Terminal camping method and apparatus, terminal, and network-side device

Abstract

The present application belongs to the technical field of communications, and discloses a terminal camping method and apparatus, a terminal, and a network-side device. The terminal camping method in an embodiment of the present application comprises: when a terminal registers in a first mobile communication system and registers in a second mobile communication system, determining single camping or dual camping. Said single camping comprises: camping in a first RAT or camping in a second RAT, the first RAT being a RAT in the first mobile communication system, and the second RAT being a RAT in the second mobile communication system. Said dual camping comprises: camping in the first RAT and camping in the second RAT.

Description

Terminal residency method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311176548.7 filed in China on September 12, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a terminal residency method, device, terminal and network-side equipment. Background Art

[0004] At present, there may be a problem that the network coverage of the mobile communication system currently registered by the user equipment (UE) is not comprehensive. For example, for the fifth generation mobile communication technology (5G) network, at some edge locations of the 5G network, the 5G signal coverage is poor, and the signal of the fourth generation mobile communication technology (4G) network may be better. In addition, the UE may have the ability of dual-residence, that is, it can reside on two radio access technologies (RAT) to monitor paging. The relevant technology does not support the UE to perform dual-residence according to the network coverage of different mobile communication systems, resulting in the UE missing paging in areas with poor network coverage.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a terminal residency method, apparatus, terminal, and network-side equipment, which can solve the problem of UE missing paging.

[0007] In a first aspect, a terminal residency method is provided, which is executed by the terminal, and the method includes:

[0008] determining single camping or dual camping when the terminal is registered in the first mobile communication system and registered in the second mobile communication system;

[0009] The single residency includes: residing in a first radio access technology RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system;

[0010] The dual camping includes camping on the first RAT and camping on the second RAT.

[0011] In a second aspect, a terminal residency method is provided, which is performed by a network-side device, and the method includes:

[0012] The network side device sends instruction information to the terminal, where the instruction information is used to instruct the terminal to single-resident or dual-resident;

[0013] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in a first mobile communication system, and the second RAT is a RAT in a second mobile communication system;

[0014] The dual camping includes camping on the first RAT and camping on the second RAT.

[0015] In a third aspect, a resident device of a terminal is provided, which is applied to the terminal and includes:

[0016] A first determining module is configured to determine single residency or dual residency when registering in the first mobile communication system and registering in the second mobile communication system;

[0017] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system;

[0018] The dual camping includes camping on the first RAT and camping on the second RAT.

[0019] In a fourth aspect, a terminal resident device is provided, which is applied to a network-side device, including:

[0020] A first sending module is used to send instruction information to the terminal, where the instruction information is used to instruct the terminal to single-resident or dual-resident;

[0021] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in a first mobile communication system, and the second RAT is a RAT in a second mobile communication system;

[0022] The dual camping includes camping on the first RAT and camping on the second RAT.

[0023] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0024] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is configured to determine single residency or dual residency when registering in a first mobile communication system and registering in a second mobile communication system; wherein the single residency includes: residing in a first RAT or residing in a second RAT, the first RAT being the RAT in the first mobile communication system, and the second RAT being the RAT in the second mobile communication system; the dual residency includes: residing in the first RAT and residing in the second RAT.

[0025] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0026] In an eighth aspect, a network-side device is provided, comprising a processor and a communication interface, wherein the communication interface is used to send indication information to a terminal, the indication information being used to indicate whether the terminal is single-resident or dual-resident; wherein the single resident includes: resident in a first RAT or resident in a second RAT, the first RAT being a RAT in a first mobile communication system, and the second RAT being a RAT in a second mobile communication system; the dual resident includes: resident in the first RAT and resident in the second RAT.

[0027] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0028] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0029] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0030] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the terminal residence method as described in the first aspect, or to implement the steps of the terminal residence method as described in the second aspect.

[0031] In the embodiment of the present application, when the terminal is dual-registered with the first mobile communication system and the second mobile communication system, it can camp on the RAT of one mobile communication system or dual-camp on the RATs of both mobile communication systems. This can effectively save network paging resources and reduce terminal power consumption, or prevent the terminal from missing paging messages. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0033] FIG2 is a flow chart of a method for resident terminal according to an embodiment of the present application;

[0034] FIG3 is a second flow chart of the method for resident terminal according to an embodiment of the present application;

[0035] FIG4 is a schematic diagram of a flow chart of a resident device of a terminal according to an embodiment of the present application;

[0036] FIG5 is a second flow chart of the resident device of the terminal according to an embodiment of the present application;

[0037] FIG6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0038] FIG7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0039] FIG8 is a schematic structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0041] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0042] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0043] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0044] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0045] When describing the embodiments of the present application, some concepts used in the following description are first explained.

[0046] 1. Measurement criteria for cell reselection (conditions for starting neighboring cell measurements):

[0047] After the UE successfully camps on the cell, it will continue to measure the cell in which it is located and start measuring neighboring cells when the signal quality of the cell (i.e., the cell selection reception level (Srxlev) / cell selection quality value (Squal)) falls below a certain threshold or a high-priority frequency point appears. SintrasearchP and SintrasearchQ are the thresholds for starting intra-frequency measurements, while SnonintrasearchP and SnonintrasearchQ are the thresholds for starting inter-frequency / inter-system measurements.

[0048] 2. Priority rules for cell reselection (i.e., cell reselection decision conditions):

[0049] The cell reselection priorities include (1) to (3) as follows:

[0050] (1) High priority frequency (NR or alien system): Srxlev>Thresh x，highP or Squal>Thresh x，highQ ;

[0051] (2) Same frequency and different frequencies with the same priority: Calculate specific values according to the R criterion and sort them to obtain the optimal cell, where the R criterion is as follows:

[0052] For the serving cell: R s = Q meas,s + Q hyst - Qoffsettemp;

[0053] For the neighbor cell: R n = Q meas,n - Qoffset - Qoffsettemp;

[0054] (3) Low-priority frequencies (NR or heterogeneous systems):

[0055] Power criterion: Srxlev < Threshserving, lowP and Srxlev > Thresh x，lowP ;

[0056] Quality criterion: Squal < Threshserving, lowQ and Squal > Thresh x，lowQ .

[0057] Among them, Thresh x，highP represents the signal power threshold corresponding to the neighbor cell of the high-priority frequency, Thresh x，highQ represents the signal quality threshold corresponding to the neighbor cell of the high-priority frequency, Q meas,s represents the measurement result of the reference signal received power (RSRP) of the resident cell, Q hyst represents the hysteresis value of the serving cell measurement quantity, Q meas,n represents the RSRP measurement result of the neighbor cell, Qoffset represents the offset value between the neighbor cell and the current resident cell, Threshserving, lowP represents the signal power threshold corresponding to the neighbor cell of the low-priority frequency, Thresh x，lowP represents the signal power threshold corresponding to the current resident cell in the case of low-priority frequency reselection, Threshserving, lowQ represents the signal quality threshold corresponding to the neighbor cell of the low-priority frequency, Thresh x，lowQ represents the signal quality threshold corresponding to the current resident cell in the case of low-priority frequency reselection.

[0058] III. Tracking area update / Registration area update:

[0059] Tracking Area Update (TAU) is a process in the 4G system, that is, the network side equipment configures a tracking area for the terminal, and the tracking area includes a series of cells. If there is a downlink service arriving at the network side, the network side will page the UE in each cell within the tracking area. If the cell where the UE resides does not belong to the cells in the tracking area, the UE needs to notify the network side of the current location of the UE, that is, through the TAU process. Similarly, in 5G, the UE location management process is called the registration process, including initial registration, mobility registration, and periodic registration. Among them, for mobility registration, the network side will configure a registration area for the terminal, and the registration area also includes a series of cells. If the cell where the UE resides does not belong to the cells in the registration area, the UE initiates a mobility registration process. When the UE performs TAU or mobility registration, the network side will reconfigure the tracking area or registration area for the UE.

