1. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 1 Potential confusion in D3.04 Date: 2009-11-11 Authors:

2. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 2 Abstract Mesh access point and mesh portal definition –What is written in D3.04 –What is the problem –Suggested changes Mesh BSS over multiple channels –What is written in D3.04 –What is the problem –Suggested changes

3. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 3 Mesh access point and mesh portal definition What is written in D3.04: –3.s4 mesh access point: A mesh station (STA) that is collocated with one or more access point(s). –3.s14 mesh portal: A mesh station (STA) that is collocated with one or more portal(s). “mesh access point” and “mesh portal” are “mesh STA”.

4. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 4 Mesh access point and mesh portal definition What is the problem? –Mesh access point sounds like one type of “access point”, rather than mesh STA. –Mesh portal sounds like one type of “portal”, rather than mesh STA. Mesh AP (mesh STA) Access point A wireless LAN device Mesh BSS Infrastructure BSS Let us consider “mesh STA”+”AP” type of WLAN device…

5. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 5 Mesh access point and mesh portal definition What is the problem? (Cont’d) –Mesh access point should be something like “nickname” for the device. (not a formal logical entity for a type of mesh STA) –Define a new nickname for this entity, or state “mesh STA collocated with AP”. Mesh AP (mesh STA) Access point A wireless LAN device Mesh BSS Infrastructure BSS “Mesh access point” should be this guy. We should put other name, or simply state “mesh STA collocated with AP”

6. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 6 Mesh access point and mesh portal definition Suggested changes: –Change the definition of mesh access point to read “A type of device that contains both mesh STA and access point and bridges the traffic between mesh BSS and infrastructure BSS” –Change the references to mesh access point to be “mesh STA collocated with AP” mesh STA collocated with AP Access point Mesh access point Mesh BSS Infrastructure BSS

7. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 7 Mesh access point and mesh portal definition Suggested changes: –Change the definition of mesh portal to read “A type of device that contains both mesh STA and portal” –Change the references to mesh portal to be “mesh STA collocated with portal” mesh STA collocated with portal Portal Mesh BSS non-IEEE-802.11 LAN Mesh portal

8. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 8 Mesh BSS over multiple channels What is written in D3.04: –In D3.0, Annex V.1. (Overview of Unified Channel Graphs) describes how a single mesh BSS can be operated over multiple channels. –In D3.04, previous Annex V.1 is removed, and there is no description regarding the mesh BSS operation over multiple channels at all. What is the problem: –Readers may make misunderstanding that TGs solution does not support operation over multiple channels. –TGs will receive comments on this in the future ballot.

9. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 9 Mesh BSS over multiple channels Suggested changes: –Retrieve the previous Annex V.1. (Overview of Unified Channel Graphs) in D3.0 with refinement. The original text contains some confusing description. –Change the resolutions to some of the comments closed previously relating to Annex V.1. in D3.0.

10. doc.: IEEE 802.11-09/1143r0 Submission November 2009 Kazuyuki Sakoda, Sony CorporationSlide 10 Backup Definitions: –3.110 portal: The logical point at which the integration service is provided. –3.72 integration service: The service that enables delivery of medium access control (MAC) service data units (MSDUs) between the distribution system (DS) and a non-IEEE-802.11 local area network (LAN) (via a portal). –3.40 distribution system (DS): A system used to interconnect a set of basic service sets (BSSs) and integrated local area networks (LANs) to create an extended service set (ESS).