Method and apparatus for ultra wide band (UWB) communication and narrowband (NB) communication

Abstract

A method for managing an ultra wide band (UWB) channel and a narrowband (NB) channel is provided. The method performed by a first UWB device includes receiving an Adv RESP message in response to an Adv POLL message from a second UWB device through an NB channel, transmitting a ranging start (SoR) message corresponding to the Adv RESP message to the second UWB device through the NB channel, performing UWB ranging with the second UWB device based on the SoR message, and transmitting a ranging packet report (RPRT) message to the second UWB device through one of the NB channel and the UWB channel.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to ultra-wideband (UWB) communication. More specifically, the present disclosure relates to a method and apparatus for providing a UWB service through a UWB channel and a narrow band (NB) channel. BACKGROUND

[0002] The Internet, which is a human centered connectivity network where humans generate and consume information, is now evolving to the Internet of things (IoT) where distributed entities, such as things, exchange and process information without human intervention. The Internet of everything (IoE), which is a combination of the IoT technology and big data processing technology through connection with a cloud server, has emerged as a new paradigm for the IoT technology. As technology elements, such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology", and "security technology" are required for IoT implementation, a sensor network, a machine-to-machine (M2M) communication, machine type communication (MTC), and so forth have been researched. In the IoT environment, a physical object is equipped with a unique identifier and is connected to a network, so that it can be managed or controlled through connected information. Also, the IoT can be applied to a wide range of fields including smart home, smart building, smart city, smart car or connected cars, smart grid, health care, smart appliances, and advanced medical services.

[0003] Such an IoT environment can provide intelligent Internet technology (IT) services that create a new value to human life by collecting and analyzing data generated among connected things. The IoT can be applied to a variety of fields including smart home, smart building, smart city, smart car, smart grid, health care, smart appliances, and advanced medical services through convergence and combination between the existing information technology (IT) and various industrial applications.

[0004] As the wireless communication system advances as described above, various services can be provided, and thus a method of efficiently providing the services is required. For example, a ranging technology for measuring a distance between electronic devices by using ultra-wideband can be used.

[0005] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the present disclosure. SUMMARY

[0006] TECHNICAL SOLUTION

[0007] Aspects of the present disclosure are to address at least the above-mentioned problems and / or disadvantages and to provide advantages at least the below-described advantages. Therefore, an aspect of the present disclosure is to provide a method and apparatus for providing an ultra wideband (UWB) service through a UWB channel and a narrowband (NB) channel.

[0008] Additional aspects will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and / or can be learned by practice of the presented embodiments.

[0009] According to an aspect of the present disclosure, a method performed by a first UWB device is provided. The method includes receiving, from a second UWB device, an advertisement response (Adv RESP) message in response to an advertisement poll (Adv POLL) message through a NB channel, transmitting, to the second UWB device, a ranging start (SoR) message corresponding to the Adv RESP through the NB channel, performing UWB ranging with the second UWB device based on the SoR, and transmitting a ranging packet report (RPRT) message to the second UWB device, wherein the RPRT message is transmitted through one of the NB channel and a UWB channel.

[0010] According to another aspect of the present disclosure, a method performed by a second UWB device is provided. The method includes transmitting, to a first UWB device, an Adv RESP message in response to an Adv POLL message through a NB channel, receiving, from the first UWB device, a SoR message corresponding to the Adv RESP message through the NB channel, performing UWB ranging with the first UWB device based on the SoR, and transmitting a RPRT message to the first UWB device, wherein the RPRT message is transmitted through one of the NB channel and a UWB channel.

[0011] According to another aspect of the present disclosure, a first UWB device is provided. The first UWB includes a transceiver, a memory storing one or more computer programs, and at least one processor communicatively coupled to the transceiver and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the at least one processor, cause the first UWB device to receive, from a second UWB device, an Adv RESP message in response to an Adv POLL message through a NB channel, transmit, to the second UWB device, a SoR message corresponding to the Adv RESP message through the NB channel, perform UWB ranging with the second UWB device based on the SoR message, and transmit a RPRT message to the second UWB device, and the RPRT is transmitted through one of the NB channel and a UWB channel.

[0012] According to another aspect of the disclosure, a second UWB is provided. The second UWB includes a transceiver, a memory storing one or more computer programs, and at least one processor communicatively coupled to the transceiver and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the at least one processor, cause the second UWB device to: transmit, to a first UWB device over a NB channel, an Adv RESP message in response to an Adv Poll message, receive, from the first UWB device over the NB channel, a SoR message corresponding to the Adv RESP message, perform UWB ranging with the first UWB device based on the SoR message, and transmit, to the first UWB device, a RPRT message, and the RPRT message is transmitted over one of the NB channel and a UWB channel.

[0013] Another aspect of the disclosure is to provide a method for efficiently performing measurement reporting between electronic devices by managing a UWB channel and a NB channel.

[0014] Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other aspects, features, and advantages of certain embodiments of the disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1a is an illustrative architecture of a UWB device according to embodiments of the disclosure;

[0017] Figure 1b shows a communication system including a UWB device according to embodiments of the disclosure;

[0018] Figure 2 shows a method for performing a NB procedure and a UWB procedure by a UWB device according to embodiments of the disclosure;

[0019] Figure 3 shows an example of a structure of a round and a ranging block for UWB ranging according to embodiments of the disclosure;

[0020] Figure 4 shows a UWB ranging operation according to embodiments of the disclosure;

[0021] Figure 5 shows an operation of a UWB device in a ranging area network according to embodiments of the disclosure;

[0022] Figure 6a shows a multi-millisecond (MMS) UWB ranging operation according to embodiments of the disclosure;

[0023] Figure 6b shows operations for performing communication using NB channel and UWB channel according to embodiments of the disclosure;

[0024] Figure 7a is a view showing MMS UWB ranging operation according to embodiments of the disclosure;

[0025] Figure 7b shows number of UWB packets based on channel state according to embodiments of the disclosure;

[0026] Figure 8a shows frame format of poll, response, report messages according to embodiments of the disclosure;

[0027] Figure 8b is a view showing transmission length of poll, response, and report messages according to embodiments of the disclosure;

[0028] Figure 9a shows example of frame format of response or report messages according to embodiments of the disclosure;

[0029] Figure 9b shows signal ranging distance based on data transmission speed of link budget according to embodiments of the disclosure;

[0030] Figure 10 is a view showing operations in initialization channel and ranging channel according to embodiments of the disclosure;

[0031] Figure 11 shows example of fields included in advertisement response message (or ranging start (SoR) message) according to embodiments of the disclosure;

[0032] Figure 12 shows example of fields included in advertisement response message (or ranging start (SoR) message) according to embodiments of the disclosure;

[0033] Figure 13 shows example of fields included in advertisement response message (or ranging start (SoR) message) according to embodiments of the disclosure;

[0034] Figure 14 is a flowchart showing operations of UWB device according to embodiments of the disclosure;

[0035] Figure 15 is a flowchart showing operations of UWB device according to embodiments of the disclosure; and

[0036] Figure 16 shows UWB device according to embodiments of the disclosure.

[0037] Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures. DETAILED DESCRIPTION

[0038] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions can be omitted for clarity and conciseness.

[0039] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but are merely used to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0040] It should be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0041] In describing embodiments, descriptions related to technical contents well known in the related art and not directly associated with the present disclosure will be omitted. Such omission of unnecessary descriptions is to prevent obscuring the main idea of the present disclosure and to more clearly convey the main idea.

[0042] For the same reason, in the drawings, some elements can be exaggerated, omitted, or schematically shown. Also, the size of each element does not completely reflect the actual size. In the respective drawings, the same or corresponding elements are provided with the same or corresponding reference numerals.

[0043] The advantages and features of the present disclosure and a method of achieving them will become apparent by referring to the embodiments described below in detail in connection with the accompanying drawings. However, the present disclosure is not limited to the embodiments set forth below, but can be implemented in various different forms. The following embodiments are provided only to completely disclose the present disclosure and to inform those skilled in the art of the scope of the present disclosure, and the present disclosure is only limited by the scope of the claims. Throughout the specification, the same or similar reference numerals indicate the same or similar elements.

[0044] Here, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks. These computer program instructions can also be stored in a computer-usable or computer-readable memory that can direct a computer or other programmable apparatus to function in a particular manner, such that the instructions stored in the computer- usable or computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks.

[0045] Also, each block in the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the flowcharts. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks can sometimes be executed in the reverse order, depending upon the functionality involved.

[0046] As used in the embodiments of the present disclosure, a "unit" that performs a predetermined function refers to a software element or a hardware element such as a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC). However, the "unit" is not limited to software or hardware, and can be configured in software, hardware, or a combination of software and hardware. Further, the "unit" can be configured to operate independently of a processor or be configured to operate in conjunction with a processor. Furthermore, the "unit" can be configured to manage a database, a program, and a file, and perform a recording operation, a reading operation, and a processing operation in relation to the database, the program, and the file. The "unit" can be configured to perform a series of tasks or a job in conjunction with other units or to perform a single task or a job by itself. Further, the "unit" can be configured to transmit data to another "unit," receive data from another "unit," or transmit / receive data to / from another "unit" by using a different "unit."

