Bluetooth channel sounding method, device, communication system, and storage medium

Abstract

A Bluetooth channel sounding method, a device, a communication system, and a storage medium. The method can be executed by a first device, and comprises: establishing an asynchronous connection-oriented logical transport (ACL) connection with a first node in a second device; and using the ACL connection to separately sound each node in the second device, wherein the second device comprises at least two nodes, and all nodes in the second device use a same Bluetooth device address. The reliability of Bluetooth channel sounding can be effectively ensured, the communication process is simplified, and the sounding efficiency is improved.

Description

Bluetooth channel detection methods, devices, communication systems and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to Bluetooth channel detection methods, devices, communication systems and storage media. Background Technology

[0002] Compared to conventional distance estimation based on received signal strength, Bluetooth channel sounding works by measuring signal propagation time and phase, thus achieving higher ranging accuracy.

[0003] Summary of the Invention

[0004] This disclosure provides a Bluetooth channel detection method, device, communication system, and storage medium.

[0005] According to a first aspect of the present disclosure, a Bluetooth channel detection method is provided, executed by a first device, the method comprising:

[0006] Establish an asynchronous connection-oriented logical transport (ACL) connection with the first node in the second device;

[0007] Use the ACL connection to probe each node in the second device;

[0008] The second device includes at least two nodes, and all nodes in the second device use the same Bluetooth device address.

[0009] According to a second aspect of the present disclosure, a Bluetooth channel detection method is provided, executed by a first node in a second device, the method comprising:

[0010] Establish an asynchronous connection-oriented logical transport ACL connection with the first device;

[0011] The ACL connection is used by the first device to probe each node in the second device, the second device including at least two nodes, and all nodes in the second device using the same Bluetooth device address.

[0012] According to a third aspect of the present disclosure, a Bluetooth device is provided, the Bluetooth device comprising:

[0013] The transceiver module is used to establish an asynchronous connection-oriented logical transmission ACL connection with the first node in the second device;

[0014] The transceiver module is also used to probe each node in the second device using the ACL connection;

[0015] The second device includes multiple nodes, and all nodes in the second device use the same Bluetooth device address.

[0016] According to a fourth aspect of the present disclosure, a Bluetooth device is provided, the Bluetooth device comprising:

[0017] The transceiver module is used to establish an asynchronous connection-oriented logical transmission ACL connection with the first device;

[0018] The ACL connection is used by the first device to probe each node in the second device, which includes multiple nodes, and all nodes in the second device use the same Bluetooth device address.

[0019] According to a fifth aspect of the present disclosure, a Bluetooth device is provided, comprising:

[0020] One or more processors;

[0021] A memory coupled to the one or more processors, the memory including executable instructions that, when executed by the one or more processors, cause the first device to perform the Bluetooth channel detection method described in the first aspect.

[0022] According to a sixth aspect of the present disclosure, a Bluetooth device is provided, comprising:

[0023] One or more processors;

[0024] A memory coupled to the one or more processors, the memory including executable instructions that, when executed by the one or more processors, cause the first device to perform the Bluetooth channel detection method described in the second aspect.

[0025] According to a seventh aspect of the present disclosure, a communication system is provided, including a first device and a second device, wherein the first device is configured to implement the Bluetooth channel detection method described in the first aspect, and a first node in the second device is configured to implement the Bluetooth channel detection method described in the second aspect.

[0026] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions that, when executed on a Bluetooth device, cause the Bluetooth device to perform the Bluetooth channel detection method as described in the first or second aspect.

[0027] In the above implementation, by setting all nodes in the second device to the same Bluetooth device address, the ACL connection can be effectively reused. The first device can communicate and probe with all nodes in the second device through a single ACL connection, which effectively ensures the reliability of Bluetooth channel probe, simplifies the communication process, and improves efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0029] Figure 1A is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0030] Figure 1B is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0031] Figure 2 is an exemplary interactive schematic diagram of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0032] Figure 3A is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0033] Figure 3B is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0034] Figure 3C is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0035] Figure 3D is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0036] Figure 4A is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0037] Figure 4B is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0038] Figure 4C is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0039] Figure 4D is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0040] Figure 5 is an exemplary interactive schematic diagram of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0041] Figure 6A is an exemplary flowchart of a Bluetooth channel detection method provided according to an embodiment of the present disclosure.

[0042] Figure 6B is an exemplary schematic diagram of a one-to-many topology for Bluetooth channel detection provided according to an embodiment of the present disclosure.

[0043] Figure 6C is an exemplary schematic diagram of a Bluetooth channel detection process provided according to an embodiment of the present disclosure.

[0044] Figure 7A is an exemplary structural diagram of a Bluetooth device provided according to an embodiment of the present disclosure.

[0045] Figure 7B is an exemplary structural diagram of a Bluetooth device provided according to an embodiment of the present disclosure.

[0046] Figure 8A is an exemplary structural diagram of a communication device provided according to an embodiment of the present disclosure.

[0047] Figure 8B is an exemplary structural diagram of a communication device provided according to an embodiment of the present disclosure. Detailed Implementation

[0048] This disclosure provides a Bluetooth channel detection method, device, communication system, and storage medium.

[0049] In a first aspect, embodiments of this disclosure provide a Bluetooth channel detection method, executed by a first device, the method comprising:

[0050] Establish an asynchronous connection-oriented logical transport ACL connection with the first node in the second device;

[0051] Use the ACL connection to probe each node in the second device;

[0052] The second device includes at least two nodes, and all nodes in the second device use the same Bluetooth device address.

[0053] In the above embodiments, by setting all nodes in the second device to the same Bluetooth device address, the ACL connection can be effectively reused. The first device can communicate and probe with all nodes in the second device through a single ACL connection, which effectively ensures the reliability of Bluetooth channel probe, simplifies the communication process, and improves efficiency.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, each node in the second device includes at least one antenna.

[0055] In the above embodiments, the number of antennas of the nodes in the second device can be one or more, which effectively improves the flexibility of Bluetooth communication.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, the step of using the ACL connection to probe each node in the second device includes:

[0057] Interact with the first node to exchange first information, which is used to indicate antenna configuration;

[0058] Based on the first information, the ACL connection is used to probe each node in the second device.

[0059] In the above embodiments, antenna configuration can be negotiated by exchanging first information, so that the first device and the second device can reuse ACL connection according to antenna configuration, and can detect each node more effectively.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following:

[0061] Antenna Configuration Index (ACI);

[0062] The number of antennas in the first device;

[0063] The total number of antennas at multiple nodes in the second device;

[0064] The number of nodes in the second device;

[0065] The number of antennas at each node of the second device;

[0066] Total number of antenna paths;

[0067] Antenna configuration type.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the step of using the ACL connection to probe each node in the second device includes:

[0069] For any sub-event of Bluetooth channel detection, the node to be tested corresponding to the sub-event is determined according to a preset order;

[0070] Send a probe signal to the node under test;

[0071] Receive the reflected signal sent by the node under test;

[0072] The reflected signal is measured to obtain the second information corresponding to the node under test.

[0073] In the above embodiments, by determining the node to be tested for each sub-event and performing signal transmission, reception and measurement, orderly and targeted channel detection is achieved.

[0074] In conjunction with some embodiments of the first aspect, in some embodiments, the preset order is determined based on the first information.

[0075] In the above embodiments, the detection sequence can be determined based on the first information, so that the channel detection process can be adjusted according to the antenna configuration, thereby improving flexibility and adaptability.

[0076] In conjunction with some embodiments of the first aspect, in some embodiments, the second information includes at least one of the following: round-trip time (RTT) measurement; phase-based ranging (PBR) measurement.

