WO2019183792A1 - 一种从低制式网络返回高制式网络的方法和通信装置 - Google Patents

一种从低制式网络返回高制式网络的方法和通信装置 Download PDF

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Publication number
WO2019183792A1
WO2019183792A1 PCT/CN2018/080626 CN2018080626W WO2019183792A1 WO 2019183792 A1 WO2019183792 A1 WO 2019183792A1 CN 2018080626 W CN2018080626 W CN 2018080626W WO 2019183792 A1 WO2019183792 A1 WO 2019183792A1
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WO
WIPO (PCT)
Prior art keywords
sim card
network
card
system network
terminal device
Prior art date
Application number
PCT/CN2018/080626
Other languages
English (en)
French (fr)
Inventor
魏珍荣
宋昊
党淑君
黄才华
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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 JP2020549547A priority Critical patent/JP7213885B2/ja
Priority to US16/976,679 priority patent/US11589280B2/en
Priority to PCT/CN2018/080626 priority patent/WO2019183792A1/zh
Priority to CN201880090998.5A priority patent/CN111869264B/zh
Publication of WO2019183792A1 publication Critical patent/WO2019183792A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • 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
    • 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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005—Multiple registrations, e.g. multihoming
    • 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
    • H04W8/186—Processing of subscriber group data
    • 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
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present application relates to the field of communications, and in particular, to a method and a communication device for returning from a low-standard network to a high-standard network.
  • LTE Long Term Evolution
  • the present application provides a method for returning from a low-standard network to a high-standard network, which enables the terminal device to return to the high-standard network in the case where the terminal device falls back from the high-standard network to the low-standard network.
  • the present application provides a communication method, including: detecting that a first user identity SIM card on a terminal device falls back from a first system network to a second system network; and acquiring a registration status of the second SIM card,
  • the registration status includes an operator of the second SIM card and a network where the second SIM card resides, wherein the first SIM card and the second SIM card enable the terminal device to operate in the dual card dual standby single pass mode; according to the second SIM card Registration status, obtain the target system network; register the first SIM card to the target system network.
  • the modem corresponding to the first SIM card is in a data service connection state.
  • the first system network comprises a 4G network, a 4.5G network, or a 5G network
  • the second system network comprises a 2G network or a 3G network.
  • obtaining the target system network according to the registration status of the second SIM card including: if the operator of the second SIM card is the same as the operator of the first SIM card, And the second SIM card resides in the high-standard network, and the high-standard network where the second SIM card resides is used as the target system network.
  • obtaining the target system network according to the registration status of the second SIM card including: if the operator of the second SIM card is different from the operator of the first SIM card, Or the second SIM card resides in the low-standard network, and sends a search notification to the second SIM card, where the search notification is used to indicate the second SIM card search target system network; and the target SIM network is obtained from the second SIM card, and the target system network is The modem corresponding to the second SIM card is searched using the downlink radio resource.
  • the registration status of the second SIM card includes whether the second SIM card is installed on the terminal device, and acquiring the target system network according to the registration status of the second SIM card
  • the method includes: if it is determined that the second SIM card is not installed on the terminal device, notifying the modem corresponding to the second SIM card to search for the target system network; and acquiring the target system network from the modem corresponding to the second SIM card.
  • the present application provides a method for returning from a low-standard network to a high-standard network, the method being applied to a terminal device including a first SIM card and a second SIM card, the first SIM card and the second SIM card enabling the terminal
  • the device works in the dual card dual standby single pass mode.
  • the primary card is connected to the first-standard network, and if the primary card is in the process of processing data services (for example, voice or video services), it falls back from the first-standard network system to the second-standard network, and falls back to the second-standard network.
  • the background search mechanism refers to a method in which a SIM card resides in a serving cell, and uses a downlink discontinuous reception discontinuous reception (DRX) slot search system.
  • the terminal device in the dual card dual standby single-pass working mode can only support one SIM card for data service at the same time, and the other SIM card can receive downlink information and/or data, such as cell search and receiving paging. Messages and business measurements, etc., do not affect the SIM card for data services.
  • the terminal device acquires the registration status of the second SIM card, and the registration status of the second SIM
  • the information includes the operator to which the second SIM card belongs and the network where the second SIM card resides. If the terminal device determines that the first SIM card and the second SIM card belong to the same operator, and the secondary card resides in the high-standard network, the terminal device directly registers the first SIM card to the high-standard system in which the second SIM card resides. The network allows the primary card to return to a high-standard network.
  • the terminal device finds that the first SIM card and the second SIM card belong to different operators, or the first SIM card and the second SIM card belong to the same operator, but the second SIM card resides in the low-standard network, the terminal The device instructs the second SIM to search for the target system network, that is, to instruct the second SIM to search for a particular high-standard network. After searching for the target system network, the terminal device registers the first SIM card to the target system network, so that the first SIM card can be returned to the high-standard network.
  • the first-standard network includes a 4G network, a 4.5G network, and a 5G network, and a high-standard network that may appear in future communication systems.
  • the second standard network may include a low-standard network such as a 2G network or a 3G network.
  • the present application provides a communication device having the functionality to implement the method of any of the above-described first aspects and any one of the possible implementations of the first aspect.
  • the functions may be implemented by software, or may be implemented by hardware implementation or a combination of hardware and software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the present application provides a chip, where the chip includes: a detecting unit, configured to detect whether a first user identity SIM card of the terminal device falls back from the first system network to the second system network; and the acquiring unit is configured to When the detecting unit detects that the first SIM card falls back from the first-standard network to the second-standard network, acquires a registration status of the second SIM card, where the registration status includes the operator of the second SIM card and the second SIM card resides.
  • the network wherein the first SIM card and the second SIM card enable the terminal device to operate in the dual card dual standby single pass mode; the obtaining unit is further configured to acquire the target system network according to the registration status of the second SIM card; Registering the first SIM card to the target system network.
  • the modem corresponding to the first SIM card is in a data service connection state.
  • the acquiring is performed.
  • the unit is specifically configured to use the high-standard network in which the second SIM card resides as the target system network.
  • the chip further includes a transceiver unit, the operator of the second SIM card is different from the operator of the first SIM card, or the second SIM card resides at a low level
  • the transceiver unit is configured to send a search notification to the second SIM card, where the search notification is used to indicate the second SIM card search target system network;
  • the obtaining unit is specifically configured to acquire the target system network from the second SIM card, and the target The standard network is the second SIM card indicating that the modem corresponding to the second SIM card is searched by using the downlink radio resource.
  • the transceiver unit referred to herein may be a communication interface.
  • the registration status of the second SIM card further includes whether the second SIM card is installed on the terminal device, and the acquiring unit is specifically configured to determine that the second SIM card is not In the case of being installed on the terminal device, the modem corresponding to the second SIM card is notified to search the target system network by using the downlink radio resource.
  • the first mode network comprises 4G, 4.5G, and 5G
  • the second mode network comprises a 2G network or a 3G network.
  • the present application provides a chip (or a chip system) including a memory and a processor, the memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so that the chip performs the first Aspects and methods in any of its possible implementations.
  • the present application provides a computer program product, comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform the first aspect and any one of its possible implementations Methods.
  • the embodiment of the present application provides a terminal device, including a memory and a processor, where the memory is used to store computer program instructions, and the processor is configured to call and run the computer program instructions from the memory, so that the terminal device performs the first aspect and A method in any of its possible implementations.
  • a target standard network can be determined according to the registration status of the secondary card, and the primary card is registered to the target standard network.
  • the primary card can be returned to the high-standard network.
  • FIG. 1 is a schematic diagram of a design concept of an embodiment of the present application.
  • FIG. 2 is a schematic diagram of interaction between an application chip and a baseband chip in the embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application.
