User equipment capability notification method and apparatus, and communication device and storage medium

Abstract

The present application relates to the technical field of wireless communications, and relates to a user equipment capability notification method and apparatus, and a communication device and a storage medium. The method comprises: a user equipment receiving a system message sent by a second network to which a second subscriber identity module card belongs; and when a first subscriber identity module card of the user equipment is in a connected state and the second subscriber identity module card of the user equipment is about to enter the connected state, on the basis of first indication information in the system message, during the process of performing radio resource control (RRC) establishment or recovery on the second subscriber identity module card, sending to the second network second indication information used for indicating that the capability of the user equipment is limited. By using the present method, first indication information for allowing a user equipment to report, during RRC establishment or recovery, the capability of the user equipment being limited can be carried in a system message issued by a second network, such that the user equipment can actively report, during the RRC establishment or recovery, the capability of the user equipment being limited, thereby implementing state synchronization of the user equipment and the second network in advance, and reducing the service delay of subscriber identity module cards in a dual-card dual-pass user equipment. (FIG. 2)

Description

Terminal capability notification method, device, communication equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202311049226.6, filed on August 18, 2023, entitled “Terminal Capability Notification Method, Apparatus, Communication Equipment and Storage Medium,” and the entire contents of this Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of wireless communication technologies, and in particular to a terminal capability notification method, apparatus, communication device, and storage medium. Background Art

[0004] Dual-SIM dual-pass terminals can connect to two networks simultaneously using two user identification cards. In the current dual-SIM dual-pass terminal standard, the two user identification cards in a dual-SIM dual-pass terminal share front-end RF resources. Therefore, when one user identification card is in the connected state and the other user identification card also enters the connected state, terminal resource preemption occurs. If the terminal originally in the connected state occupies all transmit and receive resources, the terminal's capabilities will be reduced, which is inconsistent with the maximum capabilities reported by the terminal during registration. This will cause the terminal and the network to be out of sync in their understanding of the terminal's actual capabilities, causing packet loss and link failure during data transmission.

[0005] Currently, when a dual-SIM dual-pass terminal establishes a connection with a user identification card and detects a front-end resource conflict, the terminal will passively report the terminal capability change to the network and complete RRC (Radio Resource Control) reconfiguration, reducing the terminal capability before establishing a connection with the other card. This will cause a large delay for the service of the other card.

[0006] Summary of the Invention

[0007] Based on this, it is necessary to provide a terminal capability notification method, apparatus, communication device and storage medium that can reduce the service delay of the user identification card in a dual-SIM dual-pass terminal to address the above technical problems.

[0008] In a first aspect, the present application provides a terminal capability notification method, applied to a terminal, the method comprising: receiving a system message sent by a second network to which a second user identification card of the terminal belongs; when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, based on the first indication information in the system message, during the process of establishing or restoring radio resource control RRC for the second user identification card, sending second indication information to the second network; wherein the second indication information is used to indicate that the terminal capability is limited.

[0009] In one embodiment, sending the second indication information to the second network includes: sending an RRC establishment or recovery completion message for the second subscriber identity card to the second network; wherein the RRC establishment or recovery completion message carries the second indication information.

[0010] In one embodiment, the method further includes: receiving a first RRC reconfiguration message sent by the second network when both the first user identification card and the second user identification card are in a connected state; and sending a restricted capability set of the terminal to the second network based on third indication information in the first RRC reconfiguration message; wherein the restricted capability set of the terminal is used for the second network to determine whether to configure the terminal capabilities.

[0011] In one embodiment, sending the restricted capability set of the terminal to the second network includes: sending a terminal assistance message carrying the restricted capability set of the terminal to the second network.

[0012] In one embodiment, the method further includes: when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, receiving a second RRC reconfiguration message sent by the first network to which the first user identification card belongs; when both the first user identification card and the second user identification card are in a connected state, sending the terminal's restricted capability set to the first network based on the fourth indication information in the second RRC reconfiguration message.

[0013] In one embodiment, sending the restricted capability set of the terminal to the first network includes: sending a terminal assistance message carrying the restricted capability set of the terminal to the first network.

[0014] In one embodiment, the restriction capability set includes at least one of a current restriction capability and a future potential restriction capability of the terminal.

[0015] In one embodiment, the restricted capability set includes at least one of potential band combination conflict, multiple-input multiple-output (MIMO) capability, and measurement period capability.

[0016] In one embodiment, the first RRC reconfiguration message carries a timing duration, and sends a terminal assistance message carrying a restricted capability set of the terminal to the second network, including: sending a terminal assistance message carrying a restricted capability set of the terminal to the second network according to the timing duration.

[0017] In one embodiment, a terminal assistance message carrying a restricted capability set of a terminal is sent to a second network according to a timing duration, including: sending a terminal assistance message carrying a restricted capability set of a terminal to the second network and initializing a timer; if the timer does not reach the timing duration, it is prohibited to send the terminal assistance message carrying a restricted capability set of a terminal to the second network again.

[0018] In one embodiment, a terminal assistance message carrying a set of restricted capabilities of the terminal is sent to the second network according to a timing duration, including: if a new timing duration sent by the second network is received when the timer has not reached the timing duration, a terminal assistance message carrying a set of restricted capabilities of the terminal is sent to the second network according to the new timing duration.

[0019] In one embodiment, the second RRC reconfiguration message carries a timing duration, and sends a terminal assistance message carrying a restricted capability set of the terminal to the first network, including: sending a terminal assistance message carrying a restricted capability set of the terminal to the first network according to the timing duration.

[0020] In one embodiment, a terminal assistance message carrying a restricted capability set of a terminal is sent to a first network according to a timing duration, including: sending a terminal assistance message carrying a restricted capability set of a terminal to the first network and initializing a timer; if the timer does not reach the timing duration, it is prohibited to send a terminal assistance message carrying a restricted capability set of a terminal to the first network again.

[0021] In one embodiment, a terminal assistance message carrying a set of restricted capabilities of the terminal is sent to the first network according to a timing duration, including: if a new timing duration sent by the first network is received when the timer has not reached the timing duration, a terminal assistance message carrying a set of restricted capabilities of the terminal is sent to the first network according to the new timing duration.

[0022] In the second aspect, the present application provides a terminal capability notification method, which is applied to the second network to which the second user identification card of the terminal belongs, the method comprising: sending a system message to the terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the RRC establishment or recovery process of the second user identification card; when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter the connected state, receiving the second indication information sent by the terminal based on the first indication information in the system message; wherein the second indication information is used to indicate that the terminal capability is limited.

[0023] In one embodiment, the receiving terminal sends the second indication information based on the first indication information in the system message, including: the receiving terminal sends an RRC establishment or recovery completion message for the second user identification card based on the first indication information in the system message; wherein the RRC establishment or recovery completion message carries the second indication information.

[0024] In one embodiment, the method further includes: sending a first RRC reconfiguration message to the terminal when both the first user identification card and the second user identification card are in a connected state; receiving a restricted capability set of the terminal sent by the terminal based on the third indication information in the first RRC reconfiguration message; wherein the restricted capability set of the terminal is used for the second network to determine whether to configure the terminal capabilities.

[0025] In one embodiment, the terminal restriction capability set sent by the receiving terminal based on the third indication information in the first RRC reconfiguration message includes: a terminal assistance message sent by the receiving terminal based on the third indication information in the first RRC reconfiguration message; wherein the terminal assistance message carries the terminal restriction capability set.

