Communication connection method, communication device and wearable device

Abstract

The invention provides a communication connection method, communication equipment and wearable equipment, and relates to the field of wearable equipment. The communication connection method comprises the following steps: acquiring a cellular communication parameter set obtained by network searching; and under the condition that the wearable device is connected with the communication device through the short-distance wireless communication, sending the cellular communication parameter set to the wearable device through the short-distance wireless communication, so that the wearable device sends the cellular communication parameter set to the communication device under the condition that the short-distance wireless communication is not available. And accessing a cellular network for communication based on the cellular network communication parameter set. Through the method, the time delay and the required power consumption of switching the wearable equipment to cellular network communication under the condition that short-distance wireless communication is unavailable can be reduced.

Description

Technical Field

[0001] The present application relates to the field of wearable devices, and more specifically, to a communication connection method, a communication device, and a wearable device. Background Art

[0002] Some wearable devices include both short-range communication modules and cellular communication modules. Short-range communication can be Bluetooth, low-power Bluetooth, WiFi (Wireless Fidelity), UWB (Ultra Wide Band), etc. For example, smart watches include Bluetooth modules and cellular communication modules. Smart watches can communicate with smart devices such as mobile phones through the Bluetooth module, and smart watches can access cellular networks for communication through the cellular communication module.

[0003] Some wearable devices can communicate with communication devices such as mobile phones through short-range communication modules. Through the forwarding of the cellular module and the short-range communication module of the communication device, cellular communication can be achieved without the wearable device itself being connected to the cellular network.

[0004] However, wearable devices usually have low power consumption requirements. When the wearable device is disconnected from the short-range wireless communication, the wearable device needs to re-access the cellular network through the cellular communication module. Re-accessing the cellular network requires searching the network, measuring the cell, synchronizing and decoding, etc. before connecting to the cell, thereby accessing the cellular network. This process will generate some power consumption. More importantly, re-accessing the cellular network requires searching the network, measuring the cell, synchronizing and decoding, etc., which takes a long time. For example, some devices may take several seconds or more than ten seconds. This results in a large delay between the disconnection of the wearable device from the short-range wireless communication connection and the re-access of the wearable device to the cellular network through the cellular communication module, which will cause the communication between the wearable device and the remote device to be interrupted for a long time or the connection delay to be long, thereby affecting the user experience.

[0005] On the other hand, when the wearable device is connected to the short-range wireless communication normally, if the wearable device simultaneously performs network search, cell measurement and other operations through the cellular communication module, it will indeed reduce the delay between the disconnection of the wearable device and the short-range wireless communication connection and the re-access of the wearable device to the cellular network through the cellular communication module. However, this will generate greater power consumption and affect the battery life of the wearable device. Summary of the invention

[0006] In view of this, the present application aims to provide a communication connection method, a communication device and a wearable device, so as to reduce the delay of the wearable device switching to cellular network communication when short-range wireless communication is not available, and reduce the power consumption required by the wearable device.

[0007] In the first aspect, an embodiment of the present application provides a communication connection method, which is applied to a communication device, wherein the communication device is communicatively connected to a cellular network; the communication device and the wearable device can be connected via short-range wireless communication, and when the wearable device and the communication device are connected via the short-range wireless communication, the communication device forwards data in the cellular network communication process to the wearable device via the short-range wireless communication, and the cellular network communication function of the wearable device is in a low power consumption state; the communication connection method comprises: obtaining a cellular communication parameter set obtained by searching the network; the cellular communication parameter set comprises parameters required for accessing a cellular network; when the wearable device and the communication device are connected via the short-range wireless communication, the cellular communication parameter set is sent to the wearable device via the short-range wireless communication, so that when the short-range wireless communication is not available, the wearable device accesses the cellular network for communication based on the cellular network communication parameter set.

[0008] In the embodiment of the present application, during the short-distance wireless communication between the wearable device and the communication device, the cellular network communication function of the wearable device is in a low-power state, and the normal operation of the cellular communication function is achieved through the forwarding of the short-distance wireless communication. Since the cellular network communication function is in a low-power state, the network search, cell measurement and other operations performed by the wearable device when the short-distance wireless communication connection is normal are reduced, thereby reducing the power consumption of the wearable device. Therefore, during the short-distance wireless communication between the wearable device and the communication device, the power consumption can be reduced without affecting the cellular communication of the wearable device. After the short-distance wireless communication, since during the short-distance wireless communication between the wearable device and the communication device, the communication device sends the cellular communication parameter set obtained by the network search to the wearable device, therefore, when the short-distance wireless communication is unavailable, the wearable device can access the cellular network through the cellular communication parameter set and quickly restore the cellular communication function, thereby reducing the communication interruption time (that is, reducing the delay of switching to the cellular network communication) and improving the user experience. In addition, since the time required for the wearable device to access the cellular network through operations such as searching the network, measuring the cell, and accessing the cell after the short-range wireless communication connection is disconnected is reduced, and operations such as searching the network and measuring the cell to access the cellular network consume a certain amount of power, reducing the time for accessing the cellular network can also reduce the power consumption of accessing the cellular network.

[0009] In one embodiment, the cellular communication parameter set includes a first parameter set of the current cell of the communication device; sending the cellular communication parameter set to the wearable device through the short-range wireless communication includes: determining whether the wearable device supports the current cell; if it is determined that the wearable device supports the current cell, sending the first parameter set to the wearable device, so that the wearable device can access the current cell through the first parameter set when the short-range wireless communication is not available.

[0010] In most cases, the wearable device and the communication device are relatively close, which is conducive to short-distance wireless communication between the two. At this time, the network cell of the communication device is very likely to be a cell suitable for the wearable device. Therefore, in the embodiment of the present application, it can be determined whether the wearable device supports the current network cell of the communication device. If supported, the first parameter set of the current network cell is sent to the wearable device, so that after short-distance wireless communication is unavailable, the wearable device can access the current network cell of the communication device through the first parameter set. On the one hand, the current network cell is likely to be suitable for the wearable device, which can enable the wearable device to have a better communication effect. On the other hand, the wearable device does not need to re-search the network or determine whether other cells are suitable. The wearable device can reduce power consumption and shorten the time of communication interruption of the wearable device after short-distance wireless communication is unavailable.