[0047] As used herein, the term "terminal" or "device" can be referred to as a mobile station (MS), a user equipment (UE), a user terminal (UT), a wireless terminal, an access terminal (AT), a terminal, a subscriber unit (SU), a subscriber station (SS), a wireless device, a wireless communication device, a wireless transmit / receive unit (WTRU), a mobile node, a mobile phone (mobile), or any other terminology. Various examples of terminals can include a cellular phone, a smart phone having a wireless communication function, a personal digital assistant (PDA) having a wireless communication function, a wireless modem, a laptop computer having a wireless communication function, a photographing device (such as a digital camera) having a wireless communication function, a game device having a wireless communication function, a music storage and reproduction home appliance having a wireless communication function, an Internet home appliance capable of wireless Internet access and browsing, and a portable unit or terminal integrated with the above functions. In addition, the terminal can include a machine to machine (M2M) terminal and a machine type communication (MTC) terminal / device, but is not limited thereto. In the specification, the terminal can also be simply referred to as an electronic device or a device.

[0048] Hereinafter, the operation principle of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description of the present disclosure, a detailed description of known functions or configurations incorporated herein will be omitted when it is determined that the subject matter of the present disclosure is unnecessarily made unclear. The terms to be described below are terms defined in consideration of the functions in the present disclosure, and can differ according to users, user's intentions, or habits. Therefore, the definition of the terms should be made based on the contents throughout the specification.

[0049] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description of the embodiments of the present disclosure, a communication system using UWB will be described by way of example, but the embodiments of the present disclosure can be applied to other communication systems having similar technical backgrounds or characteristics. Examples thereof can include a communication system using Bluetooth or ZigBee. Therefore, based on the determination of those skilled in the art, the embodiments of the present disclosure can be applied to other communication systems with some modifications without significantly departing from the scope of the present disclosure.

[0050] Also, in describing the present disclosure, detailed descriptions of known functions or configurations incorporated herein will be omitted when it is determined that such detailed description can unnecessarily make the subject matter of the present disclosure unclear. The terms to be described below are terms defined in consideration of functions in the present disclosure, and can vary according to users, user's intentions, or habits. Therefore, the definition of the terms should be made based on the contents of the entire specification.

[0051] Generally, according to a recognition distance, wireless sensor network technology is mainly divided into wireless local area network (WLAN) technology and wireless personal area network (WPAN). In this case, wireless LAN is a technology based on IEEE 802.11, and is a technology that enables access to a backbone network within a radio of about 100 meters. Also, wireless personal area network is a technology based on IEEE 802.15, and includes Bluetooth, ZigBee, ultra-wideband (UWB), etc. A wireless network in which such wireless network technology is implemented can include a plurality of electronic devices. UWB can mean a frequency band itself to which UWB communication is applied. UWB enables safe and accurate ranging between devices. Thus, UWB enables relative positioning based on a distance between two devices or accurate device positioning based on a distance from a fixed device whose position is known.

[0052] Particular terms used in the following description are provided to help understanding of the present disclosure, and use of such particular terms can be changed to other forms without departing from the scope of the technical idea of the present disclosure.

[0053] The "ranging device" can be a device capable of performing a UWB device. In the present disclosure, the ranging device can be, for example, a ranging device (RDEV) or an enhanced ranging device (ERDEV) defined in IEEE 802.15.4 / 4z. In the present disclosure, the ranging device can be referred to as a ranging device, a UWB device, a UWB device E.

[0054] The "advertiser" can be a device (e.g., a ranging device) for transmitting a message for discovery. For example, the advertiser can be a device for transmitting (or broadcasting) an advertisement message through an initialization channel.

[0055] The "scanner" can be a device (e.g., a ranging device) for receiving a message for discovery. For example, the scanner can scan an initialization channel to receive an advertisement message.

[0056] A "controller" can be a device (e.g., ranging device) for defining and controlling a ranging control message (RCM) (or control message).

[0057] A "controllee" can be a device (e.g., ranging device) that uses ranging parameters within a RCM (or control message) received from a controller.

[0058] An "initiator" can be a device (e.g., ranging device) for initiating a ranging exchange.

[0059] A "responder" can be a device (e.g., ranging device) that responds to an initiator in a ranging exchange.

[0060] "In-band" is the underlying wireless technology, and can be data communication using UWB.

[0061] "Out-of-band (OBB)" is the underlying wireless technology, and can be data communication not using UWB.

[0062] A "UWB session" can be the duration of a communication from a start of a communication to a suspension of a communication between a controller and a controllee over UWB. In a UWB session, ranging frames (RFRAMEs) can be transmitted, data frames can be transmitted, or both ranging frames and data frames can be transmitted.

[0063] A "UWB session ID" can be an ID (e.g., 32-bit integer) that is shared between a controller and a controllee and identifies a UWB session.

[0064] A "UWB session key" can be a key for securing a UWB session. The UWB session key can be used to generate a scrambled timestamp sequence (STS). In the present disclosure, the UWB session key can be a UWB ranging session key (URSK), or can be simply referred to as a session key.

[0065] A "UWB subsystem (UWBS)" can be a hardware component for implementing UWB physical (PHY) and medium access control (MAC) specifications included in a UWB device. In the present disclosure, the UWB PHY and MAC specifications can be the PHY and MAC specifications defined in IEEE 802.15.4 / 4z. In the present disclosure, the UWBS can be referred to as a UWB component.

[0066] The "UWB-enabled application" can be an application for a service (UWB service). In the present disclosure, the "UWB-enabled application" can be simply referred to as an application or a UWB application.

[0067] The "service" can be an implementation of a user case that provides a service to an end user. In the present disclosure, the service can be referred to as a UWB service.

[0068] The "service data" can be data defined by a service provider and required to be transmitted between two ranging devices to implement a service.

[0069] The "service provider" can be an entity for defining and providing hardware and software required to provide a specific service to an end user.

[0070] The "UWB channel" can be one of candidate UWB channels allocated for UWB communication. The candidate UWB channel allocated for UWB communication can be a channel allocated for UWB communication. The UWB channel can be used for UWB communication (e.g., UWB ranging and / or transaction).

[0071] The "narrow band (NB) channel" can be a channel having a narrower bandwidth than the UWB channel. In an embodiment, the NB channel can be one sub-channel from the candidate UWB channels allocated for UWB communication, or can be a channel using a specific bandwidth of another available frequency band (e.g., a part of an industrial, scientific, and medical (ISM) band, etc.). The candidate channel allocated for UWB communication can be a channel allocated for UWB communication. The NB channel can be used for connection configuration of advertisement, device discovery, and / or additional parameter negotiation / authentication. For example, the NB channel can be used for transmitting or receiving a discovery beacon (message), an advertisement message, an additional advertisement message, a connection request message, and / or a connection confirmation message. In an embodiment, one or more NB channels can be managed together. In an embodiment, the NB channel can be used for in-band communication, similar to the UWB channel.

[0072] In addition, in describing the present disclosure, detailed descriptions of related known functions and configurations can be omitted if it is determined that such detailed descriptions can unnecessarily obscure the gist of the present disclosure.

[0073] It should be understood that the blocks in each flowchart and combination of flowcharts can be performed by one or more computer programs including instructions. The whole of the one or more computer programs can be stored in a single memory device, or the one or more computer programs can be divided into different parts stored in different multiple memory devices.

[0074] Any function or operation described herein can be processed by one processor or a combination of processors. The one processor or the combination of processors is a circuit that performs processing, and includes a circuit such as an application processor (AP, e.g., a central processing unit (CPU)), a communication processor (CP, e.g., a modem), a graphics processing unit (GPU), a neural processing unit (NPU) (e.g., an artificial intelligence (AI) chip), a Wi-Fi chip, a Bluetooth ® chip, a global positioning system (GPS) chip, a near field communication (NFC) chip, a connectivity chip, a sensor controller, a touch controller, a fingerprint sensor controller, a display driver integrated circuit (IC), an audio CODEC chip, a universal serial bus (USB) controller, a camera controller, an image processing IC, a microprocessor unit (MPU), a system on chip (SoC), an IC, or the like.

[0075] Hereinafter, various embodiments of the disclosure are described with reference to the accompanying drawings.

[0076] Figure 1a is an illustrative architecture of a UWB device according to embodiments of the disclosure.

[0077] Referring to Figure 1a , the UWB device 100a can include at least one PHY layer 110a, a MAC layer (MAC sublayer) 120a, and / or a higher layer 130a.

[0078] (1) PHY layer

[0079] The at least one PHY layer 110a can include a low-level control mechanism and a transceiver. In the disclosure, the transceiver can be referred to as an RF transceiver or a radio transceiver.

[0080] In an embodiment, the at least one PHY layer 110a can include at least one first transceiver for supporting a UWB channel, and at least one second transceiver for supporting an NB channel having a narrower bandwidth than the UWB channel. In the disclosure, the first transceiver can be referred to as a UWB transceiver, and the second transceiver can be referred to as an NB transceiver.

[0081] In another embodiment, the at least one PHY layer 11a can include a transceiver for supporting both UWB channels and NB channels (dual channel transceiver).

