discovery and synchronization) and other cross-PHY procedures
Hiroshi Harada, NICT

20. May 2010
Generic Frame Format
The following slides show the components of the SC PHY and OFDM PHY frames
PLCP preamble
SIGNAL
DATA
The modulation and coding schemes used in respective components are given
The generic frame format for SC PHY and OFDM PHY are the same
PLCP preamble structure for SC PHY and OFDM PHY are the same
SIGNAL field structure for SC PHY and OFDM PHY are the same
Hiroshi Harada, NICT

21. SC PHY Frame Format ~ General ~
May 2010
SC PHY Frame Format ~ General ~
PLCP Preamble
SIGNAL
DATA
Modulation
p/2 BPSK
p/2 BPSK, p/2 QPSK, p/2 8PSK, p/2 16-QAM
FEC
N/A
RS(23,7)
RS(255,239), LDPC(672,336), LDPC(672,504), LDPC(672,588)
Spreading factor
64, 2
64, 4, 2, 1
Hiroshi Harada, NICT

22. OFDM PHY Frame Format ~ General ~
May 2010
OFDM PHY Frame Format ~ General ~
PLCP Preamble
SIGNAL
DATA
Modulation
p/2 BPSK
QPSK-OFDM
QPSK,-OFDM 16-QAM-OFDM, 64-QAM-OFDM
FEC
N/A
LDPC(672,336)
LDPC(672,336), LDPC(672,504), LDPC(672,588)
Spreading factor 1
Hiroshi Harada, NICT

23. SC and OFDM PHY Frame Format ~ PLCP Preamble for CMS ~
May 2010
SC and OFDM PHY Frame Format ~ PLCP Preamble for CMS ~
CMS Preamble
Hiroshi Harada, NICT

24. SC and OFDM PHY Frame Format ~ PLCP Preamble for SC PHY and OFDM PHY ~
May 2010
SC and OFDM PHY Frame Format ~ PLCP Preamble for SC PHY and OFDM PHY ~
SC Preamble
OFDM Preamble
Hiroshi Harada, NICT

25. SC and OFDM PHY Frame Format ~ PLCP Preamble Golay Sequences ~
May 2010
SC and OFDM PHY Frame Format ~ PLCP Preamble Golay Sequences ~
Golay Sequence Name
Sequence Values
a128
C963AFFAC99CAF05C963AF
b128
0A396C5F0AC66CA0F5C693A00AC66CA0
a256 = [b128 a128 ]
b256 = [b128 a128 ]
Hiroshi Harada, NICT

26. PHY Frame Format ~ SIGNAL ~
May 2010
PHY Frame Format ~ SIGNAL ~
Scrambler ID
Aggregation
MCS
Frame Length
Pilot Word
Length
Reserved
PHY header (5 octets) contains
Scrambler ID (4 bits)
Information on scrambling seed
Aggregation (1 bit)
indicates whether aggregation is used
MCS (5 bits)
indicates the modulation and coding information of DATA
Frame length (20 bits)
Indicates the length of the frame
Pilot Word Length (2 bit)
indicates the type of pilot word length in DATA, ignored in OFDM PHY
Reserved (8 bits)
Hiroshi Harada, NICT

27. SC PHY PLCP SIGNAL Construction
May 2010
SC PHY PLCP SIGNAL Construction
Hiroshi Harada, NICT

28. SC PHY DATA Construction
May 2010
SC PHY DATA Construction
Hiroshi Harada, NICT

29. OFDM PHY PLCP SIGNAL Construction
May 2010
OFDM PHY PLCP SIGNAL Construction
Hiroshi Harada, NICT

30. OFDM PHY DATA Construction
May 2010
OFDM PHY DATA Construction
Hiroshi Harada, NICT

31. Results of PHY Simulation
May 2010
Results of PHY Simulation
Hiroshi Harada, NICT

32. Simulation Parameters for Single Carrier PHY Evaluation
May 2010
Simulation Parameters for Single Carrier PHY Evaluation
Description
Value
Unit
Symbol Rate
1760
Mchips/s
SymbolDuration
~0.568 ns
Sublock Length
512
chips
Pilot Word length 64
Data symbols per subblock
448
Subblock Duration
~290.9
Subblock rate
~3.44
MHz
Hiroshi Harada, NICT

