WO2022206616A1 - 一种通信系统、第一电子设备和第二电子设备 - Google Patents

一种通信系统、第一电子设备和第二电子设备 Download PDF

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Publication number
WO2022206616A1
WO2022206616A1 PCT/CN2022/083139 CN2022083139W WO2022206616A1 WO 2022206616 A1 WO2022206616 A1 WO 2022206616A1 CN 2022083139 W CN2022083139 W CN 2022083139W WO 2022206616 A1 WO2022206616 A1 WO 2022206616A1
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WO
WIPO (PCT)
Prior art keywords
electronic device
sim card
relay
user equipment
network
Prior art date
Application number
PCT/CN2022/083139
Other languages
English (en)
French (fr)
Inventor
王志峰
龚卫林
贾银元
裘风光
许浩维
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP22778798.3A priority Critical patent/EP4294063A1/en
Publication of WO2022206616A1 publication Critical patent/WO2022206616A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication system, a first electronic device and a second electronic device.
  • user equipment such as a mobile phone
  • a cellular network through a cellular signal transmitted by a base station
  • cellular communication services such as making calls, surfing the Internet, sending and receiving short messages, and the like.
  • the cellular signal transmitted by the base station may be weak or even unable to receive cellular signals due to poor distribution of base stations, mutual interference between multiple base stations, building blockage, and the mobile phone being far away from the base station. , thus affecting the cellular communication service. For example, during a call, problems such as voice interruption, silence, video freeze, or even call interruption occur, and the user experience is not good.
  • the present application provides a communication system, a first electronic device and a second electronic device, which can improve the cellular communication quality of the electronic device.
  • an embodiment of the present application provides a communication system, including a first electronic device and a second electronic device, where a first SIM card is installed on the second electronic device, and the first SIM card stores first SIM card information.
  • the first electronic device establishes a connection with the second electronic device; the first electronic device obtains the first SIM card information; the first electronic device is connected with the network side device according to the first SIM card information, so that the second electronic device enters the relay mode; wherein , in the relay mode, the first electronic device assists the second electronic device to perform cellular communication services related to the first SIM card.
  • the first electronic device is also referred to as a relay device
  • the second electronic device is also referred to as a user equipment.
  • a second electronic device with a stronger cellular signal may be selected to assist the first electronic device to access the network-side device.
  • the link quality of the communication link between the first electronic device and the network-side device is better, which helps to improve packet loss, jitter and delay during cellular communication data transmission. . Therefore, compared with the second electronic device communicating directly with the network side device, the communication quality of the cellular communication can be improved through the first electronic device communicating with the network side device.
  • problems such as call interruption, silence, video freeze, and even call interruption during the call of the second electronic device can be improved.
  • problems such as call interruption, silence, video freeze, and even call interruption during the call of the second electronic device can be improved.
  • the sending and receiving rate of short messages of the second electronic device can be increased, and the delay of the short messages reaching the second electronic device can be improved.
  • the refresh rate of the webpage of the second electronic device can be improved.
  • the first electronic device assists the second electronic device to perform a cellular communication service related to the first SIM card, including: the first electronic device forwards the first SIM card-related service between the network-side device and the second electronic device the cellular communication data, and the second electronic device processes the corresponding cellular communication service according to the cellular communication data.
  • the first electronic device assists the second electronic device to perform a cellular communication service related to the first SIM card, including: the first electronic device interacting with the network side device the cellular communication data related to the first SIM card, and in The corresponding cellular communication service is processed locally according to the cellular communication data.
  • the system provided in this embodiment is not limited to be applied to the scenario where the cellular signal quality of the second electronic device is poor, and can also be applied to the following scenarios:
  • the mobile phone uses the tablet computer to assist the mobile phone to process cellular communication services to save the power of the mobile phone.
  • the first SIM card to be installed on the CPE can be installed on the router, and the CPE can access the first SIM card from the router.
  • the first SIM card can be transferred from outdoors to indoors, avoiding the risk of the SIM card being stolen and damaged due to sunlight.
  • the CPE accesses the network-side device through the information of the first SIM card of the mobile phone, so that the CPE can be a WiFi hotspot without inserting a SIM card, which can prevent users from Maintain one more SIM card.
  • the first electronic device is mobile phone 1 and the second electronic device is mobile phone 2 as an example, after the user leaves mobile phone 2 at home, the first SIM card information of mobile phone 2 can be obtained through mobile phone 1, according to the first SIM card information.
  • the card information accesses the network-side device, and processes the cellular communication service corresponding to the first SIM card on the mobile phone 1, which can prevent the user from missing an incoming call from the mobile phone 2.
  • the smart watch can access the first SIM card information of the mobile phone, and Use the first SIM card information to access the network-side device, and process the cellular communication service corresponding to the first SIM card on the smart watch, so as to avoid missing calls from the mobile phone.
  • the mobile phone can access the first SIM card information of the CPE and perform cellular signal strength detection indoors instead of the CPE to determine the placement position of the CPE.
  • the mobile phone can obtain the information of the first SIM card of the CPE, and use the traffic of the first SIM card in the CPE to surf the Internet to save the traffic of the local SIM card of the mobile phone .
  • the 5G technology can be used Interact and communicate data with network-side devices to improve data transmission speed.
  • the user can also use the relay server to access the network side device according to the first SIM card information of the mobile phone.
  • the mobile phone 2 has two SIM cards (for example, SIM card 1 and SIM card 2) installed at the same time.
  • SIM card 1 and SIM card 2 When the SIM card 1 of the mobile phone 2 is in a call, the mobile phone 2 can automatically control the mobile phone 1 to use the information of the SIM card 2 to access the network side device.
  • the mobile phone 1 if there is an incoming call from the SIM card 2 of the mobile phone 2, the mobile phone 1 can handle the incoming call locally, or notify the mobile phone 2 of the incoming call for processing, so as to avoid the user missing the incoming call from the SIM card 2.
  • the second electronic device when the second electronic device is in the autonomous mode, if the second electronic device satisfies the first preset condition, the second electronic device switches from the autonomous mode to the relay mode to access the network-side device. And/or, when the second electronic device is in the relay mode, if the second electronic device satisfies the second preset condition, the second electronic device switches from the relay mode to the autonomous mode to access the network side device.
  • the autonomous mode the second electronic device is connected to the network side device according to the first SIM card information, directly interacts with the network side device with the cellular communication data related to the first SIM card, and locally processes the corresponding cellular communication data according to the cellular communication data.
  • cellular communication services when the second electronic device is in the autonomous mode, if the second electronic device satisfies the first preset condition, the second electronic device switches from the autonomous mode to the relay mode to access the network-side device.
  • the second electronic device In the autonomous mode, the second electronic device is connected to the network side device according to the first SIM card information, directly
  • the first preset condition is: the cellular signal strength of the second electronic device is lower than the strength threshold; and/or the power of the second electronic device is lower than the power threshold; and/or the second electronic device is in an abnormal cell; and /or, the second electronic device is in an abnormal position; and/or, the second electronic device is connected to a vehicle-mounted Bluetooth device.
  • the second electronic device satisfies the first preset condition, the second electronic device switches from the relay mode to the autonomous mode to access the network side device, which can improve the cellular communication quality of the second electronic device or save power.
  • the second preset condition is: the communication quality between the first electronic device and the second electronic device is lower than the communication quality threshold; and/or the power of the second electronic device is higher than or equal to the power threshold; and/or, the second electronic device Switch from the abnormal cell to the normal cell; and/or, the second electronic device switches from the abnormal position to the normal position; and/or, the second electronic device disconnects the connection with the vehicle-mounted Bluetooth device.
  • the second electronic device satisfies the first preset condition, the second electronic device switches from the autonomous mode to the relay mode to access the network side device, which can reduce the power consumption of the first electronic device.
  • the second electronic device can automatically switch between the relay mode and the autonomous mode according to preset conditions, thereby ensuring the quality of the cellular communication.
  • the second electronic device when the second electronic device is in an idle state, controls the local modem Modem, the Modem protocol stack or the Internet Multimedia Subsystem IMS protocol stack to power off, and controls the first electronic device to pass the first SIM
  • the card information accesses the network side device to switch from the autonomous mode to the relay mode.
  • the second electronic device disconnects the connection with the first electronic device, controls the local Modem, the Modem protocol stack and the IMS protocol stack to power on, and accesses the network side device according to the first SIM card information to switch from the relay mode to the autonomous mode .
  • the second electronic device when the second electronic device is in the service state, controls the local Modem, the Modem protocol stack or the IMS protocol stack to power off, and controls the second electronic device to turn off the user plane protocol stack and the control plane protocol stack.
  • the state information related to the current service in the stack is synchronized to the first electronic device, and the first electronic device accesses the network side device according to the first SIM card information and the state information to switch from the autonomous mode to the relay mode.
  • the second electronic device controls the local Modem, Modem and IMS protocol stack to power on, obtains the status information related to the current service in the user plane protocol stack and the control plane protocol stack of the first electronic device, and according to the first SIM card information And the state information accesses the network side device to switch from the relay mode to the autonomous mode.
  • the first electronic device and the second electronic device are connected through a near field communication technology, a far field communication technology or a physical entity.
  • establishing a connection between the first electronic device and the second electronic device includes: the first electronic device broadcasts a first notification message, where the first notification message is used to notify the first electronic device that the signal relay function is available. After receiving the first notification message, the second electronic device displays a first prompt box, where the first prompt box includes a device selection control. In response to user manipulation of the device selection control, the first electronic device and the second electronic device establish a connection.
  • the first electronic device broadcasting the first notification message includes: when the cellular signal strength of the first electronic device is greater than or equal to a strength threshold, the first electronic device broadcasting the first notification message.
  • the second electronic device displays a first prompt box after receiving the first notification message, including: when the cellular signal strength of the second electronic device is less than the strength threshold, the second electronic device receives the first notification The first prompt box is displayed after the message.
  • acquiring the first SIM card information by the first electronic device includes: the first electronic device acquiring authentication data in the first SIM card information in real time, and the authentication data is used to authenticate when connecting to the network side. right.
  • the first electronic device pre-caches other data except the authentication data in the first SIM card information, and updates the corresponding data according to the aging cycles of different data, so that when the first electronic device processes the cellular communication service, it directly reads from the local Get this other data.
  • the first electronic device pre-caches other data in the first SIM card information except the authentication data, which can improve the rate at which the first electronic device accesses the first SIM card information.
  • a third prompt box is displayed, and the third prompt box is used to prompt the first electronic device to provide signal relay for the second electronic device Serve.
  • the second electronic device displays prompt information, where the prompt information is used to prompt the user to control the second electronic device to approach the first electronic device.
  • the first electronic device transmits a hotspot signal using the cellular data traffic of the first SIM card; after the third electronic device is connected to the hotspot signal, the third electronic device uses the cellular data of the first SIM card through the first electronic device Internet data traffic. In this embodiment, the first electronic device may share the traffic of the first electronic device with the third electronic device.
  • the second electronic device is further installed with a second SIM card, and the second SIM card information is stored in the second SIM card; the second electronic device uses the second SIM card information to connect with the network-side device, and locally Handles cellular communication services related to the second SIM card.
  • the second electronic device can process both the cellular communication service of the first SIM card and the cellular communication service of the second SIM card of the local machine through the first electronic device.
  • the first electronic device is also installed with a third SIM card, and the third SIM card information is stored in the third SIM card; the first electronic device uses the third SIM card information to connect with the network-side device, and locally Handles cellular communication services related to the third SIM card.
  • the first electronic device can not only assist the second electronic device to process the cellular communication service of the first SIM card, but also can process the cellular communication service of the third SIM card of the local machine.
  • an embodiment of the present application further provides a first electronic device, the first electronic device is configured to establish a connection with a second electronic device, the second electronic device is installed with a first SIM card, and the first SIM card is Store the first SIM card information; obtain the first SIM card information; connect with the network side device according to the first SIM card information, so that the second electronic device enters the relay mode; wherein, in the relay mode, the first electronic device assists the first electronic device
  • the second electronic device performs cellular communication services associated with the first SIM card.
  • the first electronic device in the relay mode, is further configured to: forward the cellular communication data related to the first SIM card between the network side device and the second electronic device, and the second electronic device according to the The cellular communication data processing corresponds to the cellular communication service.
  • the first electronic device in the relay mode, is further configured to: interact with the network-side device for cellular communication data related to the first SIM card, and locally process the corresponding cellular communication service according to the cellular communication data .
  • the first electronic device and the second electronic device are connected through a near field communication technology, a far field communication technology or a physical entity.
  • the first electronic device is further configured to: broadcast a first notification message, where the first notification message is used to notify the first electronic device that the signal relay function is available, so that the second electronic device communicates with the first electronic device according to the first notification message.
  • An electronic device establishes a connection.
  • the first electronic device is further configured to broadcast the first notification message when the cellular signal strength of the first electronic device is greater than or equal to the strength threshold.
  • the first electronic device is configured to: acquire authentication data in the first SIM card information in real time, where the authentication data is used for authentication when connecting to the network side; cache the first SIM card information in advance In addition to the authentication data, the corresponding data is updated according to the aging period of different data, so that the first electronic device can directly read the other data locally when processing the cellular communication service.
  • the first electronic device is further configured to: after using the first SIM card information to connect to the network-side device, display a third prompt box, where the third prompt box is used to prompt that the first electronic device is working for the second Electronic equipment provides signal relay services.
  • the first electronic device is further configured to transmit a hotspot signal using the cellular data traffic of the first SIM card; after the third electronic device is connected to the hotspot signal, the third electronic device uses the first electronic device to use the hotspot signal.
  • the first electronic device is further installed with a third SIM card, and the third SIM card information is stored in the third SIM card; the first electronic device is further configured to: use the third SIM card information to communicate with the network-side device connect, and locally handle cellular communication services related to the third SIM card.
  • an embodiment of the present application further provides a second electronic device, where a first SIM card is installed on the second electronic device, and information of the first SIM card is stored in the first SIM card; the second electronic device is configured to: The first electronic device establishes a connection; sends the first SIM card information to the first electronic device, and the first SIM card information is used to connect the first electronic device with the network side device, so that the second electronic device enters the relay mode; wherein, in the relay In the mode, the first electronic device assists the second electronic device to perform cellular communication services related to the first SIM card.
  • the first electronic device forwards the cellular communication data related to the first SIM card between the network-side device and the second electronic device, and the second electronic device processes the corresponding cellular communication data according to the cellular communication data.
  • cellular communication services in the relay mode, forwards the cellular communication data related to the first SIM card between the network-side device and the second electronic device, and the second electronic device processes the corresponding cellular communication data according to the cellular communication data.
  • the first electronic device exchanges cellular communication data related to the first SIM card with the network-side device, and locally processes corresponding cellular communication services according to the cellular communication data.
  • the second electronic device is further configured to: when the second electronic device is in the autonomous mode, if the second electronic device satisfies the first preset condition, the second electronic device switches from the autonomous mode to the relay mode for accessing and/or, when the second electronic device is in the relay mode, if the second electronic device satisfies the second preset condition, the second electronic device switches from the relay mode to the autonomous mode to access the network-side device; wherein, in In the autonomous mode, the second electronic device is connected to the network side device according to the first SIM card information, directly exchanges the cellular communication data related to the first SIM card with the network side device, and locally processes the corresponding cellular communication service according to the cellular communication data .
  • the first preset condition is: the cellular signal strength of the second electronic device is lower than the strength threshold; and/or the power of the second electronic device is lower than the power threshold; and/or the second electronic device is in an abnormal cell; and /or, the second electronic device is in an abnormal position; and/or, the second electronic device is connected to a vehicle-mounted Bluetooth device.
  • the second preset condition is: the communication quality between the first electronic device and the second electronic device is lower than the communication quality threshold; and/or the power of the second electronic device is higher than or equal to the power threshold; and/or, the second electronic device Switch from the abnormal cell to the normal cell; and/or, the second electronic device switches from the abnormal position to the normal position; and/or, the second electronic device disconnects the connection with the vehicle-mounted Bluetooth device.
  • the second electronic device when the second electronic device is in an idle state, the second electronic device is further configured to: control the local modem Modem, the Modem protocol stack or the Internet Multimedia Subsystem IMS protocol stack to power off, and control the first electronic device
  • the device accesses the network side device through the first SIM card information to switch from the autonomous mode to the relay mode; and/or, disconnects the connection with the first electronic device, controls the local Modem, the Modem protocol stack and the IMS protocol stack to power on, And access the network side device according to the first SIM card information to switch from the relay mode to the autonomous mode.
  • the second electronic device when the second electronic device is in the service state, the second electronic device is further configured to: control the local Modem, Modem protocol stack or IMS protocol stack to power off, and power off the local user plane protocol stack and control plane
  • the state information related to the current service in the protocol stack is synchronized to the first electronic device, and the first electronic device accesses the network side device according to the first SIM card information and the state information to switch from the autonomous mode to the relay mode.
  • control the local Modem, Modem protocol stack and IMS protocol stack to be powered on obtain the status information related to the current service in the user plane protocol stack and the control plane protocol stack of the first electronic device, and according to the first SIM card information And the state information accesses the network side device to switch from the relay mode to the autonomous mode.
  • the first electronic device and the second electronic device are connected through a near field communication technology, a far field communication technology or a physical entity.
  • the second electronic device is further configured to: display a first prompt box after receiving the first notification message, the first notification message is used to notify the first electronic device that the signal relay function is available, and the first prompt box A device selection control is included; in response to the user's operation of the device selection control, a connection is established with the second electronic device.
  • the second electronic device is further configured to: when the cellular signal strength of the second electronic device is less than the strength threshold, the second electronic device displays the first prompt box after receiving the first notification message.
  • the second electronic device is further configured to: when the call quality of the second electronic device is lower than the quality threshold, display prompt information, where the prompt information is used to prompt the user to control the second electronic device to approach the first electronic device .
  • the second electronic device is further installed with a second SIM card, and the second SIM card information is stored in the second SIM card; the second electronic device is further configured to: use the second SIM card information to communicate with the network-side device connect and handle the cellular communication traffic related to the second SIM card locally.
  • an embodiment of the present application provides a communication method, the method is applied to a first electronic device, and the method includes the content configured and executed by the first electronic device in the foregoing second aspect.
  • an embodiment of the present application provides a communication method, the method is applied to a second electronic device, and the method includes the content configured and executed by the second electronic device in the foregoing third aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements the communication method shown in the fourth aspect above.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements the communication method shown in the fifth aspect.
  • an embodiment of the present application provides a computer program product, where the program product includes a program that, when the program is run by a device, enables the first electronic device to implement the communication method shown in the fourth aspect above.
  • an embodiment of the present application provides a computer program product, where the program product includes a program that, when the program is run by a device, enables the second electronic device to implement the communication method shown in the fifth aspect.
  • an embodiment of the present application provides a chip, which is applied to a first electronic device.
  • the chip includes a memory and a processor, and the processor executes a computer program stored in the memory to implement the communication method shown in the fourth aspect above. .
  • an embodiment of the present application provides a chip, which is applied to a second electronic device.
  • the chip includes a memory and a processor, and the processor executes a computer program stored in the memory to implement the communication shown in the fifth aspect above. method.
  • FIG. 1 is a schematic diagram of a communication system structure between an existing user equipment and a network side device
  • FIG. 2 is a schematic structural diagram 1 of a communication system to which the communication method provided by the embodiment of the present application is applicable;
  • FIG. 3 is a second schematic structural diagram of a communication system to which the communication method provided by the embodiment of the present application is applicable;
  • FIG. 4 is a schematic interface diagram of a user equipment provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of relay device discovery and connection provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a communication link between a relay device and a user equipment provided by an embodiment of the present application
  • FIG. 7 is a schematic interface diagram of a user equipment provided by another embodiment of the present application.
  • FIG. 8 is a schematic interface diagram of a user equipment provided by another embodiment of the present application.
  • FIG. 9 is a flowchart of a method for accessing a remote SIM card provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram 1 of a SIM card information reading method provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram 2 of a SIM card information reading method provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a data transmission path in a signal relay communication process provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a data forwarding manner of a forwarding device provided by an embodiment of the present application.
  • FIG. 15 is a communication scenario 1 to which the communication method provided by the embodiment of the present application is applicable;
  • FIG. 16 is a second communication scenario to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 17 is a third communication scenario to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 18 is a schematic interface diagram of a user equipment provided by still another embodiment of the present application.
  • 19 is a flowchart of a process of answering an incoming call of a user equipment provided by an embodiment of the present application.
  • 20 is a schematic diagram of an incoming call interface of a user equipment provided by an embodiment of the present application.
  • FIG. 21 is a fourth communication scenario to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 22 is a fifth communication scenario to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 23 is a schematic diagram of a process of selecting a user equipment on a relay device provided by an embodiment of the present application.
  • FIG. 24 is a schematic interface diagram of a user equipment provided by another embodiment of the present application.
  • 25 is a flowchart of a communication method based on a relay device provided by an embodiment of the present application.
  • FIG. 26A is a seventh communication scenario to which the communication method provided by an embodiment of the present application is applicable.
  • 26B is a communication scenario to which the communication method provided by another embodiment of the present application is applicable.
  • FIG. 27 is a communication scenario eight to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 28 is a tenth communication scenario to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 29 is a third structural diagram of a communication system to which the communication method provided by the embodiment of the present application is applicable.
  • FIG. 30 is a schematic diagram of a package setting of a relay server provided by an embodiment of the present application.
  • FIG. 31 is a schematic diagram 1 of a dual-card incoming call scenario provided by an embodiment of the present application.
  • FIG. 32 is a second schematic diagram of a dual-card incoming call scenario provided by an embodiment of the present application.
  • 33 is a schematic diagram 1 of data transmission in a signal relay communication process provided by an embodiment of the present application.
  • 34 is a second schematic diagram of data transmission in a signal relay communication process provided by an embodiment of the present application.
  • 35 is a schematic diagram 3 of data transmission in a signal relay communication process provided by an embodiment of the present application.
  • 36 is a schematic diagram 4 of data transmission in a signal relay communication process provided by an embodiment of the present application.
  • 37 is a schematic diagram 5 of data transmission in a signal relay communication process provided by an embodiment of the present application.
  • FIG. 38 is a schematic diagram 1 of a communication mode between a user equipment and a relay device provided by an embodiment of the present application;
  • FIG. 39 is a second schematic diagram of a communication mode between a user equipment and a relay device provided by an embodiment of the present application.
  • FIG. 40 is a schematic diagram of a communication mode between a relay device and a network-side device provided by an embodiment of the present application;
  • 41 is a schematic diagram of access rights management of a relay device provided by an embodiment of the present application.
  • FIG. 42 is a schematic diagram of cellular service management of a relay device provided by an embodiment of the present application.
  • FIG. 43 is a schematic diagram of a mode switching principle provided by an embodiment of the present application.
  • 45 is a schematic architecture diagram of a user plane and a control plane protocol stack of a user equipment provided by an embodiment of the present application;
  • 46 is a schematic diagram of a multi-network collaboration scenario provided by an embodiment of the present application.
  • FIG. 47 is a schematic diagram of a network convergence scenario provided by another embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX fifth generation
  • 5G fifth generation
  • NR new radio
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • circuit Switched Circuit Switched
  • VoIP voice over long-term evolution
  • VoIPNR voice over new radio
  • VoIP long-term evolution video bearer
  • VoIP over new radio ViLTE
  • new air interface video bearer video over new radio, ViNR
  • evolved packet system fallback evolved packet system fallback, EPS fallback
  • CS fallback based on wireless fidelity ( Wireless fidelity, WiFi) voice calls (voice over WiFi, VoWiFi) or WiFi-based video calls (video over WiFi, ViWiFi) and other calls.
  • user equipment such as a mobile phone
  • a base station performs cellular communication services, such as making calls, surfing the Internet, sending and receiving short messages, and the like.
  • the cellular signal transmitted by the base station may be weak or even unable to receive cellular signals due to poor distribution of base stations, mutual interference between multiple base stations, building blockage, and the mobile phone being far away from the base station. , thus affecting the cellular communication service.
  • the quality of the communication link between the mobile phone and the base station is usually poor, and a large number of call data packets are lost and the delay is relatively long. Large, large jitter, etc., resulting in intermittent voice, silence, video freezes, and even call interruption during the call, and the user experience is poor.
  • the embodiments of the present application provide a communication method to solve the problem of abnormal cellular communication service when the cellular signal on the side of the user equipment is poor to a certain extent.
  • FIG. 2 is a first structural schematic diagram of a communication system to which the communication method provided by the embodiment of the present application is applied.
  • the communication system includes user equipment, relay equipment and network side equipment, and is used to provide a communication mode in which the relay equipment replaces the user equipment to access the network side equipment, which is referred to as the relay mode.
  • user equipment may be a mobile phone, a tablet computer, a notebook computer, a desktop computer, a smart TV, a wearable device (such as a smart watch), a vehicle-mounted device, and a smart home device (such as a smart speaker) , Augmented reality (AR)/virtual reality (VR) devices, ultra-mobile personal computers (UMPC), netbooks, personal digital assistants (personal digital assistants, PDA) and other electronic devices.
  • the relay equipment can be customer premise equipment (CPE), user equipment, or a function module in the cloud server that can provide signal relay services.
  • CPE customer premise equipment
  • user equipment or a function module in the cloud server that can provide signal relay services.
  • the network-side device in this embodiment of the present application may have a device capable of providing random access functions for electronic devices or a chip that can be provided in the device, and the device includes but is not limited to: an evolved Node B (evolved Node B, eNB), Radio Network Controller (RNC), Node B (NB, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), can also be 5G, such as NR, gNB in the system, or, transmission point (TRP or TP), one of the base stations in the 5G system Or a group (including multiple) antenna panels, or, it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU, distributed unit), the network in the future 5G network
  • SIM subscriber identity module
  • the SIM card includes the Skyline app.
  • IMSI international mobile subscriber identification number
  • the IMSI is the unique user identification for the user equipment to access the cellular network.
  • the user equipment can select an electronic device with better cellular signal as the relay device according to the user's instruction, and directly send the local SIM card information to the AP of the relay device through the local application processor (AP), or send the local SIM card information to the AP of the relay device.
  • the card information is sent to the AP of the relay device through the local Modem and the local AP in turn.
  • the Modem of the relay device uses the IMSI in the SIM card information as an identity identifier, instead of the user equipment, to directly access the network side device (eg, the base station).
  • the local Modem of the user equipment does not communicate with the network side equipment.
  • the user equipment refers to an electronic device that provides SIM card information
  • the relay device refers to an electronic device that uses the SIM card information to access the cellular network.
  • the Modem may be physical hardware on the electronic device, or may be a Modem function module instantiated by the physical hardware. When a Modem entity hardware instantiates multiple Modem function modules, the multiple Modem function modules share the Modem entity hardware resources in a time-division multiplexing manner.
  • the user equipment can locally handle cellular communication services. Specifically, the user equipment sends the uplink cellular communication data to the relay equipment, and then the relay equipment forwards it to the network side equipment; in addition, the network side equipment also needs to send the downlink cellular communication data to the relay equipment, and then the relay equipment forwards it to the user equipment .
  • the link quality of the communication link between the relay device and the network side device is better, which helps to improve packet loss, jitter and delay during data transmission. Therefore, compared with the user equipment directly communicating with the network side equipment, the communication quality can be improved by communicating with the network side equipment through the relay equipment. For example, in the case of a call, it can improve the problems of intermittent calls, silence, video freezes, and even call interruptions during the call. For business scenarios such as short messages, it can improve the sending and receiving rate of short messages and improve the delay for short messages to reach user equipment. For business scenarios such as Internet access, the refresh rate of web pages can be increased.
  • the cellular communication service can also be handled by the relay device.
  • the relay device sends the locally generated uplink cellular communication data to the network side device, and receives and processes the downlink cellular communication data sent by the network side device. Since the cellular signal on the relay device side is better, the relay device can also ensure the quality of cellular communication in the process of accessing the cellular network and processing cellular communication services in place of the user equipment.
  • FIG. 4 is a schematic diagram of an interface of a user equipment provided by an embodiment of the application, which involves a process in which the user equipment turns on a signal relay function according to a user instruction. The details are as follows.
  • application icons such as “clock”, “calendar”, “gallery”, “memo”, and “setting” are displayed on the home screen interface of the user equipment. After detecting the user's operation on the "settings” icon, the user equipment may display a setting interface.
  • the setting interface may include options such as user information, “Wirele Local Area Network (WLAN)”, “Bluetooth”, “Mobile Network”, and “More Connections”.
  • WLAN Wireless Local Area Network
  • Bluetooth Wireless Fidelity
  • Mobile Network Wireless Local Area Network
  • Mobile Connections In response to user manipulation of the "Mobile Web” option, the user device displays a mobile web interface.
  • the mobile network interface includes options such as “airplane mode”, “mobile data”, “SIM card management”, “personal hotspot”, and “traffic management”.
  • the user device displays a mobile data interface.
  • the mobile data interface includes switch items such as “Mobile Data”, “Data Roaming”, “Enable 5G”, “APN”, and “Signal Relay” options.
  • the user device displays a signal relay interface.
  • the signal relay interface includes a switch item of "signal relay”, a switch item of "become a relay device”, and an option of "device authorization management”.
  • the "signal relay” switch When the "signal relay” switch is turned on, the user equipment will be able to perform device discovery on the relay device, and after establishing a connection with the relay device, access the cellular network through the cellular signal of the relay device.
