Bluetooth communication system, Bluetooth access point device and operation method

Abstract

The invention relates to a Bluetooth communication system, a Bluetooth access point device and an operation method. A first access point device of the Bluetooth access point devices performs periodic broadcast communication with the wireless device. A second access point device of the Bluetooth access point device performs a connection procedure together with the first access point device, wherein the connection procedure comprises: generating, by the first access point device, connection information about a wireless device to be communicated; receiving, by the second access point device, connection information from the first access point device; the first one of the first access point device and the second access point device broadcasts a connection request signal according to the connection information, so that the to-be-communicated wireless device identifies and receives the connection request signal; receiving, by a second one of the first access point device and the second access point device, a connection response signal from the wireless device to be communicated; and establishing, by the second access point device, a connection to the wireless device to be communicated.

Description

Technical Field

[0001] The invention relates to wireless network communication technology, and in particular to a Bluetooth communication system, a Bluetooth access point device and an operation method. Background Art

[0002] Bluetooth Core Specification Version 5.4 (Bluetooth 5.4) is a new version of the specification proposed by the Bluetooth Special Interest Group (Bluetooth SIG) in 2023. One of the changes is the provision of periodic advertising with response (PAwR) technology, allowing two-way communication between devices in a non-connected communication mode.

[0003] Although the communication based on the periodic broadcast technology with response function is a low data transmission, when the number of wireless devices connected to an access point device is quite large, the bandwidth of the access point device will be occupied, so that the access point device can no longer transmit high data volumes to the wireless devices. Such a configuration will greatly limit the communication of the Bluetooth communication system. Summary of the invention

[0004] In view of the problems of the prior art, one object of the present invention is to provide a Bluetooth communication system, a Bluetooth access point device and an operation method to improve the prior art.

[0005] The present invention includes a Bluetooth access point (AP) device, including: a first access point device and a second access point device. The first access point device is configured to perform periodic broadcast communication with multiple wireless devices according to the periodic advertising with response (PAwR) technology with a response function. The second access point device is configured to perform a connection procedure together with the first access point device, so that the second access point device can connect and communicate with a wireless device to be communicated among the wireless devices, wherein the connection procedure includes: the first access point device generates connection information about the wireless device to be communicated; the second access point device receives the connection information from the first access point device; the first of the first access point device and the second access point device is configured to broadcast a connection request signal according to the connection information so that the wireless device to be communicated can identify and receive it; the second of the first access point device and the second access point device is configured to receive a connection response signal from the wireless device to be communicated, wherein the first and the second can be the same or different; and the second access point device establishes a connection with the wireless device to be communicated.

[0006] The present invention further includes a method for operating a Bluetooth access point device, comprising: a first access point device of the Bluetooth access point device performs periodic broadcast communication with multiple wireless devices according to a periodic broadcast technology with a response function; a second access point device of the Bluetooth access point device and the first access point device jointly perform a connection procedure, wherein the connection procedure includes: the first access point device generates connection information about a wireless device to be communicated among the wireless devices; the second access point device receives the connection information from the first access point device; the first of the first access point device and the second access point device broadcasts a connection request signal according to the connection information so that the wireless device to be communicated can identify and receive it; the second of the first access point device and the second access point device receives a connection response signal from the wireless device to be communicated; and the second access point device establishes a connection with the wireless device to be communicated, wherein the first and the second may be the same or different; and the second access point device performs connection communication with the wireless device to be communicated.

[0007] The present invention further includes a Bluetooth communication system, including: a plurality of wireless devices and a Bluetooth access point device. The Bluetooth access point device includes: a first access point device and a second access point device. The first access point device is configured to perform periodic broadcast communication with the wireless device according to a periodic broadcast technology with a response function. The second access point device is configured to perform a connection procedure together with the first access point device, so that the second access point device and the wireless device to be communicated in the wireless device are connected and communicated, wherein the connection procedure includes: the first access point device generates connection information about the wireless device to be communicated; the second access point device receives the connection information from the first access point device; the first of the first access point device and the second access point device is configured to broadcast a connection request signal according to the connection information so that the wireless device to be communicated can identify and receive it; the second of the first access point device and the second access point device is configured to receive a connection response signal from the wireless device to be communicated, wherein the first and the second can be the same or different; and the second access point device establishes a connection with the wireless device to be communicated.