33. Simulation Channel Model
May 2010
Simulation Channel Model
AWGN channel model
Fading channel model and scenarios
Living Room (LR)
Omni to Omni LOS
Omni to Direction NLOS
Directional to Directional NLOS
Conference Room (CR)
Hardware impairments as described in evaluation documents are considered in the simulation
Hiroshi Harada, NICT

34. SC PHY MCSs May 2010 MCS Class MCS Index Data Rate Modulation FEC
Coding Rate
Data
Spreading
Factor
PW=64
PW=0
SC Class 1
0 *
26 Mbps
p/2-BPSK
RS (255,239)
0.937 64 1
361 Mbps
412Mbps 4 2
722 Mbps
825Mbps
3 *
Mbps
1650 Mbps
1160 Mbps
1320 Mbps
LDPC(672,504)
0.75 5
385 Mbps
440 Mbps
LDPC(672,336)
0.5 6
880 Mbps
SC Class 2 7
1760 Mbps
p/2-QPSK 8
2640 Mbps 9
2700 Mbps
3080 Mbps
LDPC(672,588)
0.875 10
3300 Mbps
SC Class 3 11
3470 Mbps
3960 Mbps
p/2-8PSK 12
4620 Mbps
5280 Mbps
p/2-16QAM
Hiroshi Harada, NICT

35. May 2010
SC All MCSs AWGN PER
Hiroshi Harada, NICT

36. Living Room Omni-Omni-LOS
May 2010
Living Room Omni-Omni-LOS
PA Backoff Power:
MCS0: 0.5dB
MCS1: 0.5dB
MCS2: 0.5dB
MCS3: 0.5dB
MCS4: 0.5dB
MCS5: 0.5dB
MCS6: 0.5dB
MCS7: 5dB
MCS8: 5dB
MCS9: 5dB
MCS10: 6dB
MCS11: 5dB
MCS12: 5dB
Hiroshi Harada, NICT

37. Conference Room Omni-Omni-LOS
May 2010
Conference Room Omni-Omni-LOS
PA Backoff Power:
MCS0: 0.5dB
MCS1: 0.5dB
MCS2: 0.5dB
MCS3: 0.5dB
MCS4: 0.5dB
MCS5: 0.5dB
MCS6: 0.5dB
MCS7: 5dB
MCS8: 5dB
MCS9: 5dB
MCS10: 6dB
MCS11: 5dB
MCS12: 5dB
Hiroshi Harada, NICT

38. Living Room Omni-Directional-NLOS
May 2010
Living Room Omni-Directional-NLOS
PA Backoff Power:
MCS0: 0.5dB
MCS1: 0.5dB
MCS2: 0.5dB
MCS3: 0.5dB
MCS4: 0.5dB
MCS5: 0.5dB
MCS6: 0.5dB
MCS7: 5dB
MCS8: 5dB
MCS9: 5dB
MCS10: 6dB
MCS11: 5dB
MCS12: 5dB
Hiroshi Harada, NICT

39. Conference Room Omni-Directional-NLOS
May 2010
PA Backoff Power:
MCS0: 0.5dB
MCS1: 0.5dB
MCS2: 0.5dB
MCS3: 0.5dB
MCS4: 0.5dB
MCS5: 0.5dB
MCS6: 0.5dB
MCS7: 5dB
MCS8: 5dB
MCS9: 5dB
MCS10: 6dB
MCS11: 5dB
MCS12: 5dB
Hiroshi Harada, NICT

40. Living Room Directional-Directional-NLOS
May 2010
Living Room Directional-Directional-NLOS
PA Backoff Power:
MCS0: 0.5dB
MCS1: 0.5dB
MCS2: 0.5dB
MCS3: 0.5dB
MCS4: 0.5dB
MCS5: 0.5dB
MCS6: 0.5dB
MCS7: 5dB
MCS8: 5dB
MCS9: 5dB
MCS10: 6dB
MCS11: 5dB
MCS12: 5dB
Hiroshi Harada, NICT

41. Conference Room Directional-Directional-NLOS
May 2010
Conference Room Directional-Directional-NLOS
PA Backoff Power:
MCS0: 0.5dB
MCS1: 0.5dB
MCS2: 0.5dB
MCS3: 0.5dB
MCS4: 0.5dB
MCS5: 0.5dB
MCS6: 0.5dB
MCS7: 5dB
MCS8: 5dB
MCS9: 5dB
MCS10: 6dB
MCS11: 5dB
MCS12: 5dB
Hiroshi Harada, NICT