[0077] In conjunction with some embodiments of the first aspect, in some embodiments, the method includes:

[0078] The second information corresponding to each node in the second device is sent to the first node.

[0079] In the above embodiments, the detection information of each node is sent back to the first node, and the information can be centrally processed by the first node, which can ensure the reliability of channel detection.

[0080] In conjunction with some embodiments of the first aspect, in some embodiments, the method includes:

[0081] Based on the second information corresponding to each node in the second device, third information is determined, and the third information is used to indicate the relative position of the first device and the second device;

[0082] The third information is sent to the first node.

[0083] In the above embodiments, the first device determines the third information to indicate the relative position of the first device and the second device, and sends this information to the first node, thus providing support for location services.

[0084] Secondly, embodiments of this disclosure propose a Bluetooth channel detection method, executed by a first node in a second device, the method comprising:

[0085] Establish an asynchronous connection-oriented logical transport ACL connection with the first device;

[0086] The ACL connection is used by the first device to probe each node in the second device, the second device including at least two nodes, and all nodes in the second device using the same Bluetooth device address.

[0087] In conjunction with some embodiments of the second aspect, in some embodiments, each node in the second device includes at least one antenna.

[0088] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0089] The device interacts with the first device to exchange first information, which is used to indicate the antenna configuration.

[0090] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes at least one of the following:

[0091] Antenna Configuration Index (ACI);

[0092] The number of antennas in the first device;

[0093] The total number of antennas at multiple nodes in the second device;

[0094] The number of nodes in the second device;

[0095] The number of antennas at each node of the second device;

[0096] Total number of antenna paths;

[0097] Antenna configuration type.

[0098] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0099] For any sub-event of Bluetooth channel detection, the node to be tested corresponding to the sub-event is determined according to a preset order;

[0100] The node under test is scheduled to receive the detection signal sent by the first device and send a reflected signal to the first device. The reflected signal is used by the first device to determine the second information corresponding to the node under test.

[0101] In conjunction with some embodiments of the second aspect, in some embodiments, the preset order is determined based on the first information.

[0102] In conjunction with some embodiments of the second aspect, in some embodiments, the second information includes at least one of the following: round-trip time (RTT) measurement; phase-based ranging (PBR) measurement.

[0103] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0104] Obtain the second information corresponding to each node in the second device;

[0105] The third information is determined based on the second information corresponding to each node in the second device, and the third information is used to indicate the relative position of the first device and the second device.

[0106] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0107] The third information sent by the first device is received, the third information being used to indicate the relative position of the first device and the second device.

[0108] Thirdly, embodiments of this disclosure provide a Bluetooth device, the Bluetooth device comprising:

[0109] The transceiver module is used to establish an asynchronous connection-oriented logical transmission ACL connection with the first node in the second device;

[0110] The transceiver module is also used to probe each node in the second device using the ACL connection;

[0111] The second device includes multiple nodes, and all nodes in the second device use the same Bluetooth device address.

[0112] Fourthly, embodiments of this disclosure provide a Bluetooth device, the Bluetooth device comprising:

[0113] The transceiver module is used to establish an asynchronous connection-oriented logical transmission ACL connection with the first device;

[0114] The ACL connection is used by the first device to probe each node in the second device, which includes multiple nodes, and all nodes in the second device use the same Bluetooth device address.

[0115] Fifthly, embodiments of this disclosure provide a Bluetooth device, comprising:

[0116] One or more processors;

[0117] A memory coupled to the one or more processors, the memory including executable instructions that, when executed by the one or more processors, cause the first device to perform the Bluetooth channel detection method described in the first aspect.

[0118] Sixthly, embodiments of this disclosure provide a Bluetooth device, comprising:

[0119] One or more processors;

[0120] A memory coupled to the one or more processors, the memory including executable instructions that, when executed by the one or more processors, cause the first device to perform the Bluetooth channel detection method described in the second aspect.

[0121] In a seventh aspect, embodiments of this disclosure provide a communication system including a first device and a second device, wherein the first device is configured to implement the Bluetooth channel detection method described in the first aspect, and a first node in the second device is configured to implement the Bluetooth channel detection method described in the second aspect.

[0122] Eighthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a Bluetooth device, cause the Bluetooth device to perform the Bluetooth channel detection method as described in the first or second aspect.

[0123] It is understood that the aforementioned first device, second device, first node, Bluetooth device, communication system, storage medium, program product, computer program, chip, or chip system are all used to perform the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0124] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0125] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0126] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0127] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0128] In the embodiments disclosed herein, "multiple" refers to two or more.

[0129] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0130] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0131] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0132] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0133] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0134] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0135] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0136] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0137] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0138] In some embodiments, "network" can be interpreted as devices included in the network (e.g., first device, second device, access network device, core network device, etc.).

[0139] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0140] In some embodiments, the terms "first device," "second device," "terminal," "terminal device," "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," and "client" can be used interchangeably.

[0141] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0142] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0143] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0144] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0145] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0146] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1A, the communication system 100 includes a first device 101 and a second device 102. In some embodiments, the second device 102 may include multiple nodes, such as a first node 1021, a second node 1022, ..., an Nth node 102N. Optionally, N may be less than or equal to 4, and the second device 102 may include 4 nodes, or the second device 102 may include only 2 nodes.

[0147] In some embodiments, the first node 1021 may be the master node in the second device 102, and the second node 1022 to the Nth node 102N may be child nodes in the second device 102. The first node 1021 may be a pre-configured master node, or it may be the node that first establishes an ACL connection with the first device 101.

[0148] In some embodiments, the first node 1021 to the Nth node 102N may all use the same Bluetooth device address.

[0149] In some embodiments, the first node 1021 to the Nth node 102N can be independent Bluetooth devices. When using the same Bluetooth device address, the first node 1021 to the Nth node 102N can be regarded as a single Bluetooth device, i.e., the second device 102.

[0150] In some embodiments, each node in the second device 102 includes at least one antenna.

[0151] In some embodiments, the second device 102 and the first device 101 can be any one of a terminal, an access network device, and a core network device. For example, the first device 101 can be a mobile terminal, and the second device 102 can be a Bluetooth terminal device in a vehicle.

[0152] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0153] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1A, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1A are illustrative. The communication system may include all or some of the main bodies in FIG1A, or it may include other main bodies outside of FIG1A. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0154] The embodiments disclosed herein can be applied to Bluetooth (a registered trademark), Starlight System, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra-Wideband (UWB), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., combinations of Bluetooth, Starlink, LTE, LTE-A, and 5G).

[0155] In digital car key applications, multiple anchor points can be installed in different parts of the vehicle. During Bluetooth channel detection, the mobile phone detects the propagation time and phase between itself and different anchor points on the vehicle, enabling accurate estimation of the distance and relative position between the phone and the vehicle. This allows the system to determine whether the user is near the vehicle or inside, allowing the vehicle to react accordingly. Furthermore, precise distance and position estimation ensures a higher level of information security for digital car key applications, protecting against attacks such as replay attacks and man-in-the-middle attacks.

[0156] In some embodiments, Bluetooth channel probing technology requires establishing an ACL connection between a pair (two) Bluetooth devices before performing channel probing, making it impossible to simultaneously perform channel probing between one-to-many (one Bluetooth node to multiple Bluetooth nodes) Bluetooth devices. For example, in a digital car key scenario, the mobile phone needs to complete channel probing with one Bluetooth node in the vehicle, then disconnect the ACL connection, and then re-establish a new ACL connection with another Bluetooth node in the vehicle and perform channel probing. In this way, the user's location may have changed significantly between the two connections, greatly impacting the application's real-time performance.

