Efficient Implementation of DS-TWR with UWB MMS for Wireless Personal Area Networks

Description of DS-TWR in the context of UWB MMS, emphasizing its efficient implementation for Wireless Personal Area Networks. The document presents the necessity of DS-TWR in Mixed MMS for Ranging Integrity and summarizes its application with Mixed MMS in various scenarios involving packet transmissions. Additionally, it highlights the equivalence of Ping-Ping-Pong to Ping-Pong-Ping when dealing with negative numbers in the DS-TWR Recap. Overall, the submission provides insights into the practical implementation and benefits of DS-TWR in the realm of wireless communication technologies.

• Wireless Personal Area Networks
• UWB MMS
• DS-TWR
• Efficient Implementation
• Mixed MMS

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1. July 2024 DOC: 15-24-0413-00-04ab Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: DS-TWR with UWB MMS Packets Date Submitted: July 2024 Source: Xiliang Luo, Vinod Kristem, Moche Cohen (Apple) Address: One Apple Park Way, Cupertino, CA 95104, USA E-Mails: xiliang_luo@apple.com Abstract: Provide a description of DS-TWR in the context of UWB MMS. Purpose: Show that DS-TWR could be implemented efficiently in the context of UWB MMS. 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. Submission Slide 1 X. Luo, et al

2. July 2024 DOC: 15-24-0413-00-04ab HRP-ARDEV 2ms Z=2 (default) Submission Slide 2 X. Luo, et al

3. July 2024 DOC: 15-24-0413-00-04ab Mixed MMS for Ranging Integrity DS-TWR is Necessary Submission Slide 3 X. Luo, et al

4. DOC: 15-24-0413-00-04ab Mixed MMS Submission Slide 4 X. Luo, et al

5. July 2024 DOC: 15-24-0413-00-04ab DS-TWR Recap Submission Slide 5 X. Luo, et al

6. July 2024 DOC: 15-24-0413-00-04ab DS-TWR Recap Ping-Ping-Pong is equivalent to Ping-Pong-Ping when treating Daand Rbas negative numbers! Submission Slide 6 X. Luo, et al

7. July 2024 DOC: 15-24-0413-00-04ab DS-TWR with Mixed MMS: 3 Packets Tx RSFs RIF 1, 2, RSFs RIF 1, 2, Device-A Rx RSFs RIF 1, 2, RIF-RMARKER Pair Ping Pong Ping Tx RSFs RIF 1, 2, Device-B Rx RSFs RSFs RIF 1, 2, RIF 1, 2, Submission Slide 7 X. Luo, et al

8. July 2024 DOC: 15-24-0413-00-04ab DS-TWR with Mixed MMS: 2 Packets Divide RIFs into 2 non-overlapping parts Tx RSFs RIF 1, 2, Device-A Rx RSFs RIF 1, 2, RIF-RMARKER Pair-1 Ping Ping Pong RIF-RMARKER Pair-2 Tx RSFs RIF 1, 2, Device-B Rx RIF 1, 2, RSFs Submission Slide 8 X. Luo, et al

9. July 2024 DOC: 15-24-0413-00-04ab DS-TWR with Mixed MMS: 2 Packets Group RIFs into 2 overlapping parts Tx RSFs RIF 1, 2, Device-A Rx RSFs RIF 1, 2, RIF-RMARKER Pair-1 Ping Ping Pong RIF-RMARKER Pair-2 Tx RSFs RIF 1, 2, Device-B Rx RIF 1, 2, RSFs Submission Slide 9 X. Luo, et al

10. July 2024 DOC: 15-24-0413-00-04ab DS-TWR with Mixed MMS: 2 Packets Group RIFs into 2 overlapping parts Tx RSFs RIF 1, 2, Device-A Rx RSFs RIF 1, 2, RIF-RMARKER Pair-1 Ping Ping Pong RIF-RMARKER Pair-2 Tx RSFs RIF 1, 2, Device-B Rx RIF 1, 2, RSFs Submission Slide 10 X. Luo, et al

11. July 2024 DOC: 15-24-0413-00-04ab DS-TWR with Mixed MMS 3 MMS packets to enable Ping-Pong-Ping between A (initiator) and B (responder) 1 pair of RIF-RMARKERs are defined in each MMS packet 1 RIF-RMARKER from each RMARKER pair is utilized to derive the final secure ToF value 2 MMS packets to enable Ping-Pong-Ping or Ping-Ping-Pong between A (initiator) and B (responder) 2 pairs of RIF-RMARKERs are defined in the MMS packet from A to B The RIFs between each pair of RIF-RMARKERs can overlap 1 pair of RIF-RMARKERs are defined in the MMS packet from B to A 1 RIF-RMARKER from each RMARKER pair is utilized to derive the final secure ToF value Submission Slide 11 X. Luo, et al

12. July 2024 DOC: 15-24-0413-00-04ab RSF-Only MMS for Optimized Link-Budget SS-TWR is Efficient Submission Slide 12 X. Luo, et al

13. July 2024 DOC: 15-24-0413-00-04ab RSF-Only MMS Submission Slide 13 X. Luo, et al

14. July 2024 DOC: 15-24-0413-00-04ab SS-TWR with RSF-Only MMS 1ms RSF-RMARKER Tx Round-trip time RSF 1 RSF 2 Device-A Rx RSF1 Reply time Tx RSF1 RSF2 Device-B Rx RSF1 Submission Slide 14 X. Luo, et al