  • FIG. 4 is an application scenario applicable to an embodiment of the present application.
  • FIG. 5 is another schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device 700 provided by the present application.
  • Dual-card dual-standby single-pass It means that two Subscriber Identification Modules (SIMs) installed on the terminal device are continuously switched to ensure that two SIM cards are simultaneously connected to the Internet, but at the same time, there can only be one.
  • SIM Subscriber Identification Module
  • the SIM card performs data services, and the other card can receive downlink messages, including performing cell search, receiving paging, and performing cell measurement.
  • Background search is a method for searching for a high-priority Public Land Mobile Network (PLMN) defined in the 3rd Generation Partnership Project (3GPP), specifically referring to a terminal device.
  • PLMN Public Land Mobile Network
  • 3GPP 3rd Generation Partnership Project
  • the search of other standard cells is performed when the serving cell is normally camped.
  • the background search has a lower priority, and thus does not preempt the downlink time slot of the main working mode of the terminal device (for example, data service), so it is mainly used in some scenarios with low real-time performance.
  • the background search has a lower priority, in many scenarios, the background search is continuously interrupted or delayed by the terminal device's Radio Resource Control (RRC) connection state.
  • RRC Radio Resource Control
  • the high priority network standard is relative to the low priority network standard.
  • a low priority network standard may include 2G, 3G.
  • High-priority network standards can include 4G, 4.5G, and future 5G.
  • the technical solution of the present application is applicable to a terminal device working in a dual card dual standby single pass mode. It is applicable to the case where two SIM cards are installed at the same time on the terminal device or only one SIM card is installed. In other words, for a terminal device in the dual card dual standby single pass mode of operation, both single card users and dual card users are applicable.
  • terminal devices include, but are not limited to, mobile phones, tablet personal computers, media players, smart TVs, laptop computers, ultra-mobile personal computers (UMPCs), netbooks, A personal digital assistant (PDA), a personal computer (Personal Computer), a mobile Internet device (MID), or a wearable device such as a smart watch, etc., is not limited in this application.
  • the technical solution provided by the present application can be applied to various scenarios.
  • the primary card of the terminal device cannot perform data service back to the 4G in the 2G or 3G network.
  • some 2G or 3G networks do not have 4G reselection parameters, or the reselection parameters of the configured 4G network are unreasonable, which causes the terminal device to fail to return to the 4G network after entering the idle state.
  • FIG. 1 is a schematic diagram of a terminal device 100 suitable for use in an embodiment of the present application.
  • the terminal device 100 includes an application processor (AP) 101 and a baseband processor (BP) 102.
  • the application chip is generally responsible for processing data inside the terminal device, and can run a software program, run an operating system, and the like.
  • the baseband chip is mainly responsible for signal processing and protocol processing of communication between the terminal device and the outside world.
  • the interaction process between the application chip 101 and the baseband chip 102 can be seen in FIG. 2.
  • process 1 and process 2 are run on the application chip 101.
  • the process 1 corresponds to the primary card
  • the process 2 corresponds to the secondary card.
  • the baseband chip 102 has its own modem 1 and modem 2. Among them, the modem 1 corresponds to the primary card, and the modem 2 corresponds to the secondary card.
  • the process of returning to the high-standard network is: if the process 1 detects that the primary card is falling from the high-standard network during the running, the primary card is The corresponding modem 1 is always in the data connection state, and the process 1 interacts with the process 2 to notify the process 2 that the primary card is falling back from the high-standard network, and is ready to search for the specified high-standard network.
  • the process 2 instructs the modem 2 corresponding to the secondary card to search for the high-standard network designated by the primary card in the background search manner, and returns the search result to the process 2, and then returns to the process 1 by the process 2.
  • Process 1 in turn instructs modem 1 to register the primary card to the high-standard network, enabling the primary card to return from the low-standard network to the high-standard network. (More details will be provided below.)
  • FIG. 1 and FIG. 2 are described by taking the physical existence of the application chip and the baseband chip as examples.
  • the application chip 101 can be integrated with the baseband chip to become a system on chip (SoC).
  • SoC system on chip
  • both Process 1 and Process 2 run on the SoC, and the SoC also comes with Modem 1 and Modem 2.
  • the modem 1 and the modem 2 shown in FIG. 2 may be physical modems (ie, modems), or two modem modules of the modem protocol stack may share one physical modem.
  • FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • the first system network is a high standard network and the second system network is a low standard network.
  • the high-standard network can also be called a high-priority system network
  • the low-standard network can also be called a low-priority system network.
  • the high-standard network may include a 4G network, a 4.5G network, or a 5G network, and a higher-standard network that appears in the future
  • the low-standard network may include a 2G network and a 3G network.
  • the registration status of a SIM card includes the operator of the SIM card, the network standard in which the SIM card resides, and whether the SIM card is installed on the terminal device.
  • the target system network referred to herein refers to a high-standard network that the primary card expects to return after falling back from the first-standard network to the low-standard network. Therefore, the target system network should be at least a high-standard network compared to the second-standard network. For example, the primary card is dropped from the mobile 4G network to the 2G network, and the primary card is expected to return to the mobile 4G network.
  • the mobile 4G network is the target system network as described in the embodiment of the present application.
  • the registration status of the second SIM includes multiple cases.
  • the following describes various situations of the registration status of the second SIM.
  • the second SIM card is installed on the terminal device
  • the high-standard network where the second SIM card resides is used as the target system network.
  • the modem corresponding to the second SIM card (hereinafter referred to as a second modem) is searched for the target system.
  • the internet The internet.
  • the second SIM card is not installed on the terminal device
  • the second modem is notified to search for the target system network.
  • step 203 the second modem searches for the target system network by means of background search.
  • step 303 after searching for the target system network, the first SIM is registered to the target system network.
  • the modem corresponding to the first SIM card (hereinafter referred to as the first modem) may be notified to register the first SIM card to the target system network.
  • FIG. 4 is an application scenario applicable to an embodiment of the present application.
  • the status bar at the top of the touch screen of the terminal device displays the network system to which the primary card and the secondary card are connected.
  • the first icon from the left to the right of the status bar is the network standard for the main card connection
  • the second icon for the status bar is the network system for the secondary card connection.
  • both the primary and secondary cards are connected to a 4G network, and the primary card is processing data traffic. For example, a user is using a primary card for a voice call or watching a video, and the like.
  • the primary card may fall back from the 4G network to the 2G network, as shown in Figure 4B.
  • the terminal device can prompt the user to drop back to the 2G network by automatically popping up the window, and can let the user select whether to use the secondary card to search for the 4G network.
  • the secondary card performs a 4G network search and returns to the primary card after the search, thereby causing the primary card to return to the 4G network again, as shown by C in FIG.
  • the application scenario in FIG. 4 is only an example, and may also include various specific implementations.
  • the terminal device can configure the primary card to fall back from the 4G to the 2G, the secondary card automatically searches for the 4G network without prompting the user. In this way, the primary card can return to the 4G network without the user's perception.
  • the user may also push a prompt message to prompt the user that the primary card has returned to the high-standard network.
  • the primary card and the secondary card may belong to different operators, and may belong to the same carrier.
  • the technical solutions of the present application are applicable.
  • the primary card belongs to mobile and the secondary card belongs to Unicom.
  • both the primary card and the secondary card are mobile or both belong to China Unicom.
  • the secondary card shown in FIG. 4 is connected to the 4G network.
  • the secondary card can also be connected to a low-standard network such as a 2G network or a 3G network. This application does not limit this.
  • the communication method of the embodiment of the present application is summarized from the perspective of the chip with reference to FIG. 3 and FIG. 4 above.