[0008] The features, implementation and effects of the present invention are described in detail below with reference to the drawings as preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1A A block diagram showing a Bluetooth communication system according to an embodiment of the present invention;

[0010] Figure 1B A timing diagram showing the operation of a Bluetooth communication system in one embodiment of the present invention;

[0011] Figure 2 A timing diagram showing a connection procedure performed by a first access point device and a second access point device on a wireless device to be communicated with in one embodiment of the present invention;

[0012] Figure 3 A schematic diagram showing a packet of a connection request signal according to an embodiment of the present invention;

[0013] Figure 4 A timing diagram showing a connection procedure performed by a first access point device and a second access point device on a wireless device in another embodiment of the present invention;

[0014] Figure 5 A timing diagram showing a connection procedure of a first access point device and a second access point device to a wireless device in another embodiment of the present invention and

[0015] Figure 6 The flowchart of a method for operating a Bluetooth access point device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0016] One object of the present invention is to provide a Bluetooth communication system, a Bluetooth access point device and an operation method, wherein the Bluetooth access point device broadcasts a connection request signal to a wireless device to be communicated, and after receiving a connection response signal from the wireless device to be communicated, a second access point device performs high-data-volume connection communication with the wireless device to be communicated. The first access point device can perform periodic broadcast communication with the wireless device under the condition of stable bandwidth.

[0017] Please also refer to Figure 1A as well as Figure 1B . Figure 1A A block diagram of a Bluetooth communication system 100 according to an embodiment of the present invention is shown. Figure 1B A timing diagram showing the operation of the Bluetooth communication system 100 according to an embodiment of the present invention.

[0018] like Figure 1A As shown, the Bluetooth communication system 100 includes: a plurality of wireless devices 110 and a Bluetooth access point (AP) device 120 .

[0019] The Bluetooth access point device 120 includes a first access point device 130 and a second access point device 140 .

[0020] The first access point device 130 is configured to perform periodic broadcast communication PA with the wireless device 110 according to the periodic advertising with response (PAwR) technology under the Bluetooth protocol.

[0021] The number of wireless devices 110 is P. Figure 1A Indicated as RX 1 ~RXP . The wireless device 110 can be identified by the first access point device 130 through different group identification codes and individual identification codes within the group according to the periodic broadcast technology with response function. Therefore, the maximum number of wireless devices 110 that the first access point device 130 can connect to through the periodic broadcast technology with response function is determined by the maximum number of group identification codes and the maximum number of individual identification codes within the group. In a numerical example, the maximum number of group identification codes is 128, and the maximum number of individual identification codes within the group is 255. Therefore, the maximum number of wireless devices 110 that the first access point device 130 can connect to will be 32640 (128×255). However, the present invention is not limited to this.

[0022] Under the periodic broadcast technology with response function, bidirectional transmission can be performed between the first access point device 130 and the wireless device 110. The first access point device 130 mainly operates as a transmitter (TX), and each wireless device 110 mainly operates as a receiver (RX).

[0023] More specifically, the first access point device 130 polls the wireless device 110 through periodic broadcasting, and the wireless device 110 responds according to a set time.

[0024] like Figure 1B As shown, in a periodic advertising event interval PAI, the first access point device 130 can divide the broadcast data into small packets that are sent regularly and according to a preset interval PAS, and respectively in a subevent interval SE 1 ~SE M The wireless device 110 is transmitted to the wireless device 110.

