1. TGn Sync Complete Proposal
Month 2002
doc.: IEEE /888r1
September 2004
TGn Sync Complete Proposal
Date: September 14th, 2004
Aon Mujtaba, Agere Systems Inc.,
Adrian P Stephens, Intel Corporation,
Alek Purkovic, Nortel Networks
Andrew Myles, Cisco Systems
Brian Johnson, Nortel Networks Corporation,
Chiu Ngo, Samsung Electronics Co. Ltd.,
Daisuke Takeda, Toshiba Corporation,
Darren McNamara, Toshiba Corporation,
Dongjun (DJ) Lee, Samsung Electronics Co. Ltd.,
David Bagby, Calypso Consulting,
Eldad Perahia, Cisco Systems,
Huanchun Ye, Atheros Communications Inc.,
Hui-Ling Lou, Marvell Semiconductor Inc.,
James Chen, Marvell Semiconductor Inc.,
James Mike Wilson, Intel Corporation,
Jan Boer, Agere Systems Inc.,
Jari Jokela, Nokia,
Jeff Gilbert, Atheros Communications Inc.,
Job Oostveen, Royal Philips Electronics,
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

2. Authors (continued) Month 2002 doc.: IEEE 802.11-04/888r1
September 2004
Authors (continued)
Joe Pitarresi, Intel Corporation,
Jörg Habetha, Royal Philips Electronics,
John Sadowsky, Intel Corporation,
Jon Rosdahl, Samsung Electronics Co. Ltd.,
Luke Qian, Cisco Systems,
Mary Cramer, Agere Systems
Masahiro Takagi, Toshiba Corporation,
Monisha Ghosh, Royal Philips Electronics,
Nico van Waes, Nokia,
Osama Aboul-Magd, Nortel Networks Corporation,
Paul Feinberg, Sony Electronics Inc.,
Pen Li , Royal Philips Electronics
Peter Loc, Marvell Semiconductor Inc.,
Pieter-Paul Giesberts, Agere Systems Inc.,
Richard van Leeuwen, Agere Systems Inc.,
Ronald Rietman, Royal Philips Electronics,
Seigo Nakao, SANYO Electric Co. Ltd.,
Sheung Li, Atheros Communications Inc.,
Stephen Shellhammer, Intel,
Taekon Kim, Samsung Electronics Co. Ltd.,
Takashi Fukagawa, Panasonic,
Takushi Kunihiro, Sony Corporation,
Teik-Kheong (TK) Tan, Royal Philips Electronics,
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

3. Authors (continued) Month 2002 doc.: IEEE 802.11-04/888r1
September 2004
Authors (continued)
Tomoko Adachi, Toshiba Corporation,
Tomoya Yamaura, Sony Corporation,
Tsuguhide Aoki, Toshiba Corporation,
Victor Stolpman, Nokia,
Won-Joon Choi, Atheros Communications Inc.,
Xiaowen Wang, Agere Systems Inc.,
Yasuhiko Tanabe, Toshiba Corporation,
Yasuhiro Tanaka, SANYO Electric Co. Ltd.,
Yoshiharu Doi, SANYO Electric Co. Ltd.,
Youngsoo Kim, Samsung Electronics Co. Ltd.,
Yuichi Morioka, Sony Corporation,
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

4. TGn Sync Proposal Team - Background
Month 2002
doc.: IEEE /888r1
September 2004
TGn Sync Proposal Team - Background
Team operated as a technical group to help motivate a rapid introduction of the n standard
Participating companies from a broad range of markets PC
Enterprise
Consumer Electronics
Semiconductor
Handset
Public Access
Solution incorporates a worldwide perspective of perceived market demand and regulatory concerns
Representation from North America, Europe and Asia Pacific regions
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