  • This embodiment also configures various setting modes for the communication scenario of signal relay. For example, as shown in (f) in Figure 4, after the user turns on the "signal relay" switch item, the user can set various specific working modes of the user equipment and the relay equipment in the signal relay scenario, including the relay equipment on-network mode, Business processing mode, whether to share traffic, relay equipment service mode, etc.
  • the on-network mode of the relay equipment can be set to "full mode” or "user equipment mode".
  • full mode the relay equipment is stationed on the network in its own network mode.
  • user equipment mode the relay equipment is stationed on the network according to the capability of the user equipment (for example, the frequency band that the user equipment can access the cellular network, etc.).
  • the traffic processing mode can be set to "user equipment only” mode, "relay equipment only” mode, or “simultaneous processing” mode.
  • the cellular communication service is only processed on the user equipment side, for example, only the user equipment side is alerted for incoming calls.
  • the cellular communication service is only processed on the relay device side, for example, only the relay device side performs incoming call reminder.
  • the cellular communication service is processed on the relay device side and the user equipment side at the same time, for example, an incoming call reminder is simultaneously performed on the relay device and the user equipment side.
  • the relay device service mode can be set to "best effort mode” or "full effort mode".
  • “best effort mode” when there is an idle Modem on the relay device, the signal relay service is provided for the user equipment, otherwise, the signal relay service is not provided.
  • the “full mode” when there is no idle Modem on the relay device, the existing Modem will be released to provide signal relay service for the user equipment.
  • FIG. 5 is a schematic flowchart of relay device discovery and connection provided by an embodiment of the present application. Specifically, the following steps S501-S505 are included.
  • the relay device broadcasts a first notification message, where the first notification message carries service capability information of the relay device.
  • the first notification message is used to notify other electronic devices that the relay device can provide a signal relay service, and carries service capability information of the relay device and currently detected network environment information.
  • the service capability information is used to indicate the service type supported by the relay equipment.
  • the business capability information may include Remote SIM service (ie, remote SIM card service), voice call service, video call service, data service service, short message service (short messaging service, SMS), global positioning system (global positioning system, GPS) service, etc.
  • the network environment information includes cellular signal strength, quality of experience (QoE) of cellular communication services, and the like. It should be noted that QoE can be understood as user experience or user perception, that is, the terminal user's subjective perception of the service performance provided by the mobile network. Reflects the gap between the quality of the current service and network and user expectations.
  • the relay device may broadcast the first notification message through Bluetooth (bluetooth, BT), WiFi, near field communication (near field communication, NFC) technology, device to device (device to device, D2D) technology; or,
  • the first notification message is broadcast through the server based on the WiFi or cellular data service; alternatively, a peer-to-peer (peer to peer, P2P) connection is established based on the WiFi or cellular data service, and the first notification message is broadcast.
  • the user equipment obtains the first notification message by monitoring.
  • the relay device may first detect the cellular signal strength on the relay device side. If the cellular signal strength is lower than the strength threshold (eg -95dBm (decibel milliwatts)), it means that the relay device cannot guarantee the communication quality with the network side device. Therefore, the relay device does not broadcast the first notification message. If the strength of the cellular signal is greater than or equal to the strength threshold, it means that the relay device can ensure the quality of communication with the network-side device. Therefore, the relay device broadcasts the first notification message. In addition, in this embodiment, the relay device may directly broadcast the first notification message without detecting the strength of the cellular signal.
  • the strength threshold eg -95dBm (decibel milliwatts)
  • the relay device when the relay device broadcasts the first notification message through Bluetooth, the user equipment can receive the first notification message after entering the Bluetooth coverage of the relay device.
  • the relay device may send the first notification message to a specific port of the router in the local area network. Other electronic devices in the local area network receive the first notification message by monitoring the port.
  • the relay device may continuously broadcast the first notification message, and the user equipment monitors the notification message as needed. For example, when the cellular signal strength on the user equipment side is lower than the strength threshold (eg -95dBm), the first notification message broadcast by the relay equipment is monitored.
  • the strength threshold eg -95dBm
  • the user equipment may first broadcast the relay device use request on demand, so as to actively request to use the relay device. For example, when the cellular signal strength on the user equipment side is lower than the strength threshold (eg -95dBm), the relay equipment usage request is broadcast. After receiving the relay device use request, the relay device replies to the user equipment with a first notification message to notify the user equipment that it can provide a signal relay service. With the method provided in this embodiment, the power consumption of the relay device can be reduced and resources can be saved.
  • the strength threshold eg -95dBm
  • the user equipment negotiates the jointly supported service capability with the relay device according to the first notification message.
  • the user equipment After receiving the first notification message, the user equipment needs to conduct service capability negotiation with the relay equipment to determine the service type jointly supported by the user equipment.
  • the relay device supporting Remote SIM service, voice call service, video call service, data service service, SMS, and GPS service as an example, the user equipment needs to determine the services it supports and send the determination result to the relay device.
  • the user equipment and the relay device can authenticate each other through the device account. If the user equipment and the relay device log into the same device account, the authentication is passed.
  • the user equipment and the relay equipment can authenticate each other through a dynamic verification code.
  • the relay device can display a dynamic verification code and send a verification notification to the user equipment.
  • the user equipment may display a verification code input interface.
  • the user equipment After acquiring the verification code input by the user, the user equipment sends the input verification code to the relay device for verification. If the verification code sent by the user is the same as the verification code displayed by the relay device, the authentication is successful. It should be noted that, in this embodiment, after the mutual authentication between the user equipment and the relay equipment is passed, no further authentication is required for subsequent use.
  • the user equipment After the authentication is passed, the user equipment establishes a connection with the relay equipment.
  • the user equipment and the relay equipment can establish a connection according to the mutual Internet Protocol (Internet Protocol, IP) address to form a communication link.
  • Internet Protocol Internet Protocol
  • the communication link between the relay device and the user equipment may be a Bluetooth link, a WiFi link or a data service link.
  • the bluetooth link may be a traditional bluetooth link or a bluetooth low energy (BLE) link.
  • the WiFi link may be a WiFi local area network link, a WiFi direct link, or a WiFi-based server transit link.
  • the hotspot device can be a router, or a user equipment or a relay device.
  • the data service link may be the data service link established by the user equipment with the relay equipment through the SIM card 1, or the data service link established with the relay equipment through the SIM card 2.
  • the user equipment and the relay equipment may be connected in a P2P manner, or may be connected in a server relay manner.
  • the data service link refers to a communication link established between the relay equipment and the user equipment through the base station.
  • the relay device and the user equipment are connected through the server
  • the relay device and the user equipment can respectively establish a connection with the server in different ways.
  • the user equipment can be connected with the server through WiFi
  • the relay equipment can be connected with the server through data services.
  • the user equipment displays a first prompt box, where the first prompt box is used to prompt discovery of a relay device.
  • the user equipment may choose whether to display the first prompt box according to its own cellular signal strength. For example, if the cellular signal strength is greater than or equal to the strength threshold (for example, -95dBm), it means that the user equipment can communicate with the network-side equipment normally and process the cellular communication service normally. Therefore, the user equipment may not display the first prompt box. If the cellular signal strength is less than the strength threshold, it means that the communication quality between the user equipment and the network side equipment cannot be guaranteed. Therefore, the user equipment displays a first prompt box to prompt the user equipment to access the cellular network through the relay device.
  • the strength threshold for example, -95dBm
  • the first prompt box includes prompt information for discovering a relay device, a device selection control for selecting a relay device, a setting control, and the like.
  • the prompt information in the first prompt box may be Stronger signal relay electronics 2".
  • the device selection control is an "authorized use” icon, which is used to select and use the electronic device 2 as a relay device.
  • the setting control may be a "setting” icon, which is used for further setting of the electronic device 2 .
  • the user equipment uses the electronic device 2 as a relay device, and displays, for example, a second prompt box as shown in (b) in FIG. 7 , the second prompt box includes prompt information ""
  • the cellular signal of this unit is from electronic device 2
  • the "Cancel Settings” icon is used to cancel the use of electronic device 2 as a relay device.
  • the prompt information in the first prompt box can be “ Relay device electronics 2" found for stronger signal.
  • the device selection controls may include a "SIM 1 use” icon and a "SIM 2 use” icon.
  • the "SIM card 1 use” icon is used to select the electronic device 2 as the relay device of the SIM card 1; the "SIM card 2 use” icon is used to select the electronic device 2 as the SIM card 2 relay device.
  • the setting control is a "setting" icon, which is used for further setting of the electronic device 2 .
  • the user equipment uses the electronic device 2 as a relay device and displays, for example, a second prompt box as shown in (b) in FIG. 8 , the second prompt box includes prompt information "The cellular signal of the local SIM card 1 is from the electronic device 2", and the "Cancel Settings” icon is used to cancel the use of the electronic device 2 as a relay device.
  • the first prompt box may further include a cancel control, and the user cancels the first prompt box currently displayed by the electronic device 1 .
  • the cancel control can be a "cancel" icon.
  • the second prompt box displayed on the user equipment side may not allow cancellation. After the user equipment exits the relay mode, the second prompt box is automatically canceled.
  • the user's operation on a certain control, option or switch includes clicking, double-clicking, long-pressing, gravity pressing, etc. through a touch operation, and this embodiment does not carry out the specific method for it. limit.
  • the relay device After the user equipment selects the relay device, the relay device needs to access the information stored in the SIM card of the user equipment (referred to as SIM card information) in order to access the cellular network as the user equipment.
  • SIM card information information stored in the SIM card of the user equipment
  • the following describes the process of accessing the SIM card information of the user equipment by the power device.
  • SIM card information usually includes user data and network parameters.
  • the user data is data generated when the user uses the SIM card, such as an address book, a short message (short message, SMS), and the like.
  • Network parameters are data pre-stored in the SIM card by the operator, including IMSI, mobile subscriber international integrated services digital network (MSISDN), and public land mobile network (PLMN) identification code, encryption-related data, authentication algorithms and parameters, integrated circuit card identity (ICCID), IP multimedia subsystem (IMS) public user identity (IMPU), IP Multimedia subsystem private user identity (IMS private user identity, IMPI), DOMAIN (domain name), proxy call session control function address (proxy call session control function address, P-CSCF), fixed dialing numbers (fixed dialing numbers, FDN), SMS parameters (short message center number), forbidden PLMN (forbidden PLMN, FPLMN), high priority PLMN (higher priority PLMN, HPPLMN), HPLMN with access technology (home PLMN, home PLMN) selector (HP
  • the IMSI can be understood as the unique user identifier (Identifier, ID) of the SIM card, which is used to distinguish each user.
  • IMSI includes: mobile country code (MCC), mobile network code (mobile nation code, MNC) and mobile subscriber identification code (mobile subscription identification number, MSIN).
  • MCC mobile country code
  • MNC mobile network code
  • MSIN mobile subscriber identification code
  • the length of MCC is usually 3 digits; the length of MNC is determined by the value of MCC, which can be 2 digits (European standard) or 3 digits (North American standard).
  • MSIN mobile subscription identification number assigned by the operator.
  • the IMSI may be: 460001234567890, where the MCC is 460, the MNC is 00, and the MSIN is 1234567890.
  • MSISDN is also known as mobile number, eg 8613912345678.
  • MSISDN includes country code (country code, CC), national destination code (national destination code, NDC) and customer number (subscriber number, SN).
  • country code country code
  • NDC national destination code
  • customer number subscriber number
  • CC country code
  • SN customer number
  • Different countries have different CCs, for example, China's CC is 86.
  • NDC also known as Network Access Code
  • NDC also known as Network Access Code
  • SNs are assigned to users by the network operator.
  • PLMN is a wireless communication system used to provide land mobile communication services to the public.
  • the PLMN identification code is used to identify different operators, that is, different mobile communication operators usually have different PLMNs.
  • PLMN identification code MCC+MNC, such as 46000, 46001 and so on.
  • the ICCID is also called the card number of the SIM card, and is used to uniquely identify a SIM card, that is, the IC card identification.
  • the IMPU is a user identity for electronic equipment to perform network registration and process IMS services.
  • the IMPU is an identity identifier when an electronic device communicates with other electronic devices and can be published.
  • the IMPU is used for the routing of Session Initiation Protocol (SIP) messages.
  • SIP Session Initiation Protocol
  • IMPI is an identifier used for registration, authentication, authentication and charging in the process of user access to the IMS network, and is not used for addressing and routing of calls.
  • IMPI is a user identity defined by the home network operator and is globally unique.
  • the P-CSCF is the unified entry point for the IMS visited network. All IMS terminal initiated and terminated IMS terminal session messages go through the P-CSCF.
  • Authentication parameters include user key identifier (KI), operator root key (Operator Variant Algorithm Configuration Field, OP), and OPC (authentication key).
  • KI user key identifier
  • OP operator root key
  • OPC authentication key
  • KI is the core of the entire AKA authentication and encryption mechanism, and the process of authentication and encryption is essentially the process of verifying KI.
  • the OP belongs to the operator variable algorithm configuration domain. All users of one operator can use the same OP to distinguish users of other operators. In general, an operator has only one OP. In order to avoid the security risk brought by presetting the same OP on all cards, many operators currently use the pre-installed OPC in the SIM card. After the calculation, it is ensured that different cards are preset with different OPCs, and the operator's OP cannot be calculated from the OPC of a card. Among them, OP and OPC are important parameters for SIM card authentication.
  • the relay device and the user equipment can access the SIM card information of the user equipment through a client/server (Client/Server, C/S) mode. That is, the relay device acts as a client to send a SIM card information acquisition request to the user equipment, and the user equipment acts as a server to send SIM card information to the relay device after receiving the request.
  • C/S client/server
  • FIG. 9 is a flowchart of a method for accessing a remote SIM card provided by an embodiment of the present application, which relates to a process for a relay device to access SIM card information of a user equipment based on a C/S mode, and specifically includes the following steps.
  • the AP of the user equipment sends a first setting command to the Modem of the relay device, which is used to set the Modem of the relay device to the client mode.
  • the AP of the user equipment sends a second setting command to the local Modem, which is used to set the local Modem to the server mode.
  • the first setting command and the second setting command may be sent in the form of an attention (attention, AT) command.
  • this embodiment does not limit the sequence between S901 and S902.
  • the Modem of the relay device sends a SIM card information acquisition request to the AP of the user equipment.
  • the AP of the user equipment converts the SIM card information acquisition request into a form readable by the Modem.
  • the AP of the user equipment sends the converted SIM card information acquisition request to the local Modem.
  • the Modem of the user equipment accesses the SIM card, and sends the SIM card information to the local AP.
  • the SIM card information sent by the Modem of the user equipment to the local AP is in a form readable by the AP. Therefore, the AP of the user equipment needs to convert it into a form readable by the Modem before sending it. Process the Modem of the relay device.
  • the AP of the user equipment converts the SIM card information into a form readable by the Modem.
  • the AP of the user equipment sends the SIM card information readable by the Modem to the Modem of the relay device.
  • OPC In the SIM card information, OPC, IMSI, MSISDN, PLMN, ICCID, IMPU, IMPI, P-CSCF, FDN, SMS, SMSP, FPLMN, HPPLMN, HPLMNwAcT, HPLMNwAcT, OPLMNwAcT, PLMNwAcT and other information can be read by the relay device of.
  • the parameters such as KI, OP and OPC cannot be read by the relay device.
  • the relay equipment sends parameters such as random number (random challenge, RAND) and authentication token (authentication token, AUTN) issued by the network side to the user equipment, so that the The SIM card uses OPC and other authentication operations to generate information such as response message (response, RES), confidentiality key (confidentiality key, CK) and integrity key (integrity key, IK), among which RES is read by the relay device. Send it to the network side device for verification.
  • random number random challenge, RAND
  • authentication token authentication token
  • AUTN authentication token
  • OPC OPC and other authentication operations to generate information such as response message (response, RES), confidentiality key (confidentiality key, CK) and integrity key (integrity key, IK), among which RES is read by the relay device.
  • the relay device may use a real-time reading mode to read all SIM card information of the user equipment. For example, IMSI, PLMN, encryption related data, authentication data, address book, short message, etc.
  • the relay device may simultaneously use a mixed form of real-time reading mode and pre-cached mode to read the SIM card information of the user equipment.
  • the data type read by the relay device in real time includes authentication data
  • the pre-cached data includes IMSI, PLMN, encryption-related data, address book, short message, and the like.
  • the relay device needs to use the data, it can be directly read from the local, which has a faster data reading speed.
  • parameters such as IMSI, MSISDN, PLMN identification code, encryption related data, authentication algorithm and parameters, ICCID, IMPU, IMPI, DOMAIN, and P-CSCF usually do not change.
  • the parameters such as FDN, SMS, SMSP, FPLMN, HPPLMN, HPLMNwAcT, OPLMNwAcT, PLMNwAcT may be updated or modified by the user. Therefore, for the pre-cached data, the relay device can set different aging cycles (also called update cycles) for different types of data. When the pre-cached data reaches the aging cycle, the relay device re-obtains the corresponding data from the user equipment side .
  • the aging period of IMPI and IMPU can be set to be infinite, and it is not necessary to update after caching.
  • Set the aging period of SMS and FDN to 60 minutes, and re-read from the SIM of the user equipment every 60 minutes.
  • the aging period of HPLMNwAcT, OPLMNwAcT, PLMNwAcT, and FPLMN is set to 3 minutes, and is re-read from the SIM of the user equipment every 3 minutes.
  • the encryption-related data and the aging period of the ICCID are set to 0, which cannot be cached, and the relay device needs to read it from the user equipment in real time.
  • FIG. 10 is a schematic diagram 1 of the SIM card information reading mode provided by the embodiment of the present application, which shows the real-time reading mode and the pre-cache mode of the SIM card information.
  • the relay device includes Modem1 and AP1 , and AP1 is provided with a buffer area and a communication module 1 .
  • the user equipment includes Modem2, AP2, SIM card 1 and SIM card 2, and AP2 is provided with a communication module 2. Communication between the communication module 1 and the communication module 2 can be performed by means of Bluetooth, WiFi or data services.
  • Modem1 sends the SIM card information reading request to the communication module 2 through the communication module 1, and then the communication module 2 sends it to the Modem2.
  • Modem2 reads the SIM card information from the corresponding SIM card, and sends the SIM card information to the communication module 1 through the communication module 2, and then the communication module 1 sends the SIM card information to the Modem1.
  • the relay device In the pre-cache mode, after the relay device determines to provide signal relay service for the user equipment, if the relay device supports the Mirror SIM function (that is, the mirror SIM card function), then AP1 will generate a SIM card information acquisition request, and pass it through the communication module. 1.
  • the communication module 2 sends it to Modem2.
  • Modem2 In response to the SIM card information reading request, Modem2 reads the SIM card information from the corresponding SIM card, and sends the SIM card information to the communication module 1 through the communication module 2 .
  • the communication module 1 After receiving the SIM card information, the communication module 1 stores it in the buffer area. When Modem1 needs to use the cache data, it can be read directly from the cache area.
  • the relay device In the pre-cache mode, the relay device can read more data from the user equipment based on one request. Therefore, compared to the relay device reading in real time on demand, reading communication data in the pre-cache mode can reduce the relay device accessing the user equipment SIM. number of cards.
  • FIG. 11 is a schematic diagram 2 of the SIM card information reading method provided by the embodiment of the present application, showing another real-time reading mode and pre-cache mode of SIM card information.
  • the relay equipment includes Modem1 , AP1 and communication module 1
  • the user equipment includes Modem2 , AP2 and communication module 2 .
  • Communication between the communication module 1 and the communication module 2 can be performed by means of Bluetooth, WiFi or data services.
  • Modem1 sends the SIM card information reading request to Modem2 through AP1, communication module 1, communication module 2, and AP2 in sequence.
  • Modem2 reads the SIM card information from the corresponding SIM card, and sends the SIM card information to Modem1 through AP2, communication module 2, communication module 1, and AP1 in sequence.
  • the relay device In the pre-cache mode, after the relay device is determined to provide relay service for the user equipment, if the relay device supports the Mirror SIM function (that is, the mirror SIM card function), then AP1 generates a SIM card information acquisition request, and sends it through the communication module 1 , Communication module 2, AP2 send to Modem2.
  • Modem2 In response to the SIM card information reading request, Modem2 reads the SIM card information from the corresponding SIM card, and sends the SIM card information to AP1 through AP2, communication module 2, and communication module 1 in sequence.
  • AP1 receives the SIM card information, it stores it in the local cache area. When Modem1 needs to use the cache data, it can be read directly from the cache area. Reading the communication data in the pre-cache mode can reduce the number of times that the relay equipment accesses the user equipment to obtain the SIM card.
  • the communication module 1 of the relay equipment can also be set on Modem1
  • the communication module 2 of the user equipment can also be set on Modem2.
  • relay equipment In order for relay equipment to read SIM card information from user equipment, relay equipment and user equipment need to support specific data access protocols, such as remote SIM access profile (rSAP), virtual SIM (virtual SIM, VSIM) access agreement, etc.
  • rSAP remote SIM access profile
  • virtual SIM virtual SIM, VSIM
  • the relay device may access the SIM card of the user equipment based on the rSAP.
  • rSAP includes two parts: rSAP on the client side (ie rSAP-c) and rSAP on the server side (ie rSAP-s).
  • the Modem of the relay equipment needs to support rSAP-c
  • the Modem of the user equipment needs to support rSAP-s
  • the relay equipment and the user equipment are connected to the rSAP-s mode through rSAP-c.
  • the relay equipment does not support rSAP-c, but supports the VSIM access protocol, while the user equipment supports rSAP-s.
  • the relay device when the relay device supports the function of mutual conversion between VSIM and rSAP-c, during the SIM card information reading process, the relay device can convert the VSIM protocol message into an rSAP-c message for sending to the user equipment.
  • the relay device can convert the received rSAP-c message into a VSIM protocol message, so as to realize the connection between the relay device and the user equipment through the VSIM and the rSAP-s mode.
  • the relay device After acquiring the SIM card information of the user equipment, the relay device can use the IMSI in the SIM card information as an identity to access the cellular network, and report its own tracking area update (tracking area updating, tracking area updating, tracking area updating, tracking area updating, tracking area updating, tracking area updating, tracking area updating, tracking area updating, tracking area updating, etc.) to the network side device at preset time intervals. TAU) information to establish a connection with the network side device.
  • TAU tracking area update
  • the corresponding signal strength indicator icon on the relay device can be highlighted, for example, the signal strength indicator icon is displayed in red.
  • cellular communication data can be relayed between the network side device and the user equipment.
  • FIG. 12 is a schematic diagram of a data transmission path in a signal relay communication process provided by an embodiment of the present application.
  • the relay equipment relays cellular communication data between the network side equipment and the user equipment.
  • the relay device communicates directly with the user equipment. Specifically, the user equipment sends the uplink cellular communication data to the relay device, and the relay device sends it to the network side device. The network side device sends the downlink cellular communication data to the relay device, and then the relay device directly sends the data to the user equipment.
  • the relay device and the user equipment can pass through at least one forwarding device. communication.
  • the user equipment may send the uplink cellular communication data from the forwarding device to the relay device, and the relay device then sends it to the network side device.
  • the network side device can send the downlink cellular communication data to the relay device, and then the relay device sends the data to the user equipment through the forwarding device.
  • the process of forwarding cellular communication data by the forwarding device can be referred to as shown in FIG. 13 , and the forwarding device is provided with a data receiving unit and a data forwarding unit.
  • the data receiving unit is configured to receive the downlink cellular communication data sent by the relay equipment and the uplink cellular communication data sent by the user equipment, and send them to the data forwarding unit.
  • the data forwarding unit is used for sending downlink cellular communication data to the user equipment and sending uplink cellular communication data to the relay equipment.
  • FIG. 14 is a schematic diagram of the principle of signal relay communication provided by an embodiment of the present application.
  • the relay device includes an application processor, a voice peer (Vpeer, Vpeer) module, a system bus and a Modem.
  • the relay device may or may not include audio and video peripherals.
  • the application processor includes a network management module, a communication software development kit (SDK), a radio interface layer (RIL), a network card (RDMA) based on remote direct memory access (RDMA) -aware network interface controller, RNIC).
  • the network management module includes a flow control unit and a routing management unit, and the flow control unit is used for managing cellular data traffic, such as statistics of used traffic.
  • the routing management unit is used to manage the transmission path of data.
  • RNIC is responsible for generating RDMA data packets and receiving input RDMA data packets, thereby eliminating redundant memory copy operations in traditional operations and making AP/Modem network card data relocation quickly.
  • the communication SDK includes a communication management unit, a voice transceiver unit, a connection and transmission unit, and a security management unit.
  • the communication management unit is used for managing communication services, and sending downlink cellular communication data received from the network side equipment to the user equipment.
  • the voice transceiver unit is used to receive or send the communication data of the signal relay.
  • the connection and transmission unit is used to manage the establishment of connection with the user equipment and the transmission of data.
  • the security management unit is used to perform authentication in the process of establishing a signal relay connection, and encrypt and decrypt related data in the process of signal relay communication.
  • the RIL is an interface layer for interacting with the Modem. In the user equipment, the RIL is set as the client mode of the remote SIM card. Vpeer is used to process and transmit voice data.
  • the system bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus or the like.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus and so on.
  • Modem includes IMS protocol stack, HiFi module and simulated memory module (the utah simulated memory module, USIMM).
  • the IMS protocol stack is a protocol stack for calls such as VoLTE and VoNR, and is used to complete signaling interaction and media negotiation with the IMS core network.
  • the HiFi module is used for codec, 3A and other algorithm processing of voice packets.
  • USIMM is used to manage SIM card read and write operations.
  • Audio and video peripherals include speakers, receivers, microphones, cameras, and screens. Speakers, also known as “horns”, are used to convert audio electrical signals into sound signals. Electronic devices can listen to music through speakers, or listen to hands-free calls, etc.
  • the receiver also called “earpiece”, is used to convert audio electrical signals into sound signals. When an electronic device listens to a phone call or a voice message, it can listen to the voice by placing the receiver close to the human ear.
  • Microphones also known as “microphones” or “microphones,” are used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can make a sound through the human mouth close to the microphone, and input the sound signal into the microphone.
  • Cameras are used to capture still images or video.
  • the screen is used to display still images or video.
  • the user equipment includes an application processor, a codec (coder-decoder, Codec), a system bus, a Modem, a SIM card, and audio and video peripherals.
  • codec coder-decoder, Codec
  • the application processor of the user equipment also includes a network management module, communication SDK, RNIC and RIL.
  • the network management module includes a virtual device management unit.
  • the virtual device management unit is used to manage virtual devices in the process of signal relay communication, that is, relay devices.
  • the RIL includes a handover management unit for managing the mapping between the RIL and the Modem.
  • RIL is also set as a remote SIM card server to obtain SIM card information from the SIM card and send it to the relay device.
  • Codec is a processing chip for A/D and D/A conversion of audio signals.
  • A/D conversion refers to the encoding process of converting an analog signal (Analog) that can be heard by the human ear into a digital (Digital) signal that can be processed by a computer.
  • D/A is a decoding process that converts the processed digital signal into an analog signal that can be heard by the human ear.
  • SLIMBUS Serial Low-power Inter-chip Media Bus
  • MIPI Mobile Industry Processor Interface
  • relevant communication data includes control signaling and media data (such as call data packets).
  • control signaling and media data such as call data packets.
  • the user equipment After acquiring the call control command input by the user, the user equipment sends it to the local communication SDK module through the RIL module, and the local communication SDK module sends it to the communication SDK module of the relay device.
  • the communication SDK of the relay device calls and drives the Modem to execute control commands through the RIL interface.
  • the call control command includes a call dialing command, a call hanging up command, a call query command, and the like.
  • the relay device When the relay device receives the incoming call notification from the network side device, it will call the communication management module of the communication SDK through the local RIL interface, and send the incoming call notification to the communication SDK module of the user equipment through the communication management module. After receiving the incoming call notification, the communication SDK module of the user equipment calls the RIL interface to notify the incoming call and report it to the application framework layer of the AP, so that the user equipment displays the incoming call interface.
  • the Modem of the relay device receives the downlink cellular communication data packet from the network side device, and the communication SDK module of the relay device obtains the downlink cellular communication data packet from the Modem, and sends the data packet to the user equipment.
  • Communication SDK module The communication SDK module of the user equipment calls the local audio and video peripherals through the RIL interface to play the relevant content carried by the downlink call data packets.
  • the local communication SDK sends the uplink call data packet to the communication SDK module of the relay device, and the communication SDK module of the relay device then transmits the uplink call data packet to the Modem, Modem It is sent to the network side device through the air interface.
  • the transmission path of the control signaling is the same as the transmission path of the control signaling in the above-mentioned call process.
  • the user equipment For the application data generated by the user equipment during the running process, the user equipment first marks the application data, distinguishes different types of application data, and then sends the marked data to the corresponding device or component.
  • the application data is marked as cellular service data, non-cellular service data. Send cellular service data to relay devices, and send non-cellular service data to WiFi network cards, etc.
  • the communication method provided by the embodiment of the present application is exemplarily described below with reference to a specific service scenario.
  • relay devices such as CPE, other mobile phones, etc.
  • the relay device implements cellular signal relay and accesses the cellular network.
  • the near field communication technology may be a communication technology such as WiFi local area network, WiFi P2P, Bluetooth, and NFC.
  • the call when the user is at home, even if he makes a phone call in the bedroom or the basement, the call can be ensured smoothly, and there is no need to move to the balcony to answer the call.