[0060] The following, in conjunction with the accompanying drawings, describes in detail the terminal residency method, apparatus, terminal, and network-side equipment provided by the embodiments of the present application through some embodiments and their application scenarios.

[0061] As shown in FIG2 , the present application provides a terminal residency method, which is applied to the terminal and includes:

[0062] Step 201: When a terminal is registered in a first mobile communication system and in a second mobile communication system, determining whether to single-reside or dual-reside;

[0063] The single residency includes: residing in a first radio access technology RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system;

[0064] The dual camping includes camping on the first RAT and camping on the second RAT.

[0065] In this embodiment, the first mobile communication system and the second mobile communication system may include but are not limited to a 4G system, a 5G system, and a 6G system. The terminal performs dual registration in the first mobile communication system and the second mobile communication system, which can be understood as the UE registering in both of the above mobile communication systems at the same time. Specifically, in the 5G system, the UE registers in the core network (5G Core Network, 5GC) of the 5G system. In the 4G system, the UE registers in the core network (Evolved Packet Core, EPC) of the 4G system.

[0066] In this embodiment, when the terminal performs dual registration in the first mobile communication system and the second mobile communication system, single residency or dual residency is determined. Single residency means that the terminal resides in one of the first RAT and the second RAT; dual residency means residing in different RATs: the terminal resides in the first RAT and the second RAT at the same time. That is, in the case of dual registration, the terminal can reside in one of the RATs or in both RATs. The first RAT is the RAT in the first mobile communication system, and the second RAT is the RAT in the second mobile communication system. For example, if the first mobile communication system is a 4G system, the corresponding RAT is Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (Evolved Universal Terrestrial Radio Access, E-UTRA). If the first mobile communication system is a 5G system, the corresponding RAT is NR.

[0067] When the terminal dual-resides in the first RAT and the second RAT, the first RAT and the second RAT are different, for example: the first RAT is a 5G network and the second RAT is a 4G network; the first RAT is a 6G network and the second RAT is a 5G network. It should be noted that the embodiments of this application do not limit the specific network standards of the first RAT and the second RAT. They can be single-residence or dual-residence of mobile communication technologies in related technologies, or single-residence or dual-residence of future mobile communication technologies.

[0068] In the embodiment of the present application, when a terminal is dual-registered in a first RAT and a second RAT, it can camp on either RAT alone or in both RATs, thereby effectively saving network paging resources and reducing terminal power consumption, or preventing the terminal from missing paging messages.

[0069] As an optional embodiment, determining single residency or dual residency includes at least one of the following:

[0070] Determine single dwell or double dwell based on signal quality;

[0071] Single residency or dual residency is determined based on the instruction information sent by the network side device.

[0072] In this embodiment, when the terminal determines single or dual residency in the dual registration scenario, the determination may be based on signal quality or based on indication information from a network device. Optionally, the terminal determines the RAT for single residency based on the indication information from the network device. When the terminal determines single or dual residency based on signal quality, the network device may perform dual paging.

[0073] Optionally, when the terminal is camping on the first RAT or the second RAT, if the signal of the currently camped first RAT or the second RAT is lower than a preset threshold, the terminal may initiate inter-RAT measurement, ie, measure the signal quality of another RAT, thereby selecting another RAT for dual camping.

[0074] As an optional embodiment, determining single dwell or dual dwell based on signal quality includes:

[0075] If signal quality meets a first condition, dual camp on a first preset RAT and a second preset RAT, wherein the first preset RAT is the first RAT or the second RAT, the second preset RAT is the second RAT or the first RAT, and the first preset RAT and the second preset RAT are different;

[0076] The signal quality satisfies the first condition, including at least one of the following:

[0077] The cell signal quality of the first preset RAT is less than or equal to a first value;

[0078] The cell signal quality of the second preset RAT is greater than or equal to a second value.

[0079] In this embodiment, when the terminal determines single camp or dual camp based on signal quality, if the signal quality meets the first condition described above, the terminal can dual camp on the first preset RAT and the second preset RAT. The first preset RAT is one of the first RAT and the second RAT, and the second preset RAT is the other of the first RAT and the second RAT. The first preset RAT and the second preset RAT can be RATs agreed upon by the protocol, indicated by a network-side device, or determined by the terminal. For example, the first preset RAT can be NR, and the second preset RAT can be E-UTRA. That is, if the NR cell signal quality is less than or equal to a first value, and / or the Evolved Universal Mobile Telecommunications System (UMTS) terrestrial radio access (E-UTRA) cell signal quality is greater than or equal to a second value, the terminal dual camps on NR and E-UTRA. Exemplarily, the NR cell signal quality is less than or equal to the first value, indicating that there is at least one NR cell whose signal quality is less than or equal to the first value. Exemplarily, the terminal camping on NR means that the UE camps on a cell of NR. The first value and the second value may be agreed upon by the protocol, configured on the network side, or set by the terminal itself according to communication quality requirements.

[0080] Optionally, determining single dwell or dual dwell based on signal quality further includes at least one of the following:

[0081] If the signal quality does not meet the first condition, camping on the first preset RAT;

[0082] When the terminal is in dual-residence, if the signal quality satisfies a second condition, stopping residing in the second preset RAT;

[0083] The signal quality satisfies the second condition, including at least one of the following:

[0084] The cell signal quality of the first preset RAT is greater than or equal to a third value;

[0085] The cell signal quality of the second preset RAT is less than or equal to a fourth value.

[0086] In this embodiment, when the terminal determines single camp or dual camp based on signal quality, if the signal quality does not meet the first condition, the terminal camps on the first preset RAT. The signal quality not meeting the first condition means that: the signal quality of the cell of the first preset RAT is greater than a first value; and / or the signal quality of the cell of the second preset RAT is less than a second value.

[0087] For example, the first preset RAT may be NR, and the second preset RAT may be E-UTRA. When the cell signal quality of NR is greater than a first value and / or the cell signal quality of E-UTRA is less than a second value, the signal quality of NR is better, and the terminal may camp solely on NR.

[0088] In the case of dual camping on a terminal, if the signal quality meets the second condition, the terminal stops camping on the second preset RAT. For example, the first preset RAT may be NR, and the second preset RAT may be E-UTRA. When the NR cell signal quality is greater than or equal to the third value, and / or the E-UTRA cell signal quality is less than or equal to the fourth value, the NR signal quality is better, and the terminal may stop camping on E-UTRA, thereby reducing UE power consumption.

[0089] The third value and the fourth value may be agreed upon by protocol, configured by the network, or set by the terminal according to communication quality requirements. The third value may be the same as or different from the first value, and the fourth value may be the same as or different from the second value, without limitation herein.

[0090] As an optional embodiment, when the signal quality satisfies the first condition, dual-camping on the first preset RAT and the second preset RAT includes:

[0091] If the signal quality continuously satisfies the first condition within a first preset time, dual camping is performed on the first preset RAT and the second preset RAT.

[0092] In this embodiment, the situation where the cell signal quality of the first preset RAT is less than or equal to the first value and the situation where the cell signal quality of the second preset RAT is greater than or equal to the second value may be caused by instantaneous signal fluctuations. Therefore, in order to avoid the terminal frequently switching between dual residence and single residence, the terminal can dual-reside in the first preset RAT and the second preset RAT when the duration that the signal quality meets the first condition reaches a first preset time.

[0093] As an optional embodiment, if the signal quality satisfies the second condition, stopping residing in the second preset RAT includes:

[0094] If the signal quality continues to meet the second condition within a second preset time, the terminal stops staying in the second preset RAT.

[0095] In this embodiment, when the duration during which the signal quality meets the second condition reaches a second preset time, the terminal stops residing in the second preset RAT and the single-residing RAT.

[0096] As an optional embodiment, the method further includes: sending demand information of the terminal to the network-side device, where the demand information is used to indicate one of the following:

[0097] The terminal desires dual resident;

[0098] The terminal desires single residency;

[0099] The terminal desires a single-resident RAT.