[0011] In one embodiment, after determining whether the wearable device supports the current network cell, the method further includes: when the communication device switches from the current network cell to the new network cell, determining whether the new network cell is supported by the wearable device; if the new network cell is supported by the wearable device, then when the wearable device and the communication device are connected through the short-range wireless communication, a new first parameter set of the new network cell is sent to the wearable device, so that the wearable device can access the new network cell through the new first parameter set when the short-range wireless communication is not available.

[0012] The positions of the wearable device and the communication device are movable. During the movement, the network cell of the communication device may change. In an embodiment of the present application, when the network cell changes and the new network cell is supported by the wearable device, a new first parameter set of the new network cell is provided to the wearable device, so that the wearable device can access a cell with better communication effect, thereby reducing the extra power consumption caused by the wearable device having to re-execute operations such as searching the network and accessing the cell due to the poor communication effect of the network cell.

[0013] In one embodiment, the cellular communication parameter set also includes a second parameter set of candidate cells obtained by the communication device searching the network; after determining whether the wearable device supports the current network cell, the method also includes: when it is determined that the wearable device does not support the current network cell, sending the second parameter set to the wearable device, so that the wearable device can access the candidate cell through the second parameter set when the short-range wireless communication is not available.

[0014] In an embodiment of the present application, when the wearable device does not support the current network cell of the communication device, a second parameter set of candidate cells is provided to the wearable device, so that the wearable device can access the candidate cell of the communication device through the second parameter set. Thus, under the premise that the wearable device does not support the current network cell of the communication device, it can also quickly access the cell with better communication effect through the information in the second parameter set without searching the network, thereby reducing the power consumption of accessing the cellular network when having better communication effect.

[0015] In one embodiment, after sending the second parameter set to the wearable device, the method also includes: when the candidate cell of the communication device is updated, obtaining a new second parameter set of the updated new candidate cell; when the wearable device and the communication device are connected through the short-range wireless communication, after a preset time from the last transmission of the cellular communication parameter set, sending the new second parameter set to the wearable device, so that the wearable device can access the new candidate cell through the new second parameter set when the short-range wireless communication is not available.

[0016] In an embodiment of the present application, the communication effect and importance of the candidate cell are slightly lower than those of the resident cell. Therefore, after the candidate cell is updated, it is not necessary to send the updated cellular communication parameter set to the wearable device immediately, but it can be sent after a preset time interval. In this way, the transmission frequency of the cellular communication parameter set can be reduced, thereby reducing power consumption.

[0017] In one embodiment, the communication device includes multiple candidate cells, and the second parameter set includes a second sub-parameter set corresponding to each candidate cell; sending the second parameter set to the wearable device includes: selecting at least one first target candidate cell from the multiple candidate cells based on the communication quality of each candidate cell; and sending the second sub-parameter set corresponding to the first target candidate cell to the wearable device.

[0018] The locations of the wearable device and the communication device are usually close, and their communication environments are also similar. Therefore, in an embodiment of the present application, when there are multiple candidate cells for the communication device, the communication device can select a candidate cell based on the communication quality of each candidate cell, so as to reduce the power consumption of the wearable device while enabling the wearable device to have better communication quality after accessing the candidate cell.

[0019] In a second aspect, an embodiment of the present application also provides a communication connection method, which is applied to a wearable device, wherein the wearable device can be communicatively connected with the communication device via short-range wireless communication, and when the wearable device and the communication device are connected via the short-range wireless communication, the wearable device puts its own cellular network communication function into a low power consumption state, and receives data of the wearable device during cellular network communication forwarded by the communication device via the short-range wireless communication; the communication connection method comprises: when the wearable device and the communication device are connected via the short-range wireless communication, receiving the cellular communication parameter set transmitted by the communication device via the short-range wireless communication; the cellular communication parameter set is used to access a cellular network; when the short-range wireless communication is not available, accessing the cellular network for communication based on the cellular network communication parameter set.

[0020] In one embodiment, the cellular network communication parameter set includes multiple candidate cells obtained by the communication device searching the network and the corresponding second sub-parameter set; when the short-range wireless communication is not available, accessing the cellular network for communication based on the cellular network communication parameter set, including: when the short-range wireless communication is not available, selecting a second target candidate cell from the multiple candidate cells in the cellular network communication parameter set based on the communication quality of each candidate cell; when the short-range wireless communication is not available, accessing the cellular network for communication based on the second sub-parameter set of the second target candidate cell.

[0021] In an embodiment of the present application, when the wearable device receives the second sub-parameter set of multiple candidate cells, a better candidate cell connection is selected based on the communication quality to obtain a better communication effect while reducing power consumption.

[0022] In a third aspect, an embodiment of the present application provides a communication device, comprising: a first short-range wireless communication module, a first cellular communication module and a processing unit; the communication device is used to access a cellular network for communication through the first cellular communication module; the first short-range wireless communication module is used to connect to a wearable device through short-range wireless communication; the processing unit is used to execute the communication connection method as described in any one of the first aspects based on the first short-range wireless communication module and the first cellular communication module.

[0023] In the fourth aspect, an embodiment of the present application also provides a wearable device, comprising: a second short-range wireless communication module and a second cellular communication module, the second short-range wireless communication module being connected to the second cellular communication module; the second short-range wireless communication module is used to communicate and connect with the communication device through short-range wireless communication; when the second cellular communication module is connected to the communication device through the short-range wireless communication, the second cellular communication module is in a low power consumption state; the second short-range wireless communication module is also used to receive data forwarded by the communication device during the cellular network communication process and communicate; the wearable device executes the communication connection method described in the second aspect through the second short-range wireless communication module and the second cellular communication module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a communication system provided in one embodiment of the present application;

[0026] Figure 2 A flow chart of a communication connection method applied to a communication device provided in one embodiment of the present application;

[0027] Figure 3 A flow chart of a communication connection method applied to a wearable device provided in one embodiment of the present application;

[0028] Figure 4 A flow chart of a communication connection method applied to a communication system provided in one embodiment of the present application;

[0029] Figure 5 A schematic diagram of a communication connection device applied to a communication device provided in one embodiment of the present application;

[0030] Figure 6 A schematic diagram of a communication connection device applied to a wearable device provided in one embodiment of the present application.