[0157] In a real-world scenario, as shown in Figure 1B, the vehicle terminal may include four Bluetooth nodes set on the vehicle, namely the first node 1021 to the fourth node 1024.

[0158] If the scheme in the above embodiments is adopted, the first device 101 (i.e., the mobile phone) needs to establish ACL connections with the first node 1021 to the fourth node 1024 respectively to perform channel probing on each node. This leads to problems such as inaccurate probing results and high probing process complexity.

[0159] In some embodiments, Bluetooth channel probing can be transformed into an ACL connection based on a logically linked pair of Initiator-Reflectors. For example, the Bluetooth device addresses of the first node 1021 to the fourth node 1024 are set to the same address, transforming it into a logically single device (i.e., the second device 102) as the Reflector. The first node 1021 can be configured as the master node, and the first device 101 can establish an ACL connection with the first node 1021 and reuse this ACL connection to enable communication between the first device 101 and other nodes, thereby enabling the first device 101 to perform channel probing on each node in the second device 102.

[0160] In this way, the first device 101 does not need to frequently establish, disconnect and switch ACL connections with multiple Bluetooth nodes in the second device 102, but can reuse a single ACL connection and use multi-antenna path configuration to achieve one-to-many Bluetooth channel detection.

[0161] Figure 2 is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 2, the present disclosure relates to a Bluetooth channel detection method, which includes:

[0162] Step S2101: The first device establishes an ACL connection with the first node.

[0163] In some embodiments, the first device may be referred to as the Bluetooth channel probing initiator, and the second device may be referred to as the Bluetooth channel probing reflector.

[0164] In some embodiments, the first node is a node in the second device. The second device includes at least two nodes, and all nodes in the second device use the same Bluetooth device address.

[0165] Alternatively, the node in the second device can be a standalone Bluetooth device.

[0166] In some embodiments, each node in the second device includes at least one antenna. For example, the second device may include four nodes, each node including one antenna, or the second device may include two nodes, each node including one or two antennas.

[0167] It's worth noting that when multiple independent Bluetooth devices use the same Bluetooth device address, these Bluetooth devices can be considered a logically single device, i.e., a second device. For example, these multiple Bluetooth devices can be viewed as different antennas of a second device.

[0168] For example, the second device may include four nodes (or Bluetooth devices), all of which communicate with the first device using the same Bluetooth device address. Each of the four nodes has an antenna, and these four nodes can be considered as the four antennas of the second device. Alternatively, the second device may include two nodes, both of which communicate with the first device using the same Bluetooth device address. Each of the two nodes has two antennas, and these four antennas of the two nodes can be considered as the four antennas of the second device.

[0169] In some embodiments, the first node can be any node in the second device, or it can be a specific node in the second device. For example, a node in the second device can be pre-configured as the first node, or the node in the second device that first establishes a connection with the first device can be used as the first node.

[0170] In some embodiments, the first node in the second device may be referred to as the master node, and the nodes other than the first node may be referred to as child nodes.

[0171] It is worth noting that after the first device establishes an ACL connection with the first node, since all nodes in the second device use the same Bluetooth device address, the first device can interact with each node in the second device using the parameters of the ACL connection, such as the connection interval, access address, and Bluetooth device address, to achieve ACL connection reuse.

[0172] In some embodiments, after the first device establishes an ACL connection with the first node, step S2102 is executed. Optionally, after the first device establishes an ACL connection with the first node, a Bluetooth channel detection process is initiated. Optionally, the Bluetooth channel detection process may include steps S2102 to S2108a, and / or one or more of steps S2102 to S2108b.

[0173] Step S2102: The first device interacts with the first node to exchange first information.

[0174] In some embodiments, the first device and the first node connect based on an ACL and exchange first information. Optionally, the first device and the first node connect based on an ACL and negotiate to obtain the first information.

[0175] In some embodiments, the first information is used to indicate the antenna configuration.

[0176] In some embodiments, the first information includes at least one of the following: Antenna Configuration Index (ACI); the number of antennas in the first device; the total number of antennas in multiple nodes of the second device; the number of nodes in the second device; the number of antennas in each node of the second device; the total number of antenna paths; and the antenna configuration type.

[0177] For example, the first device includes one antenna, and the second device includes two nodes, each node including two antennas. In this case, the first information can be used to indicate at least one of the following: ACI = 6; total number of antenna paths = 4; number of antennas in the first device = 1; number of nodes in the second device = 2; number of antennas per node in the second device = [2, 2]; antenna configuration type = 1:4.

[0178] It is understood that, since the number of antennas per node of the second device can implicitly indicate the number of nodes of the second device, the first information may not include the number of nodes of the second device in some embodiments.

[0179] Optionally, a node in the second device may by default include only one antenna. In this case, the first information may not include the number of antennas for each node in the second device, but may only include either the total number of antennas for multiple nodes in the second device or the number of nodes in the second device.

[0180] For example, the first device includes one antenna, and the second device includes four nodes, each node including one antenna. In this case, the first information can be used to indicate at least one of the following: ACI = 6; total number of antenna paths = 4; number of antennas in the first device = 1; number of antennas in the second device = 4; number of nodes in the second device = 4; antenna configuration type = 1:4.

[0181] It is understandable that, since the nodes in the second device may by default include only one antenna, and the number of nodes in the second device may implicitly indicate the number of antennas in the second device, in some embodiments the first information may include only one of the two.

[0182] In some embodiments, the first information is used by the first device to probe each node in the second device using an ACL connection. Optionally, the first device probes each node in the second device using an ACL connection based on the first information.

[0183] Optionally, the first device can determine the number of subevents or steps of Bluetooth channel probing based on the first information. Optionally, the first device can determine the signal or data packet corresponding to each subevent or step based on the first information.

[0184] It is understandable that each sub-event (or step) of Bluetooth channel probing corresponds to a different probing process. For example, different sub-events may correspond to different nodes under test or different measurement processes. For instance, sub-event 1 may correspond to the probing of node N1, sub-event 2 to the probing of node N2, or sub-event 3 to the RTT measurement process of node N1, and sub-event 4 to the PBR measurement process of node N1. The sub-events (or steps) of Bluetooth channel probing include the sub-events (or steps) corresponding to the first device probing each node in the second device.

[0185] In some embodiments, the first information is used by the first node to schedule the node under test to receive the probe signal sent by the first device and send the reflected signal to the first device.

[0186] Optionally, the first node can determine the sub-event (such as the sub-event index) corresponding to the current time based on the first information. Optionally, the first node can determine the node to be tested corresponding to the next sub-event based on the first information.

[0187] The process of the first device using an ACL connection to probe each node in the second device, and the first node scheduling the node under test to receive the probe signal sent by the first device and send a reflected signal to the first device, will be described in detail in steps S2103 to S2105, and will not be repeated here.

[0188] Step S2103: For any sub-event of Bluetooth channel detection, the first device and the first node respectively determine the node to be tested corresponding to the sub-event according to a preset order.

[0189] In some embodiments, the Bluetooth channel detection process may include multiple sub-events (or steps). The sub-events have been described in detail in step S2102 and will not be repeated here.

[0190] In some embodiments, the node to be tested can be any node in the second device. For example, when the node corresponding to a certain sub-event is the first node, the first node is the node to be tested. That is, the node to be tested can be the first node or any node other than the first node.

[0191] In some embodiments, the preset order may be a pre-agreed order (such as an agreement or a high-level device configuration), or the preset order may be an order determined by negotiation between the first device and the first node.