[0100] In this embodiment, the terminal can report its own requirements to the network device, indicating whether it needs dual-residence, single-residence, or which RAT it needs to single-reside. The network device can send indication information to the terminal based on the terminal's requirements, thereby instructing the terminal to single-reside or dual-residence, or indicating the RAT on which the terminal needs to single-reside.

[0101] As an optional embodiment, when dual residency is determined, the method further includes at least one of the following:

[0102] (1) The terminal does not perform inter-RAT cell reselection, or, if inter-RAT cell reselection conditions are met, performs inter-RAT cell reselection, and the terminal resides on the reselected RAT alone;

[0103] (2) Perform cell reselection within each RAT;

[0104] (3) The terminal receives system messages in each RAT, or receives system messages only in a preset RAT;

[0105] (4) The terminal receives short messages in each RAT, or receives short messages only in a preset RAT.

[0106] In this embodiment, when a terminal is performing dual camping, the terminal may not perform inter-RAT cell reselection, or the network-side device may configure the inter-RAT cell reselection conditions to be difficult to achieve. If the terminal meets the inter-RAT cell reselection conditions, inter-RAT cell reselection may be performed. In this case, the terminal camps on a single RAT after the reselection, that is, stops camping on another cell in the same RAT, thereby avoiding dual camping on the same RAT. The inter-RAT cell reselection conditions are, for example, that the cell signal quality of the terminal's current serving RAT is lower than a preset threshold, and the cell signal quality of the target RAT is higher than a preset threshold.

[0107] It should be noted that in this embodiment, when the UE determines dual camping, the terminal does not perform inter-RAT cell reselection, or, if the inter-RAT cell reselection conditions are met, performs inter-RAT cell reselection and camps on a single RAT after reselection; and performs cell reselection within each RAT. This can be understood as follows: during dual camping, the UE does not perform inter-RAT cell reselection, or, if the inter-RAT cell reselection conditions are met, performs inter-RAT cell reselection and camps on a single RAT after reselection; and performs cell reselection within each RAT. A similar understanding will be adopted below and will not be elaborated upon.

[0108] When dual-camping, the terminal can also perform intra-RAT cell reselection. For example, if the first preset RAT is an NR network and the second preset RAT is an E-UTRA network, and the terminal camps on the first preset RAT and the second preset RAT, during the dual-camp period, if the signal quality of the E-UTRA cell in which the UE is camping deteriorates due to UE mobility, the UE can reselect to another E-UTRA cell with better signal quality.

[0109] As an optional embodiment, the method further includes:

[0110] When the terminal is camped on the reselected RAT alone and has not moved out of the tracking area or registration area of ​​the reselected RAT, a Tracking Area Update (TAU) procedure or a Registration Area Update procedure is initiated.

[0111] It can be understood that when the terminal resides solely on the reselected RAT, if the UE has not moved out of the tracking area or registration area of ​​the reselected RAT, the UE can still receive paging messages through the RAT. However, the network side is unaware that the other RAT can no longer page the UE and continues to page the UE on the other RAT. To conserve paging resources on the network side, the UE initiates a tracking area update procedure or a registration area update procedure when it resides solely on the reselected RAT and has not moved out of the tracking area or registration area of ​​the reselected RAT. In this way, the network side can choose to send paging messages only on this RAT.

[0112] It should be noted that, in the embodiment of the present application, the tracking area update process is a TAU process, and the registration area update process may be a mobility registration process.

[0113] As an optional embodiment, when dual residency is determined, the method further includes:

[0114] If the terminal moves out of the tracking area and the registration area, the tracking area update process and the registration area update process are executed;

[0115] or,

[0116] Execute the tracking area update process and / or registration area update process according to the location update period configured by the network side device.

[0117] In this embodiment, when performing dual registration, the terminal may report capability information to the terminal, indicating that the terminal supports dual residency. Based on this, the network-side device may configure tracking area configuration and registration area configuration for the terminal for location management of the terminal in dual residency. The tracking area is used when residing in E-UTRA, and the registration area is used when residing in NR. In addition, the network-side device may also configure the location update period for tracking area updates and / or registration area location updates, i.e., a periodic location update timer, for the terminal.

[0118] When the terminal is in single-residence mode, if it moves out of the tracking area or registration area of ​​the RAT in which it is single-residence, a tracking area update or registration area update is initiated in the RAT. When the terminal is in dual-residence mode, if it moves out of the tracking area and the registration area, the tracking area update process and the registration area update process are triggered; alternatively, the terminal can determine whether to perform the tracking area update process and / or the registration area update process, and the RAT in which to perform the tracking area update and / or registration area update based on the tracking area configuration information and the registration area configuration information configured by the network-side device.

[0119] As an optional embodiment, executing the tracking area update process and / or the registration area update process according to the location update period configured by the network side device includes:

[0120] The terminal determines a target RAT based on the location update period and the signal quality of the RAT, and initiates a tracking area update procedure and / or a registration area update procedure to the target RAT;

[0121] or,

[0122] Based on the location update period, the terminal initiates a tracking area update procedure and / or a registration area update procedure to the RAT indicated by the network side device.

[0123] In this embodiment, the tracking area configuration information and / or registration area configuration information configured by the network device for the terminal includes the above-mentioned location update period. During the location update period, the terminal may determine, based on the signal quality of the RAT, to initiate a tracking area update procedure and / or a registration area update procedure in a target RAT. For example, the terminal may select a RAT with better signal quality to initiate a tracking area update procedure and / or a registration area update procedure.

[0124] The network-side device may also indicate to the terminal the RAT on which the tracking area update procedure and / or the registration area update procedure needs to be initiated. During the location update period, the terminal initiates the tracking area update procedure and / or the registration area update procedure on the RAT indicated by the network-side device. For example: the network-side device instructs the terminal to initiate the tracking area update procedure or the registration area update procedure on the first preset RAT; or, the network-side device instructs the terminal to initiate the tracking area update procedure or the registration area update procedure on the second preset RAT; or, the network-side device instructs the terminal to initiate the tracking area update procedure or the registration area update procedure on both RATs.

[0125] As an optional embodiment, when dual residency is determined, the method further includes:

[0126] If the terminal moves out of the tracking area or out of the registration area, perform one of the following:

[0127] If the signal quality of the RAT corresponding to the area where the terminal has not moved out is greater than or equal to the fifth value, the tracking area update process or the registration area update process is not performed;

[0128] If the RAT corresponding to the area where the terminal moves out is the RAT indicated by the network side device, a tracking area update process or a registration area update process is executed.

[0129] In this embodiment, when the terminal is dual-resident, it may move out of the tracking area or registration area of ​​one RAT. If the terminal is currently still in the registration area or tracking area of ​​the other RAT and the signal quality of the RAT is greater than or equal to a fifth value, the terminal does not initiate a tracking area update or a registration area update. If the signal quality of the RAT is less than the fifth value, the terminal initiates a tracking area update or a registration area update. The fifth value may be agreed upon by the protocol, configured by the network, or determined by the terminal based on communication quality requirements.

[0130] Alternatively, if the RAT indicated by the network-side device is the RAT corresponding to the area from which the terminal moves out, the terminal initiates a tracking area update or a registration area update.

[0131] As an optional embodiment, when dual residency is determined, the method further includes at least one of the following:

[0132] (1) According to preset discontinuous reception (DRX) configuration information, a paging message is monitored in the first RAT or the second RAT. The preset DRX configuration information is only used in the case of dual resident of the terminal.

[0133] In this embodiment, when the terminal is dual-resident, when monitoring the paging message, it can be based on the preset DRX configuration information to monitor the paging message in the first RAT or the second RAT. In this way, the terminal allows the first RAT or the second RAT to use a larger DRX cycle to receive paging (paging), thereby reducing the terminal power consumption when the terminal is always monitoring the paging in the two RATs, and ensuring the dual residence of the terminal in the first RAT and the second RAT. The preset DRX configuration information can be the DRX information configured by the network side device for the case of dual residence of the terminal. That is, when the terminal is single-resident in the NR cell, the first DRX configuration is used to monitor the paging message in the resident cell. When the terminal is dual-resident, the second DRX configuration is used to monitor the paging message in the resident NR cell. The sleep time of the second DRX configuration is longer than the sleep time of the first DRX configuration.