  • the communication method of the embodiment of the present application is further described in detail below with reference to FIG. 5.
  • FIG. 5 is another schematic flowchart of a communication method according to an embodiment of the present application.
  • process 1 detects that the primary card falls back from the high-standard network to the low-standard network.
  • the primary card falls back from the LTE network (ie, the 4G network) to the 2G network or the 3G network.
  • the primary card is dropped from the high-standard network. Since the primary card always has data services in progress, the modem corresponding to the primary card (hereinafter referred to as the modem 1) is always in the data service connection state.
  • Process 1 and Process 2 are running on the AP, and AP and BP can be arranged separately, or the AP can be integrated on the BP. Therefore, the process 1 described here detects that the primary card is high. If the system network falls back, it may also mean that the entity running Process 1 detects that the primary card has fallen back from the high-standard network.
  • the entity running Process 1 can be an AP or a BP.
  • the processes and/or operations performed by Process 1 and Process 2 described below are actually performed by entities (e.g., BP) running Process 1 and Process 2.
  • entities e.g., BP
  • the interaction between Process 1 and Process 2 in the case where the AP and BP are separately arranged, is the interaction between the entity running Process 1 and the entity running Process 2.
  • Process 1 and Process 2 interact, and Process 1 acquires the registration status of the secondary card.
  • the process 1 determines whether the primary card and the secondary card belong to the same operator, and determines whether the secondary card resides in the high-standard network.
  • step 503 if the result of the determination is "YES”, then the flow of step 504 is performed. If the result of the determination is "NO”, the flow of step 505 is performed.
  • the primary card and the secondary card belong to the same carrier, and the secondary card resides in the high-standard network.
  • the process 1 and the modem 1 pass the steps 5041 and 5042 to return the primary card to the high-standard network.
  • Process 1 directly notifies the modem 1 to register the primary card to the high-standard network where the secondary card resides.
  • this situation is to use the network where the secondary card resides as the target system network.
  • the modem 1 completes the registration of the primary card in the high-standard network, returns the registration result to the process 1, and reports the registration status of the primary card.
  • the primary card and the secondary card do not belong to the same carrier, or the secondary card resides in a low-standard network.
  • the primary card is returned to the high-standard network through steps 5051-5056.
  • Process 1 notifies process 2 to prepare to search for a target system network.
  • the carrier to which the primary card belongs is mobile
  • the carrier to which the secondary card belongs is Unicom
  • the secondary card resides on the 4G network. Then process 1 can notify process 2 to search for the mobile 4G network.
  • Process 2 notifies the modem corresponding to the secondary card to search for the target system network.
  • modem 2 the modem corresponding to the secondary card
  • Modem 2 uses a background search mechanism to perform a PLMN list search.
  • the secondary card uses the discontinuous reception (DRX) time slot to search for other standard cells when the serving cell is normally camped.
  • the modem 2 uses the background search mechanism to search for other surrounding networks to find a high-standard network that allows the primary card to be registered.
  • Modem 2 returns search results to process 2.
  • Process 2 returns search results to process 1.
  • process 2 may return the searched target system network to process 1.
  • Process 1 notifies modem 1 to register the primary card to the target system network.
  • the modem 1 registers the primary card to the target system network, and returns the registration result to the process 1, and reports the registration status of the primary card.
  • the primary card can be returned from the low-standard network to the high-standard network.
  • the secondary card uses the downlink radio resource, searches the high-standard network by using the background search mechanism, and feeds back to the primary card, so that the primary card is re-established. Registering to a high-standard network to solve the problem that the primary card cannot return to the high-standard network after falling back from the high-standard network to the low-standard network when performing data services.
  • both the primary card and the secondary card are installed on the terminal device, that is, the scenario of the dual card user mentioned above.
  • the embodiment of the present application is also applicable.
  • process 1 and process 2 interact, and process 1 acquires the registration status of the secondary card, and at this time, it can be known whether the secondary card is installed on the terminal device, or alternatively, the secondary device can be known. Whether the card is "in place”. If it is determined that the secondary card is not installed on the terminal device, the process 1 can also directly notify the process 2 to search for the target network standard.
  • the subsequent process is similar to that shown in FIG. 5 and will not be described here.
  • the terminal device can fall back from the high-standard network and can return to the high-standard network in 30 seconds to 60 seconds.
  • the terminal device can obtain the coverage of the 4G network in advance, thereby implementing fast registration to the 4G network without the user's perception, thereby improving the user experience.
  • the technical solution of the present application can also quickly return the terminal device to the high-standard network.
  • FIG. 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 includes a detecting unit 610, an obtaining unit 620, and a registration unit 630. among them,
  • the detecting unit 610 is configured to detect whether the first user identity SIM card of the terminal device falls back from the first system network to the second system network;
  • the obtaining unit 620 is configured to acquire a registration status of the second SIM card when the detecting unit detects that the first SIM card is dropped from the first standard network to the second standard network, where the registration status of the second SIM card includes the second SIM The operator of the card and the network where the second SIM card resides, wherein the first SIM card and the second SIM card enable the terminal device to operate in the dual card dual standby single pass mode;
  • the obtaining unit 620 is further configured to acquire the target system network according to the registration status of the second SIM card;
  • the registration unit 630 is configured to register the first SIM card to the target system network.
  • Each unit in the communication device 600 of the embodiment of the present application and the other operations or functions described above are respectively implemented to implement corresponding processes or operations in the communication method provided by the present application.
  • the communication device 600 includes a memory for storing a program, and a processor for executing a program for storing the memory.
  • the communication device 600 can implement the return from the low-standard network to the high-standard network in the embodiment of the present application.
  • the memory and the processor may be physically separate units, or the memory and the processor may be integrated.
  • part or all of the above functions of the communication device 600 may also be implemented by hardware, or a combination of hardware and software.
  • communication device 600 can be a chip or an integrated circuit.
  • communication device 600 can be a SoC chip in a terminal device.
  • the secondary card uses the downlink radio resource, and uses the background search mechanism to search for the high-standard network, which can assist the primary card.
  • the problem that the main card for performing data services in the prior art can be returned to the high-standard network after falling back from the high-standard network to the low-standard network is solved.
  • the embodiment of the present application further provides a terminal device, which can perform the method for returning from a low-standard network to a high-standard network in the embodiment of the present application.
  • the structure of the terminal device can be as shown in FIG.
  • FIG. 7 is a schematic structural diagram of a terminal device 700 provided by the present application. It will be understood by those skilled in the art that the structure shown in FIG. 7 does not constitute a limitation on the terminal device, and the terminal device may include more or less components than those shown in FIG. 7, or combine some components, or different. Assembly of parts, etc.
  • a radio frequency (RF) circuit 710 can be used to transceive information or for receiving and transmitting signals during a call.
  • RF circuit 710 can include, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like.
  • the antenna may include antennas on all mobile phones, for example, a primary antenna and a secondary antenna, wherein the secondary antenna may be a global positioning system (GPS) antenna, a Wi-Fi antenna, an NFC antenna, or the like.
  • GPS global positioning system
  • a plurality of secondary antennas can share one antenna body.
  • RF circuitry 710 can also communicate with the network and other devices via wireless communication techniques.
  • the downlink information sent by the base station may be received, and the received downlink information may be further transmitted to the processor 730 for processing.
  • the uplink data can be sent to the base station.
  • the wireless communication technology may use any communication standard or protocol, including but not limited to global system of mobile communication (GSM), general packet radio service (GPRS), code division multiple access (code) Division multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), e-mail, short messaging service (SMS), and the like.