[0192] In some embodiments, the preset order may be determined based on first information. Optionally, the preset order may be used by the first device and the first node to determine the node (i.e., the node to be tested) corresponding to any sub-event.

[0193] In some embodiments, for any sub-event of Bluetooth channel detection, the first device and the first node further determine the antenna to be tested corresponding to the sub-event according to a preset order.

[0194] For example, the preset order can be based on the antenna index (or node index) of the second device in ascending order. For instance, the second device includes two nodes, each with two antennas. The indices of the two nodes in the second device can be N1 and N2, and the indices of the four antennas in the second device can be A1, A2, A3, and A4. For the first two sub-events of Bluetooth channel probing, the corresponding node to be tested can be N1; for the third and fourth sub-events, the corresponding node to be tested can be N2. The antenna to be tested for the first sub-event is A1, for the second sub-event it is A2, for the third sub-event it is A3, and for the fourth sub-event it is A4. Furthermore, for the first sub-event, the first device can send a probe signal to node N1, and the first node (such as node N2) can schedule node N1 to receive the corresponding probe signal through antenna A1, and so on.

[0195] In some embodiments, after the first node determines the node under test, it schedules the node under test to receive the probe signal sent by the first device and to send a corresponding reflected signal to the first device. Optionally, the first device sends a scheduling signal to the node under test, which instructs the node under test to receive the probe signal sent by the first device and to send a corresponding reflected signal to the first device.

[0196] In some embodiments, after the first device determines the node to be tested, it executes step S2104.

[0197] Step S2104: The first device sends a probe signal to the node under test.

[0198] In some embodiments, nodes in the second device other than the node under test do not expect to receive probe signals sent by the first device. Optionally, only the node under test in the second device expects to receive probe signals sent by the first device.

[0199] In some embodiments, the first device sends probe signals to the node under test based on an ACL connection. Optionally, the first device uses the ACL connection established in step S2101, for example, based on the connection interval, access address, Bluetooth device address, etc. of the ACL connection, to send probe signals to the node under test. That is, the first device can reuse the ACL connection established in step S2101 to communicate with each node in the second device.

[0200] In some embodiments, the probe signal is used to perform channel probing on the node under test. Optionally, the probe signal is used to instruct the node under test to send a corresponding reflected signal.

[0201] In some embodiments, the node under test receives a probe signal sent by the first device. Optionally, the node under test receives the probe signal sent by the first device in response to the scheduling of the first node. Optionally, after receiving the probe signal sent by the first device, the node under test executes step S2105.

[0202] Step S2105: The node under test sends a reflected signal to the first device.

[0203] In some embodiments, the node under test sends a probe signal to the first device based on an ACL connection. Optionally, the node under test uses the ACL connection established in step S2101, for example, based on the connection interval, access address, Bluetooth device address, etc. of the ACL connection, to send a reflected signal to the first device. That is, each node in the second device can use the ACL connection established in step S2101 to communicate with the first device. Optionally, each node in the second device reuses the ACL connection established in step S2101.

[0204] In some embodiments, the reflected signal is used for channel probing of the node under test. Optionally, the reflected signal is used by a first device to measure the channel.

[0205] In some embodiments, while sending a reflected signal to the first device, the node under test also sends a first indication message to the first node, wherein the first indication message is used to indicate that the current sub-event has been completed. Optionally, after receiving the first indication message sent by the node under test, the first node determines that the current sub-event has been completed, executes step S2103 to determine the node under test corresponding to the next sub-event, and schedules the node under test corresponding to the next sub-event to re-execute steps S2104 to S2105 until all sub-events have been completed, that is, the first device has completed the detection of each node in the second device.

[0206] In some embodiments, the first device receives a reflected signal sent by the node under test. Optionally, after receiving the reflected signal sent by the node under test, the first device executes step S2106.

[0207] Step S2106: The first device measures the reflected signal to obtain the second information corresponding to the node under test.

[0208] In some embodiments, the second information includes at least one of the following: RTT measurement; PBR measurement.

[0209] In some embodiments, steps S2104 to S2106 may be the execution process of a sub-event.

[0210] In some embodiments, after receiving the second information sent by the node under test, the first device sends the second information or the first indication information to the first node, wherein the first indication information is used to indicate that the current sub-event has been completed. Optionally, after receiving the second information or the first indication information corresponding to the node under test, the first node determines that the current sub-event has been completed, executes step S2103 to determine the node under test corresponding to the next sub-event, and schedules the node under test corresponding to the next sub-event to re-execute steps S2104 to S2105 until all sub-events have been completed, that is, the first device has completed the detection of each node in the second device.

[0211] In some embodiments, the second information may be referred to as "node measurement result", "measurement information", etc., and the name is not limited in this disclosure.

[0212] In some embodiments, after the first device obtains the second information corresponding to the node to be tested, it returns to step S2103 to determine the node to be tested corresponding to the next sub-event, and re-executes steps S2104 to S2106 until all sub-events are completed, that is, the first device has completed the detection of each node in the second device.

[0213] In some embodiments, after the first device has completed detecting each node in the second device, it executes steps S2107a and S2108a, or executes steps S2107b and S2108b.

[0214] In step S2107a, the first device determines the third information based on the second information corresponding to each node in the second device.

[0215] In some embodiments, the first device determines third information based on the RTT measurement and / or PBR measurement corresponding to each node in the second device.

[0216] In some embodiments, the third information is used to indicate the relative position of the first device and the second device. Optionally, the third information is used to indicate the relative position of each node in the first device and the second device. Optionally, the third information is used to indicate the distance between each node in the first device and the second device. Optionally, the third information is used to indicate the distance and orientation between the first device and the second device. Optionally, the third information is used to indicate the distance and orientation between the center positions of multiple nodes in the first device and the second device. Optionally, the third information is used to indicate the distance and orientation between the first device and the first node.

[0217] In some embodiments, the third information may be referred to as "location information", "relative location information", etc., and the name is not limited in this disclosure.

[0218] For example, the second device includes four nodes set on the vehicle, and the third information can be used to indicate the relative position of the first device to the vehicle, such as whether the first device is inside the vehicle, or whether the first device is on the left or right side of the vehicle, or the closest distance between the first device and the vehicle, etc.

[0219] Step S2108a: The first device sends third information to the first node.

[0220] In some embodiments, the first device sends third information to the first node via an ACL connection.

[0221] In some embodiments, the first node receives third information sent by the first device. Optionally, the first node performs a corresponding action based on the third information. For example, if the first node is a Bluetooth device in a vehicle, and the first node determines that the first device is less than 1 meter away from the vehicle based on the third information, it unlocks the vehicle door.

[0222] In step S2107b, the first device sends the second information corresponding to each node in the second device to the first node.

[0223] In some embodiments, the first device sends second information corresponding to each node in the second device to the first node via an ACL connection.

[0224] In some embodiments, step S2107b is optional. For example, the first device may send the second information corresponding to any one node under test to the first node after determining the second information; or, the node under test may send the received second information to the first node after receiving the second information determined by the first device. In this case, the first device does not need to send the second information corresponding to each node to the first node.

[0225] In some embodiments, after the first node obtains the second information corresponding to each node in the second device, it executes step S2108b.

[0226] In step S2108b, the first node determines the third information based on the second information corresponding to each node in the second device.

[0227] In some embodiments, after determining the third information, the first node performs a corresponding action based on the third information. For example, if the first node is a Bluetooth device in the vehicle, and the first node determines that the first device is less than 1 meter away from the vehicle based on the third information, it unlocks the vehicle door.