[0134] (2) Both the first RAT and the second RAT monitor the paging message.

[0135] In this embodiment, when the terminal is in dual-resident mode, the network device may send paging messages in both RATs. In the case of poor coverage, to avoid missing paging messages, the terminal may monitor paging messages in both the first RAT and the second RAT.

[0136] (3) When a paging message is detected in one RAT, the monitoring of the paging message in the other RAT is stopped.

[0137] In this embodiment, when the terminal is dual-resident, the network device may send paging messages on both RATs. These paging messages may be triggered by the same service. The terminal can monitor paging messages on both RATs simultaneously. If a paging message is detected on one RAT, the terminal stops monitoring on the other RAT. This ensures that no paging messages are missed and saves terminal power.

[0138] As an optional embodiment, the method further includes at least one of the following:

[0139] In a case where the paging message is monitored, determining a RAT for performing a radio resource control (RRC) connection process according to the paging message;

[0140] The RAT for performing the RRC connection process is determined based on the cell signal quality.

[0141] In this embodiment, upon receiving a paging message, the terminal may initiate an RRC connection. The terminal may determine the RAT to initiate the RRC connection based on the paging message or based on cell signal quality. Alternatively, the terminal may determine the RAT to initiate the RRC connection based on whether the paging message carries indication information and / or the content of the indication information.

[0142] Optionally, the determining, according to the paging message, a RAT for performing an RRC connection process includes at least one of the following:

[0143] (1) If the paging message carries first indication information, an RRC connection process is initiated in the RAT indicated by the first indication information.

[0144] In this embodiment, the paging message may carry first indication information, where the first indication information is used to indicate the RAT in which the terminal initiates the RRC connection process. For example, if the first indication information includes NR, the terminal initiates the RRC connection in NR. If the first indication information includes E-UTRA, the terminal initiates the RRC connection in E-UTRA. It should be noted that the RAT indicated by the first indication information may be one RAT or multiple RATs.

[0145] Optionally, if the paging message does not carry the first indication information, the terminal may initiate an RRC connection in the RAT that receives the paging message.

[0146] (2) If the paging message carries the second indication information, initiating an RRC connection process in the preset RAT;

[0147] (3) If the paging message does not carry the second indication information, initiating an RRC connection process in the RAT that receives the paging message.

[0148] In this embodiment, the RRC connection process is specifically an RRC connection establishment process for a UE in an RRC idle (IDLE) state, and an RRC connection recovery process for a UE in an RRC inactive state.

[0149] The second indication information is used to instruct the terminal to initiate an RRC connection on a preset RAT. The second indication information may be preset bit information, such as 1 or 0, or other preset values. The second indication information may be associated with the preset RAT, for example: when the second indication information is 1, the terminal initiates an RRC connection on the first preset RAT; when the second indication information is 0, the terminal initiates an RRC connection on the second preset RAT. Alternatively, regardless of the specific value of the second indication information, as long as the paging message carries the second indication information, an RRC connection is initiated on the first preset RAT, or an RRC connection is initiated on the second preset RAT. If the paging message does not carry the second indication information, the terminal initiates an RRC connection on the RAT where the paging message is received.

[0150] Optionally, if the terminal receives paging messages in both RATs, the terminal may respond to the paging messages separately. Alternatively, if the paging message is triggered by the same service, the network side device may want the terminal to respond to the paging message of only one RAT. If it is triggered by different services, the terminal is required to respond to the two paging messages separately. The network side device may carry an additional indication in the paging message, which may be the first indication information or the second indication information. The indication is, for example: RATofResponse={anchor, another RAT}. If the indication in the paging message is "anchor", it means that the terminal needs to respond to the paging in the RAT that currently receives the paging message, that is, initiate the RRC connection process; if the indication in the paging message is "another RAT", the terminal responds to the paging in another RAT, that is, initiates the RRC connection process.

[0151] Optionally, determining the RAT for performing the RRC connection process based on the cell signal quality includes performing the RRC connection process on a RAT whose signal quality meets a preset quality threshold, or performing the RRC connection process on a RAT with a suitable cell.

[0152] In this embodiment, when the terminal determines the RAT for performing the RRC connection process based on the cell signal quality, the RRC connection process can be performed on the RAT whose signal quality meets a preset quality threshold. The preset quality threshold can be agreed upon by the protocol, configured on the network side, or set by the terminal according to communication requirements; alternatively, if a RAT has a suitable cell, the terminal performs the RRC connection process on the RAT.

[0153] Optionally, the method further comprises at least one of the following:

[0154] Set the RRC connection cause value to called terminal access;

[0155] Set the access type of the access attempt corresponding to the RRC connection to 0.

[0156] In this embodiment, when initiating an RRC connection procedure, the terminal may set the RRC connection cause value to Mobile Termination access (MT-access). If the initiated RRC connection procedure is an RRC connection establishment procedure, the RRC connection establishment cause value is set to Mobile Termination access. If the initiated RRC connection procedure is an RRC connection recovery procedure, the RRC connection recovery cause value is set to Mobile Termination access. The terminal may also set the access category (AC) of the corresponding access attempt to 0.

[0157] As an optional embodiment, determining single residency or dual residency according to the indication information sent by the network-side device includes:

[0158] When the terminal is in an RRC connected state, receiving an RRC connection release message sent by the network side device;

[0159] Dual-residence is determined, or a single-residence RAT is determined, according to the third indication information carried in the RRC connection release message.

[0160] In this embodiment, in order to increase the data rate, the network-side device enables the terminal to access two RATs for data transmission. The network-side device then sends third indication information to the terminal, indicating whether it is single-resident or dual-resident. The third indication information is used to instruct the terminal to perform single-resident, dual-resident, or single-resident RAT. Optionally, the third indication information can directly instruct the terminal to perform single-resident, dual-resident, or single-resident RAT. It should be noted that the third indication information can also be other indication methods, such as associating a specific numerical value with a residency method that is not passed, which is not limited here.

[0161] The network-side device may carry the third indication information when sending an RRC connection release message to the terminal. For example: the terminal is currently in an RRC connection state of the NR network; the terminal receives an RRC connection release message, wherein the RRC connection release message indicates whether the terminal is dual-resident, single-resident, or single-resident on the RAT. Another example: the terminal is currently in an RRC connection state of the LTE network; the terminal receives an RRC connection release message, wherein the RRC connection release message indicates whether the terminal is dual-resident, single-resident, or single-resident on the RAT.

[0162] If the network device instructs the terminal to dual-camp, the terminal may monitor paging messages on both RATs in dual-camp mode, or monitor paging messages on the first or second RAT based on preset DRX configuration information; or, if a paging message is monitored on one RAT, the terminal may stop monitoring paging messages on the other RAT. If the network device instructs the terminal to single-camp, the terminal only needs to monitor paging messages on the single RAT.

[0163] In the embodiments of the present application, when a terminal is dual-registered with a first mobile communication system and a second mobile communication system, the terminal can camp on the RAT of one mobile communication system or dual-camp on the RATs of both mobile communication systems. This effectively saves network paging resources and reduces terminal power consumption, or prevents the terminal from missing paging messages.

[0164] As shown in FIG3 , an embodiment of the present application further provides a terminal residency method, which is applied to a network-side device, including:

[0165] Step 301: A network-side device sends instruction information to a terminal, where the instruction information is used to instruct the terminal to single-resident or dual-resident.

[0166] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in a first mobile communication system, and the second RAT is a RAT in a second mobile communication system;

[0167] The dual camping includes camping on the first RAT and camping on the second RAT.

[0168] In this embodiment, the first mobile communication system and the second mobile communication system may include, but are not limited to, a 4G system, a 5G system, and a 6G system. The terminal is dual-registered in the first mobile communication system and the second mobile communication system, which can be understood as the UE being simultaneously registered in both of the aforementioned mobile communication systems. Specifically, in a 5G system, the UE registers in the 5G system's core network 5GC. In a 4G system, the UE registers in the 4G system's core network EPC.

