Communication system, user equipment and wearable device

TECHNICAL FIELD

0001The present invention relates to the field of communications technologies, and in particular, to a communication system, a user equipment and a wearable device.

BACKGROUND

0002Currently, a wearable device such as a smart watch or a band usually communicates with a terminal device such as a mobile phone in a Bluetooth communication manner, so as to implement functions such as event notification or information synchronization. For example, when the mobile phone has an incoming call, the smart watch may be notified in the Bluetooth communication manner, and then the smart watch has incoming call notification. The wearable device brings convenience to a user, and therefore is drawing attention from more equipment vendors.

0003At home, the wearable device and the terminal device may be placed at different locations. For example, the mobile phone is in a bedroom while the band is worn by a user in a living room; in this case, the mobile phone is far away from the band; because a communication coverage area of the Bluetooth is relatively small, the mobile phone cannot communicate with the band by using the Bluetooth, so that communication between the mobile phone and the wearable device cannot be maintained. Document <patcit id="pcit0001" dnum="US2002160820A1"><text>US2002/160820A1</text></patcit> discloses a communications system, such as a local area data network, that is equipped with a plurality of access points each capable of emulating either a phone mated with a wireless headset, the wireless headset, or both and establishing a link between access points emulating the phone and the headset. Document <patcit id="pcit0002" dnum="EP1482686A2"><text>EP1482686A2</text></patcit> discloses a universal wireless headset that starts the handling of an incoming call by determining whether a piconet can be established between an initiating device (device C) and the wireless headset. If a piconet cannot be established, the processing continues by determining whether the wireless headset can establish a piconet with a device coupled to a network (access point H, device E). Document <patcit id="pcit0003" dnum="JP2001313650A"><text>JP2001313650A</text></patcit> discloses a master wireless apparatus constituted by a master wireless apparatus and one or a plurality of arbitrary slave wireless apparatuses that enables communication between the master wireless apparatus and the slave wireless apparatus.

SUMMARY

0004The present invention provides a communication system as defined by independent claim 1, a user equipment as defined by independent claim 9 and a wearable device as defined by independent claim 15.

BRIEF DESCRIPTION OF DRAWINGS

0005To describe the technical solutions in the embodiments of the present invention or in the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description show merely some embodiments of the present invention, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts. <ul id="ul0001" list-style="none" compact="compact"><li><figref idref="f0001">FIG. 1a</figref> is a schematic structural diagram of a communications system applied to a communications method of a wearable device according to an embodiment of the present invention;</li><li><figref idref="f0001">FIG. 1b</figref> is a schematic structural diagram of another communications system applied to a communications method of a wearable device according to an embodiment of the present invention;</li><li><figref idref="f0002">FIG. 2</figref> is a flowchart of a communications method of a wearable device according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0003">FIG. 3</figref> is a flowchart of another communications method of a wearable device according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0004">FIG. 4</figref> is a flowchart of another communications method of a wearable device according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0004">FIG. 5a</figref> is a flowchart of a method used by user equipment to configure each device in a communications system according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0005">FIG. 5b</figref> is a flowchart of a method of indirect communication between user equipment and a wearable device according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0005">FIG. 6</figref> is a schematic structural diagram of a network connection device according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0006">FIG. 7</figref> is a schematic structural diagram of another network connection device according to an embodiment of the present invention; this embodiment is however not covered by the claims;</li><li><figref idref="f0006">FIG. 8</figref> is a schematic structural diagram of user equipment according to an embodiment of the present invention; and</li><li><figref idref="f0007">FIG. 9</figref> is a schematic structural diagram of another network connection device according to an embodiment of the present invention. This embodiment is however not covered by the claims.</li></ul>

DESCRIPTION OF EMBODIMENTS

0006The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely some but not all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

0007In the specification, claims, and accompanying drawings of the present invention, the terms "first", "second", "third", "fourth", and so on (if existent) are intended to distinguish between similar objects but do not necessarily indicate a specific order or sequence. It should be understood that the data termed in such a way are interchangeable in proper circumstances so that the embodiments of the present invention described herein can be implemented in orders except the order illustrated or described herein. In addition, the terms "include", "contain" and any other variants mean to cover the non-exclusive inclusion, for example, a process, method, system, product, or device that includes a list of steps or units is not necessarily limited to those units, but may include other units not expressly listed or inherent to such a process, method, system, product, or device.

0008In the following, the word embodiment will be used for some methods. However, the methods are not covered by the claims, which are directed to a communication system, a user equipment and a wearable device.

0009An embodiment of the present invention provides a communications method of a wearable device that may be mainly applied to data communications systems shown in <figref idref="f0001">FIG. 1a and FIG. 1b</figref>. The communications system shown in <figref idref="f0001">FIG. 1a</figref> includes user equipment, a wearable device, and a network connection device. The user equipment may be a device that can access a network by using a network connection device, such as a mobile phone, a Pad, or a personal computer. The wearable device may be a device that can be used by pairing with the user equipment (for example, the smart band in <figref idref="f0001">FIG. 1</figref>), such as a smart band or a smart watch. The network connection device may be a device that has a network connection function, such as a home Wireless Fidelity (Wi-Fi) router and a gateway. In an embodiment of the present invention, the network connection device may require a Bluetooth function.

0010Generally, a communication connection between the user equipment and the wearable device is directly established, for example, as according to the present invention, a Bluetooth communication connection. The user equipment may send a message to the wearable device for execution. For example, when the user equipment has an incoming call, the user equipment may send a message to the wearable device, and the wearable device displays the incoming call of the user equipment.

0011In this embodiment, however, when the communication connection between the user equipment and the wearable device is disconnected because of reasons such as a distance, an indirect communication connection between the user equipment and the wearable device may be implemented by using the network connection device. Specifically, a communication connection that is of a protocol and that is between the network connection device and the user equipment is established, for example, a communication connection of the Universal Plug and Play (UPnP) protocol or a communication connection of the Wi-Fi protocol. A communication connection that is of a Bluetooth protocol is established between the network connection device and the wearable device. A message sent by the user equipment to the wearable device may be indirectly transmitted to the wearable device by using the network connection device.

0012The communications system shown in <figref idref="f0001">FIG. 1b</figref> includes the user equipment, the network connection device, the wearable device, and at least one bridge device. For a connection between the user equipment and the network connection device, refer to the connection between the user equipment and the network connection device in <figref idref="f0001">FIG. 1a</figref>. Each bridge device may be connected to the network connection device by using an electrical power cable, the communication connection that is of the Bluetooth protocol may be established between the network connection device and the wearable device by using any one of the bridge devices, so that the network connection device may encapsulate the information sent by the user equipment into a Bluetooth packet, and transmit the Bluetooth packet to the bridge device by using an electrical power cable protocol, and then the bridge device transmits the Bluetooth packet to the wearable device.

0013Main functions of the bridge device are to ensure a coverage area of communication between the network connection device and the wearable device and to ensure that a message sent by the network connection device may arrive to the wearable device.

0014The communications method of a wearable device in this embodiment of the present invention is performed by the network connection device in the system shown in <figref idref="f0001">FIG. 1a or FIG. 1b</figref>. A flowchart is shown in <figref idref="f0002">FIG. 2</figref>, including:

0015Step 101: Determine that a second Bluetooth connection between the user equipment and the wearable device is disconnected, and establish a first Bluetooth connection between the network connection device in a network to which the user equipment belongs and the wearable device.

