Sharing system and method of slave machine capable of performing wireless communication connection with master machine

Abstract

The system of the present invention comprises: a master; the son machine can be in wireless communication connection with the mother machine; and a base station (BS) that registers a sharing state of the slave devices, the BS measuring a slave device position and a master device position comprising relative positions of the slave devices and the master device in a BS management area, and updating the state of the slave devices in the device list stored in the BS to a storage state when it is determined that the slave devices are located in the BS management area on the basis of the slave device positions. When it is determined that the master device is brought out together with the slave device on the basis of the slave device position and the master device position, a slave device connection request signal is transmitted to the master device, the state of the slave device in the device list is updated to a brought-out state, the connection target of the slave device is updated to the master device, and the master device is communicatively connected to the slave device, and when it is determined that the slave device has returned to the BS management area, the slave device is connected to the slave device. A slave connection release request signal requesting to release communication with the slave is transmitted to the master, the state of the slave in the device list is changed to a storage state, and the master is deleted from the connection destination of the slave.

Description

Technical Field

[0001] The present invention relates to a sharing system and method of a slave unit capable of wirelessly connecting to a master unit. Background Art

[0002] As a measure to prevent valuables from being forgotten or stolen, there are anti-loss tags (hereinafter referred to as tags) with built-in communication functions such as near-field wireless communication. By registering the tag with a mobile device such as a smartphone and wirelessly connecting it, the mobile device can determine the tag's location and notify the mobile device if it moves beyond a specified distance. Attaching these tags to keys, wallets, and other items allows immediate retrieval of the location.

[0003] In some cases, multiple people can share one tag. For a shareable tag, if the user allows tag sharing and registers it with other portable terminals, any portable terminal can wirelessly connect to it, allowing multiple portable terminals to use the same tag.

[0004] As a technology regarding such a shareable tag, Patent Document 1 discloses an authentication method, in which "an authentication system includes a child machine and a main machine capable of performing short-range wireless communication with each other, and a management server that communicates with the main machine via a network. The authentication system performs the following steps: a step of sending the public key of the child machine and the main machine IDx to the management server; a step of using the public key of the child machine as an identification tag to determine whether the child machine has a registered main machine; and a step of sending a message to the main machine determined according to the registered main machine IDx in the case where there is a registered main machine ID, indicating that the child machine is requesting SSP processing for the new main machine. (Excerpt from the abstract)".

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-84297 Summary of the Invention

[0008] Technical problem to be solved by the invention

[0009] From a privacy perspective, tags cannot usually be shared. To share a typical tag with multiple people, the tag must be disconnected from the previous user's portable device and reconnected to the next user's portable device. This operation must be repeated each time the tag is carried by a new user, which is very troublesome.

[0010] Furthermore, shareable tags pose a privacy risk because their location and connected mobile terminal can be viewed from other registered mobile terminals. Furthermore, when sharing a handset that can wirelessly connect to a mobile terminal, the handset's location can be determined, posing a risk of privacy violations. Therefore, this issue is not limited to tags.

[0011] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to share a slave unit that can be wirelessly connected to a master unit with others while protecting privacy.

[0012] Technical means to solve the problem

[0013] In order to achieve the above-mentioned purpose, the present invention has the structure described in the technical solution to be protected. For example, the present invention is a shared system of a sub-machine capable of wirelessly connecting to a mother machine, comprising: a sub-machine; a mother machine capable of wirelessly connecting to the sub-machine using a short-range wireless communication interface; and a base station, wherein the base station comprises: a mobile communication interface capable of communicating with the mother machine; a short-range wireless communication interface capable of short-range wireless communication with the mother machine and the sub-machine respectively; a positioning sensor that measures the sub-machine position consisting of the relative position of the sub-machine relative to the base station, and the relative position of the mother machine relative to the base station in a base station management area consisting of a real space containing the existence position of the base station. The mother machine position of the position structure; a memory, which stores a device list; and a first processor, which updates the device list, in which the mother machine position, the child machine position and status information indicating the sharing status of the child machine are registered, the mother machine includes: a mobile communication interface; and a mother machine short-range wireless communication interface, which can perform short-range wireless communication with the child machine, the child machine includes a child machine short-range wireless communication interface, which can perform short-range wireless communication with the base station and the mother machine respectively, when the first processor determines that the child machine is located within the management area of ​​the base station based on the child machine position, The status information of the sub-machine in the device list is updated to the storage status, and the short-range wireless communication interface of the base station is used to wirelessly connect to the sub-machine. When it is determined that the mother machine is taken out together with the sub-machine based on the position of the sub-machine and the position of the mother machine, the wireless connection between the sub-machine and the base station is released, and a sub-machine connection request signal requesting wireless connection with the sub-machine is sent to the mother machine, the status of the sub-machine in the device list is updated to the taken-out status, and the wireless connection target of the sub-machine is updated to the mother machine. In response to the sub-machine connection request signal, the mother machine uses the short-range wireless communication interface of the mother machine to connect to the sub-machine. The first processor sends a sub-machine connection release request signal to the mother machine to request the mother machine to release the wireless connection with the sub-machine when the first processor determines that the sub-machine has returned to the management area of ​​the base station based on the position of the sub-machine, updates the status information of the sub-machine in the device list to the storage status, and updates the wireless connection target of the sub-machine from the mother machine to the base station. The mother machine responds to the sub-machine connection release request signal to release the wireless connection with the sub-machine established using the mother machine's short-range wireless communication interface, and the base station uses the short-range wireless communication interface to establish a wireless connection with the sub-machine.

[0014] Effects of the Invention

[0015] According to the present invention, a slave device that can be wirelessly connected to a master device can be shared with others while protecting privacy. Other objects, features, and effects than those described above will be described in the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing the configuration of a loss-prevention tag sharing system according to an embodiment of the present invention.

[0017] Figure 2 This is a diagram showing an example of the hardware configuration of a BS.

[0018] Figure 3 This is a diagram showing an example of the hardware configuration of a tag.

[0019] Figure 4 This is a diagram showing an example of the hardware configuration of a portable terminal.

[0020] Figure 5A It means from Figure 1 An illustration of a state where the tag and the portable terminal are taken out of the BS management area.

[0021] Figure 5B It means from Figure 1 This figure illustrates the state where a tag is taken out of the BS management area independently from the state of .

[0022] Figure 6 This is a flowchart showing the flow of the loss-preventing tag sharing process according to the first embodiment.

[0023] Figure 7 This is a flowchart showing the details of the device registration process.

[0024] Figure 8A This is a diagram showing an example of a device list generated by the BS.

[0025] Figure 8B This is a diagram showing an example of a device list generated by the BS.

[0026] Figure 8C This is a diagram showing an example of a device list generated by the BS.

[0027] Figure 9 It means different users from Figure 1 An illustration of the state where the tag is taken out of the BS management area from the state of .