[0169] In this embodiment, when the terminal is dual-registered in the first mobile communication system and the second mobile communication system, the network-side device can instruct the terminal to perform single residency or dual residency. Single residency means that the terminal resides in one of the first RAT and the second RAT; dual residency means residing in different RATs: the terminal resides in the first RAT and the second RAT at the same time. That is, in the case of dual registration, the terminal can reside in one of the RATs or in both RATs. The first RAT is the RAT in the first mobile communication system, and the second RAT is the RAT in the second mobile communication system. For example, if the first mobile communication system is a 4G system, the corresponding RAT is E-UTRA. If the first mobile communication system is a 5G system, the corresponding RAT is NR.

[0170] Optionally, when the terminal determines single dwell or dual dwell in the case of dual registration, the terminal may also determine single dwell or dual dwell based on signal quality.

[0171] When the terminal dual-resides in the first RAT and the second RAT, the first RAT and the second RAT are different, for example: the first RAT is a 5G network and the second RAT is a 4G network; the first RAT is a 6G network and the second RAT is a 5G network. It should be noted that the embodiments of this application do not limit the specific network standards of the first RAT and the second RAT. They can be single-residence or dual-residence of mobile communication technologies in related technologies, or single-residence or dual-residence of future mobile communication technologies.

[0172] In an embodiment of the present application, a network-side device can instruct a terminal to single-camp or dual-camp. When a terminal is dual-registered with a first mobile communication system and a second mobile communication system, the terminal can single-camp on the RAT of one mobile communication system or dual-camp on the RATs of both mobile communication systems, according to the instruction information from the network-side device. This effectively conserves network paging resources and reduces terminal power consumption, or prevents the terminal from missing paging messages.

[0173] As an optional embodiment, the sending the instruction information to the terminal includes:

[0174] An RRC connection release message is sent to the terminal, where the RRC connection release message carries third indication information, where the third indication information is used to instruct the terminal to perform dual resident RAT or single resident RAT of the terminal.

[0175] In this embodiment, in order to increase the data rate, the network-side device enables the terminal to access two RATs for data transmission. The network-side device then sends third indication information to the terminal, indicating whether it is single-resident or dual-resident. The third indication information is used to instruct the terminal to perform single-resident, dual-resident, or single-resident RAT. Optionally, the third indication information can directly instruct the terminal to perform single-resident, dual-resident, or single-resident RAT. It should be noted that the third indication information can also be other indication methods, such as associating a specific numerical value with a residency method that is not passed, which is not limited here.

[0176] The network-side device may carry the third indication information when sending an RRC connection release message to the terminal. For example: the terminal is currently in an RRC connection state of the NR network; the network-side device sends an RRC connection release message to the terminal, wherein the RRC connection release message indicates whether the terminal is dual-resident, single-resident, or single-resident on the RAT. Another example: the terminal is currently in an RRC connection state of the LTE network; the network-side device sends an RRC connection release message to the terminal, wherein the RRC connection release message indicates whether the terminal is dual-resident, single-resident, or single-resident on the RAT.

[0177] Optionally, the method further includes:

[0178] sending a paging message in the first RAT and the second RAT;

[0179] or,

[0180] sending a paging message in one of the first RAT and the second RAT;

[0181] or,

[0182] The paging message is sent preferentially in one of the first RAT and the second RAT. If the paging fails, the paging message is sent in the other RAT.

[0183] In this embodiment, when the network device sends a paging message to the terminal, it may send the paging message in both the first and second RATs, or in only one of the first and second RATs; alternatively, it may prioritize sending the paging message in one of the first and second RATs, and if paging fails, send the paging message in the other RAT. Based on preset DRX configuration information, the terminal may monitor for paging messages in either the first or second RAT; alternatively, it may monitor for paging messages in both the first and second RATs; alternatively, if a paging message is detected in one RAT, it may stop monitoring the other RAT. This ensures that paging messages are not missed while also conserving terminal power.

[0184] Optionally, the paging message carries first indication information, where the first indication information is used to indicate the RAT for the terminal to initiate an RRC connection process;

[0185] or,

[0186] The paging message carries second indication information, where the second indication information is used to instruct the terminal to initiate an RRC connection process in a preset RAT.

[0187] In this embodiment, the RRC connection process is specifically an RRC connection establishment process for a UE in an RRC IDLE state, and an RRC connection recovery process for a UE in an RRC INACTIVE state.

[0188] The network-side device may include first indication information in the paging message sent, where the first indication information is used to indicate the RAT in which the terminal initiates the RRC connection process. For example, if the first indication information includes NR, the terminal initiates the RRC connection in NR. If the first indication information includes E-UTRA, the terminal initiates the RRC connection in E-UTRA. It should be noted that the RAT indicated by the first indication information may be one RAT or multiple RATs.

[0189] The network-side device may carry second indication information in the paging message sent, where the second indication information is used to instruct the terminal to initiate an RRC connection on a preset RAT. The second indication information may be preset bit information, such as 1 or 0, or may be another preset value. The second indication information may be associated with the preset RAT. For example, when the second indication information is 1, the terminal initiates an RRC connection on the first preset RAT; when the second indication information is 0, the terminal initiates an RRC connection on the second preset RAT. Alternatively, regardless of the specific value of the second indication information, as long as the paging message carries the second indication information, an RRC connection is initiated on the first preset RAT or on the second preset RAT.

[0190] As an optional embodiment, the method further includes: when the terminal is dual-resident, sending a tracking area configuration and / or a registration area configuration to the terminal.

[0191] In this embodiment, the network side device can configure tracking area configuration information and / or registration area configuration information for the terminal, and the tracking area configuration information and / or registration area configuration information includes: the tracking area or registration area of ​​the first RAT, the tracking area or registration area of ​​the second RAT, and may also include the location update period of the tracking area update and / or registration area location update.

[0192] The terminal can determine whether to perform the tracking area update process and the registration area update process, and the RAT for performing the tracking area update and / or registration area update when moving out of the tracking area and / or moving out of the registration area based on the tracking area or registration area of ​​the first RAT and the tracking area or registration area of ​​the second RAT.

[0193] The terminal may also initiate a tracking area update procedure and / or a registration area update procedure in a target RAT based on the signal quality of the RAT during the location update period. For example, the terminal may select a RAT with better signal quality to initiate a tracking area update procedure and / or a registration area update procedure.

[0194] As an optional embodiment, the method further includes:

[0195] Receive demand information sent by the terminal;

[0196] determining the instruction information according to the demand information;

[0197] The requirement information is used to indicate one of the following:

[0198] The terminal desires dual resident;

[0199] The terminal desires single residency;

[0200] The terminal desires a single-resident RAT.

[0201] In this embodiment, the terminal can report its own requirements to the network device, indicating whether it needs dual-residence, single-residence, or which RAT it needs single-residence. The network device can send indication information to the terminal based on the terminal's requirements, thereby instructing the terminal to single-reside or dual-residence, as well as the RAT for single-residence.

[0202] In an embodiment of the present application, a network-side device can instruct a terminal to single-camp or dual-camp. When a terminal is dual-registered with a first mobile communication system and a second mobile communication system, the terminal can single-camp on the RAT of one mobile communication system or dual-camp on the RATs of both mobile communication systems, according to the instruction information from the network-side device. This effectively conserves network paging resources and reduces terminal power consumption, or prevents the terminal from missing paging messages.

[0203] The terminal resident method provided in the embodiment of the present application can be executed by a terminal resident device. In the embodiment of the present application, the terminal resident device performing the terminal resident method is taken as an example to illustrate the terminal resident device provided in the embodiment of the present application.

[0204] As shown in FIG4 , an embodiment of the present application provides a resident device 400 of a terminal, which is applied to the terminal and includes:

[0205] A first determining module 410 is configured to determine single residency or dual residency when registering with the first mobile communication system and registering with the second mobile communication system;

[0206] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system;

[0207] The dual camping includes camping on the first RAT and camping on the second RAT.