[0026] In one embodiment, the restriction capability set includes at least one of a current restriction capability and a future potential restriction capability of the terminal.

[0027] In one embodiment, the restricted capability set includes at least one of potential band combination conflict, multiple-input multiple-output (MIMO) capability, and measurement period capability.

[0028] In one embodiment, the first RRC reconfiguration message carries a timing duration, and the method further includes: if a terminal assistance message carrying a terminal restriction capability set is received from a terminal when the timer does not reach the timing duration, then no response is given to the terminal assistance message.

[0029] In the third aspect, the present application also provides a terminal capability notification device, which includes: a first receiving module for receiving a system message sent by a second network to which the second user identification card of the terminal belongs; a first sending module for sending a second indication information to the second network during the process of establishing or restoring the wireless resource control RRC of the second user identification card based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

[0030] In a fourth aspect, the present application also provides a terminal capability notification device, which includes: a second sending module for sending a system message to the terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the RRC establishment or recovery process of the second user identification card; a second receiving module for receiving the second indication information sent by the terminal based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter the connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

[0031] In a fifth aspect, the present application also provides a communication device, which includes: a transmitter, a receiver, a processor and a memory, the memory storing a computer program; the receiver is used to receive a system message sent by a second network to which the second user identification card of the terminal belongs; the transmitter is used to send second indication information to the second network based on the first indication information in the system message during the process of establishing or restoring the radio resource control RRC of the second user identification card when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter the connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

[0032] In the sixth aspect, the present application also provides a communication device, which includes: a transmitter, a receiver, a processor and a memory, and the memory stores a computer program; the transmitter is used to send a system message to the terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the RRC establishment or recovery process of the second user identification card; the receiver is used to receive the second indication information sent by the terminal based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter the connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

[0033] In a seventh aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method of the first aspect or the second aspect mentioned above are implemented.

[0034] In an eighth aspect, the present application further provides a computer program product, comprising a computer program, which implements the steps of the method of the first aspect or the second aspect when executed by a processor.

[0035] The above-mentioned terminal capability notification method, device, communication equipment and storage medium, the terminal receives a system message sent by the second network to which the second user identification card belongs, and then, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, based on the first indication information in the system message, during the process of establishing or restoring the radio resource control RRC for the second user identification card, sends a second indication information for indicating that the terminal capability is limited to the second network. In the system message sent by the second network to the terminal, the present application carries the first indication information allowing the terminal to report the terminal capability limitation during the RRC establishment or recovery process, so that the terminal can actively report the terminal capability limitation during the RRC establishment or recovery process, realize the state synchronization of the terminal and the second network in advance, and reduce the service delay of the user identification card in the dual-card dual-pass terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is an application scenario diagram of a terminal capability notification method according to an embodiment;

[0037] FIG2 is a schematic diagram of a process of a terminal capability notification method according to an embodiment;

[0038] FIG3 is a schematic diagram of a process for reporting a set of restricted capabilities of a terminal to a second network in one embodiment;

[0039] FIG4 is a schematic diagram of a process for reporting a set of restricted capabilities of a terminal to a first network in one embodiment;

[0040] FIG5 is a schematic flow chart of a method for notifying terminal capabilities in another embodiment;

[0041] FIG6 is a schematic diagram of a process for receiving a restricted capability set of a terminal in one embodiment;

[0042] FIG7 is a schematic flow chart of a method for notifying terminal capabilities in yet another embodiment;

[0043] FIG8 is a structural block diagram of a terminal capability notification device according to an embodiment;

[0044] FIG9 is a structural block diagram of a terminal capability notification device according to another embodiment;

[0045] FIG10 is a structural block diagram of a terminal capability notification device according to another embodiment;

[0046] FIG11 is a structural block diagram of another terminal capability notification device according to an embodiment;

[0047] FIG12 is a structural block diagram of another terminal capability notification device in another embodiment. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0049] The terminal capability notification method provided in the embodiment of the present application can be applied in the application environment shown in Figure 1. Among them, the dual-card dual-pass terminal 101 can be connected to the first network 102 and the second network 103 at the same time through two user identification cards, that is, the two user identification cards can be used at the same time without affecting each other. Specifically, the first network 102 and the second network 103 can both send a system message to the dual-card dual-pass terminal 101, wherein the system message carries an indication information allowing the terminal to report the limited terminal capability during the RRC establishment or recovery process, and then the dual-card dual-pass terminal 101 can send an RRC establishment or recovery completion message carrying the indication information of the limited terminal capability to the first network 102 and the second network 103 during the RRC establishment or recovery process. In addition, the first network 102 and the second network 103 can also send an RRC reconfiguration message to the dual-card dual-channel terminal 101, wherein the RRC reconfiguration message carries indication information allowing the terminal to report the terminal restriction capability set, and then the dual-card dual-channel terminal 101 can report the terminal restriction capability set to the first network 102 and the second network 103 respectively through UAI (UE Assistance Information, terminal assistance message), so that the first network 102 and the second network 103 can determine whether to configure the terminal capabilities and how to configure the terminal capabilities.

[0050] The dual-SIM dual-pass terminal 101 may be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices may be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, and the like. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, and the like. The first network 102 and the second network 103 may be a 4G (4th Generation Mobile Communication Technology) network or a 5G (5th Generation Mobile Communication Technology) network, i.e., the two user identification cards of the dual-SIM dual-pass terminal 101 may respectively access LTE (Long Term Evolution) and NR (New Radio) cells.

[0051] In one embodiment, as shown in FIG2 , a terminal capability notification method is provided, which is applied to a terminal and includes the following steps:

[0052] S201: Receive a system message sent by a second network to which a second subscriber identification card of a terminal belongs.

[0053] The terminal is a dual-SIM dual-pass terminal. Its two user identification cards (UICs)—a first and a second—can be used simultaneously without interfering with each other. The first UIC accesses the first network, while the second UIC accesses the second network. The first and second UICs share front-end radio frequency resources.

[0054] The terminal receives a system message sent by a second network to which the second user identification card belongs. The system message carries first indication information, and the first indication information is used to indicate that the terminal can report limited terminal capability to the second network during an RRC establishment or recovery process.

[0055] Specifically, the terminal may receive a system message sent by the second network at any time after registering with the second network. This embodiment does not limit the time of receiving the system message. The system message can be a broadcast system message, such as a broadcast SIB1 (System Information Block #1), or a non-broadcast system message, such as an on-demand SI (on-demand System Information). Compared with the broadcast SIB1, the on-demand SI can save base station power consumption and signaling length. For example, the second network allocates a specified random access preamble index in the system message for the terminal to carry in the random access PRACH request, and then the second network responds in the MSG2RAR message and sends a system message carrying the first indication information to the terminal.

[0056] S202, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, based on the first indication information in the system message, during the process of establishing or recovering the radio resource control RRC for the second user identification card, send second indication information to the second network.

[0057] The first user identification card is in a connected state, indicating that connections have been established between the terminal and the base station, and between the base station and the core network. The terminal can perform data transmission based on the first user identification card at any time, and no delay is required to establish the connection state.

[0058] The second user identification card is about to enter the connected state, which can be from the deactivated state to the connected state, or from the idle state to the connected state. Among them, the second user identification card enters the connected state from the deactivated state, indicating that no connection is established between the terminal and the base station, and a connection is established for the terminal between the base station and the core network. Once there is data that needs to be sent to the terminal, the base station will send a paging so that the terminal can quickly establish a connection with the base station after receiving it, and enter the connected state from the deactivated state, and then data can be transmitted based on the second user identification card. The second user identification card enters the connected state from the idle state, indicating that no connection is established for the terminal between the terminal and the base station, and between the base station and the core network. If there is data that needs to be sent to the terminal, or the terminal needs to send data, it takes a relatively long delay to enter the connected state from the idle state.