  • GSM global system of mobile communication
  • GPRS general packet radio service
  • code division multiple access code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • SMS short messaging service
  • the processor 730 can be a control center of the terminal device 700, connecting various portions of the terminal device with various interfaces and lines, by running or executing programs and/or modules stored in the memory 740, and recalling data stored in the memory 740. The various functions of the terminal device 700 are performed.
  • the processor 730 may be composed of an integrated circuit (IC).
  • IC integrated circuit
  • the processor 730 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), ready-made devices.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGA field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is not limited in this embodiment of the present application.
  • the memory 740 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application required for at least one function (for example, a sound playing function, an image playing function, etc.).
  • the storage data area may store data (for example, audio data, image data, phone book, etc.) created according to the use of the terminal device 700, and the like.
  • the memory 740 may include a high speed random access memory, and may also include a nonvolatile memory. For example, at least one disk storage device, flash memory device, or other volatile solid state storage device.
  • the terminal device may further include an input unit 750, a display unit 760, one or more sensors 770, an audio circuit 780, and the like.
  • the input unit 750 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal device 700.
  • input unit 750 can include touch screen 751 and other input devices 752.
  • the display unit 660 can be used to display information input by the user or information provided to the user and various menus of the terminal device 700.
  • the display unit 760 can include a display panel 761.
  • the display panel 751 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the touch screen 751 can cover the display panel 761.
  • the touch screen 751 may be integrated with the display panel 761 to implement the terminal.
  • the at least one sensor 770 may include a motion sensor that can be used to acquire motion data of the terminal device, and thereby determine a motion state of the terminal device, and the like.
  • the at least one sensor 670 may further include other sensors, such as a light sensor, a gravity sensor, and the like.
  • the light sensor can include an ambient light sensor and a proximity light sensor.
  • audio circuit 780, speaker 781, and microphone 782 can provide an audio interface between the user and terminal device 700.
  • the audio circuit 780 can be used to convert the received audio data into an electrical signal and transmit the electrical signal to the speaker 781.
  • the speaker 781 can be used to convert the received electrical signal into a sound signal and output it.
  • the microphone 782 can be used to convert the collected sound signal into an electrical signal and transmit it to an audio circuit, and the audio circuit 780 can convert the received electrical signal into audio data, and then output the audio data to the RF circuit 710. Send to other devices or output audio data to memory 740 for further processing.
  • terminal device 700 may also include a power source 720 (eg, a battery) for powering various components.
  • a power source 720 eg, a battery
  • the power source can be logically coupled to the processor 730 through the power management system to manage functions such as charging, discharging, and power management through the power management system.
  • the terminal device 700 may further include a wireless fidelity (WiFi) module, a Bluetooth module, and the like, and details are not described herein again.
  • WiFi wireless fidelity
  • Bluetooth Bluetooth
  • FIG. 7 only shows a part related to the embodiment of the present application, and the specific technical details are not disclosed. Please refer to the detailed description of the embodiments of the present application.