0016Generally, the second Bluetooth connection between the user equipment and the wearable device is established, and the user equipment may directly communicate with the wearable device. If the second Bluetooth connection is disconnected, in this embodiment, to implement that the user equipment indirectly communicates with the wearable device by using the network connection device, the network connection device separately establish a communication connection to the wearable device and a communication connection to the user equipment. For a communication connection between the network connection device and the user equipment, if the user equipment accesses the network by using the network connection device, the communication connection between the network connection device and the user equipment is established. For a communication connection between the network connection device and the wearable device, establishing the first Bluetooth connection between the network connection device and the wearable device may be triggered in the following cases: <ol id="ol0001" compact="compact"><li>(1) When the user equipment finds that the second Bluetooth connection to the wearable device is disconnected, or when the user equipment finds that a third communication connection to the network connection device is established, the user equipment may directly send a triggering command to the user network connection device, where the triggering command is used to instruct to establish the first Bluetooth connection between the network connection device and the wearable device. When receiving the triggering command sent by the user equipment, the network connection device may determine that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and actively establish the first Bluetooth connection to the wearable device. Specifically, after receiving the triggering command, the network connection device sends a Bluetooth paging message. When finding that the second Bluetooth connection to the user equipment is disconnected, the wearable device determines whether the Bluetooth paging message sent by the network connection device can be received. Alternatively, if the second Bluetooth connection between the wearable device and the user equipment is not disconnected, the wearable device still detects in real time whether the Bluetooth paging message sent by the network connection device is received; if the Bluetooth paging message is received, a Bluetooth paging response is sent to the network connection device; if the network connection device receives the Bluetooth paging response sent by the wearable device, the first Bluetooth connection to the wearable device is established.</li><li>(2) After finding a Bluetooth signal of the wearable device, the network connection device determines that the second Bluetooth connection between the user equipment and the wearable device is disconnected. Specifically, the network connection device may periodically send the Bluetooth paging message. When finding that the second Bluetooth connection to the user equipment is disconnected, the wearable device determines whether the Bluetooth paging message sent by the network connection device can be received. Alternatively, if the second Bluetooth connection between the wearable device and the user equipment is not disconnected, the wearable device still detects in real time whether the Bluetooth paging message is received; if the Bluetooth paging message is received, the Bluetooth paging response is sent to the network connection device; if the network connection device receives the Bluetooth paging response sent by the wearable device, the first Bluetooth connection to the wearable device is established.</li><li>(3) After finding a Bluetooth signal of the wearable device, the network connection device sends an acknowledgment request message to the user equipment, where the acknowledgment request message is used to request the user equipment to determine whether the first Bluetooth connection be established between the network connection device and the wearable device. If an acknowledgment message returned by the user equipment is received, the network connection device determines that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and then establishes the first Bluetooth connection to the wearable device; if an unacknowledgment message returned by the user equipment is received, the first Bluetooth connection may be not established.</li></ol>

0017It should be noted that, in the second case, after the network connection device finds the Bluetooth signal of the wearable device and determine the second Bluetooth connection, the first Bluetooth connection is established; or after the network connection device finds the Bluetooth signal of the wearable device, the first Bluetooth connection is first established, and then the user equipment disconnects the second Bluetooth connection, so as to determine that the second Bluetooth connection is disconnected.

0018It should be noted that, in the two cases of the communications systems shown in <figref idref="f0001">FIG. 1a and FIG. 1b</figref>, the established first Bluetooth connections between the network connection device and the wearable device are different. In the system shown in <figref idref="f0001">FIG. 1a</figref>, a direct first Bluetooth connection between the network connection device and the wearable device is established; however, in the system shown in <figref idref="f0001">FIG. 1b</figref>, an indirect first Bluetooth connection between the network connection device and the wearable device is established by using a bridge device that communicates with the network connection device.

0019It should be further noted that, optionally, after the first Bluetooth connection between the network connection device and the wearable device is established, the network connection device may further send an announcement message to the user equipment, where the announcement message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is established, so that the user equipment may send first information to the wearable device by using the network connection device.

0020Step 102: The network connection device receives first information that is sent by the user equipment through a third communication connection to the network connection device, where the first information is sent to the network connection device by the user equipment through the third communication connection when the second Bluetooth connection between the user equipment and the wearable device is disconnected.

0021Step 103: The network connection device sends the first information to the wearable device through the first Bluetooth connection established in step 101.

0022After the first Bluetooth connection between the network connection device and the wearable device is established, the user equipment may first send, to the network connection device, the first information to be sent to the wearable device, and then the network connection device sends the first information to the wearable device. The first information may be content, an instruction, data, and the like that is sent by the user equipment to the wearable device. A format of the first information sent by the user equipment to the network connection device may be the same as or different from a format of the first information sent by the network connection device to the wearable device. When the user equipment sends the first information to the network connection device, a communications protocol format supported by the third communication connection may be used; and when the network connection device sends the first information to the wearable device, a Bluetooth protocol format is mainly used. Therefore, in a specific operation, the network connection device may convert first information in the communications protocol format supported by the third communication connection to first information in the Bluetooth protocol format.

0023Specifically, the third communication connection between the network connection device and the user equipment may be a communication connection that supports the Internet Protocol (IP), so that the network connection device may receive the first information sent by the user equipment by using the Internet Protocol. Specifically, the network connection device may receive the first information that is in the Bluetooth protocol format and that is carried in a payload of an IP packet, and send the first information to the wearable device through the first Bluetooth connection; or the network connection device may receive first information that is in an upper-layer protocol format and that is carried in an IP packet, and send the first information to the wearable device through the first Bluetooth connection. Upper-layer protocols include but are not limited to: the UPnP protocol; the Digital Living Network Alliance (DLNA) protocol; the Intelligent Grouping and Resource Sharing protocol (IGRS), which is also referred to as the IGRS protocol; the Hypertext Transfer Protocol (HTTP); the Transmission Control Protocol (TCP); and the User Datagram Protocol (UDP). The network connection device converts the first information in the upper-layer protocol format to the first information in the Bluetooth protocol format.

0024The third communication connection may further be a communication connection that supports the Universal Plug and Play protocol. The network connection device may receive first information that is in the UPnP protocol format and that is sent by the user equipment, or convert first information in the UPnP protocol format to first information in the Bluetooth protocol format, and then send the first information to the wearable device through the first Bluetooth connection.

0025The third communication connection may further be a connection that supports the Wi-Fi protocol. The network connection device may receive the first information that is in the Bluetooth protocol format and that is in a payload of a Media Access Control address (MAC) frame of the Wi-Fi protocol, and send the first information to the wearable device through the first Bluetooth connection; or the network connection device may receive the first information that is in an upper-layer protocol format and that is sent by the user equipment by using the Wi-Fi, and convert first information in the upper-layer protocol format to first information in the Bluetooth protocol format, and send the first information to the wearable device through the first Bluetooth connection. Upper-layer protocols include but are not limited to the UPnP protocol, the DLNA protocol, the IGRS, the HTTP, the TCP, the UDP, and the IP.

0026It should be further noted that, when the network connection device sends the first information through the first Bluetooth connection, for the system shown in <figref idref="f0001">FIG. 1a</figref>, the network connection device may directly send the first information to the wearable device; for the system shown in <figref idref="f0001">FIG. 1b</figref>, the communication connection of the Bluetooth protocol may be established between the network connection device and the wearable device by using any one of the bridge devices, so that the network connection device may encapsulate the first information sent by the user equipment into the Bluetooth packet, and transmit the Bluetooth packet to the bridge device by using the electrical power cable protocol, and then the bridge device sends the Bluetooth packet to the wearable device in a communication range of the bridge device.

