Dual-card cooperative work method and device, terminal equipment and chip

Abstract

The application discloses a dual-card cooperative working method and device, a terminal device and a chip, relates to the technical field of communication, and is applied to a terminal device with two SIM cards. The method comprises the following steps: acquiring cell search result information of a first SIM card in the two SIM cards, wherein the cell search result information comprises a target frequency point, and information about whether the cell corresponding to the target frequency point is successfully camped; saving the cell search result information in an acquisition database (Acq DB) of the first SIM card; and determining whether the cell search result information is saved in an Acq DB of a second SIM card in the two SIM cards again or not saved in the Acq DB of the second SIM card again according to a comparison relationship between the respective operators of the two SIM cards and the information about whether the cell is successfully camped. In this way, the information is shared between the two Acq DBs, so that the working efficiency and working performance of the dual cards are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a dual-card cooperative working method and device, a terminal device and a chip. BACKGROUND

[0002] With the development of communication technology, many terminal devices have dual-card function, which are called dual-card terminal devices. Dual-card refers to installing two Subscriber Identity Module (SIM) cards on a terminal device, so as to access the network through the two SIM cards to perform related communication processes.

[0003] In the network searching and registration process of the dual-card terminal device, the two SIM cards will each independently perform the processes of Public Land Mobile Network (PLMN) selection, frequency scanning, cell search, cell selection, cell camping, etc., and store the respective search results of cell search in the respective Acquisition Database (Acq DB).

[0004] Since the two Acq DBs of the two SIM cards are two independent files in the Non-Volatile Memory (NVM) at present, and the information stored in the two Acq DBs has poor correlation, it leads to poor efficiency of the dual-card terminal device in completing the entire dual-card network searching and registration processes, affecting the network working performance of the dual-card terminal device. SUMMARY

[0005] The present application provides a dual-card cooperative working method and device, a terminal device and a chip, in order to improve the working efficiency of the dual-card terminal device in completing the entire dual-card network searching and registration processes, so as to improve the network working performance of the dual-card terminal device.

[0006] In a first aspect, a dual-card cooperative working method is provided, applied to a terminal device having two Subscriber Identity Module (SIM) cards; the method comprises:

[0007] obtaining cell search result information of a first SIM card in the two SIM cards, the cell search result information comprising a target frequency point, camping success or failure information of a cell corresponding to the target frequency point, and the camping success or failure information being used to indicate that the cell corresponding to the target frequency point is camped successfully or the cell corresponding to the target frequency point is camped unsuccessfully;

[0008] save the cell search result information in an acquisition database (Acq DB) of the first SIM card, and determine whether to save the cell search result information in an Acq DB of a second SIM card of the two SIM cards again or not save the cell search result information in the Acq DB of the second SIM card again according to a comparison relationship of the two SIM cards belonging to respective operators and the camping success or failure information.

[0009] It can be seen that the two SIM cards perform network searching and registration processes independently, and store cell search result information searched by the two SIM cards in respective Acq DBs. However, the two Acq DBs are two independent files, and the information stored in the two Acq DBs has poor correlation. Therefore, the application considers that the information can be shared between the two Acq DBs.

[0010] To this end, in order to share the information, when the application obtains cell search result information of a SIM card (i.e., a first SIM card) of the two SIM cards, it needs to determine whether the cell search result information needs to be saved in an Acq DB of another SIM card (i.e., a second SIM card) again, so as to realize cooperative work of the two SIM cards, improve work efficiency of the two SIM cards, and improve network work performance of a terminal device of the two SIM cards.

[0011] Meanwhile, in order to realize the determination, the application introduces a comparison relationship of the two SIM cards belonging to respective operators and camping success or failure information. The comparison relationship can represent whether the two SIM cards belong to the same operator or different operators. The camping success or failure information can indicate whether a cell corresponding to a target frequency scanned by the first SIM card is camping successfully or camping unsuccessfully, so as to easily realize the determination according to the comparison relationship and the camping success or failure information.

[0012] In a second aspect, a dual-card cooperative work apparatus of the application is applied to a terminal device having two SIM cards. The apparatus includes:

[0013] An obtaining unit is configured to obtain cell search result information of a first SIM card of the two SIM cards. The cell search result information includes a target frequency, camping success or failure information of a cell corresponding to the target frequency, and the camping success or failure information is used to indicate that the cell corresponding to the target frequency is camping successfully or the cell corresponding to the target frequency is camping unsuccessfully.

[0014] The cooperation unit is configured to save the cell search result information in the acquisition database (AcqDB) of the first SIM card, and determine whether to save the cell search result information in the AcqDB of the second SIM card of the two SIM cards according to the comparison relationship of the two SIM cards belonging to the respective operators and the information of whether the camping is successful or not.

[0015] In a third aspect, a terminal device is provided. The terminal device includes a processor, a memory, and a computer program or instructions stored in the memory. The processor executes the computer program or instructions to implement the steps in the method of the first aspect.

[0016] In a fourth aspect, a chip is provided. The chip includes a processor and a communication interface. The processor executes the steps in the method of the first aspect.

[0017] In a fifth aspect, a chip module is provided. The chip module includes a transceiver assembly and a chip. The chip includes a processor. The processor executes the steps in the method of the first aspect.

[0018] In a sixth aspect, a computer readable storage medium is provided. The computer readable storage medium stores a computer program or instructions. The computer program or instructions, when executed, implement the steps in the method of the first aspect. For example, the computer program or instructions are executed by a processor.

[0019] In a seventh aspect, a computer program product is provided. The computer program product includes a computer program or instructions. The computer program or instructions, when executed, implement the steps in the method of the first aspect. For example, the computer program or instructions are executed by a processor.

[0020] The technical effects brought by the technical solutions of the second aspect to the seventh aspect can be referred to the technical effects brought by the technical solutions of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced.

[0022] Figure 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

[0023] Figure 2 is a flowchart of a dual-card cooperation method according to an embodiment of the present application;

[0024] Figure 3is a functional unit composition block diagram of a dual-card cooperative work device according to an embodiment of the present application;

[0025] Figure 4 is a structural schematic diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] It should be understood that the terms "first", "second" and the like in the embodiments of the present application are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, software, product or device including a series of steps or units is not limited to the steps or units listed, but also includes steps or units not listed, or further includes other steps or units inherent to the process, method, product or device.

[0027] "Embodiments" referred to in the embodiments of the present application mean that the specific features, structures or properties described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] "and / or" in the embodiments of the present application describes the association relationship of the associated objects, which means that there can be three relationships. For example, A and / or B can represent the following three cases: A exists alone; A and B exist simultaneously; B exists alone. Wherein, A, B can be singular or plural.

[0029] In the embodiments of the present application, the symbol " / " can represent the relationship of "or" between the associated objects. In addition, the symbol " / " can also represent the division sign, that is, to perform division operation. For example, A / B can represent A divided by B.

[0030] "at least one" or similar expressions in the embodiments of the present application means any combination of these items, including any combination of single item or multiple items, means one or more, and multiple means two or more. For example, at least one of a, b or c can represent the following seven cases: a, b, c, a and b, a and c, b and c, a, b and c. Wherein, each of a, b, c can be an element or a set containing one or more elements.

[0031] The "of", "corresponding / relevant", "corresponding", "indicated" in the embodiments of the present application can be used interchangeably at times. It should be pointed out that when the distinction is not emphasized, the meanings expressed are consistent.

[0032] The "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection to realize communication between devices, and no limitation is made thereto.

[0033] The "network" in the embodiments of the present application can be expressed as the same concept as "system", and the communication system is the communication network.

[0034] The "belongs to" in the embodiments of the present application can be expressed as the same concept as "has", "corresponds to", "is associated with" or "is mapped to".

[0035] The related content, concepts, meanings, technical problems, technical solutions and beneficial effects involved in the embodiments of the present application will be described below.

[0036] I. Communication system, terminal device and network device

[0037] 1. Communication system

[0038] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolved system of NR system, LTE-based Access to Unlicensed Spectrum (LTE-U) system, NR-based Access to Unlicensed Spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wi-Fi), 6th-Generation (6G) communication system or other communication systems, etc.

[0039] It should be noted that the number of connections supported by the conventional communication system is limited and easy to implement. However, with the development of communication technology, the communication system can not only support the conventional communication system, but also support device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, vehicle to everything (V2X) communication, narrow band internet of things (NB-IoT) communication, and the like. Therefore, the technical solutions of the embodiments of the present application can also be applied to the above communication systems.

[0040] In addition, the technical solutions of the embodiments of the present application can be applied to beamforming, carrier aggregation (CA), dual connectivity (DC), standalone (SA) deployment scenarios, non-standalone (NSA) deployment scenarios, and the like.

[0041] In the embodiments of the present application, the frequency spectrum used for communication between the terminal device and the network device, or the frequency spectrum used for communication between the terminal device and the terminal device can be a licensed frequency spectrum or an unlicensed frequency spectrum, and no limitation is made on this. In addition, the unlicensed frequency spectrum can be understood as a shared frequency spectrum, and the licensed frequency spectrum can be understood as a non-shared frequency spectrum.

[0042] Since the embodiments of the present application describe various embodiments in combination with terminal devices and network devices, the terminal devices and network devices involved will be described in detail below.

[0043] 2. Terminal device

[0044] The terminal device can be a device with transceiving function, and can also be referred to as a terminal, user equipment (UE), remote terminal device (remote UE), relay device (relay UE), access terminal device, user unit, user station, mobile station, mobile station, remote station, mobile device, user terminal device, smart terminal device, wireless communication device, user agent or user equipment. It should be noted that the relay device is a terminal device that can provide relay forwarding services for other terminal devices (including remote terminal devices).

[0045] For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned automatic driving, a wireless terminal device in remote medical treatment, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc.

[0046] For another example, the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system (such as an NR communication system or a 6G communication system), or a terminal device in a future evolved public land mobile network (PLMN), etc., without specific limitation.