42. Simulation Parameters for OFDM PHY Evaluation
May 2010
Simulation Parameters for OFDM PHY Evaluation
Description
Value
Unit
Nominal Bandwidth
2640
MHz
Number of Subcarriers
512
Number of Data Subcarriers
336
Number of Reserved Subcarriers 16
Number of Pilot Subcarriers
Number of NULL Subcarriers
141
Number of DC Subcarriers 3
Subcarrier Frequency Spacing
FFT period
~193.94 ns
Guard Interval Duration
~24.24
OFDM Symbol Duration
~218.18
Packet Size
6720
Bytes
Hiroshi Harada, NICT

43. OFDM PHY MCSs May 2010 MCS Class Data Rate Modulation FEC Coding Rate
Spreading
OFDM Class 1
1540
QPSK
LDPC(672,336)
0.5 1
OFDM Class 2
2310
LDPC(672,504)
0.75
2695
LDPC(672,588)
0.875
OFDM Class 3
3080
16-QAM
4620
5390
6930
64-QAM
Hiroshi Harada, NICT

44. May 2010
OFDM on AWGN
Hiroshi Harada, NICT

45. OFDM MCSs on Channel model #1- Living room, Omni Tx, Omni Rx, LOS
May 2010
OFDM MCSs on Channel model #1- Living room, Omni Tx, Omni Rx, LOS
PA Backoff Power:
QPSK(1/2): 10dB
QPSK(3/4): 10dB
QPSK(7/8): 10dB
16QAM(1/2): 14dB
16QAM(3/4) :14dB
16QAM(7/8): 14dB
64QAM(3/4): 14dB
Hiroshi Harada, NICT

46. May 2010
OFDM MCSs on Channel model #2- Living room, Omni Tx, Directional Rx, NLOS
PA Backoff Power:
QPSK(1/2): 10dB
QPSK(3/4): 10dB
QPSK(7/8): 10dB
16QAM(1/2): 14dB
16QAM(3/4) :14dB
16QAM(7/8): 14dB
64QAM(3/4): 14dB
Hiroshi Harada, NICT

47. May 2010
OFDM MCSs on Channel model #3-Living room, Directional Tx, Directional Rx, NLOS
PA Backoff Power:
QPSK(1/2): 10dB
QPSK(3/4): 10dB
QPSK(7/8): 10dB
16QAM(1/2): 14dB
16QAM(3/4) :14dB
16QAM(7/8): 14dB
64QAM(3/4): 14dB
Hiroshi Harada, NICT

48. OFDM MCSs on Channel model #4- Conference room, Omni Tx, Omni Rx, LOS
May 2010
OFDM MCSs on Channel model #4- Conference room, Omni Tx, Omni Rx, LOS
PA Backoff Power:
QPSK(1/2): 10dB
QPSK(3/4): 10dB
QPSK(7/8): 10dB
16QAM(1/2): 14dB
16QAM(3/4) :14dB
16QAM(7/8): 14dB
64QAM(3/4): 14dB
Hiroshi Harada, NICT

49. May 2010
OFDM MCSs on Channel model #5- Conference room, Omni Tx, Directional Rx, NLOS
PA Backoff Power:
QPSK(1/2): 10dB
QPSK(3/4): 10dB
QPSK(7/8): 10dB
16QAM(1/2): 14dB
16QAM(3/4) :14dB
16QAM(7/8): 14dB
64QAM(3/4): 14dB
Hiroshi Harada, NICT

50. May 2010
OFDM MCSs on Channel model #6- Conference room, Directional Tx, Directional Rx, NLOS
PA Backoff Power:
QPSK(1/2): 10dB
QPSK(3/4): 10dB
QPSK(7/8): 10dB
16QAM(1/2): 14dB
16QAM(3/4) :14dB
16QAM(7/8): 14dB
64QAM(3/4): 14dB
Hiroshi Harada, NICT

51. FA/MD of Proposed SC SFD
May 2010
FA/MD of Proposed SC SFD
a: NICT SC SFD; b: NICT OFDM SFD
c: c MR SFD; d: c HR SFD
e: c CTAP SFD; f: c CAP SFD
Hiroshi Harada, NICT