[0059] When the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state from a deactivated state or an idle state, the terminal monitors the paging sent by the second network at a regular interval, and during the RRC establishment or recovery process of the second user identification card, the terminal sends an RRC establishment or recovery request to the second network based on the received system message, and then receives relevant information required for RRC establishment or recovery returned by the second network based on the RRC establishment or recovery request. Further, the terminal sends second indication information to the second network based on the first indication information in the system message, wherein the second indication information is used to indicate that the terminal capability is limited.

[0060] It is understandable that because the first user identification card and the second user identification card share front-end radio frequency resources, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, the terminal's capabilities are limited. Specifically, the first network may have occupied all radio frequency capabilities. In this case, the terminal needs to release some radio frequency capabilities to establish a connection with the second network; the first network may also have occupied some radio frequency capabilities. In this case, no conflict will occur when the terminal establishes a connection with the second network. This embodiment specifically uses the second case as an example for explanation.

[0061] In an optional embodiment, an RRC establishment or recovery completion message for the second subscriber identity card is sent to the second network; wherein the RRC establishment or recovery completion message carries the second indication information.

[0062] For example, based on the first indication information in the system message, the terminal sends an RRC establishment or recovery completion message (MSG5) for the second subscriber identity card to the second network, where the RRC establishment or recovery completion message carries second indication information indicating that the terminal capability is limited.

[0063] It should be noted that if the second user identification card enters the connected state from the deactivated state, the terminal sends an RRC recovery completion message carrying the second indication information to the second network during the RRC recovery process of the second user identification card; if the second user identification card enters the connected state from the idle state, the terminal sends an RRC establishment completion message carrying the second indication information to the second network during the RRC establishment process of the second user identification card.

[0064] In the above solution, the terminal receives a system message sent by the second network to which the second user identification card belongs. Then, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, based on the first indication information in the system message, during the process of establishing or restoring radio resource control (RRC) for the second user identification card, the terminal sends second indication information for indicating that the terminal capability is limited to the second network. In this embodiment, the system message sent by the second network to the terminal carries the first indication information allowing the terminal to report the limited terminal capability during the RRC establishment or recovery process, so that the terminal can actively report the limited terminal capability during the RRC establishment or recovery process, thereby achieving state synchronization between the terminal and the second network in advance and reducing the service delay of the user identification card in the dual-SIM dual-pass terminal.

[0065] To avoid conflicts when the second network configures terminal capabilities, based on the above embodiment, in one embodiment, some potentially restricted terminal capabilities may be reported to the second network in advance based on third indication information in the first RRC reconfiguration message that allows the terminal to report a restricted capability set. As shown in FIG3 , the terminal capability notification method may further include:

[0066] S301: When both a first subscriber identity card and a second subscriber identity card are in a connected state, a first RRC reconfiguration message sent by a second network is received.

[0067] The terminal completes the RRC establishment or recovery process for the second user identity card, and the second user identity card also enters the connected state. In this case, the terminal receives a first RRC reconfiguration message for the second user identity card sent by the second network. The first RRC reconfiguration message carries third indication information, and the third indication information is used to indicate that the terminal can report the terminal's restricted capability set.

[0068] S302: Send a restricted capability set of the terminal to the second network based on the third indication information in the first RRC reconfiguration message.

[0069] The terminal sends a first RRC reconfiguration complete message to the second network. Further, the terminal may proactively send a restricted capability set of the terminal to the second network based on the third indication information. The restricted capability set of the terminal is used for the second network to determine whether to configure the terminal capabilities. Specifically, the restricted capability set of the terminal is used for the second network to determine whether to configure the terminal capabilities and how to configure the terminal capabilities.

[0070] In an optional embodiment, a terminal assistance message carrying the restricted capability set of the terminal is sent to the second network.

[0071] The terminal assistance message is UAI. Through the terminal assistance message, the terminal can inform the network of its internal state so that the network side can perform resource scheduling to better match the specific state of the terminal. In this embodiment, the terminal can report the terminal's restricted capability set to the second network through UAI.

[0072] It's understandable that all communication processes are centrally scheduled by the base station. The base station can only correctly configure terminal capabilities after knowing the terminal's capabilities. If the terminal supports a certain function, the base station can configure it for the terminal. Conversely, if the terminal does not support a function, the base station cannot configure it for the terminal.

[0073] In an optional embodiment, the restricted capability set reported by the terminal includes at least one of potential frequency band combination conflict, multiple-in multiple-out (MIMO) capability, and measurement period capability.

[0074] Optionally, the restricted capability set includes at least one of the terminal's current restricted capabilities and future potential restricted capabilities. In other words, the terminal can not only report the terminal's currently restricted terminal capabilities to the second network, but also report the terminal's capabilities that may be restricted in the future to the second network. By reporting the future restricted capabilities to the second network in advance, the impact on the service establishment delay of the second user identification card in the future can be reduced.

[0075] For potential frequency band combination conflicts, the reported future potential restricted capabilities are represented by the IE definition of the frequency band combination conflict list. For example, the second network resides in the N78 frequency band, and the first user identification card resides in the N1 frequency band. Currently, the N1 and N78 frequency band combination does not conflict, but the terminal cannot support both N78 and N79. Therefore, the terminal can report N78 and N79, which may conflict in the future, as future potential restricted capabilities to the second network. This prevents the second network from reconfiguring the first user identification card's network to N79 during subsequent RRC reconfiguration, thereby avoiding conflicts.

[0076] Terminal capabilities are categorized into different levels of capabilities. For example, specific terminal capabilities apply to all supported carriers and carrier combinations. Alternatively, carrier-combination-level capabilities apply to each carrier combination, while carrier-level capabilities also apply to each carrier. Terminal capabilities may include the maximum uplink and downlink transmission rates of the terminal's service channels, the number of MIMO layers supported by the terminal's service channels (i.e., MIMO capabilities), and the highest-order modulation scheme supported by the terminal's service channels.

[0077] The measurement period capability refers to the ability of a terminal to measure the signal level or signal quality of a cell, generate a measurement report, and send the measurement report to the network at a certain period.

[0078] The restricted capability set may further include CC (Component Carrier) capability or CG (Cell Group) capability, etc., which is not limited in this embodiment.

[0079] In this embodiment, when the first user identification card and the second user identification card are both in a connected state, the terminal receives the first RRC reconfiguration message sent by the second network, and then sends the terminal's restricted capability set to the second network based on the third indication information in the first RRC reconfiguration message. It can be understood that if the terminal can actively report terminal capabilities that may be affected in the future (such as frequency band combination conflicts), terminal capability conflicts caused by subsequent RRC reconfiguration or RRC recovery can be avoided, thereby avoiding the introduction of additional service delays. In other words, the terminal reports the restricted capability set in the connection reconfiguration for the second user identification card, so that the second network can decide whether to reconfigure the terminal's wireless resources, thereby achieving better state synchronization between the terminal and the second network, effectively avoiding packet loss and link failure during data transmission, and actively reporting the terminal's current restricted capabilities and future restricted capabilities, which can further reduce the impact on the service establishment delay of the second user identification card in the future.

[0080] As an optional implementation manner in this embodiment, the first RRC reconfiguration message further carries the timing duration of the timer, for example, the timing duration of the timer is carried in the other config message.

