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Enhancements in Mesh Discovery Protocol for Wireless Networks

This document suggests resolutions to improve Mesh Discovery in wireless networks by amending BSS and Mesh Profile definitions, implementing START primitive for mesh BSS membership, and adding missing MIB variables and PICS table entries.

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Enhancements in Mesh Discovery Protocol for Wireless Networks

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  1. General discovery comment resolution overview Authors: Date: 2010-03-02 Kazuyuki Sakoda, Sony Corporation

  2. Abstract • Summary of the suggested resolution text (11-10/236r0) • Clean up the clause 11C.1 Mesh discovery. • Amend the definition of BSS. • Clarify what is Mesh Profile. • Use START primitive to become a member of a mesh BSS. • Use “become a member of a mesh BSS” consistently, instead of “join a mesh BSS”. • Add the missing MIB variables. • Add the missing PICS table entries. Kazuyuki Sakoda, Sony Corporation

  3. Clean up the clause 11C.1 Mesh discovery • Clause 11C.1 has been modified significantly • Original 11C.1 does not provide appropriate procedures for discovery. • The new subclause structure is as follows: • 11C.1 Mesh discovery • 11C.1.1 General • 11C.1.2 Mesh identifier • 11C.1.3 Mesh profile • 11C.1.4 Supplemental information for mesh discovery • 11C.1.5 Scanning mesh BSS • 11C.1.6 Determination of the candidate peer mesh STA • 11C.1.7 Establishing or becoming a member of a mesh BSS Kazuyuki Sakoda, Sony Corporation

  4. Definition of BSS and mesh profile • Amend the definition of BSS as follows: • 3.25 basic service set (BSS): A set of stations (STAs) that have successfully synchronized using the JOIN service primitives and one STA that has used the START primitive. Alternatively, a set of STAs that have used the START primitive specifying the same mesh profile as neighbor STA or a STA that has used the START primitive without having a neighbor STA that specifies the same mesh profile.Membership in a BSS does not imply that wireless communication with all other members of the BSS is possible. • Add the definition of mesh profile as follows: • 3.s13 mesh profile: A set of parameters that identifies the attribute of the mesh BSS and are commonly used in a single mesh BSS. The mesh profile consists of mesh ID, active path selection protocol, actie path selection metric, congestion control mode, synchronization protocol, and authentication protocol. • Explicitly position “mesh profile” as the MBSS attribute identifiers. Kazuyuki Sakoda, Sony Corporation

  5. Use START primitive • Traditionally, STA uses START primitive to start (establish) a new BSS, and use JOIN primitive to join the existing BSS. • START primitive kicks beaconing. • JOIN primitive kicks sync assuming a single TSF value is shared in a BSS. This is not applicable for mesh STAs. • Mesh STAs use START primitive regardless of the establishment or becoming a member of a BSS. • Aligned with 11-10/135r1 (START primitive proposal) • Use START to establish a mesh BSS (the same procedure as legacy BSS) • Use START to become a member of a mesh BSS (start beaconing) • Use “become a member of a mesh BSS” consistently, instead of “join a mesh BSS”, as join implies starting synchronization. Kazuyuki Sakoda, Sony Corporation

  6. MIB and PICS updates • Many MIB variables are missing to control the discovery related parameters. • dot11MeshNumberOfPeerings • dot11MeshAcceptingAdditionalPeerings • dot11MeshConnectedToPortal • dot11MeshActiveAuthenticationProtocol • dot11MeshActivePathSelectionMetric • dot11MeshActiveCongestionControlMode • dot11MeshActiveSynchronizationProtocol • Further, specify how these MIB variables to be used. • Add the missing PICS table entries regarding: • Discovery related information • Mesh peering management Kazuyuki Sakoda, Sony Corporation

  7. Summary • All G-discovery category comments are examined and resolution text is available to close most of the comments • 11-10/236 provides the resolution text • 11-10/237 provides the resolution notes to each comments • The remaining comment (CID2389) requires discussion with security experts Kazuyuki Sakoda, Sony Corporation

  8. Comments? Questions? Kazuyuki Sakoda, Sony Corporation

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