[0082] In an embodiment, the PHY layer 110a can support at least one of the following functions.

[0083] - Activation and deactivation functions of the transceiver (transceiver on / off function)

[0084] - Energy detection function

[0085] - Channel selection function

[0086] - Clear channel assessment (CCA) function

[0087] - Synchronization function

[0088] - Low-level signaling function

[0089] - UWB ranging, positioning, and localization function

[0090] - Spectrum resource management function

[0091] - Function of transmitting / receiving packets through a physical medium

[0092] (2) MAC layer

[0093] The MAC layer 120a provides an interface between the higher layer 130a and the PHY layer 120a.

[0094] In an embodiment, the MAC layer 120a can provide the following two services.

[0095] - MAC data service: a service enabling transmission or reception of a MAC protocol data unit (PDU) through the PHY

[0096] - MAC management service: a service for interfacing a MAC sublayer management entity (MLME) service access point (SAP) (MLME-SAP)

[0097] In an embodiment, the MAC layer 120a can support at least one of the following functions.

[0098] - Device discovery and connection configuration function

[0099] - Channel access function (function of accessing a physical channel (e.g., NB channel / UWB channel))

[0100] - Synchronization function (e.g., synchronization of NB channel (mirror channel) and UWB channel)

[0101] - Energy detection based interference mitigation function

[0102] - Functions related to narrowband signaling

[0103] - Guaranteed timeslot (GTS) management function

[0104] - Frame transfer function

[0105] - UWB ranging function

[0106] - PHY parameter change notification function

[0107] - Security function

[0108] (3) High layer

[0109] The high layer 130a can include a network layer for providing functions such as network configuration and message routing, and / or an application layer for providing a desired function of a device.

[0110] In an embodiment, the application layer can be a UWB-enabled application layer for providing a UWB service.

[0111] Figure 1b A communication system including a UWB device according to an embodiment of the disclosure is illustrated.

[0112] Referring to Figure 1b , the communication system 10b can include a first UWB device 100b and a second UWB device 200b. For example, Figure 1b The first UWB device 100b and / or the second UWB device 200b of Figure 1a may be an example of the UWB device 100a.

[0113] The first UWB device 100b can include a UWB-enabled application layer 110b, a framework 120b, at least one UWB transceiver 130b, and / or at least one NB transceiver 140b. In addition, the second UWB device 200b can include a UWB-enabled application layer 210b, a framework 220b, at least one UWB transceiver 230b, and / or at least one NB transceiver 240b.

[0114] Referring to Figure 1bThe UWB transceiver and the NB transceiver of each device are illustrated as separate elements, but the elements are divided according to their operation / function. That is, this is not intended to limit that the UWB transceiver and the NB transceiver are implemented as separate physical elements (e.g., separate chipsets). Thus, the UWB transceiver and the NB transceiver can be implemented as separate chipsets, respectively, and the UWB transceiver and the NB transceiver can be implemented as one integrated chipset.

[0115] The UWB-enabled application layer 110b or 210b can be a higher application layer for a UWB service.

[0116] The framework 120b or 220b can be an entity for integrating and managing the UWB transceiver 130b or 230b and the NB transceiver 140b or 240b. In an embodiment, the framework 120b or 220b can support functions for controlling UWB / NB communication (e.g., medium access control (MAC), UWB / NB transceiver synchronization function) and / or functions for delivering acquired information with the higher application layer 110b or 210b.

[0117] The UWB transceiver 130b or 230b can support at least one of candidate UWB channels for UWB communication. That is, the UWB transceiver 130b or 230 can support at least a UWB channel. The UWB transceiver 130b or 230b or at least one UWB channel supported by the UWB transceiver 130b or 230b can be used for UWB communication (e.g., UWB ranging and / or transaction). For example, the UWB transceiver 130b or 230b and at least one UWB channel supported by the UWB transceiver 130b or 230b can be used for transmission / reception of a data frame and / or a ranging frame (RFRAME).

[0118] The NB transceiver 140b or 240b can support at least one NB channel having a bandwidth narrower than a UWB channel (e.g., 50 MHz or less). The NB transceiver 140b or 240b or at least one NB channel supported by the NB transceiver 140b or 240b can be used for advertising (discovery) and / or narrowband signaling.

[0119] In an embodiment, the NB channel can be one sub-channel of the candidate UWB channels allocated for UWB communication. In another embodiment, the NB channel can be a channel using a specific bandwidth of other available bandwidth (e.g., a part of an industrial, scientific, and medical (ISM) band, etc.).

[0120] In an embodiment, the NB channel can be used for in-band communication like a UWB channel.

[0121] The NB channel has a narrower bandwidth than the UWB channel. However, the frequency band of the NB channel can be the same as or different from that of the UWB channel. For example, the NB channel and the UWB channel can use different frequency bands. For example, the channel number (or frequency band group number) of the candidate UWB channel including the sub-channel allocated to the NB channel can be different from the channel number (or frequency band group number) of the candidate UWB channel allocated to the UWB channel. In another example, the NB channel and the UWB channel can use the same frequency band. For example, the channel number (or frequency band group number) of the candidate UWB channel including the sub-channel allocated to the NB channel can be the same as the channel number (or frequency band group number) of the candidate UWB channel allocated to the UWB channel.

[0122] In an embodiment, the first UWB device 100b and the second UWB device 200b can perform UWB communication (procedure) (in-band communication) through a first radio link (UWB channel) configured via the UWB transceiver 130b of the first UWB device 100b and the UWB transceiver 230b of the second UWB device 200b.

[0123] In an embodiment, the first UWB device 100b and the second UWB device 200b can perform NB communication (procedure) (in-band communication) through a second radio link (NB channel) configured via the NB transceiver 140b of the first UWB device 100b and the NB transceiver 240b of the second UWB device 200b.

[0124] Figure 2 A method for performing an NB procedure and a UWB procedure by a UWB device according to an embodiment of the disclosure is illustrated.

[0125] Figure 2 The UWB device of the above-described Figure 1a or Figure 1b The UWB device of the above-described

[0126] Referring to Figure 2 , the UWB device can perform an NB procedure 210 and a UWB procedure 220. The NB procedure 210 and the UWB procedure 220 can be managed or controlled by a MAC layer (entity) of the UWB device.

[0127] (1) NB procedure 210

[0128] In the disclosure, the NB procedure 210 means a procedure performed using at least one NB channel. The NB procedure 210 can be performed before the UWB procedure 220.

[0129] The NB procedure 210 can include at least one of the following operations.

[0130] - an operation (announcing operation) of transmitting and / or receiving an announcing message by the UWB device through at least one NB channel

[0131] - an operation (discovering operation) of transmitting and / or receiving a discovery beacon (message) by the UWB device through at least one discovery channel

[0132] (2) UWB procedure 220

[0133] In the present disclosure, the UWB procedure 220 denotes a procedure performed using at least one UWB channel.

[0134] The UWB procedure 220 can include at least one of the following operations.

[0135] - an operation (UWB ranging operation) of performing UWB ranging by the UWB device with another UWB device

[0136] - an operation of exchanging service data by the UWB device with another UWB device

[0137] Figure 3 An example of a structure of a round and a ranging block for UWB ranging according to an embodiment of the present disclosure is illustrated.

[0138] In the present disclosure, a ranging block refers to a period of time for ranging. A ranging round can be a period of time sufficient for completing an entire distance measurement cycle involving a group of UWB devices participating in ranging exchange. A ranging slot can be a period of time sufficient for transmitting at least one ranging frame (RFRAME) (e.g., ranging initiation / response / termination messages, etc.).

[0139] Referring to Figure 3 One ranging block can include at least one ranging round, and each ranging round can include at least one ranging slot.

[0140] When the ranging mode is a block-based mode, the average time between consecutive ranging rounds can be a constant. Alternatively, when the ranging mode is an interval-based mode, the time between consecutive ranging rounds can be dynamically changed. That is, the interval-based mode can adapt a time structure with adaptive spacing.

[0141] The duration and number of slots included in a ranging round can be changed between ranging rounds. This can be configured by a control message of a controller.

[0142] In the present disclosure, a ranging block can be simply referred to as a block, a ranging round can be simply referred to as a round, and a ranging slot can be simply referred to as a slot.

[0143] Figure 4 A UWB ranging operation according to an embodiment of the present disclosure is illustrated.

[0144] Figure 4 The UWB ranging operation of the UWB procedure can be an example of a UWB ranging operation of the UWB procedure. Figure 2 The UWB ranging operation of the UWB procedure can be an example of a UWB ranging operation of the UWB procedure. Figure 4 The UWB ranging operation of the UWB procedure can be an example of a UWB ranging operation of the UWB procedure.

[0145] In an embodiment of the UWB ranging operation of the UWB procedure, the UWB ranging operation can be a single-sided two-way ranging (SS-TWR) or a double-sided two-way ranging (DS-TWR). Figure 4 In an embodiment of the UWB ranging operation of the UWB procedure, the UWB ranging operation can be a single-sided two-way ranging (SS-TWR) or a double-sided two-way ranging (DS-TWR).

[0146] Figure 4 In an embodiment of the UWB ranging operation of the UWB procedure, the controller 401 performs a role of an initiator and the controlee 402 performs a role of a responder.