5. Proposal Overview High throughput and minimal design complexity
Month 2002
doc.: IEEE /888r1
September 2004
Proposal Overview
High throughput and minimal design complexity
Superior robustness for a broad range of applications
Low cost
Low power
Scalable architecture
Seamless interoperability with legacy devices
Offering global compliance and interoperability in all major regulatory domains
Includes support for licensed 10MHz modes
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

6. PHY Summary of TGn Sync Proposal
Month 2002
doc.: IEEE /888r1
September 2004
PHY Summary of TGn Sync Proposal
MIMO evolution of OFDM PHY – up to 4 spatial streams
20 and 40MHz* channels – fully interoperable
2x2 architecture – 140Mbps in 20MHz and 315Mbps in 40MHz
Scalable up to 630Mbps
Preamble allows seamless interoperability with legacy a/g
Optional enhancements
Transmit beamforming with negligible overhead at the client
Advanced channel coding techniques (RS, LDPC)
1/2 guard interval (i.e. 400ns)
7/8 rate coding
summary deck
*Not required in regulatory domains where prohibited.
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

7. MAC Summary of TGn Sync Proposal
Month 2002
doc.: IEEE /888r1
September 2004
MAC Summary of TGn Sync Proposal
Supports e
Frame aggregation, single and multiple* destinations
Bi-directional data flow
Link adaptation with explicit feedback and control of channel sounding packets
Protection mechanisms for seamless interoperability and coexistence with legacy devices
Channel management (including management of 20/40MHz operating modes)
Power management for MIMO receivers
summary deck
* Optional
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

8. PHY Month 2002 doc.: IEEE 802.11-04/888r1 September 2004 summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

9. PHY Architectural Features
Month 2002
doc.: IEEE /888r1
September 2004
PHY Architectural Features
Throughput enhancement:
Spatial division multiplexing using MIMO-OFDM
Bandwidth expansion  interoperable 20MHz and 40MHz*
Highest channel coding rate (i.e. 7/8)
Shortened guard interval (i.e. 400ns)
Robustness enhancement:
Orthogonal spatial spreading with cyclic delay
Transmit beamforming
Advanced coding
Max rate in 20MHz = 140Mbps
Max rate in 40MHz = 315Mbps
(with 2x2 architecture using 2 spatial streams)
SNR reduction of greater than 10dB
* Not required in regulatory domains where prohibited
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

10. Mapping Spatial Streams to Multiple Antennas
Month 2002
doc.: IEEE /888r1
September 2004
Mapping Spatial Streams to Multiple Antennas
Number of spatial streams = Number of TX antennas
1 spatial stream mapped to 1 antenna
Spatial division multiplexing
Equal rates on all spatial streams
Number of spatial streams ≤ Number of TX antennas
Each spatial stream mapped to all transmit antennas
Optional orthogonal spatial spreading
No channel state info at TX required
Optional transmit beamforming
Requires channel state info at TX
Supports unequal rates on different spatial streams
With per spatial stream training, no change needed at the RX
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

11. Month 2002
doc.: IEEE /888r1
September 2004
TX Arch: Spatial Division Multiplexing e.g. 2 Spatial streams with 2 TX antennas (mandatory)
Preamble
iFFT
Modulator
Pilots
insert GI
window
symbols
Frequency
Interleaver
Constellation
Mapper
Scrambled
MPDU
Channel Encoder
Puncturer
Preamble
iFFT
Modulator
Spatial parser
Pilots
insert GI
window
symbols
Frequency
Interleaver
Constellation
Mapper
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

12. Tone Design for 20 and 40 MHz 20 MHz: 40 MHz: Identical to 802.11a
Month 2002
doc.: IEEE /888r1
September 2004
Tone Design for 20 and 40 MHz
20 MHz:
Identical to a
64 point FFT
48 data tones
4 pilot tones
-26
-21 -7 -1 +1 +7
+21
+26
Tone Fill in the Guard Band
40 MHz:
128 point FFT
108 data tones
6 pilot tones
-53
-25
-11
+11
+25
+53
-64
-58
-32 -6 -2 +2 +6
+32
+58
+63
Legacy 20 MHz in
Lower Sub-Channel
Legacy 20 MHz in
Upper Sub-Channel
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

