Negotiation of Short-Term Operating Parameters in MMS Ranging
This document addresses the protocol for negotiating short-term operating parameters during the MMS ranging phase in IEEE P802.15 working group for wireless personal area networks (WPANs). The purpose is to enable negotiation of these parameters to enhance efficiency and performance. The submission includes proposed solutions, objectives, safeguards, and previous contributions related to MMS ranging. Various aspects such as interference mitigation, coexistence improvement, backward compatibility, and infrastructure synchronization are discussed in detail to support different use cases and improve overall system functionality.
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May 2023 doc.: IEEE 802.15-23-0109-00-04ab Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Negotiation of Short-Term Operating Parameters during the MMS Ranging Phase] Date Submitted: [12 May, 2023] Source: [Lei Huang, Rojan Chitrakar, Kuan Wu, Bin Qian, David Xun Yang] Company [Huawei Technologies] E-Mail:[lei.huang1@huawei.com] Abstract: [The protocol for negotiating short-term operating parameters during the MMS ranging phase is addressed.] Purpose: [To enable negotiation of short-term operating parameters during the MMS ranging phase.] 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 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab PAR Objective Safeguards so that the high throughput data use cases will not cause significant disruption to low duty-cycle ranging use cases Interference mitigation techniques to support higher density and higher traffic use cases Other coexistence improvement Backward compatibility with enhanced ranging capable devices (ERDEVs) Improved link budget and/or reduced air-time Proposed Solution (how addressed) Negotiation of short-term operating parameters during the MMS ranging phase Additional channels and operating frequencies Improvements to accuracy / precision / reliability and interoperability for high-integrity ranging Reduced complexity and power consumption Hybrid operation with narrowband signaling to assist UWB Negotiation of short-term operating parameters during the MMS ranging phase Enhanced native discovery and connection setup mechanisms Sensing capabilities to support presence detection and environment mapping Low-power low-latency streaming Higher data-rate streaming allowing at least 50 Mbit/s of throughput Support for peer-to-peer, peer-to-multi-peer, and station-to- infrastructure protocols Infrastructure synchronization mechanisms Submission Slide 2 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Previous Contributions Related To MMS ranging [1] 15-23-0100-02-04ab-nba-uwb-technical-framework-for-draft0 [2] 15-22-0381-02-04ab-nba-uwb-ranging-text-proposal-for-15-4ab-tfd Submission Slide 3 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Recap: Short-term operating parameters Initialization phase Initialization Channel time offset ADV POLL ADV POLL SOR Initiator Responder SCAN SCAN ADV RESP time Ranging Channel PO LL REP ORT Initiator UWB RANGING Responder RE SP REP ORT MMS Ranging phase During an NBA-MMS-UWB ranging session, an initiator and a responder shall use the parameters which are set or updated by the next higher layers as the long-term operating parameters. An initiator may overwrite the long-term operating parameters of a range-measurement cycle by indicating a new set of short-term parameters during the ranging control phase. The short-term parameters only take effect in the current range-measurement cycle. The long-term operating parameters resume effective in the next range-measurement cycle unless overwritten again during the ranging control phase, of that range-measurement cycle. A responder may request short-term operating parameters for the next range-measurement during the ranging control phase. The initiator may serve the responder s request in the next ranging cycle or ignore the request. Submission Slide 4 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Problem Protocol for negotiating short-term operating parameters during the MMS ranging phase is not clearly defined. Submission Slide 5 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Proposal (1) Initiator may indicate a set of short-term operating parameters in the POLL message, which take effect in the current range-measurement cycle. NB Channel Select NB PHY Configuration NB MAC Configuration (e.g. ranging round duration, ranging block duration) UWB PHY Configuration (MMRS code index, MMRS gap size, RIF fragment length, N_MSR) UWB MAC Configuration (e.g. Number of RSF, Number of RIF) Initiator may also request responder to suggest a set of short-term operating parameters for next range-measurement cycle. NB Channel Select NB PHY Configuration UWB PHY Configuration UWB MAC Configuration Submission Slide 6 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Proposal (2) If a measurement report phase is not present in the current range-measurement cycle or if a measurement report is transmitted by initiator only in the measurement report phase, responder may recommend short-term operating parameters for the next range-measurement cycle in the RESP message. If a measurement report is transmitted by responder in the measurement report phase, responder may suggest short-term operating parameters for the next range-measurement cycle in the REPORT message transmitted by the responder. Note: After the ranging phase in the current range-measurement cycle, the responder may have a better idea on whether or not to suggest short-term operating parameters for the next range-measurement cycle. Ranging round POLL (Request) Initiator REPORT Ranging phase RESP Responder (Suggestion) Ranging round POLL (Request) Initiator Ranging phase REPORT (Suggestion) Responder RESP Submission Slide 7 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Proposal: NB PHY Config for Control & Report Messages (1) If the NB PHY config is indicated in the POLL message, the RESP and REPORT messages are transmitted at the NB PHY config indicated in the POLL message. Otherwise, the RESP and REPORT messages are transmitted at long-term NB PHY config. Ranging round POLL (NB PHY config) Initiator REPORT Ranging phase Responder RESP Long-term NB PHY config Ranging round Initiator REPORT POLL Ranging phase Responder RESP Long-term NB PHY config Long-term NB PHY config Submission Slide 8 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Proposal: NB PHY Config for Control & Report Messages (2) The 1st POLL message is always transmitted at long-term NB PHY config (i.e., default NB PHY config, the NB PHY config negotiated during initiation and setup phase, or the NB PHY config set or updated by the higher layer.) If the initiator transmits the REPORT message which indicates NB PHY config and receives an acknowledgement from the responder, the POLL message in the following ranging round is transmitted at the NB PHY config indicated in the REPORT message. Otherwise, the POLL message in the following ranging round is transmitted at long-term NB PHY config. Submission Slide 9 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Proposal: NB PHY Config for Control & Report Messages (3) 1st Ranging round 2nd Ranging round POLL (NB PHY config) REPORT (NB PHY config) POLL (NB PHY config) Initiator REPORT Ranging phase Ranging phase Responder RESP RESP Long-term NB PHY config 1st Ranging round 2nd Ranging round POLL (NB PHY config) POLL (NB PHY config) Initiator REPORT REPORT Ranging phase Ranging phase Responder RESP RESP Long-term NB PHY config Long-term NB PHY config Submission Slide 10 Lei Huang (Huawei)
May 2023 doc.: IEEE 802.15-23-0109-00-04ab Summary Protocol for negotiating short-term operating parameters during the MMS ranging phase was addressed. Short-term operating parameters which may be indicated by initiator in the POLL message and/or REPORT message Short-term operating parameters which may be suggested by responder in the RESP message and/or REPORT message NB PHY config used to transmit the POLL message NB PHY config used to transmit the RESP and REPORT messages Submission Slide 11 Lei Huang (Huawei)
