Project: IEEE P Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [THALES Coms motivation in IEEE a] Date Submitted: [March 2004] Source: [Fabrice Legrand] Company [THALES Coms] Re: [] Abstract: [] Purpose: [IEEE a] 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 or organization. The material in this document is subject to change in form and content after further study. The contributor reserves 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

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 2 THALES Communications motivation in IEEE a Fabrice Legrand THALES Communicationss

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 3 THALES Coms applications Communications & localization in groups of firefighters, soldiers, … Communications between elements of the group in urban areas or obstructed areas Data rate : 100 kb/s Multiple services : voice, data Overall range : 1 km in free space by using multi-hops relaying Relaying at the MAC level (real-time) Sub-groups connectivity management (indoor conditions) Distance measurement between elements of the group (Homing function) 0.1 m accuracy up to 30 m 1 m accuracy up to 1000m Localization of the elements 3D localization based on multiple stations, synchronized or not TOA & AOA measurements

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 4 THALES Coms applications Communications & localization in groups of hikers, … Communications between elements of the group in obstructed areas Moderate voice data rate (64 kb/s) Overall range : 1 km in free space by using multi-hops relaying Relaying at the MAC level (real-time) Sub-groups connectivity management (obstructed outdoor conditions) Distance measurement between elements of the group (Homing function) Moderate range of distance measurement (30m) High accuracy of distance measurement (10 cm) Low cost product (mass market)

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 5 THALES Coms applications Sensors networks Low data rate sensors network Data rate : < 10 kb/s Service : data Range between a sensor and the collecting point : < 1 km Multi-hops relaying Mutual distance measurements

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 6 THALES Coms applications LDRS : Low Data Rate sensor HDRS : High Data Rate sensor HDRS Collecting point & Gateway LDRS Sensors networks Low and High data rate sensors network  Combination of Low Data Rate (LDRS) and High Data Rate Sensors (HDRS) such as day/night camera,...  LDRS always active, HDRS in stand-by mode and activated when activity detected by LDRS close to it

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 7 THALES Coms UWB competencies (1) MAC, relaying & routing procedures  In an ad hoc topology, the access protocol can be :  Fully distributed : no particular node used for synchronization or resource allocation  Pseudo distributed : any node can be used to synchronize the network and allocate resources  Fully distributed MAC protocol (SEBROMA, French RNRT ERABLE program ) :  Use of different THCs, among which 1 for common signaling channel (THsign)  Receiver oriented: potential receivers send RTC messages (Ready To Communicate) on THsign  After reception of a RTC, RTS / CTS packets exchange on a randomly chosen code.  Possibility to differentiate packets priorities (by using sub windows) Fields of the RTC frame (THsign)RTS/CTS exchange RTS contention window Decision period CTS contention window Sub- window 1 Sub- window 2 Sub- window 3 Sub- window 4 Sub- window 1 Sub- window 2 Sub- window 3 Sub- window 4 Synchronization sequence Node ID Information field TH code

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 8 THALES Coms UWB competencies (2) MAC, relaying & routing procedures  Pseudo distributed MAC protocol :  Adaptation of the IEEE standard (IST project U.C.A.N.) to impulse-based UWB  Suppression of the Contention Access Period (because of clear channel assessment problem)  Addition of a relaying possibility at MAC level (intra-piconet)  Special procedures added for distance measurement, information can be used for routing  MAC implementation on a Software/Hardware demonstration platform  Further developments/studies foreseen :  Other fully distributed protocols to comply with SG4a expectations (low complexity, size and power consumption)  Improvements of low-level relaying and routing (delay constraints)

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 9 Conclusion Wide range of needs for location-aware, low data rate and low-power applications (civil and military) Objectives of Thales Coms. – Wireless Activity: –Help and support the standardization for such applications –Bring our experience in UWB (PHY-MAC close interactions) –Promote a solution for efficient networking: low range, potentially large areas  fast relaying and routing high number of devices  fast deployment and reconfigurabilty

doc.: IEEE /119r0 Submission March 2004 Fabrice Legrand, Thales ComsSlide 10 References [1]H. Anouar, Y. Souilmi and C. Bonnet, “Self-Balanced Receiver-Oriented MAC for Ultra- wideband Mobile Ad-Hoc Networks, IWUWBS 2003 Proceedings, June [2]F. Legrand, I. Bucaille and al., “U.C.A.N.’s Ultra Wide Band System: MAC and Routing protocols”, IWUWBS 2003 Proceedings, June 2003.