[0047] In some possible implementations, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable, or in-vehicle; can be deployed on water (such as a ship, etc.); can be deployed in the air (such as an airplane, a balloon, and a satellite, etc.).

[0048] In some possible implementations, the terminal device can include a device with wireless communication function, such as a chip system, a chip, or a chip module. For example, the chip system can include a chip, and can also include other discrete devices.

[0049] 3、Network device

[0050] The network device can be a device with transceiver function, used for communication with the terminal device.

[0051] In some possible implementations, the network device can be responsible for radio resource management (RRM) on the air interface side, quality of service (QoS) management, data compression and encryption, data transmission, and the like.

[0052] In some possible implementations, the network device can be a base station (BS) in a communication system or a device deployed in a radio access network (RAN) for providing wireless communication functions.

[0053] For example, the network device can be an evolved node B (eNB or eNodeB) in an LTE communication system, a next generation evolved node B (ng-eNB) in an NR communication system, a next generation node B (gNB) in an NR communication system, a master node (MN) in a dual connectivity architecture, a secondary node (SN) in a dual connectivity architecture, and the like, without specific limitation.

[0054] In some possible implementations, the network device can also be a device in a core network (CN), such as an access and mobility management function (AMF), a user plane function (UPF), and the like; an access point (AP) in a WLAN, a relay station, a communication device in a future evolved PLMN network, a communication device in an NTN network, and the like.

[0055] In some possible implementations, the network device can include a chip system, a chip, or a chip module having a device for providing wireless communication functions for a terminal device. For example, the chip system can include a chip, or can include other discrete devices.

[0056] In some possible implementations, the network device can communicate with an Internet Protocol (IP) network. For example, the Internet, a private IP network, or other data networks, and the like.

[0057] In some possible implementation, the network device can be one standalone node to implement the functions of the above-mentioned base station, or the network device can include two or more standalone nodes to implement the functions of the above-mentioned base station. For example, the network device includes a centralized unit (CU) and a distributed unit (DU), such as gNB-CU and gNB-DU. Further, in some other embodiments of the present application, the network device can further include an active antenna unit (AAU). Among them, the CU implements part of the functions of the network device, and the DU implements another part of the functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer. The DU is responsible for processing the physical layer protocol and real-time services, and implements the functions of the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer. In addition, the AAU can implement part of the physical layer processing function, the radio frequency processing, and the related function of the active antenna. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, in this network deployment, the high-layer signaling (such as RRC signaling) can be considered as generated by the CU and transmitted by the DU, or transmitted by the DU and the AAU together. It can be understood that the network device can include at least one of the CU, the DU, and the AAU. In addition, the CU can be divided into a network device in the RAN, or the CU can also be divided into a network device in the core network, and no specific limitation is made to this.

[0058] In some possible implementation, the network device can have a mobile characteristic, for example, the network device can be a mobile device. Alternatively, the network device can be a satellite, a balloon station. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Alternatively, the network device can also be a base station arranged at a position on land, water, etc.

[0059] In some possible implementations, a network device can serve a cell, and a terminal device in the cell can communicate with the network device through a transmission resource (such as a frequency spectrum resource). The cell can be a macro cell, a small cell, a metro cell, a micro cell, a pico cell, a femto cell, or the like.

[0060] 4. Illustration

[0061] The following describes a communication system of an embodiment of the present application by way of example.

[0062] By way of example, a network architecture of a communication system of an embodiment of the present application is shown in FIG. 1. The communication system 10 can include a network device 110 and a terminal device 120. Figure 1

[0063] Figure 1 The foregoing is merely an example of a network architecture of a communication system, and the network architecture of the communication system of the embodiment of the present application is not limited thereto. For example, the communication system 10 can further include a server or other devices. For another example, the communication system 10 can include multiple network devices and / or multiple terminal devices.

[0064] II. A dual-card cooperative working method

[0065] 1. Description

[0066] In order to improve the working efficiency of the dual card and improve the network working performance of the dual-card terminal device, a dual-card cooperative working method is provided, as shown in FIG. 2, which can include the following steps. Figure 2

[0067] S210, acquiring cell search result information of a first SIM card of the two SIM cards, the cell search result information including a target frequency point, and success or failure information of cell camping corresponding to the target frequency point, the success or failure information being used to indicate success or failure of cell camping corresponding to the target frequency point.

[0068] S220, saving the cell search result information in an acquisition database (Acq DB) of the first SIM card, and determining whether to save the cell search result information in an Acq DB of a second SIM card of the two SIM cards according to a comparison relationship of the two SIM cards belonging to different operators and the success or failure information.​​

[0069] It can be seen that the two SIM cards perform the procedures of searching and registering independently, and store the cell search result information searched by each SIM card in the respective Acq DB. However, the two Acq DBs are two independent files, and the information stored in each Acq DB has poor correlation. Therefore, the application considers that the information can be shared between the two Acq DBs.

[0070] To this end, in order to share the information, when the cell search result information of a SIM card (i.e., the first SIM card) of the two SIM cards is acquired, it is necessary to determine whether the cell search result information needs to be further stored in the Acq DB of another SIM card (i.e., the second SIM card), so as to realize the cooperative work of the two SIM cards, improve the work efficiency of the two SIM cards, and improve the network work performance of the terminal device.

[0071] Meanwhile, in order to realize the determination, the application introduces the comparison relationship of the respective operators to which the two SIM cards belong and the information of whether the camping is successful or not. The comparison relationship can represent whether the respective operators to which the two SIM cards belong are the same or different. The information of whether the camping is successful or not can indicate whether the cell corresponding to the target frequency point scanned by the first SIM card is camping successfully or unsuccessfully, so as to easily realize the determination according to the comparison relationship and the information of whether the camping is successful or not.

[0072] The technical solutions, beneficial effects, concepts and the like involved in the embodiments of the application are described in detail below.

[0073] 2. Detailed description

[0074] 1) The first SIM card and the second SIM card

[0075] In order to facilitate distinction and description, the embodiments of the application introduce the first SIM card and the second SIM card. The first SIM card can refer to one of the two SIM cards possessed by the terminal device, and the second SIM card can refer to the other of the two SIM cards possessed by the terminal device.

[0076] In some possible implementations, the first SIM card can be the primary SIM card of the two SIM cards, and the second SIM card can be the secondary SIM card of the two SIM cards.

[0077] It should be noted that the primary SIM card and the secondary SIM card usually have different service capabilities / communication capabilities, such as the service capabilities / communication capabilities supported by the primary SIM card are higher than the service capabilities / communication capabilities supported by the secondary SIM card. Therefore, the first SIM card and the second SIM card can have different service capabilities / communication capabilities.

[0078] In some possible implementations, the operator to which the first SIM card belongs can be the same as or different from the operator to which the second SIM card belongs.

[0079] 2) Cell search result information of the first SIM card

[0080] It should be noted that in the network searching and registration process of the terminal device, the first SIM card and the second SIM card can each perform the processes of PLMN selection, frequency sweeping, cell search, cell selection, and cell camping.

[0081] Taking the first SIM card as an example, the first SIM card can perform system scanning and bandwidth scanning. At this time, the first SIM card sweeps to a certain frequency point (for ease of description, the frequency point is referred to as a "target frequency point"), and the signal strength on the target frequency point meets a certain threshold condition.

[0082] Then, the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) and the like are searched for and parsed in the cell corresponding to the target frequency point, so as to identify and synchronize downlink of the cell corresponding to the target frequency point, so as to receive system information broadcast by the cell. The system information includes the master information block (MIB) and the system information block (SIB).

[0083] Finally, the terminal device performs cell selection and camping. When the cell corresponding to the target frequency point meets the S criterion and the like, it indicates that the cell corresponding to the target frequency point is successfully camped; otherwise, the cell corresponding to the target frequency point fails to be camped.

[0084] In summary, the cell search result information of the first SIM card can include the target frequency point, and the camping success or failure information of the cell corresponding to the target frequency point, which is used to indicate that the cell corresponding to the target frequency point is successfully camped or the cell corresponding to the target frequency point fails to be camped.

[0085] It should be noted that the cell camping success can also be referred to as "Acq success", and the cell camping failure can also be referred to as "Acq success".

[0086] 3) Acq DB

[0087] It should be noted that the cell search result information of the first SIM card is separately saved in the Acq DB of the first SIM card. Among them, the Acq DB is a specific database file in the NV memory of the terminal device, which can be used to store the wireless communication parameters and configuration information of the terminal device, etc. In this way, by reading the Acq DB, the terminal device can obtain the reliable frequency point information known, and try to connect these frequency points first next time, so as to improve the connection speed and success rate of the network.

[0088] In some possible implementations, the Acq DB can contain at least one of the following information:

[0089] ◆Radio frequency parameters: including frequency, bandwidth, power, and other radio frequency related configuration information.

[0090] ◆Cell information: including cell ID (Cell ID), physical cell identification code (PCI), location area code (LAC), and other identification and configuration information related to a specific cell.

[0091] ◆Antenna configuration: including antenna number, type, polarization, and other parameter configuration information.

[0092] ◆Adjacent cell list: storing the relevant information of other cells adjacent to the current cell, such as the cell ID, frequency, etc.

[0093] ◆Operator configuration: including operator identification, PLMN (Public Land Mobile Network) configuration, priority setting, and other information.

[0094] ◆System information: storing configuration information related to the system (such as LTE, NR, etc.) in which the device is located, such as network type, mode parameters, etc.

[0095] ◆Access parameters: including access point name (APN), access protocol configuration, and other parameters for establishing data connection.

[0096] ◆Security settings: involving security authentication and encryption configuration information between the device and the network.

[0097] ◆Storage configuration: may store the storage capacity, data storage path, and other related configuration information of the device.

[0098] Generally, different SIM cards correspond to different Acq DBs. Among them, the Acq DB of the first SIM card and the Acq DB of the second SIM card are two independent files, and the information stored in each has poor correlation.