  • it can improve the sending and receiving rate of short messages and improve the delay for short messages to reach user equipment.
  • the refresh rate of web pages can be increased.
  • the cellular signal strength on the user equipment side may also be poor due to the lack of cellular signal coverage or the blockage of buildings.
  • the user device can use the far-field communication technology to establish a connection with the relay device, and use the relay device to access the cellular network.
  • the far-field communication technology includes a P2P connection based on WiFi or data services, or a server relay connection based on WiFi or data services.
  • the relay device and the user device are connected through WiFi P2P, since the two electronic devices are in different gateways, they cannot directly access each other according to the IP address of the other party.
  • the electronic device can use the Network Address Translators (NAT) technology to convert its own IP address and port number into an IP address and port number that can be accessed by the other party, so that the two electronic devices can be successfully connected.
  • NAT Network Address Translators
  • the user when the user is in a restaurant or a shopping mall, he does not need to move to an open-air area to make calls.
  • it can improve the sending and receiving rate of short messages and improve the delay for short messages to reach user equipment.
  • the refresh rate of web pages can be increased.
  • the power of the user equipment is low (for example, the power is lower than 20%) and it is inconvenient to charge.
  • the user or relatives and friends around the user carry other electronic devices with cellular communication functions (such as tablet computers, mobile phones, notebook computers, etc.)
  • the device accesses the cellular network.
  • a first prompt box may be displayed to prompt the user to use the relay device.
  • the prompt box may include prompt information for finding relay devices, device selection controls for selecting relay devices, setting controls, and the like.
  • the prompt information in the first prompt box may be “low battery, whether to use the relay device electronic device 2”.
  • the device selection control is an "authorized use” icon, which is used to select and use the electronic device 2 as a relay device.
  • the setting control may be a "setting" icon, which is used for further setting of the electronic device 2 .
  • the user equipment uses the electronic device 2 as a relay device, and displays, for example, a second prompt box as shown in (b) in FIG. 18 , the second prompt box includes prompt information " The cellular signal of this unit is from electronic device 2", and the "Cancel Settings” icon is used to cancel the use of electronic device 2 as a relay device.
  • the relay equipment can stand on the network and stand by, which can not only save the power of the user equipment, but also can process the cellular communication service normally, without missing calls or SMS messages.
  • the user equipment may also set the service processing mode of this relay communication to “relay device only”, and transfer the cellular communication service to the relay device for further processing. conservee the power of the user's device.
  • the service processing mode of the signal relay may be set to "simultaneous processing", that is, both the user equipment and the relay equipment can process.
  • traffic sharing can be turned off.
  • the service processing mode in the signal relay process is the "user equipment only" mode.
  • the relay device acts as an intermediate device to forward data between the user equipment and the network side device, and the actual processing device of the cellular communication service is the user equipment.
  • the following describes the process of processing the cellular communication service by the user equipment as the service processing device.
  • FIG. 19 shows the process of answering a call by the user equipment as a service processing device, which specifically includes the following steps S1901-S1909.
  • the network side device sends an incoming call notification to the relay device.
  • the relay device sends an incoming call notification to the user equipment.
  • the user equipment displays an incoming call interface.
  • the incoming call interface includes a user image, an incoming call number, an answer control, a reject control, and the like.
  • the user equipment in response to the user's operation on the call answering control, the user equipment sends a call answering notification to the relay device.
  • the relay device sends a call answering notification to the network side device.
  • the network side device sends a downlink call data packet to the relay device.
  • the relay device sends a downlink call data packet to the user equipment.
  • the user equipment sends an uplink call data packet to the relay equipment.
  • the relay device sends an uplink call data packet to the network side device.
  • the user equipment can not only access the network side equipment through the cellular signal of the relay equipment to improve the call quality, but also can answer the phone locally, which has a better user experience.
  • Scenario 4 Separation of CPE and SIM card, and transfer of SIM card from outdoor to indoor
  • the user can place a CPE outdoors, and use the CPE as a WiFi hotspot to provide Internet access services for user equipment.
  • a configuration SIM card is installed on the CPE
  • the user equipment can use the traffic of the SIM card on the CPE after connecting to the CPE, and indirectly access the cellular network through the CPE.
  • the SIM cards installed on some CPEs are exposed on the outer surface of the CPE shell.
  • the SIM card on the CPE usually needs to be installed and fixed with screws. For the CPE that has been installed outdoors, it is very inconvenient to remove the SIM card.
  • the user can install a SIM card on the router at home, and connect the router (user equipment) and the CPE (relay equipment) through a network cable, so that the CPE can read the SIM card from the router through the network cable.
  • information and access the cellular network based on the SIM card information.
  • the reading method of the SIM card reference may be made to the foregoing description, which is not repeated in this embodiment.
  • the manner in which the CPE accesses the cellular network according to the SIM card information please also refer to the existing CPE, which will not be repeated in this embodiment.
  • the SIM card on the outdoor CPE can be transferred to the indoor device, avoiding the risk of the SIM card being stolen and damaged due to sunlight.
  • it is more convenient to remove and install a SIM card from an indoor router than from a CPE installed outdoors.
  • a SIM card configured with traffic is usually required to be installed on the CPE to provide Internet access services for the user equipment. Therefore, under normal circumstances, in order to maintain the normal operation of the CPE, the user needs to maintain an additional SIM card for the CPE, and pay a corresponding fee every month, which consumes the user's energy.
  • the CPE may not install the SIM card, but establish a connection with the user equipment (such as a mobile phone) through a WiFi hotspot, access the SIM card information of the user equipment through the Remote SIM technology, and use the SIM card of the user equipment Information to register and access the cellular network.
  • the user equipment such as a mobile phone
  • the Remote SIM technology access the SIM card information of the user equipment
  • the remote SIM technology uses the SIM card of the user equipment Information to register and access the cellular network.
  • other electronic devices actually consume the data of the SIM card of the user equipment during the process of using the CPE to surf the Internet.
  • the user does not need to maintain an additional SIM card for the CPE, which saves the user's energy.
  • the user equipment can set the relay equipment network resident mode to full mode in the interface shown in (f) in FIG.
  • the user equipment can also set the service processing mode to "only user equipment", so as to process cellular communication services on the user equipment side.
  • a mobile phone as a WiFi hotspot for use by other indoor electronic devices, it can reduce the power consumption of the mobile phone and prevent the user from frequently charging the mobile phone.
  • Scenario 6 The mobile phone is left at home, and the phone is not missed.
  • the relay device In daily life, users may forget or be inconvenient to carry their mobile phones when they go out. At this time, if the user wants to answer the call of the mobile phone or make a call using the mobile phone number, another electronic device can be used as the relay device of the mobile phone to access the network-side device and handle cellular communication services on behalf of the user equipment. That is to say, after acquiring the SIM card information of the user equipment, the relay device accesses the cellular network instead of the user equipment, and processes cellular communication services.
  • FIG. 23 is a schematic diagram of a process of selecting a user equipment on a relay device according to an embodiment of the present application, which involves a process in which the relay device searches and determines the user equipment according to a user instruction.
  • the electronic device in the signal relay interface, in response to the user's operation of turning on the "become a relay device" switch, the electronic device becomes a relay device. After the electronic device becomes the relay device, it can start broadcasting the first notification message described above, so that other electronic devices can discover the relay device.
  • the relay device can also display the option “Search User Equipment” below the “That Relay Device” switch item, so as to actively search for available user devices (referred to as available devices) according to user instructions. .
  • the user equipment displays an available equipment interface such as shown in (c) of FIG. Electronic equipment 4.
  • the relay equipment establishes a connection with the electronic equipment 2 and processes cellular communication services instead of the electronic equipment 2 .
  • the relay device and the user equipment may be connected through a cloud server based on WiFi or cellular data services, or may be connected through P2P based on WiFi or cellular data services.
  • the relay device may search for the proxy device (ie, user equipment) through the cloud server.
  • the proxy device ie, user equipment
  • some users may have multiple electronic devices at the same time, such as mobile phones, smart watches, tablet computers, etc., and each electronic device establishes a connection with the corresponding cloud server by logging in to the device account. If these electronic devices log into the same device account, the cloud server considers that these electronic devices belong to the same user. For the electronic devices of the same user, the cloud server can share data among the electronic devices. Based on this, when the relay device detects that the user operates the "search for user device" option, it can query other electronic devices belonging to the same user as the relay device through the cloud server, such as electronic device 2, electronic device 3, and electronic device 4.
  • the relay equipment After the relay equipment establishes a connection with the user equipment, it can access the SIM card information of the user equipment, and access the network side equipment according to the SIM card information, and process the cellular communication service on behalf of the user equipment.
  • the relay device may display a third prompt box to remind the user that it is currently providing signal relay services for other electronic devices.
  • the third prompt box includes prompt information and a cancel control.
  • the prompt information may be "this machine is providing signal relay service electronic equipment 2 for the following equipment".
  • the cancel control can be a "cancel authorization" icon, which is used to cancel the signal relay service currently provided by the relay device.
  • FIG. 25 is a flowchart of a communication method based on a relay device provided by an embodiment of the present application.
  • the service processing mode of the signal relay is "relay equipment only", which involves the process that the relay equipment borrows the SIM card information of the user equipment to access the network side equipment and processes the cellular communication service of the user equipment.
  • the relay device sends a SIM card information acquisition request to the user equipment.
  • the relay device can send the SIM card information acquisition request to the user equipment through the cloud server, or can send the SIM card information acquisition request to the user equipment through the WiFi/cellular service data P2P link between the relay device and the user equipment .
  • the user equipment receives SIM card information sent by the relay equipment.
  • the user equipment can send SIM card information to the relay equipment through the cloud server, and can also send SIM card information to the user equipment through the WiFi/cellular service data P2P link between the relay equipment and the user equipment.
  • the relay device establishes a connection with the network side device according to the SIM card information.
  • the network side device sends an incoming call notification to the relay device.
  • the relay device locally displays an incoming call interface according to the incoming call notification.
  • the relay device in response to the answering operation of the user, sends an answering notification to the network side device.
  • the network side device sends a downlink call data packet to the relay device, and plays the downlink call audio/video according to the downlink call data packet.
  • the relay device collects the audio/video of the uplink call, forms the data packet of the uplink call according to the audio/video of the uplink call, and sends the data packet of the uplink call to the network side device.
  • the relay equipment needs to have the IMS protocol stack and voice codec capabilities. Based on this, after the relay device receives the downlink call data packet in the form of RTP, it can parse it into a PCM stream and play it locally. And, the PCM code stream of the upstream voice data is collected, and it is directly converted into an uplink call data packet in the form of RTP, or the PCM code stream is encoded and converted into an uplink call data packet in the form of RTP. In addition, for calls such as CS and CS fallback, the relay equipment needs to have the CS protocol stack and voice codec capabilities. Exemplarily, the relay device may be a mobile phone, a tablet computer, a smart watch, or the like.
  • the user can also use the SIM card information of the user equipment on the relay device side to make calls, send and receive short messages, surf the Internet, and the like.
  • the SIM card information of the user equipment can be obtained through other electronic devices, and the user equipment can access the cellular network on behalf of the user equipment and handle cellular communications such as calls, text messages, and Internet access. business, avoid missing calls, and have a better user experience.
  • Scenario 7 When the user wears a smart watch and runs outdoors, he does not miss the phone call
  • call forwarding has problems such as long delay (generally around 30s), users cannot make calls using the mobile phone number on the smart watch side, and operators need to charge forwarding fees to the transfer party (ie mobile phone user) of the call forwarding. , the user experience is not good.
  • the user can use the mobile phone as the user equipment and the smart watch as the relay device, so that the smart watch can replace the mobile phone to access the cellular network and process the cellular communication service.
  • the smart watch can establish a connection with the mobile phone through the cellular data service.
  • the smartwatch can also be connected to the mobile phone via WiFi connection, Bluetooth, etc.
  • the smart watch can be connected to the electronic device 1 through Bluetooth, and then connected to the mobile phone through WiFi of the electronic device 1 .
  • SIM card 1 SIM card 1
  • SIM card 2 SIM card 2
  • the relay device can obtain both the information of SIM card 1 and the information of SIM card 2, thereby simultaneously using SIM card 1 and SIM card 2 instead of user equipment Access the cellular network and process cellular communication services on the relay device side. Based on this, whether it is an incoming call from the SIM card 1 of the user equipment or the incoming call from the SIM card 2, the user can answer the call on the relay device side. In addition, the user can also use the SIM card 1 and the SIM card 2 on the relay device side to handle other cellular communication services, such as making calls, sending text messages, and surfing the Internet.
  • the user equipment when the SIM card 2 of the mobile phone calls, the user equipment can notify the smart watch of the incoming call based on the current communication link between the mobile phone and the smart watch, and the smart watch displays the call interface.
  • the network side device sends the downlink call data to the mobile phone, and then the mobile phone sends it to the smart watch, and the smart watch plays it.
  • the smart watch locally collects the uplink call data, and sends the uplink call data to the user equipment, and then the user equipment sends the uplink call data to the network side equipment.
  • a SIM card is installed in the CPE, and the user needs to select a location with a better cellular signal to place the CPE indoors to ensure the cellular communication quality of the CPE.
  • the way for users to select the location of CPE is to select multiple locations indoors for cellular signal strength detection, check the cellular signal strength in the corresponding CPE management application (such as Smart Life) of the mobile phone, and manually determine the strength of a cellular signal.
  • the CPE usually needs to be plugged in to work. Due to the limitation of the length of the power cord and the cumbersomeness of the CPE, the CPE is not easy to move, which affects the choice of the placement location of the CPE.
  • the user can refer to FIG. 27 , set the portable user equipment (such as a mobile phone) as a relay device, and determine the CPE as the user equipment, and connect with the CPE through the near field communication technology.
  • the mobile phone can access the SIM card information in the CPE through the Remote SIM technology, and access the cellular network through the SIM card information.
  • the user needs to set the relay equipment on-network mode to the user equipment mode, so that the mobile phone can freely move indoors instead of the CPE and determine the placement position of the CPE according to the on-network mode of the CPE.
  • the mobile phone can still display the strength of the CPE cellular signal through a CPE management application (eg, Smart Life) for the user's reference.
  • the user can directly determine the placement position of the CPE according to the current signal strength of the mobile phone.
  • the user does not need to move the CPE, but the process of determining the placement position of the CPE by moving the mobile phone is convenient for operation.
  • the detection result of the method provided in this embodiment is more accurate. This is because the mobile phone and the CPE have different communication rules such as frequency bands and Carrier Aggregation (CA). Therefore, the cellular signal strength of the mobile phone cannot accurately represent the cellular signal strength of the CPE.
  • CA Carrier Aggregation
  • the SIM card in the CPE usually handles the mobile broadband (MBB) data package, and the package fee is much cheaper than the mobile phone SIM card package.
  • MBB mobile broadband
  • the CPE is used as the user equipment, and the mobile phone is used as the relay device to access the SIM card information of the CPE through the Remote SIM technology, and the cellular network is accessed through the SIM card of the CPE, and the Internet access is performed. and other cellular communication services.
  • the mobile phone uses the CPE SIM card to access the Internet, the traffic of the CPE SIM card is consumed, which can save the traffic of the mobile phone SIM card.
  • user equipments of multiple family members can use the CPE to access the Internet by using its traffic, which saves the cost of Internet access for the entire family.
  • Scenario 10 Improve cellular communication capabilities
  • Different user equipment may have different cellular communication capabilities.
  • mobile phone 1 supports up to the fifth generation mobile communication technology (5th generation mobile networks, 5G), while mobile phone 2 supports up to the fourth generation mobile communication technology (4th generation mobile networks). , 4G).
  • 5G fifth generation mobile communication technology
  • 4th generation mobile networks 4th generation mobile networks
  • the user can use the signal relay method to use the mobile phone 1 as the relay device of the mobile phone 2, so that the mobile phone 2 can use the 5G communication capability of the mobile phone 1 to perform cellular communication services.
  • the user equipment needs to set the signal relay network mode to the full mode.
  • the mobile phone 1 accesses the SIM card information of the mobile phone 2 through the Remote SIM technology, it can pass the mobile phone 1 itself.
  • the communication capability uses the SIM card information of the phone 2 to access the cellular network.
  • the mobile phone 2 sends the uplink cellular communication data to the mobile phone 1 through the communication link between the mobile phone 1 and the mobile phone 2, and then the mobile phone 1 sends it to the network side device through the 5G technology.
  • the mobile phone 1 sends the data to the mobile phone 2 through the communication link between the mobile phone 1 and the mobile phone 2, and the mobile phone 2 processes it.
  • the mobile phone 1 and the mobile phone 2 may be connected through a communication link such as a WiFi local area network link, a WiFi P2P link, and a Bluetooth link, which is not limited in this embodiment.
  • the relay device may also be a holster with a communication function.
  • the appearance of the leather case is similar to a mobile phone protective case, and the inner surface of the case is provided with a SIM card slot, a communication module and other communication-related accessories.
  • the SIM card in the holster can be used to make calls and send and receive text messages.
  • the user when the cellular communication capability of the holster is stronger than that of the mobile phone, the user can also connect the holster with the mobile phone, use the holster as a relay device, and use the mobile phone as the user equipment, so that the mobile phone can Improve your phone's cellular communication capabilities with the ability of the holster to access cellular networks.
  • the leather case may not be provided with a SIM card slot, which is not limited in this embodiment.
  • a peripheral component interconnect express (PCIe) interface can be used between the leather case and the mobile phone.
  • PCIe peripheral component interconnect express
  • USB universal asynchronous receiver/transmitter
  • I2S integrated circuit built-in audio
  • SLIMBUS serial peripheral interface
  • SDIO secure digital input and output
  • SPI serial peripheral interface
  • GPIO general-purpose input/output
  • controller area network controller area network, CAN
  • the cellular communication capability of the user equipment can be improved without changing the hardware facilities of the user equipment.
  • the server can also be used as the relay device. Please refer to Figure 29 for details.
  • FIG. 29 is a third schematic structural diagram of a communication system to which the communication method provided by the embodiment of the present application is applied, which relates to a specific manner in which a user equipment uses a server as a relay device to access a network side device.
  • a server serving as a relay device is referred to as a relay server, and a relay server can serve as a relay device for multiple user equipments at the same time, access the SIM card information of the user equipment, and access the network side according to the SIM card information. equipment.
  • the user equipment and the relay server can be connected through cellular data services or through WiFi.
  • the user can establish a connection with the relay server by purchasing a service package provided by the relay server, and control the type of signal relay service provided by the relay server for the user equipment.
  • the user can click the "Global Cloud Cat" option in the Tiantiantong application interface shown in (a) of FIG. 30 to enter the package purchase interface shown in (b) of FIG. 30 .
  • the package purchase interface different packages correspond to different services.
  • package 1 provides a 500-minute signal relay service, and the service is limited to call services.
  • Package 2 provides a 1000-minute signal relay service, which supports calls, text messages, and Internet access services. Users can choose packages according to their needs to control the services provided by the relay server.
  • different regions are set with different relay servers.
  • the user can also select the region where the user equipment is located in the package purchase interface, for example, select city A in country A, so that the user can The device is connected to a relay server that is closer.
  • the relay server After the relay device is connected to the user equipment, the SIM card information of the user equipment can be obtained. After acquiring the SIM card information of the user equipment, the relay server may access the network side device by using the first method or the second method.
  • Mode 1 When the relay server is configured with a cellular communication unit, the relay device can access the network side device through the cellular communication module according to the SIM card information of the user equipment.
  • Method 2 The relay server can access the network side device through WiFi according to the SIM card information of the user equipment.
  • the communication method between the relay server and the network side device please refer to the related content of the electronic device using the NON-3GPP network (ie, non-3GPP network) to access the network side device, which will not be repeated in this embodiment.
  • SIM card 1 and SIM card 2 are usually unable to receive incoming calls, so the user may miss the incoming call from the SIM card 2.
  • SIM card 1 such as SIM card 1
  • SIM card 2 is usually unable to receive incoming calls, so the user may miss the incoming call from the SIM card 2.
  • the user equipment can automatically control another SIM card (such as SIM card 2) to enter the relay mode, and pass The relay equipment uses the information of SIM card 2 to stay on the network. In this process, if the SIM card 2 calls, the relay device can remind the incoming call locally, and can also control the user equipment to remind the incoming call, as shown below.
  • the incoming call reminder interface can be displayed on the relay device so that the user can answer it.
  • the call notification can be sent to the user equipment, and the user equipment will display the call reminder interface. Based on this, the user can choose to hang up Mr. Wang's phone and answer Ms. Li's phone on the user equipment, or hold Mr. Wang's phone to answer Ms. Li's phone.
  • the relay device needs to relay and transmit call data packets between the network side device and the user equipment.
  • FIG. 33 is a schematic diagram of data transmission in a signal relay communication process provided by an embodiment of the present application.
  • the relay device transfers various cellular communication data between the network side device and the user equipment, including control signaling, short messages, and uplink and downlink call data packets.
  • the network-side device and the user equipment transmit call data packets based on the real-time transport protocol (RTP). Therefore, the downlink call data packets sent by the network-side device to the relay device are usually RTP data. Packet, RTP data packets are stored in adaptive multi rate narrowband (adaptive multi rate-narrow band, AMR-NB), adaptive multi rate wideband (adaptive multi rate-narrow band, AMR-WB), enhanced voice service (enhance voice services (EVS), Opus, EVS Codec Extension for Immersive Voice and Audio Services (IVAS) and other encoding formats.
  • AMR-NB adaptive multi rate narrowband
  • AMR-WB adaptive multi rate wideband
  • EVS enhanced voice service
  • EVS EVS Codec Extension for Immersive Voice and Audio Services
  • the user equipment usually plays audio information according to the PCM code stream, and needs to convert the voice data in the AMR-NB, AMR-WB, EVS, Opus, IVAS and other formats in the RTP data packet into the PCM code stream before playing.
  • the user equipment needs to convert the upstream PCM stream into voice data in AMR-NB, AMR-WB, EVS, Opus, IVAS and other formats, and then encapsulate it into an RTP data packet before sending it to the network side device.
  • signaling is transmitted between the network-side device and the user equipment based on a session initiation protocol (session initiation protocol, SIP).
  • SIP session initiation protocol
  • the SIP signaling sent by the network side device it needs to be converted into a corresponding call control command, so that the user equipment can perform corresponding actions according to the control signaling.
  • the call control command generated by the user equipment it needs to be converted into SIP signaling before it can be sent to the network side device.
  • the call control command may be IRING, CLCC, CALLSTATE, CHLD, APDS and so on.
  • IRING is a command to report the ringing state
  • CLCC is a command to query the call state
  • CALLSTATE is a command to report the call state
  • CHLD is a command to perform a HOLD operation
  • APDS is a command to dial.
  • the relay equipment when the relay equipment has the IMS protocol stack and voice codec capabilities, it can perform mutual conversion between RTP data packets and PCM code streams, as well as SIP signaling. and conversion of call commands.
  • the relay device does not have this capability, the user equipment needs to perform the above operations. Therefore, according to the different capabilities of the relay devices, the cellular communication data can be forwarded in different ways. The details are as follows.
  • Mode 1 The relay device has IMS protocol stack and voice codec capabilities.
  • the network side device and the relay device transmit signaling through SIP signaling.
  • the relay device can convert the downlink SIP signaling into specific After receiving the call control command, send the call control command to the user equipment.
  • the user equipment can also send the locally generated uplink call control command to the relay device, which is then converted into SIP signaling by the processing device and sent to the network side device.
  • the relay device can first convert the voice data in the RTP data packet into a pulse code modulation (PCM) code stream, and then send the PCM code stream. to the user device for playback.
  • PCM pulse code modulation
  • the user equipment can collect the PCM code stream corresponding to the uplink cellular communication data, and send the PCM code stream to the relay device.
  • the relay device converts the PCM code stream into RTP data packets and sends them to the network side device.
  • the relay device when the relay device has the IMS protocol stack and the voice codec capability, and the user equipment also has the IMS protocol stack and the voice codec capability.
  • the relay equipment can also only transparently transmit cellular communication data such as signaling, short messages, and uplink and downlink call data packets between the network side equipment and the user equipment. Transformation of commands and call control commands.
  • Mode 2 The relay equipment does not have the IMS protocol stack and the voice codec capability, and the user equipment has the IMS protocol stack and the voice codec capability.
  • the relay device when the relay device does not have the IMS protocol stack and the voice codec capability, but the user equipment has the IMS protocol stack and the voice codec capability, the relay device only transparently transmits signaling.
  • the relay device For cellular communication data such as short messages and uplink and downlink call data packets, the user equipment performs the mutual conversion of RTP data packets and PCM code streams, as well as the conversion of SIP signaling and call control commands.
  • Mode 3 The relay equipment has the IMS protocol stack but no voice codec capability, and the user equipment has the voice codec capability.
  • the relay device when the relay device has an IMS protocol stack, the downlink SIP signaling can be converted into a specific call control command, and then the call control command is sent to the user equipment.
  • the user equipment can send the uplink call control command to the relay device, and the relay device converts it into SIP signaling and sends it to the network side device.
  • the relay device does not have the voice codec capability, but the user equipment has this capability, the relay device only transparently transmits the uplink/downlink call data packets in the form of RTP between the network side device and the user equipment, and the user equipment performs RTP data packets and PCM Mutual conversion of code streams.
  • the relay device For the scenario where the relay device is used as the service processing device (that is, the scenario where the service processing mode of the signal relay is "relay device only"), taking VoLTE, VoNR and other calls as examples, see Figure 37, the relay device needs to have the IMS protocol stack and It has the ability of voice codec, and can carry out the mutual conversion of RTP data packets and PCM code streams, as well as the conversion of SIP signaling and call commands.
  • the relay device and the user equipment can also forward the cellular communication data with reference to the above method, which is not repeated in this embodiment. .
  • the relay device can be used as a hotspot device to transmit the cellular signals (including general packet radio service (GPRS), 3G, 4G) received by the relay device through the local SIM card information. Or 5G signal, etc.) into wifi signal transmission.
  • the relay device can also transmit WiFi signals without installing a SIM card locally.
  • the user equipment can establish a connection with the relay device through the WiFi signal transmitted by the relay device, that is, connect to the hotspot of the relay device.
  • the user equipment can transmit the uplink cellular communication data to be sent to the relay device through the network card of the user equipment by means of IP forwarding (IP FORWORD). It is sent to the relay device, and then sent by the relay device to the network side device through the air interface. Similarly, the relay device can also send downlink cellular communication data to the user equipment through its hotspot.
  • IP FORWORD IP forwarding
  • an Internet network card ie, an Internet network card
  • a multimedia messaging service multimedia messaging service, MMS
  • MMS multimedia messaging service
  • the user equipment communicates with the network side equipment autonomously, the user equipment sends multimedia short messages (i.e. multimedia messages) to the network side equipment through the MMS network card, and sends some specific cellular communication data (such as one-key login related data) through the MMS network card.
  • the Internet network card is sent to the network side device.
  • a WiFi network card is also set in the user equipment, and the WiFi network card is used to send application (application, App) data on the user equipment, such as audio and video data related to the running process of the App.
  • a series of network cards are also set on the relay equipment.
  • the CPE when a SIM card is installed locally, the CPE will configure an Internet network card for the local SIM card.
  • the CPE when the user equipment is connected to the relay device through the CPE WiFi hotspot, the CPE will also configure an Internet network card and an MMS network card for the user's SIM card separately.
  • the user equipment When the user equipment is connected to the network side device through the relay device, the user equipment first sends the cellular data service request to the relay device through the local WiFi network card, and then the relay device sends the request to the network side device.
  • the MMS since the MMS is sent to the network side device through the air interface according to the fixed access point name (APN), the user equipment sends the MMS data stream to the local device through the MMS network card of the user equipment.
  • WiFi network card and then sent by the WiFi network card to the CPE WiFi hotspot of the relay device, and then sent to the network side device through Modem1 through the MMS network card of the relay device.
  • the user equipment For application data such as news and videos, the user equipment sends it to the CPE WiFi hotspot of the relay device through the WiFi network card, and then sends it to the network side device through the Internet network card of the SIM card of the relay device through Modem0.
  • the user equipment For specific cellular communication data, the user equipment sends it to the local WiFi network card through the Internet network card of the user equipment, and then the WiFi network card sends it to the CPE WiFi hotspot of the relay device, and then sends it through the Internet network card of the user SIM card of the relay device via Modem1 to network-side devices.
  • the user equipment or the relay device is not a hotspot device
  • the user equipment can send cellular communication data to the relay device through the router, and then the relay device sends the data to the network side device, which is not repeated in this embodiment.
  • the relay device supports the relay device of N user equipments at the same time, and uses the SIM card information of the N user equipments to access the cell.
  • the value of N is determined according to the number of spare Modems in the relay equipment. For example, when the relay device is a mobile phone that supports dual SIM cards, it usually has two Modems. If the SIM card is not installed locally, there are two idle Modems. At this time, the mobile phone can be used as a relay for two user devices at the same time. equipment.
  • IMS protocol e.g., IMS protocol, CS protocol, etc.
  • the relay device can control a local SIM card to power off automatically or according to user instructions, so as to free up a spare Modem for supply.
  • the SIM card of the user equipment is used.
  • the value of N can also be determined according to the number of idle cellular communication protocols in the Modem. For example, when the mobile phone has only one Modem, but the Modem can run 3 sets of IMS protocols, if a SIM card has been installed locally on the mobile phone, the mobile phone will use a set of IMS protocols when accessing the network-side device through the SIM card. There are still two sets of idle IMS protocols left. Therefore, the mobile phone can be used as a relay device for 2 user equipments at the same time.