[0208] Optionally, the first determining module includes at least one of the following:

[0209] A first determining unit, configured to determine single dwell or double dwell according to signal quality;

[0210] The second determining unit is configured to determine single residency or dual residency according to the indication information sent by the network side device.

[0211] Optionally, the first determining unit is specifically configured to:

[0212] If signal quality meets a first condition, dual camp on a first preset RAT and a second preset RAT, wherein the first preset RAT is the first RAT or the second RAT, the second preset RAT is the second RAT or the first RAT, and the first preset RAT and the second preset RAT are different;

[0213] The signal quality satisfies the first condition, including at least one of the following:

[0214] The cell signal quality of the first preset RAT is less than or equal to a first value;

[0215] The cell signal quality of the second preset RAT is greater than or equal to a second value.

[0216] Optionally, the first determining unit is configured to perform at least one of the following:

[0217] If the signal quality does not meet the first condition, camping on the first preset RAT;

[0218] In the case of dual residency, if the signal quality meets the second condition, stop residency in the second preset RAT;

[0219] The signal quality satisfies the second condition, including at least one of the following:

[0220] The cell signal quality of the first preset RAT is greater than or equal to a third value;

[0221] The cell signal quality of the second preset RAT is less than or equal to a fourth value.

[0222] Optionally, the first determining unit is specifically configured to:

[0223] If the signal quality continuously satisfies the first condition within a first preset time, dual camping is performed on the first preset RAT and the second preset RAT.

[0224] Optionally, the first determining unit is specifically configured to:

[0225] If the signal quality continues to meet the second condition within a second preset time, stop residing in the second preset RAT.

[0226] Optionally, the device further comprises:

[0227] The second sending module is configured to send the terminal's requirement information to the network-side device, where the requirement information indicates one of the following:

[0228] The terminal desires dual resident;

[0229] The terminal desires single residency;

[0230] The terminal desires a single-resident RAT.

[0231] Optionally, the device further comprises at least one of the following:

[0232] A first processing module is configured to not perform inter-RAT cell reselection, or, if an inter-RAT cell reselection condition is met, perform inter-RAT cell reselection and reside only in the reselected RAT;

[0233] A second processing module, configured to perform cell reselection within each RAT;

[0234] A first receiving module, configured to receive system messages in each RAT, or to receive system messages only in a preset RAT;

[0235] The second receiving module is configured to receive short messages in each RAT, or receive short messages only in a preset RAT.

[0236] Optionally, the device further comprises:

[0237] The third processing module is configured to initiate a tracking area update procedure or a registration area update procedure when the user is stationed in the reselected RAT and has not moved out of the tracking area or the registration area of ​​the reselected RAT.

[0238] Optionally, the device further includes a fourth processing module, wherein the fourth processing module is specifically configured to:

[0239] If the user moves out of the tracking area and the registration area, the tracking area update process and the registration area update process are executed;

[0240] or,

[0241] Execute the tracking area update process and / or registration area update process according to the location update period configured by the network side device.

[0242] Optionally, the fourth processing module is specifically configured to:

[0243] Determining a target RAT based on the location update period and the signal quality of the RAT, and initiating a tracking area update procedure and / or a registration area update procedure to the target RAT;

[0244] or,

[0245] Based on the location update period, a tracking area update procedure and / or a registration area update procedure is initiated to the RAT indicated by the network side device.

[0246] Optionally, the apparatus further includes: a fifth processing module, configured to: when the user moves out of the tracking area or the registration area, perform one of the following:

[0247] If the signal quality of the RAT corresponding to the area not moved out is greater than or equal to the fifth value, the tracking area update process or the registration area update process is not performed;

[0248] If the RAT corresponding to the area being moved out is the RAT indicated by the network side device, the tracking area update process or the registration area update process is executed.

[0249] Optionally, the apparatus further includes a monitoring module, configured to perform at least one of the following:

[0250] Monitoring paging messages in the first RAT or the second RAT according to preset discontinuous reception (DRX) configuration information, where the preset DRX configuration information is only used in the case of dual resident;

[0251] monitoring the paging message in both the first RAT and the second RAT;

[0252] When one RAT monitors a paging message, the other RAT stops monitoring the paging message.

[0253] Optionally, the apparatus further includes a second determining module, wherein the second determining module is specifically configured to perform at least one of the following:

[0254] In a case where the paging message is monitored, determining a RAT for performing an RRC connection process according to the paging message;

[0255] The RAT for performing the RRC connection process is determined based on the cell signal quality.

[0256] Optionally, the second determining module is specifically configured to perform at least one of the following:

[0257] If the paging message carries first indication information, initiating an RRC connection process in the RAT indicated by the first indication information;

[0258] If the paging message carries the second indication information, initiating an RRC connection process in the preset RAT;

[0259] If the paging message does not carry the second indication information, an RRC connection process is initiated in the RAT that receives the paging message.

[0260] Optionally, the second determining module is specifically configured to:

[0261] The RRC connection procedure is performed on a RAT whose signal quality meets a preset quality threshold, or the RRC connection procedure is performed on a RAT with a suitable cell.

[0262] Optionally, the apparatus further includes a setting module, configured to perform at least one of the following:

[0263] Set the RRC connection cause value to called terminal access;

[0264] Set the access type of the access attempt corresponding to the RRC connection to 0.

[0265] Optionally, the second determining unit is specifically configured to:

[0266] In the case of an RRC connected state, receiving an RRC connection release message sent by the network side device;

[0267] Dual-residence is determined, or a single-residence RAT is determined, according to the third indication information carried in the RRC connection release message.

[0268] In the embodiments of the present application, when a terminal is dual-registered with a first mobile communication system and a second mobile communication system, the terminal can camp on the RAT of one mobile communication system or dual-camp on the RATs of both mobile communication systems. This effectively saves network paging resources and reduces terminal power consumption, or prevents the terminal from missing paging messages.

[0269] As shown in FIG5 , an embodiment of the present application provides a terminal resident device 500 , which is applied to a network-side device and includes:

[0270] A first sending module 510 is configured to send instruction information to a terminal, where the instruction information is used to instruct the terminal to single-resident or dual-resident;

[0271] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in a first mobile communication system, and the second RAT is a RAT in a second mobile communication system;

[0272] The dual camping includes camping on the first RAT and camping on the second RAT.

[0273] Optionally, the first sending module is specifically configured to:

[0274] An RRC connection release message is sent to the terminal, where the RRC connection release message carries third indication information, where the third indication information is used to instruct the terminal to perform dual resident RAT or single resident RAT of the terminal.

[0275] Optionally, the device further includes a third sending module, and the third sending module is configured to:

[0276] sending a paging message in the first RAT and the second RAT;

[0277] or,

[0278] sending a paging message in one of the first RAT and the second RAT;

[0279] or,

[0280] The paging message is sent preferentially in one of the first RAT and the second RAT. If the paging fails, the paging message is sent in the other RAT.

[0281] Optionally, the paging message carries first indication information, where the first indication information is used to indicate the RAT for the terminal to initiate an RRC connection process;

[0282] or,

[0283] The paging message carries second indication information, where the second indication information is used to instruct the terminal to initiate an RRC connection process in a preset RAT.

[0284] Optionally, the device further comprises:

[0285] The fourth sending module is configured to send a tracking area configuration and / or a registration area configuration to the terminal when the terminal is dual-resident.

[0286] Optionally, the device further comprises:

[0287] The third receiving module is used to receive the demand information sent by the terminal;

[0288] determining the instruction information according to the demand information;

[0289] The requirement information is used to indicate one of the following:

[0290] The terminal desires dual resident;

[0291] The terminal desires single residency;

[0292] The terminal desires a single-resident RAT.