[0031] Icons: communication device 100; first short-range wireless communication module 110; first cellular communication module 120; first processing unit 130; wearable device 200; second short-range wireless communication module 210; second cellular communication module 220; second processing unit 230; communication system 300; communication connection device 500; network search module 510; transmission module 520; communication connection device 600; receiving module 610; cellular access module 620. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0033] First, the embodiment of the present application provides a communication device 100, a wearable device 200, and a communication system 300 including the communication device 100 and the wearable device 200. Figure 1 , Figure 1 A connection diagram of a communication system provided in one embodiment of the present application.

[0034] like Figure 1 As shown, in an embodiment of the present application, the communication device 100 includes a first processing unit 130, a first short-range wireless communication module 110 and a first cellular communication module 120, and the wearable device 200 includes a second processing unit 230, a second short-range wireless communication module 210 and a second cellular communication module 220.

[0035] In the communication device 100, the first processing unit 130 is connected to the first short-range wireless communication module 110 and the first cellular communication module 120 respectively, and the first short-range wireless communication module 110 is connected to the first cellular communication module 120. The first processing unit 130 is used to execute the communication connection method applied to the communication device 100 provided in this application. The communication connection method applied to the communication device 100 will be described later and will not be expanded here. The communication device 100 may also include other functional devices, which are not limited here.

[0036] In the embodiment of the present application, the communication device 100 may be a device such as a mobile phone, a tablet computer, a laptop computer, etc. that can simultaneously perform cellular communication and short-range wireless communication. In addition, the communication device 100 may also be other electronic devices configured with a first cellular communication module and a first short-range wireless communication, such as a computer, a single-chip microcomputer device, etc. configured with a first cellular communication module and a first short-range wireless communication, which is not limited here.

[0037] In the wearable device 200, the second processing unit 230 is connected to the second short-range wireless communication module 210 and the second cellular communication module 220, respectively, and the second short-range wireless communication module 210 is connected to the second cellular communication module 220. The wearable device 200 may also include other components, which are not limited here.

[0038] In an embodiment of the present application, the second processing unit 230 of the wearable device 200 is used to execute the communication connection method provided in the present application and applied to one end of the wearable device 200. The communication connection method will be described later and will not be expanded here.

[0039] In an embodiment of the present application, the wearable device 200 may be a smart watch, a smart bracelet, a sports watch, a smart glasses, or the like that is capable of performing both cellular communication and short-range wireless communication.

[0040] In the embodiment of the present application, the first short-range wireless communication module 110 and the second short-range wireless communication module 210 are short-range communication modules with different structures or different models to realize the same short-range wireless communication mode, and the first and second are the distinctions of the short-range communication modules applied on different devices. For example, in the embodiment of the present application, the short-range communication modules used by the first short-range wireless communication module 110 and the second short-range wireless communication module 210 can be Bluetooth communication modules, low-power Bluetooth modules, ultra-wideband modules, WIFI modules, etc., which are not limited here.

[0041] In some embodiments, the first short-range wireless communication and the second short-range wireless communication module 210 can simultaneously implement multiple short-range wireless communication functions. If the first short-range wireless communication and the second short-range wireless communication module 210 can both implement Bluetooth and low-power Bluetooth functions, then in the first short-range wireless communication and the second short-range wireless communication module 210, the same set of antennas and radio frequency units can be time-shared between Bluetooth and low-power Bluetooth.

[0042] Similarly, the first cellular communication module 120 and the second cellular communication module 220 are cellular communication modules that implement the same or different cellular communication modes, and the first and second cellular communication modules are distinguished by being applied on different devices. For example, in an embodiment of the present application, the first cellular communication module 120 and the second cellular communication module 220 can be one of a 6G (6th generation mobile networks, sixth generation mobile communication technology) communication module, a 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) communication module, a 4G (the 4th generation mobile communication technology, fourth generation mobile communication technology) communication module, a 3G (3rd-Generation, third generation mobile communication technology) communication module or a 2G (2-Generation wireless telephone technology, second generation mobile communication technology specification) communication module, and are not limited here.

[0043] In some embodiments of the present application, the wearable device 200 and the communication device 100 have the same eSIM (Embedded-SIM, electronic SIM card) or SIM card number. When the wearable device 200 answers or makes a call and when the short-range wireless communication connection between the wearable device 200 and the communication device 100 is not available, the wearable device 200 can use the second cellular communication module 220 to answer or make a call. When the short-range wireless communication connection between the wearable device 200 and the mobile phone is available, the call is answered or made through the communication device 100.

[0044] In the embodiment of the present application, compared with the communication device 100, the wearable device 200 has higher requirements for power consumption (especially standby power consumption) than the communication device 100, and the wearable device 200 has higher requirements for battery life than the communication device 100. For example, the wearable device 200 is a smart watch, and the communication device 100 is a mobile phone. Compared with the mobile phone, the smart watch has higher requirements for power consumption.

[0045] Next, the communication method of the communication system provided by this application will be described. Figure 1 As shown, in the embodiment of the present application, the communication device 100 and the wearable device 200 can be connected via short-range wireless communication, that is, the first short-range wireless communication module 110 and the second short-range wireless communication module 210 are in communication connection.

[0046] When the wearable device 200 is connected to the communication device 100 via the short-range wireless communication, the cellular network communication function of the wearable device 200 is in a low-power state. In the low-power state, the second short cellular communication module turns off some functions to reduce power consumption. For example, the low-power state includes but is not limited to the second short cellular communication module being in a turned-off state (i.e., not working), or the state of turning off the network search function or the state of measuring the cell function. In the low-power state, the second short cellular communication module can effectively reduce the network search, cell measurement and other operations performed by the wearable device when the short-range wireless communication connection is normal, thereby reducing the power consumption of the wearable device.

[0047] At the same time, when the wearable device 200 is connected to the communication device 100 via short-range wireless communication, the communication device 100 forwards data in the cellular network communication process to the wearable device 200 via short-range wireless communication.

[0048] Since the cellular network communication function of the wearable device 200 is in a low power consumption state, it may not be able to meet the normal cellular communication needs of the wearable device 200, such as making calls, answering calls, accessing the Internet, etc. Therefore, in an embodiment of the present application, if the wearable device 200 needs to perform cellular network communication normally, it can be forwarded by the communication device 100.