  • the electronic equipment can be used as user equipment and relay equipment. That is to say, the electronic device can be used as a user equipment to access the cellular network autonomously, and can be used as a relay device to replace other electronic devices to access the cellular network.
  • Modem1 and Modem2 are set in the electronic device 1.
  • the electronic device 1 can use the SIM card 1 to access the network through Modem1.
  • the electronic device 1 can also be used as a relay device of the electronic device 2 to access the information of the SIM card 2 of the electronic device 2 , and access the network side device 2 through the Modem 2 according to the information of the SIM card 2 .
  • the network side device 1 and the network side device 2 may be the same or different.
  • the network side device 1 and the network side device 2 are usually the same.
  • the network side device 1 and the network side device 2 are usually different.
  • the user equipment can perform an incoming call reminder alone, or together with the relay device, or in a certain order.
  • This embodiment does not limit this.
  • the network-side device calls the user equipment
  • the user equipment may ring for a preset time (for example, 20s), and if it is still calling within the preset time status, the incoming call reminder will be performed on the relay device at the same time to remind the user to answer the incoming call.
  • the user equipment can perform authority management on the relay equipment that it has been connected to in the past.
  • the user equipment in response to the user’s operation of the “signal relay” switch item, the user equipment displays, for example, the signal relay interface shown in (b) of FIG. 41 , the interface includes: "Authorization Management” option and "Business Management” option.
  • the user equipment displays an authorization management interface, which includes the electronic equipment that the user equipment has connected to, such as electronic equipment 2 , electronic equipment 3 and electronic equipment 4 . Referring to (c) in FIG.
  • the user device displays, for example, as shown in (d) in FIG. 41 .
  • the setting interface includes "allow authorization", “permanent prohibition” and “temporary deletion” switch items.
  • the "Allow Authorization” option is used to allow the corresponding electronic device to access the user device.
  • the "permanently prohibited” option is used to prohibit the corresponding electronic device from accessing the user's device.
  • the “temporarily delete” option is used to temporarily restrict the corresponding electronic device from accessing the user device, for example, restricting the electronic device 2 from accessing the user device within 5 minutes.
  • the user can set the authority of the corresponding electronic device in the interface as shown in (d) of FIG. 41 according to requirements.
  • the user equipment may also set each relay device to perform cellular communication services, such as call services, short message services, etc., to be performed by the user equipment instead.
  • cellular communication services such as call services, short message services, etc.
  • the user equipment in response to the user's operation of the "service management" option, the user equipment displays, for example, the interface shown in (b) of FIG. 42, which includes configurable Service options such as "All" option, "Call” option, "SMS” option, "Signal” and “Data service” option.
  • the user can set the cellular communication service performed by the corresponding relay device in this interface.
  • the related signal relay settings can be performed through the smart life application in the mobile phone.
  • related setting interfaces reference may be made to (e) in FIG. 4 , (f) in FIG. 4 , FIG. 23 , FIG. 41 , and FIG. 42 , and details are not described herein again in this embodiment.
  • the user equipment may continuously move with the user's location.
  • the communication link between the user equipment and the relay equipment may be abnormal, resulting in poor call quality or even interruption of the call, and poor user experience.
  • the living room is far from the bedroom B.
  • the relay device is in the living room, when the user equipment moves from the living room to the bedroom B with the user, the communication link between the user equipment and the relay device may gradually deteriorate due to signal blocking and other reasons, resulting in poor call quality or even a call. outages, poor user experience.
  • the embodiment of the present application may also determine whether to use the relay device to access the cellular network according to whether the user equipment satisfies a preset handover condition.
  • FIG. 43 is a schematic diagram of a mode switching principle provided by an embodiment of the present application.
  • the user equipment can decide to use the relay mode to access the network-side device, or use the autonomous mode to access the network-side device, according to its historical data of accessing the cellular network.
  • the autonomous mode means that the user equipment accesses the cellular network by itself according to the received cellular signal.
  • FIG. 44 is a flowchart of a communication method provided by another embodiment of the present application, which involves a process in which a user equipment switches an access mode of a network-side device. Specifically include the following steps.
  • the user equipment detects cellular communication parameters.
  • the cellular communication parameters of the user equipment include: the cellular signal quality of the user equipment, the call quality between the user equipment and the relay equipment, the power of the user equipment, the historical call quality of the cell where the user equipment is located, the Geographic location, or whether the user device is connected to a car Bluetooth device, etc.
  • the call quality includes at least one of data transmission quality, link quality and QoE.
  • the data transmission quality may be determined according to parameters such as packet loss rate, time delay, and jitter of call data packets of the communication link.
  • the link quality may be determined according to at least one of reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), or signal-to-interference plus noise ratio (SINR).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • SINR signal-to-interference plus noise ratio
  • the first preset condition may be: the cellular signal of the user equipment is lower than the preset value.
  • the preset value may be -95dBm, -100dBm, -110dBm, -115dBm, and so on.
  • the cellular signal strength of the user equipment is less than the preset value, it means that the strength of the cellular signal is poor, and it may not be possible to maintain stable communication between the user equipment and the network-side equipment, and the Internet connection may be stuck or abnormal calls may occur during the communication process. Therefore, when the cellular signal strength of the user equipment is less than the preset value, the user equipment uses the relay mode to access the network side equipment to improve the communication quality with the network side equipment.
  • the first preset condition may be: the power level of the user equipment is lower than the preset power level.
  • the preset power may be 20%, 10%, or the like of the maximum storage capacity of the battery.
  • the user equipment In the process of autonomously accessing the cellular network, the user equipment needs to continuously monitor broadcast messages sent by the network-side equipment and report TAU information to establish a connection with the network-side equipment, which consumes a lot of power.
  • the user equipment may switch to the relay mode, and use the relay device to access the network side device.
  • the incoming call reminder can only be performed on the relay device side, so that the user can answer the call on the relay device side, further reducing the power of the user equipment. loss.
  • the user when the user is outdoors and it is inconvenient to charge, if the power of the mobile phone is lower than the preset power and the power of the tablet is sufficient, then the user can control the mobile phone to use the tablet as a relay device to connect with the device on the network side, Thereby saving the power of the mobile phone.
  • the first preset condition may be: the user equipment is in an abnormal cell.
  • the user equipment may detect the communication quality between the user equipment and the network side equipment in the daily communication process, determine a cell where communication abnormality often occurs, and mark it as an abnormal cell. After the user equipment switches to the abnormal cell, in order to improve the communication quality between the user equipment and the network side equipment, the user equipment can use the relay equipment to access the network side equipment.
  • the first preset condition may be: the user equipment is in an abnormal position.
  • the user equipment may detect the communication quality between the user equipment and the network side equipment in the daily communication process, determine the location where communication abnormality often occurs, and store the corresponding location information.
  • the abnormal location may be a geographic location, or may be a WiFi coverage area, a Bluetooth coverage area, or the like. Therefore, the abnormal location information corresponding to the abnormal location may be a range of latitude and longitude, or may be a WiFi name, a service set identifier (SSID), a Bluetooth name, or the like.
  • SSID service set identifier
  • the electronic device detects that its current location information is the same as the abnormal location information, it is in an abnormal location.
  • the user equipment can use the relay equipment to access the network side equipment.
  • the first preset condition may be: the user equipment is connected to the vehicle-mounted Bluetooth device. Due to factors such as vehicle occlusion, the cellular signal inside the vehicle is usually weaker than outside the vehicle. Therefore, when the user equipment enters the private car and connects to the on-board Bluetooth device, the private car can be used as a relay device, and the Modem that comes with the private car can be used to access the network side device, thereby improving the communication quality between the user equipment and the network side device.
  • the user equipment can make a comprehensive decision according to the above at least two first preset conditions to form fingerprint data, and decide whether to switch from the autonomous mode to the relay mode to access the network side device according to the fingerprint data.
  • the second preset condition may be: the communication quality between the user equipment and the relay equipment is lower than the preset quality, and the cellular signal strength of the user equipment is higher than the preset strength.
  • the communication quality between the user equipment and the relay device is lower than the preset quality includes: the packet loss rate of the communication link between the user equipment and the relay device is higher than a preset value (for example, 10%); or the call data The delay of the packet is higher than a preset value (for example, 120 ms); or, the signal-to-noise ratio of the side link of the first end is lower than a preset value (for example, 10 dB), and so on.
  • the communication quality between the user equipment and the relay equipment is lower than the preset quality, even if the communication quality between the relay equipment and the network side equipment is good, the call quality between the user equipment and the network side equipment cannot be guaranteed. Therefore, when the cellular signal strength of the user equipment is higher than the preset strength, the user equipment is switched from the relay mode to the autonomous mode to access the network side equipment, and the call quality can be improved when the user equipment directly accesses the network side equipment.
  • the user equipment also needs to perform ping-pong suppression to avoid frequent switching between the autonomous mode and the relay mode, resulting in waste of electronic equipment resources and affecting user experience.
  • the second preset condition may be: the power level of the user equipment is equal to or higher than the preset power level.
  • the preset power may be 20%, 10%, or the like of the maximum storage capacity of the battery.
  • the second preset condition may be: the user equipment switches from an abnormal cell to a normal cell, or moves from an abnormal position to a non-abnormal position.
  • the communication quality between the user equipment and the network side equipment is usually poor, and the relay equipment needs to be used to access the network side equipment.
  • the user equipment switches from an abnormal cell to a normal cell, or moves from an abnormal position to a non-abnormal position, the communication quality between the user equipment and the network side equipment can usually be guaranteed. Therefore, the user equipment is switched from the relay mode to the autonomous mode. mode to directly access network-side devices.
  • the second preset condition may be: the user equipment disconnects from the vehicle-mounted Bluetooth device.
  • the user equipment When the user equipment is disconnected from the vehicle Bluetooth device, it may be that the user does not want to use the vehicle Bluetooth device, or the vehicle is turned off, or the user is far away from the vehicle.
  • the mode is switched to the autonomous mode, and the network side device is directly accessed.
  • the user equipment can make a comprehensive decision according to the above at least two second preset conditions to form fingerprint data, and decide whether to switch from the relay mode to the autonomous mode to access the network side device according to the fingerprint data.
  • the second electronic device can automatically switch between the relay mode and the autonomous mode according to preset conditions, thereby ensuring the quality of the cellular communication.
  • the mutual switching between the autonomous mode and the relay mode may be performed in an idle state, or may be performed in a service state.
  • the idle state refers to when the user equipment is not executing the cellular communication service
  • the service state refers to when the user equipment executes the cellular communication service.
  • the service state may be the process of making a phone call, surfing the Internet, etc. for the user equipment.
  • the user equipment When the user equipment switches between the autonomous mode and the relay mode in the idle state, it can be performed by enabling or disabling the Modem and the IMS protocol stack of the user equipment, that is, a hard switch is performed. Taking switching from the autonomous mode to the relay mode as an example, the user equipment shuts down and controls the local Modem or Modem protocol stack to power off, and shuts down the local IMS protocol stack. Taking switching from relay mode to autonomous mode as an example, the user equipment can control the local Modem and Modem protocol stack to power on, restart the local IMS protocol stack, and reload the protocol stack to connect to the network side device.
  • the user equipment may temporarily not read the local SMS on the SIM card and contact information on the SIM card and other information to achieve fast restart.
  • the unread SIM card information will not be cleaned up in the aging period corresponding to the information, and it can be cached in the host.