0027Further, for second information actively sent by the wearable device to the user equipment, the network connection device receives the second information that is sent by the wearable device through the first Bluetooth connection, where the second information may be a notification or data that is sent by the wearable device to the user equipment, information that is reported by the wearable device to the user equipment, or the like. The network connection device may send the second information to the user equipment through the third communication connection to the user equipment. A format of the second information sent by the wearable device to the network connection device may be the same as or different from a format of the second information sent by the network connection device to the user equipment.

0028It can be learned that in the method of this embodiment, if a second Bluetooth connection between user equipment and a wearable device is disconnected, a first Bluetooth connection is established between a network connection device and the wearable device, and the network connection device may send, to the wearable device through the first Bluetooth connection, first information sent by the user equipment. In this way, indirect communication between the user equipment and the wearable device is implemented by using the network connection device, so that the user equipment and the wearable device are not limited by a communication range.

0029It should be noted that, in the communications method in steps 101 to 103, the user equipment indirectly communicates with the wearable device by using the network connection device in the network to which the user equipment belongs. In one case, specifically, under any one of following conditions, the first Bluetooth connection between the network connection device and the wearable device is disconnected, and the user equipment directly communicates with the wearable device:

0030The network connection device receives a first notification message sent by the user equipment, where the first notification message is used to instruct the network connection device to disconnect the first Bluetooth connection between the network connection device the wearable device; and the third communication connection between the network connection device and the user equipment is disconnected.

0031It should be further noted that, the communications method in steps 101 to 103 indicates communication that is performed after each device in the system shown in <figref idref="f0001">FIG. 1a or FIG. 1b</figref> is configured. Therefore, before step 101, the user equipment further configure the network connection device. Specifically, before step 101, the network connection device may further perform a configuration step in any one of the following manners. A flowchart is shown in <figref idref="f0003">FIG. 3</figref>, including: <ol id="ol0002" compact="compact"><li>(1) The user equipment directly performs configuration</li></ol>

0032Step 104: The network connection device receives a first configuration information sent by the user equipment, where the first configuration information includes a Bluetooth address of the wearable device and a key for communication between the network connection device and the wearable device, and may further include information such as a pairing relationship between the user equipment and the wearable device. The network connection device stores the first configuration information, where the first configuration information is used by the network connection device to send the first information to the wearable device through the first Bluetooth connection. Optionally, if the first configuration information includes no pairing relationship between the user equipment and the wearable device, the network connection device may generate the pairing relationship between the user equipment and the wearable device according to the first configuration information. Therefore, when information is transmitted between the network connection device and the wearable device, the network connection device may establish the first Bluetooth connection according to the first configuration information and transmit the information through the first Bluetooth connection.

0033Further, the network connection device may further receive second configuration information sent by the user equipment, and the second configuration information includes Bluetooth service information supported by the wearable device, such as characteristic information of the Bluetooth protocol or a command of the Bluetooth protocol. Therefore, the network connection device may establish a mapping relationship between the Bluetooth service information and the service information supported by the third communication connection, and store the mapping relationship. When sending the first information to the wearable device, the network connection device may convert, according to the mapping relationship, the first information sent through the third communication connection to the first information sent through the first Bluetooth connection, and send the first information to the wearable device through the first Bluetooth connection.

0034When establishing the mapping relationship, the network connection device mainly establishes a correspondence between each piece of information in the Bluetooth service information and each piece of information in the service supported by the third communication connection, for example, establishes a correspondence between a command or a message in the Bluetooth protocol and a command or a message of the protocol supported by the third communication connection.

0035(2) The user equipment indirectly configures that the network connection device actively performs a Bluetooth pairing with the wearable device.

0036Step 105: The network connection device receives a procedure request message sent by the user equipment, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device; and the network connection device enables the Bluetooth pairing procedure with the wearable device according to the procedure request message. That is, the network connection device actively sends a Bluetooth pairing request to the wearable device. When the pairing succeeds, the network connection device may store information about the wearable device, including information such as the Bluetooth address and the key. Further, the network connection device generates the pairing relationship between the user equipment and the wearable device.

0037(3) The user equipment indirectly configures that the network connection device passively accepts the pairing with the wearable device.

0038Step 106: The network connection device receives a mode request message sent by the user equipment, where the mode request message is used to request the network connection device to enable a Bluetooth pairing mode; and the network connection device enables the Bluetooth pairing mode according to the mode request message to, so as to passively accept Bluetooth pairing with the wearable device. That is, the network connection device is set to a state of being searchable by another Bluetooth device within a period of time, and can accept a pairing request. When the pairing succeeds, the network connection device may store the information about the wearable device, including information such as the Bluetooth address and the key. Further, the network connection device generates the pairing relationship between the user equipment and the wearable device.

0039A function of the pairing relationship between the user equipment and the wearable device includes: The user equipment first sends, to the network connection device, the first information that is sent to the wearable device, and the network connection device sends the first information to the corresponding wearable device according to the pairing relationship.

0040An embodiment of the present invention further provides another communications method of a wearable device that may be applied to the communications system shown in <figref idref="f0001">FIG. 1a or FIG. 1b</figref>. The method of this embodiment is a method performed by user equipment in the system. A flowchart is shown in <figref idref="f0004">FIG. 4</figref>, including: Step 201: The user equipment determines that a second Bluetooth connection between the user equipment and the wearable device is disconnected. Generally, a communication connection between the user equipment and the wearable device is a Bluetooth communication connection. When the user equipment detects no Bluetooth signal of the wearable device, or strength of a detected Bluetooth signal of the wearable device is less than a threshold, it is determined that the second Bluetooth connection between the user equipment and the wearable device is disconnected. Alternatively, in another case, when determining a third communication connection to a network connection device in a network to which the user equipment belongs is established, the user equipment may actively disconnect the second Bluetooth connection to the wearable device. Therefore, when the third communication connection is established between the user equipment and the network connection device, it is determined that the second Bluetooth connection to the wearable device is disconnected.

0041It should be understood that, after the user equipment finds that the second Bluetooth connection to the wearable device is disconnected, if a first Bluetooth connection between the network connection device and the wearable device is established, the user equipment may perform step 202. Specifically: The user equipment may actively trigger the network connection device to establish the first Bluetooth connection to the wearable device. Specifically, the user equipment may send a triggering command to the network connection device, where the triggering command is used to instruct to establish the first Bluetooth connection between the network connection device and the wearable device, so that the user equipment may indirectly communicate with the wearable device by using the network connection device. Therefore the user equipment considers that the first Bluetooth connection between the network connection device and the wearable device is established, and performs a subsequent step 202. In another case, establishing the first Bluetooth connection between the network connection device and the wearable device is triggered by the wearable device. After establishing the first Bluetooth connection to the wearable device, the network connection device may send an announcement message to the user equipment, where the announcement message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is established, so that the user equipment may perform the subsequent step 202 according to the announcement message. When the user equipment actively triggers the network connection device to establish the first Bluetooth connection to the wearable device, after the user equipment sends the triggering command, the user equipment further receive the announcement message returned by the network connection device, and then the user equipment may perform the subsequent step 202.

0042Step 202: When the user equipment includes information that to be sent to the wearable device, the user equipment sends first information to the network connection device through the third communication connection to the network connection device to which the user equipment belongs, so that the network connection device may send the first information to the wearable device through the first Bluetooth connection.

0043Specifically, the third communication connection between the network connection device and the user equipment may support a connection of the Internet Protocol (IP), so that the user equipment may send the first information to the network connection device by using the Internet Protocol. Specifically, the first information in a Bluetooth protocol format is carried in a payload of an IP packet and sent to the network connection device; or the user equipment sends the first information in an upper-layer protocol format to the network connection device by using an IP packet, and upper-layer protocols include but are not limited to the UPnP protocol, the DLNA protocol, the IGRS, the HTTP, and the TCP.