[0025] by Figure 1B The sub-event interval SE is enlarged in the middle 1 For example, the first access point device 130 is in the sub-event interval SE 1 The starting point transmits the sub-event interval information F 1 After receiving the wireless device 110, at least part of the wireless device 110 will generate a response message R after a predetermined response slot delay time RSD. 0 ~R N and sent to the first access point device 130. Each response message R 0 ~R N There may be a response slot duration RSU according to the setting. 1After the responding wireless device 110 completes the response, the first access point device 130 transmits the sub-event interval information F 2 , as the next sub-event interval SE 2 The beginning of.

[0026] It should be noted that different wireless devices 110 may be configured to perform different sub-event intervals SE according to their respective settings. 1 ~SE M The response may also be made after one or more periodic broadcast event intervals PAI. The present invention is not limited to a specific response method.

[0027] In the above periodic broadcast event interval PAI, each sub-event interval SE 1 ~SE M In the embodiment, the first access point device 130 and the wireless device 110 perform low-data communication. In a numerical example, the low-data communication can be performed by a packet including a data payload with a maximum length of 251 bytes, and the size of multiple type-length-value (TLV) fields included in the data payload is less than 48 bytes. It should be noted that the above numerical value is only an example, and the present invention is not limited thereto.

[0028] In some application scenarios, high data volume communication is required between the first access point device 130 and the wireless device 110. The “high data volume” refers to a data volume greater than a predetermined level compared to the communication based on the aforementioned periodic broadcast technology with a response function.

[0029] For example, the wireless devices 110 are electronic shelf labels (ESLs) and communicate with the first access point device 130 based on a periodic broadcast technology with a response function. When any wireless device 110 needs to update the display content through an over-the-air (OTA) update technology, the first access point device 130 will communicate with the wireless device 110 through high data volume communication. However, when the number of connected wireless devices 110 is greater than a preset value, the high data volume communication between the first access point device 130 and any wireless device 110 will cause insufficient bandwidth, which will affect the broadcast communication to other wireless devices 110.

[0030] The second access point device 140 is configured to perform a connection procedure with the first access point device 130, so that the second access point device 140 and the wireless device to be communicated in the wireless device 110, such as the wireless device labeled RX 1 The wireless device 110 is connected for communication COM.

[0031] In one embodiment, the first access point device 130 and the second access point device 140 actively select one of the wireless devices 110 as the wireless device to be communicated with, and perform a connection procedure on the wireless device to be communicated with.

[0032] In one embodiment, one of the wireless devices 110 acts as a wireless device to communicate and actively transmits a data transmission request signal (not shown) to the first access point device 130 , so that the first access point device 130 and the second access point device 140 can perform a connection procedure.

[0033] Please refer to Figure 2 . Figure 2 The timing diagram of the first access point device 130 and the second access point device 140 performing a connection procedure on the wireless device to be communicated with in one embodiment of the present invention is shown. Figure 2 , marked as RX 1 The manner in which the connection procedure is performed is described with the wireless device 110 being used as the wireless device to communicate.

[0034] exist Figure 2 In the diagram, the different line segments drawn horizontally represent the signal transmission between the devices, and the distribution of the line segments from top to bottom vertically represents the transmission order of the signals from first to last in time. Figure 2 In the figure, the time points T1 to T4 corresponding to the signals indicate the time of transmission.

[0035] At time point T1, the first access point device 130 generates a signal about the wireless device RX 1 The second access point device 140 receives the connection information CI from the first access point device 130 .

[0036] The first access point device 130 and the second access point device 140 are connected via a wired network or a wireless network to exchange information. In one embodiment, the connection information CI includes the first access point device 130 and the wireless device RX to be communicated 1 One or more of the address information, connection time information, connection channel information, and connection verification information.

[0037] At time point T2, the first access point device 130 and the first access point device 140 are configured to broadcast a connection request signal REQ according to the connection information CI so that the wireless device RX to be communicated 1 Identify and receive.