  • the user equipment When the user equipment switches between the autonomous mode and the relay mode in the service state, it can perform soft handover, that is, the IMS protocol stack of the user equipment and the IMS protocol stack of the relay device are synchronized, and the service information of one electronic device is synchronized to another electronic device. , so that a location area update (Location Area Update, LAU) or TAU is performed by the other electronic device, thereby accessing the network side device.
  • LAU Location Area Update
  • the following describes the process of switching the user equipment from the autonomous mode to the relay mode by taking the cellular communication service currently being performed by the user equipment as the call service as an example.
  • FIG. 45 is a schematic structural diagram of a user plane and a control plane protocol stack of a user equipment according to an embodiment of the present application.
  • the user plane protocol stack of the user equipment and the network side equipment includes a packet data convergence protocol (packet data convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, media access control ( media access control, MAC) layer and physical layer (physics, PHY).
  • the control plane protocol stack of the user equipment includes a non-access stratum (NAS), a radio resource control (RRC) layer, a PDCP layer, an RLC layer, a MAC layer, and a PHY layer.
  • NAS non-access stratum
  • RRC radio resource control
  • the base station of the network side device includes an RRC layer, a PDCP layer, an RLC layer, a MAC layer and a PHY layer, and a mobility management entity (mobility management entity, MME) of the network side device includes a NAS.
  • the PHY layer is located at the lowest layer, which can also be called Layer 1.
  • the MAC layer, the RLC layer, and the PDCP layer belong to the middle layer, which may also be called Layer 2.
  • the RRC layer and the NAS belong to a higher layer, which can also be called Layer 3.
  • the main function of layer 1 is to provide reliable bit stream transmission between two physical entities and adapt to the transmission medium.
  • the main functions of Layer 2 are channel multiplexing and demultiplexing, data format encapsulation, and data packet scheduling.
  • the main functions of Layer 3 are addressing, routing, connection establishment and control, and resource configuration strategies.
  • the user equipment When the user equipment switches from the autonomous mode to the relay mode, the user equipment needs to synchronize all the state information related to the call in its user plane protocol stack and control plane protocol stack to the relay device, and the relay device initiates the location area Update or TAU refresh, access the network side device.
  • the delay of the call data packet caused by the device switching will be smaller, and the amount of data synchronized during the device switching process (especially the amount of status information) will be larger.
  • the user equipment may only synchronize all the information related to the local call in the local control plane protocol stack to the relay device, such as the data of layer 3 in the control plane protocol stack, and the relay device initiates a LAU or TAU to access the network side device.
  • the user equipment can keep the current call from being dropped during the process of switching the communication mode, so that the user is not aware of it.
  • the user equipment should reduce mode switching in the call state.
  • the user equipment can continuously detect the call quality, and when the call quality continues to decrease within a preset time, the user equipment can play a prompt voice to indicate that the current call quality is gradually decreasing, thereby reminding the user to approach the relay device.
  • the prompt voice may be a rapid "beep beep ⁇ " sound, or the voice information "the signal of the local machine is weak, please approach the relay equipment" and the like.
  • prompt information may also be displayed on the call interface of the user equipment.
  • the prompt information may be text information "signal is weak, please approach the relay device".
  • the relay device and the user equipment can also negotiate based on the current communication link, and then establish one or more communication links to pass Multiple links jointly transmit call data. For example, when the user equipment and the relay device are currently connected through a WiFi link, another data service link may be established between the user equipment and the relay device to transmit call data.
  • a part of the call data packets can be transmitted by the first communication link, and another part of the call data packets can be transmitted by the second communication link, so as to Reduce the data transmission pressure of each link and improve the transmission quality of call data packets.
  • all call data packets may be copied, and all call data packets may be transmitted on each communication link, so as to reduce the number of call data packets missing at the receiving end and improve call quality.
  • FIG. 46 is a schematic diagram of a multi-network collaboration scenario provided by an embodiment of the present application.
  • the user equipment when the user equipment is installed with SIM card 1 and SIM2, and SIM card 1 is associated with the relay equipment, the user equipment can access the network side equipment through the multi-channel network.
  • One way is to use the information of the SIM card 1 to access the network side device through the relay device, and the other way is for the user equipment to use the information of the SIM card 2 to access the network side device.
  • FIG. 47 is a schematic diagram of a network convergence scenario provided by another embodiment of the present application.
  • the relay device when the relay device obtains the information of the SIM card 1 from the user equipment and the SIM card 2 is installed locally, the relay device can access the network side device by using the multi-channel network.
  • One way is to use the information of the SIM card 1 to access the network side device, and the other way is to use the information of the SIM card 2 to access the network side device.
  • the auxiliary device 1 can enjoy the multi-network collaboration capability of the relay device, that is, the auxiliary device 1 can use the information of the SIM card 1 to access the network-side device, or The network side device can be accessed using the information of the SIM card 2 .
  • the relay device can also access other electronic devices (for example, the auxiliary device 2 ), and then access the network-side device through the auxiliary device 2 . It should be understood that when the relay device can access the network-side device through the auxiliary device 2, the user equipment corresponding to the relay device can also use the auxiliary device 2 to access the network-side device.
  • Embodiments of the present application further provide a first electronic device, where the first electronic device is configured to execute the communication method executed by the relay device in the foregoing embodiments.
  • Embodiments of the present application further provide a second electronic device, where the second electronic device is configured to execute the communication methods executed by the user equipment in the foregoing embodiments.
  • An embodiment of the present application further provides a communication method, which is applied to the first electronic device, and includes the method performed by the relay device in the foregoing embodiments.
  • the embodiment of the present application further provides a communication method, the method is applied to the second electronic device, and the method includes the method performed by the user equipment in the foregoing embodiments.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method performed by the relay device in the foregoing embodiments is implemented.
  • Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements the methods performed by the user equipment in the foregoing embodiments.
  • the embodiments of the present application further provide a computer program product, the program product includes a program, when the program is run by the device, the first electronic device enables the first electronic device to implement the method performed by the relay device in the foregoing embodiments.
  • Embodiments of the present application further provide a computer program product, where the program product includes a program that, when the program is run by the device, enables the second electronic device to implement the methods performed by the user equipment in the foregoing embodiments.
  • Embodiments of the present application further provide a chip, which is applied to a first electronic device, the chip includes a memory and a processor, and the processor executes a computer program stored in the memory to implement the methods performed by the relay device in the above embodiments.
  • Embodiments of the present application further provide a chip, which is applied to a second electronic device.
  • the chip includes a memory and a processor, and the processor executes a computer program stored in the memory to implement the methods performed by the user equipment in the foregoing embodiments.
  • processors mentioned in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application-specific integrated circuits ( application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SCRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features.
  • a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more.
  • references in this specification to "one embodiment” or “some embodiments” and the like mean that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variants mean “including but not limited to” unless specifically emphasized otherwise.

Abstract

本申请实施例提供一种通信系统、第一电子设备和第二电子设备，涉及通信技术领域。该通信系统包括第一电子设备和第二电子设备，第二电子设备上安装有第一SIM卡，第一SIM卡中存储有第一SIM卡信息；第一电子设备在与第二电子设备建立连接后，获取第一SIM卡信息，并根据该第一SIM卡信息与网络侧设备连接，以使得第二电子设备进入接力模式。在接力模式下，第一电子设备协助第二电子设备执行与第一SIM卡相关的蜂窝通信业务。通过本实施例提供的技术方案，当第一电子设备的蜂窝信号较差时，可以选择蜂窝信号较强的第二电子设备协助第一电子设备访问网络侧设备，提高第二电子设备的蜂窝通信质量。

Description

一种通信系统、第一电子设备和第二电子设备
本申请要求于2021年03月31日提交国家知识产权局、申请号为202110352818.X、申请名称为“一种通信系统、第一电子设备和第二电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信系统、第一电子设备和第二电子设备。
背景技术
目前，用户设备(例如手机)通过基站发射的蜂窝信号连接蜂窝网络，执行蜂窝通信业务，例如打电话、上网、收发短信等。然而，基站发射的蜂窝信号可能会由于基站分布不佳、多个基站相互干扰、建筑物遮挡、手机距离基站较远等情况，导致手机接收到的蜂窝信号强度较弱，甚至接收不到蜂窝信号，从而影响蜂窝通信业务的进行。例如，在通话过程中出现语音断续、无声、视频卡顿、甚至通话中断等问题，用户体验不佳。
发明内容
本申请提供一种通信系统、第一电子设备和第二电子设备，能够提高电子设备的蜂窝通信质量。
为达到上述目的，本申请采用如下技术方案：
第一方面，本申请实施例提供一种通信系统，包括第一电子设备和第二电子设备，第二电子设备上安装有第一SIM卡，第一SIM卡中存储有第一SIM卡信息。第一电子设备与第二电子设备建立连接；第一电子设备获取第一SIM卡信息；第一电子设备根据第一SIM卡信息与网络侧设备连接，以使得第二电子设备进入接力模式；其中，在接力模式下，第一电子设备协助第二电子设备执行与第一SIM卡相关的蜂窝通信业务。
在本实施例中，第一电子设备也称为接力设备，第二电子设备也称为用户设备。当第一电子设备的蜂窝信号较差时，可以选择蜂窝信号较强的第二电子设备协助第一电子设备访问网络侧设备。由于第一电子设备的蜂窝信号较好，第一电子设备与网络侧设备之间的通信链路的链路质量较好，有助于改善蜂窝通信数据传输过程中的丢包、抖动和延时。因此，相对于第二电子设备直接和网络侧设备通信，通过第一电子设备与网络侧设备通信能够提高蜂窝通信质量。
例如，针对通话的场景，能够改善第二电子设备通话过程中的通话断续、无声、视频卡顿、甚至通话中断等问题。针对短信等业务场景，能够提高第二电子设备短信的收发速率，改善短信到达第二电子设备的时延。针对上网等业务场景，能够提高第二电子设备网页的刷新速率。
在一些实施例中，第一电子设备协助第二电子设备执行与第一SIM卡相关的蜂窝通信业务，包括：第一电子设备在网络侧设备和第二电子设备之间转发第一SIM卡相关的蜂窝通信数据，并由第二电子设备根据该蜂窝通信数据处理对应的蜂窝通信业务。
在一些实施例中，第一电子设备协助第二电子设备执行与第一SIM卡相关的蜂窝通信 业务，包括：第一电子设备与网络侧设备交互第一SIM卡相关的蜂窝通信数据，并在本地根据蜂窝通信数据处理对应的蜂窝通信业务。
本实施例提供的系统并不局限应用在第二电子设备蜂窝信号质量差的场景，还可以应用于以下场景：
(1)以第一电子设备是平板电脑，第二电子设备是手机为例，当手机电量低且不便于充电时，手机使用平板电脑协助手机处理蜂窝通信业务，以节约手机的电量。
(2)当第一电子设备是安装在室外的CPE，第二电子设备是室内的路由器时，可以将原本要安装在CPE的第一SIM卡安装在路由器上，由CPE从路由器上访问第一SIM卡信息，从而访问网络侧设备。本实施例可以将第一SIM卡从室外转移至室内，避免了SIM卡被盗窃以及由于日晒被损坏的风险。此外，相比于从已安装在室外的CPE上拆装SIM卡，从室内的路由器上拆装SIM卡更加地方便。
(3)当第一电子设备是CPE，第二电子设备是手机时，CPE通过手机的第一SIM卡信息访问网络侧设备，实现CPE在不插SIM卡的场景下做WiFi热点，可以避免用户多维护一张SIM卡。
(4)以第一电子设备是手机1，第二电子设备均是手机2为例，用户将手机2遗漏在家里之后，可以通过手机1获取手机2的第一SIM卡信息，根据第一SIM卡信息访问网络侧设备，并在手机1上处理第一SIM卡对应的蜂窝通信业务，可以避免用户错过手机2的来电。
(5)以第一电子设备是智能手表，第二电子设备是手机为例，当用户佩戴智能手表在户外运动，不便于携带手机时，可以通过智能手表访问手机的第一SIM卡信息，并使用第一SIM卡信息访问网络侧设备，并在智能手表上处理第一SIM卡对应的蜂窝通信业务，避免错过手机的来电。
(6)以第一电子设备是手机，第二电子设备是CPE为例，手机可以访问CPE的第一SIM卡信息，替代CPE在室内进行蜂窝信号强度检测，确定CPE的放置位置。
(7)以第一电子设备时手机，第二电子设备是CPE为例，手机可以获取CPE的第一SIM卡信息，使用CPE中第一SIM卡的流量上网，以节约手机本地SIM卡的流量。
(8)以第一电子设备是最高支持5G技术的手机为例，以第二电子设备是支持4G技术的手机为例，第二电子设备通过第一电子设备访问蜂窝网络时，可以使用5G技术与网络侧设备交互通信数据，提高数据传输速度。
(9)以第一电子设备是手机，第二电子设备是接力服务器为例，用户也可以使用接力服务器根据手机的第一SIM卡信息访问网络侧设备。
(10)以第一电子设备是手机1，第二电子设备是手机2为例，手机2同时安装两张SIM卡(例如SIM卡1和SIM卡2)。当手机2的SIM卡1在通话过程中时，手机2可以自动控制手机1使用SIM卡2的信息访问网络侧设备。在该过程中，如果手机2的SIM卡2有来电，手机1可以在本地处理该来电，也可以将来电通知到手机2进行处理，以避免用户错过SIM卡2的来电。
在一些实施例中，当第二电子设备处于自主模式时，若第二电子设备满足第一预设条件，则第二电子设备从自主模式切换至接力模式访问网络侧设备。和/或，当第二电子设备处于接力模式时，若第二电子设备满足第二预设条件，则第二电子设备从接力模式切换至 自主模式访问网络侧设备。其中，在自主模式下，第二电子设备根据第一SIM卡信息与网络侧设备连接，与网络侧设备直接交互第一SIM卡相关的蜂窝通信数据，并在本地根据该蜂窝通信数据处理对应的蜂窝通信业务。
其中，第一预设条件为：第二电子设备的蜂窝信号强度低于强度阈值；和/或，第二电子设备的电量低于电量阈值；和/或，第二电子设备处于异常小区；和/或，第二电子设备处于异常位置；和/或，第二电子设备连接车载蓝牙设备。当第二电子设备满足第一预设条件时，第二电子设备从接力模式切换至自主模式访问网络侧设备，可以提高第二电子设备的蜂窝通信质量，或者节约电量。
第二预设条件为：第一电子设备与第二电子设备的通信质量低于通信质量阈值；和/或，第二电子设备的电量高于或者等于电量阈值；和/或，第二电子设备从异常小区切换至正常小区；和/或，第二电子设备从异常位置切换至正常位置；和/或，第二电子设备断开与车载蓝牙设备的连接。当第二电子设备满足第一预设条件时，第二电子设备从自主模式切换至接力模式访问网络侧设备，可以减少第一电子设备的功耗。
通过本实施例提供的系统，第二电子设备在处理蜂窝通信业务的过程中，可以根据预设条件自动在接力模式和自主模式之间进行切换，从而保证蜂窝通信质量。
在一些实施例中，当第二电子设备处于空闲态时，第二电子设备控制本地的调制解调器Modem、Modem协议栈或者互联网多媒体子系统IMS协议栈下电，并控制第一电子设备通过第一SIM卡信息访问网络侧设备，以从自主模式切换至接力模式。或者，第二电子设备断开与第一电子设备的连接，控制本地的Modem、Modem协议栈和IMS协议栈上电，根据第一SIM卡信息访问网络侧设备，以从接力模式切换至自主模式。
在一些实施例中，当第二电子设备处于业务态时，第二电子设备控制本地的Modem、Modem协议栈或者IMS协议栈下电，并控制第二电子设备将用户面协议栈及控制面协议栈中与当前业务相关的状态信息同步给第一电子设备，由第一电子设备根据第一SIM卡信息以及该状态信息访问网络侧设备，以从自主模式切换至接力模式。或者，第二电子设备控制本地的Modem、Modem和IMS协议栈上电，获取第一电子设备的用户面协议栈及控制面协议栈中与当前业务相关的状态信息，并根据第一SIM卡信息以及该状态信息访问网络侧设备，以从接力模式切换至自主模式。
在一些实施例中，第一电子设备与第二电子设备通过近场通信技术、远场通信技术或者物理实体连接。
在一些实施例中，第一电子设备与第二电子设备建立连接，包括：第一电子设备广播第一通知消息，该第一通知消息用于通知第一电子设备具备信号接力功能。第二电子设备在接收到第一通知消息之后显示第一提示框，该第一提示框中包括设备选择控件。响应于用户对该设备选择控件的操作，第一电子设备和第二电子设备建立连接。
在一些实施例中，第一电子设备广播第一通知消息，包括：当第一电子设备的蜂窝信号强度大于或等于强度阈值时，第一电子设备广播第一通知消息。
在一些实施例中，第二电子设备在接收到第一通知消息之后显示第一提示框，包括：当第二电子设备的蜂窝信号强度小于强度阈值时，第二电子设备在接收到第一通知消息之后显示第一提示框。
在一些实施例中，第一电子设备获取第一SIM卡信息，包括：第一电子设备实时获取 第一SIM卡信息中的鉴权数据，该鉴权数据用于与该网络侧连接时进行鉴权。第一电子设备预先缓存第一SIM卡信息中除该鉴权数据以外的其他数据，并根据不同数据的老化周期更新对应的数据，以便第一电子设备在处理蜂窝通信业务时，直接从本地读取该其他数据。在本实施例中，第一电子设备预先缓存第一SIM卡信息中除该鉴权数据以外的其他数据，可以提高第一电子设备访问第一SIM卡信息的速率。
在一些实施例中，第一电子设备在使用第一SIM卡信息与网络侧设备连接之后，显示第三提示框，第三提示框用于提示第一电子设备正在为第二电子设备提供信号接力服务。
在一些实施例中，当第二电子设备的通话质量低于质量阈值时，第二电子设备显示提示信息，该提示信息用于提示用户控制第二电子设备靠近第一电子设备。
在一些实施例中，第一电子设备使用第一SIM卡的蜂窝数据流量发射热点信号；当第三电子设备连接该热点信号之后，第三电子设备通过第一电子设备使用第一SIM卡的蜂窝数据流量上网。在本实施例中，第一电子设备可以向第三电子设备分享第一电子设备的流量。
在一些实施例中，第二电子设备还安装有第二SIM卡，第二SIM卡中存储有第二SIM卡信息；第二电子设备使用第二SIM卡信息与网络侧设备连接，并在本地处理第二SIM卡相关的蜂窝通信业务。在本实施例中，第二电子设备既可以通过第一电子设备处理第一SIM卡的蜂窝通信业务，也可以处理本机第二SIM卡的蜂窝通信业务。
在一些实施例中，第一电子设备还安装有第三SIM卡，第三SIM卡中存储有第三SIM卡信息；第一电子设备使用第三SIM卡信息与网络侧设备连接，并在本地处理第三SIM卡相关的蜂窝通信业务。在本实施例中，第一电子设备既可以协助第二电子设备处理第一SIM卡的蜂窝通信业务，也可以处理本机第三SIM卡的蜂窝通信业务。
第二方面，本申请实施例还提供一种第一电子设备，该第一电子设备被配置为：与第二电子设备建立连接，第二电子设备安装有第一SIM卡，第一SIM卡中存储有第一SIM卡信息；获取第一SIM卡信息；根据第一SIM卡信息与网络侧设备连接，以使得第二电子设备进入接力模式；其中，在接力模式下，第一电子设备协助第二电子设备执行与第一SIM卡相关的蜂窝通信业务。
在一些实施例中，在接力模式下，第一电子设备还被配置为：在网络侧设备和第二电子设备之间转发第一SIM卡相关的蜂窝通信数据，并由第二电子设备根据该蜂窝通信数据处理对应的蜂窝通信业务。
在另一些实施例中，在接力模式下，第一电子设备还被配置为：与网络侧设备交互第一SIM卡相关的蜂窝通信数据，并在本地根据该蜂窝通信数据处理对应的蜂窝通信业务。
在一些实施例中，第一电子设备与第二电子设备通过近场通信技术、远场通信技术或者物理实体连接。
在一些实施例中，第一电子设备还被配置为：广播第一通知消息，第一通知消息用于通知第一电子设备具备信号接力功能，以由第二电子设备根据第一通知消息与第一电子设备建立连接。
在一些实施例中，第一电子设备还被配置为：当第一电子设备的蜂窝信号强度大于或等于强度阈值时，第一电子设备广播第一通知消息。
在一些实施例中，第一电子设备被配置为：实时获取第一SIM卡信息中的鉴权数据， 该鉴权数据用于与该网络侧连接时进行鉴权；预先缓存第一SIM卡信息中除该鉴权数据以外的其他数据，并根据不同数据的老化周期更新对应的数据，以便第一电子设备在处理蜂窝通信业务时，直接从本地读取该其他数据。
在一些实施例中，第一电子设备还被配置为：在使用第一SIM卡信息与网络侧设备连接之后，显示第三提示框，第三提示框用于提示第一电子设备正在为第二电子设备提供信号接力服务。
在一些实施例中，第一电子设备还被配置为：使用第一SIM卡的蜂窝数据流量发射热点信号；当第三电子设备连接该热点信号之后，第三电子设备通过第一电子设备使用第一SIM卡的蜂窝数据流量上网。
在一些实施例中，第一电子设备还安装有第三SIM卡，第三SIM卡中存储有第三SIM卡信息；第一电子设备还被配置为：使用第三SIM卡信息与网络侧设备连接，并在本地处理第三SIM卡相关的蜂窝通信业务。
第三方面，本申请实施例还提供一种第二电子设备，第二电子设备上安装有第一SIM卡，第一SIM卡中存储有第一SIM卡信息；第二电子被配置为：与第一电子设备建立连接；向第一电子设备发送第一SIM卡信息，第一SIM卡信息用于第一电子设备与网络侧设备连接，以使得第二电子设备进入接力模式；其中，在接力模式下，第一电子设备协助第二电子设备执行与第一SIM卡相关的蜂窝通信业务。
在一些实施例中，在接力模式下，第一电子设备在网络侧设备和第二电子设备之间转发第一SIM卡相关的蜂窝通信数据，并由第二电子设备根据该蜂窝通信数据处理对应的蜂窝通信业务。
在一些实施例中，在接力模式下，第一电子设备与网络侧设备交互第一SIM卡相关的蜂窝通信数据，并在本地根据该蜂窝通信数据处理对应的蜂窝通信业务。
在一些实施例中，第二电子设备还被配置为：当第二电子设备处于自主模式时，若第二电子设备满足第一预设条件，则第二电子设备从自主模式切换至接力模式访问网络侧设备；和/或，当第二电子设备处于接力模式时，若第二电子设备满足第二预设条件，则第二电子设备从接力模式切换至自主模式访问网络侧设备；其中，在自主模式下，第二电子设备根据第一SIM卡信息与网络侧设备连接，与网络侧设备直接交互第一SIM卡相关的蜂窝通信数据，并在本地根据该蜂窝通信数据处理对应的蜂窝通信业务。