13. Motivation for 40MHz Channelization
Month 2002
doc.: IEEE /888r1
September 2004
Motivation for 40MHz Channelization
2x2 – 40 MHz
Only 2 RF chains => Cost effective & low power
Lower SNR at same throughput => Enhanced robustness
Sweet spot for 100 Mbps top-of-MAC
Basic MIMO MCS set
No impairments
1000 byte packets
TGn channel model B
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

14. Basic MCS Set Modulation Code Rate Data Rates* 20 MHz (Mbps)
Month 2002
doc.: IEEE /888r1
September 2004
Basic MCS Set
Modulation
Code Rate
Data Rates* 20 MHz (Mbps)
(1,2,3,4 spatial streams)
Data Rates* 40 MHz (Mbps)
BPSK
1/2
6, 12, 18, 24
6‡, 13.5, 27, 45.5, 54
QPSK
12, 24, 36, 48
27, 54, 81, 108
3/4
18, 35, 54, 72
40.5, 81, 121.5, 162
16 QAM
24, 48, 72, 96
54, 108, 162, 216
36, 72, 108, 144
81, 162, 243, 324
64 QAM
2/3
48, 96, 144, 192
108, 216, 324, 432
121.5, 243, 364.5, 486
7/8
63, 126, 189, 252
141.7, 283.5, 425.2, 567
‡ Duplicate format, BPSK R = ½ provides 6 Mbps for 40 MHz channels
* Optional short GI (0.4 sec) increases rates by 11.1%  highest data rate = 630 Mbps
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

15. HT-PPDU Format in 20MHz HT STF HT LTF-1 HT LTF-2 L-STF L-LTF L-SIG
Month 2002
doc.: IEEE /888r1
September 2004
HT-PPDU Format in 20MHz HT
STF HT
LTF-1 HT
LTF-2
L-STF
L-LTF
L-SIG
HT-SIG
HT-DATA
ANT_1
20MHz
ANT_2
L-STF
L-LTF
L-SIG
HT-SIG
HT-DATA
20MHz
Legacy Compatible Preamble
HT-specific Preamble
Legend
L- Legacy
HT- High Throughput
STF Short Training Field
LTF Long Training Field
SIG Signal Field
Legacy Compatible
Can be decoded by any legacy a or g compliant device for interoperability
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

16. HT-PPDU Format in 40MHz L-STF L-LTF L-SIG HT-SIG HT-DATA Duplicate
Month 2002
doc.: IEEE /888r1
September 2004
HT-PPDU Format in 40MHz
L-STF
L-LTF
L-SIG
HT-SIG
HT-DATA
Duplicate
Dup.
ANT_1
40MHz HT
STF HT
LTF-1 HT
LTF-2
L-STF
L-LTF
L-SIG
HT-SIG
HT-DATA
ANT_2
40MHz
Duplicate
L-STF
Duplicate
L-LTF
Dup.
L-SIG
Duplicate
HT-SIG
Legacy Compatible Preamble
HT-specific Preamble
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

17. Month 2002
doc.: IEEE /888r1
September 2004
Spoofing
Spoofing is the use of the legacy RATE and LENGTH fields to keep the legacy STA off the air for a desired period of time
The duration indicated in the L-SIG does not have to match the actual duration in the HT-SIG  MAC uses this as a protection mechanism
For a HT-PPDU, L-SIG RATE hard-coded at 6 Mbps
max MSDU length = 2304 Bytes  spoofing duration up to ~3 msec
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