[0038] In this embodiment, based on the periodic broadcast technology with response function, the first access point device 130 is configured to broadcast the connection request signal REQ at a set time, a set channel and a set verification information according to the content of the connection information CI through the sub-event interval information of the sub-event interval. Figure 1B The sub-event interval SE shown 1 Sub-event interval information F 1 The content is set as the content of the connection request signal REQ, so as to achieve the purpose of broadcasting to the wireless device 110.

[0039] Please refer to Figure 3 . Figure 3 A schematic diagram showing a packet of a connection request signal REQ according to an embodiment of the present invention.

[0040] In this embodiment, the packet of the connection request signal REQ includes an initiator address segment IA, a broadcast object address segment AA, and a data segment DA. The initiator address segment IA includes the address information of the device that broadcasts the connection request signal REQ, such as the address information of the first access point device 130. The broadcast object address segment AA includes the address information of the device that receives the connection request signal REQ, such as the address information of the wireless device RX to be communicated. 1 address information.

[0041] The data segment DA may include relevant information required for establishing a connection, such as a randomly generated access address, a cyclic redundancy check (CRC) initial value, a transmission window size, a transmission window offset, a connection interval, a delay, a timeout, a channel map, a channel hop parameter, and a sleep clock accuracy (SCA) of the transmitting end. However, the present invention is not limited thereto.

[0042] Please refer again Figure 2 At time point T3, the second of the first access point device 130 and the second access point device 140 is configured to communicate with the wireless device RX 1 A connection response signal RSP is received, wherein the first and the second may be the same or different. In this embodiment, the first access point device 130 is configured to receive the connection response signal RSP.

[0043] In one embodiment, the packet content of the connection response signal RSP may include the event type (e.g., response) of the packet, the address information of the device sending the connection response signal RSP (e.g., the wireless device RX to be communicated) and the address information of the device sending the connection response signal RSP. 1 The address information of the first access point device 130 and the address information of the device receiving the connection response signal RSP (for example, the address information of the first access point device 130) are received. However, the present invention is not limited thereto.

[0044] At time point T4, the second access point device 140 treats the communication wireless device RX 1 Establish a connection to connect the communication COM and transmit high data volume in the connection communication COM. Since the connection communication COM is not a signal, Figure 2 In the middle, it is shown in a double-headed arrow frame.

[0045] It should be noted that Figure 2 In the embodiment, the time point T1 at which the second access point device 140 receives the connection information CI from the first access point device 130 is earlier than the time point T2 at which the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ. However, in some embodiments, the time point T1 at which the second access point device 140 receives the connection information CI from the first access point device 130 may be later than or equal to the time point T2 at which the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ.

[0046] More specifically, when the second access point device 140 receives the connection information CI at a first time point (corresponding to time point T1), the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ at a second time point (corresponding to time point T2), and the second of the first access point device and the second access point device receives the connection response signal REQ at a third time point (corresponding to time point T3), wherein the first and the second may be the same or different, and at least one of the first time point and the second time point is earlier or equal to each other.

[0047] However, both the first time point and the second time point must be earlier than the third time point. The first time point is earlier than the third time point to ensure that the second access point device 140 can receive the connection information CI before the second of the first access point device and the second access point device receives the connection response signal REQ. On the other hand, since the connection response signal RSP is generated in response to the connection request signal REQ, the second time point should also be earlier than the third time point in essence.

[0048] Please refer to Figure 4 . Figure 4A timing diagram showing the connection process of the first access point device 130 and the second access point device 140 to the wireless device 110 in another embodiment of the present invention. Figure 2 , Figure 4 The horizontal line segments in the figure represent the signal transmission between the devices, and the distribution of the line segments from top to bottom in the vertical direction represents the transmission order of the signals from first to last in time, and the transmission time is represented by the time points T1 to T4 marked corresponding to each signal.