其中，第一预设条件为：第二电子设备的蜂窝信号强度低于强度阈值；和/或，第二电子设备的电量低于电量阈值；和/或，第二电子设备处于异常小区；和/或，第二电子设备处于异常位置；和/或，第二电子设备连接车载蓝牙设备。
第二预设条件为：第一电子设备与第二电子设备的通信质量低于通信质量阈值；和/或，第二电子设备的电量高于或者等于电量阈值；和/或，第二电子设备从异常小区切换至正常小区；和/或，第二电子设备从异常位置切换至正常位置；和/或，第二电子设备断开与该车载蓝牙设备的连接。
在一些实施例中，当第二电子设备处于空闲态时，第二电子设备还被配置为：控制本地的调制解调器Modem、Modem协议栈或者互联网多媒体子系统IMS协议栈下电，并控制第一电子设备通过第一SIM卡信息访问网络侧设备，以从自主模式切换至接力模式；和/或，断开与第一电子设备的连接，控制本地的Modem、Modem协议栈和IMS协议栈上电， 并根据第一SIM卡信息访问网络侧设备，以从接力模式切换至自主模式。
在一些实施例中，当第二电子设备处于业务态时，第二电子设备还被配置为：控制本地的Modem、Modem协议栈或者IMS协议栈下电，并将本地用户面协议栈及控制面协议栈中与当前业务相关的状态信息同步给第一电子设备，由第一电子设备根据第一SIM卡信息以及该状态信息访问网络侧设备，以从自主模式切换至接力模式。和/或，控制本地的Modem、Modem协议栈和IMS协议栈上电，获取第一电子设备的用户面协议栈及控制面协议栈中与当前业务相关的状态信息，并根据第一SIM卡信息以及该状态信息访问网络侧设备，以从接力模式切换至自主模式。
在一些实施例中，第一电子设备与第二电子设备通过近场通信技术、远场通信技术或者物理实体连接。
在一些实施例中，第二电子设备还被配置为：在接收到第一通知消息之后显示第一提示框，第一通知消息用于通知第一电子设备具备信号接力功能，第一提示框中包括设备选择控件；响应于用户对该设备选择控件的操作，和第二电子设备建立连接。
在一些实施例中，第二电子设备还被配置为：当第二电子设备的蜂窝信号强度小于强度阈值时，第二电子设备在接收到第一通知消息之后显示第一提示框。
在一些实施例中，第二电子设备还被配置为：当第二电子设备的通话质量低于质量阈值时，显示提示信息，该提示信息用于提示用户控制第二电子设备靠近第一电子设备。
在一些实施例中，第二电子设备还安装有第二SIM卡，第二SIM卡中存储有第二SIM卡信息；第二电子设备还被配置为：使用第二SIM卡信息与网络侧设备连接，并在本地处理第二SIM卡相关的蜂窝通信业务。
第四方面，本申请实施例提供一种通信方法，该方法应用于第一电子设备，该方法包括上述第二方面中第一电子设备被配置执行的内容。
第五方面，本申请实施例提供一种通信方法，该方法应用于第二电子设备，该方法包括上述第三方面中第二电子设备被配置执行的内容。
第六方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，该计算机程序被处理器执行时实现上述第四方面示出的通信方法。
第七方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，该计算机程序被处理器执行时实现上述第五方面示出的通信方法。
第八方面，本申请实施例提供一种计算机程序产品，该程序产品包括程序，当该程序被设备运行时，使得第一电子设备实现如上述第四方面示出的通信方法。
第九方面，本申请实施例提供一种计算机程序产品，该程序产品包括程序，当该程序被设备运行时，使得第二电子设备实现如上述第五方面示出的通信方法。
第十方面，本申请实施例提供一种芯片，应用于第一电子设备，该芯片包括存储器和处理器，该处理器执行存储器中存储的计算机程序，以实现上述第四方面示出的通信方法。
第十一方面，本申请实施例提供一种芯片，应用于第二电子设备，该芯片包括存储器和处理器，该处理器执行存储器中存储的计算机程序，以实现上述第五方面示出的通信方法。
可以理解的是，上述第二方面至第十一方面的有益效果可以参见上述第一方面中的相关描述，在此不再赘述。
附图说明
图1是现有的用户设备与网络侧设备的通信系统结构的示意图；
图2是本申请实施例提供的通信方法所适用的通信系统的结构示意图一；
图3是本申请实施例提供的通信方法所适用的通信系统的结构示意图二；
图4是本申请的一个实施例提供的用户设备的界面示意图；
图5是本申请实施例提供的接力设备发现与连接的示意性流程图；
图6是本申请实施例提供的接力设备与用户设备之间的通信链路示意图；
图7是本申请另一个实施例提供的用户设备的界面示意图；
图8是本申请又一个实施例提供的用户设备的界面示意图；
图9是本申请实施例提供的远程SIM卡访问方法的流程图；
图10是本申请实施例提供的SIM卡信息读取方式示意图一；
图11是本申请实施例提供的SIM卡信息读取方式示意图二；
图12是本申请实施例提供的信号接力通信过程中数据传输路径的示意图；
图13是本申请实施例提供的转发设备的数据转发方式示意图；
图14是本申请实施例提供的信号接力通信的原理示意图；
图15是本申请实施例提供的通信方法所适用的通信场景一；
图16是本申请实施例提供的通信方法所适用的通信场景二；
图17是本申请实施例提供的通信方法所适用的通信场景三；
图18是本申请再一个实施例提供的用户设备的界面示意图；
图19是本申请实施例提供的用户设备来电接听过程的流程图；
图20是本申请实施例提供的用户设备来电界面示意图；
图21是本申请实施例提供的通信方法所适用的通信场景四；
图22是本申请实施例提供的通信方法所适用的通信场景五；
图23是本申请实施例提供的在接力设备上选择用户设备的过程示意图；
图24是本申请又一个实施例提供的用户设备的界面示意图；
图25是本申请的实施例提供的基于接力设备的通信方法的流程图；
图26A是本申请的一个实施例提供的通信方法所适用的通信场景七；
图26B是本申请另一实施例提供的通信方法所适用的通信场景；
图27是本申请实施例提供的通信方法所适用的通信场景八；
图28是本申请实施例提供的通信方法所适用的通信场景十；
图29是本申请实施例提供的通信方法所适用的通信系统的结构示意图三；
图30是本申请实施例提供的接力服务器的套餐设置示意图；
图31是本申请实施例提供的双卡来电场景示意图一；
图32是本申请实施例提供的双卡来电场景示意图二；
图33是本申请实施例提供的信号接力通信过程中的数据传输示意图一；
图34是本申请实施例提供的信号接力通信过程中的数据传输示意图二；
图35是本申请实施例提供的信号接力通信过程中的数据传输示意图三；
图36是本申请实施例提供的信号接力通信过程中的数据传输示意图四；
图37是本申请实施例提供的信号接力通信过程中的数据传输示意图五；
图38是本申请实施例提供的用户设备与接力设备的通信方式示意图一；
图39是本申请实施例提供的用户设备与接力设备的通信方式示意图二；
图40是本申请实施例提供的接力设备与网络侧设备的通信方式示意图；
图41是本申请实施例提供的接力设备的访问权限管理示意图；
图42是本申请实施例提供的接力设备的蜂窝业务管理示意图；
图43是本申请实施例提供的模式切换原理示意图；
图44是本申请另一个实施例提供的通信方法的流程图；
图45是本申请实施例提供的用户设备的用户面及控制面协议栈的示意性架构图；
图46是本申请一个实施例提供的多网协同场景示意图；
图47是本申请另一个实施例提供的网络融合场景的示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，
WiMAX)通信系统、第五代(5th Generation，5G)系统或新无线(new radio，NR)、全球移动通信系统(global system for mobile communications，GSM)、码分多址(code division multiple access，CDMA)通信系统、时分同步码分多址(time division-synchronous CDMA，TD-SCDMA)通信系统等。
本实施例提供的技术方案适用于电路交换(Circuit Switched，CS)、长期演进语音承载(voice over long-term evolution，VoLTE)、新空口语音承载(voice over new radio，VoNR)、长期演进视频承载(video over long-term evolution，ViLTE)、新空口视频承载(video over new radio，ViNR)、演进分组系统回落(evolved packet system fallback，EPS fallback)、CS回落(CS fallback)、基于无线保真(wireless fidelity，WiFi)的语音通话(voice over WiFi，VoWiFi)或者基于WiFi的视频通话(video over WiFi，ViWiFi)等通话中。
目前，用户设备(例如手机)通过基站发射的蜂窝信号连接蜂窝网络，执行蜂窝通信业务，例如打电话、上网、收发短信等。然而，基站发射的蜂窝信号可能会由于基站分布不佳、多个基站相互干扰、建筑物遮挡、手机距离基站较远等情况，导致手机接收到的蜂窝信号强度较弱，甚至接收不到蜂窝信号，从而影响蜂窝通信业务的进行。例如，参见图1所示，在通话过程中，当手机侧的蜂窝信号强度较弱时，手机和基站之间的通信链路质量通常较差，并出现通话数据包大量丢包、延时较大、抖动较大等情况，导致通话过程中出现语音断续、无声、视频卡顿、甚至通话中断等问题，用户体验不佳。
为此，本申请实施例提供一种通信方法，以在一定程度上解决用户设备侧蜂窝信号较差时，蜂窝通信业务异常的问题。
图2是本申请实施例提供的通信方法所适用的通信系统的结构示意图一。参见图2所示，该通信系统包括用户设备、接力设备和网络侧设备，用于提供一种通过接力设备替代用户设备访问网络侧设备的通信模式，简称接力模式。
在本实施例中，用户设备(user equipment，UE)可以是手机、平板电脑、笔记本电脑、 台式电脑、智能电视、可穿戴设备(如智能手表)、车载设备、智能家用设备(如智能音箱)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本、个人数字助理(personal digital assistant，PDA)等电子设备。接力设备可以是客户前置设备(customer premise equipment，CPE)，也可以是用户设备，还可以是云服务器中的一个能够提供信号接力服务的功能模块等。
本申请实施例中的网络侧设备可以具有能够为电子设备提供随机接入功能的设备或可设置于该设备的芯片，该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，还可以为5G，如，NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(DU，distributed unit)、未来5G网络中的网络侧设备或者未来演进的PLMN网络中的网络侧设备等，本申请实施例并不限定。
参见图3所示，用户设备中通常安装有用户识别模块(subscriber identity module，SIM)卡，例如实体SIM卡、嵌入式SIM(embedded-SIM，e-SIM)卡、虚拟SIM卡等，其中虚拟SIM卡包括天际通应用。SIM卡中存储有国际移动用户识别码(international mobile subscriber identification number，IMSI)，IMSI是用户设备访问蜂窝网络的唯一用户标识。用户设备在访问网络侧设备时，需要通过IMSI进行鉴权，以便网络侧设备识别用户设备的身份。
用户设备可以根据用户指令选择一个蜂窝信号较好的电子设备作为接力设备，将本地的SIM卡信息直接通过本地的应用处理器(application processor，AP)发送给接力设备的AP，或者将本地的SIM卡信息依次通过本地的Modem、本地的AP发送给接力设备的AP。随后，由接力设备的Modem使用该SIM卡信息中的IMSI作为身份标识，替代用户设备直接访问网络侧设备(如基站)。而用户设备本地的Modem并不与网络侧设备通信。
需要特别说明的是，在本实施例中，用户设备是指提供SIM卡信息的电子设备，接力设备是指使用该SIM卡信息访问蜂窝网络的电子设备。此外，Modem可以是电子设备上的实体硬件，也可以是由该实体硬件实例化出来的Modem功能模块。当一个Modem实体硬件实例化出多个Modem功能模块时，该多个Modem功能模块通过分时复用的方式共享该Modem实体硬件资源。
在信号接力通信过程中，用户设备可以本地处理蜂窝通信业务。具体地，用户设备将上行蜂窝通信数据发送给接力设备，再由接力设备转发给网络侧设备；此外，网络侧设备还需要将下行蜂窝通信数据发送给接力设备，再由接力设备转发给用户设备。
由于接力设备侧的蜂窝信号较好，因此，接力设备与网络侧设备之间的通信链路的链路质量较好，有助于改善数据传输过程中的丢包、抖动和延时。因此，相对于用户设备直接和网络侧设备通信，通过接力设备与网络侧设备通信能够提高通信质量。例如，针对通话的场景，能够改善通话过程中的通话断续、无声、视频卡顿、甚至通话中断等问题。针对短信等业务场景，能够提高短信的收发速率，改善短信到达用户设备的时延。针对上网 等业务场景，能够提高网页的刷新速率。
此外，在信号接力通信过程中，也可以由接力设备处理蜂窝通信业务。具体地，接力设备将本地产生的上行蜂窝通信数据发送给网络侧设备，并且接收并处理网络侧设备发送的下行蜂窝通信数据。由于接力设备侧的蜂窝信号较好，接力设备在代替用户设备处理接入蜂窝网络并处理蜂窝通信业务的过程中，同样可以保证蜂窝通信质量。
下面对本申请提供的技术方案进行详细的说明。
用户设备在使用接力设备接入蜂窝网络的过程中，首先需要对接力设备进行设备发现与连接。通常情况下，用户设备在打开信号接力功能之后才能对接力设备进行设备发现与连接。图4是申请实施例提供的用户设备的界面示意图，涉及用户设备根据用户指令打开信号接力功能的过程。具体如下所示。
参见图4中的(a)所示，用户设备的主屏幕界面中显示有“时钟”、“日历”、“图库”、“备忘录”、“设置”等应用图标。用户设备在检测到用户对“设置”图标的操作之后，可以显示设置界面。
参见图4中的(b)所示，设置界面中可以包括用户信息、“无线局域网(Wirele Local Area Network，WLAN)”、“蓝牙”、“移动网络”、“更多连接”等选项。响应于用户对“移动网络”选项的操作，用户设备显示移动网络界面。
参见图4中的(c)所示，移动网络界面中包括“飞行模式”、“移动数据”、“SIM卡管理”、“个人热点”、“流量管理”等选项。响应于用户对“移动数据”选项的操作，用户设备显示移动数据界面。
参见图4中的(d)所示，移动数据界面中包括“移动数据”、“数据漫游”、“启用5G”、“APN”等开关项以及“信号接力”选项。响应于用户对“信号接力”选项的操作，用户设备显示信号接力界面。
参见图4中的(e)所示，信号接力界面中包括“信号接力”开关项、“成为接力设备”开关项以及“设备授权管理”选项。其中，当“信号接力”开关项打开之后，用户设备将能够对接力设备进行设备发现，并在与接力设备建立连接之后，通过接力设备的蜂窝信号访问蜂窝网络。
本实施例还为信号接力的通信场景配置了各种设置模式。例如，参见图4中的(f)所示，用户在打开“信号接力”开关项之后，可以设置信号接力场景下用户设备和接力设备的各项具体工作模式，其中包括接力设备驻网模式、业务处理模式、是否共享流量、接力设备服务模式等。
其中，接力设备驻网模式可以被设置为“全模式”或者“用户设备模式”。在“全模式”下，接力设备以自身的驻网方式驻网。在“用户设备模式”下，接力设备根据用户设备的能力(例如用户设备可访问蜂窝网络的频段等)进行驻网。
业务处理模式可以被设置为“仅用户设备”模式、“仅接力设备”模式或者“同时处理”模式。在“仅用户设备”模式下，蜂窝通信业务仅在用户设备侧进行处理，例如仅在用户设备侧进行来电提醒。在“仅接力设备”模式下，蜂窝通信业务仅在接力设备侧进行处理，例如仅在接力设备侧进行来电提醒。在“同时处理”模式下，蜂窝通信业务同时在接力设备侧和用户设备侧进行处理，例如同时在接力设备和用户设备侧进行来电提醒。
当“共享流量”选项开启之后，在用户设备使用接力设备访问蜂窝网络的过程中，其他 与接力设备连接的电子设备也可以使用用户设备的蜂窝数据流量。
接力设备服务模式可以被设置为“尽力模式”或者“全力模式”。在“尽力模式”下，当接力设备上有空闲的Modem时，为用户设备提供信号接力服务，否则不提供信号接力服务。在“全力模式”下，当接力设备上没有空闲的Modem时，将解除对现有Modem的占用，以为用户设备提供信号接力服务。
图5是本申请实施例提供的接力设备发现与连接的示意性流程图。具体包括如下步骤S501-S505。
S501，接力设备广播第一通知消息，该第一通知消息携带接力设备的业务能力信息。
第一通知消息用于通知其他电子设备该接力设备能够提供信号接力服务，并携带接力设备的业务能力信息和当前检测到的网络环境信息。其中，业务能力信息用于指示接力设备所支持处理的业务类型。业务能力信息可以包括Remote SIM服务(即远程SIM卡服务)、语音通话服务、视频通话服务、数据业务服务、短信服务(short messaging service，SMS)、全球定位系统(global positioning system，GPS)服务等。网络环境信息包括蜂窝信号强度、蜂窝通信业务的体验质量(quality of experience，QoE)等。需要说明的是，QoE可以理解为用户体验或者用户感知，即终端用户对移动网络提供的业务性能的主观感受，其可以通过接近量化的方法来表示终端用户对业务与网络的体验和感受，并反映当前业务和网络的质量与用户期望间的差距。
在本实施例中，接力设备可以通过蓝牙(bluetooth，BT)、WiFi、近场通信(near field communication，NFC)技术、设备到设备(device to device，D2D)技术广播第一通知消息；或者，基于WiFi或者蜂窝数据业务通过服务器广播第一通知消息；再或者，基于WiFi或者蜂窝数据业务建立点对点(peer to peer，P2P)连接，广播第一通知消息。用户设备通过监听获得第一通知消息。
可选的，接力设备在广播第一通知消息之前，可以先检测接力设备侧的蜂窝信号强度。若蜂窝信号强度低于强度阈值(例如-95dBm(分贝毫瓦))，则说明接力设备无法保证与网络侧设备的通信质量，因此，接力设备不广播第一通知消息。若蜂窝信号强度大于或者等于强度阈值，则说明接力设备可以保证与网络侧设备的通信质量，因此，接力设备广播第一通知消息。此外，在本实施例中，接力设备也可以不检测蜂窝信号强度而直接广播第一通知消息。
示例性的，当接力设备通过蓝牙广播第一通知消息时，当用户设备进入接力设备的蓝牙覆盖范围之后即可接收到第一通知消息。当接力设备通过WiFi广播第一通知消息时，接力设备可以向局域网内路由器的特定端口发送第一通知消息。局域网内的其他电子设备通过监听该端口接收第一通知消息。
在一些实施例中，接力设备可以不断广播第一通知消息，而用户设备按需对该通知消息进行监听。例如，当用户设备侧蜂窝信号强度低于强度阈值(例如-95dBm)时，监听接力设备广播的第一通知消息。
在另一些实施例中，用户设备可以先按需广播接力设备使用请求，用于主动请求使用接力设备。例如，当用户设备侧蜂窝信号强度低于强度阈值(例如-95dBm)时，广播接力设备使用请求。接力设备在接收到该接力设备使用请求之后，向用户设备回复第一通知消息，以通知用户设备其能够提供信号接力服务。通过本实施例提供的方法，能够减少接力 设备的功耗，节约资源。
S502，用户设备根据第一通知消息，与接力设备协商共同支持的业务能力。
用户设备在接收到第一通知消息后，需要与接力设备进行业务能力协商，确定其共同支持的业务类型。以接力设备支持Remote SIM服务、语音通话服务、视频通话服务、数据业务服务、SMS、GPS服务为例，用户设备需要从中确定其所支持的服务，并将确定结果发送给接力设备。
S503，用户设备和接力设备相互鉴权。
在一些实施例中，用户设备和接力设备可以通过设备账号相互鉴权，若用户设备和接力设备登陆了相同的设备账号，则鉴权通过。
在另一些实施例中，用户设备和接力设备可以通过动态验证码相互鉴权。例如，接力设备在和用户设备完成业务能力协商之后，接力设备可以显示一个动态验证码，并向用户设备发送校验通知。用户设备在接收到校验通知之后，可以显示一个验证码输入界面。用户设备获取用户输入的验证码之后，将输入的验证码发送给接力设备进行校验，若用户发送的验证码和接力设备显示的验证码相同，则鉴权成功。需要说明的是，在该实施例中，用户设备和接力设备相互鉴权通过之后，后续使用时将无需再进行鉴权。
S504，在鉴权通过之后，用户设备和接力设备建立连接。
在鉴权通过之后，用户设备和接力设备可以根据相互的互联网协议(internet protocol，IP)地址建立连接，形成通信链路。
在本实施例中，参见图6所示，接力设备和用户设备之间的通信链路可以是蓝牙链路、WiFi链路或者数据业务链路。其中，蓝牙链路可以是传统蓝牙链路或者低功耗蓝牙(bluetooth low energy，BLE)链路。WiFi链路可以是WiFi局域网链路、WiFi直连链路或者基于WiFi的服务器中转链路。在WiFi局域网链路中，热点设备可以是路由器，也可以是用户设备或者接力设备。当用户设备有两个SIM卡时，数据业务链路可以是用户设备通过SIM卡1与接力设备建立的数据业务链路，或者，通过SIM卡2与接力设备建立的数据业务链路。在数据业务链路中，用户设备和接力设备之间可以P2P的方式连接，也可以通过服务器中转的方式连接。其中，数据业务链路是指接力设备和用户设备之间通过基站建立的通信链路。
此外，针对远场连接，例如接力设备和用户设备通过服务器连接，接力设备和用户设备可以分别采用不同的方式与服务器建立连接。例如，用户设备可以通过WiFi与服务器连接，接力设备可以通过数据业务与服务器连接。
S505，用户设备显示第一提示框，该第一提示框用于提示发现接力设备。
可选的，用户设备可以根据自身的蜂窝信号强度选择是否显示第一提示框。例如，若蜂窝信号强度大于或者等于强度阈值(例如-95dBm)，则说明用户设备能够正常与网络侧设备通信，并正常处理蜂窝通信业务。因此，用户设备可以不显示第一提示框。若蜂窝信号强度小于该强度阈值，则说明用户设备与网络侧设备的通信质量不能保证，因此，用户设备显示第一提示框，以提示用户设备可以通过接力设备接入蜂窝网络。
在本实施例中，第一提示框包括发现接力设备的提示信息、用于选择接力设备的设备选择控件、设置控件等。
在一个示例中，以用户设备是电子设备1为例，当用户设备只安装了一张SIM卡时， 参见图7中的(a)所示，第一提示框中的提示信息可以为“发现更强信号的接力设备电子设备2”。设备选择控件为“授权使用”图标，用于选择使用电子设备2作为接力设备。设置控件可以为“设置”图标，用于对电子设备2进行进一步设置。响应于用户对“授权使用”图标的操作，用户设备将电子设备2作为接力设备，并显示例如图7中的(b)所示的第二提示框，该第二提示框中包括提示信息“本机的蜂窝信号来自电子设备2”，以及“取消设置”图标，用于取消使用电子设备2作为接力设备。
在另一个示例中，以用户设备是电子设备1为例，当用户设备中安装了两张SIM卡时，参见图8中的(a)所示，第一提示框中的提示信息可以为“发现更强信号的接力设备电子设备2”。设备选择控件可以包括“SIM卡1使用”图标和“SIM卡2使用”图标。其中，“SIM卡1使用”图标用于选择将电子设备2作为SIM卡1的接力设备；“SIM卡2使用”图标用于选择将电子设备2作为SIM卡2的接力设备。设置控件为“设置”图标，用于对电子设备2进行进一步设置。响应于用户对“SIM卡1使用”图标的操作，用户设备将电子设备2作为接力设备并显示例如图8中的(b)所示的第二提示框，该第二提示框中包括提示信息“本机SIM卡1的蜂窝信号来自电子设备2”，以及“取消设置”图标，用于取消使用电子设备2作为接力设备。
可选的，第一提示框中还可以包括取消控件，用户取消电子设备1当前显示的第一提示框。示例性的，该取消控件可以为“取消”图标。
可选的，在接力模式下，用户设备侧显示的第二提示框可以不允许取消。当用户设备退出接力模式后，第二提示框自动取消。
需要说明的是，在本申请各实施例中，用户对某一控件、选项或者开关项的操作包括通过触摸操作单击、双击、长按、重力按压等，本实施例对其具体方式不进行限制。
用户设备在选择接力设备之后，接力设备需要访问用户设备的SIM卡中存储的信息(简称SIM卡信息)，才能以用户设备的身份接入蜂窝网络。下面对接力设备访问用户设备SIM卡信息的过程进行说明。
SIM卡信息通常包括用户数据和网络参数。其中，用户数据是用户在使用SIM卡时产生的数据，例如通信录、短消息(short message，SMS)等。网络参数是运营商预先存储在SIM卡中的数据，包括IMSI、移动用户国际综合业务数字网码(mobile subscriber international integrated services digital network，MSISDN)、公共陆地移动网络(public land mobile network，PLMN)标识码、加密相关数据、鉴权算法与参数、集成电路卡识别码(integrate circuit card identity，ICCID)、IP多媒体子系统(IP multimedia subsystem，IMS)公共用户身份标识(public user identity，IMPU)、IP多媒体子系统私有用户标识(IMS private user identity，IMPI)、DOMAIN(域名)、代理呼叫会话控制功能地址(proxy call session control function address，P-CSCF)、固定拨号号码(fixed dialing numbers，FDN)、SMS parameters(短消息中心号码)、被禁止的PLMN(forbidden PLMN，FPLMN)，高优先级PLMN(higher priority PLMN，HPPLMN)、带接入技术的HPLMN(home PLMN，归属PLMN)选择器(HPLMN selector with access technology，HPLMNwAcT)、运营商控制的HPLMNwAcT(operator controlled HPLMNwAcT，OPLMNwAcT)、用户控制的HPLMNwAcT(user controlled HPLMNwAcT，OPLMNwAcT)等。
其中，IMSI可以理解为SIM卡的唯一用户标识(Identifier，ID)，用于区分每一个用 户。IMSI包括：移动国家代码(mobile country code，MCC)、移动网络代码(mobile nation code，MNC)和移动订户识别代码(mobile subscription identification number，MSIN)。MCC的长度通常为3位；MNC的长度由MCC的值决定，可以是2位(欧洲标准)或3位数字(北美标准)。MSIN的值由运营商分配。例如，IMSI可以为：460001234567890，其中，MCC为460，MNC为00，MSIN为1234567890。
MSISDN也称作手机号码，例如8613912345678。MSISDN包括国家码(country code，CC)、国内目的地码(national destination code，NDC)和客户号码(subscriber number，SN)。不同国家的CC不同，例如中国的CC为86。NDC也称网络接入码，由各个国家的通信主管部门分配给各个网络运营商。例如，中国移动网络接入码为134～139、150～152、188等，中国联通为130～132、185～186等，中国电信为133、153、180、189等。SN由网络运营商分配给用户。
PLMN是一个无线通讯系统，用于为公众提供陆地移动通信业务。PLMN标识码用于标识不同运营商，即不同的移动通信运营商通常有不同的PLMN。PLMN标识码＝MCC+MNC，例如46000、46001等。
ICCID也称为SIM卡的卡号，用于唯一标识一个SIM卡，即IC卡标识。IMPU为电子设备进行网络注册、处理IMS业务时的用户身份标识。
IMPU是电子设备与其他电子设备通信时的身份标识，可以被公布。IMPU用于会话初始协议(Session Initiation Protocol，SIP)消息的路由。
IMPI为用于在用户接入IMS网络的过程中注册、鉴权、认证和计费的标识，不用于呼叫的寻址和路由。IMPI是由归属网络运营商定义的用户身份标识，具有全球唯一性。
P-CSCF是IMS拜访网络的统一入口点。所有IMS终端发起和终止于IMS终端的会话消息都要通过P-CSCF。
鉴权参数包括用户秘钥(key identifier，KI)、运营商根秘钥(Operator Variant Algorithm Configuration Field，OP)，以及OPC(鉴权秘钥)。
用户在运营商网点开户时，运营商会给用户分配一个特定的KI，保存在SIM卡和核心网的归属用户服务器(home subscriber server，HSS)中，SIM卡中和HSS中的KI是一致的。为了保密，SIM卡中的KI是烧制在卡中的，不可向外读取，以保证数据安全。KI是整个AKA鉴权和加密机制的核心，鉴权和加密的过程实质是核实KI的过程。
OP属于运营商可变算法配置域，一个运营商的所有用户可以使用相同的OP，以区别其他运营商的用户。一般情况下，一个运营商只有一个OP，为了避免所有卡片预置同一个OP所带来的安全风险，目前很多运营商均采用在SIM卡中预置OPC，OPC是由OP和KI经过一系列运算后得到的，这样就确保了不同卡片预置不同的OPC，无法通过一张卡片的OPC反算出运营商的OP。其中，OP和OPC是SIM卡鉴权的重要参数。
在本实施例中，接力设备和用户设备可以通过客户机/服务器(Client/Server，C/S)模式访问用户设备的SIM卡信息。即接力设备作为客户机向用户设备发送SIM卡信息获取请求，用户设备作为服务器，在接收到该请求之后向接力设备发送SIM卡信息。
图9是本申请实施例提供的远程SIM卡访问方法的流程图，涉及接力设备基于C/S模式访问用户设备SIM卡信息的过程，具体包括如下步骤。
S901，用户设备的AP向接力设备的Modem发送第一设置命令，用于将该接力设备的 Modem设置为客户机模式。
S902，用户设备的AP向本地的Modem发送第二设置命令，用于将本地的Modem设置为服务器模式。
其中，第一设置命令和第二设置命令可以通过注意(attention，AT)命令的形式发送。此外，本实施例对S901和S902之间的先后顺序不进行限制。
S903，接力设备的Modem向用户设备的AP发送SIM卡信息获取请求。
S904，用户设备的AP将SIM卡信息获取请求转化为Modem可读的形式。
S905，用户设备的AP将转化后的SIM卡信息获取请求发送给本地的Modem。
S906，用户设备的Modem访问SIM卡，并将SIM卡信息发送给本地的AP。
需要说明的是，在S906中，用户设备的Modem发送给本地AP的SIM卡信息是AP可读的形式，因此，用户设备的AP需要将其转化为Modem可读的形式之后，再将其发送给接力设备的Modem进行处理。
S907，用户设备的AP将SIM卡信息转化为Modem可读的形式。
S908，用户设备的AP将Modem可读的SIM卡信息发送给接力设备的Modem。
在SIM卡信息中，OPC、IMSI、MSISDN、PLMN、ICCID、IMPU、IMPI、P-CSCF、FDN、SMS、SMSP、FPLMN、HPPLMN、HPLMNwAcT、HPLMNwAcT、OPLMNwAcT、PLMNwAcT等信息是可以被接力设备读取的。而KI、OP、OPC等参数是不能够被接力设备读取。接力设备在使用SIM卡信息鉴权的过程中，将网络侧下发的随机数(random challenge，RAND)和鉴权令牌(authentication token，AUTN)等参数发送给用户设备，以由用户设备在SIM卡上使用OPC等进行鉴权运算，生成回复消息(response，RES)、保密秘钥(confidentiality key，CK)和完整性秘钥(integrity key，IK)等信息，其中RES由接力设备读取并发给网络侧设备进行校验。
在一些实施例中，接力设备可以采用实时读取模式，读取用户设备的所有的SIM卡信息。例如，IMSI、PLMN、加密相关数据、鉴权数据、通讯录、短消息等。
在另一些实施例，接力设备可以同时采用实时读取模式和预先缓存模式混合的形式，读取用户设备的SIM卡信息。在本实施例中，接力设备实时读取的数据类型包括鉴权数据，预先缓存的数据包括IMSI、PLMN、加密相关数据、通讯录、短消息等。对于预先缓存的数据，当接力设备需要使用该数据时，直接从本地读取即可，具有较快的数据读取速度。
在接力设备预先缓存的SIM卡信息中，IMSI、MSISDN、PLMN标识码、加密相关数据、鉴权算法与参数、ICCID、IMPU、IMPI、DOMAIN、P-CSCF等参数通常不会发生变化。而FDN、SMS、SMSP、FPLMN、HPPLMN、HPLMNwAcT、OPLMNwAcT、PLMNwAcT等参数是可能会更新或者用户被修改。因此，对于预先缓存的数据，接力设备可以给不同类型的数据设置不同的老化周期(也称作更新周期)，当预先缓存的数据到达老化周期之后，接力设备从用户设备侧重新获取对应的数据。
例如，可以将IMPI、IMPU的老化周期设置为无限大，缓存后可以不用更新。将SMS、FDN的老化周设置为60min，每60min从用户设备的SIM中重新读取一次。而将HPLMNwAcT、OPLMNwAcT、PLMNwAcT、FPLMN的老化周期设置为3min，每3min从用户设备的SIM中重新读取一次。而将加密相关数据、ICCID的老化周期设置为0，不能缓存，接力设备需要从用户设备实时进行读取。
图10是本申请实施例提供的SIM卡信息读取方式示意图一，示出了SIM卡信息的实时读取模式和预先缓存模式。如图10所示，接力设备包括Modem1和AP1，AP1中设置有缓存区和通信模块1。用户设备包括Modem2、AP2、SIM卡1和SIM卡2，AP2中设置有通信模块2。通信模块1和通信模块2之间可以通过蓝牙、WiFi或者数据业务的方式通信。
在实时读取模式下，当接力设备读取用户设备的SIM卡信息时，Modem1将SIM卡信息读取请求通过通信模块1发送给通信模块2，再由通信模块2发送给Modem2。响应于SIM卡信息读取请求，Modem2从对应的SIM卡中读取SIM卡信息，并将SIM卡信息通过通信模块2发送给通信模块1，再由通信模块1发送给Modem1。
在预先缓存模式下，接力设备在确定为用户设备提供信号接力服务之后，若接力设备支持Mirror SIM功能(即镜像SIM卡功能)，则AP1即生成SIM卡信息获取请求，并将其通过通信模块1、通信模块2发送给Modem2。响应于SIM卡信息读取请求，Modem2从对应的SIM卡中读取SIM卡信息，并将SIM卡信息通过通信模块2发送给通信模块1。通信模块1在接收到SIM卡信息之后，将其存储在缓存区内。当Modem1需要使用缓存数据时，直接从缓存区中读取即可。在预先缓存模式下，接力设备可以基于一次请求从用户设备读取较多的数据，因此，相对于接力设备按需实时读取，通过预先缓存模式读取通信数据可以减少接力设备访问用户设备SIM卡的次数。
图11是本申请实施例提供的SIM卡信息读取方式示意图二，示出了SIM卡信息的另一种实时读取模式和预先缓存模式。如图11所示，接力设备包括Modem1、AP1和通信模块1，用户设备包括Modem2、AP2和通信模块2。通信模块1和通信模块2之间可以通过蓝牙、WiFi或者数据业务的方式通信。
在实时读取模式下，当接力设备有读取用户设备SIM卡信息的需求时，Modem1将SIM卡信息读取请求依次通过AP1、通信模块1、通信模块2、AP2发送给Modem2。响应于SIM卡信息读取请求，Modem2从对应的SIM卡中读取SIM卡信息，并将SIM卡信息依次通过AP2、通信模块2、通信模块1、AP1发送给Modem1。
在预先缓存模式下，接力设备在确定为用户设备提供接力服务之后，若接力设备支持Mirror SIM功能(即镜像SIM卡功能)，则AP1即生成SIM卡信息获取请求，并将其通过通信模块1、通信模块2、AP2发送给Modem2。响应于SIM卡信息读取请求，Modem2从对应的SIM卡中读取SIM卡信息，并将SIM卡信息依次通过AP2、通信模块2、通信模块1发送给AP1。AP1在接收到SIM卡信息之后，将其存储在本地的缓存区内。当Modem1需要使用缓存数据时，直接从缓存区中读取即可。通过预先缓存模式读取通信数据可以减少接力设备访问用户设备获取SIM卡的次数。
此外，在图11中，接力设备的通信模块1也可以设置在Modem1上，用户设备的通信模块2也可以设置在Modem2上。
为了实现接力设备从用户设备读取SIM卡信息，接力设备和用户设备需要支持特定的数据访协议，例如远程SIM卡访问协议(remote SIM access profile，rSAP)、虚拟SIM(virtual SIM，VSIM)访问协议等。
在一些实施例中，接力设备可以基于rSAP访问用户设备的SIM卡。rSAP包括客户机侧的rSAP(即rSAP-c)和服务器侧的rSAP(即rSAP-s)两部分。其中，接力设备的Modem 需要支持rSAP-c，用户设备的Modem需要支持rSAP-s，接力设备和用户设备通过rSAP-c与rSAP-s模式的对接。