52. FA/MD of Proposed OFDM SFD
May 2010
FA/MD of Proposed OFDM SFD
a: NICT OFDM SFD; b: NICT SC SFD
c: c MR SFD; d: c HR SFD
e: c CTAP SFD; f: c CAP SFD
Hiroshi Harada, NICT

53. Section 2: MAC Proposal for 802.11ad
May 2010
Section 2: MAC Proposal for ad
Hiroshi Harada, NICT

54. Presentation Outline (MAC Layer)
May 2010
Presentation Outline (MAC Layer)
Part1: Overview of the proposed ad MAC
Concept
Basic MAC
Enhanced MAC
High level MAC operations
Part2: Enhanced MAC
Contention-free period (CFP) scheduling
Enhanced data transmission
Enhanced co-existence
Directivity support
Part3: MAC Simulation Results
Point to point link
Home living room
Office conference room
Hiroshi Harada, NICT

55. Part1: Overview of the proposed 802.11ad MAC
May 2010
Part1: Overview of the proposed ad MAC
Hiroshi Harada, NICT

56. Concept for Proposed 802.11ad MAC
May 2010
Concept for Proposed ad MAC
Proposed ad MAC contains Basic MAC to maintain user experience, and Enhanced MAC to achieve very high throughput and to support directivity and co-existence
802.11ad MAC
Basic MAC based on
Enhanced MAC for
Very High Throughput, Directivity and Co-existence +
Hiroshi Harada, NICT

57. May 2010
Basic MAC
All basic functionalities of ad MAC are based on and other available amendments to support user experience
Basic MAC functions
Scan
Association/Re-associaton/Disassociation
Authentication/Dis-authentication
Channel Accesses – DCF, PCF, HCF, HCCA
Other functions – synchronization, power management, security, etc.
Hiroshi Harada, NICT

58. May 2010
Enhanced MAC
Enhanced MAC is designed to achieve very high throughput (>1Gbps), directivity support, coexistence with other 60GHz systems and QoS improvement
Enhanced MAC functions
Very High Throughput Achievement
Contention-Free Period (CFP) Scheduling
Enhanced data transmission in CFP
Frame aggregation & Aggregation-ACK
Bi-directional aggregation with ACK
Directivity Support
Directional association
Beamforming
Co-existence Support
Co-existence among homogeneous systems
Co-existence among heterogeneous systems
Hiroshi Harada, NICT

59. High-Level MAC Operations in 802.11ad
May 2010
High-Level MAC Operations in ad
Hiroshi Harada, NICT

60. Part2: Details of Enhanced MAC
May 2010
Part2: Details of Enhanced MAC
Hiroshi Harada, NICT

61. Contention-Free Period Scheduling
May 2010
Contention-Free Period Scheduling
Contention-Free Period (CFP) scheduling supports enhanced data transmission
Dynamically scheduled CFP guarantees the high throughput and delay requirements of 60GHz applications
B (Beacon)
TS (Traffic Stream)
CP (Contention Period)
CFP(Contention Free Period)
(Example of contention-free period scheduling)
Hiroshi Harada, NICT

62. Enhanced Data Transmission
May 2010
Enhanced Data Transmission
Enhanced data transmission in CFP includes beamforming support, frame aggregation/aggregation-ACK
Beamforing period in CFP guarantees the beamform procedure free from interference
Frame aggregation / Aggregation-ACK/ Bi-directional aggregation with is provided to meet QoS requirements of throughput and delay
On-demand aggregation is performed with negotiation between Src/Dest
(Example of data transmission during CFP)
Hiroshi Harada, NICT

63. Aggregation / Aggregation ACK / Bi-directional aggregation with ACK
May 2010
Aggregation / Aggregation ACK / Bi-directional aggregation with ACK
Proposed aggregation supports to aggregate video traffics (video aggregation MSDU, VA-MSDU)
VA-MSDU frame body consists of
MAC subheader with HCS and aggregated MSDUs with Subframe FCS (SFCS)
MAC subheader contains
Aggregated MSDUs information
Aggregation ACK (A-ACK) bitmap
VA-MSDU allows
maximum length of each MSDU (including SFCS) : 1Mbytes
maximum length of aggregated MSDUs : 16Mbytes
Bi-directional VA-MSDU by using both of aggregation and aggregation ACK bitmap
SFCS (Subframe FCS)