[0049] At time point T1, the first access point device 130 generates a signal about the wireless device RX 1 The second access point device 140 receives the connection information CI from the first access point device 130. The manner in which the first access point device 130 and the second access point device 140 exchange information and the content of the connection information CI are the same as the corresponding Figure 2 The information exchange method and information content described in the embodiments are similar and will not be repeated here.

[0050] At time point T2, the first access point device 130 and the second access point device 140 are configured to broadcast a connection request signal REQ according to the connection information CI so that the wireless device to be communicated can identify and receive it. In this embodiment, the first access point device 130 is configured to broadcast the connection request signal REQ, and the broadcasting method and the content of the connection request signal REQ can be the same as Figure 2 as well as Figure 3 The method is the same as described in the embodiment and will not be repeated here.

[0051] At time point T3, the second one of the first access point device 130 and the second access point device 140 is configured to communicate with the wireless device RX 1 Receive a connection response signal RSP, wherein the first and second signals may be the same or different. In this embodiment, the second access point device 140 is configured to receive the connection response signal RSP, and the content of the connection response signal RSP may be the same as that described in the previous embodiment, which will not be repeated here.

[0052] At time point T4, the second access point device 140 treats the communication wireless device RX 1 A connection is established for connection communication COM and a high volume of data is transmitted in the connection communication COM.

[0053] It should be noted that Figure 4In the embodiment of FIG. 1 , the time point T1 at which the second access point device 140 receives the connection information CI from the first access point device 130 is earlier than the time point T2 at which the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ. Figure 2 In some embodiments, the time point T1 at which the second access point device 140 receives the connection information CI from the first access point device 130 may be later than or equal to the time point T2 at which the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ, and the time point T1 and the time point T2 need to be earlier than the time point T3. Figure 2 The description is the same and will not be repeated here.

[0054] Please refer to Figure 5 . Figure 5 A timing diagram showing a connection procedure of the first access point device 130 and the second access point device 140 to the wireless device 110 in another embodiment of the present invention. Figure 2 , Figure 5 The horizontal line segments in the figure represent the signal transmission between the devices, and the distribution of the line segments from top to bottom in the vertical direction represents the transmission order of the signals from first to last in time, and the transmission time is represented by the time points T1 to T4 marked corresponding to each signal.

[0055] At time point T1, the first access point device 130 generates a signal about the wireless device RX 1 The second access point device 140 receives the connection information CI from the first access point device 130. The manner in which the first access point device 130 and the second access point device 140 exchange information and the content of the connection information CI are the same as the corresponding Figure 2 The information exchange method and information content described in the embodiments are similar and will not be repeated here.

[0056] At time point T2, the first access point device 130 and the second access point device 140 are configured to broadcast a connection request signal REQ according to the connection information CI so that the wireless device to be communicated can identify and receive it. In this embodiment, the second access point device 140 is configured to broadcast the connection request signal REQ. The packet content of the connection request signal REQ transmitted by the second access point device 140, the broadcasting method and the content of the connection request signal REQ can be the same as Figure 2 as well as Figure 3 The method is the same as described in the embodiment of the present invention, the only difference is that the broadcaster is the second access point device 140, which will not be repeated here.

[0057] At time point T3, the second one of the first access point device 130 and the second access point device 140 is configured to communicate with the wireless device RX 1 Receiving the connection response signal RSP In this embodiment, the second access point device 140 is configured to receive the connection response signal RSP, and the content of the connection response signal RSP may be the same as that described in the previous embodiment, which will not be repeated here.

[0058] At time point T4, the second access point device 140 treats the communication wireless device RX 1 A connection is established for connection communication COM and a high volume of data is transmitted in the connection communication COM.

[0059] Therefore, the Bluetooth communication system of the present invention can broadcast a connection request signal to the wireless device to be communicated by the Bluetooth access point device, and after receiving the connection response signal of the wireless device to be communicated, the second access point device can perform high-data-volume connection communication with the wireless device to be communicated. The first access point device can perform periodic broadcast communication with the wireless device under the condition of stable bandwidth.

