doc.: IEEE 802.15- <doc#> Submiss ion July 2008 Jérôme Rousselot, CSEM Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Networks (WPANs) Submission Title: [WiseMAC – HA : A Flexible, Scalable, Robust and Ultra Low Power MAC Protocol for Medical BANs] Date Submitted: [10 July, 2008] Source: [Jérôme Rousselot] Company [CSEM SA] Address [Jaquet-Droz 1, CH-2002 Neuchatel, Switzerland] Voice:[0041327205829], FAX: [0041327205720], E-Mail: [[email protected]] Re: [If this is a proposed revision, cite the original document.] [If this is a response to a Call for Contributions, cite the name and date of the Call for Contributions to which this document responds, as well as the relevant item number in the Call for Contributions.] [Note: Contributions that are not responsive to this section of the template, and contributions which do not address the topic under which they are submitted, may be refused or consigned to the “General Contributions” area.] Abstract: WiseMAC-HA, a MAC protocol designed specifically for body area networks, is presented and evaluated. Its design guarantees robustness against interferences and node failures, flexibility in network topology, scalability in network size, coexistence with independent networks and an ultra low power consumption. Purpose: [Description of what the author wants P802.15 to do with the information in the document.]
Transcript
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 1
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [WiseMAC – HA : A Flexible, Scalable, Robust and Ultra Low PowerMAC Protocol for Medical BANs]Date Submitted: [10 July, 2008]Source: [Jérôme Rousselot] Company [CSEM SA]Address [Jaquet-Droz 1, CH-2002 Neuchatel, Switzerland]Voice:[0041327205829], FAX: [0041327205720], E-Mail:[[email protected]]
Re: [If this is a proposed revision, cite the original document.]
[If this is a response to a Call for Contributions, cite the name and date of the Call for Contributions to which this document responds, as well as the relevant item number in the Call for Contributions.][Note: Contributions that are not responsive to this section of the template, and contributions which donot address the topic under which they are submitted, may be refused or consigned to the “General Contributions” area.]
Abstract: WiseMAC-HA, a MAC protocol designed specifically for body area networks, is presented and evaluated. Its design guarantees robustness against interferences and node failures, flexibility in network topology, scalability in network size, coexistence with independent networks and an ultra low power consumption.
Purpose: [Description of what the author wants P802.15 to do with the information in the document.]
Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15.
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 2
WiseMAC – HA
A Flexible, Scalable, Robust and Ultra Low Power
MAC Protocol for Medical BANs
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 3
Outline
• Targeted BAN Applications and Requirements
• Ultra Low Power MAC Protocols• The WiseMAC High Availability Protocol• Performance Evaluation• Conclusion
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 4
Targeted ApplicationsMedical Body Area Networks
Continuous measurements
[ESENSE 2006]
Main Requirements
• Low Power
• Scalability
• Robustness
• Coexistence
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 5
Ultra Low Power MAC Design
Radio in Tx Mode
IdleListening
Overhearing
UselessTalking
SignalingOverheadCollisions
Radio in Rx Mode
Types of Energy Waste
MAC Protocol Families
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 6
Ultra Low Power MAC Design
Radio in Tx Mode
IdleListening
Overhearing
UselessTalking
SignalingOverheadCollisions
Radio in Rx Mode
Types of Energy Waste
MAC Protocol Families
No Synchronization
More Scalable
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 7
WiseMAC Ultra Low Power MAC Scheme
• Periodic Sampling
• Link-local Synchronization Only
WiseNET: an ultralow-power wireless sensor network solution, IEEE Computer, Enz et. al., 2004.WiseMAC: An Ultra Low Power MAC Protocol for Multi-hop Wireless Sensor Networks, El-Hoiydi, Decotignie, AlgoSens 2004.
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 8
WiseMAC Ultra Low Power MAC Scheme
WiseMAC Deviations from Ideality
• High Traffic: low costof wake-up preamble
• Low Traffic: only the cost of sampling
N = 10
LMAC
Crankshaft
S-MAC
SCP-MAC
WiseMACIdeal
NodeStore Forward
NodeNode
Low Power Medium Access Control Protocols for Wireless Sensor Networks, Jérôme Rousselot, Amre El-Hoiydi and Jean-Dominique Decotignie, European Wireless Conference 2008 (EW 2008), 22-25 June 2008, Prague, Czech Republic.
(Texas Instruments CC 2420 radio transceiver)
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 9
MultiChannel WiseMAC
Three Channels
doc.: IEEE 802.15-<doc#>
Submission
July 2008
Jérôme Rousselot, CSEMSlide 10
MultiChannel WiseMAC
Advantages
• Ultra Low Power• Robustness to Interference• Scalability with network size• Flexibility (star and mesh
topologies)• Low latency
WiseMAC High Availability
Have some nodes switch to an interoperable modethat does not exhibit limited throughput= CSMA (IEEE 802.15.4 Non Beacon Enabled Mode)
Drawbacks
• Inefficient Broadcasts• Limited Throughput• Sub-optimal for