[0049] In this embodiment, the communication device 100 normally accesses the communication base station through the first cellular communication module 120, thereby accessing the cellular network. When the wearable device 200 needs to send data, it can first send the data to the communication device 100 through short-range wireless communication, and the communication device 100 then forwards the information to the base station and / or remote device through the cellular network. And, when the wearable device 200 needs to receive data, the communication device 100 first receives the signal from the base station and / or remote device through cellular communication, and then the communication device 100 forwards the wearable device 200 through short-range wireless communication.

[0050] Therefore, when the wearable device 200 is connected to the communication device 100 through short-range wireless communication, it reduces power consumption by putting the cellular network communication function in a low-power state, and then forwards the data in the cellular network communication process through the communication device 100, thereby normally realizing the cellular network communication function.

[0051] Accordingly, in an embodiment of the present application, when the wearable device 200 is unavailable for short-range wireless communication, the second cellular communication module 220 of the wearable device 200 returns to normal, so that the cellular network communication function can operate normally. Among them, the unavailability of short-range wireless communication includes but is not limited to the disconnection of short-range wireless communication, or whether the communication quality of short-range wireless communication is within the range of normal communication. If the communication quality exceeds the range, it is difficult to support better communication, which will also make the communication unavailable. For example, RSSI (Received Signal Strength Indication) is less than a preset value, SNR (Signal-to-Noise Ratio) is less than a preset value, and for example, the bit error rate or frame error rate or packet loss rate is greater than a preset value.

[0052] Next, the present application provides a communication connection method, which can be applied to the communication device 100 as described above.

[0053] See also Figure 2 , Figure 2 A flow chart of a communication connection method applied to a communication device provided in an embodiment of the present application, wherein the communication connection method applied to the communication device includes:

[0054] S110, acquiring a cellular communication parameter set obtained by searching the network.

[0055] The cellular communication parameter set includes parameters required for accessing a cellular network, including but not limited to cell information, PRACH (random access channel) configuration information, frequency information, time slot information, network identification (such as a public land mobile network identity), priority information, etc. The cellular communication module can send an access request to the base station based on the information in the cellular communication parameter set. After receiving the access request, the base station sends an access confirmation message to the cellular communication module of the device, thereby completing the network stationing of the device.

[0056] In an embodiment of the present application, the cellular communication parameter set includes the current resident cell and candidate cells of the communication device 100. The current resident cell refers to the cell of the cellular network currently accessed by the communication device 100, and the candidate cell refers to other cells of the cellular network that the communication device 100 can access.

[0057] Among them, the candidate cells are actively searched by the communication device 100, and the information broadcast by the base station of the cellular network is received. The base station broadcasts the neighboring cell information through the system information block, and the communication device 100 can obtain the information of the candidate cells by receiving the broadcast information. Among them, the system information block includes different types of system information blocks for networks of different generations, which are neighboring cell information, frequency information, priority information, etc. For example, for the 2G network in the cellular network, it includes the system information in the broadcast control channel, etc., the 3G network includes the information of system information block 3 and system information block 5, etc., the 4G network includes the information of system information block 3, system information block 4 and system information block 5, etc., and the 5G network includes the information of system information block 1, system information block 3 and system information block 5, etc. Each system information block (including system information block 1, system information block 3, system information block 4, system information block 5) includes the frequency point, priority, reselection parameters and other information of the neighboring cell, and the communication device 100 can determine the candidate cell through the information obtained.

[0058] In an embodiment of the present application, the communication device 100 actively searches for a network by periodically measuring the current cell and neighboring cells broadcast by the base station, including but not limited to measuring signal strength and signal quality, so as to determine a new cell and update candidate cells based on the measurement results, and perform cell reselection, etc.

[0059] For the above, reference may be made to the relevant contents of cellular communications, which will not be further elaborated here.

[0060] In an embodiment of the present application, the acquired cellular communication parameter set includes parameters required to be used when accessing a cellular network, including but not limited to a first parameter set of a cell in which the communication device 100 is currently stationed and a second parameter set of a candidate cell, and, there may be multiple candidate cells, and the cellular communication parameter set may include second sub-parameter sets corresponding to different candidate cells.

[0061] S120: When the wearable device and the communication device are connected via short-range wireless communication, a cellular communication parameter set is sent to the wearable device 200 via short-range wireless communication.

[0062] As mentioned above, the cellular communication module of the device can access the cellular network for communication through the information in the cellular communication parameter set, and the wearable device 200 can access the cellular network for communication when short-range wireless communication is not available. Therefore, in the embodiment of the present application, the communication device 100 can send a cellular communication parameter set to the wearable device 200 through short-range wireless communication when the wearable device 200 is connected to the communication device 100 through short-range wireless communication, so that the wearable device 200 can access the cellular network for communication based on the cellular network communication parameter set when short-range wireless communication is not available.

[0063] In the process of the device accessing the cellular network, the device needs to perform relatively complex steps such as network search, cell measurement, frequency band scanning, signal detection, synchronization and decoding of base station broadcast channels (not listed in full, refer to the prior art) to obtain the cellular communication parameter set, and then access the cellular network through the cellular communication parameter set. In the embodiment of the present application, when the wearable device 200 is not available for short-range wireless communication, the wearable device 200 can determine the cell to be connected through the cellular network communication parameter set and send an access request. As a result, the wearable device 200 will reduce some of the steps required for accessing the cellular network, such as reducing the process of network search, cell measurement, frequency band scanning, signal detection, synchronization and decoding of base station broadcast channels, effectively reducing the power consumption of the wearable device 200 when reconnecting to the cellular network, and by reducing the time required for the process of connecting to the cellular network, the delay caused by network switching can be reduced, and the user experience can be improved. In addition, since some operations such as network search and cell measurement performed when switching networks are reduced, the power consumption of the wearable device can also be reduced to a certain extent.

[0064] In the embodiment of the present application, the cells connected to the wearable device 200 and the communication device 100 may be the same or different. For example, the cell connected to the communication device 100 is cell 1, and the cell connected to the wearable device 200 may be cell 1 or cell 2. This is not limited here.

[0065] The cell where the communication device 100 is located is usually the cell that is most suitable for the current communication environment of the communication device 100. In most cases, the communication device 100 and the wearable device 200 are located in similar positions and have similar communication environments. Therefore, the current cell where the communication device 100 is located is also likely to be the cell that is most suitable for the wearable device 200.