[0060] Please refer to Figure 6 . Figure 6 A flowchart of a Bluetooth access point device operating method 600 is shown in one embodiment of the present invention.

[0061] In addition to the aforementioned devices, the present invention further discloses a Bluetooth access point device operating method 600, which is applied to, for example, but not limited to, the Bluetooth access point device 120 of FIG. 1. An embodiment of the Bluetooth access point device operating method 600 is as follows: Figure 6 As shown, the following steps are included.

[0062] In step S610 , the first access point device 130 of the Bluetooth access point device 120 performs periodic broadcast communication with the plurality of wireless devices 110 according to the periodic broadcast technology with response function.

[0063] In step S620, the second access point device 140 of the Bluetooth access point device 120 and the first access point device 130 jointly perform a connection procedure S625. The connection procedure S625 includes the execution content of the following steps S630-S670.

[0064] In step S630 , the first access point device 130 generates connection information CI about the wireless device to communicate with in the wireless device 110 .

[0065] In step S640 , the second access point device 140 receives connection information CI from the first access point device 130 .

[0066] In step S650, the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ according to the connection information CI, so that the wireless device to be communicated can identify and receive it. It should be noted that, as described above, the first time point at which the second access point device 140 receives the connection information CI and the second time point at which the first of the first access point device 130 and the second access point device 140 broadcasts the connection request signal REQ are earlier or equal to each other. Therefore, in some embodiments, step S650 can be performed before step S640.

[0067] In step S660 , a second one of the first access point device 130 and the second access point device 140 receives a connection response signal RSP from the wireless device to be communicated, wherein the first and the second may be the same or different.

[0068] In step S670 , the second access point device 140 establishes a connection with the wireless device to be communicated.

[0069] In step S680 , the second access point device 140 connects and communicates with the wireless device to be communicated.

[0070] It should be noted that the above implementation is only an example. In other embodiments, those skilled in the art can make changes without violating the spirit of the present invention. For example, the above embodiments are all marked as RX 1 The wireless device 110 is described as a wireless device to be communicated. However, in fact, the above-mentioned embodiments can be applied to any wireless device 110.

[0071] In summary, the Bluetooth communication system, Bluetooth access point device and operation method of the present invention can broadcast a connection request signal to a wireless device to be communicated by a Bluetooth access point device, and after receiving a connection response signal from the wireless device to be communicated, the second access point device can perform high-data-volume connection communication with the wireless device to be communicated. The first access point device can perform periodic broadcast communication with the wireless device under the condition of stable bandwidth.

[0072] Although the embodiments of the present case are described above, these embodiments are not intended to limit the present case. Those with ordinary knowledge in the technical field may make changes to the technical features of the present case based on the explicit or implicit content of the present case. All these changes may fall within the scope of patent protection sought in the present case. In other words, the scope of patent protection in the present case shall be based on the definition of the claims of this specification.

[0073]

Explanation of symbols

[0074] 100:Bluetooth communication system

[0075] 110: Wireless Device

[0076] 120: Bluetooth access point device

[0077] 130: first access point device

[0078] 140: Second access point device

[0079] 600: Bluetooth access point device operation method

[0080] S610~S680: Steps

[0081] AA: Broadcast object address segment

[0082] CI:Connection Information

[0083] COM:Connection communication

[0084] DA: Data segment

[0085] F 1 、F 2 : Sub-event interval information

[0086] IA: Initiator Address Segment

[0087] PA: Periodic broadcast communication

[0088] PAI: Periodic broadcast event interval

[0089] PAS: Preset Interval

[0090] R 0 ~R N :Response message

[0091] REQ: Connection request signal

[0092] RSD: preset response interval delay time

[0093] RSP: Connection response signal

[0094] RSU: Response interval length

[0095] RX 1 ~RX P :Wireless Devices

[0096] SE 1 ~SE M : Sub-event interval

[0097] T1~T4: time point.