[0028] Figure 10 It means from Figure 1 The status is transferred to Figure 9 An example of a device list in the state of .

[0029] Figure 11 It is a diagram showing the structure of a shared system for loss-preventing tags according to a second embodiment.

[0030] Figure 12This is a flowchart showing the flow of the loss-preventing tag sharing process according to the second embodiment. DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the present invention's system and method for sharing a slave unit capable of wirelessly connecting to a master unit will be described with reference to the accompanying drawings. The same reference numerals are used throughout the drawings to designate the same invention, and redundant descriptions will be omitted.

[0032] The present invention can provide a sharing system and method for a slave device that can wirelessly connect to a base device while taking personal privacy into consideration. Therefore, it is expected to promote technological progress in labor-intensive industries, thereby contributing to 8.2 of the United Nations Sustainable Development Goals (SDGs): achieving higher levels of economic productivity through diversified operations, technological upgrading, and innovation, including focusing on the development of high-value-added and labor-intensive industries.

[0033] In the following description, the embodiments of the present invention's system and method for sharing a slave device capable of wirelessly connecting to a master device will be described using an example of a system for sharing loss prevention tags. Therefore, in the following description, the portable terminal represents the master device, and the tag represents the slave device.

[0034] Figure 1 This is a diagram showing the configuration of a loss-prevention tag sharing system according to an embodiment of the present invention.

[0035] Figure 1 A shared system 1 for anti-loss tags includes a base station (hereinafter referred to as "BS") 1000 for registering the shared status of portable terminals 100, 200 and tags 2000, 2100, 2200. Tags 2000, 2100, 2200 are attached to a key 300, a key 400, and a handbag 500, respectively.

[0036] When the tag sharing operation of BS 1000 is started, mobile terminals 100 and 200 and tags 2000 , 2100 , and 2200 are registered in BS 1000 .

[0037] The portion of real space that includes the location of BS 1000 is called a base station management area (hereinafter referred to as "BS management area") 5000. This area is used to manage the relative positions of mobile terminals 100, 200 and tags 2000, 2100, and 2200. BS management area 5000 is the distance within which the mobile terminal 100 and tag 2000 can be adequately located using the wireless communication method used for relative position measurement. The range of BS management area 5000 varies depending on the usage environment, the radio wave strength of the wireless communication method used for relative position measurement, and other factors. Depending on the performance of the wireless communication method used for relative position measurement, the communicable range may be larger than the set BS management area 5000. In such cases, even if BS 1000 can measure relative position, the measurement results may indicate that the BS is outside the BS management area 5000. The range of BS management area 5000 can also be arbitrarily changed by the user. Furthermore, if the performance of the wireless communication method used to measure the relative positions of BS 1000, portable terminal 100, and tag 2000 is exactly the same, the communication range of the wireless communication method can be set to BS management area 5000. In the embodiment of the present invention, as an example, BS management area 5000 is set to a range with a radius of 7 meters centered on BS 1000.

[0038] In this embodiment, BS 1000 uses UWB (ultra-wideband) wireless communication to detect the relative positions of portable terminals 100, 200 and tags 2000, 2100, and 2200. Therefore, the ultra-wideband wireless communication interface (UWBI / F) included in BS 1000 functions as a positioning sensor. UWBI / F can detect the distance and direction of portable terminals 100, 200 and tags 2000, 2100, and 2200 relative to BS 1000 based on the arrival time of radio waves and the direction of received waves, thereby providing relative positions as detection results. This relative position, as distinguished from absolute position expressed using a so-called world coordinate system that uniquely identifies a point in real space, defines only the position relative to the BS.

[0039] BS 1000 measures the relative positions of the mobile terminals 100, 200 and the tags 2000, 2100, 2200. The relative positions of the mobile terminals 100, 200 correspond to the master position, and the relative positions of the tags 2000, 2100, 2200 correspond to the slave position.

[0040] If BS 1000 determines that both mobile terminal 100 and tag 2000 are outside BS management area 5000, it transmits a tag connection request signal (equivalent to a slave connection request signal) to mobile terminal 100, thereby establishing a wireless connection between mobile terminal 100 and tag 2000, which have both left BS management area 5000, using a short-range wireless communication interface. Upon receiving the tag connection request signal, mobile terminal 100 automatically establishes a wireless connection with tag 2000, which has also left BS management area 5000. This short-range wireless communication utilizes, for example, a Bluetooth (registered trademark) interface, but other communication methods may also be used.

[0041] BS 1000 includes a device list that records device information of registered portable terminals 100 and tags 2000, connection destination information of the near field communication interface, relative position information, etc. The device list is updated every time measurement is performed for connection destination information and relative position information that gradually change.

[0042] The device list can also be managed by devices other than BS 1000. For example, a management server can be provided on a personal computer or network to update the device list. Alternatively, a personal computer or portable terminal 100, 200, or other device can be connected to BS 1000 to enable registration and configuration changes for portable terminals 100, 200 and tags 2000, 2100, 2200.

[0043] Figure 2 This is a diagram showing an example of the hardware configuration of BS1000.

[0044] The BS 1000 includes a control circuit 1001 , a data bus 1012 , a communication processing unit 1007 , a speaker 1013 , a display 1014 , a power supply 1015 , a geomagnetic sensor 1016 , and the like.

[0045] The control circuit 1001 includes a main processor 1002 (equivalent to a first processor), a ROM (Read Only Memory) 1003 , a RAM (Random Access Memory) 1004 , a flash memory 1005 , an RTC (Real Time Clock) 1006 , and the like.

[0046] ROM 1003 stores the operating program of BS 1000 .

[0047] RAM 1004 is a memory constituting a work area and is used to load an operating program.

[0048] The flash memory 1005 stores a device list.

[0049] The RTC 1006 provides the date and time when the positions, distances, etc. of the portable terminals 100, 200 and the tags 2000, 2100, 2200 are measured.

[0050] Communication processing unit 1007 includes a wireless LAN interface (I / F) 1008, a mobile communication interface (I / F) 1009, a short-range wireless communication interface (I / F) 1010, and a UWB interface (I / F) 1011. Short-range wireless communication I / F 1010 is, for example, a Bluetooth (registered trademark) communication I / F (BTI / F). When tags 2000, 2100, and 2200 are within BS management area 5000, tags 2000, 2100, and 2200 establish wireless communication connections with BS 1000 via the BTI / F. However, wireless communication connections can also be established using communication means other than the BTI / F.

[0051] The mobile communication I / F 1009 is an interface capable of accessing mobile phone communication networks such as 4G, 5G, and LTE.