在另一些实施例中，接力设备不支持rSAP-c，但支持VSIM访问协议，而用户设备支持rSAP-s。此时，当接力设备支持VSIM与rSAP-c相互转化的功能时，在SIM卡信息读取过程中，接力设备可以将VSIM协议消息转化成rSAP-c消息，以便发送给用户设备。并且，接力设备可以将接收到的rSAP-c消息转化为VSIM协议消息，实现接力设备和用户设备通过VSIM与rSAP-s模式的对接。
接力设备在获取到用户设备的SIM卡信息之后，即可使用SIM卡信息中的IMSI作为身份标识接入蜂窝网络，每间隔预设时间向网络侧设备上报自身的跟踪区更新(tracking area updating，TAU)信息，与网络侧设备建立连接。
此外，可选的，当接力设备成功使用用户设备的SIM卡信息接入蜂窝网络之后，可以突出显示接力设备上对应的信号强度指示图标，例如，将信号强度指示图标显示为红色。
接力设备在通过用户设备的SIM卡信息与网络侧设备建立连接之后，即可在网络侧设备和用户设备之间接力传输蜂窝通信数据。具体如下所示。
图12是本申请实施例提供的信号接力通信过程中数据传输路径的示意图。接力设备在网络侧设备和用户设备之间中转蜂窝通信数据。
在一些实施例中，参见图12中的路径1所示，接力设备直接和用户设备通信。具体地，用户设备将上行的蜂窝通信数据发送给接力设备，接力设备再将其发送给网络侧设备。网络侧设备将下行蜂窝通信数据发送给接力设备，再由接力设备直接发送给用户设备。
在另一些实施例中，参见图12中的路径2所示，当接力设备和用户设备之间的通信链路质量差或者无法建立通信链路时，接力设备和用户设备可以通过至少一个转发设备通信。具体地，用户设备可以将上行蜂窝通信数据由转发设备发送给接力设备，接力设备再将其发送给网络侧设备。网络侧设备可以将下行蜂窝通信数据发送给接力设备，再由接力设备通过转发设备发送给用户设备。
在本实施例中，转发设备转发蜂窝通信数据的过程可以参见图13所示，转发设备中设置有数据接收单元和数据转发单元。数据接收单元用于接收接力设备发送的下行蜂窝通信数据，以及用户设备发送的上行蜂窝通信数据，并将其发送给数据转发单元。数据转发单元用于向用户设备发送下行蜂窝通信数据，以及向接力设备发送上行蜂窝通信数据。
图14是本申请实施例提供的信号接力通信的原理示意图。参见图14所示，接力设备包括应用处理器、语音对等(vioce peer，Vpeer)模块、系统总线和Modem。此外，接力设备可以包括音视频外设，也可以不包括。
应用处理器包括网络管理模块、通信软件开发工具包(software development kit，SDK)、无线接口层(radio interface layer，RIL)、基于远程直接数据存取(remote direct memory access，RDMA)的网卡(RDMA-aware network interface controller，RNIC)。其中，网络管理模块包括流量控制单元和路由管理单元，流量控制单元用于管理蜂窝数据流量，例如统计已使用的流量。路由管理单元用于管理数据的传输路径。RNIC用于负责产生RDMA数据包和接收输入的RDMA数据包，从而消除传统操作中多余的内存复制操作，使得AP/Modem的网卡数据快速搬迁。通信SDK包括通信管理单元、语音收发单元、连接与传输单元以及安全管理单元。通信管理单元用于管理通信业务，将从网络侧设备接收到的下行蜂窝通 信数据发送给用户设备。语音收发单元用于接收或者发送信号接力的通信数据。连接与传输单元用于管理与用户设备建立连接以及数据的传输。安全管理单元，用于在建立信号接力连接过程中进行鉴权，以及对信号接力通信过程中相关的数据进行加密和解密。RIL是用于和Modem进行交互的接口层，在用户设备中，RIL被设置为远程SIM卡的客户端模式。Vpeer用于处理和传输语音数据。
系统总线可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。
Modem包括IMS协议栈、HiFi模块以及模拟内存模块(the utah simulated memory module，USIMM)。其中，IMS协议栈是VoLTE、VoNR等通话的协议栈，用于和IMS核心网完成信令交互和媒体协商。HiFi模块用于语音包的编解码、3A等算法处理。USIMM用于管理SIM卡读写操作。
音视频外设包括扬声器、受话器、麦克风、摄像头、屏幕等。扬声器也称“喇叭”，用于将音频电信号转换为声音信号。电子设备可以通过扬声器收听音乐，或收听免提通话等。受话器也称“听筒”，用于将音频电信号转换成声音信号。当电子设备听电话或语音信息时，可以通过将受话器靠近人耳接听语音。麦克风也称“话筒”或“传声器”，用于将声音信号转换为电信号。当拨打电话或发送语音信息时，用户可以通过人嘴靠近麦克风发声，将声音信号输入到麦克风。摄像头用于捕获静态图像或视频。屏幕用于显示静态图像或者视频。
用户设备包括应用处理器、编码解码器(coder-decoder，Codec)、系统总线、Modem、SIM卡和音视频外设。其中，系统总线、Modem和音视频外设的具体内容请参见前文描述，本实施例在此不进行赘述。
用户设备的应用处理器也包括网络管理模块、通信SDK、RNIC和RIL。但与接力设备不同的是，网络管理模块包括虚拟设备管理单元。其中，虚拟设备管理单元用于管理信号接力通信过程中的虚拟设备，即接力设备。RIL包括切换管理单元，用于管理RIL和Modem的映射。此外，RIL还被设置为远程SIM卡服务端，用于从SIM卡中获取SIM卡信息，并将其发送给接力设备。
Codec是用于对音频信号进行A/D和D/A转换的处理芯片。A/D转换是指将人耳能够听到的模拟信号(Analog)转换为电脑能够处理的数字(Digital)信号的编码过程。D/A就是将处理后的数字信号转换为人耳能够听到的模拟信号的解码过程。在本实施例中，
Codec和系统总线之间通过串行低功耗芯片间媒体总线(Serial Low-power Inter-chip Media Bus，SLIMBUS)连接。SLIMBUS是移动产业处理器接口(mobile industry processor interface，MIPI)联盟指定的一种音频接口，用于连接基带/应用处理器和音频芯片，总线协议保证既能发控制信息，又能发数据信息。
在信号接力通信的过程中，相关的通信数据包括控制信令和媒体数据(如通话数据包)，下面分别对控制信令和媒体数据在接力设备和用户设备之间的传输过程进行说明。
以通话为例，针对控制信令，用户设备在获取用户输入的通话控制命令之后，通过RIL模块将其发送给本地通信SDK模块，由本地的通信SDK模块发送给接力设备的通信SDK模块。接力设备的通信SDK通过RIL接口调用并驱动Modem执行控制命令。在本实施例中，该通话控制命令包括通话拨打命令、通话挂断命令、通话查询命令等。
当接力设备接收到网络侧设备的来电通知之后，通过本地的RIL接口将调用通信SDK的通信管理模块，通过通信管理模块将来电通知发送给用户设备的通信SDK模块。用户设备的通信SDK模块在接收到来电通知之后，调用RIL接口将来电通知并上报给AP的应用程序框架层，以由用户设备显示来电界面。
针对媒体数据，当电话接通之后，接力设备的Modem从网络侧设备接收下行蜂窝通信数据包，接力设备的通信SDK模块从Modem获取下行蜂窝通信数据包，并将该数据包发送给用户设备的通信SDK模块。用户设备的通信SDK模块，通过RIL接口调用本地的音视频外设播放下行通话数据包所携带的相关内容。此外，用户设备在采集到上行通话数据包之后，由本地的通信SDK将上行通话数据包发送给接力设备的通信SDK模块，接力设备的通信SDK模块再将该上行通话数据包传送给Modem，Modem通过空口将其发送给网络侧设备。
此外，对于上网、短信等蜂窝通信业务，其控制信令的传输路径与上述通话过程中的控制信令的传输路径相同。对于用户设备在运行过程中产生的应用数据，用户设备首先对应用数据进行标记，将不同类型的应用数据进行区分，再将标记后的数据发送到对应的设备或组件。例如，将应用数据标记为蜂窝业务数据、非蜂窝业务数据。将蜂窝业务数据发送给接力设备，将非蜂窝业务数据发送给WiFi网卡等。
下面结合具体的业务场景，对本申请实施例提供的通信方法进行示例性说明。
场景一：近场信号接力
在家里，由于信号遮挡等原因，很多时候阳台的蜂窝信号较好，而卧室或者地下室的蜂窝信号较差。当用户在卧室或者地下室打电话或者上网的过程中，就会出现通信质量异常等情况，用户体验不佳。基于此，参见图15所示，可以在家中蜂窝信号较好的地方(例如阳台)放置接力设备(例如CPE、其他手机等)，用户设备与接力设备可以近场通信技术与接力设备连接，使用接力设备实现蜂窝信号接力，访问蜂窝网络。其中，近场通信技术可以为WiFi局域网、WiFi P2P、蓝牙、NFC等通信技术。
通过本实施例提供的方法，当用户在家中时，即使在卧室或者地下室打电话也能够保证通话流畅，且不需要移动至阳台去接打电话。针对短信等业务场景，能够提高短信的收发速率，改善短信到达用户设备的时延。针对上网等业务场景，能够提高网页的刷新速率。
场景二：远场信号接力
当用户在户外或者餐厅、商场等场所时，由于蜂窝信号覆盖不到，或者建筑物遮挡等原因，用户设备侧的蜂窝信号强度可能也较差。此时，参见图16所示，若用户家中有接力设备且该接力设备已连接WiFi或者已打开蜂窝数据，用户设备可以使用远场通信技术与接力设备建立连接，使用接力设备访问蜂窝网络。其中，远场通信技术包括基于WiFi或数据业务的P2P连接，或者基于WiFi或数据业务的服务器中转连接等。
其中，当接力设备与用户设备通过WiFi P2P连接时，由于两个电子设备分别处于不同的网关，其无法直接根据对方的IP地址相互访问。此时，电子设备可以采用网络地址转换(Network Address Translators，NAT)技术将自身的IP地址和端口号转换为可以被对方访问的IP地址和端口号，使两个电子设备能够连接成功。
在本实施例提供的方法，当用户在餐厅、商场时，可以不需要再移动至露天区域去接打电话。针对短信等业务场景，能够提高短信的收发速率，改善短信到达用户设备的时延。 针对上网等业务场景，能够提高网页的刷新速率。
场景三：功耗转移，节省电量
在日常生活中，经常会遇到用户设备电量低(例如电量低于20％)且不便于充电的场景。此时，参见图17所示，若用户或者用户周边的亲友携带有其他具有蜂窝通信功能的电子设备(如平板电脑、手机、笔记电脑等)，用户设备将其他电子设备作为接力设备，通过接力设备访问蜂窝网络。
可选的，当用户设备电量低于预设值时，若用户设备检测到接力设备，可以显示第一提示框，以提示用户使用接力设备。该提示框中可以包括发现接力设备的提示信息、用于选择接力设备的设备选择控件、设置控件等。示例性的，参见图18中的(a)所示，该第一提示框中的提示信息可以为“电量低，是否使用接力设备电子设备2”。设备选择控件为“授权使用”图标，用于选择使用电子设备2作为接力设备。设置控件可以为“设置”图标，用于对电子设备2进行进一步设置。响应于用户对“授权使用”图标的操作，用户设备将电子设备2作为接力设备，并显示例如图18中的(b)所示的第二提示框，该第二提示框中包括提示信息“本机的蜂窝信号来自电子设备2”，以及“取消设置”图标，用于取消使用电子设备2作为接力设备。
在用户设备通过接力设备访问蜂窝网络的过程中，由接力设备驻网待机，不仅可以节省用户设备的电量，而且能够正常处理蜂窝通信业务，不漏接电话、漏收短信。
或者，用户设备也可以在图4中的(f)所示的界面中，将本次接力通信的业务处理模式设置为“仅接力设备”，将蜂窝通信业务转移至接力设备进行处理，以进一步节省用户设备的电量。
此外，在一些实施例中，为了保证用户设备的通话质量，可以在图4中的(f)所示的界面中，将信号接力的驻网模式设置为全模式，以由接力设备根据自身的驻网方式全力驻网。或者，为了便于用户处理蜂窝通信业务，可以将信号接力的业务处理模式设置为“同时处理”，即用户设备与接力设备均可处理。或者，为了减少接力设备的流量损耗，可以关闭流量共享。
在上述场景一和场景二，以及场景三的一些实施例中，信号接力过程中的业务处理模式是“仅用户设备”模式。接力设备作为中间设备在用户设备和网络侧设备之间转发数据，蜂窝通信业务的实际处理设备是用户设备。下面对用户设备作为业务处理设备，处理蜂窝通信业务的过程进行说明。
参见图19所示，图19示出了用户设备作为业务处理设备接听电话的过程，具体包括如下步骤S1901-S1909。
S1901，网络侧设备将来电通知发送给接力设备。
S1902，接力设备将来电通知发送给用户设备。
S1903，用户设备在接收到来电通知之后，显示来电界面。参见图20所示，来电界面包括用户图像、来电号码、接听控件、拒接控件等。
S1904，响应于用户对电话接听控件的操作，用户设备向接力设备发送电话接听通知。
S1905，接力设备向网络侧设备发送电话接听通知。
S1906，网络侧设备向接力设备发送下行通话数据包。
S1907，接力设备向用户设备发送下行通话数据包。
S1908，用户设备向接力设备发送上行通话数据包。
S1909，接力设备向网络侧设备发送上行通话数据包。
通过上述步骤S1901-S1909，在接力模式下，用户设备不仅可以通过接力设备的蜂窝信号访问网络侧设备，提高通话质量，还能够在本地接听电话，具有较好的用户体验。
场景四：实现CPE与SIM卡分离，将SIM卡从室外转移至室内
通常情况下，当室内蜂窝信号差时，为了提高用户在室内上网的流畅度，用户可以在室外放置一个CPE，将CPE作为WiFi热点为用户设备提供上网服务。当CPE上安装有配置SIM卡，用户设备在连接CPE之后即可使用CPE上SIM卡的流量，通过CPE间接访问蜂窝网络。然而，一些CPE上安装的SIM卡是裸露在CPE壳体的外表面的，当该类CPE放置在室外时，不仅其表面的SIM卡经常会经受日晒，存在SIM卡基材被融化的风险，而且存在被盗窃的风险。此外，CPE上的SIM卡通常需要螺丝安装固定，对于已经安装在室外的CPE，SIM卡的拆卸非常不方便。
为此，参见图21所示，用户可以在家中的路由器上安装SIM卡，将路由器(用户设备)和CPE(接力设备)通过网线进行连接，以由CPE通过网线从路由器中读取到SIM卡信息，并根据SIM卡信息访问蜂窝网络。SIM卡的读取方式可参见前文描述，本实施例在此不进行赘述。此外，CPE根据SIM卡信息访问蜂窝网络的方式也请参见现有CPE，本实施例在此也不进行赘述。
通过本实施例提供的方法，可以将室外CPE上的SIM卡转移至室内设备中，避免了SIM卡被盗窃以及由于日晒被损坏的风险。此外，相比于从已安装在室外的CPE上拆装SIM卡，从室内的路由器上拆装SIM卡更加的方便。
场景五：CPE在不插SIM卡的场景下做WiFi热点
基于前文描述可知，目前，CPE上通常需要安装一张配置有流量的SIM卡才能为用户设备提供上网服务。因此，通常情况下，为了维持CPE的正常运行，用户需要额外为CPE维护一张SIM卡，每月缴纳相应的费用，耗费用户精力。
为此，参见图22所示，CPE可以不安装SIM卡，而是通过WiFi热点与用户设备(如手机)建立连接，通过Remote SIM技术访问用户设备的SIM卡信息，并使用用户设备的SIM卡信息注册并访问蜂窝网络。在用户设备的打开流量共享的情况下，其他电子设备在使用CPE上网的过程中，实际上消耗的是用户设备SIM卡的流量。通过本实施例提供的方法，用户无需额外为CPE维护一张SIM卡，节约用户精力。
可选的，用户设备可以在图4中的(f)所示的界面中将接力设备驻网模式设置为全模式，以便CPE根据自身的驻网方式全力驻网，提高通信质量。用户设备还可以将业务处理模式设置为“仅用户设备”，以便在用户设备侧处理蜂窝通信业务。
此外，相对于使用手机直接做WiFi热点供室内其他电子设备使用时，能够减少手机的耗电量，避免用户频繁给手机充电。
场景六：手机遗留在家里，电话不漏接。
在日常生活中，用户出门可能会忘记或者不便于随身携带手机。此时，若用户想要接听该手机的来电或者使用该手机号码拨打电话，可以使用另一电子设备作为该手机的接力设备访问网络侧设备，并代理用户设备处理蜂窝通信业务。也就说，接力设备在获取用户设备的SIM卡信息之后，代替用户设备访问蜂窝网络，并处理蜂窝通信业务。
图23是本申请实施例提供的在接力设备上选择用户设备的过程示意图，涉及接力设备根据用户指令搜索确定用户设备的过程。参见图23中的(a)所示，对于电子设备而言，在信号接力界面中，响应于用户打开“成为接力设备”开关项的操作，该电子设备即成为接力设备。电子设备在成为接力设备之后，可以开始广播前文所述的第一通知消息，以便其他电子设备发现该接力设备。此外，参见图23中的(b)所示，接力设备也可以在“成为接力设备”开关项的下方显示“搜索用户设备”选项，以根据用户指令主动搜索可用的用户设备(简称可用设备)。响应于用户对“搜索用户设备”选项的操作，用户设备显示例如图23中的(c)所示的可用设备界面，该界面中包括接力设备的可用设备，例如电子设备2、电子设备3和电子设备4。响应于用户选择用户设备(例如电子设备2)的操作，参见图23中的(d)所示，接力设备与电子设备2建立连接，代替电子设备2处理蜂窝通信业务。在本实施例提供的场景中，接力设备与用户设备可以基于WiFi或蜂窝数据业务通过云服务器连接，也可以基于WiFi或蜂窝数据业务通过P2P连接。
在上述过程中，可选的，接力设备可以通过云服务器搜索被代理设备(即用户设备)。具体地，一些用户可能同时拥有多个电子设备，例如手机、智能手表、平板电脑等，各个电子设备通过登录设备账号与对应的云服务器建立连接。若这些电子设备登录同一设备账号，则云服务器认为这些电子设备属于同一用户。对于同一用户的电子设备，云服务器可以在各个电子设备之间共享数据。基于此，接力设备在检测到用户操作“搜索用户设备”选项时，可以通过云服务器查询与接力设备属于同一用户的其他电子设备，例如电子设备2、电子设备3和电子设备4。
接力设备在与用户设备建立连接之后，即可访问用户设备的SIM卡信息，并根据该SIM卡信息访问网络侧设备，代理用户设备处理蜂窝通信业务。此时，接力设备可以显示第三提示框，以提示用户其当前正在为其他电子设备提供信号接力服务。示例性的，参见图24所示，该第三提示框中包括提示信息和取消控件。示例性的，该提示信息可以为“本机正在为如下设备提供信号接力服务电子设备2”。该取消控件可以为“取消授权”图标，用于取消接力设备当前提供的信号接力服务。
图25是本申请的一个实施例提供的基于接力设备的通信方法的流程图。在本实施例中，信号接力的业务处理模式是“仅接力设备”，涉及接力设备借用用户设备的SIM卡信息访问网络侧设备，并处理用户设备的蜂窝通信业务的过程。
S2501，接力设备向用户设备发送SIM卡信息获取请求。在本实施例中，接力设备可以通过云服务器向用户设备发送SIM卡信息获取请求，也可以通过接力设备与用户设备之间的WiFi/蜂窝业务数据P2P链路向用户设备发送SIM卡信息获取请求。
S2502，用户设备接收接力设备发送的SIM卡信息。在本实施例中，用户设备可以通过云服务器向接力设备发送SIM卡信息，也可以通过接力设备与用户设备之间的WiFi/蜂窝业务数据P2P链路向用户设备发送SIM卡信息。
S2503，接力设备根据SIM卡信息与网络侧设备建立连接。
S2504，网络侧设备向接力设备发送来电通知。
S2505，接力设备根据来电通知在本地显示来电界面。
S2506，响应于用户的接听操作，接力设备向网络侧设备发送接听通知。
S2507，网络侧设备向接力设备发送下行通话数据包，并根据下行通话数据包播放下 行通话音/视频。
S2508，接力设备采集上行通话音/视频，根据上行通话音/视频形成上行通话数据包，并向网络侧设备发送上行通话数据包。
需要说明的是，对于VoLTE、VoNR等通话，接力设备需要具有IMS协议栈和语音编解码能力。基于此，当接力设备接收到RTP形式的下行通话数据包之后，才能够将其解析为PCM码流在本地进行播放。以及，采集上行语音数据的PCM码流，直接将其转化为RTP形式的上行通话数据包，或者对PCM码流编码后将其转化为RTP形式的上行通话数据包。此外，对于CS、CS fallback等通话，接力设备需要具有CS协议栈和语音编解码能力。示例性的，该接力设备可以为手机、平板电脑、智能手表等。
此外，在其他一些实施例中，用户还可以在接力设备侧使用用户设备的SIM卡信息拨打电话、收发短信、上网等。
通过本申请实施例提供的通信方法，当用户出门后未携带用户设备时，可以通过其他电子设备获取用户设备的SIM卡信息，代理用户设备接入蜂窝网络并处理通话、短信、上网等蜂窝通信业务，避免遗漏电话，具有较好的用户体验。
场景七：用户佩戴智能手表在户外跑步时，不漏接手机的电话
由于手机尺寸较大、携带不方便，用户在运动过程中(例如在户外跑步时)，通常不会携带手机，而是选择佩戴智能手表。为了在运动的过程中不漏接将手机的电话，用户可以提前将手机的电话通过呼叫转移的方式，转移至智能手表上。但是，呼叫转移存在延时较长(一般在30s左右)、用户不能在智能手表侧使用手机的号码拨打电话、运营商需要向呼叫转移的转接方(即手机用户)收取转接费用等问题，用户体验不佳。
为此，参见图26A所示，用户可以将手机作为用户设备，将智能手表作为接力设备，以由智能手表替代手机访问蜂窝网络并处理蜂窝通信业务。在本实施例中，当智能手表上安装有SIM卡，智能手表可以通过蜂窝数据业务与手机建立连接。或者，智能手表也可以通过WiFi连接、蓝牙等方式与手机连接。再或者，智能手表可以通过蓝牙连接电子设备1，再通过电子设备1的WiFi与手机连接。
此外，很多手机支持安装两张SIM卡，如SIM卡1和SIM卡2。针对上述用户忘记或者不便于随身携带手机等用户设备的场景，当智能手表已代替手机使用SIM卡1接入蜂窝网络的场景，若手机的SIM卡2来电，用户仍然会错过接听。
为此，在一些实施例中，当智能手表有两个空闲的Modem时，接力设备既可以获取SIM卡1的信息和SIM卡2的信息，从而同时代替用户设备使用SIM卡1和SIM卡2接入蜂窝网络，并在接力设备侧处理蜂窝通信业务。基于此，无论是用户设备SIM卡1来电，还是SIM卡2来电，用户均可以在接力设备侧进行接听。此外，用户也可以在接力设备侧使用SIM卡1和SIM卡2处理其他蜂窝通信业务，例如打电话、发短信、上网等。
在另一些实施例中，参见图26B所示，当手机的SIM卡2来电之后，用户设备可以基于手机和智能手表当前的通信链路，将来电通知到智能手表，由智能手表显示来电界面。当用户在智能手表侧接听来电之后，网络侧设备将下行通话数据发送给手机，再由手机将其发送给智能手表，由智能手表播放。并且，由智能手表本地采集上行通话数据，并将上行通话数据发送给用户设备，再由用户设备发送给网络侧设备。
场景八：手机“替代”CPE进行最优位置推荐
通常情况下，CPE中安装有SIM卡，用户需要在室内选择一个蜂窝信号较好的位置来放置CPE，以保证CPE的蜂窝通信质量。目前，用户选择CPE放置位置的方式是，在室内选择多个位置进行蜂窝信号强度检测，在手机对应的CPE管理应用(如智慧生活)中查看蜂窝信号强度的大小，人工确定给一个蜂窝信号强度较大的位置来放置CPE。但是，CPE通常需要插上电源才能工作，受电源线长度的限制以及CPE比较笨重等因素的影响，CPE不便于移动，这就影响了CPE安置位置的选择。
为此，用户可以参照图27所示，将便携式用户设备(如手机)设置为接力设备，并确定CPE作为用户设备，与CPE通过近场通信技术连接。此后，手机即可通过Remote SIM技术访问CPE中的SIM卡信息，通过该SIM卡信息访问蜂窝网络。在本实施例中，用户需要将接力设备驻网模式设置为用户设备模式，以便手机根据CPE的驻网方式驻网，代替CPE在室内自由移动，确定CPE放置位置。在本实施例中，手机仍然可以通过CPE管理应用(如智慧生活)显示CPE蜂窝信号强度的大小，以供用户参考。或者，用户也可以直接根据手机当前的信号强度来确定CPE的放置位置。
通过本实施例提供的方法，用户无需移动CPE，而是通过移动手机确定CPE的放置位置的过程中，操作方便。
此外，相对于直接使用手机安装CPE的SIM卡，在室内移动检测各个位置的蜂窝信号强度，本实施例提供的方法的检测结果更为准确。这是由于手机和CPE的频段、载波聚合(Carrier Aggregation，CA)等通信规则不同，因此，手机的蜂窝信号强度并不能准确表示CPE的蜂窝信号强度。
场景九：套餐分享
CPE中的SIM卡通常办理的是移动宽带(mobile Broad band，MBB)流量套餐，其套餐费用相对于手机SIM卡套餐便宜很多。为此，在本实施例中，也可以参见图27所示，将CPE作为用户设备，将手机作为接力设备通过Remote SIM技术访问CPE的SIM卡信息，通过CPE的SIM卡访问蜂窝网络，执行上网等蜂窝通信业务。应理解，在手机使用CPE的SIM卡上网的过程中，消耗的是CPE SIM卡的流量，能够节约手机SIM卡的流量。
需要说明的是，在本实施例中，多个家庭成员的用户设备均可以使用该CPE，使用其流量上网，节省整个家庭的上网费用。
场景十：提升蜂窝通信能力
不同用户设备(例如手机)的蜂窝通信能力可能不同，例如手机1最高支持第五代移动通信技术(5th generation mobile networks，5G)，而手机2最高支持第四代移动通信技术(4th generation mobile networks，4G)。为了提高手机2的蜂窝通信能力，参见图28所示，用户可以采用信号接力的方式，将手机1作为手机2的接力设备，以便手机2借用手机1的5G通信能力执行蜂窝通信业务。
需要说明的是，在本实施例中，用户设备需要将信号接力驻网模式设置为全模式，此后，手机1在通过Remote SIM技术访问到手机2的SIM卡信息之后，即可通过手机1自身的通信能力使用手机2的SIM卡信息访问蜂窝网络。具体地，手机2将上行蜂窝通信数据通过手机1和手机2之间的通信链路发送给手机1，再由手机1通过5G技术将其发送给网络侧设备。并且，手机1在通过5G技术接收到下行蜂窝通信数据之后，再通过手机1和手机2之间的通信链路发送给手机2，由手机2进行处理。
需要说明的是，手机1和手机2之间可以通过WiFi局域网链路、WiFi P2P链路、蓝牙链路等通信链路连接，本实施例对此不进行限制。
此外，在一些实施例中，接力设备还可以是具有通信功能的皮套。其中，该皮套的外形类似手机保护壳，壳体内表面设置有SIM卡槽、通信模块以及其他通信相关配件。当手机安装上该皮套之后，能够使用该皮套内的SIM卡打电话以及收发短信。基于此，在本实施例中，当该皮套的蜂窝通信能力比手机强时，用户也可以将该皮套与手机连接，将该皮套作为接力设备，将手机作为用户设备，使得手机能够借助皮套的能力访问蜂窝网络，提高手机的蜂窝通信能力。
需要说明的是，在本申请实施例提供的信号接力场景中，该皮套也可以不设置有SIM卡槽，本实施例对此不进行限制。
在本实施例中，皮套和手机之间可以通过(peripheral component interconnect express，PCIe)接口、USB接口、集成电路内置音频(inter-integrated circuit sound，I2S)接口、SLIMBUS接口、通用异步收发传输器(universal asynchronous receiver/transmitter，UART)接口、安全数字输入输出(secure digital input and output，SDIO)、串行外设接口(serial peripheral interface，SPI)、通用输入输出(general-purpose input/output，GPIO)接口、控制器区域网络(controller area network，CAN)接口等连接，本实施例对此不进行限制。
综上所述，通过本实施例提供的方法，在不需要更改用户设备的硬件设施即可提高用户设备的蜂窝通信能力。
场景十一：服务器作为接力设备
当用户没有CPE、手机、智能手表等电子设备作为接力设备时，也可以选用服务器作为接力设备。具体请参见图29所示。
图29是本申请实施例提供的通信方法所适用的通信系统的结构示意图三，涉及用户设备将服务器作为接力设备访问网络侧设备的具体方式。参见图29所示，本实施例将作为接力设备的服务器称为接力服务器，一个接力服务器同时可以作为多个用户设备的接力设备，访问用户设备的SIM卡信息，并根据SIM卡信息访问网络侧设备。用户设备和接力服务器可以通过蜂窝数据业务连接，也可以通过WiFi连接。
在本实施例中，用户可以通过购买接力服务器所提供的服务套餐，与接力服务器建立连接，并控制接力服务器为用户设备所提供的信号接力业务的类型。例如，用户可以在例如图30中的(a)所示的天际通应用界面中点击“全球云猫”选项，以进入图30中的(b)所示的套餐购买界面。在套餐购买界面中，不同的套餐对应不同的业务，例如套餐1提供500分钟的信号接力服务，且该服务仅限于通话业务。再例如，套餐2提供1000分钟的信号接力服务，该服务支持通话、短信以及上网业务。用户可以根据需求选择套餐，以控制接力服务器所提供的服务。
此外，不同的区域设置有不同的接力服务器，为了提高用户设备在接力模式下的通信质量，用户也可以在套餐购买界面中选择用户设备所在的区域，例如选择国家A中的城市A，以便用户设备与距离较近的一个接力服务器连接。
接力设备在与用户设备连接之后，即可获取用户设备的SIM卡信息。接力服务器在获取到用户设备的SIM卡信息之后，可以采用方式一或者方式二访问网络侧设备。方式一：在接力服务器配置有蜂窝通信单元的情况下，接力设备可以通过蜂窝通信模块根据用户设 备的SIM卡信息访问网络侧设备。方式二：接力服务器可以通过WiFi根据用户设备的SIM卡信息访问网络侧设备。其中，接力服务器和网络侧设备的通信方式具体请参见电子设备使用NON-3GPP网络(即非3GPP网络)访问网络侧设备的相关内容，本实施例在此不进行赘述。
场景十二：支持双卡来电
目前，市面上大部分的手机虽然支持同时安装两张SIM卡(例如SIM卡1和SIM卡2)，但是当一张SIM卡(如SIM卡1)处于通话状态时，另一张SIM卡(如SIM卡2)通常是无法接收到来电的，因此，用户可能会错过SIM卡2的来电。为此，在本实施例中，当用户设备的一张SIM卡(如SIM卡1)进入通话状态时，用户设备可以自动控制另一张SIM卡(如SIM卡2)进入接力模式，并通过接力设备使用SIM卡2的信息驻网。在该过程中，若SIM卡2来电，接力设备可以在本地进行来电提醒，也可以控制用户设备进行来电提醒，具体如下所示。
在一些实施例中，参见图31所示，用户设备正在接听SIM卡1的通话(即来自王先生135xxxx2195的通话)时，若接力设备接收到SIM卡2的通话(即来自李女士的电话)，可以在接力设备上显示来电提醒界面，以便用户接听。
在另一些实施例中，参见图32所示，用户设备正在接听SIM卡1的通话(即来自王先生135xxxx2195的通话)时，若接力设备接收到SIM卡2的通话(即来自李女士的电话)，可以将来电通知发送给用户设备，由用户设备显示来电提醒界面。基于此，用户可以在用户设备上选择挂断王先生的电话并接听李女士的电话，也可以保持(Hold)王先生的电话以接听李女士的电话。
针对用户设备作为业务处理设备在处理蜂通信业的场景(即信号接力的业务处理模式为“仅用户设备”的场景)，接力设备需要在网络侧设备和用户设备之间中转传输通话数据包。
图33是本申请实施例提供的信号接力通信过程中的数据传输示意图。参见图33所示，在信号接力通信过程中，接力设备在网络侧设备和用户设备之间中转传输各种蜂窝通信数据，其中包括控制信令、短信以及上下行的通话数据包等。
在蜂窝通话过程中，网络侧设备和用户设备之间基于实时传输协议(real-time transport protocol，RTP)传输通话数据包，因此，网络侧设备发送给接力设备的下行通话数据包通常为RTP数据包，RTP数据包中存储的是自适应多速率窄带(adaptive multi rate-narrow band，AMR-NB)、自适应多速率宽带(adaptive multi rate-narrow band，AMR-WB)、增强语音服务(enhance voice services，EVS)、Opus、基于EVS编码演进的沉浸式语音和音频服务(EVS Codec Extension for Immersive Voice and Audio Services，IVAS)等编码格式的语音数据。但是用户设备通常是根据PCM码流播放音频信息的，需要将RTP数据包中AMR-NB、AMR-WB、EVS、Opus、IVAS等格式的语音数据转化为PCM码流之后才能进行播放。同理，用户设备需要将上行的PCM码流转化为AMR-NB、AMR-WB、EVS、Opus、IVAS等格式的语音数据，再将其封装为RTP数据包之后，才能向网络侧设备发送。
此外，在通话过程中，网络侧设备和用户设备之间基于会话初始协议(session initiation protocol，SIP)传输信令。对于网络侧设备发送的SIP信令之后，需要将其转化为对应的通话控制命令，用户设备才能根据控制信令执行相应的动作。并且，对于用户设备生成的通 话控制命令，需要将其转化为SIP信令才能向网络侧设备发送。在本实施例中，通话控制命令可以为IRING、CLCC、CALLSTATE、CHLD、APDS等。其中，IRING为振铃状态上报命令，CLCC为通话状态查询命令，CALLSTATE为通话状态上报命令，CHLD为进行HOLD操作命令，APDS为拨号命令。
目前，以VoLTE、VoNR等通话为例，针对用户设备处理业务的场景，当接力设备具有IMS协议栈和语音编解码能力时，能够进行RTP数据包和PCM码流的相互转化，以及SIP信令和通话命令的转化。当接力设备不具备该能力时，需要由用户设备执行上述操作。因此，针对接力设备能力的不同，可以采用不同的方式转发蜂窝通信数据。具体如下所示。
方式一：接力设备有IMS协议栈和语音编解码能力。
在一个示例中，参见图34所示，在通话过程中网络侧设备和接力设备通过SIP信令传输信令，当接力设备有IMS协议栈时，接力设备可以将下行的SIP信令转化为具体的通话控制命令后，再将通话控制命令发送给用户设备。用户设备也可以将本地生成的上行的通话控制命令发送给接力设备，再由处理设备将其转化为SIP信令并发送给网络侧设备。
当接力设备有语音编解码能力时，对于下行的RTP数据包，接力设备可以先将RTP数据包中的语音数据转化为脉冲编码调制(pulse code modulation，PCM)码流，再将PCM码流发送给用户设备进行播放。此外，用户设备可以采集上行蜂窝通信数据对应的PCM码流，并将PCM码流发送给接力设备，接力设备将PCM码流转化为RTP数据包，并将其发送给网络侧设备。
在另一个示例中，当接力设备有IMS协议栈和语音编解码能力时，并且用户设备也有IMS协议栈和语音编解码能力时。接力设备也可以只在网络侧设备和用户设备之间透传信令、短信以及上下行的通话数据包等蜂窝通信数据，由用户设备进行RTP数据包和PCM码流的相互转化，以及SIP信令和通话控制命令的转化。
方式二：接力设备没有IMS协议栈和语音编解码能力，用户设备有IMS协议栈和语音编解码能力。
参见图35所示，当接力设备没有IMS协议栈和语音编解码能力，但用户设备有IMS协议栈和语音编解码能力时，接力设备只在网络侧设备和用户设备之间透传信令、短信以及上下行的通话数据包等蜂窝通信数据，由用户设备进行RTP数据包和PCM码流的相互转化，以及SIP信令和通话控制命令的转化。
方式三：接力设备有IMS协议栈但没有语音编解码能力，用户设备有语音编解码能力。
参见图36所示，当接力设备有IMS协议栈时，可以将下行的SIP信令转化为具体的通话控制命令后，再将通话控制命令发送给用户设备。用户设备可以将上行的通话控制命令发送给接力设备，由接力设备将其转化为SIP信令并发送给网络侧设备。当接力设备没有语音编解码能力，但用户设备具有该能力时，接力设备只在网络侧设备和用户设备之间透传RTP形式的上/下行通话数据包，由用户设备进行RTP数据包和PCM码流的相互转化。
针对接力设备作为业务处理设备的场景(即信号接力的业务处理模式为“仅接力设备”的场景)，以VoLTE、VoNR等通话为例，参见图37所示，接力设备需要具有IMS协议栈和语音编解码能力，并且能够进行RTP数据包和PCM码流的相互转化，以及SIP信令和通话命令的转化。
需要说明的是，针对CS、CS fallback等通话，根据接力设备是否具有CS协议栈和语音编解码能力，接力设备和用户设备也可以参照上述方式转发蜂窝通信数据，本实施例在此不进行赘述。
当用户设备和接力设备通过数据业务通信时，接力设备可以作为热点设备，将接力设备通过本地SIM卡信息接收的蜂窝信号(包括通用分组无线服务技术(general packet radio service，GPRS)、3G、4G或者5G信号等)转化为wifi信号发射。或者，接力设备在本地未安装SIM卡的情况下，也可以发射WiFi信号。用户设备可以通过接力设备发射的WiFi信号与接力设备建立连接，即连接接力设备的热点。
示例性的，参见图38所示，用户设备在连接接力设备的热点之后，可以通过IP转发(IP FORWORD)的方式，将待发送给接力设备的上行的蜂窝通信数据，通过用户设备的网卡发送给接力设备，再由接力设备通过空口发送给网络侧设备。同理，接力设备也可以通过其热点，将下行的蜂窝通信数据发送给用户设备。
具体地，用户设备中通常针对每一个SIM卡配置一个Internet网卡(即因特网网卡)和多媒体短息业务(multimedia messaging service，MMS)网卡。通常情况下，当用户设备自主与网络侧设备通信时，用户设备将多媒体短消息(即彩信)通过MMS网卡发送给网络侧设备，将一些特定的蜂窝通信数据(例如一键登录相关数据)通过Internet网卡发送给网络侧设备。此外，用户设备中还设置有WiFi网卡，WiFi网卡用于发送用户设备上的应用(application，App)数据，例如App在运行过程中相关的音频、视频数据等。