[0147] Referring to operation 410a, the controller 401 can transmit a control message (ranging control message) for controlling the UWB ranging to the controlee 402. For example, the controller 401 can transmit the control message to the controlee 402 through the UWB channel. In an embodiment, the control message can include information about a rule (e.g., an initiator or a responder) of the UWB device, ranging slot index information, and / or address information of the UWB device.

[0148] Referring to operation 420a, the controller (initiator) 401 can transmit a ranging initiation message for initiating a ranging exchange to the controlee (responder) 402. For example, the controller (initiator) 401 can transmit the ranging initiation message to the controlee (responder) 402 through the UWB channel.

[0149] Referring to operation 430a, the controlee (responder) 402 can transmit a ranging response message corresponding to the ranging initiation message to the controller (initiator) 401. For example, the controlee (responder) 402 can transmit the ranging response message to the controller (initiator) 403 through the UWB channel.

[0150] ​In an embodiment, the ranging response message can further include measurement report information. The measurement report information can include, for example, AoA measurement, relay time measured by the responder, and a list of responder address and responder round time measurement. Here, the relay time can indicate a difference between a reception time of the ranging initiation message on the responder side and a transmission time of the ranging response message. Based on this, single-sided two-way ranging (SS-TWR) can be performed. The calculation of time-of-flight (ToF) and distance / direction / position by SS-TWR follows the scheme defined in IEEE 802.15.4z.

[0151] In the case of DS-TWR, the controller (initiator) 401 can further transmit a ranging final message (ranging response message) for completing ranging to the controllee (responder) 402. For example, the controller (initiator) 401 can further transmit the ranging final message to the controllee (responder) 402 through the UWB channel.

[0152] Figure 5 A structure of a channel used in a ranging area network according to an embodiment of the disclosure is illustrated.

[0153] In the disclosure, a ranging area network (RAN) can be a network including a plurality of UWB devices performing UWB ranging. The ranging area network can be referred to as a new generation (NG) ranging area network (RAN), and the UWB device can be referred to as an NB UWB device.

[0154] In an embodiment of the disclosure, Figure 5 In an embodiment of the disclosure, the ranging block, the ranging round, and the ranging slot transmitted through the UWB channel can be ranging blocks, ranging rounds, and ranging slots used in a session (e.g., a UWB ranging session) pre-configured by a UWB device (e.g., a first UWB device) for performing a role of an announcer / controller. Figure 1b In an embodiment of the disclosure,

[0155] Referring to Figure 5 , the NB channel and the UWB channel can be used in the ranging area network.

[0156] In an embodiment, the NB channel can be used to transmit and / or receive at least one announcement message. For example, the NB channel can be used to transmit or receive a first announcement message 510a and a second announcement message 510b.

[0157] In an embodiment, the UWB channel can be used to transmit and / or receive at least one ranging message for UWB ranging. The at least one ranging message can be transmitted / received through the ranging blocks 520a and 520b.

[0158] As Figure 3 Each ranging block can include at least one ranging round, and each ranging round can include at least one ranging slot, as described in

[0159] Figure 6a A multi-millisecond (MMS) UWB ranging operation according to an embodiment of the disclosure is illustrated.

[0160] To increase accuracy of a time-of-flight (ToF) and a link budget, MMS UWB can be a mode defined in IEEE 802.15.4ab in which a plurality of segments / packets are transmitted through UWB at regular intervals (e.g., 0.5 milliseconds, 1 millisecond, etc.).

[0161] A "link budget" means a sum of a loss factor and power required for data transmission between a transmitter and a receiver. The link budget refers to a value considering all losses and gains generated after a transmission signal is transmitted until it is received in a receiver. The link budget can be calculated considering transmission power, reception sensitivity, transmission distance, a transmission medium (air, obstacle, etc.), antenna gain, a loss factor, etc. In a UWB system, appropriate antennas, transmission power, receivers, and transmitters can be selected considering the link budget, so that performance can be enhanced.

[0162] Here, the transmission interval of the plurality of segments / packets is not limited to a specific length. For example, each segment (or UWB packet including each segment) can be multi-transmitted through UWB at an interval of 1 millisecond. Such a plurality of segments / packets can be used for UWB ranging (e.g., SS-TWR, DS-TWR, etc.). A UWB system needs to comply with a maximum transmission power defined in a regulatory agency in order to prevent generation of unnecessary interference in other wireless systems. For example, in a UWB system, in order to comply with the maximum transmission power, a transmittable data length per transmission can need to comply with 1 millisecond. In this case, when the packet length is increased due to an increase in data, there is a problem in that the transmission power of each pulse is reduced to comply with the maximum transmission power. Accordingly, by dividing the packet and transmitting the packet by using the MMS UWB communication, reduction in the transmission power of each pulse due to an insufficient data length can be prevented. For example, the data length can be maintained within 1 millisecond in order to transmit the UWB packet at the maximum transmission power.

[0163] Referring to Figure 6a , the first UWB device can transmit an NB packet 600 to the second UWB device through an NB channel, and transmit a plurality of UWB segments 601, 602, 603... to the second UWB device through a UWB channel. The NB packet 600 can provide initial time and frequency synchronization for the UWB segments 601, 602, 603... so that the UWB device is coupled to several 1 millisecond segments, whereby the link budget can be enhanced. In addition, the NB packet 600 can convey the transmission start point and period information of the UWB segments 601, 602, 603... and perform data offloading, thereby minimizing the UWB packet length.

[0164] Figure 6b An operation of performing communication using an NB channel and a UWB channel according to an embodiment of the disclosure is illustrated.

[0165] Referring to Figure 6b , the first UWB device 610 and the second UWB device 620 can transmit / receive NB packets 640 and 645 through an NB channel 630. Thereafter, the first UWB device 610 and the second UWB device 620 can transmit / receive a plurality of UWB segments / packets 650, 651, 652, 655, 656, 657... through a UWB channel 635 which is time / frequency synchronized by the NB packets 640 and 645. In this case, reception of the plurality of UWB segments / packets 650, 651, 652, 655, 656, 657... in the UWB channel can be scheduled by the NB packets 640 and 645. Thereafter, the first UWB device 610 and the second UWB device 620 can perform state signaling 660 between them.

[0166] Figure 7a is a view illustrating an MMS UWB ranging operation according to an embodiment of the disclosure.

[0167] In the UWB ranging operation, only an encoded frame format (or ranging sequence frame) is defined, and the link budget can be enhanced at the receiving side by multiple transmissions.

[0168] Referring to Figure 7a , the controller (initiator) 730 can transmit a poll packet 701 to the controllee (responder) 735 through the NB channel in the ranging slot 0 (731) of the ranging control phase 720. The controllee (responder) 735 can transmit a response (resp) packet 703 to the controller (initiator) 730 in the ranging slot 1 (732) of the ranging control phase 720. Thereafter, when the ranging phase 721 is initiated, the controller (initiator) 730 and the controllee (responder) 735 can transmit or receive UWB fragments 710, 711, 713, 715... through the UWB channel in the ranging slots 2 and 3 (733 and 734). In this case, when one UWB packet is divided into a plurality of UWB fragments and transmitted several times, the link budget is enhanced in proportion to the number of fragments. Accordingly, the controller (initiator) 730 and the controllee (responder) 735 can divide one UWB packet into UWB fragments 710, 713... and transmit it several times, thereby enhancing the link budget and transmission reliability.

[0169] The controllee (responder) 735 can transmit a report packet 705 to the controller (initiator) 730 in the ranging slot 12 (736) after the report offset in the measurement report phase 723. The controller (initiator) 730 can transmit a report packet 707 to the controllee (responder) 735 through the NB channel in the ranging slot 13 (737) after the report offset in the measurement report phase 723.

[0170] Figure 7b illustrates the number of UWB fragments determined based on the channel state according to an embodiment of the disclosure.

[0171] Referring to Figure 7b , the initiator 750, the first responder 751, and the second responder 753 can determine the number of UWB fragments based on the channel state according to the target link budget. In an embodiment, when the channel state between the initiator 750 and the first responder 751 is relatively good 760, the target link budget is low, and thus it can be determined that the UWB fragment 770 is transmitted once. In another embodiment, when the channel state between the initiator 750 and the second responder 753 is not relatively good 765, the target link budget is large, it can be determined that the UWB fragment 775 is transmitted several times.

[0172] In an embodiment, when the initiator and the responder transmit or receive the polling packet and the response packet in the NB channel, the number of UWB fragments can be determined by measuring the transmission and reception signal power intensity and comparing it with a preconfigured threshold.

[0173] Figure 8a A frame format of an NB polling, response, report message according to an embodiment of the disclosure is illustrated.

[0174] Reference Figure 8a Data is described in units of octets, and an octet refers to a minimum unit for representing data in 8 bits.

[0175] In an embodiment, the compressed frame format can include the following structure.

[0176] - 1 octet of message ID (0x00=polling, 0x01=response, 0x02=report...)

[0177] - 3 or 6 octets of session identifier / address

[0178] - ID specific data (variable length)

[0179] - 2 octets of CRC16

[0180] In an embodiment, the frame format of the NB report can include the following structure.