[0293] In an embodiment of the present application, a network-side device can instruct a terminal to single-camp or dual-camp. When a terminal is dual-registered with a first mobile communication system and a second mobile communication system, the terminal can single-camp on the RAT of one mobile communication system or dual-camp on the RATs of both mobile communication systems, according to the instruction information from the network-side device. This effectively conserves network paging resources and reduces terminal power consumption, or prevents the terminal from missing paging messages.

[0294] The resident device of the terminal in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0295] The resident device of the terminal provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 3 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0296] As shown in Figure 6, an embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, wherein the memory 602 stores a program or instruction that can be run on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps of the embodiment of the resident method for a terminal on the terminal side, and can achieve the same technical effect. When the communication device 600 is a network-side device, the program or instruction is executed by the processor 601 to implement the various steps of the embodiment of the resident method for a terminal on the network-side device side, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0297] The present application also provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG2 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG7 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0298] The terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of the processor 710.

[0299] Those skilled in the art will appreciate that the terminal 700 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 710 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG7 does not constitute a limitation of the terminal. The terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0300] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0301] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 701 may transmit the data to the processor 710 for processing. Furthermore, the RF unit 701 may send uplink data to the network-side device. Typically, the RF unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0302] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0303] Processor 710 may include one or more processing units. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0304] The processor 710 is configured to determine single residency or dual residency when the terminal is registered in the first mobile communication system and in the second mobile communication system;

[0305] The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system;

[0306] The dual camping includes camping on the first RAT and camping on the second RAT.

[0307] Optionally, the processor 710 is specifically configured to perform at least one of the following:

[0308] Determine single dwell or double dwell based on signal quality;

[0309] Single residency or dual residency is determined based on the instruction information sent by the network side device.

[0310] Optionally, the processor 710 is specifically configured to:

[0311] If signal quality meets a first condition, dual camp on a first preset RAT and a second preset RAT, wherein the first preset RAT is the first RAT or the second RAT, the second preset RAT is the second RAT or the first RAT, and the first preset RAT and the second preset RAT are different;

[0312] The signal quality satisfies the first condition, including at least one of the following:

[0313] The cell signal quality of the first preset RAT is less than or equal to a first value;

[0314] The cell signal quality of the second preset RAT is greater than or equal to a second value.

[0315] Optionally, the processor 710 is further configured to perform at least one of the following:

[0316] If the signal quality does not meet the first condition, camping on the first preset RAT;

[0317] In the case of dual residency, if the signal quality meets the second condition, stop residency in the second preset RAT;

[0318] The signal quality satisfies the second condition, including at least one of the following:

[0319] The cell signal quality of the first preset RAT is greater than or equal to a third value;

[0320] The cell signal quality of the second preset RAT is less than or equal to a fourth value.

[0321] Optionally, the processor 710 is specifically configured to:

[0322] If the signal quality continuously satisfies the first condition within a first preset time, dual camping is performed on the first preset RAT and the second preset RAT.

[0323] Optionally, the processor 710 is specifically configured to:

[0324] If the signal quality continues to meet the second condition within a second preset time, stop residing in the second preset RAT.

[0325] Optionally, the radio frequency unit 701 is configured to:

[0326] Sending a request message to the network side device, where the request message indicates one of the following:

[0327] The terminal desires dual resident;

[0328] The terminal desires single residency;

[0329] The terminal desires a single-resident RAT.

[0330] Optionally, the processor 710 is further configured to perform at least one of the following:

[0331] Do not perform inter-RAT cell reselection, or, if inter-RAT cell reselection conditions are met, perform inter-RAT cell reselection and reside only on the reselected RAT;

[0332] Perform cell reselection within each RAT;

[0333] Receiving system messages in each RAT, or receiving system messages only in a predetermined RAT;

[0334] Receive short messages in every RAT, or receive short messages only in a preset RAT.

[0335] Optionally, the processor 710 is further configured to:

[0336] In the case of camping on the reselected RAT alone and not moving out of the tracking area or registration area of ​​the reselected RAT, a tracking area update procedure or a registration area update procedure is initiated.

[0337] Optionally, the processor 710 is further configured to:

[0338] If the user moves out of the tracking area and the registration area, the tracking area update process and the registration area update process are executed;

[0339] or,

[0340] Execute the tracking area update process and / or registration area update process according to the location update period configured by the network side device.

[0341] Optionally, the processor 710 is specifically configured to:

[0342] Determining a target RAT based on the location update period and the signal quality of the RAT, and initiating a tracking area update procedure and / or a registration area update procedure to the target RAT;

[0343] or,

[0344] Based on the location update period, a tracking area update procedure and / or a registration area update procedure is initiated to the RAT indicated by the network side device.

[0345] Optionally, the processor 710 is further configured to: when the user moves out of the tracking area or the registration area, perform one of the following:

[0346] If the signal quality of the RAT corresponding to the area not moved out is greater than or equal to the fifth value, the tracking area update process or the registration area update process is not performed;

[0347] If the RAT corresponding to the area being moved out is the RAT indicated by the network side device, the tracking area update process or the registration area update process is executed.

[0348] Optionally, the processor 710 is further configured to perform at least one of the following:

[0349] monitoring a paging message in the first RAT or the second RAT according to preset discontinuous reception DRX configuration information, where the preset DRX configuration information is only used in the case where the terminal is dual-resident;

[0350] monitoring the paging message in both the first RAT and the second RAT;

[0351] When one RAT monitors a paging message, the other RAT stops monitoring the paging message.

[0352] Optionally, the processor 710 is further configured to perform at least one of the following:

[0353] In a case where the paging message is monitored, determining a RAT for performing an RRC connection process according to the paging message;

[0354] The RAT for performing the RRC connection process is determined based on the cell signal quality.

[0355] Optionally, the processor 710 is specifically configured to perform at least one of the following:

[0356] If the paging message carries first indication information, initiating an RRC connection process in the RAT indicated by the first indication information;

[0357] If the paging message carries the second indication information, initiating an RRC connection process in the preset RAT;

[0358] If the paging message does not carry the second indication information, an RRC connection process is initiated in the RAT that receives the paging message.

[0359] Optionally, the processor 710 is specifically configured to:

[0360] The RRC connection procedure is performed on a RAT whose signal quality meets a preset quality threshold, or the RRC connection procedure is performed on a RAT with a suitable cell.

[0361] Optionally, the processor 710 is further configured to perform at least one of the following:

[0362] Set the RRC connection cause value to called terminal access;

[0363] Set the access type of the access attempt corresponding to the RRC connection to 0.

[0364] Optionally, the processor 710 is specifically configured to:

[0365] In the case of an RRC connected state, receiving an RRC connection release message sent by the network side device;

[0366] Dual-residence is determined, or a single-residence RAT is determined, according to the third indication information carried in the RRC connection release message.

[0367] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the terminal resident method of the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0368] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG3 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0369] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 8, the network-side device 800 includes an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. Antenna 81 is connected to radio frequency device 82. In the uplink direction, radio frequency device 82 receives information via antenna 81 and sends the received information to baseband device 83 for processing. In the downlink direction, baseband device 83 processes the information to be transmitted and sends it to radio frequency device 82. Radio frequency device 82 processes the received information and then sends it through antenna 81.

[0370] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83 , which includes a baseband processor.

[0371] The baseband device 83 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 8, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the program in the memory 85 and execute the network side device operations shown in the above method embodiment.

[0372] The network side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0373] Specifically, the network side device 800 of an embodiment of the present invention also includes: instructions or programs stored in the memory 85 and executable on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by the modules shown in FIG5 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0374] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by the processor, the various processes of the embodiment of the terminal resident method are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0375] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0376] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned terminal resident method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0377] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0378] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned terminal residency method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0379] An embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the terminal residence method applied to the terminal as described above, and the network side device can be used to execute the steps of the terminal residence method applied to the network side device as described above.

[0380] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0381] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0382] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A terminal resident method, comprising: When the terminal is registered in the first mobile communication system and in the second mobile communication system, determining single camping or dual camping; The single residency includes: residing in a first radio access technology RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system; The dual camping includes camping on the first RAT and camping on the second RAT.