[0052] The control circuit 1001 measures the relative position and distance between the portable terminal 100, 200 and the tag 2000, 2100, 2200 based on the registration of the portable terminal 100, 200 and the tag 2000, 2100, 2200, information from the communication processing unit 1007, etc., calculates the mutual distance and movement direction of the portable terminal 100, 200 and the tag 2000, 2100, 2200, determines whether it exceeds the BS management area 5000, instructs the sending of a tag connection request signal (equivalent to a slave unit connection request signal) and a tag connection release request signal (equivalent to a slave unit connection release request signal), and sounds an alarm in the speaker 1013.

[0053] Figure 3 2 is a diagram showing an example of the hardware configuration of tags 2000 , 2100 , and 2200 .

[0054] Tags 2000, 2100, and 2200 are each configured to include a control circuit 2001, a data bus 2012, a communication processing unit 2007, a speaker 2013, a battery 2015, an LED 2022, and the like.

[0055] The control circuit 2001 includes a main processor 2002 , a ROM 2003 , a RAM 2004 , and a flash memory 2005 .

[0056] ROM 2003 stores the operation programs of tags 2000 , 2100 , and 2200 .

[0057] RAM 2004 is a memory constituting a work area and is used to load an operating program.

[0058] The flash memory 2005 stores device information of the tags 2000 , 2100 , and 2200 .

[0059] The communication processing unit 2007 includes a wireless LAN I / F 2008 , a short-range wireless communication I / F (equivalent to a slave short-range wireless communication interface) 2010 , a UWBI / F 2011 , and a GPS I / F 2021 .

[0060] In response to connection requests from BS 1000 and mobile terminals 100 and 200 , control circuit 2001 performs near-field wireless communication connection processing with BS 1000 and mobile terminals 100 and 200 using near-field wireless communication I / F 2010 .

[0061] LED 2022 displays the connection status, remaining battery level, etc. of each of tags 2000 , 2100 , and 2200 .

[0062] Figure 4 1 and 2 are diagrams showing hardware configuration examples of the portable terminals 100 and 200 .

[0063] Each of the portable terminals 100 and 200 includes a control circuit 101 , a data bus 127 , a sensor group 106 , a communication processing unit 113 , an image processing unit 118 , an audio processing unit 122 , and a battery 126 .

[0064] The control circuit 101 includes a main processor 102 (equivalent to a second processor), a ROM 103 , a RAM 104 , a flash memory 105 , and an RTC 128 .

[0065] The ROM 103 stores operating programs of the portable terminals 100 and 200 .

[0066] RAM 104 is a memory constituting a work area and is used to load operating programs.

[0067] The flash memory 105 stores applications of the portable terminals 100 and 200 , data of the applications, and various setting information of the portable terminals 100 and 200 .

[0068] RTC128 provides the date and time of operation of various applications and saves the date and time of various setting information.

[0069] The sensor group 106 includes a GPS receiver 107 , a geomagnetic sensor 108 , a distance sensor 109 , an acceleration sensor 110 , a gyro sensor 111 , and a temperature sensor 112 .

[0070] The image processing unit 118 includes a camera 119 , an image signal converter 120 , and a display 121 .

[0071] The camera 119 captures still images, moving images, and the like.

[0072] The image signal converter 120 performs signal conversion processing (eg, A / D conversion processing and D / A conversion processing) on ​​the captured image signal, and stores the signal in the flash memory 105 or displays the signal on the display 121 .

[0073] The audio processing unit 122 includes a microphone 123 , a codec 124 , and a speaker 125 .

[0074] The microphone 123 performs voice communication and voice input, and the codec 124 performs voice signal processing.

[0075] The communication processing unit 113 includes a mobile communication I / F 114 , a UWB I / F 115 , a wireless LAN I / F 116 , and a short-range wireless communication I / F 117 (equivalent to a base station short-range wireless communication interface).

[0076] The control circuit 101 implements the operation control of the portable terminal 100, 200 through the operation program of the portable terminal 100, 200 stored in the ROM 103, and cooperates with the image processing unit 118, the sensor group 106, the communication processing unit 113, and the sound processing unit 122 based on the application stored in the flash memory 105.

[0077] <First embodiment>

[0078] The first embodiment is an embodiment in which the BS 1000 measures the relative positions of the portable terminals 100 and 200 and the tags 2000, 2100, and 2200 using UWB.

[0079] For the status used in the following instructions, refer to Figure 1 、 Figure 5A 、 Figure 5B Provide explanation. Figure 5A It means from Figure 1 FIG. 1 is an explanatory diagram of a state in which the tag 2000 and the mobile terminal 100 are taken out of the BS management area 5000 from the state of FIG. Figure 5B It means from Figure 1 FIG. 1 is an explanatory diagram of a state in which only the tag 2000 is taken out of the BS management area 5000 from the state of FIG.

[0080] Figure 1 In the initial state shown, the key 300 with the tag 2000 and the portable terminal 100 are located in the BS management area 5000. Then, when going out, as shown in FIG. Figure 5AAs shown, the portable terminal 100 and the key 300 are carried. This state is considered as a normal carrying state. The "normal carrying state" mentioned here refers to the state where the tag 2000 and the portable terminal 100 are carried out together. In contrast, Figure 5B As shown, when the tag 2000 is taken out alone, that is, when the portable terminal 100 and the tag 2000 are not taken out together, the user who holds the tag 2000 outside the BS management area 5000 is unknown, and therefore it is considered to be an illegal outing.

[0081] Below, refer to Figure 6 , the first embodiment is described. Figure 6 This is a flowchart showing the flow of the loss-preventing tag sharing process according to the first embodiment. Figure 1 、 Figure 5A 、 Figure 5B The diagram shows portable terminals 100, 200, and tags 2000, 2100, and 2200. However, for ease of explanation, only the actions of taking portable terminal 100 and tag 2000 out of BS management area 5000 and back are described. Therefore, only portable terminal 100 and tag 2000 are mentioned, and the other devices, namely portable terminal 200, tags 2100, and 2200, are not mentioned. However, the description regarding portable terminal 100 and tag 2000 also applies to portable terminal 200 and tags 2100 and 2200.

[0082] (Device registration processing)

[0083] First, the user registers the tag 2000 and the portable terminal 100 to be managed in the BS 1000 ( s001 ). Figure 7 This is a flowchart showing the details of the device registration process.

[0084] The BS 1000 checks whether the registration target device is already registered in the device list ( s121 ). If it is already registered ( s121 : “Yes”), the device registration is terminated without performing the registration process.

[0085] If the device is unregistered (s121: No), device information is registered for both the portable terminal 100 and the tag 2000 (s122). BS 1000 then wirelessly connects to tag 2000 using NFC I / F 1010, sets the status of both portable terminal 100 and tag 2000 to "storage," sets the tag 2000's connection destination to BS 1000, and completes the device registration process (s123). The device registration process in s001 is performed within BS management area 5000, so the initial state of tag 2000, immediately after device registration, is always "storage."