[0181] - 1 octet of message ID (0xtbd)

[0182] - 3 or 6 octets of session identifier / address

[0183] - 4 octets of timestamp (encrypted)

[0184] - 8 octets of cryptographic protection (MAC)

[0185] The cryptographic protection (MAC) is not a necessary field in the frame format of the NB report, and can be omitted.

[0186] In the case of the NB report, the number of timestamps varies according to the number of electronic devices, and if there is no CRC, the total data length can be 15, 19, and 23 octets, and if the CRC is included, the total data length can be 17, 21, and 25 octets.

[0187] The length of the PHR field in the frame format can be determined according to the number of timestamps (TS) and the sum of CRCs. Thus, in the compressed frame format, the physical service data unit (PSDU) size can be reduced by utilizing the redundancy between ENC-MIC-64 and CRC16.

[0188] Figure 8b is a view showing the transmission length of the poll, response, and report messages according to an embodiment of the disclosure.

[0189] Figure 8b shows the data transmission length when data is transmitted at a speed of 250 kbps.

[0190] Reference Figure 8b In an embodiment, when including a preamble, a start frame delimiter (SFD), a PHY header (PHR) field, a PSDU defined in IEEE 802.15.4z, and an RMI IE (TOF), the length 820 of the report message 800 can be 704 microseconds. On the other hand, when including a compressed physical service data unit (PSDU) referring to one timestamp, the length 825 of the report message 800 can be 480 microseconds.

[0191] In an embodiment, when including a preamble, an SFD, and a PHR field, a PSDU defined in IEEE 802.15.4z, and a nested information element (IE), the length 830 of the poll and response message 810 can be 576 microseconds. On the other hand, when including a compressed PSDU, the length 835 of the poll and response message 810 can be 352 microseconds.

[0192] That is, the transmission length of the NB poll, response, and report messages at a speed of 250 kbps is within 1 millisecond, and in most cases, it is possible to implement transmission within 1 millisecond, which is one ranging slot in a UWB device.

[0193] Figure 9a shows an example of a frame format of a report message according to an embodiment of the disclosure.

[0194] Figure 9a shows an example of a maximum 44-byte transmission length of a report message including a maximum PSDU. The report message includes a responder and an initiator report message. In the disclosure, a report after UWB ranging can refer to a ranging packet report (RPRT), and the terms "report" and "RPRT" can be used interchangeably.

[0195] Compared with Figure 8a , Figure 9a An example is illustrated in which not only a timestamp but also pass-through (PT) data is added. The PT data means user-defined data, rather than data basically transmitted in a UWB system. When up to four timestamps are used and PT data is included, a frame format 900 of a report frame can include the following structure.

[0196] - 1 octet of Message ID (0x02: RPRT Responder, 0x03: RPRT Initiator)

[0197] - 3 octets of Private Session Address (Private Salt value known from Polling)

[0198] - 1 octet of Message Control, setting the following message content

[0199] 0x00: MessageContent = Timestamp[4] + PTLen[1] + PTData[PTLen]

[0200] - 2 octets of CRC16

[0201] Referring to Figure 9a , the timestamp 910 can include a round trip time (RTT) or turnaround time (TAT) per 1 / 128 / 499.2 MHz resolution.

[0202] Referring to Figure 9a , when the report message further includes PTLen and PTData, at a transmission speed of 250 kbps, the data length is 1,600 microseconds, which exceeds 1 millisecond. Such a report message exceeds the length of a ranging slot, which is generally implemented as 1 millisecond, is transmitted using multiple ranging slots, and thus is not recommended for use in a UWB system. Accordingly, when the report message is transmitted at 500 kbps in a case where it further includes PT data, the data length is 892 microseconds within 1 millisecond, and thus a method for increasing a data transmission speed when transmitting a report message is proposed. However, in this case, a problem that a link budget deteriorates can be caused when the data transmission speed increases.

[0203] Figure 9b A signal ranging distance based on a link budget according to an embodiment of the disclosure is shown.

[0204] Referring to Figure 9aWhen two time stamps need to be transmitted or additional high layer data needs to be transmitted, a situation in which the reporting transmission length exceeds the slot length can occur depending on the data transmission speed. That is, in the NB channel, the report can be transmitted within 1 msec of one slot at 500 kbps or 1 Mbps, but two or more slots are needed in the case of 250 kbps.

[0205] In this case, in the NB channel, a method for transmitting the polling and response messages at 250 kbps and the report message at 500 kbps can be proposed. However, in order to increase the transmission speed, the bandwidth of the data signal is further widened, which can increase the possibility of collision with other wireless technologies or other signals and increase the use power, and the link budget can be deteriorated.

[0206] Therefore, when the report message is transmitted at 500 kbps, the link budget is deteriorated and the signal transmission distance is shortened, and thus, the ranging is performed by the polling / response and UWB packet accumulation, but the problem in which the report fails to be received can occur.

[0207] Reference Figure 9b It can be identified that there is a reduction in the transmission distance 955 of the report message transmitted at 500 kbps compared to the transition distance 950 of the polling and response messages transmitted at 250 kbps and the UWB MMS fragment transmitted through the UWB communication.

[0208] Therefore, in the present disclosure, a method for comparing the link budget in the case of transmitting at 500 kbps in the NB channel with the link budget in the case of transmitting the UWB MSS fragment and transmitting the report message at 500 kbps in the NB channel when the link budget in the case of transmitting at 500 kbps in the NB channel is lower is proposed.

[0209] For example, when the link budget in the case of transmitting at 250 kbps in the NB channel at a transmission power of 14 dBm is 115.22 dB, the link budget in the case of transmitting at 500 kbps in the NB channel is reduced to 112.21 dB, and the link budgets in the cases of transmitting the UWB MMS fragment once, four times, and eight times are 99.428 dB, 105.45 dB, and 108.46 dB, respectively, all of the link budgets are equal to or less than 112.21 dB, and thus the report message can be transmitted at 500 kbps in the NB channel.

[0210] On the other hand, considering the fading due to multipath, only the link budget in the NB channel is reduced, while the link budget in the UWB channel is not reduced. In this case, the link budget in the case of transmission at 250 kbps in the NB channel is 101.22 dB, and the link budget in the case of transmission at 500 kbps in the NB channel is reduced to 98.21 dB. Therefore, the link budget in the case of transmission at 500 kbps in the NB channel is less than the link budget in the case of transmission of the UWB MMS fragment once, four times, and eight times (99.428 dB, 105.45 dB, and 108.46 dB), and thus 500 kbps cannot be used.

[0211] According to the current regulation, the transmission power in the NB channel of the 2.5 MHz channel band is allowed to be 14 dBm (25 mW), but there is a case where the transmission power in the case of frequency hopping spread spectrum (FHSS) such as BLE is limited to 5 dBm (3 mW). In this case, in the NB channel, the link budget is lowered due to transmission power degradation, and 500 kbps of the NB channel can not be used when a report message is additionally transmitted.

[0212] For example, when the link budget in the case of transmission at 250 kbps in the NB channel with a transmission power of 5 dBm is 106.22 dB, the link budget in the case of transmission at 500 kbps in the NB channel is reduced to 103.21 dB, and the link budget in the case of transmission of the UWB MMS fragment once, four times, and eight times is 99.428 dB, 105.45 dB, and 108.46 dB, respectively, 500 kbps of the NB channel can be used when the UWB MMS fragment with a link budget of 103.21 dB or less is transmitted once, and 500 kbps of the NB channel cannot be used when the UWB MMS fragment is transmitted four times and eight times.

[0213] Therefore, when 500 kbps cannot be used due to degradation of the link budget at 500 kbps in the NB channel during transmission of a report message, transmission can be performed by utilizing the UWB low rate. Specifically, when transmission is performed by utilizing the low rate in the UWB channel, it is advantageous in use because it is robust to fading and has no fading loss in the case of multipath.

[0214] Therefore, in the disclosure, the transmission carrier (i.e., transmission band) of the report message can be selected based on the link budget expected according to the number of UWB segments (i.e., the number of accumulated UWB packets). That is, the report message can be transmitted in the NB channel at 500kbps only in the case where the number of times the UWB segment is transmitted has a link budget less than the link budget in the case where it is transmitted in the NB channel at 500kbps.

[0215] In an embodiment, it is assumed that when the link budget in the case where it is transmitted in the NB channel at 250kbps with a transmission power of 5dBm is 106.22dB, and the link budget in the case where it is transmitted in the NB channel at 500kbps is reduced to 103.21dB, the link budgets in the cases where the UWB MMS segment is transmitted once, twice, and thrice are 99.428dB, 102.44dB, and 104.2dB, respectively. In this case, the report message can be transmitted in the UWB channel at a low rate (1.95Mbps) only when the UWB MMS segment having a link budget greater than 103.21dB is transmitted thrice, and the report message can be transmitted in the NB channel at 500kbps when the UWB MMS segment having a link budget less than 103.21dB is transmitted once and twice.