Claims

1. A Bluetooth access point device, comprising: A first access point device configured to perform a periodic broadcast communication with a plurality of wireless devices according to a periodic broadcast technique with a response function; as well as A second access point device is configured to perform a connection procedure with the first access point device, so that the second access point device performs a connection communication with a wireless device to be communicated among the plurality of wireless devices, wherein the connection procedure includes: The first access point device generates connection information about the wireless device to be communicated; The second access point device receives the connection information from the first access point device; a first one of the first access point device and the second access point device is configured to broadcast a connection request signal according to the connection information so that the wireless device to be communicated can identify and receive it; A second one of the first access point device and the second access point device is configured to receive a connection response signal from the wireless device to communicate, wherein the first and the second are the same or different; and The second access point device establishes a connection with the wireless device to be communicated. 2 . The Bluetooth access point device as claimed in claim 1 , wherein the first access point device is configured to broadcast the connection request signal, and the first access point device is configured to receive the connection response signal. 3 . The Bluetooth access point device as claimed in claim 1 , wherein the first access point device is configured to broadcast the connection request signal, and the second access point device is configured to receive the connection response signal. 4 . The Bluetooth access point device as claimed in claim 1 , wherein the second access point device is configured to broadcast the connection request signal, and the second access point device is configured to receive the connection response signal. 5 . The Bluetooth access point device as claimed in claim 1 , wherein the connection information comprises at least one of address information of the first access point device and the wireless device to communicate, connection time information, connection channel information, and connection verification information. 6 . The Bluetooth access point device as claimed in claim 1 , wherein the first access point device and the second access point device actively perform the connection procedure. 7 . The Bluetooth access point device as claimed in claim 1 , wherein the wireless device to be communicated actively transmits a data transmission request signal to the first access point device, so that the first access point device and the second access point device perform the connection procedure.

8. The Bluetooth access point device as claimed in claim 1, wherein the second access point device receives the connection information at a first time point, the first of the first access point device and the second access point device broadcasts the connection request signal at a second time point, and the second of the first access point device and the second access point device receives the connection response signal at a third time point; One of the first time point and the second time point is earlier or the two are equal to each other, and the first time point and the second time point are earlier than the third time point.

9. A method for operating a Bluetooth access point device, comprising: A first access point device of a Bluetooth access point device performs a periodic broadcast communication with a plurality of wireless devices according to a periodic broadcast technology with a response function; A second access point device of the Bluetooth access point device and the first access point device jointly perform a connection procedure, wherein the connection procedure includes: The first access point device generates connection information about a wireless device to be communicated among the plurality of wireless devices; Receiving, by the second access point device, the connection information from the first access point device; A first one of the first access point device and the second access point device broadcasts a connection request signal according to the connection information, so that the wireless device to be communicated can identify and receive it; Receiving a connection response signal from the wireless device to be communicated by a second one of the first access point device and the second access point device, wherein the first and the second are the same or different; and The second access point device establishes a connection with the wireless device to be communicated; and The second access point device performs a connection communication with the wireless device to be communicated.

10. A Bluetooth communication system, comprising: a plurality of wireless devices; and A Bluetooth access point device, comprising: a first access point device configured to perform a periodic broadcast communication with the plurality of wireless devices according to a periodic broadcast technique with a response function; as well as A second access point device is configured to perform a connection procedure with the first access point device, so that the second access point device performs a connection communication with a wireless device to be communicated among the plurality of wireless devices, wherein the connection procedure includes: The first access point device generates connection information about the wireless device to be communicated; Receiving, by the second access point device, the connection information from the first access point device; A first one of the first access point device and the second access point device is configured to broadcast a connection request signal according to the connection information so that the wireless device to be communicated can identify and receive the signal; A second one of the first access point device and the second access point device is configured to receive a connection response signal from the wireless device to communicate, wherein the first and the second are the same or different; and The second access point device establishes a connection with the wireless device to be communicated.

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