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Localisation architecture review and proposal for TG12 ULI

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Submission Title:[In-band signaling for802.15.4zUWB MAC]Date Submitted: [July 2019]Source:[Aditya V. Padaki (Samsung),SeongahJeong(Samsung), Zheda Li (Samsung),MingyuLee (Samsung), Jack Lee (Samsung),AymanNaguib(Apple),Frank Leong (NXP), Brima Ibrahim (NXP)]Address:[]E-Mail:[(a.padaki,sa.jeong,, mg0218.lee,jonghyo.lee);; (frank.leong,brima.ibrahim)]Re:[Input to the task group]Abstract:[Presentation,possible inclusion in IEEE 802.15.4z MAC]Purpose:[Presentation,possible inclusion in IEEE 802.15.4z MAC]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.
Present development on 4z MAC assumes out-of-band (OOB) interaction for a lot of aspects including but not limited toDiscoverySTS seed/indexexchange (using the RSKI IE)Network Association/Management, etc.Ability to realize aMAC signaling withoutOOB signaling is very useful from an prognostic perspective of UWB ecosystem, enabling many standalone UWB radio use cases.The parent 15.4 standard has enough hooks and monumental precedence on examples for realizing in-band signalingSimplemodifications extend the scope of 15.4 in-band management to include 15.4zranging are proposed
Ranging Time Structure
The ranging time structure is bounded by beacon signals – EnhancedBeaconFrames (EBF) shall be usedThe duration between two consecutive beacons is termed as theBeaconInterval.TheBeaconIntervalis made up of ranging slots – ranging slot duration is a multiple of the ranging scheduling time unit (RSTU) – this is the same slot as defined in the current15.4z draft.The ranging time structure is divided into three parts: A Beacon, the Ranging Management Period, and the Ranging Period. Each period consists of one or morerangingslots.Beacon uses the 802.15.4 Enhanced Beacon frame formatThe beacon conveysinformation regarding the usage ofRanging ManagementPeriodBeacon Intervalthe beginning of theRangingPeriod, slot of the ranging control message.The RangingManagementPeriodmay have one or more contention access periods (CAP), one or more contention free periods (CFP). Each CFP and CAP comprisesoneor more ranging slots. The CAP and CFP may be interleaved with each other. TheRanging ManagementPeriodmay or may not be present in a given beacon interval.TheRangingPeriodmay contain ranging blocks, ranging rounds, ranging slots, etc. as defined in 802.15.4z. TheRangingPeriodmay have more than one RCM. TheRangingPeriodmay or may not be present in a givenBeaconInterval. RangingPeriodmay last until the next beacon or could end before the next beacon
Ranging Descriptor IE (RD IE)
Each row of the RM Table
IE content field format
RD IE fields
TheVersionfield indicates the version of the standard – set to 0001 for this standardSlot Size Multiplierconveys the ranging slot duration as a multiple of the Ranging Scheduling Time Unit (RSTU).Beacon Intervalconveys the time duration or the time interval to the next beacon in units of ranging slotsFirst RCM Slotfield conveys the ranging slot number of the first RCM in the beacon interval of the ranging time structure.Ranging Management (RM) Table Lengthspecifies the length of the Ranging Management tableEach row of theRM Tablesequentially indicates the starting and ending slot numbers of CAP and/or CFP periods that are present in the Ranging Management Period. The CAP/CFP indicator in each row indicates whether the set of slots specified in the row use CAP (=0) or CFP (=1)
Each row of RM Table
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Localisation architecture review and proposal for TG12 ULI