[0216] In an embodiment, it is assumed that when the link budget in the case where it is transmitted in the NB channel at 250kbps with a transmission power of 5dBm is 99.221dB, and the link budget in the case where it is transmitted in the NB channel at 500kbps is reduced to 89.21dB, considering multipath fading, the link budgets in the cases where the UWB MMS segment is transmitted once, twice, and thrice are 99.428dB, 102.44dB, and 104.2dB, respectively. In this case, the link budgets in the cases where the UWB MMS segment is transmitted once, twice, and thrice are greater than 89.21dB corresponding to the link budget in the case where it is transmitted in the NB channel at 500kbps, and thus transmission is unconditionally transmitted at a UWB low rate.

[0217] Therefore, the initiator or responder for performing UWB ranging can determine the number of UWB segments as described in Figure 7b the disclosure, and can determine the channel in which the report message is to be transmitted as one of the NB channel and the UWB channel according to the link budget considering the number of UWB segments. In an embodiment, when the initiator determines the channel in which the report message is to be transmitted, the initiator can include configuration information in the announcement SoR message and transmit it to the responder. In an embodiment, when the responder determines the channel in which the report message is to be transmitted, the responder can include configuration information in the announcement response message and transmit it to the initiator.

[0218] Thus, when the report message is transmitted in the UWB channel at a low rate (1.95 Mbps), the transmission length is within the 1 millisecond slot size, and the link budget can also be satisfied.

[0219] Figure 10 is a view illustrating operations of an initiator and a responder according to an embodiment of the disclosure.

[0220] With reference to Figure 10 , the initiator can be a device for initiating a ranging exchange, and the responder can be a device for responding to the initiator during the ranging exchange. The initialization channel can be implemented within the NB channel. For example, the initialization channel can be implemented as a discovery channel or a coordination channel implemented in the NB channel. The ranging channel can be implemented as a channel for ranging included in the UWB channel and / or the NB channel.

[0221] In operation 1001, the responder can scan for the announcement poll message within a time interval configured in the initialization channel, and can fail to receive the announcement poll message. In operation 1003, the initiator can transmit (or broadcast) the announcement poll message in the initialization channel. According to an embodiment, the announcement poll message can be a message (or a beacon) for discovery transmitted (or broadcasted) by the controller and / or the initiator.

[0222] In operation 1005, the responder can scan for the announcement poll message within a time interval configured in the initialization channel. In operation 1007, based on a result of the scanning, the responder can receive the announcement poll message transmitted by the initiator. In operation 1009, the responder can transmit, to the initiator in the initialization channel, an announcement response message corresponding to the announcement poll message. According to an embodiment, the announcement response message can be a connection response of the responder in response to the announcement poll message.

[0223] In operation 1011, the initiator can transmit, to the responder in the initialization channel, a start of ranging (SoR) message corresponding to the announcement response message.

[0224] In operation 1013, the initiator can configure and / or apply a time offset for ranging initiation within the initialization channel. The time offset can be a time offset until the initiator and the responder initiate ranging within the ranging channel.

[0225] In operation 1015, the initiator can transmit, to the responder in the ranging channel, a poll message for ranging. In operation 1017, the responder can transmit, to the initiator in the ranging channel, a response message in response to the poll message. According to an embodiment, the ranging channel in which the poll message and the response message are transmitted or received can be implemented within the NB channel.

[0226] In operation 1019, the initiator and the responder can perform UWB ranging in the ranging channel. According to an embodiment, the ranging channel in which the UWB ranging is performed can be implemented in the UWB channel.

[0227] In operation 1021, the initiator can transmit the initiator's report (RPRT) information to the responder in the ranging channel. In operation 1023, the responder can transmit the responder's report (RPRT) information to the initiator in the ranging channel. According to an embodiment, the ranging channel in which the RPRT information is transmitted or received can be implemented in the NB channel or the UWB channel.

[0228] Operations 1011 and 1013 are initial setup operations for the UWB ranging of operations 1015 to 1023, and the channel (i.e., carrier) for the report transmission and the data transmission rate can be determined through a message (or packet) in the discovery procedure using the initial setup operation. According to an embodiment, the initiator and the responder can exchange parameters for the operation of the UWB ranging channel through the announcement response message and the start of ranging (SoR) message. For example, the parameters for the operation in the UWB ranging channel can include information on a starting point of a ranging round, information on a channel occupancy time (e.g., information on a channel occupancy time represented by multiple time units (TUs)), information on a length of a ranging block, information on a length of a ranging round, a number of UWB fragment transmissions, a channel (i.e., carrier) for the report transmission, a data transmission rate, etc.

[0229] In an embodiment, the announcement poll message transmitted by the initiator in operation 1007 can include the following PSDU structure (12 octets).

[0230] - 1 octet of message ID (0x20)

[0231] - 3 octets of private address + 3 bytes of private salt

[0232] - 1 octet of message control, setting the following message content

[0233] 0x0: MessageContent = Len[SupportedSetupVersionList] and SupportedSetupVersionList = [0x01]

[0234] - 2 octets of CRC16

[0235] In an embodiment, the announce response message sent by the responder in operation 1009 can include the following PSDU structure (21 octets).

[0236] - 1 octet of Message ID (0x21)

[0237] - 3 octets of Private Address (private salt value known from ADV-POLL)

[0238] - 1 octet of Message Control, set the following message content

[0239] 0x01 (set request): MessageContent = [NBChannelSelect[2] + UWBPhyCfg[2] + UWBMACfg[2] + NBPHYCfg[1] + NBMACCfg[8]

[0240] - 2 octets of CRC16

[0241] In an embodiment, the SoR message sent by the initiator in operation 1011 can include the following PSDU structure (24 octets).

[0242] - 1 octet of Message ID (0x22)

[0243] - 3 octets of Private Address (private salt value known from ADV-POLL)

[0244] - 1 octet of Message Control, set the following message content

[0245] 0x01 (set): Same fields as ADV-RESP, but TimeOffset[2] and ChannelSeed[1] are added in front

[0246] - 2 octets of CRC16

[0247] The message control field of the SoR message can be the same as that of the announce response message, and TimeOffset and ChannelSeed[1] can be added.

[0248] The time offset can indicate the length of the starting point of the first ranging block from the termination of the SoR, and can be one of 0 to 65535 microseconds. The channel seed refers to a field that initializes a channel switching function.

[0249] Figure 11 An example of a field included in an announce response message (or a ranging start (SoR) message) according to an embodiment of the disclosure is shown.

[0250] As Figure 9a and Figure 9b described in Figure 11 The announce response message or a ranging start (SoR) message includes configuration information of the NB channel or the UWB channel when one of the NB channel and the UWB channel in which the ranging report message is transmitted considering the link budget is transmitted after the UWB ranging in the UWB communication is shown.

[0251] In an embodiment, when the responder determines the channel in which the report message is to be transmitted, the responder can include the configuration information in the announce response message and transmit it to the initiator. In another embodiment, when the initiator determines the channel in which the report message is to be transmitted, the initiator can include the configuration information in the announce SoR message and transmit it to the responder.

[0252] Figure 11 Only the structure of the announce response message is shown, and as shown in Figure 10 the same description below can be applied to a ranging start (SoR) message having the same message control field.

[0253] Referring to Figure 11 , the announce response message can include a UWB PHY configuration field 1100 within the message control field, and configure a UWB measurement report within the UWB PHY configuration field 1100. In an embodiment, parameters for the UWB measurement report can be configured in eight bits of bits 16 to 23 within the UWB PHY configuration field 1100. In an embodiment, whether UWB-based measurement report is activated can be indicated using bit 16 within the UWB PHY configuration field 1100. For example, when the field is "0", UWB-based measurement report deactivation can be indicated, and when the field is "1", UWB-based measurement report activation can be indicated. In an embodiment, a data rate can be indicated together with a channel coding scheme by using bit 17 within the UWB PHY configuration field 1100. For example, when the field is "0", a binary convolutional code (BCC) scheme can be indicated as 1.96 Mbps, and when the field is "1", a low-density parity-check code (LDPC) scheme can be indicated as 1.96 Mbps.

[0254] Figure 12 An example of a field included in an announce response message (or a ranging start (SoR) message) according to an embodiment of the disclosure is shown.

[0255] As Figure 9a and Figure 9b described inFigure 12 After UWB ranging in UWB communication, the report message is transmitted, and one of the NB channel and the UWB channel is transmitted considering the link budget, the announce response message or the ranging start (SoR) message includes configuration information of the NB channel or the UWB channel.

[0256] In an embodiment, when the responder determines the channel in which the report message is to be transmitted, the responder can include the configuration information in the announce response message and transmit it to the initiator. In another embodiment, when the initiator determines the channel in which the report message is to be transmitted, the initiator can include the configuration information in the announce SoR message and transmit it to the responder.

[0257] Figure 12 Only the structure of the announce response message is shown, and as shown in Figure 10 the same description below can be applied to a ranging start (SoR) message having the same message control field.

[0258] Referring to Figure 12 , the announce response message can include a UWB PHY configuration field 1200 within the message control field, and the UWB PHY can be mapped for each interval, similar to the NB PHY configuration within the UWB PHY configuration field 1200. In an embodiment, the PSD rate, the PSDU encoding scheme, the PHR rate, and the PHR encoding scheme shown in Table 1 below can be indicated using eight bits of bits 0 to 7 within the UWB PHY configuration field 1100.