[0099] 4) Sharing information between two Acq DBs

[0100] a) Description

[0101] In order to avoid the Acq DB of the first SIM card and the Acq DB of the second SIM card having poor correlation between the respective stored information, the application considers that information can be shared between the two Acq DBs.

[0102] To this end, in order to be able to share information with each other, the application needs to decide whether the cell search result information of the first SIM card still needs to be saved in the Acq DB of the second SIM card when the cell search result information of the first SIM card is obtained, so as to realize the cooperative work of the dual cards, improve the working efficiency of the dual cards, and improve the network working performance of the dual card terminal device. Finally, the application can realize the decision according to the comparison relationship of the respective operators to which the two SIM cards belong and the information of whether the camping is successful.

[0103] The comparison relationship can represent whether the respective operators to which the two SIM cards belong are the same or different. Generally, the terminal device will know the operator to which the first SIM card belongs and the operator to which the second SIM card belongs. In this way, the terminal device can determine whether the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs.

[0104] b) How to realize the decision according to the comparison relationship and the information of whether the camping is successful

[0105] Since the comparison relationship represents two different results, and the information of whether the camping is successful also indicates two different results, the final decision will be different, so the application will be described below in multiple cases in order to adapt to different scenarios and improve the diversity and flexibility of the cooperative work of the dual cards discussed in the application.

[0106] Case 1:

[0107] In "Case 1", the comparison relationship can represent that the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the information of whether the camping is successful can indicate that the camping in the cell corresponding to the target frequency point is successful.

[0108] In specific implementation, according to the comparison relationship of the respective operators to which the two SIM cards belong and the information of whether the camping is successful, it is determined whether the cell search result information is saved in the Acq DB of the second SIM card or not, which can include:

[0109] If the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the information of whether the camping is successful indicates that the camping in the cell corresponding to the target frequency point is successful, the cell search result information is saved in the Acq DB of the second SIM card.

[0110] It should be noted that, since the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, the first SIM card and the second SIM card can sweep the same frequency point. In this way, in the case that the first SIM card has swept the target frequency point, the second SIM card can still sweep the target frequency point. Since the first SIM card can successfully camp on the cell corresponding to the target frequency point, the second SIM card has a great probability of also successfully camping on the cell corresponding to the target frequency point.

[0111] Based on this, the application can further save the cell search result information of the first SIM card in the AcqDB of the second SIM card. In this way, the AcqDB of the second SIM card stores the target frequency point, so that the second SIM card can preferentially sweep the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible.

[0112] It can be seen that, by sharing information between the two AcqDBs, it is beneficial to realize cooperative work of the dual-card, improve the work efficiency of the dual-card, and improve the network work performance of the dual-card terminal device.

[0113] Case 2:

[0114] In "Case 2", the comparison relationship can represent that the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the camping success or failure information can indicate that the cell corresponding to the target frequency point fails to camp.

[0115] In specific implementation, according to the comparison relationship of the respective operators of the two SIM cards and the camping success or failure information, it is determined whether to further save the cell search result information in the AcqDB of the second SIM card or not to further save the cell search result information in the AcqDB of the second SIM card, which can include:

[0116] If the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the camping success or failure information indicates that the cell corresponding to the target frequency point fails to camp, the cell search result information is not further saved in the AcqDB of the second SIM card.

[0117] It should be noted that, since the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, the first SIM card and the second SIM card can sweep the same frequency point. In this way, in the case that the first SIM card has swept the target frequency point, the second SIM card can still sweep the target frequency point. Since the first SIM card can fail to camp on the cell corresponding to the target frequency point, the second SIM card has a great probability of also failing to camp on the cell corresponding to the target frequency point.

[0118] Based on this, the first SIM card can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude scanning the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible.

[0119] It can be seen that by sharing information between the two Acq DBs, the dual-card cooperative work is facilitated, the dual-card work efficiency is improved, and the network work performance of the dual-card terminal device is improved.

[0120] In addition, since the second SIM card has a great probability of failing to camp on the cell corresponding to the target frequency point, if the Acq DB of the second SIM card has a record about the target frequency point, the target frequency point can be deleted from the Acq DB of the second SIM card.

[0121] In this way, by deleting the target frequency point, the second SIM card no longer scans the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible.

[0122] Case 3:

[0123]

Description

[0124] In "Case 3", the comparison relationship can represent that the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, and the camping success or failure information can indicate that the cell corresponding to the target frequency point is successfully camped.

[0125] In specific implementation, according to the comparison relationship of the respective operators of the two SIM cards and the camping success or failure information, it is determined whether the cell search result information is saved in the Acq DB of the second SIM card or not saved in the Acq DB of the second SIM card, which can include:

[0126] If the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, and the camping success or failure information indicates that the cell corresponding to the target frequency point is successfully camped, according to the shared use state of the operator to which the second SIM card belongs to the cell corresponding to the target frequency point, it is determined whether the cell search result information is saved in the Acq DB of the second SIM card or not saved in the Acq DB of the second SIM card.

[0127] It should be noted that although the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, the frequency bands used by the operator to which the first SIM card belongs and the frequency bands used by the operator to which the second SIM card belong can partially overlap, and the operator to which the first SIM card belongs and the operator to which the second SIM card can share the same cell.

[0128] In addition, since the camping success information indicates that the cell corresponding to the target frequency point is camped successfully, the second SIM card can also camp successfully in the cell corresponding to the target frequency point.

[0129] Based on this, the application introduces a shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs. The shared use state can represent whether the operator to which the second SIM card belongs can share the use of the cell corresponding to the target frequency point or cannot share the use of the cell corresponding to the target frequency point.

[0130] In this way, the application can determine whether to save the cell search result information in the Acq DB of the second SIM card again according to the shared use state, so as to realize the cooperative work of the dual-card, improve the work efficiency of the dual-card, and improve the network work performance of the dual-card terminal device.

[0131]

Shared use state

[0132] Since the frequency bands used by the operator to which the first SIM card belongs and the frequency bands used by the operator to which the second SIM card belong can partially overlap, the application can determine whether the operator to which the second SIM card belongs can share the use of the cell corresponding to the target frequency point according to whether the target frequency point is in the overlapping frequency band. That is, whether the operator to which the second SIM card belongs can use the target frequency point is determined.

[0133] In some possible implementations, if the target frequency point is in the frequency band that can be used by the operator to which the second SIM card belongs, the operator to which the second SIM card can share the use of the cell corresponding to the target frequency point.

[0134] It can be understood that if the operator to which the second SIM card can use the target frequency point, it means that the operator to which the second SIM card can share the use of the cell corresponding to the target frequency point.

[0135] In some possible implementations, if the target frequency point is not in the frequency band that can be used by the operator to which the second SIM card belongs, the operator to which the second SIM card cannot share the use of the cell corresponding to the target frequency point.

[0136] It can be understood that if the operator to which the second SIM card cannot use the target frequency point, it means that the operator to which the second SIM card cannot share the use of the cell corresponding to the target frequency point.

[0137] In summary, according to the sharing use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs, it is determined whether to save the cell search result information in the Acq DB of the second SIM card again or not, which can include:

[0138] If the cell corresponding to the target frequency point can be shared and used by the operator to which the second SIM card belongs, the cell search result information is saved in the Acq DB of the second SIM card again.

[0139] If the cell corresponding to the target frequency point cannot be shared and used by the operator to which the second SIM card belongs, the cell search result information is not saved in the Acq DB of the second SIM card again.

[0140] It should be noted that if the cell corresponding to the target frequency point can be shared and used by the operator to which the second SIM card belongs, it means that the operator to which the second SIM card belongs can use the target frequency point. At this time, since the camping success or failure information indicates that the cell corresponding to the target frequency point is camped successfully, the second SIM card has a high probability of camping successfully in the cell corresponding to the target frequency point.

[0141] Based on this, the application can save the cell search result information of the first SIM card in the Acq DB of the second SIM card again. In this way, the Acq DB of the second SIM card stores the target frequency point, so that the second SIM card can preferentially sweep the target frequency point when performing network searching and registration, so as to complete the network searching and registration as soon as possible, thereby facilitating the implementation of dual-card cooperative work, improving the dual-card working efficiency, and improving the network working performance of the dual-card terminal device.

[0142] If the cell corresponding to the target frequency point cannot be shared and used by the operator to which the second SIM card belongs, it means that the operator to which the second SIM card belongs cannot use the target frequency point.

[0143] Based on this, the application can not save the cell search result information of the first SIM card in the Acq DB of the second SIM card again. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can preferentially exclude sweeping the target frequency point when performing network searching and registration, so as to complete the network searching and registration as soon as possible, thereby facilitating the implementation of dual-card cooperative work, improving the dual-card working efficiency, and improving the network working performance of the dual-card terminal device.

[0144] Case 4:

[0145] In "Case 4", the comparison relationship can represent that the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, and the camping success or failure information can indicate that the cell corresponding to the target frequency point is camped unsuccessfully.

[0146] In a specific implementation, whether to save the cell search result information in the Acq DB of the second SIM card again or not can be determined according to the comparison relationship between the two SIM cards and the camping success or failure information, and can include:

[0147] If the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, and the camping success or failure information indicates that the cell corresponding to the target frequency point fails to camp, whether to save the cell search result information in the Acq DB of the second SIM card again or not can be determined according to the shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs.

[0148] It should be noted that since the first SIM card can fail to camp in the cell corresponding to the target frequency point, the second SIM card has a high probability of also failing to camp in the cell corresponding to the target frequency point.

[0149] Based on this, the application can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude the target frequency point from the frequency scanning when performing network searching and registration, so as to complete the network searching and registration as soon as possible, which is beneficial to realize the cooperative work of the dual cards, improve the work efficiency of the dual cards, and improve the network work performance of the dual card terminal device.

