Self-organizing and Auto-configuring Mesh Networks June 2005 doc.: IEEE 802.11-05/0611r2 July 2005 Self-organizing and Auto-configuring Mesh Networks Date: 2005-07-19 Authors: Notice: This document has been prepared to assist IEEE 802.11. 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 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// 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 <stuart.kerry@philips.com> 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 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Alexander Cheng, C-cation, Inc. Alexander Cheng, C-cation, Inc.
June 2005 doc.: IEEE 802.11-05/0611r2 July 2005 Abstract This document describes C-cation’s proposal to TGs, called Self-organizing and Auto-configuring Mesh Networks. This method of self-organization and auto-configuration is suitable for a wide range of deployment scenarios and applicable for various configurations required of WLAN mesh networks. The proposed system operates in two phases. In self-organization phase, a mesh network is established by organizing a collection of nodes in clusters. Then the auto-configuring process establishes intra- and inter-cluster links to meet traffic requirements. System bandwidth is increased by utilizing multiple channels concurrently. This proposal offers improved QoS support by increased bandwidth, topological arrangement, and knowledge-based channel scheduling. Alexander Cheng, C-cation, Inc. Alexander Cheng, C-cation, Inc.
Motivations Spectrum reuse QoS Automatic process July 2005 Motivations Spectrum reuse Taking advantage of multiple channels available Considering nodes’ capabilities QoS Nodes’ configurations Cluster grouping Increased bandwidth Channel access scheduling, efficiency (e.g., contention avoidance) Automatic process Grouping of nodes into clusters Channels scheduling according to individual node’s configurations Alexander Cheng, C-cation, Inc.
Processes Two Phases Self-organization phase Auto-configuring process July 2005 Processes Two Phases Self-organization phase Special nodes Clusters Auto-configuring process Intra-cluster links Inter-cluster links Alexander Cheng, C-cation, Inc.
Self-organization Individual node configuration July 2005 Self-organization Individual node configuration Portal Data source Data sink Edge node Maximal cluster coverage Edge node selection Propogation Alexander Cheng, C-cation, Inc.
Intra-cluster links Scheme Traffic pattern matching July 2005 Intra-cluster links Scheme Pair-wise direct connect Parallel channels Re-enforced links Directional antenna, and Hybrid Traffic pattern matching Inter-cluster coordination Substitution Common channel Fill-in Alexander Cheng, C-cation, Inc.
Pair-wise direct connect June 2005 doc.: IEEE 802.11-05/0611r2 July 2005 Pair-wise direct connect Cluster possible schedule sequence A B C AB,AC,BC, ... AB/CD,AC/BD,AD/BC, … AB/CD,AC/BD,AD/BC,AE/BC, … AB/CE,AC/BE,AD/BE,AE/BD, … AB/DE,AC/DE,AD/CE,AE/CD, … A B C D A B C D E Uniform radio configuration for all nodes, 1 to N-1 Concurrent links contribute to increase of system bandwidth Alexander Cheng, C-cation, Inc. Alexander Cheng, C-cation, Inc.
Combinations for 4-node cluster July 2005 Combinations for 4-node cluster Up to 3 radios/node, showing parts of all combinations Alexander Cheng, C-cation, Inc.
Example (topology) A collection of nodes 4 clusters July 2005 A B D Alexander Cheng, C-cation, Inc.
Example (channel scheduling) July 2005 Example (channel scheduling) Configtrafficcoordsubstcommonfill-in com L12 L14 3 3 3 BC AB AC BC Cluster 2 com L12 3 2 5 L23 AB CD AC BD AD BC Cluster 3 com 3 5 L23 AB Cluster 4 com L14 2 5 Alexander Cheng, C-cation, Inc.
Resulting Topologies & Configurations July 2005 Resulting Topologies & Configurations String of nodes Grid of nodes Others Alexander Cheng, C-cation, Inc.
Next Steps Next steps Comments/Q&A Framework Other functionalities July 2005 Next Steps Next steps Framework Completion Protocol Simulation/analysis Other functionalities Security Measurement Interworking Comments/Q&A Alexander Cheng, C-cation, Inc.
References IEEE 802 11-04/54r2, PAR for IEEE 802.11s ESS Mesh July 2005 References IEEE 802 11-04/54r2, PAR for IEEE 802.11s ESS Mesh IEEE 802 11-04/56r1, Five Criteria for IEEE 802.11s ESS Mesh IEEE 802 11-04/662r16, TGs Usage Models IEEE 802.11-04/1477r4, Terms and Definitions for 802.11s IEEE 802.11-04/1174r13, 802.11 TGs Functional Requirements and Scope Alexander Cheng, C-cation, Inc.
Summary Systematic approach Automatic process July 2005 Summary Systematic approach Automatic process Bandwidth increase thru channel reuse QoS Framework Open high level support Alexander Cheng, C-cation, Inc.
SO Mesh! Oh So Mesh!!! Moniker & motto July 2005 Alexander Cheng, C-cation, Inc.