[0086] The device information includes "category" and "name" for the portable terminal 100 and the tag 2000, respectively, and "telephone number" for the portable terminal 100. After the device registration process is completed, the process proceeds to the location management process of the tag 2000.

[0087] (Tag location management processing)

[0088] Figure 6 Steps s002 and later correspond to the tag 2000's position management process. BS 1000 begins measuring the relative positions of tag 2000 and portable terminal 100 (s002). BS 1000 uses UWBI / F 1011 to measure the relative positions of portable terminal 100 and tag 2000 relative to BS 1000. Relative position includes at least one of relative distance and relative direction, and preferably both. BS 1000 regularly performs relative position measurement on all registered portable terminals 100, 200 and tags 2000, 2100, and 2200.

[0089] Based on the relative position measurement results of mobile terminal 100 in s002, BS 1000 changes the state of mobile terminal 100 (s003). This state change is performed every time the relative position is measured. As described above, BS management area 5000 is set to a radius of 7 meters centered on BS 1000. If the distance between BS 1000 and mobile terminal 100 is less than 7 meters, main processor 1002 determines that mobile terminal 100 is within BS management area 5000 and changes the state of mobile terminal 100 to "stored." If the distance between mobile terminal 100 and BS 1000 increases due to being taken outside, making it impossible to measure the relative position of mobile terminal 100, or if the distance is greater than 7 meters, main processor 1002 determines that mobile terminal 100 is outside BS management area 5000 and changes the state of mobile terminal 100 to "taken out." The relative position information of mobile terminal 100 and the determination of whether it is within BS management area 5000 can be notified to mobile terminal 100. Since the portable terminal 100 may be taken out alone, its status is managed separately from the tag 2000 .

[0090] In step s004, the position of tag 2000 is determined based on the relative position measurement result of tag 2000 in s002. If the distance between BS 1000 and tag 2000 is less than 7 m, main processor 1002 determines that tag 2000 is within BS management area 5000 (s004: Yes).

[0091] BS 1000 then checks the status of tag 2000 ( s005 ). If the status of tag 2000 is “stored” ( s005 : stored), it determines that tag 2000 is in standby mode within BS management area 5000 and proceeds to step s007 without changing the status.

[0092] If the state of the tag 2000 is the "taken out" state (s005: taken out), it means that the tag 2000 has returned from outside the area to the BS management area 5000, so the BS 1000 performs a tag return process (s006).

[0093] In step s006, BS 1000 transmits a tag disconnection request signal to mobile terminal 100, which has also returned to BS management area 5000. After mobile terminal 100 disconnects the wireless connection with tag 2000 via NFC I / F 117, BS 1000, upon receiving the tag disconnection completion signal transmitted from mobile terminal 100, establishes a wireless connection with tag 2000, switches the wireless connection target of tag 2000 from mobile terminal 100 to BS 1000 in the device list, deletes the wireless connection target of mobile terminal 100, and changes the status of mobile terminal 100 and tag 2000 to "storage." The process then proceeds to step s007.

[0094] If the tag sharing termination conditions are met (s007: "Yes"), the process ends. If not (s007: "No"), the process returns to s001. Conditions for tag sharing termination can occur when, for example, BS 1000's main power is turned off, tag 2000's battery is depleted, or tag 2000 is removed from the device list, making it impossible to manage tag 2000. However, even if BS 1000's main power is turned off, the device list is not deleted. Therefore, simply turning the main power back on allows the sharing process to resume for registered devices.

[0095] On the other hand, in step s004 , if BS 1000 cannot measure the relative position of tag 2000 or the distance is greater than 7 m, main processor 1002 determines that tag 2000 is not within BS management area 5000 ( s004 : No) and checks the tag status ( s008 ).

[0096] In step s008 , if the status of the tag 2000 is “taken out” ( s008 : taken out), it is determined that the tag 2000 has been properly taken out before, and the process proceeds to step s007 without changing the status.

[0097] In step s008, if the tag 2000's status is "Stored" (s008: Stored), and in this state, the tag 2000 and the mobile terminal 100 simultaneously leave the BS management area 5000 (s009: Simultaneously), the BS 1000 determines that the tag has been normally removed. The BS 1000 terminates the wireless connection with the tag using the NFC interface 1010 and transmits a tag connection request signal to the mobile terminal 100. The BS 1000 changes the status of the mobile terminal 100 and the tag 2000 in the device list to "Removed," changes the tag 2000's wireless connection target from the BS 1000 to the mobile terminal 100, and changes the mobile terminal 100's wireless connection target to the tag 2000 (s010). After receiving the tag connection request signal, the mobile terminal 100 wirelessly connects to the tag 2000 using the NFC interface 117, and manages the removed tag 2000. The process then proceeds to step s007.

[0098] In step s008, after confirming that tag 2000's status is "Stored" (s008: Stored), if tag 2000 and mobile terminal 100 leave BS management area 5000 at different times (s009: Different), BS 1000 determines that tag 2000 has been illegally removed. In this case, BS 1000 sets the status of tag 2000 in the device list to "Illegally Removed" (s011), notifies mobile terminal 100 of an alarm, and sounds an alarm on BS 1000 itself. The process then proceeds to step s007.

[0099] As another method to improve the accuracy of the determination in step s009 performed by the main processor 1002 of the BS 1000, namely, whether the tag 2000 and the portable terminal 100 have simultaneously left the BS management area 5000, the main processor 1002 of the BS 1000 can periodically measure the relative positions of the portable terminal 100 and the tag 2000. Based on changes in their relative positions, the main processor 1002 of the BS 1000 can calculate the movement direction of the portable terminal 100 and the tag 2000, as well as the distance between them. If the portable terminal 100 and the tag 2000 are within a set distance and moving in the same direction, they are determined to be carried and moved together. The distance used to determine whether they are carried and moved together varies depending on the user's usage and can be adjusted by the user.

[0100] Reference Figures 8A to 8C The following describes the equipment list. Required items in the equipment list vary depending on the implementation. Figure 8A to Figure 8C This is a diagram showing an example of a device list generated by BS 1000 .

[0101] Figure 8AThis is an example of device information such as the "category" and "name" of the portable terminals 100, 200 and tags 2000, 2100, 2200 registered in BS1000, the "telephone number" of the portable terminals 100, 200, etc., the relative position measured by UWB (represented as "position (X, Y) relative to BS" in the figure), the "moving direction" calculated using the displacement of the relative position and the data of the geomagnetic sensor 1016 of BS1000, the connection target of the short-range wireless communication I / F1010 of BS1000, that is, the "wireless connection target", and the "measurement date and time" and "status" obtained from RTC1006.

[0102] exist Figure 8B Shown in Figure 1 Transfer to Figure 5A Example of a device list when Figure 8B is Figure 8A In the device list, the connection destination and status of the tag 2000 and the mobile terminal 100 that have normally left the BS management area 5000 are updated.