0044The third communication connection may further be a connection that supports the Universal Plug and Play protocol, and the user equipment sends the first information to the network connection device by using the Universal Plug and Play protocol. Specifically, the first information in the UPnP protocol format is sent to the network connection device. Alternatively, the third communication connection may be a connection that supports the Wi-Fi protocol, and the user equipment sends the first information to the network connection device by using the Wi-Fi protocol. Specifically, the first information in the Bluetooth protocol format is carried in a payload of a MAC frame of the Wi-Fi protocol and sent to the network connection device; or the first information in an upper-layer protocol format is sent to the network connection device by using the Wi-Fi, and upper-layer protocols include but are not limited to the UPnP protocol, the DLNA protocol, the IGRS, the HTTP, the TCP, the UDP, and the IP.

0045The first information sent by the user equipment may be content, an instruction, data, and the like that is sent by the user equipment to the wearable device, and a format of the first information sent by the user equipment to the network connection device may be the same as or different from a format of the first information sent by the network connection device to the wearable device. When the user equipment sends the first information to the network connection device, a communications protocol format supported by the third communication connection may be used; and when the network connection device sends the first information to the wearable device, a Bluetooth protocol format is mainly used. Therefore, in a specific operation, the network connection device may convert first information in the communications protocol format supported by the third communication connection to first information in the Bluetooth protocol format. For a method specifically performed by the network connection device, refer to the foregoing descriptions in this embodiment. Details are not described herein.

0046Further, the user equipment may receive, by using the network connection device, second information sent by the wearable device. The network connection device receives the second information that is sent by the wearable device through the first Bluetooth connection, and the second information may be a notification or data that is sent by the wearable device to the user equipment, information that is reported by the wearable device to the user equipment, or the like. The network connection device sends the second information to the user equipment through the third communication connection to the user equipment. A format of the second information sent by the wearable device to the network connection device may be the same as or different from a format of the second information sent by the network connection device to the user equipment.

0047Further, when any one of conditions occurs, the user equipment may establish the second Bluetooth connection to the wearable device, and the user equipment sends the first information to the wearable device through the second Bluetooth connection.

0048The user equipment finds a Bluetooth signal of the wearable device. For example, the user equipment finds that strength of a Bluetooth signal of the wearable device reaches a threshold.

0049After the third communication connection between the user equipment and the network connection device is disconnected, the user equipment finds the Bluetooth signal of the wearable device.

0050After the user equipment receives a second notification message sent by the network connection device, where the second notification message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is disconnected, the user equipment finds the Bluetooth signal of the wearable device.

0051When the user equipment finds the Bluetooth signal of the wearable device, and when the user equipment does not perform information interaction with the wearable device by using the network connection device in a preset time, the user equipment sends, to the network connection device, a request for disconnecting the first Bluetooth connection.

0052It can be learned that in the method of this embodiment, if a second Bluetooth connection between user equipment and a wearable device is disconnected, a first Bluetooth connection may be established between a network connection device of the user equipment and the wearable device. When the user equipment finds that the second Bluetooth connection to the wearable device is disconnected, the user equipment may send first information to the wearable device by using the network connection device. In this way, indirect communication between the user equipment and the wearable device is implemented by using the network connection device, so that the user equipment and the wearable device can communicate with each other without being limited by a communication range.

0053It should be understood that the communications method in steps 201 and 202 is the communications method that is used after devices in the communications system are configured; however, before step 201, the user equipment may separately configure the wearable device and the network connection device in following manners, specifically: <ol id="ol0003" compact="compact"><li>(1) The user equipment directly and separately configures, for the network connection device and the wearable device, information required for performing first Bluetooth communication between the network connection device and the wearable device.</li></ol>

0054The user equipment sends first configuration information to the network connection device, where the first configuration information includes a Bluetooth address of the wearable device and a key for performing Bluetooth communication between the network connection device and the wearable device, and may further include a pairing relationship between the user equipment and the wearable device, so that the network connection device stores the first configuration information. The user equipment sends third configuration information to the wearable device, where the third configuration information includes a Bluetooth address of the network connection device, and may further include information such as a key for performing communication between the network connection device and the wearable device.

0055Further, the user equipment may further send second configuration information to the network connection device, where the second configuration information includes Bluetooth service information supported by the wearable device. Therefore, the network connection device may establish, according to the second configuration information, a mapping relationship between the Bluetooth service information and service information supported by the third communication connection, and store the mapping relationship.

0056(2) The user equipment indirectly and separately configures a function of the network connection device and a function of the wearable device, so that the network connection device may actively initiate a Bluetooth pairing procedure to the wearable device, and the wearable device may be passively paired with the network connection device.

0057The user equipment sends a mode request message to the wearable device, where the mode request message is used to request the wearable device to enable a Bluetooth pairing mode; that is, the wearable device is set to a state of being searchable by another Bluetooth device within a period of time, and can accept a pairing request. The user equipment sends a procedure request message to the network connection device, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device.

0058Alternatively, the user equipment sends the procedure request message only to the network connection device, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device, instead of sending the mode request message to the wearable device to enable the Bluetooth pairing mode. The wearable device is preset to enable a pairing mode, that is, is preset to a state of being searchable by another Bluetooth device, and can accept a pairing request. In a pairing process, the wearable device may prompt a user whether to accept pairing with the network connection device. After the user determines to accept pairing with the network connection device, the wearable device accepts the pairing with the network connection device.

0059(3) The user equipment indirectly and separately configures a function of the network connection device and a function of the wearable device, so that the wearable device may actively initiate a Bluetooth pairing procedure to the network connection device, and the network connection device may be passively paired with the wearable device.

0060The user equipment sends the mode request message to the network connection device, where the mode request message is used to request the network connection device to enable the Bluetooth pairing mode; that is, the network connection device is set to the state of being searchable by another Bluetooth device within a period of time, and can accept the pairing request. The user equipment sends the procedure request message to the wearable device, where the procedure request message is used to request the wearable device to enable the Bluetooth pairing procedure with the network connection device.

