Doc.: IEEE 802.11-04/1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 1 AP Architecture Thoughts Mike Moreton, STMicroelectronics.

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doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 1 AP Architecture Thoughts Mike Moreton, STMicroelectronics

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 2 Introduction defines terms such as “Integration Function”, “Portal”, “DS”, “DSM” etc. Definition is deliberately vague –To allow different implementations Hence different companies have different views of what these terms actually mean –Almost any diagram is likely to be unacceptable to a majority of companies

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide distribution system (DS): A system used to interconnect a set of BSSs and integrated LANs to create an ESS distribution system medium (DSM): The medium or set of media used by a DS for communications between APs and portals of an ESS extended service set (ESS): A set of one or more interconnected BSSs and integrated LANs that appears as a single BSS to the LLC layer at any station associated with one of those BSSs integration: The service that enables delivery of MSDUs between the DS and an existing, non-IEEE LAN (via a portal) portal: The logical point at which MSDUs from a non- IEEE LAN enter the DS of an ESS. Definitions

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 4 Position of Portal

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 5 DS and Integrated LAN (1999) Integrated LAN Portal (Integration Function) MAC (AP STA) DSM DS AP STA BSS Non Endpoint ESS MAC (AP STA)

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 6 Integrated LAN Portal MAC Relay Entity MAC (AP STA) DSM DS MAC (AP STA) DS and Integrated LAN (1999) – missing blocks filled in MAC Relay Entity AP STA BSS Non Endpoint ESS DSM MAC

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide D Architecture

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 8 Integrated LAN Portal MAC Relay Entity MAC (AP STA) DSM DS AP STA BSS Non Endpoint ESS DSM MAC 1999 including LLC LLC Higher Layer Entities MAC Relay Entity LLC Higher Layer Entities MAC (AP STA)

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 9 Virtual Integrated LAN Virtual Portal MAC Relay Entity MAC (AP STA) 802.X LAN DS AP STA BSS 802.X Endpoint ESS 802.X MAC 1999 with 802.X DS LLC Higher Layer Entities MAC Relay Entity LLC Higher Layer Entities MAC (AP STA) Frame Routing

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 10 Integrated LAN (ILAN) Portal MAC Relay Entity MAC (AP STA) DS AP STA BSS Non Endpoint ESS ILAN MAC 1999 – portal in AP LLC Higher Layer Entities MAC Relay Entity LLC Higher Layer Entities MAC (AP STA) Frame Routing Portal ILAN MAC Frame Routing DS Frame Routing

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 11 11i MAC Relay Entity Port for STA 1 Frame Routing Port for STA 2 Frame Routing Port for STA 3 Frame Routing DS

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 12 11i with broadcast MAC Relay Entity Port for STA 1 Frame Routing Port for STA 2 Frame Routing Port for STA 3 Frame Routing DS Broadcast Port Frame Routing

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 13 11i with broadcast, single MAC MAC Relay Entity Port for STA 1 Frame Routing Port for STA 2 Frame Routing Port for STA 3 Frame Routing DS Broadcast Port Frame Routing MAC

doc.: IEEE /1191r4 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 14 11i with broadcast, single MAC, plus WDS MAC Relay Entity Port for STA 1 Frame Routing Port for STA 2 Frame Routing Port for STA 3 Frame Routing DS Broadcast Port Frame Routing MAC WDS Port 1 Frame Routing WDS Port 2 Frame Routing WDS Port 3 Frame Routing