[0066] In one embodiment of the present application, sending a cellular communication parameter set to the wearable device 200 via short-range wireless communication may include: determining whether the wearable device 200 supports the current network cell; if it is determined that the wearable device 200 supports the current network cell, sending a first parameter set to the wearable device 200, so that the wearable device 200 can access the current network cell through the first parameter set when short-range wireless communication is not available.

[0067] The first cellular communication module 120 and the second cellular communication module 220 may be the same or different. Different cellular communication modules support different types of cellular networks, and different cells also have different types, for example, cells corresponding to 5G networks and cells corresponding to 4G networks. Limited by cost, power consumption and application scenarios, in most cases, the cellular communication modules of the wearable device 200 and the communication device 100 are different, and the wearable device 200 often supports fewer cellular communication protocols than the communication device 100. For 4G networks, cellular communication protocols include LTE Cat.1, LTE Cat.2, LTE Cat.3, LTE Cat.4, LTE Cat.5, LTE Cat.6, LTE Cat.7, LTE Cat.8, etc., and the wearable device 200 may support only a part of them, such as LTE Cat.1.

[0068] Therefore, in this embodiment, it may be that the wearable device 200 and the communication device 100 support different types of cells that can be accessed. Therefore, in an embodiment of the present application, before the communication device 100 sends the current resident device to the wearable device 200, it is necessary to determine whether the wearable device 200 supports the current resident cell.

[0069] In an embodiment of the present application, judging whether the wearable device 200 supports the current network cell may be judging whether the cellular wireless access protocol of the current network cell is supported by the wearable device 200. For example, the wearable device 200 supports 2G and 4G cellular communication protocols; and the cellular wireless access protocol of the current network cell is 4G, then it is determined that the wearable device 200 supports the current network cell. On the contrary, if the cellular wireless access protocol of the current network cell is 5G, then the wearable device 200 does not support the current network cell.

[0070] Accordingly, if the wearable device 200 supports the current cell of the communication device 100, the communication device 100 can send the first parameter set of the current cell to the wearable device 200, so that when short-range wireless communication is not available, the wearable device 200 can access the same cell as the communication device 100 to obtain a better communication effect. At the same time, when only the first parameter set of the current cell is transmitted through short-range wireless communication, and other cell parameter sets are not transmitted, the information transmission between the wearable device 200 and the communication device 100 is reduced, thereby also reducing the power consumption of the wearable device 200 and the communication device 100.

[0071] As the communication environment in which the communication device 100 is located changes, the communication device 100 will reselect the cell, select a cell with better communication effect as the new network cell and access it. In an embodiment of the present application, when the communication device 100 switches from the current network cell to the new network cell, it can also be determined whether the new network cell is supported by the wearable device 200; if the new network cell is supported by the wearable device 200, then when the wearable device 200 and the communication device 100 are connected through short-range wireless communication, the new first parameter set of the new network cell is sent to the wearable device 200, so that the wearable device 200 can access the new network cell through the new first parameter set when short-range wireless communication is not available.

[0072] When the communication environment changes, the communication device 100 may access a new cell. Similarly, when the cell switches, it can also be determined whether the wearable device 200 supports it. If supported, a new first parameter set of the new cell is sent to the wearable device 200.

[0073] In this embodiment, the communication environment may change while the communication device 100 and the wearable device 200 have been communicating via short-distance wireless communication. In this case, the communication device 100 may send a new first parameter set to the wearable device 200 via short-distance wireless communication after accessing the new cell. In other scenarios, short-distance wireless communication between the communication device 100 and the wearable device 200 may not be available. In this case, after the short-distance wireless communication between the communication device 100 and the wearable device 200 is reconnected and becomes available, the communication device 100 sends a new first parameter set to the wearable device 200 via short-distance wireless communication.

[0074] When the communication environment changes, a new first parameter set of a new resident cell is provided to the wearable device 200, so that after the communication environment changes, the wearable device 200 can also access a cell with better communication effect for communication.

[0075] There is also a situation where the wearable device 200 does not support the current network cell of the communication device 100. Therefore, in an embodiment of the present application, when it is determined that the wearable device 200 does not support the current network cell, a second parameter set is sent to the wearable device 200, so that the wearable device 200 can access the candidate cell through the second parameter set when short-range wireless communication is not available.

[0076] The candidate cell is a cell that can be accessed determined by the communication device 100. Although the communication effect of the candidate cell may be poorer than that of the resident cell, the candidate cell still has a better communication effect than other unselected cells. Therefore, when the wearable device 200 does not support the resident cell, the second parameter set of the candidate cell can be sent to the wearable device 200 so that the wearable device 200 can access the cell with better communication effect for communication.

[0077] In some embodiments, when the wearable device 200 supports the resident cell of the communication device 100, the communication device 100 may only send the first sub-parameter set of the resident cell without sending the second sub-parameter set of the candidate cell, thereby reducing the power consumption of the cellular communication parameter set transmission.

[0078] In other embodiments, when the wearable device 200 supports the resident cell of the communication device 100, the communication device 100 may also simultaneously send the first sub-parameter set of the resident cell and the second sub-parameter set of the candidate cell to the wearable device 200, so that the wearable device 200 can select a cell with better communication quality to connect according to its own communication environment, or accelerate the connection between the wearable device 200 and the candidate cell when the resident cell is not suitable.

[0079] Similarly, as the communication environment changes, the candidate cells will also change accordingly. However, compared with the resident cells, the communication effect of the candidate cells will be worse and may not be able to bring the best communication effect to the wearable device 200. Therefore, in some embodiments of the present application, when the candidate cells of the communication device 100 are updated, a new second parameter set of the updated new candidate cells can be obtained; when the wearable device 200 and the communication device 100 are connected through the short-range wireless communication, the new second parameter set is sent to the wearable device 200 after a preset time from the last transmission of the cellular communication parameter set, so that the wearable device 200 can access the new candidate cell through the new second parameter set when short-range wireless communication is not available.

[0080] In this embodiment, the new second parameter set is not transmitted immediately when the candidate cell is updated, but the new second parameter is transmitted after a preset time interval from the last transmission of the cellular communication parameter set, thereby reducing the transmission frequency of the new second parameter set, thereby reducing the power consumption of the cellular communication parameter set transmission. The preset time can be configured according to the type of wearable device 200, application scenario, time requirement for accessing the cellular network, etc. The preset time of different wearable devices 200 can be different. For example, the preset time of some wearable devices 200 is 10s, and the preset time of other wearable devices 200 can be 20s, 100s, etc., which is not limited here.