[0150] 5) Uplink Trasmit Switching (UL Tx Switching)

[0151] [Description]

[0152] It should be noted that when the first SIM card and the second SIM card both complete the network searching and registration processes and the subsequent random access process, the first SIM card and the second SIM card will both successfully access the cells corresponding to them, perform the RRC connection state, and perform normal communication on the cells corresponding to them. At this time, in the normal communication, the first SIM card and the second SIM card can perform relevant uplink transmission in addition to relevant downlink transmission.

[0153] In order to realize the uplink transmission, considering factors such as antenna design complexity and transmission power limitation, the current dual card terminal device at most supports two transmission antennas, that is, at most supports two transmission channels (2Tx). Therefore, the first SIM card and the second SIM card need to occupy certain transmission channels to perform uplink transmission. The transmission channel can also be understood as a transmission antenna or a transmission unit, and no specific limitation is made thereto.

[0154] In addition, in order to realize uplink enhancement, uplink transmission switching is introduced in current uplink transmission, so that the terminal device fully utilizes uplink resources through uplink transmission switching, and improves uplink coverage and uplink throughput.

[0155] Based on this, in order to introduce uplink transmission switching in the uplink transmission of the dual card, the present application considers that, in the case that the first SIM card and the second SIM card have both successfully accessed respective cells and the communication is normal, the first SIM card performs uplink transmission by performing uplink transmission switching in a time-division manner on the FDD (Frequency Division Duplexing) uplink carrier and the TDD (Time Division Duplexing) uplink carrier, and controls the second SIM card to perform uplink transmission by not performing uplink transmission switching.

[0156] That is, the first SIM card supports uplink transmission switching, while the second SIM card does not support uplink transmission switching, so that the first SIM card can multiplex the FDD uplink carrier and the TDD uplink carrier in a time-division manner, and perform carrier switching between the FDD uplink carrier and the TDD uplink carrier.

[0157] In this way, by letting one SIM card support uplink transmission switching and letting the other SIM card not support uplink transmission switching in the uplink transmission of the dual card, it is beneficial to ensure that uplink transmission switching is realized in the uplink transmission of the dual card, and to avoid increasing communication complexity due to both SIM cards supporting uplink transmission switching.

[0158]

FDD uplink carrier and TDD uplink carrier

[0159] It should be noted that the FDD uplink carrier can also be referred to as a "low-frequency uplink carrier", and the TDD uplink carrier can also be referred to as a "high-frequency uplink carrier", and no specific limitation is made in this regard.

[0160] Since TDD carriers are generally in the high-frequency band, such as N78 at 3.5 GHz and N79 at 4.9 GHz, while FDD carriers are usually in the low-frequency band, the coverage range of TDD carriers is much smaller than that of FDD carriers.

[0161] In some possible implementations, multiplexing the FDD uplink carrier and the TDD uplink carrier in a time-division manner can include one of the following:

[0162] FDD uplink carriers and TDD uplink carriers aggregated by Inter-Band CA in a time-division manner, FDD uplink carriers and TDD uplink carriers aggregated by E-UTRAN New Radio Dual Connectivity (EN-DC) in a time-division manner, and FDD uplink carriers and TDD uplink carriers aggregated by New Radio Dual Connectivity (NR-DC) in a time-division manner.

[0163] The specific description is as follows.

[0164] ◆ Inter-Band CA

[0165] It should be noted that, since the Inter-Band CA can be applied to an area covered by multiple wireless carriers of different frequency bands at the same time, when the electronic device is in the area, the first SIM card can multiplex FDD uplink carriers and TDD uplink carriers aggregated by Inter-Band CA in a time-division manner.

[0166] For the FDD uplink carriers and the TDD uplink carriers aggregated by Inter-Band CA, it can be understood that the FDD uplink carriers and the TDD uplink carriers are respectively on different frequency bands, such as the FDD uplink carriers on low frequency and the TDD uplink carriers on high frequency, and the FDD uplink carriers and the TDD uplink carriers are aggregated by carriers.

[0167] ◆ EN-DC

[0168] It should be noted that the EN-DC belongs to Non-Standalone (NAS), which can be a terminal device simultaneously connected to an NR communication system (such as a cell of a 5G network) and an LTE communication system (such as a cell of a 4G network), so that the operator can simultaneously use the wireless resources of the two network technologies.

[0169] For the FDD uplink carriers and the TDD uplink carriers of the EN-DC, it can be understood that the FDD uplink carriers and the TDD uplink carriers are under the dual connection between the NR communication system and the LTE communication system.

[0170] For example, the FDD uplink carriers are under the NR communication system, and the TDD uplink carriers are under the LTE communication system; or the FDD uplink carriers are under the LTE communication system, and the TDD uplink carriers are under the NR communication system.

[0171] ◆ NR-DC

[0172] It should be noted that the NR-DC belongs to the standalone networking (Standalone, AS), and the terminal device can be connected to one NR communication system (such as a cell of a 5G network) and another NR communication system (such as a cell of a 5G network) at the same time, and one NR communication system uses a Sub6G frequency band as a master node and a flow control point, and the other NR communication system uses a millimeter wave frequency band as a secondary node.

[0173] For the FDD uplink carrier and the TDD uplink carrier of the NR-DC, it can be understood as the FDD uplink carrier and the TDD uplink carrier under the dual connectivity between one NR communication system and another NR communication system.

[0174] For example, the FDD uplink carrier is in the Sub6G frequency band, and the TDD uplink carrier is in the millimeter wave frequency band; or the FDD uplink carrier is in the millimeter wave frequency band, and the TDD uplink carrier is in the Sub6G frequency band.

[0175]

TDD time slot

[0176] It should be noted that in the time domain, the terminal device can perform corresponding uplink and downlink transmission in the scheduled or configured TDD time slot.

[0177] The TDD time slot can include one of the following: a TDD uplink time slot, a TDD downlink time slot, and a TDD special time slot.

[0178] The TDD uplink time slot can be understood as a time slot for TDD uplink transmission. At this time, the terminal device can perform uplink transmission through the TDD uplink carrier in the TDD uplink time slot.

[0179] The TDD downlink time slot can be understood as a time slot for TDD downlink transmission. At this time, the terminal device can perform downlink transmission through the TDD downlink carrier in the TDD downlink time slot.

[0180] The TDD special time slot can be understood as a time slot for control information transmission. At this time, the terminal device can send or receive related control information in the TDD special time slot.

[0181] Specifically, the TDD special time slot can include three special time slots, namely, a downlink pilot time slot (Downlink Pilot Time Slot, DwPTS), a guard interval (Guard Period, GP), and an uplink pilot time slot (Uplink Pilot Time Slot, UpPTS).

[0182]

How to perform uplink transmission

[0183] In some possible implementations, the control of the first SIM card to perform uplink transmission by performing uplink transmission switching on the FDD uplink carrier and the TDD uplink carrier in a time-division manner, and the control of the second SIM card to perform uplink transmission without performing uplink transmission switching, include:

[0184] On the TDD uplink time slot, the control of the first SIM card to perform uplink MIMO transmission on the TDD uplink carrier, and the control of the second SIM card to not perform uplink transmission on the TDD uplink carrier and the FDD uplink carrier;

[0185] On the TDD downlink time slot and the TDD special time slot, the control of the first SIM card to perform uplink SISO transmission on the FDD uplink carrier, and the control of the second SIM card to perform uplink SISO transmission on the FDD uplink carrier.

[0186] It should be noted that, since the first SIM card supports uplink transmission switching, the first SIM card can multiplex the FDD uplink carrier and the TDD uplink carrier in a time-division manner, so that the first SIM can perform carrier switching.

[0187] When on the TDD uplink time slot, since the first SIM card can switch from the FDD uplink carrier to the TDD uplink carrier and use the TDD uplink carrier to perform uplink transmission, the embodiment of the present application can allocate all transmission channels to the first SIM card for use, so that the first SIM card can occupy all transmission channels to perform uplink MIMO transmission, and the second SIM card does not perform uplink transmission because it does not occupy transmission channels. In this way, uplink MIMO transmission is not only conducive to improving the utilization efficiency of transmission channels, but also conducive to preferentially ensuring that the first SIM card can fully utilize uplink resources and improve uplink coverage and uplink throughput. In particular, when the first SIM card is a primary SIM card.

[0188] When on a TDD downlink time slot or a TDD special time slot, although the first SIM card supports uplink transmission switching, the first SIM card cannot use the TDD uplink carrier for uplink transmission, but can only use the FDD uplink carrier for uplink transmission. Therefore, the embodiment of the present application can allocate a part of the transmission channels (such as one transmission channel) to the first SIM card for use, and allocate the remaining transmission channels (such as another transmission channel) to the second SIM card for use, so that the first SIM card can occupy a part of the transmission channels for uplink SISO transmission, and the second SIM card can occupy the remaining part of the transmission channels for uplink SISO transmission. In this way, by performing uplink SISO transmission through the two SIM cards, it is beneficial to simultaneously ensure dual-card dual-talking, so as to realize dual-card cooperative work, improve the dual-card work efficiency, and improve the network work performance of the dual-card terminal device.

[0189] III. An example of a dual-card cooperative work apparatus

[0190] 1. Description

[0191] The above mainly introduces the scheme of the embodiment of the present application from the method side. It can be understood that the terminal device includes the hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed in the present text, the present application can be realized in the form of hardware or the combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical scheme. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0192] The embodiment of the present application can divide the functional units of the terminal device according to the above method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated in one processing unit. The integrated unit can be realized in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of the present application is illustrative, and is only a logical functional division, and actual implementation can have another division manner.

[0193] In the case of using an integrated unit, Figure 3 is a functional unit composition diagram of a dual-card cooperative work apparatus of the embodiment of the present application. The dual-card cooperative work apparatus 300 includes an acquisition unit 301 and a cooperative unit 302.

[0194] In some possible implementation, the obtaining unit 301 can be a module unit for processing signals, data, information, etc., and no specific limitation is made in this regard.

[0195] In some possible implementation, the coordinating unit 302 can be a module unit for processing signals, data, information, etc., and no specific limitation is made in this regard.

