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EP-4481437-B1 - METHOD AND DEVICE FOR RANGING USING UWB COMMUNICATION

EP4481437B1EP 4481437 B1EP4481437 B1EP 4481437B1EP-4481437-B1

Inventors

  • KOO, Jonghoe
  • OH, Hyunseob
  • LEE, MINGYU
  • HA, Taeyoung

Dates

Publication Date
20260506
Application Date
20230316

Claims (15)

  1. An ultra wide band, UWB, device, comprising: a UWB subsystem, UWBS; and a processor connected to the UWBS, wherein the processor is configured to: control to transmit a control message including a first ranging round management list, RRML, parameter corresponding to a first session ID and a second RRML parameter corresponding to a second session ID in a first ranging round in a first ranging block; perform contention-based ranging in a second ranging round mapped to the first session ID in the first ranging block; and transfer data to an external UWB device in a plurality of ranging slots mapped to the second session ID in the first ranging block.
  2. The UWB device of claim 1, wherein the control message is a control message type 3, CM type 3, used in a ranging control phase, RCP, of a hybrid-based mode.
  3. The UWB device of claim 1, wherein the first RRML parameter includes a phase indicator set as a content access period, CAP, a start slot index for the second ranging round, a last slot index for the second ranging round, and the first session ID.
  4. The UWB device of claim 1, wherein the second RRML parameter includes a phase indicator set as a contention free period, CFP, a start slot index for the plurality of ranging slots, a last slot index for the plurality of ranging slots, and the second session ID.
  5. The UWB device of claim 1, wherein the processor is configured to: control to transmit a control message including a third RRML parameter corresponding to a third session ID in a third ranging round in a second ranging block; and transfer data to the external UWB device in a plurality of ranging slots mapped to the third session ID in the second ranging block.
  6. The UWB device of claim 5, wherein the processor is configured to transfer, to the UWBS, a UWB command interface, UCI, command indicating a start of a plurality of phases and a hybrid session.
  7. The UWB device of claim 6, wherein the plurality of phases include a contention-based ranging phase, a static STS-based data transfer phase, and a dynamic STS-based data transfer phase.
  8. The UWB device of claim 7, wherein the contention-based ranging phase corresponds to the first session ID, wherein the static STS-based data transfer phase corresponds to the second session ID, and wherein the dynamic STS-based data transfer phase corresponds to the third session ID.
  9. The UWB device of claim 6, wherein the processor is configured to transfer update information about a phase configuration to the UWBS every ranging block.
  10. The UWB device of claim 1, wherein the control message includes a control field of a payload IE, and wherein the control field of the payload IE includes a parameter indicating a hopping mode and a parameter indicating an RRML size.
  11. A method for operating an ultra wide band, UWB, device, the method comprising: transmitting a control message including a first ranging round management list, RRML, parameter corresponding to a first session ID and a second RRML parameter corresponding to a second session ID in a first ranging round in a first ranging block; performing contention-based ranging in a second ranging round mapped to the first session ID in the first ranging block; and transferring data to an external UWB device in a plurality of ranging slots mapped to the second session ID in the first ranging block.
  12. The method of claim 11, wherein the control message is a control message type 3, CM type 3, used in a ranging control phase, RCP, of a hybrid-based mode.
  13. The method of claim 11, wherein the first RRML parameter includes a phase indicator set as a content access period, CAP, a start slot index for the second ranging round, a last slot index for the second ranging round, and the first session ID.
  14. The method of claim 11, wherein the second RRML parameter includes a phase indicator set as a contention free period, CFP, a start slot index for the plurality of ranging slots, a last slot index for the plurality of ranging slots, and the second session ID.
  15. The method of claim 11, further comprising: transmitting a control message including a third RRML parameter corresponding to a third session ID in a third ranging round in a second ranging block; and transferring data to the external UWB device in a plurality of ranging slots mapped to the third session ID in the second ranging block.

Description

[Technical Field] The disclosure relates to UWB communication and, more specifically, to a hybrid ranging method and device using UWB communication. [Background Art] The Internet is evolving from the human-centered connection network by which humans create and consume information to the Internet of Things (IoT) network by which information is communicated and processed between things or other distributed components. Another arising technology is the Internet of Everything (IoE), which is a combination of the Big data processing technology and the IoT technology through, e.g., a connection with a cloud server. Implementing the IoT requires technical elements, such as sensing technology, a wired/wireless communication and network infrastructure, service interface and security technologies. A recent ongoing research for thing-to-thing connection is on techniques for sensor networking, machine-to-machine (M2M), or machine-type communication (MTC). In the IoT environment may be offered intelligent Internet Technology (IT) services that collect and analyze the data generated by the things connected with one another to create human life a new value. The IoT may have various applications, such as the smart home, smart building, smart city, smart car or connected car, smart grid, health-care, or smart appliance industry, or state-of-art medical services, through conversion or integration of conventional information technology (IT) techniques and various industries. As wireless communication systems evolve to provide various services, a need arises for a method for effectively providing such services. For example, it is possible to use a ranging technique for measuring the distance between electronic devices using ultra wide band (UWB). UWB is a wireless communication technology that uses a very wide frequency band of several GHz or more in a baseband without using a wireless carrier. Document "IEEE Standard for Low-Rate Wireless Networks--Amendment 1: Enhanced Ultra Wideband (UWB) Physical Layers (PHYs) and Associated Ranging Techniques; IEEE Std 802.15.4z-2020 (Amendment to IEEE Std 802.15.4-2020)", 25 August 2020, relates to enhanced UWB physical layers and associated ranging techniques. [Detailed Description of the Invention] [Technical Problem] The disclosure proposes a method for efficiently utilizing a ranging resource by performing hybrid ranging in an ultra wide band (UWB)-based gate system. [Technical Solution] An ultra wide band (UWB) device according to various embodiments of the disclosure comprises, as claimed, a UWB subsystem (UWBS) and a processor connected to the UWBS. The processor controls, as claimed, to transmit a control message including a first ranging round management list (RRML) parameter corresponding to a first session ID and a second RRML parameter corresponding to a second session ID in a first ranging round in a first ranging block, perform contention-based ranging in a second ranging round mapped to the first session ID in the first ranging block, and transfer data to an external UWB device in a plurality of ranging slots mapped to the second session ID in the first ranging block. According to an embodiment, the control message may be control message type 3 (CM type 3) used in the ranging control step (RCP) of the hybrid-based mode. According to an embodiment, the first RRML parameter may include a phase indicator set as a contention access period (CAP), a slot index start for the second ranging round, a last slot index end for the second ranging round, and the first session ID. According to an embodiment, the second RRML parameter may include a phase indicator set as a contention free period (CFP), a start slot index for the plurality of ranging slots, a last slot index for the plurality of ranging slots, and the second session ID. According to an embodiment, the processor may control to transmit a control message including a third RRML parameter corresponding to a third session ID in a third ranging round in a second ranging block, and transfer data to the external UWB device in a plurality of ranging slots mapped to the third session ID in the second ranging block. According to an embodiment, the processor may transfer, to the UWBS, a UWB command interface (UCI) command indicating a start of a plurality of phases and a hybrid session. According to an embodiment, the plurality of phases may include a contention-based ranging phase, a static STS-based data transfer phase (data transfer with static STS phase), and a dynamic STS-based data transfer phase (data transfer with dynamic STS phase). According to an embodiment, the competition-based ranging phase may correspond to the first session ID, the static STS-based data transfer phase may correspond to the second session ID, and the dynamic STS-based data transfer phase may correspond to the third session ID. According to an embodiment, the processor may transfer update information about a phase configuration to the UWBS every ranging