64. Negotiation for Aggregation
May 2010
Negotiation for Aggregation
Negotiation for Aggregation
for capability confirmation
in CFP or CP
on-demand between Src and Dest
directly between AP and STAs
directly between STA and STA after Directed Link Setup (DLS) defined in
Neg.
DLS
Neg.
Neg. Case 1 : communication between AP and STAs
Neg. Case 2 : communication between STA and STA
Hiroshi Harada, NICT

65. Virtual Traffic Stream
May 2010
Virtual Traffic Stream
Virtual Traffic Stream (VTS) supports enhanced throughput by spatial reuse
The Probing Stage determines the TSs that are able to coexist within the same time (low or no mutual interference), then schedule them to share the same time slot
Hiroshi Harada, NICT

66. May 2010
Directivity Support
Directivity support for ad system includes directional association and beamforming
Directional association
Directional beacons (up to 4 beacons) and Directional contention periods (CPs) enable STAs to associate to AP directionally
Beamforming
Beamforming protocol is based on 11/496r0
Q-beacon (Directional Quasi-omni beacon)
GT (Guardtime)
Hiroshi Harada, NICT

67. Directional Association Example
May 2010
Directional Association Example AP
broadcasts beacons to the supported directions
determines the directional beacon interval appropriately
STAs
scan beacons on the supported directions
associate with AP on the directional CP
Hiroshi Harada, NICT

68. Enhanced Co-existence (1/4) - Co-existence for homogeneous systems -
May 2010
Enhanced Co-existence (1/4) - Co-existence for homogeneous systems -
Enhanced co-existence provides co-existence among homogeneous systems and among heterogeneous systems
Co-existence for homogeneous systems provides QoS assurance during CFP
Avoid mutual interference by overlapping homogenous networks to data transmission during CFP
Hiroshi Harada, NICT

69. Enhanced Co-existence (2/4) - Co-existence for homogeneous systems -
May 2010
Enhanced Co-existence (2/4) - Co-existence for homogeneous systems -
Co-existence action frame (CAF) supports avoiding mutual interference by overlapping homogenous networks to data transmission during CFP
CAF includes schedule information of CFP
STAs periodically sends out CAFs for potentially incoming homogeneous networks
STAs scan CAFs before transmitting data during CFP
Hiroshi Harada, NICT

70. Enhanced Co-existence (3/4) - Co-existence for heterogeneous systems -
May 2010
Enhanced Co-existence (3/4) - Co-existence for heterogeneous systems -
There are two 60GHz unlicensed wireless system specifications in the IEEE 802 ( c and ad)
A mechanism is proposed to facilitate coexistence between c and ad while minimizing the additional complexity in implementation
The co-existence mechanism is based on the document 10/0231r3 (John R. Barr）
Hiroshi Harada, NICT

71. Enhanced Co-existence (4/4) - Co-existence for heterogeneous systems -
April 2009
doc.: IEEE /xxxxr0
May 2010
Enhanced Co-existence (4/4) - Co-existence for heterogeneous systems -
To detect other 60GHz systems operating in the same channels, the BSSs in the vicinity have a quiet period to create a clear channel
The quiet periods scheduled by different BSSs partially align to prevent the signal from adjacent BSS interfering the detection of other systems. B B B
BSS1
Quiet
Quiet
Quiet B B B
BSS2
Quiet
Quiet
Quiet B B B
BSS3
Quiet
Quiet
Quiet B
AP1 requests AP2 and AP3 to align their quiet periods for interference detection
Beacon
BSS3
Quiet
Quiet period
BSS1
BSS2 DS
Hiroshi Harada, NICT
Rich Kennedy, Research In Motion

72. Part3: System Evaluation
May 2010
Part3: System Evaluation
Hiroshi Harada, NICT

73. May 2010
Abstract
The PHY abstraction and antenna model for system simulation are provided
Assumptions and simulation parameters are summarized for each scenario
The following simulation are performed to show how the proposal meets the requirements
Point to point link simulation
Home living room simulation
Office conference room simulation
Hiroshi Harada, NICT

