doc.: IEEE 802.11-08/1120r0 Submission September 2008 Guido R. Hiertz et al., P Slide 1 Terminology changes in a nutshell … Date: 2008-09-09 Authors: N am e A ffiliations A ddress Phone em ail Guido R. H iertz Philips Com N ets, Chairof Com m unication N etw orks, Faculty 6, RW TH A achen U niversity, K opernikusstr. 16, 52074 A achen, G erm any +49-241- 802-5829 [email protected]D ee D enteneer Philips Philips, H TC 37 5656 A E Eindhoven, The Netherlands +31-402- 749-743 [email protected]G uenaelStrutt Motorola 1064 G reenw ood Blvd, Lake M ary, FL 32746 +1-407- 562-4050 [email protected]m Y ouko O m ori NEC Corporation 1753 Shim onum abe, N akahara-K u, K aw asaki, K anagaw a, 211-8666, Japan +81-44- 396-2663 [email protected]
Transcript
doc.: IEEE 802.11-08/1120r0
Submission
September 2008
Guido R. Hiertz et al., PhilipsSlide 1
Terminology changes in a nutshell …Date: 2008-09-09
Authors:Name Affiliations Address Phone email Guido R. Hiertz Philips ComNets, Chair of
Here, we document the changes to the terminology of the current 802.11s draft. This document summarizes the changes that have been applied to the “Word-conversion” of the 802.11s draft 2.01. As it contains the full draft, the latter document must not be uploaded to https://mentor.ieee.org/802.11/. Thus, we provide an overview of the changes applied.
doc.: IEEE 802.11-08/1120r0
Submission
General changes (1)
• Change “mesh”, “mesh network” and “WLAN mesh” were meant as “a wireless mesh network based on 802.11” to “Mesh Basic Service Set” or “MBSS”
• Use the term “mesh” as adjective– Rational
• Base standard (& (approved) amendments) has several kind of STAs– HT STA (802.11n)
– QoS STA (802.11-2007)
– Dependent STA (802.11y)
– …
September 2008
Guido R. Hiertz et al., PhilipsSlide 3
doc.: IEEE 802.11-08/1120r0
Submission
General changes (2)
• Replace all occurrences of MP with mesh STA resp. mesh station
• Replace all occurrences of MAP with mesh AP resp. mesh Access Point
• Replace all occurrences of MPP with portal– There is no mesh specific portal
– Portals connect 802.11 and non-802.11 networks• See 802.11-2007
• Update definition section
• Update abbreviation section
September 2008
Guido R. Hiertz et al., PhilipsSlide 4
doc.: IEEE 802.11-08/1120r0
Submission
General changes (3)
• Use MBSS whenever the whole network is meant– Example:
– Form logical groups & give them a name• The MBSS is the set of mesh STAs that cooperate on the formation of
the MBSS
• A mesh STA is a member of exactly one MBSS
September 2008
Guido R. Hiertz et al., PhilipsSlide 5
doc.: IEEE 802.11-08/1120r0
Submission
Changes to 5.2.11
• Renaming– Mesh BSS: The 802.11 Wireless mesh network
• Rational– Two explanatory occurrences of “802.11 Wireless mesh network”
before MBSS is introduced• Used as general description
• Avoids 802.11s specific terminologies before explaining them
– Clause introduces the concept of• Mesh Basic Service Set (MBSS)
– Groups mesh STAs
• Mesh STAs– Are members of an MBSS
September 2008
Guido R. Hiertz et al., PhilipsSlide 6
doc.: IEEE 802.11-08/1120r0
Submission
Further changes to
5.2.11
• New picture– Separate
mesh STA
– AP is an additional STA service
September 2008
Guido R. Hiertz et al., PhilipsSlide 7
Portal 2
Mesh STA 1Portal 4
Mesh STA 7
Mesh STA 9
Mesh STA 3
802.x LAN 802.x LAN
Mesh STA 11
infrastructure BSS
Mesh STA 2
Portal 3
Mesh STA 6
Mesh STA 5
Mesh STA 4
Portal 1
Mesh STA 8
Mesh STA 10
STA 13
STA 14
mesh BSS (MBSS)
APSTA 12
APSTA 15
STA 17
STA 16
infrastructure BSS
STA 19
infrastructure BSS
STA 20
APSTA 18
ESS
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Me
sh A
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doc.: IEEE 802.11-08/1120r0
Submission
WDS term – killed …
• Delete the term “Wireless Distribution System”– Not useful
– Confuses readers
– In conflict with 802.11s
September 2008
Guido R. Hiertz et al., PhilipsSlide 8
doc.: IEEE 802.11-08/1120r0
Submission
Mesh ID
• Replace “Mesh ID” by “Mesh BSSID”– Cohesive with BSSID
– Refer back to base standard
September 2008
Guido R. Hiertz et al., PhilipsSlide 9
doc.: IEEE 802.11-08/1120r0
Submission
Clarify ToDS/FromDS bits
• Clarify usage– “A data frame using the four-address MAC header format. This
standard defines procedures for using this combination of field values for the MBSS only. In an MBSS, this bit combination indicates the presence of the Mesh Control information.”