[0103] Figure 8B In the example, the status of the portable terminal 100 and the tag 2000 is updated to “taken out”, the wireless connection target of the portable terminal 100 using the near field communication I / F 117 is updated to the tag 2000, and the wireless connection target of the tag 2000 is updated from the BS 1000 to the portable terminal 100.

[0104] exist Figure 8C Shown in Figure 1 Transfer to Figure 5B Example of a device list when Figure 8C is Figure 8A In this example, the connection destination and status are updated when only tag 2000 in the device list exceeds the BS management area 5000.

[0105] When BS 1000 determines that tag 2000 has independently left BS management area 5000, it determines that the tag has been illegally taken out and updates the status to "illegally taken out" status.

[0106] Next, refer to Figure 9 、 Figure 10 , an example in which the key 300 and the tag 2000 are taken out of the BS management area 5000 by different users will be described. Figure 9 It indicates that a user different from the user of the portable terminal 100 is Figure 1 FIG. 2 is an explanatory diagram of a state in which the tag 2000 is taken out of the BS management area 5000 from the state of FIG. Figure 10 It means from Figure 1 The status is transferred to Figure 9An example of a device list in the state of .

[0107] Figure 1 In the state, the tag 2000 uses the short-range wireless communication I / F 2010 to wirelessly connect to the BS 1000. However, when the user of the portable terminal 100 takes the tag 2000 out of the BS management area 5000 (see Figure 5A ), the tag 2000 changes the wireless connection target from BS1000 to the portable terminal 100. Afterwards, when the user of the portable terminal 100 brings the tag 2000 back into the BS management area 5000, the wireless connection target of the tag 2000 changes from the portable terminal 100 to the BS1000, and then returns to Figure 1 , so the device list is restored to Figure 8A .

[0108] In this state, if Figure 9 As shown, when the user of the portable terminal 200 takes the key 300 and the tag 2000 out of the BS management area 5000 together with the portable terminal 200, the tag 2000 uses the short-range wireless communication I / F 2010 to wirelessly connect with the portable terminal 200, and the device list is as follows: Figure 10 As shown, the status of the portable terminal 200 and the tag 2000 becomes “taken out.” Furthermore, in the device list, the wireless connection destination of the tag 2000 is updated to the portable terminal 200 , and the wireless connection destination of the portable terminal 200 is updated to the tag 2000 .

[0109] According to this embodiment, if there are multiple users who can bring tags 2000, 2100, and 2200 back into or out of BS management area 5000, each time a tag 2000, 2100, or 2200 is brought back into BS management area 5000, the wireless connection destination for the tag 2000, 2100, or 2200, connected via NFC I / F 2010, is changed from the respective user's portable terminal 100, 200 to BS 1000, and the device list is updated each time. This ensures that the tag 2000, 2100, or 2200 is handed over to another user via BS 1000, preventing the next user from knowing the previous owner of the tag 2000, 2100, or 2200.

[0110] Furthermore, when tags 2000, 2100, and 2200 are taken outside BS management area 5000, BS 1000 does not manage the absolute locations of tags 2000, 2100, and 2200 and portable terminals 100 and 200. This prevents the location information of the user who took out tags 2000, 2100, and 2200 from being known to other users, thereby preventing privacy violations.

[0111] <Second embodiment>

[0112] Figure 11 This diagram shows the structure of a sharing system for loss prevention tags according to a second embodiment. It specifically illustrates the second embodiment of a method for sharing loss prevention tags. In the second embodiment, when tags 2000, 2100, 2200 and portable terminals 100, 200 are taken outside of a BS management area 5000, portable terminals 100, 200 measure the relative positions of tags 2000, 2100, 2200 to determine whether they were taken out simultaneously. This diagram also illustrates an example in which a single portable terminal 100, 200 connects to multiple tags 2000, 2100, 2200 via near-field wireless communication and then takes them out.

[0113] Figure 11 This indicates that the portable terminal 100 is performing near-field wireless communication, including UWB or Bluetooth (registered trademark), detecting tags 2000 and 2200 located within search area 6000, establishing a wireless connection with the portable terminal 100 using near-field wireless communication I / Fs 1010 and 2010, and has been successfully taken outside of the BS management area 5000. Because the portable terminal 100 can confirm whether tags 2000 and 2200 are within the search area 6000 that includes it, it can determine whether the portable terminal 100 has been taken out alone and can search for tags located outside the BS management area 5000.

[0114] Figure 12 This is a flowchart showing the flow of the loss-preventing tag sharing process according to the second embodiment.

[0115] The mobile terminal 100 starts tag sharing (s200). The mobile terminal 100 sends its own device information to the BS 1000 (s201). The BS 1000 registers the device information of the mobile terminal 100 in the device list. It is assumed that the tags 2000, 2100, and 2200 have already been registered in the BS 1000.

[0116] The mobile terminal 100 measures the distance (terminal-tag distance) between itself and each of the tags 2000 , 2100 , 2200 ( s202 ).

[0117] When the portable terminal 100 uses the radio wave intensity of Bluetooth (registered trademark) communication to measure the terminal tag distance from the tags 2000, 2100, and 2200, BTI / F becomes the distance sensor 109. Alternatively, when the terminal tag distance is measured using UWBI / F 115, UWBI / F becomes the distance sensor 109.

[0118] The mobile terminal 100 determines whether it is located within the BS management area 5000 based on the relative position information between the BS 1000 and the mobile terminal 100 and the information on the range of the BS management area 5000 that is periodically transmitted from the BS 1000 ( s203 ).

[0119] In step s203, the mobile terminal 100 uses its UWBI / F 115 to measure the distance between itself and the BS 1000 (terminal-BS distance). For example, if the terminal-BS distance is less than the radius of the BS management area 5000, it can be inferred that the mobile terminal is within the BS management area 5000. If the mobile terminal 100 returns from outside the BS management area 5000 to within the BS management area 5000, it is assumed that the tags 2000 and 2200, to which the mobile terminal 100 is wirelessly connected using the near-field wireless communication I / F 117, have also been brought back into the BS management area 5000.

[0120] When the mobile terminal 100 determines that it is located in the BS management area 5000 ( s203 : YES), it cancels the wireless connection with the brought-back tags 2000 , 2200 using the NFC I / F 117 and transmits a tag connection cancellation completion signal to the BS 1000 ( s204 ).

[0121] When BS1000 receives the tag connection release completion signal, it uses the short-range wireless communication I / F1010 to wirelessly connect to the tag 2000, 2200, uses the UWBI / F1011 to measure the relative position of the tag 2000, 2200, updates the location information of the device list, and sets the status of the tag 2000, 2200 to "storage" (s205).