0061The following describes a communications method of a wearable device provided in the present invention is described by using an application embodiment. In the communications system of this embodiment shown in <figref idref="f0001">FIG. 1a</figref>, user equipment communicates with a network connection device by using the UPnP protocol, the network connection device communicates with the wearable device by using the Bluetooth protocol, and the user equipment communicates with the wearable device by using the Bluetooth protocol. In this embodiment: <ol id="ol0004" compact="compact"><li>1. The user equipment configures the network connection device and the wearable device. A flowchart is shown in <figref idref="f0004">FIG. 5a</figref>, including: <ol id="ol0005" compact="compact"><li>(1) The user equipment obtains a Bluetooth address BD_ADDR1 of the network connection device and a Bluetooth address BD_ADDR2 of the wearable device, and generates a key Link_Key for performing Bluetooth communication between the network connection device and the wearable device. Specifically, the user equipment may obtain, by using a web client installed on the user equipment, the Bluetooth address BD ADDR1 of the network connection device from a web server, that is, the network connection device; or the user equipment serves as a control point, and reads the Bluetooth address BD_ADDR1 from the network connection device (the network connection device is used as a UPnP device) by using the UPnP protocol.</li><li>(2) The user equipment sends information such as the Bluetooth address BD ADDR1 of the network connection device and the key Link_Key to the wearable device for storage.</li><li>(3) The user equipment sends information such as the Bluetooth address BD_ADDR2 of the wearable device and the key Link_Key to the network connection device for storage. Optionally, the user equipment sends information such as a pairing relationship between the user equipment and the wearable device to the network connection device for storage. If the network connection device receives no pairing relationship between the user equipment and the wearable device, the pairing relationship between the user equipment and the wearable device be established.</li><li>(4) The user equipment obtains Bluetooth service information supported by the wearable device from the wearable device, and sends the Bluetooth service information to the network connection device. Therefore, the network connection device may establish a mapping relationship between the Bluetooth service information supported by the wearable device and service information of the UPnP protocol, and map the wearable device to a UPnP root device of the network connection device. For example, the network connection device establishes a mapping relationship between configuration management service (CMS) information of the UPnP protocol and heart rate service (HEART RATE SERVICE) information supported by the wearable device, specifically: <ol id="ol0006" compact="compact"><li>A. Map the Bluetooth address of the wearable device to a universally unique identifier (UUID) of the UPnP root device.</li><li>B. Establish a mapping relationship between a function (action) and an event in a CMS service and the GATT and a characteristic (CHARACTERISTIC) command in a Bluetooth protocol, for example: A value setting function (SetValues) in the CMS service corresponds to a write request (Write Request) in the Bluetooth protocol; a value obtaining function (GetValues) in the CMS service corresponds to a read request (Read Request) in the Bluetooth protocol; and a report event in the CMS service corresponds to a value handling notification (Handle Value Notification) in the Bluetooth protocol, and the like.</li><li>C. Establish a mapping relationship between a characteristic (CHARACTERISTIC) in the Bluetooth protocol and a parameter in a data model of a CMS service, for example: Characteristics in the Bluetooth protocol, including a heart rate measurement (Heart Rate Measurement), a heart rate measurement client characteristic configuration descriptor (Heart Rate Measurement Client Characteristic Configuration descriptor), a body sensor location (Body Sensor Location), a heart rate control point (Heart Rate Control Point), and the like, are considered as parameters in the data model of the CMS service.</li><li>D. Establish a mapping relationship between a characteristic having a notify (Notify) attribute in the Bluetooth protocol and status variable in the CMS service, so that the wearable device may report a characteristic value, for example: The heart rate measurement (Heart Rate Measurement) in the Bluetooth protocol is corresponding to the status variable of the UPnP protocol.</li></ol></li></ol></li><li>2. The user equipment indirectly communicates with the wearable device by using the network connection device. A flowchart is shown in <figref idref="f0005">FIG. 5b</figref>, including: <ol id="ol0007" compact="compact"><li>(1) In a process of performing the Bluetooth communication between the user equipment and the wearable device, if the wearable device does not receive, within a period of time, a Bluetooth heartbeat packet sent by the user equipment, it is determined that the Bluetooth connection between the wearable device and the user equipment is disconnected. In this case, the wearable device continues to determine whether a Bluetooth paging message sent by the network connection device can be received. If the Bluetooth paging message sent by the network connection device can be received, the wearable device may return a Bluetooth paging response, so as to establish a Bluetooth communication connection between the network connection device and the wearable device. In another specific embodiment (as shown by dashed lines in <figref idref="f0005">FIG. 5b</figref>), if the user equipment does not receive, within a period of time, a Bluetooth heartbeat response message sent by the wearable device, it is determined that the Bluetooth connection to the wearable device is disconnected, and the user equipment sends the triggering command to the network connection device by using the UPnP protocol, so as to trigger the network connection device to establish the Bluetooth communication connection to the wearable device.</li><li>(2) After the Bluetooth communication connection between the network connection device and the wearable device is established, an announcement message is sent to the user equipment, where the announcement message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is established, or that the wearable device is in an online state. For example, the announcement message is used to notify the user equipment that a UPnP root device corresponding to the wearable device is in the online state, and the announcement message is specifically Simple Service Discovery Protocol (Simple Service Discovery Protocol, SSDP) :: alive (alive) announcement message.</li><li>(3) After receiving the SSDP :: alive announcement message sent by the network connection device, the user equipment may indirectly communicate with the wearable device, specifically: <ul id="ul0002" list-style="none" compact="compact"><li>The user equipment sends the first information to the network connection device by using the UPnP protocol, and the network connection device converts the first information sent by using the UPnP protocol to the first information sent by using the Bluetooth protocol, and sends the first information to the wearable device. For example, the first information sent by the user equipment to the wearable device is parameter value reading. The user equipment sends a GetValues () command of the UPnP protocol to the network connection device, and the network connection device converts the Get Values () command to the Read Request () of the Bluetooth protocol and sends the Read Request () to the wearable device.</li><li>When the wearable device sends second information to the user equipment, the wearable device sends the second information to the network connection device by using the Bluetooth protocol, and the network connection device converts second information sent by using the Bluetooth protocol to second information sent by using the UPnP protocol, and sends the second information to the user equipment. For example, the second information sent by the wearable device to the user equipment is heart rate reporting. The wearable device sends a heart rate measurement (Heart Rate Measurement) parameter value to the network connection device by using a Handle Value Notification () message of the Bluetooth protocol, and the network connection device converts the heart rate measurement parameter value to a notification event of the UPnP protocol and report the heart rate measurement parameter value to the user equipment.</li></ul></li><li>(4) When the user equipment finds that strength of a Bluetooth signal of the wearable device reaches a threshold, the user equipment instructs the network connection device to disconnect the Bluetooth connection to the wearable device, so that the user equipment may communicate with the wearable device by establishing a direct communication connection.</li></ol></li></ol>

0062The following describes a communications method of a wearable device provided in the present invention by using another following specific embodiment. In the communications system of this embodiment shown in <figref idref="f0001">FIG. 1b</figref>, the method in this embodiment is similar to the method of the application embodiment corresponding to <figref idref="f0001">FIG. 1a</figref>. A difference is as follows: In this embodiment, a network connection device communicates with a wearable device by using a bridge device, where the bridge device is connected to the network connection device by using an electrical power cable, and the bridge device mainly transmits a Bluetooth message sent by the network connection device or the wearable device.

0063An embodiment of the present invention further provides a network connection device, where the network connection device may be a gateway device such as a Wi-Fi router. A schematic structural diagram of the network connection device is shown in <figref idref="f0005">FIG. 6</figref>, including: a communication establishment unit 11, configured to determine that a second Bluetooth connection between user equipment and a wearable device is disconnected, and establish a first Bluetooth connection to the wearable device, where: <ul id="ul0003" list-style="none" compact="compact"><li>specifically, the communication establishment unit 11 is specifically configured to: after a triggering command sent by the user equipment is received, where the triggering command is used to instruct to establish the first Bluetooth connection between the network connection device and the wearable device, determine that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and establish the first Bluetooth connection to the wearable device; or after a Bluetooth signal of the wearable device is found, determine that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and establish the first Bluetooth connection to the wearable device; or after a Bluetooth signal of the wearable device is found, send an acknowledgment request message to the user equipment, where the acknowledgment request message is used to request the user equipment to determine whether the first Bluetooth connection be established between the network connection device and the wearable device, and after an acknowledgment message returned by the user equipment is received, determine that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and establish the first Bluetooth connection to the wearable device;</li><li>an information receiving unit 12, configured to receive first information that is sent by the user equipment through a third communication connection to the network connection device; and</li><li>a sending unit 13, configured to send the first information received by the information receiving unit 12 to the wearable device through the first Bluetooth connection established by the communication establishment unit 11.</li></ul>

0064It may be understood that, when establishing the first Bluetooth connection between the network connection device and the wearable device, the communication establishment unit 11 may establish the first Bluetooth connection to the wearable device by using a bridge device that communicates with the network connection device; and the sending unit 13 is specifically configured to transmit the first information to the bridge device, and the bridge device sends the first information to the wearable device through the Bluetooth connection to the wearable device.