[0196] In some possible implementation, the dual-card cooperative work apparatus 300 can further include a communication unit. The communication unit can be a communication interface, a transceiver, a transceiving circuit, etc.

[0197] In some possible implementation, the dual-card cooperative work apparatus 300 can further include a storage unit for storing computer program codes or instructions executed by the dual-card cooperative work apparatus 300. The storage unit can be a memory.

[0198] In some possible implementation, the dual-card cooperative work apparatus 300 can be a chip or a chip module.

[0199] In some possible implementation, the obtaining unit 301 and the coordinating unit 302 can be integrated in the same unit, or can be integrated in different units respectively.

[0200] For example, the obtaining unit 301 and the coordinating unit 302 can be integrated in a processing unit.

[0201] It should be noted that the processing unit can be a processor or a controller, for example, a baseband processor, a baseband chip, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processing unit can implement or execute the various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the present application. The processing unit can also be a combination of computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.

[0202] In some possible implementation, the obtaining unit 301 and the coordinating unit 302 are configured to perform any step in the above method embodiments, such as transmitting or receiving data, etc. Details are described below.

[0203] In actual implementation, the acquisition unit 301 and the cooperation unit 302 are configured to perform any step in the above method embodiments, and when performing an action such as sending, other units can be selected to complete the corresponding operation. Details are described below.

[0204] The acquisition unit 301 is configured to acquire cell search result information of a first SIM card in the two SIM cards, the cell search result information including a target frequency point, and information about whether a cell corresponding to the target frequency point is successfully camped or not, the information about whether the cell is successfully camped or not being used to indicate that the cell corresponding to the target frequency point is successfully camped or the cell corresponding to the target frequency point is failed to camp.

[0205] The cooperation unit 302 is configured to save the cell search result information in an acquisition database (Acq DB) of the first SIM card, and determine whether to save the cell search result information in an Acq DB of a second SIM card in the two SIM cards or not save the cell search result information in the Acq DB of the second SIM card according to a comparison relationship of the respective operators to which the two SIM cards belong and the information about whether the cell is successfully camped or not.

[0206] It can be seen that the two SIM cards perform the procedures of searching for a network and registering independently, and store the respective cell search result information in respective Acq DBs, but the two Acq DBs are two independent files, and the information stored in the respective Acq DBs has poor correlation. Therefore, the present application considers that the information can be shared between the two Acq DBs.

[0207] To this end, in order to share the information, when the cell search result information of a certain SIM card (i.e., the first SIM card) in the two SIM cards is acquired, it is necessary to determine whether the cell search result information needs to be saved in an Acq DB of another SIM card (i.e., the second SIM card) or not, so as to realize the cooperative work of the two cards, improve the work efficiency of the two cards, and improve the network work performance of the two-card terminal device.

[0208] Meanwhile, in order to realize the determination, the present application introduces a comparison relationship of the respective operators to which the two SIM cards belong and information about whether the cell is successfully camped or not. The comparison relationship can represent whether the respective operators to which the two SIM cards belong are the same or not, and the information about whether the cell is successfully camped or not can indicate whether the cell corresponding to the target frequency point scanned by the first SIM card is successfully camped or not, so as to easily realize the determination according to the comparison relationship and the information about whether the cell is successfully camped or not.

[0209] It should be noted that, Figure 3 The specific implementation of each operation in the embodiments can be found in the description of the above method embodiments, and will not be repeated here.

[0210] 2. Some possible implementations

[0211] Some possible implementations are described below. Some specific descriptions can be found in the above, and will not be repeated here.

[0212] In some possible implementations, in terms of determining whether to save the cell search result information in the Acq DB of the second SIM card again or not, the cooperation unit 302 is configured to:

[0213] If the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the information about whether the cell is successfully camped indicates that the cell corresponding to the target frequency is successfully camped, the cell search result information is saved in the Acq DB of the second SIM card again.

[0214] If the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the information about whether the cell is successfully camped indicates that the cell corresponding to the target frequency is unsuccessfully camped, the cell search result information is not saved in the Acq DB of the second SIM card again.

[0215] It should be noted that, in combination with the content in the above "Case 1", since the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, the first SIM card and the second SIM card can scan the same frequency. In this way, in the case that the first SIM card has scanned the target frequency, the second SIM card can still scan the target frequency. Since the first SIM card can successfully camp in the cell corresponding to the target frequency, the second SIM card has a high probability of successfully camping in the cell corresponding to the target frequency.

[0216] Based on this, the application can save the cell search result information of the first SIM card in the Acq DB of the second SIM card again. In this way, the Acq DB of the second SIM card stores the target frequency, so that the second SIM card can preferentially scan the target frequency when performing network searching and registration, so as to complete the network searching and registration as soon as possible.

[0217] It can be seen that, by sharing information between the two Acq DBs, it is beneficial to realize the cooperative work of the dual-card, improve the work efficiency of the dual-card, and improve the network work performance of the dual-card terminal device.

[0218] In combination with the above-mentioned content in the "Case 2", since the first SIM card belongs to the same operator as the second SIM card, the first SIM card and the second SIM card can scan the same frequency point. In this way, in the case that the first SIM card has scanned the target frequency point, the second SIM card can still scan the target frequency point. Since the first SIM card fails to camp on the cell corresponding to the target frequency point, the second SIM card has a high probability of failing to camp on the cell corresponding to the target frequency point.

[0219] Based on this, the present application can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude scanning the target frequency point when performing network searching and registration, so as to complete the network searching and registration as soon as possible.

[0220] It can be seen that, by sharing information between the two Acq DBs, it is beneficial to realize the cooperative work of the dual-card, improve the work efficiency of the dual-card, and improve the network work performance of the dual-card terminal device.

[0221] In some possible implementations, after no longer saving the cell search result information in the Acq DB of the second SIM card, the dual-card cooperative work apparatus 300 further includes:

[0222] The deletion unit is configured to delete the target frequency point from the Acq DB of the second SIM card if the Acq DB of the second SIM card has a record about the target frequency point.

[0223] It should be noted that, in combination with the above-mentioned content in the "Case 2", since the second SIM card has a high probability of failing to camp on the cell corresponding to the target frequency point, if the Acq DB of the second SIM card has a record about the target frequency point, the target frequency point can be deleted from the Acq DB of the second SIM card.

[0224] In this way, by deleting the target frequency point, the second SIM card no longer scans the target frequency point when performing network searching and registration, so as to complete the network searching and registration as soon as possible.

[0225] In some possible implementations, in terms of determining whether to save the cell search result information in the Acq DB of the second SIM card of the two SIM cards or no longer save the cell search result information in the Acq DB of the second SIM card according to the comparison relationship of the operators to which the two SIM cards respectively belong and the information about whether the camping is successful, the cooperative unit 302 is configured to:

[0226] If the first SIM card belongs to a different operator than the second SIM card, and the camp-on success or failure information indicates that the cell corresponding to the target frequency point camped on successfully, then whether to save the cell search result information in the Acq DB of the second SIM card again or not is determined according to the shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs.

[0227] If the first SIM card belongs to a different operator than the second SIM card, and the camp-on success or failure information indicates that the cell corresponding to the target frequency point camped on unsuccessfully, then the cell search result information is not saved in the Acq DB of the second SIM card again.

[0228] It should be noted that, in combination with the content in the above-mentioned "Case 3", although the first SIM card belongs to a different operator than the second SIM card, the frequency band used by the operator to which the first SIM card belongs and the frequency band used by the operator to which the second SIM card belongs can partially overlap, and the operator to which the first SIM card belongs and the operator to which the second SIM card can share the use of the same cell.

[0229] In addition, since the camp-on success or failure information indicates that the cell corresponding to the target frequency point camped on successfully, the second SIM card can also camp on successfully in the cell corresponding to the target frequency point.

[0230] Based on this, the application introduces the shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs. The shared use state can represent whether the operator to which the second SIM card belongs can share the use of the cell corresponding to the target frequency point or not.

[0231] In this way, the application can determine whether to save the cell search result information in the Acq DB of the second SIM card again according to the shared use state, so as to realize the cooperative work of dual cards, improve the work efficiency of dual cards, and improve the network work performance of the dual card terminal device.

[0232] In combination with the content in the above-mentioned "Case 4", since the first SIM card can camp on unsuccessfully in the cell corresponding to the target frequency point, the second SIM card has a great probability of also camping on unsuccessfully in the cell corresponding to the target frequency point.

[0233] Based on this, the application can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude the target frequency point from the frequency priority when performing network searching and registration, so as to complete the network searching and registration as soon as possible, which is beneficial to realize the cooperative work of the dual cards, improve the work efficiency of the dual cards, and improve the network working performance of the dual card terminal device.

[0234] In some possible implementations, in terms of determining whether to save the cell search result information in the Acq DB of the second SIM card or not according to the sharing use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs, the cooperative unit 302 is configured to:

[0235] If the operator to which the second SIM card belongs can share the use of the cell corresponding to the target frequency point, the cell search result information is saved in the Acq DB of the second SIM card again.

[0236] If the operator to which the second SIM card belongs cannot share the use of the cell corresponding to the target frequency point, the cell search result information is no longer saved in the Acq DB of the second SIM card.

[0237] It should be noted that, in combination with the content in the above-mentioned "case 3", if the operator to which the second SIM card belongs can share the use of the cell corresponding to the target frequency point, it means that the operator to which the second SIM card belongs can use the target frequency point. At this time, since the camping success or failure information indicates that the cell corresponding to the target frequency point is camped successfully, the second SIM card has a great probability of camping successfully in the cell corresponding to the target frequency point.

[0238] Based on this, the application can save the cell search result information of the first SIM card in the Acq DB of the second SIM card again. In this way, the Acq DB of the second SIM card will store the target frequency point, so that the second SIM card can scan the target frequency point first when performing network searching and registration, so as to complete the network searching and registration as soon as possible, which is beneficial to realize the cooperative work of the dual cards, improve the work efficiency of the dual cards, and improve the network working performance of the dual card terminal device.