[0259]

Table 1

[0260]

[0261] Alternatively, whether LDPC is enabled shown in Table 2 below can be indicated using eight bits of bits 0 to 7 within the UWB PHY configuration field 1100, or Table 1 and Table 2 can be indicated together.

[0262]

Table 2

[0263]

[0264] Table 1 and Table 2 are related to dynamic PHR code, and the dynamic PHR code can be defined in IEEE 802.15.4ab, and the PHR can be divided into PHR 1 and PHR 2. PHR 1 can encode the data transmission rate of PSDU and whether LDPC encoding is used for PSDU, as shown in Table 3 below. In Table 3, the data rate field of PHR 1 indicates the data rate of the received PHY payload field. The LDPC indication field of PHR 1 shows whether LDPC encoding is applied. The content of PHR 1 determines the modulation of PHR 2.

[0265] [Table 3]

[0266]

[0267] Figure 13 An example of a field included in an announcement response message or a ranging start (SoR) message according to an embodiment of the disclosure is shown.

[0268] As Figure 9a and Figure 9b described, Figure 13 An announcement response message or a ranging start (SoR) message includes configuration information of an NB channel or a UWB channel when one of the NB channel and the UWB channel is transmitted considering link budget when a report message is transmitted after UWB ranging in a UWB communication is shown.

[0269] In an embodiment, when a responder determines a channel in which a report message is to be transmitted, the responder can include configuration information in an announcement response message and transmit it to an initiator. In another embodiment, when an initiator determines a channel in which a report message is to be transmitted, the initiator can include configuration information in an announcement SoR message and transmit it to a responder.

[0270] Figure 13 Only the structure of the announcement response message is shown, and as shown in Figure 10 the same description below can be applied to a ranging start (SoR) message having the same message control field.

[0271] Referring to Figure 13, the announcement response message can include an NB PHY configuration field 1300 within a message control field, select a meaningless value in an NB reporting phase value of the NB PHY configuration field 1300, and thus indicate NB transmission deactivation. In an embodiment, when the NB transmission deactivation is indicated, UWB transmission activation can be pre-configured. For example, when bits 4 to 7 of the NB PHY configuration field 1300 indicate values (such as "000", "111", and "001") that are not mapped to the NB PHY, UWB transmission activation can be indicated by the NB transmission deactivation. In an embodiment, when bits 4 to 7 of the NB PHY configuration field 1300 indicate values (such as "000", "111", and "001") that are not mapped to the NB PHY, it can be pre-configured that a data rate is shown in PHR 1 by using a dynamic PHR mode, or a report message is transmitted to expect a UWB 1.95 Mbps whose link budget is higher than that of the NB 250 kbps.

[0272] Figure 14 is a flowchart illustrating an operation of a UWB device according to an embodiment of the disclosure.

[0273] Figure 14 may be illustrated in the UWB device Figure 10 the operation of the initiator shown.

[0274] Referring to Figure 14 , in operation S1410, the initiator can receive a second message (e.g., an announcement response (Adv RESP) message) from the second UWB device through the NB channel in response to a first message (e.g., an announcement poll (Adv Poll) message).

[0275] In operation S1420, the initiator can transmit a third message (e.g., a ranging start (SoR) message) corresponding to the second message (e.g., the Adv RESP message) to the second UWB device through the NB channel. In an embodiment, the initiator can determine a channel in which a fourth message (e.g., a ranging packet report (RPRT) message) is to be transmitted based on a link budget between the first UWB device and the second UWB device. In an embodiment, a configuration of the channel in which the fourth message (e.g., the RPRT message) is to be transmitted can be included in the third message (e.g., the SoR message) and transmitted. In an embodiment, the initiator can compare a first link budget with a second link budget in the NB channel according to a packet transmission count during packet transmission in an MMS scheme in the UWB channel, and determine the channel in which the fourth message is to be transmitted by selecting the channel in which the fourth message (e.g., the RPRT message) is to be transmitted as the UWB channel in the case where the second link budget is greater than the first link budget.

[0276] In an embodiment, the configuration information can be one of: indication of deactivation of NB transmission in a NB PHY configuration field within the third message (e.g., SoR message), indication of whether UWB-based RPRT is activated in a UWB PHY configuration field within the third message (e.g., SoR message), and indication of data rate in the UWB PHY configuration field within the third message (e.g., SoR message).

[0277] In operation S1430, the initiator can perform UWB ranging with the second UWB device based on the third message (e.g., SoR message).

[0278] In operation S1440, the initiator can transmit a fourth message (e.g., RPRT message) to the second UWB device over one of the NB channel or the UWB channel based on the link budget. In an embodiment, when the fourth message can be transmitted in the NB channel, the first message and the second message can be transmitted on a first carrier of the NB channel, the fourth message can be transmitted on a second carrier of the NB channel, and the first carrier and the second carrier can be different from each other.

[0279] In an embodiment, the second message (e.g., Adv RESP message) can include configuration of a channel in which the fourth message (e.g., RPRT message) is to be transmitted, determined based on a link budget between the first UWB device and the second UWB device. In an embodiment, the configuration information can be one of: indication of deactivation of NB transmission in a NB PHY configuration field within the second message (e.g., Adv RESP message), indication of whether UWB-based RPRT is activated in a UWB PHY configuration field within the second message (e.g., Adv RESP message), and indication of data rate in the UWB PHY configuration field within the second message (e.g., Adv RESP message).

[0280] Figure 15 is a flowchart illustrating operations of a UWB device according to an embodiment of the disclosure.

[0281] Figure 15 may illustrate operations of a responder in a UWB device Figure 10 may illustrate operations of a responder in a UWB device

[0282] In an embodiment, in operation S1510, the responder can transmit a second message (e.g., Adv RESP message) in response to the first message (e.g., Adv Poll message) to the first UWB device through the NB channel. In an embodiment, the responder can determine a channel in which a fourth message is to be transmitted based on a link budget between the first UWB device and the second UWB device, and include configuration information of the determined channel in the second message (e.g., Adv RESP message) and transmit the configuration information.

[0283] In an embodiment, the configuration information can be one of an indication of deactivation of NB transmission in an NB PHY configuration field within the second message (e.g., Adv RESP message), an indication of whether UWB-based RPRT is activated in a UWB PHY configuration field within the second message (e.g., Adv RESP message), and an indication of a data rate in the UWB PHY configuration field within the second message (e.g., Adv RESP message).

[0284] In operation S1520, the responder can receive a third message (e.g., SoR message) corresponding to the second message (e.g., Adv RESP message) from the first UWB device through the NB channel. In an embodiment, the third message (e.g., SoR message) can include configuration information of a channel in which a fourth message (e.g., RPRT message) is to be transmitted, which is determined based on a link budget between the first UWB device and the second UWB device. In an embodiment, the configuration information can be one of an indication of deactivation of NB transmission in an NB PHY configuration field within the third message (e.g., SoR message), an indication of whether UWB-based RPRT is activated in a UWB PHY configuration field within the third message, and an indication of a data rate in the UWB PHY configuration field within the third message (e.g., SoR message).

[0285] In operation S1530, the responder can perform UWB ranging with the first UWB device based on the third message (e.g., SoR message).

[0286] In operation S1540, the responder can transmit a fourth message (e.g., RPRT message) to the second UWB device through one of the NB channel and the UWB channel. In an embodiment, the responder can transmit the fourth message (e.g., RPRT message) to the first UWB device through one of the NB channel and the UWB channel based on the link budget. In an embodiment, in a case where a first link budget in the NB channel is compared with a second link budget during packet transmission in the MMS scheme in the UWB channel and the second link budget is greater than the first link budget, the channel in which the fourth message (e.g., RPRT message) is to be transmitted can be determined as the UWB channel.

[0287] In an embodiment, when the fourth message is transmitted in the NB channel, the first message and the second message can be transmitted on a first carrier of the NB channel, the fourth message can be transmitted on a second carrier of the NB channel, and the first carrier and the second carrier can be different from each other.

[0288] Figure 16 A structure of a UWB device according to an embodiment of the disclosure is illustrated.

[0289] In an embodiment of the disclosure, Figure 16 the UWB device can correspond to Figure 1a , Figure 1b , Figures 2 to 5 , Figure 6a , Figure 6b , Figure 7a , Figure 7b , Figure 8a , Figure 8b , Figure 9a , Figure 9b and Figures 10 to 15 the UWB device illustrated in FIGS. 1 to 3, or can be an electronic device including the UWB device or a part of the UWB device.

[0290] In an embodiment of the disclosure, Figure 16 the UWB device can be a UWB device for performing a role of an initiator and / or a controller. In another embodiment, the UWB device can be a UWB device for performing a role of a responder and / or a controlled.

[0291] Referring to Figure 16 , the UWB device can include a transceiver 1610, a controller 1620, and a storage 1630. The control unit in the disclosure can be defined as a circuit, an application specific integrated circuit, or at least one processor.

[0292] The transceiver 1610 can transmit or receive a signal with another entity. The transceiver 1610 can transmit data to or from another device by using, for example, at least one NB channel and / or at least one UWB channel.