[0081] There are multiple candidate cells obtained by the communication device 100 through network search, and each candidate cell corresponds to a second sub-parameter set. In some embodiments of the present application, the communication device 100 sends a cellular network communication parameter set to the wearable device 200, which may include one or more second sub-parameter sets of candidate cells. The candidate cell corresponding to each second sub-parameter set in the cellular network communication parameter set can be selected by the communication device 100 from the candidate cells detected by itself through the cell type supported by the wearable device 200.

[0082] For example, the wearable device 200 supports 2G and 4G cellular communication protocols; the cellular wireless access protocol of the current cell is 5G, and the candidate cells are 2G, 3G, 4G, and 5G. Therefore, the communication device 100 selects the first N1 cells from the 2G and 4G candidate cells, where N1 is an integer greater than or equal to 1.

[0083] In one embodiment of the present application, sending the second parameter set to the wearable device 200 may include: selecting at least one first target candidate cell from multiple candidate cells based on the communication quality of each candidate cell; and sending the second sub-parameter set corresponding to the first target candidate cell to the wearable device 200.

[0084] In an embodiment of the present application, the communication quality can be characterized by signal strength, signal quality, etc. For example, according to the signal strength or signal quality corresponding to the candidate cells, N1 candidate cells are selected in order from high to low. At the same time, the communication quality can also be characterized by the priority order corresponding to different types of networks. For example, in some data transmission scenarios, even if the signal quality of the cell of the 5G network is poor, its data transmission rate will still be faster than that of the cell of the 2G network. Therefore, the cell of the 5G network can be configured with a higher priority than the cell of the 2G network. The above method is only an example and is not limited here.

[0085] In addition to calculating the communication quality between itself and each cell, in some embodiments of the present application, the communication device 100 can also calculate the communication quality between the wearable device 200 and each cell based on the communication quality calculation method, and send the calculated communication quality to the wearable device 200, so that the wearable device 200 can know the communication quality between it and each candidate cell, thereby eliminating the need to calculate the communication quality and reducing power consumption.

[0086] In some embodiments of the present application, after determining the candidate cells, a corresponding priority can be configured for each candidate cell, and the priority can be sent to the wearable device 200 together with the second sub-parameter set, so that the wearable device 200 selects the candidate cell in order of priority.

[0087] By sending the second sub-parameter set of multiple candidate cells to the wearable device 200, the wearable device 200 can more easily search for the candidate cells corresponding to the second sub-parameter set, thereby accessing the candidate cells corresponding to the second sub-parameter set to obtain better communication effects. At the same time, compared with sending all candidate cells, the communication device 100 performs screening, which can reduce the workload required by the wearable device 200 to a certain extent, and reduce the amount of data transmission of the cellular communication data set, improve the reliability of data transmission, and reduce the power consumption of data transmission.

[0088] Based on the same inventive concept, the embodiment of the present application also provides a communication connection method applied to a wearable device 200. Among them, the wearable device 200 can be connected to the communication device 100 through short-range wireless communication, and when the wearable device 200 and the communication device 100 are connected through short-range wireless communication, the wearable device 200 puts its own cellular network communication function in a low-power state, and receives the data of the wearable device 200 in the cellular network communication process forwarded by the communication device 100 through short-range wireless communication. The connection relationship between the wearable device 200 and the communication device 100 can refer to the above content, which will not be repeated here.

[0089] See also Figure 3 , the communication connection method applied to the wearable device 200 includes:

[0090] S210, when the wearable device is connected to the communication device via short-range wireless communication, receiving a cellular communication parameter set transmitted by the communication device via short-range wireless communication.

[0091] S220: When short-range wireless communication is unavailable, access the cellular network for communication based on the cellular network communication parameter set.

[0092] As mentioned above, the cellular communication parameter set includes parameters required for accessing a cellular network. In the embodiment of the present application, when short-range wireless communication is unavailable, the wearable device 200 cannot communicate with the cellular network through short-range wireless communication and forwarding of the communication device 100, and therefore needs to re-access the cellular network. While the wearable device 200 is communicating with the wearable device 200 through short-range wireless communication, the wearable device 200 has received a cellular communication parameter set including parameters required for accessing a cellular network. When short-range wireless communication is unavailable, the cellular communication parameter set can reduce steps such as network search, frequency band scanning, signal detection, synchronization and decoding of base station broadcast channels, reduce the time required to re-access the cellular network, and reduce the power consumption generated during this period.

[0093] In some embodiments of the present application, the cellular network communication parameter set includes multiple candidate cells obtained by the communication device 100 through network search and the corresponding second sub-parameter set. In this case, S220 may include: when short-range wireless communication is not available, selecting a second target candidate cell from multiple candidate cells in the cellular network communication parameter set based on the communication quality of each candidate cell; when short-range wireless communication is not available, accessing the cellular network for communication based on the second sub-parameter set of the second target candidate cell.

[0094] In this embodiment, the wearable device 200 can detect the communication quality of each candidate cell, and select one of the candidate cells with the best communication quality or the quality that meets the requirements for access. The wearable device 200 sends an access request to the corresponding candidate cell or base station through a random access channel. After receiving the access request, the base station sends an access confirmation message to the wearable device 200, and the wearable device 200 thus completes the initial network access.

[0095] In some embodiments of the present application, if the cellular network communication parameter set includes a first parameter set of a resident cell of the communication device 100 and a second parameter set of a candidate cell, the first parameter set is preferentially used to access the cellular network.

[0096] In some embodiments of the present application, if the cellular network communication parameter set includes a first parameter set of a resident cell of the communication device 100 and a second parameter set of a candidate cell, the communication quality between the resident cell and each candidate cell can also be determined, and the parameter set corresponding to the optimal or required cell can be selected to access the cellular network based on the communication quality.

[0097] For ease of understanding, the communication connection method applied to the communication system provided in the present application is described here in combination with the aforementioned communication connection method applied to the wearable device 200 and the communication connection method applied to the communication device 100.

[0098] See also Figure 4 , Figure 4 This is a flowchart of a communication connection method applied to a communication system provided in an embodiment of the present application. The functions and connection methods between the wearable device 200 and the communication device 100 in the communication system can refer to the above content and will not be repeated here. The communication connection method applied to the communication system includes:

[0099] S310, the communication device obtains a cellular communication parameter set obtained by searching the network.