[0228] In some embodiments, steps S2107a and S2108a are performed selectively, along with steps S2107b and S2108b. That is, the third information can be determined by the first device or by the first node.

[0229] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0230] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0231] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) status", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", and "panel" can be used interchangeably.

[0232] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0233] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0234] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0235] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0236] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.

[0237] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S2101 to S2108a or steps S2101 to S2108b. For example, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, step S2104 may be implemented as an independent embodiment, step S2101+step S2102+step S2103+step S2104 may be implemented as an independent embodiment, steps S2103 to S2106 may be implemented as independent embodiments, step S2107a+step S2108a may be implemented as an independent embodiment, and step S2107b+step S2108b may be implemented as an independent embodiment, but is not limited thereto.

[0238] In some embodiments, steps S2102 to S2108a are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0239] In some embodiments, steps S2102 to S2108b are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0240] In some embodiments, steps S2101 to S2102 and steps S2104 to S2108a or S2108b are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0241] In some embodiments, steps S2101 to S2107b are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0242] In some embodiments, other optional implementations described before or after the specification corresponding to FIG2 may be referred to.

[0243] Figure 3A is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 3A, the present disclosure relates to a Bluetooth channel detection method (first device side), which includes:

[0244] Step S3101: Establish an ACL connection with the first node.

[0245] The optional implementation of step S3101 can be found in the optional implementation of step S2101 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0246] Step S3102: Interact with the first node to exchange first information.

[0247] The optional implementation of step S3102 can be found in the optional implementation of step S2102 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0248] Step S3103: For any sub-event of Bluetooth channel detection, determine the node to be tested corresponding to the sub-event according to a preset order.

[0249] The optional implementation of step S3103 can be found in the optional implementation of step S2103 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0250] Step S3104: Send a detection signal.

[0251] The optional implementation of step S3104 can be found in the optional implementation of step S2104 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0252] In some embodiments, the first device sends a probe signal to the node under test, but is not limited thereto; it may also send a probe signal to other entities.

[0253] Step S3105: Obtain the reflected signal.

[0254] The optional implementation of step S3105 can be found in the optional implementation of step S2105 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0255] In some embodiments, the first device receives a reflected signal sent by the first node, but is not limited thereto; it may also receive reflected signals sent by other entities.

[0256] Step S3106: Measure the reflected signal to obtain the second information.

[0257] The optional implementation of step S3106 can be found in the optional implementation of step S2106 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0258] Step S3107: Determine the third information based on the second information corresponding to each node in the second device.

[0259] The optional implementation of step S3107 can be found in the optional implementation of step S2107a in Figure 2, and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0260] Step S3108: Send the third message.

[0261] The optional implementation of step S3108 can be found in the optional implementation of step S2108a in Figure 2, and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0262] In some embodiments, the first device sends third information to the first node, but is not limited thereto; it may also send third information to other entities.

[0263] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S3101 to S3108. For example, step S3102 may be implemented as an independent embodiment, step S3103 may be implemented as an independent embodiment, step S3104 may be implemented as an independent embodiment, steps S3101 to S3104 may be implemented as independent embodiments, steps S3103 to S3106 may be implemented as independent embodiments, and steps S3107 and S3108 may be implemented as independent embodiments, but are not limited thereto.

[0264] In some embodiments, steps S3102 to S3108 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0265] In some embodiments, steps S3101 to S3102 and steps S3104 to S3108 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0266] In some embodiments, steps S3101 to S3107 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0267] Figure 3B is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 3B, the present disclosure relates to a Bluetooth channel detection method (first device side), the method including:

[0268] Step S3201: Establish an ACL connection with the first node.

[0269] The optional implementation of step S3201 can be found in the optional implementation of step S2101 in Figure 2 and step S3101 in Figure 3A, as well as other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0270] Step S3202: For any sub-event of Bluetooth channel detection, determine the node to be tested corresponding to the sub-event according to a preset order.

[0271] The optional implementation of step S3202 can be found in step S2103 of Figure 2, the optional implementation of step S3103 of Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0272] Step S3203: Send a detection signal.

[0273] The optional implementation of step S3203 can be found in the optional implementation of step S2104 in Figure 2 and step S3104 in Figure 3A, as well as other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0274] Step S3204: Obtain the reflected signal.

[0275] The optional implementation of step S3204 can be found in the optional implementation of step S2105 in Figure 2, step S3105 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0276] Step S3205: Measure the reflected signal to obtain the second information.

[0277] The optional implementation of step S3205 can be found in the optional implementation of step S2106 in Figure 2, step S3106 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0278] Step S3206: Send the second information corresponding to each node in the second device.

[0279] The optional implementation of step S3206 can be found in the optional implementation of step S2107a in Figure 2, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0280] In some embodiments, the first device sends second information corresponding to each node in the second device to the first node, but is not limited thereto, and may also send the second information corresponding to each node in the second device to other entities.

[0281] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S3201 to S3206. For example, step S3202 may be implemented as a standalone embodiment, step S3203 may be implemented as a standalone embodiment, steps S3201 to S3203 may be implemented as standalone embodiments, steps S3202 to S3205 may be implemented as standalone embodiments, and step S3206 may be implemented as a standalone embodiment, but is not limited thereto.

[0282] In some embodiments, steps S3202 to S3206 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0283] In some embodiments, steps S3201 and S3203 to S3206 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0284] In some embodiments, steps S3201 to S3205 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0285] In some embodiments, one or more of steps S3201 to S3206 may be combined with step S3102 in FIG3A.

[0286] In some embodiments, step S3206 may be combined with one or more of steps S3101 to S3106 in FIG3A.

[0287] Figure 3C is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 3C, the embodiments of the present disclosure relate to a Bluetooth channel detection method (first device side), the method including:

[0288] Step S3301: Establish an ACL connection with the first node.

[0289] The optional implementation of step S3301 can be found in the optional implementation of step S2101 in Figure 2, step S3101 in Figure 3A, step S3201 in Figure 3B, and other related parts in the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0290] Step S3302: Interact with the first node to exchange first information.

[0291] The optional implementation of step S3302 can be found in step S2102 of Figure 2, the optional implementation of step S3102 of Figure 3A, and other related parts in the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0292] Step S3303: Based on the first information, use ACL connection to probe each node in the second device respectively.

[0293] The optional implementations of step S3303 can be found in steps S2103 to S2106 in Figure 2, steps S3103 to S3106 in Figure 3A, steps S3202 to S3205 in Figure 3B, and other related parts in the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0294] In some embodiments, the first device can use the ACL connection established in step S3301 to communicate with each node in the second device to achieve channel detection. Optionally, the first device and each node in the second device can use the relevant parameters of the ACL connection established in step S3301 to achieve signal or data packet interaction, for example, using the ACL connection to send probe signals to each node in the second device.

[0295] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S3301 to S3303. For example, step S3301 may be implemented as a standalone embodiment, step S3302 may be implemented as a standalone embodiment, step S3303 may be implemented as a standalone embodiment, and steps S3301 and S3303 may be implemented as standalone embodiments, but are not limited thereto.

[0296] In some embodiments, steps S3302 to S3303 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0297] In some embodiments, steps S3301 to S3302 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0298] In some embodiments, steps S3301 and S3303 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0299] Figure 3D is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 3D, the embodiments of the present disclosure relate to a Bluetooth channel detection method (first device side), the method including:

[0300] Step S3401: Establish an ACL connection with the first node.