[0239] If the operator to which the second SIM card belongs cannot share the use of the cell corresponding to the target frequency point, it means that the operator to which the second SIM card belongs cannot use the target frequency point.

[0240] Based on this, the first SIM card can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude scanning the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible, thereby facilitating the implementation of dual-card cooperative work, improving the dual-card work efficiency, and improving the network working performance of the dual-card terminal device.

[0241] In some possible implementations, if the target frequency point is in the frequency band that can be used by the operator to which the second SIM card belongs, the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point;

[0242] If the target frequency point is not in the frequency band that can be used by the operator to which the second SIM card belongs, the operator to which the second SIM card belongs cannot share the cell corresponding to the target frequency point.

[0243] It should be noted that, in combination with the content in the above-mentioned "case 3", since the frequency band used by the operator to which the first SIM card belongs and the frequency band used by the operator to which the second SIM card belongs can partially overlap, the present application can determine whether the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point according to whether the target frequency point is in the overlapping frequency band. That is, it is determined whether the operator to which the second SIM card belongs can use the target frequency point.

[0244] In this way, if the operator to which the second SIM card belongs can use the target frequency point, it indicates that the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point. If the operator to which the second SIM card belongs cannot use the target frequency point, it indicates that the operator to which the second SIM card belongs cannot share the cell corresponding to the target frequency point.

[0245] In some possible implementations, the dual-card cooperative work apparatus 300 further includes:

[0246] The control unit is configured to, if the first SIM card and the second SIM card have both successfully accessed respective cells and are in normal communication, control the first SIM card to perform uplink transmission by performing uplink transmission switching on a frequency division duplex, FDD, uplink carrier and a time division duplex, TDD, uplink carrier in a time-division multiplexing manner, and control the second SIM card to perform uplink transmission without performing uplink transmission switching.

[0247] It should be noted that, in combination with the content in the above-mentioned "5) uplink transmission switching", in order to implement uplink enhancement, uplink transmission switching is introduced in current uplink transmission, so that the terminal device can fully utilize uplink resources by using uplink transmission switching, and improve uplink coverage and uplink throughput.

[0248] Based on this, in order to introduce uplink transmission switching in uplink transmission of the dual SIM cards, the present application considers that, in the case that the first SIM card and the second SIM card have both successfully accessed respective cells and communication is normal, the first SIM card performs uplink transmission by performing uplink transmission switching in a time-division multiplexing manner on FDD (Frequency Division Duplexing) uplink carriers and TDD (Time Division Duplexing) uplink carriers, and the second SIM card is controlled to perform uplink transmission by not performing uplink transmission switching.

[0249] That is, the first SIM card supports uplink transmission switching, while the second SIM card does not support uplink transmission switching, so that the first SIM card can multiplex FDD uplink carriers and TDD uplink carriers in a time-division multiplexing manner and perform carrier switching between FDD uplink carriers and TDD uplink carriers.

[0250] In this way, by letting one SIM card support uplink transmission switching and letting the other SIM card not support uplink transmission switching in uplink transmission of the dual SIM cards, it is beneficial to ensure that uplink transmission switching is implemented in uplink transmission of the dual SIM cards and to avoid increasing communication complexity due to both SIM cards supporting uplink transmission switching.

[0251] In some possible implementations, in controlling the first SIM card to perform uplink transmission by performing uplink transmission switching in a time-division multiplexing manner on FDD uplink carriers and TDD uplink carriers, and controlling the second SIM card to perform uplink transmission by not performing uplink transmission switching, the control unit is configured to:

[0252] on the TDD uplink time slot, control the first SIM card to perform uplink MIMO (Multiple Input Multiple Output) transmission on the TDD uplink carrier using all transmission channels, and control the second SIM card to not perform uplink transmission on both the TDD uplink carrier and the FDD uplink carrier;

[0253] on the TDD downlink time slot and the TDD special time slot, control the first SIM card to perform uplink SISO (Single Input Single Output) transmission on the FDD uplink carrier, and control the second SIM card to perform uplink SISO transmission on the FDD uplink carrier.

[0254] It should be noted that, in combination with the content in the above-mentioned “5) uplink transmission switching”, since the first SIM card supports uplink transmission switching, the first SIM card can multiplex FDD uplink carriers and TDD uplink carriers in a time-division multiplexing manner, so that the first SIM card can perform carrier switching.

[0255] When on the TDD uplink time slot, since the first SIM card can switch from the FDD uplink carrier to the TDD uplink carrier and use the TDD uplink carrier to perform uplink transmission, the embodiment of the present application can allocate all the transmission channels to the first SIM card for use, so that the first SIM card can occupy all the transmission channels to perform uplink MIMO transmission, while the second SIM card does not perform uplink transmission because it does not occupy the transmission channels. In this way, uplink MIMO transmission is not only conducive to improving the utilization efficiency of the transmission channels, but also conducive to preferentially ensuring that the first SIM card can fully utilize the uplink resources and improve uplink coverage and uplink throughput. In particular, when the first SIM card is the primary SIM card.

[0256] When on the TDD downlink time slot or the TDD special time slot, although the first SIM card supports uplink transmission switching, the first SIM card cannot use the TDD uplink carrier to perform uplink transmission, but can only use the FDD uplink carrier to perform uplink transmission. Therefore, the embodiment of the present application can allocate a part of the transmission channels (such as one transmission channel) to the first SIM card for use, and allocate the remaining transmission channels (such as another transmission channel) to the second SIM card for use, so that the first SIM card can occupy a part of the transmission channels to perform uplink SISO transmission, and the second SIM card can occupy the remaining part of the transmission channels to perform uplink SISO transmission. In this way, both SIM cards performing uplink SISO transmission is conducive to simultaneously ensuring dual-card dual-communication, so as to realize dual-card cooperative work, improve dual-card work efficiency, and improve the network work performance of the dual-card terminal device.

[0257] Four, an example of a terminal device

[0258] 1. Description

[0259] See Figure 4 , Figure 4 is a structural schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 400 can include a processor 410, a memory 420, and a communication bus for connecting the processor 410 and the memory 420.

[0260] In some possible implementations, the memory 420 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM), which is used to store program codes executed by the terminal device 400 and transmitted data.

[0261] In some possible implementation, the terminal device 400 further includes a communication interface, configured to receive and send data.

[0262] In some possible implementation, the processor 410 can be one or more CPUs, and in the case that the processor 410 is a CPU, the CPU can be a single-core CPU or a multi-core CPU.

[0263] In some possible implementation, the processor 410 can be a baseband chip, a chip, a central processing unit (CPU), a general processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component or any combination thereof.

[0264] In a specific implementation, the processor 410 in the terminal device 400 is configured to execute the computer program or the instruction 421 stored in the memory 420, and perform the following operations:

[0265] obtain cell search result information of a first SIM card in the two SIM cards, the cell search result information including a target frequency point, and information about whether a cell corresponding to the target frequency point is successfully camped or not, the information about whether the cell is successfully camped or not being used to indicate that the cell corresponding to the target frequency point is successfully camped or the cell corresponding to the target frequency point is not successfully camped;

[0266] save the cell search result information in an acquisition database (Acq DB) of the first SIM card, and determine whether to save the cell search result information in an Acq DB of a second SIM card in the two SIM cards or not save the cell search result information in the Acq DB of the second SIM card according to a comparison relationship between the two SIM cards and the information about whether the cell is successfully camped or not.

[0267] It can be seen that the two SIM cards perform the procedures of searching and registering independently, and store the cell search result information searched by each SIM card in the respective Acq DBs, but the two Acq DBs are two independent files, and the information stored in each Acq DB has poor correlation, so the present application considers that the information can be shared between the two Acq DBs.

[0268] To this end, in order to share the information, when the cell search result information of a certain SIM card (i.e., the first SIM card) in the two SIM cards is obtained, it is necessary to determine whether the cell search result information needs to be saved in an Acq DB of another SIM card (i.e., the second SIM card) or not, so as to realize the cooperative work of the two SIM cards, improve the work efficiency of the two SIM cards, and improve the network work performance of the terminal device with the two SIM cards.

[0269] Meanwhile, in order to implement the decision, the application introduces a comparison relationship of the two SIM cards respectively belonging to the operators and the information of whether the camping is successful or not, the comparison relationship can represent whether the two SIM cards respectively belonging to the operators are the same or not, and the information of whether the camping is successful or not can indicate whether the cell corresponding to the target frequency scanned by the first SIM card is camping successful or not, so as to easily implement the decision according to the comparison relationship and the information of whether the camping is successful or not.

[0270] It should be noted that the specific implementation of each operation can adopt the corresponding description of the above-mentioned method embodiment, and the terminal device 400 can be used to execute the above-mentioned method embodiment of the application, and details are not repeated.

[0271] 2. Some possible implementation manners

[0272] Some possible implementation manners are described below. Some specific descriptions can be seen in the above, and details are not repeated.

[0273] In some possible implementations, in terms of determining whether to save the cell search result information in the Acq DB of the second SIM card of the two SIM cards again or not, the processor 410 in the terminal device 400 is configured to execute the computer program or the instruction 421 stored in the memory 420 to perform the following operations:

[0274] If the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the information of whether the camping is successful or not indicates that the cell corresponding to the target frequency is camping successful, the cell search result information is saved in the Acq DB of the second SIM card again.

[0275] If the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, and the information of whether the camping is successful or not indicates that the cell corresponding to the target frequency is camping unsuccessful, the cell search result information is not saved in the Acq DB of the second SIM card again.

[0276] It should be noted that, in combination with the content in the above-mentioned "case 1", since the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, the first SIM card and the second SIM card can scan the same frequency. In this way, in the case that the first SIM card has scanned the target frequency, the second SIM card can still scan the target frequency. Since the first SIM card can camp in the cell corresponding to the target frequency successfully, the second SIM card has a great probability to camp in the cell corresponding to the target frequency successfully.