[0100] S320, when the wearable device and the communication device are connected via short-range wireless communication, the communication device 100 sends the cellular communication parameter set to the wearable device 200 via short-range wireless communication.

[0101] In one embodiment, the communication device 100 can also determine whether the wearable device 200 supports the current network cell of the communication device 100; if it is determined that the wearable device 200 supports the current network cell, the first parameter set of the current network cell is sent to the wearable device 200.

[0102] In one embodiment, when the communication device 100 switches from the current network cell to the new network cell, the communication device 100 determines whether the new network cell is supported by the wearable device 200; if the new network cell is supported by the wearable device 200, then when the wearable device 200 and the communication device 100 are connected via short-range wireless communication, the communication device 100 sends a new first parameter set of the new network cell to the wearable device 200.

[0103] In one embodiment, when the communication device 100 determines that the wearable device 200 does not support the resident cell, the communication device 100 sends the second parameter set to the wearable device 200, so that the wearable device 200 accesses the candidate cell through the second parameter set when short-range wireless communication is not available.

[0104] In one embodiment, when the wearable device 200 is connected to the communication device 100 via short-range wireless communication, the communication device sends a new second parameter set to the wearable device 200 after a preset time interval from the last transmission of the cellular communication parameter set.

[0105] In one embodiment, the communication device 100 includes a plurality of candidate cells, and the second parameter set includes a second sub-parameter set corresponding to each of the candidate cells. The communication device selects at least one first target candidate cell from the plurality of candidate cells based on the communication quality of each candidate cell; and sends the second sub-parameter set corresponding to the first target candidate cell to the wearable device 200.

[0106] S330: When short-range wireless communication is unavailable, the wearable device accesses the cellular network for communication based on the cellular network communication parameter set.

[0107] In one embodiment, when short-range wireless communication is not available, the wearable device 200 selects a second target candidate cell from multiple candidate cells in a cellular network communication parameter set based on the communication quality of each candidate cell; when short-range wireless communication is not available, the wearable device 200 accesses the cellular network for communication based on the second sub-parameter set of the second target candidate cell.

[0108] Based on the same inventive concept, an embodiment of the present application also provides a communication connection device, which can be applied to the aforementioned communication device, wherein the communication device accesses a cellular network; the communication device and the wearable device can be connected via short-range wireless communication, and when the wearable device and the communication device are connected via short-range wireless communication, the communication device forwards data in the cellular network communication process to the wearable device via short-range wireless communication, and the cellular network communication function of the wearable device is in a low power consumption state.

[0109] See also Figure 5 The communication connection device includes: a network search module 510 and a transmission module 520.

[0110] The network search module 510 is used to obtain a cellular communication parameter set obtained by the network search; the cellular communication parameter set includes parameters required to be used when accessing a cellular network.

[0111] The transmission module 520 is used to send a cellular communication parameter set to the wearable device through short-range wireless communication when the wearable device and the communication device are connected through short-range wireless communication, so that the wearable device can access the cellular network for communication based on the cellular network communication parameter set when short-range wireless communication is not available.

[0112] In one embodiment, the cellular communication parameter set includes a first parameter set of the current network cell of the communication device, and the transmission module 520 is used to determine whether the wearable device supports the current network cell; when it is determined that the wearable device supports the current network cell, the first parameter set is sent to the wearable device, so that the wearable device can access the current network cell through the first parameter set when short-range wireless communication is not available.

[0113] In one embodiment, the transmission module 520 is also used to determine whether the new cell is supported by the wearable device when the communication device switches from the current cell to the new cell; if the new cell is supported by the wearable device, then when the wearable device and the communication device are connected via short-range wireless communication, a new first parameter set of the new cell is sent to the wearable device, so that the wearable device can access the new cell through the new first parameter set when short-range wireless communication is not available.

[0114] In one embodiment, the transmission module 520 is further configured to send a second parameter set to the wearable device when it is determined that the wearable device does not support the resident cell, so that the wearable device can access the candidate cell through the second parameter set when short-range wireless communication is not available.

[0115] In one embodiment, the transmission module 520 is also used to obtain a new second parameter set of the updated new candidate cell when the candidate cell of the communication device is updated; when the wearable device and the communication device are connected via short-range wireless communication, the new second parameter set is sent to the wearable device after a preset time from the last transmission of the cellular communication parameter set, so that the wearable device can access the new candidate cell through the new second parameter set when short-range wireless communication is not available.

[0116] In one embodiment, the communication device includes a plurality of the candidate cells, and the second parameter set includes a second sub-parameter set corresponding to each of the candidate cells; the transmission module 520 is also used to select at least one first target candidate cell from the plurality of the candidate cells based on the communication quality of each candidate cell; and send the second sub-parameter set corresponding to the first target candidate cell to the wearable device.

[0117] Based on the same inventive concept, the embodiment of the present application also provides a communication connection device, which is applied to a wearable device. The wearable device can be connected to the communication device through short-range wireless communication, and when the wearable device and the communication device are connected through the short-range wireless communication, the wearable device puts its own cellular network communication function in a low-power state and receives the data of the wearable device in the cellular network communication process forwarded by the communication device through the short-range wireless communication.

[0118] See also Figure 6 , Figure 6 A schematic diagram of a communication connection device for a wearable device according to an embodiment of the present application. The communication connection device 600 for a wearable device includes: a receiving module 610 and a cellular access module 620 .

[0119] The receiving module 610 is used to receive the cellular communication parameter set transmitted by the communication device through the short-range wireless communication when the wearable device is connected to the communication device through the short-range wireless communication; the cellular communication parameter set includes parameters required to be used when accessing a cellular network.

[0120] The cellular access module 620 is configured to access the cellular network for communication based on the cellular network communication parameter set when the short-range wireless communication is unavailable.

[0121] In one embodiment, the cellular network communication parameter set includes multiple candidate cells obtained by the communication device through network search and the corresponding second sub-parameter set. The cellular access module 620 is used to select a second target candidate cell from multiple candidate cells in the cellular network communication parameter set based on the communication quality of each candidate cell when short-range wireless communication is unavailable; and to access the cellular network for communication based on the second sub-parameter set of the second target candidate cell when short-range wireless communication is unavailable.