  • the method for returning from the low-standard network to the high-standard network in the embodiment of the present application may be performed by the processor 730 in the terminal device.
  • the present application further provides a computer readable storage medium having instructions stored therein, when the instructions are executed on a computer, causing the computer to execute the high standard from the low-standard network of the embodiment of the present application The method of the network.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner.
  • multiple units or components may be combined or integrated into another system. Or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application may be in essence or part of the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

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Abstract

本申请提供了一种从低制式网络返回高制式网络的方法，能够解决双卡双待单通模式的终端设备的主卡在进行数据业务时从高制式网络回落至低制式网络之后，无法回到高制式网络的问题。该方法包括：检测到终端设备的第一用户身份识别SIM卡从第一制式网络回落至第二制式网络；获取第二SIM卡的注册状态，该注册状态包括第二SIM卡的运营商以及第二SIM卡所驻留的网络，其中，第一SIM卡和第二SIM卡使终端设备工作在双卡双待单通模式；根据第二SIM卡的注册状态，获取目标制式网络；将第一SIM卡注册到目标制式网络。

Description

一种从低制式网络返回高制式网络的方法和通信装置 技术领域
本申请涉及通信领域，尤其涉及一种从低制式网络返回高制式网络的方法和通信装置。
背景技术
长期演进(Long Term Evolution，LTE)网络作为一种高制式网络，目前已经广泛布网，终端设备是否可以注册在LTE网络上已经成为用户评估终端设备通信能力的一个重要指标。而在一些应用场景下，终端设备从高制式网络回落至低制式网络(例如，2G网络或3G网络)之后，无法回到高制式网络，严重影响了用户体验。
发明内容
本申请提供一种从低制式网络返回高制式网络的方法，该方法能够在终端设备从高制式网络回落至低制式网络的情况下，使终端设备返回到高制式网络。
第一方面，本申请提供一种通信方法，该方法包括：检测到终端设备上的第一用户身份识别SIM卡从第一制式网络回落至第二制式网络；获取第二SIM卡的注册状态，该注册状态包括第二SIM卡的运营商以及第二SIM卡驻留的网络，其中，第一SIM卡和第二SIM卡使终端设备工作在双卡双待单通模式；根据第二SIM卡的注册状态，获取目标制式网络；将第一SIM卡注册到目标制式网络。
结合第一方面，在第一方面的某些实现方式中，第一SIM卡对应的调制解调器处于数据业务连接态。
结合第一方面，在第一方面的某些实现方式中，第一制式网络包括4G网络、4.5G网络或5G网络，第二制式网络包括2G网络或3G网络。
结合第一方面，在第一方面的某些实现方式中，根据第二SIM卡的注册状态，获取目标制式网络，包括：若第二SIM卡的运营商与第一SIM卡的运营商相同，且第二SIM卡驻留在高制式网络，则将第二SIM卡所驻留的高制式网络作为目标制式网络。
结合第一方面，在第一方面的某些实现方式中，根据第二SIM卡的注册状态，获取目标制式网络，包括：若第二SIM卡的运营商与第一SIM卡的运营商不同，或者第二SIM卡驻留在低制式网络，则向第二SIM卡发送搜索通知，搜索通知用于指示第二SIM卡搜索目标制式网络；从第二SIM卡获取目标制式网络，目标制式网络是第二SIM卡对应的调制解调器利用下行射频资源搜索到的。
结合第一方面，在第一方面的某些实现方式中，第二SIM卡的注册状态包括第二SIM卡是否安装在终端设备上，以及，根据第二SIM卡的注册状态，获取目标制式网络，包括：若确定第二SIM卡未安装在终端设备上，则通知第二SIM卡对应的调制解调器搜索目标制式网络；从第二SIM卡对应的调制解调器获取目标制式网络。
第二方面，本申请提供一种从低制式网络回到高制式网络的方法，该方法应用于包括第一SIM卡和第二SIM卡的终端设备，第一SIM卡和第二SIM卡使终端设备工作在双卡双待单通的工作模式。其中，主卡连接在第一制式网络，若主卡在处理数据业务(例如，语音或视频等业务)的过程中从第一制式网络制式回落到第二制式网络，且回落到第二制式网络后，主卡的数据业务并未停止，则主卡对应的调制解调器会一直处于数据连接态，进而使得主卡无法采用优先级较低的背景搜机制为主卡重新搜索高制式网络，导致主卡无法返回高制式网络。背景搜机制是指SIM卡在驻留于服务小区的过程中，利用下行非连续接收不连续接收(Discontinuous Reception，DRX)时隙搜索制式小区的一种方式。而处于双卡双待单通工作模式的终端设备，在同一时刻仅能支持一张SIM卡进行数据业务，而另一张SIM卡可以接收下行信息和/或数据，例如小区搜索、接收寻呼消息和进行业务测量等，并不会影响进行数据业务的SIM卡。因此，终端设备在检测到主卡从第一制式网络回落至第二制式网络后，若主卡的数据业务还在持续，则终端设备获取第二SIM卡的注册状态，第二SIM的注册状态包括第二SIM卡所属的运营商和第二SIM卡驻留的网络等信息。若终端设备确定第一SIM卡和第二SIM卡属于同一个运营商，且副卡驻留在高制式网络，则终端设备将第一SIM卡直接注册到第二SIM卡所驻留的高制式网络，从而可以让主卡返回高制式网络。若终端设备发现第一SIM卡和第二SIM卡属于不同的运营商，或者第一SIM卡和第二SIM卡虽然属于相同的运营商，但第二SIM卡驻留在低制式网络，则终端设备指示第二SIM卡搜索目标制式网络，也即指示第二SIM搜索某个特定的高制式网络。在搜索到目标制式网络后，终端设备将第一SIM卡注册到目标制式网络，从而可以让第一SIM卡返回到高制式网络。
这里，第一制式网络包括4G网络、4.5G网络和5G网络以及未来通信系统中可能出现的高制式网络。第二制式网络可以包括2G网络、3G网络等低制式网络。
第三方面，本申请提供了一种通信装置，该装置具有实现上述第一方面及其第一方面任意一种可能的实现方式中的方法的功能。所述功能可以通过软件实现，或者也可以通过硬件实现或硬件和软件的结合实现。所述硬件或软件包括一个或多个与上述功能相对应的单元。
第四方面，本申请提供一种芯片，该芯片包括：检测单元，用于检测终端设备的第一用户身份识别SIM卡是否从第一制式网络回落到第二制式网络；获取单元，用于在检测单元检测到第一SIM卡从第一制式网络回落到第二制式网络的情况下，获取第二SIM卡的注册状态，该注册状态包括第二SIM卡的运营商以及第二SIM卡驻留的网络，其中，第一SIM卡和第二SIM卡使终端设备工作在双卡双待单通模式；获取单元还用于根据第二SIM卡的注册状态，获取目标制式网络；注册单元，用于将第一SIM卡注册到目标制式网络。
结合第四方面，在第四方面的某些实现方式中，第一SIM卡对应的调制解调器处于数据业务连接态。
结合第四方面，在第四方面的某些实现方式中，在第二SIM卡的运营商与第一SIM卡的运营商相同，且第二SIM卡驻留在高制式网络的情况下，获取单元具体用于则将第二SIM卡所驻留的高制式网络作为目标制式网络。
结合第四方面，在第四方面的某些实现方式中，该芯片还包括收发单元，在第二SIM 卡的运营商与第一SIM卡的运营商不同，或者第二SIM卡驻留在低制式网络的情况下，该收发单元用于向第二SIM卡发送搜索通知，搜索通知用于指示第二SIM卡搜索目标制式网络；获取单元具体用于从第二SIM卡获取目标制式网络，目标制式网络是第二SIM卡指示第二SIM卡对应的调制解调器利用下行射频资源搜索到的。
此处所说的收发单元可以是一个通信接口。
结合第四方面，在第四方面的某些实现方式中，第二SIM卡的注册状态还包括第二SIM卡是否安装在终端设备上，以及，获取单元具体用于在确定第二SIM卡未安装在终端设备上的情况下，通知第二SIM卡对应的调制解调器利用下行射频资源搜索目标制式网络。
结合第四方面，在第四方面的某些实现方式中，第一制式网络包括4G、4.5G和5G，第二制式网络包括2G网络或3G网络。
第五方面，本申请提供一种芯片(或者，芯片系统)，包括存储器和处理器，存储器用于存储计算机程序，处理器用于从存储器中调用并运行该计算机程序，使得该芯片执行上述第一方面及其任意一种可能的实现方式中的方法。