[0081] The terminal sends a terminal assistance message carrying the restricted capability set of the terminal to the second network according to the timing duration.

[0082] For example, after sending a terminal assistance message carrying a restricted capability set of the terminal once, the terminal starts a timer and waits for the timer to time out before sending the terminal assistance message carrying a restricted capability set of the terminal again. That is, the terminal assistance message carrying a restricted capability set of the terminal is sent according to the timed duration, thereby avoiding excessive signaling consumption.

[0083] Optionally, the terminal sends a terminal assistance message carrying the terminal's restricted capabilities set to the second network and initializes a timer. If the timer has not expired, the terminal is prohibited from sending terminal assistance messages carrying the terminal's restricted capabilities set to the second network again. In other words, after sending a terminal assistance message carrying the terminal's restricted capabilities set once, the terminal starts the timer. If the timer has not expired, the terminal is prohibited from sending terminal assistance messages to the second network again.

[0084] Furthermore, if the timer has not reached the timing duration, if a new timing duration is received from the second network, a terminal assistance message carrying the terminal's restricted capability set is sent to the second network according to the new timing duration. That is, if the timer has not expired, the second network sends the first RRC reconfiguration message again, and the first RRC reconfiguration message carries the new timer timing duration, the original timer stops automatically, and the terminal can send the terminal assistance message carrying the terminal's restricted capability set again and start a new timer.

[0085] It is understandable that if the terminal sends the terminal assistance message carrying the restricted capability set of the terminal again before the timer expires, the second network may not process it.

[0086] In this way, the timer can prevent the terminal from frequently reporting the restricted capability set, avoid large overhead and unnecessary RRC reconfiguration, and save resources and optimize the process while ensuring that the terminal can successfully report the restricted capability set to the second network.

[0087] In order to avoid conflicts when the first network to which the first subscriber identity card belongs subsequently performs RRC reconfiguration, based on the above embodiment, in one embodiment, the terminal's restricted capability set may also be reported to the first network. As shown in FIG4 , the terminal capability notification method may further include:

[0088] S401: When a first subscriber identity card of a terminal is in a connected state and a second subscriber identity card of the terminal is about to enter a connected state, a second RRC reconfiguration message sent by a first network to which the first subscriber identity card belongs is received.

[0089] Specifically, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is not in a connected state, for example, before the terminal receives a system message sent by the second network, the terminal receives a second RRC reconfiguration message for the first user identification card sent by the first network. The second RRC reconfiguration message carries fourth indication information, and the fourth indication information is used to indicate that the terminal can report the restricted capability set of the terminal.

[0090] S402: When both the first subscriber identity card and the second subscriber identity card are in a connected state, sending a restricted capability set of the terminal to the first network based on fourth indication information in the second RRC reconfiguration message.

[0091] The terminal completes the RRC establishment or recovery process for the second user identification card, and the second user identification card also enters the connected state. In this case, for example, after the second network determines whether to configure the terminal capabilities based on the restricted capability set reported by the terminal, the terminal sends a second RRC reconfiguration completion message to the first network. Furthermore, the terminal can actively send the terminal's restricted capability set to the first network based on the fourth indication information. The restricted capability set of the terminal is used for the first network to determine whether to configure the terminal capabilities. Specifically, the restricted capability set of the terminal is used for the first network to determine whether to configure the terminal capabilities and how to configure the terminal capabilities.

[0092] In an optional embodiment, a terminal assistance message carrying a restricted capability set of the terminal is sent to the first network.

[0093] The terminal assistance message is UAI. Through the terminal assistance message, the terminal can inform the network of its internal state so that the network side can perform resource scheduling to better match the specific state of the terminal. In this embodiment, the terminal can report the terminal's restricted capability set to the first network through UAI.

[0094] In an optional embodiment, the restricted capability set reported by the terminal includes at least one of potential frequency band combination conflict, multiple-in multiple-out (MIMO) capability, and measurement period capability.

[0095] Optionally, the restricted capability set includes at least one of the terminal's current restricted capabilities and future potential restricted capabilities. In other words, the terminal can not only report the terminal's currently restricted terminal capabilities to the first network, but also report the terminal's capabilities that may be restricted in the future to the first network. By reporting the future restricted capabilities to the first network in advance, the impact on the future service establishment delay of the first user identification card can be reduced.

[0096] For potential frequency band combination conflicts, the reported future potential restricted capabilities are represented by the IE definition of the frequency band combination conflict list. For example, the second network resides in the N78 frequency band, and the first user identification card resides in the N1 frequency band. Currently, the N1 and N78 frequency band combination does not conflict, but the terminal cannot support both N78 and N79. Therefore, the terminal can report N78 and N79, which may conflict in the future, as future potential restricted capabilities to the first network. This prevents the first network from reconfiguring the first user identification card's network to N79 during the subsequent RRC reconfiguration process, thereby avoiding conflicts.

[0097] Terminal capabilities are categorized into different levels of capabilities. For example, specific terminal capabilities apply to all supported carriers and carrier combinations. Alternatively, carrier-combination-level capabilities apply to each carrier combination, while carrier-level capabilities also apply to each carrier. Terminal capabilities may include the maximum uplink and downlink transmission rates of the terminal's service channels, the number of MIMO layers supported by the terminal's service channels (i.e., MIMO capabilities), and the highest-order modulation scheme supported by the terminal's service channels.

[0098] The measurement period capability refers to the ability of a terminal to measure the signal level or signal quality of a cell, generate a measurement report, and send the measurement report to the network at a certain period.

[0099] The restricted capability set may further include CC (Component Carrier) capability or CG (Cell Group) capability, etc., which is not limited in this embodiment.

[0100] In this embodiment, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, the terminal receives a second RRC reconfiguration message sent by the first network to which the first user identification card belongs. Then, when both the first user identification card and the second user identification card are in a connected state, the terminal sends the terminal's restricted capability set to the first network based on the fourth indication information in the second RRC reconfiguration message. The terminal reports the restricted capability set during the connection reconfiguration for the first user identification card, allowing the first network to decide whether to reconfigure the terminal's unlimited resources. This achieves better state synchronization between the terminal and the first network, effectively avoiding packet loss and link failure during data transmission. Furthermore, by actively reporting the terminal's current and future restricted capabilities, the impact on future service establishment delays on the first user identification card can be further reduced.

[0101] As an optional implementation manner in this embodiment, the second RRC reconfiguration message further carries the timing duration of the timer, for example, the timing duration of the timer is carried in the other config message.

[0102] The terminal sends a terminal assistance message carrying the terminal's restricted capabilities set to the first network according to a timed duration. For example, after sending a terminal assistance message carrying the terminal's restricted capabilities set once, the terminal starts a timer and waits for the timer to expire before sending the terminal assistance message carrying the terminal's restricted capabilities set again. That is, sending the terminal assistance message carrying the terminal's restricted capabilities set according to the timed duration avoids excessive signaling consumption.

[0103] Optionally, the terminal sends a terminal assistance message carrying the terminal's restricted capabilities set to the first network and initializes a timer. If the timer has not expired, the terminal is prohibited from sending terminal assistance messages carrying the terminal's restricted capabilities set to the first network again. In other words, after sending a terminal assistance message carrying the terminal's restricted capabilities set once, the terminal starts the timer. If the timer has not expired, the terminal is prohibited from sending terminal assistance messages to the first network again.