0065Further, in this embodiment, the information receiving unit 12 is further configured to receive second information sent by the wearable device through the first Bluetooth connection; and the sending unit 13 is further configured to send the second information to the user equipment through the third communication connection.

0066It can be learned that in this embodiment of the present invention, if a second Bluetooth connection between user equipment and a wearable device is disconnected, a first Bluetooth connection between a network connection device and the wearable device is established by using a communication establishment unit 11; when an information receiving unit 12 receives first information that is sent by the user equipment through a third communication connection to the network connection device, a sending unit 13 sends the first information to the wearable device through the first Bluetooth connection. In this way, indirect communication between the user equipment and the wearable device is implemented by using the network connection device, so that the user equipment and the wearable device are not limited by a communication range.

0067As shown in <figref idref="f0006">FIG. 7</figref>, in a specific embodiment, in addition to the structure shown in <figref idref="f0005">FIG. 6</figref>, the network connection device includes a first configuration unit 14, a second configuration unit 15, and a disconnecting unit 16.

0068The first configuration unit 14 is configured to receive first configuration information sent by the user equipment, where the first configuration information includes a Bluetooth address of the wearable device and a key; and store the first configuration information, where the first configuration information further includes information such as a pairing relationship between the user equipment and the wearable device, and the first configuration information is used by the sending unit to send the first information to the wearable device through the first Bluetooth connection. Alternatively, the first configuration unit 14 is configured to receive a procedure request message sent by the user equipment, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device; and enable the Bluetooth pairing procedure with the wearable device according to the procedure request message. Alternatively, the first configuration unit 14 is configured to receive a mode request message sent by the user equipment, where the mode request message is used to request the network connection device to enable a Bluetooth pairing mode; and enable the Bluetooth pairing mode according to the mode request message, so as to accept Bluetooth pairing with the wearable device. The first configuration unit 14 is further configured to establish the pairing relationship between the user equipment and the wearable device.

0069The second configuration unit 15 is configured to receive second configuration information sent by the user equipment, where the second configuration information includes Bluetooth service information supported by the wearable device; and establish a mapping relationship between the Bluetooth service information and service information supported by the third communication connection, and store the mapping relationship. The sending unit 13 is specifically configured to: convert, according to the mapping relationship stored by the second configuration unit 15, first information sent by the user equipment through the third communication connection to first information sent through the first Bluetooth connection, and send the first information to the wearable device through the first Bluetooth connection.

0070The disconnecting unit 16 is configured to receive a first notification message sent by the user equipment, where the first notification message is used to instruct the network connection device to disconnect the first Bluetooth connection between the network connection device the wearable device, and disconnect the first Bluetooth connection between the network connection device the wearable device; or disconnect the third communication connection between the network connection device and the user equipment, and disconnect the first Bluetooth connection between the network connection device the wearable device.

0071An embodiment of the present invention further provides user equipment. A schematic structural diagram of the user equipment is shown in <figref idref="f0006">FIG. 8</figref>, including: <ul id="ul0004" list-style="none" compact="compact"><li>a communication determining unit 20, configured to determine that a second Bluetooth connection between the user equipment and a wearable device is disconnected, where the communication determining unit 20 is specifically configured to: when it is detected that the second Bluetooth connection to the wearable device is disconnected, or when the user equipment determines to establish a third communication connection to the network connection device, disconnect the second Bluetooth connection to the wearable device; and</li><li>an information sending unit 21, configured to: after the communication determining unit 10 determines that the first Bluetooth connection is disconnected, if a first Bluetooth connection between a network connection device in a network to which the user equipment belongs and the wearable device is established, send first information to the network connection device through a third communication connection to the network connection device, so that the network connection device sends the first information to the wearable device through the first Bluetooth connection.</li></ul>

0072Further, the user equipment may further include a configuration sending unit 22, a triggering unit 23, and a communication establishment unit 24 (In <figref idref="f0006">FIG. 8</figref>, dashed lines are used to represent structures that are further included in the user equipment).

0073The configuration sending unit 22 is configured to send first configuration information to the network connection device, where the first configuration information includes a Bluetooth address of the wearable device and a key, and may further include information such as a pairing relationship between the user equipment and the wearable device; and the configuration sending unit 22 is further configured to send third configuration information to the wearable device, where the third configuration information includes a Bluetooth address of the network connection device and a key. Alternatively, the configuration sending unit 22 is configured to send a mode request message to the wearable device, where the mode request message is used to request the wearable device to enable a Bluetooth pairing mode; and send a procedure request message to the network connection device, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device. Alternatively, the configuration sending unit 22 is configured to send a mode request message to the network connection device, where the mode request message is used to request the network connection device to enable a Bluetooth pairing mode; and send a procedure request message to the wearable device, where the procedure request message is used to request the wearable device to enable a Bluetooth pairing procedure with the network connection device.

0074Further, the configuration sending unit 22 is further configured to send second configuration information to the network connection device, where the second configuration information includes Bluetooth service information supported by the wearable device. Therefore, the network connection device may establish, according to the second configuration information, a mapping relationship between the Bluetooth service information and service information supported by the third communication connection, and store the mapping relationship.

0075The triggering unit 23 is configured to send a triggering command to the network connection device, where the triggering command is used to instruct to establish the first Bluetooth connection between the network connection device and the wearable device; and/or the triggering unit 23 is configured to receive an announcement message sent by the network connection device, where the announcement message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is established.

0076It may be understood that, in the user equipment, after the communication determining unit 20 determines that the second Bluetooth connection to the wearable device is disconnected, the information sending unit 21 directly sends the first information; or after the communication determining unit 20 determines that the second Bluetooth connection to the wearable device is disconnected, the triggering unit 23 first triggers the network connection device to establish the first Bluetooth connection to the wearable device, or after the triggering unit 23 receives the announcement message, the information sending unit 21 sends the first information.

0077The communication establishment unit 24 is configured to find a Bluetooth signal of the wearable device and establish a second Bluetooth connection to the wearable device; or after the third communication connection between the user equipment and the network connection device is disconnected, find a Bluetooth signal of the wearable device and establish a second Bluetooth connection to the wearable device; or after a second notification message sent by the network connection device is received, where the second notification message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is disconnected, find a Bluetooth signal of the wearable device and establish a second Bluetooth connection to the wearable device; or when a Bluetooth signal of the wearable device is found, and when the user equipment does not perform information interaction with the wearable device by using the network connection device in a preset time, send, to the network connection device, a request for disconnecting the first Bluetooth connection and establish the second Bluetooth connection to the wearable device. In this case, the information sending unit 21 is further configured to send the first information to the wearable device through the second Bluetooth connection established by the communication establishment unit 24.

0078It can be learned that, in this embodiment, if a second Bluetooth connection between user equipment and a wearable device is disconnected, a first Bluetooth connection between a network connection device in a network to which the user equipment belongs and the wearable device is established. When a communication determining unit 20 in the user equipment finds that the second Bluetooth connection to the wearable device is disconnected, an information sending unit 21 may send the first information to the wearable device by using the network connection device. In this way, indirect communication between the user equipment and the wearable device is implemented by using the network connection device, so that the user equipment and the wearable device are not limited by a communication range.

0079An embodiment of the present invention further provides another network connection device, where the network connection device may be a gateway device such as a Wi-Fi router. A schematic structural diagram of the network connection device is shown in <figref idref="f0007">FIG. 9</figref>, including: a processor 30 connected to a bus, a memory 31, a communications unit 32, and a power supply 33, where the communications unit 32 may include a transmitter 321 and a receiver 322.

