1. Kwak, Rudolf, InterDigital
January 2003
IEEE /100r1
BSS Channel Switch
2006-MAY-16
Notice: This document has been prepared to assist IEEE 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE
Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures < ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE Working Group. If you have questions, contact the IEEE Patent Committee Administrator at
Kwak, Rudolf, InterDigital
Submission

2. Kwak, Rudolf, InterDigital
Introduction
BSS Channel Switch proposal: a simple solution addressing TGv objective #2000, Dynamic Channel Selection:
“TGv shall support Dynamic Channel Selection, to allow STAs to avoid interference. Solution shall be able to change the operating channel (and/or band) for the entire BSS during live system operation and be done seamlessly with no intermittent loss of connectivity from the perspective of an associated STA. Solution shall not define algorithm for channel selection.”
Normative Text in v
Kwak, Rudolf, InterDigital
Submission

3. Simple Implementation
Standard Request/Response exchange
Reuses existing Channel Switch Announcement
Unicast/broadcast signaling frames
Randomization to avoid storm of responses after switch
Provides seamless, acknowledged channel switch
Kwak, Rudolf, InterDigital
Submission

4. Normative Text Review: 06/0393
Changes since last rev 06/0388r0 (MAR06):
Deleted Channel Switch Solicitation
Added new triggered diagnostic alert for Link Quality
Simplified Channel Switch Request/Response format & content.
Simplified Procedure text and diagram
Modified Channel Switch Announcement
Walkthrough Normative Text Document:
v-Normative_Text_BSS_Channel_Switch.doc
Kwak, Rudolf, InterDigital
Submission

5. Kwak, Rudolf, InterDigital
Conclusions
Simple implementation
Provides seamless, acknowledged BSS channel switch in both 2.4 GHz and 5GHz bands
Questions & Discussion
Kwak, Rudolf, InterDigital
Submission

6. Vote for Inclusion into TGv Draft
Move to instruct the editor to include normative text for BSS Channel Switch in 06/0387r2 into next version of TGv Draft.
Moved by Joe Kwak
Seconded __________
YES ________
No ________
Abstain ________
Kwak, Rudolf, InterDigital
Submission

7. Kwak, Rudolf, InterDigital
BACKUP SLIDES FOLLOW
These charts are provided for your further information
Kwak, Rudolf, InterDigital
Submission

8. Channel Switch Request
Channel Switch Announcment (optional)
Target Channel
Number
Regulatory
Class
Response Time
Count
Response
Randomization
Interval 1 2 5
Sent by AP to STA(s) to suggest or to command a BSS channel switch
Contains:
Channel spec, same as TGk
Response time counts down to latest time for STA to reply
Randomization to spread replies when broadcast
Optional Channel Switch Announcement to command channel switch 5
Kwak, Rudolf, InterDigital
Submission

9. Channel Switch Response
Sent by STA in response to Channel Switch request
May contain alternate channel suggestion based on STA local conditions.
Contains:
Channel spec, as usual
Response code which is a function of the request type
Kwak, Rudolf, InterDigital
Submission

10. Channel Switch Response Codes
Kwak, Rudolf, InterDigital
Submission