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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Overview of Draft Standard 802.15.3] Date Submitted: [14 November 2001] Source: [James P. K. Gilb] Company: [Appairent Technologies] - PowerPoint PPT Presentation
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23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Overview of Draft Standard 802.15.3]Date Submitted: [14 November 2001]Source: [James P. K. Gilb] Company: [Appairent Technologies]Address: [9921 Carmel Mountain Rd. #247, San Diego, 92129]Voice:[1-858-538-3903], FAX: [1-858538-3903], E-Mail:[[email protected]]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 P802.15. 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 P802.15.
23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
Interoperability
23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
Coexistence
• Potential for reduced throughput– 802.11 DSSS and 802.11b– 802.11 FHSS– 802.15.1
• No reduction in throughput– 802.11a– 802.11 IR– 802.16 (?)
23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
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.”
23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
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.)
23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
PHY Enhancement 1
• Add to PHY section 11.2.3“A DEV may, in the course of a scan, change to an
802.11b channel for the purpose of detecting the presence of 802.11b networks.”
23 January, 2001
James P. K. Gilb, Appairent Technologies
doc.: IEEE 802.15-02/041r0
Submission
SCAN/START Enhancement, cont. 2
• Add to PHY section 11.2.3“If a DEV is capable of identifying an 802.11b
network and it does identify an 802.11b network while scanning, it should use the 802.11b coexistence channel set. It should also rate the channels where 802.11b networks were identified as the worst channels. If multiple 802.11b networks are detected, the DEV should order them based on an estimate of the amount of traffic and the power level in the channel.”