[0277] Based on this, the application can save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card stores the target frequency point, so that the second SIM card can preferentially sweep the target frequency point when performing network searching and registration, so as to complete the network searching and registration as soon as possible.

[0278] It can be seen that, by sharing information between the two Acq DBs, the dual-card cooperative work is facilitated, the dual-card work efficiency is improved, and the network work performance of the dual-card terminal device is improved.

[0279] In combination with the content in the above "Case 2", since the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs, the first SIM card and the second SIM card can sweep the same frequency point. In this way, the second SIM card can still sweep the target frequency point in the case that the first SIM card has swept the target frequency point. Since the first SIM card can fail to camp on the cell corresponding to the target frequency point, the second SIM card has a great probability of failing to camp on the cell corresponding to the target frequency point.

[0280] Based on this, the application can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can preferentially exclude the target frequency point from sweeping when performing network searching and registration, so as to complete the network searching and registration as soon as possible.

[0281] It can be seen that, by sharing information between the two Acq DBs, the dual-card cooperative work is facilitated, the dual-card work efficiency is improved, and the network work performance of the dual-card terminal device is improved.

[0282] In some possible implementations, after no longer saving the cell search result information in the Acq DB of the second SIM card, the processor 410 in the terminal device 400 is configured to execute the computer program or the instruction 421 stored in the memory 420, and further configured to perform the following operations:

[0283] If there is a record about the target frequency point in the Acq DB of the second SIM card, the target frequency point is deleted from the Acq DB of the second SIM card.

[0284] It should be noted that, in combination with the content in the above "Case 2", since the second SIM card has a great probability of failing to camp on the cell corresponding to the target frequency point, if there is a record about the target frequency point in the Acq DB of the second SIM card, the target frequency point can be deleted from the Acq DB of the second SIM card.

[0285] In this way, by deleting the target frequency point, the second SIM card no longer scans the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible.

[0286] In some possible implementations, in terms of determining whether to save the cell search result information in the Acq DB of the second SIM card of the two SIM cards again or not, the processor 410 in the terminal device 400 is configured to execute the computer program or the instruction 421 stored in the memory 420 to perform the following operations:

[0287] If the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, and the information about whether the camping is successful indicates that the camping in the cell corresponding to the target frequency point is successful, it is determined, according to the shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs, whether to save the cell search result information in the Acq DB of the second SIM card again or not.

[0288] If the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, and the information about whether the camping is successful indicates that the camping in the cell corresponding to the target frequency point is unsuccessful, the cell search result information is not saved in the Acq DB of the second SIM card again.

[0289] It should be noted that, in combination with the content in the above-mentioned "case 3", although the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs, the frequency band used by the operator to which the first SIM card belongs and the frequency band used by the operator to which the second SIM card belongs can partially overlap, and the operator to which the first SIM card belongs and the operator to which the second SIM card can share the same cell.

[0290] In addition, since the information about whether the camping is successful indicates that the camping in the cell corresponding to the target frequency point is successful, the second SIM card can also camp in the cell corresponding to the target frequency point successfully.

[0291] Based on this, the application introduces the shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs. The shared use state can represent whether the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point or not.

[0292] In this way, the application can determine whether to save the cell search result information in the Acq DB of the second SIM card again according to the shared use state, so as to realize the cooperative work of the two SIM cards, improve the work efficiency of the two SIM cards, and improve the network work performance of the terminal device with two SIM cards.

[0293] In combination with the above-mentioned content in "Case 4", since the first SIM card can fail to camp on the cell corresponding to the target frequency point, the second SIM card has a high probability of also failing to camp on the cell corresponding to the target frequency point.

[0294] Based on this, the present application can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude scanning the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible, which is beneficial to realize cooperative work of dual cards, improve the working efficiency of dual cards, and improve the network working performance of the dual card terminal device.

[0295] In some possible implementations, in terms of determining whether to save the cell search result information in the Acq DB of the second SIM card or no longer save the cell search result information in the Acq DB of the second SIM card according to the sharing use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs, the processor 410 in the terminal device 400 is configured to execute the computer programs or instructions 421 stored in the memory 420 to perform the following operations:

[0296] If the cell corresponding to the target frequency point can be shared and used by the operator to which the second SIM card belongs, the cell search result information is saved in the Acq DB of the second SIM card again;

[0297] If the cell corresponding to the target frequency point cannot be shared and used by the operator to which the second SIM card belongs, the cell search result information is no longer saved in the Acq DB of the second SIM card.

[0298] It should be noted that in combination with the above-mentioned content in "Case 3", if the cell corresponding to the target frequency point can be shared and used by the operator to which the second SIM card belongs, it means that the operator to which the second SIM card belongs can use the target frequency point. At this time, since the camping success or failure information indicates that the cell corresponding to the target frequency point is camped successfully, the second SIM card has a high probability of also being camped successfully on the cell corresponding to the target frequency point.

[0299] Based on this, the present application can save the cell search result information of the first SIM card in the Acq DB of the second SIM card again. In this way, the Acq DB of the second SIM card will store the target frequency point, so that the second SIM card can scan the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible, which is beneficial to realize cooperative work of dual cards, improve the working efficiency of dual cards, and improve the network working performance of the dual card terminal device.

[0300] If the second SIM card belongs to an operator that cannot share the cell corresponding to the target frequency point, it indicates that the second SIM card belongs to an operator that cannot use the target frequency point.

[0301] Based on this, the application can no longer save the cell search result information of the first SIM card in the Acq DB of the second SIM card. In this way, the Acq DB of the second SIM card can not store the target frequency point, so that the second SIM card can exclude scanning the target frequency point when performing network searching and registration, so as to complete network searching and registration as soon as possible, thereby facilitating the implementation of dual-card cooperative work, improving the efficiency of dual-card work, and improving the network working performance of the dual-card terminal device.

[0302] In some possible implementations, if the target frequency point is in the frequency band that can be used by the operator to which the second SIM card belongs, the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point;

[0303] If the target frequency point is not in the frequency band that can be used by the operator to which the second SIM card belongs, the operator to which the second SIM card belongs cannot share the cell corresponding to the target frequency point.

[0304] It should be noted that, in combination with the content in the above-mentioned "case 3", since the frequency band used by the operator to which the first SIM card belongs and the frequency band used by the operator to which the second SIM card belongs can partially overlap, the application can determine whether the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point according to whether the target frequency point is in the overlapping frequency band. That is, whether the operator to which the second SIM card belongs can use the target frequency point is determined.

[0305] In this way, if the operator to which the second SIM card belongs can use the target frequency point, it indicates that the operator to which the second SIM card belongs can share the cell corresponding to the target frequency point. If the operator to which the second SIM card belongs cannot use the target frequency point, it indicates that the operator to which the second SIM card belongs cannot share the cell corresponding to the target frequency point.

[0306] In some possible implementations, the processor 410 in the terminal device 400 is configured to execute the computer program or the instruction 421 stored in the memory 420, and further perform the following operations:

[0307] If the first SIM card and the second SIM card have both successfully accessed the cells respectively and are in normal communication, the first SIM card is controlled to perform uplink transmission by performing uplink transmission switching on the frequency division duplex FDD uplink carrier and the time division duplex TDD uplink carrier in a time-division multiplexing manner, and the second SIM card is controlled to perform uplink transmission without performing uplink transmission switching.

[0308] It should be noted that in combination with the content in the above-mentioned "5) uplink transmission switching", in order to realize uplink enhancement, uplink transmission switching is introduced in the current uplink transmission, so that the terminal device fully utilizes the uplink resources through uplink transmission switching to improve uplink coverage and uplink throughput.

[0309] Based on this, in order to introduce uplink transmission switching in the uplink transmission of the dual card, the present application considers that, in the case that the first SIM card and the second SIM card have both successfully accessed the cells respectively and the communication is normal, the first SIM card performs uplink transmission by executing uplink transmission switching in a time-division manner on the FDD (Frequency Division Duplexing) uplink carrier and the TDD (Time Division Duplexing) uplink carrier, and the second SIM card is controlled to perform uplink transmission by not executing uplink transmission switching.

[0310] That is, the first SIM card supports uplink transmission switching, while the second SIM card does not support uplink transmission switching, so that the first SIM card can multiplex the FDD uplink carrier and the TDD uplink carrier in a time-division manner, and perform carrier switching between the FDD uplink carrier and the TDD uplink carrier.

[0311] In this way, by letting one SIM card support uplink transmission switching and letting the other SIM card not support uplink transmission switching in the uplink transmission of the dual card, it is beneficial to ensure that uplink transmission switching is realized in the uplink transmission of the dual card, and to avoid increasing communication complexity due to both SIM cards supporting uplink transmission switching.

[0312] In some possible implementations, in controlling the first SIM card to perform uplink transmission by executing uplink transmission switching in a time-division manner on the FDD uplink carrier and the TDD uplink carrier, and controlling the second SIM card to perform uplink transmission by not executing uplink transmission switching, the processor 410 in the terminal device 400 is configured to execute the computer programs or instructions 421 stored in the memory 420 to perform the following operations:

[0313] on the TDD uplink carrier, and controlling the second SIM card to not perform uplink transmission on both the TDD uplink carrier and the FDD uplink carrier;

[0314] on the TDD uplink carrier, and controlling the second SIM card to not perform uplink transmission on both the TDD uplink carrier and the FDD uplink carrier;

[0315] It should be noted that, in combination with the content in the above "5) uplink transmission switching", since the first SIM card supports uplink transmission switching, the first SIM card can multiplex the FDD uplink carrier and the TDD uplink carrier in a time-division manner, so that the first SIM can perform carrier switching.