[0301] The optional implementations of step S3301 can be found in step S2101 of Figure 2, step S3101 of Figure 3A, step S3201 of Figure 3B, and step S3301 of Figure 3C, as well as other related parts in the embodiments involved in Figures 2, 3A, 3B, and 3C, which will not be repeated here.

[0302] Step S3402: Use ACL connection to probe each node in the second device.

[0303] The optional implementation of step S3402 can be found in steps S2103 to S2106 in Figure 2, steps S3103 to S3106 in Figure 3A, steps S3202 to S3205 in Figure 3B, optional implementation of step S3303 in Figure 3C, and other related parts in the embodiments involved in Figures 2, 3A, 3B, and 3C, which will not be repeated here.

[0304] In some embodiments, the first device can use the ACL connection established in step S3401 to communicate with each node in the second device to achieve channel detection. Optionally, the first device and each node in the second device can use the relevant parameters of the ACL connection established in step S3401 to achieve signal or data packet interaction, for example, using the ACL connection to send probe signals to each node in the second device.

[0305] In some embodiments, the second device includes at least two nodes, and all nodes in the second device use the same Bluetooth device address.

[0306] In some embodiments, each node in the second device includes at least one antenna.

[0307] In some embodiments, ACL connections are used to probe each node in the second device, including:

[0308] Interact with the first node to exchange first information, which is used to indicate the antenna configuration;

[0309] Based on the first information, ACL connections are used to probe each node in the second device.

[0310] In some embodiments, the first information includes at least one of the following:

[0311] Antenna Configuration Index (ACI);

[0312] The number of antennas in the first device;

[0313] The total number of antennas at multiple nodes in the second device;

[0314] The number of nodes in the second device;

[0315] The number of antennas at each node of the second device;

[0316] Total number of antenna paths;

[0317] Antenna configuration type.

[0318] In some embodiments, ACL connections are used to probe each node in the second device, including:

[0319] For any sub-event of Bluetooth channel probing, the node to be tested corresponding to the sub-event is determined according to a preset order;

[0320] Send a probe signal to the node under test;

[0321] Receive the reflected signal sent by the node under test;

[0322] The reflected signal is measured to obtain the second information corresponding to the node under test.

[0323] In some embodiments, the preset order is determined based on first information.

[0324] In some embodiments, the second information includes at least one of the following: round-trip time (RTT) measurement; phase-based ranging (PBR) measurement.

[0325] In some embodiments, the method includes:

[0326] Send the second information corresponding to each node in the second device to the first node.

[0327] In some embodiments, the method includes:

[0328] Based on the second information corresponding to each node in the second device, the third information is determined, and the third information is used to indicate the relative position of the first device and the second device.

[0329] Send the third message to the first node.

[0330] Figure 4A is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 4A, the present disclosure relates to a Bluetooth channel detection method (first node side), which includes:

[0331] Step S4101: Establish an ACL connection with the first device.

[0332] The optional implementation of step S4101 can be found in the optional implementation of step S2101 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0333] Step S4102: Interact with the first device to exchange first information.

[0334] The optional implementation of step S4102 can be found in the optional implementation of step S2102 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0335] Step S4103: For any sub-event of Bluetooth channel detection, determine the node to be tested corresponding to the sub-event according to a preset order.

[0336] The optional implementation of step S4103 can be found in the optional implementation of step S2103 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0337] Step S4104: Schedule the node under test to receive the detection signal sent by the first device and send the reflected signal to the first device.

[0338] The optional implementation of step S4104 can be found in the optional implementation of steps S2104 to S2105 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0339] Step S4105: Obtain the second information corresponding to each node in the second device.

[0340] The optional implementation of step S4105 can be found in the optional implementation of step S2107b in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0341] Step S4106: Determine the third information based on the second information corresponding to each node in the second device.

[0342] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S4101 to S4106. For example, step S4101 may be implemented as a standalone embodiment, step S4102 may be implemented as a standalone embodiment, step S4103 may be implemented as a standalone embodiment, steps S4103 to S4104 may be implemented as standalone embodiments, and steps S4105 and S4106 may be implemented as standalone embodiments, but are not limited thereto.

[0343] In some embodiments, steps S4102 to S4106 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0344] In some embodiments, steps S4101 to S4103 and steps S4105 to S4106 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0345] In some embodiments, steps S4101 to S4105 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0346] Figure 4B is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 4B, the present disclosure relates to a Bluetooth channel detection method (first node side), which includes:

[0347] Step S4201: Establish an ACL connection with the first device.

[0348] The optional implementation of step S4201 can be found in the optional implementation of step S2101 in Figure 2, step S4101 in Figure 4A, and other related parts in the embodiments involved in Figures 2 and 4A, which will not be repeated here.

[0349] Step S4202: For any sub-event of Bluetooth channel detection, determine the node to be tested corresponding to the sub-event according to a preset order.

[0350] The optional implementation of step S4102 can be found in step S2103 of Figure 2, the optional implementation of step S4103 of Figure 4A, and other related parts in the embodiments involved in Figures 2 and 4A, which will not be repeated here.

[0351] Step S4203: Schedule the node under test to receive the detection signal sent by the first device and send the reflected signal to the first device.

[0352] The optional implementation of step S4203 can be found in steps S2104 to S2105 in Figure 2, the optional implementation of step S4104 in Figure 4A, and other related parts in the embodiments involved in Figures 2 and 4A, which will not be repeated here.

[0353] Step S4204: Obtain third information.

[0354] The optional implementation of step S4204 can be found in the optional implementation of step S2108b in Figure 2, and other related parts in the embodiments involved in Figures 2 and 4A, which will not be repeated here.

[0355] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S4201 to S4204. For example, step S4201 may be implemented as a standalone embodiment, step S4202 may be implemented as a standalone embodiment, step S4203 may be implemented as a standalone embodiment, and steps S4203 to S4204 may be implemented as standalone embodiments, but are not limited thereto.

[0356] In some embodiments, steps S4202 to S4204 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0357] In some embodiments, steps S4201 to S4203 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0358] Figure 4C is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 4C, the present disclosure relates to a Bluetooth channel detection method (first node side), which includes:

[0359] Step S4301: Establish an ACL connection with the first device.

[0360] The optional implementation of step S4301 can be found in the optional implementation of step S2101 in Figure 2, step S4101 in Figure 4A, step S4201 in Figure 4B, and other related parts in the embodiments involved in Figures 2, 4A, and 4B, which will not be repeated here.

[0361] Step S4302: Interact with the first device to exchange first information.

[0362] The optional implementation of step S4302 can be found in step S2102 of Figure 2, the optional implementation of step S4102 of Figure 4A, and other related parts in the embodiments involved in Figures 2, 4A, and 4B, which will not be repeated here.

[0363] The Bluetooth channel detection method disclosed in this embodiment may include at least one of steps S4301 to S4302. For example, step S4201 may be implemented as a separate embodiment, and step S4202 may be implemented as a separate embodiment.

[0364] In some embodiments, step S4302 may be combined with one or more of steps S4201 to S4204 in FIG2B.

[0365] Figure 4D is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 4D, the present disclosure relates to a Bluetooth channel detection method (first node side), which includes:

[0366] Step S4401: Establish an ACL connection with the first device.

[0367] The optional implementations of step S4401 can be found in the optional implementations of step S2101 in Figure 2, step S4101 in Figure 4A, step S4201 in Figure 4B, and step S4301 in Figure 4C, as well as other related parts in the embodiments involved in Figures 2, 4A, 4B, and 4C, which will not be repeated here.

[0368] In some embodiments, the ACL connection is used by the first device to probe each node in the second device, the second device including at least two nodes, all of which use the same Bluetooth device address.