[0104] Furthermore, if the timer has not reached the timing duration, if a new timing duration is received from the first network, a terminal assistance message carrying the terminal's restricted capability set is sent to the first network according to the new timing duration. That is, if the timer has not expired, the first network again sends a second RRC reconfiguration message, and the second RRC reconfiguration message carries the new timer timing duration, the original timer stops automatically, and the terminal can send the terminal assistance message carrying the terminal's restricted capability set again and start a new timer.

[0105] It is understandable that if the terminal sends the terminal assistance message carrying the restricted capability set of the terminal again before the timer expires, the first network may not process it.

[0106] In this way, the timer can prevent the terminal from frequently reporting the restricted capability set, avoid large overhead and unnecessary RRC reconfiguration, and save resources and optimize the process while ensuring that the terminal can successfully report the restricted capability set to the first network.

[0107] In one embodiment, as shown in FIG5 , a terminal capability notification method is provided, which is applied to a second network to which a second subscriber identity card of the terminal belongs, and includes the following steps:

[0108] S501: Send a system message to a terminal.

[0109] The system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the process of establishing or restoring the RRC for the second subscriber identity card.

[0110] Specifically, the terminal is a dual-SIM dual-pass terminal in which two user identification cards (UICs)—a first UIC and a second UIC—can be used simultaneously without interfering with each other. The first UIC accesses a first network, while the second UIC accesses a second network. The first and second UICs share front-end radio frequency resources.

[0111] The second network sends a system message to the terminal, where the system message carries first indication information, and the first indication information is used to indicate that the terminal can report limited terminal capability to the second network during an RRC establishment or recovery process.

[0112] Specifically, after the terminal registers with the second network, the second network may send a system message to the terminal at any time. This embodiment does not limit the time of sending the system message. The system message can be a broadcast system message, such as a broadcast SIB1 (System Information Block #1), or a non-broadcast system message, such as an on-demand SI (on-demand System Information). Compared with the broadcast SIB1, the on-demand SI can save base station power consumption and signaling length. For example, the second network allocates a specified random access preamble index in the system message for the terminal to carry in the random access PRACH request, and then the second network responds in the MSG2 RAR message and sends a system message carrying the first indication information to the terminal. The first indication information is used to indicate that the terminal can report to the second network during the RRC establishment or recovery process that the terminal capability is limited.

[0113] S502: When a first subscriber identity card of a terminal is in a connected state and a second subscriber identity card of the terminal is about to enter a connected state, receive second indication information sent by the terminal based on the first indication information in a system message.

[0114] The second indication information is used to indicate that the terminal capability is limited.

[0115] The first user identification card is in a connected state, indicating that connections have been established between the terminal and the base station, and between the base station and the core network. The terminal can perform data transmission based on the first user identification card at any time, and no delay is required to establish the connection state.

[0116] The second user identification card is about to enter the connected state, which can be from the deactivated state to the connected state, or from the idle state to the connected state. Among them, the second user identification card enters the connected state from the deactivated state, indicating that no connection is established between the terminal and the base station, and a connection is established for the terminal between the base station and the core network. Once there is data that needs to be sent to the terminal, the base station will send a paging so that the terminal can quickly establish a connection with the base station after receiving it, and enter the connected state from the deactivated state, and then data can be transmitted based on the second user identification card. The second user identification card enters the connected state from the idle state, indicating that no connection is established for the terminal between the terminal and the base station, and between the base station and the core network. If there is data that needs to be sent to the terminal, or the terminal needs to send data, it takes a relatively long delay to enter the connected state from the idle state.

[0117] When the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state from a deactivated state or an idle state, the terminal monitors the paging sent by the second network at a regular interval, and during the RRC establishment or recovery process of the second user identification card, the terminal sends an RRC establishment or recovery request to the second network based on the received system message, and then receives relevant information required for RRC establishment or recovery returned by the second network based on the RRC establishment or recovery request. Further, the terminal sends second indication information to the second network based on the first indication information in the system message.

[0118] Correspondingly, the second network receives second indication information sent by the terminal, where the second indication information is used to indicate that the terminal capability is limited.

[0119] It is understandable that because the first user identification card and the second user identification card share front-end radio frequency resources, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, the terminal's capabilities are limited. Specifically, the first network may have occupied all radio frequency capabilities. In this case, the terminal needs to release some radio frequency capabilities to establish a connection with the second network; the first network may also have occupied some radio frequency capabilities. In this case, no conflict will occur when the terminal establishes a connection with the second network. This embodiment specifically uses the second case as an example for explanation.

[0120] In an optional embodiment, the receiving terminal sends an RRC establishment or recovery completion message for the second subscriber identity card based on the first indication information in the system message; wherein the RRC establishment or recovery completion message carries the second indication information.

[0121] For example, the terminal sends an RRC establishment or recovery completion message (MSG5) for the second user identification card to the second network based on the first indication information in the system message. Accordingly, the second network receives the RRC establishment or recovery completion message, which carries second indication information for indicating that the terminal capability is limited.

[0122] It should be noted that if the second user identification card enters the connected state from the deactivated state, the terminal sends an RRC recovery completion message carrying the second indication information to the second network during the RRC recovery process of the second user identification card; if the second user identification card enters the connected state from the idle state, the terminal sends an RRC establishment completion message carrying the second indication information to the second network during the RRC establishment process of the second user identification card.

[0123] In the above solution, the second network sends a system message to the terminal, and then, when the terminal's first SIM card is in a connected state and the terminal's second SIM card is about to enter a connected state, the terminal receives second indication information sent by the terminal based on the first indication information in the system message; the second indication information is used to indicate that the terminal has limited capabilities. In this embodiment, the system message sent by the second network to the terminal carries first indication information that allows the terminal to report limited terminal capabilities during the RRC establishment or recovery process. This allows the terminal to proactively report limited terminal capabilities during the RRC establishment or recovery process, achieving early state synchronization between the terminal and the second network, and reducing service latency of the SIM card in the dual-SIM dual-pass terminal.

[0124] To avoid conflicts when the second network configures terminal capabilities, based on the above embodiment, in one embodiment, the second network may carry third indication information allowing the terminal to report a restricted capability set in a first RRC reconfiguration message sent to the terminal, so that the terminal can report some potentially restricted terminal capabilities in advance. As shown in FIG6 , the terminal capability notification method may further include:

[0125] S601: When both the first subscriber identity card and the second subscriber identity card are in a connected state, a first RRC reconfiguration message is sent to a terminal.

[0126] The terminal completes the RRC establishment or recovery process for the second user identity card, and the second user identity card also enters the connected state. In this case, the second network sends a first RRC reconfiguration message for the second user identity card to the terminal. The first RRC reconfiguration message carries third indication information, and the third indication information is used to indicate that the terminal can report the terminal's restricted capability set.

[0127] S602: Receive a restricted capability set of the terminal sent by the terminal based on third indication information in the first RRC reconfiguration message.

[0128] The second network receives a first RRC reconfiguration complete message sent by the terminal, and further receives a restricted capability set of the terminal proactively sent by the terminal based on the third indication information. The restricted capability set of the terminal is used by the second network to determine whether to configure the terminal capabilities. Specifically, the restricted capability set of the terminal is used by the second network to determine whether to configure the terminal capabilities and how to configure the terminal capabilities.

[0129] In an optional embodiment, the receiving terminal sends a terminal assistance message based on the third indication information in the first RRC reconfiguration message; wherein the terminal assistance message carries the restricted capability set of the terminal.