[0316] When on the TDD uplink time slot, since the first SIM card can switch from the FDD uplink carrier to the TDD uplink carrier and use the TDD uplink carrier for uplink transmission, the embodiment of the application can allocate all transmission channels to the first SIM card for use, so that the first SIM card can occupy all transmission channels for uplink MIMO transmission, and the second SIM card does not perform uplink transmission because it does not occupy transmission channels. In this way, uplink MIMO transmission not only helps to improve the utilization efficiency of transmission channels, but also helps to preferentially ensure that the first SIM card can fully utilize uplink resources, improve uplink coverage and uplink throughput. In particular, when the first SIM card is the primary SIM card.

[0317] When on the TDD downlink time slot or the TDD special time slot, although the first SIM card supports uplink transmission switching, the first SIM card cannot use the TDD uplink carrier for uplink transmission, but can only use the FDD uplink carrier for uplink transmission. Therefore, the embodiment of the application can allocate a part of the transmission channels (such as one transmission channel) to the first SIM card for use, and allocate the remaining transmission channels (such as another transmission channel) to the second SIM card for use, so that the first SIM card can occupy a part of the transmission channels for uplink SISO transmission, and the second SIM card can occupy the remaining part of the transmission channels for uplink SISO transmission. In this way, both SIM cards performing uplink SISO transmission helps to simultaneously ensure dual-card dual-tunnel, so as to realize dual-card cooperative work, improve dual-card work efficiency, and improve the network work performance of the dual-card terminal device.

[0318] Five, other related example descriptions

[0319] In some possible implementations, the method embodiments described above can be applied to a terminal device or in a terminal device. That is, the execution subject of the method embodiments described above can be a terminal device, a chip, a chip module or a module, etc., and no specific limitation is made in this regard.

[0320] The embodiment of the application further provides a chip including a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to realize the steps described in the above method embodiments.

[0321] The embodiment of the present application further provides a chip module, comprising a transceiver assembly and a chip, the chip comprising a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps described in the method embodiment.

[0322] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program or instructions, and the computer program or instructions are executed to implement the steps described in the method embodiment.

[0323] The embodiment of the present application further provides a computer program product, comprising a computer program or instructions, and the computer program or instructions are executed to implement the steps described in the method embodiment.

[0324] The embodiment of the present application further provides a communication system, comprising the terminal device and the network device.

[0325] It should be noted that, for the above-mentioned various embodiments, in order to simply describe, they are all expressed as a series of action combinations. Those skilled in the art should know that the present application is not limited to the order of the actions described, because some steps in the embodiment of the present application can be performed in other order or simultaneously. In addition, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions, steps, modules or units involved are not necessarily required in the embodiment of the present application.

[0326] In the above-mentioned embodiments, the description of each embodiment of the present application has its own emphasis, and the part not described in detail in an embodiment can be referred to the related description of other embodiments.

[0327] The steps of the method or algorithm described in the embodiments of the present application can be implemented in the form of hardware or by the processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, electrically EPROM (EEPROM), register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in the terminal device or the management device. Of course, the processor and the storage medium can also exist as discrete components in the terminal device or the management device.

[0328] Those skilled in the art should be aware that, in one or more examples described above, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, the computer program instructions generate, in whole or in part, the processes or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0329] The various modules / units included in the various devices and products described in the above embodiments can be software modules / units or hardware modules / units, or partially software modules / units and partially hardware modules / units. For example, for the various devices and products applied to or integrated into a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuitry, or at least some of the modules / units can be implemented in the form of software programs running on a processor integrated in the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuitry; for the various devices and products applied to or integrated into a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuitry, and different modules / units can be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules / units can be implemented in the form of software programs running on a processor integrated in the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuitry; for the various devices and products applied to or integrated into a terminal device, the various modules / units included therein can all be implemented in the form of hardware such as circuitry, and different modules / units can be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the terminal device, or at least some of the modules / units can be implemented in the form of software programs running on a processor integrated in the terminal device, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuitry.

[0330] The above detailed description of the specific implementation of the embodiments of the present application has further explained the purposes, technical solutions, and beneficial effects of the embodiments of the present application. It should be understood that the above description is only a specific implementation of the embodiments of the present application and is not intended to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A method for dual card cooperation, characterized in that, The method is applied to a terminal device having two subscriber identity module (SIM) cards, and comprises: acquiring cell search result information of a first SIM card among the two SIM cards, the cell search result information comprising a target frequency point and information about whether a cell corresponding to the target frequency point is successfully camped on or not, the information about whether the cell is successfully camped on or not being used to indicate whether the cell corresponding to the target frequency point is successfully camped on or not; storing the cell search result information in an acquisition database (Acq DB) of the first SIM card, and determining whether to store the cell search result information in an Acq DB of a second SIM card among the two SIM cards again or not according to a comparison relationship between the two SIM cards and the information about whether the cell is successfully camped on or not.

2. The method of claim 1, wherein, The determining whether to store the cell search result information in the Acq DB of the second SIM card again or not according to the comparison relationship between the two SIM cards and the information about whether the cell is successfully camped on or not comprises: if the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs and the information about whether the cell is successfully camped on or not indicates that the cell corresponding to the target frequency point is successfully camped on, storing the cell search result information in the Acq DB of the second SIM card again; if the operator to which the first SIM card belongs is the same as the operator to which the second SIM card belongs and the information about whether the cell is successfully camped on or not indicates that the cell corresponding to the target frequency point is not successfully camped on, not storing the cell search result information in the Acq DB of the second SIM card again.

3. The method of claim 2, wherein, After the not storing the cell search result information in the Acq DB of the second SIM card again, the method further comprises: if there is a record about the target frequency point in the Acq DB of the second SIM card, deleting the target frequency point from the Acq DB of the second SIM card.

4. The method of claim 1, wherein, The determining whether to store the cell search result information in the Acq DB of the second SIM card again or not according to the comparison relationship between the two SIM cards and the information about whether the cell is successfully camped on or not comprises: if the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs and the information about whether the cell is successfully camped on or not indicates that the cell corresponding to the target frequency point is successfully camped on, determining whether to store the cell search result information in the Acq DB of the second SIM card again or not according to a shared use state of the cell corresponding to the target frequency point by the operator to which the second SIM card belongs; and if the operator to which the first SIM card belongs is different from the operator to which the second SIM card belongs and the information about whether the cell is successfully camped on or not indicates that the cell corresponding to the target frequency point is not successfully camped on, not storing the cell search result information in the Acq DB of the second SIM card again. If the first SIM card belongs to a different operator from the second SIM card, and the camping success or failure information indicates that the cell corresponding to the target frequency point fails to camp, the cell search result information is no longer saved in the Acq DB of the second SIM card.

5. The method of claim 4, wherein, The determining whether to save the cell search result information in the Acq DB of the second SIM card or not includes: If the second SIM card can share the cell corresponding to the target frequency point, the cell search result information is saved in the Acq DB of the second SIM card again. If the second SIM card cannot share the cell corresponding to the target frequency point, the cell search result information is no longer saved in the Acq DB of the second SIM card.

6. The method according to claim 4 or 5, characterized in that, If the target frequency point is in the frequency band that can be used by the operator of the second SIM card, the second SIM card can share the cell corresponding to the target frequency point. If the target frequency point is not in the frequency band that can be used by the operator of the second SIM card, the second SIM card cannot share the cell corresponding to the target frequency point.

7. The method of claim 1, wherein, The method further includes: If the first SIM card and the second SIM card have successfully accessed the cells respectively and communicate normally, the first SIM card is controlled to multiplex in a time-division manner for a frequency division duplex (FDD) uplink carrier and a time division duplex (TDD) uplink carrier, and perform uplink transmission by performing uplink transmission switching on the carrier after multiplexing in a time-division manner, and the second SIM card is controlled to perform uplink transmission without performing uplink transmission switching.

8. The method of claim 7, wherein, The controlling the first SIM card to multiplex in a time-division manner for an FDD uplink carrier and a TDD uplink carrier, and perform uplink transmission by performing uplink transmission switching on the carrier after multiplexing in a time-division manner, and the controlling the second SIM card to perform uplink transmission without performing uplink transmission switching includes: On a TDD uplink time slot, the first SIM card is controlled to perform uplink multiple-input multiple-output (MIMO) transmission on the TDD uplink carrier using all transmission channels, and the second SIM card is controlled to not perform uplink transmission on the TDD uplink carrier and the FDD uplink carrier; On a TDD downlink time slot and a TDD special time slot, the first SIM card is controlled to perform uplink single-input single-output (SISO) transmission on the FDD uplink carrier, and the second SIM card is controlled to perform uplink SISO transmission on the FDD uplink carrier.

9. A dual card co-operation apparatus, characterized by, The apparatus is applied to a terminal device, and the terminal device has two subscriber identity modules (SIM) cards; the apparatus includes: The apparatus is applied to a terminal device, and the terminal device has two subscriber identity modules (SIM) cards; the apparatus includes: An acquisition unit is configured to acquire cell search result information of a first SIM card of the two SIM cards, the cell search result information comprising a target frequency point, and information about whether a cell corresponding to the target frequency point is successfully camped on or not, the information about whether the cell is successfully camped on or not being used to indicate that the cell corresponding to the target frequency point is successfully camped on or the cell corresponding to the target frequency point is not successfully camped on. A cooperation unit is configured to save the cell search result information in an acquisition database (Acq DB) of the first SIM card, and determine whether the cell search result information is to be further saved in an Acq DB of a second SIM card of the two SIM cards or not according to a comparison relationship between the two SIM cards and the information about whether the cell is successfully camped on or not.

10. A terminal device comprising a processor, a memory, and a computer program or instructions stored on the memory, wherein the computer program or instructions are configured to cause the processor to perform the method of any one of claims 1-9. The processor executes the computer program or instruction to implement the steps of the method of any one of claims 1-8.

11. A chip comprising a processor and a communication interface, characterized in that, The processor executes the steps of the method of any one of claims 1-8.

12. A computer-readable storage medium, characterized in that, The computer program or instruction stored in the computer readable medium is executed to implement the steps of the method of any one of claims 1-8.

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