[0122] On the other hand, if the mobile terminal 100 determines that it is outside the BS management area 5000 (s203: No), it compares the terminal-tag distance with the proximity determination distance threshold (Dnear_th) for all tags 2000, 2100, and 2200 (s206). If the terminal-tag distance is below the proximity determination distance threshold (s206: Yes), the mobile terminal 100 can infer that it is in proximity with the target tag 2000, 2200. To this end, the mobile terminal 100 transmits a tag disconnection request signal to the BS 1000 to terminate the wireless connection established between the BS 1000 and the tag 2000, 2200 using the near-field wireless communication interface 117. The tag disconnection request signal includes device information of the target tag 2000, 2200, and so on. Upon receiving the tag disconnection request signal, the BS 1000 disconnects the wireless connection with the target tag 2000, 2200 and transmits a tag disconnection completion signal to the mobile terminal 100. Upon receiving the tag connection release completion signal, the portable terminal 100 establishes a wireless connection with the tags 2000 and 2200 using the near field communication I / F 117 ( s207 ).

[0123] BS 1000 determines that mobile terminal 100 and tags 2000 , 2200 have been brought out normally, sets the status to “brought out”, and updates the wireless connection destination of mobile terminal 100 to tags 2000 , 2200 and the wireless connection destination of tags 2000 , 2200 to mobile terminal 100 ( s208 ).

[0124] If the mobile terminal 100 determines that it is outside the BS management area 5000 (s203: No) and no tag is detected within the proximity determination distance threshold (s206: No), it determines that the mobile terminal 100 has been taken out alone and transmits only the device information of the mobile terminal 100 to the BS 1000. The BS 1000 sets the status of the mobile terminal 100 to "out." At this point, if there is a tag at a distance greater than the proximity determination distance threshold (Dnear_th), it can be inferred that a tag not carried with the mobile terminal 100 has been detected.

[0125] To this end, the device information of the tag exceeding the proximity determination distance threshold may be acquired, and the device information and discovery notification may be sent to the BS 1000 ( s209 ).

[0126] BS1000 can notify portable terminal 100 of how to handle tags that have received discovery notifications. For example, if the tag is communicating with another portable terminal through near-field wireless communication (NFC), that is, if it is in the "Out" state in the device list, no specific tag recovery instruction is issued to portable terminal 100. However, if it is "illegally taken out," a tag recovery instruction or an emergency alert can be issued to the portable terminal 100.

[0127] Unless the mobile terminal 100 has completed notifying the BS 1000 of the current status of all tags 2000, 2100, and 2200 in s205, s208, and s209 (s210: "No"), the system returns to s203 and repeats the determination for the next tag. When traveling, the number of tags brought out is not limited to just one. If multiple tags 2000, 2200 are brought out, repeating the above determination process allows the mobile terminal 100 to establish wireless connections with multiple tags 2000, 2200 within the search area 6000 using the near-field wireless communication interface 117.

[0128] If the mobile terminal 100 has completed notification to the BS 1000 for all tags 2000, 2100, and 2200 (s210: Yes) and wants to continue the tag sharing process (s211: No), the process returns to s202. If the tag sharing process termination condition is met (s211: Yes), the process ends (s212).

[0129] According to the second embodiment, because the portable terminals 100 and 200 themselves have a tag search function 2000, 2100, and 2200, they can notify BS 1000 when a tag that is not connected to the mobile terminal is found outside BS management area 5000. BS 1000 can determine whether the tag needs to be retrieved based on its status and contact the portable terminal 100 and 200 appropriately. This facilitates tag retrieval if, for example, a missing tag is accidentally discovered.

[0130] In addition, similar to the first embodiment, when the tags 2000, 2100, 2200 are located within the BS management area 5000, the relative positions of the tags 2000, 2100, 2200 are managed by BS1000. When the tags 2000, 2100, 2200 are located outside the BS management area 5000, the portable terminals 100, 200 use the short-range wireless communication I / F117 to wirelessly connect to the tags 2000, 2100, 2200 to manage the positions of the tags 2000, 2100, 2200. However, BS1000 does not obtain the location information of the external coordinate system of the portable terminals 100, 200 located outside the BS management area 5000, and only manages the situation where the tags 2000, 2100, 2200 are taken out together with the portable terminals 100, 200. Therefore, when sharing tags 2000, 2100, 2200, other sharers will not know the location of the user currently carrying tags 2000, 2100, 2200 based on the location of tags 2000, 2100, 2200.

[0131] Furthermore, when the user currently carrying tag 2000, 2100, or 2200 brings the tag back into BS management area 5000 and another user takes tag 2000, 2100, or 2200 out, tag 2000, 2100, or 2200 is first connected to BS 1000 and placed in storage before the other user takes it out. Therefore, it is impossible to determine the last user carrying tag 2000, 2100, or 2200. This allows multiple users to share tags 2000, 2100, or 2200 without revealing each user's destination or location information, thus achieving both privacy protection and the sharing of tags 2000, 2100, or 2200.

[0132] The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the scope of the BS management area 5000 may be modified according to the usage environment, such as a residence or a workplace.

[0133] In addition, an alarm may be issued when the device is illegally taken out. The target of the alarm notification may be all portable terminals 100, 200 or only pre-specified terminals.

[0134] The hardware used for BS1000 can be a PC or a smartphone. Alternatively, a smart speaker or charging station can also function as a BS.

[0135] Furthermore, the portable terminals 100 and 200 are not limited to smartphones, and may be head-mounted displays or tablet terminals.

[0136] In addition, tags 2000, 2100, 2200 do not need to be limited to "anti-loss tags". They can replace tags 2000, 2100, 2200 and devices such as wireless headphones and smart watches that can be connected to portable terminals 100, 200 and BS1000 through wireless connection using short-range wireless communication I / F2010 can be used as shared object devices of the present invention.

[0137] The relative position measurement method is not limited to UWB. The relative position measurement and the wireless connection with the tags 2000, 2100, and 2200 may use the same wireless communication unit or different units.

[0138] In addition, although a plurality of wireless communication units are described in the block diagram, not all of them are necessarily required.

[0139] Furthermore, as an additional feature, the user name of the person who brought the tag can be displayed when a request is made from a master device. In this case, the master device can be BS1000 or a mobile terminal 100 or 200 connected to BS1000. This allows, for example, sharing tags in a workplace, where only the user carrying the tag is known, eliminating the need to display the user's location. This allows for displaying only the user name, eliminating the need to determine the user's location. This improves the usability of the tag sharing system.

[0140] Alternatively, a configuration can be configured so that only managed items with tags 2000, 2100, or 2200 can be taken out of the BS management area 5000 (without the need to take the terminal with them) with prior permission from the master device. When taking out is permitted, the removal of tags can be managed, for example, by setting a permitted removal time and a scheduled return home time. Furthermore, if the set time is exceeded, an alarm can be sounded on the portable terminal 100, 200 and / or BS 1000, or the tag 2000, 2100, or 2200. This allows, for example, a child without a smartphone to carry a key 300 outside the home, and the tag 2000 attached to the key 300 can be excluded from the warning regarding illegal removal, thereby improving usability.