[0130] Terminal assistance messages (UAIs) allow a terminal to notify the network of its internal state, allowing the network to schedule resources to better match the terminal's specific state. In this embodiment, the terminal can report its restricted capabilities to the second network via UAI. Accordingly, the second network receives the restricted capabilities reported by the terminal via UAI.

[0131] In an optional embodiment, the restricted capability set reported by the terminal includes at least one of potential frequency band combination conflict, multiple-in multiple-out (MIMO) capability, and measurement period capability.

[0132] Optionally, the restricted capability set includes at least one of the terminal's current restricted capabilities and future potential restricted capabilities. In other words, the terminal can not only report the terminal's currently restricted terminal capabilities to the second network, but also report the terminal's capabilities that may be restricted in the future to the second network. By reporting the future restricted capabilities to the second network in advance, the impact on the service establishment delay of the second user identification card in the future can be reduced.

[0133] For potential frequency band combination conflicts, the reported future potential restricted capabilities are represented by the IE definition of the frequency band combination conflict list. For example, the second network resides in the N78 frequency band, and the first user identification card resides in the N1 frequency band. Currently, the N1 and N78 frequency band combination does not conflict, but the terminal cannot support both N78 and N79. Therefore, the terminal can report N78 and N79, which may conflict in the future, as future potential restricted capabilities to the second network. This prevents the second network from reconfiguring the first user identification card's network to N79 during subsequent RRC reconfiguration, thereby avoiding conflicts.

[0134] Terminal capabilities are categorized into different levels of capabilities. For example, specific terminal capabilities apply to all supported carriers and carrier combinations. Alternatively, carrier-combination-level capabilities apply to each carrier combination, while carrier-level capabilities also apply to each carrier. Terminal capabilities may include the maximum uplink and downlink transmission rates of the terminal's service channels, the number of MIMO layers supported by the terminal's service channels (i.e., MIMO capabilities), and the highest-order modulation scheme supported by the terminal's service channels.

[0135] The measurement period capability refers to the ability of a terminal to measure the signal level or signal quality of a cell, generate a measurement report, and send the measurement report to the network at a certain period.

[0136] The restricted capability set may further include CC (Component Carrier) capability or CG (Cell Group) capability, etc., which is not limited in this embodiment.

[0137] In this embodiment, when both the first user identification card and the second user identification card are in a connected state, a first RRC reconfiguration message is sent to the terminal, and then the terminal receives the restricted capability set of the terminal sent based on the third indication information in the first RRC reconfiguration message. It can be understood that if the terminal can actively report the terminal capabilities that may be affected in the future (such as frequency band combination conflicts), the terminal capability conflicts caused by subsequent RRC reconfiguration or RRC recovery can be avoided, thereby avoiding the introduction of additional service delays. In other words, the terminal reports the restricted capability set in the connection reconfiguration for the second user identification card, so that the second network can decide whether to reconfigure the terminal wireless resources, thereby achieving better state synchronization between the terminal and the second network, effectively avoiding packet loss and link failure during data transmission, and actively reporting the current restricted capability and future restricted capability of the terminal, which can further reduce the impact on the service establishment delay of the second user identification card in the future.

[0138] As an optional implementation method of this embodiment, the first RRC reconfiguration message carries a timing duration. If the second network receives a terminal assistance message carrying a set of restricted capabilities of the terminal sent by the terminal when the timer has not reached the timing duration, the second network does not respond to the terminal assistance message.

[0139] Specifically, the terminal may report the terminal's restricted capability set to the second network based on the timer duration carried in the first RRC reconfiguration message. For example, after sending a terminal assistance message carrying the terminal's restricted capability set once, the terminal starts a timer. If the timer does not reach the timer duration, the terminal is prohibited from sending terminal assistance messages to the second network again.

[0140] If the terminal sends another terminal assistance message carrying the terminal's restricted capabilities set before the timer expires, the second network may not process the message. Conversely, if the second network receives another terminal assistance message carrying the terminal's restricted capabilities set before the timer expires, the second network will not respond to the message.

[0141] It should be noted that, for the first network, the timing duration may also be carried in the second RRC reconfiguration message sent to the terminal. The purpose is the same as that of the second network and will not be described in detail.

[0142] In this way, the timer can prevent the terminal from frequently reporting the restricted capability set, avoid large overhead and unnecessary RRC reconfiguration, and save resources and optimize the process while ensuring that the terminal can successfully report the restricted capability set to the network.

[0143] In one embodiment, an optional example of a terminal capability notification method is provided, as shown in FIG7 , and the specific process is as follows:

[0144] The first user identification card of the terminal is in a connected state, and the second user identification card of the terminal is in a deactivated state or an idle state:

[0145] S701: A first network sends a second RRC reconfiguration message for a first subscriber identity card to a terminal.

[0146] The second RRC reconfiguration message carries fourth indication information, and the fourth indication information is used to indicate that the terminal can report the restricted capability set of the terminal. The second RRC reconfiguration message also carries the timing duration of the timer.

[0147] S702: The terminal sends a second RRC reconfiguration success message for the first subscriber identity card to the first network.

[0148] S703: The second network sends a system message to the terminal.

[0149] The system message carries first indication information, the first indication information being used to indicate that the terminal may send second indication information during an RRC establishment or recovery process for the second subscriber identity card, and the second indication information being used to indicate that the terminal's capabilities are limited. It will be understood that the time at which the network sends the system message to the terminal is independent of the state of the terminal's subscriber identity card. This is merely an example and does not limit the time at which the second network sends the system message to the terminal.

[0150] S704: The terminal sends an RRC establishment or recovery request for the second subscriber identity card to the second network.

[0151] S705: The second network sends to the terminal information required for RRC establishment or recovery of the second subscriber identity card.

[0152] S706: The terminal sends an RRC establishment or recovery completion message for the second subscriber identity card to the second network.

[0153] The RRC establishment or recovery completion message carries second indication information, and the second indication information is used to indicate that the terminal capability is limited.

[0154] The first user identification card and the second user identification card of the terminal are both in the connected state:

[0155] S707: The second network sends a first RRC reconfiguration message for the second subscriber identity card to the terminal.

[0156] The first RRC reconfiguration message carries third indication information, and the third indication information is used to indicate that the terminal can report the restricted capability set of the terminal. The first RRC reconfiguration message also carries the timing duration of the timer.

[0157] S708: The terminal sends a first RRC reconfiguration success message for the second subscriber identity card to the second network.

[0158] S709: The terminal sends a terminal assistance message to the second network.

[0159] The terminal assistance message includes a restricted capability set of the terminal, which includes at least one of the terminal's current restricted capabilities and future potential restricted capabilities. The terminal may send the terminal assistance message to the second network based on a timed duration to report the terminal's restricted capability set. For example, after sending the terminal assistance message to the second network, a capability reporting timer for the second network is started. The terminal will no longer send terminal assistance messages to the second network before the capability reporting timer expires.

[0160] S710: The second network determines whether to configure terminal capabilities.

[0161] S711. The terminal sends a terminal assistance message to the first network.

[0162] The terminal assistance message includes a restricted capability set of the terminal, which includes at least one of the terminal's current restricted capabilities and future potential restricted capabilities. The terminal may send the terminal assistance message to the first network based on a timed duration to report the terminal's restricted capability set. For example, after sending the terminal assistance message to the first network, a capability reporting timer for the first network is started. Before the capability reporting timer expires, the terminal no longer sends terminal assistance messages to the first network.

[0163] S712: The first network determines whether to configure the terminal capability.