74. PHY Abstraction and Antenna Model
May 2010
PHY Abstraction and Antenna Model
PHY abstraction
Simulation results in slides are used for PHY abstract
The path loss model for all the scenarios defined in 0334/r7are implemented in MAC simulations
The human blockage model defined in 0334/r7 is implemented
Antenna model
It is assumed in MAC simulation that beam forming procedure has been completed before data transmission
The peak gain directions of the sender STA and receiver STA are aligned before the data transmission is started
Peak gain of the TX/RX antenna: 14dBi
Coverage range: 60 degree
Hiroshi Harada, NICT

75. May 2010
Scheduling Algorithm
Traffics are classified into two categories, isochronous and asynchronous traffic
Uncompress video and lightly compressed video are considered as isochronous traffic
Hard disk file transfer, local data transfer and web browsing are considered as asynchronous traffic
Both isochronous traffic and asynchronous traffic use CFP for data transmission
A TS is created for each traffic and corresponding time slots are allocated
For isochronous traffic
The time slots are allocated in each BIs until the TS is terminated
For asynchronous traffic
The time slots are released after the end of current BI
New time slots in the following BIs need to be allocated if there is still data waiting in the queue for transmission
EDCA is adopted to coordinate the TS allocations based on TS requests from different STAs
Access chategories
Traffic
AC_VI
Uncompressed video and lightly compressed video
AC_BE
Hard disk file transfer and local file transfer
AC_BK
Web browsing
Hiroshi Harada, NICT

76. Part3-1: Point to Point link Simulation
May 2010
Part3-1: Point to Point link Simulation
Req 01 – at least 1Gbps at MAC SAP
Req 02 – at least 1Gbps PHY rate
Req 03 – 1Gbps at 10 meters
Hiroshi Harada, NICT

77. Simulation Parameters
May 2010
Simulation Parameters
MCSs
SC-MCS 8
2640Mbps
Pi/2QPSK/LDPC
ACK policies
No-ACK
Immediate-ACK
Aggregation-ACK (A-ACK)
MSDU length
8KB
Aggregation
Number of Subframes
8 subframes
Length of Subframe
8KB, 128KB
IFS
MIFS
0.5us
SIFS
2.5us
Simulation Time
10 minutes
CFP and CP timing
CFP = 9ms
CP = 1ms
Distance between Point and Point
10m
Hiroshi Harada, NICT

78. May 2010
Simulation Results
Simulation results show the functional requirements [Req01, Req02, Req03] in point-to-point link simulation are fulfilled
Req 01: at least 1Gbps at MAC SAP
Req 02: at least 1Gpbs PHY rate
Req 03: 1Gbps at 10 meters
Goodput
SC-MCS 8 (2640Mbps,QPSK/LDPC (672, 504))
No-ACK
1.94Gbps
Imm-ACK
1.41Gbps
A-ACK (8KB)
1.86Gbps
A-ACK(128KB)
1.99Gbps
Average SNR of 14.28dB for 10m Point-to-Point link
Hiroshi Harada, NICT

79. Part3-2: Home Living Room Simulation
May 2010
Part3-2: Home Living Room Simulation
Req 04 - Uncompressed Video of 3Gbps
Req 05 - Packet Loss Rate 1e-8
Req 06 – Delay 10ms
Hiroshi Harada, NICT

80. Simulation Parameters
May 2010
Simulation Parameters
MCSs
SC-MCS 12
5280Mbps
16QAM/LDPC
Used ACK policies
No-ACK
Immediate-ACK
Aggregation-ACK (A-ACK)
Aggregation
Number of Subframes 8
Length of Subframe
8KB, 128KB, 1MB
IFS
MIFS
0.5us
SIFS
2.5us
Simulation Time
10 minutes
Human blockage interval
Human blockage appears every 1s
CFP and CP timing
CFP = 9.5ms
CP = 0.5ms
Distance between AP and STA 2m
Hiroshi Harada, NICT

81. CFP Allocation for Data Transmission in Home Living Room
May 2010
CFP Allocation for Data Transmission in Home Living Room
Hiroshi Harada, NICT

82. May 2010
Simulation Results
MCS 12 with No-ACK and MCS 12 with Aggregation ACKs (A-ACKs) meet the requirements of goodput (>1Gbps), delay (<10ms) and packet loss rate (1e-8) in home living room
Goodput (>1Gbps)
Delay (<10ms)
Packet Loss
SC-MCS 12 (5280Mbps,16QAM/LDPC)
No-ACK
2.98Gbps
7.0ms 0%
Imm-ACK
2.52Gbps
11.7ms
15%
A-ACK (8KB)
6.7ms
A-ACK(128KB)
5.6ms
A-ACK(1MB)
6.1ms
Average SNR of 24.77dB for 2m AP-STA
The results of goodput, delay and packet loss rate in home blockage are given in the backup slide (A)
Hiroshi Harada, NICT