18. HT PPDU Detection or Auto-detection scheme on HT-SIG
Month 2002
doc.: IEEE /888r1
September 2004
HT PPDU Detection
L-STF
L-LTF
L-SIG
HT-SIG or
L-STF
L-LTF
L-SIG
Legacy
DATA
Legacy Compatible Preamble
Auto-detection scheme on HT-SIG
Q-BPSK modulation (BPSK w/ 90-deg rotation)
Invert the polarity of the pilot tones
Combined methods provide speed and reliability
L-SIG reserved bit is not used
Legacy devices are using the “reserved bit” in undefined ways
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

19. MIMO AGC single spatial stream multiple spatial streams
September 2004
MIMO AGC
single spatial stream
multiple spatial streams
L-STF
L-LTF
L-SIG
HT-SIG
HT-DATA
AGC measurement
For MIMO, accurate AGC requires power estimate from each TX antenna to each RX antenna
If L-STF is used for MIMO AGC, require orthogonalization of L-STF across multiple TX antennas
Perfect orthogonality is achieved with tone interleaving
However, tone interleaving is incompatible with legacy receivers using cross correlation on the L-STF
Cyclic delay may be used to separate transmission paths, but the delay has to be limited to preserve the cross correlation property of the L-STF
However, limited cyclic delay results in AGC inaccuracy, as shown on the next slide
Syed Aon Mujtaba, Agere Systems, et. al.

20. Power Fluctuation with Cyclic Delay on the L-STF
September 2004
Power Fluctuation with Cyclic Delay on the L-STF
Data power 1
Power fluctuation with tone interleaving is within 1dB of the data power
0.9
STF = Tone Interleaved
STF = Cyclic Delay
0.8
2x2, TGn Channel D
SNR = 30dB
0.7
0.6
CDF(x)
0.5
Introduce a dedicated STF for MIMO that is tone interleaved
Reduces 1 bit in the ADC  cost & power savings
0.4
0.3
0.2
0.1 -7 -6 -5 -4 -3 -2 -1 1 2 3
x = Power fluctuation of AGC setting wrt data power (dB)
Syed Aon Mujtaba, Agere Systems, et. al.

21. Power Fluctuation of HT-LTF wrt Data
September 2004
Power Fluctuation of HT-LTF wrt Data
Data power 1
0.9
HT-LTF = Tone Interleaved
0.8
HT-LTF = Walsh + Cyclic Delay
Large deviation of HT-LTF power wrt data power will result in higher channel estimation error
0.7
2x2, TGn Channel D
SNR = 30dB
0.6
CDF(x)
0.5
0.4
0.3
0.2
HT-LTF should be tone interleaved
0.1
-10 -8 -6 -4 -2 2 4
x = Power fluctuation of HT-LTF wrt data (dB)
Syed Aon Mujtaba, Agere Systems, et. al.

22. Tone Interleaved HT Training Fields
Month 2002
doc.: IEEE /888r1
September 2004
Tone Interleaved HT Training Fields
summary deck
HT-STF
2nd AGC measurement is used to fine-tune MIMO reception
HT-LTF
Used for MIMO channel estimation
Additional frequency or time alignment
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

23. Summary of HT-LTF Robust design Per spatial stream training
Month 2002
doc.: IEEE /888r1
September 2004
Summary of HT-LTF
Robust design
Tone interleaving reduces power fluctuation
2 symbols per field
3dB of channel estimation gain with baseline per-tone estimation
Enables additional frequency offset estimation
Per spatial stream training
HT-LTF and HT-Data under go same spatial transformation
Number of HT-LTFs = Number of spatial streams
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

24. 20/40 MHz BSS Operation A 20/40 MHz BSS supports interoperability of:
Month 2002
doc.: IEEE /888r1
September 2004
20/40 MHz BSS Operation
A 20/40 MHz BSS supports interoperability of:
20/40 MHz HT clients
20 MHz HT client
20 MHz legacy client
Not required in regulatory domains where prohibited
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

