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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: [ MAC Enhancements for Ranging ] Date Submitted: [ 19 July 2005 ] Source: [ Zafer Sahinoglu, Mitsubishi Electric] Contact: Zafer Sahinoglu

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [MAC Enhancements for Ranging] Date Submitted: [19 July 2005] Source: [Zafer Sahinoglu, Mitsubishi Electric] Contact:Zafer Sahinoglu Voice:[+1 617 621 7588, E-Mail: zafer@merl.com] Abstract: [This document provides recommendations for enhancements to existing IEEE 802.15.4 MAC to support ranging] Purpose: [providing insight into IEEE 802.15.4 MAC enhancements] 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.

  2. Schematic View of the MAC Command Frame

  3. Schematic View of the ACK Frame

  4. Issues • It is not efficient to insert a “long” preamble in every command and ACK packet • Coordinators should have a privilege to discriminate devices based on their types (e.g., coherent etc) and ranging class (e.g., fast, slow) for association • May not desire to receive a long preamble, while many other tasks are waiting inline. • Devices also should be able to know their neighbors’ capabilities coordinator Coherent (short preamble) Not granted Non-coherent (long preamble) Non-coherent

  5. Primitives Accessed Through the MLME-SAP

  6. MLME-Associate.Request Allows a device to request an association with a coordinator. • ( LogicalChannel, CoordPANId, CoordPANId, CoordAddress, CapabilityInformation, SecurityEnable ) • Should include • ranging class (e.g., fast, slow etc) • Ranging type (one way, two-way etc) CapabilityInformation In IEEE 802.15.4

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