第六方面，本申请提供一种计算机程序产品，该计算机程序产品包括计算机程序代码，当该计算机程序代码在计算机上运行时，使得计算机执行上述第一方面及其任意一种可能的实现方式中的方法。
第七方面，本申请实施例提供一种终端设备，包括存储器和处理器，存储器用于存储计算机程序指令，处理器用于从存储器中调用并运行计算机程序指令，使得终端设备执行上述第一方面及其任意一种可能的实现方式中的方法。
本申请的技术方案，在终端设备上的主卡从第一制式网络回落至第二制式网络的情况下，根据副卡的注册状态可以确定一个目标制式网络，并让主卡注册到目标制式网络。在目标制式网络为高制式网络的情况下，就可以使主卡返回到高制式网络。
附图说明
图1是本申请实施例的设计构思的示意图。
图2是本申请实施例中应用芯片和基带芯片的交互示意图。
图3是本申请实施例的通信方法300的示意性流程图。
图4是适用于本申请实施例的一个应用场景。
图5是根据本申请实施例的通信方法的另一示意性流程图。
图6是本申请实施例的通信装置600的示意性框图。
图7为本申请提供的终端设备700的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
首先，对本申请实施例中涉及的相关概念作简单介绍。
双卡双待单通：是指安装在终端设备的两张用户身份识别卡(Subscriber Identification Module，SIM)卡通过不断切换，保证两张SIM卡同时待机联网，但是在同一时刻，只能有一张SIM卡进行数据业务，而另一张卡可以接收下行消息，包括进行小区搜索、接收 寻呼和进行小区测量等业务。
背景搜是第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)中定义的用于搜索高优先级的公共陆地移动网络(Public Land Mobile Network，PLMN)的一种方式，具体是指终端设备在服务小区正常驻留的情况下进行其它制式小区的搜索。背景搜的优先级较低，因而不会抢占终端设备的主要工作模式(例如，数据业务)的下行时隙，所以主要应用于一些实时性不高的场景下。同时，也正是由于背景搜的优先级较低，因此在很多场景下，背景搜会不断被终端设备的无限资源控制(Radio Resource Control，RRC)连接态打断或者迟滞。
此外，在本申请实施例中，高优先级的网络制式是相对于低优先级的网络制式而言的。例如，低优先级的网络制式可以包括2G、3G。高优先级的网络制式可以包括4G、4.5G以及未来的5G。
本申请的技术方案适用于工作在双卡双待单通模式的终端设备。对于终端设备上同时安装了两张SIM卡或者仅安装了一张SIM卡的情况都是适用的。换句话说，对于以双卡双待单通工作模式的终端设备，不管是单卡用户，还是双卡用户都是适用的。
这些终端设备包括但不限于，移动电话、平板个人电脑(Tablet Personal Computer)、媒体播放器、智能电视、笔记本电脑(Laptop Computer)、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)、个人计算机(Personal Computer)、移动上网装置(Mobile Internet Device，MID)或智能手表等可穿戴式设备(Wearable Device)等，本申请对此不作限定。
本申请提供的技术方案可以应用于多种场景，例如，终端设备的主卡在2G或3G网络一直进行数据业务无法回到4G。又例如，一些2G或3G网络没有配置4G的重选参数，或者配置的4G网络的重选参数不合理，导致终端设备在进入空闲态之后无法回到4G网络等。
下面对本申请实施例的通信方法进行详细说明。
图1是适用于本申请实施例的终端设备100的示意图。参见图1，终端设备100包括应用芯片(Application Processor，AP)101和基带芯片(Baseband Processor，BP)102。其中，应用芯片一般负责处理终端设备内部的数据，可以运行软件程序、运行操作系统等。而基带芯片主要负责终端设备与外界之间通信的信号处理和协议处理等。本申请实施例中，应用芯片101和基带芯片102之间的交互过程可以参见图2。
图2是本申请实施例中应用芯片和基带芯片的交互示意图。如图2所示，应用芯片101上运行有进程1和进程2。其中，进程1与主卡对应，进程2与副卡对应。基带芯片102上自带调制解调器1和调制解调器2。其中，调制解调器1与主卡对应，调制解调器2与副卡对应。在本申请实施例中，主卡从高制式网络回落至低制式网络后，重新回到高制式网络的过程是：进程1在运行过程中如果检测到主卡从高制式网络回落，而主卡对应的调制解调器1一直处于数据连接态，则进程1通过与进程2进行交互，通知进程2主卡从高制式网络回落，准备搜索指定的高制式网络。从而，进程2指示副卡对应的调制解调器2采用背景搜的方式搜索主卡指定的高制式网络，并将搜索结果返回给进程2，再由进程2返回给进程1。进程1进而指示调制解调器1将主卡注册到该高制式网络，实现主卡从低制式网络回到高制式网络。(下文会进一步作详细说明。)
需要说明的是，图1和图2中是以应用芯片和基带芯片在物理上独立存在作为示例进行说明的。在另一种可能的实现方式中，应用芯片101可以和基带芯片集成在一起，成为一个系统级芯片(System on Chip，SoC)。此种情况下，进程1和进程2都运行在SoC上，同时，SoC上还自带调制解调器1和调制解调器2。
其中，图2中所示的调制解调器1和调制解调器2可以是物理上的调制解调器(也即modem)，或者也可以是modem协议栈的两个modem模块公用一个物理的modem。
以下，以应用芯片和基带芯片集成在一起作为示例，对本申请实施例的通信方法作详细说明。因此，以下各方法实施例可以看作是由集成了应用芯片的基带芯片执行的。
参见图3，图3是本申请实施例的通信方法的示意性流程图。
301、检测到第一SIM卡从第一制式网络回落至第二制式网络。
通常，第一制式网络为一个高制式网络，而第二制式网络为一个低制式网络。其中，高制式网络也可以称作高优先级制式网络，低制式网络也可以称作低优先级制式网络。高制式网络可以包括4G网络、4.5G网络或5G网络以及未来的出现的更高制式的网络，低制式网络可以包括2G网络和3G网络等。
302、获取第二SIM的注册状态。
在本申请实施例中，一个SIM卡的注册状态包括该SIM卡的运营商、该SIM卡驻留的网络制式以及该SIM卡是否安装在终端设备上。
303、根据第二SIM的注册状态，获取目标制式网络。
需要说明的是，这里所说的目标制式网络是指主卡从第一制式网络回落到低制式网络之后期望返回的高制式网络。因此，目标制式网络与第二制式网络相比，至少应该是一个高制式网络。例如，主卡从移动的4G网络回落至2G网络，而主卡期望重新回到移动的4G网络，那么移动的4G网络则是本申请实施例中所说的目标制式网络。
可以理解的是，在步骤303中，第二SIM的注册状态包括多种情况。下面针对第二SIM的注册状态的各种情况一一进行介绍。
情况1
第二SIM卡安装在终端设备上
在确定第二SIM卡安装在终端设备上的情况下，进一步地，还需要获取第二SIM卡注册的运营商以及第二SIM驻留的网络。
若第二SIM卡的运营商与第一SIM卡的运营商相同，且第二SIM卡驻留于高制式网络，则将第二SIM卡驻留的高制式网络作为目标制式网络。
若第二SIM卡的运营商与第一SIM卡的运营商不同，或者第二SIM卡驻留于低制式网络，则通知第二SIM卡对应的调制解调器(以下称作第二调制解调器)搜索目标制式网络。
情况2
第二SIM卡未安装在终端设备上
在确定终端设备上未安装第二SIM卡的情况下，则通知第二调制解调器搜索目标制式网络。
需要说明的是，步骤203中第二调制解调器是通过背景搜的方式搜索目标制式网络的。
304、将第一SIM卡注册到目标制式网络。
经过步骤303，搜索到目标制式网络后，将第一SIM注册到目标制式网络。
具体地，可以通知第一SIM卡对应的调制解调器(以下称作第一调制解调器)将第一SIM卡注册到目标制式网络。
以上对本申请实施例的通信方法作了详细说明。可见，通过本申请实施例的技术方案，在终端设备的主卡从高制式网络回落到低制式网络的情况下，通过副卡的下行射频资源进行背景搜，可以协助主卡返回到高制式网络。
参见图4，图4是适用于本申请实施例的一种应用场景。如图4所示，终端设备(例如，手机)的触摸屏顶部的状态栏显示有主卡和副卡所连接的网络制式的情况。假定状态栏从左往右的第一个图标为主卡连接的网络制式，状态栏的第二个图标为副卡连接的网络制式。在图4中A所示的场景下，主卡和副卡均连接在4G网络，并且主卡正在处理数据业务。例如，用户正在使用主卡进行语音通话或看视频等。假定用户移动到一个信号较差的位置(例如，进入电梯或者移动到无4G网络覆盖的区域)，主卡可能会从4G网络回落到2G网络，如图4中B所示的场景。此种情况下，终端设备可以通过自动弹窗的方式提示用户主卡回落到2G网络，并可以让用户选择是否采用副卡搜索4G网络。用户在选择“是”的情况下，副卡会进行4G网络搜索，并在搜索到之后返回给主卡，从而让主卡重新返回到4G网络，如图4中的C所示。
应理解，图4中的应用场景仅是作为一个示例，还可以包括多种具体的实现方式。例如，终端设备可以配置主卡从4G回落到2G的情况下，由副卡自动进行4G网络的搜索，而不向用户进行提示。这样，主卡可以在用户无感知的情况下，返回到4G网络。又例如，在主卡返回高制式网络后，也可以向用户推送提示信息，以提示用户主卡已经返回高制式网络等。
并且，在图4中所示的应用场景下，主卡和副卡可以属于不同的运营商，也可以属于相同的运营商，本申请的技术方案都是使适用的。例如，主卡属于移动，而副卡属于联通。或者，主卡和副卡都属于移动或都属于联通。