[0164] The specific process of the above steps can be found in the description of the above method embodiment. The implementation principles and technical effects are similar and will not be repeated here.

[0165] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0166] Based on the same inventive concept, embodiments of the present application further provide a terminal capability notification device for implementing the aforementioned terminal capability notification method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations in one or more embodiments of the terminal capability notification device provided below can be found in the limitations of the terminal capability notification method described above and will not be further elaborated here.

[0167] In one embodiment, as shown in FIG8 , a terminal capability notification device 1 is provided, comprising: a receiving module 10 and a sending module 20 , wherein:

[0168] The first receiving module 10 is configured to receive a system message sent by a second network to which a second subscriber identification card of the terminal belongs.

[0169] The first sending module 20 is used to send second indication information to the second network during the process of establishing or recovering radio resource control RRC for the second user identification card based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state.

[0170] The second indication information is used to indicate that the terminal capability is limited.

[0171] In one embodiment, the first sending module 20 is specifically configured to send an RRC establishment or recovery completion message for the second subscriber identity card to the second network.

[0172] The RRC establishment or recovery completion message carries the second indication information.

[0173] In one embodiment, based on FIG8 , as shown in FIG9 , the terminal capability notification device 1 may further include:

[0174] The third receiving module 30 is configured to receive a first RRC reconfiguration message sent by the second network when both the first subscriber identity card and the second subscriber identity card are in a connected state.

[0175] The third sending module 40 is configured to send the restricted capability set of the terminal to the second network based on the third indication information in the first RRC reconfiguration message.

[0176] The restricted capability set of the terminal is used by the second network to determine whether to configure the terminal capability.

[0177] In an embodiment, the third sending module 40 is specifically configured to send a terminal assistance message carrying a restricted capability set of the terminal to the second network.

[0178] In one embodiment, based on FIG8 , as shown in FIG10 , the terminal capability notification device 1 may further include:

[0179] The fourth receiving module 50 is configured to receive a second RRC reconfiguration message sent by a first network to which the first SIM card belongs when the first SIM card of the terminal is in a connected state and the second SIM card of the terminal is about to enter a connected state.

[0180] The fourth sending module 60 is configured to send the restricted capability set of the terminal to the first network based on the fourth indication information in the second RRC reconfiguration message when both the first subscriber identity card and the second subscriber identity card are in the connected state.

[0181] In an embodiment, the fourth sending module 60 is specifically configured to send a terminal assistance message carrying a restricted capability set of the terminal to the first network.

[0182] In one embodiment, the restriction capability set includes at least one of a current restriction capability and a future potential restriction capability of the terminal.

[0183] In one embodiment, the restricted capability set includes at least one of potential band combination conflict, multiple-input multiple-output (MIMO) capability, and measurement period capability.

[0184] In one embodiment, the first RRC reconfiguration message carries a timing duration, and the third sending module 40 is specifically configured to send a terminal assistance message carrying a restricted capability set of the terminal to the second network according to the timing duration.

[0185] In one embodiment, the above-mentioned third sending module 40 is specifically used to send a terminal assistance message carrying a restricted capability set of the terminal to the second network and initialize the timer; if the timer timing does not reach the timing duration, it is prohibited to send the terminal assistance message carrying a restricted capability set of the terminal to the second network again.

[0186] In one embodiment, the third sending module 40 is specifically configured to send a terminal assistance message carrying a set of restricted capabilities of the terminal to the second network according to a new timing duration if a new timing duration is received from the second network when the timer has not reached the timing duration.

[0187] In one embodiment, the second RRC reconfiguration message carries a timing duration, and the fourth sending module 60 is specifically configured to send a terminal assistance message carrying a restricted capability set of the terminal to the first network according to the timing duration.

[0188] In one embodiment, the fourth sending module 60 is specifically used to send a terminal assistance message carrying a restricted capability set of the terminal to the first network and initialize a timer; if the timer does not reach the timing duration, it is prohibited to send the terminal assistance message carrying a restricted capability set of the terminal to the first network again.

[0189] In one embodiment, the fourth sending module 60 is specifically configured to, when the timer has not reached the timing duration, send a terminal assistance message carrying the restricted capability set of the terminal to the first network according to the new timing duration if a new timing duration sent by the first network is received.

[0190] In one embodiment, as shown in FIG11 , a terminal capability notification device 2 is provided, comprising: a second sending module 10 and a second receiving module 20 , wherein:

[0191] The second sending module 10 is configured to send a system message to a terminal.

[0192] The system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the process of establishing or restoring the RRC for the second subscriber identity card.

[0193] The second receiving module 20 is configured to receive second indication information sent by the terminal based on the first indication information in the system message when the first SIM card of the terminal is in a connected state and the second SIM card of the terminal is about to enter a connected state.

[0194] The second indication information is used to indicate that the terminal capability is limited.

[0195] In one embodiment, the second receiving module 20 is specifically configured to receive an RRC establishment or recovery completion message for the second subscriber identity card, which is sent by the terminal based on the first indication information in the system message.

[0196] The RRC establishment or recovery completion message carries the second indication information.

[0197] In one embodiment, based on FIG11 , as shown in FIG12 , the terminal capability notification device 2 may further include:

[0198] The fifth sending module 30 is configured to send a first RRC reconfiguration message to the terminal when both the first subscriber identity card and the second subscriber identity card are in a connected state.

[0199] The fifth receiving module 40 is configured to receive a terminal restriction capability set sent by the terminal based on the third indication information in the first RRC reconfiguration message.

[0200] The restricted capability set of the terminal is used by the second network to determine whether to configure the terminal capability.

[0201] In one embodiment, the fifth receiving module 40 is specifically configured to receive a terminal assistance message sent by the terminal based on the third indication information in the first RRC reconfiguration message.

[0202] The terminal assistance message carries the restricted capability set of the terminal.

[0203] In one embodiment, the restriction capability set includes at least one of a current restriction capability and a future potential restriction capability of the terminal.

[0204] In one embodiment, the restricted capability set includes at least one of potential band combination conflict, multiple-input multiple-output (MIMO) capability, and measurement period capability.

[0205] In one embodiment, the first RRC reconfiguration message carries a timing duration, and the terminal capability notification device 2 may further include:

[0206] The response control module is configured to, when the timer has not reached the timing duration, not respond to the terminal assistance message if a terminal assistance message carrying the terminal's restricted capability set is received from the terminal.

[0207] Each module in the terminal capability notification device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a memory in a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0208] In one embodiment, a communication device is provided, comprising a transmitter, a receiver, a processor, and a memory, wherein the memory stores a computer program. The processor of the communication device is configured to provide computing and control capabilities, and when the processor executes the computer program, the steps of each of the above-described method embodiments are implemented. The memory of the communication device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the communication device is configured to communicate with an external terminal via a network connection.

[0209] In one embodiment, a communication device is provided, including a transmitter, a receiver, a processor and a memory, wherein the memory stores a computer program; the receiver is used to receive a system message sent by a second network to which a second user identification card of a terminal belongs; the transmitter is used to send second indication information to the second network based on first indication information in the system message during the process of establishing or restoring radio resource control (RRC) for the second user identification card, when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

[0210] In one embodiment, a communication device is provided, including a transmitter, a receiver, a processor and a memory, wherein the memory stores a computer program; the transmitter is used to send a system message to a terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to a second network during RRC establishment or recovery of a second user identification card; the receiver is used to receive second indication information sent by the terminal based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal has limited capabilities.

[0211] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps of the terminal capability notification method when executing the computer program.