[0141] Alternatively, the mobile terminal 100 to which tags 2000, 2100, and 2200 are wirelessly connected using the NFC interface 2010 can be changed outside the BS management area 5000. In this case, the mobile terminal 200 after the change sends a change permission request signal to the BS 1000 using the mobile communication interface 114. BS 1000 then sends a tag disconnect request signal to the pre-change mobile terminal 100 and a tag connection request signal to the post-change mobile terminal 200, operating each mobile terminal 100 and 200 to change the wireless connection destination of tags 2000, 2100, and 2200. After the change is complete, a change completion signal is sent to BS 1000 using the mobile communication interface 114, and BS 1000 changes the connection destination in the device list.

[0142] The above describes the embodiments of the present invention, but the structure of the technology for realizing the present invention is not limited to the above embodiments, and various modifications can be considered. For example, the above embodiments are described in detail in order to explain the present invention in an easy-to-understand manner, and are not limited to all the structures that must be described. In addition, part of the structure of a certain embodiment can be replaced with the structure of another embodiment, and the structure of another embodiment can be added to the structure of a certain embodiment. All of these fall within the scope of the present invention. In addition, the numerical values ​​and messages that appear in the text and figures are only examples, and even if different ones are used, the effects of the present invention will not be impaired.

[0143] In addition, the programs described in each processing example may be independent programs, or a plurality of programs may constitute one application program. In addition, the programs may be executed in a different order of performing the processing.

[0144] The functions of the present invention described above can be implemented in part or in whole by hardware, for example, through integrated circuit design. In addition, it can also be implemented in software by having a microprocessor unit, CPU, etc. interpret and execute an action program that implements each function. In addition, the scope of software implementation is not limited, and hardware and software can be used at the same time. In addition, a part or all of each function can also be implemented by a server. In addition, as long as the server can perform functions in collaboration with other components via communication, its method can be arbitrary, such as a local server, cloud server, edge server, network service, etc. The information such as programs, tables, files, etc. that implement each function can be stored in a recording device such as a memory, hard disk, SSD (Solid State Drive) or a recording medium such as an IC card, SD card, DVD, etc., or can be stored in a device on a communication network.

[0145] In addition, the control lines and information lines shown in the figure show the parts necessary for explanation, and do not necessarily show all the control lines and information lines on the product. In fact, it can be considered that almost all structures are connected to each other.

[0146] The above-mentioned embodiment includes the following aspects.

[0147] (Note 1)

[0148] A sharing system for a slave device capable of wirelessly connecting to a master device, comprising:

[0149] Handset;

[0150] A mother machine capable of wirelessly connecting to the child machine using a short-range wireless communication interface; and

[0151] base stations,

[0152] The base station includes:

[0153] a mobile communication interface capable of communicating with the base station;

[0154] A short-range wireless communication interface capable of performing short-range wireless communication with the master device and the slave device respectively;

[0155] a positioning sensor configured to measure, within a base station management area consisting of a real space including the location of the base station, a slave unit position consisting of a relative position of the slave unit relative to the base station and a base unit position consisting of a relative position of the base unit relative to the base station;

[0156] Memory, a list of its storage devices; and

[0157] A first processor, which updates the device list,

[0158] The device list includes the position of the master device, the position of the slave device, and status information indicating the sharing status of the slave devices.

[0159] The mother machine includes:

[0160] Mobile communication interface; and

[0161] The mother machine short-range wireless communication interface can perform short-range wireless communication with the sub-machine,

[0162] The slave device includes a slave device short-range wireless communication interface, which can perform short-range wireless communication with the base station and the master device respectively.

[0163] When the first processor determines that the handset is located within the management area of ​​the base station based on the handset position, the first processor updates the state information of the handset in the device list to a storage state, and uses the short-range wireless communication interface of the base station to establish a wireless connection with the handset. When the first processor determines that the master unit is taken out together with the handset based on the handset position and the master unit position, the first processor releases the wireless connection between the handset and the base station, sends a handset connection request signal to the master unit requesting a wireless connection with the handset, updates the state of the handset in the device list to a taken-out state, and updates the wireless connection target of the handset to the master unit.

[0164] The master device responds to the slave device connection request signal and uses the master device short-range wireless communication interface to wirelessly connect to the slave device.

[0165] When the first processor determines that the slave has returned to the base station management area based on the slave's position, the first processor sends a slave connection release request signal to the master to request the master to release the wireless connection with the slave, updates the state information of the slave in the device list to a storage state, and updates the wireless connection target of the slave from the master to the base station.

[0166] In response to the slave connection release request signal, the master device releases the wireless connection with the slave device established using the master device's short-range wireless communication interface, and the base station establishes a wireless connection with the slave device using the short-range wireless communication interface.

[0167] (Note 2)

[0168] A method for sharing a slave device capable of wirelessly connecting to a master device, comprising:

[0169] A first step includes obtaining, within a base station management area consisting of a real space including the location of the base station, a position of a slave unit consisting of a relative position of a slave unit relative to the base station, and a position of a master unit consisting of a relative position of a master unit relative to the base station, wherein the master unit is capable of wirelessly connecting to the slave unit using a short-range wireless communication interface;

[0170] In a second step, when the base station determines that the slave is located within the base station management area based on the location of the slave, the base station updates the state information of the slave in the device list stored in the base station to a storage state, and the base station establishes a wireless connection with the slave;

[0171] In a third step, when the base station determines that the master unit has been taken out with the child unit based on the position of the child unit and the master unit, the base station releases the wireless connection between the child unit and the base station, sends a child unit connection request signal to the master unit requesting a wireless connection with the child unit, updates the state of the child unit in the device list to a taken-out state, and updates the wireless connection target of the child unit to the master unit;

[0172] The fourth step comprises the following steps: the master device wirelessly connects to the slave device in response to the slave device connection request signal;

[0173] A fifth step, wherein, when the base station determines based on the position of the slave that the slave has returned to the base station management area, the base station transmits a slave connection release request signal to the master station requesting release of the wireless connection with the slave, updates the state information of the slave in the device list to a storage state, and updates the wireless connection target of the slave from the master station to the base station;

[0174] A sixth step, wherein the master device releases the wireless connection with the slave device in response to the slave device connection release request signal; and

[0175] The seventh step is to establish a wireless connection between the base station and the slave.