0080The memory 31 may be configured to store a software program and a module. The processor 30 executes various functions or applications of a network connection device and implements data processing by running the software program and the module that are stored in the memory 31. The memory 31 mainly includes a program storage area and a data storage area, where the program storage area may store an operating system, an application program required by at least one function, and the data storage area may store data created according to use of the network connection device, and the like. In a specific implementation manner of the present invention, the memory 30 may include a volatile memory, for example, a nonvolatile random access memory (NVRAM), a phase change random access memory (PRAM), or a magnetoresistive random access memory (MRAM); and may further include a nonvolatile memory, for example, at least one magnetic disk storage device, an electrically erasable programmable read-only memory (EEPROM), or a flash memory device such as a NOR flash memory or an NAND flash memory. The nonvolatile memory stores an operating system and an application program to be executed by the processor 30; and the processor 30 loads, from the nonvolatile memory, a running program and data to a memory, and stores digital content in a large number of storage apparatuses. The operating system is used to control and manage a general system task, for example, memory management, storage device control or power management, and various components and/or drives that facilitate communication between various software and hardware.

0081In this embodiment, the program storage area of the memory 31 may store a program that performs the communications method in the embodiment corresponding to <figref idref="f0002">FIG. 2</figref> or <figref idref="f0003">FIG. 3</figref>. Details are not described herein.

0082The power supply 33 is configured to supply power to various parts of the network connection device to keep them running. The power supply 33 may be a built-in battery, for example, a common lithium-ion battery or a nickel-hydride battery; and may also include an external power supply that directly supplies power to the network connection device, for example, an AC adapter. In some embodiments of the present invention, the power supply 33 may have a broader definition; for example, may further include a power management system, a charging system, a power failure detection circuit, a power converter or inverter, a power status indicator (such as a light emitting diode), and any other components related to power generation, management, and distribution of the electronic device.

0083The processor 30 is a control center of the network connection device and is connected to each part of the entire network connection device by using various interfaces and lines. The processor 30 implements various functions of the network connection device and/or processes data by running or executing a software program and/or a module that are/is stored in the memory 31 and by invoking data stored in the memory 31. The processor 30 may be constituted by an integrated circuit (IC), for example, may be constituted by a single packaged IC, or may be constituted by connecting multiple packaged ICs that have a same function or different functions. For example, the processor 30 may include only a central processing unit (CPU), or may be a combination of a GPU, a digital signal processor (DSP), and a control chip (for example, a baseband chip) in a communications unit. In an implementation manner of the present invention, the CPU may be a single computing core, or may include multiple computing cores.

0084In this embodiment, the processor 30 may invoke a program stored in a program storage area, and performs the communications method in the embodiment corresponding to <figref idref="f0002">FIG. 2</figref> or <figref idref="f0003">FIG. 3</figref>. Details are not described herein.

0085The communications unit 32 is configured to establish a communication channel, so that the network connection device may connect the wearable device and the user equipment by using the communication channel. The communications unit 32 may include communication modules (not shown in <figref idref="f0007">FIG. 9</figref>), such as a wireless local area network (wireless LAN for short) module, a Bluetooth module, and a base band module, and radio frequency (RF) circuits corresponding to these communication modules, so as to perform wireless local area network communication, Bluetooth communication and/or cellular communications system communication, such as wideband code division multiple access (W-CDMA) and/or high speed downlink packet access (HSDPA). These communication modules are configured to control communication between all the components in the network connection device, and may support direct memory access.

0086In different implementation manners of the present invention, each of communication modules in the communications unit 32 generally appears in a form of an integrated circuit chip, and the communication modules may be combined selectively instead of including all communication modules and corresponding antenna groups. For example, the communications unit 32 may include only a baseband chip, a radio frequency chip, and a corresponding antenna, so as to provide a communication function in a cellular communications system. The electronic device may be connected to a cellular network or the Internet through a wireless communication connection established by the communications unit 32, for example, wireless local area network access or WCDMA access. In some optional implementation manners of the present invention, a communication module in the communications unit 32, for example, the baseband module, may be integrated into a processor 30, typically, such as APQ+MDM platforms provided by Qualcomm.

0087The radio frequency circuit is configured to receive and send information, or receive and send a signal during a call. Generally, the radio frequency circuit includes a well-known circuit used to perform these functions, which includes but is not limited to an antenna system, a radio frequency transceiver including the transmitter 321 and the receiver 322, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a codec chipset, and a memory. In addition, the radio frequency circuit may further communicate with a network and another device by means of wireless communication. The wireless communications may use any communication standard or protocol, including but not limited to Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), HSUPA (High Speed Uplink Packet Access technology), and Long Term Evolution (LTE).

0088Specifically, in this embodiment, the processor 30 in the network connection device may invoke the program stored in the memory 31 to implement the following functions.

0089The processor 30 is configured to determine that a second Bluetooth connection between user equipment and a wearable device is disconnected, and instruct to establish a first Bluetooth connection between the communications unit 32 and the wearable device. When receiving first information sent through a third communication connection between the user equipment and the network connection device, the receiver 322 in the communications unit 32 instructs the transmitter 321 in the communications unit 32 to send the first information to the wearable device through the established first Bluetooth connection. In this way, indirect communication between the user equipment and the wearable device is implemented by using the network connection device, so that the user equipment and the wearable device are not limited by a communication range.

0090Specifically, when the receiver 322 receives a triggering command sent by the user equipment, where the triggering command is used to instruct to establish the first Bluetooth connection between the network connection device and the wearable device, the processor 31 determines that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and establishes the first Bluetooth connection to the wearable device; or after the communications unit 32 finds a Bluetooth signal of the wearable device, for example, the transmitter 321 sends a Bluetooth paging message, and when the receiver 322 receives a Bluetooth paging response sent by the wearable device, the processor 30 determines that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and instructs to establish the first Bluetooth connection between the communications unit 32 and the wearable device; or after the communications unit 32 finds a Bluetooth signal of the wearable device, the transmitter 321 sends an acknowledgment request message to the user equipment, where the acknowledgment request message is used to request the user equipment to determine whether the first Bluetooth connection be established between the network connection device and the wearable device, and the receiver 322 receives the acknowledgment message returned by the user equipment, the processor 30 determines that the second Bluetooth connection between the user equipment and the wearable device is disconnected, and then the processor 30 instructs to establish the first Bluetooth connection between the communications unit 32 and the wearable device.

0091It may be understood that, when the processor 30 instructs to establish the first Bluetooth connection between the communications unit 32 and the wearable device, specifically, the first Bluetooth connection to the wearable device may be established by using a bridge device that communicates with the network connection device. Specifically, the processor 30 instructs the transmitter 321 to transmit the first information to the bridge device, and the bridge device sends the first information to the wearable device through the Bluetooth connection to the wearable device.

0092Further, the processor 30 is further configured to: when the receiver 322 receives second information that is sent by the wearable device through the first Bluetooth connection, instruct the transmitter 321 to send the second information to the user equipment through the third communication connection.

0093In a specific embodiment, the processor 30 is further configured to: when the receiver 322 receives first configuration information sent by the user equipment, where the first configuration information includes a Bluetooth address of the wearable device and a key, store the first configuration information into the memory 31. The first configuration information is used by the sending unit to send the first information to the wearable device through the first Bluetooth connection, where the first configuration information further includes information such as a pairing relationship between the user equipment and the wearable device. Alternatively, the processor 30 is configured to: when the receiver 322 receives a procedure request message sent by the user equipment, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device, enable the Bluetooth pairing procedure with the wearable device according to the procedure request message. Alternatively, the processor 30 is configured to: when the receiver 322 receives a mode request message sent by the user equipment, where the mode request message is used to request the network connection device to enable a Bluetooth pairing mode, enable the Bluetooth pairing mode according to the mode request message, so as to accept Bluetooth pairing with the wearable device. The processor 30 is further configured to establish the pairing relationship between the user equipment and the wearable device.