83. Part3-2: Office Conference Room Simulation
May 2010
Part3-2: Office Conference Room Simulation
Hiroshi Harada, NICT

84. May 2010 ・2 to 1 ・9 to 2 ・3 to 5 ・4 to 9 ・5 to 3 ・7 to 8 ・9 to 7 ・3 ・4
COMPRESSED_VIDEO
・2 to 1
FTP( file transfer )
・9 to 2
・3 to 5
・4 to 9
・5 to 3
・7 to 8
・9 to 7
HTTP ・3 ・4 ・5 ・6
Hiroshi Harada, NICT

85. CFP Allocation for Data Transmission in Office Conference Room
May 2010
CFP Allocation for Data Transmission in Office Conference Room
Number of traffics during CFP
1 Lightly Compressed Video traffic
6 FTP traffics
4 HTTP traffics
Hiroshi Harada, NICT

86. Simulation Parameters
May 2010
Simulation Parameters
MCSs
SC-MCS 3
1650Mbps
BPSK/RS
Used ACK policies
No-ACK
Immediate-ACK
Aggregation-ACK (A-ACK)
Aggregation
Number of Subframes 8
Length of Subframe
8KB, 128KB, 1MB
IFS
MIFS
0.5us
SIFS
2.5us
Simulation Time
10 minutes
Human blockage interval -
CFP and CP timing
CFP = 9ms
CP = 1ms
Hiroshi Harada, NICT

87. Result for Office Conference Room
May 2010
Result for Office Conference Room
This result shows the performance of FTP and HTTP traffic when the video traffic is satisfied the requirements of goodput (600Mbps) and delay (<10ms) on SC-MCS3
Goodput
Delay (10ms)
Packet Loss
TS allocation
SC-MCS 3 (1650Mbps, BPSK/RS)
Video traffic
No-ACK
0.6Gbps
2.7ms 0%
4.4ms
Imm-ACK
2.5ms
5.1ms
A-ACK (8KB)
2.8ms
4.2ms
FTP traffic
23.4Mbps
10ms
2.6ms
25.5Mbps
9.9ms
4.7ms
24.4Mbps
2.2ms
HTTP traffic
0.637Mbps
10.1ms
0.04ms
0.624Mbps
11.9ms
0.1ms
0.638Mbps
10.3ms
0.07ms
Addition simulation results are shown in the backup slide (B)
Hiroshi Harada, NICT

88. Part4: PAR, FRD and EVM declaration
May 2010
Part4: PAR, FRD and EVM declaration
Hiroshi Harada, NICT

89. PAR and FRD declaration
May 2010
PAR and FRD declaration ID
Subclasue of FRD
Requirement
Declaration
FRD.1
2.1.1 Maximum throughput
[Req01]
Slide 78 show simulation results that the complete proposal achieves a maximum throughput of at least 1 Gbps, as measured at the MAC SAP.
[Req02]
Slide 13 show that MCS 3 shall be mandatory for all the devices. MCS 3 provides a PHY rate of Gbps.
The PHY performance are shown in slides
FRD.2
2.1.2 Range
[Req03]
Slide 78 show simulation results that the complete proposal achieves a range of at least 10 m at 1 Gbps, as measured at the MAC SAP, in a NLOS channel.
FRD.3
2.1.3 Video requirements
[Req04]
Slide 82 show simulation results for uncompressed video where the required application data rate of 3 Gbps is achieved at the MAC SAP by the complete proposal.
[Req05]
Slide 82 show simulation results for uncompressed video where the packet loss rate is below 1e-8 for a 8Kbyte payload size.
[Req06]
Slide 82 show simulation results for uncompressed video where the delay is below 10ms.
Hiroshi Harada, NICT