另外，图4中所示的副卡连接在4G网络。在一些应用场景下，副卡也可以连接在2G网络或者3G网络等低制式网络。本申请对此不作限定。
上面结合图3和图4，从芯片的角度对本申请实施例的通信方法作了概述。下面结合图5对本申请实施例的通信方法作进一步详细说明。
参见图5，图5是根据本申请实施例的通信方法的另一示意性流程图。
501、进程1检测到主卡从高制式网络回落到低制式网络。
例如，主卡从LTE网络(也即，4G网络)回落至2G网络或3G网络。
需要说明的是，主卡从高制式网络回落，由于主卡一直有数据业务在进行，因而主卡对应的调制解调器(以下记作调制解调器1)还一直处于数据业务连接态。
需要说明的是，如前文所述，进程1和进程2运行在AP上，而AP和BP可以单独布置，或者AP也可以集成在BP上，因此，这里所说的进程1检测主卡从高制式网络回落，也可以是指运行进程1的实体检测到主卡从高制式网络回落。其中，运行进程1的实体可以是AP或BP。类似地，以下描述的进程1和进程2执行的流程和/或操作实际上都是由运行进程1和进程2的实体(例如，BP)执行的。进程1和进程2之间的交互，在 AP和BP单独分开布置的情况下，则分别是运行进程1的实体和运行进程2的实体之间的交互。
502、进程1和进程2交互，进程1获取到副卡的注册状态。
关于副卡的注册状态的说明可以参见上文，这里不再赘述。
503、进程1判断主卡和副卡是否属于同一个运营商，并判断副卡是否驻留于高制式网络。
在步骤503，如果判断的结果为“是”，则对应步骤504的流程。如果判断的结果为“否”，则对应步骤505的流程。
504、主卡和副卡属于同一个运营商，且副卡驻留于高制式网络。
在这种情况下，进程1和调制解调器1之间通过步骤5041和步骤5042，让主卡返回高制式网络。
5041、进程1直接通知调制解调器1将主卡注册到副卡所驻留的高制式网络。
也就是说，这种情况是将副卡驻留的网络作为目标制式网络。
5042、调制解调器1完成主卡在高制式网络的注册，向进程1返回注册结果，以上报主卡的注册状态。
505、主卡和副卡不属于同一个运营商，或者副卡驻留在低制式网络。
在这种情况下，通过步骤5051-5056，让主卡返回高制式网络。
5051、进程1通知进程2准备搜索目标制式网络。
例如，主卡所属的运营商是移动，而副卡所属的运营商是联通，且副卡驻留在4G网络。则进程1可以通知进程2搜索移动的4G网络。
5052、进程2通知副卡对应的调制解调器搜索目标制式网络。
这里，我们将副卡对应的调制解调器记作调制解调器2。
5053、调制解调器2采用背景搜机制，进行PLMN列表搜索。
关于背景搜机制，上文已经作了介绍。具体到本申请实施例，即是说副卡在服务小区正常驻留的情况下，利用不连续接收(discontinuous reception，DRX)时隙搜索其它制式小区。在本文中，调制解调器2利用背景搜机制，搜索周围其它制式网络，以找到可以让主卡注册的高制式网络。
5054、调制解调器2向进程2返回搜索结果。
5055、进程2向进程1返回搜索结果。
在步骤5054-5055中，进程2可以向进程1返回搜索到的目标制式网络。或者也可以返回PLMN列表，由进程1从中选择满足条件的目标制式网络。
5056、进程1通知调制解调器1，将主卡注册到目标制式网络。
后续，调制解调器1将主卡注册到目标制式网络，并向进程1返回注册结果，以上报主卡的注册状态。
通过以上流程，可以实现主卡从低制式网络返回高制式网络。
本申请实施例的通信方法，终端设备的主卡从高制式网络回落至低制式网络之后，副卡利用下行射频资源，采用背景搜机制搜索高制式网络并反馈给主卡，从而让主卡重新注册到高制式网络，以解决主卡在进行数据业务时，若从高制式网络回落到低制式网络后，无法返回高制式网络的问题。
需要说明的是，图5中所示的流程中，主卡和副卡均安装在终端设备上，也就是上文所说的双卡用户的场景。而对于单卡用户，本申请实施例也是适用的。具体地，与上述图5类似，在步骤502中，进程1和进程2交互，进程1获取副卡的注册状态，此时可以获知副卡是否安装在终端设备上，也或者说，可以获知副卡是否“在位”的状态。如果确定副卡未安装在终端设备上，那么进程1也可以直接通知进程2搜索目标网络制式。后续的流程与图5中所示都是类似的，这里不再赘述。
实际上，大部分用户都是短时间从高制式网络(例如LTE网络)掉落，结合实际测试验证结果，没有采用本方案的终端设备一直无法回到高制式网络。而采用本申请的技术方案，终端设备从高制式网络回落后，能够在30秒-60秒返回到高制式网络。
此外，针对掉落至2G/3G网络后一直处于数据业务连接态而无法回到4G网络的终端设备，现有技术一般只能通过关闭数据业务、开关“4G开关”或者开关“飞行模式”才可能恢复4G网络，用户体验极差。采用本申请的技术方案，使得终端设备能够提前获取4G网络覆盖情况，从而在用户无感知的情况下实现快速注册到4G网络，提升了用户体验。
此外，针对短时间进行数据业务的用户，或者网络没有配合异系统的场景下，采用本申请的技术方案，也可以使终端设备快速回到高制式网络。
以上，对本申请实施例的通信方法作了详细说明，下面说明本申请实施例的通信装置。
参见图6，图6是本申请实施例的通信装置600的示意性框图。如图6所示，通信装置600包括检测单元610、获取单元620和注册单元630。其中，
检测单元610，用于检测终端设备的第一用户身份识别SIM卡是否从第一制式网络回落至第二制式网络；
获取单元620，用于在检测单元检测到第一SIM卡从第一制式网络回落至第二制式网络的情况下，获取第二SIM卡的注册状态，第二SIM卡的注册状态包括第二SIM卡的运营商以及第二SIM卡驻留的网络，其中，第一SIM卡和第二SIM卡使终端设备工作在双卡双待单通模式；
获取单元620，还用于根据第二SIM卡的注册状态，获取目标制式网络；
注册单元630，用于将第一SIM卡注册到目标制式网络。
本申请实施例的通信装置600中的各单元和上述其它操作或功能分别为了实现本申请提供的通信方法中的相应流程或操作。
在一种可能的设计中，通信装置600的上述功能的部分或全部可以通过软件实现。例如，通信装置600包括存储器和处理器，存储器用于存储程序，处理器用于执行存储器存储的程序，当程序被执行时，通信装置600可以实现本申请实施例的从低制式网络返回高制式网络的方法。其中，存储器和处理器可以是物理上相互独立的单元，或者，存储器和处理器也可以集成在一起。
在一种可能的设计中，通信装置600的上述功能的部分或全部还可以通过硬件，或者硬件和软件结合的方式实现。
可选地，通信装置600可以是芯片或集成电路。例如，通信装置600可以是终端设备中的SoC芯片。
本申请提供的通信装置，在终端设备上进行数据业务的主卡从高制式网络回落至低制式网络的情况下，副卡利用下行射频资源，采用背景搜机制搜索高制式网络，可以协助主 卡重新回到高制式网络，解决了现有技术中进行数据业务的主卡从高制式网络回落到低制式网络后，无法返回高制式网络的问题。
此外，本申请实施例还提供一种终端设备，可以执行本申请实施例的从低制式网络返回高制式网络的方法。终端设备的结构可以如图7所示。
图7为本申请提供的终端设备700的示意性结构图。本领域技术人员可以理解，图7中示出的结构并不构成对终端设备的限定，终端设备可以包括比图7示出的更多或更少的部件，或者组合某些部件，或者不同的部件布置等。
射频(radio frequency，RF)电路710可用于收发信息或用于在通话过程中的信号的接收和发送。通常，RF电路710可以包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(low noise amplifier，LNA)、双工器等。其中的天线可以包括所有手机上的天线，例如：主天线和副天线，其中，副天线可以为全球定位系统(global positioning system，GPS)天线、Wi-Fi天线、NFC天线等。多种副天线可以共用一个天线本体。此外，RF电路710还可以通过无线通信技术与网络和其他设备通信。例如，可以接收基站发送的下行信息，并且可以进一步将接收到的下行信息传输至处理器730进行处理。或者可以向基站发送上行数据。该无线通信技术可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(global system of mobile communication，GSM)、通用分组无线服务(general packet radio service，GPRS)、码分多址(code division multiple access，CDMA)、宽带码分多址(wideband code division multiple access,WCDMA)、长期演进(long term evolution，LTE)、电子邮件、短消息服务(short messaging service，SMS)等。
处理器730可以是终端设备700的控制中心，利用各种接口和线路连接终端设备的各个部分，通过运行或执行存储在存储器740中的程序和/或模块，以及调用存储在存储器740内的数据，执行终端设备700的各种功能。
可选地，处理器730可以由集成电路(integrated circuit，IC)组成。例如，可以由单独封装的IC所组成，也可以由连接多个具有相同功能或不同功能的封装IC而组成。处理器730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，本申请实施例对此不做限定。
