1. TGn Overview Portland, Oregon, US July 2004
doc.: IEEE /0658r0
July 2004
TGn Overview Portland, Oregon, US July 2004
Bruce Kraemer, Chair
July 15, 2004
Kraemer, Conexant; Hillman, AMD
Bruce Kraemer, Conexant

2. July 2004
TGn Motivation
Demand for WLANs is expected to grow at a 50% Compounded Annual Growth Rate (CAGR) over the next five years. Over 50% of all home-networking connections and over 40% of all mobile PC network connections will be over WLAN by 2005.
New usages such as simultaneous transmission of multiple HDTV signals, audio, and on-line gaming, will drive the need for higher throughput in the home.
As usage increases in the corporate and other high-density environments, bandwidth restrictions of a shared media will begin to be realized. This is very similar to what happened in the wired Ethernet market where the need for higher throughput drove the development and adoption of Fast Ethernet.
The need for higher throughput drove switching and 100Base-TX adoption. While a switching technology would ultimately be desired for WLAN, this is not technically feasible. The next logical step in wireless LAN technology is to increase the data throughput of each WLAN Connection.
Kraemer, Conexant; Hillman, AMD

3. IEEE P802.11 - TGn Backgrounder
July 2004
IEEE P TGn Backgrounder
TGn will define the next generation standard for high speed wireless LANs.
The group's basic goal is to develop a standard capable of providing at least 100Mbps throughput at the MAC service access point.
Existing standards are typically designated by their peak physical data rates. For example, a has a peak data rate of 54Mbps. This amendment has chosen to use a performance metric of throughput measured at the MAC data SAP. This amendment seeks to improve the peak throughput to at least 100Mbps, measured at the MAC data SAP. Depending on the scenario, this represents an improvement of at least 4 times the throughput obtainable using existing systems.
Technical mechanisms for accomplishing this have not yet been determined by the task group but may include techniques such as spatial multiplexing, channel expansion, low density coding and a variety of other MAC efficiency improvement techniques
TGn has defined comprehensive Functional Requirements, Comparison Criteria, Usage Scenarios, and Simulation Environments which must be addressed by the proposals in order to be considered for the final standard.
Kraemer, Conexant; Hillman, AMD

4. Additional Project Goals
July 2004
Additional Project Goals
The MAC SAP interface will remain the same as for the existing standard.
The MAC SAP definition shall not be altered ensuring that all LLC and MAC interfaces are compatible to and in conformance with the IEEE Architecture, Management and Internetworking standards.
The proposed amendment shall introduce no architectural changes.
The scope of the MAC and PHY enhancements assume a baseline specification defined by and its amendments and anticipated amendments a, b, d, e, g, h, i and j. The enhancements shall be to support higher throughput. The amendment shall not redefine mechanisms in the baseline that do not pertain to higher throughput.
Some of the modes of operation defined in the HT amendment shall be backwards compatible and interoperable with a and/or g.
Kraemer, Conexant; Hillman, AMD

5. No later than midnight GMT -5 No later than midnight GMT -5
July 2004
Time line
You are here
Monday
May 17, 2004
IEEE 802
Sessions Open
Monday
Sep 13
No later than midnight GMT -5
Friday June 18
No later than midnight GMT -5
Friday Aug 13
80 days
30 days
50 days
30 days
Event #3
Documents posted on IEEE server
Technical Proposal
CC Compliance Report
FR Compliance Report
Event #1
Issue call for proposals
Event #2
Intent to present
Full or
Partial proposal
notification submitted
Event #4
All Proposals
Presented in TGn Session
Kraemer, Conexant; Hillman, AMD

6. Overall timeline July 2004 2003 2004 2005 2006 2007 HT SG Formed
Publication
PAR
Approved
TGn
Formed
ExCom
NESCOM
Approval
First
Sponsor
Letter
Ballot
Selection
Process &
Criteria
Call for
Proposals
First WG
Letter
Ballot
First Proposal
Presentations
Down
Select
Kraemer, Conexant; Hillman, AMD

7. Time line - Proposed Schedule Highlights
July 2004
doc.: IEEE /0658r0
July 2004 4.
Time line - Proposed
Schedule Highlights
Issue First Letter Ballot on Draft July 2005
3 sessions to review edit (Sep, Nov, Jan, Mar)
Issue First Sponsor Ballot Mar 2006
3 sessions to review & edit ( May, July, Sept)
Complete Sponsor ballot – accepted by ExCom Nov 2006
Publish Mar 2007
Kraemer, Conexant; Hillman, AMD
Bruce Kraemer, Conexant