[0122] Based on the same inventive concept, an embodiment of the present application also provides a readable storage medium, which stores instructions, and the instructions can be executed by one or more processing units to implement a communication connection method applied to a communication device or a communication connection method applied to a wearable device as provided in the above embodiments.

[0123] The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD (digital video disc)), or a semiconductor medium (e.g., an SSD (Solid State Disk)).

[0124] The communication connection method applied to a communication device or the communication connection method applied to a wearable device, if implemented in the form of a software function module and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0125] In the embodiments provided in the present application, it should be understood that the disclosed method can also be implemented in other ways. The functional modules in the various embodiments of the present application can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part.

[0126] The above embodiments can be freely combined without conflict, and the embodiments obtained by the combination are included in the protection scope of this application.

[0127] The above detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0128] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0129] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0130] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A communication connection method, characterized in that: Applied to a communication device, wherein the communication device is connected to a cellular network; The communication device and the wearable device can be connected via short-range wireless communication, and when the wearable device and the communication device are connected via the short-range wireless communication, the communication device forwards data in the cellular network communication process to the wearable device via the short-range wireless communication, and the cellular network communication function of the wearable device is in a low power consumption state; The communication connection method comprises: Acquire a cellular communication parameter set obtained by searching the network; the cellular communication parameter set includes parameters required to be used when accessing a cellular network; When the wearable device is connected to the communication device via the short-range wireless communication, the cellular communication parameter set is sent to the wearable device via the short-range wireless communication, so that the wearable device accesses the cellular network for communication based on the cellular network communication parameter set when the short-range wireless communication is unavailable.

2. The communication connection method according to claim 1, characterized in that: The cellular communication parameter set includes a first parameter set of a current resident cell of the communication device; The sending the cellular communication parameter set to the wearable device through the short-range wireless communication includes: Determine whether the wearable device supports the current resident cell; When it is determined that the wearable device supports the current resident cell, the first parameter set is sent to the wearable device, so that the wearable device accesses the current resident cell through the first parameter set when the short-range wireless communication is unavailable.

3. The communication connection method according to claim 2, characterized in that: After determining whether the wearable device supports the current resident cell, the method further includes: When the communication device switches from the current cell to a new cell, determining whether the new cell is supported by the wearable device; If the new cell is supported by the wearable device, then when the wearable device and the communication device are connected through the short-range wireless communication, the new first parameter set of the new cell is sent to the wearable device, so that the wearable device can access the new cell through the new first parameter set when the short-range wireless communication is not available.

4. The communication connection method according to claim 2, characterized in that: The cellular communication parameter set also includes a second parameter set of candidate cells obtained by the communication device searching the network; After determining whether the wearable device supports the current resident cell, the method further includes: When it is determined that the wearable device does not support the resident cell, the second parameter set is sent to the wearable device, so that the wearable device accesses the candidate cell through the second parameter set when the short-range wireless communication is unavailable.

5. The communication connection method according to claim 4, characterized in that: After sending the second parameter set to the wearable device, the method further includes: When the candidate cell of the communication device is updated, obtaining a new second parameter set of the updated new candidate cell; When the wearable device is connected to the communication device through the short-range wireless communication, the new second parameter set is sent to the wearable device after a preset time from the last transmission of the cellular communication parameter set, so that the wearable device can access the new candidate cell through the new second parameter set when the short-range wireless communication is not available.

6. The communication connection method according to claim 4, characterized in that: The communication device includes a plurality of candidate cells, and the second parameter set includes a second sub-parameter set corresponding to each candidate cell; The sending the second parameter set to the wearable device includes: Selecting at least one first target candidate cell from the plurality of candidate cells based on the communication quality of each of the candidate cells; Sending a second sub-parameter set corresponding to the first target candidate cell to the wearable device.

7. A communication connection method, characterized in that: Applied to a wearable device, the wearable device can be connected to a communication device through short-range wireless communication, and when the wearable device and the communication device are connected through the short-range wireless communication, the wearable device puts its own cellular network communication function in a low-power state, and receives data of the wearable device in the cellular network communication process forwarded by the communication device through the short-range wireless communication; The communication connection method comprises: When the wearable device is connected to the communication device via the short-range wireless communication, receiving a cellular communication parameter set transmitted by the communication device via the short-range wireless communication; the cellular communication parameter set includes parameters required to be used when accessing a cellular network; When the short-range wireless communication is unavailable, accessing the cellular network for communication based on the cellular network communication parameter set.

8. The communication connection method according to claim 7, characterized in that: The cellular network communication parameter set includes a plurality of candidate cells obtained by the communication device searching the network and a corresponding second sub-parameter set; When the short-range wireless communication is unavailable, accessing the cellular network for communication based on the cellular network communication parameter set includes: In the case where the short-range wireless communication is unavailable, selecting a second target candidate cell from the plurality of candidate cells in the cellular network communication parameter set based on the communication quality of each candidate cell; Access a cellular network for communication based on a second sub-parameter set of the second target candidate cell.

9. A communication device, characterized in that: include: A first short-range wireless communication module, a first cellular communication module and a first processing unit; The communication device is used to access a cellular network for communication through the first cellular communication module; The first short-range wireless communication module is used to connect with the wearable device through short-range wireless communication; The first processing unit is used to execute the communication connection method according to any one of claims 1 to 6 based on the first short-range wireless communication module and the first cellular communication module.

10. A wearable device, characterized in that: include: a second processing unit, a second short-range wireless communication module, and a second cellular communication module, wherein the second short-range wireless communication module is connected to the second cellular communication module; The second short-range wireless communication module is used to communicate with the communication device via short-range wireless communication; The second cellular communication module is in a low power consumption state when connected to the communication device via the short-range wireless communication; The second short-range wireless communication module is also used to receive data forwarded by the communication device during the cellular network communication process and perform communication; The second processing unit executes the communication connection method according to claim 7 or 8 through the second short-range wireless communication module and the second cellular communication module.

11. A communication system, characterized in that: include: The communication device according to claim 9 and / or the wearable device according to claim 10; The communication device accesses a cellular network; The communication device and the wearable device can be connected via wireless short-range communication; when the wearable device and the communication device are connected via the short-range wireless communication, the communication device forwards data in the cellular network communication process to the wearable device via the short-range wireless communication, and the cellular network communication function of the wearable device is in a low power consumption state.

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