为了实现在用户设备和网络侧设备之间中转传输蜂窝通信数据，接力设备上也设置了一系列的网卡。示例性的，参见图39所示，针对接力设备(例如CPE)设置有Modem0和Modem1的场景，当本地已安装一个SIM卡时，CPE会为本地的SIM卡配置一个Internet网卡。此外，当用户设备通过CPE WiFi热点连接接力设备时，CPE还会单独为用户SIM卡配置一个Internet网卡和一个MMS网卡。
当用户设备通过接力设备连接网络侧设备时，用户设备通过本地的WiFi网卡先将蜂窝数据业务请求发送给接力设备，再由接力设备发送给网络侧设备。例如，对于彩信，由于彩信是按照固定接入点名称(access point name，APN)的方式通过空口发送给网络侧设备的，因此，用户设备将彩信数据流通过用户设备的MMS网卡发送给本地的WiFi网卡，再由WiFi网卡发送给接力设备的CPE WiFi热点，再通过接力设备的MMS网卡经由Modem1发送给网络侧设备。对于新闻、视频等应用数据，用户设备通过WiFi网卡将其发送给接力设备的CPE WiFi热点，再通过接力设备的SIM卡的Internet网卡经由Modem0发送给网络侧设备。针对特定蜂窝通信数据，用户设备将其通过用户设备的Internet网卡发送给本地的WiFi网卡，再由WiFi网卡发送给接力设备的CPE WiFi热点，再通过接力设备的用户SIM卡的Internet网卡经由Modem1发送给网络侧设备。
需要说明的是，当用户设备或者接力设备不是热点设备时，用户设备可以将蜂窝通信数据通过路由器发送给接力设备，再由接力设备发送给网络侧设备，本实施例在此不进行赘述。
在本实施例中，接力设备支持同时作为N个用户设备的接力设备，使用N个用户设备的SIM卡信息接入蜂窝。
在一些实施例中，当一个Modem通常只能运行一套蜂窝通信协议(例如IMS协议、 CS协议等)，N的数值根据接力设备空余Modem的数量确定。例如，当接力设备是支持双卡的手机时，其通常有两个Modem，若其本地未安装SIM卡，则有两个空闲的Modem，此时，该手机可以同时作为2个用户设备的接力设备。
可选的，当接力设备中的所有Modem均被本地的SIM卡占用，没有空余的Modem时，接力设备可以自动或者根据用户指令控制本地的一个SIM卡下电，以让出一个空余的Modem供用户设备的SIM卡使用。
在另一些实施例中，当一个Modem可以运行多套蜂窝通信协议时，N的数值也可以根据Modem中空闲蜂窝通信协议的数量确定。例如，当手机仅具有一个Modem，但该Modem能够运行3套IMS协议时，若该手机本地已经安装了一个SIM卡，则手机在通过该SIM卡访问网络侧设备时会占用一套IMS协议，还剩余两套空闲的IMS协议。因此，该手机可以同时作为2个用户设备的接力设备。
在本实施例中，电子设备可以作为用户设备和接力设备使用。也就是说，电子设备既可以作为用户设备自主接入蜂窝网络，由可以作为接力设备代替其他电子设备接入蜂窝网络。示例性的，参见图40所示，以电子设备1为例，电子设备1中设置Modem1和Modem2，当电子设备1本地安装有SIM卡1时，电子设备1可以使用SIM卡1通过Modem1访问网络侧设备1。另外，电子设备1还可以作为电子设备2的接力设备，访问电子设备2的SIM卡2的信息，并根据该SIM卡2的信息通过Modem2访问网络侧设备2。
需要说明的是，网络侧设备1和网络侧设备2可以相同，也可以不同。当SIM卡1和SIM卡2属于同一运营商时，网络侧设备1和网络侧设备2通常相同。当SIM卡1和SIM卡2属于不同运营商时，网络侧设备1和网络侧设备2通常不相同。
在接力模式下，当网络侧设备呼叫用户设备时，用户设备可以单独进行来电提醒，也可以和接力设备共同进行来电提醒，也可以按照一定的顺序进行来电提醒。本实施例对此不进行限制。对于按照一定的顺序进行来电提醒，在一种可能的实现方式中，网络侧设备呼叫用户设备时，用户设备可以先振铃预设时间(例如20s)，若在该预设时间内仍处于呼叫状态，则同时在接力设备上进行来电提醒，以提醒用户接听来电。
在本实施例中，用户设备可以对其历史连接过的接力设备进行权限管理。示例性的，参见图41中的(a)所示，响应于用户对“信号接力”开关项的操作，用户设备显示例如图41中的(b)所示的信号接力界面，该界面中包括“授权管理”选项和“业务管理”选项。响应于用户对“授权管理”选项的操作，用户设备显示授权管理界面，该界面中包括用户设备已连接过的电子设备，例如电子设备2、电子设备3和电子设备4。参见图41中的(c)所示，以用户选择设置电子设备2的权限为例，响应于用户对“电子设备2”选项的操作，用户设备显示例如图41中的(d)所示的设置界面，该设置界面中包括“允许授权”、“永久禁止”和“临时删除”开关项。其中，“允许授权”选项用于允许对应的电子设备访问用户设备。“永久禁止”选项用于禁止对应的电子设备访问用户设备。“临时删除”选项用于临时限制对应的电子设备访问用户设备，例如在5min内限制电子设备2访问用户设备。用户可以根据需求在如图41中的(d)所示的界面中设置对应电子设备的权限。
此外，用户设备还可以设置每个接力设备代替用户设备执行的蜂窝通信业务，例如通话业务、短信业务等。示例性的，参见图42中的(a)所示，响应于用户对“业务管理”选项的操作，用户设备显示例如图42中的(b)所示的界面，该界面中包括可配置的业务选 项，例如“全部”选项、“通话”选项、“短信”选项、“信号”和“数据业务”选项。用户可以在该界面中设置对应的接力设备所执行蜂窝通信业务。
需要说明的是，在本申请实施例中，对于智能手表、CPE等没有屏幕或者屏幕较小的电子设备，可以通过手机中的智慧生活应用进行相关的信号接力设置。相关的设置界面可以参考图4中的(e)、图4中的(f)、图23、图41和图42所示，本实施例在此不再赘述。
用户设备在使用的过程中，可能会随着用户的位置不断移动。当用户设备距离接力设备较远时，用户设备和接力设备之间的通信链路可能出现异常，导致通话质量变差甚至通话中断，用户体验不佳。例如，在设置有客厅、卧室A和卧室B的房间内，客厅距离卧室B较远。若接力设备在客厅，当用户设备随着用户从客厅移动至卧室B时，由于信号遮挡等原因，用户设备和接力设备之间的通信链路可能会逐渐变差，导致通话质量变差甚至通话中断，用户体验不佳。为此，本申请实施例还可以根据用户设备是否满足预设的切换条件，来确定是否使用接力设备接入蜂窝网络。
图43是本申请实施例提供的模式切换原理示意图。如图43所示，用户设备可以根据其访问蜂窝网络的历史数据决策使用接力模式访问网络侧设备，或者使用自主模式访问网络侧设备。其中，自主模式是指用户设备自行根据接收到的蜂窝信号访问蜂窝网络。
图44是本申请另一个实施例提供的通信方法的流程图，涉及用户设备切换网络侧设备接入模式的过程。具体包括如下步骤。
S4401，用户设备检测蜂窝通信参数。
在本实施例中，用户设备的蜂窝通信参数包括：用户设备的蜂窝信号质量，用户设备与接力设备之间的通话质量，用户设备的电量，用户设备所处小区的历史通话质量，用户设备的地理位置，或者用户设备是否连接车载蓝牙设备等。
其中，通话质量包括数据传输质量、链路质量以及QoE中的至少一个。其中，数据传输质量可以根据通信链路通话数据包的丢包率、时延、抖动等参数来确定。链路质量可以根据参考信号强度(reference signal receiving power，RSRP)、参考信号质量(reference signal receiving quality，RSRQ)或者信噪比(signal to interference plus noise ratio，SINR)中的至少一种来确定。
S4402，当用户设备处于自主模式时，若用户设备的蜂窝通信参数满足第一预设条件，则从自主模式切换至接力模式访问网络侧设备。
其中，第一预设条件可以为：用户设备的蜂窝信号低于预设值。示例性的，该预设值可以为-95dBm、-100dBm、-110dBm、-115dBm等。当用户设备的蜂窝信号强度小于预设值时，说明蜂窝信号的强度较差，可能无法维持用户设备与网络侧设备稳定的通信，在通信过程中出现上网卡顿、通话异常等情况。因此，当用户设备的蜂窝信号强度小于预设值时，用户设备采用接力模式接入网络侧设备，以改善与网络侧设备的通信质量。
或者，第一预设条件可以为：用户设备的电量低于预设电量。示例性的，该预设电量可以为电池最大蓄电量的20％、10％等。用户设备在自主接入蜂窝网络的过程中，需要不断监听网络侧设备下发的广播消息并上报TAU信息，以和网络侧设备建立连接，功耗较大。当用户设备的电量低于预设电量时，为了减少其电量消耗，用户设备可以切换至接力模式，使用接力设备接入网络侧设备。
可选的，当用户设备的电量低于预设电量时，若网络侧设备呼叫用户设备，可以只在接力设备侧进行来电提醒，以由用户在接力设备侧接听电话，进一步减少用户设备的电量损耗。
在一个示例中，当用户在户外活动且不便于充电时，若手机的电量低于预设电量，平板电脑的电量充足，那么，用户可以控制手机使用平板电脑作为接力设备与网络侧设备连接，从而节约手机的电量。
或者，第一预设条件可以为：用户设备处于异常小区。示例性的，用户设备在日常的通信过程中可以检测其与网络侧设备的通信质量，确定经常出现通信异常的小区，将其标记为异常小区。当用户设备切换至该异常小区后，为了提高其与网络侧设备的通信质量，用户设备可以使用接力设备接入网络侧设备。
或者，第一预设条件可以为：用户设备处于异常位置。示例性的，用户设备在日常的通信过程中可以检测其与网络侧设备的通信质量，确定经常出现通信异常的位置，存储对应的位置信息。在本实施例中，该异常位置可以是地理位置，也可以为WiFi覆盖区域、蓝牙覆盖区域等。因此，该异常位置对应的异常位置信息可以是经纬度范围，也可以是WiFi的名称、服务集标识(service set identifier，SSID)，蓝牙名称等。当电子设备检测到其当前的位置信息与异常位置信息相同时，处于异常位置。当用户设备处于异常位置时，为了提高其与网络侧设备的通信质量，用户设备可以使用接力设备接入网络侧设备。
或者，第一预设条件可以为：用户设备连接车载蓝牙设备。受车辆遮挡等原因的影响，车辆内部的蜂窝信号通常比车辆外部弱。因此，当用户设备进入私家车并连接车载蓝牙设备时，可以将私家车作为接力设备，使用私家车自带的Modem访问网络侧设备，从而提高用户设备与网络侧设备的通信质量。
或者，用户设备可以根据上述至少两个第一预设条件综合决策，形成指纹数据，并根据该指纹数据决策是否由自主模式切换至接力模式访问网络侧设备。
S4403，当用户设备处于接力模式时，若用户设备的蜂窝通信参数满足第二预设条件，则从接力模式切换至自主模式访问网络侧设备。
其中，第二预设条件可以为：用户设备与接力设备之间的通信质量低于预设质量，且用户设备的蜂窝信号强度高于预设强度。示例性的，用户设备与接力设备之间的通信质量低于预设质量包括：用户设备与接力设备之间的通信链路的丢包率高于预设值(例如10％)；或者通话数据包的延时高于预设值(例如120ms)；或者，第一端侧链路的信噪比低于预设值(例如10dB)等。
可以理解，当用户设备与接力设备之间的通信质量低于预设质量时，即使接力设备与网络侧设备之间的通信质量较好，也无法保证用户设备与网络侧设备的通话质量。因此，当用户设备的蜂窝信号强度高于预设强度时，将用户设备从接力模式切换至自主模式访问网络侧设备，由用户设备直接访问网络侧设备时，能够改善通话质量。
在本实施例中，用户设备还需要进行乒乓抑制，避免其在自主模式和接力模式之间进行频繁切换，造成电子设备资源浪费，影响用户体验。
或者，第二预设条件可以为：用户设备的电量等于或者高于预设电量。示例性的，该预设电量可以为电池最大蓄电量的20％、10％等。当用户设备的电量等于或者高于预设电量时，用户设备可以从接力模式切换至自主模式，以自行与网络侧设备连接。
或者，第二预设条件可以为：用户设备从异常小区切换至正常小区，或者从异常位置移动至非异常位置。当用户设备处于异常小区或者异常位置时，其与网络侧设备的通信质量通常较差，需要借助接力设备访问网络侧设备。但是，当用户设备从异常小区切换至正常小区，或者从异常位置移动至非异常位置时，其与网络侧设备的通信质量通常是能够得到保障的，因此，将用户设备从接力模式切换至自主模式，直接访问网络侧设备。
或者，第二预设条件可以为：用户设备断开与车载蓝牙设备的连接。当用户设备断开与车载蓝牙设备的连接时，可能是用户不想使用车载蓝牙设备，或者车辆熄火，或者用户远离车辆，此时为了保证用户设备的与网络侧设备的正常连接，用户设备从接力模式切换至自主模式，直接访问网络侧设备。
或者，用户设备可以根据上述至少两个第二预设条件综合决策，形成指纹数据，并根据该指纹数据决策是否由接力模式切换至自主模式访问网络侧设备。
通过本实施例提供的方法，第二电子设备在处理蜂窝通信业务的过程中，可以根据预设条件自动在接力模式和自主模式之间进行切换，从而保证蜂窝通信质量。
需要说明的是，在本申请实施例中，自主模式和接力模式的相互切换可以在空闲态进行，也可以在业务态进行。其中，空闲态是指用户设备未执行蜂窝通信业务时，业务态是指用户设备执行蜂窝通信业务时。例如，业务态可以为用户设备打电话、上网的过程中等。
当用户设备在空闲态进行自主模式和接力模式的切换时，可以通过启动或者关闭用户设备的Modem以及IMS协议栈来进行，即进行硬切换。以从自主模式切换至接力模式为例，用户设备关闭控制本地的Modem或者Modem协议栈下电，并关闭本地的IMS协议栈。以从接力模式切换至自主模式为例，用户设备可以控制本地的Modem和Modem协议栈上电，并重启本地的IMS协议栈，重新加载协议栈连接网络侧设备。为了缩短用户设备重新启动IMS协议栈、Modem或Modem协议栈的时间，用户设备可以暂时不读取SIM卡上本地的SMS，以及SIM卡上的联系人信息等信息，以实现快速重启。未读取的SIM卡信息在该信息对应的老化周期内不做清理，在主机做好缓存即可。
当用户设备在业务态进行自主模式和接力模式的切换时可以进行软切换，即将用户设备的IMS协议栈和接力设备的IMS协议栈进行同步，将一个电子设备的业务信息同步给另一电子设备，以由该另一电子设备进行位置区域更新(Location Area Update，LAU)或者TAU，从而访问网络侧设备。
下面以用户设备当前执行的蜂窝通信业务时通话业务为例，对用户设备从自主模式切换至接力模式的过程进行说明。
图45是本申请实施例提供的用户设备的用户面及控制面协议栈的示意性架构图。参见图45所示，用户设备和网络侧设备的用户面协议栈包括分组数据汇聚协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理层(physics，PHY)。用户设备的控制面协议栈包括非接入层(non access stratum，NAS)、无线资源控制(radio resource control，RRC)层、PDCP层、RLC层、MAC层和PHY层。网络侧设备的基站包括RRC层、PDCP层、RLC层、MAC层和PHY层，网络侧设备的移动管理实体(mobility management entity，MME)包括NAS。
其中，PHY层位于最低层，也可以称为层一(Layer 1)。MAC层、RLC层以及PDCP 层属于中间层，也可以称为层二(Layer 2)。RRC层和NAS属于更高层，也可以称为层三(Layer 3)。层一的主要功能是提供两个物理实体间的可靠的比特流的传送，适配传输媒介。层二的主要功能是信道复用和解复用、数据格式的封装、数据包调度等。层三的主要功能是寻址、路由选择、连接的建立和控制、资源的配置策略等。
当用户设备从自主模式切换至接力模式的过程中，用户设备需要将其用户面协议栈及控制面协议栈中与本次通话相关的状态信息全部同步给接力设备，并且由接力设备发起位置区域更新或者TAU刷新，访问网络侧设备。在该方法中，设备切换导致的通话数据包的时延会小一些，设备切换过程中同步的数据量(尤其是状态信息的数量)会大一些。或者，用户设备也可以只将本地控制面协议栈中与本地通话相关的信息全部同步给接力设备，例如控制面协议栈中层三的数据，并且由接力设备发起LAU或者TAU，访问网络侧设备。
通过本申请实施例提供的切换方法，用户设备在切换通信模式的过程中，可以保持当前的通话不掉话，做到用户无感知。
需要说明的是，当用户设备不支持软切换时，用户设备应减少在通话态进行模式切换。例如，用户设备可以持续检测通话质量，当通话质量在预设时间内持续降低时，用户设备可以播放提示语音，以指示当前通话质量逐渐减低，从而提醒用户靠近接力设备。示例性的，该提示语音可以为急促的“嘟嘟嘟～”声，或者语音信息“本机信号弱，请靠近接力设备”等。此外，针对视频通话的场景，用户设备的通话界面上还可以显示提示信息，示例性的，该提示信息可以为文字信息“信号弱，请靠近接力设备”。
此外，当接力设备和用户设备之间的通信质量低于预设质量时，也可以在接力设备和用户设备可以基于当前的通信链路进行协商，再建立一条或者多条通信链路，以通过多条链路共同传输通话数据。例如，当用户设备和接力设备当前是通过WiFi链路连接时，用户设备和接力设备之间可以再建立一条数据业务链路，以传输通话数据。
在接力设备和用户设备通过多条链路共同传输通话数据的过程中，可以将一部分通话数据包由第一条通信链路传输，将另一部分通话数据包由第二条通信链路传输，以减少每条链路的数据传输压力，提高通话数据包的传输质量。或者，也可以将所有通话数据包复制一份，将全部的通话数据包在各个通信链路均传输一遍，以减少接收端缺失的通话数据包的数量，提高通话质量。
图46是本申请一个实施例提供的多网协同场景示意图。参见图46所示，当用户设备安装有SIM卡1和SIM2，且SIM卡1与接力设备关联时，用户设备可以通过多路网络访问网络侧设备。其中一路为通过接力设备使用SIM卡1的信息访问网络侧设备，另一路为用户设备使用SIM卡2的信息访问网络侧设备。
图47是本申请另一个实施例提供的网络融合场景的示意图。参见图47所示，当接力设备从用户设备获取到SIM卡1的信息，并且本地安装有SIM卡2时，接力设备可以通过使用多路网络访问网络侧设备。其中一路为使用SIM卡1的信息访问网络侧设备，另一路为使用SIM卡2的信息访问网络侧设备。当接力设备作为热点设备连接了其他电子设备(例如辅助设备1)时，辅助设备1可以享受接力设备的多网协同能力，即辅助设备1既可以使用SIM卡1的信息访问网络侧设备，也可以使用SIM卡2的信息访问网络侧设备。此外，接力设备也可以访问其他电子设备(例如辅助设备2)，进而通过辅助设备2访问网络侧设备。应理解，当接力设备能够通过辅助设备2访问网络侧设备时，接力设备对应 的用户设备也可以使用辅助设备2访问网络侧设备。
应理解，上述实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本申请实施例还提供一种第一电子设备，该第一电子设备被配置为执行上述各实施例中接力设备所执行的通信方法。
本申请实施例还提供一种第二电子设备，该第二电子设备被配置为执行上述各实施例中用户设备所执行的通信方法。
本申请实施例还提供一种通信方法，该方法应用于第一电子设备，该方法包括上述各实施例中接力设备所执行的方法。
本申请实施例还提供一种通信方法，该方法应用于第二电子设备，该方法包括上述各实施例中用户设备所执行的方法。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，该计算机程序被处理器执行时实现上述各实施例中接力设备所执行的方法。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，该计算机程序被处理器执行时实现上述各实施例中用户设备所执行的方法。
本申请实施例还提供一种计算机程序产品，该程序产品包括程序，当该程序被设备运行时，使得第一电子设备实现上述各实施例中接力设备所执行的方法。
本申请实施例还提供一种计算机程序产品，该程序产品包括程序，当该程序被设备运行时，使得第二电子设备实现上述各实施例中用户设备所执行的方法。
本申请实施例还提供一种芯片，应用于第一电子设备，该芯片包括存储器和处理器，该处理器执行存储器中存储的计算机程序，以实现上述各实施例中接力设备所执行的方法。
本申请实施例还提供一种芯片，应用于第二电子设备，该芯片包括存储器和处理器，该处理器执行存储器中存储的计算机程序，以实现上述各实施例中用户设备所执行的方法。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请实施例的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，在本申请实施例的描述中，“多个”是指两个或多于两个。
以上，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
以上所述实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。

Claims (41)

  1. 一种通信系统，其特征在于，包括第一电子设备和第二电子设备，所述第二电子设备上安装有第一SIM卡，所述第一SIM卡中存储有第一SIM卡信息；
    所述第一电子设备与所述第二电子设备建立连接；
    所述第一电子设备获取所述第一SIM卡信息；
    所述第一电子设备根据所述第一SIM卡信息与网络侧设备连接，以使得所述第二电子设备进入接力模式；
    其中，在所述接力模式下，所述第一电子设备协助所述第二电子设备执行与所述第一SIM卡相关的蜂窝通信业务。
  2. 根据权利要求1所述的系统，其特征在于，所述第一电子设备协助所述第二电子设备执行与所述第一SIM卡相关的蜂窝通信业务，包括：
    所述第一电子设备在所述网络侧设备和所述第二电子设备之间转发所述第一SIM卡相关的蜂窝通信数据，并由所述第二电子设备根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  3. 根据权利要求1所述的系统，其特征在于，所述第一电子设备协助所述第二电子设备执行与所述第一SIM卡相关的蜂窝通信业务，包括：
    所述第一电子设备与所述网络侧设备交互所述第一SIM卡相关的蜂窝通信数据，并在本地根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  4. 根据权利要求2所述的系统，其特征在于，
    当所述第二电子设备处于自主模式时，若所述第二电子设备满足第一预设条件，则所述第二电子设备从所述自主模式切换至所述接力模式访问所述网络侧设备；和/或，
    当所述第二电子设备处于所述接力模式时，若所述第二电子设备满足第二预设条件，则所述第二电子设备从所述接力模式切换至所述自主模式访问所述网络侧设备；
    其中，在所述自主模式下，所述第二电子设备根据所述第一SIM卡信息与所述网络侧设备连接，与所述网络侧设备直接交互所述第一SIM卡相关的蜂窝通信数据，并在本地根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  5. 根据权利要求4所述的系统，其特征在于，所述第一预设条件为：
    所述第二电子设备的蜂窝信号强度低于强度阈值；和/或，
    所述第二电子设备的电量低于电量阈值；和/或，
    所述第二电子设备处于异常小区；和/或，
    所述第二电子设备处于异常位置；和/或，
    所述第二电子设备连接车载蓝牙设备。
  6. 根据权利要求4所述的系统，其特征在于，所述第二预设条件为：
    所述第一电子设备与所述第二电子设备的通信质量低于通信质量阈值；和/或，
    所述第二电子设备的电量高于或者等于电量阈值；和/或，
    所述第二电子设备从异常小区切换至正常小区；和/或，
    所述第二电子设备从异常位置切换至正常位置；和/或，
    所述第二电子设备断开与车载蓝牙设备的连接。
  7. 根据权利要求4-6任一项所述的系统，其特征在于，当所述第二电子设备处于空闲 态时，
    所述第二电子设备控制本地的调制解调器Modem、Modem协议栈或者互联网多媒体子系统IMS协议栈下电，并控制所述第一电子设备通过所述第一SIM卡信息访问所述网络侧设备，以从所述自主模式切换至所述接力模式；
    所述第二电子设备断开与所述第一电子设备的连接，控制本地的Modem、Modem协议栈和IMS协议栈上电，根据所述第一SIM卡信息访问所述网络侧设备，以从所述接力模式切换至所述自主模式。
  8. 根据权利要求4-6任一项所述的系统，其特征在于，当所述第二电子设备处于业务态时，
    所述第二电子设备控制本地的Modem、Modem协议栈或者IMS协议栈下电，并控制所述第二电子设备将用户面协议栈及控制面协议栈中与当前业务相关的状态信息同步给所述第一电子设备，由所述第一电子设备根据所述第一SIM卡信息以及所述状态信息访问网络侧设备，以从所述自主模式切换至所述接力模式；
    所述第二电子设备控制本地的Modem、Modem和IMS协议栈上电，获取所述第一电子设备的用户面协议栈及控制面协议栈中与当前业务相关的状态信息，并根据所述第一SIM卡信息以及所述状态信息访问网络侧设备，以从所述接力模式切换至所述自主模式。
  9. 根据权利要求1-8任一项所述的系统，其特征在于，所述第一电子设备与所述第二电子设备通过近场通信技术、远场通信技术或者物理实体连接。
  10. 根据权利要求1-9任一项所述的系统，其特征在于，所述第一电子设备与所述第二电子设备建立连接，包括：
    所述第一电子设备广播第一通知消息，所述第一通知消息用于通知所述第一电子设备具备信号接力功能；
    所述第二电子设备在接收到所述第一通知消息之后显示第一提示框，所述第一提示框中包括设备选择控件；
    响应于用户对所述设备选择控件的操作，所述第一电子设备和所述第二电子设备建立连接。
  11. 根据权利要求10所述的系统，其特征在于，所述第一电子设备广播第一通知消息，包括：
    当所述第一电子设备的蜂窝信号强度大于或等于强度阈值时，所述第一电子设备广播第一通知消息。
  12. 根据权利要10或11所述的系统，其特征在于，所述第二电子设备在接收到所述第一通知消息之后显示第一提示框，包括：
    当所述第二电子设备的蜂窝信号强度小于强度阈值时，所述第二电子设备在接收到所述第一通知消息之后显示第一提示框。
  13. 根据权利要求1-12任一项所述的系统，其特征在于，所述第一电子设备获取所述第一SIM卡信息，包括：
    所述第一电子设备实时获取所述第一SIM卡信息中的鉴权数据，所述鉴权数据用于与所述网络侧连接时进行鉴权；
    所述第一电子设备预先缓存所述第一SIM卡信息中除所述鉴权数据以外的其他数据， 并根据不同数据的老化周期更新对应的数据，以便所述第一电子设备在处理蜂窝通信业务时，直接从本地读取所述其他数据。
  14. 根据权利要求1-13任一项所述的系统，其特征在于，
    所述第一电子设备在使用所述第一SIM卡信息与所述网络侧设备连接之后，显示第三提示框，所述第三提示框用于提示所述第一电子设备正在为所述第二电子设备提供信号接力服务。
  15. 根据权利要求2或4-14任一项所述的系统，其特征在于，
    当所述第二电子设备的通话质量低于质量阈值时，所述第二电子设备显示提示信息，所述提示信息用于提示用户控制所述第二电子设备靠近所述第一电子设备。
  16. 根据权利要求1-15任一项所述的系统，其特征在于，
    所述第一电子设备使用所述第一SIM卡的蜂窝数据流量发射热点信号；
    当第三电子设备连接所述热点信号之后，所述第三电子设备通过所述第一电子设备使用所述第一SIM卡的蜂窝数据流量上网。
  17. 根据权利要求1-16任一项所述的系统，其特征在于，所述第二电子设备还安装有第二SIM卡，所述第二SIM卡中存储有第二SIM卡信息；
    所述第二电子设备使用所述第二SIM卡信息与所述网络侧设备连接，并在本地处理所述第二SIM卡相关的蜂窝通信业务。
  18. 根据权利要求1-17任一项所述的系统，其特征在于，所述第一电子设备还安装有第三SIM卡，所述第三SIM卡中存储有第三SIM卡信息；
    所述第一电子设备使用所述第三SIM卡信息与所述网络侧设备连接，并在本地处理所述第三SIM卡相关的蜂窝通信业务。
  19. 一种第一电子设备，其特征在于，所述第一电子设备被配置为：
    与第二电子设备建立连接，所述第二电子设备安装有第一SIM卡，所述第一SIM卡中存储有第一SIM卡信息；
    获取所述第一SIM卡信息；
    根据所述第一SIM卡信息与网络侧设备连接，以使得所述第二电子设备进入接力模式；
    其中，在所述接力模式下，所述第一电子设备协助所述第二电子设备执行与所述第一SIM卡相关的蜂窝通信业务。
  20. 根据权利要求19所述的第一电子设备，其特征在于，在所述接力模式下，所述第一电子设备还被配置为：
    在所述网络侧设备和所述第二电子设备之间转发所述第一SIM卡相关的蜂窝通信数据，并由所述第二电子设备根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  21. 根据权利要求19所述的第一电子设备，其特征在于，在所述接力模式下，所述第一电子设备还被配置为：
    与所述网络侧设备交互所述第一SIM卡相关的蜂窝通信数据，并在本地根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  22. 根据权利要求19-21任一项所述的第一电子设备，其特征在于，所述第一电子设备与所述第二电子设备通过近场通信技术、远场通信技术或者物理实体连接。
  23. 根据权利要求19-22任一项所述的第一电子设备，其特征在于，所述第一电子设备 还被配置为：
    广播第一通知消息，所述第一通知消息用于通知所述第一电子设备具备信号接力功能，以由所述第二电子设备根据所述第一通知消息与所述第一电子设备建立连接。
  24. 根据权利要求23所述的第一电子设备，其特征在于，所述第一电子设备还被配置为：
    当所述第一电子设备的蜂窝信号强度大于或等于强度阈值时，所述第一电子设备广播所述第一通知消息。
  25. 根据权利要求19-24任一项所述的第一电子设备，其特征在于，所述第一电子设备还被配置为：
    实时获取所述第一SIM卡信息中的鉴权数据，所述鉴权数据用于与所述网络侧连接时进行鉴权；
    预先缓存所述第一SIM卡信息中除所述鉴权数据以外的其他数据，并根据不同数据的老化周期更新对应的数据，以便所述第一电子设备在处理蜂窝通信业务时，直接从本地读取所述其他数据。
  26. 根据权利要求19-25任一项所述的第一电子设备，其特征在于，所述第一电子设备还被配置为：
    在使用所述第一SIM卡信息与所述网络侧设备连接之后，显示第三提示框，所述第三提示框用于提示所述第一电子设备正在为所述第二电子设备提供信号接力服务。
  27. 根据权利要求19-26任一项所述的第一电子设备，其特征在于，所述第一电子设备还被配置为：
    使用所述第一SIM卡的蜂窝数据流量发射热点信号；
    当第三电子设备连接所述热点信号之后，所述第三电子设备通过所述第一电子设备使用所述第一SIM卡的蜂窝数据流量上网。
  28. 根据权利要求19-27任一项所述的第一电子设备，其特征在于，所述第一电子设备还安装有第三SIM卡，所述第三SIM卡中存储有第三SIM卡信息；
    所述第一电子设备还被配置为：
    使用所述第三SIM卡信息与所述网络侧设备连接，并在本地处理所述第三SIM卡相关的蜂窝通信业务。
  29. 一种第二电子设备，其特征在于，所述第二电子设备上安装有第一SIM卡，所述第一SIM卡中存储有第一SIM卡信息；所述第二电子被配置为：
    与第一电子设备建立连接；
    向所述第一电子设备发送第一SIM卡信息，所述第一SIM卡信息用于所述第一电子设备与网络侧设备连接，以使得所述第二电子设备进入接力模式；
    其中，在所述接力模式下，所述第一电子设备协助所述第二电子设备执行与所述第一SIM卡相关的蜂窝通信业务。
  30. 根据权利要求29所述的第二电子设备，其特征在于，在所述接力模式下，所述第一电子设备在所述网络侧设备和所述第二电子设备之间转发所述第一SIM卡相关的蜂窝通信数据，并由所述第二电子设备根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  31. 根据权利要求29所述的第二电子设备，其特征在于，在所述接力模式下，所述第 一电子设备与所述网络侧设备交互所述第一SIM卡相关的蜂窝通信数据，并在本地根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  32. 根据权利要求30所述的第二电子设备，其特征在于，所述第二电子设备还被配置为：
    当所述第二电子设备处于自主模式时，若所述第二电子设备满足第一预设条件，则所述第二电子设备从所述自主模式切换至所述接力模式访问所述网络侧设备；和/或，
    当所述第二电子设备处于所述接力模式时，若所述第二电子设备满足第二预设条件，则所述第二电子设备从所述接力模式切换至所述自主模式访问所述网络侧设备；
    其中，在所述自主模式下，所述第二电子设备根据所述第一SIM卡信息与所述网络侧设备连接，与所述网络侧设备直接交互所述第一SIM卡相关的蜂窝通信数据，并在本地根据所述蜂窝通信数据处理对应的蜂窝通信业务。
  33. 根据权利要求32所述的第二电子设备，其特征在于，所述第一预设条件为：
    所述第二电子设备的蜂窝信号强度低于强度阈值；和/或，
    所述第二电子设备的电量低于电量阈值；和/或，
    所述第二电子设备处于异常小区；和/或，
    所述第二电子设备处于异常位置；和/或，
    所述第二电子设备连接车载蓝牙设备。
  34. 根据权利要求32或33所述的第二电子设备，其特征在于，所述第二预设条件为：
    所述第一电子设备与所述第二电子设备的通信质量低于通信质量阈值；和/或，
    所述第二电子设备的电量高于或者等于电量阈值；和/或，
    所述第二电子设备从异常小区切换至正常小区；和/或，
    所述第二电子设备从异常位置切换至正常位置；和/或，
    所述第二电子设备断开与车载蓝牙设备的连接。
  35. 根据权利要求32-34任一项所述的第二电子设备，其特征在于，当所述第二电子设备处于空闲态时，所述第二电子设备还被配置为：
    控制本地的调制解调器Modem、Modem协议栈或者互联网多媒体子系统IMS协议栈下电，并控制所述第一电子设备通过所述第一SIM卡信息访问所述网络侧设备，以从所述自主模式切换至所述接力模式；和/或，
    断开与所述第一电子设备的连接，控制本地的Modem、Modem协议栈和IMS协议栈上电，并根据所述第一SIM卡信息访问所述网络侧设备，以从所述接力模式切换至所述自主模式。
  36. 根据权利要求32-34任一项所述的第二电子设备，其特征在于，当所述第二电子设备处于业务态时，所述第二电子设备还被配置为：
    控制本地的Modem、Modem协议栈或者IMS协议栈下电，并将本地用户面协议栈及控制面协议栈中与当前业务相关的状态信息同步给所述第一电子设备，由所述第一电子设备根据所述第一SIM卡信息以及所述状态信息访问网络侧设备，以从所述自主模式切换至所述接力模式；和/或，
    控制本地的Modem、Modem协议栈和IMS协议栈上电，获取所述第一电子设备的用户面协议栈及控制面协议栈中与当前业务相关的状态信息，并根据所述第一SIM卡信息以 及所述状态信息访问网络侧设备，以从所述接力模式切换至所述自主模式。
  37. 根据权利要求29-36任一项所述的第二电子设备，其特征在于，所述第一电子设备与所述第二电子设备通过近场通信技术、远场通信技术或者物理实体连接。
  38. 根据权利要求29-37任一项所述的第二电子设备，其特征在于，所述第二电子设备还被配置为：
    在接收到第一通知消息之后显示第一提示框，所述第一通知消息用于通知所述第一电子设备具备信号接力功能，所述第一提示框中包括设备选择控件；
    响应于用户对所述设备选择控件的操作，和所述第二电子设备建立连接。
  39. 根据权利要求38所述的第二电子设备，其特征在于，所述第二电子设备还被配置为：
    当所述第二电子设备的蜂窝信号强度小于强度阈值时，所述第二电子设备在接收到所述第一通知消息之后显示第一提示框。
  40. 根据权利要求30或32-39任一项所述的第二电子设备，其特征在于，所述第二电子设备还被配置为：
    当所述第二电子设备的通话质量低于质量阈值时，显示提示信息，所述提示信息用于提示用户控制所述第二电子设备靠近所述第一电子设备。
  41. 根据权利要求29-40任一项所述的第二电子设备，其特征在于，所述第二电子设备还安装有第二SIM卡，所述第二SIM卡中存储有第二SIM卡信息；
    所述第二电子设备还被配置为：
    使用所述第二SIM卡信息与所述网络侧设备连接，并在本地处理所述第二SIM卡相关的蜂窝通信业务。
PCT/CN2022/083139 2021-03-31 2022-03-25 一种通信系统、第一电子设备和第二电子设备 WO2022206616A1 (zh)

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