90. PAR and FRD declaration (cont.)
May 2010
PAR and FRD declaration (cont.) ID
Subclasue of FRD
Requirement
Declaration
FRD.4
2.2 Fast session transfer
[Req07]
10/499r1 describes multi-band operation
FRD.5
2.3 Coexistence
[Req08]
Slides describe the mechanisms to enable coexistence with other systems in the band, including c.
FRD.6
user experience
[Req09]
Slide 56 of the complete proposal describes that the network architecture of is fully maintained.
[Req10]
Slide 56 of the complete proposal describe that the proposal is fully backward compatible with the management plane. The MLME is fully reused.
FRD.7
[Req11]
The PICS is defined in Annex A of the complete proposal.
Hiroshi Harada, NICT

91. EVM Declaration May 2010 ID Subclasue of EVM Declaration EVM.1
2.1 Point-to-point link simulations
Slides 76-78
EVM.2
2.2 Link budget parameters for FR Section (range requirement – Req03)
EVM.3
2.3 Coexistence for FR Section 2.3
Slides 68-70
EVM.4
3 PHY Performance
Slides 31-52
EVM.5
4 System evaluation
Slides 72-78
Hiroshi Harada, NICT

92. May 2010
Conclusion
This document proposes the PHY and MAC layer design for ad operating in the 60GHz band
PHY layer design
A hybrid PHY designed consisting of the SC PHY and the OFDM PHY is proposed
Channelization of the 60GHz band is presented
Data rate modes of respective PHYs are listed
Common Mode Signaling bridging across two PHYs is introduced
Frame format for respective PHYs are presented
MAC layer design
Proposed MAC contains Basic MAC and Enhanced MAC
Basic MAC is based on and other amendments to support user experience
Enhanced MAC is designed to achieve very high throughput (>1Gbps), directivity support, coexistence with other 60GHz systems and QoS improvement
PAR, FRD and EVM declaration is provided
Hiroshi Harada, NICT

93. Backup (A) : Home Living Room (with human blockage)
May 2010
Backup (A) : Home Living Room (with human blockage)
Goodput (>1Gbps)
Delay (10ms)
Packet Loss
SC-MCS 12 (5280Mbps,16QAM/LDPC)
No-ACK
2.35Gbps
7.0ms
20%
Imm-ACK
1.92Gbps
15.8ms
35%
A-ACK (8KB)
12.6ms
A-ACK(128KB)
2.36Gbps
12.1ms
A-ACK(1MB)
12.2ms
SNR taking into account human blockage
that appears every 1s
Hiroshi Harada, NICT

94. May 2010
Backup (B) : Office Conference Room (1/2) Goodput, Delay and Packet Loss per Link
Goodput [Mbps]
MSDU Delay [msec]
Packet Loss Ratio [%]
SC-MCS 3 (1650Mbps, BPSK/RS)
BLOCK_ACK(8K)
FTP AP->STA2
10.352
FTP AP->STA7
10.347
FTP STA3->STA5
10.103
FTP STA4->AP
10.356
FTP STA5->STA3
10.18
FTP STA7->STA8
9.608
HTTP STA3->AP
10.555
HTTP STA4->AP
10.707
HTTP STA5->AP
9.906
HTTP STA6->AP
10.23
VIDEO STA2->STA1
IMM_ACK
9.887
9.878
10.193
10.174
9.91
11.775
13.879
12.096
NO_ACK
10.236
10.242
10.057
10.241
9.925
9.696
9.914
10.385
10.297
113.59
10.068
Hiroshi Harada, NICT

95. May 2010
Backup (B) : Office Conference Room (2/2) Goodput, Delay and Packet Loss in Human Blockage
Goodput
Delay (10ms)
Packet Loss
SC-MCS 3 (1650Mbps, BPSK/RS)
Video traffic
No-ACK
0.6Gbps
2.7ms 0%
Imm-ACK
2.5ms
A-ACK (8KB)
2.8ms
FTP traffic
18.2Mbps
10.1ms
20.4Mbps
10.2ms
19.1Mbps
10.4ms
HTTP traffic
0.768Mbps
0.753Mbps
11.9ms
0.770Mbps
Human blockage occurs every 1s
Hiroshi Harada, NICT

96. May 2010
Reference
Function requirements: ad-functional-requirements
Channel model document: ad-channel-models-for-60-ghz-wlan-systems
Evaluation methodology: ad-evaluation-methodology
Hiroshi Harada, NICT

97. May 2010
Strawpoll
“Do you support adopting the whole or part of the complete proposal in 10/0498r0 as the material to create the first draft of the TGad amendment?”
Yes, No, Abstain