[0369] In some embodiments, each node in the second device includes at least one antenna.

[0370] In some embodiments, the method includes:

[0371] The device interacts with a first device to exchange first information, which is used to indicate the antenna configuration.

[0372] In some embodiments, the first information includes at least one of the following:

[0373] Antenna Configuration Index (ACI);

[0374] The number of antennas in the first device;

[0375] The total number of antennas at multiple nodes in the second device;

[0376] The number of nodes in the second device;

[0377] The number of antennas at each node of the second device;

[0378] Total number of antenna paths;

[0379] Antenna configuration type.

[0380] In some embodiments, the method includes:

[0381] For any sub-event of Bluetooth channel probing, the node to be tested corresponding to the sub-event is determined according to a preset order;

[0382] The node under test is scheduled to receive the probe signal sent by the first device and send a reflected signal to the first device. The reflected signal is used by the first device to determine the second information corresponding to the node under test.

[0383] In some embodiments, the preset order is determined based on first information.

[0384] In some embodiments, the second information includes at least one of the following: round-trip time (RTT) measurement; phase-based ranging (PBR) measurement.

[0385] In some embodiments, the method includes:

[0386] Obtain the second information corresponding to each node in the second device;

[0387] The third information is determined based on the second information corresponding to each node in the second device. The third information is used to indicate the relative position of the first device and the second device.

[0388] In some embodiments, the method includes:

[0389] Receive third information sent by the first device, the third information being used to indicate the relative position of the first device and the second device.

[0390] Figure 5 is an interactive schematic diagram of a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 5, the present disclosure relates to a Bluetooth channel detection method, which includes:

[0391] Step S5101: The first device establishes an ACL connection with the first node in the second device.

[0392] The optional implementations of step S5101 can be found in the optional implementations of step S2101 in Figure 2, step S3101 in Figure 3A, step S3201 in Figure 3B, step S3301 in Figure 3C, step S3401 in Figure 3D, step S4101 in Figure 4A, step S4201 in Figure 4B, step S4301 in Figure 4C, step S4401 in Figure 4D, and other related parts in the embodiments involved in Figures 2, 3A, 3B, 3C, 3D, 4A, 4B, 4C, and 4D, which will not be repeated here.

[0393] In step S5102, the first device uses an ACL connection to probe each node in the second device.

[0394] Optional implementations of step S5102 can be found in steps S2102 to S2106 in Figure 2, steps S3102 to S3206 in Figure 3A, steps S3202 to S3205 in Figure 3B, steps S3302 to S3303 in Figure 3C, step S3402 in Figure 3D, steps S4102 to S4105 in Figure 4A, steps S4202 to S4203 in Figure 4B, step S4302 in Figure 4C, and other related parts in the embodiments involved in Figures 2, 3A, 3B, 3C, 3D, 4A, 4B, 4C, and 4D, which will not be repeated here.

[0395] Figure 6A is a flowchart illustrating a Bluetooth channel detection method according to an embodiment of the present disclosure. As shown in Figure 6A, the present disclosure relates to a Bluetooth channel detection method, which includes:

[0396] Step S6101: The initiator and the master node of the reflector establish an ACL connection.

[0397] In some embodiments, after the initiating end and the master node of the reflecting end establish an ACL connection, the channel sounding procedure is entered and step S6102 is executed.

[0398] In step S6102, the Initiator negotiates the antenna configuration with the Reflector.

[0399] For example, configure the total number of antenna paths (Antenna Path) to 4 and the antenna configuration index (ACI) to 6.

[0400] In some embodiments, the Initiator and Reflector can negotiate to obtain the first information described in the above embodiments. For example, they can negotiate the channel sounding parameters, such as a ratio of 1:4.

[0401] In step S6103, for each subevent, the Reflector notifies the corresponding master node and sub-node to enter the channel probing measurement process in a preset order.

[0402] For example, the preset order is based on the antenna index and / or node index in ascending order. For instance, if Reflector has 4 nodes, namely 1, 2, 3, and 4, then notifications can be sent in the order of 1-4.

[0403] In some embodiments, the master node in the Reflector can send scheduling instructions to the corresponding child nodes so that the corresponding child nodes can enter the channel measurement process, for example, expecting to receive the probe signal sent by the Initiator.

[0404] Step S6104: Perform a step measurement of channel sounding between the master and child nodes of the Initiator and Reflector.

[0405] In some embodiments, one or more of RTT measurements and PBR measurements may be included.

[0406] In some embodiments, the Initiator can send the probe signal involved in the above embodiments to the corresponding node in the Reflector through an ACL connection, and receive the reflection signal sent by the Reflector in response to the probe signal to realize the above steps.

[0407] In step S6105, Reflector estimates the distance and orientation of the Initiator based on the measurement results of multiple master nodes and child nodes.

[0408] In some embodiments, steps S6101 to S6105 can be performed based on a one-to-many topology for Bluetooth channel probing as shown in FIG6B. As shown in FIG6B, in a one-to-many topology, Bluetooth channel probing can be transformed into an ACL connection based on a pair of "logically" Initiator-Reflector nodes, wherein the Reflector may include four Bluetooth nodes, namely N1, N2, N3 and N4, wherein N1 is the master node.

[0409] It is understood that the Reflector is not limited to including 4 Bluetooth nodes, but may include more or fewer Bluetooth nodes, and this disclosure does not limit this.

[0410] Figure 6C illustrates a Bluetooth channel sounding process according to an embodiment of the present disclosure. This Bluetooth channel sounding process can be implemented based on the one-to-many topology in Figure 6B above. As shown in Figure 6C, a channel sounding event can include multiple sub-events from Subevent0 to SubeventN-1. During the execution of Subevent0 to SubeventN-1, the Initiator interacts with nodes N1 to N4 respectively using data packets or signals to complete the channel sounding event. In other words, after entering the Bluetooth channel detection process, the sub-nodes (N2 to N4) can reuse the ACL connection parameters (such as connection interval, access address, Bluetooth device address, etc.) established between the master node (N1) and the initiator to maintain the ACL connection with the initiator. Furthermore, under the coordination of the master node, they can switch to different sub-nodes between different sub-events (for example, they can switch in 24 different sequences such as N1, N2, N3, N4 or N4, N3, N2, N1, etc.) to perform the Bluetooth channel detection steps. That is, the initiator and the reflector transmit corresponding data packets according to different modes.

[0411] Through the above embodiments, in the one-to-many topology commonly seen in digital car key scenarios, one-to-many Bluetooth channel detection can be achieved through multi-antenna configuration and multiplexed ACL connections. This eliminates the need for frequent establishment, disconnection, and switching of ACL connections between a single Bluetooth node on the mobile device and multiple Bluetooth nodes on the vehicle, significantly improving the real-time performance of the application and the user experience.

[0412] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0413] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, a first device, a second device, a network device, etc.) in any of the above methods.

[0414] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0415] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0416] Figure 7A is a schematic diagram of the structure of a Bluetooth device according to an embodiment of this disclosure. As shown in Figure 7A, the Bluetooth device 7100 may include at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the transceiver module 7101 is used to establish an asynchronous connection-oriented logical transport ACL connection with a first node in the second device; the transceiver module 7101 is also used to multiplex the ACL connection to probe each node in the second device respectively; wherein, the second device includes multiple nodes, and all nodes in the second device use the same Bluetooth device address. Optionally, the transceiver module 7101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first device in any of the above methods, which will not be described in detail here. Optionally, the processing module 7102 is used to perform at least one of the other steps performed by the first device in any of the above methods, which will not be described in detail here.