存储器740可主要包括存储程序区和存储数据区。其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(例如，声音播放功能、图像播放功能等)等。存储数据区可存储根据终端设备700的使用所创建的数据(例如，音频数据、图像数据、电话本等)等。此外，存储器740可以包括高速随机存取存储器，还可以包括非易失性存储器。例如，至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
此外，终端设备还可以包括输入单元750、显示单元760、一个或多个传感器770以及音频电路780等。
输入单元750可以用于接收输入的数字或字符信息，以及产生与终端设备700的用户设置以及功能控制有关的键信号输入。具体地，输入单元750可以包括触摸屏751以及其 他输入设备752。显示单元660可以用于显示由用户输入的信息或向用户提供的信息以及终端设备700的各种菜单。显示单元760可以包括显示面板761，可选的，可以采用液晶显示器(liquid crystal display，LCD)、有机发光二极管(organic light-emitting diode,OLED)等形式来配置显示面板751。进一步的，触摸屏751可覆盖显示面板761。虽然在图7中，触摸屏751与显示面板761是作为两个独立的部件来实现终端设备700的输入和输入功能，但是在某些实施例中，可以将触摸屏751与显示面板761集成而实现终端设备700的输入和输出功能。上述至少一个传感器770可以包括运动传感器，该运动传感器可以用于获取终端设备的运动数据，并由此确定终端设备的运动状态等。可选地，该至少一个传感器670还可以包括其它传感器，例如，光传感器、重力传感器(gravity sensor)等。具体地，光传感器可包括环境光传感器和接近光传感器。
可选地，音频电路780、扬声器781和麦克风782可以提供用户与终端设备700之间的音频接口。音频电路780可以用于将接收到的音频数据转换为电信号，并将电信号传输到扬声器781。扬声器781可以用于将接收到的电信号转换为声音信号后将其输出。另一方面，麦克风782可以用于将收集的声音信号转换为电信号，并传输至音频电路，音频电路780可以将接收到的电信号转换为音频数据，再将音频数据输出至RF电路710以发送给其它设备，或者将音频数据输出至存储器740以便进一步处理。
可选地，终端设备700还可以包括用于为各个部件供电的电源720(例如，电池)。优选的，电源可以通过电源管理系统与处理器730逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
应理解，尽管并未示出，终端设备700还可以包括无线保真(wireless fidelity，WiFi)模块、蓝牙模块等，在此不再赘述。
还应理解，为了便于说明，图7仅示出了与本申请实施例相关的部分，具体技术细节未揭示的，请参照本申请各实施例的具体描述。
本申请实施例的从低制式网络返回高制式网络的方法可以是由终端设备中的处理器730执行。
此外，本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当所述指令在计算机上运行时，使得计算机执行本申请实施例的从低制式网络返回高制式网络的方法。
应理解，为了简洁，本文对于实施例的描述着重于强调各个实施例的不同之处。因此，除非文中明确说明或者可以从上下文看出，本文各个实施例之间可以相互参考。
本领域普通技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现。为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，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。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通 过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的。例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。例如，多个单元或组件可以结合或者可以集成到另一个系统。或一些特征可以忽略或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (15)

  1. 一种从低制式网络返回高制式网络的方法，其特征在于，所述方法包括：
    检测到终端设备的第一用户身份识别SIM卡从第一制式网络回落到第二制式网络；
    获取第二SIM卡的注册状态，所述注册状态包括所述第二SIM卡的运营商以及所述第二SIM卡驻留的网络，其中，所述第一SIM卡和所述第二SIM卡使所述终端设备工作在双卡双待单通模式；
    根据所述第二SIM卡的注册状态，获取目标制式网络；
    将所述第一SIM卡注册到所述目标制式网络。
  2. 根据权利要求1所述的方法，其特征在于，所述第一SIM卡对应的调制解调器处于数据业务连接态。
  3. 根据权利要求1或2所述的方法，其特征在于，所述根据所述第二SIM卡的注册状态，获取目标制式网络，包括：
    若所述第二SIM卡的运营商与所述第一SIM卡的运营商相同，且所述第二SIM卡驻留于高制式网络，则将所述第二SIM驻留的高制式网络作为所述目标制式网络。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述根据所述第二SIM卡的注册状态，获取目标制式网络，包括：
    若所述第二SIM卡的运营商与所述第一SIM卡的运营商不同，或者所述第二SIM卡驻留于低制式网络，则向所述第二SIM卡发送搜索通知，所述搜索通知用于指示所述第二SIM卡搜索所述目标制式网络；
    从所述第二SIM卡获取所述目标制式网络，所述目标制式网络是所述第二SIM卡对应的调制解调器利用下行射频资源搜索到的。
  5. 根据权利要求1或2所述的方法，其特征在于，所述第二SIM卡的注册状态还包括所述第二SIM卡是否安装在所述终端设备上，
    以及，所述根据所述第二SIM卡的注册状态，获取目标制式网络，包括：
    若确定所述第二SIM卡未安装在所述终端设备上，则通知所述第二SIM卡对应的调制解调器利用下行射频资源搜索所述目标制式网络；
    从所述第二SIM卡对应的调制解调器获取所述目标制式网络。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第一制式网络包括4G、4.5G和5G，所述第二制式网络包括2G网络或3G网络。
  7. 一种通信装置，其特征在于，包括：
    检测单元，用于检测终端设备的第一用户身份识别SIM卡是否从第一制式网络回落到第二制式网络；
    获取单元，用于在所述检测单元检测到所述第第一SIM卡从所述第一制式网络回落至第二制式网络的情况下，获取第二SIM卡的注册状态，所述注册状态包括所述第二SIM卡的运营商以及所述第二SIM卡驻留的网络，其中，所述第一SIM卡和所述第二SIM卡使所述终端设备工作在双卡双待单通模式；
    所述获取单元，还用于根据所述第二SIM卡的注册状态，获取目标制式网络；
    注册单元，用于将所述第一SIM卡注册到所述目标制式网络。
  8. 根据权利要求7所述的通信装置，其特征在于，所述第一SIM卡对应的调制解调器处于数据业务连接态。
  9. 根据权利要求7或8所述的通信装置，其特征在于，所述获取单元具体用于：
    若所述第二SIM卡的运营商与所述第一SIM卡的运营商相同，且所述第二SIM卡驻留在高制式网络，则将所述第二SIM卡所驻留的高制式网络作为所述目标制式网络。
  10. 根据权利要求7至9中任一项所述的通信装置，其特征在于，所述通信装置还包括收发单元，所述收发单元具体用于：
    若所述第二SIM卡的运营商与所述第一SIM卡的运营商不同，或者所述第二SIM卡驻留在低制式网络，则向所述第二SIM卡发送搜索通知，所述搜索通知用于指示所述第二SIM卡搜索所述目标制式网络；
    所述获取单元还用于从所述第二SIM卡获取所述目标制式网络，所述目标制式网络是所述第二SIM卡对应的调制解调器利用下行射频资源搜索到的。
  11. 根据权利要求7或8所述的通信装置，其特征在于，所述第二SIM卡的注册状态还包括所述第二SIM卡是否安装在所述终端设备上，
    以及，所述获取单元具体用于：
    若确定所述第二SIM卡未安装在所述终端设备上，则通知所述第二SIM卡对应的调制解调器利用下行射频资源搜索所述目标制式网络。
  12. 根据权利要求7至11中任一项所述的通信装置，其特征在于，所述第一制式网络包括4G、4.5G和5G，所述第二制式网络包括2G网络或3G网络。
  13. 一种芯片，其特征在于，包括存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述芯片执行如权利要求1至6中任一项所述的方法。
  14. 一种终端设备，其特征在于，包括存储器和处理器，所述存储器用于存储计算机程序指令，所述处理器用于从所述存储器中调用并运行所述计算机程序指令，使得所述终端设备执行如权利要求1至6中任一项所述的方法。
  15. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当所述指令在计算机上运行时，使得计算机执行如权利要求1至6中任一项所述的方法。
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