[0293] In an embodiment, the transceiver 1610 can include at least one first transceiver supporting an NB channel and at least one second transceiver supporting a UWB channel. In another embodiment, the transceiver 1610 can include at least one transceiver supporting both an NB channel and a UWB channel.

[0294] The controller 1620 can control the overall operation of the electronic device according to the embodiments proposed in the disclosure. For example, the controller 1620 can control a signal flow between the respective blocks to perform operations according to the flowcharts described above. Specifically, for example, the controller 1620 can control a signal flow between the respective blocks to perform operations according to the flowcharts described above with reference to Figure 1a ,Figure 1b 、 Figures 2 to 5 、 Figure 6a 、 Figure 6b 、 Figure 7a 、 Figure 7b 、 Figure 8a 、 Figure 8b 、 Figure 9a 、 Figure 9b and Figures 10 to 15 the operation of the UWB device described.

[0295] The storage 1630 can store at least one of information transmitted and received through the transceiver 1610 and information generated through the controller 1620. For example, the storage 1630 can store information and data required for the method described Figure 1a 、 Figure 1b 、 Figures 2 to 5 、 Figure 6a 、 Figure 6b 、 Figure 7a 、 Figure 7b 、 Figure 8a 、 Figure 8b 、 Figure 9a 、 Figure 9b and Figures 10 to 15 the method described.

[0296] According to an embodiment, the controller 1620 can be configured to receive, from the second UWB device, an advertisement response (Adv RESP) message in response to an advertisement poll (Adv Poll) message through an NB channel, transmit, to the second UWB device, a ranging start (SoR) message corresponding to the Adv RESP message through the NB channel, perform UWB ranging with the second UWB device based on the SoR message, and transmit, to the second UWB device, a ranging packet report (RPRT) message. According to an embodiment, the RPRT message can be transmitted through one of an NB channel and a UWB channel based on a link budget between the first UWB device and the second UWB device.

[0297] According to an embodiment, the controller 1620 can be configured to determine a channel in which the RPRT message is to be transmitted based on a link budget between the first UWB device and the second UWB device, and the SoR message can include a configuration of the determined channel.

[0298] According to an embodiment, the controller 1620 can be further configured to compare a first link budget and a second link budget in the NB channel according to a packet transmission count during packet transmission in the MMS scheme in the UWB channel, and in case that the second link budget is greater than the first link budget, select the channel in which the RPRT message is to be transmitted as the UWB channel.

[0299] According to an embodiment, the controller 1620 can be configured to transmit, to the first UWB device, an Adv RESP message in response to the AdvPoll message through the NB channel, receive, from the first UWB device, a SoR message corresponding to a second message through the NB channel, perform UWB ranging with the first UWB device based on the SoR message, and transmit an RPRT message to the first UWB device.

[0300] According to an embodiment, the RPRT message can be transmitted through one of the NB channel and the UWB channel based on a link budget between the first UWB device and the second UWB device.

[0301] According to an embodiment, the controller 1620 can be configured to determine a channel in which the RPRT message is to be transmitted based on a link budget between the first UWB device and the second UWB device. According to an embodiment, the Adv RESP message can include configuration information of the determined channel.

[0302] In the above detailed embodiments of the disclosure, according to the presented detailed embodiments, the elements included in the disclosure are expressed in singular or plural. However, the singular form or the plural form is to facilitate the description to be appropriately selected for the presented case, and the disclosure is not limited by the elements expressed in singular or plural. Therefore, the elements expressed in plural can also include a single element, or the elements expressed in singular can also include a plurality of elements.

[0303] While the disclosure has been illustrated and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.

Claims

1. A method performed by a first ultra-wideband (UWB) device, the method comprising: Receive an AdvRESP message, an announcement response to the Adv Poll message, from the second UWB device via a narrowband NB channel; A ranging start SoR message corresponding to the Adv RESP message is sent to the second UWB device via the NB channel; Based on the SoR message, perform UWB ranging with the second UWB device; as well as Based on the configuration information of the channel in which the RPRT message is to be sent, a ranging packet report (RPRT) message is sent to the second UWB device through one of the NB channel and the UWB channel. The configuration information is included in the SoR message.

2. The method according to claim 1, further comprising: Based on the link budget between the first UWB device and the second UWB device, the channel in which the RPRT message will be sent is determined. The channels in which the RPRT message is to be sent include: The first link budget in the NB channel is compared with the second link budget based on the packet transmission count during packet transmission in the UWB channel using the multi-millisecond MMS scheme; and If the second link budget is greater than the first link budget, the UWB channel is selected as the channel through which the RPRT message is to be sent.

3. The method according to claim 1, wherein, In the case where the RPRT message is sent on the NB channel: The Adv Poll message and the Adv RESP message are transmitted on the first carrier of the NB channel; The RPRT message is transmitted on the second carrier of the NB channel.

4. The method according to claim 1, wherein, The configuration information in the SoR message indicates the deactivation sent by the NB.

5. The method according to claim 1, wherein, The configuration information indicates at least one of the following: The UWB PHY configuration field within the SoR message indicates whether UWB-based RPRT is activated, and The data rate is indicated in the UWB PHY configuration field within the SoR message.

6. The method according to claim 1, wherein, The Adv RESP message includes second configuration information for the channel in which the RPRT message is to be sent by the second UWB device, and The second configuration information indicates at least one of the following: The Adv RESP message instructs the NB to send deactivation. The UWB PHY configuration field within the Adv RESP message indicates whether UWB-based RPRT is activated, and The data rate is indicated in the UWB PHY configuration field within the Adv RESP message.

7. A method performed by a second ultra-wideband (UWB) device, the method comprising: Send an AdvRESP message in response to the Adv Poll message to the first UWB device via the narrowband NB channel; The ranging start SoR message corresponding to the Adv RESP message is received from the first UWB device via the NB channel. Based on the SoR message, perform UWB ranging with the first UWB device; as well as Based on the configuration information of the channel in which the RPRT message is to be sent, a ranging packet report (RPRT) message is sent to the first UWB device through one of the NB channel and the UWB channel. The configuration information is included in the Adv RESP message.

8. The method according to claim 7, wherein, The SoR message includes second configuration information of the channel in which the RPRT message is to be sent by the first UWB device, and The second configuration information in the SoR message indicates the deactivation sent by the NB.

9. The method according to claim 8, wherein, The second configuration information indicates at least one of the following: The UWB PHY configuration field within the SoR message indicates whether UWB-based RPRT is activated, and the UWB PHY configuration field within the SoR message indicates the data rate.

10. The method of claim 7, further comprising: Based on the link budget between the first UWB device and the second UWB device, the channel in which the RPRT message will be sent is determined. The channels in which the RPRT message is to be sent include: The first link budget in the NB channel is compared with the second link budget based on the packet transmission count during packet transmission in the UWB channel using the multi-millisecond MMS scheme; and If the second link budget is greater than the first link budget, the UWB channel is selected as the channel through which the RPRT message will be sent. The Adv Poll message and the Adv RESP message are transmitted on the first carrier of the NB channel, and The RPRT message is transmitted on the second carrier of the NB channel.

11. The method according to claim 7, wherein, The configuration information indicates one of the following: The Adv RESP message instructs the NB to send deactivation. The UWB PHY configuration field within the Adv RESP message indicates whether UWB-based RPRT is activated, and The data rate is indicated in the UWB PHY configuration field within the Adv RESP message.

12. A first ultra-wideband (UWB) device, comprising: transceiver; and At least one processor, coupled to the transceiver and configured to: Receive an AdvRESP message, an announcement response to the Adv Poll message, from the second UWB device via a narrowband NB channel; A ranging start SoR message corresponding to the Adv RESP message is sent to the second UWB device via the NB channel; Based on the SoR message, perform UWB ranging with the second UWB device; as well as Based on the configuration information of the channel in which the RPRT message is to be sent, a ranging packet report (RPRT) message is sent to the second UWB device through one of the NB channel and the UWB channel. The configuration information is included in the SoR message.

13. The first UWB device according to claim 12, wherein, The configuration information in the SoR message indicates the deactivation sent by the NB. The Adv RESP message includes second configuration information of the channel in which the RPRT message is to be sent by the second UWB device, and The second configuration information in the Adv RESP message indicates the deactivation sent by the NB.

14. A second ultra-wideband (UWB) device, comprising: transceiver; and At least one processor, coupled to the transceiver and configured to: Send an AdvRESP message in response to the Adv Poll message to the first UWB device via the narrowband NB channel; The ranging start SoR message corresponding to the Adv RESP message is received from the first UWB device via the NB channel. Based on the SoR message, perform UWB ranging with the first UWB device; as well as Based on the configuration information of the channel in which the RPRT message is to be sent, a ranging packet report (RPRT) message is sent to the first UWB device through one of the NB channel and the UWB channel. The configuration information is included in the Adv RESP message.

15. The second UWB device according to claim 14, in, The SoR message includes second configuration information for the channel in which the RPRT message is to be sent by the first UWB device. The configuration information in the Adv RESP message indicates the deactivation sent by the NB, and The second configuration information in the SoR message indicates the deactivation sent by the NB.

Images