2. The method according to claim 1, wherein: The determining of single residency or dual residency includes at least one of the following: Determine single dwell or double dwell based on signal quality; Single residency or dual residency is determined according to the instruction information sent by the network side device.

3. The method according to claim 2, wherein: The determining of single dwell or double dwell according to the signal quality includes: When the signal quality satisfies a first condition, dual-camping on a first preset RAT and a second preset RAT, wherein the first preset RAT is the first RAT or the second RAT, the second preset RAT is the second RAT or the first RAT, and the first preset RAT and the second preset RAT are different; The signal quality satisfies the first condition, including at least one of the following: The cell signal quality of the first preset RAT is less than or equal to a first value; The cell signal quality of the second preset RAT is greater than or equal to a second value.

4. The method according to claim 2 or 3, wherein: The determining of single dwell or dual dwell according to the signal quality further includes at least one of the following: When the signal quality does not meet the first condition, residing only in the first preset RAT; When the terminal is in dual resident mode, if the signal quality satisfies a second condition, stopping resident mode in the second preset RAT; The signal quality satisfies the second condition, including at least one of the following: The cell signal quality of the first preset RAT is greater than or equal to a third value; The cell signal quality of the second preset RAT is less than or equal to a fourth value.

5. The method according to claim 3, wherein: The dual-residence in the first preset RAT and the second preset RAT when the signal quality satisfies the first condition includes: If the signal quality continues to meet the first condition within a first preset time, dual camping on the first preset RAT and the second preset RAT.

6. The method according to claim 4, wherein: If the signal quality satisfies the second condition, stopping to reside in the second preset RAT includes: If the signal quality continues to meet the second condition within the second preset time, the terminal stops The second preset RAT resides.

7. The method according to claim 1 or 2, further comprising: Sending terminal demand information to the network side device, where the demand information is used to indicate one of the following: The terminal desires dual resident; The terminal desires single-residence; The terminal desires a single-residence RAT.

8. The method according to claim 1 or 2, wherein: In the case of determining dual dwell, the method further includes at least one of the following: The terminal does not perform cell reselection between RATs, or, if a cell reselection condition between RATs is met, performs cell reselection between RATs, and the terminal resides in the reselected RAT alone; Perform cell reselection within each RAT; The terminal receives the system message in each RAT, or receives the system message only in a preset RAT; The terminal receives the short message in each RAT, or receives the short message only in a preset RAT.

9. The method according to claim 8, further comprising: When the terminal resides solely in the reselected RAT and the terminal has not moved out of the tracking area or registration area of ​​the reselected RAT, a tracking area update procedure or a registration area update procedure is initiated.

10. The method according to claim 1 or 2, wherein: In the event of dual dwell being determined, the method further comprises: If the terminal moves out of the tracking area and the registration area, the tracking area update process and the registration area update process are executed; or, Execute the tracking area update process and / or the registration area update process according to the location update period configured by the network side device.

11. The method according to claim 10, wherein: The performing of the tracking area update process and / or the registration area update process according to the location update period configured by the network side device includes: The terminal determines the target RAT based on the location update period and the signal quality of the RAT, and initiates a tracking area update procedure and / or a registration area update procedure to the target RAT; or, Based on the location update period, the terminal initiates a tracking area update procedure and / or a registration area update procedure to the RAT indicated by the network side device.

12. The method according to any one of claims 1, 2, 8 and 10, wherein: In the event of dual dwell being determined, the method further comprises: When the terminal moves out of the tracking area or out of the registration area, perform one of the following: If the signal quality of the RAT corresponding to the area that the terminal has not moved out of is greater than or equal to the fifth value, the tracking area update process or the registration area update process is not performed; If the RAT corresponding to the area where the terminal moves out is the RAT indicated by the network side device, a tracking area update process or a registration area update process is executed.

13. The method according to any one of claims 1, 2, 8, 10, and 12, wherein: In the case of determining dual residency, the method further includes at least one of the following: Monitoring a paging message in the first RAT or the second RAT according to preset discontinuous reception DRX configuration information, wherein the preset DRX configuration information is only used in the case where the terminal is dual-resident; Monitoring the paging message in both the first RAT and the second RAT; When one RAT monitors a paging message, the other RAT stops monitoring the paging message.

14. The method according to claim 13, further comprising at least one of the following: In case of monitoring the paging message, determining the RAT for executing the radio resource control RRC connection process according to the paging message; The RAT for performing the RRC connection process is determined according to the cell signal quality.

15. The method according to claim 14, wherein: The determining, according to the paging message, a RAT for performing an RRC connection process includes at least one of the following: If the paging message carries first indication information, initiating an RRC connection process in the RAT indicated by the first indication information; If the paging message carries the second indication information, initiating an RRC connection process in the preset RAT; If the paging message does not carry the second indication information, an RRC connection process is initiated in the RAT that receives the paging message.

16. The method according to claim 14, wherein: The determining of the RAT for performing the RRC connection process according to the cell signal quality includes: The RRC connection procedure is performed on a RAT whose signal quality meets a preset quality threshold, or the RRC connection procedure is performed on a RAT having a suitable cell.

17. The method according to claim 14, further comprising at least one of the following: Set the RRC connection reason value to called terminal access; The access type of the access attempt corresponding to the RRC connection is set to 0.

18. The method according to claim 2, wherein: The determining of single residency or dual residency according to the indication information sent by the network side device includes: When the terminal is in an RRC connected state, receiving an RRC connection release message sent by the network side device; According to the third indication information carried by the RRC connection release message, dual retention is determined, or a single retention RAT is determined.

19. A terminal resident method, comprising: The network side device sends indication information to the terminal, where the indication information is used to instruct the terminal to single-reside or dual-reside; The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in a first mobile communication system, and the second RAT is a RAT in a second mobile communication system; The dual camping includes camping on the first RAT and camping on the second RAT.

20. The method according to claim 19, wherein: The sending the instruction information to the terminal includes: Sending an RRC connection release message to the terminal, wherein the RRC connection release message carries third indication information. The third indication information is used to instruct the terminal to perform dual-residence, or the terminal to perform single-residence on the RAT.

21. The method according to claim 19, further comprising: sending a paging message in a first RAT and a second RAT; or, Sending a paging message in one of the first RAT and the second RAT; or, The paging message is preferentially sent in one of the first RAT and the second RAT. If the paging fails, the paging message is sent in the other RAT.

22. The method according to claim 21, wherein: The paging message carries first indication information, where the first indication information is used to indicate the RAT for the terminal to initiate an RRC connection process; or, The paging message carries second indication information, where the second indication information is used to instruct the terminal to initiate an RRC connection process in a preset RAT.

23. The method according to claim 19, further comprising: In case that the terminal is dual-resident, a tracking area configuration and / or a registration area configuration is sent to the terminal.

24. The method according to claim 19, further comprising: Receive demand information sent by the terminal; Determine the instruction information according to the demand information; The requirement information is used to indicate one of the following: The terminal desires dual resident; The terminal desires single-residence; The terminal desires a single-residence RAT.

25. A resident device of a terminal, comprising: A first determination module, configured to determine single residency or dual residency when the terminal is registered in the first mobile communication system and in the second mobile communication system; The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in the first mobile communication system, and the second RAT is a RAT in the second mobile communication system; The dual camping includes camping on the first RAT and camping on the second RAT.

26. A resident device of a terminal, comprising: A first sending module, used for sending indication information to a terminal, where the indication information is used for indicating whether the terminal is single-resident or dual-resident; The single residency includes: residing in a first RAT or residing in a second RAT, the first RAT is a RAT in a first mobile communication system, and the second RAT is a RAT in a second mobile communication system; The dual camping includes camping on the first RAT and camping on the second RAT.

27. A terminal, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the terminal resident method according to any one of claims 1 to 18 are implemented.

28. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the terminal residence method as described in any one of claims 19 to 24 are implemented.

29. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the terminal residency method as described in any one of claims 1 to 18, or implements the steps of the terminal residency method as described in any one of claims 19 to 24.

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