25. 20/40 MHz Interoperability
Month 2002
doc.: IEEE /888r1
September 2004
20/40 MHz Interoperability
40 MHz PPDU into a 40 MHz receiver
Get 3dB processing gain – duplicate format allows combining the legacy compatible preamble and the HT-SIG in an MRC fashion
20 MHz PPDU into a 40 MHz receiver
The active 20 MHz sub-channel is detected using energy measurement on the two sub-channels
Inactive tones at the FFT ouput (i.e. 64 out of 128) are dropped
40 MHz PPDU into a 20 MHz receiver
One 20 MHz sub-channel is sufficient to decode the L-SIG and the HT-SIG
See MAC slides for additional information on 20/40 inter-op
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

26. Month 2002
doc.: IEEE /888r1
September 2004
TX Arch: Basic TX Beamforming or Spatial Spreading e.g. 2 Spatial Streams with 3 TX Antennas (optional)
Per Spatial Stream Processing:
HT-LTF & HT-Data under go same spatial transformation
HT LTF
iFFT
Mod.
insert GI
window
Pilots
Frequency
Interleaver
Constellation
Mapper
Orthogonal Spatial Spreading with Cyclical Delay
Spatial Steering (TX Beamforming), or
iFFT
Mod.
insert GI
window
Scrambled
MPDU
HT LTF
Channel Encoder
Puncturer
Spatial Parser
Pilots
Frequency
Interleaver
Constellation
Mapper
iFFT
Mod.
insert GI
window
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

27. SNR Gain with TX Beamforming
September 2004
SNR Gain with TX Beamforming
1000 byte packets
No impairment
20MHz, channel D
4 TX-antenna AP  2 RX-antenna client
~10 dB gain of 4x2-ABF over 2x2-SDM
=> cost effective client
Syed Aon Mujtaba, Agere Systems, et. al.

28. Optional Advanced Coding Modes
Month 2002
doc.: IEEE /888r1
September 2004
Optional Advanced Coding Modes
Low Density Parity Check (LDPC)
Superior performance, especially at high code rates (7/8)
Reed-Solomon (RS)
Outer code concatenated with inner convolutional code
Very low cost, mature technology
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

29. MAC Month 2002 doc.: IEEE 802.11-04/888r1 September 2004
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

30. MAC Challenges in HT Environment
Month 2002
doc.: IEEE /888r1
September 2004
MAC Challenges in HT Environment
HT requires an improvement in MAC Efficiency
HT requires effective Rate Adaptation
HT requires Legacy Protection
PHY Rate 243 Mbps
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

31. New MAC Features Aggregation Structure Aggregation Exchanges
Month 2002
doc.: IEEE /888r1
September 2004
New MAC Features
Aggregation Structure
Aggregation Exchanges
Protocol for link adaptation
Protocol for reverse direction data
Single and multiple responder
Protection Mechanisms
Coexistence & Channel Management
Header Compression
MIMO Power Management
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

32. Aggregation Structure
Month 2002
doc.: IEEE /888r1
September 2004
Aggregation Structure
Robust Structure
Aggregation is a purely-MAC function
PHY has no knowledge of MPDU boundaries
Simplest MAC-PHY interface
Control and data MPDUs can be aggregated
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

33. Aggregate Exchange Sequences
Month 2002
doc.: IEEE /888r1
September 2004
Aggregate Exchange Sequences
Aggregate exchange sequences include single frames or groups of frames that are exchanged “at the same time”
Allows effective use of Aggregate Feature
Allows control and data to be sent in the same PPDU
An initiator sends a PPDU and a responder may transmit a response PPDU
Either PPDU can be an aggregate
(“Initiator” / “responder” are new terms relating to roles in aggregate exchange protocol)
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

34. Basic Aggregate Exchange
Month 2002
doc.: IEEE /888r1
September 2004
Basic Aggregate Exchange
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

35. Reverse Direction Protocol
Month 2002
doc.: IEEE /888r1
September 2004
Reverse Direction Protocol
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

