1. November 2005
doc.: IEEE
November 2005
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Mesh PAN Alliance (MPA) and integration]
Date Submitted: [ ]
Source: [Guido R. Hiertz, Yunpeng Zang, Sebastian Max, Hans-Jürgen Reumerman] Company [Philips Research Laboratories Aachen & ComNets, RWTH Aachen University]
Address [Kopernikusstr. 16, Aachen, Federal Republic of Germany]
Voice: [ ], FAX: [ ],
Re: [IEEE P WPAN MESH Networking Call For Proposals IEEE /0071, January 2005]
Abstract: [The document describes enhancements to our proposal to seamlessly integrate legacy devices into our distributed, decentralized Mesh WPAN MAC proposal.]
Purpose: [We have identified means to set-up a decentralized Mesh among devices that can work as PNC for non-Mesh aware legacy devices. Our approach foresees seamless integration of to provide them service via the Mesh WPAN backbone.]
Notice: This document has been prepared to assist the IEEE P 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 acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

2. Mesh PAN Alliance (MPA)
November 2005
doc.: IEEE
November 2005
Mesh PAN Alliance (MPA)
Guido R. Hiertz
Sebastian Max
Yunpeng Zang
Hans-Jürgen Reumerman
Philips Research Laboratories Aachen
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

3. Overview Mesh PAN Alliance Integration with .15.3 Superframe structure
November 2005
doc.: IEEE
November 2005
Overview
Mesh PAN Alliance
Superframe structure
Beacon Period
Data Transmission Period
Frame Aggregation
Multi-Channel extension
Integration with .15.3
Local Beacon
Local CTA
Mesh integration
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

4. Philips Research Laboratories ComNets, RWTH Aachen University
November 2005
Mesh PAN Alliance
Philips Research Laboratories
ComNets, RWTH Aachen University
MAC design
Guido R. Hiertz, Sebastian Max et al., Philips

5. Mesh WPAN design criteria
November 2005
doc.: IEEE
November 2005
Mesh WPAN design criteria
High speed WPAN
High throughput
Low latency
Easy set-up
Cheap devices
Single transceiver/radio solution
Decentralized
Data services
Isochronous
Asynchronous
High spatial frequency reuse
Support for single/multiple frequency
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

6. Mesh WPAN Timing structure
November 2005
doc.: IEEE
November 2005
Mesh WPAN Timing structure
Superframe
Slotted structure
Medium Access Slots (MAS)
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

7. Mesh WPAN Superframe structure
November 2005
doc.: IEEE
November 2005
Mesh WPAN Superframe structure
Mesh Beacon Period (MBP)
Network and topology management
Mesh Traffic Period (MTP)
Data exchange
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

8. Mesh & legacy .15.3 integration
November 2005
Mesh & legacy integration
Hierarchical approach for legacy device integration
High level superframe
Mesh Beacon Period, Mesh Traffic Period
Local level superframe
.15.3 Superframe integrated into Mesh superframe
Local beacon etc.
Guido R. Hiertz, Sebastian Max et al., Philips

9. Hierarchical approach – Local level
November 2005
doc.: IEEE
November 2005
Hierarchical approach – Local level
Superframe equally slotted
Medium Access Slots (MAS)
Mesh WPAN devices serve devices as PNC
Reserved MAS for piconet traffic
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

10. Local level Superframe structure
November 2005
doc.: IEEE
November 2005
Local level Superframe structure
Mesh and local superframe offset
Each PNi shifted by i to Mesh superframe t
Local i
Local Beacon #m
CTA 2 (private)
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

11. Example: Integration of 802.15.3 devices
November 2005
Example: Integration of devices
Mesh Link
Obstacle
Guido R. Hiertz, Sebastian Max et al., Philips

12. Mesh Beacon Period Used for coordination Every device transmits beacon
November 2005
doc.: IEEE
November 2005
Mesh Beacon Period
Used for coordination
Every device transmits beacon
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

13. Mesh Beacon Period (MBP)
November 2005
doc.: IEEE
November 2005
Mesh Beacon Period (MBP)
Three Mesh Beacon slots per Medium Access Slot (MAS)
Mesh Beacon size may vary
Adaptive Mesh Beacon protocol allows flexible number of Mesh Beacons per MAS
Mesh Beacon carry
Device ID
Synchronization information
Neighborhood information
Neighbor‘s neighbors
Medium Access Information
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

14. Neighborhood information map
November 2005
Neighborhood information map
Mesh Beacons send at most robust PHY mode
Reception close to interference range
Devices store neighborhood information
 Neighborhood table
Guido R. Hiertz, Sebastian Max et al., Philips

15. Mesh Beacon Period (MBP) measurements
November 2005
Mesh Beacon Period (MBP) measurements
Neighborhood table informs about used Mesh Beacon slots
Mesh Devices continuously listen during MBP
Store received power indication for each Mesh Beacon
Combine power and Mesh Beacon device ID
 Neighborhood and interference graph
Guido R. Hiertz, Sebastian Max et al., Philips

16. Data Transmission Period
November 2005
Data Transmission Period
Guido R. Hiertz, Sebastian Max et al., Philips

17. Data Transmission Period
November 2005
Data Transmission Period
Scheduled transmissions
Contention avoidance
Collision avoidance
Distributed
Mutual interference awareness
Efficient spatial frequency reuse
Support for
Distributed Quality of Service
A-/synchronous data
Wireless USB
VoIP
Multimedia (Video, Audio) streaming
 Distributed Reservation Protocol (DRP)
Guido R. Hiertz, Sebastian Max et al., Philips

18. Distributed Reservation Protocol (DRP)
November 2005
doc.: IEEE
November 2005
Distributed Reservation Protocol (DRP)
Devices announce desired transmissions
Receiver & transmitter negotiate via beacon
Beacons carry information on other reservations
Interference awareness allows parallel transmissions
Guido R. Hiertz, Sebastian Max et al., Philips
Guido R. Hiertz, Sebastian Max et al., Philips

19. Data transmission rules
November 2005
Data transmission rules
Reservations must be accepted by receiver
Transmitter announces wish in beacon
Receiver accepts or declines wish in its beacon
Priority support
High priority reservations may replace low priority
All data transmission are unidirectional
No immediate ACK
DATA and ACK separate
Slots assigned to transmitter only
Predictable interference
Delayed ACK
Piggyback with DATA
Explicit as Block ACK
Guido R. Hiertz, Sebastian Max et al., Philips

20. Frame Aggregation Aggregate small frames into larger PDU
November 2005
Frame Aggregation
Aggregate small frames into larger PDU
Separate Frame Check Sequence
Multiple receivers possible
Guido R. Hiertz, Sebastian Max et al., Philips

21. Multiband PHY – MAC enhancements
November 2005
Multiband PHY – MAC enhancements
Guido R. Hiertz, Sebastian Max et al., Philips

22. Conclusion Ready for the next decade of wireless freedom
November 2005
Conclusion
Mesh PAN Alliance (MPA) proposal
Distributed & decentralized
Quality of Service support
Hidden/Exposed node problem solved
High spatial frequency reuse
Robust & reliable
Legacy seamlessly integrated
Outlook
Simulation results
Further details on beaconing
World model example
Routing procedures
Ready for the next decade of wireless freedom
Guido R. Hiertz, Sebastian Max et al., Philips

23. Thank you for your attention!
November 2005
Thank you for your attention!
The Mesh PAN Alliance
Get meshed, get freedom for your Wireless Personal Area Networks
Guido R. Hiertz, Sebastian Max et al., Philips