[0176] Description of Reference Numerals

[0177] 1: Shared system

[0178] 100: Portable terminal

[0179] 101: Control circuit

[0180] 102: Main processor

[0181] 103: ROM

[0182] 104: RAM

[0183] 105: Flash memory

[0184] 106: Sensor Group

[0185] 107: GPS receiver

[0186] 108: Geomagnetic sensor

[0187] 109: Distance sensor

[0188] 110: Accelerometer

[0189] 111: Gyroscope sensor

[0190] 112: Temperature sensor

[0191] 113: Communication Processing Unit

[0192] 114: Mobile Communication I / F

[0193] 116: Wireless LANI / F

[0194] 117: Near Field Communication I / F

[0195] 118: Image Processing Department

[0196] 119: Camera

[0197] 120: Image signal converter

[0198] 121: Display

[0199] 122: Sound processing unit

[0200] 123: Microphone

[0201] 124: Codec

[0202] 125: Speaker

[0203] 126: Battery

[0204] 127: Data bus

[0205] 128: RTC

[0206] 200: Portable terminal

[0207] 300: Key

[0208] 400: Key

[0209] 500: Handbag

[0210] 1001: Control circuit

[0211] 1002: Main processor

[0212] 1003: ROM

[0213] 1004: RAM

[0214] 1005: Flash memory

[0215] 1006: RTC

[0216] 1007: Communication Processing Department

[0217] 1009: Mobile Communication I / F

[0218] 1010: Near Field Communication I / F

[0219] 1011: UWBI / F

[0220] 1012: Data bus

[0221] 1013: Speaker

[0222] 1014: Display

[0223] 1015: Power Supply

[0224] 1016: Geomagnetic sensor

[0225] 2000: Tags

[0226] 2001: Control Circuit

[0227] 2002: Main processor

[0228] 2003: ROM

[0229] 2004: RAM

[0230] 2005: Flash memory

[0231] 2007: Communications Processing Department

[0232] 2008: Wireless LAN I / F

[0233] 2010: Near Field Communication I / F

[0234] 2012: Data Bus

[0235] 2013: Speakers

[0236] 2015: Batteries

[0237] 2021: GPSI / F

[0238] 2022: LED

[0239] 2100: Tags

[0240] 2200: Tags

[0241] 5000: BS management area

[0242] 6000: Search area

Claims

1. A sharing system for a slave device capable of wirelessly connecting to a master device, comprising: Handset; A mother machine capable of wirelessly connecting to the slave machine using a short-range wireless communication interface; and base stations, The base station includes: a mobile communication interface capable of communicating with the base station; A short-range wireless communication interface capable of performing short-range wireless communication with the master device and the slave device respectively; a positioning sensor configured to measure, within a base station management area consisting of a real space including the location of the base station, a slave unit position consisting of a relative position of the slave unit relative to the base station and a base unit position consisting of a relative position of the base unit relative to the base station; Memory, a list of its storage devices; and A first processor, which updates the device list, The device list includes the position of the master device, the position of the slave device, and status information indicating the sharing status of the slave devices. The mother machine includes: Mobile communication interface; and The mother machine short-range wireless communication interface can perform short-range wireless communication with the sub-machine, The slave device includes a slave device short-range wireless communication interface, which can perform short-range wireless communication with the base station and the master device respectively. When the first processor determines that the handset is located within the management area of ​​the base station based on the handset position, the first processor updates the state information of the handset in the device list to a storage state, and uses the short-range wireless communication interface of the base station to establish a wireless connection with the handset. When the first processor determines that the master unit is taken out together with the handset based on the handset position and the master unit position, the first processor releases the wireless connection between the handset and the base station, sends a handset connection request signal to the master unit requesting a wireless connection with the handset, updates the state of the handset in the device list to a taken-out state, and updates the wireless connection target of the handset to the master unit. The master device responds to the slave device connection request signal and uses the master device short-range wireless communication interface to wirelessly connect to the slave device. When the first processor determines that the slave has returned to the base station management area based on the slave's position, the first processor sends a slave connection release request signal to the master to request the master to release the wireless connection with the slave, updates the state information of the slave in the device list to a storage state, and updates the wireless connection target of the slave from the master to the base station. In response to the slave connection release request signal, the master device releases the wireless connection with the slave device established using the master device's short-range wireless communication interface, and the base station establishes a wireless connection with the slave device using the short-range wireless communication interface.

2. The sharing system of a slave unit capable of wirelessly connecting to a master unit according to claim 1, wherein: The sub-machine is at least one of an anti-loss tag, a wireless headset, and a smart watch.

3. The sharing system of a slave unit capable of wirelessly connecting to a master unit according to claim 1, wherein: The master device is at least one of a portable terminal and a head-mounted display.

4. The sharing system of a slave unit capable of wirelessly connecting to a master unit according to claim 1, wherein: The positioning sensor is an ultra-wideband wireless communication interface.

5. The sharing system of a slave unit capable of wirelessly connecting to a master unit according to claim 1, wherein: The device list does not store the absolute positions indicating the inherent positions of the master device and the slave device in the real space.

6. The sharing system of a slave unit capable of wirelessly connecting to a master unit according to claim 1, wherein: The mother machine also includes: a distance sensor for measuring the distance between the master unit and the slave unit; and Second processor, Wherein, when the distance between the main unit and the sub-unit is below a predetermined distance threshold outside the management area of ​​the base station, the second processor establishes a short-range wireless connection with the sub-unit and notifies the base station of the device information of the sub-unit. The base station updates the state of the slave in the device list to a brought-out state, and updates the connection destination of the slave to the base station.

7. A method for sharing a slave device capable of wirelessly connecting to a master device, comprising: A first step includes obtaining, within a base station management area consisting of a real space including the location of the base station, a position of a slave unit consisting of a relative position of a slave unit relative to the base station, and a position of a master unit consisting of a relative position of a master unit relative to the base station, wherein the master unit is capable of wirelessly connecting to the slave unit using a short-range wireless communication interface; In a second step, when the base station determines that the slave is located within the base station management area based on the location of the slave, the base station updates the state information of the slave in the device list stored in the base station to a storage state, and the base station establishes a wireless connection with the slave; In a third step, when the base station determines that the master unit has been taken out with the child unit based on the position of the child unit and the master unit, the base station releases the wireless connection between the child unit and the base station, sends a child unit connection request signal to the master unit requesting a wireless connection with the child unit, updates the state of the child unit in the device list to a taken-out state, and updates the wireless connection target of the child unit to the master unit; The fourth step comprises the following steps: the master device wirelessly connects to the slave device in response to the slave device connection request signal; A fifth step, wherein, when the base station determines based on the position of the slave that the slave has returned to the base station management area, the base station transmits a slave connection release request signal to the master station requesting release of the wireless connection with the slave, updates the state information of the slave in the device list to a storage state, and updates the wireless connection target of the slave from the master station to the base station; A sixth step, wherein the master device releases the wireless connection with the slave device in response to the slave device connection release request signal; and The seventh step is to establish a wireless connection between the base station and the slave.

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