36. Link Adaptation Protocol
Month 2002
doc.: IEEE /888r1
September 2004
Link Adaptation Protocol
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

37. Periodic Multi-Receiver Aggregation
Month 2002
doc.: IEEE /888r1
September 2004
Periodic Multi-Receiver Aggregation
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

38. LongNAV Protection Provides protection of a sequence of multiple PPDUs
Month 2002
doc.: IEEE /888r1
September 2004
LongNAV Protection
Provides protection of a sequence of multiple PPDUs
Provides a solution for .11b
Comes “for free” with polled TXOP
Gives maximum freedom in use of TXOP by initiator
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

39. Pairwise Spoofing Protection
Month 2002
doc.: IEEE /888r1
September 2004
Pairwise Spoofing Protection
Protects pairs of PPDUs (current and following)
Very low overhead, suitable for short exchanges, relies on robust PHY signaling
Places Legacy devices into receiving mode for spoofed duration
Spoofing is interpreted by HT devices as a NAV setting
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

40. Operating Mode Selection
Month 2002
doc.: IEEE /888r1
September 2004
Operating Mode Selection
BSS operating mode controls the use of protection mechanisms and 20/40 MHz width switching by HT STA
Supports mixed BSS of legacy + HT devices
HT AP-managed modes
If only the control channel is overlapped, managed mixed mode provides a low overhead alternative to mixed mode
If both channels are overlapped, 20 MHz base mode allows an HT AP to dynamically switch channel width for 40 MHz-capable HT STA
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

41. CC 27/28 Performance September 2004
Syed Aon Mujtaba, Agere Systems, et. al.

42. Selected MAC CC Performance
Month 2002
doc.: IEEE /888r1
Selected MAC CC Performance
September 2004
CC#
Name
Result
HCCA
2x2x20
2x2x40
CC3
List of goodput results for usage models 1, 4 and 6.
SS1 (Mbps)
54.9
81.3
SS4
48.8
97.3
SS6
45.2
63.1
CC18
HT Usage Models Supported
Non-QoS
(Measured aggregate throughput / offered aggregate throughput)
SS1
(Mbps/ratio)
2.4 / 0.08
28.8 / 0.9
39.6 / 0.09
88.2 / 0.2
0.35 / 0.02
18.3 / 0.9
CC19
HT Usage Models Supported (number of QoS flows that meet their QoS requirements)
17 of 17
18 of 18
39 of 39
CC58
HT Spectral Efficiency
bps/Hz
5.4
6.075
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

43. MAC Architecture Month 2002 doc.: IEEE 802.11-04/888r1 September 2004
summary deck
Syed Aon Mujtaba, Agere Systems, et. al.
Syed Aon Mujtaba, Agere Systems, et. al.

44. September 2004
List of References
IEEE /887, "TGnSync Proposal Summary" (this document)
IEEE /888, "TGnSync Proposal"
IEEE /889, "TGnSync Proposal Technical Specification"
IEEE /890, "TGnSync Proposal FRCC Compliance"
IEEE /891, "TGnSync Proposal PHY Results"
IEEE /892, "TGnSync Proposal MAC Results"
IEEE /893, "TGnSync Proposal MAC1 Simulation Results"
IEEE /894, "TGnSync Proposal MAC2 Simulation Results"
IEEE /895, "TGnSync Proposal MAC Simulation Methodology"
You may also direct questions to
For additional details, refer to
Syed Aon Mujtaba, Agere Systems, et. al.

45. Key Features 20 and 40 MHz channels – fully interoperable
September 2004
Key Features
20 and 40 MHz channels – fully interoperable
Scalable to 630 Mbps
Legacy interoperability – all modes
Robust preamble
Transmit beamforming
Robust frame aggregation
Bi-directional data flow
Fast link adaptation
Syed Aon Mujtaba, Agere Systems, et. al.

46. September 2004
Glossary
Syed Aon Mujtaba, Agere Systems, et. al.