September 2008
Guido R. Hiertz et al., PhilipsSlide 10
doc.: IEEE 802.11-08/1120r0
Submission
Changes to table 7-8
September 2008
Guido R. Hiertz et al., PhilipsSlide 11
• Add columns that show which IE is used in which Basic Service Set– Independent
(IBSS)
– Infrastructure (beacon sent by AP)
– Mesh (MBSS)
Order Information
Present in beacon frames sent in Notes
IBSS Infra-structure BSS
MBSS
4 Service Set
Identifier (SSID)
X X
25 Mesh ID X The Mesh ID information element may be present within Beacon frames when dot11MeshEnabled is true.
26 Mesh Configuration
X The Mesh Configuration information element may be present within Beacon frames when dot11MeshEnabled is true.
27 Mesh TIM X The Mesh TIM element may be present in Beacon frames generated by the mesh STA when dot11MeshEnabled is true.
28 Awake Window
X The Awake window element may be present only when dot11MeshEnabled is true.
29 Synchronization Protocol
X The Synchronization Protocol information element may be present within Beacon frames when dot11MeshEnabled is true.
30 Beacon Timing
X The Beacon Timing information element may be present within Beacon frames when dot11MeshEnabled is true.
31 MDAOP
Advertisements
X The MDAOP Advertisements information element may be present within Beacon frames when dot11MeshEnabled is true and the mesh STA supports MDA.
32MSCIE
X The MSCIE element may be present when dot11MeshEnabled is true.
doc.: IEEE 802.11-08/1120r0
Submission
Concurrent work – Integration of the resolution of outstanding comments
• Replace all occurrences of MP with mesh STA resp. mesh station
• Replace all occurrences of MAP with mesh AP
• Replace all occurrences of MPP with portal
• Instruct the editor to re-create the table of contents according to the changes applied
September 2008
Guido R. Hiertz et al., PhilipsSlide 12
doc.: IEEE 802.11-08/1120r0
Submission
Outstanding (1)• Some more changes to terms in MIB (Annex D) needed
– Must be changed in remaining document too• Referring sections etc.
• Provide changes to 10.3 MLME SAP interface– Will follow
• Change table 7-58– Add single
column for MBSS
• Has no CFP
• Uses always QoS frames
September 2008
Guido R. Hiertz et al., PhilipsSlide 13
MBSS
CP
Mesh STA
doc.: IEEE 802.11-08/1120r0
Submission
Outstanding (2)
• Further changes to table 7-8 needed– Not finished yet
September 2008
Guido R. Hiertz et al., PhilipsSlide 14
doc.: IEEE 802.11-08/1120r0
Submission
September 2008
Guido R. Hiertz et al., PhilipsSlide 15
References
• Document 11-08-0895-00-000s
• CIDs 340, 816, 867, 872, 964, 990, 1029, 1470, 1780, 1816 and many, many more