[0212] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the terminal capability notification method are implemented.

[0213] In one embodiment, a computer program product is provided, including a computer program, which implements the steps of the above-mentioned terminal capability notification method when executed by a processor.

[0214] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0215] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0216] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A terminal capability notification method, characterized in that: Applied to terminals, including: receiving a system message sent by a second network to which a second user identification card of the terminal belongs, wherein the system message includes first indication information; When the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, based on the first indication information in the system message, during the process of establishing or restoring radio resource control RRC for the second user identification card, second indication information is sent to the second network; wherein the second indication information is used to indicate that the terminal capability is limited.

2. The method according to claim 1, characterized in that The sending the second indication information to the second network includes: Sending an RRC establishment or recovery completion message for the second user identification card to the second network; wherein the RRC establishment or recovery completion message carries the second indication information.

3. The method according to claim 1, characterized in that The method further comprises: When both the first user identification card and the second user identification card are in a connected state, receiving a first RRC reconfiguration message sent by the second network; Based on the third indication information in the first RRC reconfiguration message, the restricted capability set of the terminal is sent to the second network; wherein the restricted capability set of the terminal is used for the second network to determine whether to configure the terminal capabilities.

4. The method according to claim 3, characterized in that The sending the restricted capability set of the terminal to the second network includes: Sending a terminal assistance message carrying the restricted capability set of the terminal to the second network.

5. The method according to claim 1, characterized in that: The method further comprises: When a first user identification card of the terminal is in a connected state and a second user identification card of the terminal is about to enter a connected state, receiving a second RRC reconfiguration message sent by a first network to which the first user identification card belongs; When both the first user identification card and the second user identification card are in a connected state, based on fourth indication information in the second RRC reconfiguration message, a restricted capability set of the terminal is sent to the first network.

6. The method according to claim 5, characterized in that The sending the restricted capability set of the terminal to the first network includes: Sending a terminal assistance message carrying the restricted capability set of the terminal to the first network.

7. The method according to any one of claims 3 to 6, characterized in that: The restriction capability set includes at least one of a current restriction capability and a future potential restriction capability of the terminal.

8. The method according to any one of claims 3 to 6, characterized in that: The restricted capability set includes at least one of potential band combination conflict, multiple-input multiple-output MIMO capability, and measurement period capability.

9. The method according to claim 4, characterized in that The first RRC reconfiguration message carries a timing duration, and the sending to the second network a terminal assistance message carrying a restricted capability set of the terminal includes: Sending a terminal assistance message carrying the restricted capability set of the terminal to the second network according to the timing duration.

10. The method according to claim 9, characterized in that The sending, according to the timing duration, to the second network a terminal assistance message carrying a restricted capability set of the terminal includes: Sending a terminal assistance message carrying a restricted capability set of the terminal to the second network, and initializing a timer; When the timing of the timer does not reach the timing duration, it is prohibited to send the terminal assistance message carrying the restricted capability set of the terminal to the second network again.

11. The method according to claim 9, characterized in that The sending, according to the timing duration, to the second network a terminal assistance message carrying a restricted capability set of the terminal includes: When the timer does not reach the timing duration, if a new timing duration sent by the second network is received, a terminal assistance message carrying the restricted capability set of the terminal is sent to the second network according to the new timing duration.

12. The method according to claim 6, characterized in that The second RRC reconfiguration message carries a timing duration, and the sending to the first network a terminal assistance message carrying a restricted capability set of the terminal includes: Sending a terminal assistance message carrying the restricted capability set of the terminal to the first network according to the timing duration.

13. The method according to claim 12, characterized in that The sending, according to the timing duration, to the first network a terminal assistance message carrying a restricted capability set of the terminal includes: Sending a terminal assistance message carrying a restricted capability set of the terminal to the first network, and initializing a timer; When the timing of the timer does not reach the timing duration, it is prohibited to send the terminal assistance message carrying the restricted capability set of the terminal to the first network again.

14. The method according to claim 12, characterized in that The sending, according to the timing duration, to the first network a terminal assistance message carrying a restricted capability set of the terminal includes: When the timer does not reach the timing duration, if a new timing duration sent by the first network is received, a terminal assistance message carrying the restricted capability set of the terminal is sent to the first network according to the new timing duration.

15. A terminal capability notification method, characterized in that: The second network to which the second user identification card of the terminal belongs includes: Sending a system message to the terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the RRC establishment or recovery process of the second user identification card; When the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state, second indication information sent by the terminal based on the first indication information in the system message is received; wherein the second indication information is used to indicate that the terminal capability is limited.

16. The method according to claim 15, characterized in that The receiving second indication information sent by the terminal based on the first indication information in the system message includes: Receive an RRC establishment or recovery completion message for the second user identification card sent by the terminal based on the first indication information in the system message; wherein the RRC establishment or recovery completion message carries the second indication information.

17. The method according to claim 15, characterized in that The method further comprises: When both the first user identification card and the second user identification card are in a connected state, sending a first RRC reconfiguration message to the terminal; Receive a restricted capability set of the terminal sent by the terminal based on the third indication information in the first RRC reconfiguration message; wherein the restricted capability set of the terminal is used for the second network to determine whether to configure the terminal capabilities.

18. The method according to claim 17, characterized in that Receiving a restricted capability set of the terminal sent by the terminal based on the third indication information in the first RRC reconfiguration message, including: Receive a terminal assistance message sent by the terminal based on the third indication information in the first RRC reconfiguration message; wherein the terminal assistance message carries a restriction capability set of the terminal.

19. The method according to any one of claims 17-18, characterized in that The restriction capability set includes at least one of a current restriction capability and a future potential restriction capability of the terminal.

20. The method according to any one of claims 17-18, characterized in that The restricted capability set includes at least one of potential band combination conflict, multiple-input multiple-output MIMO capability, and measurement period capability.

21. The method according to claim 18, characterized in that The first RRC reconfiguration message carries a timing duration, and the method further includes: In the case that the timing of the timer does not reach the timing duration, if a terminal assistance message carrying the restricted capability set of the terminal sent by the terminal is received, no response is made to the terminal assistance message.

22. A terminal capability notification device, characterized in that: include: A first receiving module, used for receiving a system message sent by a second network to which a second user identification card of the terminal belongs; A first sending module is used to send second indication information to the second network during the process of establishing or restoring radio resource control (RRC) for the second user identification card based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

23. A terminal capability notification device, characterized in that: include: A second sending module, configured to send a system message to a terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the process of establishing or restoring the RRC for the second user identification card; The second receiving module is used to receive the second indication information sent by the terminal based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

24. A communication device, characterized in that: include: a transmitter, a receiver, a processor and a memory, the memory storing a computer program; The receiver is used to receive a system message sent by a second network to which a second user identification card of the terminal belongs; The transmitter is used to send second indication information to the second network during the process of establishing or restoring radio resource control (RRC) for the second user identification card based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

25. A communication device, characterized in that: include: a transmitter, a receiver, a processor and a memory, the memory storing a computer program; The transmitter is used to send a system message to the terminal; wherein the system message carries first indication information, and the first indication information is used to instruct the terminal to send second indication information to the second network during the RRC establishment or recovery process of the second user identification card; The receiver is used to receive second indication information sent by the terminal based on the first indication information in the system message when the first user identification card of the terminal is in a connected state and the second user identification card of the terminal is about to enter a connected state; wherein the second indication information is used to indicate that the terminal capability is limited.

26. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 21 are implemented.

27. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 21 are implemented.

Images