[0417] Figure 7B is a schematic diagram of the structure of a Bluetooth device according to an embodiment of this disclosure. As shown in Figure 7B, the Bluetooth device 7200 may include at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module 7201 is used to establish an asynchronous connection-oriented logical transport ACL connection with a first device; wherein, the ACL connection is used by the first device to probe each node in the second device, the second device including multiple nodes, and all nodes in the second device using the same Bluetooth device address. Optionally, the transceiver module 7201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first node in any of the above methods, which will not be described in detail here. Optionally, the processing module 7202 is used to perform at least one of the other steps performed by the first node in any of the above methods, which will not be described in detail here.

[0418] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0419] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0420] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure. The communication device 8100 may be a Bluetooth device (e.g., a first device, a second device, a first node, etc.), or a chip, chip system, or processor that supports Bluetooth devices in implementing any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments, and for details, please refer to the description in the above method embodiments.

[0421] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, Bluetooth devices, Bluetooth chips, etc.), execute programs, and process program data. Optionally, the communication device 8100 can be used to execute any of the above methods. Optionally, one or more processors 8101 can be used to invoke instructions to cause the communication device 8100 to execute any of the above methods.

[0422] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8101 performs at least one of the other steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0423] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Optionally, all or part of the memories 8103 may be located outside the communication device 8100. In an optional embodiment, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memories 8103 and can be used to receive data from the memories 8103 or other devices, and to send data to the memories 8103 or other devices. For example, the interface circuits 8104 can read data stored in the memories 8103 and send that data to the processor 8101.

[0424] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0425] Figure 8B is a schematic diagram of the structure of chip 8200 according to an embodiment of this disclosure. For cases where the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of chip 8200 shown in Figure 8B, but it is not limited thereto.

[0426] Chip 8200 includes one or more processors 8201. Chip 8200 is used to perform any of the above methods.

[0427] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Optionally, all or part of the memories 8203 may be located outside of chip 8200. Optionally, interface circuit 8202 is connected to memory 8203, and interface circuit 8202 can be used to receive data from memory 8203 or other devices, and interface circuit 8202 can be used to send data to memory 8203 or other devices. For example, interface circuit 8202 can read data stored in memory 8203 and send the data to processor 8201.

[0428] In some embodiments, the interface circuit 8202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 8202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203, or the transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps.

[0429] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0430] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0431] This disclosure also provides a program product that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0432] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A Bluetooth channel sounding method, characterized by, Performed by a first device, the method includes: Establish an asynchronous connection-oriented logical transport ACL connection with the first node in the second device; Use the ACL connection to probe each node in the second device; The second device includes at least two nodes, and all nodes in the second device use the same Bluetooth device address.

2. The method of claim 1, wherein, Each node in the second device includes at least one antenna.

3. The method according to claim 1 or 2, characterized in that, The step of using the ACL connection to probe each node in the second device includes: Interact with the first node to exchange first information, which is used to indicate antenna configuration; Based on the first information, the ACL connection is used to probe each node in the second device.

4. The method of claim 3, wherein, The first information includes at least one of the following: Antenna Configuration Index (ACI); The number of antennas in the first device; The total number of antennas at multiple nodes in the second device; The number of nodes in the second device; The number of antennas at each node of the second device; Total number of antenna paths; Antenna configuration type.

5. The method according to any one of claims 1 to 4, characterized in that, The step of using the ACL connection to probe each node in the second device includes: For any sub-event of Bluetooth channel detection, the node to be tested corresponding to the sub-event is determined according to a preset order; Send a probe signal to the node under test; Receive the reflected signal sent by the node under test; The reflected signal is measured to obtain the second information corresponding to the node under test.

6. The method of claim 5, wherein, The preset order is determined based on the first information.

7. The method according to claim 5 or 6, characterized in that, The second information includes at least one of the following: round-trip time (RTT) measurement; phase-based distance measurement (PBR).

8. The method according to any one of claims 5-7, characterized in that, The method includes: The second information corresponding to each node in the second device is sent to the first node.

9. The method according to any one of claims 5-8, characterized in that, The method includes: Based on the second information corresponding to each node in the second device, third information is determined, and the third information is used to indicate the relative position of the first device and the second device; The third information is sent to the first node.

10. A Bluetooth channel sounding method, characterized by, The method, executed by the first node in the second device, includes: Establish an asynchronous connection-oriented logical transport ACL connection with the first device; The ACL connection is used by the first device to probe each node in the second device, the second device including at least two nodes, and all nodes in the second device using the same Bluetooth device address.

11. The method according to claim 10, characterized in that, Each node in the second device includes at least one antenna.

12. The method according to claim 10 or 11, characterized in that, The method includes: The device interacts with the first device to exchange first information, which is used to indicate the antenna configuration.

13. The method according to claim 12, characterized in that, The first information includes at least one of the following: Antenna Configuration Index (ACI); The number of antennas in the first device; The total number of antennas at multiple nodes in the second device; The number of nodes in the second device; The number of antennas at each node of the second device; Total number of antenna paths; Antenna configuration type.

14. The method according to any one of claims 11-13, characterized in that, The method includes: For any sub-event of Bluetooth channel detection, the node to be tested corresponding to the sub-event is determined according to a preset order; The node under test is scheduled to receive the detection signal sent by the first device and send a reflected signal to the first device. The reflected signal is used by the first device to determine the second information corresponding to the node under test.

15. The method according to claim 14, characterized in that, The preset order is determined based on the first information.

16. The method according to claim 14 or 15, characterized in that, The second information includes at least one of the following: round-trip time (RTT) measurement; phase-based distance measurement (PBR).

17. The method according to any one of claims 14-16, characterized in that, The method includes: Obtain the second information corresponding to each node in the second device; The third information is determined based on the second information corresponding to each node in the second device, and the third information is used to indicate the relative position of the first device and the second device.

18. The method according to any one of claims 14-16, characterized in that, The method includes: The third information sent by the first device is received, the third information being used to indicate the relative position of the first device and the second device.

19. A Bluetooth device, characterized in that, The Bluetooth device includes: The transceiver module is used to establish an asynchronous connection-oriented logical transmission ACL connection with the first node in the second device; The transceiver module is also used to probe each node in the second device using the ACL connection; The second device includes multiple nodes, and all nodes in the second device use the same Bluetooth device address.

20. A Bluetooth device, characterized in that, The Bluetooth device includes: The transceiver module is used to establish an asynchronous connection-oriented logical transmission ACL connection with the first device; The ACL connection is used by the first device to probe each node in the second device, which includes multiple nodes, and all nodes in the second device use the same Bluetooth device address.

21. A Bluetooth device, characterized in that, include: One or more processors; A memory coupled to the one or more processors, the memory including executable instructions that, when executed by the one or more processors, cause the first device to perform the Bluetooth channel detection method according to any one of claims 1-9.

22. A Bluetooth device, characterized in that, include: One or more processors; A memory coupled to the one or more processors, the memory including executable instructions that, when executed by the one or more processors, cause the first device to perform the Bluetooth channel detection method according to any one of claims 10-18.

23. A communication system, characterized in that, The device includes a first device and a second device, wherein the first device is configured to implement the Bluetooth channel detection method according to any one of claims 1-9, and the first node in the second device is configured to implement the Bluetooth channel detection method according to any one of claims 10-18.

24. A storage medium storing instructions, characterized in that, When the instruction is executed on a Bluetooth device, the Bluetooth device performs the Bluetooth channel detection method as described in any one of claims 1-9 or 10-18.

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