0094Further, the processor 30 is further configured to: when the receiver 322 receives second configuration information sent by the user equipment, where the second configuration information includes Bluetooth service information supported by the wearable device, establish a mapping relationship between the Bluetooth service information and service information supported by the third communication connection, and store the mapping relationship in the memory 31; and the processor 30 is specifically configured to: instruct, according to the mapping relationship, the transmitter 321 to convert first information sent by the user equipment through the third communication connection to first information sent through the first Bluetooth connection, and send the first information to the wearable device through the first Bluetooth connection.

0095In another specific embodiment, the processor 30 is further configured to: when the receiver 322 receives a first notification message sent by the user equipment, where the first notification message is used to instruct the network connection device to disconnect the first Bluetooth connection between the network connection device the wearable device, disconnect the first Bluetooth connection between the network connection device the wearable device; or disconnect the third communication connection between the network connection device and the user equipment; and disconnect the first Bluetooth connection between the network connection device the wearable device.

0096An embodiment of the present invention further provides another user equipment. A structure of the user equipment may be similar to the structure of the network connection device shown in <figref idref="f0007">FIG. 9</figref>, including: a processor connected to a bus, a memory, a communications unit, and a power supply, where the communications unit may include a transmitter and a receiver.

0097The processor may invoke a program stored in the memory to implement the following functions.

0098The processor is configured to determine that a second Bluetooth connection between user equipment and a wearable device is disconnected; and if a first Bluetooth connection between a network connection device in a network to which the user equipment belongs and the wearable device is established, instruct the transmitter to send first information to the network connection device through a third communication connection to the network connection device, so that the network connection device sends the first information to the wearable device through the first Bluetooth connection. In this way, indirect communication between the user equipment and the wearable device is implemented by using the network connection device, so that the user equipment and the wearable device are not limited by a communication range. The processor is specifically configured to detect that the second Bluetooth connection to the wearable device is disconnected; or when the user equipment determines to establish a third communication connection to the network connection device, disconnect the second Bluetooth connection to the wearable device, and determine that the second Bluetooth connection to the wearable device is disconnected.

0099In a specific embodiment, the processor is further configured to instruct the transmitter to send first configuration information to the network connection device, where the first configuration information includes a Bluetooth address of the wearable device and a key, and may further include information such as a pairing relationship between the user equipment and the wearable device; and instruct the transmitter to send third configuration information to the wearable device, where the third configuration information includes a Bluetooth address of the network connection device and a key. Alternatively, the processor is further configured to instruct the transmitter to send a mode request message to the wearable device, where the mode request message is used to request the wearable device to enable a Bluetooth pairing mode; and send a procedure request message to the network connection device, where the procedure request message is used to request the network connection device to enable a Bluetooth pairing procedure with the wearable device. Alternatively, the processor is further configured to instruct the transmitter to send a mode request message to the network connection device, where the mode request message is used to request the network connection device to enable a Bluetooth pairing mode; and send a procedure request message to the wearable device, where the procedure request message is used to request the wearable device to enable a Bluetooth pairing procedure with the network connection device.

0100Further, the processor is further configured to instruct the transmitter to send second configuration information to the network connection device, where the second configuration information includes Bluetooth service information supported by the wearable device. Therefore, the network connection device may establish, according to the second configuration information, a mapping relationship between the Bluetooth service information and service information supported by the third communication connection, and store the mapping relationship.

0101In another specific embodiment, the processor is further configured to instruct the transmitter to send a triggering command to the network connection device, where the triggering command is used to instruct to establish the first Bluetooth connection between the network connection device and the wearable device; and/or the receiver is configured to receive an announcement message sent by the network connection device, where the announcement message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is established.

0102It may be understood that, after it is determined that the second Bluetooth connection to the wearable device is disconnected, the processor may directly instruct the transmitter to send the first information; or after it is determined that the second Bluetooth connection to the wearable device is disconnected, instruct the transmitter to trigger the network connection device to establish the first Bluetooth connection to the wearable device; or after the receiver receives the announcement message, instruct the transmitter to send the first information.

0103In another embodiment, the processor further finds a Bluetooth signal of the wearable device and establishes the second Bluetooth connection to the wearable device; or after the third communication connection between the user equipment and the network connection device is disconnected, finds a Bluetooth signal of the wearable device and establishes a second Bluetooth connection to the wearable device; or after a second notification message sent by the network connection device is received, where the second notification message is used to notify the user equipment that the first Bluetooth connection between the network connection device and the wearable device is disconnected, finds a Bluetooth signal of the wearable device and establishes the second Bluetooth connection to the wearable device; or when a Bluetooth signal of the wearable device is found, and when the user equipment does not perform information interaction with the wearable device by using the network connection device in a preset time, sends, to the network connection device, a request for disconnecting the first Bluetooth connection, and establishes the second Bluetooth connection to the wearable device. Therefore, the processor is further configured to instruct the transmitter to send the first information to the wearable device through the established second Bluetooth connection.

0104An embodiment of the present invention further provides a communications system. A schematic structural diagram of the communications system is shown in <figref idref="f0001">FIG. 1a</figref>, including a network connection device, user equipment, and a wearable device.

0105A structure of the network connection device may be similar to the structure of the network connection device in the embodiment corresponding to <figref idref="f0005">FIG. 6</figref>, <figref idref="f0006">FIG. 7</figref>, or <figref idref="f0007">FIG. 9</figref>, and the network connection device is mainly used to connect a communication between the user equipment and the wearable device. A structure of the user equipment may be similar to the structure of the user equipment in the embodiment corresponding to <figref idref="f0006">FIG. 8</figref>, and details are not described herein.

0106The wearable device is configured to: after a first Bluetooth connection to the network connection device is established, receive first information sent by the network connection device; and send second information to the network connection device through the first Bluetooth connection.

0107An embodiment of the present invention further provides another communications system. A schematic structural diagram of the communications system is shown in <figref idref="f0001">FIG. 1b</figref>, including a network connection device, at least one bridge device, user equipment, and a wearable device. The at least one bridge device is separately connected to the network connection device by using an electrical power cable; and the bridge device is configured to only forward a message of a second communications protocol between the network connection device and the wearable device, and ensure a communication range between the network connection device and the wearable device.

0108A structure of the network connection device may be similar to the structure of the network connection device in the embodiment corresponding to <figref idref="f0005">FIG. 6</figref>, <figref idref="f0006">FIG. 7</figref>, or <figref idref="f0007">FIG. 9</figref>, and is mainly used to connect a communication between the user equipment and the wearable device. A structure of the user equipment may be similar to the structure of the user equipment in the embodiment corresponding to <figref idref="f0006">FIG. 8</figref>, and details are not described herein.

0109The wearable device is configured to: after a first Bluetooth connection is performed by using the bridge device connected to the network connection device, receive first information that is forwarded by the bridge device and that is sent by the network connection device through the first Bluetooth connection.

0110A person of ordinary skill in the art may understand that all or some of the steps of the methods in the embodiments may be implemented by a program instructing relevant hardware. The program may be stored in a computer readable storage medium. The storage medium may include: a ROM, a RAM, a magnetic disk, or an optical disc. The communications method of a wearable device, the communications system, and the related device that are provided in the embodiments of the present invention are described in detail above. The principle and implementation of the present invention are described herein by using specific examples. The description about the embodiments is merely provided to help understand the method and core ideas of the present invention. In addition, a person of ordinary skill in the art can make variations and modifications to the present invention in terms of the specific implementations and application scopes according to the ideas of the present invention. Therefore, the content of specification shall not be construed as a limit to the present invention.