1. 23 January, 2001
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Overview of Draft Standard ]
Date Submitted: [14 November 2001]
Source: [James P. K. Gilb] Company: [Appairent Technologies]
Address: [9921 Carmel Mountain Rd. #247, San Diego, 92129]
Voice:[ ], FAX: [ ],
Re: []
Abstract: [An overview of the coexistence capabilities of the TG3 draft standard.]
Purpose: [To summarize the coexistence methods in the TG3 draft standard.]
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
James P. K. Gilb, Appairent Technologies

2. Interoperability 23 January, 2001
James P. K. Gilb, Appairent Technologies

3. Coexistence Potential for reduced throughput
23 January, 2001
Coexistence
Potential for reduced throughput
DSSS and b
FHSS
No reduction in throughput
802.11a IR
(?)
James P. K. Gilb, Appairent Technologies

4. SCAN/START Enhancement
23 January, 2001
SCAN/START Enhancement
Add to scan procedure:
“If a DEV is looking to start a new piconet, then it should also look for potential interference in the channels that it scans and rate the channels, from best (lowest interference) to worst (highest interference) and return this information in the MLME-SCAN.confirm command via the ChannelRating. The DEV should choose to start the piconet in the channel with the least amount of interference in the channel.”
James P. K. Gilb, Appairent Technologies

5. SCAN/START Enhancement (cont.)
23 January, 2001
SCAN/START Enhancement (cont.)
Add to MLME-SCAN a parameter, Channel Rating, type integer, valid range 0-255, that rates channels, 1 through N from “best” to “worst”, 1 is the best channel (i.e. least interference) while N is the worst channel, (i.e. the most interference.)
James P. K. Gilb, Appairent Technologies

6. PHY Enhancement 1 Add to PHY section 11.2.3
23 January, 2001
PHY Enhancement 1
Add to PHY section
“A DEV may, in the course of a scan, change to an b channel for the purpose of detecting the presence of b networks.”
James P. K. Gilb, Appairent Technologies

7. SCAN/START Enhancement, cont. 2
23 January, 2001
SCAN/START Enhancement, cont. 2
Add to PHY section
“If a DEV is capable of identifying an b network and it does identify an b network while scanning, it should use the b coexistence channel set. It should also rate the channels where b networks were identified as the worst channels. If multiple b networks are detected, the DEV should order them based on an estimate of the amount of traffic and the power level in the channel.”
James P. K. Gilb, Appairent Technologies